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WO2025196996A1 - Échangeur de chaleur et climatiseur - Google Patents

Échangeur de chaleur et climatiseur

Info

Publication number
WO2025196996A1
WO2025196996A1 PCT/JP2024/010902 JP2024010902W WO2025196996A1 WO 2025196996 A1 WO2025196996 A1 WO 2025196996A1 JP 2024010902 W JP2024010902 W JP 2024010902W WO 2025196996 A1 WO2025196996 A1 WO 2025196996A1
Authority
WO
WIPO (PCT)
Prior art keywords
louver
heat exchanger
fins
flat tubes
flat
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.)
Pending
Application number
PCT/JP2024/010902
Other languages
English (en)
Japanese (ja)
Inventor
七海 岸田
洋次 尾中
理人 足立
暁 八柳
崇志 中島
祐基 中尾
篤史 岐部
哲二 七種
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2024563063A priority Critical patent/JP7675951B1/ja
Priority to PCT/JP2024/010902 priority patent/WO2025196996A1/fr
Publication of WO2025196996A1 publication Critical patent/WO2025196996A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F28D1/053—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 straight
    • 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
    • F28F1/14—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 longitudinally
    • F28F1/20—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 longitudinally the means being attachable to the element
    • 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
    • F28F1/30—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 being attachable to the element

Definitions

  • This disclosure relates to a heat exchanger and air conditioning device equipped with flat tubes and fins.
  • Patent Document 1 discloses a heat exchanger equipped with multiple flat tubes and corrugated fins with multiple louvers.
  • Patent Document 1 discloses a corrugated fin heat exchanger in which multiple slit drainage holes are formed close together, thereby improving heat transfer performance and fin strength while also smoothly draining condensed water that adheres to the fin surfaces when used as an evaporator.
  • Patent Document 1 also aims to improve heat exchange efficiency by improving drainage.
  • This disclosure has been made to solve the above-mentioned problems, and provides a heat exchanger and air conditioning device that prevents water from accumulating at the ends of louvers.
  • the heat exchanger disclosed herein comprises a plurality of flat tubes through which a refrigerant flows, and a plurality of fins disposed between the flat tubes to transfer heat from the refrigerant flowing through the flat tubes.
  • the fins have a planar portion with an opening formed in a portion thereof, and louvers that open and close the opening in the planar portion.
  • the planar portion has a louver-removal space cut out at a position connected to the end of the louver.
  • a louver removal space is formed by cutting out the flat surface at the position where the end of the louver is connected. As a result, water that accumulates at the end of the louver is discharged through the louver removal space. This prevents water from accumulating at the end of the louver.
  • FIG. 1 is a circuit diagram showing an air conditioning apparatus according to a first embodiment.
  • FIG. 1 is a front view showing a heat exchanger according to a first embodiment.
  • 1 is a perspective view showing a heat exchanger according to a first embodiment.
  • FIG. FIG. 2 is a schematic diagram showing a fin according to the first embodiment.
  • FIG. 2 is a top view showing the heat exchanger according to the first embodiment.
  • 1 is a side view showing a heat exchanger according to a first embodiment.
  • FIG. FIG. 10 is a top view showing a heat exchanger according to a modified example of the first embodiment.
  • FIG. 10 is a perspective view showing a heat exchanger according to a second embodiment.
  • FIG. 10 is a top view showing a heat exchanger according to a third embodiment.
  • Fig. 1 is a circuit diagram showing an air conditioner 1 pertaining to embodiment 1.
  • the air conditioner 1 is a device that conditions the air in an indoor space, and includes an outdoor unit 2 and an indoor unit 3 connected to the outdoor unit 2.
  • the outdoor unit 2 is provided with a compressor 6, a flow path switching device 7, a heat exchanger 8, an outdoor blower 9, and an expansion section 10.
  • the indoor unit 3 is provided with an indoor heat exchanger 11 and an indoor blower 12.
  • the compressor 6, flow path switching device 7, heat exchanger 8, expansion section 10, and indoor heat exchanger 11 are connected by refrigerant piping 5 to form the refrigerant circuit 4 through which the refrigerant, which is a working gas, flows.
  • the compressor 6 draws in refrigerant in a low-temperature, low-pressure state, compresses it, and discharges it as high-temperature, high-pressure refrigerant.
  • the flow path switching device 7 switches the direction in which the refrigerant flows in the refrigerant circuit 4, and is, for example, a four-way valve.
  • the heat exchanger 8 exchanges heat between, for example, outdoor air and the refrigerant.
  • the heat exchanger 8 acts as a condenser during cooling operation and as an evaporator during heating operation.
  • the outdoor blower 9 is a device that sends outdoor air to the heat exchanger 8.
  • the expansion section 10 is a pressure reducing valve or expansion valve that reduces the pressure of the refrigerant to expand it.
  • the expansion section 10 is, for example, an electronic expansion valve whose opening is adjustable.
  • the indoor heat exchanger 11 is, for example, a device that exchanges heat between the indoor air and the refrigerant.
  • the indoor heat exchanger 11 acts as an evaporator during cooling operation and as a condenser during heating operation.
  • the indoor blower 12 is a device that sends indoor air to the indoor heat exchanger 11.
  • cooling operation refrigerant drawn into the compressor 6 is compressed by the compressor 6 and discharged in a high-temperature, high-pressure gas state.
  • the high-temperature, high-pressure gas refrigerant discharged from the compressor 6 passes through the flow switching device 7 and flows into the heat exchanger 8, which functions as a condenser.
  • the heat exchanger 8 the refrigerant exchanges heat with outdoor air sent by the outdoor fan 9, condensing and liquefying.
  • the condensed liquid refrigerant flows into the expansion section 10, where it expands and is decompressed to become a low-temperature, low-pressure, two-phase gas-liquid refrigerant.
  • the two-phase gas-liquid refrigerant then flows into the indoor heat exchanger 11, which functions as an evaporator.
  • the indoor heat exchanger 11 the refrigerant exchanges heat with indoor air sent by the indoor fan 12, evaporating and gasifying. At this time, the indoor air is cooled, and cooling is performed in the room.
  • the evaporated refrigerant in a low-temperature, low-pressure gas state passes through the flow switching device 7 and is sucked into the compressor 6 .
  • heating operation refrigerant is drawn into the compressor 6, compressed by the compressor 6, and discharged in a high-temperature, high-pressure gas state.
  • the high-temperature, high-pressure gas refrigerant discharged from the compressor 6 passes through the flow switching device 7 and flows into the indoor heat exchanger 11, which functions as a condenser.
  • the indoor heat exchanger 11 the refrigerant exchanges heat with indoor air sent by the indoor blower 12, condensing and liquefying. At this time, the indoor air is heated, and heating is performed in the room.
  • the condensed liquid refrigerant flows into the expansion section 10, where it expands and decompresses to become a low-temperature, low-pressure, two-phase gas-liquid refrigerant.
  • the two-phase gas-liquid refrigerant then flows into the heat exchanger 8, which functions as an evaporator.
  • the heat exchanger 8 the refrigerant exchanges heat with outdoor air sent by the outdoor blower 9, evaporating and gasifying.
  • the evaporated low-temperature, low-pressure gas refrigerant passes through the flow switching device 7 and is drawn into the compressor 6.
  • the air conditioning device 1 does not have to have a flow path switching device 7. In this case, the air conditioning device 1 will be a dedicated cooling or heating device.
  • FIG. 2 is a front view showing the heat exchanger 8 according to the first embodiment.
  • the heat exchanger 8 will be described in detail.
  • the heat exchanger 8 is, for example, a parallel flow type heat exchanger.
  • the heat exchanger 8 may also be a fin tube type heat exchanger.
  • the heat exchanger 8 includes flat tubes 20, fins 30, and a header 40.
  • the flat tubes 20 are tubes through which a refrigerant flows, and are arranged in multiple rows.
  • the multiple flat tubes 20 are made of, for example, aluminum or an aluminum alloy.
  • the multiple flat tubes 20 are spaced apart so that their longitudinal axes face each other, and fins 30 are provided between the flat tubes 20.
  • the flat tubes 20 may also be made of a clad material with an aluminum core.
  • the flat tubes 20 have, for example, multiple flow paths formed in a row through which the refrigerant flows.
  • the flat tubes 20 extend with their height direction as the longitudinal direction.
  • the fins 30 are components that transfer heat from the refrigerant flowing through the flat tubes 20, and are, for example, corrugated fins that are bent and arranged between the flat tubes 20.
  • the fins 30 have inclined surfaces that are inclined with respect to the horizontal direction and are alternately folded. In other words, the fins 30 can be described as strip-shaped components that are alternately folded and arranged in multiple rows in the height direction. Between the fins 30 and the flat tubes 20, ventilation channels 31 are formed through which air flows.
  • the fins 30 are made of, for example, aluminum.
  • the fins 30 may also be plate fins.
  • the header 40 through which the refrigerant flows and which divides the refrigerant into the connected flat tubes 20, is made of, for example, aluminum. As described above, the header 40 may be made of the same material as the fins 30 and the flat tubes 20, or a different material.
  • the header 40 includes a header 40 that connects one end of the flat tubes 20 and a header 40 that connects the other end of the flat tubes 20.
  • the interior of the header 40 may be configured such that the space through which the refrigerant flows is partitioned by one or more partitions.
  • a refrigerant pipe 5 is connected to one of the headers 40, and the header 40 is connected to the flow path switching device 7 via the refrigerant pipe 5.
  • a refrigerant pipe 5 is connected to the other header 40, and the header 40 is connected to the expansion section 10 via the refrigerant pipe 5.
  • the header 40 may be made of the same material as the flat tubes 20.
  • Fig. 3 is a perspective view showing the heat exchanger 8 according to the first embodiment.
  • the fins 30 have a flat portion 32 and a plurality of louvers 33.
  • the flat portion 32 is a plate-shaped member that extends at an angle along the longitudinal direction of the flat tubes 20.
  • a rectangular opening 32a extending along the longitudinal direction of the flat tubes 20 is formed in part of the central portion of the flat portion 32, excluding both end portions adjacent to the flat tubes 20.
  • FIG. 4 is a schematic diagram showing a fin 30 according to the first embodiment.
  • the louvers 33 open and close the openings 32a formed in the flat surface portion 32.
  • a plurality of louvers 33 are provided for each opening 32a.
  • the louvers 33 are formed by cutting and raising portions of the flat surface portion 32, and are inclined in a side view. In a side view, one end of the louvers 33 is higher than the flat surface portion 32, and the other end is lower than the flat surface portion 32.
  • louver group 33a The plurality of louvers 33 that open and close one opening 32a is referred to as a louver group 33a.
  • louver removed space 34 A louver-removed space 34 is formed in the flat portion 32.
  • the louver-removed space 34 is formed by cutting out a portion of the flat portion 32 where the ends of the multiple louvers 33 are connected. While FIG. 3 illustrates an example in which the louver-removed space 34 is offset in the minor axis direction of the flat tube 20 with respect to the opening 32a formed in the flat portion 32, the space does not need to be offset, or the offset may vary.
  • the louver-removed space 34 is formed at the end of the opening 32a formed in the flat portion 32 in the major axis direction of the flat tube 20.
  • the louver-removed space 34 can be said to be a space in which a portion where the louvers 33 are provided (see the dashed line in FIG. 4 ), which would normally be half the length, is cut out.
  • FIG 5 is a top view showing a heat exchanger 8 according to embodiment 1.
  • the position of the louver removal spaces 34 in adjacent bent fins 30 in the vertical direction will be described.
  • the fin 30 on the left is the upper fin 30, the central fin 30 is the middle fin 30, and the fin 30 on the right is the lower fin 30.
  • the upper side is the upwind side and the lower side is the downwind side.
  • the louver removal spaces 34 are offset in the vertical direction.
  • Figure 5 illustrates an example in which the lengths of the flat tubes 20 in the minor axis direction in the louver removal spaces 34 are the same, but they may be different.
  • the offset of the louver removal spaces 34 may be periodic or non-periodic. If the louver removal spaces 34 are periodic, the manufacturing process is simplified.
  • FIG. 6 is a side view showing a heat exchanger 8 according to embodiment 1.
  • the louver-removed spaces 34 are misaligned in the height direction, as shown in Figure 6, water adhering to the fins 30 falls downward rather than remaining in one place. This makes it difficult for droplets 50 to remain on the fins 30. Note that drainage is further improved when the louver-removed spaces 34 reach the bottom of the sloped portion of the fins 30, where the fins 30 and flat tubes 20 are joined.
  • FIG. 7 is a top view showing a heat exchanger 8 according to a modified example of the first embodiment.
  • the longitudinal length of the fins 30 is significantly longer than the longitudinal length of the flat tubes 20, and the fins 30 protrude outward from both ends of the flat tubes 20.
  • one of the two louver-removed spaces 34 is formed in the fins 30 protruding outward from both ends of the flat tubes 20. In this way, the louver-removed space 34 does not have to face the flat tubes 20.
  • a louver removal space 34 is formed by cutting out the flat surface 32 at a position connected to the end of the louver 33. As a result, water that accumulates at the end of the louver 33 is discharged through the louver removal space 34. This prevents water from accumulating at the end of the louver 33.
  • the flat tubes 20 extend with their height as their longitudinal direction, and multiple fins 30 are arranged in the height direction, with the louver removal spaces 34 of the fins 30 arranged in the height direction being offset from one another in the height direction.
  • droplets adhering to the fins 30 fall through the louver removal spaces 34 located above, hit the flat surface 32 located below, flow along the inclined flat surface 32, and then fall through the louver removal spaces 34. In other words, droplets are less likely to remain on the fins 30.
  • Embodiment 2. 8 is a perspective view showing a heat exchanger 8 according to embodiment 2.
  • the dimensions of the louver-removed space 34 are specified.
  • parts common to embodiment 1 are assigned the same reference numerals and description thereof will be omitted, and the description will focus on differences from embodiment 1.
  • the longitudinal width T of the flat tubes 20 in the louver-removed space 34 is 1/3 to 2/3 of the width W of the louvers 33. This allows for improved drainage without impairing heat exchange capacity. In other words, it is possible to achieve both heat exchange capacity and drainage. Furthermore, it is even more preferable that the longitudinal width T of the flat tubes 20 in the louver-removed space 34 is 1/2 of the width W of the louvers 33. This simplifies the manufacturing process, as it is only necessary to remove the portion where the louvers 33 are to be installed, which would otherwise be half the length.
  • Embodiment 3. 9 is a top view showing a heat exchanger 8 according to embodiment 3.
  • Embodiment 3 differs from embodiments 1 and 2 in that slits 35 are formed in the fins 30.
  • parts common to embodiments 1 and 2 are denoted by the same reference numerals and description thereof will be omitted, and the following description will focus on the differences from embodiments 1 and 2.
  • the fin 30 has slits 35 formed therein to drain water that accumulates in the flat portion 32.
  • the slits 35 are not adjacent to the louvers 33.
  • Figure 9 illustrates a case in which multiple slits 35 are formed and, like the louver removal space 34, are offset in position in the height direction. Note that a single slit 35 may be formed, or the slits may be aligned in position in the height direction. In this way, in this third embodiment, slits 35 are formed in addition to the louver removal space 34, thereby further improving drainage performance.
  • Air conditioning unit 2. Outdoor unit, 3. Indoor unit, 4. Refrigerant circuit, 5. Refrigerant piping, 6. Compressor, 7. Flow path switching device, 8. Heat exchanger, 9. Outdoor blower, 10. Expansion section, 11. Indoor heat exchanger, 12. Indoor blower, 20. Flat tube, 30. Fin, 31. Ventilation duct, 32. Flat section, 32a. Opening, 33. Louver, 33a. Louver group, 34. Louver removal space, 35. Slit, 40. Header, 50. Droplets.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Cet échangeur de chaleur comprend une pluralité de tubes plats à l'intérieur desquels s'écoule un fluide frigorigène, et une pluralité d'ailettes qui sont disposées entre les tubes plats et transmettent la chaleur du fluide frigorigène s'écoulant à travers les tubes plats. Les ailettes présentent chacune une partie plane dans laquelle une ouverture est formée dans une partie associée, et une persienne qui ouvre et ferme l'ouverture de la partie plane Un espace d'élimination de persienne dans lequel une position reliée à la partie d'extrémité de la persienne est entaillée est formé dans la partie plane.
PCT/JP2024/010902 2024-03-21 2024-03-21 Échangeur de chaleur et climatiseur Pending WO2025196996A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2024563063A JP7675951B1 (ja) 2024-03-21 2024-03-21 熱交換器及び空気調和装置
PCT/JP2024/010902 WO2025196996A1 (fr) 2024-03-21 2024-03-21 Échangeur de chaleur et climatiseur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2024/010902 WO2025196996A1 (fr) 2024-03-21 2024-03-21 Échangeur de chaleur et climatiseur

Publications (1)

Publication Number Publication Date
WO2025196996A1 true WO2025196996A1 (fr) 2025-09-25

Family

ID=95694081

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2024/010902 Pending WO2025196996A1 (fr) 2024-03-21 2024-03-21 Échangeur de chaleur et climatiseur

Country Status (2)

Country Link
JP (1) JP7675951B1 (fr)
WO (1) WO2025196996A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4311193A (en) * 1980-07-14 1982-01-19 Modine Manufacturing Company Serpentine fin heat exchanger
CN201449172U (zh) * 2009-05-15 2010-05-05 珠海格力电器股份有限公司 具有排水功能的微通道换热器
WO2014207785A1 (fr) * 2013-06-28 2014-12-31 三菱重工業株式会社 Échangeur de chaleur, structure d'échangeur de chaleur, et ailette destinée à un échangeur de chaleur
WO2018154806A1 (fr) * 2017-02-21 2018-08-30 三菱電機株式会社 Échangeur de chaleur et climatiseur
WO2021095087A1 (fr) * 2019-11-11 2021-05-20 三菱電機株式会社 Échangeur de chaleur et dispositif à cycle frigorifique
WO2022219719A1 (fr) * 2021-04-13 2022-10-20 三菱電機株式会社 Échangeur de chaleur et dispositif à cycle de réfrigération
WO2023170834A1 (fr) * 2022-03-09 2023-09-14 三菱電機株式会社 Échangeur de chaleur et dispositif à cycle de réfrigération équipé de l'échangeur de chaleur
WO2023199400A1 (fr) * 2022-04-12 2023-10-19 三菱電機株式会社 Échangeur de chaleur et dispositif à cycle de réfrigération

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Publication number Priority date Publication date Assignee Title
JPS602475Y2 (ja) * 1979-10-22 1985-01-23 松下冷機株式会社 熱交換器
JPS60253792A (ja) * 1984-05-30 1985-12-14 Hitachi Ltd 熱交換器用フイン及びその製造方法
JPS6126973U (ja) * 1984-07-24 1986-02-18 三菱重工業株式会社 熱交換器
IN2012DN00867A (fr) * 2009-09-16 2015-07-10 Carrier Corp
KR102218301B1 (ko) * 2013-07-30 2021-02-22 삼성전자주식회사 열교환기 및 그 코르게이트 핀
US10539374B2 (en) * 2014-04-16 2020-01-21 Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. Fin and bending type heat exchanger having the fin

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4311193A (en) * 1980-07-14 1982-01-19 Modine Manufacturing Company Serpentine fin heat exchanger
CN201449172U (zh) * 2009-05-15 2010-05-05 珠海格力电器股份有限公司 具有排水功能的微通道换热器
WO2014207785A1 (fr) * 2013-06-28 2014-12-31 三菱重工業株式会社 Échangeur de chaleur, structure d'échangeur de chaleur, et ailette destinée à un échangeur de chaleur
WO2018154806A1 (fr) * 2017-02-21 2018-08-30 三菱電機株式会社 Échangeur de chaleur et climatiseur
WO2021095087A1 (fr) * 2019-11-11 2021-05-20 三菱電機株式会社 Échangeur de chaleur et dispositif à cycle frigorifique
WO2022219719A1 (fr) * 2021-04-13 2022-10-20 三菱電機株式会社 Échangeur de chaleur et dispositif à cycle de réfrigération
WO2023170834A1 (fr) * 2022-03-09 2023-09-14 三菱電機株式会社 Échangeur de chaleur et dispositif à cycle de réfrigération équipé de l'échangeur de chaleur
WO2023199400A1 (fr) * 2022-04-12 2023-10-19 三菱電機株式会社 Échangeur de chaleur et dispositif à cycle de réfrigération

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