EP4177539A1 - Dispositif de réfrigération - Google Patents

Dispositif de réfrigération Download PDF

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Publication number
EP4177539A1
EP4177539A1 EP21838192.9A EP21838192A EP4177539A1 EP 4177539 A1 EP4177539 A1 EP 4177539A1 EP 21838192 A EP21838192 A EP 21838192A EP 4177539 A1 EP4177539 A1 EP 4177539A1
Authority
EP
European Patent Office
Prior art keywords
user
heat
source
refrigerant
side refrigerant
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.)
Pending
Application number
EP21838192.9A
Other languages
German (de)
English (en)
Inventor
Shun OHKUBO
Tatsumi Tsuchiya
Tsubasa NAKAUE
Takurou Yamada
Satoshi Tokuno
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries 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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of EP4177539A1 publication Critical patent/EP4177539A1/fr
Pending legal-status Critical Current

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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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/10—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point with several cooling stages
    • 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
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • 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
    • F25B49/022—Compressor control 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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • 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
    • F25B2400/12—Inflammable refrigerants
    • 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
    • F25B2400/12—Inflammable refrigerants
    • F25B2400/121—Inflammable refrigerants using R1234
    • 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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary 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
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0253—Compressor control by controlling speed with variable speed
    • 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
    • F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge 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
    • F25B2700/2116—Temperatures of a condenser
    • F25B2700/21163—Temperatures of a condenser of the refrigerant at the outlet of the condenser

Definitions

  • the present disclosure relates to a refrigeration apparatus.
  • Patent Literature 1 and Patent Literature 2 Two-stage refrigeration apparatuses, which include a two-stage refrigerant cycle composed of a user-side heat transfer cycle and a heat-source-side heat transfer cycle, have been proposed (Patent Literature 1 and Patent Literature 2).
  • An object of the present disclosure is to provide a novel multi-stage refrigeration apparatus.
  • a refrigeration apparatus comprising:
  • the refrigeration apparatus according to Item 1 or 2, wherein the user-side heat transfer cycle is a heat transfer cycle comprising a pump, a user-side heat exchanger, and a user-side cascade heat exchanger.
  • the refrigeration apparatus according to any one of Items 1 to 7, wherein the heat-source-side refrigerant is R32, R452B, or R454B, and the user-side refrigerant is at least one member selected from the group consisting of R513A, R515A, R515B, R1224, R1234yf, R1234ze, R1233, and R1336.
  • the refrigeration apparatus according to any one of Items 1 to 8, wherein the heat-source-side refrigerant comprises HFO-1132, and the user-side refrigerant is at least one member selected from the group consisting of R513A, R515A, R515B, R471A, R1224, R1234yf, R1234ze, R1233, and R1336.
  • the present disclosure provides a novel multi-stage refrigeration apparatus that allows the safe use of a refrigerant with a low boiling point, high pressure, high density, and high refrigerating capacity.
  • the refrigeration apparatus of the present disclosure may further include a control device.
  • a detection signal from the user-side high-pressure detection means, a detection signal from the user-side low-pressure detection means, and a detection signal from the user-side discharge temperature detection means are input to the control device.
  • the control device controls the overall operation of the refrigeration apparatus of the present disclosure.
  • the control device may be partially or entirely composed of, for example, a microcomputer, a microprocessor unit, or the like; updateable software such as firmware; or a program module or the like that is executed by a command from a CPU or the like.
  • the heat-source-side refrigerant has a boiling point of -55°C or more and less than -30°C.
  • Examples of the combination of the heat-source-side refrigerant and the user-side refrigerant include a combination of a heat-source-side refrigerant containing HFO-1132 and a user-side refrigerant that is at least one member selected from the group consisting of R513A, R515A, R515B, R471A, R1224, R1234yf, R1234ze, R1233, and R1336. This combination is preferred in that the GWP (t-CO 2 ) of the entire system can be reduced.
  • HFO-1132 refers to HFO-1132a, HFO-1132(E), or HFO-1132(Z).
  • R1224 refers to HCFO-1224yd(E), HCFO-1224yd(Z), HCFO-1224zb(E), HCFO-1224zb(Z), HCFO-1224xe(E), or HCFO-1224xe(Z).
  • R1234 refers to HFO-1234yf, HFO-1234ze(E), or HFO-1234ze(Z).
  • R1233 refers to HCFO-1233zd(E), HCFO-1233zd(Z), or HCFO-1233xf.
  • the refrigeration apparatus of the present disclosure is preferably an air-conditioning system, a refrigerator, a freezer, a water cooler, an ice maker, a refrigerated showcase, a freezing showcase, a freezing and refrigerating unit, a refrigerating machine for freezing and refrigerating warehouses, an air-conditioning system for vehicles, a turbo refrigerating machine, or a screw refrigerating machine.
  • the refrigeration apparatus of the present disclosure is more preferably a household air-conditioning system, an air-conditioning system for business use, an industrial air-conditioning system, or a multi-split air-conditioning system for buildings.
  • the GWP of the entire system was calculated using the following formula.
  • GWP t ⁇ CO 2 of entire system GWP of heat ⁇ source ⁇ side refrigerant ⁇ amount of heat ⁇ source ⁇ side refrigerant put in + GWP of user ⁇ side refrigerant ⁇ amount of user ⁇ side refrigerant put in The lower these values, the less the impact on global warming.
  • a refrigeration apparatus was operated by circulating the user-side refrigerants and the heat-source-side refrigerants shown in Table 2 in the user-side heat transfer cycle and the heat-source-side heat transfer cycle, respectively, as shown in Fig. 1 .
  • the COP ratio and capacity ratio on the heat source side both as ratios (%) relative to those of R410A
  • MPaG saturation vapor pressure
  • results show that by using a refrigerant with a boiling point of 25°C or less as the user-side refrigerant, its saturation vapor pressure can be made equal to or higher than atmospheric pressure. Furthermore, the results show that by using a refrigerant with a boiling point of -30°C or more as the user-side refrigerant, its pressure can be maintained at a level that does not exceed the withstanding pressure limit of the pipe.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
EP21838192.9A 2020-07-06 2021-07-06 Dispositif de réfrigération Pending EP4177539A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020116676 2020-07-06
PCT/JP2021/025511 WO2022009898A1 (fr) 2020-07-06 2021-07-06 Dispositif de réfrigération

Publications (1)

Publication Number Publication Date
EP4177539A1 true EP4177539A1 (fr) 2023-05-10

Family

ID=79553204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21838192.9A Pending EP4177539A1 (fr) 2020-07-06 2021-07-06 Dispositif de réfrigération

Country Status (5)

Country Link
US (1) US20230135967A1 (fr)
EP (1) EP4177539A1 (fr)
JP (2) JP7216151B2 (fr)
CN (1) CN115885139A (fr)
WO (1) WO2022009898A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2615111A (en) * 2022-01-28 2023-08-02 Agilent Technologies Inc Cooling arrangements for analytical device
US20230375230A1 (en) * 2022-05-21 2023-11-23 Honeywell International Inc. Nonflammable refrigerants having low gwp, and systems for and methods of providing refrigeration

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3199419B2 (ja) * 1991-11-13 2001-08-20 松下冷機株式会社 冷暖房装置
JP5133649B2 (ja) 2007-10-16 2013-01-30 京セラドキュメントソリューションズ株式会社 電子機器およびメモリ管理プログラム
CN103635761A (zh) * 2011-08-04 2014-03-12 三菱电机株式会社 冷冻装置
TW201413192A (zh) * 2012-08-01 2014-04-01 Du Pont Ｅ－１，１，１，４，４，４－六氟－２－丁烯在熱泵的使用
JP2014196869A (ja) * 2013-03-29 2014-10-16 パナソニックヘルスケア株式会社 二元冷凍装置
WO2015140872A1 (fr) * 2014-03-17 2015-09-24 三菱電機株式会社 Dispositif de réfrigération
US10254016B2 (en) * 2014-03-17 2019-04-09 Mitsubishi Electric Corporation Refrigeration cycle apparatus and method for controlling refrigeration cycle apparatus
JP2016166714A (ja) * 2015-03-10 2016-09-15 パナソニックＩｐマネジメント株式会社 熱生成ユニット
WO2019123805A1 (fr) * 2017-12-18 2019-06-27 ダイキン工業株式会社 Composition contenant un fluide frigorigène, utilisation de ladite composition, réfrigérateur comprenant ladite composition, et procédé de fonctionnement dudit réfrigérateur
CN112752937B (zh) 2018-09-28 2022-09-02 大金工业株式会社 制冷剂填充方法、热源单元及更新的冷冻循环装置

Also Published As

Publication number Publication date
JP7216151B2 (ja) 2023-01-31
CN115885139A (zh) 2023-03-31
WO2022009898A1 (fr) 2022-01-13
US20230135967A1 (en) 2023-05-04
JP2022125358A (ja) 2022-08-26
JP2022014455A (ja) 2022-01-19

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