Combustion – Timer – programmer – retarder or condition responsive control – Sensor of first burner controls second burner – e.g. – pilot...
Patent
1978-02-17
1980-12-30
Scott, Samuel
Combustion
Timer, programmer, retarder or condition responsive control
Sensor of first burner controls second burner, e.g., pilot...
431 47, 431255, 431256, 431257, 307 66, F23Q 908, F23Q 712, H02J 700
Patent
active
042420784
ABSTRACT:
An automatic ignition control system for controlling the pilot burners and main burners of fuel burning appliances so that these burners are ignited only upon demand is disclosed. The system consists of a main control unit which may be interconnected with conventional main and pilot burners or which may be connected with a new and novel burner specifically designed for the purpose. The main control unit is actuated by suitable thermostats or switches when burner operation is required and operates to open the pilot valve and activate a pilot igniter control circuit. The igniter control circuit may take several forms, depending upon the type of igniter used with the burner, and sensing means are provided to deactivate this igniter control circuit when a pilot flame is detected. If the pilot fails to ignite after a predetermined period of time, the main control deactivates the pilot solenoid and sounds an alarm. After ignition of the pilot, the main control unit activates the main burner valve and allows the main burner to be turned on. At the end of the burner usage, both the main and pilot valves are turned off, thereby conserving the fuel that is usually wasted through a continuously burning pilot burner.
REFERENCES:
patent: 2390172 (1945-12-01), Ray
patent: 3136355 (1964-06-01), Weber
patent: 3338288 (1967-08-01), Walker
patent: 3395968 (1968-08-01), Mobarry et al.
patent: 3574496 (1971-04-01), Hewitt
patent: 3596106 (1971-07-01), Raddi
patent: 3644074 (1972-02-01), Cade
patent: 3822039 (1974-07-01), Mori et al.
patent: 3938935 (1976-02-01), Engelbert
Nelson Hollis E.
Seely Donald G.
Leavitt John J.
Ratliff, Jr. Wesley S.
Scott Samuel
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