| 摘要 |
PROBLEM TO BE SOLVED: To supply a liquid-phase refrigerant to a refrigerant heater 22 in a short time. SOLUTION: A gas-phase refrigerant flowing out from the refrigerant heater 22 through a refrigerant introduction pipe 25a, and a gas-phase refrigerant discharged from a refrigerant discharge port of a compressor 12a, flow into an indoor machine 40a (40b) in a state that a solenoid valve 27 opens between a refrigerant downstream side of the indoor machine 40a (40b) and a refrigerant upstream side of an outdoor expansion valve 16. The amount of heat radiated in the indoor machine 40a (40b) is increased, and a heating capacity of the indoor machine 40a (40b) can be increased in comparison with a case when the refrigerant heater 22 is not used. In addition, as the liquid-phase refrigerant is supplied to the refrigerant heater 22 by the refrigerant discharging force of the compressor 12a, the liquid-phase refrigerant can be supplied to the refrigerant heater 22 in a short time. COPYRIGHT: (C)2009,JPO&INPIT
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