Wind collecting type wind turbine

Abstract

To provide a wind collecting type wind turbine that can increase an internal flow rate.SOLUTION: A wind collecting type wind turbine 1 includes: a wind turbine body 2 constituted of a front wind tunnel body 3, an intermediate wind tunnel body 4 including a wind turbine installed in the center thereof and a rear wind tunnel body 5; and at least one pair of air guide blades 8 installed in right and left forward of an air inflow port 6.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a wind-collecting wind turbine equipped with a wind guide blade in front of an air inlet. [Background technology]

[0002] Conventionally, there have been proposals for wind-collecting wind turbines and wind power generators that are integrally constructed from a front wind tunnel body, a middle wind tunnel body in which a propeller-type wind turbine is installed at the center, and a rear wind tunnel body (for example, Patent Document 1 and Non-Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-1001 A [Non-patent literature]

[0004] [Non-Patent Document 1] M. Rivarolo,A. Freda,A. Traverso,Test campaign and application of a small-scale ducted wind turbine with analysis of yaw angle influence,Applied Energy,279 (2020) 115850,University of Genoa,Italy. Summary of the Invention [Problem to be solved by the invention]

[0005] However, the wind-collecting wind turbines in Patent Document 1 and Non-Patent Document 1 have a problem with the method of wind intake.

[0006] The present invention has been made in consideration of the above circumstances, and provides a wind-collecting wind turbine that can increase the internal flow velocity. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention provides a wind-collecting type wind turbine having a wind turbine body composed of a front wind tunnel body, a middle wind tunnel body in which the wind turbine is installed at the center inside, and a rear wind tunnel body, and having at least one pair of wind guide blades provided on the left and right in front of the wind inlet.

[0008] The wind collecting type wind turbine includes at least three pairs of the wind guide blades arranged in a vertical row from the rear to the front, and the rear ends of at least one pair of the wind guide blades can be located on the side of the front wind tunnel body.

[0009] The wind-collecting type wind turbine may be provided with a pair of side plates arranged vertically on the rear side surfaces of the wind outlet.

[0010] In the wind-collecting type wind turbine, a triangular prism-shaped protrusion that receives wind at one side may be provided on an upper portion of the middle wind tunnel body, and a vent hole having a major axis parallel to a longitudinal direction may be provided on an upper portion of the rear wind tunnel body.

[0011] In the wind-collecting type wind turbine, a rectangular wake body having both side plates and upper and lower plates can be provided behind the wind outlet.

[0012] In the wind-collecting type wind turbine, the side cross sections of the upper and lower plates of the wake body can be made triangular with a raised center.

[0013] In the wind-collecting type wind turbine, the side cross sections of the upper and lower plates of the wake body can be formed into a curved shape with a bulging center. Effect of the Invention

[0014] According to the wind-collecting wind turbine of the present invention, the internal flow velocity can be increased by providing a wind guide vane in front of the wind inlet. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a front perspective view of a wind concentrating type wind turbine according to a preferred embodiment. [Diagram 2] FIG. 2 is a top view of the wind-collecting wind turbine of the preferred embodiment. [Diagram 3] FIG. 2 is a front perspective view of another preferred embodiment of a wind concentrating type wind turbine. [Figure 4] FIG. 13 is a top view of another preferred embodiment of the wind-collecting wind turbine. [Diagram 5] FIG. 2 is a front perspective view of a wind-collecting wind turbine equipped with protrusions and ventilation holes. [Figure 6] FIG. 2 is a front perspective view of a wind-collecting wind turbine equipped with a wake body. [Figure 7] FIG. 13 is a front perspective view showing a modified example of a wake object. [Figure 8] FIG. 13 is a vector contour diagram showing the simulation results of a wind-collecting wind turbine equipped with side panels. [Figure 9] FIG. 13 is a vector contour diagram showing the simulation results of a wind-collecting wind turbine equipped with side panels. [Figure 10] FIG. 13 is a vector contour diagram showing the simulation results of a wind-collecting wind turbine equipped with side panels. [Figure 11] FIG. 13 is a vector contour diagram showing the simulation results of a wind-collecting wind turbine equipped with protrusions and ventilation holes. [Figure 12] FIG. 13 is a vector contour diagram showing the simulation results of a wind-collecting wind turbine equipped with protrusions and ventilation holes. [Figure 13] FIG. 13 is a vector contour diagram showing the simulation results of a wind-collecting wind turbine equipped with protrusions and ventilation holes. [Figure 14] FIG. 13 is a vector contour diagram showing the simulation results of a wind-concentrating wind turbine equipped with a wake object. [Figure 15] FIG. 13 is a vector contour diagram showing the simulation results of a wind-concentrating wind turbine equipped with a wake object. [Figure 16] FIG. 13 is a vector contour diagram showing the simulation results of a wind-concentrating wind turbine equipped with a wake object. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[0017] 1 to 6 are diagrams showing preferred embodiments of the wind-collecting wind turbine 1 of the present invention. The wind-collecting wind turbine 1 of this embodiment is equipped with a wind turbine main body 2, which is made up of a front wind tunnel body 3, an intermediate wind tunnel body 4 in which a wind turbine (not shown) is installed at the center inside, and a rear wind tunnel body 5. The front wind tunnel body 3, the intermediate wind tunnel body 4 and the rear wind tunnel body 5 may be integrally formed.

[0018] The front wind tunnel body 3, the middle wind tunnel body 4 and the rear wind tunnel body 5 have a surface into which the wind flows that is polygonal, such as a rectangle, or circular, such as an ellipse. The cross-sectional area of ​​the surface into which the wind flows in of the front wind tunnel body 3 gradually decreases from the wind inlet 6 to the middle wind tunnel body 4. The cross-sectional area of ​​the surface into which the wind flows in of the rear wind tunnel body 5 gradually increases from the middle wind tunnel body 4 to the wind outlet 7.

[0019] The wind turbine installed inside the wind turbine main body 2 can be, for example, a propeller-type wind turbine, but is not particularly limited as long as it has the function of rotating by catching the wind. Wind power is converted into electricity by a generator or the like attached to the rotating shaft of the wind turbine. The wind turbine is preferably installed near the middle wind tunnel body 4, but may be installed anywhere inside the wind turbine main body 2.

[0020] The front wind tunnel body 3, the middle wind tunnel body 4, and the rear wind tunnel body 5 can be integrally molded by any method, or can be made separately and joined together. The front wind tunnel body 3, the middle wind tunnel body 4, and the rear wind tunnel body 5 can be made of, but are not limited to, stainless steel, iron, aluminum, synthetic resin, etc.

[0021] The wind collecting wind turbine 1 is provided with at least one pair of wind guide blades 8 on the left and right in front of the wind inlet 6. The wind guide blades 8 are formed with a streamlined cross section from the front toward the wind inlet 6, and when installed, are curved from the outside to the inside in the left-right direction so that the approximate center is convex. The spacing between the pair of wind guide blades 8 is wide at the front and narrows toward the wind inlet 6, and the arrangement of the wind guide blades 8 in a top view forms a "H" shape with the front down and the rear up. The spacing between the rear ends of the pair of wind guide blades 8 should be roughly the same as the width of the wind inlet 6 of the front wind tunnel body 3.

[0022] When multiple pairs of wind guide blades 8 are provided, the wind guide blades 8 are arranged in a vertical row from the rear to the front. Each wind guide blade 8 should be arranged so as to overlap with the adjacent wind guide blade 8 when viewed from the side. The rear end of the wind guide blade 8 closest to the wind inlet 6 should be arranged so as to be located on the side of the front wind tunnel body 3. In Figs. 3 and 4, the wind collecting type wind turbine 1 has three pairs of wind guide blades 8 arranged in a vertical row from the rear to the front, and the rear end of the pair of wind guide blades 8 closest to the wind inlet 6 is located on the side of the front wind tunnel body 3. The number of wind guide blades 8 is not particularly limited.

[0023] Wind passes through the wind guide blades 8 and flows into the wind turbine body 2 from the wind inlet 6, causing the wind turbine to rotate. By providing the wind guide blades 8, the flow speed inside the wind turbine body 2 can be increased, and wind from the 90° side can also be allowed to flow into the wind turbine body 2.

[0024] The wind-collecting type wind turbine 1 may be provided with a pair of side panels 9 arranged vertically on the rear side surfaces of the wind outlet 7. The side panels 9 may also be made of the same material as the wind turbine body 2. The side panels 9 may be arranged so as to slightly cover the side surfaces of the rear wind tunnel body 5.

[0025] The wind-collecting wind turbine 1 may have a triangular prism-shaped protrusion 10 on the upper part of the middle wind tunnel body 4, and a vent hole 11 with a long axis parallel to the longitudinal direction on the upper part of the rear wind tunnel body 5 (Fig. 5). The protrusion 10 can be made of the same material as the wind turbine body 2. The protrusion 10 is arranged so that its longitudinal direction is perpendicular to the wind direction, and one side of the protrusion receives the wind. With this configuration, suction is generated, peeling of the wall surface is suppressed, and the maximum flow speed inside the wind turbine body 2 can be increased. The protrusion 10 can be of a shape other than a triangular prism as long as it can receive the wind. The position of the protrusion 10 may be slightly shifted toward the front wind tunnel body 3 or the rear wind tunnel body 5. The vent hole 11 is, for example, elliptical, and is preferably provided near the center of the upper part of the rear wind tunnel body 5.

[0026] The wind-collecting wind turbine 1 may be provided with a rectangular wake body 15 having both side panels 12 and upper and lower panels 13, 14 behind the wind outlet 7, instead of the side panels 9 (Fig. 6, Fig. 7(A)-(C)). It is preferable that the area of ​​the opening of the wake body 15 is slightly larger than the cross-sectional area of ​​the wind outlet 7. The wake body 15 can also be made of the same material as the wind turbine body 2. The wake body 15 may have a triangular shape with a rising center in the side cross section of the upper and lower panels 13, 14 (Fig. 7(B)). The wake body 15 may have a curved shape with a rising center in the side cross section of the upper and lower panels 13, 14 (Fig. 7(C)).

[0027] A simulation result of the wind-collecting wind turbine 1 of this embodiment will be described.

[0028] 8 to 10 are vector contour diagrams of the wind-collecting wind turbine 1 equipped with the wind guide blades 8 and side plates 9. FIG. 8 is a longitudinal section, FIG. 9 is a transverse section, and FIG. 10 is a front view of the intermediate wind turbine body 4. The figures show the cases where wind is introduced from the front, at an angle of 30°, and at an angle of 90°. The maximum flow velocity was 8.64 m / s in the case of front inflow, and 9.56 m / s in the case of 30° inflow. The average flow velocity was 7.68 m / s in the case of front inflow, 8.48 m / s in the case of 30° inflow, and 3.25 m / s in the case of 90° inflow. It was confirmed that wind can be introduced into the wind turbine body 2 even when the wind inlet 6 is at a right angle to the wind direction. This allows the wind turbine to rotate without rotating the wind turbine body 2 depending on the wind direction.

[0029] Figures 11 to 13 are vector contour diagrams of the wind-collecting wind turbine 1 equipped with protrusions 10 and ventilation holes 11. Figure 11 is a longitudinal section, Figure 12 is a transverse section, and Figure 13 is a front view of the intermediate wind tunnel body 4. The maximum flow velocity was 9.17 m / s, and the average flow velocity was 8.24 m / s.

[0030] Figures 14 to 16 are vector contour diagrams of the wind-collecting wind turbine 1 equipped with the wake body 15 of Figures 7(A) to (C). Figure 14 is a longitudinal section, Figure 15 is a transverse section, and Figure 16 is a front view of the intermediate wind tunnel body 4. The maximum flow velocity of (A) was 8.70 m / s, the maximum flow velocity of (B) was 9.42 m / s, the maximum flow velocity of (C) was 8.91 m / s, the average flow velocity of (A) was 7.74 m / s, the average flow velocity of (B) was 8.57 m / s, and the average flow velocity of (C) was 7.96 m / s.

[0031] As described above, it has been confirmed that the wind-collecting wind turbine 1 of this embodiment makes it possible to increase the flow velocity inside the wind turbine main body 2.

[0032] The wind-collecting wind turbine 1 of this embodiment can be modified in various ways. For example, the shape of the wind turbine body 2 is not particularly limited as long as it is applicable to a wind-collecting wind turbine. [Explanation of symbols]

[0033] 1 Wind collector type windmill 2. Windmill body 3 Forward wind fuselage 4 Mid-wind body 5 Rear wind fuselage 6 Wind inlet 7 Air outlet 8 Wind guide vanes 9 Side Panel 10 protrusions 11 Ventilation hole 12 Side Panel 13 Upper Board 14 Lower plate 15 Wake object

Claims

1. A wind-collecting type wind turbine having a wind turbine main body composed of a front wind tunnel body, a middle wind tunnel body in which a wind turbine is installed at the center inside, and a rear wind tunnel body, This wind-collecting type wind turbine has at least one pair of wind guide blades provided on the left and right sides in front of the wind inlet.

2. At least three pairs of the air guide vanes are provided in a vertical row from the rear to the front, The wind-collecting type wind turbine according to claim 1, wherein at least one pair of rear ends of the wind guide vanes are located on the sides of the front wind tunnel body.

3. The wind-collecting type wind turbine according to claim 1, further comprising a pair of side panels arranged vertically on rear sides of the wind outlet.

4. A triangular prism-shaped protrusion is provided on an upper portion of the intermediate wind tunnel body, the protrusion receiving wind on one side thereof. The wind-collecting type wind turbine according to claim 1, further comprising a vent hole having a major axis parallel to the longitudinal direction in an upper portion of the rear wind tunnel body.

5. The wind-collecting type wind turbine according to claim 1, further comprising a rectangular wake body having both side plates and upper and lower plates at the rear of the wind outlet.

6. The wind-collecting type wind turbine according to claim 5, wherein the side cross sections of the upper and lower plates of the wake body are triangular in shape with a raised center.

7. The wind-collecting type wind turbine according to claim 5, wherein the side cross sections of the upper and lower plates of the wake body are curved in shape with a central rise.

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