Combustion – Combustion products return structure – Recirculation about mixing or combustion chamber wall or baffle
Patent
1975-08-11
1976-09-14
Favors, Edward G.
Combustion
Combustion products return structure
Recirculation about mixing or combustion chamber wall or baffle
431215, F23M 906
Patent
active
039804224
ABSTRACT:
A burner for burning gasified liquid fuel such as oil, in which the fuel is gasified by being mixed with hot burned gases drawn from the combustion chamber, is provided in which the normal thermal stresses found in such burners due to the return of the hot burned gases for gasifying are substantially reduced and, at the same time, start-up time is reduced. Minimization of the thermal stresses is accomplished by utilizing the heat of vaporization of the oil or other fuel to cool the hot returning gases, and so limit thermal expansion, by having the gasification of the fuel commence at a pre-selected adjusted distance from the hot gas outlet of the burner, according to the particular application and ambient conditions in which the burner is installed. This permits elimination of a gasification chamber, which in some cases has been required to provide a preheating area for the oil, and so further reduces stresses. With such elimination, rapid start-up is provided by preliminarily burning ungasified fuel introduced by the air and fuel system of the principal unit. At the same time, maximum combustion efficiency is achieved through the capability of adjustable positioning of the point of injection of the fuel into the recycled hot burned gases.
REFERENCES:
patent: 2813578 (1957-11-01), Ferguson
patent: 3078914 (1963-02-01), Bigelow
patent: 3174526 (1965-03-01), Von Linde
patent: 3885904 (1975-05-01), Feng
Favors Edward G.
HED Industries, Inc.
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