Air conditioner.

摘要

An air conditioner in which, when a first compressor 1, 201 is being operated and a second compressor 2, 202 is stopped, liquid refrigerant does not flow into the second compressor even in a state of wet vapor suction, a decrease in lubricating oil in the second compressor or a decline in its concentration are not experienced, and breakage of the second compressor, due to faulty lubrication when the second compressor is started, does not occur. The air conditioner which does not lapse into a wasteful shortage of cooling and heating capabilities when the air conditioner is not in the state of wet vapor suction, by reliably detecting the presence or absence of the state of wet vapor suction. The first compressor and the second compressor are connected together by an equalizing pipe 3, 203. A bypass passage 28 which connects together a discharge pipe 6 and a suction pipe 8 of the second compressor 2 is provided. <IMAGE>