Intermittent pilot igniter and valve controller for gas burner

Details Intermittent pilot igniter and valve controller for gas burner Intermittent pilot igniter and valve controller for gas burner

1975-06-26

1976-10-19

Favors, Edward G.

Combustion

Timer, programmer, retarder or condition responsive control

Sensor of first burner controls second burner, e.g., pilot...

431 80, F23N 510

Patent

active

039868133

ABSTRACT:
A system for controlling the pilot and main burner gas valves of a gas furnace or the like, including a pilot spark igniter and a pilot flame sensor. A relay having a first standby mode providing power to the spark igniter circuit when the thermostat switch is closed and the pilot valve solenoid is energized, and a second operating mode disconnecting power from the spark igniter circuit and providing power to the main valve solenoid when a flame is sensed at the pilot burner. A fast responding, stable and failsafe circuit for operating the relay utilizing a 24 volt supply, with a 48 volt supply provided only for the flame sensor.

REFERENCES:
patent: 2924270 (1960-02-01), Deziel
patent: 3519376 (1970-07-01), Dietz
patent: 3704980 (1972-12-01), Lokkart

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