Automatic temperature and humidity regulation – Humidity control
Patent
1998-09-18
2000-11-14
Wayner, William
Automatic temperature and humidity regulation
Humidity control
165250, 454256, B01F 302, G05D 2100
Patent
active
061457507
ABSTRACT:
An apparatus for ventilating the crawl space of a structure, comprising an exhaust fan adapted to at least partially occlude an aperture in a structure and oriented to, upon receiving an appropriate stumulus, exhaust crawl space air through said aperture to outside the structure, a temperature sensor and a relative humidity sensor for sensing the respective temperatures and relative humidities of crawl space air and of outside air, and for transmitting respective stimulus dependent thereon to a programmed computer, said computer determining the absolute moisture differential therebetween and comparing said differential to a pre-set minimum absolute moisture differential parameter for ventilation activation, said computer also functionally connected to said fan for controlling the activation thereof, said computer also programmed to discriminatorily activate either a humidity decreasing or a humidity increasing mode depending upon a maximum or minimum inside RH parameter, and to deactivate said mode at a breakpoint within said parameters.
REFERENCES:
patent: 4911357 (1990-03-01), Kitamura
patent: 5253804 (1993-10-01), Sarazen, Jr. et al.
patent: 5722587 (1998-03-01), Jung
patent: 5881951 (1999-03-01), Carpenter
Calhoun Joe D.
Wayner William
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