WO2020021840A1 - Climatiseur de véhicule - Google Patents

Climatiseur de véhicule Download PDF

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Publication number
WO2020021840A1
WO2020021840A1 PCT/JP2019/020816 JP2019020816W WO2020021840A1 WO 2020021840 A1 WO2020021840 A1 WO 2020021840A1 JP 2019020816 W JP2019020816 W JP 2019020816W WO 2020021840 A1 WO2020021840 A1 WO 2020021840A1
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WO
WIPO (PCT)
Prior art keywords
hot water
air
heater
temperature
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2019/020816
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English (en)
Japanese (ja)
Inventor
辰朗 久戸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
Denso Corp
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 Denso Corp filed Critical Denso Corp
Priority to CN201980016468.0A priority Critical patent/CN111788081B/zh
Publication of WO2020021840A1 publication Critical patent/WO2020021840A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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 devices
    • 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 devices
    • B60H1/02—Heating, cooling or ventilating devices the heat being derived from the propulsion plant
    • B60H1/04—Heating, cooling or ventilating devices the heat being derived from the propulsion plant from cooling liquid of the plant
    • B60H1/08—Heating, cooling or ventilating devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
    • 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 devices
    • B60H1/22—Heating, cooling or ventilating devices the heat source being other than the propulsion plant

Definitions

  • the present disclosure relates to a vehicle air conditioner that can heat a space to be air-conditioned.
  • Patent Document 1 As a conventional vehicle air conditioner, for example, the one described in Patent Document 1 is known.
  • a heater core that uses engine cooling water (warm water) as a heat source and an indoor condenser that uses a heat pump cycle refrigerant as a heat source are provided in an air conditioning case.
  • the heater core temperature Tca ⁇ the target outlet temperature TAO + ⁇ T heating using the heater core (hot water heating) is performed, and when the heater core temperature Tca ⁇ the target outlet temperature TAO + ⁇ T, the heat pump is used from the hot water heater. It can be switched to heat pump heating.
  • An object of the present disclosure is to provide a vehicle air conditioner that enables a heating operation by effectively utilizing the heat of an engine.
  • a vehicle air conditioner includes a heater through which hot water flows in a hot water circuit that enables switching of a connection state with a vehicle engine, an auxiliary heat source that heats hot water, and hot water flowing through the heater. And a control unit that controls heating of the air-conditioning air by the heat of the air. When the temperature of the hot water flowing out of the vehicle engine is lower than the target temperature of the hot water flowing through the heater, the control unit determines that there is a heat radiation temperature difference from the hot water flowing through the heater to the air conditioning air.
  • the auxiliary heat source When the vehicle engine is connected to the hot water circuit, the auxiliary heat source is operated, and when there is an endothermic temperature difference in which the hot water flowing through the heater absorbs heat from the air conditioning air, the vehicle engine is disconnected from the hot water circuit, Activate the auxiliary heat source.
  • the air-conditioning air can be heated (heating operation) by effectively utilizing the heat of the hot water generated by the vehicle engine.
  • FIG. 4 is an explanatory diagram showing an operating state when an engine outflow temperature is higher than a target temperature. It is a flowchart which shows the control content when the engine outflow temperature is lower than the target temperature. It is explanatory drawing which shows the operation state when an engine outflow temperature is lower than a target temperature, and an engine outflow temperature is higher than a heater outflow temperature.
  • FIG. 9 is an explanatory diagram showing an operation state when the engine outflow temperature is lower than the target temperature and the heater outflow temperature is higher than the engine outflow temperature.
  • the first embodiment will be described with reference to FIGS.
  • the vehicle air conditioner 100 of the first embodiment is applied to, for example, a hybrid vehicle.
  • the hybrid vehicle includes an engine 10 serving as a running internal combustion engine that generates power by explosively burning liquid fuel such as gasoline or the like, and a driving assist motor generator (not shown) having a driving assist motor function and a generator function. ing.
  • the engine 10 corresponds to a vehicle engine.
  • the hybrid vehicle can run using at least one of the engine 10 and the motor generator as a drive source for running.
  • the engine 10 is provided with an engine hot water circuit 11.
  • the engine hot water circuit 11 corresponds to a hot water circuit.
  • the engine hot water circuit 11 is an annular flow path, and the engine 10 and a heater 114 arranged in an air conditioning unit 110 described later are connected in the middle of the flow path.
  • a water pump 12 is provided on the hot water inflow side of the engine 10, so that hot water circulates in the engine hot water circuit 11 (the engine 10 and the heater 114).
  • a water temperature sensor 13 for detecting a temperature TWE of hot water flowing out of the engine 10 (hereinafter, engine outflow temperature) TWE is provided.
  • the engine hot water circuit 11 is provided with a bypass flow path 14 that connects between the water pump 12 and the heater 114 and between the water temperature sensor 13 and the heater 114.
  • a water pump 14a is provided in the middle of the bypass passage 14, and a three-way valve 14b is provided at one end of the bypass passage 14 (on the hot water inflow side of the engine 10).
  • an electromagnetic valve 15 that opens and closes the flow path is provided between the water temperature sensor 13 and the bypass flow path 14 (connection portion).
  • the water pumps 12, 14a, the three-way valve 14b, and the solenoid valve 15 are controlled by a control unit 130 described later. Further, a water temperature signal (engine outflow temperature TWE) detected by the water temperature sensor 13 is output to a control unit 130 described later.
  • a water temperature signal engine outflow temperature TWE
  • the engine 10 is provided with a radiator circuit 16, and the hot water flowing out of the engine 10 by the water pump 12 flows through the radiator 16 a side by the switching of the flow path opened and closed by the thermostat 16 c.
  • a case in which the engine 10 circulates on the road 16b side is formed so that the engine 10 is appropriately cooled.
  • the vehicle air conditioner 100 includes an air conditioning unit 110, a heat pump cycle 120, a control unit 130, and the like.
  • the air conditioning unit 110 and the control unit 130 are arranged in the vehicle interior (such as inside the instrument panel), and the heat pump cycle 120 is mainly arranged in the engine room of the vehicle.
  • the evaporator 124 constituting the heat pump cycle 120 is incorporated in the air conditioning unit 110 in the vehicle.
  • the air conditioning unit 110 includes an air conditioning case 111, an inside / outside air switching unit 112, an evaporator 124, an air mix door 113, a heater 114, a PTC heater 115, and the like.
  • the air-conditioning case 111 forms a flow path through which the air-conditioning air flows.
  • the inside-outside air switching unit 112 is connected to the most upstream side of the air-conditioning air.
  • the case accommodates the door 113, the heater 114, the PTC heater 115, and the like.
  • Various air outlets (a face air outlet, a foot air outlet, a defroster air outlet, and the like) are provided at the most downstream side of the air-conditioning case 111, so that conditioned air is blown into the vehicle interior. I have.
  • the inside / outside air switching unit 112 includes a switching door 112a, a blower 112b, and the like.
  • the rotation of the switching door 112a selects outside air or inside air as air for air conditioning, and the selected air is sent to the air conditioning case by the blower 112b. It is a part to be introduced into 111.
  • the rotation of the switching door 112a and the operation of the blower 112b are controlled by the control unit 130.
  • the evaporator 124 is disposed so as to cross the entire flow path (ventilation path) immediately after the inside / outside air switching unit 112, so that all of the air-conditioning air blown out from the blower 112b passes therethrough.
  • the evaporator 124 serves as a cooling heat exchanger that dehumidifies and cools air-conditioning air by the heat absorbing action of the refrigerant flowing inside the evaporator 124 during the operation of the heat pump cycle 120 (at the time of cooling operation).
  • the position of the door body of the air mix door 113 is changed (rotated) by an actuator or the like, so that the degree of opening of the air mix door 113 with respect to the hot air side passage and the cold air side passage, which are the two paths in the air conditioning case 111, is adjusted.
  • it is a door for adjusting the temperature of the air conditioning air.
  • the operation of the air mix door 113 is controlled by the control unit 130.
  • the degree of opening of the warm air side passage by the air mix door 113 is the ratio of opening of the transverse opening of the warm air side passage, and can be adjusted in the range of 0% to 100%.
  • the degree of opening of the cool air side passage by the air mix door 113 is a ratio of opening of the transverse direction opening of the cool air side passage, and is 100% of the opening degree of the warm air side passage from 0% to 100%. It can be adjusted in the range of% to 0%.
  • the heater 114 is arranged in the air-conditioning case 111 in the hot air passage on the downstream side of the air mix door 113.
  • the hot water of the engine hot water circuit 11 flows through the inside of the heater 114, and the heater 114 serves as a heat exchanger for heating the air for air conditioning using the heat of the hot water. I have.
  • An inlet water temperature sensor 114 a that detects the temperature of the hot water flowing into the heater 114 (hereinafter, the heater inflow temperature TWHin) is provided on the hot water inflow side of the heater 114. Further, an outlet water temperature sensor 114b for detecting the temperature of the hot water flowing out of the heater 114 (hereinafter, heater outflow temperature TWHout) is provided on the hot water outflow side of the heater 114.
  • the outlet water temperature sensor 114b corresponds to a temperature sensor.
  • the water temperature signals (heater inflow temperature TWHin and heater outflow temperature TWHout) detected by the sensors 114a and 114b are output to the control unit 130.
  • the ⁇ PTC (positive temperature coefficient) heater 115 has at least a heat transfer portion thereof located only in the hot-air-side passage, and is further disposed downstream of the heater 114 than the heater 114.
  • the PTC heater 115 has a current-carrying heating element section, and serves as a heating means for supplementarily heating the air-conditioning air flowing through the hot air passage during the cooling operation or the heating operation. The operation of the PTC heater 115 is controlled by the control unit 130.
  • the heat pump cycle 120 functions as a heat cycle for performing a cooling operation and a heating operation by using a state change of a refrigerant (for example, R134a, CO2, or the like) flowing in the cycle, and a water-refrigerant heat exchanger 122 described later. Accordingly, a function of heating the hot water of the engine hot water circuit 11 is provided.
  • Heat pump cycle 120 corresponds to an auxiliary heat source.
  • the heat pump cycle 120 includes a circulation channel 120a, a branch channel 120b, an electric compressor 121, a water-refrigerant heat exchanger 122, an outdoor heat exchanger 123, an evaporator 124, an accumulator 125, various temperature sensors 126a to 126e, and a pressure sensor 127a.
  • the circulation passage 120a forms an annular passage through which the refrigerant flows.
  • the circulation passage 120a includes an electric compressor 121, a water-refrigerant heat exchanger 122, an outdoor heat exchanger 123, and an evaporator 124. , And the accumulator 125 are connected in order.
  • the branch passage 120b is a passage that branches from between the outdoor heat exchanger 123 and the evaporator 124 and is connected to the refrigerant inflow side of the accumulator 125.
  • the electric compressor 121 is a fluid machine driven by a built-in electric motor to compress and discharge the refrigerant to a high temperature and a high pressure.
  • the rotational speed of the electric compressor 121 is controlled by the control unit 130 so that the refrigerant discharge amount is variable.
  • the water-refrigerant heat exchanger 122 is a heat exchanger that is disposed downstream of the electric compressor 121 and heats the hot water of the engine hot water circuit 11 by the heat of the refrigerant discharged from the electric compressor 121. Inside the water-refrigerant heat exchanger 122, a refrigerant flow path and a hot water flow path are provided. The refrigerant flows through the refrigerant flow path, and the hot water flows through the hot water circuit. It is to be moved.
  • the hot water flow path of the water-refrigerant heat exchanger 122 is disposed between the downstream side of the bypass flow path 14 and the hot water inflow side of the heater 114 in the engine hot water circuit 11.
  • the outdoor heat exchanger 123 is a heat exchanger that is disposed downstream of the water-refrigerant heat exchanger 122, for example, in the front of the engine room, and exchanges heat between the outside air and the refrigerant.
  • the outdoor heat exchanger 123 receives forced air from an outdoor fan and functions as a condenser during a cooling operation described later and functions as an evaporator during a heating operation.
  • the evaporator 124 is disposed downstream of the outdoor heat exchanger 123, and as described above, when the heat pump cycle 120 is operated (cooling operation), the air-conditioning air is dehumidified by the heat absorbing action of the refrigerant flowing inside. It is a cooling heat exchanger that cools and cools.
  • the accumulator 125 is disposed downstream of the evaporator 124, temporarily stores excess refrigerant in the heat pump cycle 120, and separates and separates gas and liquid of the refrigerant flowing out of the evaporator 124 or the solenoid valve 129b. The gas-phase refrigerant is sucked into the electric compressor 121.
  • the temperature sensors 126a, 126b, 126c, 126d, and 126e are disposed at each part of the heat pump cycle 120 in FIG. 1 and serve as sensors for detecting the temperature of the refrigerant at each part.
  • the temperature signals detected by the temperature sensors 126a to 126e are output to the control unit 130.
  • the pressure sensor 127a is a sensor that detects the pressure of the refrigerant discharged from the electric compressor 121.
  • the pressure signal detected by the pressure sensor 127a is output to the control unit 130.
  • the electric expansion valve 128a is disposed between the water-refrigerant heat exchanger 122 and the outdoor heat exchanger 123, and serves as a valve for adjusting the opening degree of the circulation flow passage 120a. It is controlled by the unit 130. During the cooling operation, the electric expansion valve 128a is adjusted so that the opening degree is fully opened (equivalent to the circulation flow path 120a). During the heating operation, the electric expansion valve 128a is adjusted to a predetermined throttle opening degree so as to decompress and expand the refrigerant. It is designed to function as.
  • the electric expansion valve 128b is disposed between the outdoor heat exchanger 123 and the evaporator 124, and serves as a valve for adjusting the opening degree of the circulation flow passage 120a. It is controlled.
  • the electric expansion valve 128b is adjusted to a predetermined throttle opening during the cooling operation to function as an expansion valve for decompressing and expanding the refrigerant, and the opening is adjusted to the fully closed state during the heating operation. ing.
  • the check valve 129a is disposed between the outdoor heat exchanger 123 and the electric expansion valve 128b, and serves as a valve for regulating the flow direction of the refrigerant from the outdoor heat exchanger 123 to the evaporator 124.
  • the electromagnetic valve 129b is a valve that is disposed in the middle of the branch channel 120b and opens and closes the branch channel 120b. The opening and closing of this valve is controlled by the control unit 130.
  • the pressure adjusting valve 129c is disposed downstream of the evaporator 124 and serves as a valve for adjusting the pressure of the refrigerant downstream (outflow side) of the evaporator 124.
  • the operation related to the pressure adjustment is performed by the control unit 130. Is controlled by the
  • the control unit 130 is a control unit for controlling the air-conditioning operation in the passenger compartment (heating control of the air-conditioning air), and includes an input circuit, an output circuit, and a microcomputer.
  • the input circuit includes signals from various switches on an operation panel provided on the front of the vehicle interior, an inside air sensor for detecting inside air temperature, an outside air sensor for detecting outside air temperature, a solar radiation sensor for detecting the amount of solar radiation, various water temperature sensors 13, Input is made of sensor signals and the like from 114a and 114b, various temperature sensors 126a to 126e, a pressure sensor 127a, and the like.
  • the output circuit includes water pumps 12 and 14a, a three-way valve 14b, a solenoid valve 15, an inside / outside air switching unit 112, an air mix door 113, a PTC heater 115, an electric compressor 121, electric expansion valves 128a and 128b, and a solenoid valve.
  • An output signal is sent to the 129b, the pressure regulating valve 129c, and the like.
  • the microcomputer includes a memory such as a ROM (read-only storage device) and a RAM (read-write storage device), a CPU (central processing unit), and the like, and operates based on operation commands transmitted from an operation panel or the like. It has various programs used for calculations.
  • the configuration of the vehicle air conditioner 100 is as described above. Next, the operation of the vehicle air conditioner 100 based on the above configuration will be described.
  • the control unit 130 closes the solenoid valve 129b, fully opens the electric expansion valve 128a, and adjusts the electric expansion valve 128b to a predetermined throttle opening.
  • the electric compressor 121 is operated, and the refrigerant flows from the electric compressor 121 to the water-refrigerant heat exchanger 122 to the electric expansion valve 128a (without throttling) to the outdoor heat exchanger 123 to the check valve 129a to electricity. It circulates in the order of the expansion valve 128b (with a throttle) ⁇ the evaporator 124 ⁇ the pressure regulating valve 129c ⁇ the accumulator 125 ⁇ the electric compressor 121.
  • the control unit 130 switches the three-way valve 14 b to be connected to the bypass flow path side and closes the solenoid valve 15, so that the engine 10 is disconnected from the engine hot water circuit 11.
  • the connection state (disconnection state) is established.
  • an engine disconnected state in which the hot water circulates between the bypass passage 14 and the heater 114 is formed.
  • the exhaust heat of the engine 10 is not transmitted to the hot water of the engine hot water circuit 11.
  • the water-refrigerant heat exchanger 122 the heat of the refrigerant is transferred to the hot water.
  • the air mix door 113 is controlled such that the opening on the side of the warm air passage where the heater 114 is disposed is 0% (broken line in FIG. 1), and the air from the heater 114 to the air for air conditioning is controlled. Heat is prevented.
  • the heat is radiated by the heater 114 using the heat of the hot water. (Heating) is sufficiently possible, and the engine hot water circuit 11 is switched so that the engine 10 is connected.
  • the control unit 130 switches the three-way valve 14b to be connected to the engine 10 side, and opens the solenoid valve 15, thereby connecting the engine 10 to the engine hot water circuit 11. It will be in the state that was done. Then, when the water pump 12 is operated, the hot water circulates between the engine 10 and the heater 114. The heat pump cycle 120 is stopped because it is not necessary to heat the hot water by the heat of the refrigerant in the heat pump cycle 120.
  • the air mix door 113 is controlled such that the opening on the side of the warm air passage where the heater 114 is disposed is on the 100% side (solid line in FIG. 2). Then, the heat of the hot water is released from the heater 114 to the air for air conditioning, so that the air for air conditioning is heated and the heating operation is performed.
  • step S100 it is determined whether or not (engine outflow temperature TWE-heater outflow temperature TWHout)> 0. If an affirmative determination is made in step S100, even if the engine outflow temperature TWE is lower than the target temperature TWO, the heater 114 determines a temperature difference at which heat can be radiated to the air-conditioning air between the inflow side and the outflow side ( It can be considered that there is room for heating the air-conditioning air due to this temperature difference.
  • control unit 130 proceeds to step S110, and changes the connection state of the engine 10 in the engine hot water circuit 11 to the “engine connection state” described in 2-1 above, as shown in FIG.
  • the heat pump cycle 120 is operated under the set conditions of the solenoid valve 129b and the electric expansion valves 128a and 128b described in -1.
  • the hot water flowing out of the engine 10 is heated by the water-refrigerant heat exchanger 122, and the heat of the hot water is released from the heater 114 to the air-conditioning air. Is executed.
  • the exhaust heat of the engine 10 is added to the hot water, and the exhaust heat of the engine 10 is effectively used for heating.
  • control unit 130 proceeds to step S120, and as shown in FIG. 5, sets the setting conditions of the heat pump cycle 120 to continue the operation in the same manner as in the case of (engine outflow temperature TWE-heater outflow temperature TWHout)> 0. Then, the connection state of the engine 10 in the engine hot water circuit 11 is switched to the “engine non-connection state” described in 1 above.
  • the hot water in the engine hot water circuit 11 circulates without flowing through the engine 10, is heated by the water-refrigerant heat exchanger 122, and the heat of the hot water is released from the heater 114 to the air-conditioning air.
  • the heating air is heated, and the heating operation is performed.
  • the heat of the hot water heated by the water-refrigerant heat exchanger 122 is used because the influence of the engine 10 is removed.
  • the heater 114 is turned off.
  • the engine 10 is connected to the engine hot water circuit 11 and the heat pump cycle 120 is operated. . Therefore, the heating of the air-conditioning air (heating operation) can be performed by effectively utilizing the heat of the hot water by the engine 10.
  • the outlet water temperature sensor 114b is used to detect the heater outlet temperature TWHout, but in the present embodiment, the heater inlet temperature TWHin by the inlet water temperature sensor 114a and the water-side heat amount in the heater 114 ( The heater outflow temperature TWHout is estimated from Qw) and the air side heat quantity (Qa), and the outlet water temperature sensor 114b is not required.
  • the concept (estimation formula) of estimating the heater outlet temperature TWHout will be described.
  • Vw is a flow rate of hot water
  • ⁇ w is a water density
  • ⁇ w is a specific heat of water.
  • the heater intake air temperature ⁇ T can be estimated from the temperature detected by the temperature sensor 126d.
  • Va can be estimated from the air volume characteristics of the blower 112b.
  • ⁇ , ⁇ a, ⁇ a, and A can be set as constants or can be estimated from a characteristic table for temperature or the like.
  • Vw can be estimated from the flow characteristics of the water pumps 12, 14a.
  • ⁇ w and ⁇ w can be set as constants or can be estimated from a temperature characteristic table or the like.
  • the heater outlet temperature TWHout can be estimated without using the outlet water temperature sensor 114b.
  • the heat pump cycle 120 is used as an auxiliary heat source for heating hot water.
  • the present invention is not limited to this.
  • an electric heater or the like may be used.
  • the heat radiation temperature difference and the heat absorption temperature difference are determined from the difference between the engine outflow temperature TWE and the heater outflow temperature TWHout. However, the difference between the hot water temperature in the heater 114 and the temperature of the air conditioning air is determined. The determination may be made.
  • the operation pattern of the heat pump cycle 120 during the heating operation may be, for example, an operation pattern during the cooling operation in order to have a dehumidifying effect.
  • vehicle air conditioner 100 has been described as being mounted on a hybrid vehicle, but is not limited to this.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

Selon l'invention, un climatiseur de véhicule comprend : un chauffage (114) à travers lequel de l'eau chaude d'un circuit d'eau chaude (11) est distribuée, l'état de connexion du circuit d'eau chaude (11) à un moteur de véhicule (10) étant commutable ; une source de chaleur auxiliaire (120) qui chauffe l'eau chaude ; et une unité de commande (130) qui effectue une commande de chauffage de l'air de climatisation en utilisant la chaleur de l'eau chaude qui est distribuée au travers du chauffage. Dans le cas où la température (TWE) d'eau chaude refoulée du moteur de véhicule est inférieure à une température cible (TWO) de l'eau chaude distribuée au travers du chauffage, lorsqu'une différence de température de rayonnement de chaleur est suffisamment grande pour rayonner de la chaleur à partir de l'eau chaude qui est distribuée au travers du chauffage à l'air de climatisation, l'unité de commande fait passer le moteur de véhicule dans un état connecté avec le circuit d'eau chaude, et active la source de chaleur auxiliaire et, lorsqu'une différence de température d'absorption de chaleur est suffisamment grande pour que l'eau chaude distribuée absorbe la chaleur provenant de l'air de climatisation, l'unité de commande fait passer le moteur de véhicule dans un état non connecté avec le circuit d'eau chaude, et active la source de chaleur auxiliaire.
PCT/JP2019/020816 2018-07-24 2019-05-27 Climatiseur de véhicule Ceased WO2020021840A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201980016468.0A CN111788081B (zh) 2018-07-24 2019-05-27 车辆用空调装置

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JP2018-138619 2018-07-24
JP2018138619A JP7119698B2 (ja) 2018-07-24 2018-07-24 車両用空調装置

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US20220333843A1 (en) * 2021-04-16 2022-10-20 Guangdong Giwee Technology Co. Ltd. Three-pipe multi-split air conditioning system and control method thereof

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CN114670595B (zh) * 2020-12-24 2024-02-23 长城汽车股份有限公司 车辆暖风控制方法、装置、暖风系统以及车辆

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