Vertical wind speed accelerating wind turbine

Abstract

To provide a vertical wind speed acceleration type windmill which increases a wind speed on a windmill back face by collecting winds in all directions, increases a wind speed in an outlet portion of a wind tunnel body and as a result, improves rotation efficiency of blades of the windmill, thereby improving generation power.SOLUTION: The present invention relates to a vertical wind speed acceleration type windmill consisting of a wind collector base, a wind tunnel body and a windmill. A wind inflow part is formed in an entire circumference of the wind collector base. The wind tunnel body consists of: a lower front wind tunnel member which is erected and installed on the wind collector base, of which the cross section is formed substantially rectangular and which is formed in such a manner that a cross-sectional area is reduced in a straight line or curved line manner from a wind inflow port formed at the side of the wind collector base; and an upper wind tunnel member which is formed so as to be expanded in a straight line or curved line manner from a position of the reduced cross-sectional area to a wind outflow port in an upper end. A windmill 21 is installed in a reduction part of the wind tunnel body in such a manner that an interval with a long side part of the wind tunnel body becomes minimum and a ratio of a short side part and the long side part of the wind tunnel body becomes 1 to 10 times.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a vertical wind speed acceleration type wind turbine that collects wind from all directions, increases the wind speed at the rear of the wind turbine and at the outlet of the wind tunnel body, thereby improving the rotation efficiency of the wind turbine blades and increasing the power generation. [Background technology]

[0002] In recent years, the prevention of global warming has become a pressing issue, and the development of new clean energy sources is an urgent need. One such clean energy source that has been attracting attention is the wind power generation system, which does not emit CO2. However, although wind power generation is currently under development, it is not currently considered a viable alternative to oil. It is necessary to develop a means of effectively capturing wind energy.

[0003] Up until now, the mainstream method of capturing wind energy has been wind power generation using lifting propeller wind turbines. The lifting propeller wind turbine requires long blades (propeller blades), which causes the problem of the wind turbine itself becoming larger. In addition, the current energy efficiency is around 40%, meaning that around 40% of the wind energy is captured. Incidentally, the theoretical maximum efficiency is 59.3% (Betz's law).

[0004] The development of wind turbines for wind power generation mentioned above has been based on the following aims: (1) to equip them with blades with as large a rotating diameter as possible, (2) to make the turbine as tall as possible, and (3) to install the turbine in a location as close to the wind as possible.

[0005] However, if the diameter of the rotor blades is increased to capture as much wind as possible, the support poles must be made taller, which creates problems such as the turbine becoming unstable in strong winds and having to be stopped for fear of damage if the wind is too strong. Furthermore, the construction costs are enormous, amounting to several hundred million yen.

[0006] Sometimes, when people pass through the gaps between buildings or through arcades, they encounter unexpected strong winds. This is because the wind that is blocked by the walls of buildings seeks an air gap and gathers at the passable points in the valley or arcade. This is considered to be a kind of Laval tube effect. For this reason, a wind power generation device has been proposed in which the wind turbine is placed in the center of a Laval tube made by connecting two trumpet tubes at the front and rear, that is, near the smallest cross-sectional area (Patent Document 1).

[0007] The inventors installed a partition between the electric fan and the wind turbine, drilled a hole in the wall, and used the electric fan to blow wind through the hole. They then placed the wind turbine immediately behind the hole and examined the rotation speed of the wind turbine. As a result, they were surprised to find that the rotation speed of the wind turbine was much lower than when the wind was blown directly from the electric fan to the wind turbine without installing a partition. In other words, it was found that not only the wind hitting the wind turbine at the front, but also the amount of wind passing from the periphery of the wind turbine to the rear is important for the rotation of the wind turbine, and a wind-collecting wind turbine has been proposed that increases the power generation efficiency of the wind turbine by sending a large amount of wind power concentrated by the outer wind tunnel of a double-structure wind tunnel to the rear of the wind turbine (Patent Document 2).

[0008] The wind-collecting wind turbine described above works on the following principle. If the speed of the air passing through the turbine is V, its density is ρ, and its pressure is P, then the total energy of the wind per unit volume is (1 / 2)ρV. 2 Since +P = constant, concentrating wind reduces pressure energy and increases kinetic energy. This is a decrease in entropy (S) because it rectifies V and P (the opposite of randomization). Therefore, free energy increases by -TΔS (T: temperature). Therefore, the concentrating wind type is more energy efficient. However, this is assuming a steady flow in a Bernoulli flow tube. If a windmill is placed on this and energy is extracted, V behind the windmill will decrease and P will increase. Therefore, in order to approach a steady flow, it is necessary to speed up the slow flow by using friction from the high-speed flow outside the flow tube. In other words, the air molecules behind the windmill, which have been slowed down by the high-speed air molecules, are knocked backwards (Patent Document 3).

[0009] Furthermore, in order to knock out the air molecules behind the wind turbine, it is effective to provide gaps on both sides and above and below the side of the wind turbine installed inside the intermediate wind tunnel body so that a high-speed wind can flow through (Patent Document 4). [Prior art documents] [Patent documents]

[0010] [Patent Document 1] JP 2008-520900 A [Patent Document 2] JP 2011-140887 A [Patent Document 3] Patent No. 6033870 [Patent Document 4] Patent No. 6110455 Summary of the Invention [Problem to be solved by the invention]

[0011] The present invention is based on the basic ideas of the above-mentioned Patent Documents 3 and 4. The details thereof will be described below.

[0012] When people pass through the gaps between buildings or through arcades, they often encounter unexpected strong winds. This is because the wind that is blocked by the walls of buildings seeks an air gap and gathers at passable points in the gaps or arcades. If the density of the passing air is ρ and the wind speed is V, the wind energy per unit volume is (1 / 2)ρV 2 Since +P = constant, when the air is blocked by a wall and the speed becomes 0, the only energy is pressure, and walls of high-pressure air are created on both sides of the entrance to the valley, etc. This becomes a wind tunnel duct, and it is thought that the wind speed increases.

[0013] 19(a) and (b), electric fan 11 (φ=240 mm) and windmill 12 (φ150 mm) were placed at a distance of about 750 mm, and brim-shaped wall members 13a and 13b were provided on the outside of the rim of the wind inlet of windmill 12, respectively, and the rotation speed of windmill 12 was observed when air was blown from electric fan 11. The outer diameter of wall member 13a was larger than the wind flux of electric fan 11, and the outer diameter of wall member 13b was configured to be equal to or smaller than the wind flux of electric fan 11. Although not shown, the rotation speed was also observed in the same manner when no wall members were provided.

[0014] As a result, when wall member 13a was provided (Fig. 19(a)), the rotation speed of wind turbine 12 dropped significantly compared to when no wall member was provided. This is because, since the wind source is an electric fan, basically only the wind flux equivalent to the diameter of the blades of electric fan 11 can be obtained, so if the outer diameter of the wall member is made larger than the wind speed of electric fan 11, the wind flow to the back of wind turbine 12 is completely blocked. Also, when wall member 13b was provided (Fig. 19(b)), the rotation speed of the wind turbine increased compared to when wall member 13a was provided. This is thought to be because when wall member 13b, which has an outer diameter equal to or smaller than the wind flux of electric fan 11, is provided, part of the wind volume flows to the back of the wind turbine, pulling the wind passing through wind turbine 12 and increasing its speed.

[0015] When wind passes a wind turbine, energy is lost and the wind speed decreases. In terms of molecular kinetic theory, this means that the temperature decreases. The above experiment shows that the decreasing energy of the wind flow behind the wind turbine is compensated for by mixing and friction with the air flow on the outside, which has a higher wind speed, i.e., greater dynamic pressure and kinetic energy, and the speed of the wind flow behind the wind turbine increases. As a result, it is clear that in order to increase the rotation speed of a wind turbine, it is important to force the wind passing through it out behind the turbine.

[0016] In consideration of the above circumstances, the present invention aims to solve the problems of the prior art and to provide a vertical wind speed acceleration type wind turbine that collects wind from all directions to increase the wind speed at the rear of the wind turbine and at the outlet of the wind tunnel, thereby improving the rotational efficiency of the wind turbine and increasing the power generation. [Means for solving the problem]

[0017] The vertical wind speed acceleration type wind turbine of the present invention, which achieves the above-mentioned object, comprises a wind collector base, a wind tunnel body, and a wind turbine. The wind collector base has a wind inlet formed around its entire circumference. The wind tunnel body is installed upright on the wind collector base, and comprises a lower wind tunnel member having a substantially rectangular cross section, the cross section of which is linearly or curvedly reduced or the same cross section as the wind inlet formed on the wind collector base side, and an upper wind tunnel member formed so as to linearly or curvedly expand or maintain the same cross section from the position of the reduced cross section to the wind outlet at the top end. The wind turbine is installed at the reduced part of the wind tunnel body with the distance between the long side of the wind tunnel body and the reduced part is minimized, and the ratio of the short side to the long side of the wind tunnel body is 1 to 10 times (claim 1).

[0018] According to the present invention, by providing a wind collector base, wind from all directions is collected, and the collected wind is supplied to the lower wind tunnel member, which has a substantially rectangular cross section and a cross-sectional area that is linearly or curvedly reduced from the wind inlet formed on the wind collector base side, and the upper wind tunnel member, which is linearly or curvedly expanded from the position of the reduced cross-sectional area to the wind outlet at the top end, thereby increasing the wind speed at the rear of the wind turbine and also increasing the wind speed at the outlet of the wind tunnel body. As a result, it is possible to provide a vertical wind speed acceleration type wind turbine that improves the rotation efficiency of the wind turbine and increases the power generation.

[0019] The generally rectangular cross section of the wind tunnel body includes an ellipse having long and short sides, other polygonal shapes, etc. By making the wind tunnel body generally rectangular in cross section, the present invention can effectively knock out the airflow whose speed has decreased at the rear of the wind turbine, without letting the wind flowing beside the wind turbine escape to the left and right of the wind turbine, and recover the velocity energy of the airflow at the rear of the wind turbine, compared to a case where the wind tunnel body is circular or square.

[0020] Specifically, the wind turbine is installed in the contracted part of the wind tunnel body with the distance between the long sides of the wind tunnel body minimized, and the ratio of the short side to the long side of the wind tunnel body is 1 to 10. Therefore, gaps are formed on both sides of the wind turbine, and the high-speed airflow passing through the gaps knocks out the slowed-down airflow behind the wind turbine, from which energy has been taken by the wind turbine, and effectively recovers the velocity energy of the airflow behind the wind turbine.

[0021] One embodiment of the present invention is characterized in that a vane is provided on the peripheral edge of the upper surface of the wind collector base to guide the collected wind to the center of the wind collector base (claim 2).

[0022] According to this embodiment, wind from all directions from the wind inlet portion is efficiently collected at the center of the wind collector base and is supplied without waste to the wind inlet formed in the lower wind tunnel member of the wind tunnel body.

[0023] One embodiment of the present invention is characterized in that a rotor is provided on the outer periphery of the wind collector base to cover approximately half of the wind inlet of the wind collector base, and a weathervane having a yaw function is provided in the approximate center of the rotor (claim 3). According to this embodiment, even if the wind direction changes, the weathervane exhibits the yaw function to rotate the rotor, and the open part of the rotor automatically faces the wind direction, allowing the wind to be collected effectively.

[0024] One embodiment of the present invention is characterized in that a wind dispersion part is formed on the rim of the wind outlet at the top end of the upper wind tunnel member (claim 4). According to this embodiment, the wind outside the wind tunnel body is dispersed, the contact area between the wind outside the wind tunnel body and the wind inside the wind tunnel body is increased, and the wind inside the wind tunnel body is forcibly expelled from the wind outlet of the upper wind tunnel member, thereby improving the amount and speed of the wind passing through the wind turbine.

[0025] The shape of the wind dispersion section is not limited, as long as the wind dispersion section can disperse the wind flowing outside the wind tunnel body, increase the contact area between the dispersed wind and the wind flowing out of the wind outlet of the upper wind tunnel member, promote mixing of the wind, and ultimately increase the speed of the outflowing wind.

[0026] In the present invention having the above configuration, wind from all directions collected by the wind collector base is collected by the wind inlet of the lower wind tunnel member, and the collected wind passes through the lower wind tunnel member to the wind turbine installed in the reduced section having a substantially rectangular cross section, causing the wind turbine to rotate. At the same time, high-speed air currents blow through the gaps formed on both sides of the wind turbine. The high-speed air currents blowing through the gaps on both sides of the wind turbine knock out the air current at the rear of the wind turbine, which has lost its energy due to the wind turbine, and recover the velocity energy of the air current at the rear of the wind turbine.

[0027] At the same time, the wind is accelerated and guided to the wind turbine by the lower wind tunnel member, whose cross-sectional area is formed so as to decrease linearly or curvedly from the wind inlet to the position where the wind turbine is installed, and the amount and speed of the wind passing through the wind turbine are increased and supplied to the upper wind tunnel member.

[0028] The upper wind tunnel member is formed so that the reduced cross-sectional area expands linearly or curvedly between the position where the wind turbine is installed and the wind outlet. The wind supplied to the upper wind tunnel member and passing through the wind turbine is brought into contact with a faster, lower pressure airflow blowing through the outside of the upper wind tunnel member, and the slower, higher pressure wind supplied inside the upper wind tunnel member is drawn out of the wind outlet by mixing, friction, and absorption, and the amount and speed of the wind passing through the wind turbine are increased again. This action is further promoted by forming a wind dispersion part on the rim of the wind outlet at the top end of the upper wind tunnel member. The present invention increases the wind speed at the back of the wind turbine by the two-stage wind speed acceleration, improving the rotation efficiency of the wind turbine and increasing the power generation efficiency. Effect of the Invention

[0029] According to the present invention, it is possible to provide a vertical wind speed acceleration type wind turbine that collects wind from all directions, increases the wind speed at the rear of the wind turbine, and also increases the wind speed at the outlet of the wind tunnel body, thereby improving the rotation efficiency of the wind turbine blades and increasing the power generation. Furthermore, by making the wind collector type wind turbine vertical, the wind flow inside the wind collector and the wind flow outside it cross at almost right angles at the outlet of the wind collector, which increases the knockout effect. This is because the contact area between the inside and outside wind flows is larger than in the horizontal type. [Brief description of the drawings]

[0030] [Figure 1] FIG. 1 is a schematic plan view of a vertical wind speed acceleration wind turbine according to the present invention. [Diagram 2] FIG. 2 is a front cross-sectional view of the vertical wind speed acceleration type wind turbine of FIG. 1. [Diagram 3] FIG. 2 is a side cross-sectional view of the vertical wind speed acceleration wind turbine of FIG. 1. [Figure 4] 4 is a different cross-sectional side view of FIG. 3. [Diagram 5] FIG. 1 is a plan view of a wind collector base with vanes on its upper surface. [Figure 6] This is a plan view of a wind collector base with a rotor and a weather vane on its outer periphery. [Figure 7] 7 is a cross-sectional view taken along line A-A in FIG. 6. [Figure 8] FIG. 11 is a front sectional view of a vertical wind speed acceleration type wind turbine showing another embodiment. [Figure 9] FIG. 11 is a plan view of a vertical wind speed acceleration type wind turbine showing another embodiment. [Figure 10] FIG. 10 is a front cross-sectional view of the vertical wind speed acceleration wind turbine of FIG. [Figure 11] FIG. 11 is a front sectional view of a vertical wind speed acceleration type wind turbine showing another embodiment. [Figure 12] FIG. 12 is a plan view of the guide of FIG. [Figure 13] 1A to 1C are front views showing examples of star-shaped dispersion sections (a), (b), and (c). [Figure 14] FIG. [Figure 15] 1A and 1B are a side view and a front view of a notched protrusion distribution portion. [Figure 16] A front view of the gear-shaped dispersion section. [Figure 17] FIG. 4 is a front view illustrating the size of the star-shaped dispersion portion. [Figure 18] 1A and 1B are front and side views of a rectangular dispersion portion. [Figure 19] FIG. 1 is an experimental diagram of wind turbine efficiency. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0031] An embodiment of the present invention will be described below with reference to the drawings.

[0032] FIG. 1 is a schematic plan view of a vertical wind speed acceleration wind turbine according to the present invention, FIG. 2 is a front sectional view of FIG. 1, and FIG. 3 is a side sectional view of FIG.

[0033] In the figure, 1 is the wind collector base, 2 is the wind tunnel body, 3 is the wind turbine, 4 is the wind inlet section formed around the entire circumference of the wind collector base 1, 5 is the lower wind tunnel member of the wind tunnel body 2, 6 is the upper wind tunnel member of the wind tunnel body 2, 7 is the contracting section of the wind tunnel body 2, 8 is the wind inlet of the wind tunnel body 2, and 9 is the wind outlet of the wind tunnel body 2. Also, H is a generator and S is a gap.

[0034] The wind collector base 1 is formed in a hollow disk shape, and further formed with a wind inlet section 4 on the entire circumference. The wind tunnel body 2 is installed upright on the wind collector base 1 and is composed of a lower wind tunnel member 5 having a generally rectangular cross section and a cross-sectional area that is linearly or curvedly reduced from a wind inlet 8 formed on the collector base 1 side, and an upper wind tunnel member 6 that linearly or curvedly expands from the position of the reduced cross-sectional area to a wind outlet 9 at the upper end, and each has a long side 10 and a short side 11.

[0035] The wind turbine 3 is installed in the contracting portion 7 of the wind tunnel body 2 with the distance between the long sides 10 of the wind tunnel body 2 minimized, and the ratio of the short sides 11 to the long sides 10 of the wind tunnel body 2 is 1 to 10. As a result, a gap S is formed on both sides of the wind turbine 3.

[0036] In addition, arrow 12 indicates the flow of wind from the wind collector base 1 to the lower wind tunnel member 5, arrow 13 indicates the flow of wind inside the wind tunnel body 2, and arrow 14 indicates the flow of wind outside and above the wind tunnel body 2.

[0037] Figure 4 is a different side cross-sectional view of Figure 3, and shows an example in which the wind tunnel body 2 is configured as a straight type. Note that even in this configuration, the front cross-sectional view (not shown) is configured in the same way as Figure 1, and the reduction section is configured.

[0038] 5 is a plan view of a vane 15 provided on the periphery of the upper surface of the wind collector base 1 to guide the collected wind to the center of the wind collector base 1. The vane 15 is curved toward the center of the wind collector base 1 to collect wind from all directions in the center of the wind collector base 1, and the collected wind is supplied to the wind inlet 8 of the lower wind tunnel member 5.

[0039] Fig. 6 is a plan view of a rotor 16 that covers approximately half of the collector base 1 on the outer periphery of the collector base 1, and a weather vane 17 is provided at approximately the center of the rotor 16, and Fig. 7 is a cross-sectional view taken along line A-A in Fig. 6. With this configuration, the weather vane 17, which has a yaw function according to the wind direction, moves downwind, and the opening of the rotor 16 faces the wind direction, so that the opening can effectively collect wind.

[0040] Furthermore, it is preferable to form an air dispersion part on the rim of the air outlet 9 of the upper air tunnel member 6. An example of the air dispersion part is shown in Fig. 13 to Fig. 18.

[0041] Examples of the dispersion portion include the star-shaped dispersion portion shown in Figures 13(a)(b)(c), the brim-shaped dispersion portion shown in Figure 14, the notched dispersion portion shown in Figure 15, the gear-shaped dispersion portion shown in Figure 16, and the rectangular dispersion portion shown in Figure 18, but other shapes are also possible and are not limited to these.

[0042] As shown in FIG. 17, it is preferable that the area of ​​a circle drawn by a peripheral circle D connecting the outermost parts of the star-shaped dispersion portion is at least twice the area of ​​a circle drawn by the outer diameter d of the air outlet 22b of the wind tunnel body 22.

[0043] 17, the circle drawn with an outer dotted line is an imaginary diameter connecting the vertices of the star-shaped dispersion part, and the circle drawn with an inner solid line is the outer diameter of the airflow outlet 9 of the wind tunnel body 2. In the circular band space sandwiched between the imaginary diameter D and the airflow outlet outer diameter d, it is preferable that the area of ​​the star-shaped dispersion part is less than half of the area of ​​the other parts.

[0044] In the case of the brim-shaped dispersion portion in FIG. 14, as shown in the figure, the height of the brim is preferably half the difference between the outer diameter D of the brim and the inner diameter d of the air outlet 22b, which is 1 / 10 to 1 / 5 of the inner diameter d.

[0045] In the case of the cutout dispersion portion in Figure 15, the cutouts do not have to be continuous and may be spaced apart, but from the perspective of pressure loss at the cutouts, it is preferable that the total area of ​​the cutouts exceeds half the area of ​​the surrounding area where the cutouts are located.

[0046] In the vertical wind speed acceleration type wind turbine configured as described above, wind from all directions collected by the wind collector base 1 reaches the wind inlet 8 of the lower wind tunnel member 5, and then passes through the lower wind tunnel member 5 to rotate the wind turbine 3 installed in the contracting section 7 of the wind tunnel body 2 (arrow 12). At the same time, high-speed air currents blow through the gaps S formed on both sides of the wind turbine 3. Then, the high-speed air currents blowing through the gaps S on both sides of the wind turbine 3 knock out the air current at the rear of the wind turbine, which has lost its energy by the wind turbine 3, and restore the velocity energy of the air current at the rear of the wind turbine 3 (arrow 13).

[0047] At the same time, the wind from the lower wind tunnel member 5, which is formed so that the cross-sectional area decreases linearly or curvedly between the wind inlet 8 and the position where the wind turbine 3 is installed, increases in speed and is guided to the wind turbine 3, and the wind passing through the wind turbine 3 is supplied to the upper wind tunnel member 6.

[0048] The upper wind tunnel member 6 is formed so that the reduced cross-sectional area expands linearly or curvedly between the position where the wind turbine 3 is installed and the wind outlet 9. The wind supplied to the upper wind tunnel member 6 and passed through the wind turbine 3 comes into contact with the faster, lower pressure airflow blowing through the outside of the upper wind tunnel member 6, and the slower, higher pressure wind supplied to the upper wind tunnel member 6 is dragged out of the wind outlet 9 by mixing, friction, and absorption, and the amount and speed of the wind passing through the wind turbine 3 are increased again (arrow 14). This action is further promoted by forming a wind dispersion part on the rim of the wind outlet 9 at the top end of the upper wind tunnel member 6. The present invention increases the wind speed at the back of the wind turbine 3 by the two-stage wind speed acceleration, improving the rotation efficiency of the wind turbine 3 and increasing the power generation efficiency.

[0049] Fig. 8 shows another embodiment, a front cross-sectional view of a vertical wind speed accelerating wind turbine in which the wind collector base 1 is multi-stage (two stages) and each stage is raised at the center. The same parts as in the above invention are given the same reference numerals. According to this embodiment, the wind collecting function of the wind collector base 1 can be further improved.

[0050] Figures 9 and 10 show yet another embodiment, in which the wind tunnel body 2 is formed into a cylindrical shape. Figure 9 is a schematic plan view of a vertical wind speed acceleration wind turbine, and Figure 10 is a front cross-sectional view of the same. In this embodiment, the side cross-sectional view is the same as the front cross-sectional view. The same parts as in the above invention are given the same reference numerals. In this embodiment, unlike the present invention, no gap S is provided.

[0051] Figures 11 and 12 show yet another embodiment, in which the wind tunnel structure is arranged in two stages. Figure 11 is a front cross-sectional view of a vertical wind speed acceleration wind turbine, and Figure 12 is a plan view of the guide.

[0052] 11 and 12, reference numeral 20 denotes a guide, and FIG. 12 is its plan view, with vanes 21 formed on the upper surface. Furthermore, the wind inlet is configured in two stages, with the lower wind inlet 22 serving as an intake for wind to rotate the wind turbine, and the upper wind inlet 23 being led above the wind turbine 3 and serving as an intake for wind to sweep stagnation. In the figures, reference numeral 24 denotes a support bar for the wind turbine 3 and the generator H, and 25 denotes a bearing.

[0053] In this embodiment, the wind turbine 3 is also installed in the contracting section 7 of the wind tunnel body 2. Then, in addition to the wind from the wind intake 22 for rotating the wind turbine, the lower speed, higher pressure wind that has passed through the wind turbine 3 is brought into contact with the faster, lower pressure airflow supplied from the wind intake 23 for sweeping stagnation, and is drawn out, thereby increasing the amount and speed of the wind passing through the wind turbine 3. Industrial application fields

[0054] The present invention is composed of a wind collector base, a wind tunnel body, and a wind turbine, and collects wind from all directions to increase the wind speed at the rear of the wind turbine and at the outlet of the wind tunnel body, thereby improving the rotation efficiency of the wind turbine blades and providing a vertical wind speed acceleration type wind turbine that increases the power generation, and has great applicability in the wind power generation field. [Explanation of symbols]

[0055] 1 Wind Collector Base 2 Wind Turret 3 windmill 4. Air inlet 5 Lower wind tunnel member 6. Upper wind tunnel member 7 Reduction section 8. Air inlet 9 Wind outlet 10 Long side 11 Short side 15 Vane 16 Rotating Body 17 Weathervane

Claims

1. A vertical wind speed acceleration type wind turbine comprising a wind collector base, a wind tunnel body, and a wind turbine, the wind collector base being formed with a wind inlet around its entire circumference, the wind tunnel body being installed upright on the wind collector base, the lower wind tunnel member being approximately rectangular in cross section and having a cross sectional area that is linearly or curvedly reduced from the wind inlet formed on the wind collector base side, and the upper wind tunnel member being formed to maintain a cross sectional area that linearly or curvedly expands from the position of the reduced cross sectional area to the wind outlet at the top end, the wind turbine being installed with the distance between the reduced part of the wind tunnel body and the long side part of the wind tunnel body being minimized, and the ratio of the short side part to the long side part of the wind tunnel body being 1 to 10 times, and a wind dispersion part being formed at the mouth edge of the wind outlet of the upper wind tunnel member.

2. A vertical wind speed acceleration type wind turbine comprising a wind collector base, a wind tunnel body, and a wind turbine, the wind collector base has a wind inlet formed around its entire circumference, the wind tunnel body is installed upright on the wind collector base, and is made up of a lower wind tunnel member having a generally rectangular cross section whose cross section is formed to be linearly or curvedly reduced from the wind inlet formed on the wind collector base side, and an upper wind tunnel member formed to maintain a cross section that expands linearly or curvedly from the position of the reduced cross section to the wind outlet at the top end, the wind turbine is installed with the distance between the reduced section of the wind tunnel body and the long side of the wind tunnel body being minimized, and the ratio of the short side to the long side of the wind tunnel body being 1 to 10 times, and a vane is provided on the periphery of the upper surface of the wind collector base to guide the collected wind to the center of the wind collector base.

3. A vertical wind speed acceleration type wind turbine comprising a wind collector base, a wind tunnel body, and a wind wheel, the wind collector base has a wind inlet formed around its entire circumference, the wind tunnel body is installed upright on the wind collector base, and is made up of a lower wind tunnel member having a generally rectangular cross section, the cross section of which is formed to be linearly or curvedly reduced from the wind inlet formed on the wind collector base side, and an upper wind tunnel member formed to maintain a cross section that expands linearly or curvedly from the position of the reduced cross section to the wind outlet at the top end, the wind wheel is installed at the reduced part of the wind tunnel body with a minimum distance between the long side of the wind tunnel body and the short side of the wind tunnel body, and the ratio of the long side to the short side of the wind tunnel body is set to 1 to 10 times, a rotor is provided on the outer periphery of the wind collector base to cover approximately half of the wind inlet of the wind collector base, and a weather vane having a yaw function is provided at the approximately center of the rotor.

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