Controlling HVAC speed of condenser fans using pressure sensors

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United States of America Patent

PATENT NO 9809088
SERIAL NO

13912759

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A controller for a heat, ventilation, and air conditioning (HVAC) unit may comprise a compressor control signal output; a condenser fan control signal output; a pressure sensor input that receives information regarding an output pressure of the compressor; a temperature input that receives information regarding ambient temperature; a processor coupled to the compressor control signal output, the condenser fan control signal output, the first pressure sensor input, and the temperature input; and a computer-readable memory that stores instructions. The processor may cause the controller to: turn on the compressor via the compressor control signal output based on a request for air conditioning, select a condenser fan speed, from condenser fan control data stored in the computer readable memory, based on the ambient temperature and an output pressure of the compressor, and set a speed of the condenser fan to the selected condenser fan speed via the condenser fan control signal.

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Patent Owner(s)

  • CATERPILLAR INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hovel, Douglas J Lincoln, US 3 26
Njos, Erick A Washington, US 4 27
Spurgeon, Daniel A Washington, US 13 87

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