FUEL NOZZLE AND METHOD OF ITS MAKING Russian patent published in 2007 - IPC F23D14/62 F02C7/22 F23D11/00 

FIELD: gas turbine engine engineering.

SUBSTANCE: fuel nozzle comprises ring passages arranged coaxially to the axis of the nozzle and provided with the inlet branch pipe for supplying air and output opening for discharging fuel-air mixture, rows of deflecting blades positioned in the appropriate passage, and means for supplying fuel to air. The blades in the first row are oriented differently with respect to these of the second row. The deflecting blades of the first row provide first flow circulation, and the blades of the second row provide the second flow circulation with the same direction. The device is additionally provided with the third row of the deflecting blades interposed between the first row and the second row. The device has the first combustion zone, the second combustion zone for burning leaned mixture positioned inside the first combustion zone, and third combustion zone for burning rich mixture in comparison with the mixture in the second zone that lies inside the second combustion zone. The mixture in the first, second, and third combustion zones is burnt out with component ratio lower the stoichiometric ratio. The device is a section of the combustion chamber of the gas turbine engine. The device has at least ten deflecting blades at least in the first and the second row.

EFFECT: enhanced efficiency.

20 cl, 4 dwg