The invention provides a vehicle vapor-injection heat pump system with a controllable evaporator valve. A vehicle includes a vapor-injection heat pump having a refrigerant loop with an evaporator configured to cool cabin air, the evaporator coupled to an electronically controllable pressure regulating valve having a fully-open position with near-zero pressure drop, and a cabin conditioning coolantloop having a heater core configured to selectively heat the cabin air. A controller is configured to control the valve to maintain temperature and pressure of the refrigerant loop above a freezing threshold to inhibit or prevent evaporator icing. The valve may be controlled to throttle flow during a parallel dehumidification mode and to fully open to minimize pressure drop during other operational modes, such as a cooling mode, heating mode, de-icing mode, and series dehumidification mode.

    本公开提供了“带可控蒸发器阀的车辆蒸汽注入热泵系统”。一种包括蒸汽注入热泵的车辆,所述蒸汽注入热泵具有:制冷剂环路,其具有被配置为冷却舱室空气的蒸发器,所述蒸发器联接到具有近零压降的全开位置的可电控压力调节阀;和舱室调节冷却剂环路,其具有被配置为选择性地加热所述舱室空气的加热器芯体。控制器被配置为控制所述阀将所述制冷剂环路的温度和压力维持在冻结阈值以上,以抑制或防止蒸发器结冰。可以控制所述阀在并联除湿模式期间节流,并在其他操作模式(诸如冷却模式、加热模式、除冰模式和串联除湿模式)期间全开以使压降最小化。


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    Title :

    Vehicle vapor-injection heat pump system with controllable evaporator valve


    Additional title:

    带可控蒸发器阀的车辆蒸汽注入热泵系统


    Contributors:

    Publication date :

    2020-09-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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