US 11,971,172 B2
Combustor premixer assembly including inlet lips
David A. Lind, Lebanon, OH (US); Ajoy Patra, Bengaluru (IN); Ting-Yu Tu, Cincinnati, OH (US); Pradeep Naik, Bengaluru (IN); and Gregory A. Boardman, Owens Cross Road, AL (US)
Assigned to GENERAL ELECTRIC COMPANY, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Oct. 25, 2021, as Appl. No. 17/509,470.
Application 17/509,470 is a division of application No. 16/407,990, filed on May 9, 2019, granted, now 11,175,046.
Prior Publication US 2022/0042683 A1, Feb. 10, 2022
Int. Cl. F23R 3/28 (2006.01); F23R 3/14 (2006.01); F23R 3/34 (2006.01); F23C 7/00 (2006.01)
CPC F23R 3/286 (2013.01) [F23R 3/14 (2013.01); F23R 3/34 (2013.01); F23C 7/004 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A premixer assembly for a combustor having a centerline axis, the premixer assembly extending in a radial direction from an outboard end to an inboard end with respect to the centerline axis, comprising:
a ring of outer premixers and a ring of inner premixers, each of the outer premixers and each of the inner premixers having:
a central axis;
a peripheral wall surrounding a centerbody, the peripheral wall having an inner wall portion and an outer wall portion with respect to the centerline axis and defining an inlet area of the premixer; and
at least one swirler disposed between the centerbody and the peripheral wall,
wherein each outer premixer of the ring of outer premixers has an outer premixer outboard lip extending forward along the central axis and radially inboard from the respective outer wall portion, and
wherein each inner premixer of the ring of inner premixers has an inner premixer inboard lip extending forward along the central axis and radially outboard from the respective inner wall portion.