JP6628620B2 - Rectifying plate for vertical axis wind turbine, position adjusting device for rectifying plate, and wind power generator using the same - Google Patents

Description

  The present invention relates to a straightening plate used for improving the efficiency of a vertical axis windmill or a wind power generation device using the same, a position adjustment device for the straightening plate, and a wind power generation device using the same. The rectifying plate is arranged on a side surface of the vertical axis wind turbine such that a direction of the wind flowing into the vertical axis wind turbine and the vertical axis wind turbine can be set at a predetermined angle, and this arrangement is performed. The present invention relates to a rectifying plate and a rectifying plate position adjusting device for a vertical axis wind turbine that adjusts according to a wind direction and thereby improves the efficiency of the vertical axis wind turbine, and a wind power generator using the same.

  2. Description of the Related Art Conventionally, wind turbines have been used that generate power by rotating a wind turbine using wind power and converting the rotation into electricity by a generator connected to the wind turbine. In general, wind turbines used in the wind power generators and the like have a configuration in which a rotation axis of the wind turbine is configured to be parallel to a direction in which wind flows (horizontal axis wind turbine), There is known a structure configured vertically to a flowing direction (vertical axis windmill).

  Among them, the vertical axis type wind turbine is capable of rotating the wind turbine regardless of the wind inflow direction without providing a means for following the wind inflow direction. Is often used as a driving source.

  And, in the wind turbine for wind power generation as described above, by using a wind collecting plate or a baffle plate for the purpose of improving the power generation efficiency or the like, even if the wind is weak, it is possible to respond to the wind conditions. In some cases, a technique for increasing the amount of wind flowing into the wind turbine or increasing the wind speed is used. As such a technique, for example, prior arts disclosed in Japanese Patent Application Laid-Open No. 2010-196600 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2009-287516 (Patent Document 2) are disclosed.

  Among the above prior arts, Patent Literature 1 discloses a technique of “improving the energy conversion efficiency of a vertical axis wind turbine”, which aims to “establish a forest around the vertical axis wind turbine and spread the wing surface radially from the vertical axis wind turbine. A wind collecting portion that forms a flow path that guides wind passing around the vertical axis wind turbine to the vertical axis wind turbine by a plate-shaped wind collecting blade arranged in the wind direction; And a diffusion prevention section that forms diffusion prevention surfaces that prevent diffusion to the vertical axis above and below a flow path of the wind guided by the wind collection section to the vertical axis windmill.

  In addition, among the above prior arts, Patent Literature 2 discloses a technique of “providing a vertical-axis wind turbine generator that can be reduced in size and can generate large power”. A cylindrical impeller in which a plurality of blades are arranged in a ring parallel to the axis and in an annular shape, and a plurality of air guide plates are arranged in parallel to the axial direction and inclined at a fixed angle on the outside of the cylindrical impeller. And a guide vane formed in the shape of a vertical axis, the cylindrical impeller is fixed so as to be rotatable about the axis, and the plurality of blades have a semicircular front end on the rotation direction side. The rear end side is flattened to form a bucket, the front end in the rotation direction of one blade is connected to the rear end of the previous blade of the blade, and the guide vane supports a pair of air guide plates. The mounting angle of the plurality of air guide plates provided on the slope of the The blade of the impeller is disposed so as to coincide with the angle of the rear end side blade plate, and the number of air guide plates is provided so as to match the number of blades of the cylindrical impeller. A plurality of stators having windings are fixed, and a rotor having magnetic poles is fixed to the inner peripheral surface of the cylindrical rotary blade.

JP 2010-196600 A JP 2009-287516 A

  In the technology described in the prior art documents as described above, it is necessary to arrange a plurality of wind collecting portions and wind guide plates so as to surround the wind turbine around the wind turbine, and the problem that the entire device becomes large is problematic. there were.

  That is, according to the technology disclosed in Patent Document 1, a wind collecting portion that stands around a vertical axis wind turbine, and a plate that is disposed above and below the vertical axis wind turbine and that is substantially orthogonal to the rotation axis of the vertical axis wind turbine A configuration provided with a diffusion prevention portion having a shape like a letter is adopted. For this reason, the wind collecting portion and the diffusion preventing portion surround the wind turbine itself, so that there is a problem that the entire device becomes large.

  Further, in the technique disclosed in Patent Document 2, a plurality of air guide plates are arranged in parallel to the axial direction and at a certain angle to form a cylindrical shape outside the cylindrical impeller as described above. A configuration with guide vanes is adopted. Therefore, since each of the plurality of air guide plates surrounds the periphery of the cylindrical impeller, there is a problem that the entire device becomes large as in the case of Patent Document 1.

  On the other hand, the inventor of the present invention was conducting basic research for analyzing the flow of wind around a vertical axis type wind turbine of a type (hybrid type) that utilizes both drag and lift. As will be described later, streamlines are dense around a specific position of the rotating surface of the blade of the vertical axis type wind turbine, and when the direction of such dense streamlines is manipulated, each of the above patents is disclosed. As described in the literature, it is possible to increase the amount of air and / or the flow speed to the torque-generating (blade) portion of the vertical axis wind turbine without using a plurality of wind collecting sections and a baffle plate. We found a new finding that it is possible. And the operation of the streamline as described above is possible by using a single straightening plate, and the generator is connected to the vertical axis wind turbine that has operated the streamline using such a straightening plate. When a wind power generator is configured, a new finding has been found that the efficiency of the wind power generator can be significantly improved.

  Therefore, the present invention aims to solve the above-mentioned problems based on the above-mentioned new knowledge, and does not require a plurality of large-scale wind guide plates or wind collecting plates as described above. By providing a single rectifying plate that controls the flow of wind around the wind, the amount of wind or the speed of the flow that flows into the portion of the vertical axis wind turbine that is generating torque is increased, and this is used as a wind power generator. When used, the purpose is to further improve the power generation efficiency.

  The present invention is a straightening plate of a vertical axis wind turbine having a blade that rotates around a rotation axis provided vertically, and a solution of the above-described problem is that the straightening plate is configured in a rectangular flat plate shape, One side of the vertical side which is the windward side of the rectifying plate, when viewed from the rotation axis, is substantially 90 degrees from the windward direction of the wind flowing into the vertical axis windmill to the rotation direction of the vertical axis windmill. At the front position in the leeward direction by d from a position slightly away from the outer edge of the rotating surface of the blade in the azimuth of degree, provided on the side surface of the blade in parallel with the direction of the rotation axis, and d is When the diameter of the rotating surface of the blade is D, it is in the range of 0 <d <0.1D, and the other side on the vertical side that is the leeward side of the rectifying plate is from the front position, The rotation axis is outside the line connecting the windward direction and the leeward direction. The rectification plate is provided in a direction within a range of approximately 15 degrees to 25 degrees from the windward side to the leeward direction, and a length of a vertical side of the rectifying plate is the rotation axis of the blade along the rotation axis. And the horizontal side of the rectifying plate is formed in a direction perpendicular to the rotation axis, and the length L of the horizontal side of the rectifying plate is 0.5D <L < This is effectively achieved by the straightening plate of a vertical axis wind turbine, which is characterized by being in the range of D.

  Furthermore, the solution of the above-mentioned problem is achieved more effectively by a vertical axis windmill provided with the straightening plate, or by a wind power generator using the vertical axis windmill.

  Further, the present invention is a position adjusting device of the straightening plate, wherein the solution of the above-described problem is that the position adjusting device includes at least a tail, a plurality of frames, and the straightening plate, and the plurality of frames are On the outer edge side of the blade of the vertical axis wind turbine, the tail and the rectifying plate are rotatably supported around the rotation axis of the vertical axis wind turbine, and the plurality of frames at least a front edge of the rectifying plate. A leading edge support frame that supports, a trailing edge support frame that supports the trailing edge of the current plate, a tail support frame that supports the tail, and an auxiliary frame that is connected to the trailing edge support frame and the tail support frame. And the auxiliary frame connects the trailing edge support frame and the tail support frame, and moves the current plate to the front edge of the current plate with respect to the axial direction of the tail support frame. From the rear axis to the rear edge, and according to the wind conditions around the vertical axis wind turbine, the rotation moment about the rotation axis applied to the tail and the rotation axis applied to the current plate. Due to the surrounding moment, the leading edge of the current plate is effectively achieved by the position adjusting device for the current plate disposed at the front position.

  Furthermore, the solution of the above-mentioned problem is achieved more effectively by a vertical axis windmill provided with the straightening plate position adjusting device, or by a wind power generator using the vertical axis windmill.

  In addition, the present invention is a flow shield used for a vertical axis wind turbine including the straightening plate, and the above-mentioned object is achieved by solving the above problem, wherein the flow shield has a horizontal side concentric with a rotation surface of the blade. An arc-shaped, generally rectangular shape, the vertical side of the flow blocking plate has a length substantially equal to the length of the blade in the rotation axis direction along the rotation axis. And is disposed on the outer edge side of the blade in parallel with the rotation axis, and the horizontal side of the flow blocking plate is slightly along the outer edge of the rotation surface of the blade from the outer edge of the rotation surface. The length of the side of the horizontal side of the flow shield plate is set so that the length of the side of the horizontal axis of the windshield plate from the windward direction of the wind flowing into the vertical axis type windmill is viewed from the rotation axis. Vertical with the rectifying plate, sized to cover up to approximately 45 degrees in the opposite direction to the direction Effectively achieved by shield flow plate used in the type windmill.

  Furthermore, the solution of the above-mentioned problems can be achieved more effectively by a vertical axis windmill provided with the flow shield, or by a wind power generator using the vertical shaft windmill provided with the flow shield.

  Further, the present invention is a position adjusting device for the flow straightening plate and the flow blocking plate, and the solution to the above-mentioned problem is that the position adjusting device comprises at least a tail, a plurality of frames, and the straightening plate, The plurality of frames, on the outer edge side of the blades of the vertical axis wind turbine, rotatably support the tail, the rectifying plate, and the flow blocking plate around the rotation axis of the vertical axis wind turbine, the plurality of frames, The frame is a leading edge support frame that supports at least a leading edge of the current plate, a trailing edge support frame that supports a trailing edge of the current plate, a tail support frame that supports the tail, and the trailing edge support frame. An auxiliary frame connected to the tail support frame, and a flow shield supporting frame supporting the flow shield, the auxiliary frame connects the trailing edge support frame and the tail support frame. The current plate is supported at an angle of approximately 20 degrees from the front edge to the rear edge of the current plate with respect to the axial direction of the tail support frame, and the current plate is supported in accordance with a wind condition around the vertical axis wind turbine. The front edge of the rectifying plate is formed by the rotation moment about the rotation axis applied to the tail fin, the moment around the rotation axis applied to the rectifier plate, and the moment about the rotation axis applied to the flow interceptor plate. Position, and covers the plate surface of the flow blocking plate from the windward direction of the wind flowing into the vertical axis windmill to an azimuth of approximately 45 degrees in a direction opposite to the rotation direction of the vertical axis windmill. This is effectively achieved by a position adjustment device for the flow straightening plate and the flow blocking plate held in such a position.

  Further, the above object can be achieved by a vertical axis windmill including a position adjusting device between the rectifying plate and the flow blocking plate, or a vertical axis wind turbine including a position adjusting device between the rectifying plate and the flow blocking plate. This is more effectively achieved by a wind power generator using

  In the present invention, as described above, by arranging the flow straightening plate at one position on the outer edge of the vertical axis windmill at a specific position in a specific direction, the torque of the vertical axis windmill is generated. It is possible to increase the amount of air or the speed of the air flowing into the portion where the air flows.

  Therefore, according to the present invention, without requiring a plurality of large-scale wind guide plates or wind collecting plates, by providing a rectifying plate for controlling the flow of wind around the vertical axis wind turbine, the vertical axis type When the amount of wind or the speed of the wind that flows into the portion of the wind turbine that generates torque is increased and this is used as a wind power generator, the power generation efficiency can be further improved.

  And, according to the wind power generator using the above-mentioned rectifying plate, it is possible to obtain an output 1.5 to 1.6 times as compared with the case where the above-mentioned rectifying plate is not used.

  According to the position adjusting device of the current plate according to the present invention, the current plate is disposed in the specific direction and the specific position according to the direction of the wind around the vertical axis windmill. It is possible to easily combine the current plate with the vertical axis windmill to improve the efficiency when used in a wind power generator or the like.

  Further, according to the flow shield plate used in conjunction with the present invention, the flow of the wind which hinders the efficient rotation of the vertical axis wind turbine is blocked, and a part of the blocked flow generates torque of the wind turbine. It is possible to increase the air flow or the flow speed (wind speed) to the part (the blade of the windmill, etc.), and increase the function of the rectifying plate more effectively. It is possible.

  In addition, when the current blocking plate is further combined with a position adjusting device for the flow straightening plate, the direction of the wind around the vertical axis windmill is changed by disposing the current blocking plate together with the position of the current straightening plate. In accordance with the above, it is possible to arrange in a predetermined direction and position, the straightening plate and the current blocking plate can be easily combined with the vertical axis windmill, and further used in a wind power generator or the like. It is possible to improve the efficiency.

It is a figure explaining the basic concept and operation of a current plate concerning the present invention, and Drawing 1 (A) is a top view showing an outline of a streamline around a windmill when a current plate is not arranged, and Drawing 1 (B). FIG. 1C is a top view schematically showing streamlines around the windmill when the rectifying plate is arranged, and FIG. 1C is a top view schematically showing streamlines of wind flowing into the windmill when the rectifying plate is not arranged. FIG. 1 (D) is a top view showing an outline of a streamline of wind toward a blade of a windmill by disposing a current plate. 2A illustrates an example of the outer shape of the current plate according to the present invention, FIG. 2A is a top view, FIG. 2A is a front view, and FIG. 2B is the present invention. 2 (B1) is a top view, FIG. 2 (B2) is a front view, and FIG. 2 (B3) is a side view. . It is a top view showing the positional relationship at the time of arrange | positioning the baffle plate which concerns on this invention on the outer edge side of the blade of a vertical axis windmill. 4A and 4B schematically show a position adjustment device 400 for a flow straightening plate according to the present invention disposed on a vertical axis type wind turbine. FIG. 4A is a top view, FIG. 4B is a front view, and FIG. (C) to (E) are side views schematically showing examples of the arrangement of the tail TA. FIG. 2 is a perspective view illustrating an outer shape of a flow shield according to the present invention. FIG. 6A is a top view showing the positional relationship and the size when the flow blocking plate according to the present invention is arranged on the outer edge side of the blade of the vertical axis wind turbine, and FIG. It is a top view which shows the outline | summary of the effect | action of a flow shield. 7A and 7B schematically show a position adjusting device 700 for a flow straightening plate and a flow blocking plate according to the present invention. FIG. 7A is a top view, and FIG. 7B is a front view. 5 shows the results of a wind tunnel experiment on the effect of the current plate of the present invention. FIG. 9 shows the results obtained by performing wind tunnel experiments on a case where a wind turbine is connected to a vertical axis windmill and a case where there is no current plate and a case where a current plate is provided, and actually measuring the output. FIG. 10 shows an increase in output when a current blocking plate is used in addition to the current plate, as a result of a wind tunnel experiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same components will be denoted by the same reference symbols even in other forms, and duplicate descriptions and configurations may be partially omitted. In addition, in order to facilitate understanding of the present invention, the size or ratio of each component illustrated in the drawings, the scale of the drawings, and the like may be appropriately changed from actual ones in some cases.

  First, the basic concept and operation of the current plate of the present invention will be described with reference to FIG.

  FIG. 1 is a diagram for explaining the basic concept and operation of the current plate SR according to the present invention. FIG. 1A shows an outline of streamlines fl around a windmill when no current plate SR is provided. A top view, FIG. 1B is a top view schematically showing streamlines fl around the windmill when the rectifier SR is arranged, and FIG. 1C is a wind flowing into the windmill when the rectifier SR is not arranged. 1D is a top view schematically illustrating the streamline fl of the wind toward the blade of the windmill by arranging the rectifying plate SR. FIG.

  In FIG. 1, the circle shown by the solid line shows the locus of the rotation surface of the outer edge of the blade of the vertical axis wind turbine viewed from the upper surface of the vertical axis wind turbine VWT. The direction is as shown by the arrow indicated by the solid line (here, clockwise). In FIG. 1, white arrows indicate the direction of flow of the wind into the vertical axis windmill, and thick lines shown by solid lines or curved lines indicate the outline of the flow line fl of the wind.

  The inventor of the present invention was conducting basic research for analyzing the flow of wind around a vertical axis wind turbine of a type (hybrid type) utilizing both drag and lift, and the result is shown in FIG. 1 (A). As described above, in the region A indicated by the dashed line around the vertical axis windmill, the streamline fl is dense, and as the stream progresses downstream, the streamline fl becomes the vertical axis windmill VWT. Was found to be caught behind.

  Therefore, as shown in FIG. 1 (B), the present inventor has provided a rectifying plate SR from the windward side to the leeward side of the area A, and the flow in the area A extends toward the rear of the vertical axis windmill. , So that it can be bent greatly outward.

  As a result, when the rectifying plate SR is not disposed, as shown by an area B indicated by an ellipse indicated by a chain line in FIG. The wind that has flowed linearly into the vertical axis-type wind turbine is rotated by attaching the rectifying plate SR, as shown by an area C indicated by an ellipse indicated by a chain line in FIG. 1D. In the direction of the current plate.

  For this reason, as described above, from the region B to the region C, the flow speed in the rotation direction of the blade of the vertical axis type wind turbine is increased, and the result is that the torque due to drag increases in this portion.

  Therefore, in the present invention, based on the new knowledge as described above, a rectifying plate SR of the vertical axis type wind turbine and a position adjusting device of the rectifying plate SR and a wind power generator using them are configured as described below, The function of a wind power generator provided with a current plate is improved.

  Next, the configuration and arrangement of the current plate SR of the vertical axis wind turbine of the present invention will be described.

  The rectifying plate SR of the vertical axis wind turbine of the present invention is basically formed in a rectangular flat plate shape, as shown in FIG. Here, of FIG. 2, FIG. 2 (A1) shows a top view of the rectifying plate SR, and FIG. 2 (A2) shows a front view.

  The length L (sometimes referred to as a rectifying plate width) of the side constituting the horizontal side of the rectangular shape is represented by D, where D is the diameter of the rotating surface of the blade of the vertical axis wind turbine. Based on the test results described with reference to FIG. 8A described later, it is preferable that the value be in the range of 0.5D <L <D, and it is most preferable that the value be 0.75D.

  In addition, as for the length H of the side constituting the vertical side of the rectangular shape, since the straightening plate SR regulates the flow of the wind into the vertical axis windmill, the blade of the vertical axis windmill is It is desirable that the length be substantially the same as the length along the direction of the rotation axis C.

  There is no particular limitation on the thickness t of the rectangular flat plate constituting the rectifying plate SR. However, the rectifying plate SR of the present invention is intended to guide the wind. Is desirably thin so as not to impede the smooth flow of the wind, and when the thickness t increases in accordance with the configuration of the vertical axis type wind turbine, it constitutes the vertical side of the rectifying plate. It is desirable that the side portions are formed smoothly with respect to the inflow of wind so as not to cause wind resistance.

  Further, the material of the rectifying plate SR is not particularly limited similarly to the above, but the rectifying plate SR of the present invention smoothly guides the wind in accordance with the purpose of the present invention, and the wind speed is reduced. It has a strength that can maintain a certain form even if it increases, and it also operates together with a position adjusting device and the like to be described later. Therefore, for example, a combination of aluminum panels or the like with a honeycomb structure, for example, a Metawell (registered trademark) panel or the like may be used.

  Note that the current plate SR of the present invention basically has a rectangular shape as described above, and is provided at an appropriate distance (rotation radius) from the rotation axis of the vertical axis wind turbine as described above. The vertical side is longer than the horizontal side according to the form of a plurality of rectangular blades formed in parallel in the vertical (vertical) direction. However, the length of each side depends on the length of the vertical side (or vertical direction) of the blade of the vertical axis type wind turbine, the turning radius of the blade, and the like, and the side of the vertical side is horizontal (or vertical side). Direction) may be shorter than the side. Further, for example, when a Darrieus type wind turbine is used as the vertical axis type wind turbine, the rotation axis is adjusted as shown in FIGS. 2 (B1) to (B3) according to the side surface form of the blade. It is also possible to change the form as appropriate, for example, by bending the rectangular current plate in a length direction parallel to the above. Here, FIG. 2B schematically shows a current plate SR of the present invention corresponding to a Darrieus windmill, FIG. 2B1 is a top view, FIG. 2B is a front view, and FIG. B3) shows a side view.

  Next, with reference to FIG. 3, a description will be given of a position where the above-mentioned current plate SR of the present invention is arranged on the outer edge side of the above-mentioned vertical axis wind turbine VWT.

  Here, FIG. 3 is a top view showing the positional relationship when the current plate SR is arranged on the outer edge side of the blade of the vertical axis wind turbine VWT. In FIG. 3, the circle shown by the solid line represents the outer edge of the rotating surface of the blade of the vertical axis wind turbine VWT, as in the case of FIG. 1, and the rotating direction is also clockwise. I have. Similarly, white arrows indicate the direction of flow of wind into the vertical axis wind turbine. Here, the center (rotation axis) of the rotation surface of the blade is represented by C, and the diameter of the rotation surface of the blade is represented by D.

  In FIG. 3, one side (front edge) H1 of the vertical side on the windward side of the rectangular shape forming the current plate SR of the present invention is a rotation axis C at the center of the rotation surface of the blade. , The outer edge of the rotating surface of the blade in an azimuth of approximately 90 ° in the direction of rotation of the vertical axis windmill from the windward direction (direction of azimuth 0 °) of the wind flowing into the vertical axis windmill. Is provided at a front position FP in the leeward direction by a distance d from a position P0 that is W away from the position P0.

  Here, W, which is one of the elements for specifying the front side position FP, expresses the horizontal position of the front edge H1 of the current plate (the horizontal position of the front edge of the current plate). Is preferably as close as possible to the rotation surface of the blade, as shown in FIG. For this reason, it is desirable that the straightening plate front edge lateral position W be as small as possible and set to a size slightly distant from the rotation surface of the blade. However, it is necessary to consider the prevention of a contact event due to an increase in the outer edge of the rotating surface due to an increase in the number of rotations or aging of the wind turbine. Therefore, when the diameter D of the rotating surface of the blade is used as a reference, W = 0. It is also possible to set the size to about 0.05D.

  Similarly, d, which is one of the elements for specifying the front side position FP, represents the front and rear position of the straightening plate front edge H1 (the front and rear position of the straightening plate front edge), and the front and rear reference is the vertical axis type. When viewed from a line perpendicular to the inflow direction of the wind passing through the rotation axis C of the windmill, the windward direction is defined as +, and the windward direction is defined as-. The magnitude of the leading edge front-rear position d of the straightening plate is 0 based on the diameter D of the rotating surface of the blade based on the test result described with reference to FIG. It is preferable that the size is approximately d <0.1D, and it is most preferable that d = 0.05D.

  Another side (rear edge) H2 of the rectifying plate SR on the leeward side on the vertical side connects the leeward direction and the leeward direction from the front position FP of the front edge H1. With respect to the line, it is provided on the leeward side outside from the rotation axis C so as to take an angle θ from the leeward side to the leeward direction.

  Here, θ is an angle formed by the plate surface of the rectifying plate SR with respect to the wind flowing into the vertical axis windmill, and represents a line connecting the leeward direction and the leeward direction as shown in FIG. When it is set as a reference, it indicates the angle at which the flow of the wind is deflected from the windward side to the leeward direction. Further, the sign of θ is + when the trailing edge H2 of the rectifying plate SR moves outward when viewed from the rear of the rotation axis C, and − when it is inside. The angle θ of the plate surface of the rectifying plate SR is preferably in a range of approximately 20 ± 5 degrees based on a test result described with reference to FIG. Is most desirable.

  According to the straightening plate of the present invention configured as described above, by rectifying the wind flowing around the vertical axis wind turbine, a portion of the vertical axis wind turbine that generates torque of the blades Thus, the amount of wind or the wind speed is increased, so that the vertical axis wind turbine can be rotated efficiently. Therefore, when the vertical axis type wind turbine provided with the above-mentioned rectifying plate is used for a wind power generator, as shown in the test results described below with reference to FIG. It is possible to obtain 1.5 to 1.6 times the output. The present invention relates to a drag type vertical axis windmill or a vertical axis type windmill utilizing both drag and lift (for example, a gyromill effect and a Savonius effect as described in Japanese Patent No. 3996945). However, when the present invention is applied to a lifting type vertical axis wind turbine, an effect of improving the starting performance can be expected.

  In addition, the means for arranging the rectifying plate of the present invention at a specific position as described above is not particularly limited, and is not limited to a rectifying plate position adjusting device described later, and any means may be used. It is also possible to use.

  Therefore, for example, a circular rail is arranged around the vertical axis windmill, and the straightening plate and a carrier for transferring the straightening plate are provided on the circular rail, and the direction of the wind flowing into the vertical axis windmill is provided. And the like, and the carrier may be used to arrange the rectifying plate at a predetermined position.

  Next, a description will be given of the position adjusting device for the current plate.

  The position adjusting device for a current plate according to the present invention is for adjusting the position of the current plate described above using torque applied to a tail wing around the vertical axis wind turbine.

  As shown in FIG. 4, the position adjusting device 400 includes at least a tail TA, a plurality of frames F, and the rectifying plate SR, and the plurality of frames F are located outside the blades of the vertical axis windmill. On the edge side, the tail TA and the rectifying plate SR are rotatably held around the rotation axis C of the vertical axis wind turbine VWT, and the tail fin TA and the rectifying plate SR are interposed through the plurality of frames F. The front edge of the current plate SR is connected and formed so as to be held at the front position FP. Here, FIG. 4 shows an outline of the position adjusting device 400 of the rectifying plate SR according to the present invention disposed on the vertical axis wind turbine VWT, and FIG. 4 (A) is a top view and FIG. 4B is a front view, and FIGS. 4C to 4E are side views schematically showing an example of the arrangement of the tail TA. In FIG. 4A, white arrows indicate the direction of flow of wind into the vertical axis wind turbine, and arrows indicated by bold curves indicate blades BL of the vertical axis wind turbine VWT. It shows the direction of rotation (here, counterclockwise).

  Further, more specifically, the plurality of frames F of the position adjusting device 400 of the present invention include a leading edge support frame F10 that supports a leading edge H1 of the rectifying plate SR and a trailing edge H2 of the rectifying plate SR. It comprises a trailing edge support frame F30 for supporting, a tail support frame F50 for supporting a tail described later, and an auxiliary frame F70 for connecting the trailing edge support frame and the tail support frame.

  Among them, the front edge support frame F10 rotatably supports the front edge H1 of the current plate SR around the rotation axis C of the vertical axis wind turbine VWT. Then, as shown in FIG. 4B, the front edge supporting frame F10 is arranged so that the front edge H1 side of the rectangular vertical side constituting the rectifying plate SR is the blade of the vertical axis windmill. On the outer edge side, the upper frame F10U and the lower frame F10D are arranged in pairs so as to be supported from above and below as viewed from the direction along the rotation axis C of the vertical axis wind turbine.

  One end of the upper frame F10U is rotatably connected to the rotation axis C of the vertical shaft wind turbine VWT via an upper bearing UB, and the other end is above the front edge H1 of the rectifying plate SR. It is connected to the. Similarly, one end of the lower frame F10D is rotatably connected to the rotating shaft C of the vertical shaft wind turbine VWT via a lower bearing DB, and the other end is connected to the rectifying plate SR. It is connected below the leading edge H1.

  Next, of the above, the trailing edge support frame F30 supports the trailing edge H2 of the current plate SR so as to be rotatable around the rotation axis of the vertical axis wind turbine. The trailing edge support frame F30 is, like the leading edge support frame F10, a rear edge H2 side of a rectangular vertical side constituting the rectifying plate SR, and is a blade of the vertical axis windmill. And a pair of upper and lower frames F30U and F30D arranged vertically so as to be supported from above and below as viewed from the direction along the rotation axis of the vertical axis wind turbine.

  Further, one end of the upper frame F30U is rotatably connected to the rotation axis C of the vertical shaft type wind turbine VWT via an upper bearing UB, and the other end is above the rear edge H2 of the rectifying plate SR. It is connected to the. Similarly, one end of the lower frame F30D is rotatably connected to the rotating shaft C of the vertical shaft wind turbine VWT via a lower bearing DB, and the other end is connected to the rectifying plate SR. Connected below the trailing edge.

  Next, the tail support frame F50 supports the tail TA so as to be rotatable around the rotation axis C of the vertical axis wind turbine VWT. Here, as described later, the tail TA is a thin plate-like body having a substantially rectangular outer shape, and is basically formed of the same material as the rectifying plate SR. Not something.

  The tail support frame F50 includes an upper frame F50U and a lower frame F50D which are vertically arranged on the outer edge side of the blade of the vertical axis windmill when viewed from a direction along the rotation axis C of the vertical axis windmill. And a vertical connection frame F50V (see FIG. 4 (C) and the like) for connecting one end of the pair on the outer peripheral side of the blade, and the other ends of the upper frame F50U and the lower frame F50D The upper frame F50U is rotatably connected to the rotation axis C of the vertical axis windmill VWT via an upper bearing UB, and the lower frame F50D is a rotation axis of the vertical axis windmill VWT. C is rotatably connected via a lower bearing DB. Further, here, the length of the tail support frames F50U and F50D is not particularly limited, but experimentally, when the diameter of the rotating surface of the blade is D as described above, It has been confirmed that a length that can support the tail TA in the above-described embodiment at a position of about 0.75D in a direction perpendicular to the rotation axis C is desirable. The length of the connection frame F50V is at least larger than the length of the blade in the vertical direction for the purpose of connecting the upper and lower tail support frames (F50U, F50D) on the outer peripheral side of the blade as described above. It is necessary. In the tail support frame F50, the lower frame F50D and the connection frame F50V have the tail TA located rearward (downwind direction) of the outer edge of the blade of the vertical axis windmill, as in the above embodiment. In the case where the tail fin TA is sufficiently supported by the upper frame F50U in a case where the tail fin TA is supported in the upper direction, the tail frame TA may be omitted.

  Further, the tail fin TA is a thin plate-like body as described above, and is supported behind the outer edge of the blade of the vertical axis windmill and in the upper direction toward the end of the upper frame F50U. It has become. In the present invention, the tail TA is positioned in front of the rectifying plate SR around the rotation axis C by the balance between the rotational moment generated by the tail supporting frame F50 and the tail TA and the rotational moment based on the rectifying plate SR. It has a function of arranging the edge H1 at the predetermined front position FP on the outer edge of the vertical axis wind turbine. Therefore, the plate surface of the tail TA is configured to have an angle に 対 し て with respect to the axis of the upper support frame F50U, and the angle 、 and the rectangular vertical side and the horizontal side of the tail TA are formed. The length of the tail TA is previously determined to determine the area of the tail TA, and the rotation moment about the rotation axis C between the tail TA and the tail support frame F50 and the rotation moment based on the rectifying plate SR is calculated. The balance is configured so that the front edge H1 of the current plate SR can be disposed at the front position FP of the outer edge of the vertical axis wind turbine. In the above embodiment, the tail fin TA is supported behind the outer edge of the blade of the vertical axis windmill and in the upward direction as shown in FIGS. 4A to 4C. However, the configuration is not limited to this. Therefore, for example, depending on the position where the vertical axis wind turbine is installed, as shown in FIG. 4D, the vertical axis wind turbine may be supported behind the outer edge of the blade and in the lower direction. Alternatively, as shown in FIG. 4E, the blade may be provided behind and supported in both the upper direction and the lower direction of the outer edge of the blade. In the above-described embodiment, the tail TA is configured such that the length of the vertical side is approximately twice the length of the horizontal side, but there is no particular limitation. Therefore, in combination with the length of the tail support frame (F50U, F50D) or the angle ψ as described above, or as described above, the tail TA is positioned behind the outer edge of the blade as shown in FIG. It is also possible to make appropriate adjustments depending on whether or not it is provided in two places, that is, the upper direction and the lower direction, and to adjust the area and the moment by this.

  Next, among the above, the auxiliary frame F70 connects the trailing edge support frame F30 and the tail support frame F50, and moves the current plate SR with respect to the axial direction of the tail support frame F50. Is supported at an angle of about 20 degrees from the front edge H1 to the rear edge H2. Therefore, the auxiliary frame F70 includes an upper support frame F70U that connects the upper support frame F30U of the rear edge support frame F30 and the upper support frame F50U of the tail support frame F50, and a lower support frame F30 of the rear edge support frame F30. The lower support frame F70D that connects the frame F30D and the lower support frame F50D of the tail support frame F50 provides the above support.

  Therefore, according to the position adjusting device 400 for the rectifying plate SR having the above-described configuration, the tail TA receives the wind in accordance with the wind condition (wind condition) around the vertical axis windmill, and the vertical Rotating in the leeward direction when viewed from the rotation axis C of the shaft type wind turbine VWT, the balance between the rotational moment of the tail fin TA and the tail support frame F50 and the rotational moment based on the rectifying plate SR causes the rectifying plate SR to rotate. The front edge H1 is arranged at the front position FP of the outer edge of the vertical axis wind turbine VWT. The auxiliary frame F70 connects the trailing edge support frame F30 and the tail support frame F50, and moves the current plate SR to the front edge of the current plate SR with respect to the axial direction of the tail support frame F50. As a result of supporting so as to take an angle of about 20 degrees from H1 to trailing edge H2, the position of the rectifying plate SR is adjusted by guiding the leading edge H1 of the rectifying plate SR to the predetermined front position FP. It is possible to do.

  Therefore, according to the position adjusting device 400 for the rectifying plate SR, the rectifying plate SR can be adjusted to an appropriate position around the vertical axis wind turbine VWT, and the rectifying plate SR includes the rectifying plate SR. According to the wind turbine using the wind turbine VWT, it is possible to further improve the power generation efficiency by arranging the rectifying plate SR at an appropriate position.

  Next, the flow blocking plate AO used together with the above-mentioned current plate SR will be described.

  The flow blocking plate AO of the present invention is used together with the flow straightening plate SR to block a part of an inflow of wind that hinders efficient rotation of the wind turbine around the vertical axis wind turbine VWT, and through the flow straightening plate SR. It is another object of the present invention to improve the condition of the wind flowing into the vertical axis wind turbine VWT by guiding a part of the interrupted flow to a portion where the torque of the wind turbine is generated.

  Therefore, as shown in the perspective view of FIG. 5, the center of curvature of the horizontal side L ′ at the installation position of the flow shield plate is concentric with the rotation surface of the blade BL, It has a generally rectangular plate-like shape formed in an arc shape having a radius equal to the distance from the center of the horizontal side L ′ to the rotation axis C, and has a thickness t ′. Is formed thin. The flow blocking plate AO is basically formed of the same material as the current plate SR and the tail TA, but is not particularly limited.

  Further, the side H ′ on the vertical side of the flow shielding plate AO is configured to have a length substantially equal to the length of the blade BL along the rotation axis C in the direction of the rotation axis C, and FIG. As shown in A), it is arranged on the outer edge side of the blade BL in parallel with the rotation axis C. Here, FIG. 6A is a top view showing the positional relationship and the size when the flow blocking plate AO according to the present invention is arranged on the outer edge side of the blade BL of the vertical axis wind turbine. In FIG. 6, the outer edge of the circle indicates the outer edge of the rotation surface of the blade BL of the vertical axis wind turbine VWT, D indicates its diameter, and C indicates the rotation axis. Also, a thick arrow around the circle indicates the direction of rotation, and here represents a case where the circle is rotated clockwise. In the same manner, in the test described below with reference to FIG. 10, an angle indicates a region around the rotation axis C where the flow shielding plate AO blocks a part of the rotation surface of the blade BL. In the case of the present embodiment, the length of the horizontal side L ′ is adjusted to adjust the length of the horizontal side L ′ as described below. It is provided so as to be an area up to 45 ° in the direction opposite to the rotation direction.

  In addition, the horizontal side L ′ of the flow blocking plate AO is disposed along the outer edge of the rotating surface of the blade BL of the flow blocking plate AO, at a position slightly away from the outer edge of the rotating surface, The length of the horizontal side L ′ of the flow blocking plate AO is, when viewed from the rotation axis C, the direction of the wind flowing into the vertical axis windmill from the windward direction (direction of 0 ° in the drawing). The size is formed so as to cover up to approximately 45 degrees in the direction opposite to the rotation direction of the shaft type wind turbine VWT. Note that, here, there is no particular limitation on the position slightly away from the outer edge of the rotating surface, but the flow blocking plate AO and the blade BL are formed of the blade according to the size of the windmill and the like. The distance is such that it does not interfere with each other due to the rotation of the BL or aging, etc., and indicates a distance close enough to improve the condition of the wind contributing to the rotation of the blade by blocking the wind flowing into the vertical axis wind turbine VWT. ing.

  According to the flow blocking plate configured as described above, as shown in FIG. 6B, the following effects can be obtained by combining with the flow rectifying plate. Here, FIG. 6B is a top view showing the outline of the operation of the current blocking plate of the present invention.

  That is, by arranging the flow blocking plate AO of the present invention, in a region A indicated by an ellipse shown by a chain line in FIG. Flows upward, and the inflow of the upward flow of the vertical axis wind turbine increases. As a result, the flow speed in the rotation direction of the vertical axis wind turbine in the region B indicated by the ellipse shown by the chain line in FIG. 6B is increased, whereby the torque obtained by the drag in this portion is increased. become. This effect is further enhanced by combining with the above-mentioned rectifying plate SR, as shown in a test result described later with reference to FIG.

  Therefore, when the flow blocking plate is disposed together with the flow straightening plate, the situation (wind condition) of the wind flowing into the portion of the vertical shaft type wind turbine that generates torque is improved, and the flow straightening plate is more effectively used. According to the wind power generator using the vertical axis windmill in which the rectifying plate and the flow blocking plate are arranged, it is possible to further improve the power generation efficiency of the wind power generator. is there.

  Next, a description will be given of a device for adjusting the position of the straightening plate and the flow blocking plate.

  The position adjusting device 700 for the flow straightening plate SR and the current blocking plate AO according to the present invention arranges the above-described position of the current flowing plate SR and the position of the current blocking plate AO at predetermined positions around the vertical axis windmill VWT. The basic structure is the same as that of the above-described position adjusting device 400 for the current plate SR.

  However, in the position adjusting device 700 for the current plate SR and the current blocking plate AO according to the present invention, in addition to the above-described position adjusting device 400 for the current plate SR, as shown in FIG. A flow shield plate support frame F90 is added. Here, FIG. 7 shows an outline of the position adjusting device 700 for the flow straightening plate SR and the flow blocking plate AO according to the present invention, and FIG. 7A is a top view and FIG. (B) is a front view.

  That is, in the position adjusting device 700 for the flow straightening plate SR and the flow blocking plate AO according to the present invention, the flow blocking plate support frame F90 moves the flow blocking plate AO around the rotation axis C of the vertical axis wind turbine VWT. It is rotatably supported. The flow-shielding plate support frame F90 includes an upper support frame F90U that supports the upper horizontal side of the flow-shielding plate AO at one end, and one end of the lower horizontal side of the flow-shielding plate AO. The other end of the upper support frame F90U is rotatably connected to a rotation shaft C of the vertical shaft type wind turbine VWT to an upper bearing UB. The other end of the lower support frame F90D is rotatably connected to the rotation shaft C of the vertical shaft type wind turbine VWT to the lower bearing DB.

  At the same time, the flow shield plate supporting frame F90 is provided with one end of the horizontal side L ′ of the flow shield plate AO on the opposite side of the tail blade TA with respect to the rotation axis C from the tail blade support frame F50. It is disposed so as to be on an extension line along the axis, and the other end of the horizontal side L ′ of the flow blocking plate AO is located on one side of the horizontal side L ′ on the side where the rectifying plate is provided. Are arranged in a direction away from the rotation axis C at a 45 ° direction.

  Therefore, in the position adjusting device 700 for the flow straightening plate SR and the current blocking plate AO according to the present invention configured as described above, the area and the angle 上 記 of the tail fin TA are adjusted to adjust the vertical axis wind turbine VWT. According to the surrounding wind conditions, the rotational moment about the rotation axis C applied to the tail fin TA, the moment about the rotation axis C applied to the rectifying plate SR, and the rotation axis C applied to the flow blocking plate SR. By adjusting the position of equilibrium with the surrounding moment, the front edge H1 of the rectifying plate SR is arranged at the front side position FP, and the wind of the wind flowing into the vertical axis windmill is moved through the plate surface of the flow blocking plate AO. It can be held at a position so as to cover a direction of approximately 45 degrees in the direction opposite to the rotation direction of the vertical axis windmill from above.

  Therefore, according to the position adjusting device 700 for the flow straightening plate SR and the flow blocking plate AO, it is possible to adjust the flow straightening plate SR and the flow blocking plate AO to appropriate positions around the vertical axis windmill. According to the wind power generator using a vertical axis windmill including the above-mentioned current plate SR and the current interrupting plate AO, the power generation efficiency can be improved by disposing the current plate SR and the current interrupting plate AO at appropriate positions. Can be further improved.

  Next, test results of the present invention will be described with reference to FIGS.

  FIG. 8 shows the results of a wind tunnel experiment on the effect of the current plate SR of the present invention. 8A shows the relationship between the rectifier plate width L and the output increase, and FIG. 8B shows the relationship between the rectifier plate angle θ and the output increase. FIG. 8C shows the relationship between the front edge front / rear position d of the rectifier plate and the output increase, and FIG. 8D shows the relationship between the rectifier plate front edge lateral position W and the output increase. Here, the output ratio is the output ratio when there is no rectifying plate and the output ratio when the rectifying plate is arranged, and the above symbols also correspond to those shown in connection with FIG. 3 described above. .

  As shown in FIG. 8A, the rectifying plate width L is 0.75D and the output ratio is a maximum. (After that, it is possible that the output ratio tends to increase as the width of the rectifying plate increases.) As shown in FIG. 8B, the rectifying plate angle θ is + 20 ° and the output ratio is the maximum. Has become. Further, as shown in FIG. 8C, the front / rear position d of the leading edge of the current plate is + 0.05D, and the output ratio is maximized. Further, as shown in FIG. 8D, it has been experimentally confirmed that the output ratio increases as the straight line leading edge lateral position W approaches the windmill.

  FIG. 9 shows the results obtained by performing wind tunnel experiments on a case where there is no rectifying plate and a case where a rectifying plate is provided, using a device in which a wind power generator is connected to the above-described vertical axis windmill, and actually measuring the output. . As a result, as shown in FIG. 9, the output was 1.5 to 1.6 times higher than that without the rectifier plate by using the rectifier plate.

  FIG. 10 shows an increase in output when a current blocking plate is used in addition to the current plate, as a result of a wind tunnel experiment. 10 corresponds to the parameters shown in connection with FIG. 6A, and the width L and the angle θ of the current plate correspond to those shown in FIG. are doing. Here, the output ratio is the ratio of the output without the rectifying plate and the flow blocking plate to the output with the rectifying plate and the flow blocking plate, and D represents the diameter of the wind turbine (the diameter of the rotating surface of the blade). Then, as shown in FIG. 10, in combination with a rectifying plate (width L = 1.0 D, angle θ = 20 degrees), the above-mentioned flow blocking angle φ of the flow blocking plate is φ = [0 degrees−45 degrees. Degree], that is, by covering an area from the windward direction to 45 degrees in the direction opposite to the rotation direction of the blade, the output ratio is maximized.

  As described above, according to the present invention, a rectifying plate that controls the flow of wind around the vertical axis windmill without using a plurality of large-scale wind guide plates or wind collecting plates as in the related art is required. By providing this, it is possible to increase the amount of air or the speed of the flow that flows into the portion of the vertical axis type wind turbine where the torque is generated, and when this is used as a wind power generator, it is possible to further improve the power generation efficiency. is there.

  Further, in addition to the above-mentioned current plate, the position control device of the current plate and the current blocking plate, or by using the position control device of the current plate and the current block, the wind power generator can be more effectively used. Etc. can function.

D The diameter of the rotating surface of the blade of the vertical axis wind turbine BL The blade of the vertical axis wind turbine VWT The vertical axis wind turbine C The rotating axis of the vertical axis wind turbine fl Streamline SR Rectifying plate H The vertical side (or its length) Sa)
H 'Vertical side (or its length)
H1 Leading edge of rectifier plate H2 Trailing edge of rectifier plate L Horizontal side of rectifier plate (or length) Rectifier plate width L 'Horizontal side of current cutoff plate (or length)
t Thickness of rectifier plate t 'Thickness of rectifier plate θ Angle of rectifier plate surface φ Angle width of rectifier plate (interrupt angle)
角度 Angle of the plate surface of the tail fin d Position of the front edge of the current plate in the front-rear direction (front-rear position of the front edge of the current plate)
W Horizontal position of the front edge of the current plate (horizontal position of the front edge of the current plate)
FP Front position of the current plate F frame F10 Front edge support frame F30 Trailing edge support frame F50 Tail support frame F70 Auxiliary frame F90 Shield plate support frame TA Tail AO Shield plate UB Upper bearing DB Lower bearing 400 Position adjustment of the rectifier plate Device 700 Position adjustment device for blockage plate

Claims (12)

A straightening plate of a vertical axis type wind turbine having a blade that rotates around a vertically provided rotation axis,
The current plate is configured in a rectangular flat plate shape,
One side of the vertical side which is the windward side of the rectifying plate, when viewed from the rotation axis, is substantially 90 degrees from the windward direction of the wind flowing into the vertical axis windmill to the rotation direction of the vertical axis windmill. At the front position in the leeward direction by d from a position slightly away from the outer edge of the rotating surface of the blade in the azimuth of degree, provided on the side surface of the blade in parallel with the direction of the rotation axis, and d is When the diameter of the rotating surface of the blade is D, it is in the range of 0 <d <0.1D,
The other side of the rectifying plate, which is the leeward side of the vertical side, extends from the front side position with respect to a line connecting the leeward direction and the leeward direction with the rotation axis outward, and the leeward side. Is provided in a direction within a range of approximately 15 degrees to 25 degrees in the leeward direction,
The length of the side on the vertical side of the current plate is substantially equal to the length of the blade along the rotation axis in the rotation axis direction.
The horizontal side of the current plate is formed in a direction perpendicular to the rotation axis,
The length L of the horizontal side of the rectifier plate is in the range of 0.5D <L <D. The rectifier plate of a vertical axis wind turbine, wherein:   A vertical axis wind turbine comprising the current plate according to claim 1.   A wind power generator using the vertical axis wind turbine according to claim 2. It is a position adjustment device of the current plate according to any one of claims 1 to 3,
The position adjusting device includes at least a tail fin, a plurality of frames, and the rectifying plate,
The plurality of frames, on the outer edge side of the blades of the vertical axis windmill, rotatably support the tail and the rectifying plate around the rotation axis of the vertical axis windmill,
The plurality of frames, at least a leading edge support frame that supports the leading edge of the current plate,
A trailing edge support frame that supports the trailing edge of the current plate, a tail support frame that supports the tail, and an auxiliary frame that is connected to the trailing edge support frame and the tail support frame,
The auxiliary frame connects the trailing edge support frame and the tail support frame, and the straightening plate is approximately 20 degrees from the leading edge to the rear edge of the straightening plate with respect to the axial direction of the tail support frame. Support to take an angle,
According to the wind conditions around the vertical axis wind turbine, the front edge of the rectifying plate is moved forward by the rotational moment around the rotational axis applied to the tail and the moment around the rotational axis applied to the rectifying plate. position adjusting device that will be placed in position. Vertical axis wind turbine comprising a position adjusting device according to claim 4.   A wind power generator using the vertical axis wind turbine according to claim 5. A flow shield plate used for a vertical axis wind turbine including the current plate according to any one of claims 1 to 6,
The flow shield plate, the horizontal side is formed in a circular arc concentric with the rotation surface of the blade, the overall rectangular shape,
The side on the vertical side of the flow shield plate is configured to have a length substantially equal to the length of the blade along the rotation axis in the rotation axis direction, and on the outer edge side of the blade in parallel with the rotation axis. Placed,
The horizontal side of the flow blocking plate is disposed along the outer edge of the rotating surface of the blade at a position slightly away from the outer edge of the rotating surface, and the length of the horizontal side of the flow blocking plate is When viewed from the rotation axis, the size is such that it covers from the windward direction of the wind flowing into the vertical axis windmill to an azimuth of about 45 degrees in a direction opposite to the rotation direction of the vertical axis windmill. Blocker .   A vertical axis wind turbine comprising the flow shield according to claim 7.   A wind power generator using the vertical axis wind turbine according to claim 8. It is a position adjusting device of the straightening plate according to any one of claims 1 to 6 and the flow shield plate according to any one of claims 7 to 9,
The position adjusting device includes at least a tail, a plurality of frames, the rectifying plate, and the flow blocking plate ,
The plurality of frames, on the outer edge side of the blades of the vertical axis wind turbine, rotatably support the tail, the rectifying plate and the flow blocking plate around the rotation axis of the vertical axis wind turbine,
The plurality of frames, at least a leading edge support frame that supports the leading edge of the current plate,
A trailing edge support frame that supports the trailing edge of the current plate, a tail support frame that supports the tail, an auxiliary frame that is connected to the trailing edge support frame and the tail support frame, and supports the flow blocking plate. It is composed of a flow shield plate support frame,
The auxiliary frame connects the trailing edge support frame and the tail support frame, and the straightening plate is approximately 20 degrees from the leading edge to the rear edge of the straightening plate with respect to the axial direction of the tail support frame. Support to take an angle,
According to the wind conditions around the vertical axis wind turbine, the rotational moment about the rotation axis applied to the tail, the moment about the rotation axis applied to the rectifying plate, and the moment about the rotation axis applied to the flow blocking plate By this, the front edge of the flow straightening plate is disposed at the front side position, the plate surface of the flow blocking plate, from the windward direction of the wind flowing into the vertical axis windmill, the rotation direction of the vertical axis windmill and position adjusting device that holds a position to cover the up on orientation of approximately 45 degrees in the opposite direction.   A vertical axis wind turbine comprising the position adjusting device according to claim 10.   A wind power generator using the vertical axis wind turbine according to claim 11.