INLET DEVICE OF ANNULAR COMBUSTION CHAMBER Russian patent published in 2023 - IPC F23R3/14 

FIELD: gas turbine engines.

SUBSTANCE: burner device of the annular combustion chamber containing the swirler body, the fuel nozzle, flanged to the shell of the combustion chamber, the end of the nozzle is installed in the opening of the swirler body, the swirler body is installed in the annular head. The swirler is located between the swirler body and the prechamber containing holes for the fuel-air mixture outlet, the outlet part of the prechamber has a concave profile with two recesses, the end of each nozzle is installed in the centre of the cylindrical part of the prechamber, a diffuser-shaped mixing chamber is installed at the outlet of the swirler with a transition to a cylindrical part, the annular head comprises holes for cooling the mixing chamber, at the end of each nozzle there are two rows of holes.

EFFECT: invention makes it possible to exclude local overheating of the annular head and burners, to ensure a low concentration of nitrogen oxides and carbon oxides, to improve the quality of fuel-air mixing.

1 cl, 1 dwg