US 12,130,013 B2
Swirler-ferrule assembly
Steven C. Vise, Loveland, OH (US); Clayton S. Cooper, Loveland, OH (US); Michael A. Benjamin, Cincinnati, OH (US); Pradeep Naik, Bengaluru (IN); Kwanwoo Kim, Cincinnati, OH (US); Shai Birmaher, Cincinnati, OH (US); Perumallu Vukanti, Bengaluru (IN); Saket Singh, Bengaluru (IN); and Karthikeyan Sampath, Bengaluru (IN)
Assigned to GENERAL ELECTRIC COMPANY, Evendale, OH (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Aug. 6, 2021, as Appl. No. 17/396,155.
Claims priority of application No. 202111028347 (IN), filed on Jun. 24, 2021.
Prior Publication US 2022/0412550 A1, Dec. 29, 2022
Int. Cl. F23D 11/38 (2006.01); B05B 7/10 (2006.01)
CPC F23D 11/383 (2013.01) [B05B 7/10 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A swirler-ferrule assembly comprising:
a radial swirler including:
(a) a primary swirler vane having a forward wall, an aft wall, and a primary air passage defined between the forward wall and the aft wall, wherein the forward wall defines a surface feature; and
(b) a secondary swirler vane having a secondary air passage;
a fuel nozzle configured to deliver fuel to a combustor;
a ferrule connected to the radial swirler, the ferrule configured to center the fuel nozzle in the radial swirler; and
the surface feature having a trailing end and a distal end and configured to direct an air flow through the primary air passage away from a recirculation zone located upstream of the primary swirler vane,
wherein the fuel nozzle is axially aligned with the trailing end of the surface feature.
 
9. A swirler-ferrule assembly comprising:
a radial swirler including:
(a) a primary swirler vane having a first wall, a second wall, and a primary air passage extending between the first wall and the second wall; and
(b) a secondary swirler vane having a secondary air passage;
a fuel nozzle configured to deliver fuel to a combustor;
a ferrule connected to the radial swirler, the ferrule configured to center the fuel nozzle in the radial swirler; and
a surface feature comprising a plurality of grooves, the surface feature being located on an axially facing forward surface of the second wall and configured to direct a primary air flow through the primary air passage away from a recirculation zone located upstream of the primary swirler vane, wherein each groove of the plurality of grooves extend radially from a radially inner surface to a radially outer surface.