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CONTROL SYSTEM FOR OPERATING CONDENSER FANS

  • US 20110083454A1
  • Filed: 03/31/2010
  • Published: 04/14/2011
  • Est. Priority Date: 03/31/2009
  • Status: Active Grant
First Claim
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1. A refrigeration system comprising:

  • a variable capacity compressor system configured to compress refrigerant;

    a condenser configured to receive and to condense the compressed refrigerant;

    an expansion device configured to expand the condensed refrigerant;

    an evaporator configured to evaporate the expanded refrigerant prior to returning the refrigerant to the variable capacity compressor system;

    one or more fans driven by a fan drive and configured to displace air over the condenser;

    a means for determining a discharge pressure of the variable capacity compressor system; and

    a controller operatively coupled to the fan drive and configured to regulate the fan drive based on an operational capacity of the variable capacity compressor system when the discharge pressure is within a predetermined range and to regulate the fan drive based on the discharge pressure when the discharge pressure is outside of the predetermined range.

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