WO2014203476A1 - 車両用熱管理システム - Google Patents
車両用熱管理システム Download PDFInfo
- Publication number
- WO2014203476A1 WO2014203476A1 PCT/JP2014/002922 JP2014002922W WO2014203476A1 WO 2014203476 A1 WO2014203476 A1 WO 2014203476A1 JP 2014002922 W JP2014002922 W JP 2014002922W WO 2014203476 A1 WO2014203476 A1 WO 2014203476A1
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- WO
- WIPO (PCT)
- Prior art keywords
- heat medium
- heat
- refrigerant
- air
- heat exchanger
- Prior art date
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Classifications
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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
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
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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
- B60H1/00642—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
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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
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3228—Cooling devices using compression characterised by refrigerant circuit configurations
- B60H1/32284—Cooling devices using compression characterised by refrigerant circuit configurations comprising two or more secondary circuits, e.g. at evaporator and condenser side
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- 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
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- 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
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- 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/047—Water-cooled condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/27—Problems to be solved characterised by the stop of the refrigeration cycle
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- 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
- F25B2600/13—Pump speed control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21151—Temperatures of a compressor or the drive means therefor at the suction side of the compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
Definitions
- This disclosure relates to a thermal management system used for a vehicle.
- a relief valve is installed as a safety device when the refrigerant pressure rises excessively.
- the relief valve opens when the refrigerant pressure becomes equal to or higher than a predetermined pressure, and plays a role of releasing the refrigerant pressure to the outside of the refrigeration cycle apparatus.
- the reason why the refrigerant pressure rises excessively is that the ambient temperature around the refrigeration cycle apparatus becomes high when the refrigeration cycle apparatus stops (when the compressor stops). That is, the main equipment of the refrigeration cycle apparatus is disposed in the engine room, and the engine room becomes very hot due to heat generated from engine equipment such as an engine and an engine radiator, solar radiation in summer, and the like. As a result, the refrigerant in the refrigeration cycle apparatus also becomes very hot and the refrigerant pressure rises excessively.
- Patent Document 1 describes a vehicle air conditioner that performs air conditioning of a vehicle interior using a coolant heated or cooled by a refrigeration cycle apparatus. Specifically, in the condenser constituting the refrigeration cycle apparatus, the coolant is heated by exchanging heat between the high-temperature refrigerant and the coolant, and in the chiller constituting the refrigeration cycle apparatus, the coolant is exchanged by exchanging heat between the low-temperature refrigerant and the coolant. Cooling.
- Patent Document 1 since the high-temperature refrigerant and the coolant are exchanged in the condenser, compared with the case where the high-temperature refrigerant and the outside air are exchanged in the condenser, When the refrigeration cycle apparatus is stopped (when the compressor is stopped), the refrigerant pressure may easily rise excessively.
- the relief valve is opened and the refrigerant is likely to be released to the atmosphere.
- the time during which the refrigerant pressure is high becomes longer, the service life of the components and piping of the refrigeration cycle is shortened.
- the present disclosure aims to suppress an excessive increase in the refrigerant pressure.
- the vehicle thermal management system of the present disclosure includes a compressor, a heat exchanger for heating a heat medium, and a flow adjusting unit.
- the compressor sucks and discharges the refrigerant.
- the heat exchanger for heat medium heats the heat medium by exchanging heat between the refrigerant discharged from the compressor and a heat medium different from air.
- the flow adjusting unit causes a cooling fluid for cooling the refrigerant to flow when the compressor is stopped.
- the refrigerant can be cooled by flowing the cooling fluid, so that it is possible to suppress the refrigerant pressure from rising excessively.
- the vehicle thermal management system of the present disclosure includes a compressor, a heat exchanger for heating medium heating, a pressure reducing unit, a heat exchanger for cooling the heating medium, a heating medium air heat exchanger, a pump, a blower, and a control unit. Also good.
- the compressor sucks and discharges the refrigerant.
- the heat exchanger for heat medium heating heats the heat medium by exchanging heat between the refrigerant discharged from the compressor and a heat medium different from air.
- the decompression unit decompresses and expands the refrigerant heat-exchanged by the heat exchanger for heating the heat medium.
- the heat exchanger for cooling the heat medium cools the heat medium by exchanging heat between the refrigerant expanded in the decompression section and the heat medium.
- the heat medium air heat exchanger exchanges heat between the heat medium and air.
- the pump circulates the heat medium through the heat medium cooling heat exchanger and the heat medium air heat exchanger.
- the blower blows air to the heat medium air heat exchanger.
- the pressure of the refrigerant rises or is estimated to rise after the compressor is stopped, the heat medium is caused to flow, and the air is sent to the heat medium air heat exchanger. It can be circulated. Therefore, the refrigerant can be cooled, and an excessive increase in the refrigerant pressure can be suppressed.
- the vehicle heat management system includes a compressor, a heat exchanger for heat medium heating, a decompression unit, a heat exchanger for heat medium cooling, a heat medium air heat exchanger, a pump, and a heat exchanger for cooling an internal combustion engine.
- a blower and a control unit may be provided.
- Compressor sucks and discharges refrigerant.
- the heat exchanger for heat medium heating heats the heat medium by exchanging heat between the refrigerant discharged from the compressor and a heat medium different from air.
- the decompression unit decompresses and expands the refrigerant heat-exchanged by the heat exchanger for heating the heat medium.
- the heat exchanger for cooling the heat medium cools the heat medium by exchanging heat between the refrigerant expanded in the decompression section and the heat medium.
- the heat medium air heat exchanger exchanges heat between the heat medium and air.
- the pump circulates the heat medium through the heat medium cooling heat exchanger and the heat medium air heat exchanger.
- the heat exchanger for cooling the internal combustion engine exchanges heat between the cooling medium for cooling the internal combustion engine and the air.
- the blower blows air to the heat exchanger for cooling the internal combustion engine.
- the blower control unit operates the blower when it is determined that the internal combustion engine and the compressor are stopped and the pressure or temperature of the refrigerant exceeds or is estimated to exceed the predetermined value.
- the cooling medium for the internal combustion engine can be dissipated to the air to reduce the residual heat of the internal combustion engine.
- An increase in temperature can be suppressed.
- the vehicle thermal management system of the present disclosure may include a refrigeration cycle unit and a refrigerant flow path forming member.
- the refrigeration cycle unit is composed of a plurality of devices constituting the refrigeration cycle.
- the refrigerant flow path forming member is disposed in a low temperature region where the air temperature is lower than the region where the refrigeration cycle unit is disposed, and forms a flow path through which the refrigerant flows.
- 1 is an overall configuration diagram of a vehicle thermal management system in a first embodiment.
- 1 is a perspective perspective view showing a vehicle on which a vehicle thermal management system according to a first embodiment is arranged. It is a block diagram which shows the electric control part in the thermal management system for vehicles of 1st Embodiment. It is a flowchart which shows the control processing which the control apparatus of the thermal management system for vehicles in 1st Embodiment performs. It is a whole block diagram of the thermal management system for vehicles in 1st Embodiment, and has shown other operation modes. It is a principal part block diagram of the thermal management system for vehicles in 2nd Embodiment.
- thermal management system for vehicles in 2nd Embodiment It is a principal part block diagram of the thermal management system for vehicles in 2nd Embodiment, and has shown the state in which the vehicle is drive
- thermo management system for vehicles in 6th Embodiment It is a whole block diagram of the thermal management system for vehicles in 6th Embodiment. It is a whole block diagram of the thermal management system for vehicles in 7th Embodiment. It is a flowchart which shows the control processing which the control apparatus of the thermal management system for vehicles in 8th Embodiment performs. It is a whole block diagram of the thermal management system for vehicles in 9th Embodiment. It is a flowchart which shows the control processing which the control apparatus of the thermal management system for vehicles in 9th Embodiment performs.
- the vehicle thermal management system 10 shown in FIG. 1 is used to adjust various devices and vehicle interiors provided in the vehicle to appropriate temperatures.
- the vehicle thermal management system 10 is applied to a hybrid vehicle that obtains driving force for vehicle travel from an engine (internal combustion engine) and a travel electric motor.
- the hybrid vehicle according to the present embodiment is a plug-in hybrid vehicle that can charge power supplied from an external power source (commercial power source) when the vehicle is stopped to a battery (vehicle battery) mounted on the vehicle.
- a battery vehicle battery
- the battery for example, a lithium ion battery can be used.
- the driving force output from the engine is used not only for driving the vehicle but also for operating the generator.
- the electric power generated by the generator and the electric power supplied from the external power source can be stored in the battery, and the electric power stored in the battery constitutes the vehicle thermal management system 10 as well as the electric motor for traveling. It is supplied to various in-vehicle devices such as electric components.
- the vehicle thermal management system 10 includes a first pump 11, a second pump 12, a radiator 13, a cooling water cooler 14, a cooling water heater 15, a device 16, a cooler core 17, a heater core 18, A first switching valve 19 and a second switching valve 20 are provided.
- the first pump 11 and the second pump 12 are electric pumps that suck and discharge cooling water (heat medium).
- the cooling water is a fluid as a heat medium.
- a liquid containing at least ethylene glycol, dimethylpolysiloxane or nanofluid, or an antifreeze liquid is used as the cooling water.
- the radiator 13, the cooling water cooler 14, the cooling water heater 15 and the device 16 are cooling water distribution devices (heat medium distribution devices) through which the cooling water flows.
- the radiator 13 is a heat exchanger (heat medium outside air heat exchange, heat medium air heat exchanger) that exchanges heat between cooling water and outside air (air outside the passenger compartment).
- heat exchanger heat medium outside air heat exchange, heat medium air heat exchanger
- the radiator 13 When the temperature of the cooling water is higher than the temperature of the outside air, the radiator 13 functions as a radiator that radiates the heat of the cooling water to the outside air.
- the radiator 13 When the temperature of the cooling water is lower than the temperature of the outside air, the radiator 13 It functions as a heat absorber that absorbs heat.
- the outside air is blown to the radiator 13 by the outdoor blower 21.
- the outdoor blower 21 is a blower that blows outside air to the radiator 13 and is configured by an electric blower.
- the radiator 13 and the outdoor blower 21 are arranged at the foremost part of the vehicle. For this reason, the traveling wind can be applied to the radiator 13 when the vehicle is traveling.
- the cooling water cooler 14 is a cooling device that cools the cooling water. Specifically, the cooling water cooler 14 heats the low pressure side refrigerant of the refrigeration cycle 22 and the cooling water to exchange heat, thereby cooling the cooling water (a heat exchanger for heat medium cooling or a heat exchanger). Medium refrigerant heat exchanger).
- the cooling water inlet side (heat medium inlet side) of the cooling water cooler 14 is connected to the cooling water discharge side (heat medium discharge side) of the first pump 11.
- the cooling water heater 15 is a heater that heats the cooling water. Specifically, the cooling water heater 15 heats the cooling water by exchanging heat between the high-pressure side refrigerant of the refrigeration cycle 22 and the cooling water (a heat exchanger for heat medium heating, a heat medium). Refrigerant heat exchanger).
- the cooling water inlet side (heat medium inlet side) of the cooling water heater 15 is connected to the cooling water discharge side (heat medium discharge side) of the second pump 12.
- the refrigeration cycle 22 is a vapor compression refrigerator that includes a compressor 23, a cooling water heater 15, an expansion valve 24, and a cooling water cooler 14.
- a chlorofluorocarbon refrigerant is used as the refrigerant, and a subcritical refrigeration cycle in which the high-pressure side refrigerant pressure does not exceed the critical pressure of the refrigerant is configured.
- the compressor 23 is an electric compressor driven by electric power supplied from the battery, and sucks, compresses and discharges the refrigerant of the refrigeration cycle 22.
- a relief valve 25 is arranged on the refrigerant discharge side of the compressor 23.
- the relief valve 25 is a pressure relief part that opens when the pressure of the refrigerant becomes equal to or higher than a predetermined pressure and releases the refrigerant pressure to the outside of the refrigeration cycle 22.
- the cooling water heater 15 is a condenser that condenses the high-pressure side refrigerant by exchanging heat between the high-pressure side refrigerant discharged from the compressor 23 and the cooling water.
- the expansion valve 24 is a decompression unit that decompresses and expands the liquid-phase refrigerant that has flowed out of the cooling water heater 15.
- the cooling water cooler 14 is an evaporator that evaporates the low pressure refrigerant by exchanging heat between the low pressure refrigerant decompressed and expanded by the expansion valve 24 and the cooling water.
- the gas-phase refrigerant evaporated in the cooling water cooler 14 is sucked into the compressor 23 and compressed.
- the cooling water In the radiator 13, the cooling water is cooled by outside air, whereas in the cooling water cooler 14, the cooling water is cooled by the low-pressure refrigerant of the refrigeration cycle 22. For this reason, the radiator 13 cannot cool the cooling water to a temperature lower than the temperature of the outside air, whereas the cooling water cooler 14 can cool the cooling water to a temperature lower than the temperature of the outside air. That is, the temperature of the cooling water cooled by the cooling water cooler 14 can be made lower than the temperature of the cooling water cooled by the radiator 13.
- the device 16 is a device (a temperature adjustment target device) that has a flow path through which the cooling water flows and that exchanges heat with the cooling water.
- Examples of the device 16 include an inverter, a battery, a battery temperature control heat exchanger, a traveling electric motor, an engine device, a cold storage heat body, a ventilation heat recovery heat exchanger, a cooling water cooling water heat exchanger, and the like.
- An inverter is a power conversion device that converts DC power supplied from a battery into AC voltage and outputs the AC voltage to a traveling electric motor.
- the battery temperature control heat exchanger is a heat exchanger (air heat medium heat exchanger) that is arranged in a ventilation path to the battery and exchanges heat between air and cooling water.
- Engine devices are, for example, turbochargers, intercoolers, EGR coolers, CVT warmers, CVT coolers, exhaust heat recovery devices, and the like.
- the turbocharger is a supercharger that supercharges engine intake air (intake).
- the intercooler is an intake air cooler (intake heat medium heat exchanger) that cools the supercharged intake air by exchanging heat between the supercharged intake air that has been compressed by the turbocharger and becomes high temperature and the cooling water.
- the EGR cooler is an exhaust cooling water heat exchanger (exhaust heat medium heat exchanger) that cools exhaust gas by exchanging heat between engine exhaust gas (exhaust gas) returned to the intake side of the engine and cooling water.
- CVT warmer is a lubricating oil cooling water heat exchanger (lubricating oil heat medium heat exchanger) that heats CVT oil by exchanging heat between lubricating oil (CVT oil) that lubricates CVT (continuously variable transmission) and cooling water. It is.
- the CVT cooler is a lubricating oil cooling water heat exchanger (lubricating oil heat medium heat exchanger) that cools the CVT oil by exchanging heat between the CVT oil and the cooling water.
- lubricating oil cooling water heat exchanger lubricating oil heat medium heat exchanger
- the exhaust heat recovery unit is an exhaust cooling water heat exchanger (exhaust heat medium heat exchanger) that exchanges heat between the exhaust and the cooling water to absorb the heat of the exhaust into the cooling water.
- exhaust cooling water heat exchanger exhaust heat medium heat exchanger
- the cold storage heat storage body stores the heat or cold energy of the cooling water.
- Examples of the cold storage body include a chemical heat storage material, a heat retaining tank, a latent heat storage body (paraffin or hydrate-based substance), and the like.
- the ventilation heat recovery heat exchanger is a heat exchanger that recovers the heat (cold or hot) that is thrown out by ventilation.
- a ventilation heat recovery heat exchanger recovers heat (cold heat or hot heat) that is thrown out by ventilation, thereby reducing power required for air conditioning.
- the cooling water cooling water heat exchanger is a heat exchanger that exchanges heat between cooling water and cooling water.
- a cooling water cooling water heat exchanger includes cooling water (cooling water circulated by the first pump 11 or the second pump 12) of the vehicle thermal management system 10 and an engine cooling circuit (cooling water for engine cooling). Heat can be exchanged between the vehicle thermal management system 10 and the engine cooling circuit by exchanging heat with the cooling water in the circulating circuit).
- the cooler core 17 is an air cooling heat exchanger (air cooler) that cools the air into the vehicle interior by exchanging heat between the cooling water and the air into the vehicle interior. Therefore, the cooling water cooled by the cooling water cooler 14 or a device that generates cold heat needs to flow through the cooler core 17.
- air cooling heat exchanger air cooler
- the heater core 18 is an air heating heat exchanger (air heater) for exchanging heat between the air into the vehicle interior and the cooling water to heat the air into the vehicle interior. Therefore, it is necessary for the cooling water heated by the cooling water heater 15 or a device that generates heat to flow through the heater core 18.
- air heating heat exchanger air heater
- the cooler core 17 and the heater core 18 are blown by the indoor blower 26 with the inside air (vehicle interior air), the outside air, or the mixed air of the inside air and the outside air.
- the indoor blower 26 is a blower that blows air to the cooler core 17 and the heater core 18, and is configured by an electric blower.
- the cooler core 17, the heater core 18, and the indoor blower 26 are accommodated in a casing 28 of an indoor air conditioning unit 27 of the vehicle air conditioner.
- the indoor air conditioning unit 27 is disposed inside the instrument panel (instrument panel) at the forefront of the vehicle interior.
- the casing 28 forms an outer shell of the indoor air conditioning unit 27.
- the casing 28 forms an air passage for air to be blown into the passenger compartment, and is formed of a resin (for example, polypropylene) having a certain degree of elasticity and excellent strength.
- a resin for example, polypropylene
- An inside / outside air switching device (not shown) is arranged on the most upstream side of the passenger compartment air flow in the casing 28.
- the inside / outside air switching device is an inside / outside air introduction unit that switches and introduces inside air and outside air into the casing 28.
- An opening is formed in the most downstream portion of the air flow of the casing 28 to blow out the conditioned air whose temperature is adjusted by the cooler core 17 and the heater core 18 into the vehicle interior that is the air-conditioning target space.
- the first pump 11 is disposed in the first pump flow path 31.
- a cooling water cooler 14 is disposed on the cooling water discharge side of the first pump 11 in the first pump flow path 31.
- the second pump 12 is disposed in the second pump flow path 32.
- a cooling water heater 15 is disposed on the cooling water discharge side of the second pump 12 in the second pump flow path 32.
- the radiator 13 is disposed in the radiator flow path 33.
- the device 16 is disposed in the device flow path 36.
- the cooler core 17 is disposed in the cooler core flow path 37.
- the heater core 18 is disposed in the heater core flow path 38.
- the first pump flow path 31, the second pump flow path 32, the radiator flow path 33, the equipment flow path 36, the cooler core flow path 37, and the heater core flow path 38 are the first switching valve 19 and the second switching path. Connected to the valve 20.
- the first switching valve 19 and the second switching valve 20 are switching units (heat medium flow switching units) that switch the flow of cooling water.
- the first switching valve 19 is a multi-way valve having a large number of ports (first switching valve ports) constituting the inlet or outlet of the cooling water. Specifically, the first switching valve 19 has a first inlet 19a and a second inlet 19b as cooling water inlets, and first to third outlets 19c to 19e as cooling water outlets.
- the second switching valve 20 is a multi-way valve having a large number of ports (second switching valve ports) constituting an inlet or an outlet of the cooling water. Specifically, the second switching valve 20 has a first outlet 20a and a second outlet 20b as cooling water outlets, and first to third inlets 20c to 20e as cooling water inlets.
- One end of the first pump flow path 31 is connected to the first inlet 19 a of the first switching valve 19.
- the cooling water outlet side of the cooling water cooler 14 is connected to the first inlet 19 a of the first switching valve 19.
- One end of a cooler core flow path 37 is connected to a portion of the first pump flow path 31 between the cooling water cooler 14 and the first switching valve 19.
- the coolant inlet side of the cooler core 17 is connected to the coolant outlet side of the coolant cooler 14.
- One end of the second pump flow path 32 is connected to the second inlet 19b of the first switching valve 19.
- the cooling water outlet side of the cooling water heater 15 is connected to the second inlet 19 b of the first switching valve 19.
- One end of a radiator flow path 33 is connected to the first outlet 19c of the first switching valve 19.
- the cooling water inlet side of the radiator 13 is connected to the first outlet 19 c of the first switching valve 19.
- One end of a device flow path 36 is connected to the second outlet 19d of the first switching valve 19.
- the cooling water inlet side of the device 16 is connected to the second outlet 19 d of the first switching valve 19.
- One end of the heater core flow path 38 is connected to the third outlet 19e of the first switching valve 19.
- the cooling water inlet side of the heater core 18 is connected to the third outlet 19 e of the first switching valve 19.
- the other end of the first pump flow path 31 is connected to the first outlet 20a of the second switching valve 20.
- the cooling water suction side of the first pump 11 is connected to the first outlet 20 a of the second switching valve 20.
- the other end of the second pump flow path 32 is connected to the second outlet 20b of the second switching valve 20.
- the cooling water suction side of the second pump 12 is connected to the second outlet 20 b of the second switching valve 20.
- the other end of the heater core channel 38 is connected to a portion of the second pump channel 32 between the second switching valve 20 and the second pump 12.
- the coolant outlet side of the heater core 18 is connected to the coolant intake side of the second pump 12.
- the other end of the radiator flow path 33 is connected to the first inlet 20c of the second switching valve 20.
- the cooling water outlet side of the radiator 13 is connected to the first inlet 20 c of the second switching valve 20.
- the other end of the device flow path 36 is connected to the second inlet 20d of the second switching valve 20.
- the cooling water outlet side of the device 16 is connected to the second inlet 20 d of the second switching valve 20.
- the other end of the cooler core flow path 37 is connected to the third inlet 20e of the second switching valve 20.
- the cooling water outlet side of the cooler core 17 is connected to the third inlet 20 e of the second switching valve 20.
- the first switching valve 19 can arbitrarily or selectively switch the communication state between the inlets 19a and 19b and the outlets 19c to 19e.
- the second switching valve 20 can also arbitrarily or selectively switch the communication state between the outlets 20a and 20b and the inlets 20c to 20e.
- the first switching valve 19 is configured so that the cooling water discharged from the first pump 11 flows into the radiator 13, the device 16, and the heater core 18, and the cooling water discharged from the second pump 12. Is switched between a state in which the coolant flows and a state in which the cooling water discharged from the first pump 11 and the cooling water discharged from the second pump 12 do not flow.
- the second switching valve 20 includes a state in which cooling water flows out to the first pump 11, a state in which cooling water flows out to the second pump 12, a first pump 11, The state where the cooling water does not flow out to the second pump 12 is switched.
- Each of the first switching valve 19 and the second switching valve 20 includes a case forming an outer shell and a valve body accommodated in the case. An inlet and an outlet of the cooling water are formed at predetermined positions of the case, and the communication state between the inlet and the outlet of the cooling water is changed by rotating the valve body.
- valve body of the first switching valve 19 and the valve body of the second switching valve 20 are independently rotationally driven by separate electric motors.
- the valve body of the first switching valve 19 and the valve body of the second switching valve 20 may be rotationally driven in conjunction with a common electric motor.
- the first switching valve 19 may be composed of a plurality of valve bodies.
- the second switching valve 20 may be composed of a plurality of valve bodies.
- the valve body of the first switching valve 19 and the valve body of the second switching valve 20 may be mechanically connected.
- the valve body of the first switching valve 19 and the valve body of the second switching valve 20 may be integrally formed.
- the first pump 11, the second pump 12, the cooling water cooler 14, the cooling water heater 15, the first switching valve 19, the second switching valve 20, the compressor 23, the expansion valve 24, and the relief valve 25 are a refrigeration cycle unit. 40.
- the refrigeration cycle unit 40 includes a first pump 11, a second pump 12, a cooling water cooler 14, a cooling water heater 15, a first switching valve 19, a second switching valve 20, a compressor 23, an expansion valve 24, and a relief valve.
- a housing (not shown) for housing 25 is included.
- the refrigeration cycle unit 40 is disposed in the engine room 1 at the front of the vehicle.
- the radiator 13 and the outdoor blower 21 are disposed at the forefront of the vehicle.
- the cooler core 17 and the heater core 18 housed in the casing 28 of the indoor air conditioning unit 27 are arranged inside an instrument panel (instrument panel) provided at the foremost part in the passenger compartment 2.
- the engine room 1 is an engine housing space for housing the engine, and is formed outside the vehicle compartment by a vehicle body member. In the vehicle front-rear direction, the engine room 1 is formed on the rear side of the frontmost part of the vehicle and on the front side of the firewall (not shown).
- the firewall is a partition wall that partitions the vehicle compartment 2 and the engine compartment 1.
- the engine room 1 is formed below the hood hood and above the lowest part of the vehicle body in the vertical direction of the vehicle.
- the engine room 1 is formed inside the fender in the vehicle left-right direction.
- an engine 16A, an inverter 16B, and a battery 16C are provided as the device 16.
- Engine 16A and inverter 16B are arranged in engine room 1 of the vehicle.
- the battery 16C is disposed in the trunk room 3 at the rear of the vehicle.
- the control device (ECU) 50 includes a known microcomputer including a CPU, a ROM, a RAM, and the like and peripheral circuits thereof.
- the control device performs various calculations and processes based on the air conditioning control program stored in the ROM, and the first pump 11, the second pump 12, the outdoor blower 21, the compressor 23, and the indoor blower connected to the output side. 26, controls the operation of the switching valve electric motor 51 and the like.
- the switching valve electric motor 51 is a switching valve drive unit that drives the valve body of the first switching valve 19 and the valve body of the second switching valve 20.
- an electric motor for driving the valve body of the first switching valve 19 and an electric motor for driving the valve body of the second switching valve 20 are provided separately.
- the control device 50 is configured integrally with a control unit that controls various control target devices connected to the output side.
- the configuration (hardware and software) that controls the operation of each control target device constitutes a control unit that controls the operation of each control target device.
- the configuration (hardware and software) for controlling the operation of the first pump 11 and the second pump 12 is the pump control unit 50a.
- the pump control unit 50a is a flow adjusting unit that causes cooling water to flow.
- the pump control unit 50a may be configured separately from the control device 50.
- the configuration (hardware and software) for controlling the operation of the outdoor fan 21 is the outdoor fan controller 50b (fan controller). You may comprise the outdoor air blower control part 50b with respect to the control apparatus 50 separately.
- the configuration (hardware and software) for controlling the operation of the compressor 23 is the compressor control unit 50c.
- the compressor control unit 50c may be configured separately from the control device 50.
- the configuration (hardware and software) for controlling the operation of the indoor blower 26 is an indoor blower control unit 50d (blower control unit).
- the indoor fan control unit 50d may be configured separately from the control device 50.
- the configuration (hardware and software) for controlling the operation of the switching valve electric motor 51 is referred to as a switching valve control unit 50e.
- the switching valve control unit 50e may be configured separately from the control device 50.
- Detecting signals of sensor groups such as the inside air sensor 52, the outside air sensor 53, the first water temperature sensor 54, the second water temperature sensor 55, and the refrigerant temperature sensor 56 are input to the input side of the control device 50.
- the inside air sensor 52 is a detector (inside air temperature detector) that detects the inside air temperature (in-vehicle temperature).
- the outside air sensor 53 is a detector (outside air temperature detector) that detects outside air temperature (vehicle compartment outside temperature).
- the first water temperature sensor 54 is a detector (first heat medium temperature detector) that detects the temperature of the cooling water flowing through the first pump flow path 31 (for example, the temperature of the cooling water flowing out of the cooling water cooler 14). is there.
- the second water temperature sensor 55 is a detector (second heat medium temperature detector) that detects the temperature of the cooling water flowing through the second pump flow path 32 (for example, the temperature of the cooling water flowing out of the cooling water heater 15). is there.
- the refrigerant temperature sensor 56 is a detector (refrigerant temperature detector) that detects the refrigerant temperature of the refrigeration cycle 22 (for example, the temperature of the refrigerant discharged from the compressor 23 or the temperature of the cooling water flowing out of the cooling water cooler 14). It is.
- the refrigerant temperature sensor 56 may be arranged in a heat exchanger arranged in the refrigeration cycle 22 as necessary.
- the inside air temperature, the outside air temperature, the cooling water temperature, and the refrigerant temperature may be estimated based on detection values of various physical quantities.
- a refrigerant pressure sensor for detecting the refrigerant pressure of the refrigeration cycle 22 (for example, the pressure of the refrigerant discharged from the compressor 23 or the pressure of the cooling water flowing out of the cooling water cooler 14) is arranged. It may be.
- the air conditioner switch 57 is a switch for switching on / off of the air conditioner, and is disposed near the instrument panel in the passenger compartment.
- the control device 50 is switched to various operation modes by controlling the operations of the first pump 11, the second pump 12, the compressor 23, the switching valve electric motor 51, and the like.
- the first pump flow path 31, the radiator flow path 33, the equipment flow path 36, the cooler core flow path 37, and the heater core flow path 38 may be used as the first coolant circuit (first 1 heat medium circuit) is formed.
- the second cooling water circuit (the second cooling water circuit (second) is composed of at least one other of the second pump flow channel 32, the radiator flow channel 33, the device flow channel 36, the cooler core flow channel 37, and the heater core flow channel 38. A heat medium circuit) is formed.
- Each of the radiator flow path 33, the equipment flow path 36, the cooler core flow path 37, and the heater core flow path 38 is connected to the first cooling water circuit, and is connected to the second cooling water circuit.
- the device 16 when the cooling water cooler 14 and the device 16 are connected to the same cooling circuit, the device 16 can be cooled by the cooling water cooled by the cooling water cooler 14. When the cooling water heater 15 and the device 16 are connected to the same cooling circuit, the device 16 can be heated by the cooling water heated by the cooling water heater 15.
- the cooling water cooler 14 and the cooler core 17 are connected to the same cooling circuit, the air inside the vehicle interior can be cooled by the cooler core 17 so that the vehicle interior can be cooled.
- the cooling water heater 15 and the heater core 18 are connected to the same cooling circuit, the air inside the vehicle interior can be heated by the heater core 18 to heat the vehicle interior.
- the cooling water cooler 14 and the radiator 13 are connected to the same cooling circuit, the heat pump operation of the refrigeration cycle 22 can be performed. That is, in the first cooling water circuit, the cooling water cooled by the cooling water cooler 14 flows through the radiator 13, so that the cooling water absorbs heat from the outside air by the radiator 13. Then, the cooling water that has absorbed heat from the outside air by the radiator 13 exchanges heat with the refrigerant of the refrigeration cycle 22 by the cooling water cooler 14 to dissipate heat. Therefore, in the cooling water cooler 14, the refrigerant of the refrigeration cycle 22 absorbs heat from the outside air through the cooling water.
- the refrigerant that has absorbed heat from the outside air in the cooling water cooler 14 radiates heat by exchanging heat with the cooling water in the second cooling water circuit in the cooling water heater 15. Therefore, it is possible to realize a heat pump operation that pumps up the heat of the outside air.
- the control device 50 performs the control process shown in the flowchart of FIG. 4 when the compressor 23 is stopped. This control process is performed even when the ignition switch of the vehicle is turned off.
- step S100 it is determined whether or not the refrigerant pressure Pc in the refrigeration cycle 22 exceeds a predetermined value P1.
- the predetermined value P1 is stored in the control device 50 in advance.
- the predetermined value P1 is a value equal to or lower than the valve opening pressure of the relief valve 25.
- step S100 When it is determined that the refrigerant pressure Pc of the refrigeration cycle 22 does not exceed the predetermined value P1, the process returns to step S100, and when it is determined that the refrigerant pressure or temperature of the refrigeration cycle 22 exceeds the predetermined value, step Proceed to S110.
- step S110 the first pump 11 and the outdoor blower 21 are operated, and the first switching valve 19 and the second switching valve 20 are switched so as to be in the operation mode shown in FIG.
- the cooling water circulates in the radiator 13 and the cooling water cooler 14, the cooling water absorbs heat from the refrigerant in the cooling water cooler 14, and the cooling water dissipates heat to the outside air in the radiator 13. Therefore, the refrigerant of the refrigeration cycle 22 is cooled, and the refrigerant pressure Pc decreases.
- the radiator 13 may be radiated naturally from the cooling water to the outside air without operating the outdoor blower 21.
- step S120 it is determined whether or not the refrigerant pressure Pc in the refrigeration cycle 22 is equal to or less than a predetermined value P1. If it is determined that the refrigerant pressure Pc in the refrigeration cycle 22 is not equal to or less than the predetermined value P1, the process returns to step S120. On the other hand, when it determines with the refrigerant
- the components of the refrigeration cycle 22 can be protected, and the compressor 23 can be operated without hindrance.
- the first pump 11 and the outdoor blower 21 are stopped.
- the first pump 11 and the outdoor blower 21 may be stopped.
- steps S100 to S130 the operation / stop of the first pump 11 is switched according to the refrigerant pressure Pc of the refrigeration cycle 22, but the operation / stop of the first pump 11 is performed according to the refrigerant temperature Tc of the refrigeration cycle 22. May be switched. For example, when it is determined that the refrigerant temperature Tc of the refrigeration cycle 22 exceeds a predetermined value T1, the first pump 11 is operated, and it is determined that the refrigerant temperature Tc of the refrigeration cycle 22 is equal to or lower than the predetermined value T1. In this case, the first pump 11 may be stopped. In this case, the predetermined value T1 is lower than the refrigerant temperature corresponding to the valve opening pressure of the relief valve 25.
- the refrigerant pressure Pc or temperature Tc of the refrigeration cycle 22 exceeds the predetermined values P1 and T1.
- the first pump 11 may be stopped.
- step S110 the first switching valve 19 and the second switching valve 20 are switched to operate the first pump 11 so as to be in the operation mode shown in FIG. 1, but the first switching is performed so as to be in the operation mode shown in FIG.
- the second pump 12 may be operated by switching the valve 19 and the second switching valve 20.
- the cooling water circulates in the radiator 13 and the cooling water heater 15, the cooling water absorbs heat from the refrigerant in the cooling water heater 15, and the cooling water dissipates heat to the outside air in the radiator 13. Therefore, the refrigerant of the refrigeration cycle 22 is cooled, and the refrigerant pressure Pc decreases.
- the control device 50 when the compressor 23 is stopped, the control device 50 (pump control unit 50a) operates the first pump 11 to cause the cooling water to flow.
- the cooling water flowing by the first pump 11 functions as a cooling fluid for cooling the refrigerant.
- control device 50 (pump control unit 50a) estimates that the compressor 23 is stopped and the refrigerant pressure Pc or temperature Tc exceeds or exceeds predetermined values P1 and T1. If it is determined, at least one of the first pump 11 and the second pump 12 is operated.
- a first switching valve that switches between a state in which cooling water circulates between the radiator 13 and the cooling water heater 15 and a state in which cooling water circulates between the radiator 13 and the cooling water cooler 14. 19 and the second switching valve 20 are provided.
- the first switching valve 19 and the second switching valve 20 determine that the compressor 23 is stopped and the refrigerant pressure Pc or temperature Tc exceeds or is estimated to exceed the predetermined values P1 and T1. In this case, an operation pattern for switching to a state in which cooling water circulates between the radiator 13 and the cooling water cooler 14 is performed.
- control device 50 stops the pump when the refrigerant pressure Pc or the temperature Tc is equal to or lower than the predetermined values P1 and T1 after the pump is operated.
- the control device 50 may stop the pump when a predetermined time has elapsed after operating the pump.
- control device 50 estimates that the compressor 23 is stopped and the refrigerant pressure Pc or temperature Tc exceeds or exceeds the predetermined values P1 and T1. If it is determined, the outdoor blower 21 is operated.
- the coolant is cooled by circulating the cooling water, but in this embodiment, the coolant is cooled by introducing the outside air to the refrigeration cycle unit 40 as shown in FIG.
- the front / rear and up / down arrows in FIG. 6 indicate the front / rear and up / down directions of the vehicle.
- the refrigeration cycle unit 40 is disposed in the air guide duct 60.
- the air guide duct 60 is an air guide unit that guides outside air to the refrigeration cycle unit 40.
- the air duct 60 is an outside air passage forming member that forms an outside air passage through which outside air flows.
- the air guide duct 60 is disposed so as to extend in the vertical direction in the engine room 1.
- the opening surface of the opening 60 a on the lower end side of the air duct 60 is disposed in the lower part of the engine room 1.
- the opening surface of the opening 60a on the lower end side of the air guide duct 60 is disposed above the lowest part of the vehicle body. In other words, the vertical distance LH from the ground surface to the opening surface of the opening 60a on the lower end side of the air guide duct 60 is larger than the minimum ground clearance LG of the vehicle.
- the opening 60b on the upper end side of the air guide duct 60 opens in the cowl 4 of the vehicle.
- the cowl 4 is a member on which a vehicle wiper (not shown) is arranged, and is arranged between the vehicle hood 5 and a windshield (not shown).
- a cooling water pipe 40 a of the refrigeration cycle unit 40 passes through the air guide duct 60.
- Two open / close doors 61 are arranged in the air guide duct 60.
- the two opening / closing doors 61 are outside air passage opening / closing sections that open and close the outside air passage in the air guide duct 60.
- One open / close door 61 is disposed between the refrigeration cycle unit 40 and the opening 60 a on the lower end side of the air guide duct 60, and the other open / close door 61 is the upper end of the refrigeration cycle unit 40 and the air guide duct 60. It arrange
- the two open / close doors 61 are driven by the electric actuator 62.
- the electric actuator 62 is a drive unit that drives the two opening / closing doors 61.
- the operation of the electric actuator 62 is controlled by the control device 50.
- control device 50 controls the operation of the electric actuator 62 so that the two open / close doors 61 open the outside air passage in the air guide duct 60 as shown in FIG.
- the outside air in the outside air passage in the air guide duct 60 is heated by the refrigeration cycle unit 40 and natural convection is generated. Due to this natural convection, an outside air flow is generated in the outside air passage in the air guide duct 60 as shown by the arrows in FIG. 6, so that the outside air can be guided to the refrigeration cycle unit 40 to cool the refrigerant in the refrigeration cycle unit 40. .
- control device 50 controls the operation of the electric actuator 62 so that the two open / close doors 61 open the outside air passage in the air guide duct 60 as shown in FIG.
- the negative pressure is increased. Due to this negative pressure difference, an outside air flow is generated in the outside air passage in the air guide duct 60 as shown by the arrows in FIG. 7, so that the outside air is guided to the refrigeration cycle unit 40 and the refrigerant in the refrigeration cycle unit 40 is supplied. Can be cooled.
- control device 50 controls the operation of the electric actuator 62 so that the two opening / closing doors 61 close the outside air passage in the air guide duct 60 as shown in FIG.
- the air of the refrigeration cycle unit 40 is heated and heated by the waste heat of the compressor 23, the first pump 11, the second pump 12, and the like.
- the absorbed air is absorbed by the refrigerant flowing through the cooling water cooler 14. Therefore, waste heat from the compressor 23, the first pump 11, the second pump 12, and the like can be used for heating.
- the refrigerant can be cooled by flowing the outside air even when the compressor 23 is stopped, and the pressure of the refrigerant is excessive. It is possible to suppress the rise.
- the air guide duct 60 has at least two openings 60a and 60b, and the opening surfaces of the two openings 60a and 60b are arranged at different heights in the vehicle vertical direction. . According to this, since the outside air can be flowed using natural convection, the power for blowing the outside air can be made unnecessary or reduced.
- the two openings 60a and 60b of the air guide duct 60 have a pressure lower than that of the other opening 60b due to the traveling wind of the vehicle.
- the outside air can be flowed by utilizing the pressure drop caused by the traveling wind, the power for blowing the outside air can be made unnecessary or reduced.
- a blower 63 is arranged in the outside air passage in the air guide duct 60 with respect to the second embodiment.
- the blower 63 is an electric blower whose operation is controlled by the control device 50.
- control device 50 controls the operation of the electric actuator 62 so that the two open / close doors 61 open the outside air passage in the air guide duct 60 and also operates the blower 63, thereby Since an outside air flow is generated in the outside air passage, the outside air can be guided to the refrigeration cycle unit 40 to cool the refrigerant in the refrigeration cycle unit 40.
- the refrigerant in the refrigeration cycle unit 40 is cooled using the convection of the refrigerant.
- the refrigeration cycle 22 includes a second expansion valve 65 and a second evaporator 66.
- the second expansion valve 65 and the second evaporator 66 are arranged in parallel with the expansion valve 24 and the cooling water cooler 14 in the refrigerant flow of the refrigeration cycle 22.
- the second expansion valve 65 is a decompression unit that decompresses and expands the liquid-phase refrigerant that has flowed out of the cooling water heater 15.
- the second evaporator 66 is an air cooling heat exchanger that heat-exchanges the low-pressure refrigerant decompressed and expanded by the second expansion valve 65 and the air into the vehicle interior to cool the air into the vehicle interior.
- the second evaporator 66 is a refrigerant flow path forming member that forms a flow path through which the refrigerant flows.
- the second evaporator 66 is disposed in the casing 28 of the indoor air conditioning unit 27. Therefore, the second evaporator 66 is disposed in the vehicle compartment 2 partitioned by the firewall 6 with respect to the engine room 1.
- the interior of the vehicle compartment 2 in which the second evaporator 66 is arranged has a refrigeration cycle.
- the environment becomes a low temperature environment. Therefore, the refrigerant circulates between the refrigeration cycle unit 40 and the second evaporator 66 by natural convection. At this time, the refrigerant radiates heat to the passenger compartment air in the second evaporator 66. Therefore, the refrigerant in the refrigeration cycle unit 40 can be cooled.
- the 2nd evaporator 66 is arrange
- the refrigerant is radiated by the second evaporator 66.
- the refrigerant is radiated by the refrigerant pipe 67 constituting the refrigeration cycle 22, as shown in FIG.
- the refrigerant pipe 67 is a refrigerant flow path forming member that forms a flow path through which the refrigerant flows, and is branched from the refrigerant circulation flow path of the refrigeration cycle 22.
- the refrigerant circulation channel is a channel through which the refrigerant circulates through the compressor 23, the cooling water heater 15, the expansion valve 24, and the cooling water cooler 14.
- the refrigerant pipe 67 is branched from between the compressor 23 and the cooling water heater 15.
- the refrigerant pipe 67 may be branched from between the cooling water heater 15 and the expansion valve 24.
- the refrigerant pipe 67 may be branched from between the expansion valve 24 and the cooling water cooler 14.
- the refrigerant pipe 67 may be branched from between the cooling water cooler 14 and the compressor 23.
- the refrigerant pipe 67 extends to a low temperature region (for example, the lower portion of the engine room 1) where the air temperature is lower than the region where the refrigeration cycle unit 40 is disposed.
- the refrigerant goes back and forth through the refrigerant pipe 67 by natural convection, and the refrigerant radiates heat to the passenger compartment air through the refrigerant pipe 67. Therefore, the refrigerant in the refrigeration cycle unit 40 can be cooled.
- the refrigerant pipe 67 branched from the refrigerant circulation channel extends to the low temperature region, but the same effect can be obtained even if the refrigerant circulation channel itself extends to the low temperature region. Even if at least one of the compressor 23, the cooling water heater 15, the expansion valve 24, and the cooling water cooler 14 is disposed in the low temperature region, the same effect can be obtained. (Sixth embodiment) In the first embodiment, when it is determined that the compressor 23 is stopped and the refrigerant pressure Pc or temperature Tc exceeds or is estimated to exceed the predetermined values P1 and T1, the pump 11 and the outdoor The blower 21 is activated.
- the pump 12 and the outdoor blower 21 are used. In addition, the compressor 23 is also operated.
- control device 50 performs the control process shown in the flowchart of FIG. 12 when the compressor 23 is stopped. This control process is performed even when the ignition switch of the vehicle is turned off.
- steps S110 and S130 in the flowchart of FIG. 4 shown in the first embodiment are changed to steps S111 and S131.
- step S100 When it is determined in step S100 that the refrigerant pressure Pc or temperature Tc of the refrigeration cycle 22 exceeds the predetermined values P1 and T1, the process proceeds to step S111, and the first switching valve 19 is set to the operation mode shown in FIG. And while switching the 2nd switching valve 20, the compressor 23, the 2nd pump 12, and the outdoor air blower 21 are operated.
- a second cooling water circuit C2 having the radiator 13 and the cooling water heater 15 is formed.
- the cooling water circulates in the radiator 13 and the cooling water heater 15, so that the cooling water absorbs heat from the refrigerant in the cooling water heater 15, and the radiator 13 Cooling water dissipates heat to the outside air. Therefore, the refrigerant of the refrigeration cycle 22 is cooled, and the refrigerant pressure Pc decreases.
- step S120 If it is determined in step S120 that the refrigerant pressure Pc or temperature Tc of the refrigeration cycle 22 is equal to or less than the second predetermined value P2, T2, the process proceeds to step S131, and the compressor 23, the second pump 12, and the outdoor blower 21 are stopped.
- the second predetermined values P2 and T2 are stored in the control device 50 in advance.
- the second predetermined values P2 and T2 may be the same values as the predetermined values P1 and T1.
- control device 50 (specifically, the pump control unit 50a, the outdoor fan control unit 50b, and the compressor control unit 50c) has the compressor 23 stopped, and the refrigerant pressure Pc or temperature Tc is When it is determined that the predetermined values P1 and T1 are exceeded or estimated to exceed, the compressor 23, the pump 12, and the outdoor blower 21 are operated.
- control device 50 (specifically, the pump control unit 50a, the outdoor blower control unit 50b, and the compressor control unit 50c) operates the compressor 23, the pumps 11 and 12, and the outdoor blower 21, When the refrigerant pressure Pc or the temperature Tc becomes equal to or lower than the second predetermined values P2 and T2, the compressor 23, the pump 12, and the outdoor blower 21 are stopped.
- FIG. (Seventh embodiment) In the sixth embodiment, when it is determined that the compressor 23 is stopped and the refrigerant pressure Pc or the temperature Tc exceeds or is estimated to exceed the predetermined values P1, T1, the compressor 23, Although the 2nd pump 12 and the outdoor air blower 21 are operated, in this embodiment, it is estimated that the compressor 23 has stopped and the refrigerant
- the 1st pump 11 is also operated.
- the cooling water cooled by the cooling water cooler 14 circulates in the first cooling water circuit C 1 having the cooler core 17. Therefore, since the cold heat can be stored in the entire first cooling water circuit C1, the temperature rise of the refrigerant after stopping the compressor 23 can be further suppressed and the pressure increase of the refrigerant can be further suppressed as compared with the sixth embodiment. .
- the compressor 23 After the compressor 23, the first pump 11, the second pump 12, and the outdoor blower 21 are operated, when the refrigerant pressure Pc or the temperature Tc becomes equal to or lower than the second predetermined value P2, T2, the compression is performed.
- the machine 23, the 1st pump 11, the 2nd pump 12, and the outdoor air blower 21 are stopped.
- the first pump 11 and the first pump 11 when it is determined that the compressor 23 is stopped and the refrigerant pressure Pc or the temperature Tc exceeds or is estimated to exceed the predetermined values P1 and T1, the first pump 11 and the first pump 11 Although both of the two pumps 12 are operated, the first pump 11 may be operated and the second pump 12 may not be operated.
- control device 50 performs the control process shown in the flowchart of FIG. 15 when the compressor 23 is stopped. This control process is performed even when the ignition switch of the vehicle is turned off.
- step S120 in the flowchart of FIG. 12 shown in the sixth embodiment is changed to step S121.
- step S121 it is determined whether or not the temperature Tw of the cooling water circulated by the pump is equal to or lower than the cooling water temperature predetermined value T3 (heat medium temperature predetermined value).
- the cooling water temperature predetermined value T3 is stored in the control device 50 in advance.
- the process returns to step S120.
- the process proceeds to step S131, and the compressor 23, the second pump 12, and the outdoor blower 21 are stopped.
- the temperature Tw of the cooling water has a correlation with the temperature Tc and the pressure Pc of the refrigerant in the refrigeration cycle 22. Specifically, the higher the temperature Tw of the cooling water, the higher the temperature Tc and the pressure Pc of the refrigerant in the refrigeration cycle 22.
- the refrigerant temperature Tc of the refrigeration cycle 22 is equal to or lower than the second predetermined value T2.
- the refrigerant temperature Tc of the refrigeration cycle 22 is not equal to or lower than the second predetermined value T2.
- the refrigerant pressure Pc in the refrigeration cycle 22 is equal to or lower than the second predetermined value P2.
- the refrigerant pressure Pc in the refrigeration cycle 22 is not equal to or lower than the second predetermined value P2.
- control device 50 (pump control unit 50a, outdoor fan control unit 50b, compressor control unit 50c) operates the compressor 23, the pump 12, and the outdoor blower 21, and then the temperature Tw of the cooling water is When the cooling water temperature falls below the predetermined value T3, the compressor 23, the pump 12 and the blower 21 are stopped.
- step S111 of this embodiment you may make it operate the 1st pump 11 in addition to the compressor 23, the 2nd pump 12, and the outdoor air blower 21.
- step S131 the first pump 11 may be stopped in addition to the compressor 23, the second pump 12, and the outdoor blower 21.
- the compressor 23 when the compressor 23 has stopped, the pressure rise of a refrigerant
- coolant is suppressed by cooling the cooling water of a cooling water circuit.
- the compressor 23 when the compressor 23 is stopped, the refrigerant pressure rise is suppressed by dissipating the cooling water of the engine cooling circuit C3.
- the engine cooling circuit C3 is a cooling water circuit that circulates engine cooling water (cooling medium for the internal combustion engine) in the engine 70 (internal combustion engine), and includes an engine pump 71 and an engine radiator 72.
- the engine pump 71 is a pump that circulates engine coolant in the engine cooling circuit C3.
- the engine radiator 72 is a heat exchanger (heat exchanger for cooling an internal combustion engine) that cools the engine coolant by exchanging heat between the engine coolant and the outside air.
- the engine radiator 72 functions as a radiator that radiates heat of engine cooling water to the outside air. Outside air is blown to the engine radiator 72 by the outdoor blower 21.
- steps S110 and S130 in the flowchart of FIG. 4 shown in the first embodiment are changed to steps S112 and S132.
- step S100 When it is determined in step S100 that the refrigerant pressure Pc or temperature Tc of the refrigeration cycle 22 exceeds the predetermined values P1 and T1, the process proceeds to step S112, and the outdoor fan 21 is operated.
- the engine radiator 72 dissipates heat to the outside air and is cooled by the engine radiator 72, so that the temperature rise in the engine room due to the residual heat of the engine 70 is suppressed. Therefore, since the rise in the atmospheric temperature of the refrigeration cycle 22 is suppressed, the temperature rise of the refrigerant is suppressed and the pressure increase of the refrigerant is suppressed.
- step S120 When it is determined in step S120 that the refrigerant pressure Pc or temperature Tc of the refrigeration cycle 22 is equal to or less than the second predetermined value P2, T2, the process proceeds to step S132, and the outdoor blower 21 is stopped.
- the vehicle air conditioner of the present embodiment includes an engine radiator 72 that exchanges heat between engine coolant and air, and an outdoor fan 21 that blows air to the engine radiator 72.
- the control device 50 specifically, the outdoor fan control unit 50b
- the outdoor fan control unit 50b determines that the refrigerant pressure Pc or the temperature Tc exceeds or is estimated to exceed the predetermined values P1 and T1, the outdoor fan 21 is operated.
- the refrigeration cycle unit 40 may be provided with a member having a large heat capacity.
- the housing of the refrigeration cycle unit 40 is configured with a member having a large heat capacity. Thereby, it can suppress that the refrigerant
- the enclosure which restricts the heat exchange amount with outside air is arrange
- the refrigeration cycle unit 40 is disposed in the engine room 1, it may be disposed in a space in which a heat generator such as a motor (for example, an electric motor for traveling) or a fuel cell is disposed. In this case, even if the refrigeration cycle unit 40 is affected by the heat generated by the prime mover or the fuel cell, the refrigerant pressure in the refrigeration cycle unit 40 can be prevented from rising excessively.
- a heat generator such as a motor (for example, an electric motor for traveling) or a fuel cell
- cooling water is used as the heat medium flowing through the cooler core 17, but various media such as oil may be used as the heat medium.
- Nanofluid may be used as the heat medium.
- a nanofluid is a fluid in which nanoparticles having a particle size of the order of nanometers are mixed.
- antifreeze liquid ethylene glycol
- the effect of improving the thermal conductivity in a specific temperature range the effect of increasing the heat capacity of the heat medium, the effect of preventing the corrosion of metal pipes and the deterioration of rubber pipes, and the heat medium at an extremely low temperature
- liquidity of can be acquired.
- Such an effect varies depending on the particle configuration, particle shape, blending ratio, and additional substance of the nanoparticles.
- the thermal conductivity can be improved, it is possible to obtain the same cooling efficiency even with a small amount of heat medium as compared with the cooling water using ethylene glycol.
- the amount of heat stored in the heat medium itself can be increased.
- the aspect ratio of the nanoparticles is preferably 50 or more. This is because sufficient thermal conductivity can be obtained.
- the aspect ratio is a shape index that represents the ratio of the vertical and horizontal dimensions of the nanoparticles.
- Nanoparticles containing any of Au, Ag, Cu and C can be used. Specifically, Au nanoparticle, Ag nanowire, CNT (carbon nanotube), graphene, graphite core-shell nanoparticle (a structure such as a carbon nanotube surrounding the above atom is included as a constituent atom of the nanoparticle. Particles), Au nanoparticle-containing CNTs, and the like can be used.
- a chlorofluorocarbon refrigerant is used as the refrigerant.
- the type of the refrigerant is not limited to this, and natural refrigerant such as carbon dioxide, hydrocarbon refrigerant, or the like is used. May be.
- the refrigeration cycle 22 of the above embodiment constitutes a subcritical refrigeration cycle in which the high-pressure side refrigerant pressure does not exceed the critical pressure of the refrigerant, but the supercritical refrigeration cycle in which the high-pressure side refrigerant pressure exceeds the critical pressure of the refrigerant. You may comprise.
- the vehicle thermal management system 10 is applied to a hybrid vehicle.
- an electric vehicle that does not have an engine and obtains driving force for traveling from a traveling electric motor, or hydrogen and oxygen
- the vehicle thermal management system 10 may be applied to a fuel cell vehicle or the like that travels by obtaining electric power by the reaction of the above.
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Abstract
Description
(第1実施形態)
図1に示す車両用熱管理システム10は、車両が備える各種機器や車室内を適切な温度に調整するために用いられる。本実施形態では、車両用熱管理システム10を、エンジン(内燃機関)および走行用電動モータから車両走行用の駆動力を得るハイブリッド自動車に適用している。
冷却水冷却器14とラジエータ13とが互いに同じ冷却回路に接続された場合、冷凍サイクル22のヒートポンプ運転を行うことができる。すなわち、第1冷却水回路では、冷却水冷却器14で冷却された冷却水がラジエータ13を流れるので、ラジエータ13で冷却水が外気から吸熱する。そして、ラジエータ13にて外気から吸熱した冷却水は、冷却水冷却器14で冷凍サイクル22の冷媒と熱交換して放熱する。したがって、冷却水冷却器14では、冷凍サイクル22の冷媒が冷却水を介して外気から吸熱する。
(第2実施形態)
上記実施形態では、冷却水を循環させることによって冷媒を冷却するが、本実施形態では、図6に示すように、冷凍サイクルユニット40に外気を導風することによって冷媒を冷却する。図6における前後上下の矢印は、車両の前後上下方向を示している。
(第3実施形態)
本実施形態では、図9に示すように、上記第2実施形態に対して、導風ダクト60内の外気通路に送風機63が配置されている。送風機63は、制御装置50によって作動が制御される電動送風機である。
(第4実施形態)
本実施形態では、冷媒の対流を利用して、冷凍サイクルユニット40内の冷媒を冷却する。
(第5実施形態)
上記第4実施形態では、第2蒸発器66で冷媒を放熱させるが、本実施形態では、図11に示すように、冷凍サイクル22を構成する冷媒配管67によって冷媒を放熱させる。
(第6実施形態)
上記第1実施形態では、圧縮機23が停止しており、かつ冷媒の圧力Pcまたは温度Tcが所定値P1、T1を超えている、または超えると推定されると判定した場合、ポンプ11および室外送風機21を作動させる。本実施形態では、圧縮機23が停止しており、かつ冷媒の圧力Pcまたは温度Tcが所定値P1、T1を超えている、または超えると推定されると判定した場合、ポンプ12および室外送風機21に加えて圧縮機23も作動させる。
(第7実施形態)
上記第6実施形態では、圧縮機23が停止しており、かつ冷媒の圧力Pcまたは温度Tcが所定値P1、T1を超えている、または超えると推定されると判定した場合、圧縮機23、第2ポンプ12および室外送風機21を作動させるが、本実施形態では、圧縮機23が停止しており、かつ冷媒の圧力Pcまたは温度Tcが所定値P1、T1を超えている、または超えると推定されると判定した場合、図14に示すように圧縮機23、第2ポンプ12および室外送風機21に加えて第1ポンプ11も作動させる。
(第8実施形態)
上記第6実施形態では、冷凍サイクル22の冷媒の圧力Pcまたは温度Tcが第2所定値P2、T2以下であると判定された場合、圧縮機23、第2ポンプ12および室外送風機21を停止させる。本実施形態では、図15に示すように、冷却水の温度が冷却水温度所定値T3以下であると判定された場合、圧縮機23、第2ポンプ12および室外送風機21を停止させる。
(第9実施形態)
上記実施形態では、圧縮機23が停止している場合、冷却水回路の冷却水を冷却させることによって冷媒の圧力上昇を抑制する。本実施形態では、圧縮機23が停止している場合、エンジン冷却回路C3の冷却水を放熱させることによって冷媒の圧力上昇を抑制する。
(他の実施形態)
上記実施形態を適宜組み合わせ可能である。上記実施形態を例えば以下のように種々変形可能である。
Claims (19)
- 冷媒を吸入して吐出する圧縮機(23)と、
前記圧縮機(23)から吐出された冷媒と、空気とは異なる熱媒体とを熱交換させて前記熱媒体を加熱する熱媒体加熱用熱交換器(15)と、
前記圧縮機(23)が停止している場合、前記冷媒を冷却するための冷却流体を流動させる流動調整部(50a、60)とを備える車両用熱管理システム。 - 前記熱媒体加熱用熱交換器(15)で熱交換された前記冷媒を減圧膨張させる減圧部(24)と、
前記減圧部(24)で減圧膨張された前記冷媒と前記熱媒体とを熱交換させて前記熱媒体を冷却する熱媒体冷却用熱交換器(14)と、
前記熱媒体と空気とを熱交換させる熱媒体空気熱交換器(13、17、18)と、
前記熱媒体冷却用熱交換器(14)および前記熱媒体空気熱交換器(13、17、18)に前記熱媒体を循環させるポンプ(11、12)とをさらに備え、
前記冷却流体は前記熱媒体であり、
前記流動調整部は、前記圧縮機(23)が停止しており、かつ前記冷媒の圧力(Pc)または温度(Tc)が所定値(P1、T1)を超えている、または超えると推定されると判定した場合、前記ポンプ(11、12)を作動させるポンプ制御部(50a)である請求項1に記載の車両用熱管理システム。 - 前記熱媒体と空気とを熱交換させる熱媒体空気熱交換器(13、17、18)と、
前記熱媒体加熱用熱交換器(15)および前記熱媒体空気熱交換器(13、17、18)に前記熱媒体を循環させるポンプ(11、12)とをさらに備え、
前記冷却流体は前記熱媒体であり、
前記流動調整部は、前記圧縮機(23)が停止しており、かつ前記冷媒の圧力(Pc)または温度(Tc)が所定値(P1、T1)を超えている、または超えると推定されると判定した場合、前記ポンプ(11、12)を作動させるポンプ制御部(50a)である請求項1に記載の車両用熱管理システム。 - 前記熱媒体加熱用熱交換器(15)で熱交換された前記冷媒を減圧膨張させる減圧部(24)と、
前記減圧部(24)で減圧膨張された前記冷媒と前記熱媒体とを熱交換させて前記熱媒体を冷却する熱媒体冷却用熱交換器(14)と、
前記熱媒体と空気とを熱交換させる熱媒体空気熱交換器(13)と、
前記熱媒体空気熱交換器(13)に前記熱媒体を循環させるポンプ(11、12)と、
前記熱媒体空気熱交換器(13)と前記熱媒体加熱用熱交換器(15)との間で前記熱媒体が循環する状態と、前記熱媒体空気熱交換器(13)と前記熱媒体冷却用熱交換器(14)との間で前記熱媒体が循環する状態とを切り替える切替部(19、20)とをさらに備え、
前記冷却流体は前記熱媒体であり、
前記流動調整部は、前記圧縮機(23)が停止しており、かつ前記冷媒の圧力(Pc)または温度(Tc)が所定値(P1、T1)を超えている、または超えると推定されると判定した場合、前記ポンプ(11、12)を作動させるポンプ制御部(50a)である請求項1に記載の車両用熱管理システム。 - 前記切替部(19、20)は、前記圧縮機(23)が停止しており、かつ前記冷媒の圧力(Pc)または温度(Tc)が前記所定値(P1、T1)を超えている、または超えると推定されると判定した場合、前記熱媒体空気熱交換器(13、17、18)と前記熱媒体冷却用熱交換器(14)との間で前記熱媒体が循環する状態に切り替わる請求項4に記載の車両用熱管理システム。
- 前記ポンプ制御部(50a)は、前記ポンプ(11、12)を作動させた後、前記冷媒の圧力(Pc)または温度(Tc)が前記所定値(P1、T1)以下になった場合、前記ポンプ(11、12)を停止させる請求項2ないし5のいずれか1つに記載の車両用熱管理システム。
- 前記ポンプ制御部(50a)は、前記ポンプ(11、12)を作動させた後、所定時間が経過した場合、前記ポンプ(11、12)を停止させる請求項2ないし5のいずれか1つに記載の車両用熱管理システム。
- 前記熱媒体空気熱交換器(13、17、18)に空気を送風する送風機(21、26)、および
前記送風機(21、26)を作動させる送風制御部(50b、50d)をさらに備え、
前記送風制御部(50b、50d)は、前記圧縮機(23)が停止しており、かつ前記冷媒の圧力(Pc)または温度(Tc)が前記所定値(P1、T1)を超えている、または超えると推定されると判定した場合、前記送風手段(21、26)を作動させる請求項2ないし7のいずれか1つに記載の車両用熱管理システム。 - 冷媒を吸入して吐出する圧縮機(23)と、
前記圧縮機(23)から吐出された冷媒と、空気とは異なる熱媒体とを熱交換させて前記熱媒体を加熱する熱媒体加熱用熱交換器(15)と、
前記熱媒体加熱用熱交換器(15)で熱交換された前記冷媒を減圧膨張させる減圧部(24)と、
前記減圧部(24)で減圧膨張された前記冷媒と前記熱媒体とを熱交換させて前記熱媒体を冷却する熱媒体冷却用熱交換器(14)と、
前記熱媒体と空気とを熱交換させる熱媒体空気熱交換器(13、17、18)と、
前記熱媒体冷却用熱交換器(14)および前記熱媒体空気熱交換器(13、17、18)に前記熱媒体を循環させるポンプ(11、12)と、
前記熱媒体空気熱交換器(13)に前記空気を送風する送風機(21)と、
前記圧縮機(23)が停止しており、かつ前記冷媒の圧力(Pc)または温度(Tc)が所定値(P1、T1)を超えている、または超えると推定されると判定した場合、前記圧縮機(23)、前記ポンプ(11、12)および前記送風機(21)を作動させる制御部(50a、50b、50c)を備える車両用熱管理システム。 - 前記制御部(50a、50b、50c)は、前記圧縮機(23)、前記ポンプ(11、12)および前記送風機(21)を作動させた後、前記冷媒の圧力(Pc)または温度(Tc)が第2所定値(P2、T2)以下になった場合、前記圧縮機(23)、前記ポンプ(11、12)および前記送風機(21)を停止させる請求項9に記載の車両用熱管理システム。
- 前記制御部(50a、50b、50c)は、前記圧縮機(23)、前記ポンプ(11、12)および前記送風機(21)を作動させた後、前記熱媒体の温度(Tw)が熱媒体温度所定値(T3)以下になった場合、前記圧縮機(23)、前記ポンプ(11、12)および前記送風機(21)を停止させる請求項9に記載の車両用熱管理システム。
- 冷媒を吸入して吐出する圧縮機(23)と、
前記圧縮機(23)から吐出された冷媒と、空気とは異なる熱媒体とを熱交換させて前記熱媒体を加熱する熱媒体加熱用熱交換器(15)と、
前記熱媒体加熱用熱交換器(15)で熱交換された前記冷媒を減圧膨張させる減圧部(24)と、
前記減圧部(24)で減圧膨張された前記冷媒と前記熱媒体とを熱交換させて前記熱媒体を冷却する熱媒体冷却用熱交換器(14)と、
前記熱媒体と空気とを熱交換させる熱媒体空気熱交換器(13、17、18)と、
前記熱媒体冷却用熱交換器(14)および前記熱媒体空気熱交換器(13、17、18)に前記熱媒体を循環させるポンプ(11、12)と、
内燃機関(70)を冷却する内燃機関用冷却媒体と空気とを熱交換させる内燃機関冷却用熱交換器(72)と、
前記内燃機関冷却用熱交換器(72)に空気を送風する送風機(21)と、
前記内燃機関(70)および前記圧縮機(23)が停止しており、かつ前記冷媒の圧力(Pc)または温度(Tc)が所定値(P1、T1)を超えている、または超えると推定されると判定した場合、前記送風機(21)を作動させる送風機制御部(50b)とを備える車両用熱管理システム。 - 外気が流れる外気通路を形成する外気通路形成部材(60)をさらに備え、
前記外気通路には、前記冷媒が流れる部材(40)が配置され、
前記冷却流体は前記外気であり、
前記流動調整部は、前記外気通路形成部材(60)である請求項1に記載の車両用熱管理システム。 - 前記外気通路形成部材(60)は、少なくとも2つの開口部(60a、60b)を有しており、
前記2つの開口部(60a、60b)の開口面は、互いに異なる高さに配置されている請求項13に記載の車両用熱管理システム。 - 前記2つの開口部(60a、60b)は、車両が走行している場合、一方の開口部(60a)では車両の走行風によって他方の開口部(60b)よりも圧力が低くなるように構成されている請求項14に記載の車両用熱管理システム。
- 前記外気通路を開閉する開閉部(61)をさらに備える請求項13ないし15のいずれか1つに記載の車両用熱管理システム。
- 冷凍サイクル(22)を構成する複数の機器(14、15、23、24)で構成された冷凍サイクルユニット(40)と、
前記冷凍サイクルユニット(40)が配置される領域と比較して空気温度の低い低温領域に配置され、前記冷凍サイクル(22)の冷媒が流れる流路を形成する冷媒流路形成部材(66、67)とを備える車両用熱管理システム。 - 前記冷媒流路形成部材は、前記冷凍サイクルユニット(40)から前記低温領域に延びる冷媒配管(67)である請求項17に記載の車両用熱管理システム。
- 前記冷媒流路形成部材は、前記冷媒と車室内の空気とを熱交換させて前記車室内の空気を冷却する空気冷却用熱交換器(66)である請求項17に記載の車両用熱管理システム。
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Also Published As
Publication number | Publication date |
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DE112014002874T5 (de) | 2016-03-03 |
US20160129756A1 (en) | 2016-05-12 |
JP2015024806A (ja) | 2015-02-05 |
CN105324259B (zh) | 2017-05-24 |
CN105324259A (zh) | 2016-02-10 |
JP6052222B2 (ja) | 2016-12-27 |
US9994087B2 (en) | 2018-06-12 |
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