Combustion – Process of combustion or burner operation – Flame shaping – or distributing components in combustion zone
Patent
1977-08-26
1980-05-27
Moore, Richard E.
Combustion
Process of combustion or burner operation
Flame shaping, or distributing components in combustion zone
F23C 500
Patent
active
042048303
ABSTRACT:
When a burner is supplied with preheated air, the temperature and density of the preheated air may vary during operation of the burner. When the density of the air supplied to a burner varies, it is necessary to vary the rate at which fuel is supplied to the burner in order to maintain a predetermined air-fuel ratio. To effect a variation in fuel flow with burner air density, the present invention utilizes a secondary air flow to simulate the heated flow of air to the burner. The flow rate of the secondary air varies in a manner which is a direct function of variations in the rate of flow of the heated burner air. Changes in the rate of flow of the secondary air are sensed at a predetermined reference temperature. The sensed variations in the secondary air flow are utilized to effect a corresponding change in the rate of fuel flow to maintain a constant air-fuel ratio.
REFERENCES:
patent: 2366170 (1945-01-01), Bates
patent: 2780414 (1957-02-01), De Heer
patent: 2866602 (1958-12-01), Dailey, Jr. et al.
patent: 3388862 (1968-06-01), Gabrielson
patent: 3407022 (1968-10-01), Andrews et al.
patent: 3424378 (1969-01-01), Martin
patent: 3493005 (1970-02-01), Kakegowa
Freas Mark S.
Jones William M.
Moore Richard E.
The North American Manufacturing Company
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