AIR CONDITIONER FOR VEHICLE

PROBLEM TO BE SOLVED: To obtain high heating performance while reducing cost by making a heat exchanger applicable in a cold region without changing an accommodation casing greatly. SOLUTION: An air conditioner 1 for a vehicle includes: a compressor 100 which compresses a refrigerant; a heat exchanger 11 connected to the refrigerant discharge side of the compressor 100; the other heat exchanger 10 connected to the refrigerant outlet side of the heat exchanger 11; a pressure-reducing valve device 101 connected to the refrigerant outlet side of the heat exchanger 10; a refrigerant heater 102 which is connected to the refrigerant outlet side of the pressure-reducing valve device 101 and the refrigerant inlet side of the compressor 100 to heat the refrigerant which flows out of the pressure-reducing valve device 101: and a casing 3 which accommodates the heat exchangers 10, 11. In the casing 3, an air flow passage R is formed. The heat exchangers 10, 11 are arranged in the air flow passage R. The heat exchanger 11 is positioned farther downstream of an air flow from the heat exchanger 10. A refrigerant higher in temperature than that of the heat exchanger 10 flows in the heat exchanger 11. COPYRIGHT: (C)2011,JPO&INPIT