Refrigeration – Automatic control – Trapping and discharging refrigerant batches
Reexamination Certificate
2005-06-03
2011-11-15
Tyler, Cheryl J (Department: 3744)
Refrigeration
Automatic control
Trapping and discharging refrigerant batches
C062S149000, C062S292000, C062S324400
Reexamination Certificate
active
08056348
ABSTRACT:
A heat pump system includes a compressor, a reversing valve, an outdoor heat exchanger and an indoor heat exchanger in a circuit, and a refrigerant-to-water heat exchanger. In the air cooling with water heating mode, the air heating with water heating mode and the water heating only mode, water from a water reservoir is passed through refrigerant-to-water heat exchanger. A refrigerant reservoir may be provided for use in refrigerant charge control. A refrigerant line (71) couples reservoir to the refrigerant circuit intermediate the outdoor and indoor heat exchangers for directing liquid refrigerant into the reservoir and a refrigerant line (73) couples the refrigerant circuit upstream of the suction inlet to the compressor for returning refrigerant to the refrigerant circuit. A controller controls flow into and from the refrigerant reservoir through selective opening and closing of control valve (72) in line (71) and control valve (74) in line (73).
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Supplementary European Search Report mailed May 10, 2011 (6 pgs.).
Supplementary European Search Report mailed Aug. 17, 2010 (3 pgs.).
Fernandez Roberto G.
Murakami Toshio
Tesche Carlos A.
Bradford Jonathan
Carrier Corporation
Colburn Colburn LLP
Tyler Cheryl J
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