Blower motor for hvac systems
AssigneeNidec Motor Corporation
InventorArthur E. Woodward
Life of this patent
Estimating the term…
Abstract
A blower motor assembly having a variable speed motor that is suitable for replacing a PSC motor in a residential HVAC (heating, ventilation, and air conditioning) system. The blower motor assembly includes a variable speed motor and motor controller; a first power input for receiving a plurality of AC power signals from a control device for use in determining an operating parameter for the motor; and a second power input for receiving AC power from an AC power source for powering the motor controller even when no AC power signals are received by the first power input.
Claims20
A method of replacing a permanent split capacitor motor with a variable speed motor assembly including a variable speed motor, the method comprising:
- removing the permanent split capacitor motor;
- connecting speed/tap selection wires from a furnace control board to a sensing circuit of the variable speed motor assembly;
- and
- connecting an AC power line to a rectifier circuit of the variable speed motor assembly for powering the variable speed motor independently of the furnace control board.
A method of replacing a permanent split capacitor motor with a variable speed motor, the method comprising:
- removing the permanent split capacitor motor;
- connecting five speed/tap selection wires from a furnace control board to five inputs of a sensing circuit of the variable speed motor assembly;
- and
- connecting an AC power line to a rectifier circuit of the variable speed motor assembly for powering the variable speed motor independently of the furnace control board.
A method of replacing a permanent split capacitor motor with a variable speed motor, the method comprising:
- removing the permanent split capacitor motor;
- connecting speed/tap selection wires from a furnace control board to a sensing circuit of the variable speed motor assembly, wherein the speed/tap selection wires are used for determining a speed setting of the variable speed motor;
- connecting an AC power line to a rectifier circuit of the variable speed motor assembly for powering the variable speed motor independently of the furnace control board;
- and
- programming start delays, stop delays, start ramp-ups, or stop ramp-downs directly into a motor controller of the variable speed motor independently of any speed settings provided by the furnace control board.
Dependencies are inferred from the claim text.