Flame surveying means in burner ignition

Details Flame surveying means in burner ignition Flame surveying means in burner ignition

1981-02-12

1983-09-13

Wayner, William E.

Combustion

Timer, programmer, retarder or condition responsive control

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

431 78, F23N 500

Patent

active

044039433

ABSTRACT:
A device for liquid fuel burners includes an electrically controlled valve which allows the feeding of fuel to the burner, the valve being provided with a retaining winding for permanently allowing the flow of fuel when the burner is in operation. The device further includes a combustion chamber pre-purger and a resistor with determines the end of the pre-purging. The device also includes a flame signaller means having a photo-resistance which responds to a preset low light intensity so as to reduce the current flowing through the resistor to such an extent that its heating becomes insufficient to cause the end of the pre-purging. The photo-resistance responds to a high light intensity by activating the retaining winding of the valve and giving the signals necessary for causing the burner to enter its regular operating mode.

REFERENCES:
patent: 4249884 (1981-02-01), Cade
patent: 4257759 (1981-03-01), Miles
patent: 4299557 (1981-11-01), Brouwer

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