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Synchronous temperature rate control and apparatus for refrigeration with reduced energy consumption

United States Patent

September 22, 2015
View the Complete Patent at the US Patent & Trademark Office
A refrigerator appliance configuration, and associated methods of operation, for an appliance with a controller, a condenser, at least one evaporator, a compressor, and two refrigeration compartments. The configuration may be equipped with a variable-speed or variable-capacity compressor, variable speed evaporator or compartment fans, a damper, and/or a dual-temperature evaporator with a valve system to control flow of refrigerant through one or more pressure reduction devices. The controller, by operation of the compressor, fans, damper and/or valve system, depending on the appliance configuration, synchronizes alternating cycles of cooling each compartment to a temperature approximately equal to the compartment set point temperature.
Gomes; Alberto Regio (St. Joseph, MI), Keres; Stephen L. (Watervliet, MI), Kuehl; Steven J. (Stevensville, MI), Litch; Andrew D. (St. Joseph, MI), Richmond; Peter J. (Berrien Springs, MI), Wu; Guolian (St. Joseph, MI)
Whirlpool Corporation (Benton Harbor, MI)
13/ 476,475
May 21, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT This invention was made with government support under Award No. DE-EE0003910, awarded by the U.S. Department of Energy. The government has certain rights in the invention.