WO2019230117A1 - Appareil de climatisation de véhicule - Google Patents

Appareil de climatisation de véhicule Download PDF

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Publication number
WO2019230117A1
WO2019230117A1 PCT/JP2019/009928 JP2019009928W WO2019230117A1 WO 2019230117 A1 WO2019230117 A1 WO 2019230117A1 JP 2019009928 W JP2019009928 W JP 2019009928W WO 2019230117 A1 WO2019230117 A1 WO 2019230117A1
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WO
WIPO (PCT)
Prior art keywords
heat medium
heat
refrigerant
circuit
radiator
Prior art date
Application number
PCT/JP2019/009928
Other languages
English (en)
Japanese (ja)
Inventor
徹也 石関
Original Assignee
サンデン・オートモーティブクライメイトシステム株式会社
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 サンデン・オートモーティブクライメイトシステム株式会社 filed Critical サンデン・オートモーティブクライメイトシステム株式会社
Priority to DE112019002760.3T priority Critical patent/DE112019002760T5/de
Priority to CN201980019939.3A priority patent/CN111867862A/zh
Publication of WO2019230117A1 publication Critical patent/WO2019230117A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00321—Heat exchangers for air-conditioning devices
    • B60H1/00342—Heat exchangers for air-conditioning devices of the liquid-liquid type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00899—Controlling the flow of liquid in a heat pump system
    • B60H1/00921—Controlling the flow of liquid in a heat pump system where the flow direction of the refrigerant does not change and there is an extra subcondenser, e.g. in an air duct
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/323—Cooling devices using compression characterised by comprising auxiliary or multiple systems, e.g. plurality of evaporators, or by involving auxiliary cooling devices
    • 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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/00307—Component temperature regulation using a liquid flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H2001/00928—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices comprising a secondary circuit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H2001/00949—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices comprising additional heating/cooling sources, e.g. second evaporator
    • 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
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0409—Refrigeration circuit bypassing means for the evaporator
    • 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
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0411—Refrigeration circuit bypassing means for the expansion valve or capillary tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2501—Bypass valves

Definitions

  • the present invention relates to a vehicle air conditioner that can be applied to a vehicle including a plurality of devices that release heat when used, such as a traveling electric motor and a battery that stores electric power supplied to the traveling electric motor. Is.
  • this type of vehicle air conditioner includes a refrigerant circuit having a compressor, an indoor heat exchanger, an outdoor heat exchanger, and an expansion valve, and supplies air that has exchanged heat with the refrigerant in the indoor heat exchanger into the vehicle interior. By doing so, the vehicle interior is cooled, heated, dehumidified, and the like.
  • an electric motor as a drive source, a battery that stores electric power supplied to the electric motor, etc.
  • an electric motor as a drive source, a battery that stores electric power supplied to the electric motor, etc.
  • a plurality of devices that release heat are connected to a cooling water circuit, and each device is cooled by cooling water that flows through the cooling water circuit, and cooling that absorbs heat by cooling the devices.
  • water is radiated by exchanging heat with a refrigerant flowing through a refrigerant circuit (see, for example, Patent Document 1).
  • a plurality of devices to be cooled have different target cooling temperatures.
  • a plurality of devices having different target cooling temperatures are connected to one cooling water circuit, there is a possibility that the control for setting each of the plurality of devices to be cooled to the target cooling temperature may be complicated. is there.
  • An object of the present invention is to provide a vehicle air conditioner that can easily achieve a target cooling temperature when the target cooling temperatures of a plurality of devices to be cooled are different from each other. is there.
  • the vehicle air conditioner of the present invention includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and an expansion valve, and air and refrigerant supplied into the vehicle interior in the indoor heat exchanger.
  • a refrigerant circuit that adjusts the temperature or humidity of the air in the passenger compartment by exchanging heat with the first heat medium circuit, a first heat medium circuit in which a first heat medium that absorbs heat released from the first heat radiator flows, and a second The second heat medium circuit through which the second heat medium that absorbs the heat released from the radiator circulates and the refrigerant that circulates through the refrigerant circuit and the first heat medium that circulates through the first heat medium circuit exchange heat.
  • a first heat medium radiator that releases heat from one heat medium to the refrigerant, and a refrigerant that flows through the refrigerant circuit and is connected to the downstream side in the refrigerant distribution direction of the first heat medium radiator in the refrigerant circuit. Heat is exchanged with the circulating second heat medium to transfer heat from the second heat medium to the refrigerant. And a, and the second heat medium radiator to out.
  • the refrigerant flowing through the refrigerant circuit exchanges heat with the first heat medium in the first heat medium radiator before exchanging heat with the second heat medium in the second heat medium radiator.
  • the first heat medium can be cooled to a temperature lower than that of the second heat medium. Therefore, the temperature of the first radiator that is cooled by the first heat medium can be reduced by the second heat medium. It becomes possible to cool to a temperature lower than the temperature of the second heat radiator to be cooled, and by connecting a plurality of heat radiators to the first heat medium circuit or the second heat medium circuit respectively according to the target cooling temperature Thus, it is possible to easily set the first radiator and the second radiator to a target cooling temperature without performing complicated control.
  • FIG. 1 is a schematic configuration diagram of a vehicle air conditioner showing an embodiment of the present invention. It is a schematic block diagram of the vehicle air conditioner which shows a battery cooling operation and a 1st motor cooling operation. It is a schematic block diagram of the vehicle air conditioner which shows a 2nd motor cooling driving
  • 1 to 4 show an embodiment of the present invention.
  • the vehicle air conditioner 1 of the present invention is applied to a vehicle that can be driven by the driving force of an electric motor, such as an electric vehicle or a hybrid vehicle.
  • the vehicle has an electric motor M as a second heat radiator for traveling, and a battery B as a first heat radiator for traveling in which electric power supplied to the electric motor M is stored.
  • the electric motor M and the battery B have different usable temperature zones. Further, the electric motor M and the battery B each release heat by use. For this reason, the electric motor M and the battery B need to be individually cooled or heated.
  • the electric motor M is desirably used in a range of 30 ° C. to 50 ° C., for example, and the battery B is desirably used in a range lower than the usable temperature range of the electric motor M, for example, 10 ° C. to 30 ° C.
  • the vehicle air conditioner 1 absorbs heat released from the air conditioning unit 10 provided in the vehicle interior of the vehicle, the refrigerant circuit 20 provided over the vehicle interior and outside the vehicle interior, and the battery B.
  • the air conditioning unit 10 has an air flow passage 11 for circulating the air supplied to the vehicle interior.
  • an outside air intake port 11 a for allowing the air outside the vehicle interior to flow into the air flow passage 11
  • an inside air intake port 11 b for allowing the air inside the vehicle interior to flow into the air flow passage 11, Is provided.
  • a foot blow outlet (not shown) that blows air flowing through the air flow passage 11 toward the feet of the passenger, and a vent (not shown) that blows out toward the upper body of the passenger.
  • a blower outlet and a differential blower outlet (not shown) that blows out toward the vehicle interior side surface of the windshield of the vehicle are provided.
  • an inlet switching damper 13 that can open one of the outside air inlet 11a and the inside air inlet 11b and close the other is provided.
  • the inlet switching damper 13 includes an outside air supply mode in which the inside air inlet 11b is closed and the outside air inlet 11a is opened, an inside air circulation mode in which the outside air inlet 11a is closed and the inside air inlet 11b is opened, and an outside air inlet. It is possible to switch between the inside / outside air suction mode in which the outside air suction port 11a and the inside air suction port 11b are respectively opened by being positioned between 11a and the inside air suction port 11b.
  • An indoor blower 12 such as a sirocco fan for circulating air from one end side to the other end side of the air flow passage 11 is provided on one end side in the air flow passage 11.
  • a heat absorber 14 as an indoor heat exchanger for cooling and dehumidifying the air flowing through the air flow passage 11 is provided on the downstream side in the air flow direction of the indoor blower 12 in the air flow passage 11.
  • a radiator 15 as an indoor heat exchanger for heating the air flowing through the air flow passage 11 is provided on the air flow passage 11 downstream of the heat absorber 14 in the air flow direction.
  • the heat radiator 15 is disposed on one side in the orthogonal direction of the air flow passage 11, and a radiator bypass flow passage 11 c that bypasses the heat radiator 15 is formed on the other side in the orthogonal direction of the air flow passage 11.
  • An air heater 16 for heating the air supplied to the passenger compartment is provided on the downstream side in the air flow direction of the radiator 15 in the air flow passage 11.
  • an air mix damper 17 is provided for adjusting the proportion of air heated by the radiator 15 out of the air that has passed through the heat absorber 14. ing.
  • the air mix damper 17 closes one air flow direction upstream side of the radiator bypass flow passage 11c and the radiator 15 and opens the other on the upstream side in the air flow direction of the heat radiator 15 and the heat radiator bypass flow passage 11c.
  • both the radiator bypass flow passage 11c and the radiator 15 are opened, and the opening degree of the radiator 15 on the upstream side in the air flow direction is adjusted.
  • the air mix damper 17 closes the upstream side in the air flow direction of the radiator 15 in the air flow passage 11 and opens the radiator bypass flow passage 11c, and the opening degree becomes 0%.
  • the opening degree is 100% in a state where the upstream side in the air flow direction is opened and the radiator bypass flow passage 11c is closed.
  • the refrigerant circuit 20 circulates through the heat absorber 14, the radiator 15, the compressor 21 for compressing the refrigerant, the outdoor heat exchanger 22 for exchanging heat between the refrigerant and the air outside the passenger compartment, and the refrigerant circuit 20.
  • the first heat medium heat exchanger 23a as a first heat medium radiator for exchanging heat between the refrigerant and the first heat medium flowing through the first heat medium circuit 30, the refrigerant flowing through the refrigerant circuit 20, and the second heat
  • the second heat medium heat exchanger 23b as a second heat medium radiator for exchanging heat with the second heat medium flowing through the medium circuit 40, and the valve opening degree can be adjusted between fully closed and fully opened.
  • the second check valves 26a and 26b separate the gas refrigerant and the liquid refrigerant into the liquid Refrigerant has an accumulator 27 for preventing sucked into the compressor 21, which are connected, for example, an aluminum tube or copper tube.
  • R-134a or the like is used as the refrigerant flowing through the refrigerant circuit 20.
  • a refrigerant flow passage 20 a is formed on the refrigerant discharge side of the compressor 21 by connecting the refrigerant inflow side of the radiator 15.
  • a refrigerant flow path 20 b is formed on the refrigerant outflow side of the radiator 15 by connecting the refrigerant inflow side of the outdoor heat exchanger 22.
  • a first expansion valve 24a is provided in the refrigerant flow passage 20b.
  • a refrigerant flow passage 20 c is formed on the refrigerant outflow side of the outdoor heat exchanger 22 by connecting the refrigerant inflow side of the heat absorber 14.
  • the refrigerant flow passage 20c is provided with a first check valve 26a and a second expansion valve 24b in order from the outdoor heat exchanger 22 side.
  • a refrigerant flow passage 20 d is formed on the refrigerant outflow side of the heat absorber 14 by connecting the refrigerant intake side of the compressor 21.
  • a second check valve 26b and an accumulator 27 are provided in this order from the heat absorber 14 side.
  • the outdoor heat exchanger 22 is bypassed between the radiator 15 and the first expansion valve 24a in the refrigerant flow passage 20b, and the first check valve 26a and the second expansion valve 24b in the refrigerant flow passage 20c are bypassed.
  • a refrigerant flow passage 20e is formed by connecting the two.
  • a first electromagnetic valve 25a is provided in the refrigerant flow passage 20e.
  • a refrigerant flow passage 20f is formed by connecting the refrigerant inflow side of the first heat medium heat exchanger 23a between the connection portion of the refrigerant flow passage 20e in the refrigerant flow passage 20c and the second expansion valve 24b. Yes.
  • a third expansion valve 24c is provided in the refrigerant flow passage 20f.
  • a refrigerant flow passage 20g is formed on the refrigerant outflow side of the first heat medium heat exchanger 23a by connecting the refrigerant inflow side of the second heat medium heat exchanger 23b.
  • a refrigerant flow passage 20h is formed on the refrigerant outflow side of the second heat medium heat exchanger 23b by connecting the second check valve 26b and the accumulator 27 in the refrigerant flow passage 20d.
  • the refrigerant flow passage is connected between the outdoor heat exchanger 22 and the first check valve 26a in the refrigerant flow passage 20c. 20i is formed. A second electromagnetic valve 25b is provided in the refrigerant flow passage 20i.
  • the first heat medium circuit 30 heats the first heat medium heat exchanger 23 a, the first heat medium pump 31 for pumping the first heat medium, and the first heat medium flowing through the first heat medium circuit 30.
  • a heat medium heater 32, a first heat medium three-way valve 33, and a battery B for storing electric power for vehicle travel which are connected by, for example, an aluminum tube or a copper tube.
  • an antifreeze liquid such as ethylene glycol is used as ethylene glycol.
  • a heat medium flow passage 30 a is formed on the heat medium discharge side of the first heat medium pump 31 by connecting the heat medium inlet of the first heat medium three-way valve 33.
  • a heat medium flow passage 30b is formed by connecting the heat medium inflow side of the first heat medium heat exchanger 23a to one of the two heat medium outlets of the first heat medium three-way valve 33.
  • a heat medium flow passage 30c is formed on the heat medium outflow side of the first heat medium heat exchanger 23a by connecting the heat medium inflow side of the battery B.
  • a heat medium heater 32 is provided in the heat medium flow passage 30c.
  • a heat medium flow passage 30 d is formed on the heat medium outflow side of the battery B by connecting the heat medium suction side of the first heat medium pump 31.
  • the other heat medium outlet of the first heat medium three-way valve 33 bypasses the first heat medium heat exchanger 23a and is upstream of the heat medium heater 32 in the heat medium flow direction in the heat medium flow passage 30c. By connecting, a heat medium flow passage 30e is formed.
  • the first heat medium three-way valve 33 switches the point where the heat medium flow path 30a communicates to the heat medium flow path 30b side or the heat medium flow path 30e side.
  • the second heat medium circuit 40 includes a second heat medium heat exchanger 23b, a second heat medium pump 41 for pumping the second heat medium, a second heat medium flowing through the second heat medium circuit 40, and the outside of the vehicle compartment.
  • an antifreeze such as ethylene glycol is used as ethylene glycol.
  • a heat medium flow passage 40 a is formed on the heat medium discharge side of the second heat medium pump 41 by connecting the heat medium inflow side of the electric motor M.
  • a heat medium flow passage 40 b is formed on the heat medium outflow side of the electric motor M by connecting the heat medium inlet of the second heat medium three-way valve 43.
  • one of the heat medium outlets is connected to the heat medium inflow side of the second heat medium heat exchanger 23b, so that the heat medium flow path 40c. Is formed.
  • a heat medium flow passage 40d is formed on the heat medium outflow side of the second heat medium heat exchanger 23b by connecting the heat medium suction side of the second heat medium pump 41.
  • a heat medium flow passage 40 e is formed at the other heat medium outlet of the second heat medium three-way valve 43 by connecting the heat medium inflow side of the radiator 42.
  • a heat medium flow passage 40 f is formed on the heat medium outflow side of the radiator 42 by connecting the heat medium suction side of the second heat medium pump 41.
  • the second heat medium three-way valve 43 switches the destination of the heat medium flow path 40b to the heat medium flow path 40c side or the heat medium flow path 40e side.
  • the outdoor heat exchanger 22 and the radiator 42 are heat exchangers composed of fins and tubes, and are arranged in the front-rear direction of the vehicle, which is the direction of air flow outside the vehicle compartment such as the engine room. In the vicinity of the outdoor heat exchanger 22 and the radiator 42, an outdoor fan 22a is provided for circulating air outside the passenger compartment in the front-rear direction when the vehicle is stopped.
  • the air temperature and humidity of the passenger compartment are adjusted using the air conditioning unit 10 and the refrigerant circuit 20.
  • the air blower 12 is driven in the air conditioning unit 10 and the opening of the air mix damper 17 is set to 0%.
  • the first expansion valve 24a is fully opened
  • the second expansion valve 24b is opened to a predetermined degree
  • the third expansion valve 24c is fully closed
  • the first electromagnetic valve 25a is closed
  • the second electromagnetic valve 25b is closed.
  • the compressor 21 is driven in the closed state.
  • the refrigerant discharged from the compressor 21 is, as shown by the solid line arrows in FIG. 1, the refrigerant flow passage 20a, the radiator 15, the refrigerant flow passage 20b, the outdoor heat exchanger 22, the refrigerant flow passage 20c, and the heat absorption. Circulates in the order of the compressor 14 and the refrigerant flow passage 20d and is sucked into the compressor 21.
  • the refrigerant flowing through the refrigerant circuit 20 is radiated in the outdoor heat exchanger 22 and is absorbed in the heat absorber 14 without being radiated in the radiator 15 because the opening degree of the air mix damper 17 is 0%.
  • the air flowing through the air flow passage 11 is cooled and blown out into the passenger compartment by exchanging heat with the refrigerant that absorbs heat in the heat absorber 14.
  • the opening degree of the air mix damper 17 of the air conditioning unit 10 is opened larger than 0% in the refrigerant flow path of the refrigerant circuit 20 during the cooling operation. Set to degrees.
  • the refrigerant flowing through the refrigerant circuit 20 dissipates heat in the radiator 15 and the outdoor heat exchanger 22 and absorbs heat in the heat absorber 14.
  • the air flowing through the air flow passage 11 is dehumidified and cooled by exchanging heat with the refrigerant that absorbs heat in the heat absorber 14, heated to the target blowing temperature in the radiator 15, and blown into the vehicle interior.
  • the predetermined expansion degree of the first expansion valve 24a that is smaller than the full opening is set in the refrigerant flow path of the refrigerant circuit 20 during the cooling operation.
  • the opening degree of the air mix damper 17 of the air conditioning unit 10 is set to an opening degree larger than 0%.
  • the refrigerant flowing through the refrigerant circuit 20 dissipates heat in the radiator 15 and absorbs heat in the outdoor heat exchanger 22 and the heat absorber 14.
  • the air flowing through the air flow path 11 of the air conditioning unit 10 is dehumidified and cooled by exchanging heat with the refrigerant that absorbs heat in the heat absorber 14, and is heated to the target blowing temperature and blown out in the radiator 15.
  • the air blower 12 is driven in the air conditioning unit 10 and the air mix damper 17 is set to an opening larger than 0%.
  • the first expansion valve 24a has a predetermined valve opening smaller than fully open, the second expansion valve 24b and the third expansion valve 24c are fully closed, the first electromagnetic valve 25a is closed, and the second electromagnetic valve The compressor 21 is driven with 25b open.
  • the refrigerant discharged from the compressor 21 is one of the refrigerant flow passage 20a, the radiator 15, the refrigerant flow passage 20b, the outdoor heat exchanger 22, and the refrigerant flow passage 20c as shown by the broken arrows in FIG. Part, the refrigerant flow passage 20i, and a part of the refrigerant flow passage 20d are circulated in this order and sucked into the compressor 21.
  • the refrigerant flowing through the refrigerant circuit 20 dissipates heat in the radiator 15 and absorbs heat in the outdoor heat exchanger 22.
  • the air flowing through the air flow passage 11 of the air conditioning unit 10 is heated and blown into the vehicle interior by exchanging heat with the refrigerant radiating heat in the radiator 15 without exchanging heat with the refrigerant in the heat absorber 14.
  • the battery B is cooled as shown in FIGS. 2 and 3 in a state where the temperature and humidity in the passenger compartment are adjusted using the air conditioning unit 10 and the refrigerant circuit 20.
  • the battery cooling operation for cooling the motor and the motor cooling operation for cooling the electric motor M are performed.
  • the motor cooling operation includes a first motor cooling operation for releasing heat released from the electric motor M into the air outside the passenger compartment via the radiator 42, as shown in FIG. As shown, it is possible to perform a second motor cooling operation for discharging to the refrigerant flowing through the refrigerant circuit 20 via the second heat medium heat exchanger 23b.
  • the third expansion valve 24c is set to a predetermined valve opening, and in the first heat medium circuit 30, the flow path of the first heat medium three-way valve 33 is set as the heat medium flow path 30b. And the first heat medium pump 31 is driven.
  • the flow path of the second heat medium three-way valve 43 is set on the heat medium flow path 40e side, and the second heat medium pump 41 is driven.
  • the refrigerant flowing through the refrigerant circuit 20 flows through the refrigerant flow passage 20f, flows into the first heat medium heat exchanger 23a, absorbs heat, flows through the refrigerant flow passage 20h, and passes through the refrigerant flow passage. 20d joins and is sucked into the compressor 21.
  • the second heat medium heat exchanger 23b since the second heat medium does not flow through the flow path on the heat medium side, the refrigerant does not exchange heat with the second heat medium.
  • the first heat medium flowing through the first heat medium circuit 30 is heated by heat released from the battery B, and is cooled by exchanging heat with the refrigerant that absorbs heat in the first heat medium heat exchanger 23a.
  • the battery B is cooled by the first heat medium exchanged with the refrigerant via the first heat medium heat exchanger 23a.
  • the second heat medium flowing through the second heat medium circuit 40 is heated by the heat released from the electric motor M as shown in FIG. It is cooled by exchanging heat with it.
  • the electric motor M is cooled by the second heat medium that exchanges heat with the air outside the passenger compartment via the radiator 42.
  • the third expansion valve 24c is set to a predetermined valve opening degree in the refrigerant circuit 20, and the first heat medium three-way is set in the first heat medium circuit 30.
  • the flow path of the valve 33 is connected to the heat medium flow passage 30d side, and the first heat medium pump 31 is driven.
  • the flow path of the second heat medium three-way valve 43 is set to the heat medium flow path 40c side, and the second heat medium pump 41 is driven.
  • the second heat medium flowing through the second heat medium circuit 40 is heated by the heat released from the electric motor M, and in the second heat medium heat exchanger 23b. It is cooled by exchanging heat with the refrigerant.
  • the electric motor M is cooled by the second heat medium exchanged with the refrigerant in the second heat medium heat exchanger 23b.
  • the refrigerant flowing through the refrigerant circuit 20 first exchanges heat with the first heat medium in the first heat medium heat exchanger 23a, and then the second heat.
  • the medium circuit 40 exchanges heat with the second heat medium.
  • the target cooling temperature of the first heat medium is set to a temperature lower than the target cooling temperature of the second heat medium.
  • the refrigerant flowing through the refrigerant circuit 20 absorbs heat in the first heat medium heat exchanger 23a and then absorbs heat in the second heat medium heat exchanger 23b, so that the heat absorption amount in the first heat medium heat exchanger 23a is increased. Is possible. Therefore, the first heat medium flowing through the first heat medium circuit 30 can be cooled to a lower temperature than the second heat medium flowing through the second heat medium circuit 40.
  • the electric motor M is cooled by the second motor cooling operation as shown in FIG. Battery heating operation can be performed when heating is required.
  • the flow path of the first heat medium three-way valve 33 is set on the heat medium flow path 30 e side, the first heat medium pump 31 is driven, and the heat medium heater 32. Drive.
  • the first heat medium flowing through the first heat medium circuit 30 is heated by the heat medium heater 32.
  • the battery B is heated by the first heat medium heated by the heat medium heater 32.
  • the first heat medium circuit 30 and the second heat medium circuit 40 are used. It is possible to make up for an insufficient amount of heat absorption by causing the refrigerant to absorb heat radiated from one or both of the above.
  • the refrigerant circuit 20 that adjusts the temperature or humidity of the air in the vehicle interior by exchanging heat between the air supplied to the vehicle interior and the refrigerant, and the battery B
  • a first heat medium circuit 30 through which a first heat medium that absorbs heat released from the refrigerant flows
  • a second heat medium circuit 40 through which a second heat medium that absorbs heat released from the electric motor M flows
  • a refrigerant A first heat medium heat exchanger 23a for exchanging heat between the refrigerant flowing through the circuit 20 and the first heat medium flowing through the first heat medium circuit 30 to release heat from the first heat medium to the refrigerant; and the refrigerant circuit 20
  • the second heat medium is connected to the downstream side of the first heat medium heat exchanger 23a in the refrigerant flow direction, and exchanges heat between the refrigerant flowing through the refrigerant circuit 20 and the second heat medium flowing through the second heat medium circuit 40.
  • the first heat medium can be cooled to a temperature lower than that of the second heat medium. Therefore, the temperature of the battery B cooled by the first heat medium is cooled by the second heat medium. It becomes possible to cool to a temperature lower than the temperature of M, and by connecting the battery B and the electric motor M to the first heat medium circuit 30 or the second heat medium circuit 40 in accordance with the target cooling temperature, it is complicated. It is possible to easily set the battery B and the electric motor M to the target cooling temperatures without performing any control.
  • the first heat medium flowing through the first heat medium circuit 30 is set to a target cooling temperature lower than that of the second heat medium flowing through the second heat medium circuit 40.
  • the battery B whose target cooling temperature is lower than that of the electric motor M can be reliably cooled to the target cooling temperature by being connected to the first heat medium circuit 30.
  • the second heat medium circuit 40 bypasses the second heat medium heat exchanger 23b and circulates the second heat medium through the heat medium flow paths 40e and 40f and the second heat medium flow paths 40e and 40f.
  • a radiator 42 for exchanging heat between the heat medium and air outside the passenger compartment.
  • the electric motor M can be cooled without going through the refrigerant circuit 20 and the first heat medium circuit 30.
  • the first heat medium circuit 30 has a heat medium heater 32 for heating the first heat medium that circulates.
  • the first heat medium flowing through the first heat medium circuit 30 can be heated, so that it is heated when the battery B needs to be heated, such as when the vehicle starts to run in a low temperature environment.
  • the battery B can be heated by the first heat medium.
  • the refrigerant that flows through the refrigerant circuit 20 from the first heat medium via the first heat medium heat exchanger 23a. It is possible to absorb heat.
  • the first heat medium circuit 30 is connected to a battery B for supplying electric power for traveling the vehicle, and the second heat medium circuit 40 is connected to an electric motor M for traveling the vehicle. .
  • the battery B and the electric motor M having different usable temperature zones can be cooled to different temperatures.
  • the battery B as a 1st heat radiator and the electric motor M as a 2nd heat radiator were shown as a cooling object apparatus, it is not restricted to this. If the target cooling temperature of the second radiator is higher than the target cooling temperature of the first radiator, for example, an electric motor using a power supply device such as a converter as a component of the vehicle or an electronic component as the first radiator M may be used as the second radiator.
  • the heat medium flow passages 40e and 40f that circulate the second heat medium around the second heat medium heat exchanger 23b and the heat medium flow passages 40e and 40f in the second heat medium circuit 40 Is provided with a radiator 42 for exchanging heat between the second heat medium flowing through the vehicle and air outside the passenger compartment.
  • the first heat medium circuit 30 also has a bypass flow path that circulates the heat medium bypassing the first heat medium heat exchanger 23a, and a first flow path that flows through the bypass flow path.
  • a radiator for exchanging heat between the heat medium and the air outside the vehicle compartment may be provided.
  • the first heat medium that flows through the first heat medium circuit 30 and the second heat medium that flows through the second heat medium circuit 40 are shown using antifreeze liquids, respectively. It is not something that can be done. If heat exchange is possible between the refrigerant and the first heat medium, and between the first heat medium and the second heat medium, for example, water or oil can be used as the first and second heat medium. is there.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

[Problème] Fournir un appareil de climatisation de véhicule qui peut refroidir aisément une pluralité de dispositifs ayant différentes températures de refroidissement cibles aux températures de refroidissement cibles respectives de ceux-ci. [Solution] Un appareil de climatisation de véhicule selon la présente invention est pourvu de : un premier circuit de milieu chauffant 30 à travers lequel un premier milieu chauffant qui absorbe la chaleur rayonnée par une batterie B circule ; un deuxième circuit de milieu chauffant 40 à travers lequel un deuxième milieu chauffant qui absorbe la chaleur rayonnée par un moteur électrique M circule ; un premier échangeur de chaleur de milieu chauffant 23a qui effectue un échange de chaleur entre un fluide frigorigène circulant à travers un circuit de fluide frigorigène 20 et le premier milieu de chauffage circulant à travers le premier circuit de milieu chauffant 30 de sorte que la chaleur provenant du premier milieu chauffant soit rayonnée vers le fluide frigorigène ; et un deuxième échangeur de chaleur de milieu chauffant 23b qui est raccordé au côté aval du premier échangeur de chaleur de milieu chauffant 23a dans la direction de circulation de fluide frigorigène dans le circuit de fluide frigorigène 20 et effectue un échange de chaleur entre le fluide frigorigène circulant à travers le circuit de fluide frigorigène 20 et le deuxième milieu chauffant circulant à travers le deuxième circuit de milieu chauffant 40 de sorte que la chaleur provenant du deuxième milieu chauffant soit rayonnée vers le premier milieu chauffant.
PCT/JP2019/009928 2018-05-28 2019-03-12 Appareil de climatisation de véhicule WO2019230117A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112019002760.3T DE112019002760T5 (de) 2018-05-28 2019-03-12 Fahrzeugklimaanlage
CN201980019939.3A CN111867862A (zh) 2018-05-28 2019-03-12 车用空调装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-101604 2018-05-28
JP2018101604A JP2019206215A (ja) 2018-05-28 2018-05-28 車両用空気調和装置

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CN (1) CN111867862A (fr)
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JP2023046573A (ja) * 2021-09-24 2023-04-05 サンデン株式会社 ヒートポンプ式温調装置

Citations (5)

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Publication number Priority date Publication date Assignee Title
JPH10267494A (ja) * 1997-03-25 1998-10-09 Mitsubishi Electric Corp 冷却装置
JP2006296193A (ja) * 2005-04-05 2006-10-26 Valeo Systemes Thermiques 電気自動車用バッテリの設定温度維持装置
JP2014037180A (ja) * 2012-08-13 2014-02-27 Calsonic Kansei Corp 電動車両用熱管理システム
JP2018035951A (ja) * 2016-08-29 2018-03-08 株式会社デンソー 冷凍サイクル装置
JP2018043741A (ja) * 2016-09-13 2018-03-22 現代自動車株式会社Ｈｙｕｎｄａｉ Ｍｏｔｏｒ Ｃｏｍｐａｎｙ 車両用ヒートポンプシステム

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Publication number Priority date Publication date Assignee Title
JP5884725B2 (ja) * 2012-12-25 2016-03-15 株式会社デンソー 冷凍サイクル装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10267494A (ja) * 1997-03-25 1998-10-09 Mitsubishi Electric Corp 冷却装置
JP2006296193A (ja) * 2005-04-05 2006-10-26 Valeo Systemes Thermiques 電気自動車用バッテリの設定温度維持装置
JP2014037180A (ja) * 2012-08-13 2014-02-27 Calsonic Kansei Corp 電動車両用熱管理システム
JP2018035951A (ja) * 2016-08-29 2018-03-08 株式会社デンソー 冷凍サイクル装置
JP2018043741A (ja) * 2016-09-13 2018-03-22 現代自動車株式会社Ｈｙｕｎｄａｉ Ｍｏｔｏｒ Ｃｏｍｐａｎｙ 車両用ヒートポンプシステム

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CN111867862A (zh) 2020-10-30
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