| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerating cycle device advantageous for defrosting the frost of an air heat exchanger while performing condensation operation in a condensation heat exchanger in a defrosting mode. SOLUTION: This refrigerating cycle device has a compressor 1, the condensation heat exchanger 2, an expansion valve 3, and an evaporation heat exchanger 4. The evaporation heat exchange 4 has the air heat exchanger 41 and a heat source heat exchanger 42. A bypass passage 71 and a bypass valve 72 are arranged for connecting a delivery port 1o of the compressor 1 to the air heat exchanger 41. When performing the defrosting mode, a control part 6 eliminates or reduces a flow rate for supplying a refrigerant to the air heat exchanger 41 while making the refrigerant flow to the heat source heat exchanger 42, and supplies the high-temperature high-pressure refrigerant from the compressor 1 to the air heat exchanger 41 via the bypass passage 71 and the bypass valve 72 by opening the bypass valve 72. COPYRIGHT: (C)2008,JPO&INPIT
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