To provide a vehicular air conditioner equipped with a refrigerant circuit that can switch between heat absorbing/heating operation and hot gas heating operation, which can suppress a refrigerant from staying in an external heat exchange part to sufficiently secure a heating capability, by setting an intermediate operation mode.SOLUTION: A vehicular air conditioner is provided with a control device that controls a refrigerant circuit and an air conditioning unit, where the refrigerant circuit has a hot gas bypass. The control device can execute hot gas heating operation by which the refrigerant is prevented from absorbing heat in the external heat exchange part and heat of a portion of a refrigerant compressed by the compressor is radiated in an indoor heat exchange part to heat a vehicle interior and heat-absorbing/heating operation by which the refrigerant is allowed to absorb heat in the external heat exchange part, which makes the refrigerant pass to the external heat exchange part, while suppressing the external heat exchange part from exchanging heat, during the hot gas heating operation.SELECTED DRAWING: Figure 5

    【課題】吸熱暖房運転とホットガス暖房運転を切り替える冷媒回路を備えた車両用空調装置において、中間的な運転モードを設けることで、冷媒が外部熱交換部に滞留するのを抑止し、十分に暖房能力を確保する。【解決手段】車両用空調装置は、冷媒回路及び空調ユニットを制御する制御装置を備え、冷媒回路は、ホットガスバイパスを有し、制御装置は、外部熱交換部において冷媒に吸熱させず、圧縮機で圧縮した冷媒の一部を室内熱交換部で放熱させて車室内を暖房するホットガス暖房運転と、外部熱交換部にて冷媒に吸熱させる吸熱暖房運転とを実行可能であり、ホットガス暖房運転中に、外部熱交換部での熱交換を抑止した状態で、外部熱交換部に冷媒を通過させる。【選択図】図5


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    Title :

    VEHICULAR AIR CONDITIONER


    Additional title:

    車両用空調装置


    Contributors:

    Publication date :

    2024-05-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS / 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



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