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Monolithic fuel injector and related manufacturing method

United States Patent

May 22, 2012
View the Complete Patent at the US Patent & Trademark Office
A monolithic fuel injection head for a fuel nozzle includes a substantially hollow vesicle body formed with an upstream end face, a downstream end face and a peripheral wall extending therebetween, an internal baffle plate extending radially outwardly from a downstream end of the bore, terminating short of the peripheral wall, thereby defining upstream and downstream fuel plenums in the vesicle body, in fluid communication by way of a radial gap between the baffle plate and the peripheral wall. A plurality of integral pre-mix tubes extend axially through the upstream and downstream fuel plenums in the vesicle body and through the baffle plate, with at least one fuel injection hole extending between each of the pre-mix tubes and the upstream fuel plenum, thereby enabling fuel in the upstream plenum to be injected into the plurality of pre-mix tubes. The fuel injection head is formed by direct metal laser sintering.
Ziminsky; Willy Steve (Greenville, SC), Johnson; Thomas Edward (Greenville, SC), Lacy; Benjamin (Greenville, SC), York; William David (Greenville, SC), Stevenson; Christian Xavier (Greenville, SC)
General Electric Company (Schenectady, NY)
12/ 555,129
September 8, 2009
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.