Patent ID: 7581396

Claim:
A mixer assembly for use in a combustion chamber of a gas turbine engine, comprising: (a) a pilot mixer including an annular pilot housing having a hollow interior and a pilot fuel nozzle mounted in said pilot housing and adapted for dispensing droplets of fuel to said hollow interior of said pilot housing; (b) a main mixer including: (1) a main housing surrounding said pilot housing and defining an annular cavity; (2) a plurality of fuel injection ports for introducing fuel into said cavity; (3) a swirler arrangement including at least first, second, and third swirlers positioned upstream from said fuel injection ports, said first swirler positioned axially upstream of said second swirler and said third swirler positioned axially downstream of said second swirler, wherein each swirler of said swirler arrangement is oriented substantially radially to a centerline axis through said mixer assembly and has a plurality of vanes for swirling air traveling through such swirler to mix air and said droplets of fuel dispensed by said fuel injection ports; and, (c) a fuel manifold positioned between said pilot mixer and said main mixer, wherein said plurality of fuel injection ports for introducing fuel into said main mixer cavity are in flow communication with said fuel manifold.