CENTRIFUGAL-PNEUMATIC NOZZLE Russian patent published in 2024 - IPC F23D11/00 

FIELD: internal combustion engines.

SUBSTANCE: invention relates to devices for direct injection of liquid carbon fuel in drop state into combustion chambers of ground gas turbine plants (GTP) and aircraft turbojet engines (TJE). Centrifugal-pneumatic nozzle comprises a liquid fuel supply system consisting of a pneumatic part and a coaxially conjugated with it air channel with a vane swirler, coaxially to which a housing is installed and forms an annular cavity with it, in this cavity vanes of air flow swirling are installed on the side of the combustion chamber. Airflow swirling vanes are fixed at preset angle relative to incident flow equal to 30–50 degrees. Surface of the housing of the pneumatic part of the nozzle is made in the form of a single-cavity hyperboloid of the second order. In the neck section of the housing of the pneumatic part there is an air flow regulator made in the form of a hemisphere with a diameter equal to the diameter of the neck, which interacts with a rod installed in the annular groove of the piston. Hemisphere surface is directed to the combustion chamber outlet.

EFFECT: higher combustion efficiency of fuel-air mixture generated by the nozzle throughout the entire range of engine operating modes due to increasing the efficiency of fuel spraying as well as its mixing with air.

1 cl, 2 dwg