DOUBLE FLOW-CIRCUIT HEAT EXCHANGE DEVICE FOR PERIODIC POSITIVE AND REVERSE DIRECTIONAL PUMPING

DISPOSITIF D'ECHANGE DE CHALEUR A DOUBLE CIRCUIT DE CIRCULATION PERMETTANT LE POMPAGE DIRECTIONNEL INVERSE ET POSITIF PERIODIQUE

English Abstract

The present invention provides a double flow-circuit heat exchange device for periodic positive and reverse directional pumping, which is disposed with the bi-directional fluid pump capable of producing positive pressure or negative pressure at the fluid port on two sides of the bi-directional heat exchange device for periodically positive and reverse pumping the two fluid circuits in opposite flowing directions, thereby in the operation of periodically positive and reverse pumping to maintain the two fluid circuits in different flowing directions.

French Abstract

La présente invention a trait à un dispositif à échange de chaleur à double circuit pour pompage directionnel inverse et positif périodique. Ledit dispositif est disposé avec la pompe bidirectionnelle capable de produire une pression positive ou négative à lorifice de fluide sur deux côtés du dispositif à échange de chaleur bidirectionnel à des fins de pompage inverse et positif périodique des deux circuits de fluide dans des sens découlement opposés. Le pompage inverse et positif périodique permet donc de maintenir les deux circuits de fluide dans des directions découlement différentes.

Claims

Claims
1. A system for exchanging heat between two flows of fluids in a double
flow circuit heat
exchange device comprising:
a heat exchange device having a first flow circuit and a second flow circuit
being
configured to exchange heat between two flows of fluid, said first flow
circuit having an
inlet and an outlet and said second flow circuit having an inlet and an
outlet, wherein the
inlet of the first flow circuit has a first fluid port, the inlet of the
second flow circuit has a
second fluid port, the outlet of the first flow circuit has a third fluid
port, and the outlet of
the second flow circuit has a fourth fluid port;
a plurality of unidirectional fluid pumps coupled to the heat exchange device,
each of said
plurality of unidirectional fluid pumps configured to pump a fluid, wherein a
first fluid
pump is coupled to the first fluid port, a second fluid pump is coupled to the
second fluid
port, a third fluid pump is coupled to the third fluid port, and a fourth
fluid pump is coupled
to the fourth fluid port;
a power source configured to provide power to each of the plurality of
unidirectional fluid
pumps;
a periodic fluid direction-change operative control device configured to
control operation
of each of the plurality of unidirectional fluid pumps;
wherein the plurality of unidirectional fluid pumps are arranged on the
respective ports of
the first and second flow circuits so that the periodic fluid direction-change
operative
control device is operable to periodically change a fluid flow direction of a
first fluid in the
first flow circuit and a fluid flow direction of a second fluid in the second
flow circuit.
2. The system for exchanging heat between two fluids in a double flow
circuit heat exchange
device as claimed in claim 1, wherein the heat exchange device is a heat
exchanger having two
internal flow paths with heat absorbing and releasing and humidity absorbing
and releasing
capability, wherein a first flow path is coupled to the first and third fluid
ports and a second flow
path is coupled to the second and fourth fluid ports of the respective first
and second flow circuits.
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3. The system for exchanging heat between two fluids in a double flow
circuit heat exchange
device as claimed in claim 1, wherein the periodic fluid direction-change
operative control device
is configured to provide one or more of the following operating functions:
the plurality of unidirectional pumps are configured to pump the fluids using
negative
pressure, wherein the first and third unidirectional pumps on the first flow
circuit form a
first set of pumps, and the second and fourth unidirectional pumps on the
second flow
circuit form a second set of pumps, wherein the first and second sets of fluid
pumps are
configured to produce periodic negative pressure to pump the fluids in
different flow
directions;
or the plurality of unidirectional pumps are configured to pump the fluids
using positive
pressure, wherein the first and third unidirectional pumps on the first flow
circuit form a
first set of pumps, and the second and fourth unidirectional pumps on the
second flow
circuit form a second set of fluid pumps, wherein the first and second sets of
fluid pumps
are configured to produce periodic positive pressure to pump the fluids in
different flow
directions.
4. The system for exchanging heat between two fluids in a double flow
circuit heat exchange
device as claimed in claim 1, wherein when the periodic fluid direction-change
operative control
device changes the fluid flow direction, the periodic fluid direction-change
operative control
device is configured to change a flow rate of the fluid flow between no flow
and maximum fluid
flow in a stepped operation by controlling the rotational speed of the
plurality of fluid pumps from
idling to the maximum speed range.
5. The system for exchanging heat between two fluids in a double flow
circuit heat exchange
device as claimed in claim 1, wherein when the periodic fluid direction-change
operative control
device changes the fluid flow direction, the periodic fluid direction-change
operative control
device is configured to change a flow rate of the fluid flow between no flow
and maximum fluid
flow in a step-less operation by controlling the rotational speed of the
plurality of fluid pumps
from idling to the maximum speed range.

6.
The system for exchanging heat between two fluids in a double flow circuit
heat exchange
device as claimed in claim 1, wherein the periodic fluid direction-change
operative control device
is configured to control a flow rate of the first fluid in the first flow
circuit and a flow rate of the
second fluid in the second flow circuit relatively proportioned according to
at least one of the
following operational modes:
the fluid flow rate of the first fluid in the first flow circuit is greater
than flow rate of the
second fluid in the second flow circuit;
the fluid flow rate of the first and second fluid in the first and second flow
circuits are the
same; and
when the plurality of unidirectional fluid pumps are configured to pump the
fluid in one
direction, the fluid flow rate of the first and second fluid in the first and
second flow circuits
are different, but when the fluid flow direction changes, the fluid flow rate
of the first and
second fluids in the first and second flow circuits are the same.
7. The system for exchanging heat between two fluids in a double flow circuit
heat exchange
device as claimed in claim 1, wherein the periodic fluid direction-change
operative control device
is configured so that the periodic change of the fluid flow is according to at
least one of the
following modes:
the operational time for pumping the first fluid in a first fluid flow
direction and pumping
the second fluid in a second fluid flow direction are the same; and
the operational time for pumping the first and second fluids in a first fluid
flow direction
and a second fluid flow direction are different.
8. The system for exchanging heat between two fluids in a double flow circuit
heat exchange
device as claimed in claim 1, wherein the periodic fluid direction-change
operative control device
is further configured to simultaneously operate in at least one of the
following special operational
modes:
pumping the first and second fluids in the first and second flow circuits are
pumped in the
same flowing direction;
reversely pumping the first and second fluids out of the first and second flow
circuits in the
same flowing direction; and
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positively and reversely pumping the first and second fluids in the first and
second flow
circuits in the same flowing direction.
9. The system for exchanging heat between two fluids in a double flow circuit
heat exchange
device as claimed in claim 1, wherein the periodic fluid direction-change
operative control device
is further configured to mitigate the impact generated by a gaseous or liquid
fluid by operating in
at least one of the following operational methods:
when changing the fluid flow direction, the periodic fluid direction-change
operative
control device is configured to control the plurality of unidirectional fluid
pumps so that
the flow of fluid slowly reduces to no flow and then switches the direction of
the fluid flow
and slowly increases the flow rate of the fluid to a maximum preset value; and
when changing the fluid flow direction, the periodic fluid direction-change
operative
control device is configured to control the plurality of unidirectional fluid
pumps so that
the flow of fluid slowly reduces to no flow, and the plurality of pumps are
stopped for a
preset time period, and then after the plurality of pumps are switched to pump
the fluid in
a different direction to slowly increase the flow rate of fluid to a maximum
preset value.
10. The system for exchanging heat between two fluids in a double flow
circuit heat exchange
device as claimed in claim 1, further comprising a temperature detecting
device; and at least one
of a humidity detecting device and a gaseous or liquid state detecting device,
installed at positions
capable of directly or indirectly detecting the humidity variation or gaseous
and liquid fluid
composition variation of the pumping fluid respectively.
11. The system for exchanging heat between two fluids in a double flow
circuit heat exchange
device as claimed in claim 10, wherein the periodic fluid direction-change
operative control device
is configured to control the fluid flow direction by manipulating a flow rate
each of the flows of
fluid in one or more of the following operational modes:
the flow rate of pumping fluid is manually adjustable;
the flow rate of fluid is operatively controlled when a detected signal of the
at least one
temperature detecting device reaches a set value;
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the flow rate of fluid is operatively controlled when a detected signal of the
at least one
moisture detecting device reaches a set value; and
the flow rate of fluid is operatively controlled when a detected signal of the
at least one
gaseous or liquid composition detecting device reaches a set value.
12. A system for exchanging heat between two flows of fluids in a double
flow circuit heat
exchange device comprising:
a heat exchange device having a first flow circuit and a second flow circuit
being
configured to exchange heat between two flows of fluid, said first flow
circuit having an
inlet and an outlet and said second flow circuit having an inlet and an
outlet;
at least two bidirectional fluid pumps, wherein a first of said two
bidirectional fluid pumps
is coupled to one of the inlet or outlet of the first flow circuit; and
wherein a second of said
at least two bidirectional fluid pumps is coupled to one of the inlet or
outlet of the second
flow circuit;
a power source configured to provide power to the at least one bidirectional
fluid pump;
a periodic fluid direction-change operative control device configured to
control operations
of the at least two bidirectional fluids pumps;
wherein the at least two bidirectional fluid pumps are separately arranged on
the first and
second flow circuit so that the periodic fluid direction-change operative
control device is
operable to periodically change a fluid flow direction of a fluid in the
respective first flow
circuit or the second flow circuit.
13. The system for exchanging heat between two fluids in a double flow
circuit heat exchange
device as claimed in claim 12, wherein the heat exchange device is a heat
exchanger having two
internal flow paths with heat absorbing and releasing and humidity absorbing
and releasing
capability.
14. The system for exchanging heat between two fluids in a double flow
circuit heat exchange
device as claimed in claim 12, wherein the periodic fluid direction-change
operative control device
is configured to provide one or more of the following operating functions:
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the at least two bidirectional pumps are configured to pump the fluid in the
respective flow
circuit using negative pressure to pump the fluids in different flowing
directions;
or the at least two bidirectional pumps are configured to pump the fluid in
the respective
flow circuit using positive pressure to pump the fluids in different flowing
directions.
15. The system for exchanging heat between two fluids in a double flow
circuit heat exchange
device as claimed in claim 12, wherein when the periodic fluid direction-
change operative control
device changes the fluid flow direction, the periodic fluid direction-change
operative control
device is configured to change a flow rate of the fluid flow between no flow
and maximum fluid
flow in a stepped operation by controlling the rotational speed of at least
one of said two
bidirectional fluid pumps from idling to the maximum speed range.
16. The system for exchanging heat between two fluids in a double flow
circuit heat exchange
device as claimed in claim 12, wherein when the periodic fluid direction-
change operative control
device changes the fluid flow direction, the periodic fluid direction-change
operative control
device is configured to change a flow rate of the fluid flow between no flow
and maximum fluid
flow in a step-less operation by controlling the rotational speed of at least
one of the at least two
bidirectional fluid pumps from idling to the maximum speed range.
17. The system for exchanging heat between two fluids in a double flow
circuit heat exchange
device as claimed in claim 12, wherein the periodic fluid direction-change
operative control device
is configured so that the periodic change of the fluid flow is according to at
least one of the
following modes:
the operational time for pumping the fluid in a first fluid flow direction and
pumping the
fluid in a second fluid flow direction are the same; and
the operational time for pumping the fluid in the first fluid flow direction
and pumping the
fluid in the second fluid flow direction are different.
18. The system for exchanging heat between two fluids in a double flow
circuit heat exchange
device as claimed in claim 12, wherein the periodic fluid direction-change
operative control device
is further configured to simultaneously operate in at least one of the
following operational modes:
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pumping the fluid in one of the first and second flow circuits in a same
flowing direction
as a second fluid in the other flow circuit;
reversely pumping the fluid out of one of the first and second flow circuits
in the same
flowing direction as pumping out of the second fluid in the other flow
circuit; and
positively and reversely pumping the fluid in one of the first and second flow
circuits in
the same flowing direction as the second fluid in the other flow circuit.
19. The system for exchanging heat between two fluids in a double flow
circuit heat exchange
device as claimed in claim 12, wherein the periodic fluid direction-change
operative control device
is further configured to mitigate the impact generated by a gaseous or liquid
fluid by operating in
at least one of the following operational methods:
when changing the fluid flow direction, the periodic fluid direction-change
operative
control device is configured to control at least one of the bidirectional
fluid pumps so that
the flow of fluid slowly reduces to no flow and then switches the direction of
the fluid flow
and slowly increases the flow rate of the fluid to a maximum preset value; and
when changing the fluid flow direction, the periodic fluid direction-change
operative
control device is configured to control at least one of the two bidirectional
fluid pumps so
that the flow of fluid slowly reduces to no flow, and the at least one
bidirectional fluid
pump is stopped for a preset time period, and then after stopping the at least
one
bidirectional fluid pump, the at least one bidirectional fluid pump is
switched to pump the
fluid in a different direction to slowly increase the flow rate of fluid to a
maximum preset
value.
20. The system for exchanging heat between two fluids in a double flow
circuit heat exchange
device as claimed in claim 12, further comprising at least one of a
temperature detecting device;
and at least one of a humidity detecting device or a gaseous or liquid state
detecting device,
installed at positions capable of directly or indirectly detecting the
humidity variation or gaseous
and liquid fluid composition variation of the pumping fluid respectively.
21. The system for exchanging heat between two fluids in a double flow
circuit heat exchange
device as claimed in claim 20, wherein the periodic fluid direction-change
operative control device

is configured to control the fluid flow direction by manipulating a flow rate
each of the flows of
fluid in one or more of the following operational modes:
the flow rate of pumping fluid is manually adjustable;
the flow rate of fluid is operatively controlled when a detected signal of the
at least one
temperature detecting device reaches a set value;
the flow rate of fluid is operatively controlled when a detected signal of the
at least one
moisture detecting device reaches a set value; and
the flow rate of fluid is operatively controlled when a detected signal of the
at least one
gaseous or liquid composition detecting device reaches a set value.
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Description

CA 02673107 2016-02-01
DOUBLE FLOW-CIRCUIT HEAT EXCHANGE DEVICE FOR PERIODIC POSITIVE
AND REVERSE DIRECTIONAL PUMPING
TECHNICAL FIELD
The present invention improves the conventional heat exchange device by
pumping fluids in
different flowing directions in a double flow circuit heat exchanger. By
controlling the periodic
positive and reverse directional pumping, the temperature difference
distribution can be improved
between the fluid and the heat exchanger. Additionally, the heat can be
further interposed or coated
with permeation or absorbability type desiccant materials, or the heat
exchanger itself can have a
concurrent moisture absorbing function. Through the positive and reverse
directional pumping of
the fluids in the double flow-circuit heat exchanger and the heat exchanger
being interposed or
coated with desiccant material, and/or the heat exchanger itself has a
concurrent moisture
absorbing function, to dehumidification effect of total heat exchange function
can result.
Moreover, pumping fluids in different flowing directions also results in
reducing dust
accumulation or pollution production which results from fluids flowing in
fixed flowing directions.
BACKGROUND
For a conventional heat exchange device or total heat exchange device that
pumps fluids in
different flowing directions, the fluid flowing directions are normally fixed.
Since the fluid flowing
direction is fixed, the temperature difference distribution gradients between
the thermal exchange
fluids and the internal heat exchangers do not change. Furthermore, the fluids
in different flowing
directions have differences in humidity saturation degrees at the two flow
inlet/outlet ends and
sides of the heat exchanger.
SUMMARY OF THE INVENTION
In accordance with an aspect of the present invention there is provided a
system for exchanging
heat between two flows of fluids in a double flow circuit heat exchange device
comprising: a heat
exchange device having a first flow circuit and a second flow circuit being
configured to exchange
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CA 02673107 2016-02-01
heat between two flows of fluid, said first flow circuit having an inlet and
an outlet and said second
flow circuit having an inlet and an outlet, wherein the inlet of the first
flow circuit has a first fluid
port, the inlet of the second flow circuit has a second fluid port, the outlet
of the first flow circuit
has a third fluid port, and the outlet of the second flow circuit has a fourth
fluid port; a plurality of
unidirectional fluid pumps coupled to the heat exchange device, each of said
plurality of
unidirectional fluid pumps configured to pump a fluid, wherein a first fluid
pump is coupled to the
first fluid port, a second fluid pump is coupled to the second fluid port, a
third fluid pump is
coupled to the third fluid port, and a fourth fluid pump is coupled to the
fourth fluid port; a power
source configured to provide power to each of the plurality of unidirectional
fluid pumps; a
periodic fluid direction-change operative control device configured to control
operation of each of
the plurality of unidirectional fluid pumps; wherein the plurality of
unidirectional fluid pumps are
arranged on the respective ports of the first and second flow circuits so that
the periodic fluid
direction-change operative control device is operable to periodically change a
fluid flow direction
of a first fluid in the first flow circuit and a fluid flow direction of a
second fluid in the second
flow circuit.
In accordance with another aspect of the present invention there is provided a
system for
exchanging heat between two flows of fluids in a double flow circuit heat
exchange device
comprising: a heat exchange device having a first flow circuit and a second
flow circuit being
configured to exchange heat between two flows of fluid, said first flow
circuit having an inlet and
an outlet and said second flow circuit having an inlet and an outlet; at least
two bidirectional fluid
pumps, wherein a first of said two bidirectional fluid pumps is coupled to one
of the inlet or outlet
of the first flow circuit; and wherein a second of said at least two
bidirectional fluid pumps is
coupled to one of the inlet or outlet of the second flow circuit; a power
source configured to provide
power to the at least one bidirectional fluid pump; a periodic fluid direction-
change operative
control device configured to control operations of the at least two
bidirectional fluids pumps;
wherein the at least two bidirectional fluid pumps are separately arranged on
the first and second
flow circuit so that the periodic fluid direction-change operative control
device is operable to
periodically change a fluid flow direction of a fluid in the respective first
flow circuit or the second
flow circuit.
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BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic view showing operating principles of the conventional bi-
directional heat
exchange device or total heat exchange device.
FIG. 2 is the first structural block schematic view of the embodiment showing
the double flow-
circuit heat exchange device for periodic positive and reverse directional
pumping of the present
invention being applied in the heat exchanger.
FIG. 3 is the second structural block schematic view of the embodiment showing
the double flow-
circuit heat exchange device for periodic positive and reverse directional
pumping of the present
invention being applied in the heat exchanger.
FIG. 4 is the third structural block schematic view of the embodiment showing
the double flow-
circuit heat exchange device for periodic positive and reverse directional
pumping of the present
invention being applied in the heat exchanger.
FIG. 5 is the first structural block schematic view of the embodiment showing
the double flow-
circuit heat exchange device for periodic positive and reverse directional
pumping of the present
invention being applied in the total heat exchanger.
FIG. 6 is the second structural block schematic view of the embodiment showing
the double flow-
circuit heat exchange device for periodic positive and reverse directional
pumping of the present
invention being applied in the total heat exchanger.
FIG. 7 is the third structural block schematic view of the embodiment showing
the double flow-
circuit heat exchange device for periodic positive and reverse directional
pumping of the present
invention being applied in the total heat exchanger.
FIG. 8 is the schematic view showing operating principles of the conventional
heat exchange
device having pumping fluids in different flowing directions during
simultaneous operation.
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FIG. 9 is the schematic view showing the operation principles of the present
invention.
FIG. 10 is the temperature distribution diagram of the heat exchange layer of
the conventional heat
exchange device having pumping fluids in different flowing directions during
simultaneous
operation.
FIG. 11 is the temperature distribution variation diagram of the heat exchange
layer of the present
invention during simultaneous operation.
FIG. 12 is the humidity distribution diagram of the total heat exchanger layer
of the conventional
heat exchange device having pumping fluids in different flowing directions
during simultaneous
operation being operated as the total heat exchange device having
dehumidification function.
FIG. 13 is the humidity distribution diagram of the operating total heat
exchange layer of the total
heat exchange device having dehumidification function of the present
invention.
FIG. 14 is the structural principal schematic view of FIG. 2 being
additionally installed with the
gaseous or liquid fluid composition detecting device.
FIG. 15 is the structural principal schematic view of FIG. 3. being
additionally installed with the
gaseous or liquid fluid composition detecting device.
FIG. 16 is the structural principal schematic view of FIG. 4 being
additionally installed with the
gaseous or liquid fluid composition detecting device.
FIG. 17 is the structural principal schematic view of FIG. 5 being
additionally installed with the
gaseous or liquid fluid composition detecting device.
FIG. 18 is the structural principal schematic view of FIG. 6 being
additionally installed with the
gaseous or liquid fluid composition detecting device.
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CA 02673107 2016-02-01
FIG. 19 is the structural principal schematic view of FIG. 7 being
additionally installed with the
gaseous or liquid fluid composition detecting device.
FIG. 20 is the embodied schematic view of the present invention showing that
at least two fluid
pumps capable of bi-directionally fluid pumping are installed between the
fluid source and both
ends of common inlet/outlet port of the first fluid circuit and the second
fluid circuit.
FIG. 21 is the embodied schematic view of present invention showing that at
least four bi-
directional fluid pumps are installed, wherein two of the bi-directional fluid
pumps are installed at
the fluid ports (a), (b) of two ends of the first fluid circuit of the heat
exchange device, while the
other two of the bi-directional fluid pumps are installed at the fluid ports
(c), (d) of two ends of the
second fluid circuit.
FIG. 22 is the embodied schematic view of the present invention showing that
at least four
unidirectional fluid pumps are installed, wherein two of the unidirectional
fluid pumps are installed
at the fluid ports (a), (b) of two ends of the first fluid circuit of the heat
exchange device, while the
other two of the hi-directional fluid pumps are installed at the fluid ports
(c), (d) of two ends of the
second fluid circuit.
DESCRIPTION OF MAIN COMPONENT SYMBOLS
11: Temperature detecting device
21: Humidity detecting device
31: Gaseous or liquid fluid composition detecting device
100: Heat exchanger
111, 112, 113, 114: Bi-directional fluid pump
120, 120', 120 a, 120 b, 120 c, 120 d: Unidirectional fluid pumping device.
123: Bi-directional fluid pumping device
140: Bi-directional fluid pump
200: Total heat exchanger
250: Periodic fluid direction-change operative control device
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300: Power source
1000: Heat Exchange device
a, b, c, d: fluid port
DETAILED DESCRIPTION
FIG. 1 is a schematic view showing operating principles of the conventional bi-
directional heat
exchange device or total heat exchange device. As shown in FIG. 1, the
conventional bi-directional
heat exchange device or total heat exchange device has two fluid pumping
devices to pump the
fluids in different flowing directions and four fluid ports, wherein the four
fluid ports correspond
to two fluid circuits having a temperature difference. The two fluid circuits
are pumped in different
flowing directions to pass through the heat exchanger (100) inside the heat
exchange device (1000)
via the four fluid ports on the two sides. The two fluid circuits enter from
first and second fluid
ports on opposite sides and discharge from third and fourth fluid ports at the
respective
corresponding other side.
For example, a heat exchange device for indoor-outdoor air exchange in cold
winter times has a
pump that pumps the higher indoor temperature air flow through the heat
exchange device (1000)
via the first fluid port (a) and is discharged to the outdoors from the second
fluid port (b) via a first
fluid circuit at one side of the heat exchanger (100). In the other direction,
a second fluid circuit
having the lower temperature outdoor fresh air is pumped through the heat
exchange device (1000)
via the third fluid port (c) at another side and discharged indoors from the
fourth fluid port (d) via
the fluid circuit at the other side of the heat exchanger (100). The first
fluid port (a) and the fourth
fluid port (d) are disposed at the sides of the heat exchanger connected
indoors while the third fluid
port (c) and the second fluid port (b) are disposed outdoors.
The first fluid circuit has a temperature distribution between the first fluid
port (a) and the second
fluid port (b), wherein the first fluid port (a) has a higher temperature as
compared to a lower
temperature at the second fluid port (b). The second fluid circuit on the
other side of the heat
exchanger (100) has a temperature distribution wherein the temperature
gradually rises to a higher
temperature between the third fluid port (c) to the fourth fluid port (d). The
efficiency of the heat
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CA 02673107 2016-02-01
exchange is determined by fluid property, fluid speed and the temperature
difference of the fluids
at the two sides of heat exchanger of the heat exchange device.
In the case of a heat exchanger that is interposed or coated with permeation
or absorbability type
desiccant material, or the heat exchanger itself is the total heat exchanger
having concurrent
moisture absorbing function, then the two fluid circuits in different flowing
directions form
temperature difference and humidity saturation degree difference at the two
inlet and outlet ports
and at the two sides of the heat exchanger device (1000).
FIG. 2 is the first structural block schematic view of the embodiment showing
the double flow-
circuit heat exchange device for periodic positive and reverse directional
pumping of the present
invention being applied in the heat exchanger. As shown in FIG. 2, the double
flow-circuit heat
exchange device for periodic positive and reverse directional pumping
comprises a conventional
bi-directional heat exchange device (1000) but is further installed with bi-
directional fluid
pumping device (123) which is capable of positive and reverse directional
pumping by having at
least two bi-directional fluid pumps (140). Additionally, the double flow-
circuit heat exchange
device is further installed with a fluid direction-change operative control
device (250) for
operatively controlling the bi-directional fluid pumping device (123) so as to
periodically change
the flowing directions of the pumping fluid. The operative control device
(250) operates the two
bi-directional fluid pumps of the bi-directional fluid pumping device (123)
and is driven by power
source (300). The fluids of the first and second fluid circuits are constantly
maintained in two
different flowing directions to pass through the heat exchanger (100).
The heat exchange device comprises two bi-directional fluid pumps capable of
producing positive
pressure to push fluids or negative pressure to attract fluids, to constitute
a bi-directional fluid
pumping device (123) for the application of pumping gaseous or liquid state
fluids. Additionally,
four fluid ports are installed at the heat exchange device (1000) to drive the
bi-directional fluid
pump (140) at the two sides of the heat exchanger (100) inside the heat
exchange device (1000)
by the electric power from power source (300) through the control of the
periodic fluid directional-
change operative control device (250). Furthermore, the flowing direction of
the two fluid circuits
are respectively fed or discharged from the fluid ports at different sides,
and discharged or fed via
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CA 02673107 2016-02-01
the fluid port at the corresponding other side. In other words, a fluid is
pumped into the heat
exchanger (100) of the heat exchange device (1000) through the first fluid
port (a), and passes
through the first fluid circuit at one side of the heat exchanger (100) and is
discharged outdoors
via the second fluid port (b). A second fluid is pumped into the heat
exchanger (100) of the heat
exchange device (1000) through the third fluid port (c), and passes through
the second fluid circuit
at the other side of the heat exchanger (100) and is discharged outdoors via
the fourth fluid port
(d). Since the first fluid port (a) and the second fluid port (b) are used to
connect the first fluid
circuit, while the third fluid port (c) and the fourth fluid port (b) are used
to connect the second
fluid circuit, the flowing directions of the two fluid circuits can be
periodically changed.
The heat exchange device further comprises a heat exchanger (100), which has
two internal flow
channels with heat absorbing/releasing capability. The two flow channels are
individually set with
two fluid ports for separately pumping the fluid and has a conventional heat
exchange structure
that allows heat exchanging between two fluids.
Additionally, at least one temperature detecting device (11) can be installed
on the heat exchange
device in a position capable of directly or indirectly detecting the
temperature variation of the
pumped fluid. The detected temperature signal can then be used as a reference
to determine the
timing for the periodic switching of the fluid flowing direction.
The bi-directional fluid pumping device (123) has two bi-directional pumps
(140) capable of
producing positive pressure to push fluid or negative pressure to attract
fluid. The fluid can be
pumped in opposite directions by the bi-directional pumps to constitute the bi-
directional fluid
pumping device (123) for pumping gaseous or liquid state fluids. The two fluid
pumps can be
respectively equipped with an electric motor or share a common electric motor,
thereby being
subject to the operative control of the periodic fluid direction-change
operative control device
(250) to rotate between a positive and reverse pressure to change the flowing
direction of the
pumping fluid. The fluid pumps are also capable of simultaneously pumping in
opposite directions
individually as well as periodically changing the pumping directions.
Additionally, said bi-
directional fluid pumping device (123) and said heat exchange device (1000)
can be arranged as
an integral structure or as separated structures.
8

CA 02673107 2016-02-01
Power source (300) is connected to the heat exchange device to provide an
operating power source,
which includes a AC or DC power system or standalone electric power supplying
devices.
The periodic fluid direction-change operative control device (250) comprises
electromechanical
components, solid state electronic components, or microprocessors with related
software and
control interfaces to operatively control the two bi-directional fluid pumps
(140) inside the bi-
directional fluid pumping device (123) for periodically changing the flowing
direction of the two
fluids in different flowing directions passing through the heat exchange
device (1000), thereby
operatively controlling the temperature distribution status between the fluids
and the heat
exchanger (100) of the heat exchange device (1000).
The control of the timing for the periodic fluid direction-change could be 1)
an open-loop operation
with pre-set periodic fluid direction changing timing; or 2) randomly manual
switching; or 3)
installing at least one temperature detecting device (11) at a position
capable of directly or
indirectly detecting the temperature variation of pumping fluid, wherein the
detected signal is used
as the reference to determine the periodic switching timing of fluid flowing
direction change
operation.
FIG. 3 is the second structural block schematic view of the embodiment showing
the double flow-
circuit heat exchange device for periodic positive and reverse directional
pumping of the present
invention being applied in the heat exchanger. As shown in FIG. 3, the first
fluid port (a), the
second fluid port (b), the third fluid port (c), and the fourth fluid port (d)
of bi-directional fluid in
the heat exchange device (1000) are respectively installed with bi-directional
fluid pumps (111),
(112), (113), (114) which are capable of producing negative pressure or
positive pressure
constitutes the bi-directional fluid pumping device (123). The bi-directional
fluid pumps (111),
(112), (113), (114) are capable of producing negative pressure or positive
pressure in the bi-
directional fluid pumping device (123) and are driven by electric power source
(300) to
periodically change the flowing direction of the pumping fluid and constantly
maintain the two
fluid circuits which through the heat exchanger (100) flowing in different
directions.
9

CA 02673107 2016-02-01
The heat exchange device (1000) and the bi-directional fluid pumps (111),
(112), (113), (114)
which are capable of producing negative pressure or positive pressure could be
integrated as one
device or the bi-directional fluid pumps can be separately installed to
constitute the function of bi-
directional fluid pumping device (123). Additionally, the four bi-directional
fluid pumps (111),
(112), (113), (114) which are capable of producing negative pressure or
positive pressure can be
separately installed at first fluid port (a), second fluid port (b), third
fluid port (c) and fourth fluid
port (d) for generating the pumping to change fluids in different flowing
directions. The
aforementioned bi-directional fluid pumps (111), (112), (113), (114) which are
capable of
producing negative pressure or positive pressure are controlled by the
periodic fluid direction-
change operative control device (250). The fluid pumps (111) and (113) that
are installed at first
fluid port (a) and third fluid port (c) form one set, which can be driven by
individually installed
electric motors, or jointly driven by single electric motor, while the fluid
pumps (112) and (114)
form another set and can also be driven by individually installed electric
motors, or jointly driven
by single electric motor. The periodic fluid direction-change operative
control device (250) can be
controlled to provide one or multiple of the following operating functions,
including: 1) the partial
control of the bi-directional fluid pumps to alternately pump periodically in
negative pressure to
allow the two fluid circuits in different flowing directions to change flowing
directions; or 2) the
partial control of the bi-directional fluid pumps to alternately pump
periodically in positive
pressure to allow the two fluid circuits in different flowing to change
flowing directions; 3) the
partial or full control of the bi-directional fluid pumps to form auxiliary
pumping by the positive
pressure pumping and negative pressure pumping generated by different fluid
pumps in the same
fluid circuits, thereby allowing two fluid circuits in different flowing
directions to periodically
change flowing direction. In the aforementioned functions, the flowing
direction of the fluid inside
the two channels at both sides of the heat exchanger (100) in the heat
exchange device (1000)
maintains opposite flowing directions.
Furthermore, the at least one temperature detecting device (11) can be
installed at a position
capable of directly or indirectly detecting the temperature variation of
pumping fluid, wherein the
detected signal is used as the reference to determine the periodic switch
timing of the fluid flowing
direction change operation.

CA 02673107 2016-02-01
Bi-directional fluid pumping device (123) comprises bi-directional first fluid
port (a), second fluid
port (b), third fluid port (c), and fourth fluid port (d) which are
individually installed with bi-
directional fluid pumps (111), (112), (113), (114) capable of producing
negative pressure or
positive pressure. The periodic fluid direction-change operative control
device (250) operatively
controls the bi-directional fluid pumping device (123) which is driven by
electric power source
(300) to periodically change the fluid direction changing operation, and
constantly maintain the
two fluid circuits which flow through the heat exchanger (100) in different
directions. The power
source (300) provides the operating power source, including AC or DC city
power or acts as a
standalone electric power supplying devices.
The periodic fluid direction-change operative control device (250) comprises
electromechanical
components, solid state electronic components, or microprocessors with related
software and
control interfaces to operatively control the individual bi-directional fluid
pumps (111), (112),
(113), (114) that constitute the bi-directional fluid pumping device (123).
The periodic fluid
direction changing operation of the two different fluids flowing through the
heat exchange device
is controlled so that the temperature distribution status between the fluid
and the heat exchanger
(100) of the heat exchange device is controlled.
The heat exchanger (100) has two internal flow channels with heat
absorbing/releasing capability.
The two internal flow channels are individually set with two fluid ports at
both sides to separately
pump fluids and has a conventional heat exchange structure for the function of
heat exchanging
between two fluids.
The timing of periodic fluid direction-change can be controlled as: 1) an open-
loop operation with
pre-set periodic fluid direction changing timing; or 2) randomly manual
switching; or 3) installing
at least one temperature detecting device (11) at a position capable of
directly or indirectly
detecting the temperature variation of pumping fluid, so that the detected
signal is used as the
reference to determine the periodic switching timing of fluid flowing
direction change operation.
FIG. 4 is the third structural block schematic view of an embodiment of the
invention showing the
double flow-circuit heat exchange device for periodic positive and reverse
directional pumping in
11

CA 02673107 2016-02-01
the heat exchanger. As shown in FIG. 4, the first fluid port (a), the second
fluid port (b), the third
fluid port (c), the fourth fluid port (d) of the two flow channels of the two
bi-directional fluid of
the heat exchanging device (1000) have the unidirectional fluid pump (120a),
(120b), (120c),
(120d) for the unidirectional pumping that constitute the bi-directional fluid
pumping device (123).
The unidirectional fluid pumps are supplied with electrical power from the
electrical power source
(300) through the periodic fluid direction-change operative control device
(250) to control the
unidirectional pumps (120a), (120b), (120c), (120d) of the bi-directional
fluid pumping device
(123) to periodical change the flowing direction of the pumping fluid, and to
constantly maintain
the fluid flowing directions of both circuits passing through the heat
exchanger (100) in different
direction.
In this embodiment, the heat exchanging device (1000) and unidirectional fluid
pumps (120a),
(120b), (120c), (120d) could be integrated as one device or separately
installed to constitute the
function of bi-directional fluid pumping device (123), wherein the four
unidirectional fluid pumps
(120a), (120b), (120c), (120d) are separately installed at first fluid port
(a), second fluid port (b),
third fluid port (c) and fourth fluid port (d) for fluid pumping, and wherein
the aforementioned
unidirectional fluid pumps (120a), (120b), (120c), (120d) are controlled by
the periodic fluid
direction-change operative control device (250). The unidirectional fluid
pumps (120a) and (120c)
installed at first fluid port (a) and third fluid port (c) to form one set of
pumps, which can be driven
by individually installed electric motors, or jointly driven by single
electric motor. The other
unidirectional fluid pumps (120b) and (120c) form another set of pumps, which
can be driven by
individually installed electric motors, or jointly driven by single electric
motor. Under the control
of periodic fluid direction-change operative control device (250) one or
multiple of the following
functions can be provided, including: 1) the arrangement of unidirectional
pumps for negative
pressure pumping on fluids, wherein the unidirectional fluid pump (120a) and
unidirectional fluid
pump (120c) form one set, and the unidirectional fluid pump (120b) and
unidirectional fluid pump
(120d) form the other set, so that the two sets alternately provide periodic
negative pressure
pumping to make the fluids flow in different flowing directions in the two
channels and changing
their flowing direction periodically; or 2) the arrangement of unidirectional
pumps for positive
pressure pumping on fluids, wherein the unidirectional fluid pump (120a) and
unidirectional fluid
pump (120c) form one set, and the unidirectional fluid pump (120b) and
unidirectional fluid pump
12

CA 02673107 2016-02-01
(120d) form the other set, so that the two sets alternately provide periodic
positive pressure
pumping to make the fluids flow in different flowing directions in the two
channels and changing
their flowing direction periodically.
In the aforementioned two functions, the flowing direction of the fluid inside
the two channels at
both sides of the heat exchanger (100) in the heat exchange device (1000)
maintains opposite
flowing directions.
The at least one temperature detecting device (11) can be installed at a
position capable of directly
or indirectly detecting the temperature variation of pumping fluid, wherein
the detected signal is
used as the reference to determine the periodic switch timing of the fluid
flowing direction change
operation.
Bi-directional fluid pumping device (123) comprises bi-directional first fluid
port (a), second fluid
port (b), third fluid port (c), and fourth fluid port (d) which are
individually installed with
unidirectional fluid pumps (120 a), (120 b), (120 c), (120 d) capable of
unidirectional pumping to
constitute the bi-directional fluid pumping device (123). The periodic fluid
direction-change
operative control device (250) operatively controls the bi-directional fluid
pumping device (123)
which is driven by electric power source (300) to periodically change the
fluid direction changing
operation, and constantly maintain the two fluid circuits which flow through
the heat exchanger
(100) in different directions.
The power source (300) provides the operating power source, including AC or DC
city power or
acts as standalone electric power supplying devices.
The periodic fluid direction-change operative control device (250) comprises
electromechanical
components, solid state electronic components, or microprocessors with related
software and
control interfaces to operatively control individual unidirectional fluid
pumps (120 a), (120 b),
(120 c), (120 d) that constitute the bi-directional fluid pumping device
(123). The periodic fluid
direction changing operation controls the different flowing direction of the
fluids through the two
13

CA 02673107 2016-02-01
channels of the heat exchanger (100), thereby operatively controlling the
temperature distribution
status between the fluid and the heat exchanger (100) of the heat exchange
device (1000).
The heat exchanger (100) has two internal flow channels with heat
absorbing/releasing capability,
wherein the two flow channels are individually set with two fluid ports at
both sides for separately
pumping fluids and has a conventional heat exchange structure for the function
of heat exchanging
between two fluids.
The timing of the periodic fluid direction-change operation can be by: 1) open-
loop operation with
pre-set periodic fluid direction changing timing; or 2) randomly manual
switching; or 3) installing
at least one temperature detecting device (11) at a position capable of
directly or indirectly
detecting the temperature variation of pumping fluid, wherein the detected
signal is used as the
reference to determine the periodic switching timing of fluid flowing
direction change operation.
FIG. 5 is the first structural block schematic view of the embodiment showing
the double flow-
circuit heat exchange device for periodic positive and reverse directional
pumping of the present
invention being applied in the total heat exchanger. As shown in FIG. 5, the
conventional bi-
directional heat exchange device (1000) can be further installed with the bi-
directional fluid
pumping device (123) capable of positive and reverse directional pumping
having two bi-
directional fluid pumps (140), and installed with the periodic fluid direction-
change operative
control device (250) for operatively controlling the bi-directional fluid
pumping device (123) to
allow the two different direction fluids to periodically change the flowing
directions that is
operated with the two bi-directional fluid pumps (140) driven by power source
(300). The two
fluid circuits are constantly maintained in two different flowing directions
to pass through the total
heat exchanger (200) inside the heat exchange device (1000).
In this embodiment both or either one of the at least one temperature
detecting device (11) and the
at least one humidity detecting device (21) can be installed at positions
capable of directly or
indirectly detecting the temperature variation and humidity variation of the
pumping fluid, wherein
the detected signals are used as the reference to determine the periodic
switch timing for the fluid
14

CA 02673107 2016-02-01
flowing direction change operation. The aforementioned temperature detecting
device (11) and
humidity detecting device (21) can be in an integral structure or in separated
structures.
Here the bi-directional fluid pumping device (123) comprises two bi-
directional pumps (140)
capable of producing positive pressure to push fluid or negative pressure to
attract fluid in opposite
directions to constitute the bi-directional fluid pumping device (123) for
pumping gaseous or liquid
state fluids. The two fluid pumps pump in opposite directions and can be
separately equipped with
an electric motor or share a common electric motor, thereby being subject to
the operative control
of the periodic fluid direction-change operative control device (250) to
rotate positively or
reversely to change the flowing direction of the pumping fluid. The fluid
pumps can be capable of
simultaneously pumping in opposite directions individually as well as
periodically changing the
pumping directions.
The above pumping methods include 1) producing negative pressure to push the
fluid; or 2)
producing positive pressure to attract the fluid. Additionally, the bi-
directional fluid pumping
device (123) and said heat exchange device (1000) can be installed as an
integral structure or as
separated structures. Power source (300) is also provided as the operating
power source, including
AC or DC city power or acts as standalone electric power supplying devices.
The periodic fluid direction-change operative control device (250) comprises
electromechanical
components, solid state electronic components, or microprocessors with related
software and
control interfaces to operatively control the two bi-directional fluid pumps
(140) inside the bi-
directional fluid pumping device (123) for periodically changing the flowing
direction of the two
fluids in different flowing directions flowing through the heat exchange
device (1000), thereby
operatively controlling 1) the temperature distribution status; or 2) the
humidity distribution status;
or 3) both of the temperature and humidity distribution between the fluid and
the total heat
exchanger (200) of the heat exchange device (1000).
Total heat exchanger (200) has two internal flow channels with heat
absorbing/releasing and
humidity absorbing/releasing capability, wherein the two flow channels are
individually set with
two fluid ports at both sides for separately fluid pumping and is constituted
by conventional total

CA 02673107 2016-02-01
heat exchange structure for the function of heat exchanging between two fluids
and function of de-
humid capability.
The timing of the periodic direction change of the flowing fluid can be by: 1)
an open-loop
operation with pre-set periodic fluid direction changing timing; or 2)
randomly manual switching;
or 3) installing both or either one of the at least one temperature detecting
device (11) and the at
least one humidity detecting device (21) at positions capable of directly or
indirectly detecting the
temperature variation and humidity variation of pumping fluid, wherein the
detected signals are
used as the reference to determine the periodic switch timing of fluid flowing
direction change
operation.
FIG. 6 is the second structural block schematic view of the embodiment showing
the double flow-
circuit heat exchange device for periodic positive and reverse directional
pumping of the present
invention being applied in the full heat exchanger. As shown in FIG. 6, the
first fluid port (a),
second fluid port (b), third fluid port (c), and fourth fluid port (d) of bi-
directional fluid heat
exchange device (1000) are respectively installed with bi-directional fluid
pumps (111), (112),
(113), (114) which are capable of producing negative pressure or positive
pressure to constitute
the bi-directional fluid pumping device (123). The bi-directional fluid pumps
(111), (112), (113),
(114) are capable of producing negative pressure or positive pressure in the
bi-directional fluid
pumping device (123) driven by electric power source (300) through the
periodic fluid direction-
change operative control device (250) to periodically change the flowing
direction of the pumping
fluid and constantly maintain the two fluid circuits flowing in different
directions.
The heat exchange device (1000) and the bi-directional fluid pumps (111),
(112), (113), (114)
which are capable of producing negative pressure or positive pressure can be
integrated in one
device or separately installed to constitute the function of the bi-
directional fluid pumping device
(123). The four bi-directional fluid pumps (111), (112), (113), (114) are
separately installed at first
fluid port (a), second fluid port (b), third fluid port (c) and fourth fluid
port (d) for generating the
pumping to change the fluids to different flowing directions. Additionally,
the aforementioned bi-
directional fluid pumps (111), (112), (113), (114) are controlled by the
periodic fluid direction-
change operative control device (250). The fluid pumps (111) and (113) can be
installed at first
16

CA 02673107 2016-02-01
fluid port (a) and third fluid port (c) to form one set of pumps, which could
be driven by
individually installed electric motors, or jointly driven by single electric
motor, while the fluid
pumps (112) and (114) form another set, which could be driven by individually
installed electric
motors, or jointly driven by single electric motor, under the control of
periodic fluid direction-
change operative control device (250). The periodic fluid direction-change
operative control
device (250) is controlled to provide one or multiple following operating
functions, including: 1)
partial control of the bi-directional fluid pumps so that the pumps
alternately pump in negative
pressure to allow the two fluid circuits in different flowing directions to
periodically flow in
changing directions; or 2) partial control of the bi-directional fluid pumps
to alternately pump in
positive pressure periodically to allow the two fluid circuits flowing in
different flowing directions
to periodically change flowing directions; 3) partial or all of the hi-
directional fluid pumps forming
auxiliary pumping by the positive pressure pumping and negative pressure
pumping generated by
different fluid pumps in the same fluid circuits, thereby allowing two fluid
circuits in different
flowing directions to periodically change flowing direction. In the
aforementioned functions, the
flowing direction of the fluid inside the two channels at both sides of the
total heat exchanger (200)
in the heat exchange device (1000) maintains opposite flowing directions.
Both or either one of the at least one temperature detecting device (11) and
the at least one humidity
detecting device (21) are installed at positions capable of directly or
indirectly detecting the
temperature variation and humidity variation of pumping fluid, wherein the
detected signals are
used as the reference to determine the periodic switch timing of fluid flowing
direction change
operation. The aforementioned temperature detecting device (11) and humidity
detecting device
(21) can be in installed as an integral structure or as separated structures.
Bi-directional fluid pumping device (123) comprises first fluid port (a),
second fluid port (b), third
fluid port (c), and fourth fluid port (d) and are individually installed with
bi-directional fluid pumps
(111), (112), (113), (114) capable of producing positive pressures or negative
pressure, thereby to
constitute the bi-directional fluid pumping device (123). The periodic fluid
direction-change
operative control device (250) operatively controls the bi-directional fluid
pumping device (123)
which is driven by electric power source (300) for periodic fluid direction
changing operation, and
constantly maintains the two fluid circuits flowing in different direction;
17

CA 02673107 2016-02-01
The power source (300) provides the operating power source, including AC or DC
city power or
acts as standalone electric power supplying devices. The periodic fluid
direction-change operative
control device (250) comprises electromechanical components, solid state
electronic components,
or microprocessors with related software and control interfaces to operatively
control the bi-
directional fluid pumps (111), (112), (113), (114) capable of producing
negative pressure or
positive pressure to constitute the bi-directional fluid pumping device (123),
for the periodic fluid
direction changing operation of the two different direction fluid through the
two channels of the
heat exchanging device to control 1) the temperature distribution status; or
2) the humidity
distribution status; or 3) both of the temperature and humidity distribution
between the fluid and
the total heat exchanger (200) of the heat exchange device.
Total heat exchanger (200) has two internal flow channels with heat
absorbing/releasing and
humidity absorbing/releasing capability, wherein the two flow channels are
individually set with
two fluid ports at both sides for separately pumping fluid and has a
conventional total heat
exchange structure for the function of heat exchanging between two fluids and
function of de-
humid capability.
The timing of periodic direction change of flowing fluid can be controlled as:
1) an open-loop
operation with pre-set periodic fluid direction changing timing; or 2)
randomly manual switching;
or 3) installing both or either one of the at least one temperature detecting
device (11) and the at
least one humidity detecting device (21) at positions capable of directly or
indirectly detecting the
temperature variation and humidity variation of pumping fluid, wherein the
detected signals are
used as the reference to determine the periodic switch timing of fluid flowing
direction change
operation.
FIG. 7 is the third structural block schematic view of the embodiment showing
the double flow-
circuit heat exchange device for periodic positive and reverse directional
pumping of the present
invention being applied in the full heat exchanger. As shown in FIG. 7, the
first fluid port (a),
second fluid port (b), third fluid port (c), and fourth fluid port (d) of the
two flow channels of the
two bi-directional fluid of heat exchanging device (1000) of the present
invention are separately
18

CA 02673107 2016-02-01
installed with the unidirectional fluid pump (120a), (120b), (120c), (120d)
for unidirectional
pumping to constitute the bi-directional fluid pumping device (123). The
electrical power is
supplied from the electrical power source (300) through the periodic fluid
direction-change
operative control device (250) to control the unidirectional pumps (120a),
(120b), (120c), (120d)
of the bi-directional fluid pumping device (123) to periodically change the
flowing direction of the
pumping fluid, and to constantly maintain the fluid flowing directions of both
circuits in different
directions.
In this embodiment, the heat exchanging device (1000) and unidirectional fluid
pumps (120a),
(120b), (120c), (120d) could be integrated as one device or separately
installed to constitute the
function of bi-directional fluid pumping device (123), wherein the four
unidirectional fluid pumps
(120a), (120b), (120c), (120d) are separately installed at first fluid port
(a), second fluid port (b),
third fluid port (c) and fourth fluid port (d) for fluid pumping, and wherein
the aforementioned
unidirectional fluid pumps (120a), (120b), (120c), (120d) are controlled by
the periodic fluid
direction-change operative control device (250). The unidirectional fluid
pumps (120a) and (120c)
installed at first fluid port (a) and third fluid port (c) to form one set of
pumps, which can be driven
by individually installed electric motors, or jointly driven by single
electric motor, while the
unidirectional fluid pumps (120b) and (120c) form another set, which could be
driven by
individually installed electric motors, or jointly driven by single electric
motor.
Under the control of periodic fluid direction-change operative control device
(250) one or multiple
of the following functions can be provided, including:
1) The arrangement of unidirectional pumps for negative pressure pumping on
fluids, wherein the
unidirectional fluid pump (120a) and unidirectional fluid pump (120c) form one
set, and the
unidirectional fluid pump (120b) and unidirectional fluid pump (120d) form the
other set, and that
the two sets provide periodic negative pressure pumping alternately making the
fluids with
different flowing direction change their flowing direction periodically; or
2) The arrangement of unidirectional pumps for positive pressure pumping on
fluids, wherein the
unidirectional fluid pump (120a) and unidirectional fluid pump (120c) form one
set, and the
unidirectional fluid pump (120b) and unidirectional fluid pump (120d) form the
other set, and that
19

CA 02673107 2016-02-01
the two sets provide periodic positive pressure pumping alternately making the
fluids with different
flowing direction change their flowing direction periodically.
In the aforementioned functions, the flowing direction of the fluid inside the
two channels at both
sides of total heat exchanger (200) in the heat exchange device (1000)
maintains opposite flowing
directions.
Both or either one of the at least one temperature detecting device (11) and
the at least one humidity
detecting device (21) are installed at positions capable of directly or
indirectly detecting the
temperature variation and humidity variation of pumping fluid, wherein the
detected signals are
used as the reference to determine the periodic switch timing of fluid flowing
direction change
operation. Aforementioned temperature detecting device (11) and humidity
detecting device (21)
can be in an integral structure or in separated structures.
Bi-directional fluid pumping device (123) comprises first fluid port (a),
second fluid port (b), third
fluid port (c), and fourth fluid port (d) and are individually installed with
bi-directional fluid pumps
(120a), (120b), (120c), (120d) capable of producing positive pressures or
negative pressure,
thereby to constitute the bi-directional fluid pumping device (123). The
periodic fluid direction-
change operative control device (250) operatively controls the bi-directional
fluid pumping device
(123) which is driven by electric power source (300) for periodic fluid
direction changing
operation, and constantly maintains the two fluid circuits flowing in
different directions. The
power source (300) provides the operating power source, including AC or DC
city power or acts
as standalone electric power supplying devices.
The periodic fluid direction-change operative control device (250) comprises
electromechanical
components, solid state electronic components, or microprocessors with related
software and
control interfaces to operatively control individual unidirectional fluid
pumps (120a), (120b),
(120c), (120d) that constitute the hi-directional fluid pumping device (123),
for the periodic fluid
direction changing operation of the two different direction fluid through the
two channels of the
heat exchange device to control 1) the temperature distribution status; or 2)
the humidity
distribution status; or 3) both of the temperature and humidity distribution
between the fluid and
the total heat exchanger (200) of the heat exchange device.

CA 02673107 2016-02-01
Total heat exchanger (200) has two internal flow channels with heat
absorbing/releasing and
humidity absorbing/releasing capability, wherein the two flow channels are
individually set with
two fluid ports at both sides for separately pumping fluid and has a
conventional total heat
exchange structure for the function of heat exchanging between two fluids and
function of de-
humid capability.
The timing of periodic direction change of flowing fluid can be controlled as:
1) an open-loop
operation with pre-set periodic fluid direction changing timing; or 2)
randomly manual switching;
or 3) installing both or either one of the at least one temperature detecting
device (11) and the at
least one humidity detecting device (21) at positions capable of directly or
indirectly detecting the
temperature variation and humidity variation of pumping fluid, wherein the
detected signals are
used as the reference to determine the periodic switch timing of fluid flowing
direction change
operation.
The heat exchanger or total heat exchanger of the double flow-circuit heat
exchange device for
periodic positive and reverse directional pumping can have the following
structural configurations:
1) a tubular structure in linear or other geometric shapes; or 2) a multi-
layer structure having fluid
path for passing gaseous or liquid state fluids; or 3) one or more than one
flow circuit in series
connection, parallel connection or series and parallel connection.
A comparison of a traditional heat exchange device and the present invention,
that is the double
flow-circuit heat exchange device for periodic positive and reverse
directional pumping, is shown
in FIG. 8, FIG. 9, FIG. 10 and FIG. 11.
FIG. 8 is the schematic view showing operating principles of the conventional
heat exchange
device having pumping fluids in different flowing directions during
simultaneous operation.
FIG. 9 is the schematic view showing the operation principles of the present
invention.
21

CA 02673107 2016-02-01
FIG. 10 is the temperature distribution diagram of the heat exchange layer of
the conventional heat
exchange device having pumping fluids in different flowing directions during
simultaneous
operation.
FIG. 11 is the temperature distribution variation diagram of the heat exchange
layer of the present
invention during simultaneous operation.
FIG. 12 and FIG. 13 illustrate the comparison of conventional heat exchange
device and the heat
exchanger of the double flow-circuit heat exchange device for periodic
positive and reverse
directional pumping of the present invention applied in total heat exchange
device.
FIG. 12 is the humidity distribution diagram of the total heat exchanger layer
of the conventional
heat exchange device having pumping fluids in different flowing directions
during simultaneous
operation being operated as the total heat exchange device having
dehumidification function.
FIG. 13 is the humidity distribution diagram of the operating total heat
exchange layer of the total
heat exchange device having dehumidification function of the present
invention.
From the difference of the temperature difference distribution and humidity
distribution in
aforementioned FIG. 10, FIG. 11, FIG. 12, FIG. 13 shows the advantage of
present invention on
promoting the heat exchanging effectiveness as well as the total heat
exchanging performance.
The double flow-circuit heat exchange device for periodic positive and reverse
directional
pumping of the present invention further can be installed with at least one or
more than one
detecting device such as a temperature detecting device (11), humidity
detecting device (21), and
gaseous or liquid fluid composition detecting device (31) on the heat exchange
device (1000), heat
exchanger (100) or total heat exchanger (200) at positions near both or one of
the first fluid port
(a) and second fluid port (b), or at positions near both or one of the third
fluid port (c) and fourth
fluid port (d), or at other positions capable of detecting exchanging fluids.
The aforementioned
detecting devices can provide the detected signal as the reference for the
operation of one or more
than one functions as follows, including: 1) as the reference for operatively
controlling the periodic
22

CA 02673107 2016-02-01
switch timing of fluid flowing direction pumped by the bi-directional fluid
pumping devices (123);
or 2) as the reference for operatively controlling the bi-directional fluid
pumping devices (123) to
control the speed or the flow rate of the pumping fluid; or 3) as the
reference for operatively
controlling the open volume of the fluid valve to control the speed or the
flow rate of the pumping
fluid.
For the aforementioned temperature detecting device (11), humidity detecting
device (21), and the
gaseous or liquid fluid composition detecting device (31), all detecting
devices can be in an integral
structure, or some detecting devices have an integral structure, or each
detecting device is in
separated structure.
As shown in FIG. 14, the structural principal schematic view of FIG. 2 is
additionally installed
with a gaseous or liquid fluid composition detecting device. For the double
flow-circuit heat
exchange device for periodic positive and reverse directional pumping, the
conventional bi-
directional heat exchange device (1000) is further installed with the bi-
directional fluid pumping
device (123) capable of positive and reverse directional pumping having two bi-
directional fluid
pumps (140), and installed with the periodic fluid direction-change operative
control device (250)
for operatively controlling the bi-directional fluid pumping device (123). The
fluid direction-
change operative control device (250) can change the flowing directions of the
pumping fluid by
periodic change of the controls of the two bi-directional fluid pumps of the
bi-directional fluid
pumping device (123) which are driven by power source (300), and can also
constantly maintain
the fluids in two different flowing directions to pass through the heat
exchanger (100) inside the
heat exchange device (1000).
The two bi-directional fluid pumps which are capable of producing positive
pressure to push fluids
or negative pressure to attract fluids are installed as the bi-directional
fluid pumping device (123)
for the application of pumping gaseous or liquid state fluids, and four fluid
ports are installed at
the heat exchange device (1000) to drive the bi-directional fluid pump (140)
at the two sides of the
heat exchanger (100) inside the heat exchange device (1000) by the electric
power from power
source (300) through the control of the periodic fluid directional-change
operative control device
(250). Furthermore, the flowing direction of said two fluid circuits are
respectively fed or
23

CA 02673107 2016-02-01
discharged from the fluid ports at different sides, and discharged or fed via
the fluid port at the
other side. The fluid is also pumped into the heat exchanger (100) of the heat
exchange device
(1000) through the first fluid port (a), passes through the fluid circuit at
one side of the heat
exchanger (100) and is discharged to outdoors via the second fluid port (b) as
well as the fluid is
pumped into the heat exchanger (100) of the heat exchange device (1000)
through the third fluid
port (c), passes through the fluid circuit at the other side of the heat
exchanger (100) and is
discharged to outdoors via the fourth fluid port (d). The first fluid port (a)
and the second fluid port
(b) are disposed for connecting to the same space or object while the third
fluid port (c) and the
fourth fluid port (d) are disposed for connecting to the other space or
objects with temperature
difference, thereby to periodically change the flowing directions of the two
fluid circuits.
The heat exchanger (100) has two internal flow channels with heat
absorbing/releasing capability,
wherein the two flow channels are individually set with two fluid ports for
separately pumping the
fluid and is constituted by conventional heat exchange structure for the
function of heat exchanging
between two fluids. Both or either one of the at least one temperature
detecting device (11) and
the at least one gaseous or liquid fluid composition detecting device (31) are
installed at positions
capable of directly or indirectly detecting the temperature variation, or
gaseous and liquid fluid
composition variation of pumping fluid, wherein the detected signals are used
as the reference to
determine the periodic switching timing of fluid flowing direction change
operation.
The aforementioned temperature detecting device (11) and the gaseous or liquid
fluid composition
detecting device (31) can be constructed as an integral structure or as
separated structures.
The bi-directional fluid pumping device (123) may comprise:
1) Two bi-directional pumps (140) capable of producing positive pressure to
push fluid or negative
pressure to attract fluid are pumped in opposite directions to constitute the
bi-directional fluid
pumping device (123) for pumping gaseous or liquid state fluids, wherein the
two fluid pumps in
opposite directions can be respectively equipped with an electric motor or
share a common electric
motor, thereby being subject to the operative control of the periodic fluid
direction-change
24

CA 02673107 2016-02-01
operative control device (250) to rotate positively or reversely to change the
flowing direction of
the pumping fluid; and
2) Fluid pumps capable of simultaneously pumping in opposite directions
individually as well as
periodically changing the pumping directions.
The above pumping methods include 1) producing negative pressure to push the
fluid; or 2)
producing positive pressure to attract the fluid. Said bi-directional fluid
pumping device (123) and
said heat exchange device (1000) can be constructed as an integral structure
or as separated
structures. Power source (300) provides the operating power source, including
AC or DC city
power or acts as standalone electric power supplying devices.
The periodic fluid direction-change operative control device (250) comprises
electromechanical
components, solid state electronic components, or microprocessors with related
software and
control interfaces to operatively control the two bi-directional fluid pumps
(140) inside the bi-
directional fluid pumping device (123) for periodically changing the flowing
direction of the two
fluids in different flowing directions passing through the heat exchange
device (1000), thereby
operatively controlling the temperature distribution status between the fluids
and the heat
exchanger (100) of the heat exchange device (1000).
The timing of periodic fluid direction-change can be controlled as: 1) an open-
loop operation with
pre-set periodic fluid direction changing timing; or 2) randomly manual
switching; or 3) installing
both or either one of the at least one temperature detecting device (11) and
the at least one gaseous
or liquid fluid composition detecting device (31) at positions capable of
directly or indirectly
detecting the temperature variation, or gaseous and liquid fluid composition
variation of pumping
fluid, wherein the detected signals are used as the reference to determine the
periodic switching
timing of fluid flowing direction change operation.
As shown in FIG. 15, the structural principal schematic view of FIG. 3 is
additionally installed
with the gaseous or liquid fluid composition detecting device. In this
embodiment, the first fluid
port (a), second fluid port (b), third fluid port (c), and fourth fluid port
(d) of hi-directional fluid in
the heat exchange device (1000) are respectively installed with bi-directional
fluid pumps (111),
(112), (113), (114) capable of producing negative pressure or positive
pressure to constitute the

CA 02673107 2016-02-01
bi-directional fluid pumping device (123). The bi-directional fluid pumps
(111), (112), (113),
(114) are capable of producing negative pressure or positive pressure in the
bi-directional fluid
pumping device (123) driven by electric power source (300) to periodically
change the flowing
direction of the pumping fluid and constantly maintain the two fluid circuits
in different directions
through the heat exchanger (100).
Additionally, the heat exchange device (1000) and the bi-directional fluid
pumps (111), (112),
(113), (114) which are capable of producing negative pressure or positive
pressure can be
integrated in one device or separately installed to constitute the function of
bi-directional fluid
pumping device (123). The four bi-directional fluid pumps (111), (112), (113),
(114) are separately
installed at first fluid port (a), second fluid port (b), third fluid port (c)
and fourth fluid port (d) for
generating the pumping to change the fluids to different flowing directions.
Additionally, the
aforementioned bi-directional fluid pumps (111), (112), (113), (114) are
controlled by the periodic
fluid direction-change operative control device (250). The fluid pumps (111)
and (113) can be
installed at first fluid port (a) and third fluid port (c) to form one set of
pumps, which could be
driven by individually installed electric motors, or jointly driven by single
electric motor, while
the fluid pumps (112) and (114) form another set, which could be driven by
individually installed
electric motors, or jointly driven by single electric motor. Under the control
of periodic fluid
direction-change operative control device (250) one or multiple of the
following operating
functions can be provided: 1) partial control of the bi-directional fluid
pumps so that the pumps
alternately pump in negative pressure to allow the two fluid circuits in
different flowing directions
periodically changing flowing directions; or 2) partial control of the bi-
directional fluid pumps to
alternately pump in positive pressure periodically to allow the two fluid
circuits flowing in
different flowing directions to periodically change flowing directions; 3)
partial or all of the bi-
directional fluid pumps forming auxiliary pumping by the positive pressure
pumping and negative
pressure pumping generated by different fluid pumps in the same fluid
circuits, thereby allowing
two fluid circuits in different flowing directions to periodically change
flowing direction. In the
aforementioned functions, the flowing direction of the fluid inside the two
channels at both sides
of the heat exchanger (100) in the heat exchange device (1000) maintains
opposite flowing
directions.
26

CA 02673107 2016-02-01
Both or either one of the at least one temperature detecting device (11) and
the at least one gaseous
or liquid fluid composition detecting device (31) are installed at positions
capable of directly or
indirectly detecting the temperature variation, or gaseous or liquid fluid
composition variation of
pumping fluid. The detected signals are used as the reference to determine the
periodic switch
timing for the fluid flowing direction change operation.
The aforementioned temperature detecting device (11) and gaseous or liquid
fluid composition
detecting device (31) can be installed as an integral structure or as
separated structures. Bi-
directional fluid pumping device (123) comprises first fluid port (a), second
fluid port (b), third
fluid port (c), and fourth fluid port (d) and are individually installed with
bi-directional fluid pumps
(111), (112), (113), (114) capable of producing positive pressures or negative
pressure, thereby to
constitute the bi-directional fluid pumping device (123). The periodic fluid
direction-change
operative control device (250) operatively controls the bi-directional fluid
pumping device (123)
which is driven by electric power source (300) for periodic fluid direction
changing operation, and
constantly maintains the two fluid circuits flowing in different direction.
The power source (300) provides the operating power source, including AC or DC
city power or
acts as standalone electric power supplying devices. The periodic fluid
direction-change operative
control device (250) comprises electromechanical components, solid state
electronic components,
or microprocessors with related software and control interfaces to operatively
control individual
bi-directional fluid pumps (111), (112), (113), (114) that constitute the bi-
directional fluid
pumping device (123), for the periodic fluid direction changing operation of
the two different
direction fluid through the heat exchange device to control the temperature
distribution status
between the fluid and the heat exchanger (100) of the heat exchange device.
The heat exchanger (100) has two internal flow channels with heat
absorbing/releasing capability,
wherein the two flow channels are individually set with two fluid ports at
both sides for separately
fluid pumping and is constituted by conventional heat exchange structure for
the function of heat
exchanging between two fluids.
27

CA 02673107 2016-02-01
The timing of periodic fluid direction-change can be controlled as: 1) an open-
loop operation with
pre-set periodic fluid direction changing timing; or 2) randomly manual
switching; or 3) installing
both or either one of the at least one temperature detecting device (11) and
the at least one gaseous
or liquid fluid composition detecting device (31) at positions capable of
directly or indirectly
detecting the temperature variation, or gaseous or liquid fluid composition
variation of pumping
fluid, wherein the detected signals are used as the reference to determine the
periodic switch timing
of fluid flowing direction change operation.
As shown in FIG. 16, the structural principal schematic view of FIG. 4 is
additionally installed
with the gaseous or liquid fluid composition detecting device. In this
embodiment, the first fluid
port (a), second fluid port (b), third fluid port (c), and fourth fluid port
(d) of the two flow channels
of the two bi-directional fluid of heat exchanging device (1000) of the
present invention can be
separately installed with the unidirectional fluid pump (120a), (120b),
(120c), (120d) for
unidirectional pumping to constitute the hi-directional fluid pumping device
(123). Electrical
power from the electrical power source (300) is provided by the periodic fluid
direction-change
operative control device (250) to control the unidirectional pumps (120a),
(120b), (120c), (120d)
of the bi-directional fluid pumping device (123) to periodically change the
flowing direction of the
pumping fluid, and to constantly maintain the fluid flowing directions in
different directions.
The heat exchanging device (1000) and unidirectional fluid pumps (120a),
(120b), (120c), (120d)
could be integrated as one device or separately installed to constitute the
function of the bi-
directional fluid pumping device (123), wherein the four unidirectional fluid
pumps (120a), (120b),
(120c), (120d) are separately installed at first fluid port (a), second fluid
port (b), third fluid port
(c) and fourth fluid port (d) for fluid pumping. The unidirectional fluid
pumps (120a), (120b),
(120c), (120d) are controlled by the periodic fluid direction-change operative
control device (250).
The unidirectional fluid pumps (120 a) and (120 c) installed at the first
fluid port (a) and third fluid
port (c) can form one set of pumps, which could be driven by individually
installed electric motors,
or jointly driven by single electric motor, while the unidirectional fluid
pumps (120 b) and (120 c)
form another set of pumps, which could be driven by individually installed
electric motors, or
jointly driven by single electric motor. Under the control of periodic fluid
direction-change
operative control device (250), one or multiple of the following functions and
structures can be
28

CA 02673107 2016-02-01
provided, including: 1) The arrangement of unidirectional pumps for negative
pressure pumping
on fluids, wherein the unidirectional fluid pump (120a) and unidirectional
fluid pump (120c) form
one set, and the unidirectional fluid pump (120b) and unidirectional fluid
pump (120d) form the
other set, and that the two sets provide periodic negative pressure pumping
alternately to make the
fluids with different flowing direction in two channels to change their
flowing direction
periodically; or 2) The arrangement of unidirectional pumps for positive
pressure pumping on
fluids, wherein the unidirectional fluid pump (120a) and unidirectional fluid
pump (120c) form
one set, and the unidirectional fluid pump (120b) and unidirectional fluid
pump (120d) form the
other set, and that the two sets provide periodic positive pressure pumping
alternately to make the
fluids with different flowing direction in two channels changing their flowing
direction
periodically. In the aforementioned two functions, the flowing direction of
the fluid inside the two
channels at both sides of the heat exchanger (100) in the heat exchange device
(1000) maintains
opposite flowing directions.
Both or either one of the at least one temperature detecting device (11) and
the at least one gaseous
or liquid fluid composition detecting device (31) can be installed at
positions capable of directly
or indirectly detecting the temperature variation, or gaseous or liquid fluid
composition variation
of pumping fluid, wherein the detected signals are used as the reference to
determine the periodic
switch timing for the fluid flowing direction change operation.
The aforementioned temperature detecting device (11) and gaseous or liquid
fluid composition
detecting device (31) can be constructed as an integral structure or as
separated structures.
Bi-directional fluid pumping device (123) comprises first fluid port (a),
second fluid port (b), third
fluid port (c), and fourth fluid port (d) and are individually installed with
unidirectional fluid pumps
(120a), (120b), (120c), (120d) capable of unidirectional pumping to constitute
the bi-directional
fluid pumping device (123)). The periodic fluid direction-change operative
control device (250)
operatively controls the bi-directional fluid pumping device (123) which is
driven by electric
power source (300) for periodic fluid direction changing operation, and
constantly maintains the
two fluid circuits flowing in different directions.
29

CA 02673107 2016-02-01
The power source (300) provides the operating power source, including AC or DC
city power or
acts as standalone electric power supplying devices. The periodic fluid
direction-change operative
control device (250) comprises by electromechanical components, solid state
electronic
components, or microprocessors with related software and control interfaces to
operatively control
individual unidirectional fluid pumps (120a), (120b), (120c), (120d) that
constitute the bi-
directional fluid pumping device (123), for the periodic fluid direction
changing operation of the
two different direction fluid through the two channels of the heat exchanger
(100), thereby
operatively controlling the temperature distribution status between the fluid
and the heat exchanger
(100) of the heat exchange device (1000).
The heat exchanger (100) has two internal flow channels with heat
absorbing/releasing capability,
wherein the two flow channels are individually set with two fluid ports at
both sides for separately
pumping fluid and has a conventional heat exchange structure for the function
of heat exchanging
between two fluids.
The timing of periodic fluid direction-change can be controlled as: 1) an open-
loop operation with
pre-set periodic fluid direction changing timing; or 2) randomly manual
switching; or 3) installing
both or either one of the at least one temperature detecting device (11) and
the at least one gaseous
or liquid fluid composition detecting device (31) at positions capable of
directly or indirectly
detecting the temperature variation, or gaseous or liquid fluid composition
variation of pumping
fluid, wherein the detected signals are used as the reference to determine the
periodic switch timing
of fluid flowing direction change operation.
As shown in FIG. 17, the structural principal schematic view of FIG. 5 is
additionally installed
with the gaseous or liquid fluid composition detecting device. In this
embodiment, the
conventional bi-directional heat exchange device (1000) is further installed
with the bi-directional
fluid pumping device (123) capable of positive and reverse directional pumping
which has two bi-
directional fluid pumps (140), and is further installed with the periodic
fluid direction-change
operative control device (250) for operatively controlling the bi-directional
fluid pumping device
(123). The bi-directional fluid pumping device (250) allows the two different
flowing direction
fluids to periodically change the flowing directions that is operated with the
two bi-directional

CA 02673107 2016-02-01
fluid pumps (140) of the bi-directional fluid pumping device (123) driven by
power source (300),
and constantly maintains the two fluid circuits in two different flowing
directions inside the heat
exchange device (1000).
At least one of the at least one temperature detecting device (11), the at
least one humidity detecting
device (21) and the at least one gaseous or liquid fluid composition detecting
device (31) can be
installed at positions capable of directly or indirectly detecting the
temperature variation, humidity
variation, or gaseous or liquid fluid composition variation of pumping fluid,
wherein the detected
signals are used as the reference to determine the periodic switch timing of
fluid flowing direction
change operation.
In this instance, the temperature detecting device (11), humidity detecting
device (21), and the
gaseous or liquid fluid composition detecting device (31), or other detecting
devices can be all
constructed as an integral structure, or some of the detecting devices can be
an integral structure,
or each detecting device can be separated structures.
The bi-directional fluid pumping device (123) can have:
1) Two bi-directional pumps (140) capable of producing positive pressure to
push fluid or negative
pressure to attract fluid are used to pump the fluids in opposite directions
to constitute the bi-
directional fluid pumping device (123) for pumping gaseous or liquid state
fluids, wherein the two
fluid pumps in opposite directions can be separately equipped with an electric
motor or share a
common electric motor, thereby being subject to the operative control of the
periodic fluid
direction-change operative control device (250) to positively or reversely
change the flowing
direction of the pumping fluid; and
2) The fluid pumps are capable of simultaneously pumping in opposite
directions individually as
well as periodically changing the pumping directions.
The above pumping methods include 1) producing negative pressure to push the
fluid; or 2)
producing positive pressure to attract the fluid.
31

CA 02673107 2016-02-01
Said bi-directional fluid pumping device (123) and said heat exchange device
(1000) can be
constructed as an integral structure or as separate structures.
Power source (300) provides the operating power source, including AC or DC
city power or acts
as standalone electric power supplying devices. The periodic fluid direction-
change operative
control device (250) comprises electromechanical components, solid state
electronic components,
or microprocessors with related software and control interfaces to operatively
control the two bi-
directional fluid pumps (140) inside the bi-directional fluid pumping device
(123) for periodically
changing the flowing direction of the two fluids in different flowing
directions passing through the
heat exchange device (1000), thereby operatively controlling 1) the
temperature distribution status;
or 2) the humidity distribution status; or 3) both of the temperature and
humidity distribution
between the fluid and the total heat exchanger (200) of the heat exchange
device (1000).
Total heat exchanger (200) has two internal flow channels with heat
absorbing/releasing and
humidity absorbing/releasing capability, wherein the two flow channels are
individually set with
two fluid ports at both sides for separately pumping fluid and has a
conventional total heat
exchange structure for the function of heat exchanging between two fluids and
function of de-
humid capability.
The timing of periodic direction change of flowing fluid can be controlled as:
1) as open-loop
operation with pre-set periodic fluid direction changing timing; or 2)
randomly manual switching;
or 3) installing all or at least one of the at least one temperature detecting
device (11), the at least
one humidity detecting device (21) and the at least one gaseous or liquid
fluid composition
detecting device (31) at positions capable of directly or indirectly detecting
the temperature
variation, humidity variation, or gaseous or liquid fluid composition
variation of pumping fluid,
wherein the detected signals are used as the reference to determine the
periodic switch timing of
fluid flowing direction change operation.
As shown in FIG. 18, the structural principal schematic view of FIG. 6 is
additionally installed
with the gaseous or liquid fluid composition detecting device. As shown in
FIG. 18, the first fluid
port (a), second fluid port (b), third fluid port (c), and fourth fluid port
(d) in the heat exchange
32

CA 02673107 2016-02-01
device (1000) are respectively installed with hi-directional fluid pumps
(111), (112), (113), (114)
capable of producing negative pressure or positive pressure to constitute the
hi-directional fluid
pumping device (123). The bi-directional fluid pumps (111), (112), (113),
(114) are capable of
producing negative pressure or positive pressure in the bi-directional fluid
pumping device (123)
which are driven by electric power source (300) by the periodic fluid
direction-change operative
control device (250) to periodically change the flowing direction of the
pumping fluid and
constantly maintain the two fluid circuits flowing in different directions.
The heat exchange device (1000) and the bi-directional fluid pumps (111),
(112), (113), (114) can
be integrated as one device or separately installed to constitute the function
of hi-directional fluid
pumping device (123), wherein the four hi-directional fluid pumps (111),
(112), (113), (114)
capable of producing negative pressure or positive pressure are separately
installed at first fluid
port (a), second fluid port (b), third fluid port (c) and fourth fluid port
(d) for generating the
pumping to change the fluids flowing in different directions. The
aforementioned hi-directional
fluid pumps (111), (112), (113), (114) are controlled by the periodic fluid
direction-change
operative control device (250), where the fluid pumps (111) and (113)
installed at first fluid port
(a) and third fluid port (c) to form one set of pumps, which could be driven
by individually installed
electric motors, or jointly driven by single electric motor, while the fluid
pumps (112) and (114)
form another set of pumps, which could be driven by individually installed
electric motors, or
jointly driven by single electric motor, under the control of periodic fluid
direction-change
operative control device (250) to provide one or more of the following
operating functions,
including: 1) partial control of the hi-directional fluid pumps to alternately
pump periodically in
negative pressure to allow the two fluid circuits in different flowing
directions to change the
respective flowing directions; or 2) partial control of the hi-directional
fluid pumps to alternately
pump in positive pressure to periodically allow the two fluid circuits flowing
in different flowing
directions to change flowing directions; 3) partial or all of the hi-
directional fluid pumps form
auxiliary pumping by the positive pressure pumping and negative pressure
pumping generated by
different fluid pumps in the same fluid circuits, thereby allowing two fluid
circuits in different
flowing directions to periodically change flowing directions. In the
aforementioned functions, the
flowing direction of the fluid inside the two channels at both sides of the
total heat exchanger (200)
in the heat exchange device (1000) maintains opposite flowing directions.
33

CA 02673107 2016-02-01
At least one of the at least one temperature detecting device (11), the at
least one humidity detecting
device (21) and the at least one gaseous or liquid fluid composition detecting
device (31) can be
installed at positions capable of directly or indirectly detecting the
temperature variation, humidity
variation, or gaseous or liquid fluid composition variation of pumping fluid,
wherein the detected
signals are used as the reference to determine the periodic switch timing of
fluid flowing direction
change operation.
For the aforementioned temperature detecting device (11), humidity detecting
device (21), and the
gaseous or liquid fluid composition detecting device (31), all detecting
devices can be constructed
as an integral structure, or some detecting devices as an integral structure,
or each detecting device
are separate structures.
Bi-directional fluid pumping device (123) comprises first fluid port (a),
second fluid port (b), third
fluid port (c), and fourth fluid port (d) and are individually installed with
bi-directional fluid pumps
(111), (112), (113), (114) capable of producing positive pressures or negative
pressure, thereby to
constitute the bi-directional fluid pumping device (123). The periodic fluid
direction-change
operative control device (250) operatively controls the bi-directional fluid
pumping device (123)
which is driven by electric power source (300) for periodic fluid direction
changing operation, and
constantly maintains the two fluid circuits flowing in different direction.
The power source (300)
provides the operating power source, including AC or DC city power or acts as
standalone electric
power supplying devices.
The periodic fluid direction-change operative control device (250) comprises
electromechanical
components, solid state electronic components, or microprocessors with related
software and
control interfaces to operatively control the bi-directional fluid pumps
(111), (112), (113), (114)
capable of producing negative pressure or positive pressure to constitute the
bi-directional fluid
pumping device (123), for the periodic fluid direction changing operation of
the two different
direction fluid through the two channels of the heat exchanging device to
control 1) the temperature
distribution status; or 2) the humidity distribution status; or 3) both of the
temperature and humidity
distribution between the fluid and the total heat exchanger (200) of the heat
exchange device.
34

CA 02673107 2016-02-01
Total heat exchanger (200) has two internal flow channels with heat
absorbing/releasing and
humidity absorbing/releasing capability, wherein the two flow channels are
individually set with
two fluid ports at both sides for separately pumping fluid and has a
conventional total heat
exchange structure for the function of heat exchanging between two fluids and
function of de-
humid capability.
The timing of periodic direction change of flowing fluid can be controlled as:
1) an open-loop
operation with pre-set periodic fluid direction changing timing; or 2)
randomly manual switching;
or 3) installing all or at least one of the at least one temperature detecting
device (11), the at least
one humidity detecting device (21) and the at least one gaseous or liquid
fluid composition
detecting device (31) at positions capable of directly or indirectly detecting
the temperature
variation, humidity variation, or gaseous or liquid fluid composition
variation of pumping fluid,
wherein the detected signals are used as the reference to determine the
periodic switch timing of
fluid flowing direction change operation.
As shown in FIG. 19, the structural principal schematic view of FIG. 7 is
additionally installed
with the gaseous or liquid fluid composition detecting device. As shown in
FIG. 19, the first fluid
port (a), second fluid port (b), third fluid port (c), and fourth fluid port
(d) of the two flow channels
of the two bi-directional fluids of heat exchanging device (1000) are
separately install with the
unidirectional fluid pump (120a), (120b), (120c), (120d) for unidirectional
pumping to constitute
the bi-directional fluid pumping device (123). The electrical power from the
electrical power
source (300) is controlled by the periodic fluid direction-change operative
control device (250) to
control the unidirectional pumps (120a), (120b), (120c), (120d) of the bi-
directional fluid pumping
device (123) to periodically change the flowing direction of the pumping
fluid, and to constantly
maintain the fluid flowing directions of both circuits in different direction.
In this embodiment, the heat exchanging device (1000) and unidirectional fluid
pumps (120a),
(120b), (120c), (120d) can be integrated as one device or separately installed
to constitute the
function of bi-directional fluid pumping device (123), wherein the four
unidirectional fluid pumps
(120a), (120b), (120c), (120d) are separately installed at fluid port first
fluid port (a), second fluid

CA 02673107 2016-02-01
port (b), third fluid port (c) and fourth fluid port (d) for fluid pumping.
The aforementioned
unidirectional fluid pumps (120a), (120b), (120c), (120d) are controlled by
the periodic fluid
direction-change operative control device (250). The unidirectional fluid
pumps (120a) and (120c)
installed at the first fluid port (a) and the third fluid port (c) to form one
set of pumps, which could
be driven by individually installed electric motors, or jointly driven by
single electric motor, while
the unidirectional fluid pumps (120b) and (120c) form another set of pumps,
which could be driven
by individually installed electric motors, or jointly driven by single
electric motor. Under the
control of periodic fluid direction-change operative control device (250) one
or multiple of the
following functions and structures can be provided to change the flowing
direction, including:
1) The arrangement of unidirectional pumps for negative pressure pumping on
fluids, wherein the
unidirectional fluid pump (120a) and unidirectional fluid pump (120c) form one
set, and the
unidirectional fluid pump (120b) and unidirectional fluid pump (120d) form the
other set, and that
the two sets provide periodic negative pressure pumping alternately to make
the fluids with
different flowing direction in two channels changing their flowing direction
periodically; or
2) The arrangement of unidirectional pumps for positive pressure pumping on
fluids, wherein the
unidirectional fluid pump (120a) and unidirectional fluid pump (120c) form one
set, and the
unidirectional fluid pump (120b) and unidirectional fluid pump (120d) form the
other set, and that
the two sets alternately provide periodic positive pressure pumping to make
the fluids with
different flowing direction in two channels changing their flowing direction
periodically.
In the aforementioned functions, the flowing direction of the fluid inside the
two channels at both
sides of total heat exchanger (200) in the heat exchange device (1000)
maintains opposite flowing
directions.
At least one of the at least one temperature detecting device (11), the at
least one humidity detecting
device (21) and the at least one gaseous or liquid fluid composition detecting
device (31) can be
installed at positions capable of directly or indirectly detecting the
temperature variation, humidity
variation, or gaseous or liquid fluid composition variation of pumping fluid,
wherein the detected
signals are used as the reference to determine the periodic switch timing of
fluid flowing direction
change operation.
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CA 02673107 2016-02-01
For the aforementioned temperature detecting device (11), humidity detecting
device (21), and the
gaseous or liquid fluid composition detecting device (31), all detecting
devices can be constructed
as an integral structure, or some detecting devices as an integral structure,
or each detecting device
are separate structures.
Bi-directional fluid pumping device (123) comprises first fluid port (a),
second fluid port (b), third
fluid port (c), and fourth fluid port (d) and are individually installed with
unidirectional fluid pumps
(120a), (120b), (120c), (120d) capable of unidirectional pumping to constitute
the hi-directional
fluid pumping device (123). The periodic fluid direction-change operative
control device (250)
operatively controls the hi-directional fluid pumping device (123) which is
driven by electric
power source (300) for periodic fluid direction changing operation, and
constantly maintains the
two fluid circuits flowing in different directions.
The power source (300) provides the operating power source, including AC or DC
city power or
acts as standalone electric power supplying devices.
The periodic fluid direction-change operative control device (250) comprises
electromechanical
components, solid state electronic components, or microprocessors with related
software and
control interfaces to operatively control individual unidirectional fluid
pumps (120a), (120b),
(120c), (120d) that constitute the bi-directional fluid pumping device (123),
for the periodic fluid
direction changing operation of the two different direction fluid through the
two channels of the
heat exchange device to control 1) the temperature distribution status; or 2)
the humidity
distribution status; or 3) both of the temperature and humidity distribution
between the fluid and
the total heat exchanger (200) of the heat exchange device.
Total heat exchanger (200) has two internal flow channels with heat
absorbing/releasing and
humidity absorbing/releasing capability, wherein the two flow channels are
individually set with
two fluid ports at both sides for separately pumping fluid and has a
conventional total heat
exchange structure for the function of heat exchanging between two fluids and
function of de-
humid capability.
37

CA 02673107 2016-02-01
The timing of periodic direction change of flowing fluid can be controlled as:
1) an open-loop
operation with pre-set periodic fluid direction changing timing; or 2)
randomly manual switching;
or 3) installing all or at least one of the at least one temperature detecting
device (11), the at least
one humidity detecting device (21) and the at least one gaseous or liquid
fluid composition
detecting device (31) at positions capable of directly or indirectly detecting
the temperature
variation, humidity variation, or gaseous or liquid fluid composition
variation of pumping fluid,
wherein the detected signals are used as the reference to determine the
periodic switch timing of
fluid flowing direction change operation.
According to the above operating functions, the selectable embodiments of the
bi-directional fluid
pumping devices (123) of the double flow-circuit heat exchange device for
periodic positive and
reverse directional pumping of the present invention includes one or more of
the following
structures, including:
1. Having at least two fluid pumps (140) capable of bi-directionally fluid
pumping installed on the
common fluid port of two different fluid channels to operatively control the
bi-directional fluid
pump to periodically pump in positive or reverse directions, thereby
periodically changing the
fluid direction. As shown in FIG. 20, at least two fluid pumps capable of bi-
directionally fluid
pumping are installed between the fluid source and both ends of the common
inlet/outlet port of
the first fluid circuit and the second fluid circuit.
2. Having at least four bi-directional fluid pumps (111,112,113,114) capable
of producing negative
pressure or positive pressure, wherein two bi-directional fluid pumps
(111,112) are installed at the
fluid ports (a), (b) on the two ends of the first fluid circuit of the heat
exchange device (1000),
while the other two bi-directional fluid pumps (113,114) are installed at the
fluid ports (c), (d) on
the two ends of the second fluid circuit. The periodic fluid direction-change
operative control
device (250) controls the operation of the at least four bi-directional fluid
pumps and provides one
or multiple following functions, including: 1) when the bi-directional fluid
pumps (111,113) are
installed at one end of the first fluid circuit and the second fluid circuit
to operate in negative
pressure pumping, and bi-directional fluid pumps (112,114) are installed at
the other end of the
first fluid circuit and second fluid circuit the pumps are alternately
operated in a negative pressure
38

CA 02673107 2016-02-01
pumping operation to provide the periodic change in the flowing direction of
the fluid; or 2) when
the bi-directional fluid pumps (111, 113) are installed at one end of the
first fluid circuit and the
second fluid circuit to operate in positive pressure pumping, and bi-
directional fluid pumps
(112,114) are installed at the other end of the first fluid circuit and second
fluid circuit the pumps
are alternately operated in a positive pressure pumping operation to provide
the periodic change
in the flowing direction of the fluid; or 3) when the positive fluid pump and
negative fluid pump
at the two ends of the same fluid channel of the two fluid channels to assist
the pump in the same
direction and to alternately change the flowing direction. As shown in FIG.
21, at least four bi-
directional fluid pumps are installed, wherein two of the bi-directional fluid
pumps are installed at
the fluid ports (a), (b) of two ends of the first fluid circuit of the heat
exchange device, while the
other two of the bi-directional fluid pumps are installed at the fluid ports
(c), (d) of two ends of the
second fluid circuit.
3. Having at least four unidirectional fluid pumps (120a), (120b), (120c),
(120d), wherein two
unidirectional fluid pumps (120a), (120b) are separately installed at fluid
ports (a), (b) on the two
ends of the first fluid circuit of the heat exchange device (1000), while the
other two unidirectional
fluid pumps (120c), (120d) are separately installed at fluid ports (c), (d) on
the two ends of the
second fluid circuit, whereby the at least four unidirectional fluid pumps are
controlled by the
periodic fluid direction-change operative control device (250) to provide one
or multiple of the
following operating functions, including: 1) the arrangement of the
unidirectional pumps for
negative pressure pumping on fluids, wherein the unidirectional pump (120a)
and unidirectional
pump (120c) form one set, and the unidirectional pump (120b) and
unidirectional pump (120d)
form the other set, so that the two sets alternately provide periodic negative
pressure pumping to
make the fluids with different flowing direction in two channels change their
flowing direction
periodically; or 2) the arrangement of unidirectional pumps for positive
pressure pumping on
fluids, wherein the unidirectional pump (120a) and unidirectional pump (120c)
form one set, and
the unidirectional pump (120b) and unidirectional pump (120d) form the other
set, so that the two
sets alternately provide periodic positive pressure pumping to change the
flowing direction of the
fluids in the two channels periodically. As shown in FIG. 22, at least four
unidirectional fluid
pumps are installed, wherein two of the unidirectional fluid pumps are
installed at the fluid ports
(a), (b) of two ends of the first fluid circuit of the heat exchange device,
while the other two of the
39

CA 02673107 2016-02-01
bi-directional fluid pumps are installed at the fluid ports (c), (d) of two
ends of the second fluid
circuit.
The aforementioned fluid pumping devices are provided for pumping gaseous or
liquid fluids,
wherein the fluid pumps can be driven by a standalone electric motor or at
least two fluid pumps
can jointly be driven by a single electric motor, the fluid pumps can be
driven by engine power, or
the mechanical or electric power generated or converted from other wind
energy, thermal energy,
temperature difference energy or solar energy.
Said periodic fluid direction-change operative control device (250) of the
double flow-circuit heat
exchange device for periodic positive and reverse directional pumping of the
present invention is
equipped with an electric motor, or controllable engine power, or mechanical
or electric power
generated or converted from other wind energy, thermal energy, temperature-
difference energy, or
solar energy for controlling various fluid pumps for driven, or controlling
the operation timing of
the fluid pumps or fluid valves, thereby changing the direction of the two
circuits passing through
the heat exchanger (100) and further to operatively control partial or all
regulations of rotational
speed, flow rate, fluid pressure of various fluid pumps thereof.
For the aforementioned double flow-circuit heat exchange device for periodic
positive and reverse
directional pumping, the periodic fluid direction-change operative control
device (250) can
manipulate the flow rate of the fluid pumped by the bi-directional pumping
device (123), wherein
the operational modes include one or more of the following modes:
1) the flow rate of pumping fluid is adjusted or set manually;
2) the flow rate of fluid is operatively controlled by referring to the
detected signal of the at least
one temperature detecting device;
3) the flow rate of fluid is operatively controlled by referring to the
detected signal of the at least
one moisture detecting device;
4) the flow rate of fluid is operatively controlled by referring to the
detected signal of the at least
one gaseous or liquid fluid composition detecting device;

CA 02673107 2016-02-01
5) the flow rate of the fluid is jointly operatively controlled by two or more
than two said 1)-4)
items.
The double flow-circuit heat exchange device for periodic positive and reverse
directional
pumping when installed with the function of operatively controlling the flow
rate, the flow rate
range of the controlled fluid is between stop delivery to the maximum
delivering volume, and the
flow rate of fluid is manipulated in a stepped or stepless control according
to the operational
requirements. The flow rate of fluid can also be changed by:
1) operatively controlling the rotational speed during the pumping operation
of the bi-directional
pumping device (123) from idling to the maximum speed range, thereby to
further operatively
control the flow rate of fluid;
2) configuring the hi-directional pumping device (123) with controllable fluid
valve inlet/outlet to
operatively control the open volume of the fluid valve inlet/outlet of the hi-
directional pumping
device (123), thereby to further operatively control the flow rate of fluid;
3) configuring the unidirectional valve (126) with controllable fluid valve
inlet/outlet to
operatively control the open volume of the fluid valve inlet/outlet of the
unidirectional valve (126),
thereby to further operatively control the flow rate of fluid;
4) configuring the fluid valve (129) and fluid valve (129') with controllable
fluid valve inlet/outlet
to operatively control the open volume of the fluid valve inlet/outlet of the
fluid valve (129) and
fluid valve (129'), thereby to further operatively control the flow rate of
fluid;
5) operatively controlling at least one of the devices in item 1)-4) to
intermittingly pump fluid,
thereby to modulate the average flow rate by the time ratio of pumping and
stop pumping.
For the aforementioned double flow-circuit heat exchange device for periodic
positive and reverse
directional pumping of the present invention, the flow rate ratio of the two
flow circuits passing
through the heat exchange device (1000) during the operation can be one or
more of the following
ratio modes:
1) In the operation of periodically positive and reverse directional pumping
fluid, the flow rate of
one flow circuit is greater than that of the other flow circuit;
41

CA 02673107 2016-02-01
2) In the operation of periodically positive and reverse directional pumping
fluid, the flow rate of
the two flow circuits are the same;
3) In the operation of periodically positive and reverse directional pumping
fluid, when operation
in one direction, the flow rate of the two flow circuits are different, while
operation in the other
direction, the flow rate of the two flow circuits are the same.
For the aforementioned double flow-circuit heat exchange device for periodic
positive and reverse
directional pumping of the present invention, in the operation of periodically
positive and reverse
directional pumping fluid, the pumping periodic mode includes one or more of
the following:
1) In the operation of periodically positive and reverse directional pumping
fluid, the operational
time of positive direction and reverse direction are the same;
2) In the operation of periodically positive and reverse directional pumping
fluid, the operational
time of positive direction and reverse direction are different;
3) The mixed mode of both item 1) and 2).
For the aforementioned double flow-circuit heat exchange device for periodic
positive and reverse
directional pumping of the present invention, except for the function of
periodically positive and
reverse directional pumping operation, it further simultaneously has one or
more of the following
special operational modes:
1) The fluid of two flow circuits pump in fluid in the same flowing direction;
2) The fluid of two flow circuits reversely pump out fluid in the same flowing
direction;
3) The fluid of two flow circuits execute periodically positive and reverse
directional pumping
operation by pumping in fluid and reversely pumping out fluid in the same
flowing direction.
The function of the same directional pumping of the aforementioned two flow
circuits can be
applied to emergently increase the flow rate of fluid pumping in or pumping
out.
For the double flow-circuit heat exchange device for periodic positive and
reverse directional
pumping, during the operation of the flow direction change, to mitigate the
impact generated by
the gaseous or liquid state fluid in the course of reversing the pumping
direction, including the
liquid hammer effect generated when the pumping liquid state fluid is
reversed, one or more of the
42

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following operational methods can be further added to the operational modes of
the flow direction
change control:
1) In the operation of fluid flow direction change, it is through the
operatively control of the fluid
pump or fluid valve to slowly reduce the flow rate of fluid, then to be
switched to slowly increase
the flow rate of fluid to a maximum preset value in the other flow direction;
2) In the operation of fluid flow direction change, it is through the
operatively control of the fluid
pump or fluid valve to slowly reduce the flow rate of fluid, and to be
switched to stop pumping for
a preset time period, then further to be switched to slowly increase the flow
rate of fluid to a
maximum preset value in the other flow direction.
43

Representative Drawing