US 11,788,725 B2
Trapped vortex combustor for a gas turbine engine with a driver airflow channel
Beverly Stephenson Duncan, West Chester, OH (US); Steven Joseph Lohmueller, Reading, OH (US); and Eric John Stevens, Mason, OH (US)
Assigned to GENERAL ELECTRIC COMPANY, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Dec. 6, 2021, as Appl. No. 17/542,900.
Application 17/542,900 is a division of application No. 15/584,057, filed on May 2, 2017, granted, now 11,262,073.
Prior Publication US 2022/0090788 A1, Mar. 24, 2022
Int. Cl. F23R 3/06 (2006.01); F23R 3/00 (2006.01); F23R 3/60 (2006.01); F23R 3/58 (2006.01); F23R 3/50 (2006.01); F23R 3/10 (2006.01); F23R 3/12 (2006.01); F23R 3/28 (2006.01); F23R 3/30 (2006.01)
CPC F23R 3/06 (2013.01) [F23R 3/002 (2013.01); F23R 3/12 (2013.01); F23R 3/60 (2013.01); F23R 3/10 (2013.01); F23R 3/286 (2013.01); F23R 3/30 (2013.01); F23R 3/50 (2013.01); F23R 3/58 (2013.01); F23R 2900/00015 (2013.01); F23R 2900/03041 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A trapped vortex combustor for use in a gas turbine engine, the trapped vortex combustor defining a radial direction and a circumferential direction, the trapped vortex combustor comprising:
an outer vortex chamber wall having an inner surface on a combustion chamber side of the outer vortex chamber wall, and including an outer vortex chamber wall flange arranged at a forward end of the outer vortex chamber wall;
a dome having an outer dome flange; and
a mount attaching the outer dome flange to the outer vortex chamber wall flange, a channel defined between the outer dome flange and the outer vortex chamber wall flange,
wherein the dome, the outer vortex chamber wall, or both define at least in part an outer trapped vortex chamber, the channel extending along the circumferential direction at the mount between the outer dome flange and the outer vortex chamber wall flange and configured to receive an airflow, the mount including a plurality of openings in airflow communication with the channel for providing the airflow as a continuous annular airflow to the inner surface of the outer vortex chamber wall, wherein the dome further defines a fuel nozzle opening, with all openings in the dome outward of the fuel nozzle opening along the radial direction, excepting any effusion cooling holes having a diameter less than about 0.035 inches, being in airflow communication with the channel,
wherein the mount further comprises a C-shaped flange extending around the outer vortex chamber wall flange and the outer dome flange, and
wherein the plurality of openings of the mount are defined in a forward end of the C-shaped flange to provide the airflow to the channel defined between the outer vortex chamber wall flange and the outer dome flange.