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INVENTION
Russian Federation Patent RU2280783
Wind turbine FOR MECHANICAL AND ELECTRICAL ENERGY
Name of the inventor: Melnikov Aleksandr Petrovich (RU); Alexey Melnikov
The name of the patentee:
Address for correspondence:. 109429, Moscow, Kapotnya, 1 quart, 10, kv.35, AA Melnikov
Starting date of the patent: 2005.02.10
The invention relates to wind power engineering, in particular to wind turbines, and may be used to obtain mechanical or electric energy. The technical result is to increase the utilization of wind energy, and is provided by the fact that a wind turbine comprising mounted in the stator on a vertical axis turbine and a system of rotary vetronapravlyayuschih screens according to the invention the stator is designed as a group of conjugate with each other on the sides of a truncated pyramid, small base facing the axis of rotation of the wind turbine and the rotation axis of screens located in the small base angles.
DESCRIPTION OF THE INVENTION
The invention relates to wind power engineering, in particular to wind turbines, and may be used for mechanical and electrical energy.
Known wind turbine comprising a wind turbine and two systems vetronapravlyayuschih screens - external and internal [1]. The external system with freely pivoting screen captures air flow, changing its direction only at the edges of the wind turbine, sends it to the internal, fixed system vetronapravlyayuschih screens, which again changing the direction of air flow, sends it to the wind turbine blades.
The disadvantage of this wind turbine is insufficient utilization of wind energy. In addition, the dual screen system vetronapravlyayuschih unnecessarily complicates the construction of the device.
The closest in technical essence and attainable effect is a wind turbine comprising a stator mounted on a vertical axis turbine and system vetronapravlyayuschih screens [2]. In the known device each vetronapravlyayuschy screen directly focused on the turbine blade and the extreme positions of the screen define the size of the wind turbine blades. This wind turbine is equipped with stops defining the end positions and the amount of free rotation vetronapravlyayuschih screens.
The disadvantages of the known device is the low utilization of wind energy.
The aim of the invention is to increase the utilization of wind energy. The goal is achieved due to the fact that the wind turbine comprising mounted in the stator on a vertical axis turbine and a system of rotary vetronapravlyayuschih screens, the stator is designed as a group of truncated pyramids conjugate with each other on the sides and facing the small base to the rotational axis, and screens pivot axis located in the small base angles.
Comparative analysis of the technical solution to the prototype revealed features that prove its compliance with the claimed combination of features of the invention the criterion of "novelty". When searching for analogues of prototype solutions are not found, similar to the features of the claimed solution, which proves compliance with the claimed combination of features of the invention criterion of "inventive step".
SUMMARY proposal is illustrated by drawings, which schematically represented:
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1 - wind turbine in the plan.
2 - the same, but with a change in the direction of the wind.
Wind turbine is a turbine 1 with blades 2 mounted on a vertical shaft 3. The shaft 3 is in turn mounted (not shown in the drawings the support) in the supports of the stator 4. Stator 4 is a group of truncated pyramids conjugate with each other on the sides and the small base facing towards the axis of rotation of the shaft 3 of the turbine 1. The small base angles located vertical pivot axis 5 vetronapravlyayuschih screens 6, pivoting under the action of the wind flow. The angle of rotation is limited to 6 screens vetronapravlyayuschih stoppers 7. The truncated pyramid stator 4 is essentially an air diffuser and increase the speed of the wind flow under the influence of the latter on the turbine blade 2 1. Vetronapravlyayuschie screens form the wind flow, the rotating rotor. wind flow speed and direction of the rotor blade, is increased compared with the velocity of the incident flow. The increase in speed is determined by the ratio of the areas of the input and output section of the stator flares. Increasing wind velocity increases the angular speed of the rotor, which in turn simplifies the conversion into another form of energy.
Comparative functional analysis with the prototype shows that the wind turbine stator claimed simultaneously performs the following functions: captures the airflow both upwind and downwind surface of the wind turbine; It changes the direction of air flow in the most favorable direction; air stream creates a moment against the rotor; It increases the dynamic pressure of the air flow.
The inventive wind turbine is less resistance to the movement of air currents coming to the blades of the wind turbine, and does not create a moment directed against the rotation of the rotor, which increases torque and improves the utilization of wind energy.
Wind turbine operates as follows. When the wind air flow V1 goes to the wind turbine 1 via the narrowing funnel of the stator 4 and 6 vetronapravlyayuschie screens that are under the influence of wind occupy a position which creates a rotating turbine airflow V2. This air flow, interacting with 2 blades of the wind turbine 1, creates a moment of rotating turbine 1 on a vertical shaft 3. Further, the air flow V2 is, passing through the wind turbine 1, is sent to the output through vetronapravlyayuschie screens 6 and expanding the stator socket 4. This air flow V2 provides additional time due to discharge at the exit of the expanding socket (convergent channel). With the change in wind direction vetronapravlyayuschie screens 6 are rotated around the axis 5, taking up position to facilitate the most effective impact of the airflow on the blades 2 of the wind turbine 1. The rotation angle 
vetronapravlyayuschih 6 screens around the axis 5 is limited by stoppers 7. When the number of sockets stator 4 is not less than five wind turbine operation does not depend on the direction of air flow, and its design allows for maximum use of wind energy.
INFORMATION SOURCES
1. France's application number 2512118, cl. F 03 D 3/04 of 1983
2. RF Patent number 2074980, cl. F 03 D 3/04 of 1997
CLAIM
Wind turbine comprising a set of stator on a vertical axis turbine and a system of rotary vetronapravlyayuschih screens, characterized in that the stator is designed as a group of conjugate with each other on the sides of the truncated pyramid facing the small base to the rotation axis of the wind turbine, and displays the rotation axis at the corners small base.
print version
Publication date 11.01.2007gg
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