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Coaxial fuel and air premixer for a gas turbine combustor

United States Patent

May 21, 2013
View the Complete Patent at the US Patent & Trademark Office
An air/fuel premixer comprising a peripheral wall defining a mixing chamber, a nozzle disposed at least partially within the peripheral wall comprising an outer annular wall spaced from the peripheral wall so as to define an outer air passage between the peripheral wall and the outer annular wall, an inner annular wall disposed at least partially within and spaced from the outer annular wall, so as to define an inner air passage, and at least one fuel gas annulus between the outer annular wall and the inner annular wall, the at least one fuel gas annulus defining at least one fuel gas passage, at least one air inlet for introducing air through the inner air passage and the outer air passage to the mixing chamber, and at least one fuel inlet for injecting fuel through the fuel gas passage to the mixing chamber to form an air/fuel mixture.
York; William D. (Greer, SC), Ziminsky; Willy S. (Simpsonville, SC), Lacy; Benjamin P. (Greer, SC)
General Electric Company (Schenectady, NY)
12/ 389,994
February 20, 2009
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH DEVELOPMENT This invention was made with Government support under Contract No. DE-FC26-05NT42643 awarded by the United States Department of Energy. The Government has certain rights in the invention.