| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner performing defrosting operation while continuing heating operation. SOLUTION: This air conditioner is provided with a heat pump type freezing cycle, in which a compressor 1, a four-way valve 2, an indoor heat exchanger 3, a decompressor 4, and an outdoor heat exchanger 5 are connected mutually by a refrigerant circuit, and a bypass circuit 6 making connection between the indoor heat exchanger 3 and the decompressor 4 and between the four-way valve 2 and the outdoor heat exchanger 5 connected to the freezing cycle. A refrigerant heating two-way valve 7 and a refrigerant heater 8 are arranged in the bypass circuit 6. When an outside air temperature detected by an outside air temperature detection means is lower than a predetermined temperature, the refrigerant heating two-way valve 7 in the bypass circuit 6 is opened, and bypass operation is carried out so that a refrigerant heated by the refrigerant heater 8 is made to flow toward the suction side of the compressor 1. COPYRIGHT: (C)2007,JPO&INPIT
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