Title:
VERTICAL SHAFT WINDMILL AND VERTICAL SHAFT WIND POWER GENERATION DEVICE
Document Type and Number:
Japanese Patent JP2022047136
Kind Code:
A
Abstract:
To increase inflow of airflow toward areas near blade tips, improve maximum rotational torque, and improve rigidity against bending moment of support materials in a vertical shaft windmill in which each support materials connecting a blade to a rotation center member extends from a rotor center part to the blade tip obliquely.SOLUTION: A vertical shaft windmill has blades 3 parallel to a rotation axis O extending in a vertical direction of a rotation center member 2 and each blade 3 and the rotation center member 2 are connected by support materials 4. The rotation center member 2 is located in a rotor center part which is a vertical center of a rotor 5. The blade 3 has a lift type cross sectional shape. The support material 4 obliquely extends from the rotation center member 2 to a vicinity of a blade tip. A shape of a cross section, which is perpendicular to a rotation axis 4 of the support material 4, is a plate-like shape which curves protruding in a direction facing the rotation axis.SELECTED DRAWING: Figure 1
Inventors:
ITO TAKESHI
Application Number:
JP2020152881A
Publication Date:
March 24, 2022
Filing Date:
September 11, 2020
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F03D3/06
Attorney, Agent or Firm:
Shuji Sugimoto
Takeo Tsutsumi
Daisuke Kaneko
Hiroki Taniguchi
Kenichi Nakata
Yuka Kobayashi
Shinji Nakao
Takeo Tsutsumi
Daisuke Kaneko
Hiroki Taniguchi
Kenichi Nakata
Yuka Kobayashi
Shinji Nakao
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