JP2006037898A - Vertical shaft type wind power generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vertical shaft type windmill using a control mechanism of blades of a vertical type windmill enabling self-start from a low wind speed, in the vertical shaft type windmill. <P>SOLUTION: The vertical shaft type windmill illustrated in the figure comprises the plurality of blades. To maintain front edge parts of the blades in a certain direction regardless of the position of a blade support body 1, the blade support body 1 and a blade control mechanism support body 3 are synchronously rotated, and a blade control mechanism is started. Lift generated in each of the blades by a wind speed flow is applied in the same rotational direction as that of a rotational shaft of the blade support body 1. As a result, the vertical shaft type windmill has good startability from the low wind speed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to control of blade blades in a vertical axis wind power generator.

  Conventionally, wind turbines for wind power generation are represented by a Dutch wind turbine, a horizontal wind turbine whose rotation axis is horizontal to the wind, and a vertical axis wind turbine whose rotation axis is perpendicular to the wind. It has been known.

Among them, the vertical axis type windmill is a drag type that rotates the windmill with the drag generated on the blade, such as a paddle type or Savonius type, and the lift that rotates the windmill with the lift generated on the blade, such as a Darius type or gyromill type. The type is known. In other words, the former reduces the resistance of the blade blade toward the windward and rotates the windmill by the drag difference, while the latter rotates the windmill by the lift generated in the blade blade (for example, No. 54-153944).
JP 54-153944 A

However, in a vertical axis drag type wind turbine, when the circumferential speed ratio (blade blade tip speed / wind speed) is 1, no moment is generated to rotate the wind turbine beyond that, and even if the wind speed increases, the circumferential speed ratio is 1 or more. The number of rotations could not be obtained and power generation efficiency was poor. In a vertical axis lift type windmill, when the peripheral speed ratio is 1 or less, the aerodynamic characteristics of the windmill deteriorate and the moment for turning the windmill decreases. In addition, the starting moment is small, and starting from a stopped state is very difficult.

In order to improve the power generation efficiency by improving the shape and configuration of the blade blade, for example, there is a publication number JP-A-2001-65446. The present invention is a vertical axis lift type windmill, and a blade blade is constituted by a set of a plurality of blade blades to increase the moment of turning the windmill.

However, in this wind turbine, since the blade group is composed of a plurality of blade blades, there is a problem that the number of parts increases and the cost is high, and the leading edge of the blade blade is always in the windward direction like a horizontal axis wind turbine. It cannot be turned, and it has not reached the horizontal axis lift type windmill efficiently.

In order to solve the above-mentioned problems, the angle of the blade blade is controlled, the lift generated in the blade blade is applied to the moment of turning the windmill, the windmill is rotated efficiently, and the wind turbine for wind power generation has high power generation efficiency. Is to provide.

The object of the present invention is to provide a wind turbine for wind power generation in which a plurality of blade blades are provided at fixed angles around the rotation shaft in a plane perpendicular to the vertical rotation shaft. This is achieved by having a mechanism that always faces the windward side.

The above object of the present invention can be achieved by having a mechanism capable of changing the mounting angle of the blade blade with respect to the wind speed flow.

According to the present invention, since a single straight blade is used as the blade blade, the blade blade can be manufactured at a lower cost than the propeller blade.
According to the present invention, since the wind is not cut as in the case of the propeller type, a wind power generator with less operation noise can be realized.

ADVANTAGE OF THE INVENTION According to this invention, it is possible to control the attachment angle | corner of a blade blade by the rotation speed of a rotating shaft, or a wind speed, etc., and it can implement | achieve a highly efficient wind generator with good startability from low wind speed flow.

In a plane perpendicular to the vertical rotation axis, a blade blade having a plurality of rotation axes in the blade length direction can be rotated in parallel with the vertical rotation axis at a predetermined angle with the vertical rotation axis as a rotation center. A wind turbine for vertical axis wind power generation characterized in that a plurality of wind turbines are arranged.

FIG. 1 is a basic configuration diagram of the present invention. In FIG. 1, the blade supports 1 and 2 have the same radius, are fixed on a plane orthogonal to the blade blade support rotating shaft 6, and the blade blades 12 are arranged at equal angular intervals on the outer periphery in parallel to the rotating shaft 6. Deploy. The blade blade 12 has a blade blade rotating shaft 7 and is supported by the blade supports 1 and 2 in a rotatable state.

The blade control mechanism support 3 is attached to the blade synchronization mechanism rotation shaft 5 in a rotatable state, and fixes the blade synchronization mechanism rotation shaft 5 to the offset support 18. The blade blade support rotating shaft 6 is attached to the offset support 18 so as to be rotatable at an offset distance A parallel to the blade synchronization mechanism rotating shaft 5.

The other end of the blade synchronization mechanism rotating shaft 5 is fixed to the windmill rotor 19 as shown in FIG. The windmill rotating body 19 is fixed to the windmill rotating shaft 8, and the wind rudder 13 is attached to an appropriate position.

The offset distance A is the distance B between the blade blade rotating shaft 7 and the blade blade support rotating shaft 6 and the distance C between the blade control mechanism rotating shaft 9 and the blade synchronization mechanism rotating shaft 5, whichever is shorter, and the control rod 10 , Etc. is a distance that does not interfere with other mechanisms such as the offset support 18.

The blade control mechanism support 3 and the blade blade support rotating shaft 6 are synchronously rotated by the synchronization mechanism 4 in the same rotational speed and in the same direction. The synchronization mechanism 4 has a synchronization position changing mechanism.

2 and 3 are explanatory views of the blade control mechanism. A control sleeve 11 is fixed to the end of the blade blade rotating shaft 7 in parallel with the blade width of the blade blade 12.

A blade blade attached to the blade support 1 in a state in which the blade control mechanism shaft 9 can be rotated in parallel with the blade blade rotation shaft 7 at the same angular interval as the blade support 1 at the outer peripheral portion of the blade control support 3. The rotary shaft 7 is attached at a position shifted by an angle α (see FIG. 2) from the opposite position. A control rod 10 is fixed to the blade control mechanism shaft 9 in a direction orthogonal to the blade control mechanism shaft 9.

The control rod 10 is inserted into the control sleeve 11 so as to be freely movable.

By operating the synchronous position changing mechanism and changing the relative position (angle α) of the blade supports 1, 2 and the blade blade control mechanism support 3, the blade mounting angle changes.

4 and 5 show an embodiment in which the control sleeve 11 and the control rod 10 are changed to a blade blade control link 210, a control link 211, and a connection rotation pin 212. The blade blade 12 fixed to the blade blade control link 210 is shown in FIGS. The mounting angle β is an appropriate angle of 90 ° + α to 180 °.

  6 and 7 show an embodiment of the synchronization mechanism 4 and the synchronization position changing mechanism in the device of the present invention. The synchronization gear 101 is fixedly attached to the blade blade support rotating shaft 6 and the blade control mechanism support 3 is mounted. The synchronization gear 102 is fixedly attached. The synchronous gear 101 and the synchronous gear 102 are connected by an endless belt synchronous chain 103, and are synchronously rotated in the same rotational speed and the same rotational direction.

  A synchronization position control gear 104 and a sagging prevention tensioner 105 are arranged on the endless belt synchronization chain 103. The synchronous position change driving body 20 is operated according to the wind speed, the position of the synchronous position control gear 104 is changed, the relative positions of the synchronous gear 101 and the synchronous gear 102 are changed, and the angle of the blade blade 12 is changed.

FIG. 8 and FIG. 9 show an embodiment of claim 4 which has a plurality of support rotating shafts and uses an endless belt chain. The endless belt chain A 51 and the endless belt chain B 52 have the same circumferential length and are synchronously rotated in the same direction at the same circumferential speed. A necessary number of attachments 55 for supporting the blade blade rotating shaft 7 and the blade control mechanism shaft 9 are attached to each endless belt chain.

A blade blade rotating shaft 7 is supported on an attachment 55 arranged in an endless belt chain B 52 in a rotatable state, and a control sleeve 11 is fixed to an end portion of the blade blade rotating shaft 7 in parallel with the blade width of the blade blade 12. To do.

The blade control mechanism shaft 9 is attached to the attachment 55 arranged in the endless belt chain A 51 at a position shifted by an angle α (see FIG. 8) from a position facing the blade blade rotation shaft 7 in a state where the blade control mechanism shaft 9 can rotate. A control rod 10 is fixed to the blade control mechanism shaft 9 in a direction orthogonal to the blade control mechanism shaft 9. The control rod 10 is inserted into the control sleeve 11 so as to be freely movable.

The synchronization mechanism, the synchronization position changing mechanism, the offset distance A, and the like are the same as in the first embodiment.
FIG. 10 shows an embodiment in which the blade control mechanism is arranged in two stages.

Vertical axis wind turbines are generally introduced as monuments because of their low efficiency, but the vertical axis wind turbines of the present invention can be expected to be more efficient than horizontal axis wind turbines, and they can be introduced as full-scale vertical axis wind turbines. Be expected.

Overall configuration diagram (Example 1) Figure 1 Front view Figure 1 Side view Wing control mechanism explanatory drawing 2 Front view Wing control mechanism explanatory drawing 2 Side view Example of synchronization mechanism and synchronization position change mechanism Example of synchronization mechanism and synchronization position change mechanism Example using endless belt chain Front view Example using endless belt chain Side view Example using blade control mechanism in two stages

Explanation of symbols

1 Wing support 1
2 Wing support 2
3 Blade control mechanism support 4 Synchronization mechanism and synchronization position change mechanism
5, 5A, 5B Blade synchronization mechanism rotating shaft 6, 6A, 6B Blade blade support rotating shaft 7 Blade blade rotating shaft 8 Windmill rotating shaft 9 Blade control mechanism shaft 10 Control rod 11 Control sleeve 12 Blade blade 13 Wind steering 14 Generator 15 Output Gear 16 Bearing or Rotating Bush 17 Fixing Base 18 Offset Support Body 19 Windmill Rotating Body 20 Synchronous Position Changing Drive 21 Synchronous Position Changing Shaft 31 Control Rack 32 Control Gear 33 Chain Tensioner 34 Slide Shaft 41 Hinge 42 Control Link Rod A
51 Endless belt chain A
52 Endless belt chain B
53A, 53B Sprocket 54A, 54B Sprocket 55 Attachment 60 Windmill overall support 61A, 61B Sprocket support
101 Synchronous gear 101
102 Synchronous gear 102
103 endless belt synchronous chain 104 synchronous position changing gear 105 synchronous position changing device 210 blade blade control link 211 control link 212 connecting rotation pin α phase angle between blade support and blade control mechanism support β blade blade attached to blade control link 210 12 mounting angles

Claims (4)

  In a plane perpendicular to the vertical rotation axis, a blade blade having a plurality of rotation axes in the blade length direction can be rotated in parallel with the vertical rotation axis at a predetermined angle with the vertical rotation axis as a rotation center. Wind turbines for vertical axis wind power generation, characterized by being arranged in multiple numbers   2. The wind turbine for vertical axis wind power generation according to claim 1, further comprising a blade control mechanism in which a front edge portion of the blade blade is positioned in the windward direction.   A wind turbine for vertical axis wind power generation, comprising a synchronous position changing mechanism capable of changing the mounting angle of the blade blade according to claim 1 or 2.   A plurality of vertical rotating shafts according to claim 1 are arranged in parallel, a sprocket is attached to the same plane orthogonal to each rotating shaft, an endless belt chain is placed, a plurality of attachments are attached to the endless belt chain, and the blade blade A wind turbine for vertical axis wind power generation, characterized in that the rotary shaft is attached in a rotatable state and has the features of claims 2 and 3.

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