| 摘要 |
PROBLEM TO BE SOLVED: To provide a dehumidification heat pump type heating and cooling device for an automobile to perform dehumidification heating through system constitution of eliminating a need for a refrigerant recovery line, reducing the number of part, items and being simplified. SOLUTION: A compressor 7, a subcondenser 4 arranged in a car interior, a first solenoid valve 20 with an orifice, a main condenser 5 arranged outside a car room, a liquid tank 10, a hot water refrigerant heat-exchanger 21 to heat a refrigerant by utilizing hot water, an expansion valve 11, and an evaporator 3 arranged in the car interior are intercoupled, in the order, through a refrigerant piping 8, and the outlet of the hot water refrigerant heat-exchanger 21 and the inlet of a compressor 7 are interconnected through a bypass pipe 22. A second solenoid valve 23 is arranged in a bypass pipe 22, a refrigerant flowing out from the hot water refrigerant heat-exchanger 21 is guided mainly to the evaporator 3 side during cooling operation, and guided mainly to the bypass pipe 22 side during heating operation.
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