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US 6,279,323 B1Granted
Low emissions combustor
AssigneeGeneral Electric Company
InventorsJoseph D. Monty, John C. Jacobson
Life of this patent
Estimating the term…
Abstract
A combustor includes outer and inner liners joined at one end to an annular dome. A swirl cup is mounted to the dome and includes a flare cone extending therethrough. The flare cone has an obtuse flare angle for discharging fuel in a wide spray from an outlet of the cone. A flared beat shield surrounds the cone, and extends in part aft from the cone outlet, and is offset in part forwardly from the cone outlet to define a radially outwardly facing step.
Claims20
A gas turbine engine combustor comprising:
- radially outer and inner annular liners joined at forward ends to an annular dome and spaced radially apart at aft ends to define an annular outlet;
- a swirl cup mounted to said dome and including a flare cone extending through said dome with an obtuse first flare angle for discharging fuel in a wide spray from an outlet thereof;
- a flared heat shield having a tubular inlet end surrounding said flare cone and extending in major part aft from said outlet thereof with an obtuse second flare angle offset forwardly from said first flare angle at said cone outlet to define a radially outwardly facing step protruding said cone outlet axially aft from said heat shield between said first and second cone angles thereof;
- and
- said flare cone and heat shield being discrete components unattached at said step to permit unrestrained differential movement therebetween.
2 more elements
A gas turbine engine combustor comprising:
- radially outer and inner annular liners joined at forward ends to an annular dome and spaced radially apart at aft ends to define an annular outlet;
- each of said liners including first and second respective rows of dilution holes axially spaced apart between said dome and said outlet;
- a swirl cup mounted to said dome and including a flare cone extending through said dome with an obtuse first flare angle for discharging fuel in a wide spray from an outlet thereof;
- a flared heat shield having a tubular inlet end surrounding said flare cone and extending in major part aft from said outlet thereof with an obtuse second flare angle offset forwardly from said first flare angle to define a radially outwardly facing step protruding said cone outlet axially aft between said first and second flare angles thereof;
- and
- said flare cone and heat shield being discrete components unattached at said step to permit unrestrained differential movement therebetween.
3 more elements
Dependencies are inferred from the claim text.