Patent ID: 6968692

Claim:
A mixing module, comprising: a pilot premixer including a first fuel dispenser and a first axial inflow swirler having a plurality of first vanes, said first axial inflow swirler disposed around at least a portion of said first fuel dispenser; and a main premixer including a second fuel dispenser and a second axial inflow swirler having a plurality of second vanes, said second fuel dispenser positioned to discharge a fuel for passage through at least a portion of said second axial inflow swirler, said main premixer positioned around at least a portion of said pilot premixer, said main premixer including a pair of fluid inlets, wherein one of said pair of fluid inlets is located upstream of said second axial swirler and positioned to allow the passage of a fluid into said second axial swirler and the other of said pair of fluid inlets is positioned to allow the passage of a fluid into said main premixer without passing through said second axial swirler, wherein the fluid entering the main premixer through said pair of fluid inlets is discharged through an outlet.