Secondary air control damper arrangement

Details Secondary air control damper arrangement Secondary air control damper arrangement

1983-03-04

1984-01-17

Yuen, Henry C.

Furnaces

Utilizing powdered fuel

110265, 110347, 110106, F23D 100, F23K 302

Patent

active

044258550

ABSTRACT:
The outline of a tangentially-fired furnace combustion chamber is arranged to show a representative windbox in one corner of the furnace. The secondary air is disclosed as supplied through one set of vertically tiltable nozzles mounted in the windbox. The secondary air supply conduit is mounted to feed the tiltable nozzles. The secondary air supply conduit section adjacent to the nozzles has straightening vanes forming channels in which independently controlled louvers regulate the total cross-sectional area of the channels to maintain the desired velocity of the secondary air through the nozzles.

REFERENCES:
patent: 1762462 (1930-06-01), Andrews
patent: 4246853 (1981-01-01), Mehta
patent: 4274343 (1981-06-01), Kokkinos
patent: 4294178 (1981-10-01), Borio et al.
patent: 4304196 (1981-12-01), Chadshay

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