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Vertical axis windmill

A vertical axis and windmill technology, applied to wind turbines, wind turbines, wind turbine components, etc. that are at right angles to the wind direction, can solve problems such as shortened blade length, obstruction of basic windmill functions, and reduced area rotated by the wind.

Inactive Publication Date: 2005-07-13
EBARA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the length of the blades is also shortened, and the area rotated by the wind is also reduced, which hinders the basic function of the windmill.

Method used

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  • Vertical axis windmill
  • Vertical axis windmill
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Experimental program
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Embodiment Construction

[0043] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0044] exist figure 1 Among them, a Darius-type windmill 3 as a vertical axis windmill is installed on a base 2 firmly fixed to the ground by a fixing member 1 .

[0045] In this Darius type windmill 3, the blade 4 that obtains the rotational force against the wind is formed by a plurality of arms (in the example shown in the figure, it is arranged in upper, middle, and lower layers: the upper arm is indicated by a symbol 5U, The middle arm is indicated by 5M, and the lower arm is indicated by 5L) is supported on the rotating shaft 6 and the housing 7.

[0046] Here, in the case of a conventional vertical axis windmill, the rotating shaft is supported inside the housing, radially supported by radial bearings, and axially supported by the lowest thrust bearing.

[0047] Also, in the past bearings, in order to avoid interference between the arm and the housin...

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PUM

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Abstract

The present invention relates to a vertical axis windmill, in which a casing (7) is extended above the lowermost arm (5L), a radial bearing (BI) is fixed on the outside of the casing (7), and the radial bearing ( BI) Install the arm (5L) so as to be rotatable relative to the housing (7). It does not reduce the wind receiving area and does not interfere with other components, which can eliminate the unstable state of the overhanging area.

Description

technical field [0001] The present invention relates to a vertical axis windmill in which the direction of the rotation axis is substantially perpendicular to the air flow (wind), such as a Darrieus type windmill. Background technique [0002] The axis of rotation of the vertical axis windmill extends in the vertical direction. In a vertical axis windmill supporting such a rotating shaft, the lowermost part of the rotating shaft is supported by a thrust bearing, and the uppermost part of the rotating shaft is supported by a radial bearing. [0003] Here, in order to support the rotating shaft as the rotating body with the radial bearing, it must be fixed and installed in the housing as the fixing member. [0004] In the past, radial bearings were only provided in the area enclosed by the housing. In addition, in the radial bearing provided inside the case, the outer ring side is fixed by the case, and the inner ring side pivotally supports the rotating shaft. In addition,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D3/00F03D11/00
CPCF03D3/005F05B2240/214F03D80/70Y02E10/74F03D3/00
Inventor 木村克己安藤嘉彦今福贤明丸田芳幸后藤正典平田和也市原坚治杉山和彦樱井希美铃木幸雄
Owner EBARA CORP