Wind-powered rotor and energy generation method using said rotor

Patent metadata

Field	Value
Publication number	US-9863398-B2
Application number	US-201113996651-A
Country	US
Kind code	B2
Filing date	Aug 1, 2011
Priority date	Dec 22, 2010
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A wind power rotor has a first and second rotor device. The first rotor device rotates about a first axis of rotation and has at least two rotor blades moving on a peripheral track about the first axis of rotation. The rotor blades are such that they describe a virtual first shell surface of a virtual first rotating body upon rotation about the first axis of rotation. The second rotor device rotates about a second axis of rotation and has a second rotating body with a closed second shell surface. The second rotating body is arranged at least partially inside of the virtual first rotating body. The first rotor device can be driven by wind in a first direction of rotation and the second rotor device has a drive device, and can be driven in a second direction of rotation which is opposite that of the first direction of rotation.

First claim

The invention claimed is:

1. A wind power rotor, comprising:
a first rotor device that rotates about a first axis of rotation and has at least two rotor blades that move on a peripheral track about the first axis of rotation, wherein the at least two rotor blades are arranged in such a manner that they define a virtual first shell surface of a virtual first rotating body upon rotation about the first axis of rotation; and
a second rotor device that rotates about a second axis of rotation and has a second rotating body with a closed second shell surface, wherein the second rotating body is arranged at least partially inside of the virtual first rotating body,
wherein the first rotor device is driven by wind in a first direction of rotation to convert wind energy into a drive force, and the second rotor device is driven in a second direction of rotation running counter to the first direction of rotation,
wherein, of the first and second rotor devices, only the first rotor device is driven by wind by virtue of the closed second shell surface, and
wherein the second rotor device produces a deflection of an air stream caused by the wind inside of the first rotor device against the first direction of rotation on a side of the second rotor device facing away from the wind.

2. A wind power rotor according to claim 1 , wherein the first axis of rotation is a first vertical axis of rotation, and the second axis of rotation is a second vertical axis of rotation.

3. A wind power rotor according to claim 1 , wherein the first axis of rotation is a first horizontal axis of rotation, and the second axis of rotation is a second horizontal axis of rotation.

4. A wind power rotor according to claim 1 , wherein the first rotor device has a Darrieus rotor.

5. A wind power rotor according to claim 1 , wherein upper and lower ends of the at least two rotor blades are arranged closer to the first axis of rotation than a region between the upper and lower ends, and the at least two rotor blades project outward with a curved shape.

6. A wind power rotor according to claim 1 , wherein the at least two rotor blades run parallel to the first axis of rotation.

7. A wind power rotor according to claim 1 , wherein the second rotating body is arranged entirely inside of the virtual first rotating body.

8. A wind power rotor according to claim 1 , wherein the second rotating body has different diameters along the second axis of rotation.

9. A wind power rotor according to claim 1 , further comprising a gear between the first rotor device and the second rotor device, wherein the gear transmits a rotation speed and reverses a direction of rotation.

10. A wind power rotor according to claim 1 , further comprising an electric motor that is driven by electrical current.

11. A wind power rotor according to claim 1 , wherein the second rotating body is selectively rotated in the first direction of rotation as well as in the second direction of rotation.

12. A wind turbine, comprising:
a rotor configured to convert wind movement into a rotary movement;
a generator that converts movement energy of the rotary movement into electrical energy; and
a gear that couples the rotor to the generator to transmit the rotary movement to the generator;
wherein the rotor is a wind power rotor, the wind power rotor comprising:
a first rotor device that rotates about a first axis of rotation and has at least two rotor blades configured to move on a peripheral track about the first axis of rotation, wherein the at least two rotor blades are arranged in such a manner that they define a virtual first shell surface of a virtual first rotating body upon rotation about the first axis of rotation; and
a second rotor device that rotates about a second axis of rotation and has a second rotating body with a closed second shell surface, wherein the second rotating body is arranged at least partially inside of the virtual first rotating body,
wherein the first rotor device is driven by wind in a first direction of rotation to convert wind energy into a drive force, and the second rotor device is driven in a second direction of rotation running counter to the first direction of rotation,
wherein, of the first and second rotor devices, only the first rotor device is driven by wind by virtue of the closed second shell surface, and
wherein the second rotor device produces a deflection of an air stream caused by the wind inside of the first rotor device against the first direction of rotation on a side of the second rotor device facing away from the wind.

13. A method for converting wind energy into drive energy to generate electrical current, comprising the following steps:
a) rotating a first rotor device about a first axis of rotation, in a first direction of rotation, by means of wind power, wherein the first rotor device has at least two rotor blades moving on a peripheral track about the first axis of rotation, wherein the at least two rotor blades are arranged in such a manner that they describe a virtual first shell surface of a virtual first rotating body upon rotation about the first axis of rotation;
b) rotating a second rotor device about a second axis of rotation, in a second direction of rotation opposite of the first direction of rotation, wherein the second rotor device has a second rotating body with a closed second shell surface, wherein the second rotating body is arranged at least partially inside of the virtual first rotating body, wherein the second rotor device achieves a deflection of an air stream created by wind inside of the first rotor device, on a side of the second rotor device facing away from the wind, opposite the first direction of rotation, wherein, of the first and second rotor devices, only the first rotor device is driven by wind by virtue of the closed second shell surface; and
c) driving of a current generator by the first rotor device.

Assignees

• Seifert Jost
• Airbus Defence & Space Gmbh

Inventors

• Seifert Jost

Classifications

• F03D9/25

  the apparatus being an electrical generator (F03D9/22 takes precedence) · CPC title

• F05B2240/201

  using the Magnus-effect · CPC title

• F03D3/005

  the axis being vertical · CPC title

• F03D3/002 Primary

  the axis being horizontal · CPC title

• F03D3/04

  having stationary wind-guiding means, e.g. with shrouds or channels (F03D9/35 takes precedence) · CPC title