Note: Descriptions are shown in the official language in which they were submitted.
l 1600~
The present invention relates to a heating system compris-
- ing a compressor for feeding a heated medium, preferably a
heated gas, for example Freon gas, to -two pipe coils each
adapted to heat one fluid by means of the medium, the fluid
flowing through the coils and being returned from the coils
to the compressor.
In such a system it is known to utilize the earth's heat
or the heat of water in deep wells. Thereby the heating sys-
tem is used for heating the water of a water heater and forheating the water o~ radiators.
A heating system is known in which the earth's heat is
utilized and the heating medium consists of Freon (a trademark)
gas. A drawback of this system is that the hot gas has to flow
through a water heater before it can be conducted to a heat
exchanger for heating the radiator water. This causes the
temperature of the gas to be substantially reduced before the
gas reaches the heat exchanger for heating the radiator water,
if very much water is drained from the water heater.
The present invention provides an improved such heating
system.
According to the present invention therefore there is
provided a heating system for heating first and second fluids,
comprising: compressor means for heating a heat exchange
medium, to a gas; means for supplying the medium from said
compressor means to first and second, parallel pipe coils;
valve means for controlling amounts of said medium supplied
to said first and second pipe coils; a tank for storing said
first fluid to be heated; said first pipe coil in said tank
being submerged in said fi-rst fluid; said second pipe coil
external to and in thermal contact with said tank; means for
supplying said second fluid into thermal contact with said
second pipe coil; evaporator means external to and in proximity
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with said second pipe coil; means for supplying the medium,
condensed in said first and second pipe coils, to said evapor-
ator means for evaporation; and means for returning the evap-
orated medium to said compressor.
Thus, according to the present invention in the heating
system the pipe coils are connected in parallel to the com-
pressor and the system comprises a device for controlling the
relationship between the flow of the medium through one of
said coils and the flow of the medium through the other of
said coils.
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~ s described above it is pre~erred that the
heating system is designed so th~t one of the pipe coils
extends through a w-ate~ fieatex and that the other pipe
coil extends through a heat exchanger for heating water of
radiators.
Prefera~ly the control device is connected by
a sensor wfiich is adapted to measure the temperature of
the fluids heated by means of the medium, said fluids being
constituted by the fiot water of the water heater and the
hot water for radiators.
Thereby it is suitable that the control device
automatically distributes the hot gas between the pipe
coils with regard to the condensation effect in the pipe
coils and the capacity demand so that the gas supply to
the pipe coils ls conducted in such a way that th~ gas is
completely condensed in the pipe coils.
An embodiment of the invention is described in
the following with reference to the accompanying drawings,
in which:
Fig. 1 is a schematical view of a heating system
according to the invention; and
Fig. 2 shows a detail of the system according to
F~g. 1 on the enlarged scale.
A compressor 1 feeds hot Freon (a trademark) gas
throu~h a pressure conduit 9 to a control valve 5. From
the control valve 5 a portion of the gas is directed into
a pipe coil 8 positioned ~n a water heater 4. The gas is
condensed ~n the pipe coil by the fact that the gas is
cooled by the water of the ~ater heater and leaves the
lower end 11 of the` pipe coil in a condensed state. The
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condensed ~a~ is fed to a ~eceiver 7 through a distribu-
tor y~lye 10. Another portion o$ the hot Freon gas is di-
rected ~rom the control valYe 5 to a pipe coil 3 which is
positioned in a jacket shaped heat exchanger 15 outside the
water heater 4. Water which shall be heated by the Freon
Ca trademark) gas in order to heat radiators flows through
the heat exchanger 15, and the Freon gas is cooled by this
water to a condensed state. The condensed Freon gas is
directed from the lower end of the pipe coil to the receiver
7 through t~e distributor valve 10.
From the receiver 7 there is fed condensed,
liquid state Freon (a trademark), through an expansion
valve 6 to a pipe coil in an evaporator 2 which as a jacket
is positioned outside the jacket shaped heat exchanger 15.
An insulating materialis positioned between the heat
exchanger 15 and the evaporator 2. The liquid state Freon
(a trademark) will ~e evaporated in the evaporator 2 partly
because of the fact that it is subjected to a pressure
reduction when passing the expansion valve 6 and partly
by being heated in the evaporator 2 by the water circulating
around the pipe coil in the evaporator. The water is sup-
plied to the upper end of the evaporator, as ~hown by me~ns
of the arrow 12 in FigO 1, and escapes from the lower end
of the evaporator, as shown by means of the arrow 13 in
Fig. 1. The water passing through the evaporator can be
const~tuted by water which is heated by means of the earth
heat or by means of the water of a deep well.
The water to the radiators is supplied to the
jacket shaped heat exchanger 15 through a pipe 14 and es-
capes from the heat exchangex 15 through a pip~ 16 at the
upper port~on of the heat exchanger.
A sensor (see Figure 2) extends into the upper
end of the heat exchangex 15 and into the upper end of the
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water heater 4 in o~der to sense the temperature of the
radia,to~ wajter a,s well a~ the hot water in the water
heater, T~e valYe 5 is controlled by the sensor in order
to cont~ol the amount of hot Fxeon (a trademarkl gas flowin~
to the pi~pe coil 8 in the water heater 4 and to the pipe
co~l 3 in the heat exchanger 15. Thereby, -the temperature
of the hot water of the water heater and the hot water
for the radiators ~s controlled. The sensor 17 is connected
also w~th the compressor 1 and with a regulator 18 for
controlling the feeding of water~to the evaporator 2.
Thus, the compressor 1 and the regulator 18 functions in
dependence of the temperature of the hot water of the water
heater and the hot water for the radiators, respectively.
In a system according to the invention it is pos-
sihle to provide the consumption water with a temperature
of 58-65C and the radiator water with a temperature of
50-56~C. By means of the described distribution of the
gas supply to the hot water heater and the heat exchanger
for the radiators there is provided a more rapid heating
of the consumption water.
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