Burner control system

Details Burner control system Burner control system

1973-09-17

1976-05-04

Dority, Jr., Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

With test circuit checking or analyzing flame sensing...

251131, F23N 524

Patent

active

039543838

ABSTRACT:
A burner control system in which signals indicating the condition at various locations within the system are applied to a control circuit in the form of pulse trains, causing a continuous alternation of state of solid state switching elements therein. The system actuates a switch to open a fuel valve only when the level of the control circuit output signal is alternating, indicating that the said switching elements are operative. A comparison circuit compares the control circuit output signal with a signal denoting the condition of the fuel valve, to ensure proper operation of the fuel valve switch.

REFERENCES:
patent: 3202976 (1965-08-01), Rowell
patent: 3324927 (1967-06-01), Staring
patent: 3541549 (1970-11-01), Graves
patent: 3554680 (1971-01-01), Malavasi
patent: 3684423 (1972-08-01), Bryant
patent: 3781161 (1973-12-01), Schuss
patent: 3849056 (1974-11-01), Schuss

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