WO2020233419A1 - 冰箱 - Google Patents

冰箱 Download PDF

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Publication number
WO2020233419A1
WO2020233419A1 PCT/CN2020/089327 CN2020089327W WO2020233419A1 WO 2020233419 A1 WO2020233419 A1 WO 2020233419A1 CN 2020089327 W CN2020089327 W CN 2020089327W WO 2020233419 A1 WO2020233419 A1 WO 2020233419A1
Authority
WO
WIPO (PCT)
Prior art keywords
capillary
suction pipe
tube
side wall
capillary tube
Prior art date
Application number
PCT/CN2020/089327
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
森治
Original Assignee
海尔智家股份有限公司
Aqua株式会社
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 海尔智家股份有限公司, Aqua株式会社 filed Critical 海尔智家股份有限公司
Priority to CN202080036518.4A priority Critical patent/CN113874666A/zh
Priority to EP20809110.8A priority patent/EP3971495A4/en
Publication of WO2020233419A1 publication Critical patent/WO2020233419A1/zh

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    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0008—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/37—Capillary tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/052—Compression system with heat exchange between particular parts of the system between the capillary tube and another part of the refrigeration cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/054—Compression system with heat exchange between particular parts of the system between the suction tube of the compressor and another part of the cycle
    • 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
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits

Definitions

  • the invention relates to a refrigerator.
  • a refrigerator is equipped with a refrigerant circuit configured such that the refrigerant discharged from the compressor circulates in the order of a condenser, a capillary tube, an evaporator, and a suction pipe, and returns from the suction pipe to the compressor again.
  • the refrigerant in the evaporator absorbs the heat in the refrigerator and vaporizes. However, when the refrigerant in the evaporator is not sufficiently vaporized, it may happen that the liquid refrigerant flows from the evaporator into the suction pipe.
  • the suction pipe is also connected to the compressor. If no countermeasures are taken, the liquid (heavier mass) refrigerant will return to the compressor, which may become one of the causes of compressor failure.
  • a structure in which the outer surface of the suction pipe and the outer surface of the capillary are in thermal contact is adopted.
  • the temperature of the refrigerant passing through the capillary tube is relatively high, so heat exchange is performed between the refrigerant passing through the suction pipe and the capillary tube through thermal contact between the suction pipe and the capillary tube.
  • the refrigerant in the suction pipe vaporizes and the vaporized refrigerant flows into the compressor, so that the liquid refrigerant can be prevented from flowing into the compressor.
  • Patent Document 1 discloses a refrigerant circuit having an aluminum suction pipe.
  • Patent Document 1 JP 2013-92287 The technology disclosed in Patent Document 1 relates to a refrigerant circuit and a refrigerator equipped with the refrigerant circuit.
  • the refrigerant circuit includes an aluminum suction pipe and a capillary tube made of aluminum alloy.
  • the structure of the refrigerant circuit is that the suction pipe and the capillary are melted. State engagement.
  • the suction pipe and the capillary tube of the refrigerant circuit according to Patent Document 1 are joined by laser light irradiated from a laser welding machine. Moreover, when joining the suction tube and the capillary tube, a squeeze roller is used to form a pressure-contact state of the two.
  • Patent Document 1 uses an aluminum suction pipe that is cheaper than copper, it still has a problem of high production cost.
  • suction pipe and the capillary tube according to Patent Document 1 are in thermal contact only through the substantially linear fusion bonding portion. Therefore, since the formed thermal contact area is local, there is a space for improving the heat exchange efficiency of the refrigerant circulating in each of them.
  • the object of the present invention is to provide a refrigerator which aims to reduce the product cost, and at the same time, the joining operation of the suction pipe and the capillary tube is easier, and the heat exchange efficiency between the refrigerant circulating in the two is improved.
  • the refrigerator according to the present invention includes a refrigerant circuit, and the refrigerant circuit includes:
  • An aluminum suction tube including a recess formed in a length direction and recessed inward in a radial direction; and a capillary tube, the capillary tube being embedded in the recess.
  • the concave portion includes:
  • the bottom wall is located on the radial inner side of the suction pipe, and the capillary tube is placed on the bottom wall;
  • a first side wall which is connected to the first side edge of the bottom wall and rises radially outward, the first side wall is in contact with the capillary;
  • a second side wall which is connected to the second side edge of the bottom wall and rises radially outward, and the second side wall is in contact with the capillary;
  • the bottom wall is curved with a curvature corresponding to the outer surface of the capillary when viewed in cross section, and the bottom wall is in surface contact with the capillary.
  • the first side wall has a flat plate shape, or the first side wall is curved with a curvature corresponding to the outer surface of the capillary tube, and the first side wall and the capillary surface contact.
  • the second side wall has a flat plate shape, or the second side wall is curved with a curvature corresponding to the outer surface of the capillary tube, and the second side wall and the capillary surface contact.
  • auxiliary heat exchange component installed at the suction pipe to cover the recessed portion and the capillary tube embedded in the recessed portion.
  • auxiliary heat exchange component is an aluminum strip.
  • it further includes a heat shrinkable tube which accommodates the suction tube embedded with the capillary tube, and the heat shrinkable tube squeezes the capillary tube toward the recess.
  • the topmost part of the capillary tube is contained in the concave portion. .
  • the refrigerator according to the present invention can reduce the product cost by using an aluminum suction pipe.
  • the capillary tube is embedded in the recess formed in the suction pipe, the joining operation of the suction pipe and the capillary can be easily performed, and the suction pipe and the capillary can be kept in good thermal contact; therefore, it is possible to The heat transfer loss between the refrigerant circulating in the suction pipe and the refrigerant circulating in the capillary tube is reduced.
  • the capillary tube is in contact with each of the bottom wall, the first side wall, and the second side wall of the suction pipe recess, and is in contact with the bottom wall surface, the structure is simple and the suction can be further reduced. Loss of heat transfer between tube and capillary tube.
  • the refrigerator according to the present invention has a structure in which an auxiliary heat exchange member covering the capillary tube inserted into the recessed portion of the suction pipe is installed at the suction pipe, so that the refrigerant flowing in the suction pipe and the cooling flowing in the capillary can be further reduced. Loss of heat transfer between agents.
  • the capillary tube is squeezed toward the concave portion by the heat-shrinkable tube, the heat contact between the suction tube and the capillary tube can be maintained better; therefore, the refrigerant flowing in the suction tube and the capillary tube can be reduced. Loss of heat transfer between refrigerants circulating inside.
  • the refrigerator according to the present invention has a structure in which the topmost part of the capillary tube is included in the recess, so that it can prevent the heat-shrinkable tube from being squeezed to the topmost part from bulging; therefore,
  • the operation of incorporating the suction tube embedded with the capillary tube into the heat shrink tube can be easily performed, and at the same time, the heat shrink tube with a shorter diameter can be used; as a result, the product cost can be reduced.
  • Fig. 1 is a side vertical sectional view of the refrigerator involved in this embodiment.
  • Fig. 2 is a rear perspective view (perspective view) of the refrigerator according to this embodiment, which shows the refrigerant circuit.
  • Fig. 3 is a partial perspective view of the refrigerant circuit, which illustrates the form of the thermal contact area between the suction pipe and the capillary tube.
  • FIG. 4 is a vertical cross-sectional view of the refrigerant circuit, which illustrates the thermal contact area of the suction pipe and the capillary tube.
  • the refrigerator 1 according to an embodiment of the present invention will be described in detail with reference to the drawings.
  • the "up and down” direction corresponds to the height direction of the refrigerator 1
  • the "left and right” direction corresponds to the width direction of the refrigerator 1
  • the "front and rear” direction corresponds to the depth direction of the refrigerator 1. .
  • FIG. 1 is a side vertical sectional view of the refrigerator 1.
  • the refrigerator 1 involved in this embodiment includes a heat insulation box 2 which is equivalent to the main body of the refrigerator.
  • the heat insulation box 2 includes a plurality of storage rooms in which food and the like are stored.
  • a plurality of storage compartments correspond to the refrigerating compartment 3 and the freezing compartment 4 in order from the top, although there is no particular limitation.
  • Each storage room provided in the heat-insulating box 2 has openings on the front, and heat-insulating doors D1 and D2 are provided to seal these openings in a switchable manner.
  • the heat insulation door D1 seals the front opening of the refrigerating compartment 3 so that the upper and lower ends of the right side (viewed from the front of the refrigerator, for example) are rotatably supported on the heat insulation box 2.
  • the heat insulation door D2 is provided to seal the front opening of the freezer compartment 4 in such a way that it can be pulled out or pushed in the front and rear direction with respect to the heat insulation box 2.
  • the heat-insulating box 2 includes an outer box 2a made of steel plate, an inner box 2b made of synthetic resin, and an insulating material 2c made of foamed polyurethane (polyurethane foam), and the insulating material 2c is filled with A gap formed between the outer box 2a and the inner box 2b.
  • a heat-insulating partition wall (for example, a member shown by reference numeral 6 in Fig. 1) is arranged inside the heat-insulating box 2.
  • the refrigerating compartment 3 and the freezing compartment 4 are partitioned by this heat insulating partition wall 6.
  • the refrigerant circuit 10 is a passage for cooling the refrigerant inside the storage compartment of the refrigerator 1 to circulate.
  • FIG. 2 is a rear perspective view (perspective view) of the refrigerator 1, which shows the refrigerant circuit 10.
  • the refrigerant circuit 10 includes a compressor 11, a condenser (wave condenser) 12, a frame pipe 13 for preventing condensation, a dryer 14 for dehumidifying the refrigerant, a capillary tube 15, Evaporator 16, suction pipe 17.
  • the suction pipe 17 is connected to the compressor 11, thereby forming a circulation passage of the refrigerant.
  • the suction pipe 17 in this embodiment is made of aluminum which is cheaper than copper.
  • the outer surface of the suction pipe 17 is preferably painted to prevent electric corrosion.
  • the capillary 15 involved in this embodiment is made of copper, but it is not limited to this.
  • the refrigerant compressed by the compressor 11 is discharged to the condenser 12 (for example, extending to the left and right side walls and the bottom wall of the refrigerator 1), and then flows through the condenser 12 and flows to the frame pipe 13 connected to the condenser 12 ( For example, it extends to the periphery of the front opening of the storage room, etc.). Furthermore, the refrigerant reaches the evaporator 16 via the dryer 14 and the capillary tube 15, and then returns to the compressor 11 via the suction pipe 17.
  • thermal contact region As shown in FIG. 2, the pipes of the capillary tube 15 and the suction pipe 17 are laid adjacent to the rear side of the refrigerator 1. More specifically, thermal contact is performed in the regions HC1, HC2, and HC3 (hereinafter, this region is referred to as “thermal contact region”. In addition, the length of the thermal contact region is referred to as "heat exchange length”.).
  • the temperature of the refrigerant in the capillary tube 15 decreases and the temperature of the refrigerant in the suction pipe 17 increases.
  • the thermal contact area between the capillary tube 15 and the suction pipe 17 is not limited to the illustrated case.
  • FIG. 3 is a partial perspective view of the refrigerant circuit 10, which shows the thermal contact area of the capillary tube 15 and the suction pipe 17.
  • Fig. 4 is a vertical sectional view thereof.
  • the suction pipe 17 includes a recess 171 that is recessed inward in the radial direction of the suction pipe 17.
  • the concave portion 171 has an opening on the upper surface side.
  • the recess 171 is formed along the length direction of the suction pipe 17.
  • the capillary 15 in this embodiment is embedded in the recess 171. According to this embodiment, the capillary 15 and the suction pipe 17 can be brought into thermal contact by the operation of fitting the capillary 15 into the recess 171 of the suction pipe 17. Therefore, the contact (joining) operation of the two can be easily performed, and the production cost of the product can be reduced.
  • the recess 171 involved in this embodiment includes a first side wall 171S1, a second side wall 171S2, and a bottom wall 171B.
  • the first side wall 171S1 is connected to the first side edge 171B1 of the bottom wall 171B and rises radially outward.
  • the end edge 171T1 of the upright frontmost part of the first side wall 171S1 is joined to one end edge 1721 of the main body portion 172 (the part other than the recessed portion 171) of the arc-shaped cross section of the suction pipe 17.
  • the second side wall 171S2 is connected to the second side edge 171B2 of the bottom wall 171B and rises outward in the radial direction.
  • the end edge 171T2 of the upright frontmost part of the second side wall 171S2 is joined to the other end edge 1722 of the main body part 172 of the arc-shaped cross section of the suction pipe 17.
  • the length directions of the bottom wall 171B, the first side wall 171S1 and the second side wall 171S2 are formed along the length direction of the suction pipe 17.
  • the bottom wall 171B, the first side wall 171S1, and the second side wall 171S2 are described as special components, but they may be integrated in structure.
  • the capillary 15 embedded in the recess 171 is in contact with both the first side wall 171S1 and the second side wall 171S2 of the recess 171, and is placed on the bottom wall 171B. In this way, the capillary tube 15 and the suction pipe 17 (recessed portion 171) can be in contact at multiple places. Therefore, according to this embodiment, in addition to the simple joining operation of the two, even when aluminum is used instead of the raw material of the suction pipe 17, the thermal contact between the capillary 15 and the suction pipe 17 can be maintained well.
  • the bottom wall 171B is preferably curved with a curvature 15R corresponding to the outer surface of the capillary 15S. Since the bottom wall 171B has such a curved structure, the bottom wall 171B and the capillary 15 are in surface contact. As a result, the thermal contact between the capillary tube 15 and the suction pipe 17 can be maintained more satisfactorily, and the heat transfer loss between the refrigerant in the capillary tube 15 and the refrigerant in the suction pipe 17 can be greatly reduced.
  • first side wall 171S1 and the second side wall 171S2 are both substantially flat, they may be curved with a curvature corresponding to the outer surface 15S of the capillary tube like the bottom wall 171B and be 15-face contact form. By bending the first side wall 171S1 and the second side wall 171S2 in this way, the thermal contact between the capillary tube 15 and the suction pipe 17 can be further maintained well.
  • the thermal contact area between the capillary tube 15 and the suction pipe 17 in the refrigerant circuit 10 preferably further includes an auxiliary heat exchange member 18 for improving the heat exchange efficiency of the two.
  • the auxiliary heat exchange member 18 is installed at the suction pipe 17 to cover the capillary 15 embedded in the recess 171.
  • the type of the auxiliary heat exchange member 18 is not particularly limited, as long as it can serve as a heat exchange medium between the capillary 15 and the suction pipe 17, but it is preferably an aluminum tape with low cost and suitable thermal conductivity.
  • the auxiliary heat exchange member 18 is an aluminum tape, the following is preferable: the auxiliary heat exchange member 18 is bridged from the end edge 171T1 of the recess 171 to the end edge 171T2 to be stuck to the outer surface of the suction pipe 17
  • the capillary 15 can be fixed by simple operation.
  • the refrigerant circuit 10 is preferably provided with a heat shrink tube 19 that accommodates the suction tube 17 (covering the outer surface of the suction tube 17) into which the capillary 15 is embedded. Since the suction tube 17 is housed in the heat shrink tube 19, the capillary 15 can be fitted into the recess 171 while being squeezed toward the recess 171; therefore, the thermal contact between the capillary 15 and the suction tube 17 can be maintained further.
  • the top 15T of the capillary tube 15 is contained in the recess 171 of the suction pipe 17. Unlike this embodiment, assuming that the topmost portion 15T of the capillary 15 protrudes outward from the recess 171, the diameter of the heat shrink tube 19 must be increased in proportion to the protruding portion. Conversely, in this embodiment, since the top 15T of the capillary tube 15 is contained in the recess 171, the suction tube 17 in which the capillary tube 15 is embedded can be accommodated by a heat shrink tube 19 with a short diameter. Since the heat shrink tube 19 with a shorter diameter can be used, further product cost reduction can be achieved.
  • the capillary tube is simply placed on the tubular suction tube in which the recess 171 is not formed and a heat shrinkable tube is wound thereon to fix the two.
  • the heat exchange length can be shortened by about 20% (in the case of the prior art form, the heat exchange length is about 1800 mm, but in the case of this embodiment, the heat exchange length can be shortened to 1500 mm.). Therefore, since the amount of use of metal components such as the suction pipe can be reduced, further cost reduction of the product can be achieved.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
PCT/CN2020/089327 2019-05-17 2020-05-09 冰箱 WO2020233419A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202080036518.4A CN113874666A (zh) 2019-05-17 2020-05-09 冰箱
EP20809110.8A EP3971495A4 (en) 2019-05-17 2020-05-09 FRIDGE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019093399A JP2020186887A (ja) 2019-05-17 2019-05-17 冷蔵庫
JP2019-093399 2019-05-17

Publications (1)

Publication Number Publication Date
WO2020233419A1 true WO2020233419A1 (zh) 2020-11-26

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PCT/CN2020/089327 WO2020233419A1 (zh) 2019-05-17 2020-05-09 冰箱

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EP (1) EP3971495A4 (ja)
JP (1) JP2020186887A (ja)
CN (1) CN113874666A (ja)
WO (1) WO2020233419A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4141360A1 (de) * 2021-08-26 2023-03-01 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder gefriergerät
WO2024111733A1 (ko) * 2022-11-25 2024-05-30 삼원동관(주) 냉동사이클용 일체형 파이프의 제조 시스템 및 제조 방법

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KR20240051445A (ko) 2022-10-13 2024-04-22 재단법인 경북하이브리드부품연구원 냉동사이클용 일체형 파이프, 그 제조 시스템 및 제조 방법

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CN102313403A (zh) * 2011-09-13 2012-01-11 海尔集团公司 蒸发器总成、制冷回路系统及制冷设备
JP2013092287A (ja) 2011-10-25 2013-05-16 Terumasa Matsumoto 冷凍サイクルの熱交換器
CN103673422A (zh) * 2013-12-14 2014-03-26 广东奥马电器股份有限公司 一种节能回气管组件、加工方法及模具
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4141360A1 (de) * 2021-08-26 2023-03-01 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder gefriergerät
WO2024111733A1 (ko) * 2022-11-25 2024-05-30 삼원동관(주) 냉동사이클용 일체형 파이프의 제조 시스템 및 제조 방법

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Publication number Publication date
EP3971495A4 (en) 2022-07-06
JP2020186887A (ja) 2020-11-19
CN113874666A (zh) 2021-12-31
EP3971495A1 (en) 2022-03-23

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