Patent ID: 7921650
Filing Date: 2011-04-12
Classification: F23C,F23D,F23R,Y02T

Abstract:
1. A fuel spraying apparatus of a gas turbine engine, comprising: a first fuel spraying section configured to spray fuel for diffusion combustion; a second fuel spraying section configured to spray fuel for premixed combustion, the second fuel spraying section being disposed so as to surround the first fuel spraying section; and air curtain generating section disposed between the first fuel spraying section and the second fuel spraying section, the air curtain generating section being configured to generate an air curtain which defines an outer edge of a diffusion combustion area in a combustion chamber, wherein the second fuel spraying section comprises an inner swirler and an outer swirler, wherein the second fuel spraying section comprises a premixing chamber that is formed downstream of the outer swirler, the premixing chamber being a chamber that mixes fuel and air within the second fuel spraying section, and wherein the first fuel spraying section, the second fuel spraying section, the air curtain generating section, and the premixing chamber are all contained within a single nozzle.