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PULSE WIDTH MODULATION CONTROL FOR HEAT PUMP FAN TO ELIMINATE COLD BLOW

  • US 20100000239A1
  • Filed: 12/21/2006
  • Published: 01/07/2010
  • Est. Priority Date: 12/21/2006
  • Status: Abandoned Application
First Claim
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1. A heat pump comprising:

  • a compressor for compressing refrigerant and delivering the refrigerant to a downstream indoor heat exchanger, said indoor heat exchanger being provided with an air-moving device for moving air over said indoor heat exchanger and into an environment to be conditioned, refrigerant passing from said indoor heat exchanger through an expansion device and then through an outdoor heat exchanger, refrigerant from the outdoor heat exchanger returning to the compressor; and

    a control for said air-moving device for said indoor heat exchanger, said control providing a pulse width modulation signal to adjust the time-average volume of air moved by said air-moving device over said indoor heat exchanger when it has been determined that there is insufficient heat rejected by said indoor heat exchanger to heat a nominal volume of air to a desired temperature.

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