HEAT PUMP DEVICE, AND CONTROL METHOD AND REFRIGERANT HEATER FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a heat pump device, and a control method and a refrigerant heater for the heat pump device capable of eliminating restrictions on a layout while stably supplying a liquid refrigerant to the refrigerant heater 40 used as a second heat sink without complicating the device in collecting waste heat from hot water on a high pressure side without using a refrigerant pump. SOLUTION: Sub-circuits 40-43 are provided with the refrigerant heaters 40 used as the second heat sinks for indirectly heating the refrigerant with cooling water from an engine 111 to evaporate it; a liquid refrigerant supply line 41 branched from between a receiver 14 and an outdoor heat exchanger 16 to supply the liquid refrigerant to the refrigerant heater 40 through an upstream side check valve 41b; an evaporated refrigerant supply line 42 for supplying the refrigerant evaporated in the refrigerant heater 40 between a compressor 12 and an indoor heat exchanger 36 through a downstream side check valve 42b; and a suction line 43 connected to the intake side of the compressor 12 from the refrigerant heater 40 through a liquid refrigerant intake solenoid valve V1 to suck the inside of the refrigerant heater 40. COPYRIGHT: (C)2006,JPO&NCIPI