WO2021065943A1 - 熱処理システム - Google Patents

熱処理システム Download PDF

Info

Publication number
WO2021065943A1
WO2021065943A1 PCT/JP2020/036997 JP2020036997W WO2021065943A1 WO 2021065943 A1 WO2021065943 A1 WO 2021065943A1 JP 2020036997 W JP2020036997 W JP 2020036997W WO 2021065943 A1 WO2021065943 A1 WO 2021065943A1
Authority
WO
WIPO (PCT)
Prior art keywords
cycle
heat
refrigerant
medium
cascade
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.)
Ceased
Application number
PCT/JP2020/036997
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
山田　拓郎
吉見　敦史
熊倉　英二
岩田　育弘
猛 宮崎
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
Priority to CN202080068671.5A priority Critical patent/CN114502897A/zh
Priority to JP2021551334A priority patent/JPWO2021065943A1/ja
Priority to EP20871065.7A priority patent/EP4019860A4/en
Publication of WO2021065943A1 publication Critical patent/WO2021065943A1/ja
Priority to US17/707,324 priority patent/US20220221202A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
    • C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
    • C09K5/045—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/10—Liquid materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001—Compression cycle type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • 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
    • F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • 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
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression 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
    • 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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
    • 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
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/007—Compression machines, plants or systems with reversible cycle not otherwise provided for three pipes connecting the outdoor side to the indoor side with multiple indoor units
    • 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
    • F25B2400/00—Component parts or details not otherwise provided for in this subclass
    • 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
    • F25B2400/00—Component parts or details not otherwise provided for in this subclass
    • F25B2400/22—Refrigeration systems for supermarkets
    • 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
    • F25B25/02—Compression-sorption machines, plants, or systems

Definitions

  • Patent Document 1 Japanese Unexamined Patent Publication No. 11-173725 discloses a showcase refrigerating apparatus including an outdoor unit, a cascade unit, and a showcase refrigerating unit.
  • the heat treatment system includes one or more heat source side cycles and one or more load side cycles.
  • the heat source side cycle and the load side cycle share a cascade heat exchanger.
  • the total of the number of heat source side cycles and the number of load side cycles is 3 or more.
  • the first cycle circulates the first refrigerant or heat medium.
  • the second cycle circulates the second refrigerant or heat medium.
  • the third cycle circulates the third refrigerant or heat medium.
  • the first refrigerant or heat medium, the second refrigerant or heat medium, and the third refrigerant or heat medium are different from each other.
  • the heat treatment system according to the second aspect is the heat treatment system according to the first aspect, and at least one of the first to third cycles includes a cycle in which the refrigerant is circulated.
  • the cycle for circulating the refrigerant is a vapor compression type refrigerant cycle.
  • a vapor compression type refrigeration cycle refrigerant can be used as the refrigerant.
  • the heat treatment system according to the third aspect is the heat treatment system according to the first aspect or the second aspect, and at least one of the first to third cycles includes a cycle in which the heat medium is circulated.
  • the cycle in which the heat medium is circulated is a cycle in which sensible heat is used as it is in the liquid phase.
  • a heat medium in which sensible heat is used can be used as the heat medium.
  • the heat treatment system according to the fourth aspect is the heat treatment system of the first aspect or the second aspect, and at least one of the first to third cycles includes a cycle in which the heat medium is circulated.
  • the cycle in which the heat medium is circulated is a cycle in which sensible heat and latent heat are used.
  • a heat medium in which sensible heat and latent heat are used can be used as the heat medium.
  • the heat treatment system according to the fifth aspect is the heat treatment system from the first aspect to the fourth aspect, and the load side cycle includes at least one of a freezing cycle and a refrigerating cycle.
  • a high-pressure refrigerant is used in the freezing cycle and the refrigerating cycle.
  • a high-density refrigerant having a high density can be used in the freezing cycle and the refrigerating cycle in the low temperature region. Therefore, a suitable refrigerant can be used depending on the low temperature application of the load side unit.
  • high pressure refrigerant has a pressure exceeding 1.3 MPa at a condensation temperature of 25 ° C.
  • the heat treatment system according to the sixth aspect is the heat treatment system from the first aspect to the fifth aspect, and the load side cycle includes at least one of a heating cycle and a hot water supply cycle.
  • a medium-pressure refrigerant or a low-pressure refrigerant is used in the heating cycle and the hot water supply cycle.
  • a medium-pressure refrigerant or a low-pressure refrigerant having a high critical temperature can be used for the heating cycle and the hot water supply cycle. Therefore, an appropriate refrigerant can be used according to the high temperature application of the load side unit.
  • the above-mentioned “medium pressure refrigerant” has a pressure of more than 0.8 MPa and 1.3 MPa or less at a condensation temperature of 25 ° C.
  • the above-mentioned “low pressure refrigerant” has a pressure of more than 0.08 MPa and 0.8 MPa or less at a condensation temperature of 25 ° C.
  • the heat treatment system according to the seventh aspect is the heat treatment system from the first aspect to the sixth aspect, and the heat source side cycle is arranged outdoors.
  • the heat source side cycle placed outdoors uses a refrigerant having an RCL of less than 410A.
  • the restriction of the refrigerant used can be reduced by arranging the heat source side cycle using the refrigerant having a small RCL outdoors. Therefore, an appropriate refrigerant can be used for the heat source side cycle.
  • RCL refrigerant concentration limit
  • ISO 817 Refrigerants Designation and safety classification
  • RCL is the smallest value among ATEL (acute toxicity exposure limit), ODL (oxygen deficiency limit), and FCL (flammable concentration limit).
  • the heat treatment system according to the eighth aspect is the heat treatment system from the first aspect to the seventh aspect, and further includes a cascade unit having a cascade heat exchanger. At least part of the cascade unit is located outdoors.
  • the heat treatment system according to the ninth aspect is the heat treatment system from the first aspect to the eighth aspect, and the first and second cycles are heat source side cycles.
  • the first refrigerant or heat medium and the second refrigerant or heat medium are different from each other.
  • the heat exchange rate on the heat source side can be improved.
  • the heat treatment system according to the tenth aspect is the heat treatment system from the first aspect to the ninth aspect, and the load side cycle includes at least one of a cooling cycle, a freezing cycle, and a refrigerating cycle.
  • a medium pressure refrigerant or a low pressure refrigerant is used in the heat source side cycle.
  • a medium-pressure refrigerant or a low-pressure refrigerant having a high critical temperature can be used for the heat source side cycle.
  • the refrigerant in the heat source side cycle can exchange heat with at least one refrigerant or heat medium in the cooling cycle, the freezing cycle, and the refrigerating cycle.
  • the heat treatment system 1 includes one or more heat source side cycles and one or more load side cycles. There is. The total of the number of heat source side cycles and the number of load side cycles is 3 or more.
  • the heat source side cycle is a cycle for generating heat to be supplied to the load side cycle.
  • the load side cycle is a cycle in which the heat required according to the application is supplied from the heat source side cycle.
  • the heat treatment system 1 includes a first cycle C1, a second cycle C2, and a third cycle C3.
  • the first cycle C1 is a heat source side cycle
  • the second and third cycles C2 and C3 are load side cycles.
  • the heat source side cycle and the load side cycle share the first cascade heat exchanger 41 and the second cascade heat exchanger 42.
  • the first cycle C1 circulates the first refrigerant or heat medium.
  • the first cycle C1 is a cycle in which the first refrigerant is circulated.
  • the first cycle C1 is a vapor compression refrigeration cycle.
  • the first cycle C1 is a high-temperature refrigeration cycle on the high temperature side, and is used here for an outdoor unit of an air conditioner.
  • a high-pressure refrigerant is used, and here, for example, R32 is used.
  • the first compressor 11, the first condenser 12, the first expansion valve 13, the upstream first evaporator 14, and the downstream second evaporator 15 are sequentially used as refrigerants. It is connected by piping to form a refrigerant circuit.
  • the first compressor 11 sucks in the first refrigerant flowing through the first cycle C1 and compresses the sucked first refrigerant into a high-temperature and high-pressure gas refrigerant and discharges it.
  • the first compressor 11 is a type of compressor whose rotation speed can be controlled by an inverter circuit to adjust the discharge amount of the refrigerant.
  • the first condenser 12 exchanges heat between, for example, air, brine, or the like and the first refrigerant flowing in the first cycle to condense and liquefy the refrigerant.
  • the first condenser 12 exchanges heat between the outside air and the first refrigerant.
  • the first expansion valve 13 decompresses and expands the first refrigerant flowing in the first cycle, and is, for example, an electronic expansion valve.
  • the first evaporator 14 evaporates the first refrigerant flowing through the first cycle C1 by heat exchange.
  • the first evaporator 14 is composed of, for example, a heat transfer tube through which the first refrigerant flowing through the first cycle C1 passes in the first cascade heat exchanger 41. Then, in the first cascade heat exchanger 41, heat exchange is performed between the first refrigerant flowing through the first evaporator 14 and the second refrigerant flowing through the second cycle C2.
  • the first evaporator 15 evaporates the first refrigerant flowing through the first cycle by heat exchange.
  • the first evaporator 15 is composed of, for example, a heat transfer tube through which the first refrigerant flowing through the first cycle C1 passes in the second cascade heat exchanger 42. Then, in the second cascade heat exchanger 42, heat exchange is performed between the first refrigerant flowing through the first evaporator 14 and the third heat medium flowing through the third cycle C3.
  • the heat source side cycle which is the first cycle C1 is arranged outdoors.
  • a part of the first cycle may be arranged outdoors, but here, the entire first cycle C1 is arranged outdoors.
  • the heat source side cycle arranged outdoors can use a refrigerant having an RCL smaller than R410A.
  • a refrigerant having an RCL smaller than 410A is, for example, R32.
  • RCL is a concentration limit in the air considering the safety factor, and is an index aimed at reducing the risk of acute toxicity, suffocation, and flammability in a closed space where humans exist.
  • RCL is determined according to ISO817. Specifically, RCL is the smallest value among the acute toxicity exposure limit (ATEL: Acute-Toxicity Exposure Limit), the oxygen deficiency limit (ODL: Oxygen Deprivation Limit), and the flammable concentration limit (FCL: Flameable Concentration Limit). Is.
  • the second refrigerant or heat medium is circulated.
  • the second cycle C2 is a cycle in which the second refrigerant is circulated.
  • the second cycle C2 is a low-temperature refrigeration cycle on the low temperature side, and is used here for an indoor unit of an air conditioner.
  • the second refrigerant is different from the first refrigerant.
  • R1234ze is used as the second refrigerant.
  • the second expansion valve 21, the second evaporator 22, the second compressor 27, and the second condenser 23 are sequentially connected by a refrigerant pipe to form a refrigerant circuit. There is.
  • the second expansion valve 21 decompresses and expands the second refrigerant flowing through the second cycle C2, and is, for example, an electronic expansion valve.
  • the second evaporator 22 evaporates the second refrigerant flowing in the second cycle by heat exchange.
  • the second evaporator 22 exchanges heat between the indoor air and the second refrigerant.
  • the second compressor 27 sucks in the second refrigerant flowing through the second cycle C2, compresses the sucked second refrigerant into a high-temperature and high-pressure gas refrigerant, and discharges the second refrigerant.
  • the second condenser 23 condenses the second refrigerant flowing in the second cycle by heat exchange.
  • the second condenser 23 is composed of, for example, a heat transfer tube through which the second refrigerant flowing through the second cycle passes in the first cascade heat exchanger 41.
  • the third cycle C3 is a cycle in which the third heat medium is circulated.
  • the third cycle C3 is a low-temperature side low-temperature refrigeration cycle, and is used here for a showcase freezing unit or a showcase incorporating a refrigerating unit.
  • the third heat medium is different from the first refrigerant and the second refrigerant.
  • CO 2 is used as the third heat medium.
  • the third compressor 31, the third condenser 32, the third expansion valve 33, and the third evaporator 34 are sequentially connected by piping to form a heat medium circuit. There is.
  • the third compressor 31 sucks in the third heat medium flowing through the third cycle C3, compresses the sucked third heat medium, and discharges it as a high-temperature and high-pressure gas medium.
  • the third compressor 31 is a type of compressor whose rotation speed can be controlled by an inverter circuit to adjust the discharge amount of another medium.
  • the third condenser 32 condenses the third heat medium flowing through the third cycle by heat exchange.
  • the third condenser 32 is composed of, for example, a heat transfer tube through which a third heat medium flowing through the third cycle C3 passes in the second cascade heat exchanger 42.
  • the third expansion valve 33 decompresses and expands the third heat medium flowing through the third cycle C3, and is, for example, an electronic expansion valve.
  • the third evaporator 34 evaporates the third heat medium flowing through the third cycle by heat exchange.
  • the third evaporator 34 exchanges heat by freezing or refrigerating the inside of the showcase.
  • (1-2-4) Cascade Heat Exchanger The first cycle C1 and the second cycle C2 share the first cascade heat exchanger 41.
  • the first evaporator 14 and the second condenser 23 are integrally configured.
  • heat exchange is performed between the first refrigerant flowing through the first evaporator 14 and the second refrigerant flowing through the second condenser 23.
  • the first cycle C1 and the third cycle C3 share the second cascade heat exchanger 42.
  • the first evaporator 15 and the third condenser 32 are integrally configured.
  • heat exchange is performed between the first refrigerant flowing through the first evaporator 15 and the third heat medium flowing through the third condenser 32.
  • the first cascade heat exchanger 41 and the second cascade heat exchanger 42 are connected in series.
  • the first refrigerant discharged from the first compressor 11 flows into the first condenser 12, dissipates heat to the outside air in the first condenser 12, and condenses.
  • the first refrigerant absorbs heat from the second refrigerant in the first evaporator 14 of the first cascade heat exchanger 41 and evaporates, and further, the second cascade heat exchanger 42
  • the first evaporator 15 of the above absorbs heat from the third heat medium and evaporates. After that, the first refrigerant is sucked into the first compressor 11.
  • the first refrigerant circulates as described above and repeats a compression stroke, a condensation stroke, an expansion stroke, and an evaporation stroke.
  • the second refrigerant dissipates heat to the first refrigerant and condenses.
  • the second refrigerant absorbs heat from the room air in the second evaporator 22 and evaporates to cool the room air.
  • the second refrigerant is compressed by the second compressor 27 and then flows into the second condenser 23.
  • the second refrigerant circulates as described above, and the room is cooled by repeating the condensation stroke, expansion stroke, evaporation stroke, and compression stroke.
  • the third heat medium discharged from the third compressor 31 flows into the third condenser 32 of the second cascade heat exchanger 42, dissipates heat to the first refrigerant, and condenses. ..
  • the third heat medium absorbs heat from the showcase in the third evaporator 34 and evaporates, and the inside of the showcase is frozen or refrigerated. After that, the third heat medium is sucked into the third compressor 31.
  • the third heat medium circulates as described above to repeat the compression stroke, the condensation stroke, the expansion stroke, and the evaporation stroke, so that the showcase is frozen or refrigerated.
  • a medium pressure refrigerant or a low pressure refrigerant having a high critical temperature is used in the first cycle C1 as the heat source side cycle.
  • the refrigerant in this heat source side cycle exchanges heat with the second refrigerant in the second cycle C2 as the cooling cycle and the third heat medium in the third cycle C3 as the refrigerating cycle or the refrigerating cycle. ing.
  • the first refrigerant or heat medium that circulates in the first cycle C1 the second refrigerant or heat medium that circulates in the second cycle C2, and the second It is different from the third refrigerant or heat medium that circulates in cycle C3 of 3. Since 3 or more media are used in 3 or more cycles, an appropriate medium can be used depending on the application of the load side cycle.
  • the first and second cycles C1 and C2 use the first and second refrigerants suitable for an air conditioner
  • the third cycle C3 uses a third heat medium suitable for freezing or refrigerating. I am using it.
  • the first refrigerant circulates in the first cycle C1, the second refrigerant circulates in the second cycle C2, and the third cycle A third heat medium circulates through C3, but is not limited to this.
  • Refrigerants different from each other may circulate in the first to third cycles C1 to C3, or heat media different from each other may circulate.
  • the third refrigerant circulates in the third cycle C3.
  • a high-pressure refrigerant is used as the third refrigerant.
  • the high pressure refrigerant is, for example, CO 2 .
  • the load-side cycle includes at least one of a freezing cycle and a refrigerating cycle, and a high-pressure refrigerant is used in the freezing cycle and the refrigerating cycle. Since a high-pressure refrigerant having a high density in the low temperature region is used for the freezing cycle and the refrigerating cycle, a suitable refrigerant can be used depending on the low temperature application of the third cycle C3 which is the load side unit.
  • the first cycle C1 is a low-source refrigeration cycle on the cold side
  • the second and The third cycles C2 and C3 are high-temperature refrigeration cycles on the high temperature side.
  • the first cycle C1 is a heat source side cycle constituting the outdoor unit of the air conditioner.
  • the second cycle C2 is a heating cycle that constitutes the indoor unit of the air conditioner.
  • the third cycle C3 is a hot water supply cycle.
  • the first condensers 12 and 16 condense the first refrigerant flowing in the first cycle by heat exchange.
  • the upstream first condenser 12 is composed of, for example, a heat transfer tube through which the first refrigerant flowing through the first cycle passes in the first cascade heat exchanger 41.
  • the downstream first condenser 16 is composed of a heat transfer tube or the like through which the second refrigerant flowing through the second cycle passes in the second cascade heat exchanger 42.
  • the first evaporator 14 evaporates the refrigerant by exchanging heat between, for example, air, brine, etc. and the first refrigerant flowing in the first cycle.
  • the first evaporator 14 exchanges heat between the outside air and the first refrigerant.
  • the second evaporator 22, the second compressor 27, the second condenser 23, and the second expansion valve 21 are sequentially connected by a refrigerant pipe to form a refrigerant circuit.
  • a medium pressure refrigerant or a low pressure refrigerant is used.
  • the medium pressure refrigerant is, for example, R1234ze (E).
  • the low pressure refrigerant is, for example, R1234ze (Z).
  • the second evaporator 22 evaporates the second refrigerant flowing through the second cycle C2 by exchanging heat with the first refrigerant.
  • the first cascade heat exchanger 41 is composed of a heat transfer tube or the like through which a second refrigerant flowing through the second cycle C2 passes.
  • the second condenser 23 condenses the second refrigerant flowing through the second cycle C2 by exchanging heat with the air in the room.
  • the third cycle C3 is a hot water supply circuit that generates hot water from water.
  • the third cycle C3 is a cycle in which sensible heat is used as it is in the liquid phase.
  • the heat medium in which sensible heat is used is, for example, water, brine, or the like, and here, water is used as the third heat medium.
  • the circulation pump 35, the endothermic unit 36, and the hot water storage tank 37 are sequentially connected by piping to form a circuit.
  • water or hot water circulates so that the hot water heated by the endothermic unit 36 of the second cascade heat exchanger 42 is stored in the hot water storage tank 37.
  • a water supply pipe to the hot water storage tank 37 and a hot water discharge pipe from the hot water storage tank 37 are connected to the hot water supply circuit for water supply and drainage in the hot water storage tank 37.
  • the first refrigerant discharged from the first compressor 11 is the first condenser 12 on the upstream side of the first cascade heat exchanger 41.
  • the second refrigerant dissipates heat and condenses
  • the first condenser 16 on the downstream side of the second cascade heat exchanger 42 dissipates heat from the third heat medium and condenses.
  • the first refrigerant expands in the first expansion valve 13 and then endotherms from the outside air in the first evaporator 14 to evaporate.
  • the first refrigerant circulates as described above and repeats the compression stroke, the condensation stroke, the expansion stroke, and the evaporation stroke.
  • the second refrigerant absorbs heat into the first refrigerant and evaporates.
  • the second refrigerant dissipates heat from the room air in the second condenser 23 and condenses to warm the room air.
  • the second refrigerant expands in the second expansion valve 21 and then flows into the second evaporator 22.
  • the second refrigerant circulates as described above, and the room is heated by repeating the condensation stroke, the compression stroke, the evaporation stroke, and the expansion stroke.
  • the water in the hot water storage tank 37 is supplied to the endothermic portion 36 of the second cascade heat exchanger 42 by the circulation pump 35, and is heated by absorbing heat from the first refrigerant.
  • the hot water generated by heating returns to the hot water storage tank 37, and the circulation of hot water is continued in the third cycle C3 until the predetermined heat storage temperature is reached.
  • the heating cycle and the hot water supply cycle used for high temperature applications are applied to the load side cycle. Then, in the heating cycle of the second cycle C2, a medium-pressure refrigerant or a low-pressure refrigerant is used. Since the critical temperatures of the medium-pressure refrigerant and the low-pressure refrigerant are high, an appropriate medium is used in this embodiment according to the high-temperature application of the load-side cycle.
  • the load-side cycle includes at least one of a heating cycle and a hot water supply cycle, and a medium pressure refrigerant or a low pressure refrigerant may be used in the heating cycle and the hot water supply cycle.
  • the first cycle C1 is higher than the second cycle C2 on the high temperature side. It is a refrigeration cycle and a low source refrigeration cycle on the cold side with respect to the third cycle C3.
  • the first cycle C1 is a heat source side cycle constituting the outdoor unit of the air conditioner.
  • the second cycle C2 is a hot water supply cycle.
  • the third cycle C3 is a freezing or refrigerating cycle.
  • the first condenser 12 condenses the first refrigerant flowing through the first cycle C1 by heat exchange with the second heat medium in the first cascade heat exchanger 41.
  • the first condenser 12 is composed of, for example, a heat transfer tube through which the first refrigerant flowing through the first cycle C1 passes in the first cascade heat exchanger 41.
  • the additional expansion valve 17 decompresses and expands the first refrigerant condensed by the first condenser 12, and is, for example, an electronic expansion valve.
  • the first evaporator 18 evaporates the first refrigerant flowing through the first cycle C1 by heat exchange with the third heat medium in the second cascade heat exchanger 42.
  • the first evaporator 18 is composed of, for example, a heat transfer tube through which the first refrigerant flowing through the first cycle C1 passes in the second cascade heat exchanger 42.
  • the second cycle C2 is substantially the same as the third cycle C3 of the second embodiment. Specifically, in the second cycle C2, the circulation pump 35, the endothermic unit 36, and the hot water storage tank 37 are connected.
  • the endothermic unit 36 is composed of, for example, a heat transfer tube through which a second heat medium flowing through the second cycle C2 passes in the first cascade heat exchanger 41. Then, in the second cycle C2, water or hot water circulates so that the hot water heated by the endothermic unit 36 of the first cascade heat exchanger 41 is stored in the hot water storage tank 37.
  • the third cycle C3 is the same as the third cycle C3 of the first embodiment.
  • the first refrigerant discharged from the compressor 11 is the second refrigerant in the first condenser 12 of the first cascade heat exchanger 41. It dissipates heat from and condenses. After that, the first refrigerant expands in the additional expansion valve 17, and then absorbs heat from the third heat medium in the first condenser 16 of the second cascade heat exchanger 42 and evaporates. After that, the first refrigerant expands in the first expansion valve 13 and then endotherms from the outside air in the first evaporator 14 to evaporate. In the first cycle C1, the first refrigerant circulates as described above and repeats the compression stroke, the condensation stroke, the expansion stroke, the evaporation stroke, the expansion stroke, and the evaporation stroke.
  • the water in the hot water storage tank 37 is supplied to the endothermic section 36 of the first cascade heat exchanger 41 by the circulation pump 35, and is heated by absorbing heat from the first refrigerant.
  • the hot water generated by heating returns to the hot water storage tank 37, and the circulation of hot water is continued in the second cycle C2 until the predetermined heat storage temperature is reached.
  • the third heat medium discharged from the third compressor 31 flows into the third condenser 32 of the second cascade heat exchanger 42, dissipates heat to the first refrigerant, and condenses. ..
  • the third heat medium absorbs heat from the showcase in the third evaporator 34 and evaporates, and the inside of the showcase is frozen or refrigerated. After that, the third heat medium is sucked into the third compressor 31.
  • the third heat medium circulates as described above and repeats the compression stroke, the condensation stroke, the expansion stroke, and the evaporation stroke, so that the showcase is frozen or refrigerated.
  • a cycle used for high temperature applications and a cycle used for low temperature applications are applied to the load side cycle. Since the first refrigerant or heat medium, the second refrigerant or heat medium, and the third refrigerant or heat medium are different from each other, an appropriate medium may be used according to the application of each load-side cycle. it can.
  • the heat treatment system 4 of the present embodiment includes a plurality of heat source side cycles.
  • the first and second cycles C1 and C2 are heat source side cycles
  • the third cycle C3 is a load side cycle.
  • the first cycle C1 is a heat source side cycle constituting the outdoor unit of the air conditioner.
  • the second cycle C2 is a heat source side cycle using solar heat.
  • the third cycle C3 is a hot water supply cycle.
  • the refrigerant circuit is configured.
  • the first cycle C1 of the fourth embodiment is different in that the downstream first condenser 16 is omitted in the first cycle C1 of the second embodiment.
  • the first cycle C1 of the fourth embodiment is different in that the upstream first evaporator 18 is omitted in the first cycle C1 of the third embodiment.
  • the circulation pump 51, the solar heat panel 52, and the heat radiating unit 53 are connected.
  • the second heat medium heated by the solar heat panel 52 circulates so as to dissipate heat by the heat radiating portion 53 of the first cascade heat exchanger 41.
  • CO 2 is circulated as the second heat medium.
  • the circulation pump 35, the upstream endothermic unit 36, the downstream endothermic unit 38, and the hot water storage tank 37 are connected.
  • the hot water is stored in the hot water storage tank 37 by being heated by the upstream heat absorbing portion 36 of the second cascade heat exchanger 42 and further heated by the downstream heat absorbing portion 38 of the first cascade heat exchanger 41. As such, water or hot water circulates.
  • the first cycle C1 and the third cycle C2 share the first cascade heat exchanger 41.
  • the second cycle C2 and the third cycle C3 share a second cascade heat exchanger 42.
  • the first refrigerant discharged from the compressor 11 is the third heat in the first condenser 12 of the first cascade heat exchanger 41. It dissipates heat from the medium and condenses. After that, the first refrigerant expands in the first expansion valve 13 and then endotherms from the outside air in the first evaporator 14 to evaporate.
  • the first refrigerant circulates as described above and repeats the compression stroke, the condensation stroke, the expansion stroke, and the evaporation stroke.
  • the second heat medium heated by the solar heat panel 52 by the circulation pump 51 is supplied to the heat radiating portion 53 of the second cascade heat exchanger 42, and is endothermic by the third heat medium. , To be cooled.
  • the cooled second heat medium continues to circulate in the second cycle C2.
  • the water in the hot water storage tank 37 is supplied to the heat absorbing portion 36 of the second cascade heat exchanger 42 by the circulation pump 35, and is heated by absorbing heat from the second heat medium. After that, the heated water is supplied to the endothermic portion 38 of the first cascade heat exchanger 41, and is further heated by absorbing heat from the first heat medium.
  • the hot water generated by the two-step heating returns to the hot water storage tank 37, and the circulation of the hot water is continued in the third cycle C3 until the predetermined heat storage temperature is reached.
  • the first and second cycles C1 and C2 are heat source side cycles, and the first refrigerant or heat medium and the second refrigerant or heat medium are different from each other. Therefore, the heat exchange rate on the heat source side can be improved.
  • the second cycle C2 has been described by exemplifying a cycle in which CO 2 is circulated as a heat medium, but the present invention is not limited thereto.
  • the cycle for circulating the heat medium is a cycle that utilizes sensible heat and latent heat.
  • the heat medium in which sensible heat and latent heat are utilized is, for example, chlorofluorocarbon water (a mixed solution of chlorofluorocarbon and water).
  • the heat treatment system 5 of the fifth embodiment further includes a cascade unit 40 in the first embodiment described above. Therefore, the heat treatment system 5 of the present embodiment mainly includes a first cycle C1, a second cycle C2, a third cycle C3, and a cascade unit 40.
  • the cascade unit 40 includes a secondary cycle in which the secondary medium circulates the first cascade heat exchanger 41, the third cascade heat exchanger 43, and the second cascade heat exchanger 42 by the circulation pump 46.
  • the secondary medium circulating in this secondary cycle may be the same as or different from the first refrigerant or heat medium, the second refrigerant or heat medium, or the third refrigerant or heat medium. ..
  • the first cycle C1 has a first cascade heat exchanger 41.
  • the evaporator 14 in the first cycle C1 evaporates the first refrigerant by heat exchange with the secondary medium flowing through the first cascade heat exchanger 41.
  • the second cycle C2 has a second cascade heat exchanger 42.
  • the second condenser 23 in the second cycle C2 condenses the second refrigerant by heat exchange with the secondary medium flowing through the second cascade heat exchanger 42.
  • the third cycle C3 has a third cascade heat exchanger 43.
  • the condenser 32 in the third cycle C3 condenses the third refrigerant by heat exchange with the secondary medium flowing through the third cascade heat exchanger 43.
  • the first cascade heat exchanger 41 has a heat absorbing portion 41a and a heat radiating portion 41b.
  • the endothermic unit 41a is the first evaporator 14 of the first cycle C1.
  • the heat radiating unit 41b the secondary medium circulating in the secondary cycle of the cascade unit 40 radiates heat to the first refrigerant.
  • the first cycle C1 having the endothermic section 41a is the heat source side cycle
  • the secondary cycle having the heat dissipation section 41b is the load side cycle.
  • the second cascade heat exchanger 42 has a heat absorbing portion 42a and a heat radiating portion 42b.
  • the secondary medium circulating in the secondary cycle absorbs heat from the second refrigerant.
  • the heat radiating unit 42b is the second condenser 23 of the second cycle C2.
  • the secondary cycle having the endothermic section 42a is the heat source side cycle
  • the second cycle C2 having the heat dissipation section 42b is the load side cycle.
  • the third cascade heat exchanger 43 has a heat absorbing portion 43a and a heat radiating portion 43b.
  • the secondary medium circulating in the secondary cycle absorbs heat from the third heat medium.
  • the heat radiating unit 43b is the third condenser 32 of the third cycle C3.
  • the secondary cycle having the endothermic section 43a is the heat source side cycle
  • the third cycle C3 having the heat dissipation section 43b is the load side cycle.
  • At least a part of the cascade unit 40 is arranged outdoors.
  • at least the portion of the cascade unit 40 that constitutes the heat source side cycle is arranged outdoors.
  • all of the first cascade units 40 are arranged outdoors.
  • the first refrigerant discharged from the first compressor 11 flows into the first condenser 12 and dissipates heat to the outside air in the first condenser 12. And condense. After expanding in the first expansion valve 13, the first refrigerant absorbs heat from the secondary medium in the first evaporator 14 of the first cascade heat exchanger 41 and evaporates. After that, the first refrigerant is sucked into the first compressor 11.
  • the first refrigerant circulates as described above and repeats a compression stroke, a condensation stroke, an expansion stroke, and an evaporation stroke.
  • the secondary medium is radiated to the first refrigerant and cooled by the heat radiating portion 41b of the first cascade heat exchanger 41.
  • This secondary medium is heated by absorbing heat from the second refrigerant at the endothermic portion 43a of the third cascade heat exchanger 43. Further, the secondary medium is heated by absorbing heat from the third heat medium at the endothermic portion 42a of the second cascade heat exchanger 42. The heated secondary medium flows into the heat radiating portion 41b of the first cascade heat exchanger 41.
  • the secondary medium circulates as described above and repeats the cooling and heating processes.
  • the second refrigerant dissipates heat to the secondary medium and condenses.
  • the second refrigerant absorbs heat from the room air in the second evaporator 22 and evaporates to cool the room air.
  • the second refrigerant flows into the second condenser 23.
  • the second refrigerant circulates as described above, and the room is cooled by repeating the condensation process, the expansion process, and the evaporation process.
  • the third heat medium discharged from the third compressor 31 flows into the third condenser 32 of the third cascade heat exchanger 43, dissipates heat to the secondary medium, and condenses.
  • the third heat medium absorbs heat from the showcase in the third evaporator 34 and evaporates, and the inside of the showcase is frozen or refrigerated. After that, the third heat medium is sucked into the third compressor 31.
  • the third heat medium circulates as described above and repeats the compression stroke, the condensation stroke, the expansion stroke, and the evaporation stroke, so that the showcase is frozen or refrigerated.
  • the heat treatment system 5 of the present embodiment further includes a cascade unit 40 having first to third cascade heat exchangers 41 to 43. Therefore, heat can be efficiently transferred from the first cycle C1 as the heat source side cycle to the second and third cycles C2 and C3 as the load side cycle via the cascade unit 40.
  • the cascade unit 40 is arranged outdoors. Therefore, the restriction of the refrigerant used in the cascade unit 40 arranged outdoors can be reduced.
  • the entire cascade unit 40 is arranged outdoors, but the present invention is not limited to this.
  • the first cascade heat exchanger 41 is arranged outdoors, and the second cascade heat exchanger 42 and the third cascade heat exchanger 43 are arranged indoors.
  • a part of the pipe connecting the first cascade heat exchanger 41 and the second cascade heat exchanger 42, and a part of the pipe connecting the first cascade heat exchanger 41 and the third cascade heat exchanger 43 It is placed outdoors and the rest is placed indoors.
  • the pipe connecting the second cascade heat exchanger 42 and the third cascade heat exchanger 43 is arranged indoors. In this way, when a part of the cascade unit 40 is arranged indoors, a shutoff valve is provided between the outdoor and the indoor in the secondary cycle in which the secondary medium of the cascade unit 40 flows.
  • the cascade unit 40 includes, but is not limited to, a secondary cycle in which the first to third cascade heat exchangers are connected in series.
  • the cascade unit 40 includes a secondary cycle in which the second cascade heat exchanger 42 and the third cascade heat exchanger 43 are arranged in parallel.
  • the secondary cycle has a first secondary cycle S1 and a second secondary cycle S2.
  • first secondary cycle S1 a circuit in which the first cascade heat exchanger 41, the second cascade heat exchanger 42, and the circulation pump 46 are connected by piping is configured.
  • second secondary cycle S2 a circuit is configured in which the first cascade heat exchanger 41, the third cascade heat exchanger 43, and the circulation pump 46 are connected by piping.
  • the secondary medium cooled by radiating heat to the first refrigerant in the heat dissipation section 41b of the first cascade heat exchanger 41 branches and branches into the endothermic section 42a of the second cascade heat exchanger 42 and the third cascade heat exchanger. It flows into each of the heat absorbing portions 43a of 43.
  • the secondary medium that has been heated by absorbing heat from the second refrigerant in the heat absorbing section 42a and the secondary medium that has been heated by absorbing heat from the third heat medium in the heat absorbing section 43a merge to form the first cascade heat. It flows into the heat radiating portion 41b of the exchanger 41.
  • the total number of heat source side cycles and the number of load side cycles is 4 or more. is there.
  • the heat treatment system 6 includes two heat source side cycles and three load side cycles.
  • the first cycle C1 and the second cycle are heat source side cycles
  • the third cycle C3, the fourth cycle C4, and the fifth cycle C5 are load side cycles.
  • the first cycle C1 is a heat source side cycle constituting the outdoor unit of the air conditioner.
  • the first cycle C1 includes the first compressor 11, the first condenser 12 (or the first evaporator 14), the first expansion valve 13, and the first evaporator 14 (or the first evaporator 12). , A first accumulator 19 and a four-way switching valve 20.
  • the first cycle C1 circulates, for example, R32.
  • the second cycle C2 is a heat source side cycle using solar heat.
  • the second cycle C2 includes a circulation pump 51, a solar heat panel 52, and an endothermic unit 54.
  • the second cycle C2 circulates, for example, CO 2.
  • the third cycle C3 is a cooling or heating cycle that constitutes the indoor unit of the air conditioner.
  • the third cycle C3 circulates, for example, R1234yf, R404A, R407H, or R468A.
  • the fourth cycle C4 is a freezing cycle and a refrigerating cycle.
  • the fourth cycle C4 includes a third compressor 31, a third condenser 32, a third expansion valve 33, and a third evaporator 34.
  • the fourth cycle C4 circulates, for example, CO 2.
  • the fifth cycle C5 is a hot water supply cycle.
  • the fifth cycle C5 includes a circulation pump 35, an endothermic unit 36, and a hot water storage tank 37.
  • the fifth cycle C5 circulates water, for example.
  • the heat treatment system 6 of the present embodiment is provided with a plurality of secondary cycles 70, 80, 90 that directly or indirectly exchange heat with a plurality of cycles C1 to C5 of the first to fifth cycles. ing.
  • the first secondary cycle 70 exchanges heat with the first cycle C1, the second cycle C2, and the fourth cycle C4.
  • the first secondary cycle 70 and the first cycle C1 share the first cascade heat exchanger 41.
  • the first secondary cycle 70 and the second cycle C2 share a second cascade heat exchanger 42.
  • the first secondary cycle 70 and the fourth cycle C4 share a third cascade heat exchanger 43.
  • the first pipe 71 connects the connecting portion L1 and the third cascade heat exchanger 43.
  • the second pipe 72 connects the third cascade heat exchanger 43 and the connecting portion L2.
  • the third pipe 73 connects the third cascade heat exchanger 43 and the connecting portion L3.
  • the third refrigerant flowing through the third cycle C3 branches and flows at the connecting portion L1 and rejoins at the connecting portion L3. Therefore, the secondary medium that circulates in the first secondary cycle 70 is the same as the refrigerant that circulates in the third cycle C3.
  • the second secondary cycle 80 exchanges heat with the first cycle C1, the second cycle C2, and the third secondary cycle 90 described later.
  • the second secondary cycle 80 and the first cycle C1 share the first cascade heat exchanger 41.
  • the second secondary cycle 80 and the second cycle C2 share a second cascade heat exchanger 42.
  • the second secondary cycle 80 and the third secondary cycle share a fourth cascade heat exchanger 44.
  • the second secondary cycle 80 indirectly exchanges heat with the fifth cycle C5.
  • the first pipe 81 connects the connecting portion L1 and the fourth cascade heat exchanger 44.
  • the second pipe 82 connects the fourth cascade heat exchanger 44 and the connecting portion L2.
  • the third pipe 83 connects the fourth cascade heat exchanger 44 and the connecting portion L3.
  • the third refrigerant flowing through the third cycle C3 branches and flows at the connecting portion L3, and rejoins at the connecting portion L1. Therefore, the secondary medium that circulates in the second secondary cycle 80 is the same as the refrigerant that circulates in the third cycle C3.
  • the third secondary cycle 90 exchanges heat with the fifth cycle C5 and the second secondary cycle 80.
  • the third secondary cycle 90 and the second secondary cycle 80 share a fourth cascade heat exchanger 44.
  • the third secondary cycle 90 and the fifth cycle C5 share a fifth cascade heat exchanger 45.
  • the third secondary cycle 90 mainly includes a compressor 91, a fifth cascade heat exchanger 45, an expansion valve 93, and a fourth cascade heat exchanger 44.
  • the secondary medium that circulates in the third secondary cycle 90 is different from the refrigerants that circulate in the first to fifth cycles C1 to C5 and the first and second secondary cycles 70 and 80.
  • the secondary medium that circulates in the third secondary cycle 90 is, for example, R1234ze.
  • the cascade unit 40 of the present embodiment includes a first cascade heat exchanger 41, a second cascade heat exchanger 42, an accumulator 26, a second compressor 27, and four-way switching valves 28 and 29.
  • the cascade unit 40 is arranged outdoors.
  • the first refrigerant discharged from the first compressor 11 flows into the first condenser 12, dissipates heat to the outside air in the first condenser 12, and condenses.
  • the first refrigerant absorbs heat from the first secondary medium (third refrigerant) in the first evaporator 14 of the first cascade heat exchanger 41 and evaporates.
  • the first refrigerant is sucked into the first compressor 11 through the four-way switching valve 20 and the accumulator 19.
  • the first refrigerant circulates as described above and repeats a compression stroke, a condensation stroke, an expansion stroke, and an evaporation stroke.
  • the first secondary medium (third refrigerant) dissipates heat to the first refrigerant and condenses.
  • the third refrigerant flows through the connecting portion L1 in each of the third cycle C3 and the first secondary cycle 70.
  • the second heat medium heated by the solar heat panel 52 by the circulation pump 51 is supplied to the endothermic portion 54 of the second cascade heat exchanger 42, and the first secondary medium (third refrigerant). ) Is endothermic.
  • the second heat medium continues to circulate in the second cycle C2.
  • the third refrigerant flows from the connecting portion L1 toward the second expansion valve 21, expands in the second expansion valve 21, and then endothermics from the room air in the second evaporator 22 and evaporates. And cool the room air.
  • the third refrigerant is expanded by the cooling expansion valve 24, passes through the connecting portion L2, passes through the accumulator 26, and is sucked into the second compressor 27.
  • the third refrigerant discharged from the second compressor 27 flows into the second cascade heat exchanger 42 by the four-way switching valve 28.
  • the third refrigerant dissipates heat to the second heat medium of the second cycle C2 and condenses.
  • the third refrigerant flows into the second condenser 23 of the first cascade heat exchanger 41.
  • the third refrigerant circulates as described above, and the room is cooled by repeating the condensation process, the expansion process, and the evaporation process.
  • the third refrigerant (first secondary medium) expands at the expansion valve 74 from the connecting portion L1 through the first pipe 71, and then the third cascade heat exchanger 43. Inflow to.
  • the first secondary medium absorbs heat from the fourth heat medium and evaporates. After that, the first secondary medium is expanded by the expansion valve 75, passes through the second pipe 72, and joins the third refrigerant circulating in the third cycle C3 at the connecting portion L2.
  • the third heat medium discharged from the third compressor 31 flows into the third condenser 32 of the third cascade heat exchanger 43 and dissipates heat to the first secondary medium. Condensate. After expanding in the third expansion valve 33, the fourth heat medium absorbs heat from the showcase in the third evaporator 34 and evaporates, and the inside of the showcase is frozen or refrigerated. After that, the fourth heat medium is sucked into the third compressor 31.
  • the third heat medium circulates as described above and repeats the compression stroke, the condensation stroke, the expansion stroke, and the evaporation stroke, so that the showcase is frozen or refrigerated.
  • the first refrigerant discharged from the first compressor 11 flows into the first condenser 12 via the four-way switching valve 20.
  • the first refrigerant dissipates heat from the third refrigerant and condenses.
  • the first refrigerant expands in the first expansion valve 13 and then flows into the first evaporator 14.
  • the first refrigerant absorbs heat from the outside air in the first evaporator 14 and evaporates.
  • the first refrigerant circulates as described above and repeats the compression stroke, the condensation stroke, the expansion stroke, and the evaporation stroke.
  • the first secondary medium (third refrigerant) absorbs heat from the first refrigerant and evaporates. Then, the first secondary medium passes through the four-way switching valve 28 and the accumulator 26 in sequence, and is compressed by the second compressor 27. The compressed first secondary medium flows through the four-way switching valve 29 at the connecting portion L3 to each of the third cycle C3 and the second secondary cycle 80.
  • the third refrigerant flows into the second condenser 23 from the connecting portion L3, dissipates heat from the indoor air in the second condenser 23 and condenses, and warms the indoor air. After that, the third refrigerant expands in the second expansion valve 21 and then flows into the second evaporator 22 via the connecting portion L1.
  • the second refrigerant circulates as described above, and the room is heated by repeating the condensation stroke, the evaporation stroke, and the expansion stroke.
  • the second secondary medium (third refrigerant) flows into the fourth cascade heat exchanger 44 from the connecting portion L3 through the third pipe 83.
  • the second secondary medium dissipates heat from the third secondary medium circulating in the third secondary cycle 90 and condenses.
  • the third secondary medium expands in the expansion valve 84 and then flows into the second evaporator 22 through the first pipe 81 and the connecting portion L1.
  • the third secondary medium discharged from the compressor 91 dissipates heat in the heat radiating section 92 of the fifth cascade heat exchanger 45 and condenses.
  • the third secondary medium absorbs heat from the third secondary medium (third refrigerant) at the heat radiating portion of the fourth cascade heat exchanger 44 and evaporates. This third secondary medium is sucked into the compressor 91.
  • the water in the hot water storage tank 37 is supplied to the endothermic portion 36 of the fifth cascade heat exchanger 45 by the circulation pump 35, and is heated by absorbing heat from the third secondary medium.
  • the hot water generated by heating returns to the hot water storage tank 37, and the circulation of hot water is continued in the fifth cycle C5 until the predetermined heat storage temperature is reached.
  • the total number of heat source side cycles and the number of load side cycles is 4 or more. As described above, by using 4 or more media in 4 or more cycles, an appropriate medium can be used depending on the application of the load side cycle.
  • the present disclosure is not particularly limited as long as 3 or more different media are used in 3 or more cycles. Therefore, 3 or more different media may be used in 4 or more cycles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
PCT/JP2020/036997 2019-09-30 2020-09-29 熱処理システム Ceased WO2021065943A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN202080068671.5A CN114502897A (zh) 2019-09-30 2020-09-29 热处理系统
JP2021551334A JPWO2021065943A1 (https=) 2019-09-30 2020-09-29
EP20871065.7A EP4019860A4 (en) 2019-09-30 2020-09-29 HEAT TREATMENT SYSTEM
US17/707,324 US20220221202A1 (en) 2019-09-30 2022-03-29 Heat treatment system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019180815 2019-09-30
JP2019-180815 2019-09-30

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/707,324 Continuation US20220221202A1 (en) 2019-09-30 2022-03-29 Heat treatment system

Publications (1)

Publication Number Publication Date
WO2021065943A1 true WO2021065943A1 (ja) 2021-04-08

Family

ID=75336941

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/JP2020/036997 Ceased WO2021065943A1 (ja) 2019-09-30 2020-09-29 熱処理システム
PCT/JP2020/036998 Ceased WO2021065944A1 (ja) 2019-09-30 2020-09-29 空気調和装置

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/036998 Ceased WO2021065944A1 (ja) 2019-09-30 2020-09-29 空気調和装置

Country Status (5)

Country Link
US (2) US20220220353A1 (https=)
EP (2) EP4019860A4 (https=)
JP (2) JPWO2021065944A1 (https=)
CN (2) CN114502898A (https=)
WO (2) WO2021065943A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2022224382A1 (https=) * 2021-04-21 2022-10-27

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114026373B (zh) * 2019-07-03 2023-01-10 三菱电机株式会社 制冷环路装置
JP7565716B2 (ja) * 2020-06-26 2024-10-11 キヤノン株式会社 冷却装置、半導体製造装置および半導体製造方法
CN116221866B (zh) * 2023-01-29 2026-01-02 清华大学 适用于建筑内、外区的分级处理空调系统及其控制方法
CN116424125B (zh) * 2023-04-23 2025-12-30 武汉蔚来能源有限公司 充换电站热管理系统及充换电站

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11173725A (ja) 1997-12-12 1999-07-02 Daikin Ind Ltd ショーケース用冷凍装置
JP2004233010A (ja) * 2003-01-31 2004-08-19 Daikin Ind Ltd ヒートポンプ式給湯機
JP2011038748A (ja) * 2009-08-18 2011-02-24 Iwaya Reitoki Seisakusho:Kk 冷凍機および暖房機
WO2012066763A1 (ja) * 2010-11-15 2012-05-24 三菱電機株式会社 冷凍装置
WO2013111179A1 (ja) * 2012-01-24 2013-08-01 三菱電機株式会社 空気調和装置

Family Cites Families (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5335508A (en) * 1991-08-19 1994-08-09 Tippmann Edward J Refrigeration system
MY114473A (en) * 1997-04-08 2002-10-31 Daikin Ind Ltd Refrigerating system
JPH11201569A (ja) * 1998-01-19 1999-07-30 Daikin Ind Ltd 冷凍装置
JP3063742B2 (ja) * 1998-01-30 2000-07-12 ダイキン工業株式会社 冷凍装置
JP4221780B2 (ja) * 1998-07-24 2009-02-12 ダイキン工業株式会社 冷凍装置
JP2000234813A (ja) * 1999-02-15 2000-08-29 Mitsubishi Electric Corp 冷凍装置
JP4072887B2 (ja) * 2002-01-18 2008-04-09 財団法人生産技術研究奨励会 室内温熱環境設計システム及びその方法
JP4130121B2 (ja) * 2002-11-20 2008-08-06 八洋エンジニアリング株式会社 アンモニアと二酸化炭素を組み合わせた二元冷凍システム
US7526924B2 (en) * 2003-11-28 2009-05-05 Mitsubishi Denki Kabushiki Kaisha Refrigerator and air conditioner
JP4258425B2 (ja) * 2004-04-26 2009-04-30 三菱電機株式会社 冷凍・空調装置
KR100565257B1 (ko) * 2004-10-05 2006-03-30 엘지전자 주식회사 압축기를 이용한 이차냉매사이클 및 이를 구비한 공기조화기
JP2007071519A (ja) * 2005-09-09 2007-03-22 Sanden Corp 冷却システム
AR078902A1 (es) * 2009-11-03 2011-12-14 Du Pont Sistema de refrigeracion en cascada con refrigerante de fluoroolefina
WO2011080804A1 (ja) * 2009-12-28 2011-07-07 ダイキン工業株式会社 熱源ユニット消費電力按分システム
FR2959998B1 (fr) * 2010-05-11 2012-06-01 Arkema France Fluides de transfert de chaleur ternaires comprenant du difluoromethane, du pentafluoroethane et du tetrafluoropropene
JP2011242059A (ja) * 2010-05-18 2011-12-01 Keisei Jidosha Kogyo Kk 温度制御システム、及び温度制御方法
JP5764734B2 (ja) * 2010-11-30 2015-08-19 パナソニックＩｐマネジメント株式会社 冷凍装置
JP2013002737A (ja) * 2011-06-16 2013-01-07 Mitsubishi Electric Corp 冷凍サイクル装置
JP5717584B2 (ja) * 2011-08-10 2015-05-13 三菱電機株式会社 冷凍サイクル装置
JP2013108720A (ja) * 2011-11-24 2013-06-06 Panasonic Corp 冷凍サイクル装置およびそれを備えた温水生成装置
JP6004367B2 (ja) * 2012-01-24 2016-10-05 パナソニックＩｐマネジメント株式会社 車両用空調装置
JP5641004B2 (ja) * 2012-03-16 2014-12-17 三菱電機株式会社 冷凍サイクル装置
WO2014097438A1 (ja) * 2012-12-20 2014-06-26 三菱電機株式会社 空気調和装置
WO2014147788A1 (ja) * 2013-03-21 2014-09-25 三菱電機株式会社 熱交換器、冷凍サイクル装置、及び熱交換器の製造方法
WO2015022958A1 (ja) * 2013-08-14 2015-02-19 セントラル硝子株式会社 熱伝達方法及び高温ヒートポンプ装置
EP3070417A4 (en) * 2013-11-12 2017-09-27 Mitsubishi Electric Corporation Refrigeration system
US10294400B2 (en) 2013-12-06 2019-05-21 Daikin Industries, Ltd. Composition including difluoromethane (HFC-32), pentafluoroethane (HFC-125), and 1,1,1,2-tetrafluoroethane (HFC-134A)
JP6161787B2 (ja) * 2014-03-07 2017-07-12 三菱電機株式会社 冷凍サイクル装置
CN104266314A (zh) * 2014-10-16 2015-01-07 中国扬子集团滁州扬子空调器有限公司 一种复合式制冷多联空调系统的控制方法
JP6369572B2 (ja) * 2015-01-16 2018-08-08 株式会社デンソー 熱サイクル用作動媒体
JP2017053566A (ja) * 2015-09-10 2017-03-16 ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド 冷凍サイクル装置
WO2017051472A1 (ja) * 2015-09-25 2017-03-30 三菱電機株式会社 冷却装置
JP2017133813A (ja) * 2016-01-29 2017-08-03 ダイキン工業株式会社 冷凍装置
JP6736910B2 (ja) * 2016-02-25 2020-08-05 ダイキン工業株式会社 冷凍装置
JP2019513966A (ja) * 2016-03-25 2019-05-30 ハネウェル・インターナショナル・インコーポレーテッドＨｏｎｅｙｗｅｌｌ Ｉｎｔｅｒｎａｔｉｏｎａｌ Ｉｎｃ． 低ｇｗｐカスケード冷却システム
WO2017221382A1 (ja) * 2016-06-23 2017-12-28 三菱電機株式会社 二元冷凍装置
CN208832798U (zh) * 2017-03-15 2019-05-07 三菱电机株式会社 热泵装置
US10345038B2 (en) * 2017-04-25 2019-07-09 Emerson Climate Technologies Retail Solutions, Inc. Dynamic coefficient of performance calculation for refrigeration systems
JP2020525745A (ja) * 2017-06-21 2020-08-27 ハネウェル・インターナショナル・インコーポレーテッドＨｏｎｅｙｗｅｌｌ Ｉｎｔｅｒｎａｔｉｏｎａｌ Ｉｎｃ． 冷凍システム及び方法
WO2020004108A1 (ja) * 2018-06-25 2020-01-02 ダイキン工業株式会社 空気調和システム
JP7370712B2 (ja) * 2019-03-04 2023-10-30 三菱重工サーマルシステムズ株式会社 室外機及び空気調和装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11173725A (ja) 1997-12-12 1999-07-02 Daikin Ind Ltd ショーケース用冷凍装置
JP2004233010A (ja) * 2003-01-31 2004-08-19 Daikin Ind Ltd ヒートポンプ式給湯機
JP2011038748A (ja) * 2009-08-18 2011-02-24 Iwaya Reitoki Seisakusho:Kk 冷凍機および暖房機
WO2012066763A1 (ja) * 2010-11-15 2012-05-24 三菱電機株式会社 冷凍装置
WO2013111179A1 (ja) * 2012-01-24 2013-08-01 三菱電機株式会社 空気調和装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4019860A4

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2022224382A1 (https=) * 2021-04-21 2022-10-27
JP7471515B2 (ja) 2021-04-21 2024-04-19 三菱電機株式会社 二元冷凍サイクル装置

Also Published As

Publication number Publication date
EP4019861A4 (en) 2022-09-28
EP4019860A4 (en) 2022-10-05
WO2021065944A1 (ja) 2021-04-08
US20220220353A1 (en) 2022-07-14
JPWO2021065944A1 (https=) 2021-04-08
EP4019861A1 (en) 2022-06-29
JPWO2021065943A1 (https=) 2021-04-08
EP4019860A1 (en) 2022-06-29
CN114502898A (zh) 2022-05-13
US20220221202A1 (en) 2022-07-14
CN114502897A (zh) 2022-05-13

Similar Documents

Publication Publication Date Title
WO2021065943A1 (ja) 熱処理システム
US20250003640A1 (en) Refrigeration systems and methods
JP6042026B2 (ja) 冷凍サイクル装置
RU2012122709A (ru) Каскадная холодильная система с фторолефиновым хладагентом
WO2012066763A1 (ja) 冷凍装置
JPWO2015071967A1 (ja) 冷凍装置
US20190137147A1 (en) Refrigeration systems and methods
JP4608303B2 (ja) 蒸気圧縮式ヒートポンプ
JP3226247U (ja) 冷凍装置
CN206055994U (zh) 制冷循环装置
JP5506638B2 (ja) 冷凍装置
EP3642541B1 (en) Cascaded refrigeration system
JP2006003023A (ja) 冷凍装置
KR101658021B1 (ko) 이원냉동사이클을 이용한 히트펌프 시스템
US20240011690A1 (en) Refrigeration system with heat pump compression
KR101402160B1 (ko) 고온수 연속 축열이 가능한 히트펌프 축열 장치
WO2022003754A1 (ja) 冷凍サイクル装置
JP7208577B2 (ja) 冷凍サイクル装置
JP5800842B2 (ja) 冷凍装置
WO2016189810A1 (ja) ヒートポンプ装置
JP3918980B2 (ja) 冷凍装置
JP2004226018A (ja) 冷凍装置
JP6695034B2 (ja) ヒートポンプ装置
JP7660709B2 (ja) 空気調和装置
KR102852438B1 (ko) 성에가 발생되지 않는 히트펌프 냉동싸이클

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: 20871065

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2021551334

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2020871065

Country of ref document: EP

Effective date: 20220324

WWW Wipo information: withdrawn in national office

Ref document number: 2020871065

Country of ref document: EP