Title:
WINDMILL AND WIND POWER GENERATING DEVICE
Document Type and Number:
Japanese Patent JP2023115519
Kind Code:
A
Abstract:
To provide a windmill which can improve the conversion efficiency of rotational energy.SOLUTION: A windmill comprises a shaft, a blade and a support material. The windmill is rotatable around a center axis of the shaft. The blade has a blade main body part extending along an axial direction being a direction of the center axis. The blade main body part includes a front edge being an end of a front side in a rotation direction of the windmill, and a rear edge being an end of a rear side in the rotation direction in a cross-sectional view perpendicular to the axial direction. The support material connects the shaft and the blade main body part. The support material has a front end being an end of a front side in the rotation direction, and a rear end being an end of a rear side in the rotation direction. A linear line passing an intermediate point between the front end and the rear end, and parallel with an extension direction of the support material intersects with a blade chord line at the rear edge side rather than a center point of the blade chord line which connects the front edge and the rear edge.SELECTED DRAWING: Figure 1
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Inventors:
ITO TAKESHI
Application Number:
JP2022017769A
Publication Date:
August 21, 2023
Filing Date:
February 08, 2022
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F03D3/06
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office