Vertical shaft wind power machine wind wheel

Abstract

A vertical shaft wind wheel relates to the device to use the wind energy. It is made up of the central axis, the connecting pole and more than 3 vanes. The vane is the arc curved vane which is set with the arc cross support and the vertical axis in the arc curved; the rectangle grid forms between the cross support and the vertical axis. The grid part is set with the active wind vane and the limiting part to control the wind vane rotating angle. The wind vane section is the airfoil shape which the front part matches with the vertical axis. The invention is installed on the vertical axis wind fan which the central axis and the arc vane are vertical to the ground. Under the level wind force, the wind vane on vane is forced by the thrust F1, the oblique force F2 and the lift force F3 to generate the moment M1, M2 and M3 to make the wind wheel rotate in a same direction; it would rotate continuously until the wind force stops. The invention can transform the wind energy into the electric energy or mechanism energy by many modes; also it has low request for the starting wind speed and high wind energy using efficiency.

Description

technical field [0001] The invention relates to a wind wheel of a vertical axis wind power machine, and belongs to the technical field of wind energy utilization devices. Background technique [0002] Wind turbines can convert wind energy into mechanical energy or electrical energy, and have broad application prospects. As the core component of wind turbines, wind rotors have an important impact on the energy conversion efficiency. The wind rotors of existing vertical axis wind turbines are divided into two types according to the way the wind pushes the wind rotors: lift type and drag type. [0003] The blades of the lift-type vertical axis wind turbine are similar to the wings of an airplane. When the air flow passes by, the lift produced by the blades as wings pushes the wind wheel to rotate, such as the disclosed invention (CN85201691). It is a lift type. The advantage of this type of wind rotor is that it is simple in structure. The disadvantage is that it requires a hi...

AI Technical Summary

Problems solved by technology

[0004] The blades of the wind wheel of the resistance type vertical axis wind turbine are cross-blocked on the passage of the air flow. When the air flow is used to blow to the blade, the large pressure difference between the front and back of the blade forms a thrust to push the wind wheel to rotate, as disclosed in the disclosed invention (CN85108096A, CN1450263A , CN1474050A, CN2505613Y) wind rotor blades are resistance type, the advantage of this type of wind rotor is that the requirement for starting wind speed is relatively low, and the disadvantage is that the utilization efficiency of wind energy is relatively low

[0005] Recently, there is also a kind of resistance and lift composite wind power device, such as the disclosed invention (CN200510044144.8), which is to use the hollow cavity formed by the airfoil blades made of thin plates to block the wind and generate thrust. Pushing the wind wheel to rotate, its wind energy utilization rate is still not good

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