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Premixed direct injection nozzle

United States Patent

February 15, 2011
View the Complete Patent at the US Patent & Trademark Office
An injection nozzle having a main body portion with an outer peripheral wall is disclosed. The nozzle includes a plurality of fuel/air mixing tubes disposed within the main body portion and a fuel flow passage fluidly connected to the plurality of fuel/air mixing tubes. Fuel and air are partially premixed inside the plurality of the tubes. A second body portion, having an outer peripheral wall extending between a first end and an opposite second end, is connected to the main body portion. The partially premixed fuel and air mixture from the first body portion gets further mixed inside the second body portion. The second body portion converges from the first end toward said second end. The second body portion also includes cooling passages that extend along all the walls around the second body to provide thermal damage resistance for occasional flame flash back into the second body.
Zuo; Baifang (Simpsonville, SC), Johnson; Thomas Edward (Greer, SC), Lacy; Benjamin Paul (Greer, SC), Ziminsky; Willy Steve (Simpsonville, SC)
General Electric Company (Schenectady, NY)
12/ 245,266
October 3, 2008
FEDERAL RESEARCH STATEMENT This invention was made with Government support under Contract No. DE-FC26-05NT42643, awarded by the Department of Energy. The Government has certain rights in the invention.