US 7,320,229 B2
Ejector refrigeration cycle
Hiroshi Oshitani, Toyota (Japan); Hirotsugu Takeuchi, Nagoya (Japan); Haruyuki Nishijima, Obu (Japan); Makoto Ikegami, Anjo (Japan); and Naoki Yokoyama, Anjo (Japan)
Assigned to DENSO Corporation, Kariya (Japan)
Filed on Jul. 31, 2006, as Appl. No. 11/497,032.
Claims priority of application No. 2005-224119 (JP), filed on Aug. 02, 2005.
Prior Publication US 2007/0028646 A1, Feb. 08, 2007
Int. Cl. F25B 1/06 (2006.01)
U.S. Cl. 62—500  [62/191] 11 Claims
OG exemplary drawing
 
1. An ejector refrigeration cycle comprising:
a compressor that suctions and compresses refrigerant;
a radiator that releases heat from high pressure refrigerant, which is discharged from the compressor;
an ejector that includes:
a nozzle portion that depressurizes and expands refrigerant, which is supplied from an outlet of the radiator;
a refrigerant suction inlet, from which refrigerant is suctioned by a high velocity refrigerant flow that is discharged from the nozzle portion; and
a pressurizing portion that decelerates and pressurizes a refrigerant flow, in which the high velocity refrigerant flow discharged from the nozzle portion and the suctioned refrigerant supplied from the refrigerant suction inlet are mixed;
a branch passage that is branched at a point on an upstream side of the ejector and is connected to the refrigerant suction inlet;
a throttle mechanism that is provided in the branch passage and includes a capillary tube; and
an evaporator that is arranged on a downstream side of the throttle mechanism in the branch passage.