Savonius wind rotor of small-type wind driven generator

Abstract

The invention discloses a Savonius wind rotor of a small-type wind driven generator, which is characterized by including at least two blades, a strut and connecting pieces, wherein all blades are connected with the strut through the connecting pieces; the orthographic projection of an edge line at the upper end part of each blade on a vertical plane passing through the axis of the strut is a curved line, a polygonal line or a straight line; the horizontal level of the projection corresponding to the ends of the edge lines, close to the strut, is D1, while the horizontal level of the projection corresponding to the ends of the edge lines, far away from the strut, is D2; and D1 is larger than D2. According to the structure of the wind rotor disclosed by the invention, the weight of the blades is light, and the cost of the wind rotor is lowered. The structure of the wind rotor disclosed by the invention enables the wind rotor to be lighter so as to facilitate starting the wind driven generator system and improving the generation power, reduces the vibration of the wind rotor during the working process, reduces the energy loss caused by the vibration, and facilitates the generation rate of the generator. Moreover, the blades of the wind rotor disclosed by the invention are artistic in appearance.

Description

technical field [0001] The invention relates to a wind wheel, in particular to a wind wheel used for a Sarnius small wind power generator. Background technique [0002] In the prior art, a wind rotor of the Savonius type is used in a vertical axis wind turbine in a wind turbine. [0003] Wind wheels of the traditional Sarnius style, such as Figure 15 to Figure 25 As shown, the wind rotor of the Sarnius type is composed of pillars, blades, long connectors, and short connectors. Two independent blades are connected to the pillars through the long connectors and short connectors, and the pillars are located between the two blades. The blade of this kind of wind wheel is a kind of curved surface, and the line of its upper end edge projected on the vertical plane passing the pillar axis is a horizontal straight line. When the wind wheel rotates, it rotates with the axis of the pillar as the rotation axis. [0004] The wind rotor of this kind of traditional Sarnius type has the...

AI Technical Summary

Problems solved by technology

[0004] The wind rotor of this kind of traditional Sarnius type has the following defects: 1. It vibrates greatly at high wind speed. In the wind speed of 10 m / s, the vibration of the wind rotor can be clearly seen; adverse effects, thereby reducing the power generation and the life of the entire power generation system

2. The wind wheel of the traditional Sarnius style is not beautiful enough

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