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US 10,208,995 B2Granted
Fan motor controller for use in an air conditioning system
AssigneeLennox Industries Inc.
InventorJeff Mangum
Life of this patent
Estimating the term…
Abstract
An air conditioning system includes a compressor housing and a motor having fan blades rotatably coupled thereto and located within the compressor housing. The motor has a rotation sensor associated with it that is configured to sense a rotation of the fan blades. The system also includes a controller coupled to the motor that is configured to increase a torque of the motor when the rotation sensor indicates that the fan blades are not rotating after an on-command signal is received by the motor.
Claims20
An air conditioning system, comprising:
- a compressor housing;
- a motor having fan blades rotatably coupled to the motor and located within said compressor housing, said motor having a sensor operable to detect when the fan blades pass by the sensor;
- and
- a controller coupled to said motor and said sensor, said controller having programming circuitry comprising a program configured to increase a torque of said motor to overcome a physical blockage when said sensor fails to send a signal to the controller indicating that the fan blades have passed by said sensor a predetermined time after an on command signal is received by said motor, wherein once the fan blades pass the sensor the controller returns the air conditioning system to normal operation.
1 more element
A method of manufacturing an air conditioning system, comprising:
- providing a compressor housing;
- placing a motor having fan blades rotatably coupled to the motor within said compressor housing, said motor having a sensor operable to detect when the fan blades pass by the sensor;
- and
- coupling a controller to said motor and said sensor, said controller having programming circuitry comprising a program configured to increase a torque of said motor when said sensor fails to send a signal to the controller indicating that the fan blades have passed by said sensor a predetermined time after an on command signal is received by said motor, wherein once the fan blades pass by the sensor the controller returns the air conditioning system to normal operation.
1 more element
Dependencies are inferred from the claim text.