Perforated flame holder with adjustable fuel nozzle
AssigneeClearsign Combustion Corporation
InventorsDOUGLAS W. KARKOW, JOSEPH COLANNINO, JAMES K. DANSIE, JESSE DUMAS, DONALD KENDRICK, CHRISTOPHER A. WIKLOF
Life of this patent
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Abstract
A combustion system includes a perforated flame holder, an oxidant source, and an adjustable fuel nozzle. The oxidant source outputs oxidant. The adjustable fuel nozzle outputs fuel onto the perforated flame holder. The perforated flame holder supports a combustion reaction of the fuel and oxidant within the perforated flame holder. The position of the adjustable nozzle relative to the perforated flame holder can be adjusted to achieve selected characteristics of the combustion reaction within the perforated flame holder.
Claims45
A combustion system comprising:
- an oxidant source configured to output oxidant into a combustion volume;
- an adjustable fuel nozzle configured to output the fuel into the combustion volume;
- and
- a perforated flame holder positioned in the combustion volume to receive the fuel from the adjustable fuel nozzle and to support a combustion reaction of the fuel and an oxidant within the perforated flame holder, the adjustable fuel nozzle being configured to extend toward and retract from the perforated flame holder.
(canceled)
A method comprising:
- outputting fuel and oxidant from an adjustable fuel nozzle onto a perforated flame holder;
- supporting a combustion reaction of the fuel and oxidant within the perforated flame holder;
- and
- adjusting a position of the adjustable fuel nozzle relative to the perforated flame holder.
A method comprising:
- outputting a first flow of fuel from an adjustable fuel nozzle;
- preheating a perforated flame holder to a threshold temperature by supporting a preheating flame of the first flow of fuel near the perforated flame holder;
- retracting the adjustable fuel nozzle from the perforated flame holder after the perforated flame holder has been preheated to the threshold temperature;
- outputting a second flow of fuel from the adjustable fuel nozzle onto the perforated flame holder after retracting the adjustable fuel nozzle from the perforated flame holder;
- and
- supporting a combustion reaction of the second flow of fuel within the perforated flame holder.
Dependencies are inferred from the claim text.