Gas burner controller with main valve delay after pilot flame li

Details Gas burner controller with main valve delay after pilot flame li Gas burner controller with main valve delay after pilot flame li

1995-02-27

1996-07-23

Dority, Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

Sensor of first burner controls second burner, e.g., pilot...

431 59, 431 51, F23Q 908

Patent

active

055384161

ABSTRACT:
A controller for a gas burner system compensates for the tendency of a flame rod sensor in the burner system to on occasion provide a spike in its signal on first lightoff of a pilot flame, by delaying the signal which causes opening of the burner system's main burner valve until the sensor signal has had a chance to reach to its normal level indicative of the presence of the pilot flame. This time varies from about 5 to 30 seconds.

REFERENCES:
patent: 3594107 (1971-07-01), Wilson
patent: 3915149 (1975-10-01), Kemp
patent: 4457692 (1984-07-01), Erdman
patent: 4789329 (1988-12-01), Bohan, Jr. et al.
patent: 5035607 (1991-07-01), Peterson
patent: 5439374 (1995-08-01), Jamieson

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