Flue damper and draft regulator

Details Flue damper and draft regulator Flue damper and draft regulator

1979-11-13

1981-07-07

Yeung, James C.

Stoves and furnaces

Dampers

Stovepipe

126312, 236 45, F23L 300

Patent

active

042768713

ABSTRACT:
A flue damper and draft regulator for a furnace in which the orientation of the damper is controlled by a vane. One face of the vane is subject to external atmospheric pressure. The other face of the vane is subject to the flue pressure both upstream and downstream from the damper. Exposing the vane to the reduced pressure on the chimney side provides a force which closes the damper when the burner shuts off.

REFERENCES:
patent: 1773585 (1930-08-01), Klockau
patent: 1833888 (1931-12-01), Barker
patent: 2113440 (1938-04-01), Cole
patent: 2164607 (1939-07-01), Cole
patent: 2296410 (1942-09-01), Wetzsteon
patent: 2319652 (1943-05-01), Young

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