REFRIGERATION CYCLE DEVICE

摘要

A warm water/refrigerant heat exchanger (18) for exchanging heat between warm water and refrigerant is provided in a refrigerant route between an expansion mechanism (17) and an evaporator (19). When a refrigerant temperature detector (21) detects a temperature, for example, equal to or less than 0ºC, a second circulation pump (22) is operated to cause warm water in a warm water container (12) to flow to the warm water/refrigerant heat exchanger (18). This heats the refrigerant to increase evaporation pressure, and heat collection operation is performed by the evaporator (19) while the evaporator (19) is defrosted. Although vapor pressure rises with the defrosting, a refrigerant cycle (11) continues the heat collection operation so that warm water can be continuously produced.