Blower system for vehicle air-conditioners

Details Blower system for vehicle air-conditioners Blower system for vehicle air-conditioners

1994-12-06

1996-09-10

Shoop, Jr., William M.

Electricity: motive power systems

Limitation of motor load, current, torque or force

318433, 318254, 318445, 388915, 388909, H02K 1732

Patent

active

055549136

ABSTRACT:
For enabling discrimination of whether or not a blower motor is in a locked state to be conducted promptly and reliably irrespective of the motor speed, a blower system comprises a discrimination circuit for discriminating whether or not the blower motor is in a locked state based on change in the position of the rotor of the motor, and the discriminating time period between motor locking and output of a discrimination signal is determined to be shorter for a higher set rotational speed of the motor in response to the speed setting operation of a motor speed setting device.

REFERENCES:
patent: Re33167 (1990-02-01), Moosmann et al.
patent: 3584282 (1971-06-01), Reeves et al.
patent: 4409533 (1983-10-01), Kawabata
patent: 4418304 (1983-11-01), Iwai
patent: 4639649 (1987-01-01), Seto
patent: 5019757 (1991-05-01), Beifus
patent: 5408573 (1995-04-01), Jamieson et al.

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