Multi-stage refrigeration system including sub-cycle control...

Details Multi-stage refrigeration system including sub-cycle control... Multi-stage refrigeration system including sub-cycle control...

2005-02-28

2009-12-15

Tapolcai, William E (Department: 3744)

Refrigeration

Automatic control

Refrigeration producer

C062S510000, C062S513000

Reexamination Certificate

active

07631510

ABSTRACT:
A multi-stage refrigeration system is provided. The refrigeration system includes a first compression element which produces a first compressed refrigerant stream. A mixer combines the first compressed refrigerant stream with an auxiliary refrigerant stream. A second compression element is coupled to the mixer and produces a second compressed refrigerant stream. A first heat exchanger receives the second compressed refrigerant stream and generates a cooled stream. A stream splitter receives the cooled stream and provides first and second output streams. A first expansion valve receives the first output stream and controls the flow of the first output stream and a second expansion valve receives the second output stream and controls the flow of the second output stream. A second heat exchanger generates the auxiliary refrigerant stream provided to the mixer. An evaporator is coupled to the first expansion valve and the first compression element to evaporate the first output stream and provide an evaporated stream to the first compression element.

REFERENCES:
patent: 4918942 (1990-04-01), Jaster
patent: 6321564 (2001-11-01), Yamanaka et al.
patent: 6568198 (2003-05-01), Tadano et al.
patent: 2003/0106330 (2003-06-01), Yamasaki et al.
patent: 1171050 (2004-10-01), None
patent: 2002-327690 (2002-11-01), None
Chinese Office Action with English Translation issued in Chinese Patent Application No. 200610079440.6 dated May 30, 2008.

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