System for preventing condensation on refrigerator doors and frames

  • US 8,539,783 B1
  • Filed: 02/22/2010
  • Issued: 09/24/2013
  • Est. Priority Date: 02/11/2004
  • Status: Active Grant
First Claim
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1. A system for controlling energy usage in a refrigerator having:

  • a) a frame;

    b) a frame heater attached to the frame;

    c) a door attached to the frame; and

    d) a door heater attached to the door;

    the system comprising a control unit connected to the frame heater and the door heater and configured to activate and deactivate the frame heater independently of activating and deactivating the door heater,wherein the control unit is configured to activate and deactivate the frame heater asynchronously from activating and deactivating the door heater.

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