DOUBLE-FLOW ENGINE Russian patent published in 2020 - IPC F02C7/12 

FIELD: machine building.

SUBSTANCE: invention relates to engine building, particularly, to output devices of double-flow engine. Known double-circuit engine comprising fan, high pressure compressor, combustion chamber, outer circuit path, multi-stage cooled turbine with low-pressure turbine impeller with cooled working blades, cooling channels of which by their outlets are interconnected with turbine gas path, and by inputs - with supply line passing through internal cavities of radial posts located behind turbine, wherein supply line through air intakes turned by their inputs to engine input is communicated with path of the air circuit, according to invention is equipped with mixer located behind radial posts behind turbine and made in form of channels alternating along perimeter, forming outlet cavity of external circuit and the inner cavity outlet cavity, wherein the outer cavity outlet cavity is interconnected with the outer circuit path, and the inner circuit outlet cavity is interconnected with the turbine gas path, wherein the air intakes are arranged along the outer circuit path before the mixer. Besides, the ratio of the outward cavity area of the outer outline to the inner cavity outlet cavity area in the radial plane can be equal to where F_outOC is the output cavity of outer circuit area; F_outIC - output cavity of inner circuit area.

EFFECT: implementation of the invention makes it possible to increase reliability of the turbine working blade and to reduce operating costs due to increased efficiency of cooling of the turbine at modes with maximum temperature of gas, and consequently, to increase service life of both the working blade and the engine as a whole.

1 cl, 3 dwg