Burner control apparatus with stabilized pilot flame timing inte

Details Burner control apparatus with stabilized pilot flame timing inte Burner control apparatus with stabilized pilot flame timing inte

1977-12-27

1981-02-10

Dority, Jr., Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

Control of purger, of scavenger or of combustion start-up...

431 46, 431 78, F23N 500

Patent

active

042498848

ABSTRACT:
Burner control apparatus includes a control device for actuating an ignition control means, and a timing circuit for providing an ignition timing interval which extends beyond flame detection for a timed interval. The timing circuit is actuated in response to a request for burner operation and the control device is energized in response to the actuated timing circuit. The control device is maintained energized if a signal from the flame sensor is received before the end of the ignition timing interval, and the control device is deenergized and lockout circuitry is energized in the absence of a signal from the flame sensor. Main fuel supply is delayed for the timed interval to provide pilot flame stabilization.

REFERENCES:
patent: 3008517 (1961-11-01), Pierz
patent: 3223138 (1965-12-01), Brown
patent: 3266551 (1966-08-01), Guiffrida
patent: 3393037 (1968-07-01), Guiffrida et al.
patent: 3644074 (1972-02-01), Cade
patent: 3840322 (1974-10-01), Cade

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