Vertical-axis wind driven generator and blade arm thereof

Abstract

The invention discloses a vertical-axis wind driven generator and a blade arm thereof. The vertical-axis wind driven generator comprises a generator body, at least one first blade arm and at least one blade. One end of the first blade arm is connected to one surface of the generator body; the other end of the first blade arm is connected with the blade; the first blade arm comprises a baseplate, two arc parts and two side plates; the two arc parts respectively extend from the two ends of the baseplate; the two side plates are respectively connected with the two arc parts; and the baseplate, the two arc parts and the two side plates define a groove space together. The blade arm of the vertical-axis wind driven generator can form an arc section without any acute angle in general, so the problems of stress concentration, fragile structure and the like can be effectively prevented. In addition, as the wind area of the arc section is lager than that of a V-shaped section, the increased torsion is stronger, and the starting wind speed required by the wind driven generator can be further lowered.

Description

technical field [0001] The invention relates to a wind power generator, and in particular to a vertical axis wind power generator and blade arms thereof. Background technique [0002] In recent years, due to the decrease of oil reserves year by year, energy issues have become the focus of global attention. In order to solve the crisis of energy depletion, the development and utilization of various renewable energy sources is a top priority, among which wind power generation is one of the most important ways to develop environmentally friendly energy sources around the world. [0003] In the existing wind turbines, they can be mainly divided into two different forms: horizontal axis and vertical axis. Among them, the horizontal axis wind turbine means that the rotation axis of the fan is parallel to the ground, while the vertical axis wind turbine means that the rotation axis of the fan is parallel to the ground. The axis of rotation is perpendicular to the ground. Generall...

AI Technical Summary

Problems solved by technology

However, the V-shaped cross-section is not only unfavorable for processing and manufacturing, but also causes stress concentration on the pivot plate 180 when exposed to wind, so the structure is relatively fragile, and the support frame 160 used to increase the structural strength will inevitably increase the manufacturing cost. burden

Therefore, designers are often trapped in these two dilemmas, unable to break through

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