WO2022009898A1 - Dispositif de réfrigération - Google Patents

Dispositif de réfrigération Download PDF

Info

Publication number
WO2022009898A1
WO2022009898A1 PCT/JP2021/025511 JP2021025511W WO2022009898A1 WO 2022009898 A1 WO2022009898 A1 WO 2022009898A1 JP 2021025511 W JP2021025511 W JP 2021025511W WO 2022009898 A1 WO2022009898 A1 WO 2022009898A1
Authority
WO
WIPO (PCT)
Prior art keywords
refrigerant
user
heat source
heat
refrigerating
Prior art date
Application number
PCT/JP2021/025511
Other languages
English (en)
Japanese (ja)
Inventor
瞬 大久保
立美 土屋
翼 仲上
拓郎 山田
敏 徳野
Original Assignee
ダイキン工業株式会社
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 ダイキン工業株式会社 filed Critical ダイキン工業株式会社
Priority to EP21838192.9A priority Critical patent/EP4177539A4/fr
Priority to CN202180048552.8A priority patent/CN115885139A/zh
Publication of WO2022009898A1 publication Critical patent/WO2022009898A1/fr
Priority to US18/088,991 priority patent/US20230135967A1/en

Links

Images

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

  • This disclosure relates to refrigeration equipment.
  • Patent Documents 1 and 2 A so-called dual freezing device having a dual refrigerant cycle of a heat transfer cycle on the user side and a heat transfer cycle on the heat source side has been proposed (Patent Documents 1 and 2).
  • the challenge is to provide a new multi-dimensional refrigeration system.
  • Item 1 The user-side heat transfer cycle that circulates the user-side refrigerant and A heat transfer cycle that circulates the heat source side refrigerant and a heat transfer cycle that circulates the heat source side refrigerant.
  • a cascade heat exchanger that exchanges heat between the refrigerant on the user side and the refrigerant on the heat source side. Equipped with The refrigerating apparatus, wherein the utilization-side refrigerant is a refrigerant having a boiling point of ⁇ 30 ° C. or higher and 25 ° C. or lower, and the heat source-side refrigerant is a refrigerant having a boiling point of ⁇ 55 ° C. or higher and lower than ⁇ 30 ° C.
  • the refrigerating apparatus according to Item 1 which is a steam compression refrigerating cycle having a heat source side compressor, a heat source side heat exchanger, a heat source side decompressing device, and a heat source side cascade heat exchanger.
  • Item 3. The heat transfer cycle on the user side Item 2.
  • the refrigerating apparatus according to Item 1 or 2 which is a steam compression refrigerating cycle having a user-side compressor, a user-side heat exchanger, a user-side decompression device, and a user-side cascade heat exchanger.
  • the refrigerating apparatus according to Item 1 or 2 which is a heat transfer cycle having a pump, a user-side heat exchanger, and a user-side cascade heat exchanger.
  • Item 5. Item 2. The refrigerating apparatus according to any one of Items 1 to 4, wherein the heat source side refrigerant and the user side refrigerant have a countercurrent flow in the cascade heat exchanger.
  • Item 6. Item 2. The freezing according to any one of Items 1 to 5, wherein the heat source side refrigerant is a refrigerant having a combustion speed of 10 cm / s or less, and the user side refrigerant is a refrigerant having a combustion speed of 3 cm / s or less.
  • Device. Item 7. Item 2.
  • Item 8. Item 6. The refrigerating apparatus according to any one of Items 1 to 5, wherein the heat source side refrigerant contains HFO-1123 and / or HFO-1132.
  • the heat source side refrigerant is R32, R452B or R454B
  • the utilization side refrigerant is at least one selected from the group consisting of R513A, R515A, R515B, R1224, R1234yf, R1234ze, R1233 and R1336.
  • the refrigerating apparatus according to any one of 7 to 7. Item 10.
  • the heat source side refrigerant is a refrigerant containing HFO-1132
  • the utilization side refrigerant is at least one selected from the group consisting of R513A, R515A, R515B, R471A, R1224, R1234yf, R1234ze, R1233 and R1336.
  • the refrigerating apparatus according to any one of Items 1 to 8.
  • Items 1 to 8. Air-conditioning equipment, refrigerators, freezers, water coolers, ice machines, refrigerating showcases, refrigerating showcases, refrigerating and refrigerating units, refrigerating and refrigerating warehouse refrigerators, in-vehicle air-conditioning equipment, turbo refrigerators or screw refrigerators, Item 1 to The refrigerating apparatus according to any one of 10.
  • the refrigeration equipment of the present disclosure is The user-side heat transfer cycle that circulates the user-side refrigerant and A heat transfer cycle that circulates the heat source side refrigerant and a heat transfer cycle that circulates the heat source side refrigerant.
  • a cascade heat exchanger that exchanges heat between the refrigerant on the user side and the refrigerant on the heat source side. Equipped with The utilization-side refrigerant is a refrigerant having a boiling point of ⁇ 30 ° C. or higher and 25 ° C. or lower, and the heat source-side refrigerant is a refrigerant having a boiling point of ⁇ 55 ° C. or higher and lower than ⁇ 30 ° C.
  • the heat source side refers to the outdoor unit side, and is also referred to as the high source side, high temperature side, and primary side. From the viewpoint of improving performance, it is preferable to use a refrigerant having excellent refrigerant characteristics on the heat source side.
  • the user side refers to the indoor unit side, and is also referred to as a low source side, a load side, a low temperature side, and a secondary side. From the viewpoint of directly cooling people and objects, it is preferable to use a highly safe refrigerant on the user side.
  • the refrigerating apparatus of the present disclosure is a so-called multi-dimensional refrigerating apparatus having at least a dual heat transfer cycle of a heat transfer cycle (load heat medium circuit) on the user side and a heat medium circuit on the heat source side.
  • the refrigerating apparatus of the present disclosure may include three or more heat transfer cycles.
  • the cascade heat exchanger has a heat source side cascade heat exchanger and a user side cascade heat exchanger in the case of cooling operation, and exchanges heat. Specifically, in the case of cooling operation, the refrigerant is condensed in the user-side cascade heat exchanger and the refrigerant is evaporated in the heat source-side cascade heat exchanger, so that heat is transferred from the user side to the heat source side.
  • the user-side heat transfer cycle circulates the user-side refrigerant.
  • the heat transfer cycle on the user side may be a steam compression type refrigeration cycle.
  • the user-side refrigeration cycle which is a steam compression type refrigeration cycle, has a user-side compressor, a user-side heat exchanger, a user-side decompression device, and a user-side cascade heat exchanger.
  • the heat transfer cycle on the user side may be a pump type heat transfer cycle.
  • the utilization side heat transfer cycle which is a pump type heat transfer cycle, includes a pump, a utilization side heat exchanger, and a utilization side cascade heat exchanger.
  • an expansion valve 13 or the like can be used as the user-side pressure reducing device.
  • another decompression device such as a capillary tube can be used as the decompression device on the user side.
  • the user side heat exchanger can also be used as a cold heat source.
  • the user-side cascade heat exchanger 12 and the user-side expansion valve 13 are used.
  • the liquid receiver 15 may be arranged in a pipe communicating with the water receiver 15.
  • the user-side heat transfer cycle has a user-side high-pressure pressure detecting means for detecting the high-pressure pressure of the user-side heat transfer cycle and a user-side low-pressure pressure detecting means for detecting the low-pressure pressure of the user-side heat transfer cycle. Is preferable. Further, it is preferable that the user-side heat transfer cycle has a user-side discharge temperature detecting means for detecting the temperature of the user-side refrigerant discharged from the user-side compressor.
  • the user-side high-pressure pressure detecting means and the user-side low-pressure pressure detecting means may be any means that substantially detect the pressure. That is, the user-side high-pressure pressure detecting means and the user-side low-pressure pressure detecting means may detect the pressure of the user-side refrigerant itself, or may detect other physical quantities that can be converted into the pressure of the user-side refrigerant.
  • the discharge temperature detecting means on the user side may be any means that substantially detects the temperature. That is, the user-side discharge temperature detecting means may detect the discharge temperature of the user-side refrigerant itself, or may detect another physical quantity that can be converted into the discharge temperature of the user-side refrigerant.
  • the user-side heat transfer cycle 10 includes a user-side high-pressure pressure sensor 21 which is a user-side high-pressure pressure detecting means, a user-side low-pressure pressure sensor 22 which is a user-side low-pressure pressure detecting means, and a user-side low-pressure pressure sensor 22. It has a user-side discharge temperature sensor 23 which is a user-side discharge temperature detecting means.
  • the user-side high-pressure pressure sensor 21 is preferably arranged in a pipe that communicates between the user-side cascade heat exchanger 12 and the user-side expansion valve 13.
  • the user-side low-pressure pressure sensor 22 is preferably arranged in a pipe that communicates between the user-side heat exchanger 14 and the user-side compressor 11.
  • the user-side discharge temperature sensor 23 is preferably arranged in a pipe that communicates between the user-side compressor 11 and the user-side condenser 12.
  • the user-side heat transfer cycle may not have some or all of these sensors if not required.
  • the refrigerating device of the present disclosure may further have a control device.
  • the detection signal of the user-side high-pressure pressure detecting means, the detection signal of the user-side low-pressure pressure detecting means, and the detection signal of the user-side discharge temperature detecting means are input to the control device.
  • the control device controls the overall operation of the refrigerating device of the present disclosure. All or part of the control device may be composed of, for example, a microcomputer or a microprocessor unit; updatable software such as firmware; or a program module executed by a command from a CPU or the like.
  • the user-side refrigerant has a boiling point of -30 ° C or higher and 25 ° C or lower.
  • the heat transfer cycle on the heat source side circulates the refrigerant on the heat source side.
  • the heat transfer cycle on the heat source side is preferably a steam compression refrigeration cycle.
  • the heat source side refrigeration cycle which is a steam compression type refrigeration cycle, includes a heat source side compressor, a heat source side heat exchanger, a heat source side decompression device, and a heat source side cascade heat exchanger.
  • the heat source side compressor is a variable capacity type.
  • An expansion valve or the like can be used as the heat source side decompression device.
  • another decompression device such as a capillary tube can be used.
  • the heat source side refrigerant is a refrigerant having a boiling point of ⁇ 55 ° C. or higher and lower than ⁇ 30 ° C.
  • the user-side condenser and the heat source-side evaporator are built in the cascade heat exchanger.
  • a non-co-boiling mixed refrigerant is used, in the cascade heat exchanger, the refrigerant on the user side of the condenser on the user side and the refrigerant on the heat source side of the evaporator on the heat source side exchange heat.
  • the heat source side refrigerant and the user side refrigerant have a countercurrent flow direction in the cascade heat exchanger from the viewpoint of preventing a decrease in heat exchange efficiency due to temperature glide.
  • the user-side evaporator and the heat source-side condenser are built in the cascade heat exchanger.
  • the refrigerant on the user side of the evaporator on the user side and the refrigerant on the heat source side of the condenser on the heat source side exchange heat.
  • the heat source side refrigerant and the user side refrigerant have a countercurrent flow direction in the cascade heat exchanger from the viewpoint of preventing a decrease in heat exchange efficiency due to temperature glide.
  • the efficiency of the refrigeration cycle is maintained within a preferable range by using a refrigerant having a boiling point of ⁇ 55 ° C. or higher and lower than ⁇ 30 ° C., which has a relatively high density and good performance, as the heat source side refrigerant.
  • a refrigerant having a boiling point of ⁇ 30 ° C. or higher and 25 ° C. or lower can be used as the user-side refrigerant.
  • a refrigerant having a boiling point of ⁇ 30 ° C. or higher and 25 ° C. or lower can be used.
  • the performance of the entire cycle is ensured within a good range without using a refrigerant having the same performance on the user side. can.
  • refrigerants Although some refrigerants have a boiling point of ⁇ 30 ° C. or higher and 25 ° C. or lower, they are excellent in terms of low GWP and low combustibility. Therefore, in the present disclosure, these refrigerants are appropriately used. You can also do it.
  • the GWP of the heat source side refrigerant is preferably 750 or less, more preferably 500 or less, further preferably 300 or less, and most preferably 150 or less.
  • the GWP of the user-side refrigerant is preferably 750 or less, more preferably 500 or less, further preferably 300 or less, and most preferably 150 or less.
  • the combustion rate of the heat source side refrigerant is preferably 10 cm / s or less, preferably 9 cm / s or less, in that a safer refrigerant can be used on the user side, which may cause human damage. It is more preferably present, more preferably 8 cm / s or less, and most preferably 7 cm / s or less.
  • the combustion speed of the refrigerant on the user side is preferably 5 cm / s or less, more preferably 3 cm / s or less, further preferably 2 cm / s or less, and 1.5 cm / s or less. Is the most preferable.
  • the saturation pressure of the refrigerant on the utilization side at 25 ° C. is preferably 0.0 MPaG or more, more preferably 0.01 MPaG or more, further preferably 0.03 MPaG or more, and more preferably 0.05 MPaG.
  • the saturation pressure of the refrigerant on the utilization side at 25 ° C. is preferably 5 MPaG or less, more preferably 4 MPaG or less, further preferably 3 MPaG or less, and most preferably 2 MPaG or less.
  • a refrigerant having a boiling point of -30 ° C or higher is used as the refrigerant on the user side so that the pressure does not exceed the pressure resistance limit of the piping. Can be maintained.
  • a refrigerant having a boiling point of ⁇ 30 ° C. or higher more preferably a refrigerant having a boiling point of ⁇ 25 ° C. or higher, and a refrigerant having a boiling point of ⁇ 20 ° C. or higher. More preferred.
  • the COP of the heat source side refrigerant is preferably 95% or more, more preferably 100% or more, as compared with R410A. , 101% or more, more preferably 102% or more.
  • the refrigerating capacity of the refrigerant on the heat source side is preferably 60% or more, more preferably 70% or more, as compared with R410A. , 80% or more, more preferably 90% or more, and most preferably 100% or more.
  • the heat source side refrigerant has a combustion speed of 10 cm / s or less.
  • the refrigerant on the user side is a refrigerant having a combustion speed of 3 cm / s or less.
  • the heat source side refrigerant is a refrigerant classified into the 2L class by the American Society for Heating, Refrigerating and Air Conditioning (ASHRAE), and the user side refrigerant is.
  • a combination of refrigerants classified into A1 class by ASHRAE can also be mentioned.
  • Examples of the heat source-side refrigerant include HFO-1123, HFO-1132, R32, and the like in the case of a refrigerant substantially composed of only a single compound.
  • Examples of the heat source side refrigerant include, in the case of a mixture of a plurality of compounds, at least two mixtures selected from the group consisting of HFO-1123, HFO-1132, R1234yf and R32, and R452B and R454B.
  • Specific examples of the heat source side refrigerant and the user side refrigerant include the combinations shown in the following table.
  • a mixture of HFO-1132 is, HFC32, HFO1234yf, HFO1234ze (E ), and at least one may include is selected from the group consisting of CO 2.
  • HFO-1132, HFO-1132 (E), HFO-1132 (z), and HFO-1132a are preferable, and HFO-1132 (E) is most preferable.
  • a mixture of HFO-1123 is, HFC32, HFO1234yf, HFO1234ze (E ), and at least one may include is selected from the group consisting of CO 2.
  • the heat source side refrigerant is R32, R452B or R454B
  • the user side refrigerant is a group consisting of R513A, R515A, R515B, R1224, R1234yf, R1234ze, R1233 and R1336.
  • Examples include combinations, which are at least one more selected. This combination is preferable in that the capacity of the refrigerant used on the heat source side is high.
  • the heat source side refrigerant is a refrigerant containing HFO-1132
  • the user side refrigerants are R513A, R515A, R515B, R471A, R1224, R1234yf, R1234ze, R1233 and R1336.
  • Examples include combinations, which are at least one selected from the group consisting of. This combination is preferable in that the GWP (CO 2 tons) of the entire system can be reduced.
  • HFO-1132 indicates any one of HFO-1132a, HFO-1132 (E) and HFO-1132 (Z).
  • R1224 indicates any one of HCFO-1224yd (E), HCFO-1224yd (Z), HCFO-1224zb (E), HCFO-1224zb (Z), HCFO-1224xe (E), and HCFO-1224xe (Z).
  • R1234 indicates any of HFO-1234yf, HFO-1234ze (E), and HFO-1234ze (Z).
  • R1233 indicates one of HCFO-1233zd (E), HCFO-1233zd (Z), and HCFO-1233xf.
  • R1336 indicates any one of HFO-1336mzz (E), HFO-1336mzz (Z), HFO-1336mcy, HFO-1336mcz (E), and HFO-1336mzz (Z).
  • HFOs and HCFOs are used as a refrigerant, the notation of HFO- and HCFO- may be omitted and described as R ⁇ such as R1234yf.
  • the refrigerating apparatus of the present disclosure is preferably an air conditioner, a refrigerator, a freezer, a water cooler, an ice machine, a refrigerating showcase, a refrigerating showcase, a refrigerating / refrigerating unit, a refrigerating / refrigerating warehouse refrigerator, an in-vehicle air conditioner, and a turbo refrigerator. Or it is a screw refrigerator.
  • the refrigerating apparatus of the present disclosure is more preferably a household air-conditioning device, a commercial air-conditioning device, an industrial air-conditioning device, or a multi-air-conditioning device for a building.
  • the refrigerating apparatus was operated by circulating the refrigerant on the user side and the refrigerant on the heat source side shown in Table 2 in the heat transfer cycle on the user side and the heat transfer cycle on the heat source side, respectively.
  • COP ratio and capacity ratio on the heat source side both are ratios to the value of R410A (%)
  • combustion speeds of the heat source side refrigerant and the user side refrigerant cm / s
  • the saturated vapor pressure (gauge) of the user side refrigerant at 25 ° C. Pressure) MPaG
  • a refrigerant having a boiling point of ⁇ 55 ° C. or higher and lower than ⁇ 30 ° C., which has a relatively high density and good performance is used as the heat source side refrigerant, so that the boiling point is increased as the user side refrigerant. It was found that even when a refrigerant having a temperature of ⁇ 30 ° C. or higher and 25 ° C. or lower was used, the refrigerating cycle efficiency was 100% or higher and the refrigerating capacity was 60% or higher, and the refrigerating cycle efficiency could be maintained within a preferable range.
  • the saturated vapor pressure can be set to atmospheric pressure or higher by using a refrigerant having a boiling point of 25 ° C or lower as the refrigerant on the user side. It was also found that the pressure can be maintained at a pressure that does not exceed the pressure resistance limit of the pipe by using a refrigerant having a boiling point of ⁇ 30 ° C. or higher as the refrigerant on the user side.
  • Refrigerator 10 User side heat transfer cycle 11: User side compressor 12: User side cascade heat exchanger 13: User side expansion valve 14: User side heat exchanger 15: User side liquid receiver 15a: Soluble plug 21: User side high pressure pressure sensor 22: User side low pressure pressure sensor 23: User side discharge temperature sensor 30: Heat source side heat transfer cycle 31: Heat source side compressor 32: Heat source side heat exchanger 33: Heat source side expansion valve 34: Heat source Side cascade heat exchanger 35: Cooling unit 40: Cascade heat exchanger 50: Control device

Landscapes

  • 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)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

La présente invention a pour objectif de fournir un dispositif de réfrigération à plusieurs étapes. À cet effet, le dispositif de réfrigération comprend : un cycle de transfert de chaleur côté utilisation qui a un compresseur côté utilisation, un échangeur de chaleur côté utilisation, un dispositif de décompression côté utilisation, et un échangeur de chaleur en cascade côté utilisation, et fait circuler un fluide frigorigène côté utilisation ; un cycle de transfert de chaleur côté source de chaleur qui comporte un compresseur côté source de chaleur, un échangeur de chaleur côté source de chaleur, un dispositif de décompression côté source de chaleur, et un échangeur de chaleur en cascade côté source de chaleur, et fait circuler un fluide frigorigène côté source de chaleur ; un échangeur de chaleur en cascade qui échange de la chaleur entre le fluide frigorigène côté utilisation du condenseur côté utilisation et le fluide frigorigène côté source de chaleur de l'évaporateur côté source de chaleur ; et un dispositif de commande. Le fluide frigorigène côté utilisation a un point d'ébullition dans la plage de -30 °C à +25 °C, inclus, et le fluide frigorigène côté source de chaleur a un point d'ébullition allant de -55 °C ou plus mais inférieur à -30 °C.
PCT/JP2021/025511 2020-07-06 2021-07-06 Dispositif de réfrigération WO2022009898A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP21838192.9A EP4177539A4 (fr) 2020-07-06 2021-07-06 Dispositif de réfrigération
CN202180048552.8A CN115885139A (zh) 2020-07-06 2021-07-06 制冷装置
US18/088,991 US20230135967A1 (en) 2020-07-06 2022-12-27 Refrigeration device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-116676 2020-07-06
JP2020116676 2020-07-06

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/088,991 Continuation US20230135967A1 (en) 2020-07-06 2022-12-27 Refrigeration device

Publications (1)

Publication Number Publication Date
WO2022009898A1 true WO2022009898A1 (fr) 2022-01-13

Family

ID=79553204

Family Applications (1)

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

Country Status (5)

Country Link
US (1) US20230135967A1 (fr)
EP (1) EP4177539A4 (fr)
JP (2) JP7216151B2 (fr)
CN (1) CN115885139A (fr)
WO (1) WO2022009898A1 (fr)

Cited By (1)

* 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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230375230A1 (en) * 2022-05-21 2023-11-23 Honeywell International Inc. Nonflammable refrigerants having low gwp, and systems for and methods of providing refrigeration

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05133649A (ja) * 1991-11-13 1993-05-28 Matsushita Refrig Co Ltd 冷暖房装置
WO2013018148A1 (fr) * 2011-08-04 2013-02-07 三菱電機株式会社 Dispositif de réfrigération
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
WO2015140873A1 (fr) * 2014-03-17 2015-09-24 三菱電機株式会社 Dispositif de réfrigération et procédé de commande de dispositif de réfrigération
WO2015140872A1 (fr) * 2014-03-17 2015-09-24 三菱電機株式会社 Dispositif de réfrigération
JP2015529788A (ja) * 2012-08-01 2015-10-08 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニーＥ．Ｉ．Ｄｕ Ｐｏｎｔ Ｄｅ Ｎｅｍｏｕｒｓ Ａｎｄ Ｃｏｍｐａｎｙ ヒートポンプにおけるｅ−１，１，１，４，４，４−ヘキサフルオロ−２−ブテンの使用
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
WO2019124402A1 (fr) * 2017-12-18 2019-06-27 ダイキン工業株式会社 Composition contenant un réfrigérant, application associée, machine frigorifique possédant ladite composition, et procédé de fonctionnement de ladite machine frigorifique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP3012557A4 (fr) * 2013-06-19 2017-02-22 Mitsubishi Electric Corporation Dispositif à cycle de réfrigération
US10539342B2 (en) * 2017-02-08 2020-01-21 The Delfield Company, Llc Small refrigerant receiver for use with thermostatic expansion valve refrigeration system
WO2018237175A1 (fr) * 2017-06-21 2018-12-27 Honeywell International Inc. Systèmes et procédés de réfrigération
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

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05133649A (ja) * 1991-11-13 1993-05-28 Matsushita Refrig Co Ltd 冷暖房装置
WO2013018148A1 (fr) * 2011-08-04 2013-02-07 三菱電機株式会社 Dispositif de réfrigération
JP2015529788A (ja) * 2012-08-01 2015-10-08 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニーＥ．Ｉ．Ｄｕ Ｐｏｎｔ Ｄｅ Ｎｅｍｏｕｒｓ Ａｎｄ Ｃｏｍｐａｎｙ ヒートポンプにおけるｅ−１，１，１，４，４，４−ヘキサフルオロ−２−ブテンの使用
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
WO2015140873A1 (fr) * 2014-03-17 2015-09-24 三菱電機株式会社 Dispositif de réfrigération et procédé de commande de dispositif de réfrigération
WO2015140872A1 (fr) * 2014-03-17 2015-09-24 三菱電機株式会社 Dispositif de réfrigération
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
WO2019124402A1 (fr) * 2017-12-18 2019-06-27 ダイキン工業株式会社 Composition contenant un réfrigérant, application associée, machine frigorifique possédant ladite composition, et procédé de fonctionnement de ladite machine frigorifique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4177539A4 *

Cited By (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
GB2615111B (en) * 2022-01-28 2024-07-03 Agilent Technologies Inc Cooling arrangements for analytical device

Also Published As

Publication number Publication date
JP2022125358A (ja) 2022-08-26
CN115885139A (zh) 2023-03-31
JP7216151B2 (ja) 2023-01-31
JP2022014455A (ja) 2022-01-19
EP4177539A4 (fr) 2024-10-16
US20230135967A1 (en) 2023-05-04
EP4177539A1 (fr) 2023-05-10

Similar Documents

Publication Publication Date Title
US10254016B2 (en) Refrigeration cycle apparatus and method for controlling refrigeration cycle apparatus
WO2012066763A1 (fr) Congélateur
WO2015071967A1 (fr) Système de réfrigération
US20230135967A1 (en) Refrigeration device
JP5908183B1 (ja) 空気調和装置
JP2013015264A (ja) 空気調和装置
KR102504975B1 (ko) 냉동 시스템 및 방법
TW200516222A (en) Refrigeration system using non-azeotropic refrigerants and non-azeotropic refrigerants for ultra low temperature to be used in said refrigeration system
CN110023684B (zh) 配管直径的确定方法、配管直径的确定装置以及制冷装置
WO2014199445A1 (fr) Dispositif frigorifique
JP5506638B2 (ja) 冷凍装置
WO2023047440A1 (fr) Climatiseur
JP6725639B2 (ja) 冷凍サイクル装置
CN115181547B (zh) 制冷剂及其制备方法和制冷系统
CN114207080A (zh) 非共沸混合制冷剂和使用非共沸混合制冷剂的制冷设备
CN114207363A (zh) 使用非共沸混合制冷剂的制冷系统
EP3642541A1 (fr) Systèmes et procédés de réfrigération
CN115584241A (zh) 一种混合制冷剂、制冷系统及冰箱
JP2021025700A (ja) 空気調和機
Maogang et al. Available energy analysis of new tandem double-capillary tube refrigeration system for refrigerator-freezers
Kreveld Maintaining your cool

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21838192

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2021838192

Country of ref document: EP

Effective date: 20230206