Wind Power Plant

Abstract

The invention relates to a wind power plant, comprising a rotor that can be rotated about a vertical axis, said rotor between two horizontal bearing planes disposed at a distance on top of each other comprising a plurality of rotor blades, which are disposed distributed on a circumferential circle, can each be pivoted about a vertical pivot axis, and the pivot range of which is delimited on both sides by a stop. In such a wind power plant, an improvement in the energy yield, while simultaneously ensuring another operation, is enabled in that the width of the rotor blades is smaller than approximately ⅓ the radius of the circumferential circle.

1 . A wind power installation comprising:
 at least one rotor which can rotate about a vertical axis and, between two horizontal mounting planes, which are located one above the other and separated, and   a plurality of rotor blades, which are arranged distributed on a circumferential circle and can each pivot about a vertical pivoting axis, and whose pivoting range is bounded at both ends by a stop, wherein the width of the rotor blades is less than approximately ⅓ of the radius of the circumferential circle.   
     
     
         2 . The wind power installation as claimed in  claim 1 , wherein twelve or more rotor blades are arranged such that they can pivot on the circumferential circle of the rotor. 
     
     
         3 . The wind power installation as claimed in  claim 1 , wherein the rotor blades are in the form of straight blades. 
     
     
         4 . The wind power installation as claimed in  claim 3 , wherein the rotor blades each have a leading edge and a trailing edge, and have a reduced thickness between the leading edge and the trailing edge. 
     
     
         5 . The wind power installation as claimed in  claim 1 , wherein the pivoting range of the rotor blades is in each case limited to an angle of about 100°-115°. 
     
     
         6 . The wind power installation as claimed in  claim 5 , wherein, in one limit position of the pivoting range, the rotor blades each include an angle of about 50° with the radius vector of the circumferential circle which passes through the pivoting axis, and, in the other limit position of the pivoting range, include an angle of about 150°-165°. 
     
     
         7 . The wind power installation as claimed in  claim 4 , wherein the pivoting axes of the rotor blades are arranged within the rotor blades, in the vicinity of, but at a distance from, the leading edge. 
     
     
         8 . The wind power installation as claimed in  claim 7 , wherein the pivoting range of the rotor blades is in each case defined by a single stop which is arranged within the circumferential circle. 
     
     
         9 . The wind power installation as claimed in  claim 4 , wherein the pivoting axes of the rotor blades are arranged in the leading edges of the rotor blades. 
     
     
         10 . The wind power installation as claimed in  claim 9 , wherein the pivoting range of the rotor blades is in each case defined by a limiting element which is in the form of a circular arc, concentrically surrounds the pivoting axis, and whose ends each form a stop. 
     
     
         11 . The wind power installation as claimed in  claim 1 , wherein the mounting planes are formed by spoked wheels which rotate about the axis. 
     
     
         12 . The wind power installation as claimed in  claim 1 , wherein the wind power installation has a plurality of rotors which are arranged at different heights. 
     
     
         13 . The wind power installation as claimed in  claim 12 , wherein the rotors are arranged one above the other and rotate about the same axis. 
     
     
         14 . The wind power installation as claimed in  claim 13 , wherein the rotors can rotate independently of one another. 
     
     
         15 . The wind power installation as claimed in  claim 1 , wherein the rotor blades have an aerodynamic cross-sectional profile with a pointed end and a round end. 
     
     
         16 . The wind power installation as claimed in  claim 15 , wherein the pivoting axes of the rotor blades are arranged within the rotor blades in the vicinity of, but at a distance from, the round end, and wherein the pivoting range of the rotor blades is in each case defined by a single stop which is arranged within the rotor blade, rotationally fixed with respect to the pivoting axis. 
     
     
         17 . The wind power installation as claimed in  claim 1 , wherein the rotor drives at least one compressor via a power transmission, the compressor sucks in air on the input side and is connected on the output side to a compressed-air reservoir, and wherein a turbine can be connected to the compressed-air reservoir and drives a generator in order to produce electricity. 
     
     
         18 . The wind power installation as claimed in  claim 17 , wherein the rotor can be selectively connected to a plurality of compressors via power transmission. 
     
     
         19 . The wind power installation as claimed in  claim 17 , wherein the compressed-air reservoir is incorporated in the ground, and forms the foundation of the wind power installation arranged above it. 
     
     
         20 . The wind power installation as claimed in  claim 15 , wherein the aerodynamic cross-sectional profile is in the form of a stretched droplet.