Refrigeration – Automatic control – Refrigeration producer
Reexamination Certificate
2005-09-20
2005-09-20
Tanner, Harry B. (Department: 3744)
Refrigeration
Automatic control
Refrigeration producer
C417S274000
Reexamination Certificate
active
06945062
ABSTRACT:
A heat pump water heater system includes a compressor that has a variable clearance volume that can be selectively controlled to control the mass flow rate of refrigerant from the compressor. Under higher ambient air temperature conditions, the variable volume is increased to keep refrigerant in a variable clearance volume chamber and to decrease the mass flow rate of the refrigerant from the compressor. Under lower ambient air temperature conditions the variable volume is decreased to increase the mass flow rate. The variable clearance volume allows for maintaining optimum system performance under a variety of ambient air temperature conditions.
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Chen Yu
Zhang Lili
Ali Mohammad M.
Carlson & Gaskey & Olds
Carrier Corporation
Tanner Harry B.
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