Combustion – Heated line section feeds flame holder – Distinct exhaust products line heats feed line
Patent
1992-09-11
1994-07-05
Yeung, James C.
Combustion
Heated line section feeds flame holder
Distinct exhaust products line heats feed line
431115, 431167, 431 11, 126 91A, F23D 1144
Patent
active
053262557
ABSTRACT:
A burner suitable for heating a furnace chamber of an industrial furnace which is equipped with a recuperative preheater for combustion air has a combustion chamber at one end and a feed-through cap at the other end which is accessible outside of a furnace in which the burner is installed. The tubular recuperative preheater is of the coaxial countercurrent flow configuration extending between the combustion chamber and an annular outflow collector cap. A coaxial fuel pipe is centered in the burner extending to the combustion chamber. Overheating of the burner cap is prevented by means of a spacer sleeve of small heat conductivity interposed between the preheater and the burner cap. This permits the valves to be seated in the burner cap without risk of thermal damage. For protection of personnel against contact with hot surfaces, a perforated metal shield is provided between the burner cap and the outflow cap of the recuperator, essentially covering all the portions of the burner outside a furnace wall.
REFERENCES:
patent: 4392818 (1983-07-01), Wunning
patent: 4401099 (1983-08-01), Collier
patent: 4877396 (1989-10-01), Wunning
WS Warmeprozesstechnik GmbH
Yeung James C.
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