EP3252402A1 - Pompe à chaleur - Google Patents

Pompe à chaleur Download PDF

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Publication number
EP3252402A1
EP3252402A1 EP16743317.6A EP16743317A EP3252402A1 EP 3252402 A1 EP3252402 A1 EP 3252402A1 EP 16743317 A EP16743317 A EP 16743317A EP 3252402 A1 EP3252402 A1 EP 3252402A1
Authority
EP
European Patent Office
Prior art keywords
refrigerant
path
heat exchanger
pump
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16743317.6A
Other languages
German (de)
English (en)
Other versions
EP3252402A4 (fr
EP3252402B1 (fr
Inventor
Hideshi Okada
Makoto Asai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yanmar Power Technology Co Ltd
Original Assignee
Yanmar Co Ltd
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 Yanmar Co Ltd filed Critical Yanmar Co Ltd
Publication of EP3252402A1 publication Critical patent/EP3252402A1/fr
Publication of EP3252402A4 publication Critical patent/EP3252402A4/fr
Application granted granted Critical
Publication of EP3252402B1 publication Critical patent/EP3252402B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/02—Subcoolers
    • 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
    • F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
    • 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
    • F25B2327/00—Compressor driving means
    • 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—Component parts or details not otherwise provided for in this subclass
    • F25B2400/16—Receivers
    • 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—Component parts or details not otherwise provided for in this subclass
    • F25B2400/19—Pumping down refrigerant from one part of the cycle to another part of the cycle, e.g. when the cycle is changed from cooling to heating, or before a defrost cycle is started
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
    • F25B2500/222—Detecting refrigerant leaks
    • 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

Definitions

  • the heat pump 100 circulates the refrigerant between the heat source-side heat exchanger 20 and the utilization-side heat exchanger 50 while repeating a cold state where the refrigerant is depressurized and a hot state where the refrigerant is pressurized. Thereby, the heat pump 100 performs a heating operation for heating (for example, heating indoors) a temperature control target (for example, indoor air) and a cooling operation for cooling (for example, cooling indoors) the temperature control target (for example, indoor air) in a utilization-side heat exchange section 101, as described later.
  • a heating operation for heating for example, heating indoors
  • a temperature control target for example, indoor air
  • cooling operation for cooling for cooling indoors
  • the temperature control target for example, indoor air
  • the heat pump 100 is further equipped with a second changeover valve 116.
  • the refrigerant circuit 110 further includes a twelfth refrigerant path 113l.
  • the engine speed sensor 170 is provided at the engine 60, and detects the engine speed which is the number of rotations of the engine 60 (the number of rotations per unit time).
  • the control device 120 switches the four-way valve 111 into the first connection state in which communication is provided between the first refrigerant path 113a and the eighth refrigerant path 113h and between the third refrigerant path 113c and the second refrigerant path 113b. Accordingly, the refrigerant in a high-pressure gaseous state (hereinafter called a high-pressure gas refrigerant) discharged from the compressor 10 passes the oil separator 81 in the first refrigerant path 113a, and flows through the four-way valve 111, the eighth refrigerant path 113h, and the second communicating pipe 110b, to the utilization-side heat exchanger 50.
  • a high-pressure gas refrigerant a high-pressure gaseous state
  • the high-pressure liquid refrigerant which flows from the sixth refrigerant path 113f to the ninth refrigerant path 113i passes the regulating valve 73 for the auxiliary refrigerant evaporator.
  • the heat pump 100 repeats a series of above-described actions for the cooling operation in a similar manner.
  • the pump-down operation is based on the cooling operation.
  • the control device 120 keeps the first changeover valve 114 open, and fully opens the first regulating valve 41. If the degree of superheat is equal to or greater than a predetermined value (a second predetermined value), the control device 120 causes the third changeover valve 117 to open and allows circulation of the refrigerant from the refrigerant-liquid-level outlet port 71c of the receiver 71 to the supercooling heat exchanger 91. If the degree of superheat is less than the predetermined value (the second predetermined value), the control device 120 causes the third changeover valve 117 to close.
  • a predetermined value a predetermined value
  • the control device 120 causes the third changeover valve 117 to close.
  • the heat pump 100 is configured such that the control device 120 detects the amount of liquid refrigerant R in the receiver 71 in the pump-down operation (in this example, every time the pump-down operation is performed) and thereby determines the occurrence or non-occurrence of refrigerant leakage.
  • the control device 120 detects the amount of liquid refrigerant R in the receiver 71 in the pump-down operation (in this example, every time the pump-down operation is performed) and thereby determines the occurrence or non-occurrence of refrigerant leakage.
  • Specific embodiments for determining the occurrence or non-occurrence of refrigerant leakage are described by way of the first embodiment and the second embodiment given below.
  • the second predetermined time can be set to be equal to or longer than a period of time during which it is assumed that all of the refrigerant (for example, the liquid refrigerant or the gas-liquid two-phase refrigerant) staying in the refrigerant path, the degree of superheat of which is smaller than the predetermined value (the second predetermined value) flows.
  • the refrigerant for example, the liquid refrigerant or the gas-liquid two-phase refrigerant
  • Fig. 7 is a flowchart describing an example of control actions in the second embodiment by the control device 120 in the heat pump 100.
  • the exemplary control actions shown in Fig. 7 are similar to those in Fig. 6 , except for additional Steps S11, S12 between Step S10 and Step S20.
  • Step S12 the control device 120 judges whether the measured timer time has reached the second predetermined time. If the measured timer time has not reached the second predetermined time (No in Step S12), the process goes back to Step S11, and the control device 120 waits until the second predetermined time has passed. If the measured timer time has reached the second predetermined time (Yes in Step S12), the process goes to Step S20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
EP16743317.6A 2015-01-28 2016-01-26 Pompe à chaleur Active EP3252402B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015014140A JP6404727B2 (ja) 2015-01-28 2015-01-28 ヒートポンプ
PCT/JP2016/052069 WO2016121714A1 (fr) 2015-01-28 2016-01-26 Pompe à chaleur

Publications (3)

Publication Number Publication Date
EP3252402A1 true EP3252402A1 (fr) 2017-12-06
EP3252402A4 EP3252402A4 (fr) 2018-01-24
EP3252402B1 EP3252402B1 (fr) 2022-03-02

Family

ID=56543327

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16743317.6A Active EP3252402B1 (fr) 2015-01-28 2016-01-26 Pompe à chaleur

Country Status (3)

Country Link
EP (1) EP3252402B1 (fr)
JP (1) JP6404727B2 (fr)
WO (1) WO2016121714A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108344108A (zh) * 2018-02-01 2018-07-31 青岛海尔空调器有限总公司 一种应用电化学压缩机的空调及氢气泄漏检测方法、装置
EP3647684A1 (fr) * 2018-10-31 2020-05-06 Vaillant GmbH Zone de sécurité du condenseur
US11441820B2 (en) 2018-09-06 2022-09-13 Carrier Corporation Refrigerant leak detection system
US11525612B2 (en) 2017-11-21 2022-12-13 Bitzer Electronics A/S Method for refrigerant charge determination in a cooling circuit
WO2023084127A1 (fr) * 2021-11-15 2023-05-19 Maersk Container Industry A/S Système de réfrigération et procédé de détermination d'un état de charge de fluide frigorigène à l'intérieur de celui-ci
EP4286773A1 (fr) * 2022-06-01 2023-12-06 Carrier Corporation Unité de réfrigération de transport et procédé de mesure de la quantité de réfrigérant dans celle-ci

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6739292B2 (ja) * 2016-08-30 2020-08-12 大阪瓦斯株式会社 ヒートポンプシステムの検査方法、及び、ヒートポンプシステム
WO2018078729A1 (fr) * 2016-10-25 2018-05-03 三菱電機株式会社 Dispositif à cycle de réfrigération
JP6979921B2 (ja) * 2018-04-25 2021-12-15 大阪瓦斯株式会社 ヒートポンプシステムの検査方法、及びヒートポンプシステム
CN111433514B (zh) * 2018-09-05 2022-04-08 富士电机株式会社 热泵式蒸汽生成装置
JP2020085385A (ja) * 2018-11-29 2020-06-04 ダイキン工業株式会社 冷凍サイクル装置及び冷凍サイクルシステム

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6358073A (ja) * 1986-08-27 1988-03-12 自動車機器技術研究組合 冷房装置
JPH10103820A (ja) * 1996-09-27 1998-04-24 Sanyo Electric Co Ltd 冷凍装置
JP2002286333A (ja) * 2001-03-28 2002-10-03 Mitsubishi Electric Corp 冷凍装置
JP3719246B2 (ja) * 2003-01-10 2005-11-24 ダイキン工業株式会社 冷凍装置及び冷凍装置の冷媒量検出方法
JP2005282885A (ja) * 2004-03-29 2005-10-13 Mitsubishi Heavy Ind Ltd 空気調和装置
JP2007093141A (ja) * 2005-09-29 2007-04-12 Sanyo Electric Co Ltd 冷凍装置
JP5410114B2 (ja) * 2009-02-20 2014-02-05 三洋電機株式会社 冷凍装置
JP5789756B2 (ja) * 2010-11-30 2015-10-07 パナソニックＩｐマネジメント株式会社 冷凍装置
WO2013084510A1 (fr) * 2011-12-09 2013-06-13 ダイキン工業株式会社 Dispositif de réfrigération pour un récipient
JP5999499B2 (ja) * 2012-11-09 2016-09-28 パナソニックＩｐマネジメント株式会社 冷凍装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11525612B2 (en) 2017-11-21 2022-12-13 Bitzer Electronics A/S Method for refrigerant charge determination in a cooling circuit
CN108344108A (zh) * 2018-02-01 2018-07-31 青岛海尔空调器有限总公司 一种应用电化学压缩机的空调及氢气泄漏检测方法、装置
US11441820B2 (en) 2018-09-06 2022-09-13 Carrier Corporation Refrigerant leak detection system
EP3647684A1 (fr) * 2018-10-31 2020-05-06 Vaillant GmbH Zone de sécurité du condenseur
WO2023084127A1 (fr) * 2021-11-15 2023-05-19 Maersk Container Industry A/S Système de réfrigération et procédé de détermination d'un état de charge de fluide frigorigène à l'intérieur de celui-ci
EP4286773A1 (fr) * 2022-06-01 2023-12-06 Carrier Corporation Unité de réfrigération de transport et procédé de mesure de la quantité de réfrigérant dans celle-ci
US12498155B2 (en) 2022-06-01 2025-12-16 Carrier Corporation Transportation refrigeration unit and method of measuring quantity of refrigerant in the same

Also Published As

Publication number Publication date
WO2016121714A1 (fr) 2016-08-04
JP2016138714A (ja) 2016-08-04
JP6404727B2 (ja) 2018-10-17
EP3252402A4 (fr) 2018-01-24
EP3252402B1 (fr) 2022-03-02

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