Windmill

Patent · Tue Mar 10 00:00:00 EST 1987

OSTI ID:6672669

Hsech-Pen, L

A windmill is described comprising: a supporting frame; vertical shaft portions coaxially connected in series to form an integrated vertical transmission shaft rotatably mounted in the supporting frame; fan blades each transversely pivotedly mounted on the vertical shaft portion; a sweeping cleaner fixed on the lower portion of the vertical transmission shaft; a power generator having a set of gears for accelerating rotation speed as driven by the vertical transmission shaft and formed on the lower end of the transmission shaft; and a high-speed braking clutch operatively braking the rotation of the transmission shaft and the power generator. The improvement is described which comprises: the fan blade formed with two bending edges respectively longitudinally protruding from the two vertical edges of the fan blade in a direction opposite to the rotation direction of the fan blade under wind pressure. It is formed with a horizontal shaft having its inner end pivotedly mounted in a roller bearing within a horizontal bush of the vertical shaft portion and its outer end pivotedly mounted in a vertical link suspensively holding the horizontal shaft about the vertical shaft portion. The inner end of the horizontal shaft of the fan blade is formed with a vertical rod thereunder to be operatively obstructed by a limiting rod transversely extending outwards from the horizontal bush of the vertical shaft portion when feathering the fan blade.

• Assignee: NOV; NOV-87-051324; EDB-87-071296
• Patent Number(s): US 4649284
• OSTI ID: 6672669
• Resource Relation: Patent File Date: Filed date 7 Feb 1985
• Country of Publication: United States
• Language: English

Related Subjects

17 WIND ENERGY
WIND TURBINES
DESIGN
OPERATION
ACCELERATION
ELECTRIC GENERATORS
GEARS
MECHANICAL TRANSMISSIONS
RODS
ROTATION
SHAFTS
SUPPORTS
TURBINE BLADES
VELOCITY
MACHINE PARTS
MACHINERY
MECHANICAL STRUCTURES
MOTION
TURBINES
TURBOMACHINERY
170602* - Wind Energy Engineering- Turbine Design & Operation