Combustion – Timer – programmer – retarder or condition responsive control – By combustion or combustion zone sensor
Reexamination Certificate
2005-05-12
2011-11-29
Denion, Thomas (Department: 3748)
Combustion
Timer, programmer, retarder or condition responsive control
By combustion or combustion zone sensor
C431S076000, C431S077000, C431S024000, C431S025000
Reexamination Certificate
active
08066508
ABSTRACT:
A signal generation system for flame ignition and sensing. The ignition signal generation is adaptive for improving flame ignition while eliminating excess energy usage. High voltage signals for flame sensing may also be provided. If more energy or speed is needed for ignition signal generation, then the flame sensing signal generation portion may be disabled to increase the amount of available energy. Adaptation for ignition signal generation may be guided by the results of flame sensing. The flame sensing voltage may be regulated based on the flame current strength. The flame current may be controlled within an optimum range to reduce rod contamination rate and yet provide reliable flame sensing when the rod contamination built up. The adaptation may be algorithmic-based with the facilitation of a microcontroller. The system may provide the high voltage signals from a low voltage power supply, such as that of 24 VAC.
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Chian Brent
Nordberg Timothy J.
Bernstein Daniel
Denion Thomas
Honeywell International , Inc.
Seager Tufte & Wickham LLC
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