Resistance and lifting force composite wind pwoer device

Abstract

The invention relates to a resistance and lift compound wind power device, in which the wing airfoil-vane of the wind wheel being a special structure with a curved surface is made of sheet. A plurality of air vanes are fixed on the rotation axis of the wind wheel being as the torque output shaft via a link rod. The intersection angle between the chord of each airfoil-vane and the link rod fixing the vanes is an angle of 60~70 degrees. Its character is that the wind vane has the compound action of resistance and lift. When the line speed of the wind vane approaches to the rated wind speed, the backward resistance produced by the wind vane and the quadratic of the relative wind speed of the wind vane forms direct proportion, so that it has automatic speed-limiting function.

Description

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AI Technical Summary

Benefits of technology

This new design allows for better control over how fast an air turbine rotates when it starts from very slow or stopped downwind conditions. By combining both resistive forces and lifting force on one part, this system can operate without any external devices like a weather vane that could cause damage during high altitude flight operations.

Problems solved by technology

This patented describes different ways for improving the performance of existing wind generators by adding an auxiliary system that increases their lifespan without requiring expensive maintenance. Additionally, there exist various methods used with these systems like adjustable pitch angle wings on top of them (LAPW) or changing the blade's shape from tilted-up to straightened out during operation.

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