Ignition and flame monitoring device

Details Ignition and flame monitoring device Ignition and flame monitoring device

1985-10-07

1986-11-11

Focarino, Margaret A.

Combustion

Timer, programmer, retarder or condition responsive control

By combustion or combustion zone sensor

431 25, F23N 500

Patent

active

046220054

ABSTRACT:
An ignition and flame monitoring device in which the absence of flame between a pair of sparking electrodes energizes the primary coil of a transformer through an ignition control circuit to step up the voltage of the secondary coil thereof so as to develop a Zener diode into an avalanche breakdown. This causes a spark between the gap electrodes to ignite the flammable gas, building a flame which increases electrical conduction between the electrodes to transmit a flame signal causing a flame detection circuit to deenergize the primary transformer coil so as to stop the electrode spark.

REFERENCES:
patent: 4304545 (1981-12-01), Matthews
patent: 4405299 (1983-09-01), Serber
patent: 4413303 (1983-11-01), Cheary et al.
patent: 4519771 (1985-05-01), Six et al.
patent: 4552528 (1985-11-01), Gaiffier

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