Automatic damper assembly

Details Automatic damper assembly Automatic damper assembly

1985-01-07

1986-04-15

Tapolcai, William E.

Automatic temperature and humidity regulation

Ventilator type

98 75, 251298, F24F 1310

Patent

active

045822506

ABSTRACT:
An automatic temperature responsive damper assembly for use within the conduit of a ventilating system designed to exhaust the air from a confined space to the atmosphere when the confined space reaches a preselected temperature greater than that in the conduit adjacent to the atmosphere includes at least one vane pivotally mounted within the conduit and preferably two. The vane or vanes are mounted so that they are movable between a generally opened position, wherein air can pass freely through the conduit, and a generally closed position, wherein air passage through the conduit is restricted. A temperature responsive drive assembly that detects the temperature of the air within the conduit is mounted therein and opens and closes the vanes. Biasing the vanes to a normally closed condition is accomplished by placing a greater portion of each vane beyond its pivotal axis and having the smaller portion of one vane cooperate with the larger portion of the other to maintain the generally closed position. Auxiliary biasing springs may also be utilized.

REFERENCES:
patent: 1427859 (1922-09-01), Schmidt
patent: 4123001 (1978-10-01), Kolt

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