In accordance with the present invention, disclosed is a heat pump system for a vehicle, capable of improving dehumidification performance by increasing the flow of a refrigerant toward an evaporator in heating and dehumidification modes. The heat pump system for a vehicle includes: a bypass line branched between a first expansion valve and an outdoor heat exchanger to bypass the outdoor heat exchanger and an excavator; a first refrigerant flow control valve controlling the degree of opening between the bypass line and a refrigerant line heading toward the outdoor heat exchanger; a dehumidification line branched between the first expansion valve and the first refrigerant flow control valve to supply the refrigerant to the evaporator; and a control unit controlling the amount of refrigerants to be supplied to the dehumidification line in accordance with the temperature of outside air or RPM of a compressor.

    본 발명에서는 난방 및 제습 모드 시 증발기측으로의 냉매유량을 증가시켜 제습 성능을 향상시킬 수 있는 차량용 히트펌프 시스템이 개시된다. 차량용 히트펌프 시스템은 제1 팽창밸브와 실외열교환기 사이에서 분기되어 실외열교환기 및 증발기를 바이패스하는 바이패스라인; 바이패스라인과 실외열교환기를 향하는 냉매라인 사이의 개도를 조절하는 제1 냉매유량제어밸브; 제1 팽창밸브와 제1 냉매유량제어밸브 사이에서 분기되어 증발기로 냉매를 공급하는 제습라인; 및 외기온 또는 압축기 RPM에 따라서 제습라인으로 공급되는 냉매량을 제어하는 제어부를 구비한다.


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    Title :

    HEAT PUMP SYSTEM FOR VEHICLE AND METHOD FOR CONTROLLING THE SAME


    Additional title:

    차량용 히트펌프 시스템 및 이의 제어방법


    Contributors:
    KIM HAK KYU (author) / KANG BOK SUN (author) / KIM TAE WAN (author) / LEE JAE MIN (author)

    Publication date :

    2022-11-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    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



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