Wind turbines with a rotation axis essentially perpendicular to the wind flow

Abstract

VAWT power machine, the efficiency of which is improved, characterized in that it consists of an inner surface ring and an outer ring of shell surface segments, preferably at least 2 opposite surfaces, which extends in the direction of rotation from a larger Distance to a small distance and are limited at the top and bottom by surfaces and thereby create a negative pressure by means of a nozzle effect. The negative pressure on the convex surfaces creates a force similar to an airfoil on the upper side, which generates a torque in the direction of rotation on the rotor. Furthermore, the flow on the concave surfaces generates a pressure force, which in part generates a torque in the direction of rotation. On the convex surface located on the opposite outer side of the rotation axis, a negative pressure and thus a torque in the direction of rotation is generated by the medium flowing past and the rotor rotating against the flow direction. By carrying the media flow in the direction of rotation and the pressure difference at the nozzle outlet, a torque is also generated partly transverse to the flow direction in the rear area (flow shadow).

Description

[0001] VAWT power machine that runs independently of the flow direction of a gaseous or liquid medium in an existing flow without interruption, which does not require adjustable rotor blades, without moving parts to control the aerodynamics in the rotor area, high stability, reliability and a long service life, as well as hardly any wear of the rotor.

[0002] The main task is to increase the generally known lower efficiency of vertical systems by using the flow energy and velocity for a longer period.

[0003] The task is solved by generating a nozzle effect by means of at least two opposing surfaces tapering in the direction of rotation, which are arranged at the top and bottom are limited by surfaces and are located at a distance from the axis of rotation and thus generate a torque.

[0004] Preferably, an oblique arrangement of the surface composites to the axis of rotation should be used, to enable a continuous flow attack.

[0005] The smaller outlet opening results in a higher flow velocity and therefore a lower pressure is generated.

[0006] These pressure differences lead to the generation of force, which in turn torque is generated.

[0007] On the surfaces located transverse to the flow direction, a resistance force is sometimes generated, which also generates a torque in the direction of rotation in the flow direction.

[0008] Due to the rotational movement and the changed flow in the outlet area, this flow (flow shadow) also generates a torque in the rear areas located transversely to the flow direction.

[0009] In the case of convex surfaces located opposite to the direction of rotation to the flow direction, negative pressure is also generated generates a torque in the direction of rotation. List of reference symbols 1 ring of lateral surfaces with concave and convex transition 2 inner ring with concave and convex transition 3 axis of rotation

Claims

[1] VAWT power machine whose efficiency is improved, characterized by , consisting of an inner surface ring and an outer ring of lateral surface segments, preferably at least 2 opposite surfaces, which extends in the direction of rotation from a larger Distance to a small distance and are limited at the top and bottom by surfaces and thereby create a negative pressure by means of a nozzle effect. The negative pressure on the convex surfaces creates a force similar to an airfoil on the upper side, which generates a torque in the direction of rotation on the rotor. Furthermore, the flow on the concave surfaces generates a pressure force, which in part generates a torque in the direction of rotation. On the convex surface located on the opposite outer side of the rotation axis, a negative pressure and thus a torque in the direction of rotation is generated by the medium flowing past and the rotor rotating against the flow direction. By carrying the media flow in the direction of rotation and the pressure difference at the nozzle outlet, a torque is also generated partly transverse to the flow direction in the rear area (flow shadow). [2] VAWT engine according to claim 1, characterized by that the upper and lower boundary surfaces together, or at least individually, also have concave and convex transitions and are thus subject to the same effects as the vertical surfaces and also generate a torque in the direction of rotation. [3] VAWT engine according to claim 1-2, characterized byThat the contacting surfaces are rounded to follow their contours or are connected together, or at least individually, by other surface shapes. They are thus subject to the same effects as the other surfaces and also generate a torque in the direction of rotation. [4] VAWT engine according to claim 1-3, characterized by that all surfaces have a multiple transition from convex and have concave surface segments. [5] VAWT engine according to claim 1-4, characterized by that the surfaces are designed using eddy and resistance reducing measures, such as vortex surfaces and the like. [6] VAWT engine according to claim 1-5, characterized by that the surfaces are interrupted (slotted) lengthwise, crosswise or diagonally in the direction of rotation and the flow is positively influenced by utilizing the Venturi effect.

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