WO2021084743A1 - Dispositif à cycle de réfrigération - Google Patents

Dispositif à cycle de réfrigération Download PDF

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Publication number
WO2021084743A1
WO2021084743A1 PCT/JP2019/043094 JP2019043094W WO2021084743A1 WO 2021084743 A1 WO2021084743 A1 WO 2021084743A1 JP 2019043094 W JP2019043094 W JP 2019043094W WO 2021084743 A1 WO2021084743 A1 WO 2021084743A1
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WO
WIPO (PCT)
Prior art keywords
port
expansion valve
heat exchanger
refrigeration cycle
flow path
Prior art date
Application number
PCT/JP2019/043094
Other languages
English (en)
Japanese (ja)
Inventor
智隆 石川
悠介 有井
素 早坂
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 CN201980101418.2A priority Critical patent/CN114585866A/zh
Priority to PCT/JP2019/043094 priority patent/WO2021084743A1/fr
Priority to CN202311470009.4A priority patent/CN117329723A/zh
Priority to JP2021554030A priority patent/JPWO2021084743A1/ja
Priority to EP19950515.7A priority patent/EP4053470A4/fr
Publication of WO2021084743A1 publication Critical patent/WO2021084743A1/fr
Priority to JP2023201534A priority patent/JP2024023437A/ja

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Classifications

    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/005—Compression machines, plants or systems with non-reversible cycle of the single unit type
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • 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
    • F25B41/31—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
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • 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
    • F25B2400/13—Economisers
    • 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
    • F25B2400/23—Separators
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19—Pressures
    • F25B2700/193—Pressures of the compressor
    • F25B2700/1931—Discharge pressures
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19—Pressures
    • F25B2700/193—Pressures of the compressor
    • F25B2700/1933—Suction pressures
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21151—Temperatures of a compressor or the drive means therefor at the suction side of the compressor
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor

Definitions

  • the present invention relates to a refrigeration cycle device including a receiver for storing a refrigerant.
  • Patent Document 1 discloses a heat pump type hot water supply outdoor unit including a medium pressure receiver into which a refrigerant decompressed by an expansion valve flows in.
  • a refrigerant having a pressure (intermediate pressure) smaller than the pressure of the refrigerant discharged from the compressor and larger than the pressure of the refrigerant sucked into the compressor flows into the medium pressure receiver disclosed in Patent Document 1.
  • the pressure and temperature of the refrigerant discharged from the compressor sharply decrease. In some cases. A sharp drop in pressure and temperature of the refrigerant reduces the reliability of the refrigeration cycle device.
  • the present invention has been made to solve the above-mentioned problems, and an object thereof is to improve the reliability of the refrigeration cycle apparatus.
  • the refrigerant circulates in the order of the compressor, the first heat exchanger, the second heat exchanger, the first expansion valve, and the third heat exchanger.
  • the refrigeration cycle device includes a receiver, a second expansion valve, a first flow path, a second flow path, a ventilation pipe, and a third expansion valve.
  • the receiver has a first port, a second port, and a third port.
  • the third port is located higher than the second port.
  • the second expansion valve is connected to the second port.
  • the first flow path connects the second expansion valve to the compressor via the second heat exchanger.
  • the second flow path connects the first heat exchanger to the second heat exchanger.
  • the vent pipe connects the third port to the portion of the first flow path between the second expansion valve and the second heat exchanger.
  • the third expansion valve is connected between the second flow path and the first port.
  • the reliability of the refrigeration cycle apparatus can be improved by connecting the third expansion valve between the second flow path and the first port.
  • FIG. 1 is a functional block diagram showing the configuration of the refrigeration cycle device 100 according to the embodiment.
  • Examples of the refrigerating cycle device 100 include a refrigerator, an air conditioner, and a showcase.
  • the refrigeration cycle apparatus 100 includes a compressor 1, a condenser 2 (first heat exchanger), a HIC (Heat Inter Changer) 3 (second heat exchanger), and an evaporator 4. (Third heat exchanger), expansion valve 5 (first expansion valve), expansion valve 6 (second expansion valve), expansion valve 7 (third expansion valve), receiver 8, vent pipe 9 and the like.
  • the control device 10 the temperature sensors Sa1 to Sa3, and the pressure sensors Sb1 and Sb2 are provided.
  • Each of the expansion valves 5 to 7 includes, for example, an electronic LEV (Linear Expansion Valve).
  • the vent tube 9 includes, for example, a capillary tube.
  • the compressor 1 includes a discharge port P11, a suction port P12, and an injection port P13.
  • the compressor 1 is, for example, a high-pressure shell type compressor, and stores the lubricating oil of the compression mechanism inside the compressor 1.
  • the refrigerant circulates in the order of the discharge port P11, the condenser 2, the HIC 3, the expansion valve 5, the evaporator 4, and the suction port P12.
  • the receiver 8 has a port P71 (first port), a port P72 (second port), and a port P73 (third port). Ports P71 and P73 are formed on the upper surface of the receiver.
  • the port P72 is formed on the bottom surface of the receiver 8 facing the upper surface.
  • the port P73 is located higher than the port P72. Ports P71 to P73 may be formed on the side surface of the receiver 8.
  • the expansion valve 6 is connected to the port P72.
  • the expansion valve 6 is connected to the injection port P13 via the HIC 3 by the injection flow path FP1 (first flow path).
  • the ventilation pipe 9 connects the port P73 to the portion of the injection flow path FP1 between the expansion valve 6 and the HIC3.
  • the condenser 2 and the HIC 3 are connected by a flow path FP2 (second flow path).
  • the expansion valve 7 is connected between the flow path FP2 and the port P71.
  • a part of the refrigerant flowing out of the condenser 2 is guided from the flow path FP2 to the expansion valve 7 before flowing into the HI C3, is depressurized by the expansion valve 7, and then flows into the receiver 8 from the port P71.
  • the amount of refrigerant per unit time flowing into the receiver 8 from the port P71 is controlled by the opening degree of the expansion valve 7.
  • the refrigerant flowing out of the receiver 8 is decompressed and then sucked into the compressor 1 from the injection port P13. Since the pressure of the refrigerant flowing into the receiver 8 is an intermediate pressure, a supercritical refrigerant such as carbon dioxide can also be stored as a liquid in the receiver 8. Since the supercritical refrigerant flowing out from the receiver 8 has a degree of supercooling, the performance of the refrigeration cycle device 100 can be improved by using the supercritical refrigerant.
  • the liquid refrigerant (liquid refrigerant) is stored from the bottom of the receiver 8, and the gaseous refrigerant (gas refrigerant) is inside the receiver 8 above the liquid level of the liquid refrigerant. get together.
  • a saturated liquid of the refrigerant flows out from the port P72.
  • the saturated liquid is depressurized by the expansion valve 6.
  • the gas refrigerant flowing out of the port P73 is guided to the injection flow path FP1 by the ventilation pipe 9.
  • the amount of refrigerant flowing out from the port P72 per unit time is controlled by the opening degree of the expansion valve 6. That is, the ratio of the amount of gas refrigerant to the amount of liquid refrigerant in the refrigerant flowing into HIC 3 is adjusted by the opening degree of the expansion valve 6.
  • the larger the ratio of the gas refrigerant amount the more the decrease in the temperature Td can be suppressed
  • the larger the ratio of the liquid refrigerant amount the more the decrease in the pressure Pd can be suppressed. it can. Therefore, by adjusting the ratio, it is possible to adjust the distribution of the effect of suppressing the decrease in pressure Pd and the effect of suppressing the decrease in temperature Td.
  • the refrigerant from the receiver 8 is guided to the injection port P13 via the HIC 3 by the injection flow path FP1.
  • the refrigerant from the condenser 2 is cooled by the refrigerant from the receiver 8.
  • the ratio (dryness) of the gas refrigerant to the refrigerant flowing into the receiver 8 can be increased to about 0.5 by guiding the refrigerant before being cooled by the HIC 3 to the receiver 8. As a result, it becomes easy to adjust the ratio of the amount of gas refrigerant to the amount of liquid refrigerant in the refrigerant flowing from the receiver 8 to the HI C3.
  • the control device 10 acquires the temperature Td and the pressure Pd of the refrigerant discharged from the compressor 1 from the temperature sensor Sa1 and the pressure sensor Sb1, respectively.
  • the control device 10 acquires the temperature Ts and the pressure Ps of the refrigerant sucked into the compressor 1 from the temperature sensor Sa2 and the pressure sensor Sb2, respectively.
  • the control device 10 acquires the temperature T1 of the refrigerant flowing out of the condenser 2 from the temperature sensor Sa3.
  • the control device 10 controls the drive frequency of the compressor 1 to control the amount of refrigerant discharged by the compressor 1 per unit time.
  • the control device 10 controls the opening degree of each of the expansion valves 5 to 7.
  • the control device 10 controls the compressor 1 and the expansion valves 5 to 7 so that, for example, the temperature Td and the degree of supercooling of the refrigerant flowing out of the condenser 2 each become target values. ..
  • the target value of the temperature Td is 100 ° C.
  • the target value of the supercooling degree is 5K.
  • FIG. 2 is a functional block diagram showing the configuration of the control device 10 of FIG.
  • the control device 10 includes a processing circuit 11, a memory 12, and an input / output unit 13.
  • the processing circuit 11 may be dedicated hardware or a CPU (Central Processing Unit) that executes a program stored in the memory 12.
  • the processing circuit 11 includes, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA ( Field Programmable Gate Array) or a combination of these is applicable.
  • the processing circuit 11 is a CPU, the function of the control device 10 is realized by software, firmware, or a combination of software and firmware.
  • the software or firmware is described as a program and stored in the memory 12.
  • the processing circuit 11 reads and executes the program stored in the memory 12.
  • the memory 12 includes a non-volatile or volatile semiconductor memory (for example, RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), or EEPROM (Electrically Erasable Programmable Read Only Memory). )), And includes magnetic discs, flexible discs, optical discs, compact discs, mini discs, or DVDs (Digital Versatile Discs).
  • the CPU is also called a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, a processor, or a DSP (Digital Signal Processor).
  • FIG. 3 is a flowchart showing a flow of processing performed by the control device 10 of FIG.
  • the process shown in FIG. 3 is called at regular time intervals by the main routine that performs the integrated process of the refrigeration cycle apparatus 100.
  • the step is simply referred to as S.
  • the control device 10 determines in S101 whether or not the pressure Pd is smaller than the reference pressure Pref.
  • the reference pressure Pref is a lower limit value of the pressure Pd that can secure a desired compression ratio (Pd / Ps), and can be appropriately calculated by an actual machine experiment or a simulation.
  • the control device 10 controls the normal operation in S102 and returns the process to the main routine.
  • the control device 10 reduces the opening degree of the expansion valve 6 in S103 and advances the process to S104.
  • the control device 10 determines whether or not the superheat degree SH of the refrigerant discharged from the compressor 1 in S104 is larger than the reference value ⁇ .
  • the reference value ⁇ is a value for determining whether or not the degree of superheat of the refrigerant is small enough to be regarded as 0K, and can be appropriately calculated by an actual machine experiment or a simulation.
  • the control device 10 When the superheat degree SH is larger than the reference value ⁇ (YES in S104), the control device 10 increases the opening degree of the expansion valve 6 in S105 and returns the process to the main routine. When the superheat degree SH is equal to or less than the reference value ⁇ (NO in S104), the control device 10 reduces the opening degree of the expansion valve 6 in S106 and returns the process to the main routine.
  • the refrigeration cycle apparatus 100 it is possible to realize both suppression of a decrease in pressure Pd and suppression of a decrease in temperature Td. By suppressing the decrease in the pressure Pd, it is possible to prevent the pressure Pd from deviating from the allowable range of the compressor 1. By securing a desired compression ratio, the performance of the refrigeration cycle apparatus 100 can be stabilized. Further, by suppressing the decrease in temperature Td, the superheat degree SH of the refrigerant discharged from the compressor 1 can be maintained within a desired range. Since the liquid refrigerant is prevented from being sucked into the compressor 1 and the lubricating oil being diluted by the liquid refrigerant, wear of the compression mechanism of the compressor 1 can be prevented.
  • the reliability of the refrigeration cycle device can be improved.
  • 1 Compressor 1 Compressor, 2 Condenser, 3 HIC, 4 Evaporator, 5-7 Expansion valve, 8 Receiver, 9 Vent pipe, 10 Control device, 11 Processing circuit, 12 Memory, 13 Input / output section, 100 Refrigeration cycle device, FP1 , FP2 flow path, P11 discharge port, P12 suction port, P13 injection port, P71 to P73 ports, Sa1 to Sa3 temperature sensor, Sb1, Sb2 pressure sensor.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

Dispositif à cycle de réfrigération (100), dans lequel un réfrigérant circule dans l'ordre suivant : un compresseur (1), un premier échangeur de chaleur (2), un deuxième échangeur de chaleur (3), une première vanne de détente (5) et un troisième échangeur de chaleur (4). Le dispositif à cycle de réfrigération (100) comprend un récepteur (8), une deuxième vanne de détente (6), un premier trajet d'écoulement (FP1), un second trajet d'écoulement (FP2), un tuyau d'évent (9) et une troisième vanne de détente (7). La deuxième vanne de détente (6) est reliée à un deuxième orifice (P72). Le premier trajet d'écoulement (FP1) relie la deuxième vanne de détente (6) au compresseur (1) par l'intermédiaire du deuxième échangeur de chaleur (3). Le second trajet d'écoulement (FP2) relie le premier échangeur de chaleur (2) au deuxième échangeur de chaleur (3). Le tuyau d'évent (9) relie un troisième orifice (P73) à la partie du premier trajet d'écoulement (FP1) entre la deuxième vanne de détente (6) et le deuxième échangeur de chaleur (3). La troisième vanne de détente (7) est reliée entre le second trajet d'écoulement (FP2) et un premier orifice (P71).
PCT/JP2019/043094 2019-11-01 2019-11-01 Dispositif à cycle de réfrigération WO2021084743A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CN201980101418.2A CN114585866A (zh) 2019-11-01 2019-11-01 制冷循环装置
PCT/JP2019/043094 WO2021084743A1 (fr) 2019-11-01 2019-11-01 Dispositif à cycle de réfrigération
CN202311470009.4A CN117329723A (zh) 2019-11-01 2019-11-01 制冷循环装置
JP2021554030A JPWO2021084743A1 (fr) 2019-11-01 2019-11-01
EP19950515.7A EP4053470A4 (fr) 2019-11-01 2019-11-01 Dispositif à cycle de réfrigération
JP2023201534A JP2024023437A (ja) 2019-11-01 2023-11-29 冷凍サイクル装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/043094 WO2021084743A1 (fr) 2019-11-01 2019-11-01 Dispositif à cycle de réfrigération

Publications (1)

Publication Number Publication Date
WO2021084743A1 true WO2021084743A1 (fr) 2021-05-06

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ID=75716103

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/043094 WO2021084743A1 (fr) 2019-11-01 2019-11-01 Dispositif à cycle de réfrigération

Country Status (4)

Country Link
EP (1) EP4053470A4 (fr)
JP (2) JPWO2021084743A1 (fr)
CN (2) CN117329723A (fr)
WO (1) WO2021084743A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220348054A1 (en) * 2021-04-28 2022-11-03 Nio Technology (Anhui) Co., Ltd. Electric vehicle cabin heating system and control method therefor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240151424A1 (en) * 2022-11-07 2024-05-09 Johnson Controls Tyco IP Holdings LLP Energy efficient heat pump systems and methods

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03294750A (ja) * 1990-04-11 1991-12-25 Mitsubishi Electric Corp 冷凍装置
JP2009156531A (ja) * 2007-12-27 2009-07-16 Mitsubishi Electric Corp 冷凍装置
JP2009243793A (ja) 2008-03-31 2009-10-22 Mitsubishi Electric Corp ヒートポンプ式給湯用室外機
JP2010127531A (ja) * 2008-11-27 2010-06-10 Mitsubishi Electric Corp 冷凍空調装置
JP2010185406A (ja) * 2009-02-13 2010-08-26 Mitsubishi Heavy Ind Ltd インジェクション管
WO2017068642A1 (fr) * 2015-10-20 2017-04-27 三菱電機株式会社 Dispositif à cycle de réfrigération

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5433158B2 (ja) * 2008-03-24 2014-03-05 日立アプライアンス株式会社 冷凍サイクル装置
JP6467682B2 (ja) * 2015-01-09 2019-02-13 パナソニックＩｐマネジメント株式会社 冷凍装置
JP6680600B2 (ja) * 2016-04-14 2020-04-15 サンデン・オートモーティブクライメイトシステム株式会社 車両用空気調和装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03294750A (ja) * 1990-04-11 1991-12-25 Mitsubishi Electric Corp 冷凍装置
JP2009156531A (ja) * 2007-12-27 2009-07-16 Mitsubishi Electric Corp 冷凍装置
JP2009243793A (ja) 2008-03-31 2009-10-22 Mitsubishi Electric Corp ヒートポンプ式給湯用室外機
JP2010127531A (ja) * 2008-11-27 2010-06-10 Mitsubishi Electric Corp 冷凍空調装置
JP2010185406A (ja) * 2009-02-13 2010-08-26 Mitsubishi Heavy Ind Ltd インジェクション管
WO2017068642A1 (fr) * 2015-10-20 2017-04-27 三菱電機株式会社 Dispositif à cycle de réfrigération

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4053470A4

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220348054A1 (en) * 2021-04-28 2022-11-03 Nio Technology (Anhui) Co., Ltd. Electric vehicle cabin heating system and control method therefor

Also Published As

Publication number Publication date
JPWO2021084743A1 (fr) 2021-05-06
JP2024023437A (ja) 2024-02-21
EP4053470A4 (fr) 2022-11-16
CN117329723A (zh) 2024-01-02
EP4053470A1 (fr) 2022-09-07
CN114585866A (zh) 2022-06-03

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