WINDMILL BLADE IN FORM OF PART OF TRUNCATED ELLIPTICAL CYLINDER, LIMITED IN BASES BY PLANES, METHOD OF CONNECTING BLADES WITH CYLINDRICAL SURFACE IN WINDMILL ROTOR WITH AXIS OF ROTATION PERPENDICULAR TO AIR FLOW, WINDMILL ROTOR WITH AXIS OF ROTATION PERPENDICULAR TO AIR FLOW, CONTAINING BLADES WITH CYLINDRICAL SURFACE, WINDMILL ROTOR WITH AXIS OF ROTATION PERPENDICULAR TO AIR FLOW, CONTAINING BLADES WITH CYLINDRICAL SURFACE, LIMITED IN BASES BY DISCS Russian patent published in 2024 - IPC F03D3/06 

FIELD: wind power engineering.

SUBSTANCE: proposed group of inventions relates to wind power engineering, to windmills with axis of rotation perpendicular to air flow. Blade is a three-dimensional volumetric geometric figure formed by truncation by a secant plane along the axis of the cylinder and along a line which does not coincide with the lines of the major and minor axes of the straight elliptical hollow cylinder confined at the bases by planes. Blades are connected into a wheel by connection of the blades with side cylindrical surfaces. Windmill rotor is formed by connecting the cylindrical surfaces of the blades, wherein the vertical edge of the open part of the blade is connected to the cylindrical surface of a similar blade, which is also connected by the vertical edge to the cylindrical surface of the next blade along the circumference, and in the same sequence other blades are connected in the required number, equidistant from the axis, in one plane, closing the circle of blades, with formation of a structure in the form of a wheel of blades, which is combined by fastening elements into one device with the axis of the windmill.

EFFECT: increased efficiency of wind flow energy extraction.

4 cl, 7 dwg