To provide a vehicular cooling system with desired characteristics.SOLUTION: A vehicular cooling system 1 includes: a common flow passage 10 in which a refrigerant flows; an air conditioning flow passage 20 having an air conditioning on-off valve 21 and an air conditioning heat exchanger 23; and a cooling flow passage 30 having a cooling on-off valve 31 and a cooling heat exchanger 33. The vehicular cooling system further includes a control section 50 for closing the air conditioning on-off valve and opening the cooling on-off valve when a cooling request for cooling by using the cooling heat exchanger is made and an ambient temperature that is a temperature on a wind flow upstream side of the air conditioning heat exchanger is lower than a lower limit temperature. That is, in the air conditioning heat exchanger, when sufficient heat for evaporation of the refrigerant cannot be obtained, the refrigerant is not caused to flow in the air conditioning flow passage and the refrigerant is caused to flow in the cooling flow passage. This configuration can reduce malfunction such as liquid back to a compressor 11 and thus stably maintain cooling operation by using the cooling flow passage.SELECTED DRAWING: Figure 1

    【課題】望ましい特性をもつ車両用冷却システムを提供する。【解決手段】車両用冷却システム1は、冷媒が流れる共通流路10と、空調用開閉弁21と空調用熱交換器23とを有する空調用流路20と、冷却用開閉弁31と冷却用熱交換器33を有する冷却用流路30とを備えている。車両用冷却システムは、冷却用熱交換器を用いて冷却する冷却要求がある場合であって、空調用熱交換器よりも風の流れの上流の温度である周囲温度が下限温度よりも低い場合に、空調用開閉弁を閉状態とし、冷却用開閉弁を開状態とする制御部50を備えている。すなわち、空調用熱交換器において、冷媒が蒸発するのに十分な熱が得られない場合には、空調用流路に冷媒を流さず冷却用流路に冷媒を流す。このため、圧縮機11に対する液バックなどの動作不良を低減して、冷却用流路を用いた冷却運転を安定して維持することができる。【選択図】図1


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    Title :

    VEHICULAR COOLING SYSTEM


    Additional title:

    車両用冷却システム


    Contributors:
    OKADA KEI (author)

    Publication date :

    2019-07-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



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