Control system for blue-flame oil burner

Details Control system for blue-flame oil burner Control system for blue-flame oil burner

1980-10-01

1983-01-25

Scott, Samuel

Combustion

Timer, programmer, retarder or condition responsive control

Sensor of electrical condition or temperature of electrical...

431 71, 431 74, 431 79, 340579, 307117, F23N 5000

Patent

active

043701256

ABSTRACT:
A control system for fluid fuel burners, particularly for blue-flame oil burners, utilizes flame conduction to control energizing of the light emitting portion of an optical coupler. Circuit means including the light responsive portion of the optical coupler is effective, in the presence of a predetermined level of illumination from the light emitting portion which occurs in the absence of a burner flame, to enable flow of a combustible fuel-air mixture and energizing of ignition means, and, in the subsequent absence of the predetermined level of illumination when burner flame exists, to terminate energizing of the ignition means and to enable continued flow of the combustible mixture. The control system further includes means for reducing the rate and level of illumination of the light emitting portion so that it requires a predetermined time period for the light emitting portion to be energized to the predetermined level of illumination. This predetermined time period prevents initial energizing of the system in the event of a false flame indication, and enables uninterrupted system operation in the event of a momentary loss of flame conduction.

REFERENCES:
patent: 3732433 (1973-05-01), Lourigan
patent: 3767354 (1973-10-01), Wright
patent: 3947219 (1976-03-01), Santo
patent: 4024412 (1977-05-01), MacAskill
patent: 4231732 (1980-11-01), Newport et al.
patent: 4242081 (1980-12-01), Donnelly et al.
patent: 4278419 (1981-07-01), Bechtel et al.

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