| 摘要 |
<P>PROBLEM TO BE SOLVED: To sufficiently obtain both compression efficiency improvement effects of compression means and driving power reduction effects in an ejector type refrigerating cycle. <P>SOLUTION: Heat of a refrigerant discharged from a first compression means 11a of a two-stage compression type compressor 10 is released by a radiator 12, and the refrigerant is decompressed by a nozzle 13a of an ejector 13. A flow of a refrigerant evaporated by a suction side evaporator 19 is branched by a suction side branch part 22. One refrigerant is sucked from a refrigerant suction port 13b of the ejector 13 and the other refrigerant is sucked to a second compression means 21a of the compressor 10 via a flow regulating valve 38. A second compression means 21a discharge refrigerant and a refrigerant made to flow out from the ejector 13 are mixed with each other and sucked to the first compression means 11a. Thus, both of the driving power reduction effects by pressure-rising action by the ejector 13 and the compression efficiency improvement effects of the first and second compression means 11a, 21a are sufficiently obtained, so as to effectively improve a COP. <P>COPYRIGHT: (C)2010,JPO&INPIT |
