Combination control with high/low pilot gas flow

Details Combination control with high/low pilot gas flow Combination control with high/low pilot gas flow

1982-04-09

1983-11-08

Scott, Samuel

Combustion

Timer, programmer, retarder or condition responsive control

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

431 82, 431 83, 431 53, 137599, F23Q 908

Patent

active

044139756

ABSTRACT:
A combination control for main and pilot burners of gas burner apparatus wherein a thermostatically controlled redundant simultaneously controls the supply of gas to pilot burner and main burner gas outlets. A pilot flow passage has a first branch passageway which supplies a restricted low pilot supply of gas independently of the redundant valve for producing a pilot burner flame of a small standby size when the redundant valve is closed. The pilot flow passage further includes a second branch passageway communicating with the redundant valve for supplying an increased high pilot supply of gas to produce a pilot flame of a larger ignition size when the redundant valve is open. A check valve in the second branch passageway blocks gas flow therethrough from the first branch passageway when the redundant valve is closed.

REFERENCES:
patent: 2871930 (1959-02-01), Drow
patent: 2953198 (1960-09-01), Hajny
patent: 3166248 (1965-01-01), Fleer
patent: 3405999 (1968-10-01), Riehl
patent: 4009861 (1977-03-01), Hirst

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