| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance cycle efficiency of a heat pump by an ejector in an internal combustion engine-driven heat pump type air conditioner. <P>SOLUTION: An outdoor heat exchanger 13, an indoor heat exchanger 21, a selector valve 12, and the ejector 15 comprising a nozzle 15a, a suction part 15b, a mixing part 15c and a diffuser 15d are provided in a refrigerant circulation passage 30 of the internal combustion engine-driven heat pump type air conditioner. A gas-liquid separating device 17 is provided in a return pipe passage 30c connected to the diffuser, and thus separated liquid phase refrigerant is returned to a compressor 11. The ejector, the outdoor heat exchanger and the indoor heat exchanger are connected to the refrigerant circulation passage so that the refrigerant from the outdoor or the indoor heat exchanger working as a condenser in accordance with switching of the supply order of the refrigerant by the selector valve is introduced into the nozzle, the refrigerant from the heat exchanger working as an evaporator is introduced into the suction part, and the liquid phase refrigerant separated by the gas-liquid separating device is introduced into the heat exchanger working as the evaporator. <P>COPYRIGHT: (C)2007,JPO&INPIT |
