Automatic temperature and humidity regulation – Motors – Electric
Patent
1976-04-14
1978-02-07
Wayner, William E.
Automatic temperature and humidity regulation
Motors
Electric
236 94, 318596, G05B 1106
Patent
active
040722686
ABSTRACT:
A heating control system for automatically controlling the temperature within a space is provided. The heating control system includes a temperature sensor for detecting changes in temperature without the space and in response thereto producing a control signal having a substantially linearly variable potential, the increase or decrease in the variable potential being directly varied in response to changes in temperature without the space. A heat supply includes a control valve adapted to be selectively opened to increase the rate at which heat is supplied to the space and be selectively closed to decrease the rate at which the heat is supplied to the space. A rheostat having a shiftable contact is coupled to the control valve and is disposably controlled thereby to produce a variable reference feedback signal having a substantially linearly variable potential in response to the selective opening and closing of the control valve. Comparator circuitry compares the potential of the variable control signal to the potential of the variable reference feedback signal and in response to the potential of the variable control signal being greater than the potential of the variable reference signal applies a closing signal to the control valve to effect decreasing of the rate at which same supplies heat to the space and in response to the potential of the control signal being below the variable reference potential applies an opening signal to the control valve to decrease the set rate of heat supplied to the space.
REFERENCES:
patent: 2173798 (1939-09-01), Baak
patent: 2477728 (1949-08-01), Fitzgerald
patent: 2743403 (1956-04-01), Wernlund
patent: 2755421 (1956-07-01), Roosdorp
patent: 3165681 (1965-01-01), Pinckaers
patent: 3391317 (1968-07-01), Bell
patent: 3586027 (1971-06-01), Fitzgerald, Jr.
patent: 3664358 (1972-05-01), Kosugi et al.
patent: 3697841 (1972-10-01), Nystuen
patent: 3752189 (1973-08-01), Marr et al.
Industrial Electronics Handbook-Cockrell, McGraw-Hill, 1965, pp. 2-8, 2-10, 2-11.
The James Perris Co., Inc.
Wayner William E.
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