Fan speed controller

Details Fan speed controller Fan speed controller

1985-03-25

1987-04-21

Croyle, Carlton R.

Pumps

Condition responsive control of pump drive motor

Responsive to pump or pump fluid temperature

318334, 318473, 236DIG9, F04B 4910

Patent

active

046592903

ABSTRACT:
The fan speed controller disclosed herein mounts directly on a fan whose speed is to be controlled and provides electronic speed control circuitry mounted in a disk-like enclosure aligned with the fan hub. The enclosure is compartmented and apertured to provide a representative air flow past a temperature sensitive element employed by the circuitry. Fan speed is controlled as a function of air temperature above a sharply defined minimum to provide effective cooling with minimal noise generation.

REFERENCES:
patent: 2447723 (1948-08-01), Wheeler
patent: 3353078 (1967-11-01), Maynard
patent: 3449605 (1969-06-01), Wilson
patent: 3543119 (1970-11-01), Bauer et al.
patent: 3896359 (1975-07-01), Olander et al.
patent: 4352635 (1982-10-01), Saunders
patent: 4506199 (1985-03-01), Asche

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