Refrigeration – Processes – Compressing – condensing and evaporating
Reexamination Certificate
2006-07-12
2009-08-18
Tapolcai, William E (Department: 3744)
Refrigeration
Processes
Compressing, condensing and evaporating
C062S196400, C062S246000
Reexamination Certificate
active
07574869
ABSTRACT:
A control valve to regulate flow of refrigerant through a refrigeration system that includes a plurality of refrigerated display cases. Each of the plurality of display cases includes a dedicated evaporator that cools return air by at least partially evaporating a refrigerant. A compressor assembly compresses evaporated refrigerant received from the plurality of evaporators. The system further includes a condenser located remotely from the plurality of display cases that rejects heat from the refrigerant to an environment. A gas main is in fluid communication with an inlet of the condenser and directs refrigerant from the compressor assembly to the condenser. A liquid main is in fluid communication with an outlet of the condenser and directs refrigerant from the condenser to the plurality of evaporators. The valve is fluidly coupled between the gas main and the liquid main, and regulates flow of refrigerant from the gas main to the liquid main.
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Refrigeration systems publicly known prior to Oct. 20, 2005, as described in the attached Statement of Relevance, 3 pages.
Hussmann Corporation
Michael & Best & Friedrich LLP
Tapolcai William E
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