Energy efficient damper for a furnace

Details Energy efficient damper for a furnace Energy efficient damper for a furnace

1982-01-26

1984-05-22

Yeung, James C.

Stoves and furnaces

Dampers

Stovepipe

126312, 126285R, 236 45, 236 93R, F23L 300

Patent

active

044495129

ABSTRACT:
A damper for sealing and unsealing a vertical furnace flue pipe to minimize the escape of heat when the furnace is not operating, the damper comprising a cylindrical body adapted to form a section of vertical flue pipe, the cylindrical body having a top opening and a bottom opening at least one transverse rod horizontally transversing the body and carried by opposed apertures in opposing wall portion of the body, a pair of oppositely extending gull-wing shaped damper shutters pivotally mounted on the rod and in the closed condition extending upwardly and outwardly to the inner surfaces of the cylindrical walls of the damper section, the lower edges of the wing sections engaging an annular rim mounted on the inner walls, the wings opening to a vertical position when the furnace is operating and closing by gravity when the furnace is not operating.

REFERENCES:
patent: 1743731 (1930-01-01), Scott
patent: 2232981 (1941-02-01), Swanson
patent: 4146048 (1979-03-01), McCabe

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