Burner control system

Details Burner control system Burner control system

1975-02-03

1976-08-17

Favors, Edward G.

Combustion

Timer, programmer, retarder or condition responsive control

By combustion or combustion zone sensor

431 66, F23N 508

Patent

active

039751376

ABSTRACT:
A burner control circuit in which the flame of a high capacity burner is ignited by a spark or hot wire and ignition is sensed by a photocell positioned outside the flame and controlling a semiconductor current amplifier which controls the current in a series path through the solenoid of a fuel valve, a thermal time delay relay and a bridge rectifier energized by a transformer winding. The relay opens the series circuit a predetermined time after the transformer has been energized if ignition has not been achieved. The system using the burner is a high capacity heater having the burner positioned inside a plenum of an extended surface heat exchanger for heating a fluid to supply to a second heat exchanger, and energization of the control circuit for the ignition and flame sensing is controlled by the heat required by the first and/or second heat exchangers.

REFERENCES:
patent: 2840146 (1958-06-01), Ray
patent: 3537804 (1970-11-01), Walbridge
patent: 3741709 (1973-06-01), Clark
patent: 3770365 (1973-11-01), Lenski

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