Patent ID: 8186164

Claim:
A fuel injector for a gas turbine engine comprising: a mounting flange; a stem being generally L-shaped having a leg and a foot extending from a proximal portion of the leg at the mounting flange to a distal portion of the foot; a nozzle proximate the stem distal portion; a first passageway through the stem and extending from a first inlet to a first outlet at the nozzle, the first outlet comprising a first plurality of apertures; a second passageway through the stem and extending from a second inlet to a second outlet at the nozzle, the second outlet comprising a second plurality of apertures, generally inboard of the first plurality of apertures; and a third passageway through the stem and extending from a third inlet to a third outlet at the nozzle, the third outlet comprising at least one third aperture, generally inboard of the first plurality of apertures, wherein: along major portions of respective lengths, the first, second, and third passageways are within respective first, second and third conduits; within the leg portion of a heat shield, a plurality of collar plates each have first, second, and third apertures accommodating leg portions of the first, second, and third conduits, respectively and an outer periphery in facing proximity to an interior surface of the heat shield leg portion; the first, second, and third conduits each have a foot portion; the second and third conduit foot portions are held spaced apart by spacers secured to one of the two so as to permit differential thermal expansion; and the third conduit foot portion and heat shield foot portion are held spaced apart by spacers secured to one of the two so as to permit differential thermal expansion.