Patent ID: 9383107
Filing Date: 2016-07-05
CPC Classification: F23R

Claim Text:
1. A fuel nozzle for a combustor, the fuel nozzle comprising: a burner tube component; a center nozzle assembly concentrically disposed within the burner tube component, the center nozzle assembly having center body that at least partially defines a cooling air flow passage through the center nozzle assembly, the center body having a downstream end; a premix flow passage defined between the burner tube component and the center nozzle assembly; a tip assembly disposed at the downstream end of the center body, the tip assembly having an impingement plate that extends radially across the downstream end of the center body, and a radially extending cap disposed downstream from the impingement plate, the impingement plate and the cap at least partially defining a cooling plenum therebetween; an insert passage that extends through the impingement plate; a cooling flow outlet that extends through the cap, the cooling flow outlet being coaxially aligned with the insert passage; a plurality of cooling ports that extend through the impingement plate to provide for fluid communication between the cooling air flow passage and the cooling plenum;