Note: Descriptions are shown in the official language in which they were submitted.
CA 02987567 2017-11-28
[DESCRIPTION]
[Invention Title]
COMBUSTOR
[Technical Field]
The present disclosure relates to a combustor, and more
particularly, to a combustor recovering combustion heat
generated by burning solid fuel in a combustion chamber to use
recovered heat as energy.
[Background Art]
Generally, in industrial facilities requiring industrial
hot water, steam, or high temperature gas, combustors
generating heat energy by igniting and burning fuel in
combustion chambers are utilized to obtain thermal energy. As
fuel used in such combustors, solid fuel, obtained from domestic
waste, and the like, has widely been used in view of economy
and recycling resources.
In the course of burning solid fuel in such combustors,
clinker, generated by the combustion, is collected in clinker
collection portions communicating with lower side portions of
combustion chambers to be removed from the combustion chambers.
However, clinker is collected in clinker collection
portions in flowing combustion air. In this case, since
combustion air may not smoothly flow out from a combustion space
into the clinker collection portions, efficiency of clinker
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removal from the combustion space may be deteriorated.
[Disclosure]
[Technical Problem]
An aspect of the present disclosure is to provide a
combustor, in which removal efficiency of clinker may be
increased by smoothly discharging combustion air from a
combustion space to a clinker collection portion.
(Technical Solution]
According to an aspect of the present disclosure, a
combustor includes a combustion chamber including a grate
therein and a combustion space formed above the grate; a fuel
supply portion downwardly connected to a central portion of the
grate to supply fuel to an upper portion of the grate; an air
supply part connected to a side portion of the combustion
chamber to be inclined with respect to a horizontal plane, to
supply combustion air such that the combustion air rotates in
the combustion space; a clinker collection portion downwardly
communicating with a gap formed between an inner wall of the
combustion chamber and the grate, to collect clinker generated
by combustion of fuel performed in the combustion space, in the
clinker collection portion through the gap; and a
reintroduction channel passing through the grate from the
clinker collection portion to the combustion space, such that
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the combustion air, having flowed from the combustion space to
the clinker collection portion through the gap, is reintroduced
into the combustion space.
The reintroduction channel may be provided as a plurality
of reintroduction channels, and may have across-sectional area
decreasing toward a central portion of the combustion chamber
in a lower portion of the combustion chamber.
The reintroduction channel may be provided as a plurality
of reintroduction channels, and the number of the plurality of
reintroduction channels may be reduced toward a central portion
of the combustion chamber in a lower portion of the combustion
chamber.
The combustor may further include a flow controlling
member controlling a flow structure of the combustion air in
the clinker collection portion, to restrict the clinker in the
clinker collection portion from being reintroduced into the
combustion space together with the combustion air.
In this case, the flow controlling member may be
configured to extend downwardly from a lower portion of the
combustion chamber to an inside of the clinker collection
portion.
In this case, the flow controlling member may extend
downwardly, toward a center of the combustion chamber.
The combustor may further include a partition wall
configured to be able to separate an air supply passage and a
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clinker collection passage from each other in the gap, in such
a manner that the clinker is collected in the clinker collection
portion through the gap when the combustion air provided by the
air supply part is supplied into the combustion chamber through
the gap.
The combustor may further include a check member provided
inside the clinker collection portion and configured to have
a through hole having a downwardly-narrowed shape to block
upwardly reverse passage of the clinker having passed
downwardly.
The clinker collection portion may accommodate water in
a lower portion thereof, such that the clinker is deposited in
the water.
The air supply part may be configured to be connected to
an outer wall of the combustion chamber, spaced apart from the
inner wall while surrounding the inner wall, in such a manner
that the combustion air rotates along an external surface of
the inner wall of the combustion chamber, and then, is
introduced into the combustion space through an inlet.
The air supply part may include an upper air supply portion
connected to an upper side portion of the combustion chamber
to supply the combustion air in such a manner that the combustion
air rotates downwardly in the combustion space; and a lower air
supply portion connected to a lower side portion of the
combustion chamber to supply combustion air in such a manner
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that the combustion air is in contact with the fuel on an upper
portion of the grate to be burned and then rises along a central
portion of the combustion chamber.
The combustor may further include a guide member having
a downwardly-opening structure and disposed to protrude from
an inlet, through which the combustion air is introduced into
the combustion space, inwardly of the combustion space, to guide
the combustion air in such a manner that the combustion air
rotates downwardly in the combustion space along the inner wall
of the combustion chamber.
The grate may be rotationally driven, based on the fuel
supply portion.
The fuel supply portion may pass through the grate to
protrude into the combustion space, and may be configured to
have a screw form to continuously supply the fuel.
The fuel supply portion may pass through the grate to
protrude into the combustion space, and may be provided with
a blocking member, having a downwardly enlarged diameter and
mounted on an end portion of the fuel supply portion, adjacent
to the combustion space, to distribute the fuel laterally while
blocking an upward movement of the fuel.
The combustion chamber may have a frustoconical shape,
in which an upper portion is relatively narrow and a lower
portion is relatively wide.
[Advantageous Effects]
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In the case of a combustor according to an aspect of the
present disclosure, a reintroduction channel may be configured
to pass through a grate from a clinker collection portion to
a combustion space, such that combustion air discharged from
the combustion space to the clinker collection portion through
a gap may be reintroduced into the combustion space. Thus, as
the combustion air may be smoothly discharged to the clinker
collection portion from the combustion space, the efficiency
of removing clinker from a combustion space may be increased.
[Description of Drawings]
FIG. 1 is a view illustrating an interior of a combustor
according to an exemplary embodiment in the present disclosure.
FIG. 2 is a view illustrating an interior of a combustor
according to another exemplary embodiment in the present
disclosure.
FIG. 3 is a plan view of a lower grate in the combustors
of FIGS. 1 and 2.
FIG. 4 is a view illustrating another embodiment of the
grate illustrated in FIG. 3.
FIG. 5 is a view illustrating another embodiment of the
grate illustrated in FIG. 3.
(a) of FIG. 6 is a view illustrating a structure in which
combustion air flows in a case in which a flow controlling member
is not provided in a clinker collection portion in the
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combustors of FIGS. 1 and 2, and (b) of FIG. 6 is a view
illustrating a structure in which combustion air flows when a
flow controlling member is installed in a clinker collection
portion in the combustors of FIGS. 1 and 2.
FIG. 7 is a view illustrating a check member installed
in a clinker collection portion in the combustors of FIGS. 1
and 2.
[Best Model
Hereinafter, embodiments of the present disclosure will
be described with reference to the accompanying drawings. In
adding reference numerals to constituent elements of respective
drawings, the same constituent elements are denoted by the same
reference numerals even in the case in which they are shown in
different drawings. In the following description of the
present disclosure, a detailed description of functions and
configurations below, known in the art, will be omitted in a
case in which a subject matter of the invention is rather
unclear.
FIG. 1 is a view illustrating an interior of a combustor
according to an exemplary embodiment, and FIG. 2 is a view
illustrating an interior of a combustor according to another
exemplary embodiment.
Referring to the drawings, a combustor according to an
exemplary embodiment may include a combustion chamber 100 in
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which a fuel F, for example, a solid-type fuel, is burned, a
fuel supply portion 200 supplying the fuel F to the combustion
chamber 100, and an air supply part supplying combustion air
A to the combustion chamber 100, and as main constituent
characteristics, may include a clinker collection portion 520
in which clinker generated by combustion of the fuel F in the
combustion space 100a is collected, and a reintroduction
channel 530 passing through a grate 130 from the clinker
collection portion 520 to the combustion space 100a. For
example, the clinker may include ash as a remaining material
after the fuel is burned.
In this case, the combustion space 100a may be formed in
the combustion chamber 100, the grate 130 may be installed in
a lower portion of the combustion space 100a, and an outlet 100c
may be formed in an upper portion thereof. In this case, the
grate 130 may be configured to have the fuel F seated thereon
and configured to be provided with the fuel supply portion 200
downwardly connected to a central portion of the grate.
For example, the combustion chamber 100 may have a
frustoconical shape, in which an upper portion is relatively
narrow and a lower portion is relatively wide, which may be
selected as a stable structure including a downward-rotating
flow of the combustion air A supplied to the combustion chamber
100 to be described below, in terms of resistance thereof. In
addition, this stable structure may be an efficient structure
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in which an unnecessary inner corner space in an angled section
is removed in terms of a gas flow path.
The grate 130 may be rotatably driven around the fuel
supply portion 200. As an example, the grate 130 may be directly
connected to a driving member to be rotationally driven. As
another example, the grate 130 may be installed on an upper
surface of a turntable 140 (see FIG. 2) , and when a driving member
rotates the turntable 140, the grate may rotate in conjunction
therewith. In this case, the direct connection structure of
the driving member to the grate and the connection structure
through the turntable 140 may also be replaced by any structures
of the related art, of course.
In addition, the fuel supply portion 200 may be downwardly
connected to a central portion of the grate 130 to have a
structure of supplying the fuel F to an upper portion of the
grate 130. As an example, the fuel supply portion 200 may pass
through the grate 130 to protrude into the combustion space 100a,
and may be configured to have a screw form such that the fuel
F may be continuously supplied by a screw 210.
In addition, a blocking member 220 having a downwardly
enlarged diameter may be mounted on an end portion of the fuel
supply portion 200 adjacent to the combustion space 110a, to
distribute the fuel F laterally while blocking an upward
movement of the fuel F.
On the other hand, the air supply part may be connected
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to aside of the combustion chamber 100 to supply the combustion
air A into the combustion chamber 100, and in detail, may be
configured to include an upper air supply portion 310 and a lower
air supply portion 320. The upper air supply portion 310 and
the lower air supply portion 320 may be determined by a relative
positional difference therebetween, and specific connection
positions thereof connected to the side of the combustion
chamber 100 are not particularly limited.
In this case, the upper air supply portion 310 and the
lower air supply portion 320 may be configured to be able to
have a structure in which the combustion air A may be supplied
to rotate along an inner wall 110 of the combustion chamber 100.
As an example, as illustrated in FIG. 3, the upper air supply
portion 310 may be connected to a side of the combustion chamber
100, to be inclined on a horizontal plane. As the combustion
air A supplied through the upper air supply portion 310 may
descend while rotating along the inner wall 110 of the
combustion chamber 100, in the combustion space 100a, the
combustion air A may be preheated before reaching the fuel F
on the grate 130. Thus, combustion e fficiency may be increased.
The inner wall 110 may be blocked from a high-temperature
distribution portion extending in an upward direction from a
central portion of the combustion chamber 100 toward the outlet
100c, thereby lowering a temperature of the inner wall 110 of
the combustion chamber 100.
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The lower air supply portion 320 may be connected to a
lower side portion of the combustion chamber 100 to supply the
combustion air A, in such a manner that the combustion air A
may contact the fuel F on the grate 130 to be fired and then
rise along a central portion of the combustion chamber 100.
In addition, the upper air supply portion 310 of the air
supply part may be configured to be connected to an outer wall
120 of the combustion chamber 100, spaced apart from the inner
wall 110 while surrounding the inner wall 110, in such a manner
that the combustion air A may rotate along an external surface
of the inner wall 110 of the combustion chamber 100, and then,
may be introduced into the combustion space 100a through an
inlet 100b.
Thus, the combustion air A supplied through the upper air
supply portion 310 may cool the inner wall 110 while rotating
upwardly along the external surface of the inner wall 110 of
the combustion chamber 100, and then, may be introduced into
the combustion space 100a through the inlet 100b, to be
preheated while rotating downwardly.
In addition, as an example as illustrated in FIG. 2, the
combustion air A supplied through the lower air supply portion
32 0 may cool a lower portion of the inner wall 110, while rotating
downwardly along an external surface of the lower portion of
the inner wall 110 of the combustion chamber 100, before being
introduced into a side-lower portion of the combustion space
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100a.
The combustor according to an exemplary embodiment may
further include a guide member 400 guiding the combustion air
A supplied by the air supply part to rotate downwardly inside
the combustion chamber 100, to cool the inner wall 110 of the
combustion chamber 100 together with the preheating of the
combustion air A.
Here, a rotating flow structure of the combustion air A
supplied to the combustion space 100a through the upper air
supply portion 310 of the air supply part as illustrated in the
drawings will be described below in detail.
In detail, describing the upper air supply portion 310
as an example, as the upper air supply portion 310 may be
connected to a side portion of the combustion chamber 100, to
be inclined with respect to a horizontal plane, the combustion
air A may have rotational force when the combustion air A is
introduced into the combustion space 100a through the inlet 100b .
In detail, the combustion air A may pass through the outer wall
120 and the inner wall 110 of the combustion chamber 100, and
then, may be introduced into the combustion space 100a through
the inlet 1 00b . Even when the combustion air is introduced into
the combustion space 100a after the flow of the combustion air
as described above, the rotational force of the combustion air
A may also be maintained.
The combustion air A, having the maintained rotational
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force, even in the combustion space 100a, as described above,
may be pushed by a subsequent continuous air introduced
subsequently and continuously, and a portion of this combustion
air may rotate while descending, but remaining combustion air
A may be intaken by high-temperature combustion gas reacting
with and fired by the fuel F and flowing upwardly toward the
outlet 100c, and thus, may be moved to a central portion or an
upper portion of the combustion chamber 100.
Thus, according to an exemplary embodiment in the present
disclosure, the combustion air A may be guided by the guide
member 400, such that the combustion air A having the maintained
rotational force may rotate downwardly along the inner wall 110
of the combustion chamber 100 in the combustion space 100a,
other than moving toward a central portion or an upper portion
of the combustion chamber 100.
In this case, the guide member 400 may have a structure
disposed to protrude from the inlet 100b, through which the
combustion air A is introduced into the combustion space 100a,
inwardly of the combustion space 100a, while having a
downwardly-opening structure. In detail, the guide member 400
may include an upper guide plate 410 extending from an upper
structure of the inlet 100b in the combustion chamber 100,
inwardly of the combustion chamber 100, and a side guide plate
411 extending downwardly from the upper guide plate 410 and
spaced apart from the inner wall 110 of the combustion chamber
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100. In this case, the side guide plate 411 may be arranged
to be spaced apart from the inner wall 110 of the combustion
chamber 100 by an appropriate interval, and the upper guide
plate 410 may have a structure extended from an upper end portion
of a position of the inlet 100b of the combustion space 100a
toward the side guide plate 411, in the combustion chamber 100.
For example, as illustrated in the drawings, in a case in which
a flange structure is present above the inner wall 110 of the
combustion chamber 100, and the inlet 100b of the combustion
space 100a is present between the flange structure and the inner
wall 110, the flange structure may function as an upper guide
plate 412.
In addition, according to an exemplary embodiment, a
branching portion configured to provide an amount of combustion
air greater than that of the lower air supply portion 320 may
further be provided in the upper air supply portion 310
supplying the combustion air A to an upper portion of the
combustion chamber 100 such that the combustion air A may rotate
downwardly as described above. As the amount of combustion air
supplied to the upper air supply portion 310 is increased by
the branching portion, preheating of the combustion air A and
an effect of cooling the inner wall 110 of the combustion chamber
100 may be enhanced.
In detail, the branching portion may be provided with a
branch wall 341 for a branch flow of the combustion air A,
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disposed in an air supply line 330 connected, as one flow path,
to the upper air supply portion 310 and the lower air supply
portion 320. A pivoting bar 342 may be mounted on an end portion
of the branch wall 341 to adjust an amount of combustion air
flowing to the upper air supply portion 310 and the lower air
supply portion 320, respectively. The pivoting bar 342 may have
a structure interlocked with a driving unit providing driving
force to the pivoting bar 342 to pivot the pivoting bar 342,
though the structure is not illustrated in the drawings.
On the other hand, as main constituent characteristics,
the combustor according to an exemplary embodiment may include
the clinker collection portion 520, in which clinker generated
by combustion of the fuel F in the combustion space 100a is
collected through a gap 510, and the reintroduction channel 530
configured to allow the combustion air A discharged from the
combustion space 100a to the clinker collection portion 520
through the gap 510 to be reintroduced into the combustion space
100a, to increase efficiency of removing clinker from the
combustion space 100a .
In detail, the clinker collection portion 520 may
downwardly communicate with the gap 510 formed between the inner
wall 110 of the combustion chamber 100 and the grate 130, and
may serve to collect clinker generated by combustion of the fuel
F in the combustion space 100a, through gap 510.
In detail, the clinker, a material remaining after the
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combustion of the fuel F, may move by the combustion air A
rotating downwardly in the combustion space 100a, and thus, may
be discharged from the combustion space 100a through the gap
510 disposed on a lower edge of the combustion space 100a and
formed between the grate 130 and the inner wall 110 of the
combustion chamber 100, to then be collected in the clinker
collection portion 520.
As the reintroduction channel 530 is configured to have
a structure passing through the grate 130 from the clinker
collection portion 520 to the combustion space 100a, the
combustion air A discharged from the combustion space 100a to
the clinker collection portion 520 through the gap 510 may be
reintroduced into the combustion space 100a.
In this case, structures of the combustion space 100a and
the clinker collection portion 520, in which the combustion air
A flows, will be described below in detail. For example, if
only the gap 510 is a passage allowing the combustion air A to
flow into and out of the clinker collection portion 520, the
combustion air A may collide with combustion air A reintroduced
into the combustion space 100a through the gap 510 when the
combustion air A is discharged from the combustion space 100a
to the clinker collection portion 520 through the gap 510. Thus,
since an outflow of the combustion air A to the clinker
collection portion 520 may not be smoothly performed, the
clinker may not be efficiently collected in the clinker
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collection portion 520.
However, according to an exemplary embodiment, the
reintroduction channel 530 configured to allow the combustion
air A to be reintroduced into the combustion space 100a may be
provided, in such a manner that the combustion air A may be
smoothly discharged from the combustion space 100a to the
clinker collection portion 520, to increase efficiency of
removing clinker from the combustion space 100a.
In this case, the reintroduction channel 530 may have a
structure passing through the grate 130 from the clinker
collection portion 520 to the combustion space 100a, and may
be provided as a passage separate from the gap 510 while being
formed to pass through the grate 130 in a lower portion of the
combustion chamber 100, and a detailed structure thereof in the
present disclosure is not particularly limited.
As illustrated in the drawings, the reintroduction
channel 530 may be provided as at least one or more channels,
for example, a plurality of reintroduction channels may be
formed in a central circumferential portion of a lower portion
of the combustion chamber 100.
On the other hand, although the combustion air A is
reintroduced into the combustion space 100a through the
reintroduction channel 530, a portion of clinker may also be
reintroduced into the combustion space 100a together with the
combustion air A in the re-inflow process as described above.
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In detail, as the combustion air A is away from the gap 510 in
the clinker collection portion 520 in terms of a flow structure
of combustion air, for example, the combustion air A flows from
a lower portion of the combustion chamber 100 toward a central
portion thereof, a flow velocity of the combustion air
reintroduced into the combustion space 100a through the
reintroduction channel 530 may increase, and as the flow
velocity increases, clinker may be easily moved into the
combustion space 100a by the combustion air A.
Thus, as illustrated in FIG. 4, the reintroduction channel
530 may have a structure in which cross-sectional areas thereof
are decreased toward a center of the combustion chamber 100 in
a lower portion of the combustion chamber 100, byway of example.
Thus, the size of a cross-sectional area of the reintroduction
channel may be relatively reduced in a portion thereof in which
a flow velocity for re-inflow into the combustion space 100a
is relatively fast, and the size of a cross-sectional area of
the reintroduction channel may be relatively increased in a
portion thereof in which a flow velocity for re-inflow into the
combustion space 100a is relatively slow, thereby reducing an
amount of clinker reintroduced into the combustion space 100a
through the reintroduction channel 530. For example, the
cross-sectional area of the reintroduction channel 530 refers
to a cross-sectional area at an angle at which a flow rate is
controlled at the time of size change, and as an example, may
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refer to a transversal cross-sectional area in the drawing.
Further, for example, when the reintroduction channel 530
is formed as illustrated in FIG. 3, the reintroduction channel
maybe formed to further narrow toward a center of the combustion
chamber 100 in a lower portion of the combustion chamber 100,
though not illustrated in the drawing.
In addition, as another example as illustrated in FIG.
5, the reintroduction channel 530 may have a structure in which
in a lower portion of the combustion chamber 100, the number
of the reintroduction channels is decreased toward a center of
the combustion chamber 100. Thus, the number of the
reintroduction channels may be relatively reduced in a portion
thereof in which a flow velocity for re-inflow into the
combustion space 100a is relatively fast, and the number of the
reintroduction channels may be relatively increased in a
portion thereof in which a flow velocity for re-inflow into the
combustion space 100a is relatively slow, thereby reducing an
amount of clinker reintroduced into the combustion space 100a
through the reintroduction channel 530.
For example, the reintroduction channels 530 illustrated
in FIGS. 3 to 5 described above may have a proper size able to
prevent the fuel F on the grate 130 from passing therethrough
and being dropped.
In addition, as illustrated in (b) of FIG. 6, the combustor
according to an exemplary embodiment may further include a flow
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controlling member 540 configured to restrict a re-inflow of
clinker in the clinker collection portion 520 to the combustion
space 100a together with the combustion air A.
As the flow controlling member 540 is configured to
control a flow structure of the combustion air in the clinker
collection portion 520, a re-inflow of the clinker in the
clinker collection portion 520 to the combustion space 100a,
together with the combustion air A, may be restricted.
In detail, as illustrated in (b) of FIG. 6, the flow
controlling member 540 may have a structure extending
downwardly from a lower portion of the combustion chamber 100
inwardly of the clinker collection portion 520, and may also
have a structure extending to be inclined downwardly toward a
center of the combustion chamber 100.
In this case, a flow structure of combustion air in the
clinker collection portion 520 will be described below with
reference to FIG. 6. First, (a) of FIG. 6 is a view illustrating
a combustion air flow structure in a case in which the flow
controlling member 540 is not installed, and (b) of FIG. 6 is
a view illustrating a combustion air flow structure in a case
in which the flow controlling member 540 is installed.
In this case, a direction of the combustion air A
discharged from the combustion space 100a to the clinker
collection portion 520 through the gap 510 maybe changed along
an inner surface of the clinker collection portion 520 as
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Illustrated in (a) of FIG. 6, and then, may be immediately
reintroduced into the combustion space 100a through the
reintroduction channel 530. On the other hand, in (b) of FIG.
6, the combustion air A may be guided by the flow controlling
member 540 during a process in which the combustion air A is
moved toward the reintroduction channel 530 after the direction
of the combustion air is changed while colliding with an inner
surface of the clinker collection portion 520, to thereby move
toward a center of the combustion chamber 100 in a horizontal
direction by a certain distance and then be reintroduced into
the combustion space 100a through the reintroduction channel
530.
As described above, as illustrated in (b) of FIG. 6, as
the direction of the combustion air A is changed by the flow
controlling member 540 in a horizontal direction, without
flowing of the combustion air toward the reintroduction channel
530 via immediate rising of the combustion air at a high speed
in the clinker collection portion 520, a flow velocity of the
combustion air A may be reduced, and further, a flow length may
be increased. In addition, as vortex intensity is reduced,
rather than extending a flow diameter of the combustion air
rotating below the gap 510 in a vertical direction, clinker
flowing along with the combustion air A may be effectively
separated from the combustion air A by self weight, and thus,
clinker collecting efficiency of the clinker collection portion
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520 may be increased.
On the other hand, the combustor according to an exemplary
embodiment may further include a partition wall 600 formed in
the gap 510 to be able to separate an air supply passage 510a
and a clinker collection passage 510b from each other when the
combustion air A provided by the lower air supply portion 320
is supplied to the combustion chamber 100 through the gap 510.
The lower air supply portion 320 may be connected to a
lower side portion of the combustion chamber 100, to supply the
combustion air A in such a manner that the combustion air A may
be in contact with the fuel F on an upper portion of the grate
130 to be burned and then may rise along a central portion of
the combustion chamber 100. In this case, as illustrated in
FIG. 1, the gap 510 may be utilized as a passage through which
the combustion air is introduced into the combustion space 100a.
In this case, in the gap 510, a flow of the combustion
air A flowing out from the combustion space 100a to the clinker
collection portion 520, and a flow of the combustion air A
supplied from the lower air supply portion 320 to the combustion
space 100a, may interfere with each other, and thus, clinker
collecting efficiency of the clinker collection portion 520 may
be lowered. In order to prevent the clinker collecting
efficiency of the clinker collection portion 520 from being
deteriorated, the partition wall 600 may be installed in the
gap 510.
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In detail, the partition wall 600 may have a structure
in which the air supply passage 510a and the clinker collection
passage 510b may be separated from each other in the gap 510,
such that clinker may be collected by the clinker collecting
portion 520 through the gap 510. As an example, as illustrated
in the drawings, the partition wall 600 may be disposed
lengthwise in a vertical direction, but the layout structure
thereof is not limited thereto. For example, any layout
structure of the partition wall to correspond to an adjacent
structure may be used as long as the air supply passage 510a
and the clinker collection passage 510b may be separated from
each other in the gap 510.
In addition, the combustor according to an exemplary
embodiment may further include a check member 700 provided
inside the clinker collection portion 520 as illustrated in FIG.
7.
The check member 700 may serve to block upwardly-reverse
passage of the clinker having passed downwardly, and in detail,
may have a structure in which a plurality of through holes 700a
having a downwardly-narrowed shape are formed.
In the case of the downwardly-narrowed structure of the
through hole 700a of the check member 700, in which an upper
portion of the through hole is relatively wide and a width of
the through hole is gradually reduced downwardly, clinker may
be easily introduced through a relatively-large upper opening
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of the through hole 700a, such that the clinker may smoothly
pass downwardly through the through hole 700a, while in the case
in which the clinker passes through the through hole 700a
upwardly in a reverse direction, the clinker may not easily pass
through a relatively-narrow lower opening of the through hole.
Thus, most of the clinker may not pass upwardly through the
through hole 700a.
The clinker collection efficiency of the clinker
collection portion 520 may be increased by the check member 700
configured as described above.
In addition, although not illustrated in the drawings,
water may be received in a lower portion of the clinker
collection portion 520 in such a manner that clinker may be
deposited therein. For example, when the clinker is seated in
the water, the clinker may not be easily separated by attraction
of water, and furthermore, when the clinker is immersed in the
water, the clinker may not be influenced by a flow of the
combustion air A at all, and thus, clinker collection efficiency
of the clinker collection portion 520 may be further enhanced.
As a result, as described above, according to an exemplary
embodiment in the present disclosure, the reintroduction
channel 530 may be configured to pass through the grate 130 from
the clinker collecting portion 520 to the combustion space 100a,
such that the combustion air A having been discharged from the
combustion space 100a to the clinker collection portion 520
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CA 02987567 2017-11-28
through the gap 510 may be reintroduced into the combustion
space 100a. Thus, as the combustion air A may smoothly flow
from the combustion space 100a to the clinker collection portion
520, clinker removal efficiency of the combustion space 100a
may be increased.
While exemplary embodiments have been shown and described
above, it will be apparent to those skilled in the art that
modifications and variations could be made without departing
from the scope of the present invention as defined by the
appended claims.
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