초록 ▼

A combustor for generating a hot gas stream by the combustion of fuel in a pressurized airstream is disclosed including a generally toroidal-shaped combustion chamber of relatively short axial length, an annular orifice providing for the entry of a main airstream into the combustion chamber and a pr

A combustor for generating a hot gas stream by the combustion of fuel in a pressurized airstream is disclosed including a generally toroidal-shaped combustion chamber of relatively short axial length, an annular orifice providing for the entry of a main airstream into the combustion chamber and a premixing chamber for generating and directing a vapor phase air-fuel premixture into the entering main airstream to form a combustible mixture for burning in the combustion chamber. In a preferred form, the mixture burns along a generally toroidal-helical gas flow path. The combustor is particularly suited for use in a gas turbine engine.

대표청구항 ▼

A combustor for generating a hot gas stream by the combustion of fuel in a pressurized airstream, said combustor comprising: a housing; an arcuate combustor liner mounted within said housing in spaced relation thereto effective to constrain the gas flow to form a generally toroidal-shaped combustion

A combustor for generating a hot gas stream by the combustion of fuel in a pressurized airstream, said combustor comprising: a housing; an arcuate combustor liner mounted within said housing in spaced relation thereto effective to constrain the gas flow to form a generally toroidal-shaped combustion zone; an annular air-fuel premixing chamber defined by a first annular baffle and a second annular baffle disposed radially inwardly thereof, said chamber having an upstream end and opening downstream into said combustion zone through an opening defined by said baffles; said first baffle comprising a stationary member and a sleeve member movable relative to said stationary member, each of said members having a plurality of spaced openings therein angled generally tangentially to the inner surface thereof, said sleeve member being movable between a full open position wherein said openings are aligned, a closed position wherein said openings are offset and a plurality of partially open positions therebetween, thereby controlling the flow of air therethrough; means for injecting fuel into said premixing chamber; means integral with said sleeve member for moving said sleeve member relative to said stationary member; a compressed air inlet plenum surrounding said premixing chamber and separated therefrom by said first baffle, said plenum communicating with said premixing chamber through said openings to provide for the entry of air to generate a vortical flow of a substantially homogeneous vapor phase air-fuel premixture axially of said premixing chamber; said plenum further communicating with said combustion zone through an orifice outwardly circumferential of said sleeve member at the downstream end thereof and defined by said sleeve member and said liner providing for the entry of a main airstream into said combustion zone adjacent to the outer periphery thereof; the vortical discharge from said premixing chamber entering said main airstream generally tangentially thereto and being mixed therein to generate a combustible air-fuel mixture for burning in said combustion zone.