Burner register with dual inlet air valves

Details Burner register with dual inlet air valves Burner register with dual inlet air valves

1986-04-23

1990-12-04

Dority, Carroll B.

Combustion

Fuel disperser installed in furnace

Plural feed means extending to common wall opening of furnace

431182, 239402, 239406, F23M 900

Patent

active

049750453

ABSTRACT:
A burner register assembly is provided for controlling a supply of secondary air to a furnace having a fuel and primary air supply and a secondary air supply. The burner register assembly includes a body and a pair of air valves in the body for communication with the secondary air supply to control the admission of secondary air to the register assembly. Each air valve communicates with a scroll section in the burner register body, which scroll section has a scroll passageway which spirals inwardly in the direction of secondary air flow to provide a controlled flow pattern of secondary air into the furnace. The air valve is disposed upstream of the scroll section with which it communicates and thus is well removed from the extreme environment of the opening or throat to the furnace. The burner register assembly also includes a shadow vane assembly positioned proximate to the outlet of the register, i.e., proximate to the furnace throat, to provide protection form radiant heat from the furnance. The shadow vane assembly includes a set of radially outwardly extending circumferentially arranged air foil-shaped vanes and a cooling passage associated with each vane.

REFERENCES:
patent: 1235855 (1917-08-01), Stillman, Jr.
patent: 1519846 (1924-12-01), Kleffel
patent: 1843662 (1932-02-01), Craig et al.
patent: 2087869 (1937-07-01), Blodgett
patent: 2269062 (1941-10-01), Stillman
patent: 2320576 (1943-06-01), Dunn
patent: 2325442 (1943-07-01), Vroom
patent: 2515813 (1950-07-01), Wiant
patent: 4500282 (1985-02-01), Eschenko et al.
patent: 4504216 (1985-03-01), Hager et al.
patent: 4681532 (1987-07-01), Chung

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