Controller and method for operation of electric fan

Details Controller and method for operation of electric fan Controller and method for operation of electric fan

1994-10-24

1995-09-12

Bertsch, Richard A.

Pumps

Condition responsive control of pump drive motor

Having ambient condition responsive means

417 18, 417 22, 417 32, 417 53, 417 63, 236 91C, 236 493, F04B 4900

Patent

active

054492750

ABSTRACT:
A fan speed controller and a method which allows to maintain a constant level of thermal sensation felt by a human body when air temperature, relative humidity, thermal radiation and distance between the fan and the human body are changing. Desired thermal comfort index can be preset and fan speed is varied in response to air temperature, relative humidity, thermal radiation and distance between the fan and the human body to provide a constant level of thermal sensation.

REFERENCES:
patent: 3726473 (1973-04-01), Sapir
patent: 4734012 (1988-03-01), Dob et al.
patent: 4873649 (1989-10-01), Grald et al.
patent: 5145112 (1992-09-01), Ueda
patent: 5172856 (1992-12-01), Tanaka et al.
patent: 5187943 (1993-02-01), Taniguchi et al.
patent: 5261596 (1993-11-01), Tachibana et al.

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