Process and circuit for controlling a gas burner

Details Process and circuit for controlling a gas burner Process and circuit for controlling a gas burner

1996-10-24

1999-07-20

Price, Carl D.

Combustion

Process of combustion or burner operation

Controlling or proportioning feed

431 25, 431 18, 431 78, 431 75, F23N 512

Patent

active

059248599

ABSTRACT:
A process for controlling a gas blower burner in which an ionization electrode sends an electrical variable derived from the combustion temperature or the lambda value to a control circuit, which compares this variable with a selected electrical set point and adjusts the gas-to-air ratio (lambda value) to a corresponding lambda set point. To compensate the effect of a condition-dependent change in the proportionality between the lambda value and the electrical measured variable derived from it on the control in such a way that the desired lambda set point will be maintained, a calibration cycle is run from time to time. The lambda value is reduced from a value of >1 during this cycle. The maximum obtained at lambda=1 is stored. The electrical set point is adjusted with this maximum.

REFERENCES:
patent: 4588372 (1986-05-01), Torborg

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