Method and apparatus for optimizing fuel-to-air ratio in the com

Details Method and apparatus for optimizing fuel-to-air ratio in the com Method and apparatus for optimizing fuel-to-air ratio in the com

1990-07-25

1991-08-06

Dority, Carroll B.

Combustion

Process of combustion or burner operation

Controlling or proportioning feed

431 75, 431 79, F23N 300

Patent

active

050372912

ABSTRACT:
A method and apparatus to optimize the proportion of gaseous fuel and air supplied to a radiant burner employed in a heating appliance. With the flow rate of the gaseous fuel supply held constant, the flow rate of the air supply is adjusted to change the relative proportion of air and fuel in the mixture to attain an optimum value for burner combustion, i.e. a value where the proportion of air is slightly greater than the stoichiometric ratio. The invention employs a sensor to measure the intensity of the radiation emitted by the burner while the air supply to the burner is varied. From the measurements obtained, control parameters are derived which are then applied to set the air supply flow rate to a level that results in the optimum proportion of air and fuel in the mixture.

REFERENCES:
patent: 4043742 (1977-08-01), Egan et al.
patent: 4435149 (1984-03-01), Astheimer
patent: 4533315 (1985-08-01), Nelson
patent: 4927350 (1990-05-01), Zabielski
patent: 4934926 (1990-06-01), Yamazaki

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