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Windmill with relative shift between vane and rotation axis

A technology of rotating shafts and blades, applied in the field of windmill blades, can solve the problems of increasing complexity and cost, and achieve the effect of simple structure, simple production and low cost

Inactive Publication Date: 2010-06-23
俞嘉华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is: the use of too many rotation shaft bearings increases the complexity and cost of production

Method used

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  • Windmill with relative shift between vane and rotation axis
  • Windmill with relative shift between vane and rotation axis
  • Windmill with relative shift between vane and rotation axis

Examples

Experimental program
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Embodiment Construction

[0018] figure 1 Shown is a blade of the invention with an elliptical autorotation displacement hole. In the figure, proper selection of the long and short axis of the ellipse will directly affect the operation of the blades and even the performance of the entire windmill. Appropriately increasing the length of the minor axis of the ellipse can make the operation of the blade softer, and if the long and minor axes of the ellipse are the same, it becomes a circle. In order to prevent the axial movement between the blade and the blade rotation axis, the method of slotting on the circumference of the ellipse can be adopted, but a cam must be added at the position corresponding to the blade rotation axis and the groove.

[0019] figure 2 It is a flat blade with an elliptical rotation and displacement hole of the present invention. The flat blade is advantageous when the wind blade is in an upwind state.

[0020] image 3 It is the blade of the present invention with a rectang...

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Abstract

Aiming at providing a windmill which is simple in structure and can be dispensed with a rotation shaft bearing, the invention discloses a windmill with relative shift between the vane and the rotation axis. The invention adopts the technical scheme that oval rotation shift holes are arranged at the two end faces of the vane, the minor axis diameter of the ellipse is bigger than the diameter of the rotation shaft, the major axis diameter of the ellipse is parallel to the surface of the vane, and the vane is sleeved in the rotation shaft through the oval rotation shift holes. With above structural characteristics, the windmill has the advantages that the vane realizes rotation relative to the rotation axis through the oval rotation shift holes arranged at the two end faces of the vane and can drive the vane frame to revolve through a shift lever. The windmill has the advantages that the connection between the vane and the vane rotation shaft is simplified and the rotation shaft bearing can be omitted, so the windmill can be simple to manufacture and the manufacturing cost can be reduced. The windmill is suitable for a wind power generating set.

Description

technical field [0001] The invention relates to a windmill of a wind power generating device, in particular to a blade of the windmill. Background technique [0002] Chinese Patent Publication (Report) No. CN: 2067768, Publication (Report) Date: December 19, 1990, the name of the invention: a windmill with blades capable of self-rotation and revolution, classification number: F03D3 / 00, the application discloses a The invention relates to a windmill with blades capable of self-rotation and revolution, belonging to the technical field of wind energy development and utilization. The key points of the technology adopted are: because the blades are asymmetrical on both sides of the rotation axis, the wind-receiving area on the wide side is large, which makes the blades lean against the bar in the downwind and break away from the bar in the headwind, so that the wind energy can be used most effectively. [0003] Chinese Patent Publication (Report) No.: CN1789704, Publication (Rep...

Claims

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Application Information

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IPC IPC(8): F03D3/00F03D3/06F03D9/00
CPCY02E10/72Y02E10/74Y02P70/50
Inventor 俞嘉华俞霁邱小真邱小鹰陈瑜何敏婕
Owner 俞嘉华
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