AU2022271372A1 - Heat exchanger fixing plate, heat exchanger and indoor unit - Google Patents
Heat exchanger fixing plate, heat exchanger and indoor unit Download PDFInfo
- Publication number
- AU2022271372A1 AU2022271372A1 AU2022271372A AU2022271372A AU2022271372A1 AU 2022271372 A1 AU2022271372 A1 AU 2022271372A1 AU 2022271372 A AU2022271372 A AU 2022271372A AU 2022271372 A AU2022271372 A AU 2022271372A AU 2022271372 A1 AU2022271372 A1 AU 2022271372A1
- Authority
- AU
- Australia
- Prior art keywords
- heat exchanger
- fixing plate
- hairpin
- width direction
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003507 refrigerant Substances 0.000 claims abstract description 49
- 238000003780 insertion Methods 0.000 claims abstract description 16
- 230000037431 insertion Effects 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 description 17
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0067—Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/32—Supports for air-conditioning, air-humidification or ventilation units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
- F28F1/325—Fins with openings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
- F28F2280/06—Adapter frames, e.g. for mounting heat exchanger cores on other structure and for allowing fluidic connections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Geometry (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
Abstract
OF THE DISCLOSURE
A heat exchanger fixing plate according to the present disclosure is for fixing a
heat exchanger main body including a heat transfer tube through which a refrigerant is
5 flowed to an inside of a casing of an indoor unit, the heat transfer tube is formed of a
plurality of straight tube parts extending in the width direction of the casing and a
plurality of curved hairpin parts each connecting end portions of the straight tube parts
adjacent to each other. The heat exchanger fixing plate includes a fixing plate main
body extending in a direction intersecting the width direction of the casing and having a
10 plurality of insertion holes through which the hairpin parts are allowed to be inserted
toward one side in the width direction, and a cover installed on the fixing plate main
body to cover the hairpin part protruding from the fixing plate main body toward one side
in the width direction and having a first through hole passing through an inner arc of the
hairpin part.
4/4
FIG. 4
x 341
/ 300 301
302a 301 h -: - 31
305
_____ ____ ____330a
__________' (330)
306
330b(330) p
Po D3
Description
4/4
FIG. 4 x 341 / 300 301
302a 301 h -: - 31 305 _____ ____ ____330a
__________' (330)
306
330b(330) p
Po D3
This application claims priority from Japanese Application No. 2021-185757 filed on 15 November 2021, the contents of which are to be taken as incorporated herein by this reference.
Field of the Invention
[0001] The present disclosure relates to a heat exchanger fixing plate, a heat exchanger
and an indoor unit.
Description of Related Art
[0002] For example, Japanese Unexamined Patent Application, First Publication No.
2014-070759 discloses a heat exchanger fixing plate for fixing a heat exchanger in a
casing of an indoor unit. The heat exchanger is fixed in the casing by inserting hairpin
parts of a plurality of heat transfer tubes of the heat exchanger into the heat exchanger
fixing plate. The hairpin parts protruding from the heat exchanger fixing plate are each
covered with an insertion part in a state of being inserted into the insertion part.
[0003] Incidentally, when vibration occurs in the heat transfer tube due to a flow of a
refrigerant, maintenance is performed on the indoor unit, or the like, a force in a direction
in which the heat transfer tube is inserted into the heat exchanger fixing plate may act
from the hairpin part to the insertion part. In the technology described in Japanese
Unexamined Patent Application, First Publication No. 2014-070759, the hairpin part of
the heat transfer tube may collide with the insertion part.
[0004] The present disclosure has been made to solve the above-described problems,
and an objective thereof is to provide a heat exchanger fixing plate, a heat exchanger, and
an indoor unit in which collision of a heat transfer tube with a hairpin part can be
suppressed.
[0005] In order to solve the problems described above, a first heat exchanger fixing
plate according to the present disclosure is for fixing a heat exchanger main body
including a heat transfer tube through which a refrigerant is flowed to an inside of a
casing of an indoor unit, the heat transfer tube is formed of a plurality of straight tube
parts extending in a width direction of the casing and a plurality of curved hairpin parts
each connecting end portions of the straight tube parts adjacent to each other, the heat
exchanger fixing plate includes: a fixing plate main body extending in a direction
intersecting the width direction of the casing and having a plurality of insertion holes
through which the hairpin parts are allowed to be inserted toward a first side in the width
direction; and a cover which is installed on the fixing plate main body to cover the
hairpin part protruding from the fixing plate main body toward a first side in the width
direction and having a first through hole passing through an inner arc of the hairpin part.
[0006] Also, a second heat exchanger fixing plate according to the present disclosure is
for fixing a heat exchanger main body including a heat transfer tube through which a
refrigerant is flowed to an inside of a casing of an indoor unit, the heat transfer tube is
formed of a plurality of straight tube parts extending in the width direction of the casing
and a plurality of curved hairpin parts each connecting end portions of the straight tube
parts adjacent to each other, the heat exchanger fixing plate includes: a fixing plate main
body extending in a direction intersecting the width direction of the casing and having a
plurality of insertion holes through which the hairpin parts are allowed to be inserted
toward a first side in the width direction; a cover which is installed on the fixing plate main body and including a topside part facing the hairpin part in the width direction; and a tying member tying the hairpin part and the cover together by being wound over an inner arc of the hairpin part and the topside part of the cover.
[0007] Also, a heat exchanger according to the present disclosure includes: the heat
exchanger fixing plate; and the heat exchanger main body which is fixed to the inside of
the casing via the heat exchanger fixing plate, wherein the heat exchanger main body
includes a fin group adjacent to the fixing plate main body in the width direction and
formed of a plurality of fins each extending in a direction intersecting the width direction
and aligned in the width direction.
[0008] Also, an indoor unit according to the present disclosure includes a casing, a fan
accommodated in the casing and introducing air into the casing; and a heat exchanger
accommodated in the casing, wherein the heat exchanger is configured to exchange heat
between the air and the refrigerant.
[0009] According to the present disclosure, a heat exchanger fixing plate, a heat
exchanger, and an indoor unit in which a collision of a heat transfer tube with a hairpin
part can be suppressed can be provided.
[0010] FIG. 1 is a perspective view illustrating a schematic configuration of an indoor
unit according to an embodiment of the present disclosure.
FIG. 2 is a view of a cover of a heat exchanger fixing plate according to a first
embodiment of the present disclosure from an out-of-plane direction.
FIG. 3 is a view of the cover of the heat exchangerfixing plate according to the
first embodiment of the present disclosure from an in-plane direction.
FIG. 4 is a view of a cover of a heat exchanger fixing plate according to a second embodiment of the present disclosure from an out-of-plane direction.
[0011] Hereinafter, an indoor unit according to embodiments of the present disclosure
will be described on the basis of the drawings.
[0012] <First embodiment>
(Indoor unit)
An indoor unit is a device provided indoors and conditioning indoor air by
exchanging heat between a refrigerant that is exchanged with an outdoor unit provided
outdoors and the indoor air. An air conditioner is constituted by an indoor unit and an
outdoor unit. In the present embodiment, an example in which an air conditioner
performs a cooling operation will be described.
[0013] As illustrated in FIG. 1, the indoor unit 100 includes a casing 1, a fan 2, a heat
exchanger 3 and a filter part 4.
[0014] (Casing)
The casing 1 is constituted by a plurality of panels and is provided on a wall
surface W in a room. The casing 1 forms an outer casing of the indoor unit 100 and
defines a housing space R for accommodating devices of various types therein. The
casing 1 has a mounting surface 11, an upper surface 12, a lower surface 13, a front
surface 14 and side surfaces.
[0015] The mounting surface 11 is a surface facing the wall surface W. The mounting
surface 11 is fixed to the wall surface W in the room via mounting members or the like.
In the present embodiment, a direction in which the wall surface W and the mounting
surface 11 face each other is referred to as an "installation direction D1." That is, the
installation direction D1 is a direction perpendicular to the wall surface W. The mounting surface 11 has a rectangular shape when viewed in the installation direction
D1.
[0016] In the present embodiment, "the installation direction D1" includes a first
direction horizontally approaching the wall surface W and a second direction horizontally
separating from the wall surface W.
[0017] The upper surface 12 faces upward in a vertical direction D2 and connected to
an upper side edge of the mounting surface 11 in the vertical direction D2. A suction
port for introducing indoor air into the housing space R is preferably formed on the upper
surface 12. The upper surface 12 is curved downward in the vertical direction D2 as
separating from the mounting surface 11 in the installation direction D1. The upper
surface 12 has a rectangular shape when viewed above in the vertical direction D2.
[0018] The lower surface 13 faces downward in the vertical direction D2 and connected
to a lower side edge of the mounting surface 11 in the vertical direction D2. A blowout
port for discharging the air introduced from the upper surface 12 side is preferably
formed on the lower surface 13. The lower surface 13 in the present embodiment is
curved upward in the vertical direction D2 as separating from the mounting surface 11 in
the installation direction D1. The lower surface 13 has a rectangular shape when
viewed below in the vertical direction D2.
[0019] The vertical direction D2 in the present embodiment is a direction being parallel
to a direction of gravity. The "upward in the vertical direction D2" means a direction
from the lower surface 13 toward the upper surface 12. The "downward in the vertical
direction D2" means a direction from the upper surface 12 toward the lower surface 13,
which is opposite to the upward in the vertical direction D2.
[0020] The front surface 14 is a surface located opposite to the mounting surface 11 in
the installation direction D1 and extending so as to be parallel to the wall surface W.
The front surface 14 is connected to front edges of the upper surface 12 and the lower
surface 13 in the installation direction D1. The front surface 14 has a rectangular shape
when viewed in the installation direction D1.
[0021] Here, the mounting surface 11, the upper surface 12, the lower surface 13 and
the front surface 14 have a width direction D3 perpendicular to the installation direction
D1 and the vertical direction D2 as a longitudinal direction.
[0022] The side surfaces are a pair of surfaces that close a cylindrical space (housing
space R), which extends in the width direction D3 and is formed by the mounting surface
11, the upper surface 12, the lower surface 13 and the front surface 14, from a first side
and a second side in the width direction D3. The side surfaces are connected over the
end portions of all the mounting surface 11, the upper surface 12, the lower surface 13
and the front surface 14 on the first side and the second side in the width direction D3.
[0023] (Fan)
The fan 2 is a cross-flow fan extending in the width direction D3 in the housing
space R and capable of introducing air into the casing 1. The fan 2 rotates in the
housing space R to suction indoor air from the suction port on the upper surface 12 side
and blow out the suctioned air from the blowout port on the lower surface 13 side.
[0024] (Heat exchanger)
The heat exchanger 3 is provided to surround the fan 2 from an outer
circumference in the housing space R. The heat exchanger 3 includes a heat exchanger
main body 30 and a heat exchanger fixing plate 300.
[0025] (Heat exchanger main body)
The heat exchanger main body 30 extends in the width direction D3 and
exchanges heat between the air suctioned into the housing space R by the fan 2 and the
refrigerant. The heat exchanger main body 30 includes a first heat exchange part 31, a second heat exchange part 32, a third heat exchange part 33, a fourth heat exchange part
34 and a connection member.
[0026] The first heat exchange part 31 is placed in the housing space R so as to be
above the fan 2 in the vertical direction D2 and closer to the mounting surface 11 than the
fan 2 in the installation direction D1. The first heat exchange part 31 includes a fin
group 311 and a heat transfer tube 310.
[0027] The fin group 311 is formed by a plurality of flat plate-shaped fins 311a
extending in a direction intersecting the width direction D3 and disposed at regular
intervals in the width direction D3. The fins 311a are formed of ametal such as
aluminum.
[0028] The heat transfer tube 310 is a tube formed of a metal such as copper through
which the refrigerant flows. The heat transfer tube 310 includes a plurality of straight
tube parts 310a and a plurality of hairpin parts 31Ob.
[0029] The straight tube parts 310a are cylindrical tubes extending in the width
directionD3. The straight tube parts 310a extend to penetrate the fins 311a, which are
disposed in the width direction D3 in the fin group 311, in the width direction D3.
[0030] The hairpin parts 310b are tubes each connecting end portions in the width
direction D3 of the straight tube parts 310a adjacent to each other. Thehairpinpart
31Ob is a U-shaped bent tube that is curved so that a direction in which the refrigerant
flows in the straight tube part 310a is turned by 180.
[0031] In the present embodiment, a configuration in which the heat transfer tube 310
includes 18 straight tube parts 31Oa and 17 hairpin parts 31Ob is an exemplary example.
In FIG. 1, only nine hairpin parts 31Ob of the first heat exchange part 31 disposed on a
first side of the fin group 311 in the width direction D3 are illustrated. The remaining
eight hairpin parts 31Ob are disposed on a second side of the fin group 311 in the width direction D3 to connect end portions of the adjacent straight tube parts 310a on a second side in the width direction D3 so that the refrigerant sequentially flows through the straight tube parts 310a.
[0032] The refrigerant that has flowed into one straight tube part 310a flows through the
one straight tube part 310a in the width direction D3, and then flows into another straight
tube part 310a adjacent thereto through the hairpin part 310b. Thisflowofthe
refrigerant is sequentially repeated, and thereby the refrigerant circulates through the
straight tube parts 310a and the hairpin parts 31Ob of the heat transfer tube 310 in the first
heat exchange part 31. Cold heat of the refrigerant is conducted to the fins 311a of the
first heat exchange part 31 via tube walls of the straight tube parts 310a.
[0033] The second heat exchange part 32 is placed in the housing space R so as to be
above the fan 2 in the vertical direction D2 and further from the mounting surface 11 than
the fan 2 in the installation direction D1. The second heat exchange part 32 includes a
fin group 321 and a heat transfer tube 320.
[0034] The fin group 321 is formed by a plurality of fins 321a extending in a direction
intersecting the width direction D3 and disposed at regular intervals in the width
directionD3. The fins 321a are formed of a metal such as aluminum.
[0035] The fin group 321 of the second heat exchange part 32 and the fin group 311 of
the first heat exchange part 31 are integrally fixed by a connection member connecting
them in the installation direction Dl. The positional relationship between the first heat
exchange part 31 and the second heat exchange part 32 is defined by the connection
member.
[0036] The heat transfer tube 320 is a tube formed of a metal such as copper through
which the refrigerant flows. The heat transfer tube 320 includes a plurality of straight
tube parts 320a and a plurality of hairpin parts 320b.
[0037] The straight tube parts 320a are cylindrical tubes extending in the width
directionD3. The straight tube parts 320a extend to penetrate the fins 321a, which are
disposed in the width direction D3 in the fin group 321, in the width direction D3.
[0038] The hairpin parts 320b are tubes each connecting end portions in the width
direction D3 of the straight tube parts 320a adjacent to each other. The hairpin part
320b is a U-shaped bent tube that is curved so that a direction in which the refrigerant
flows in the straight tube part 320a is turned by 180.
[0039] In the present embodiment, as in the heat transfer tube 310 of the first heat
exchange part 31, a configuration in which the heat transfer tube 320 includes 18 straight
tube parts 320a and 17 hairpin parts 320b is an exemplary example. In FIG. 1, only
nine hairpin parts 320b of the second heat exchange part 32 disposed on a first side of the
fin group 321 in the width direction D3 are illustrated. The remaining eight hairpin
parts 320b are disposed on a second side of the fin group 321 in the width direction D3 to
connect end portions of the adjacent straight tube parts 320a on a second side in the
width direction D3 so that the refrigerant sequentially flows through the straight tube
parts 320a.
[0040] The refrigerant that has flowed into one straight tube part 320a flows through the
one straight tube part 320a in the width direction D3, and then flows into another straight
tube part 320a adjacent thereto through the hairpin part 320b. This flow of the
refrigerant is sequentially repeated, and thereby the refrigerant circulates through the
straight tube parts 320a and the hairpin parts 320b of the heat transfer tube 320 in the
second heat exchange part 32. Cold heat of the refrigerant is conducted to the fins 321a
of the second heat exchange part 32 via tube walls of the straight tube parts 320a.
[0041] The third heat exchange part 33 is placed in the housing space R so as to be
further from the mounting surface 11 than the fan 2 in the installation direction D1. The third heat exchange part 33 includes a fin group 331 and a heat transfer tube 330.
[0042] The fin group 331 is formed by a plurality of fins 331a extending in a direction
intersecting the width direction D3 and disposed at regular intervals in the width
directionD3. The fins 331a are formed of a metal such as aluminum.
[0043] The fin group 331 of the third heat exchange part 33 and the fin group 321 of the
second heat exchange part 32 are integrally fixed by a connection member connecting
them in the vertical direction D2. The positional relationship between the second heat
exchange part 32 and the third heat exchange part 33 is defined by the connection
member.
[0044] The heat transfer tube 330 is a tube formed of a metal such as copper through
which the refrigerant flows. The heat transfer tube 330 includes a plurality of straight
tube parts 330a and a plurality of hairpin parts 330b.
[0045] The straight tube parts 330a are cylindrical tubes extending in the width
directionD3. The straight tube parts 330a extend to penetrate the fins 331a, which are
disposed in the width direction D3 in the fin group 331, in the width direction D3.
[0046] The hairpin parts 330b are tubes each connecting end portions in the width
direction D3 of the straight tube parts 330a adjacent to each other. The hairpin part
330b is a U-shaped bent tube that is curved so that a direction in which the refrigerant
flows in the straight tube part 330a is turned by 180°.
[0047] In the present embodiment, a configuration in which the heat transfer tube 330
includes eight straight tube parts 330a and seven hairpin parts 330b is an exemplary
example. In FIG. 1, only four hairpin parts 330b of the third heat exchange part 33
disposed on a first side of the fin group 331 in the width direction D3 are illustrated.
The remaining three hairpin parts 330b are disposed on a second side of the fin group
331 in the width direction D3 to connect end portions of the adjacent straight tube parts
330a on a second side in the width direction D3 so that the refrigerant sequentially flows
through the straight tube parts 330a.
[0048] The refrigerant that has flowed into one straight tube part 330a flows through the
one straight tube part 330a in the width direction D3, and then flows into another straight
tube part 330a adjacent thereto through the hairpin part 330b. This flow of the
refrigerant is sequentially repeated, and thereby the refrigerant circulates through the
straight tube parts 330a and the hairpin parts 330b of the heat transfer tube 330 in the
third heat exchange part 33. Cold heat of the refrigerant is conducted to the fins 331a of
the third heat exchange part 33 via tube walls of the straight tube parts 330a.
[0049] The fourth heat exchange part 34 is placed in the housing space R so as to be
below the fan 2 in the vertical direction D2 and further from the mounting surface 11
than the fan 2 in the installation direction D1. The fourth heat exchange part 34
includes a fin group 341 and a heat transfer tube 340.
[0050] The fin group 341 is formed by a plurality of fins 341a extending in a direction
intersecting the width direction D3 and disposed at regular intervals in the width
directionD3. The fins 341a are formed of a metal such as aluminum.
[0051] The fin group 341 of the fourth heat exchange part 34 and the fin group 331 of
the third heat exchange part 33 are integrally fixed by a connection member connecting
them in the vertical direction D2. The positional relationship between the third heat
exchange part 33 and the fourth heat exchange part 34 is defined by the connection
member.
[0052] The heat transfer tube 340 is a tube formed of a metal such as copper through
which the refrigerant flows. The heat transfer tube 340 includes a plurality of straight
tube parts 340a and a plurality of hairpin parts 340b.
[0053] The straight tube parts 340a are cylindrical tubes extending in the width directionD3. The straight tube parts 340a extend to penetrate the fins 341a, which are disposed in the width direction D3 in the fin group 341, in the width direction D3.
[0054] The hairpin parts 340b are tubes each connecting end portions in the width
direction D3 of the straight tube parts 340a adjacent to each other. The hairpin part
340b is a U-shaped bent tube that is curved so that a direction in which the refrigerant
flows in the straight tube part 340a is turned by 180.
[0055] In the present embodiment, a configuration in which the heat transfer tube 340
includes four straight tube parts 340a and three hairpin parts 340b is an exemplary
example. In FIG. 1, only two hairpin parts 340b of the fourth heat exchange part 34
disposed on a first side of the fin group 341 in the width direction D3 are illustrated.
The remaining one hairpin part 340b is disposed on a second side of the fin group 341 in
the width direction D3 to connect end portions of the adjacent straight tube parts 340a on
a second side in the width direction D3 so that the refrigerant sequentially flows through
the straight tube parts 340a.
[0056] The refrigerant that has flowed into one straight tube part 340a flows through the
one straight tube part 340a in the width direction D3, and then flows into another straight
tube part 340a adjacent thereto through the hairpin part 340b. This flow of the
refrigerant is sequentially repeated, and thereby the refrigerant circulates through the
straight tube parts 340a and the hairpin parts 340b of the heat transfer tube 340 in the
fourth heat exchange part 34. Cold heat of the refrigerant is conducted to the fins 341a
of the fourth heat exchange part 34 via tube walls of the straight tube parts 340a.
[0057] (Heat exchanger fixing plate)
The heat exchanger fixing plate 300 fixes the heat exchanger main body 30 to
the casing 1 in the casing 1 (in the housing space R). The heat exchanger fixing plate
300 includes a fixing plate main body 301, a cover 302 and a tying member 306.
[0058] (Fixing plate main body)
The fixing plate main body 301 is a plate-shaped member that extends in a
direction intersecting the width direction D3. The fixing plate main body 301 is fixed to
the casing 1 on a first side in the width direction D3 with respect to thefin groups 311,
321, 331 and 341 of the heat exchange parts (the first heat exchange part 31 to the fourth
heat exchange part 34) of the heat exchanger main body 30.
[0059] That is, the fin groups 311, 321, 331 and 341 of the heat exchange parts (the first
heat exchange part 31 to the fourth heat exchange part 34) are disposed on a second side
of the fixing plate main body 301 in the width direction D3 while they are adjacent to the
fixing plate main body 301. The fixing plate main body 301 is formed of a material
having flexibility such as, for example, a synthetic resin that is softer than the heat
transfer tubes 310, 320, 330 and 340.
[0060] A plurality of insertion holes 301h through which the hairpin parts 310b, 320b,
330b and 340b of the heat exchange parts (the first heat exchange part 31 to the fourth
heat exchange part 34) of the heat exchanger main body 30 can be inserted in the width
direction D3 are formed in the fixing plate main body 301. The fixing plate main body
301 has the insertion holes 301h equal in number to the hairpin parts 310b, 320b, 330b
and 340b of the heat exchanger main body 30.
[0061] The hairpin parts 310b, 320b, 330b and 340b are inserted through the insertion
holes 301h of the fixing plate main body 301, and thereby the heat exchanger main body
30 is fixedly supported. In other words, the fixing plate main body 301 fixedly supports
the heat exchanger main body 30 in a cantilevered manner. The hairpin parts 310b,
320b, 330b and 340b protrude from the fixing plate main body 301 to a first side in the
width direction D3 when they are inserted through the insertion holes 301h.
[0062] (Cover)
The cover 302 is a member provided integrally with the fixing plate main body
301 and configured to cover each of the hairpin parts 320b and 330b which are part of the
plurality of hairpin parts 31Ob, 320b, 330b and 340b protruding from the fixing plate
main body 301 to a first side in the width direction D3.
[0063] The covers 302 of the present embodiment cover one of the hairpin parts 320b
of the heat transfer tube 320 of the second heat exchange part 32, which is closer to the
upper surface 12 than the other ones in the vertical direction D2, and one of the hairpin
parts 330b of the heat transfer tube 330 of the third heat exchange part 33, which is
further from the fan 2 than the other ones in the installation direction D1 and closer to the
upper surface 12 than the other ones in the vertical direction D2. The cover 302 is
formed of the same material as that of the fixing plate main body 301.
[0064] Hereinafter, a configuration of the cover 302 will be described by taking the
cover 302 that covers the hairpin part 330b of the heat transfer tube 330 in the third heat
exchange part 33 as an example.
As illustrated in FIG. 2, the cover 302 includes a topside part 303 and a side wall
part 304.
[0065] An inside surface of the topside part 303 faces top of the hairpin part 330b in the
width direction D3.
The side wall part 304 extends from the topside part 303 in the width direction
D3 and is in contact with the fixing plate main body 301 in a state of surrounding the
hairpin part 330b. The side wall part 304 includes a pair of first side wall parts 304a
and a pair of second side wall parts 304b.
[0066] The pair of first side wall parts 304a are disposed to interpose the hairpin part
330b from both sides in a direction Po perpendicular to a virtual plane X extending along
the hairpin part 330b. That is, the first side wall parts 304a are adjacent to each other in the direction Po so as to interpose the hairpin part 330b therebetween. A first through hole 304h passing through an inner arc of the hairpin part 330b is formed in the cover
302. Therefore, the first side wall parts 304a each have an opening of the first through
hole 304h.
[0067] An opening area of the first through hole 304h when viewed in the direction
perpendicular to the vertical plane X is larger than that of an inner arc of the hairpin part
330b when viewed in the same direction. The inner arc of the hairpin part 330b when
viewed in the direction perpendicular to the vertical plane X is positioned on an inner
side of the opening of the first through hole 304h when viewed in the same direction.
[0068] The pair of second side wall parts 304b are disposed to interpose the hairpin part
330b from both sides in a direction Pi parallel to the virtual plane X. That is, the second
side wall parts 304b are adjacent to each other in the direction Pi so as to interpose the
hairpin part 330b therebetween. The second side wall parts 304b are both integrally
fixed to the first side wall parts 304a.
[0069] Here, as illustrated also in FIG. 3, the top side part 303, which is adjacent to the
top of the hairpin part 330b in the width direction D3, has a second through hole 303h
passing through the top side part 303 in the width direction D3. The opening area of the
second through hole 303h when viewed from a first side in the width direction D3 is
smaller than that of an outer edge of the hairpin part 330b when viewed from a first side
in the width direction D3. Therefore, the outer edge of the hairpin part 330b is hidden
by the topside part 303 when viewed from a first side in the width direction D3.
[0070] (Tying member)
The tying member 306 is tying the hairpin part 330b and the cover 302 together
by being wound over the inner arc of the hairpin part 330b and the topside part 303,
which is an end portion of the cover 302 on a first side in the width direction D3, through the first through hole 304h.
[0071] The cover 302 is pressed against the fixing plate main body 301 by the tying
member 306 that ties the topside part 303 and the hairpin part 330b together. As a
specific example of the tying member 306, the tying band of INSULOK (registered
trademark) manufactured by HellamanTyton Co., Ltd. can be mentioned.
[0072] (Filter part)
As illustrated in FIG. 1, the filter part 4 removes impurities such as dust
contained in the air suctioned from the suction port. The filter part 4 is placed above the
heat exchanger 3 in the vertical direction D2 in the housing space R. That is, the filter
part 4 is positioned between the casing 1 and the heat exchanger 3. Therefore, the filter
part 4 supplies the air from which impurities such as dust are removed to the heat
exchanger3.
[0073] (Operation and effects)
When the refrigerant flows through the heat transfer tubes 310, 320, 330 and
340, air in the vicinity of the heat transfer tubes 310, 320, 330 and 340 is cooled by cold
heat of the refrigerant, and air in the vicinity of the fin groups 311, 321, 331 and 341 to
which the cold heat of the refrigerant can be conducted via the heat transfer tubes 310,
320, 330 and 340 is cooled. When the air in the vicinity of the heat transfer tubes 310,
320, 330 and 340 and in the vicinity the fin groups 311, 321, 331 and 341 is cooled,
moisture contained in the air is condensed (causes dew condensation) and generates
droplets.
[0074] Also, when vibration due to the circulation of the refrigerant occurs in the heat
transfer tubes 310, 320, 330 and 340, or when maintenance of the indoor unit 100 is
performed, a force may act from the hairpin parts 320b and 330b toward the cover 302.
[0075] According to the above-described configuration, water vapor in the condensed air due to the cold heat of the refrigerant flowing in the hairpin parts 320b and 330b of the heat transfer tubes 320 and 330 can be diffused to the outside of the cover 302 through the first through hole 304h of the cover 302. Therefore, the moisture in the condensed air staying inside the cover 302 can be suppressed.
[0076] Also, the rigidity of the cover 302 reduces due to the cover 302 having the first
through hole 304h. Thereby, an elastic force of the entire cover 302 increases.
Therefore, for example, even if a force directed from the hairpin parts 320b and 330b
toward the cover 302 acts from the hairpin parts 320b and 330b, the hairpin parts 320b
and 330b colliding with other members can be suppressed.
[0077] Also, according to the above-described configuration, water vapor in the air
condensed by the cold heat of the refrigerant flowing through the hairpin parts 320b and
330b can be diffused to the outside of the cover 302 through the second through hole
303h of the topside part 303.
[0078] Also, according to the above-described configuration, since the cover 302 has
the through holes interposing the hairpin parts 320b and 330b from both sides in the
direction Po perpendicular to the virtual plane X extending along the hairpin parts 320b
and 330b, the rigidity of the entire cover 302 can be reduced more uniformly.
Therefore, the elastic force of the entire cover 302 can be increased in a more balanced
manner.
[0079] Also, according to the above-described configuration, since the tying member
306 ties the hairpin parts 320b and 330b and the cover 302 together, the cover 302 is
pressed against the fixing plate main body 301. Therefore, for example, even if an
external force is applied to the cover 302, the cover 302 being buckled can be suppressed.
[0080] Also, for example, when compared to a configuration in which the fixing plate
main body 301 is directly tied to the hairpin parts 320b and 330b, a force of pulling the fixing plate main body 301 toward a first side in the width direction D3 does not act because the cover 302 is configured to be pressed against the fixing plate main body 301.
Therefore, generation of gaps between the fixing plate main body 301 and the fins 311a,
321a, 331a and 341a positioned on the most a first side in the width direction D3 of the
fin groups 311, 321, 331 and 341 can be suppressed.
[0081] Also, according to the above-described configuration, visibility of the inside of
the cover 302 through the second through hole 303h can be improved. Therefore, a
tying operation for tying the cover 302 and the hairpin parts 320b and 330b together at
the time of manufacturing the indoor unit 100, assembly such as maintenance, or the like
can be facilitated.
[0082] <Second embodiment>
A heat exchanger fixing plate 300 according to a second embodiment of the
present disclosure will be described below with reference to FIG. 4. The heat
exchanger fixing plate 300 described in the second embodiment is partially different in
configuration from the heat exchanger fixing plate 300 of the first embodiment.
Components the same as those in the first embodiment will be denoted by the same
reference signs and detailed description thereof will be omitted.
[0083] (Heat exchanger fixing plate)
The heat exchanger fixing plate 300 fixes a heat exchanger main body 30 to a
casing 1 inside the casing 1 (inside a housing space R). The heat exchanger fixing plate
300 includes a fixing plate main body 301, a cover 302a and a tying member 306. The
fixing plate main body 301 of the present embodiment has the same configuration as the
fixing plate main body 301 described in the first embodiment.
[0084] (Cover)
The cover 302a is provided integrally with the fixing plate main body 301, and covers hairpin parts 320b and 330b, which are part of a plurality of hairpin parts 31Ob,
320b, 330b and 340b protruding from the fixing plate main body 301 to a first side in a
width direction D3, from a first side in the width direction D3.
[0085] Hereinafter, a configuration of the cover 302a will be described by taking the
cover 302a that covers the hairpin part 330b of a heat transfer tube 330 in a third heat
exchange part 33 as an example.
As illustrated in FIG. 4, the cover 302a includes a topside part 303a and a
connection part 305.
[0086] An inside surface of the topside part 303a faces top of the hairpin part 330b in
the width direction D3.
Here, the area of a surface of the topside part 303a facing a first side in the width
direction D3 when viewed from a first side in the width direction D3 is larger than that of
an outer edge of the hairpin part 330b when viewed from a first side in the width
direction D3, and the outer edge of the hairpin part 330b when viewed from a first side in
the width direction D3 is hidden by the topside part 303a.
[0087] The connection part 305 extends from the fixing plate main body 301 to a first
side in the width direction D3 and has a columnar shape that supports the topside part
303a.
Therefore, in the present embodiment, the topside part 303a and the connection
part 305 constitute the eave-shaped cover 302a that covers the hairpin part 330b from a
first side in the width direction D3.
[0088] (Tying member)
The tying member 306 is a member capable of tying the hairpin part 330b and
the cover 302a together by being wound over the inside of a curve of the hairpin part
330b and a surface of the topside part 303a of the cover 302a facing a first side in the width direction D3 through a first through hole 304h.
[0089] (Operation and effects)
According to the above-described configuration, the same operation and effects
as those of the first embodiment can be obtained. Also, since the connection part 305
has a configuration having a columnar shape that extends from the fixing plate main
body 301 to a first side in the width direction D3 and supports the topside part 303a,
compared to the configuration of the side wall part 304 surrounding the hairpin parts
320b and 330b described in the first embodiment, moisture does not stay on the cover
302a when moisture contained in the air condenses.
[0090] <Other embodiments>
While embodiments of the present disclosure have been described in detail with
reference to the drawings, the specific configurations are not limited to the embodiments,
and additions, omissions, substitutions, and other changes to the configurations can be
made within a scope not departing from the gist of the present disclosure. Also, the
present disclosure is not to be considered as being limited by the embodiments and is
only limited by the scope of the claims.
[0091] Further, in the above-described embodiment, the numbers of the straight tube
parts 310a, 320a, 330a and 340a, and the hairpin parts 310b, 320b, 330b and 340b of the
heat transfer tubes 310, 320, 330 and 340 in each of the heat exchange parts (the first heat
exchange part 31 to the fourth heat exchange part 34) are not limited to the above
described numbers.
[0092] Also, the above-described embodiment may have a configuration in which all
the hairpin parts 310b, 320b, 330b and 340b of the heat transfer tubes 310, 320, 330 and
340 are covered by the cover 302 or 302a. Also, the cover 302 or 302a may be
configured to cover only one hairpin part 31Ob, 320b, 330b, or 340b.
[0093] Also, in the above-described embodiment, the covers 302 and 302a may be
formed of a material different from that of the fixing plate main body 301.
[0094] Also, in the above-described embodiment, a configuration of the heat exchanger
fixing plate 300 that fixes the heat exchanger main body 30 to the casing 1 in the casing 1
of the indoor unit 100 has been described, but the present disclosure is not limited to the
indoorunit100. The heat exchanger fixing plate 300 may fix the heat exchanger main
body to, for example, a casing inside the casing of an outdoor unit.
[0095] Also, the tying member 306 in the above-described embodiment is not limited to
a tying band. The tying member 306 may be formed of a material such as a thread or a
wire as long as it is a member capable of tying the hairpin part 31Ob, 320b, 330b, or 340b
and the cover 302 or 302a together through the first through hole 304h.
[0096] <Appendix>
The heat exchanger fixing plate, the heat exchanger and the indoor unit
described in each embodiment are understood, for example, as follows.
[0097] (1) A first aspect of the heat exchanger fixing plate 300 is for fixing a heat
exchanger main body 30 including heat transfer tubes 310, 320, 330 and 340 through
which a refrigerant is flowed to an inside of a casing of an indoor unit, the heat transfer
tube are each formed of a plurality of straight tube parts 310a, 320a, 330a and 340a
extending in the width direction D3 of the casing 1 and a plurality of hairpin parts 31Ob,
320b, 330b and 340b connecting adjacent end portions of the straight tube parts 310a,
320a, 330a and 340a. The heat exchanger fixing plate 300 includes: a fixing plate main
body 301 extending in a direction intersecting the width direction D3 of the casing 1 and
having a plurality of insertion holes 301h through which the hairpin parts 310b, 320b,
330b and 340b are allowed to be inserted toward a first side in the width direction D3;
and a cover 302 which is installed on the fixing plate main body 301 to cover the hairpin parts 31Ob, 320b, 330b and 340b protruding from the fixing plate main body 301 toward a first side in the width direction D3 and having a first through hole 304h an inner arc of each of the hairpin parts 310b, 320b, 330b and 340b.
[0098] Thereby, water vapor in condensed air due to cold heat of the refrigerant flowing
in the hairpin parts 31Ob, 320b, 330b and 340b can be diffused to the outside of the cover
302 through the first through hole 304h of the cover 302. Also, since rigidity of the
cover 302 is reduced due to the cover 302 having the first through hole 304h, the elastic
force of the entire cover 302 can be increased.
[0099] (2) In a second aspect of the heat exchanger fixing plate 300 according to the
first aspect of the heat exchanger fixing plate 300, the cover 302 may include a second
through hole 303h which is formed in a topside part of the cover 302 corresponding to a
top of each of the hairpin parts 31Ob, 320b, 330b and 340b and passing through the
topside part of the cover 302 in the width direction D3, wherein an opening area of the
second through hole may be smaller than that of a profile of each of the hairpin parts
31Ob, 320b, 330b and 340b when viewed from a first side in the width direction D3.
[0100] Thereby, water vapor in the condensed air due to the cold heat of the refrigerant
flowing in the hairpin parts 31Ob, 320b, 330b and 340b can be diffused to the outside of
the cover 302 through the second through hole 303h.
[0101] (3) Ina third aspect of the heat exchanger fixing plate 300 according to the first
or second aspect of the heat exchanger fixing plate 300, openings of first through hole
304h may be formed on both side parts of the cover 302 interposing each of the hairpin
parts 31Ob, 320b, 330b and 340b therebetween.
[0102] Thereby, rigidity of the entire cover 302 can be uniformly reduced.
[0103] (4)A fourth aspect of the heat exchanger fixing plate 300 according to the third
aspect of the heat exchanger fixing plate 300 may further include a tying member 306 tying each of the hairpin parts 31Ob, 320b, 330b and 340b to the cover 302 by being wound over the inner arc of each of the hairpin parts 31Ob, 320b, 330b and 340b and a topside part of the cover 302 corresponding to a top of each of the hairpin parts 31Ob,
320b, 330b and 340b through the first through hole 304h.
[0104] Thereby, the cover 302 can be pressed against the fixing plate main body 301.
[0105] (5)A fifth aspect of the heat exchanger fixing plate 300 is for fixing a heat
exchanger main body 30 including heat transfer tubes 310, 320, 330 and 340 through
which a refrigerant is flowed to an inside of a casing 1 of an indoor unit 100, the heat
transfer tubes 310, 320, 330 and 340 are each formed of a plurality of straight tube parts
310a, 320a, 330a and 340a extending in the width direction D3 of the casing 1 and a
plurality of hairpin parts 31Ob, 320b, 330b and 340b connecting adjacent end portions of
the straight tube parts 310a, 320a, 330a and 340a. The heat exchanger fixing plate 300
includes: a fixing plate main body 301 extending in a direction intersecting the width
direction D3 of the casing 1 and having a plurality of insertion holes 301h through which
the hairpin parts 31Ob, 320b, 330b and 340b are allowed to be inserted toward a first side
in the width direction D3; a cover 302a which is installed on the fixing plate main body
301 and having a topside part 303 or 303a facing the hairpin parts 31Ob, 320b, 330b and
340b from a first side in the width direction D3; and a tying member 306 tying each of
the hairpin parts 31Ob, 320b, 330b and 340b and the cover 302 together by being wound
over an inner arc of each of the hairpin parts 31Ob, 320b, 330b and 340b and the topside
part303 or303aofthe cover302.
[0106] Thereby, the same operation as described above can be obtained. Also,when
moisture contained in the air condenses, no moisture is stayed on the cover 302a.
[0107] (6)A sixth aspect of the heat exchanger 3 includes: anyone of the first to fifth
aspects of the heat exchanger fixing plate 300; and the heat exchanger main body 30 which is fixed to the inside of the casing 1 via the heat exchanger fixing plate 300, wherein the heat exchanger main body 300 includes fin groups 311, 321, 331 and 341 adjacent to the fixing plate main body 301 in the width direction D3 and formed of a plurality of fins 311a, 321a, 331a and 341a extending in a direction intersecting the width direction D3 and aligned in the width direction D3.
[0108] Thereby, since the cover 302 or 302a is pressed against the fixing plate main
body 301, a force of pulling the fixing plate main body 301 toward a first side in the
width direction D3 is not generated when compared to a configuration in which the
fixing plate main body 301 is directly tied to the cover 302 or 302a.
[0109] (7)A seventh aspect of the indoor unit 100 includes: a casing 1; a fan 2
accommodated in the casing 1 and introducing air into the casing 1; and the heat
exchanger 3 of (6) accommodated in the casing 1, wherein the heat exchanger 3 is
configured to exchange heat between the air and the refrigerant.
[0110] 1 Casing
2 Fan
3 Heat exchanger
4 Filter part
11 Mounting surface
12 Upper surface
13 Lower surface
14 Front surface
30 Heat exchanger main body
31 First heat exchange part
32 Second heat exchange part
33 Third heat exchange part
34 Fourth heat exchange part
100 Indoor unit
300 Heat exchanger fixing plate
301 Fixing plate main body
301h Insertion hole
302 Cover
303, 303a Topside part
303h Second through hole
304 Side wall part
304a First side wall part
304b Second side wall part
304h First through hole
305 Connection part
306 Tying member
310, 320, 330, 340 Heat transfer tube
310a, 320a, 330a, 340a Straight tube part
31Ob, 320b, 330b, 340b Hairpin part
311, 321, 331, 341 Fin group
311a, 321a, 331a, 341a Fin
D1 Installation direction
D2 Vertical direction
D3 Width direction
01 First axis
02 Second axis
Pi In-plane direction
Po Out-of-plane direction
R Housing space
W Wall surface
X Virtual surface
Claims (7)
1. A heat exchanger fixing plate for fixing a heat exchanger main body including a heat
transfer tube through which a refrigerant is flowed to an inside of a casing of an indoor
unit, the heat transfer tube is formed of a plurality of straight tube parts extending in the
width direction of the casing and a plurality of curved hairpin parts each connecting end
portions of the straight tube parts adjacent to each other, the heat exchanger fixing plate
comprising:
a fixing plate main body extending in a direction intersecting the width direction
of the casing and having a plurality of insertion holes through which the hairpin parts are
allowed to be inserted toward one side in the width direction; and
a cover which is installed on the fixing plate main body to cover the hairpin part
protruding from the fixing plate main body toward one side in the width direction and
having a first through hole passing through an inner arc of the hairpin part.
2. The heat exchanger fixing plate according to claim 1, wherein the cover includes a
second through hole which is formed in a topside part of the cover corresponding to a top
of the hairpin part and passing through the topside part of the cover in the width
direction, wherein an opening area of the second through hole is smaller than that of a
profile of the hairpin part when viewed from one side in the width direction.
3. The heat exchanger fixing plate according to claim 1 or 2, wherein openings of the
first through hole are formed on both side parts of the cover interposing the hairpin part
therebetween.
4. The heat exchanger fixing plate according to claim 3, further comprising a tying
member tying the hairpin part and the cover together by being wound over the inner arc
of the hairpin part and a topside part of the cover corresponding to a top of the hairpin
part through the first through hole.
5. A heat exchanger fixing plate for fixing a heat exchanger main body including a heat
transfer tube through which a refrigerant is flowed to an inside of a casing of an indoor
unit, the heat transfer tube is formed of a plurality of straight tube parts extending in the
width direction of the casing and a plurality of curved hairpin parts each connecting end
portions of the straight tube parts adjacent to each other, the heat exchanger fixing plate
comprising:
a fixing plate main body extending in a direction intersecting the width direction
of the casing and having a plurality of insertion holes through which the hairpin parts are
allowed to be inserted toward one side in the width direction;
a cover which is installed on the fixing plate main body and including a topside
part facing the hairpin part in the width direction; and
a tying member tying the hairpin part and the cover together by being wound
over an inner arc of the hairpin part and the topside part of the cover.
6. A heat exchanger comprising:
the heat exchanger fixing plate according to any one of claims I to 5; and
the heat exchanger main body which is fixed to the inside of the casing via the
heat exchanger fixing plate, wherein the heat exchanger main body includes a fin group
adjacent to the fixing plate main body in the width direction and formed of a plurality of
fins each extending in a direction intersecting the width direction and aligned in the width direction.
7. An indoor unit comprising:
a casing;
a fan accommodated in the casing and introducing air into the casing; and
the heat exchanger according to claim 6 which is accommodated in the casing,
wherein the heat exchanger is configured to exchange heat between the air and the
refrigerant.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021185757A JP2023072984A (en) | 2021-11-15 | 2021-11-15 | Heat exchanger fixing plate, heat exchanger, and indoor unit |
| JP2021-185757 | 2021-11-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2022271372A1 true AU2022271372A1 (en) | 2023-06-01 |
| AU2022271372B2 AU2022271372B2 (en) | 2024-06-13 |
Family
ID=84332224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2022271372A Active AU2022271372B2 (en) | 2021-11-15 | 2022-11-14 | Heat exchanger fixing plate, heat exchanger and indoor unit |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4180728A1 (en) |
| JP (1) | JP2023072984A (en) |
| AU (1) | AU2022271372B2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006200760A (en) * | 2005-01-18 | 2006-08-03 | Matsushita Electric Ind Co Ltd | Heat exchanger for air conditioner |
| JP5761149B2 (en) | 2012-09-28 | 2015-08-12 | ダイキン工業株式会社 | Heat exchanger fixing plate and indoor unit |
| JP6336321B2 (en) * | 2014-04-21 | 2018-06-06 | 三菱重工サーマルシステムズ株式会社 | Air conditioner |
| JP2017096526A (en) * | 2015-11-19 | 2017-06-01 | シャープ株式会社 | Blowoff system and heat transfer tube holding system |
-
2021
- 2021-11-15 JP JP2021185757A patent/JP2023072984A/en active Pending
-
2022
- 2022-11-14 AU AU2022271372A patent/AU2022271372B2/en active Active
- 2022-11-14 EP EP22207282.9A patent/EP4180728A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AU2022271372B2 (en) | 2024-06-13 |
| EP4180728A1 (en) | 2023-05-17 |
| JP2023072984A (en) | 2023-05-25 |
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