| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner capable of closing an electric expansion valve even in case of interruption of power supply from a power supply source. SOLUTION: This air conditioner comprises a refrigeration cycle formed by successively connecting a compressor 3, a first heat exchanger 5, a first electric expansion valve 7, a second electric expansion valve 13, and a second heat exchanger 15 through a pipe 1 for circulating a refrigerant. This air conditioner further comprises expansion valve closing mechanisms 25, 27 and 35 for closing the first and second expansion valves 7 and 13 in interruption of power supply from the power supply source. The expansion valve closing mechanisms 25, 27 and 35 comprise a battery 35 adapted as an auxiliary power source and an interruption detection means 35 for detecting the interruption of power supply from the power supply source, so that, when the detection means 35 detects the interruption of power supply from the power supply source, the first and second valves 7 and 13 are closed by the power supplied from the battery. COPYRIGHT: (C)2005,JPO&NCIPI
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