Vertical axis wind turbine
View Patent ↗A vertical axis wind turbine includes a cylindrical rotor with a plurality of convex-concave blades placed in a stator which directs the wind stream. The VAWT is installed vertically towards a surface of the ground, and wherein, the stator and the rotor are formed of vertically located blades which may have numerous geometric forms. Both the stator and rotor blades have a leading edge and a trailing edge, and each blade of the stator possesses a top end that is fastened to an immobile upper plate of the stator, and a bottom end that is fastened to a lower plate of the stator. In this embodiment, each blade of the rotor includes a top end fixed to an upper plate, while a bottom end of the each blade is fixed to a lower plate.
1. A vertical axis wind turbine (VAWT) comprising:
a set of rotor blocks arranged on a vertical axis, wherein each individual rotor block is interconnected through a set of screws;
a flanged shaft, wherein an end of the uppermost rotor block is fixed to the flanged shaft through a set of flanged shaft screws;
a tube contained within the set of rotor blocks, wherein the tube receives the flanged shaft and extends from a top of the uppermost rotor block to a bottom of a lowermost rotor block and is connected via a set of flange shaft bolts to a butt of a wind turbine flanged shaft;
a body, wherein the body is fixed on a foundation ring via a set of foundation bolts;
a body cover connected to the body and the lowermost rotor block;
a rotatory column installed in a center of the body and fixed on a lubricated support bearing to enable rotation of the rotatory column wherein the final regulation of the rotatory column along the vertical axis is accomplished through a compensation ring;
a set of stator blocks, wherein the set of stator blocks surround the set of rotor block and are interconnected through the set of screws and are motionlessly connected to a closure head through the set of screws;
a foundation to support the set of rotor blocks and set of stator blocks;
a set of rotor blades contained within each rotor block, wherein each rotor blade comprises a leading edge and a trailing edge;
a set of stator blades contained within each stator block, wherein each stator blade comprises a leading edge and a trailing edge; and
wherein a surface of each rotor blade is made respectively of a top (positive) part of the rotor's blade edgy profile, and a surface of each stator blade is made respectively of a bottom (negative) part of the edgy profile, deposed along a horizontal axis and the blades are placed along the rotor and stator radius evenly on one line in the horizontal plane and with a minimal gap in the vertical plane and the leading edge of the rotor blade surface is the continuation of the trailing edge of the stator blade surface that an edgy profile butt is formed on one axial line along the radius in a static position and the stator and rotor blades are perpendicular to the rotation axis along with having an identical length and equal in quantity.
2. The VAWT of claim 1 wherein the foundation further comprises:
an assembly of metallic channel bars welded to each other through a foundation ring;
a series of insert-fixing-plates anchor the foundation to the ground by means of a set of anchor nuts and a set of anchor bolts; and
a plurality of solar panels attached to the sides of the foundation which rotate about a hinge pin.
3. The VAWT of claim 1 further comprising a first controller located within the foundation to receive electric power generated by the solar panels, wherein part of the electric power is passed to an inverter and the remaining power is directed to a series of accumulators to the store the remaining power.
4. The VAWT of claim 3 further comprising a generator, wherein the electricity generated by the VAWT via the generator passes to a second controller, wherein part of the electric power is passed to a converter and the remaining power is directed to the series of accumulators to the store the remaining power.
5. The VAWT of claim 1 , wherein a minimal gap exists between the set of rotor blocks and the set of stator blocks.
6. The VAWT of claim 1 , wherein a closure is motionlessly fixed on a last upper block of the set of stators through a set of bolts and a beacon is located on the closure to characterize a height of the VAWT which includes an LED lamp to illuminate the presence of the VAWT.
7. The VAWT of claim 1 , wherein an upper ring is fixed on the end of the flanged shaft through the set of flanged shaft screws.
8. The VAWT of claim 1 , wherein the trailing edge of each rotor blade is attached to the tube.
9. The VAWT of claim 1 , wherein to harvest the power generated from the rotary column, a belt transmission engages a pulley which is fixed to the generator, and the pulled acts on a dowel which transfers energy from the rotary column to the generator.
10. The VAWT of claim 1 , wherein a disc is fixed on the butt of the wind turbine flanged shaft through a finger, and wherein a brake stops the disc with a set of blocks to reduce the rotational speed of the rotary column.
11. The VAWT of claim 1 , wherein the stator blades are immobile and accelerate airflow into a concave end of the rotor blade which spin and exert a rotational force on the tube.
12. The VAWT of claim 11 , wherein a top end of each stator blade is fixed to an immobile upper stator plate and a bottom end of each stator blade is fixed to an immobile lower stator plate.
13. The VAWT of claim 12 , wherein the upper stator plate and the lower stator plated are oriented parallel to one another.
14. The VAWT of claim 1 , where're twelve stator blades are equidistantly spaced thirty degrees apart in each stator block and surround twelve equidistantly spaced rotor blades located in each rotor block.
15. The VAWT of claim 1 , wherein the rotor blade trailing edge 3 is fixed to the tube, which encircles an outer wall of the pipe and the rotor blade leading edge further comprises a continuation of the corresponding stator blade trailing edge which promotes the flow of laminar air into the rotary column.
16. The VAWT of claim 1 , wherein the rotor blade trailing edge and the stator blade trailing edge lie at one hundred percent of a length.
17. The VAWT of claim 16 , wherein a depth of the rotor blade is seventy percent of the length of the rotor blade, and the depth of the stator blade is thirty percent of the length of the stator blade, wherein both the rotor blade and stator blade are of equivalent length, and the sum of the stator blade depth and rotor blade depth is equivalent to the length of the rotor blade and the length stator blade.
18. The VAWT of claim 16 , wherein the rotor blade comprises an inflection point near eighty-five percent of the rotor blade length, wherein along one side the rotor blade, approximately eighty-five percent of the length comprises a concave end and the remaining fifteen percent of the length comprises a convex end.
19. The VAWT of claim 18 , wherein the concave end receives air directed by the stator blades and the convex end facilitates sturdy attachment of the rotor blade to the tube.