| 摘要 |
PROBLEM TO BE SOLVED: To improve an operational efficiency by reducing sliding load of an auxiliary compressor and to improve reliability of an auxiliary compressor, when the auxiliary compressor having a constitution in which a driving shaft projects to the outside, is used, in an air conditioner applying components from a main compressor to a second external heat exchanger in a conventional constitution as an outdoor unit, and also applying an expanding machine and an internal heat exchanger as an indoor unit in a cooling operation. SOLUTION: In this refrigerant circuit 1 in which a pressure of a refrigerant is increased by the auxiliary compressor 2 having the constitution that the driving shaft 21 projects to the outside, during the radiation by outdoor radiators 3, 6, a seal section 22 is disposed on the auxiliary compressor 2, so that the driving shaft 21 of the auxiliary compressor 2 projects to the outside while penetrating through the seal section 22, and that the seal section 22 is communicated with a suction line 10 of the main compressor 4. COPYRIGHT: (C)2009,JPO&INPIT
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