WO2017085888A1 - Dispositif à cycle frigorifique - Google Patents

Dispositif à cycle frigorifique Download PDF

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Publication number
WO2017085888A1
WO2017085888A1 PCT/JP2015/082790 JP2015082790W WO2017085888A1 WO 2017085888 A1 WO2017085888 A1 WO 2017085888A1 JP 2015082790 W JP2015082790 W JP 2015082790W WO 2017085888 A1 WO2017085888 A1 WO 2017085888A1
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WO
WIPO (PCT)
Prior art keywords
refrigerant
valve
way valve
indoor heat
refrigeration cycle
Prior art date
Application number
PCT/JP2015/082790
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English (en)
Japanese (ja)
Inventor
拓未 西山
航祐 田中
拓也 松田
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to EP15908827.7A priority Critical patent/EP3379176B1/fr
Priority to ES15908827T priority patent/ES2909912T3/es
Priority to PCT/JP2015/082790 priority patent/WO2017085888A1/fr
Priority to JP2017551510A priority patent/JP6773680B2/ja
Publication of WO2017085888A1 publication Critical patent/WO2017085888A1/fr

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    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/005—Outdoor unit expansion valves
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/0276—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using six-way valves

Definitions

  • the present invention relates to a refrigeration cycle apparatus, and more particularly to a refrigeration cycle apparatus including a plurality of indoor heat exchangers.
  • a main object of the present invention is a refrigeration cycle apparatus provided with a plurality of indoor units that are individually switchable between operation and stop operation, in which some indoor units are operated and other indoor units are stopped.
  • An object of the present invention is to provide a refrigeration cycle apparatus in which refrigerant is suppressed from staying in a stopped indoor unit even when placed in a standing state.
  • a refrigeration cycle apparatus includes a plurality of indoor heat exchangers that perform heat exchange between a refrigerant and indoor air, an outdoor heat exchanger that performs heat exchange between the refrigerant and outdoor air, and a refrigerant flow path.
  • a switching six-way valve, a compressor for compressing the refrigerant, and a shut-off valve provided to block the refrigerant flow are provided.
  • the plurality of indoor heat exchangers are connected to the outdoor heat exchanger via a six-way valve.
  • the plurality of indoor heat exchangers are connected in parallel to the six-way valve. At least one of the plurality of indoor heat exchangers is connected via a six-way valve and a shut-off valve.
  • the present invention when a plurality of indoor units are provided so that the operation operation / stop operation can be switched individually, some indoor units are operated and other indoor units are stopped. Sometimes, it is possible to provide a refrigeration cycle apparatus in which refrigerant is suppressed from staying in a stopped indoor unit.
  • FIG. 1 is a diagram showing a refrigeration cycle apparatus according to Embodiment 1.
  • FIG. It is sectional drawing which shows the six way valve at the time of air_conditionaing
  • FIG. It is a figure which shows the modification of the six-way valve of the refrigeration cycle apparatus which concerns on Embodiment 1.
  • FIG. It is a figure which shows each state at the time of air_conditionaing
  • FIG. 3 is a diagram showing a refrigeration cycle apparatus according to Embodiment 2.
  • the refrigeration cycle apparatus 100 includes a plurality of indoor heat exchangers 1 (1a, 1b), an outdoor heat exchanger 2, a six-way valve 3, a shut-off valve 4 (4a, 4b), and extension pipes 5 (5a, 5b), 6 (6a). 6b), a compressor 7, an expansion valve (second expansion valve) 8, and fans 9a, 9b, 9c.
  • a plurality of indoor heat exchangers 1, outdoor heat exchangers 2, six-way valves 3, stop valves 4, extension pipes 5 and 6, compressors 7, and expansion valves (second expansion valves) 8 are:
  • the refrigerant circuits are connected to each other and circulate through the refrigerant.
  • the refrigeration cycle apparatus 100 includes a plurality of stop valves 4a and 4b. All the indoor heat exchangers 1a and 1b are connected to the six-way valve 3 via the shut-off valves 4a and 4b, respectively.
  • the plurality of indoor heat exchangers 1a and 1b are provided so that they can be individually switched between an operating state and a stopped state.
  • the plurality of indoor heat exchangers 1a and 1b each perform heat exchange between the refrigerant and the indoor air in an operating state.
  • the plurality of indoor heat exchangers 1 a and 1 b are connected to the six-way valve 3 in parallel with each other.
  • the inlet sides of the plurality of indoor heat exchangers 1a and 1b are connected to the port 36 of the six-way valve 3, respectively, and the outlet sides of the plurality of indoor heat exchangers 1a and 1b are connected to the port 34 of the six-way valve 3, respectively.
  • the outdoor heat exchanger 2 performs heat exchange between the refrigerant and the outdoor air.
  • the six-way valve 3 has a cooling cycle state during cooling operation (see the solid line in FIG. 1) and a heating cycle state during heating operation (see the broken line in FIG. 1). It can be switched to either state.
  • the plurality of indoor heat exchangers 1 a and 1 b are connected to the outdoor heat exchanger 2 via the six-way valve 3.
  • the six-way valve 3 is configured as, for example, a slide type switching valve.
  • the six-way valve 3 has a valve main body 30 that is a hollow frame and six ports 31, 32, 33, 34, 35, 36 connected to the valve main body 30.
  • the five ports 32, 33, 34, 35, and 36 are arranged in the extending direction of the valve body 30 on the opposite side of the port 31 with respect to the valve body 30.
  • the port 31 is connected to the discharge side of the compressor 7.
  • the port 32 is connected to the outdoor heat exchanger 2.
  • the port 32 is connected to the inlet side of the outdoor heat exchanger 2 during the cooling operation and the outlet side of the outdoor heat exchanger 2 during the heating operation.
  • the port 33 is connected to the suction side of the compressor 7.
  • the port 34 is connected to the outlet sides of the plurality of indoor heat exchangers 1a and 1b.
  • the port 35 is connected to the outdoor heat exchanger 2 via the expansion valve 8.
  • the port 35 is connected to the outlet side of the outdoor heat exchanger 2 during the cooling operation and the inlet side of the outdoor heat exchanger 2 during the heating operation.
  • the port 36 is connected to the inlet side of the plurality of indoor heat exchangers 1a and 1b.
  • a slide valve body 39 is provided that can slide in the extending direction.
  • Two pipe lines are provided in the slide valve body 39.
  • the two pipe lines in the slide valve body 39 are provided so that two of the five ports 32, 33, 34, 35, and 36 can be connected to each other.
  • the hexagonal valve 3 is connected to the port 31 and the port 32, the port 33 and the port 34, and the port 35 and the port 36 during the cooling operation.
  • the port 31 and the port 36, the port 32 and the port 33, and the port 34 and the port 35 are connected to each other.
  • the port 36 of the six-way valve 3 functions as an outflow port through which the refrigerant flows out to the indoor heat exchangers 1a and 1b regardless of the cooling operation or the heating operation.
  • the port 34 of the six-way valve 3 is provided so that the refrigerant can flow in from the indoor heat exchangers 1a and 1b regardless of the cooling operation or the heating operation.
  • the pipe connecting the port 36 of the six-way valve 3 and each of the indoor heat exchangers 1a and 1b is branched from the portion connected to the port 32 and the portion connected to the port 36 and is parallel to each other. And a portion connected to each indoor heat exchanger 1a, 1b.
  • the shut-off valve 4a and the extension pipe 5a are provided at a portion connected to the indoor heat exchanger 1a in the pipe connecting the port 36 of the six-way valve 3 and each of the indoor heat exchangers 1a and 1b.
  • the shut-off valve 4b and the extension pipe 5b are provided in a portion connected to the indoor heat exchanger 1b in the pipe connecting the port 36 of the six-way valve 3 and each of the indoor heat exchangers 1a and 1b.
  • the shutoff valves 4a and 4b are provided so as to be able to block the flow of the refrigerant independently of each other.
  • the shutoff valve 4a is provided on a pipe connecting the port 36 of the six-way valve 3 and the indoor heat exchanger 1a, and is provided so as to be able to close the pipe.
  • the shutoff valve 4b is provided on a pipe connecting the port 36 of the six-way valve 3 and the indoor heat exchanger 1b, and is provided so as to be able to close the pipe.
  • the shutoff valves 4a and 4b may have any configuration as long as the shutoff or opening of the pipes can be controlled, but are configured as electromagnetic valves, for example.
  • the stop valves 4a and 4b are provided, for example, at positions closer to the six-way valve 3 than the extension pipes 5a and 5b.
  • the extension pipe 5a is provided between the port 36 of the six-way valve 3 and the indoor heat exchanger 1a, and more specifically, between the shutoff valve 4a and the indoor heat exchanger 1a. Is provided.
  • the extension pipe 5b is provided between the port 36 of the six-way valve 3 and the indoor heat exchanger 1b, and more specifically, between the shutoff valve 4b and the indoor heat exchanger 1b. Is provided.
  • the extension pipe 6a is provided between the indoor heat exchanger 1a and the port 34 of the six-way valve 3 as described above.
  • the extension pipe 6b is provided between the indoor heat exchanger 1b and the port 34 of the six-way valve 3 as described above.
  • the compressor 7 compresses the refrigerant sucked from the port 33 of the six-way valve 3 and discharges it to the port 31 of the six-way valve 3.
  • the expansion valve 8 expands the refrigerant flowing from the outdoor heat exchanger 2 to the port 35 of the six-way valve 3 during the cooling operation.
  • the expansion valve 8 expands the refrigerant flowing from the port 35 of the six-way valve 3 to the outdoor heat exchanger 2 during the heating operation.
  • the fans 9a, 9b, and 9c are provided so as to blow air to the indoor heat exchangers 1a and 1b and the outdoor heat exchanger 2, respectively.
  • the fluid circulated in the refrigeration cycle apparatus 100 is water or antifreeze (brine) and a refrigerant.
  • the refrigerant is, for example, a mixed refrigerant obtained by mixing at least two kinds of refrigerants.
  • the refrigerant may be an azeotropic refrigerant mixture or a non-azeotropic refrigerant mixture.
  • the expanded refrigerant passes through the port 35 and the port 36 of the six-way valve 3 and the opened stop valves 4a and 4b, and reaches the indoor heat exchangers 1a and 1b. In the indoor heat exchangers 1a and 1b, Heat exchanged and evaporated.
  • the refrigeration cycle apparatus 100 performs heat exchange between the refrigerant and indoor air in the operating state, and is provided with a plurality of indoor heat exchangers 1a and 1b that are individually switchable between the operating state and the stopped state, and the refrigerant.
  • An outdoor heat exchanger 2 that performs heat exchange with outdoor air, a six-way valve 3 that switches a refrigerant flow path, a compressor 7 that compresses the refrigerant, and a closing that can block the refrigerant flow Valves 4a and 4b are provided.
  • the plurality of indoor heat exchangers 1 a and 1 b are connected to the outdoor heat exchanger 2 via the six-way valve 3.
  • the plurality of indoor heat exchangers 1 a and 1 b are connected to the six-way valve 3 in parallel with each other. At least one of the plurality of indoor heat exchangers 1a and 1b is connected to the six-way valve 3 via the shut-off valves 4a and 4b.
  • the plurality of indoor heat exchangers 1a and 1b have a constant refrigerant flow direction during the cooling operation and the heating operation by the six-way valve 3, and do not reverse.
  • the port 36 of the six-way valve 3 to which the plurality of indoor heat exchangers 1a and 1b are connected in parallel is the port 35 connected to the outdoor heat exchanger 2 via the expansion valve 8 during cooling operation.
  • the indoor heat exchangers 1a and 1b can be counterflowed at a temperature even during a cooling operation and a heating operation. Therefore, the refrigeration cycle apparatus 100 has high heat transfer performance. Further, according to the refrigeration cycle apparatus 100, the indoor heat exchanger 1a, the indoor heat exchanger 1a, compared with the conventional refrigeration cycle apparatus in which the refrigerant and air flow in parallel during either the cooling operation or the heating operation. The logarithmic average temperature difference between the refrigerant and air in 1b can be increased. Therefore, in the refrigeration cycle apparatus 100, even when a non-azeotropic refrigerant mixture is enclosed and a temperature gradient is formed in the indoor heat exchangers 1a and 1b, a decrease in heat exchange performance is suppressed.
  • the refrigeration cycle apparatus 100 since the refrigeration cycle apparatus 100 has a large logarithmic average temperature of the indoor heat exchangers 1a and 1b, the refrigeration cycle apparatus 100 has a predetermined value for the heat exchange amount of the indoor heat exchangers 1a and 1b.
  • the refrigerant pressure can be increased compared to the conventional refrigeration cycle apparatus. Therefore, according to the refrigeration cycle apparatus 100, compared with the conventional refrigeration cycle apparatus, the refrigerant compression rate in the compressor 7 can be lowered, and the efficiency of the refrigeration cycle can be improved.
  • the refrigeration cycle apparatus 100 since the refrigeration cycle apparatus 100 is provided with a plurality of indoor heat exchangers 1a and 1b that can be counterflowed by the six-way valve 3, it can be counterflowed by combining a plurality of four-way valves and bridge circuits. Compared to the conventional refrigeration cycle apparatus provided in the above, the size can be reduced. Further, the refrigeration cycle apparatus 100 has a smaller number of parts than the conventional refrigeration cycle apparatus in which counterflow of a plurality of indoor heat exchangers as described above and prevention of refrigerant stagnation in the indoor heat exchanger are realized. The reliability can be improved.
  • the partial indoor heat exchangers 1b and The shut-off valve 4b only needs to be provided between the hexagonal valve 3 and the valve.
  • the shutoff valves 4a are provided between all the indoor heat exchangers 1a and 1b and the six-way valve 3, respectively. , 4b are provided.
  • the stop valves 4a and 4b may be configured as electromagnetic valves, for example. In this way, the stop valves 4a and 4b can be controlled independently and easily.
  • the six-way valve 3 may be configured as a rotary switching valve.
  • the six-way valve 3 has a valve body 30 and six ports 31, 32, 33, 34, 35, 36 connected to the valve body 30.
  • the valve body 30 includes, for example, a first valve body 30A and a second valve body 30B that are relatively rotatable.
  • the port 31 is connected to the first valve body 30A, and the ports 32, 33, 34, 35, and 36 are connected to the second valve body 30B.
  • the ports 32, 33, 34, 35, and 36 are arranged in the circumferential direction of the second valve body 30B.
  • Three pipe lines 41, 42, and 43 are formed in the first valve body 30A.
  • the pipe line 41 is provided so as to be always connectable to the port 31 regardless of the relative rotational operation of the first valve body 30A and the second valve body 30B.
  • the pipe line 41 is provided so as to be connectable to the port 32 or the port 36 by the relative rotational operation of the first valve body 30A and the second valve body 30B.
  • the pipe line 41 is provided so as to be able to form a flow path between the port 31 and the port 32 or between the port 31 and the port 36 by the rotation operation.
  • the pipelines 42 and 43 are provided so as to be able to connect two of the ports 32, 33, 34, 35 and 36, respectively.
  • the pipe line 42 is provided so that a flow path can be formed between the port 33 and the port 34 or between the port 32 and the port 33 by the rotation operation.
  • the pipe line 43 is provided so that a flow path can be formed between the port 35 and the port 36 or between the port 34 and the port 35 by the above-described rotation operation. Even in this way, the six-way valve 3 can be switched between a cooling cycle state indicated by a solid line in FIG. 1 and a heating cycle state indicated by a broken line in FIG. 1.
  • the refrigeration cycle apparatus 101 basically has the same configuration as the refrigeration cycle apparatus 100, but differs in that the stop valves are configured as expansion valves (first expansion valves) 10a and 10b.
  • the expansion valves 10a and 10b are provided independently so as to be able to block the flow of the refrigerant.
  • the expansion valve 10a is provided on a pipe connecting the port 36 of the six-way valve 3 and the indoor heat exchanger 1a.
  • the expansion valve 10b is provided on the pipe connecting the port 36 of the six-way valve 3 and the indoor heat exchanger 1b.
  • the expansion valves 10a and 10b can close the pipes or expand the refrigerant flowing through the pipes according to the opening degrees.
  • the expansion valves 10a and 10b are controlled so as to close the pipes when the indoor heat exchangers 1a and 1b are in a stopped state and to expand the refrigerant flowing through the pipes when the indoor heat exchangers 1a and 1b are in an operating state. Is done.
  • the expansion valves 10a and 10b are provided, for example, at positions closer to the six-way valve 3 than the extension pipes 5a and 5b.
  • the indoor heat exchangers 1a of a plurality of indoor heat exchangers 1a and 1b are in an operating state, and other indoor heat exchangers 1b are in a stopped state, the indoor in a stopped state
  • the refrigerant flow between the heat exchanger 1b and the six-way valve 3 can be blocked by the expansion valve 10b.
  • the refrigerant is prevented from flowing into and staying in the indoor heat exchanger 1b in the stopped state. Since the refrigeration cycle apparatus 101 includes the six-way valve 3 having the same configuration as that of the refrigeration cycle apparatus 100, the indoor heat exchangers 1a and 1b can be counterflowed with temperature even during the cooling operation and the heating operation.
  • the expansion valve 8 is preferably fully opened during the cooling operation.
  • liquid refrigerant (liquid refrigerant) condensed in the outdoor heat exchanger is decompressed and expanded by an expansion valve and sent to the indoor heat exchanger in a gas-liquid two-phase state.
  • an expansion valve 8 located between the outdoor heat exchanger 2 and the six-way valve 3, the six-way valve 3 and the indoor Expansion valves 10a and 10b positioned between the heat exchangers 1a and 1b are provided.
  • the refrigerant sent to the indoor heat exchangers 1a and 1b only needs to be expanded at least in the expansion valves 10a and 10b.
  • liquid refrigerant can flow from the port 35 to the port 36 of the six-way valve 3 instead of the gas-liquid two-phase refrigerant.
  • the refrigerant flow in the six-way valve 3 can be stabilized.
  • coolant can be reduced by making the refrigerant
  • the refrigeration cycle apparatus according to the present invention is particularly advantageously applied to a refrigeration cycle apparatus including a plurality of indoor units that are individually switchable between operation and stop operations.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

La présente invention permet de supprimer l'accumulation de réfrigérant dans les unités intérieures arrêtées, même lorsque certaines unités intérieures sont en fonctionnement tandis que d'autres unités intérieures sont arrêtées. L'invention comporte : une pluralité d'échangeurs de chaleur intérieurs (1a, 1b) destinés à effectuer un échange de chaleur entre le réfrigérant et l'air ; un échangeur de chaleur extérieur (2) destiné à effectuer un échange de chaleur entre le réfrigérant et l'air ; une soupape à six voies (3) destinée à commuter un circuit d'écoulement de réfrigérant ; un compresseur (7) destiné à comprimer le réfrigérant ; et des soupapes d'arrêt (4a, 4b) disposées de façon à pouvoir couper l'écoulement de réfrigérant. Lesdits échangeurs de chaleur intérieurs sont reliés à l'échangeur de chaleur extérieur par l'intermédiaire de la soupape à six voies. Lesdits échangeurs de chaleur intérieurs sont reliés en parallèle les uns aux autres par rapport à la soupape à six voies. Au moins l'un desdits échangeurs de chaleur intérieurs est relié à la soupape à six voies par l'intermédiaire de la soupape d'arrêt.
PCT/JP2015/082790 2015-11-20 2015-11-20 Dispositif à cycle frigorifique WO2017085888A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP15908827.7A EP3379176B1 (fr) 2015-11-20 2015-11-20 Dispositif à cycle frigorifique
ES15908827T ES2909912T3 (es) 2015-11-20 2015-11-20 Dispositivo de ciclo de refrigeración
PCT/JP2015/082790 WO2017085888A1 (fr) 2015-11-20 2015-11-20 Dispositif à cycle frigorifique
JP2017551510A JP6773680B2 (ja) 2015-11-20 2015-11-20 冷凍サイクル装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/082790 WO2017085888A1 (fr) 2015-11-20 2015-11-20 Dispositif à cycle frigorifique

Publications (1)

Publication Number Publication Date
WO2017085888A1 true WO2017085888A1 (fr) 2017-05-26

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PCT/JP2015/082790 WO2017085888A1 (fr) 2015-11-20 2015-11-20 Dispositif à cycle frigorifique

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Country Link
EP (1) EP3379176B1 (fr)
JP (1) JP6773680B2 (fr)
ES (1) ES2909912T3 (fr)
WO (1) WO2017085888A1 (fr)

Cited By (5)

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JP2017133619A (ja) * 2016-01-28 2017-08-03 株式会社不二工機 六方切換弁
CN108775728A (zh) * 2018-07-20 2018-11-09 珠海格力电器股份有限公司 一种多联机冷热水机组
WO2019215916A1 (fr) * 2018-05-11 2019-11-14 三菱電機株式会社 Système à cycle de réfrigération
WO2020174618A1 (fr) 2019-02-27 2020-09-03 三菱電機株式会社 Dispositif de climatisation
CN113970194A (zh) * 2020-07-24 2022-01-25 约克广州空调冷冻设备有限公司 热泵系统

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017133619A (ja) * 2016-01-28 2017-08-03 株式会社不二工機 六方切換弁
WO2019215916A1 (fr) * 2018-05-11 2019-11-14 三菱電機株式会社 Système à cycle de réfrigération
EP3792570A4 (fr) * 2018-05-11 2021-04-21 Mitsubishi Electric Corporation Système à cycle de réfrigération
JPWO2019215916A1 (ja) * 2018-05-11 2021-05-13 三菱電機株式会社 冷凍サイクル装置
JP7034272B2 (ja) 2018-05-11 2022-03-11 三菱電機株式会社 冷凍サイクル装置
US11365914B2 (en) 2018-05-11 2022-06-21 Mitsubishi Electric Corporation Refrigeration cycle apparatus
CN108775728A (zh) * 2018-07-20 2018-11-09 珠海格力电器股份有限公司 一种多联机冷热水机组
CN108775728B (zh) * 2018-07-20 2023-08-04 珠海格力电器股份有限公司 一种多联机冷热水机组
WO2020174618A1 (fr) 2019-02-27 2020-09-03 三菱電機株式会社 Dispositif de climatisation
US12104818B2 (en) 2019-02-27 2024-10-01 Mitsubishi Electric Corporation Air-conditioning apparatus
CN113970194A (zh) * 2020-07-24 2022-01-25 约克广州空调冷冻设备有限公司 热泵系统

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EP3379176A1 (fr) 2018-09-26
ES2909912T3 (es) 2022-05-10
JP6773680B2 (ja) 2020-10-21
JPWO2017085888A1 (ja) 2018-07-19
EP3379176B1 (fr) 2022-03-02

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