Note: Descriptions are shown in the official language in which they were submitted.
REMOVABLE FILTER SYSTEM
BACKGROUND OF THE DISCLOSURE
Field of the disclosure
[1] The present disclosure relates to a removable filter system, and
more particularly, to
a removable filter system for detachably coupling a filter unit to an air
supply unit provided
in a boiler.
Related Art
1 0 [2] In general, a gas boiler uses a gas as fuel and water as a
heating medium for heating,
and in the case of a hot water and heating boiler, it is a combustor that
circulates heating
water inside the boiler through a three-way valve and heats feed water in a
form of indirect
heat exchange to make hot water available. The gas boiler is installed in
various buildings
such as a house, an office, a factory and the like, and is configured to
supply hot water or
heating water. The gas boiler may be classified into a general boiler and a
condensing boiler
depending on whether condensate is generated, and classified into an
instantaneous type
boiler and a hot water storage type boiler depending on a hot water supply
method.
131 Referring to a basic structure of such a gas
boiler, a combustion device and a heat
exchanger are provided inside a housing. In the combustion device, a flame by
fuel, i.e., gas,
is combusted in a form of a free flame having an appropriate length. Then, the
combustion
gas from the combustion device is discharged through a pipe after exchanging
heat with a
heating medium in the heat exchanger.
[4] Meanwhile, in order to keep the combustion
efficiency of the combustion device
constant, the ratio of air and fuel flow rate needs to be kept constant. To
this end, air needs
to be constantly supplied from the outside to an air inlet of the housing, and
the air needs to
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be free of various contaminants such as fine dust. That is, when various
contaminants
contained in the air supplied to the air inlet are supplied to the combustion
device as they are,
the ratio of air and fuel flow rate varies arbitrarily As a result, the mixing
ratio of gas and
air is not properly controlled or combustion does not proceed properly, which
decreases heat
exchange efficiency
151 To solve the above problem, referring to Korean
Patent No. 10-1902455, a filter unit
is installed around an air inlet of a boiler casing so that the outside air is
filtered and then
introduced into the casing, and then introduced into the casing. Accordingly,
the filter
installed at the air inlet of the boiler filters foreign materials contained
in the air flowing into
the casing through the air inlet and quantitatively supplies the air required
for combustion of
the boiler.
[6] However, in the conventional filter for the air
inlet of the boiler, when the filter unit
filters out foreign materials above an allowable amount, the filter unit is
completely clogged
over time, so that essential amount of air necessary for combustion cannot not
be provided to
the combustion device, which causes incomplete combustion or a flashback
phenomenon in
the combustion device.
SUMMARY
1711 In view of the above, the present disclosure
provides a removable filter system that
allows a filter unit to be easily replaced by detachably coupling the filter
unit to an air supply
unit provided in a boiler.
[8] In an aspect, the present disclosure provides a
removable filter system including: a
penetrating part formed through one side of an air supply unit provided in a
boiler; and a
filter unit including a support portion formed to cover an inside of the air
supply unit and
having a guide hole formed in a central portion, a handle portion integrally
connected to one
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side of the support portion and formed to cover the penetrating part, and a
filter for covering
the guide hole, wherein the filter unit is detachably coupled to the air
supply unit.
191 In addition, a guide protrusion may be formed on an
outer surface of the handle
portion to be gripped by a user.
[10] Further, the filter may be formed concave downward.
[11] Furthermore, the filter may include a flat portion positioned to be
spaced apart from
the guide hole downward and formed to be flat, and a connecting portion formed
to extend
from an outer periphery of the flat portion to an inner periphery of the guide
hole to connect
the outer periphery of the flat portion and the inner periphery of the guide
hole, and an
accommodation space may be provided between the flat portion and the
connecting portion.
[12] In addition, the filter may be formed in a mesh shape.
[13] Further, the removable filter system may further include a protrusion
part formed to
protrude outward from an edge of the penetrating portion, the protrusion part
having an
empty space formed therein, wherein one side of the protrusion part is formed
integrally with
the penetrating portion to communicate with the penetrating portion, and an
insertion hole is
formed at the other side of the protrusion part, the support portion is guided
into the
protrusion part through the insertion hole, and then the support portion
passes through the
penetrating portion to be inserted into the air supply unit, and when the
support portion is
inserted into the air supply unit, the handle portion is detachably coupled to
the insertion hole.
[14] Further, a first bolt coupling portion may be formed on each of both
sides of the
insertion hole, a second bolt coupling portion may be formed to cover the
first bolt coupling
portion on each of both sides of the handle portion, and a bolt may be
detachably coupled to
the second bolt coupling portion and the first bolt coupling portion.
[15] Further, the protrusion part may be formed at one
side of an outer periphery of the air
supply unit, a guide groove may be formed on one side of an inner periphery of
the air supply
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unit opposite to the protrusion part, and when the support portion is inserted
into the air
supply unit, the support portion may move to one side of the air supply unit
while being
guided along the protrusion part, and then move to the other side of the air
supply unit while
being guided along the guide groove, and both end portions of the guide groove
may be
formed to extend toward of the protrusion part.
[16] According to the present disclosure, since the filter unit is
detachably coupled to the
air supply unit, after removing the contaminated filter unit coupled to the
air supply unit, a
new filter unit is coupled to the air supply unit or the existing filter unit
is reused after
removing contaminants remaining in the filter.
BRIEF DESCRIPTION OF THE DRAWINGS
[17] FIG. 1 is a view showing a state in which a removable filter system
according to one
embodiment of the present disclosure is mounted on a boiler.
[18] FIG. 2 is a view schematically showing a state in which the removable
filter system
according to one embodiment of the present disclosure is separated.
[19] FIG. 3 is a cross-sectional view showing an air supply unit of the
removable filter
system according to one embodiment of the present disclosure.
PO] FIG. 4 is a cross-sectional view illustrating a
state in which the filter of the
removable filter system according to one embodiment of the present disclosure
is inserted
into the air supply unit along the protrusion part.
[21] FIG. 5 is a view schematically showing a state in which the filter of
the removable
filter system according to one embodiment of the present disclosure is coupled
to the air
supply unit.
[22] FIG. 6 is a cross-sectional view showing a state in which the filter
of the removable
filter system according to one embodiment of the present invention is coupled
to the air
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supply unit.
1231 <Description of Reference Numerals >
100: removable filter system
110: air supply unit
110a: penetrating portion
112: guide groove
120: protrusion part
120a: insertion hole
122: first bolt coupling portion
130: filter unit
132: support part
132a: guide hole
134: handle portion
134a: guide protrusion
134b: second bolt coupling part
136: filter
136a: flat portion
136b: connecting portion
136c: accommodation space
140: packing part
DESCRIPTION OF EXEMPLARY EMBODIMENTS
124] Hereinafter, a removable filter system according to
one embodiment of the present
disclosure will be described in more detail with reference to the accompanying
drawings.
1251 FIG. 1 is a view showing a state in which a removable filter system
according to one
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embodiment of the present disclosure is mounted on a boiler, and FIG. 2 is a
view
schematically showing a state in which the removable filter system according
to one
embodiment of the present disclosure is separated. FIG. 3 is a cross-sectional
view showing
an air supply unit of the removable filter system according to one embodiment
of the present
disclosure.
[26] Referring to FIGS. 1 to 3, the removable filter system 100 according
to one
embodiment of the present disclosure includes a penetrating portion 110a, a
protrusion part
120, a filter unit 130, and a packing part 140, wherein the filter unit 130 is
detachably
coupled to the air supply unit 110 provided in a boiler 50, so that the filter
unit 130 can be
easily replaced.
[27] The boiler 50 has a typical configuration in which various parts such
as a combustion
device (not shown) and a heat exchanger (not shown) are provided inside a
housing 52
formed in a substantially hexahedral shape.
[28] The air supply unit 110 and an exhaust unit (not shown) are provided
above the
housing 52 so that air is supplied into a casing through the air supply unit
110 and the air
inside the casing is exhausted to the outside through the exhaust unit.
[29] The air supply unit 110 is formed in a cylindrical shape, for example,
and the
penetrating portion 110a is formed through along one side of an outer
periphery of the air
supply unit 110.
[301 The protrusion part 120 is formed to protrude from one side of the
outer periphery of
the air supply unit 110. Specifically, the protrusion part 120 is integrally
formed to protrude
outward from an edge of the penetrating portion 110a.
1311 An empty space is formed inside the protrusion part
120, one side of the protrusion
part 120 is formed integrally with the penetrating portion 110a to communicate
with the
penetrating portion 110a, and the other side of the protrusion part 120 has an
insertion hole
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120a that is formed therethough. .
[32] Further, a guide groove 112 may be formed on one side of an inner
periphery of the
air supply unit 110 opposite to the protrusion part 120. The guide groove 112
is formed
along one side of the inner periphery of the air supply unit 110. Both end
portions of the
guide groove 112 in the longitudinal direction are formed to extend toward the
protrusion part
120, and both ends of the guide groove 112 are positioned to face the
protrusion part 120.
[33] The filter unit 130 is detachably coupled to the air supply unit 110,
and includes a
support portion 132, a handle portion 134, and a filter 136. One side of the
support portion
132 is formed in a circular shape to cover the inside of the air supply unit
110, and the other
side is formed to be seated inside the protrusion part 120. Further, a guide
hole 132a is
formed in a central portion of one side of the support part 132. The handle
portion 134 is
integrally connected to an outer side of the support portion 132 and is formed
in a plate shape
to cover the guide hole 132a. When the handle portion 134 is positioned to
cover the guide
hole 132a, the handle portion 134 can also cover the penetrating portion 110a
positioned to
face the guide hole 132a. In addition, a pair of guide protrusions 134a are
protruded from
both sides of an outer surface of the handle portion 134 positioned opposite
to the support
portion 132. The guide protrusions 134a are formed to protrude outward of the
guide hole
132a, so that a user can easily grip the guide protrusions 134a by hand.
[34] The filter 136 may be formed in a mesh shape which allows air to pass
therethrough
and blocks foreign substances, for example. The filter 136 is configured to be
concave
downward, and specifically may include a flat portion 136a that is positioned
to be spaced
apart from a lower side of the guide hole 132a and is formed flat, and a
connecting portion
136b formed to extend from an outer periphery of the flat portion 136a to an
inner periphery
of the guide hole 132a to connect the outer periphery of the flat portion 136a
and the inner
periphery of the guide hole 132a. Further, an accommodation space 136c is
provided
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between the flat portion 136a and the connecting portion 136b.
131 The packing part 140 has a common configuration
that it is positioned between the
handle portion 134 and the insertion hole 120a, and makes the handle portion
134 and the
insertion hole 120a watertight when the handle portion 134 is positioned to
cover the
insertion hole 120a.
1361 FIG. 4 is a cross-sectional view illustrating a
state in which the filter of the
removable filter system according to one embodiment of the present disclosure
is inserted
into the air supply unit along the protrusion part, and FIG. 5 is a view
schematically showing
a state in which the filter of the removable filter system according to one
embodiment of the
present disclosure is coupled to the air supply unit, and FIG. 6 is a cross-
sectional view
showing a state in which the filter of the removable filter system according
to one
embodiment of the present invention is coupled to the air supply unit.
13711 Referring to FIGS. 4 to 6, in the process in which
the filter unit 130 is coupled to the
air supply unit 110, first, the support unit 132 is inserted into the
protrusion part 120 through
the insertion hole 120a. At this time, since the support portion 132 is guided
along an inner
bottom surface of the protrusion part 120, the support portion 132 can slide
safely toward the
air supply unit 110 along the inner bottom surface of the protrusion part 120
without shaking
inside the protrusion part 120. Then, the support portion 132 is inserted into
the air supply
unit 110 through the penetrating portion 110a. In this case, the outer
periphery of the
support portion 132 can safely slide toward the air supply unit 110 along the
guide groove
112 in a state that it is inserted into the guide groove 112. As such, when
the support
portion 132 of the filter unit 130 is inserted into the air supply unit 110,
the support portion
132 can be safely inserted into the air supply unit 110 while being guided by
the protrusion
part 120 and the guide groove 112.
1381 Further, in a state in which the support portion 132 is inserted into
the air supply unit
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110, the filter unit 136 positioned on the support portion 132 filters various
contaminants in
the air supplied through the air supply unit 110. And, in the process of
filtering the
contaminants in the air, various contaminants accumulate in a receiving space
136c of the
filter 136. Since the filter 136 provides a space for contaminants to
accumulate, when the
filter unit 130 is removed from the air supply unit 110, the contaminants
filtered by the filter
136 do not remain in the air supply unit 110 and can be easily moved to the
outside.
[39] In addition, when the support portion 132 is inserted into the air
supply unit 110, the
handle portion 134 is positioned to cover the insertion hole 120a. At this
time, a first bolt
coupling portion 122 is formed on each of both sides of the insertion hole
120a, and a second
bolt coupling portion 134b is formed to cover the first bolt coupling portion
122 on each of
both sides of the handle portion 134. And, a bolt B is detachably coupled to
the second bolt
coupling portion 134b and the first bolt coupling portion 122. In this way,
since the
insertion part is detachably located in the insertion hole 120a, when a lot of
contaminants are
accumulated in the filter 136, after releasing the coupling of the bolt B, the
handle portion
134 is removed to the outside. Then, the support portion 132 is removed from
the air supply
unit 110, and the entire filter unit 130 is removed from the air supply unit
110. Thereafter, a
new filter unit 130 may be coupled to the air supply unit 110, or the existing
filter unit 130
may be reused after removing contaminants remaining in the filter 136.
[40] Although the present disclosure has been described in detail in the
above
embodiments, it goes without saying that the present disclosure is not limited
thereto, and it is
apparent to those skilled in the art that various changes and modifications
may be made
within the scope of the technical spirit of the present disclosure, and these
variations and
modifications fall within the scope of the appended claims, the technical idea
should also be
regarded as belonging to the present disclosure.
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