| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner, efficiently dissolving shortage of a refrigerant without lowering of air-conditioning capability in the air conditioner in which a plurality of outdoor units are parallel-connected. SOLUTION: In this air conditioner 1, a plurality of outdoor units 3a, 3b are parallel-connected to indoor-to-outdoor connecting pipes 11, 12 connecting the indoor units 2a, 2b and the outdoor units 3a, 3b. Refrigerant recovery pipes 17a, 17b communicating through a refrigerant recovery switching valve SV56 are provided between pipe connecting the outdoor heat exchangers 34a, 34b of the respective outdoor units 3a, 3b and a gas pipe connected to the gas side indoor-to-outdoor connecting pipe 12. During the cooling operation in which the stopped outdoor unit 3b exists, the refrigerant recovery switch valve SV56 of the stopped outdoor unit 3b is opened. The refrigerant recovery switch valve SV56 is intermittently opened and closed. The refrigerant recovery pipes 17a, 17b are provided with a capillary tube CT or a check valve CV56. COPYRIGHT: (C)2009,JPO&INPIT
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