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US 8,281,597 B2Granted
Cooled flameholder swirl cup
AssigneeGeneral Electric Company
InventorsShui-Chi Li, Mark Anthony Mueller, Michael Louis Vermeersch, Timothy James Held
Life of this patent
Estimating the term…
Abstract
A combustor swirl cup includes coaxial inner and outer swirlers separated by a tubular centerbody. The centerbody includes a bypass inlet surrounding the inner swirler and diverges aft along a perforate inner nozzle to terminate at an annular flameholder. An impingement ring is spaced forward from the flameholder in flow communication with the bypass inlet for receiving cooling air therefrom to impingement cool the flameholder.
Claims18
A swirl cup comprising:
- an annular inner swirler having a row of pilot swirl vanes and cooperating pilot fuel injector;
- an annular outer swirler having a row of main swirl vanes and a cooperating main fuel injector;
- a tubular centerbody disposed radially between said inner and outer swirlers, and coaxial therewith;
- said centerbody including an annular bypass inlet surrounding said inner swirler and diverging aft along a perforate pilot nozzle to terminate at an annular flameholder;
- and
- said centerbody further including an impingement ring spaced forwardly from said flameholder in flow communication with said bypass inlet for receiving cooling air therefrom, said impingement ring including a plurality of impingement holes configured to direct cooling air at said flameholder and being spaced radially around said pilot nozzle;
- and an annular outer manifold extending in fluid communication between said bypass inlet and said impingement ring, and an annular inner plenum disposed coaxially inside said outer manifold and around said pilot nozzle, and terminating axially between said impingement ring and said flameholder.
4 more elements
A combustor swirl cup comprising:
- coaxial inner and outer swirlers separated by a tubular centerbody radially therebetween;
- said centerbody including an annular bypass inlet surrounding said inner swirler and diverging aft along a perforate inner nozzle to terminate at an annular flameholder;
- and
- said centerbody further including an impingement ring spaced forwardly from said flameholder in flow communication with said bypass inlet for receiving cooling air therefrom, said impingement ring including a plurality of impingement holes configured to direct the cooling air at said flameholder and being spaced radially around said inner nozzle;
- and an annular outer manifold extending in fluid communication between said bypass inlet and said impingement ring, and an annular inner plenum disposed coaxially inside said outer manifold and around said inner nozzle, and terminating axially between said impingement ring and said flameholder.
2 more elements
Dependencies are inferred from the claim text.