Refrigeration – Refrigeration producer – Compressor-condenser-evaporator circuit
Reexamination Certificate
2006-06-13
2006-06-13
Jones, Melvin (Department: 3744)
Refrigeration
Refrigeration producer
Compressor-condenser-evaporator circuit
C062S191000, C062S527000
Reexamination Certificate
active
07059150
ABSTRACT:
A vapor-compression refrigerant cycle system having an ejector includes a first evaporator for evaporating refrigerant from a pressure-increasing portion of the ejector, and a second evaporator for evaporating refrigerant to be drawn into a refrigerant suction port of the ejector. Furthermore, a valve member for opening and closing a refrigerant passage of the second evaporator is arranged in serious with the second evaporator in a refrigerant flow, and refrigerant flowing out of the second evaporator flows into the refrigerant suction port through a refrigerant suction pipe. The system is provided to restrict lubrication oil contained in refrigerant from being introduced from the ejector into and staying in the refrigerant suction pipe when the valve member is closed. For example, the refrigerant suction port is provided at an upper side of the ejector.
REFERENCES:
patent: 6477857 (2002-11-01), Takeuchi et al.
patent: 6574987 (2003-06-01), Takeuchi et al.
patent: 6584794 (2003-07-01), Takeuchi et al.
patent: 2005/0178150 (2005-08-01), Oshitani et al.
patent: 2005-037056 (2005-02-01), None
Kobayashi Suteo
Komatsu Hirofumi
Kusano Katsuya
Oshitani Hiroshi
DENSO Corporation
Harness Dickey & Pierce PLC
Jones Melvin
LandOfFree
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