| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent a refrigerant of low temperature from being distributed to a load-side heat exchanger in a defrosting operation. <P>SOLUTION: In a heat radiating operation, a switching mechanism 2 is controlled to allow the refrigerant discharged from a compressor 1 to flow to the load-side heat exchanger 3, so that the heat exchanger 3 is operated as a radiator and at least one of heat source-side heat exchangers 5a, 5b is operated as an evaporator. Meanwhile, in the defrosting operation for removing frost of the heat exchanger 5a, the switching mechanism 2 is controlled to allow the refrigerant discharged from the compressor 1 to flow to the heat exchanger 3 and the heat exchanger 5a, so that the heat exchanger 3 and the heat exchanger 5a are operated as the radiators, and the heat exchanger 5b is operated as the evaporator. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
