Window fan with controller

Details Window fan with controller Window fan with controller

1990-02-22

1991-03-19

Wayner, William E.

Automatic temperature and humidity regulation

Humidity control

98 4204, 165 16, 236 493, B01F 302

Patent

active

050003810

ABSTRACT:
A window fan with an electronic controller having an AUTO mode of operation that is responsive to the .DELTA.T between inside and outside temperature, a minimum inside temperature threshold, and the outside relative humidity. Accordingly, if it is relatively hot or humid outside, or if it is relatively cold inside, the window fan is inactive. Thus, the fan is automatically activated only during those time periods when it is most advantageous to ventilate with outside fresh air.

REFERENCES:
patent: 2177596 (1939-10-01), Haines
patent: 2257462 (1941-09-01), Gildersleeve et al.
patent: 2383533 (1945-08-01), Crise
patent: 2553172 (1951-05-01), Carrick
patent: 2750868 (1956-06-01), Mieczkowski et al.
patent: 3967779 (1976-07-01), Logsdon
patent: 4136822 (1979-01-01), Felter
patent: 4422444 (1983-12-01), Webb, Jr.
Honeywell Manual on Solid State Economizer Logic Module.

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