F - Mech Eng,Light,Heat,Weapons – 23 – M
Patent
F - Mech Eng,Light,Heat,Weapons
23
M
158/40, 158/52
F23M 9/00 (2006.01)
Patent
CA 1085710
ABSTRACT OF THE DISCLOSURE: This invention is concerned with a three-stage flame retention head assembly for use in the air tube of a fuel burner having a fuel nozzle mounted coaxially within the air tube. This assembly which provides more efficient combustion and flame pattern control, first comprises a tubular member concentrically mounted within the air tube just in front of the fuel nozzle. The tubular member comprises a conical section, a cylindrical section joined at one end thereof to the larger end of the coni- cal section, and an outwardly flaring flange section joined at the smaller end thereof to the other end of the cylindrical sec- tion and dished to provide a convex outer surface. The assembly also comprises a spinner plate mounted in the smaller end of the conical section of the tubular member and adapted to mix and swirl air and fuel. This spinner plate has a central opening therein defined by a continuous annulus, and has vanes in its outer periphery extending outwardly from the continuous annulus. In accordance with the invention, the cylindrical section of the tubular member has circumferentially spaced openings therein; and the outwardly flaring flange section has a row of circumferentially spaced, elongated slots therein. These openings and elongated slots pass air into the tubular member when the assembly is in operation, whereby the conical section provides a first mixing and heating chamber wherein pri- mary combustion takes place, the cylindrical section provides a second mixing chamber, and the flange section provides a third mixing chamber.
265059
Ecosan Ltee
Robic Robic & Associes/associates
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