The present disclosure provides a heat pump secondary coolant loop heat exchanger defrost system for a motor vehicle. A cooling and heating system for a motor vehicle comprises a heat pump, a controller, a low temperature radiator in thermal communication with the heat pump, a passenger cabin heat exchanger in thermal communication with the heat pump, and a defrost system comprising a bypass coolant loop in selective fluid communication with the low temperature radiator. When in the heating mode, the controller opens a solenoid valve and activates a coolant heater in the bypass coolant loop upon detecting operation of the heat pump outside of a predetermined normal operating range and upon detecting an ambient temperature below a predetermined temperature. The controller de-activates the coolant heater upon detecting operation of the heat pump within the predetermined normal operating range. The controller may also de-activate close the solenoid upon detecting operation of the heat pump within the predetermined normal operating range.

    本公开提供了“用于机动车辆的热泵辅助冷却剂回路热交换器除霜系统”。一种用于机动车辆的冷却和加热系统,包括:热泵;控制器;低温散热器,所述低温散热器与所述热泵热连通;乘客舱热交换器,所述乘客舱热交换器与所述热泵热连通;以及除霜系统,所述除霜系统包括与所述低温散热器选择性流体连通的旁路冷却剂回路。当处于加热模式时,所述控制器在检测到热泵的操作处于预定正常操作范围之外时并且在检测到环境温度低于预定温度时打开电磁阀并且启用旁路冷却剂回路中的冷却剂加热器。所述控制器在检测到热泵的操作处于预定正常操作范围内时停用冷却剂加热器。所述控制器也可在检测到热泵的操作处于预定正常操作范围内时停用并关闭电磁阀。


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    Title :

    HEAT PUMP SECONDARY COOLANT LOOP HEAT EXCHANGER DEFROST SYSTEM FOR MOTOR VEHICLE


    Additional title:

    用于机动车辆的热泵辅助冷却剂回路热交换器除霜系统


    Contributors:

    Publication date :

    2020-08-18


    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



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