Burner control system

Details Burner control system Burner control system

1977-07-13

1979-02-20

Dority, Jr., Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

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

431 74, F23N 520

Patent

active

041404742

ABSTRACT:
A burner control system including a valve for controlling the flow of fuel to a burner, a flame sensor for producing a flame signal in response to the presence of flame at the burner, a start-up circuit for producing a start-up signal, a control circuit for opening the valve to establish fuel flow in response to either the flame or start-up signal, and a timing capacitor first delays the generation of the start-up signal while charging during a predetermined purge period after energization of the start-up circuit and then terminates the start-up signal while discharging during a predetermined ignition period. A monostable electronic switch produces the start-up signal in response to the charge level on the timing capacitor and a valve initiator for opening the valve is powered by energy discharged by the timing capacitor during the ignition period.

REFERENCES:
patent: 3270799 (1966-09-01), Pinckaers
patent: 3510236 (1970-05-01), Potts
patent: 3853455 (1974-12-01), Riordan

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