Patent ID: 8225612

Claim:
A fuel spraying apparatus of a gas turbine engine, comprising: a first fuel spraying section of an air blast type configured to spray fuel for diffusion combustion; the first fuel spraying section comprising a spraying nozzle member; 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, the second fuel spraying section comprising a cylindrical intermediate wall; and an 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 that defines an outer edge of a diffusion combustion area in a combustion chamber, wherein the air curtain generating section includes a ring cover member for blocking downstream ends of the spraying nozzle member and the cylindrical intermediate wall, and wherein the ring cover member is provided with an air flow path communicating with the combustion chamber, the air flow path being configured to inject an air in a direction parallel with an axial direction of a combustor so as to generate the air curtain in a cylindrical form.