Programmable thermostat and system therefor

Details Programmable thermostat and system therefor Programmable thermostat and system therefor

1986-04-28

1987-05-19

Wayner, William E.

Automatic temperature and humidity regulation

Motors

Relay

60523, 236 345, 251 11, F01B 2910, F16K 3100

Patent

active

046660810

ABSTRACT:
A thermostat member (10) disposed within a coolant flow passage (12) of an engine comprises a valve (32,34,36,40,42) movable between first and second positions for opening and closing the flow passage (12) and when in the first condition prohibiting coolant to flow from the engine and when in the second condition permitting the coolant to flow to a heat exchanger. A thermally responsive element (22) contained within a housing portion (16), and coupled to the valve. The element expandable in volume, when exposed to a predetermined temperature so as to urge the valve into the first position to terminate flow therethrough and a heater (50) for increasing the temperature of the element above the temperature of the coolant, to cause the element to urge the valve into the second cindition.

REFERENCES:
patent: 3266235 (1966-08-01), Carlson, Jr.
patent: 4043532 (1977-08-01), Draxler
patent: 4175696 (1979-11-01), Braukmann
patent: 4493455 (1985-01-01), Pruett

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