| 摘要 |
PROBLEM TO BE SOLVED: To obtain an air conditioner suitable for a global environmental protection and power saving by executing a space saving of an outdoor unit and reducing a sealing refrigerant amount. SOLUTION: The air conditioner comprises a main refrigerating cycle by sequentially providing a compressor 11, an outdoor heat exchanger 13, an outdoor fan 15, a pressure reducing unit 16, and an indoor heat exchanger 17. This conditioner further comprises a second refrigerating cycle in which a second compressor 11a, a second outdoor heat exchanger 13a, a second pressure reducing unit 14a, and a second heat exchanger 21 are coupled via a refrigerant duct; and a second heat exchanger 21 for heat exchanging a refrigerant between the exchanger 13 and the reducing unit 6 with a refrigerant between the reducing unit 14a and the compressor 11a. Air is sent to the exchanger 13 and the exchanger 13a by the outdoor fan 15.
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