JP2011058370A - Savonius wind power generator and savonius wind turbine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a Savonius wind power generator and a Savonius wind turbine used for the Savonius wind power generator, recovering wind power energy by a wind turbine stored in a box, compactly controlling the box itself in a wind direction and efficiently converting the wind power energy into electric energy by simplifying control over the excessive rotation of the wind turbine during strong wind. <P>SOLUTION: This wind power generator includes as constituent elements, the wing turbine, a wind turbine direction control section, an excessive rotation control section, a power transmission device, a generator, and a tower. The wind direction control section 5 is composed of the side plates 11 of the box 14 formed by an area ratio rotating the box 14 on the windward, air guide paths 19, and a chevron-shaped wind receiving projection 12 with the center of the box 14 in a horizontal direction as an apex. The Savonius wind turbine 4 is configured by alternately arranging two types of aerofoil blades, namely, arcuate blades 26, 28 and ship bottom-like blades 27, 29, and a restriction flow passage 30 is formed between aerofoil profiles having different shapes. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to wind power generation technology that converts wind energy into electrical energy, and more particularly to a Savonius type wind power generator and a Savonius type windmill used in the Savonius type wind power generator.

As disclosed in Patent Document 1, a Savonius type windmill that has been proposed conventionally has a pair of blades having an arc surface symmetrically with respect to a vertical axis that is rotatably supported, and is attached to each blade. A slit parallel to the vertical axis is perforated to reduce the eddy current of the blade rotation axis, and as shown in Patent Document 2, an arc-shaped wind receiving plate corresponding to the blade is connected to the input axis (vertical axis). They are joined point-symmetrically over two upper and lower stages.
On the other hand, the two pairs of Savonius type windmills used in the aeration apparatus rotate the stirring members connected below the shafts of each pair in opposite directions with the belts rotating in opposite directions. Patent Document 3 discloses a technique for suppressing the rotation of the lens.
From the techniques of Patent Documents 1 and 2 described above, it is impossible to create a technical idea of high torque expression by combining blades having different airfoil shapes.
Further, the technology disclosed in Patent Document 3 is that each pair of Savonius-type wind turbines merely transmits wind energy input by rotating in the same direction to the lower screw, and collects wind energy obtained from both wind turbines. The technology for inputting to the generator is not disclosed at all, and the blade airfoil is also generally known.
Further, as the wind direction control of the windmill, as disclosed in Patent Document 4 and Patent Document 5, control by the tail is used.
Further, as the over-rotation control of the wind turbine, as proposed in Patent Document 6, the blade pitch angle of the wind turbine blade is changed, or as proposed in Patent Document 7, the rotation of the blade is stopped. Etc.
Such wind direction control technology and over-rotation control technology proposed in Patent Documents 4 to 7 cannot be applied to a pair of Savonius type wind turbines housed in a box.

JP-A-6-323237 JP-A-2005-83206 Utility model registration No. 3131007 JP 2006-132514 A JP 2006-322383 A JP 2008-184932 A JP 2007-046575 A

  According to the present invention, wind energy can be recovered by a windmill housed in a box, the box itself can be compactly controlled in the direction of the wind, and overwind control of the windmill in a strong wind is simplified to efficiently convert wind energy into electrical energy. It is an object of the present invention to provide a Savonius type wind turbine generator that can be converted and a Savonius wind turbine used in the Savonius wind turbine generator.

To achieve the above object, a Savonius-type wind power generator according to claim 1 of the present invention includes a windmill, a wind direction control unit, an overspeed control unit, a power transmission device, a generator, and a tower. In the wind power generator as a component,
The windmill is installed in a box of a windmill device that is rotatably supported around the output shaft of the power transmission device at the top of the tower, and wind power is introduced into each individual from the left and right wind guide paths. It consists of a pair of Savonius type windmills whose rotational directions are pivotally supported in a mutually reverse rotation manner, and whose rotational force is transmitted to a differential gear device that hangs down from the lower surface of the box,
The wind direction control unit includes a wind guide path that is opened to the left and right sides at a required front position from a rotation center of the box of the wind turbine device (the output shaft center), and a side surface from the rotation center to the wind guide path start end. A side plate formed by an area ratio that turns the box upwind by increasing the area of the side surface from the center of rotation to the rear end of the area, and a wind guide slope on the left and right with the center in the left-right direction of the box as the apex It consists of a mountain-shaped wind receiving projection to form,
The over-rotation control unit includes a bearing disposed above and below an intermediate portion of both wind guide slopes of the mountain-shaped wind receiving projections in a box of a wind turbine device, a support shaft supported by the bearing, and the support shaft The wind guide path is closed to be freely opened and closed, and includes a wind guide plate that guides wind power to the rotating side of the windmill, and a drive source that drives the support shaft,
The power transmission device includes a pair of bevel gears, one of which is attached to the respective vertical rotation shafts of both Savonius type wind turbines and the other of which is attached to the horizontal shaft, and a differential gear having each horizontal shaft serving as an input shaft. And a speed increasing device joined between the output shaft of the differential gear device and the input shaft of the generator.
The invention described in claim 2 is the Savonius type wind power generator described in claim 1,
In the Savonius type windmill, the Savonius type windmill is configured by arranging a plurality of blades symmetrically with respect to a vertical rotation axis.
The blade is composed of two pieces of two types of airfoils arranged alternately with arc-shaped blades and boat-bottomed blades, the inner surface of one arc-shaped blade and the other blade-shaped blade A throttle channel perpendicular to the inner surface of one of the boat-bottom blades is formed between the lower ends of the outer surface and the outer surface.
The Savonius type windmill according to claim 3 is:
In a Savonius type windmill in which a plurality of blades are arranged symmetrically with respect to a vertical rotation axis,
The blade is composed of two pieces of two types of airfoils arranged alternately with arc-shaped blades and boat-bottomed blades, the inner surface of one arc-shaped blade and the other blade-shaped blade A throttle channel perpendicular to the inner surface of one of the boat bottoms is formed between the lower ends of the outer surface and the outer surface.

According to the Savonius-type wind power generator of the present invention, the Savonius-type windmills arranged on the left and right sides in the box are arranged so that their rotational directions are opposite to each other. The reaction force due to the force is offset, the box is not shaken, and wind energy can be acquired with a stable wind receiving posture, and the rotational energy from both Savonius-type wind turbines can be Wind power is guided to the outside, and the average rotation speed of both rotation speeds is output from the output shaft of the differential gear device with high rotational efficiency. Since the rotational speed of the machine can be easily increased and input to the generator, the characteristics of the drag wind turbine can be brought out, and efficient power generation can be realized.
In addition, with respect to fluctuations in the wind direction, it is caused by the expression of torque toward the windward attitude by the ratio of the side plate area of the box to the rotation center of the box (center of the output shaft) and the wind force guided from the wind guide path on the wind direction side. The box is automatically turned to the windward posture by the expression of torque induced by the rotational force of the rotating Savonius type windmill.
Further, in the over-rotation control unit, each wind guide path opened in the swash plate (wind guide slope) of the mountain-shaped wind receiving projection is blocked by the wind guide plate, so that over-rotation of both internal Savonius type wind turbines is prevented. In addition, the wind pressure resistance is balanced by the left and right with respect to the center of rotation of the box by the mountain-shaped wind receiving projections, so the box itself only follows the windward without being shaken. Out is simple.
On the other hand, the Savonius-type windmill described in claim 3 includes the expression of torque due to the viscous resistance of the fluid (wind) in the throttle channel, the wind force ejected from the channel, and the wind force introduced from the outer surface of the arcuate blade. However, high torque is generated by acting on the inner surface of the bottom-shaped blade positioned at the lower side (one side) at a substantially right angle and the wind force that has once acted is further positioned at the upper side (the other side). The expression of torque by acting on the inner surface of the boat-bottomed blade substantially at right angles without slipping is sequentially repeated, so that wind energy can be efficiently obtained as rotational torque.

It is explanatory drawing of the state which fractured | ruptured the leg of the Savonius type | mold wind power generator of this invention, or a part of tower. It is a top view of the windmill apparatus in FIG. It is explanatory drawing of the differential gear apparatus used for the power transmission device in this invention. It is a cross-sectional explanatory drawing of the Savonius type | mold windmill provided in the windmill apparatus of this invention. It is a schematic diagram of the power transmission with the differential gear apparatus with both windmills. It is a front view of the Savonius type | formula wind power generator B of the other Example of this invention. FIG. 7 is a plan view of FIG. 6.

One embodiment of the Savonius type wind power generator according to the present invention will be described below with reference to the accompanying drawings.
As shown in FIGS. 1 and 2, the Savonius type wind power generator A of the present invention includes a windmill device 3, a wind direction control unit 5, an overspeed control unit 6, a power transmission device 7, and a generator 8. The tower 1 is a component.
Wind turbines 4 and 40 are provided in the box 14 of the wind turbine device 3 that is rotatably supported around the output shaft 35 of the power transmission device 7 at the top of the tower 1, and the right and left air guide paths 19 and 19. A pair of Savonius type is constructed in which wind power is introduced to each individual, the rotational directions of the individual are pivotally supported in a mutually reverse rotation manner, and the rotational force of both is transmitted to the differential gear unit 33 suspended from the lower surface of the box 14. A windmill,
As shown in FIG. 2, the wind direction control unit 5 includes air guide paths 19 and 19 that are opened to the left and right sides at a required front position from the rotation center (the output shaft center) 18 of the box 14 of the windmill device 3. The area of the side surface from the rotation center 18 to the rear end is made larger than the area of the side surface from the rotation center 18 to the air guide passages 19, 19 at the start end, and the box 14 is formed at an area ratio that turns the box 14 upwind. The side plates 11 and 11 and the mountain-shaped wind receiving projections 12 that form a wind guide slope on the left and right with the center in the left-right direction of the box 14 as a vertex,
The over-rotation control unit 6 includes bearings 20 and 20 disposed above and below an intermediate portion of both wind guide slopes of the mountain-shaped wind receiving projection 12 in the box 14 of the wind turbine device 3, and the bearings 20 and 20 have shafts. The supporting shafts 21 and 21 to be supported, and the air guide plates 22 and 22 that are integrated with the supporting shaft 21 so as to be openable and closable, and that guide wind force to the rotating side of the windmills 4 and 40; Drive sources 23 and 23 for driving the support shafts 21 and 21;
As shown in FIG. 1, the power transmission device 7 is a bevel gear in which one of the two Savonius-type wind turbines 4 and 40 is axially attached to the vertical rotation shaft 35 and the other is attached to the horizontal shafts 34 and 34. The pair 32, 32, the differential gear device 33 in which each horizontal shaft 34, 34 serves as an input shaft, and the speed increaser joined between the output shaft 35 of the differential gear device 33 and the input shaft of the generator 8. 36.
In order to automatically control the wind receiving posture of the pair of Savonius type wind turbines 4 and 40 in the Savonius type wind power generator of the present invention toward the wind at the top of the tower 1 via the box 14, power transmission is required. In the output gear 35 of the differential gear device 33 in the device 7, the entire box 14 (wind power device) is rotatably supported and the output shaft 35 must be supported safely and stably. The bearing including the output shaft 35 is supported by a bearing metal from the one that pivotally supports the whole (wind turbine device) with a bearing metal, and the lower surface of the box 14 is stably balanced by a leg 38 having a sliding ball 39 at the lower end. For example, it can support and turn freely.
In addition, since the drive sources 23 and 23 used in the over-rotation control unit 6 exist in the turning system, an actuator using hydraulic pressure or pneumatic pressure passes through a swivel joint. In addition to the above, those driven by solar power generation, those driven by a part of wind power generation through a turning contact, and the like.
Further, the throttle flow path formed between the deformed airfoil blades in the Savonius type wind turbine of the present invention is selected from a parallel one to a throttle tapered shape.

Next, an embodiment of the Savonius type wind power generator A of the present invention will be described in more detail.
As shown in FIG. 1, a tower 1, a windmill device 3 that is rotatably supported at 360 ° in all directions at the top 2 of the tower 1, and a pair of Savonius type windmills 4 disposed in the windmill device 3, 40, the wind direction control part 5, the overspeed control part 6, the power transmission device 7, and the generator 8 are comprised as a component.
First, the wind turbine device 3 will be described. The box 14 whose outline is shown in plan view in FIG. 2 is joined to the left and right parallel side surfaces of the upper plate 9 and the lower plate 10 and the both plates 9 and 10 of the outer pentagon. Each side plate 11 and each swash plate 13 joined to the mountain-shaped wind guide slopes of the both plates 9 and 10 to form a front mountain-shaped wind receiving projection 12.
In the box 14 constructed in this manner, the Savonius type wind turbines 4 and 40 are arranged on the upper plate 9 and the lower plate 10 with their vertical rotation shafts 15 rotating in opposite directions. , 17. A differential gear device in which one large bevel gear of a pair of bevel gears 32 perpendicular to the lower ends of each of the vertical rotary shafts 15 is joined and the other small bevel gear is joined and suspended on the lower surface of the box 14. The output shaft 35 of the differential gear device 33 is pivotally supported by a bearing metal 37 provided on the top 2 of the tower 1.
In addition, a sliding ball 39 is rotatably mounted on the lower end of the telescopic part 31 of the leg 38 suspended from four equal parts on the lower surface of the box 14 to turn the windmill device 3 stably and lightly. Support freely.
In addition, the power transmission part which concerns on the vertical rotating shaft 15 with which the box 14 is hung on the lower surface is coat | covered with a cylindrical cover, as shown with a virtual line.

Here, the wind direction control unit 5 which is a feature of the present invention will be described. As shown in FIG. 2, the air guide path 19 opened to the left and right sides at the required front position from the rotation center 18 of the box 14, A side plate formed by making the area of the side surface from the rotation center 18 to the rear end larger than the area of the side surface from the rotation center 18 to the start end of the air guide path 19 to rotate the box 14 to the windward. 11 and a mountain-shaped wind receiving projection 12 that forms a wind guide slope (by the swash plate 13) on the left and right with the center in the left-right direction of the box 14 as a vertex.
When the wind direction control unit 5 receives wind pressure from one of the left and right sides, torque toward the windward is generated by the area ratio of the side plates 11 and is also guided from the wind guide path 19 in the wind direction. The wind force rotates the Savonius type wind turbine 4 or 40 on the side, and the driving force develops a torque toward the windward of the box 14, and the box 14 is automatically generated at the top 2 of the tower 1 by such an action. Rotate until facing upwind.
Further, after facing the windward, the wind force is guided to the wind guide path 19 along the left and right swash plates 13 of the mountain-shaped wind receiving projection 12 as shown by the arrows in FIG. The wind is guided to the outer half from the center of 40 and is not guided to the inner half from the center of both Savonius type wind turbines 4, 40, so that the guided wind does not become a resistance to rotation of both Savonius type wind turbines 4, 40. .
In addition, since the wind guide plate 22 guides the wind turbines 4 and 40 outward, the two Savonius wind turbines 4 and 40 are rotated reversely with each other in a stable wind receiving posture of the box 14.

Next, the over-rotation control unit 6 will be described. The over-rotation control unit 6 includes a bearing 20 joined to the upper and lower sides of the swash plate 13 of the mountain-shaped wind receiving projection 12 on the air guide path 19 side, and the bearing 20. A support shaft 21 that is supported by the support shaft 21, a wind guide plate 22 that is integrated with the support shaft 21 so as to open and close the air guide path 19, and a drive source (such as a motor) 23 that drives the support shaft 21. When a cut-out wind speed (normally 15 to 20 m / s) is developed due to a strong wind, etc., the support shaft 21 is driven by the drive source 23 in accordance with a command from an appropriate sensor, and each wind is blown from the inside of the box 14 by the wind guide plate 22. The guide 19 is closed to protect the Savonius-type wind turbines 4 and 40 from being affected by strong winds, and the wind is guided toward the wind from the center of the mountain-shaped wind receiving projection 12 to the left and right swash plates 13. Without causing the windmill device 3 to rotate, Strong winds measures Te is intended to be made.
That is, in the over-rotation control unit 6, each air guide path 19 that opens to the swash plate (wind guide slope) 13 of the mountain-shaped wind receiving projection 12 is closed by the air guide plate 22, so that both internal Savonius type wind turbines 4, 4. 40 is prevented from over-rotating, and the box 14 itself is loaded by the mountain-shaped wind receiving projections 12 in a balanced manner on the left and right with respect to the rotation center of the box 14 so that the box 14 can be upwinded without shaking. Since it only follows, cut-out during strong winds is simplified.

On the other hand, the Savonius type windmills 4 and 40 of the present invention used in the windmill device 3 will be described. As shown in FIG. 4, an upper end plate (shown in FIG. 1) 24 joined to the upper part of the vertical rotating shaft 15. The blades whose upper and lower ends are joined to the lower end plate 25 joined to the lower portion of the vertical rotating shaft 15 at a required interval with respect to the upper end plate 24 are two types of blades symmetrically with respect to the vertical rotating shaft 15. Four sheets (two each) are arranged alternately.
Therefore, since the two windmills 4 and 40 are symmetrically arranged, two types of blades will be described for the left Savonius type windmill 4.
That is, one arcuate blade (hereinafter referred to as an arc blade) 26 and one boat bottom-like blade (hereinafter referred to as a boat bottom blade) having a deformed airfoil with a phase of 90 ° with respect to the arc blade 26. 27, and the other arc blade 28 of the same shape airfoil is arranged symmetrically with respect to the vertical rotating shaft 15 with respect to the one arc blade 26, and further, On the other hand, the other boat bottom blade 29 having the same airfoil shape is arranged symmetrically with respect to the vertical rotation shaft 15. In this state, the inner surface (concave surface) of one arc blade 26 and the other boat bottom blade 29 are arranged. A throttle channel 30 that faces the inner surface of one boat bottom blade 27 at a right angle is formed between the lower ends of the outer surface and the outer surface.
Therefore, neither the wind force introduced from the outer surface (convex surface) of one arc blade 26 nor the wind force ejected from the throttle channel 30 acts on the inner surface of one ship bottom blade 27 without slipping substantially at right angles as indicated by arrows. High torque is generated by the action of the viscous resistance in the throttle passage 30 and the action of the wind once acting on the inner surface of the other boat bottom blade 29. 28 is established in the relationship between the boat bottom blade 27 and the boat bottom blade 29, and is repeated sequentially, so that wind energy can be efficiently obtained as rotational torque.

The Savonius type windmill 4 thus constructed is mass-produced, the Savonius type windmill 4 is disposed on the left side of the box 14 of the windmill device 3, and the Savonius type windmill 4 with the top and bottom of the Savonius type windmill 4 reversed. In the left Savonius type windmill 4, the wind force introduced from the left air guide path 19 of the box 14 rotates the windmill 4 to the left as indicated by an arrow, and to the right In the Savonius type windmill 40, the wind force introduced from the right wind guide path 19 of the box 14 rotates the windmill 40 to the right as indicated by an arrow, and the rotational reaction forces of the two windmills 4 and 40 during power generation are offset. As a whole, the wind turbine device 3 is stably held without being shaken.
As described above, in the wind turbine device 3, the wind turbines 4 and 40 are rotated by wind energy, and the rotational energy is converted into electric power input to the generator 8 via the power transmission device 7.

Here, the power transmission device 7 will be described in detail. As shown in FIGS. 3 and 5, the power transmission device 7 is a bevel gear disposed at the lower end of each vertical rotating shaft 15 of both wind turbines 4 and 40. A pair 32, a differential gear device 33 joined and suspended on the lower surface of the box 14, a horizontal shaft (input shaft) 34 connecting the differential gear device 33 and the bevel gear pair 32, and a differential gear device 33. The output shaft 35 and a speed increaser 36 connected between the input shafts of the generator 8.
Accordingly, the wind energy input from both wind turbines 4 and 40 is transmitted from both vertical rotary shafts 15 to the bevel gear pair 32 and input to both horizontal shafts 34 of the differential gear device 33, and the average rotation speed of both is applied to both. Are output from the output shaft 35 of the differential gear unit 33 and input to the gearbox 36 in a high torque state.
In FIG. 4, for convenience of explanation, the postures of both wind turbines 4 and 40 are shown symmetrically. However, during actual operation (during power generation), the stationary posture is caused by the difference in the action of wind force on both wind turbines 4 and 40. It is separate.
The Savonius type windmills 4 and 40 shown in the present embodiment are of a type characterized by two types of airfoils. However, in the Savonius type wind power generator A of the present invention, a generally known Savonius is known. Of course, a type windmill can also be adopted.

Next, a Savonius type wind power generator B, which is another embodiment, is different in the form of the rotation center 18 of the windmill device 3 and the transmission system of the power transmission device 7.
As shown in FIGS. 6 and 7, the tower 1 is formed in a columnar shape, and the air direction control unit 5, the over-rotation control unit 6, the air guide path 19, and the air guide plate 22 are the same as described above. A wind turbine device 3 including a pair of Savonius-type wind turbines 4 and 40, that is, a support shaft 41 that pivotally supports the box 14 so as to be able to rotate 360 ° in all directions is erected.
The windmill device 3 is in front of the required dimension (front of the center of gravity) from the middle of the vertical rotating shafts 15 and 15 of the pair of Savonius type windmills 4 and 40 in the box 14 (center of the output shaft 35 of the differential gear device 33). It is pivotally supported by the support shaft 41 via both bearings 42 and 43 attached to the portions of the upper plate 9 and the lower plate 10 on the center line in the left-right direction.
The wind direction control unit 5 guides the wind force to the wind guide path 19 along the left and right swash plates 13 of the mountain-shaped wind receiving projection 12 as indicated by the arrows in FIG. Since the wind is guided to the outer half from the center of the wind turbine and is not guided to the inner half of the two Savonius wind turbines 4 and 40, the two Savonius wind turbines 4 and 40 rotate reversely with each other in a stable wind receiving posture. Is done.
On the other hand, the transmission system of the power transmission device 7 is housed in the wind turbine device 3 that is pivotally supported by the support shaft 41 of the tower 1, and the rotational force of both the Savonius type wind turbines 4, 40 is transmitted from the vertical rotation shafts 15. A bevel gear pair 32 is input to the differential gear unit 33 from each horizontal shaft 34, and a timing pulley 44 mounted on the output shaft 35 of the differential gear unit 33 is connected to the input shaft 45 of the speed increaser 36. It is transmitted to the attached timing pulley 46 via a timing belt 47 meshed with both, and further transmitted from the output shaft of the speed increaser 36 to the rotating shaft of the generator 8 via the coupling 48.
Here, the speed increaser 36 and the generator 8 are suspended from a pedestal 49 provided on the lower plate 10 of the box 14, but the present invention is not limited to this. The speed increasing device 36 includes a bevel gear pair 32 and a differential gear device 33 on the upper surface of the upper plate 9 of the upper plate 9 of the box 14. And a generator 8 can be provided to form a transmission system.

In the Savonius type wind power generator B configured as described above, the rotational force of the pair of Savonius type wind turbines 4 and 40 in the wind turbine device 3 is transmitted to the generator 8 housed in the rotating system via the power transmission device 7. It is transmitted and converts wind energy into electrical energy. The obtained electrical energy is converted from a current collector (not shown) such as a slip ring provided on the peripheral surface of the tower 1 to a general power supply device (not shown). ) Through the ground.
The timing pulleys 44 and 46 may be sprocket wheels, and the timing belt 47 may be a chain that meshes with both sprocket wheels.

According to the Savonius type wind power generator of the present invention, the wind turbine device has a compact and simple structure, and can achieve efficient power generation by inputting the rotational force from a pair of Savonius type wind turbines to the generator, and the box itself. The wind direction can be controlled, and the overspeed control of the windmill in a strong wind is easy, so it can contribute to the activation of the wind power generation industry due to its excellent structural durability.
The Savonius-type windmill of the present invention is also characterized by a combination of two types of airfoils, and can contribute to the windmill manufacturing industry due to the technology for generating high torque.

DESCRIPTION OF SYMBOLS 1 Tower 2 Top part 3 Windmill apparatus 4, 40 Savonius type windmill 5 Wind direction control part 6 Over-rotation control part 7 Power transmission device 8 Generator 9 Upper board 10 Lower board 11 Side board 12 Yamagata wind receiving protrusion 13 Swash plate 14 Box 15 Vertical rotation shafts 16, 17 Bearing 18 Rotation center 19 Air guide path 20 Bearing 21 Support shaft 22 Air guide plate 23 Drive source 24 Upper end plate 25 Lower end plate 26, 28 Arc blade 27, 29 Ship bottom blade 30 Throttle channel 31 Extendable Part 32 Bevel gear pair 33 Differential gear unit 34 Horizontal shaft 35 Output shaft 36 Speed up gear 37 Bearing metal 38 Leg 39 Sliding ball 41 Support shaft 42, 43 Bearing 44, 46 Timing pulley 45 Input shaft 47 Timing belt 48 Coupling 49 Pedestal A, B Savonius wind power generator

Claims (3)

In a wind turbine generator including a windmill, a wind direction control unit, an overspeed control unit, a power transmission device, a generator, and a tower,
A wind turbine is provided in a box of a wind turbine device that is rotatably supported around the output shaft of the power transmission device at the top of the tower, and wind power is introduced into each individual from the left and right air guide paths, and each individual rotation. It consists of a pair of Savonius type windmills whose directions are pivotally supported in a mutually reverse rotation manner, and whose rotational force is transmitted to a differential gear device that hangs down from the lower surface of the box,
The wind direction control unit includes a wind guide path that is opened to the left and right sides at a required front position from a rotation center of the box of the wind turbine device (the output shaft center), and a side surface from the rotation center to the wind guide path start end. A side plate formed by an area ratio that turns the box upwind by increasing the area of the side surface from the center of rotation to the rear end of the area, and a wind guide slope on the left and right with the center in the left-right direction of the box as the apex It consists of a mountain-shaped wind receiving projection to form,
The over-rotation control unit includes a bearing disposed above and below an intermediate portion of both wind guide slopes of the mountain-shaped wind receiving projections in a box of a wind turbine device, a support shaft supported by the bearing, and the support shaft The wind guide path is closed to be freely opened and closed, and includes a wind guide plate that guides wind power to the rotating side of the windmill, and a drive source that drives the support shaft,
The power transmission device includes a pair of bevel gears, one of which is attached to the respective vertical rotation shafts of both Savonius type wind turbines and the other of which is attached to the horizontal shaft, and a differential gear having each horizontal shaft serving as an input shaft. A Savonius type wind power generator comprising a device and a speed increasing device joined between an output shaft of the differential gear device and an input shaft of the generator. In the Savonius type windmill, the Savonius type windmill is configured by arranging a plurality of blades symmetrically with respect to a vertical rotation axis.
The blade is composed of two pieces of two types of airfoils arranged alternately with arc-shaped blades and boat-bottomed blades, the inner surface of one arc-shaped blade and the other blade-shaped blade 2. A Savonius type wind power generator according to claim 1, wherein a throttle channel perpendicular to the inner surface of one of the boat-bottom blades is formed between the lower ends of the two and the outer surface. In a Savonius type windmill in which a plurality of blades are arranged symmetrically with respect to a vertical rotation axis,
The blade is composed of two pieces of two types of airfoils arranged alternately with arc-shaped blades and boat-bottomed blades, the inner surface of one arc-shaped blade and the other blade-shaped blade A Savonius type windmill characterized in that a throttle channel perpendicular to the inner surface of one of the boat bottoms is formed between the lower ends of the outer surface and the outer surface.

Images