摘要 |
It is an object to prevent a liquid refrigerant from being drawn into a compressor. A heat pump apparatus (100) includes a refrigerant circuit (6) in which a refrigerant circulates, and which is configured by sequentially connecting a compressor (1), a first heat exchanger (2), an expansion valve (3), a second heat exchanger (4), and a third heat exchanger (5), and connecting a bypass flow path (9) bypassing the third heat exchanger between the second heat exchanger and the compressor. The heat pump apparatus also includes a water circuit (13) in which water circulates, and which is configured by sequentially connecting the third heat exchanger, the first heat exchanger, and a tank (12). In the heat pump apparatus, if there is a risk of the liquid refrigerant being drawn into the compressor, a three-way valve (10) is controlled such that the refrigerant flows through the third heat exchanger to be heated by water and evaporated. |