| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve cycle efficiency of a refrigerating cycle device by improving a pressure reducing efficiency ηn of a pressure reducing device. <P>SOLUTION: In this ejector type refrigerating cycle device where the flow of refrigerant is branched at a downstream side of a radiator 12, a swirl flow generation branch portion 15 for swirling the flow of refrigerant flowing into a fixed throttle 19 and a fixed nozzle portion 20a of an ejector 20 is disposed at a downstream side of the radiator 12. By the swirl flow, the boiling of the liquid-phase refrigerant in the fixed throttle 19 and the fixed nozzle portion 20a is promoted to improve the pressure reducing efficiency ηn, and specific enthalpy of the refrigerant after expansion under reduced pressure is lowered, thus the cycle efficiency (COP) is improved. <P>COPYRIGHT: (C)2008,JPO&INPIT |
