| 摘要 |
PROBLEM TO BE SOLVED: To stably operate an ejector-type refrigeration cycle without reducing COP, even under an operation condition such that flow rate fluctuation of a driving flow passing through a nozzle part of an ejector could be generated. SOLUTION: A flow of coolant discharged by a first compressor 11 is made to heat-radiate in a radiator 12 and is made to diverge at a first diverging part 13, and one diverging coolant is decompressed and expanded in a temperature-type expansion valve 14 and is heat-exchanged with the other diverging coolant in an inner heat exchanger 15, which cools the other coolant supplied to a suction-side evaporator 23 and the nozzle part 19a of the ejector 19 so as to improve the COP. Further, an intake port of a second compressor 21 is connected to an outlet side of the ejector 19 to secure the driving flow of the ejector 19, and coolant discharged by the second compressor 21 and downstream-side coolant of the temperature-type expansion valve 14 are mixed and sucked in by the first compressor 11 so as to stably operate the ejector-type refrigeration cycle. COPYRIGHT: (C)2010,JPO&INPIT |
