To enable hot gas heating operation to smoothly transfer to heat absorbing/heating operation, by removing frost formed on an external heat exchange part while executing hot gas heating.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 selectively execute hot gas heating operation by which a refrigerant is prevented from absorbing heat in an external heat exchange part and heat of a portion of a refrigerant compressed by a 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 removes frost formed on the external heat exchange part, by flowing the refrigerant flowing through the indoor heat exchange part to the external heat exchange part, while executing the hot gas heating operation.SELECTED DRAWING: Figure 5

    【課題】ホットガス暖房を実行しながら外部熱交換部の除霜を行うことで、ホットガス暖房運転から吸熱暖房運転への移行を円滑に行えるようにする。【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、外部熱交換部において冷媒に吸熱させる吸熱暖房運転とを選択的に実行可能であり、ホットガス暖房運転の実行中に、室内熱交換部を流れた冷媒を外部熱交換部に流すことにより外部熱交換部の除霜を行う。【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:    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 / F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS



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