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US 10,066,835 B2Granted
Combustion system with flame location actuation
AssigneeClearsign Combustion Corporation
InventorsDouglas W. Karkow, Joseph Colannino, Igor A. Krichtafovitch, Robert E. Breidenthal, Christopher A. Wiklof
Life of this patent
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Abstract
A combustion system includes an electrically actuated flame location control mechanism.
Claims33
A combustion system with flame location control, comprising:
- a fuel nozzle configured to output a fuel stream;
- an igniter configured to selectably support an igniter flame proximate to a path corresponding to the fuel stream to cause the fuel stream to support a combustion reaction at a first flame location corresponding to the igniter flame during a first time interval;
- and
- a distal flame holder configured to hold the combustion reaction at a second flame location defined by the distal flame holder during a second time interval, different than the first time interval, during which the igniter does not support the igniter flame.
1 more element
A combustion system, comprising:
- a fuel nozzle configured to emit a main fuel stream along a fuel stream path;
- a distal flame holder positioned to subtend the fuel stream path a second distance from the fuel nozzle and configured to hold a main combustion reaction supported by the main fuel stream emitted from the fuel nozzle when the distal flame holder is heated to an operating temperature;
- and
- an igniter configured to selectively support an igniter flame positioned to ignite the main fuel stream to maintain ignition of a preheat flame between the nozzle and the distal flame holder at a first distance less than the second distance from the nozzle.
1 more element
A method of operating a combustion system, comprising:
- emitting, from a fuel nozzle, a main fuel stream toward a distal flame holder;
- preheating the distal flame holder by supporting an igniter flame in a position to fully ignite the main fuel stream and to hold a resulting preheat flame between the fuel nozzle and the distal flame holder;
- and
- igniting a distal combustion reaction at the distal flame holder once the distal flame holder has reached an operating temperature.
1 more element
Dependencies are inferred from the claim text.