| 摘要 |
<p>PROBLEM TO BE SOLVED: To allow a hot water supply heat exchanger to serve as an evaporator. SOLUTION: A solenoid valve 32 is mounted on a refrigerant pipeline 41 that connects a hot-water supply heat exchanger 37 and the delivery side of a compressor 25, and a refrigerant pipeline 42 equipped with a solenoid valve 33 connects the downstream side of the solenoid valve 32 and the upstream side of an accumulator 39. Therefore, when a four-way valve 26 is changed over to connect the delivery side of the compressor 25 to an outdoor heat exchanger 27 and motordriven valves 30 and 31 and the solenoid valve 32 are closed, the hot water supply heat exchanger 37 can be used as an evaporator and cold-heat can be accumulated in water in a hot water storage tank 38.</p> |
