Disclosed are a heat pump system for a vehicle and a method for controlling same, which can, during mode changing between a heat pump mode and an air-conditioning mode, prevent noise and vibration due to a pressure difference between refrigerants and effectively reduce delay time. The heat pump system for a vehicle comprises: a compressor for compressing and discharging refrigerant; an indoor heat exchanger provided in an air conditioning case and causing the refrigerant having been discharged from the compressor to exchange heat with air, so as to discharge the heat; a first expansion valve for selectively expanding the refrigerant having passed through the indoor heat exchanger; an evaporator provided in the air conditioning case and enabling refrigerant to exchange heat with air to thus cause the refrigerant to evaporate; and a controller for controlling the opening degree of the first expansion valve during mode changing between a heat pump mode and an air-conditioning mode, wherein the controller turns off the compressor and gradually opens the first expansion valve to increase the opening degree when the mode is changed from the heat pump mode to the air-conditioning mode.

    L'invention concerne un système de pompe à chaleur pour un véhicule et un procédé de commande de ce dernier, qui peut, pendant un changement de mode entre un mode de pompe à chaleur et un mode de climatisation, empêcher le bruit et les vibrations dus à une différence de pression entre des réfrigérants et réduire efficacement un temps de retard. Le système de pompe à chaleur pour un véhicule comprend : un compresseur destiné à comprimer et à évacuer un réfrigérant ; un échangeur de chaleur intérieur disposé dans un boîtier de climatisation et amenant le réfrigérant ayant été évacué du compresseur à échanger de la chaleur avec de l'air, de manière à évacuer la chaleur ; une première soupape de détente destinée à dilater sélectivement le réfrigérant qui a traversé l'échangeur de chaleur intérieur ; un évaporateur disposé dans le boîtier de climatisation et permettant à un réfrigérant d'échanger de la chaleur avec de l'air pour amener ainsi le réfrigérant à s'évaporer ; et un dispositif de commande destiné à commander le degré d'ouverture de la première soupape d'expansion pendant le changement de mode entre un mode de pompe à chaleur et un mode de climatisation, le dispositif de commande éteint le compresseur et ouvre progressivement la première soupape d'expansion pour augmenter le degré d'ouverture lorsque le mode est passé du mode de pompe à chaleur au mode de climatisation.

    히트펌프 모드와 에어컨 모드 상호간의 모드 변경시 냉매 차압에 의한 소음 및 진동을 방지하면서도 딜레이 시간을 효과적으로 줄일 수 있는 차량용 히트펌프 시스템 및 이의 제어방이 개시된다. 차량용 히트펌프 시스템은 냉매를 압축하여 토출하는 압축기와, 공조케이스 내에 구비되고 압축기에서 토출된 냉매를 공기와 열교환시켜 방열시키는 실내열교환기와, 상기 실내열교환기를 통과한 냉매를 선택적으로 팽창시키는 제1 팽창밸브와, 공조케이스 내에 구비되어 냉매를 공기와 열교환시켜 증발시키는 증발기를 포함하며, 히트펌프 모드와 에어컨 모드 상호간의 모드 변경시 상기 제1 팽창밸브의 개도를 조절하는 제어부를 구비하고, 상기 제어부는 히트펌프 모드에서 에어컨 모드로 변경시 압축기를 오프하고 제1 팽창밸브의 개도량을 점진적으로 개방한다.


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    Title :

    HEAT PUMP SYSTEM FOR VEHICLE AND METHOD FOR CONTROLLING SAME


    Additional title:

    SYSTÈME DE POMPE À CHALEUR POUR VÉHICULE ET PROCÉDÉ DE COMMANDE DE CE DERNIER
    차량용 히트펌프 시스템 및 이의 제어방법


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

    Publication date :

    2022-10-20


    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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