F - Mech Eng,Light,Heat,Weapons – 23 – D
Patent
F - Mech Eng,Light,Heat,Weapons
23
D
158/68
F23D 14/26 (2006.01) F23D 11/40 (2006.01) F23D 14/18 (2006.01) F23D 14/22 (2006.01) F23D 14/36 (2006.01) F23D 14/62 (2006.01) F23D 14/74 (2006.01)
Patent
CA 1191443
FLAME RETENTION HEAD ASSEMBLY FOR FUEL BURNERS ABSTRACT OF THE DISCLOSURE: Four-stage flame retention head assembly for use in the air pipe of a fuel burner having a fuel nozzle mounted coaxially within the air pipe. This assembly comprises an out- wardly diverging flame retention head mounted in the air pipe in front of the fuel nozzle. This head successively defines, starting from its smaller end, an air-and-fuel mixture chamber; a first inwardly open expansion chamber; a throttle section and an outwardly convex section defining a second expansion chamber. A primary air inlet annular plate is mounted transversely at the inlet end of the head and has a central opening circumscribed by a continuous annulus. The latter has a series of air inlet apertures and loovers over the apertures, the latter and the loovers causing swirling of the air as it enters into the mixing chamber. The first and second expansion chambers are provided with circumferentially spaced air apertures to pass air into the retention head to sustain combustion therein as well as to cool the head.
413362
Lefebvre Denis
Robic Robic & Associes/associates
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