Stoves and furnaces – Dampers – Stove
Patent
1980-03-26
1981-12-22
Dority, Jr., Carroll B.
Stoves and furnaces
Dampers
Stove
126 77, F23L 300
Patent
active
043065384
ABSTRACT:
An automatic air inlet control for combustion devices having an inlet for combustion air and a discharge outlet or flue will include, an elongated tubular member defining a flow passage having an inlet and an outlet, the outlet end of the tubular member being connected to the combustion air inlet for said combustion device. A fulcrum member connected to the tubular member adjacent the inlet end has a pivotal section disposed a predetermined spaced distance forward of the transverse vertical plane of said inlet end for pivotally supporting a damper assembly thereon, said damper assembly having a cover plate with a diameter greater than the diameter of said inlet end of the tubular member and further provided with a knife edge section for mounting the damper assembly in the pivotal section of the fulcrum, and a counter weight balancing assembly connected to the cover plate so as to depend therefrom in assembled position on the side of the pivotal section remote from the cover plate so as to normally balance the damper assembly to open position. A governor assembly to limit the opening movement of the damper assembly to provide a predetermined maximum flow of combustion air through said automatic air inlet control.
The automatic air inlet control as above described having means to coact with the pivot section of the fulcrum member so as to adjust the relative distance of the edge of the cover plate remote from the fulcrum member so as to abet the regulation of the predetermined minimum air flow through the automatic air inlet control when the damper assembly is in the closed position.
REFERENCES:
patent: 2370891 (1945-03-01), Thornquist
Bobis Daniel H.
Dority Jr. Carroll B.
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