WO2022009312A1 - 冷凍サイクル装置 - Google Patents

冷凍サイクル装置 Download PDF

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Publication number
WO2022009312A1
WO2022009312A1 PCT/JP2020/026569 JP2020026569W WO2022009312A1 WO 2022009312 A1 WO2022009312 A1 WO 2022009312A1 JP 2020026569 W JP2020026569 W JP 2020026569W WO 2022009312 A1 WO2022009312 A1 WO 2022009312A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
port
state
switching valve
compressor
Prior art date
Application number
PCT/JP2020/026569
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
孔明 仲島
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 EP20944786.1A priority Critical patent/EP4180742A4/de
Priority to CN202080102589.XA priority patent/CN115803571A/zh
Priority to PCT/JP2020/026569 priority patent/WO2022009312A1/ja
Priority to US17/922,545 priority patent/US20230175744A1/en
Priority to AU2020457289A priority patent/AU2020457289B2/en
Priority to JP2022534537A priority patent/JP7357793B2/ja
Publication of WO2022009312A1 publication Critical patent/WO2022009312A1/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
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control 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
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing 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
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02742—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves

Definitions

  • This disclosure relates to a refrigeration cycle device.
  • Patent Document 1 discloses a refrigerating cycle apparatus including a compressor, a first heat exchanger, a decompression device, a second heat exchanger, and a refrigerant circuit having a flow path switching valve. Has been done.
  • this refrigeration cycle device the first operation in which the refrigerant is circulated in the order of the compressor, the first heat exchanger, the decompression device, and the second heat exchanger by switching the state of the flow path switching valve, and the compressor. It is possible to switch between the second heat exchanger, the decompressor, and the second operation in which the refrigerant is circulated in this order in the order of the first heat exchanger.
  • the pressure distribution of the refrigerant differs between the first operation and the second operation described above. Specifically, in the first operation, the high-pressure refrigerant is distributed in the first heat exchanger and the low-pressure refrigerant is distributed in the second heat exchanger, while in the second operation, the high-pressure refrigerant is distributed in the second heat exchanger. Then, the low-pressure refrigerant is distributed in the first heat exchanger. Therefore, when switching from one of the first operation and the second operation to the other, the pressure distribution of the refrigerant is disrupted, and as a result, the time required for the refrigeration cycle to stabilize after the operation switching becomes long. Is a concern.
  • the refrigeration cycle apparatus includes a first operation in which a compressor, a first heat exchanger, a decompression device, and a second heat exchanger are circulated in this order, a compressor, a second heat exchanger, a decompression device, and a decompression cycle apparatus. It is a refrigeration cycle device that can switch the operation between the second operation that circulates the refrigerant in the order of the first heat exchanger, the discharge port of the compressor, one port of the first heat exchanger, and the second heat exchange.
  • the first switching valve connected to one port of the vessel and one port of the decompressor, the suction port of the compressor, the other port of the first heat exchanger, the other port of the second heat exchanger, and It is connected to the other port of the decompression device and includes a second switching valve and a control device for controlling the first switching valve and the second switching valve.
  • the first switching valve is the first state in which one port of the second heat exchanger and one port of the decompression device are connected while connecting the discharge port of the compressor and one port of the first heat exchanger. , Switching to either the second state where one port of the first heat exchanger and one port of the decompression device are connected while connecting the discharge port of the compressor and one port of the second heat exchanger. It is configured to be possible.
  • the control device When switching to the second operation is requested during the first operation, the control device performs the first switching operation in which the first switching valve is set to the second state and the second switching valve is set to the fifth state, and the first switching operation is performed. After the operation is performed, the operation of the refrigeration cycle device is switched to the second operation.
  • the refrigeration cycle device capable of switching the operation between the second operation in which the refrigerant is circulated in the order of the heat exchanger the time required for the refrigeration cycle to stabilize after the operation switching can be shortened.
  • FIG. It is a figure which shows typically an example of the whole structure of the refrigerating cycle apparatus by Embodiment 1.
  • FIG. It is a perspective view which shows an example of the internal structure of the 2nd switching valve. It is a figure which shows the rotation position of the valve body when the 2nd switching valve is a 3rd state. It is a figure which shows the rotation position of the valve body when the 2nd switching valve is a 4th state. It is a figure which shows the rotation position of the valve body when the 2nd switching valve is in the 5th state. It is a figure (the 1) which shows the state in the 1st cooling operation of a refrigerant circuit. It is a figure (the 1) which shows the state in the 2nd cooling operation of a refrigerant circuit.
  • the refrigerant circuit RC connects the compressor 10, the first heat exchanger 20, the decompression device 30, and the second heat exchanger 40 by pipes 51 to 58, a first switching valve 60, and a second switching valve 70. , It constitutes a circulation flow path in which the refrigerant circulates.
  • a refrigerant with a phase change such as carbon dioxide and R410A circulates inside the refrigerant circuit RC.
  • the decompression device 30 decompresses the high-pressure refrigerant.
  • a device provided with a valve body whose opening degree can be adjusted in response to a command from the control device 100 for example, an electronically controlled expansion valve can be used.
  • the pipe 51 is connected to the pipe 56 and the pipe 52 is connected to the pipe 55.
  • the discharge port of the compressor 10 is connected to one port of the second heat exchanger 40, and one port of the first heat exchanger 20 is connected to one port of the decompression device 30.
  • the second switching valve 70 has a port connected to the suction port of the compressor 10 via the pipe 58, a port connected to the other port of the first heat exchanger 20 via the pipe 53, and the pipe 57. It is a four-way valve having a port connected to the other port of the second heat exchanger 40 via a pipe 54 and a port connected to the other port of the decompression device 30 via a pipe 54.
  • the pipe 57 is connected to the pipe 54 and the pipe 53 is connected to the pipe 58.
  • the other port of the second heat exchanger 40 is connected to the other port of the decompression device 30, and the other port of the first heat exchanger 20 is connected to the suction port of the compressor 10.
  • FIG. 6 is a diagram showing a state of the refrigerant circuit RC during the first cooling operation.
  • the control device 100 operates the compressor 10 and puts the first switching valve 60 in the first state and the second switching valve 70 in the third state.
  • the control device 100 determines that switching to the first cooling operation is requested, and switches to the first cooling operation.
  • the first heat exchanger 20 that has functioned as an evaporator now functions as a condenser, so that the frost adhering to the first heat exchanger 20 can be removed.
  • the control device 100 sets the first switching valve 60 before switching to the second cooling operation.
  • the "first switching operation" in which the second switching valve 70 is set to the fifth state in the second state is performed for a certain period of time.
  • FIG. 11 is a diagram showing a state of the refrigerant circuit RCA during the first cooling operation.
  • FIG. 12 is a diagram showing a state of the refrigerant circuit RCA during the first switching operation.
  • FIG. 13 is a diagram showing a state of the refrigerant circuit RCA during the second cooling operation.
  • FIG. 14 is a diagram showing a state of the refrigerant circuit RCA during the second switching operation.
  • the indoor air is blown in the order of the second heat exchanger 40 and the third heat exchanger 42 during the first cooling operation. Therefore, of the second heat exchanger 40 and the third heat exchanger 42 that function as an evaporator during the first cooling operation (that is, frost may adhere to them), they function as a condenser after switching to the second cooling operation. It is possible to positively attach frost to the second heat exchanger 40 and make it difficult for frost to adhere to the third heat exchanger 42, which functions as an evaporator even after switching to the second cooling operation. As a result, when the second cooling operation is subsequently switched to defrost, only the second heat exchanger 40 to which a large amount of frost is attached can be defrosted, so that efficient defrosting operation can be performed. can.
  • the moisture in the room air is adsorbed by the adsorbent of the first heat exchanger 20 as it passes through the first heat exchanger 20. Therefore, the indoor air blown to the third heat exchanger 42 after passing through the first heat exchanger 20 is in a dry state. As a result, it is possible to prevent frost from adhering to the third heat exchanger 42.
  • Embodiment 3. 15 to 18 schematically show an example of the configuration of the refrigerant circuit RCb of the refrigeration cycle apparatus according to the third embodiment.
  • the refrigerant circuit RCb according to the third embodiment is an addition of the fourth heat exchanger 44 to the refrigerant circuit RCA according to the second embodiment described above.
  • Other configurations of the refrigerant circuit RCb are the same as those of the refrigerant circuit RCA.
  • other configurations and operations of the refrigerating cycle apparatus according to the third embodiment are the same as those of the refrigerating cycle apparatus 1 shown in FIG. 1 above.
  • the fourth heat exchanger 44 is arranged between the discharge port of the compressor 10 and the first switching valve 60.
  • the fourth heat exchanger 44 exchanges heat between the refrigerant discharged from the compressor 10 and the external air.
  • the states of the compressor 10, the first switching valve 60, the second switching valve 70, the first blower device 80, and the second blower device 90 during each operation are basically controlled in the same manner as in the second embodiment described above. Will be done.
  • the indoor air is brought into the second heat exchanger 40 and the third heat by operating the fans 81 and 91 and setting the air passage switches 83, 83a and 83b to the states shown in FIG.
  • the first heat exchanger 20 can be the destination for blowing the outdoor air while blowing the air in the order of the exchanger 42.
  • the air passage switches 83, 83a, 83b are brought into the state shown in FIG. 22 while operating the fans 81, 91, so that the indoor air is brought into the first heat exchangers 20, the third.
  • the second heat exchanger 40 can be the destination of the outdoor air while blowing air in the order of the heat exchanger 42.
  • FIG. 23 and 24 are diagrams showing configuration examples of the first blower 80A and the second blower 90B suitable for the refrigeration cycle device according to the third embodiment described above. Note that FIG. 23 shows a state during the first cooling operation according to the third embodiment (see FIG. 15), and FIG. 24 shows a state during the second cooling operation according to the third embodiment (see FIG. 17).
  • Refrigeration cycle device 10 compressor, 20 1st heat exchanger, 30, 32 decompression device, 40 2nd heat exchanger, 42 3rd heat exchanger, 44 4th heat exchanger, 51-58 piping, 60th 1 switching valve, 70 2nd switching valve, 71 container, 72 valve body, 73-75 flow path, 76 rotary shaft, 80, 80A 1st blower, 81, 91 fan, 82, 82a, 82b, 92, 92a, 92b, 92c, 92d air passage, 83, 83a, 83b air passage switch, 90, 90A second blower, 100 control device, RC, RCa, RCb refrigerant circuit.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Air Conditioning Control Device (AREA)
PCT/JP2020/026569 2020-07-07 2020-07-07 冷凍サイクル装置 WO2022009312A1 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP20944786.1A EP4180742A4 (de) 2020-07-07 2020-07-07 Kältekreislaufvorrichtung
CN202080102589.XA CN115803571A (zh) 2020-07-07 2020-07-07 制冷循环装置
PCT/JP2020/026569 WO2022009312A1 (ja) 2020-07-07 2020-07-07 冷凍サイクル装置
US17/922,545 US20230175744A1 (en) 2020-07-07 2020-07-07 Refrigeration cycle apparatus
AU2020457289A AU2020457289B2 (en) 2020-07-07 2020-07-07 Refrigeration cycle device
JP2022534537A JP7357793B2 (ja) 2020-07-07 2020-07-07 冷凍サイクル装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/026569 WO2022009312A1 (ja) 2020-07-07 2020-07-07 冷凍サイクル装置

Publications (1)

Publication Number Publication Date
WO2022009312A1 true WO2022009312A1 (ja) 2022-01-13

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ID=79552325

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Application Number Title Priority Date Filing Date
PCT/JP2020/026569 WO2022009312A1 (ja) 2020-07-07 2020-07-07 冷凍サイクル装置

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US (1) US20230175744A1 (de)
EP (1) EP4180742A4 (de)
JP (1) JP7357793B2 (de)
CN (1) CN115803571A (de)
AU (1) AU2020457289B2 (de)
WO (1) WO2022009312A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6073071U (ja) * 1983-10-27 1985-05-23 株式会社東芝 ヒ−トポンプ式冷凍装置
JPH04254158A (ja) * 1991-01-31 1992-09-09 Daikin Ind Ltd ヒートポンプ式空気調和装置の冷凍サイクル
US6817205B1 (en) * 2003-10-24 2004-11-16 Carrier Corporation Dual reversing valves for economized heat pump
JP2005134099A (ja) 2003-10-09 2005-05-26 Daikin Ind Ltd 空気調和装置
JP2015075188A (ja) * 2013-10-10 2015-04-20 日立アプライアンス株式会社 冷媒切替弁および冷媒切替弁を備える機器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4254158B2 (ja) 2001-08-20 2009-04-15 東レ株式会社 炭素繊維基材の製造方法、プリフォームの製造方法および複合材料の製造方法
JP6073071B2 (ja) 2012-04-25 2017-02-01 京セラ株式会社 電子機器
US10571173B2 (en) * 2016-06-14 2020-02-25 Mitsubishi Electric Corporation Air conditioning system
JP6758500B2 (ja) 2017-06-27 2020-09-23 三菱電機株式会社 空気調和装置
US20220307736A1 (en) * 2021-03-23 2022-09-29 Emerson Climate Technologies, Inc. Heat-Pump System With Multiway Valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6073071U (ja) * 1983-10-27 1985-05-23 株式会社東芝 ヒ−トポンプ式冷凍装置
JPH04254158A (ja) * 1991-01-31 1992-09-09 Daikin Ind Ltd ヒートポンプ式空気調和装置の冷凍サイクル
JP2005134099A (ja) 2003-10-09 2005-05-26 Daikin Ind Ltd 空気調和装置
US6817205B1 (en) * 2003-10-24 2004-11-16 Carrier Corporation Dual reversing valves for economized heat pump
JP2015075188A (ja) * 2013-10-10 2015-04-20 日立アプライアンス株式会社 冷媒切替弁および冷媒切替弁を備える機器

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Publication number Publication date
EP4180742A4 (de) 2023-08-09
JPWO2022009312A1 (de) 2022-01-13
US20230175744A1 (en) 2023-06-08
AU2020457289A1 (en) 2022-12-22
AU2020457289B2 (en) 2023-11-23
CN115803571A (zh) 2023-03-14
EP4180742A1 (de) 2023-05-17
JP7357793B2 (ja) 2023-10-06

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