초록 ▼

A tangential air entry fuel nozzle has a longitudinal axis and two cylindrical-arc scrolls with the centerline of each offset from that of the other. Overlapping ends of these scrolls form an air inlet slot therebetween for the introduction of an air/fuel mixture into the fuel nozzle. A combustor-en

A tangential air entry fuel nozzle has a longitudinal axis and two cylindrical-arc scrolls with the centerline of each offset from that of the other. Overlapping ends of these scrolls form an air inlet slot therebetween for the introduction of an air/fuel mixture into the fuel nozzle. A combustor-end endplate has a central opening to permit air and fuel to exit into a combustor, while at the opposite end another endplate blocks the nozzle flow area. The scrolls are secured between these endplates. A centerbody is located between the scrolls coaxial with the axis. The centerbody has a base which includes at least one air supply port extending therethrough, and an internal passageway. The centerbody includes a frustum portion and aerodynamic ramps that prevent flow reversal and flame stabilization between the endplates.

대표청구항 ▼

[ We claim:] [1.] A fuel nozzle assembly for use in a gas turbine engine, comprising:a centerbody includinga longitudinal axis,a base, anda radially outer surface including a frustum portion defining the outer surface of a frustum that is coaxial with the longitudinal axis and flares toward the base

[ We claim:] [1.] A fuel nozzle assembly for use in a gas turbine engine, comprising:a centerbody includinga longitudinal axis,a base, anda radially outer surface including a frustum portion defining the outer surface of a frustum that is coaxial with the longitudinal axis and flares toward the base;a scroll swirler havingfirst and second endplates, said first endplate in spaced relation to said second endplate, said second endplate having a combustor inlet port extending therethrough, said inlet port coaxial with said axis and including a convergent surface, a discharge surface, and a throat therebetween,at least two cylindrical-arc scroll members, each scroll member defining a body of partial revolution about a centerline, each of said scroll members extending from said first endplate to said second endplate and spaced uniformly about the axis thereby defining a mixing zone therebetween, each of said scroll members in spaced relation to each of the other scroll members, each of said centerlines located within said mixing zone, each of said centerlines in spaced relation to, equidistant from, and parallel to said axis, thereby defining inlet slots extending parallel to said axis between each pair of adjacent scroll members for introducing combustion air into said mixing zone, each of said scroll members including a fuel conduit for introducing fuel into combustion air introduced through one of said inlet slots;wherein said base is connected to said first endplate and said frustum portion extends into said combustor inlet port.