Vertical shaft air returning type breeze generator

Abstract

The invention belongs to the field of renewable energy sources; and two groups of four blades rotating around a vertical shaft vertical to the ground and air returning grooves convert wind energy of breeze into electric energy. Most of traditional wind driven generators are respectively formed by an upright rod vertical to the ground, wherein a horizontal shaft arranged on the upright rod and three blades arranged at the shaft end, wind force pushes the blades to rotate, and a gear transmission belt is used for driving the generator to generate electricity. A horizontal shaft wind driven generator must be provided with a yawing and cable loosing device; the wind energy conversion rate of a vertical shaft wind driven generator vertical to the ground in unit area is about 50%; and the wind energy conversion rate of a horizontal shaft propeller wind driven generator is about 25%. A vertical shaft air returning type breeze generator provided by the invention comprises two wind baffles and the two air returning grooves, wherein the air returning grooves are used for guiding one half of forward wind in front of a wind turbine to the right back direction of the blades, so that the right back wind pushes the blades at the other side so that the blades generate a forward pure torque, thereby the overturning moment is eliminated, the torque is increased, and the power generating efficiency is improved.

Description

technical field [0001] The invention belongs to the field of renewable energy, and generates electricity through two sets of wind turbines rotating around a vertical axis vertical to the ground. Each set of wind turbines consists of more than three blades, a windshield and a return air slot; , converted into electrical energy. technical background [0002] As a clean and renewable energy, wind energy has attracted more and more attention from countries all over the world, and its reserves are huge. The global wind energy is about 2.74×10 9 MW, of which the available wind energy is 2×10 7 MW is 10 times larger than the total amount of water energy that can be developed and utilized on the earth. [0003] Most of the current wind generators are an upright pole with a horizontal shaft and three blades at the end of the shaft. The wind drives the blades to rotate and drives the generator to generate electricity through gear transmission. The total weight of the 1500-kilowatt f...

AI Technical Summary

Problems solved by technology

[0005] There are also a small number of wind turbines with a vertical axis, but they are all single-sided, with overturning moments, and the overall efficiency is not high

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