F - Mech Eng,Light,Heat,Weapons – 24 – H
Patent
F - Mech Eng,Light,Heat,Weapons
24
H
158/41
F24H 1/00 (2006.01)
Patent
CA 1063922
ABSTRACT OF THE DISCLOSURE A liquid conducting heat exchanger is mounted above a combustion zone burning combustible gas supplied by a fan through a combustible gas and air mixing chamber and a plurality of separate burner units spaced adjacent to the combustion zone. Each burner unit is specially designed to provide a gas con- ducting channel of diminishing cross-sectional area which conducts gas from the mixing chamber to a perforated screen so that gas is supplied to the combustion zone at a velocity greater than the rate of burning by the flame. Each perforated screen provides a convex surface facing the combustion zone while a first screen edge is movably retained within a recess for permitting thermal screen expansion and contraction while the remaining screen side edges are connected to a housing by a gas impervious seal. Each burner unit includes an outwardly extending lip which provides a removably sealing connection with the mixing chamber housing.
259617
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