Combustion – Incandescing or reflecting component – e.g. – reigniting hot... – Flame sweeps dished incandescing surface
Patent
1986-12-03
1987-10-27
Dority, Jr., Carroll B.
Combustion
Incandescing or reflecting component, e.g., reigniting hot...
Flame sweeps dished incandescing surface
126 92R, F23D 1412
Patent
active
047026936
ABSTRACT:
A gas-fired infrared heater for projecting an infrared beam in a directional radiation pattern. The heater is constituted by a ribbon-type burner and a refractory body of a material radiating infrared energy when heated to an elevated temperature by the burner. The burner is formed by a metal pipe having a longitudinally-extending outlet defined by a pair of parallel plates projecting laterally from the pipe and having a set of corrugated ribbons therein, a pad of thermal insulation being secured to the outer surface of each plate, whereby when a mixture of air and gas is fed into the pipe and ignited, a sheet of flame emerges from the outlet. The burner is received within a longitudinally-extending internal channel in the refractory body, the outlet being then aligned with an internal cavity so that the flame emerging from the outlet impinges on a surface of the cavity to heat this surface to an elevated temperature causing it to emit infrared radiation. The cavity communicates with an array of openings in the body which form radiation horns to produce the desired directional infrared radiation pattern. Because the burner is thermally shielded in the channel, metal fatigue and deleterious distortion of the ribbons is avoided even at very high operating temperatures.
REFERENCES:
patent: 3366156 (1968-01-01), Belknap
patent: 3881858 (1975-05-01), Fitzgerald
patent: 4507083 (1985-03-01), Fraioli
Dority Jr. Carroll B.
Ebert Michael
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