Patent ID: 8104286
Filing Date: 2012-01-31
Classification: F23R,Y10T

Abstract:
1. A method for fabricating a fuel nozzle, said method comprising: fabricating a swirler assembly that includes a shroud, a hub, and a plurality of vanes extending between the shroud and the hub, wherein each of the plurality of vanes includes a concave pressure sidewall and an opposite convex suction sidewall that is coupled to the pressure sidewall at a leading edge and at an axially-spaced trailing edge; forming at least one suction side fuel injection orifice adjacent to the leading edge in the suction sidewall, wherein the orifice extends from a first fuel supply passage to the suction sidewall such that a fuel injection angle is formed with respect to the suction sidewall; and forming at least one pressure side fuel injection orifice in the pressure sidewall that extends from at least one of the first fuel supply passage and a second fuel supply passage to the pressure sidewall and the at least one pressure side fuel injection orifice is configured to discharge fuel in a downstream direction that is substantially tangential to the trailing edge.