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Title:
OPENABLE AND CLOSEABLE BLADE FOR VERTICAL-AXIS WIND TURBINE
Document Type and Number:
WIPO Patent Application WO/2019/017723
Kind Code:
A1
Abstract:
The present invention relates to an openable and closeable blade for a vertical-axis wind turbine and, more specifically, to an openable and closeable blade for a vertical-axis wind turbine, wherein: an upper and a lower blade (3) (4), each having a blade closing portion curvedly formed at the front end thereof, are vertically pivotally hinged to the upper and the lower side of a base frame (2); a ball screw device (5) operated by a driving motor (8) is installed in the base frame (2); and rotating links (6) (7) for vertically pivoting the upper and the lower blade (3) (4) according to movements of a nut of the ball screw device (5) are hinged between the inner surfaces of the upper and the lower blade (3) (4) and the nut, respectively, whereby: when the upper and the lower blade are opened, the blades can be smoothly rotated even by a breeze, so that the efficiency of power generation can be significantly improved; and when the upper and the lower blade are closed, the blades can safely withstand strong winds such as in a typhoon, so that the durability thereof can be significantly improved.

Inventors:
SON, Ki Tae (1F 10, Mandeok 3-ro 23beon-gilBuk-gu, Busan, 46562, KR)
Application Number:
KR2018/008206
Publication Date:
January 24, 2019
Filing Date:
July 20, 2018
Export Citation:
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Assignee:
SON, Ki Tae (1F 10, Mandeok 3-ro 23beon-gilBuk-gu, Busan, 46562, KR)
International Classes:
F03D3/00; F03D3/06; F03D7/06
Domestic Patent References:
WO2002033253A22002-04-25
Foreign References:
KR20130057521A2013-06-03
JP2016194255A2016-11-17
KR101381303B12014-04-04
JP2005535824A2005-11-24
Attorney, Agent or Firm:
JO, Chi Hoon (1210, 327 Teheran-ro,Gangnam-gu, Seoul, 06150, KR)
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