| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner capable of saving energy greatly and having high cycle efficiency (coefficient of performance:COP) irrespective of operation condition of cycle and cycle configuration. SOLUTION: This air conditioner has a refrigeration cycle connecting a compressor 1, a heat exchanger 3 on heat source side, a receiver 5, a second pressure reducing device 7a, and a heat exchanger 8 on use side sequentially by pipes. It is provided with an injection circuit 107 connected to the compressor 1 from the receiver 5 and a liquid refrigerant extraction pipe 108 taking out liquid refrigerant in the receiver 5. The liquid refrigerant extraction pipe 108 is connected to the injection circuit 107, and liquid refrigerant is mixed with gas refrigerant in the receiver 5 to inject into the compressor 1. COPYRIGHT: (C)2004,JPO
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