US 12,215,866 B2
Combustor for a turbine engine having a fuel-air mixer including a set of mixing passages
Pradeep Naik, Bengaluru (IN); Manampathy G. Giridharan, Evendale, OH (US); Ajoy Patra, Bengaluru (IN); Perumallu Vukanti, Bengaluru (IN); and R Narasimha Chiranthan, Bengaluru (IN)
Assigned to General Electric Company, Evendale, OH (US)
Filed by GENERAL ELECTRIC COMPANY, Schenectady, NY (US)
Filed on May 2, 2022, as Appl. No. 17/734,469.
Claims priority of provisional application 63/311,657, filed on Feb. 18, 2022.
Prior Publication US 2023/0266009 A1, Aug. 24, 2023
Int. Cl. F23R 3/14 (2006.01); F23R 3/28 (2006.01)
CPC F23R 3/286 (2013.01) [F23R 3/14 (2013.01); F23R 3/283 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A turbine engine, comprising:
a compressor section, a combustion section, and a turbine section in axial flow arrangement, with the combustion section having a combustor comprising:
a combustor liner at least partially defining a combustion chamber;
a compressed air passage fluidly coupling a source of compressed air to the combustion chamber;
at least one fuel supply; and
a fuel-air mixer fluidly coupled to the at least one fuel supply and the compressed air passage, the fuel-air mixer comprising:
a body extending forward to aft along a central axis and having an exterior wall radially spaced from an inner wall;
a central air passage at least partially defined by the inner wall and fluidly coupled to the compressed air passage, wherein the central air passage is annular and extends along the central axis;
a set of discrete and fluidly separated mixing passages located between the inner wall and the exterior wall and circumferentially spaced about the central axis, with the set of mixing passages positioned radially outward of the central air passage;
a first set of apertures fluidly coupling the central air passage to the set of mixing passages;
a central wall positioned radially inward of the inner wall and defining a central gaseous fuel passage fluidly coupled to the at least one fuel supply, wherein the central gaseous fuel passage is cylindrical and the central axis passes through the central gaseous fuel passage such that the central gaseous fuel passage is surrounded by the central air passage; and
a second set of apertures in the central wall and fluidly coupled to the set of mixing passages to define a set of gaseous fuel ports fluidly coupling the central gaseous fuel passage to the set of mixing passages;
wherein the gaseous fuel ports fluidly couple to the set of mixing passages downstream of where the first set of apertures fluidly couple to the set of mixing passages.