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US 4,398,472 AGranted
Electric burner for oxidizing oven
AssigneeHudson Wire Company
InventorsRichard E. Burke, Edward H. Harris, Joseph W. Bolton
Life of this patent
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AssigneeHudson Wire Company
InventorsRichard E. Burke, Edward H. Harris, Joseph W. Bolton
Estimating the term…
A recirculating oven in which air and oxidized gases from a burner tube are directed to evaporation zone outlets at the bottom of the oven and curing zone outlets at the top and fed into a pair of wire work chambers, the gas streams mixing between the zones and return with volatile substances through a return duct to a burner mounted in the upper portion of the burner tube. The burner tube is mounted within a burner tube housing partitioned so that the volatile fumes returning to the burner are maintained separately from the oxidized gases and air exiting from the burner tube. The burner is electrically energized and has a cylindrical housing supporting a number of radial vanes supported between spaced baffle plates, the vanes imparting a vortex pattern to the gases entering holes in the housing periphery. A support plate on the top of the housing carries two high temperature ceramic igniter heater elements surrounded by a multiplicity of resistance type electrical heating elements. The electrical heating elements superheat the returning gases and the ceramic igniter elements cause the gases to ignite and incinerate the volatile components of the gas. A conically shaped annular deflector below the spaced plates directs the gases at the bottom of the housing toward the center.
An electric burner for an incinerating oven comprising a hollow housing elongated along a longitudinal axis and having a multiplicity of openings communicating the interior with the exterior thereof, a plurality of arcuately shaped vanes, means for mounting said vanes in spaced relationship about at least an upper portion of the interior of said housing and extending from the interior surface of the housing toward a central portion spaced from said axis, a support plate secured to and closing one end of said housing, that end being defined as the top end, a deflector plate secured to the housing adjacent the bottom end and having a substantially central aperture such that gases entering said openings may exit through said aperture, a multiplicity of elongated U-shaped electrical resistance heating elements, each of said elements having a pair of free ends adapted to receive electrical current, means carried by said support plate for mounting said elements in spaced apart relationship in said housing with the free ends extending from the top of the support plate, at least one elongated U-shaped ceramic heating element capable of operating at a surface temperature above 1400 degrees F for igniting gases flowing through said housing, each ceramic element having a pair of free ends adapted to receive electrical current, and means carried by said support plate for mounting said ceramic elements in said housing substantially intermediate said resistance elements with the free ends extending from the top of said support plate.
Dependencies are inferred from the claim text.