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Dimpled/grooved face on a fuel injection nozzle body for flame stabilization and related method

United States Patent

August 20, 2013
View the Complete Patent at the US Patent & Trademark Office
A fuel injection head for a fuel nozzle used in a gas turbine combustor includes a substantially hollow body formed with an upstream end face, a downstream end face and a peripheral wall extending therebetween. A plurality of pre-mix tubes or passages extend axially through the hollow body with inlets at the upstream end face and outlets at the downstream end face. An exterior surface of the downstream end face is formed with three-dimensional surface features that increase a total surface area of the exterior surface as compared to a substantially flat, planar downstream end face.
Uhm; Jong Ho (Simpsonville, SC), Johnson; Thomas Edward (Greer, SC), Kim; Kwanwoo (Greer, SC), Zuo; Baifang (Simpsonville, SC)
General Electric Company (Schenectady, NY)
12/ 855,801
August 13, 2010
This invention was made with Government support under contract number DE-FC26-05NT42643 awarded by the Department of Energy. Accordingly, the Government has certain rights in this invention.