Method and apparatus for fuel/air control of surface combustion

Details Method and apparatus for fuel/air control of surface combustion Method and apparatus for fuel/air control of surface combustion

1992-01-17

1993-06-29

Dority, Carroll B.

Combustion

Process of combustion or burner operation

Controlling or proportioning feed

431 42, 431 59, 431 79, 431 76, F23N 508

Patent

active

052228878

ABSTRACT:
A fuel/air control system for use in controlling the operation of a surface combustion burner includes a photodetector that provides electrical signal equivalents of burner flame emission to a controller. The controller simultaneously receives signals indicative of the fuel/air mixture. The controller fits the emission and fuel air mixture data to a fourth order polynomial. Thereafter, the mathematical inflection point is computed and the corresponding fuel/air mixture is determined. The controller then generates command signals to adjust and maintain the burner at the inflection point fuel/air mixture. Multiple burner control can also be achieved with the present fuel/air control system without the need to sample exhaust gas.

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