A heat pump cycle is capable of switching an operation mode to a cooling operation mode, a heating operation mode and a dehumidifying-heating operation mode, and is applicable to an air conditioning device (1). The heat pump cycle is configured to set both...

An air conditioner for a vehicle (10) is provided with: a compressor (21) that compresses a heat exchange medium; an external heat exchanger (24) that receives the heat exchange medium and that exchanges heat with the outside of a vehicle compartment; and ...

Provided is a highly reliable heat-pump vehicular air conditioner that can be easily installed at low cost and that permits sharing of circuit components having the same pressure conditions as those of the original cooling cycle. The original refrigeration...

Disclosed therein are a heat pump system for a vehicle and a method of controlling the heat pump system, which variably controls only a compressor 100 if the number of revolutions of the compressor is less than the upper limit of the number of the maximum ...

An air conditioning system (10) for a vehicle is provided with a heat pump circulation path (18) through which a refrigerant body is circulated through a compressor (16). The heat pump circulation path (18) is provided with a condenser unit (20) which exch...

The heat pump system for a vehicle includes a water-cooled type heat exchanger (180), which is a heat supply means, mounted on a first bypass line (R1) bypassing a second indoor heat exchanger (evaporator (160)) to collect waste heat of vehicle electric de...

The method involves determining air flow on an internal heat exchanger (11) or a water-air exchanging radiator. A total heating capacity is calculated from temperature set point, temperature of the air flow and the air flow on the exchanger. A heating capa...

An air-conditioner includes a compressor. The air-conditioner includes a first condenser positioned outside of a vehicle-compartment. The air-conditioner includes an expansion valve. The air-conditioner includes an evaporator positioned within an air-passa...