| 摘要 |
A first flow switching device (A) causes part of a refrigerant discharged from an injection compressor (1) to flow through a first bypass pipe (21) and be supplied to an outdoor heat exchanger (9b) targeting for defrosting. A second flow switching device (B) causes part of the refrigerant supplied to the outdoor heat exchanger (9b) targeting for defrosting to enter a second bypass pipe (31). |
