US 11,867,400 B1
Combustor with fuel plenum with mixing passages having baffles
Tin Cheung John Hu, Markham (CA)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by Pratt & Whitney Canada Corp., Longueuil (CA)
Filed on Feb. 2, 2023, as Appl. No. 18/104,935.
Int. Cl. F23R 3/28 (2006.01)
CPC F23R 3/286 (2013.01) 14 Claims
OG exemplary drawing
 
1. A combustor for a gas turbine engine comprising:
a liner surrounding a gaseous fuel and air mixing body;
a gaseous fuel supply passage for delivering fuel into the mixing body;
a wall of the mixing body having air openings to communicate air into mixing passages, at least one fuel opening in each of the mixing passages allows fuel to flow into the mixing passages and mix with the air, and passage sections downstream of a location of the fuel openings, such that said mixed air and fuel travel downstream of the location and into a combustion chamber;
the passage sections having baffles that create a tortuous path;
the fuel from the fuel supply passage passing into a fuel plenum, then into the mixing passages through the at least one fuel opening; and
each of the mixing passages have at least one of the baffles with the at least one fuel opening to communicate fuel from the fuel plenum into the mixing passages.