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METHOD AND APPARATUS FOR CONTROLLING VENTILATION SYSTEMS

  • US 20100286831A1
  • Filed: 07/31/2008
  • Published: 11/11/2010
  • Est. Priority Date: 08/03/2007
  • Status: Active Grant
First Claim
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1. A ventilation system comprising:

  • a ventilator;

    a first direct current (DC) fan drawing air from an exterior of a building for circulation into an interior of the building, the first DC fan producing a supply airflow through the ventilator;

    a second DC fan drawing a return air from the interior of the building for exhausting to the exterior of the building, the second DC fan producing an exhaust airflow through the ventilator enclosure, said supply airflow and said exhaust airflow undergoing an energy exchange therebetween in the ventilator; and

    a controller controlling of a first speed of the first DC fan and a second speed of the second DC fan, thereby separately adjusting the supply airflow and the exhaust airflow in response to a first input received from a first temperature sensor in the supply airflow positioned upstream of the energy exchange in the ventilator, a second input received from a second temperature sensor in the supply airflow positioned downstream of the energy exchange in the ventilator and a third temperature sensor in an exhaust airflow positioned downstream of the energy exchange in the ventilator, said first, second and third temperature sensors each independently outputting temperature signals to the controller for use in optimizing the supply and exhaust airflows.

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