| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner enabling stable defrosting operation while continuing heating operation. SOLUTION: The air conditioner is provided with: a heat pump type refrigerating cycle constituted by interconnecting a compressor 1, a four-way valve 2, an indoor heat exchanger 3, a decompression device 4 and outdoor heat exchangers 5a, 5b; a first bypass circuit 6 interconnecting the indoor heat exchanger 3 and the decompression device 4 and the four-way valve 2 and the suction side of the compressor 1 and having a thermal storage tank 8 and a first two-way valve 7; a second bypass circuit 9 interconnecting the thermal storage tank 8 and the second two-way valve 7 and the decompression device 4 and a connecting portion of the first bypass circuit 6; and a second two-way valve 10 provided between the first bypass circuit 6 connected between the indoor heat exchanger 3 and the decompression device 4 and the second bypass circuit 9. During defrosting of the outdoor heat exchangers 5a, 5b, the second two-way valve 10 is closed and the first two-way valve 7 is opened so as to make a refrigerant heated by heat retaining in the thermal storage tank 8 flow to the suction side of the compressor 1 and make liquid within the thermal storage tank 8 pass through the outdoor heat exchangers 5a, 5b by a liquid circulating pump 12. COPYRIGHT: (C)2011,JPO&INPIT
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