Vertical shaft type windmill and blade for windmill

A vertical shaft and vane technology, applied in the field of starting mechanism, can solve the problems of device complexity, battery life damage, noise increase, etc., and achieve the effect of simple structure, improved starting performance and improved starting performance

Inactive Publication Date: 2007-03-28
INTPROP BANK CORP (JP)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0027] Therefore, when the state of weak wind continues for a long time, the power of the battery is consumed and the life of the battery is highly likely to be damaged.
In addition, if it becomes impossible to start to maintain the voltage of the battery, the windmill will continue to be in a state of being unable to rotate for a long time, which will damage the expectations of customers, and the meaning of installing a windmill will also be lost.
[0028] In addition, the wind power generator described in Patent Document 5 requires an auxiliary motor and a gear mechanism, which leads to problems of complexity of the device and increase in noise.

Method used

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  • Vertical shaft type windmill and blade for windmill
  • Vertical shaft type windmill and blade for windmill
  • Vertical shaft type windmill and blade for windmill

Examples

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Embodiment Construction

[0055] Hereinafter, the structure of the vertical-axis windmill and the blade for windmills concerning this invention is demonstrated. Fig. 1 is an external perspective view of a vertical axis windmill and blades for the windmill.

[0056] As shown in FIG. 1 , the vertical axis windmill 10 is provided with: a mounting part 12 installed on a utility pole or other poles 8; a fixed shaft 14 fixed together with the mounting part 12; a generator 16 arranged on the fixed shaft 14 Upper end; blade 18, which converts wind speed into lift force to generate torque; support arm 20, which has a streamlined section, supports blade 18 from up and down; outer ring sleeve 22, installs support arm 20; torque transmission cover 24, covers the outer ring The torque of the drum 22 is transmitted to the generator 16 .

[0057] In the example shown in FIG. 1 , a speed increaser 26 is attached to the input shaft of the generator 16 , and the rotation of the outer sleeve 22 is accelerated by the spe...

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PUM

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Abstract

A vertical shaft type windmill having excellent startability and high torque coefficient and a blade for the windmill. The windmill comprises a wind receiving plate (40) having a surface receiving wind and an openable pivot (42) and on which a centrifugal force generated according to the rotational speed of the blade (18) generating lift acts in the closing direction and an energizing means (spring (44), etc.) energizing a force to open the wind receiving plate (40) to the wind receiving side. Accordingly, since the wind receiving plate (40) is opened and the windmill functions as a drag type windmill when the rotational speed of the blade (18) is low, the startability of the lift type windmill is increased, and when the rotational speed of the blade (18) is high, the wind receiving plate (40) is automatically closed and the windmill is allowed to function as a lift type windmill.

Description

technical field [0001] The invention relates to a starting mechanism of a lift type windmill. Background technique [0002] Straight airfoil vertical-axis windmills, like horizontal-axis propeller-type windmills and egg-beating (darrieus) windmills, are lift-type windmills with excellent theoretical energy conversion efficiency. There are many advantages of small wind power generation devices ranging from watts to tens of kW. On the other hand, however, there is a disadvantage of lack of self-starting ability in a light wind of about 1 to 3 m / s. [0003] As a windmill with excellent self-starting ability, there are windmills using drag-type blades represented by barrel-type (savonius) windmills. Since conversion efficiency is very low, it tends to have low practical value as a power generating device. [0004] Therefore, various devices have been proposed for improving the self-starting ability, which is an inherent disadvantage, in a straight airfoil vertical axis windmi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/00F03D3/06F03D7/06F03D3/00
CPCF03D7/06F05B2240/214F03D3/005Y02E10/74
Inventor 横井正
Owner INTPROP BANK CORP (JP)
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