초록 ▼

An air fuel mixer having a mixing duct, a set of inner and outer counter-rotating swirlers at the upstream end of the mixing duct, and means for injecting fuel into the mixing duct is provided, wherein high pressure air from a compressor is injected into the mixing duct through the swirlers to form

An air fuel mixer having a mixing duct, a set of inner and outer counter-rotating swirlers at the upstream end of the mixing duct, and means for injecting fuel into the mixing duct is provided, wherein high pressure air from a compressor is injected into the mixing duct through the swirlers to form an intense shear region and fuel is injected into the mixing duct from the fuel nozzle by means of a plurality of non-linear fuel spokes so that the high pressure air and the fuel is uniformly mixed therein so as to produce minimal formation of pollutants when the fuel/air mixture is exhausted out the downstream end of said mixing duct into the combustor and ignited.

대표청구항 ▼

An apparatus for premixing fuel and air prior to combustion in a gas turbine engine, comprising: (a) a mixing duct having a longitudinal axis extending therethrough; (b) a set of inner and outer counter-rotating swirlers adjacent the upstream end of said mixing duct; (c) a fuel nozzle located axiall

An apparatus for premixing fuel and air prior to combustion in a gas turbine engine, comprising: (a) a mixing duct having a longitudinal axis extending therethrough; (b) a set of inner and outer counter-rotating swirlers adjacent the upstream end of said mixing duct; (c) a fuel nozzle located axially along and forming a centerbody of said mixing duct; and (d) a plurality of fuel spokes extending radially outward from said fuel nozzle, each of said fuel spokes having a plurality of fuel insection holes formed therein, wherein said fuel spokes have a nonlinear configuration when viewed in an axial cross-section of said mixing duct in order to minimize distance between adjacent fuel injection holes within said mixing duct; wherein high pressure air from a compressor is injected into said mixing duct through said swirlers to form an intense shear region and fuel is injected into said mixing duct from said fuel spokes so that the high pressure air and the fuel is uniformly mixed therein so as to produce minimal formation of pollutants when the fuel/air mixture is exhausted out the downstream end of said mixing duct into the combustor and ignited.