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REFRIGERATOR WITH VARIABLE CAPACITY COMPRESSOR AND CYCLE PRIMING ACTION THROUGH CAPACITY CONTROL AND ASSOCIATED METHODS

  • US 20130213064A1
  • Filed: 02/21/2012
  • Published: 08/22/2013
  • Est. Priority Date: 02/21/2012
  • Status: Active Grant
First Claim
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1. A refrigerator appliance, comprising:

  • a refrigeration compartment;

    a condenser;

    an evaporator in thermal communication with the compartment;

    a refrigerant;

    a multi-capacity compressor with a maximum capacity, a minimum capacity, and a nominal capacity;

    a refrigerant circuit arranged to allow flow of the refrigerant between the condenser, the evaporator and the compressor, the circuit comprising a primary evaporator conduit arranged between the condenser and the evaporator;

    a primary pressure reducing device arranged within the primary evaporator conduit;

    a valve system in the evaporator conduit capable of selectively directing or restricting flow of the refrigerant through the evaporator conduit; and

    a controller for controlling the valve system and the compressor to maintain the refrigeration compartment at any of a plurality of selectable temperatures, wherein the controller is further adapted to operate the compressor upon the initiation of a compressor ON-cycle at a priming capacity above the nominal capacity for a priming duration that is predetermined or calculated.

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