Patent ID: 6708498
Filing Date: 2004-03-23
Classification: F23R

Abstract:
A swirl cup for defining with a fuel injection nozzle a carburetor in a gas turbine combustor, said swirl cup comprising:a tubular body including at one end a forward plate having an inlet for receiving said fuel injection nozzle to inject fuel into said body, an outlet at an opposite axial end for discharging said fuel into said combustor, and an annular septum axially therebetween; a row of first swirl vanes attached to said forward plate and to a forward side of said septum aft of said body inlet for channeling into said body air in a first swirl direction around said injected fuel; and a row of second swirl vanes attached to an aft side of said septum and spaced upstream from said body outlet for channeling into said body additional air in a second swirl direction directly around both said injected fuel and said first swirl air, with said septum terminating radially inward of said first swirl vanes at a central aperture and axially forward of said second swirl vanes without a flow barrier extending aft from said septum between said rows of first and second swirl vanes.