Combustion – Timer – programmer – retarder or condition responsive control – By condition of burner feed or feed means
Reexamination Certificate
2006-01-10
2006-01-10
Basichas, Alfred (Department: 3749)
Combustion
Timer, programmer, retarder or condition responsive control
By condition of burner feed or feed means
C431S018000
Reexamination Certificate
active
06984122
ABSTRACT:
Combustion control systems for maintaining a selected fuel-air ratio for a combustion apparatus supplied with air at a substantially constant volumetric rate are improved by means for adjusting the flow rate of fuel in relation to temperature fluctuations of the air. A temperature sensor positioned in the air stream before it mixes with the fuel is connected to a converter which transmits converted temperature signals from the sensor as adjustments of a remote control-flow regulator in the fuel line or in the air stream. Thus, if the flow regulator is in the fuel line, a drop in air temperature will cause an increase of the fuel flow rate. Conversely, a rise in air temperature will result in a reduced fuel flow rate. If the flow regulator is in the air stream, a drop in air temperature will cause a decrease in the air flow rate, while a rise in air temperature will result in increased air flow rate. The invention is also applicable to temperature variations of the fuel by using the three basic components: a temperature sensor, a converter and a remote control-flow regulator.
REFERENCES:
patent: 4249886 (1981-02-01), Bush
patent: 4613072 (1986-09-01), Kikuchi et al.
patent: 5277134 (1994-01-01), Schlessing et al.
patent: 6095793 (2000-08-01), Greeb
Morales Luis H.
Nickeson Robert W.
Sullivan John D.
Alzeta Corporation
Basichas Alfred
DLA Piper Rudnick Gray Cary US LLP
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