VERTICAL-AXIS WIND TURBINE

• US 20120183407A1
• Filed: 03/21/2012
• Published: 07/19/2012
• Est. Priority Date: 09/22/2009
• Status: Abandoned Application

• Current Assignee: Roberto Vallejo
• Original Assignee: Roberto Vallejo
• Inventors: Vallejo, Roberto
• Application Number:
  US13/425,843
• Publication Number:
  US 20120183407A1
• Time in Patent Office: Days
• US Class Current: 416/228
• CPC Class Codes: F03D 3/061 characterised by their aerodynamic shape, e.g. aerofoil profiles
• CPC Class Codes: F03D 3/064 Fixing wind engaging parts to rest of rotor
• CPC Class Codes: F05B 2240/213 of the Savonius type
• CPC Class Codes: F05B 2240/301 Cross-section characteristics
• CPC Class Codes: F05B 2240/911 already existing for a prior purpose
• CPC Class Codes: F05B 2240/9112 which is a building
• CPC Class Codes: F05B 2250/232 conical
• CPC Class Codes: F05B 2250/25 helical
• CPC Class Codes: F05B 2250/71 curved
• CPC Class Codes: Y02B 10/30 Wind power
• CPC Class Codes: Y02E 10/728 Onshore wind turbines
• CPC Class Codes: Y02E 10/74 Wind turbines with rotation axis perpendicular to the wind direction

Abstract

A vertical axis wind turbine having a vertical rotating axle and a plurality of blades each attached to an upper portion to the rotating axle and at the bottom portion to a convex base dome attached to and rotable with the vertical axle. Each blade wraps around vertical axle and has a radial width that increases from its upper portion to its lower portion while supporting an open brow section forming a cup-like space with webbed like stiffeners section.

Claims

1. A vertical axis wind turbine comprising:

a vertical rotating axle having an upper portion and a bottom portion;

a concave base dome attached to said bottom portion of said vertical rotating axle; and

,

a plurality of blades having an upper and bottom portion, wherein said upper portion of said blade is attached to the upper portion of the rotating axle and said bottom portion of said blade is attached to the concave base dome such that said blades rotate with said vertical rotating axle, and wherein said blades are attached to said concave base dome at an angle other than 90 degrees.

2. The wind turbine of claim 1, wherein each of plurality of blades fully encircles the vertical rotating axle at said upper portion.

3. The wind turbine of claim 1, wherein each of the plurality of blades has a radial width that increases from the upper to the bottom portion.

4. The wind turbine of claim 1, further comprising one or more brow sections upon each blade.

5. The wind turbine of claim 4, further comprising a one or more web stiffener sections upon each blade,

6. The wind turbine of claim 1, wherein each of plurality of blades includes a rough inside and a smooth outside surface.

7. The wind turbine of claim 1, wherein the base dome is shaped like an upside down bowl.

8. The wind turbine of claim 4, wherein the plurality of blades and brows are formed from a frustum of a cone.

9. The wind turbine of claim 4, wherein the plurality of blades and brows are formed from a frustum of a cylinder.

10. The wind turbine of claim 4, where the brows are attached to the blade and are angled wide and open forming a cup-shaped space.

11. The wind turbine of claim 4, further comprising one or more rings attached to each of the plurality of blades, brow sections, and to the vertical rotating axle by multiple radial spokes.

12. The wind turbine of claim 11, wherein the blades, brow sections, rings, spokes and vertical rotating axle form a truss.

13. The wind turbine of claim 5, wherein the webbed stiffeners are disposed between the blades and the brows to maintain the shape and rigidity of the blades.

14. The wind turbine of claim 1, further comprising one or more counter weights per blade

15. The wind turbine of claim 1, wherein the plurality of blades are attached and angled to the adjacent plane of the dome in the front to form an obtuse angle and in the back to form an acute angle.

16. The wind turbine of claim 1, wherein the blades bend off axis at about ½

height forming a curved edge.

17. The wind turbine of claim 1, wherein each blade has a front and a back and the bottom front portion of each blade is concave and the bottom back portion of each blade is convex.

18. The wind turbine of claim 1, further comprising a support structure comprising an umbrella-shaped top portion located at the upper portion of the vertical axis and connected to a plurality of foundation elements located at lower portion of the vertical axis by a plurality of support cables.

19. The wind turbine of claim 4, wherein the plurality of blades and brows are formed from a flat material stock.

20. A vertical axis wind turbine comprising:

a vertical rotating axle having an upper portion and a bottom portion;

a concave base dome attached to said bottom portion of said vertical rotating axle; and

,

a plurality of blades having an upper and bottom portion, wherein said upper portion of said blade is attached to the upper portion of the rotating axle and said bottom portion of said blade is attached to the concave base dome such that said blades rotate with said vertical rotating axle.