Stoves and furnaces – Dampers – Stovepipe
Patent
1984-02-13
1985-02-05
Yeung, James C.
Stoves and furnaces
Dampers
Stovepipe
126312, 126285R, 98 59, F23L 300
Patent
active
044973101
ABSTRACT:
There is disclosed an improved flue box assembly for use in conjunction with a heating plant, the flue box having a housing with an interior diametric opening substantially greater than the exhaust gas inlet to and outlet from the interior of the housing, and provided with a damper plate being pivotally mounted within the housing and movable between an open position and a closed position, the damper plate further having a flue opening positioned therein, the improvement consisting of a cap pivotally mounted on the housing adjacent the outlet opening thereof, the cap adapted to pivotally move between a closed position occluding the outlet opening of the housing and an open position leaving the outlet opening unobstructed, and adjustable counterbalancing means associated with the cap for adjusting the relative pressure necessary to move the cap into an open and closed position respectively in relation to the force exerted by flue gases escaping through the outlet opening of the housing, thus providing for improved heat transfer and restoration of proper combustion zone balance in the appliance.
REFERENCES:
patent: 1263830 (1918-04-01), Wolf
patent: 2005981 (1935-06-01), Morrow
patent: 2539789 (1951-01-01), McCorkle
patent: 3407720 (1968-10-01), Westerman
patent: 4136676 (1979-01-01), McCown
Demeur Basil E.
NRG Systems, Inc.
Yeung James C.
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