HEAT PUMP SYSTEM FOR VEHICLE

摘要

The present invention relates to a heat pump system for a vehicle, and more particularly, a heat pump system for a vehicle which is equipped with a dehumidification line to supply low temperature refrigerant to an evaporator by bypassing an expansion valve to dehumidify the inside of the vehicle in a heat pump mode. A bypass flow path is formed to connect the dehumidification line with the expansion valve so that the low temperature refrigerant flowing in the dehumidification line bypasses an expansion flow path of the expansion valve to supply the low temperature refrigerant to the evaporator, thereby having the dehumidification line while directly connecting the expansion valve to a flange of the evaporator without having a connection block which is conventionally connected to the flange of the evaporator, reducing the number of components and weight of the heat pump system since additional structure is not needed to fix the expansion valve, and enhancing productivity as the dehumidification line is directly connected to the expansion valve without having any additional connection structure or welding.