초록 ▼

A gas turbine engine carburetor including an annular swirler and a new and improved fuel injector cooperating therewith is disclosed which is effective for providing low BTU gaseous fuel to a combustor. The swirler includes a plurality of circumferentially spaced swirler vanes effective for channeli

A gas turbine engine carburetor including an annular swirler and a new and improved fuel injector cooperating therewith is disclosed which is effective for providing low BTU gaseous fuel to a combustor. The swirler includes a plurality of circumferentially spaced swirler vanes effective for channeling air along an annular inner surface of the swirler. The fuel injector includes a hollow injector tip having an aft portion including a plurality of circumferentially spaced outlet apertures disposed in an outer surface thereof. The outer surface is aligned obliquely to a longitudinal centerline axis of the injector tip and the swirler.

대표청구항 ▼

A carburetor for a gas turbine engine for mixing air with a combustible, gaseous fuel supplied through an inlet, comprising: an annular swirler having a first longitudinal centerline axis, an annular inner surface disposed coaxially with respect to said first axis, and a plurality of circumferential

A carburetor for a gas turbine engine for mixing air with a combustible, gaseous fuel supplied through an inlet, comprising: an annular swirler having a first longitudinal centerline axis, an annular inner surface disposed coaxially with respect to said first axis, and a plurality of circumferentially spaced swirler vanes fixedly connected to an upstream end of said inner surface, said swirler vanes being positioned to channel air over said inner surface; and a fuel injector for injecting only said gaseous fuel, said fuel injector including a hollow injector tip formed as a single annular shell having a second longitudinal centerline axis, said injector tip comprising a substantially cylindrical forward portion including said inlet for receiving said gaseous fuel therethrough at an inlet velocity, and an aft portion having a decreasing cross sectional area in the downstream direction, said tip aft portion having an outer surface directly facing said swirler inner surface and being obliquely aligned at an angle A with respect to said second axis, said angle A being greater than 0 degrees and less than 90 degrees, and said tip aft portion including a plurality of circumferentially spaced outlet apertures disposed in said outer surface for discharging said gaseous fuel therethrough, said outlet apertures directly facing said swirler inner surface and being sized relative to said inlet to reduce the axial velocity of said discharged gaseous fuel below said inlet velocity, and said swirler vanes and said outlet apertures being positioned relative to each other to cause said air channeled over said swirler inner surface to mix substantially only with said discharged gaseous fuel.