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Dual capillary tube / heat exchanger in combination with cycle priming for reducing charge migration

United States Patent

9,696,077
July 4, 2017
View the Complete Patent at the US Patent & Trademark Office
A refrigerator appliance including a multi-capacity compressor and a refrigerant circuit with two conduits and pressure reducing devices arranged in parallel between an evaporator and a condenser. Refrigerant can flow through one, both or none of the conduits and pressure reducing devices. The appliance also has a heat exchanger in contact with either one pressure reducing device, or one conduit between the pressure reducing device and the valve system. The appliance also includes a controller for priming the compressor above a nominal capacity for a predetermined or calculated duration at the beginning of an ON-cycle.
Gomes; Alberto Regio (St. Joseph, MI), Kuehl; Steven J. (Stevensville, MI), Litch; Andrew D. (St. Joseph, MI), Wu; Guolian (St. Joseph, MI)
Whirlpool Corporation (Benton Harbor, MI)
13/ 400,804
20130213065
February 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.