CENTRIFUGAL PNEUMATIC NOZZLE Russian patent published in 2022 - IPC F23D11/10 

FIELD: liquid hydrocarbon fuel injection.

SUBSTANCE: invention relates to devices for direct injection of liquid hydrocarbon fuel in a droplet state into the combustion chambers of ground-based gas turbine units (GTU) and aircraft turbojet engines (TJE). The substance of the invention lies in the fact that an additional housing is installed coaxially with the air channel, forming an annular cavity with it, in which, on the side of the combustion chamber, additionally hinged blades for swirling the air flow are installed with the possibility of rotation perpendicular to the longitudinal axis of the nozzle, as well as successively an elastic element, a piston and rods, while the piston consists of two belts interconnected by a rod dividing the annular cavity into two parts, and having an annular groove in the belt located on the side of the combustion chamber, in which rods are installed that interact with the blades of swirling the air flow through arcuate slots , made in the outer casing of the air channel of the injector, on the side of the compressor, in the region of the interzone space of the piston, three rows of holes are made on the inner casing of the annular cavity, directed at an angle in the direction opposite to the oncoming flow.

EFFECT: increasing the efficiency of atomization and mixing of fuel by controlling the air flow in all engine operating modes, thereby increasing the combustion efficiency coefficient in a wide range of engine operating modes.

1 cl, 1 dwg