Gas flow controller

Details Gas flow controller Gas flow controller

1995-09-06

1998-07-14

Jones, Larry

Combustion

Timer, programmer, retarder or condition responsive control

By condition of burner feed or feed means

431 12, 431 59, 431 76, 137 88, F23N 524

Patent

active

057794669

ABSTRACT:
A gas flow rate controller arranged between a gas burner and a flammable gas source and a combustion-assisting gas source includes a gas flow rate setting means for producing a flow rate setting signal corresponding to a preset flow rate of gas flowing toward the gas burner. A ratio setting means produces a flammable gas setting reference signal and a combustion-assisting gas flow rate setting signal at a predetermined ratio, based on the flow rate setting signal produced by the gas flow rate setting means. The flow rate of the flammable gas detected is compared with the flammable gas setting reference signal produced and the flow rate of the combustion-assisting gas detected is compared with the combustion-assisting gas flow rate setting reference signal produced. Control valves are feedback controlled so that any differences therebetween will become zero. Thus the mixing ratio between the gases is kept constant even if the gas pressures change.

REFERENCES:
patent: 4605034 (1986-08-01), Urushida
patent: 4838295 (1989-06-01), Smith et al.

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