Vertical-axis wind turbine
View Patent ↗The wind turbine includes a rotor 6 and a stator 1 mounted coaxially therewith and provided with lower 2 and upper 3 support structures interconnected by vertical guide vanes 4 of the stator, oriented outward. A confuser 22 with blades 23 is mounted on the lower support structure 2 , and a diffuser 9 is mounted at least partially above the stator 1 . A lower disc 10 of the diffuser is rigidly attached to an upper part 11 of the diffuser that serves as the upper support structure 3 of the stator. Lower 19 and upper 16 half-axles of rotation of the rotor are installed in upper 17 and lower 21 support members, respectively. A rotor body 7 is made in the general approximate form of a hollow truncated cone tapering upward having a curvilinear surface, preferably hyperbolic. Rotor blades 8 have a curvilinear surface, preferably hyperbolic, and are installed on an outer surface of the rotor body 7 . Upper 13 and lower 14 impellers with curvilinear blades 15 and 20 are mounted inside the rotor body. A rotor fan 25 is additionally installed inside a cavity 24 of the lower disc 10 of the diffuser 9 . The blades of the fan are wrapped around the upper part of the outer surface of the rotor body 7 . Spacing of the blades of the upper impeller 13 is chosen to be greater than a blade spacing of the fan 25.
1. A wind turbine, comprising:
a stator having lower and upper support structures interconnected by vertical guide vanes of the stator,
a rotor comprising a rotor body having a general approximate shape of a hollow truncated cone tapering
upward, and rotor blades installed on an outer surface of the rotor body,
upper and lower support members,
upper and lower half-axles or rotation of the rotor installed in the upper and lower support members respectively, wherein the upper and lower half-axles define a vertical axis of rotation of the rotor relative to the stator,
a cross-piece, the upper support member being secured to the under support structure of the stator with the help of the cross-piece,
an upper impeller secured inside an upper part of the rotor body, the upper part of the rotor body being secured to the upper half-axle for rotation of the rotor with the help of blades of the upper impeller,
a lower impeller arranged in a lower part of the rotor body, wherein blades of the lower impeller connect the rotor body with the lower half-axle for rotation of the rotor,
a confuser with blades, installed on the lower support structure of the stator, the lower support member being secured at a top of the confuser, a diffuser installed partially above the stator,
the diffuser comprising two spaced biconvex discs, the two spaced biconvex discs including a lower disc and an upper disc, respectively, the lower disc being rigidly connected to the upper disc, while serving as the upper support member of the stator,
and
a rotor fan installed in a cavity of the lower disc of the diffuser, wherein blades of the rotor fan are wrapped around the outer surface of the rotor body, wherein a spacing of the blades of the upper impeller is greater than a spacing of the blades of the rotor fan,
wherein:
the guide vanes of the stator have a curved surface and are oriented outward, and
the outer surface of the rotor body has a hyperbolic shape.
2. The wind turbine according to claim 1 , wherein a respective surface of each of the rotor blades has a hyperbolic shape.
3. The wind turbine according to claim 1 , wherein the guide vanes of the stator are configured to enable a change in an angle of inclination of the guide vanes relative to the vertical axis.
4. A wind turbine, comprising:
a stator having lower and upper support structures interconnected by vertical guide vanes of the stator,
a rotor comprising a rotor body having a general approximate shape of a hollow truncated cone tapering upward, and rotor blades installed on an outer surface of the rotor body,
upper and lower support members,
upper and lower half-axles for rotation of the rotor installed in the upper and lower support members respectively, wherein the upper and lower half-axles define a vertical axis of rotation of the rotor relative to the stator,
a cross-piece, the upper support member being secured to the upper support structure of the stator with the help of the cross-piece,
an upper impeller secured inside an upper part of the rotor body, the upper part of the rotor body being secured to the upper half-axle for rotation of the rotor with the help of blades of the upper impeller,
a lower impeller arranged in a lower part of the rotor body, wherein blades of the lower impeller connect the rotor body with the lower half-axle for rotation of the rotor,
a confuser with blades, installed on the lower support structure of the stator, the lower support member being secured at a top of the confuser,
a diffuser installed at least partially above the stator, the diffuser comprising two spaced biconvex discs, the two spaced biconvex discs including a lower disc and an upper disc, respectively, the lower disc being rigidly connected to the upper disc, while serving as the upper support member of the stator, and
a rotor fan installed in a cavity of the lower disc of the diffuser, wherein blades of the rotor fan are wrapped around the outer surface of the rotor body, wherein a spacing of the blades of the upper impeller is greater than a spacing of the blades of the rotor fan,
wherein:
the guide vanes of the stator have a curved surface and are oriented outward, and
a respective surface of each of the rotor blades has a hyperbolic shape.
5. A wind turbine, comprising:
a stator having lower and upper support structures interconnected by vertical guide vanes of the stator,
a rotor comprising a rotor body having a general approximate shape of a hollow truncated cone tapering upward, and rotor blades installed on an outer surface of the rotor body,
upper and lower support members,
upper and lower half-axles for rotation of the rotor installed in the upper and lower support members respectively, wherein the upper and lower half-axles define a vertical axis of rotation of the rotor relative to the stator,
a cross-piece, the upper support member being secured to the upper support structure of the stator with the help of the cross-piece,
an upper impeller secured inside an upper part of the rotor body, the upper part of the rotor body being secured to the upper half-axle for rotation of the rotor with the help of blades of the upper impeller,
a lower impeller arranged in a lower part of the rotor body, wherein blades of the lower impeller connect the rotor body with the lower half-axle for rotation of the rotor,
a confuser with blades, installed on the lower support structure of the stator, the lower support member being secured at a top of the confuser,
a diffuser installed at least partially above the stator, the diffuser comprising two spaced biconvex discs, the two spaced biconvex discs including a lower disc and an upper disc, respectively, the lower disc being rigidly connected to the upper disc, while serving as the upper support member of the stator, and
a rotor fan installed in a cavity of the lower disc of the diffuser, wherein blades of the rotor fan are wrapped around the outer surface of the rotor body, wherein a spacing of the blades of the upper impeller is greater than a spacing of the blades of the rotor fan,
wherein:
the guide vanes of the stator have a curved surface and are oriented outward, and
the guide vanes of the stator are configured to enable a change in an angle of inclination of the guide vanes relative to the vertical axis.