VORTEX FUEL NOZZLE TO REDUCE NOISE LEVELS AND IMPROVE MIXING

摘要

A fuel nozzle with a ring of fuel spray orifices directing fuel jets at a fu el vortex generator having a fuel deflecting surface disposed downstream a distance from each fuel spray orifice. A mixing chamber is defined between t he fuel spray orifices and the fuel deflecting surface having a surface contour oriented to deflect fuel jets into the mixing chamber in counter-rotating adjacent pairs of fuel laden vortices. An air inlet supplies air to the mixi ng chamber via an airflow vortex generator having an airflow deflecting surface with a surface contour oriented to deflect airflow into the mixing chamber i n counter-rotating adjacent pairs of airflow vortices. A fuel-air mixture outl et downstream from the mixing chamber releases the fuel-air mixture into a combustor for ignition.