Vertical axis type Rasen windmill

Abstract

In the world of small-scale wind power generation, we have yet to see the sight of mass-produced wind turbines in operation. As one way to create this world, a rotating tower came to mind, and we conceived of a vertical-axis spiral wind turbine with a strong frame that can withstand typhoons and gusts of wind, and blades attached to its spiral axis. [Solution] Inspired by the framework of a rotating tower, a lightweight and sturdy spiral wind turbine is constructed by attaching a cylindrical base 3 to the wind turbine's core 2, assembling a framework of multiple circular horizontal edges 5 and multiple spiral shafts 4 around the cylindrical base to form an elongated ellipsoid shape, attaching strip-shaped blades 10 to the spiral shafts, and using a thin plate-like structure with a wind vent hole 11 in the center of the blade, which can be easily attached to the spiral shaft using the hole in the blade, this vertical-axis spiral wind turbine, which can be manufactured by local industries, captures wind speed and converts it into rotational force, and delivers that energy to a power generation device that requires it via a belt 17 through a driving wheel 7, thus contributing to society.

Description

Technical Field

[0006] , , ,

[0007] , ,

[0001] The present invention relates to a vertical-axis raceway windmill.

Background Art

[0002] As a conventional technique, for example, the inventor of the invention disclosed in Patent Document 1 has proposed a proposal regarding power generation of a power generation device.

[0003] The inventor disclosed in Patent Document 2 has proposed a helical blade body and a power generation device.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0005]

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] In order to solve the above problems, the present invention is a vertical-axis raceway windmill that can utilize the wind blowing everywhere on the earth, such as the rooftops of buildings, the yards of farmers, farmlands and pasturelands, and coastlines. It is designed to assemble a raceway shaft and a circular horizontal edge skeleton inspired by a rotating tower that is strong against typhoons and gusts, and attach many narrow blades with holes drilled in the center of the blades from the beginning to the raceway shaft of the skeleton, so as to efficiently capture the kinetic energy of the wind.

[0007] As a trump card for wind power generation, offshore power generation is now being actively constructed. The United States has 2,500 units in operation, and Germany has 1,500 units in operation. However, in our country, due to the lack of shallow seas in terms of terrain and high construction costs, this has become a bottleneck, and the construction of offshore windmills is lagging behind other countries. In Ishikari Bay, Hokkaido, a large work vessel was being built and raised to the surface of the sea using four pillars to construct an offshore power generator. However, with prices rising for everything since last year, some companies have found it unprofitable and have reportedly canceled contracts. Construction technology has improved, but ultimately, it all depends on whether the public can afford the electricity charges.

[0008] If there were weight classes for small-scale wind power generation, like in wrestling, which class would this invention fall into? Offshore wind power generation and Dutch wind turbines (with blades made of a lattice frame with sails attached) are often seen in videos, but other types are rarely seen. The aforementioned (Patent Document 1) and (Patent Document 2) appear to be manufactured to suit their intended use, and the length of the blades is estimated to be less than 1 meter. I recently saw a TV program that featured a renewable energy exhibition, where vertical solar panels were displayed, creating a black boundary line across a vast expanse of snow in Hokkaido. This boundary line was made of solar panels attached to both sides, and the scene stretched for hundreds of meters. It was explained that even when it snows, the snow that accumulates on the reflectors is blown away by the wind, eliminating the need for snow removal, and that the panels on the back also generate electricity from the reflected light of the snow. On the next level, wind turbines from Tokyo were on display. The same model of turbine was housed in a raised, square enclosure on the side of the road, with large openings (wind intakes) on all four sides (east, west, north, and south). The double doors were half-open, and the wind hitting the inside of the doors rushed into the openings, making it appear as though the wind speed was faster than the natural wind. This is just speculation, but I think the blades of the vertical-axis wind turbine inside the building were rotating, and the Tokyo Metropolitan Government was collecting data, and that they were achieving considerable results.

[0009] Conventional small-scale wind turbines (with blades approximately 0.2-0.35m wide, 1-2m long, and 2-4 blades in number) efficiently capture the entire kinetic energy of the wind, but they are not commercially viable. This is likely due to either the small wind-receiving surface area of ​​the blades, the limited number of operating days, or both. Furthermore, the blades cannot withstand the immense energy of the wind, preventing mass production of wind turbines. The vertical-axis spiral wind turbine of the present invention compensates for the above-mentioned defects by using a large number of narrow blades, and furthermore, because wind escapes through pre-drilled ventilation holes, the accident rate of the blades is considered to be remarkably lower compared to existing wind turbines. Therefore, there are high expectations for power generation using this vertical-axis spiral wind turbine. [Means for solving the problem]

[0010] The present invention relates to a vertical-axis spiral wind turbine that can utilize wind blowing anywhere on Earth, such as on building rooftops, farm yards, farmlands and pastures, coastlines, and islands. The wind turbine comprises a rotatable cylindrical base on the axle of the wind turbine, an elongated ellipsoidal spiral axis centered on the cylindrical base, and perforated blades attached at equal intervals in the rotational direction along the spiral axis. The spiral axis is connected at points where it intersects with a plurality of circular horizontal edges arranged horizontally with the surface of the elongated ellipse facing from top to bottom. The perforated blades are used as vents and are attached to the elongated ellipse of the spiral axis facing from top to bottom, making it a vertical-axis spiral wind turbine that is resistant to typhoons and gusts of wind. [Effects of the Invention]

[0011] The rotational force generated by the vertical-axis spiral wind turbine of this invention is transmitted from the driving wheel 7 of the vertical-axis spiral wind turbine via a belt, and once the necessary generator is fully operational, people will no longer have to worry about the energy they need to live, and an era of unlimited electricity will arrive. With slight differences in lifestyle, there will be no one living without electricity anywhere in the world, bringing us one step closer to Kazuo Inamori's idea of ​​"what is right for human beings, and everyone becoming happy." Humanity, having experienced the horrors of war, will surely wish for true peace to come to the world. Small wind turbines using vertical-axis spiral wind turbines can be installed close to electricity consumption areas, and it is expected that the living standards of people all over the world will improve even further.

[0012] By utilizing vertical-axis spiral wind turbines and enabling power generation with power generation equipment, we hope to contribute to the decentralization of electricity and revitalize local communities. Those involved with vertical-axis spiral wind turbines are also residents of the region; that is, they are involved from the manufacturing stage of the vertical-axis spiral wind turbines. If power generation is possible using wind turbines made by local industries, those involved in the region will be consumers of that electricity. If this leads to a more stable life, residents will be more likely to settle in the region, liberation from social inequality, the preservation of local culture, the revival of local festivals, and the realization of a society where not only the elderly but also young people can take over, it will also lead to population growth. With the "hope" that it will be possible to generate electricity using the vertical-axis spiral wind turbine and power generation device of the present invention, we aim to complete a small-scale power generation wind turbine using a vertical-axis spiral wind turbine that utilizes the wind that blows all over the world. When installing a vertical-axis spiral wind turbine, since there are no restrictions on the sky, a 10-meter-high spiral wind turbine shaft can be erected, reinforced with 4 to 5 support columns, and two or three of these vertical-axis spiral wind turbines of the present invention can be stacked on top of each other. When I "imagine" the scene of them rotating, my dreams expand greatly, and it feels as if a peaceful world is just around the corner. [Brief explanation of the drawing]

[0013] [Figure 1] This is a perspective view of the vertical-axis spiral wind turbine according to the present invention. The present invention has eight spiral axes 4, and therefore eight strip-shaped blades. Since the blades overlap and become difficult to see, the blades are attached to only two spiral axes facing each other to make them easier to see. [Figure 2] This is a perspective view of the spiral axis and circular horizontal frame of a vertical-axis spiral wind turbine. [Figure 3] This is a plan view of the spiral windmill assembly and the spiral shaft insertion point. The wheels into which the upper and lower ends of the spiral shaft 4 are inserted overlap, with the upper one being 6 and the lower one 6z. The insertion points 18 are indicated as (1) to (4). [Figure 4] This is a perspective view of the central shaft 2 and cylindrical base 3 of a vertical-axis spiral wind turbine. [Figure 5]The enlarged views of the belt-shaped blades 10, the thin plate-shaped blades 10 and 10A, 10B, 10C with air vents in the middle of the blades, and the functional surface of the blades (using 12 and 13 for repairing the cut-in openings of the holes, and the circular hose 14 for preventing the wind escaping from the holes). [Figure 6] It is an enlarged perspective view of the equatorial part of the blade. [Figure 7] It is a cross-sectional view of the above perspective view. [Figure 8] The enlarged view and cross-sectional view of the spiral shaft and the circular horizontal edge with an air layer incorporated, and 4A, 5A are the enlarged views of the spiral shaft formed by bundling split bamboo and the circular horizontal edge. [Figure 9] Reference photo of Example 2 Blades "a" and blade b" and installation plan view (image of the relationship between the spiral shaft and the circular horizontal edge seen simultaneously from above and below the equator)

Modes for Carrying Out the Invention

[0014] The vertical-axis spiral windmill 1 of the present invention utilizes the kinetic energy of the wind blowing everywhere on the earth, and is a vertical-axis spiral windmill 1 that is light and durable enough not to succumb to typhoons, gusts, or heavy rains. The framework is made by combining the spiral shaft 4 and the circular horizontal edge 5 so as not to be affected by the wind. The belt-shaped blades 10 are attached to the spiral shaft 4 to efficiently capture the kinetic energy of the wind and convert it into rotational force. From the driving wheel 7 via the belt 17, the rotational force can be sent to other power generation devices. Hereinafter, examples will be described based on the drawings.

Examples

[0015] FIG. 1 is a perspective view showing the entire vertical-axis spiral windmill of the present invention. FIG. 2 is a perspective view showing the framework of the spiral windmill (assembly of the spiral shaft 4 and the circular horizontal edge 5). FIG. 3 is a plan view showing the mounting position of the spiral shaft 4. FIG. 4 shows the core rod 2 of the vertical-axis spiral windmill and the cylindrical base 3 that rotates around the core rod. Insert the end of the helical shaft 4 formed between the upper foil 6 and the lower foil 6z on this cylindrical base 3 into the upper foil, assemble it along the outer contour of the circular horizontal edge 5 arranged in an oval shape, and use a tie wrap at the intersection of the helical shaft 4 and the circular horizontal edge 5 to loosely tie it, completing the framework of the vertical-axis helical windmill in the shape of an oval vertical axis.

[0016] Next, the consumable strip-shaped blades 10 are made of a thin plate-shaped blade with holes drilled from the beginning at the intersection of the helical shaft 4 and the circular horizontal edge 5, with polypropylene as the main raw material. Using the cut-out 12 opened from the hole to the outside of the blade, it can be simply attached. Figure 3 is a plan view of the upper foil 6 and the lower foil 6z showing the insertion position of the helical shaft 4 for attaching the blades. The insertion position of the helical shaft 4 varies depending on the diameter of the windmill, which is a vertical-axis helical windmill integrating the framework and the blades.

[0017] The blades attached to each helical shaft 4 can capture the kinetic energy of the wind and efficiently rotate the cylindrical base 3. This rotational force can rotate the driving wheel 7 attached to the same cylindrical base 3 and be sent out via the belt 17, and it can generate electricity when connected to other power generation devices, which is a vertical-axis helical windmill.

[0018] Using the helical shaft 4 and the circular horizontal edge 5, insert the strip-shaped blade 10 from the inside to the outside of the helical windmill using the cut-out 12 of the blade hole. If the helical shaft 4 and the circular horizontal edge 5 are inserted into the hole, the installation is complete. To prevent the cut-out 12 that was open from the hole to the edge of the blade, insert a business card-sized ultra-thin aluminum plate 13 (to align the thickness of the blade) into the cut on the edge of the blade, align the thickness of the blade, and complete the bonding with tape.

[0019] For the helical windmill, since the helical shaft 4 is in a helical shape, the pitch of the blades is effective from the beginning. When you want to increase the rotation speed by blocking the wind escaping from the holes, attach two circular hoses 14 that expand with air to the back sides of the holes on both sides of the helical shaft. When the wind is weak, inflate the air, and when it gets strong, deflate the air. "Inflating and deflating the air is managed by the user.", which is a vertical-axis helical windmill.

[0020] Depending on the installation location of the vertical-axis spiral wind turbine of the present invention, it can be used by installing it horizontally, for example, when installed on a mountain ridge.

[0021] To achieve the above objectives, this invention is inspired by the rotating tower (the "globe jungle" seen in parks, etc.) and aims to create a lightweight and durable wind turbine by incorporating layers of air into the spiral axis and circular lateral edges, thereby reducing the overall weight of the system and simplifying installation work. It uses cellulose nanofiber as the main raw material, in addition to aluminum and hard plastic, and is assembled in a unit-type system. The material is not limited; any inexpensive material suitable for the intended use, such as split bamboo, is acceptable.

[0022] When creating spiral shafts and circular horizontal edges using the above-mentioned main raw materials, several types of circular pipes or hoses with different thicknesses, strengths, and curves are made, and about 7 to 10 of these are bundled together to form a curved spiral shaft. On the other hand, for circular horizontal edges, 5 to 6 to 7 or 8 pieces of several types of circular pipes or hoses with distinctive bends and curves are bundled together around a base ring to form the circular horizontal edge. Thinly split bamboo is waterproofed and used as a core to create circular horizontal edges and spiral shafts. The wind turbine features a distinctive vertical-axis spiral design with thin, winding, plate-like blades with ventilation holes and a slightly inwardly curved cross-section.

[0023] The blades 10 of the vertical-axis spiral wind turbine of the present invention have a width of 0.35 to 0.4 m, and their length varies depending on the height of the cylindrical base. However, if the diameter of the wind turbine is about 2 m, the cylindrical base is 4 m, the ventilation holes have a diameter of 0.01 m or less, and the number of holes is the same as the number of intersections between the circular horizontal edge and the spiral axis. The main body of this wind turbine appears to be able to withstand wind speeds up to 25 m / s. However, the ones I've seen on TV and in books are damaged because the wind turbine equipment can't keep up with sudden changes in wind speed. To overcome this, this invention is a vertical-axis spiral wind turbine that uses a frame inspired by a rotating tower and has blades attached to it.

[0024] When attaching the blades to the eight spiral shafts, insert the eight spiral shafts, each molded into a wheel 6 on top of a cylindrical base and a wheel 6z below it, and proceed with the work according to the plan view in Figure 3. Insert the upper end of the first spiral shaft into the insertion slot (1), and the lower end of that spiral shaft into the insertion slot (4) of the lower wheel 6z. Continue inserting (2) into (5), (3) into (6), (4) into (7), (5) into (8), (6) into (1), (7) into (2), and (8) into (3). The spiral shape is created by the 135-degree difference in the insertion angles.

[0025] A vertical-axis spiral wind turbine is constructed using a spiral axis and a circular horizontal edge. The spiral axis is assembled in a unit-like manner along the outer circumference of the circular horizontal edge to form an elongated elliptical frame, and strip-shaped blades 10 are attached to the spiral axis 4 of this frame. [Examples]

[0026] If there were any conventional products available, I would like to compare them with the vertical-axis spiral wind turbine of this invention, but I could not find any similar products. In the vertical-axis spiral wind turbine used in Example 2, a cylindrical base 3 is fitted onto the core 2 of the spiral wind turbine, and an upper wheel 6 and a lower wheel 6z are attached to the cylindrical base 3. Multiple spiral shafts 4 are inserted between the wheels, using plastic splints for the insertion openings and bamboo splints for the circular horizontal edges 5. These are inserted diagonally into the insertion openings shown in Figure 3 (plan view), and the circular horizontal edges of different diameters are suspended and assembled horizontally. The spiral shafts extend along the surface of the circular horizontal edges to the lower insertion openings, creating an elongated elliptical framework. A paper blade with a hole in the center was attached to the spiral shaft, and the paper blade was inserted using the cutout 12 to create two types of blades of different sizes, "a" and "b". Both had 8 blades, and the rotation speed was compared. The wind conditions used for comparison were those of a fan, high, medium, and low. For reference, feathers "a" and "b" in the photograph are shown in Figure 9. Plan view, using the insertion opening 12 of the spiral shaft 4, 8 blades ((1)~(8)) Image of the mounting position (wing "a", wing "b"). Test results

[0027] [Table 1]

[0028] The blade with the highest rotational speed was "a," and since it was also able to pick up even weak winds, we decided to adopt it. Blade "a" is inserted into the (1) opening of the wheel 6 (in the plan view), extends downwards towards the circular horizontal edge in an arc shape, reaches the equator (diameter 0.2m), then continues downwards towards the (4) opening, and the lower end of the spiral shaft fits into the wheel 6z. This process is repeated for the number of spiral shafts to complete the spiral shaft of an 8-bladed vertical-axis spiral wind turbine. Blade "a" is small, with a diameter of 0.2m, a width of 0.03m, and a length of 0.29m. Its wind-catching area (my own estimate, 1 / 3 of the entire blade = 2.66%) is also small. However, because the circumference is small, the spacing between the blades is also small, so the blades of the spiral wind turbine appeared to catch the wind one after another and rotate rhythmically. Perhaps the spiral angle of the spiral axis was just right, as it excels at catching and releasing wind, and that's reflected in the rotation speed. Incidentally, with the air vent hole of blade "a" blocked, the rotation speed was 131 R (RPM) at high speed. Blade "b" was inserted into (5) of wheel 6 (plan view) and fitted into (1) of the lower wheel 6z. The diameter of the vertical-axis spiral wind turbine was 0.3m, the length of the spiral shaft was 0.43m, and the circumference was also large. The inclination angle of the spiral shaft was also weak, and it was not able to catch the wind well. The diameter of the blades was also too wide, and there was too much space between the blades, so it seemed that it was not able to catch the wind properly. Overall, the imbalance between the spiral shaft and blades of the spiral wind turbine was poor, and the rotation speed did not increase. [Explanation of Symbols]

[0029] 1 Vertical axis helical windmill 2. Axle of a vertical-axis spiral wind turbine 3 Cylindrical base 4 spiral axis 4A Spiral shaft made of bamboo 5. Circular horizontal border 5A Circular horizontal edging made of bamboo 6. Top foil 6z lower wheel 7 Driving wheels 8 Roll Bearings 9 Cable ties 10. Strip-shaped feathers 10A, 10B, and 10C are enlarged diagrams of the blade's function. 11 Wing holes 12. Cutting 13. Aluminum plate (for repairing cut edges) 14 circular hoses 15 Electronic valves 16. Compressor (equivalent to one used for inflating tires on small cars) 17 belts 18 spiral shaft insertion slots

Claims

1. It is a vertical-axis spiral wind turbine, A rotatable cylindrical base is attached to the axle of the windmill. A skeleton is formed around the cylindrical base by assembling multiple circular horizontal edges and multiple spiral axes to form an elongated ellipsoid shape. The aforementioned circular horizontal edge is formed in a circular shape such that the diameter is largest at the equatorial region and decreases towards the top and bottom, and is arranged horizontally at intervals above and below the cylindrical base. The aforementioned spiral axis is formed in a spiral shape that is inclined at the same angle from the upper end to the lower end of the cylindrical base along the circular horizontal edge, and is arranged at equal intervals along the elongated ellipse shape. A vertical-axis spiral wind turbine, wherein strip-shaped blades with a length along the spiral axis are attached to the multiple spiral axes.

2. The blades are provided with holes drilled at the points where the circular horizontal edges intersect, and the blades are conveniently attached to the spiral axis using these holes, as described in claim 1.

3. A vertical-axis spiral wind turbine according to claim 1, wherein in order to lighten the entire system of the vertical-axis spiral wind turbine, layers of air are incorporated into the spiral axis and circular rim, the spiral axis is made by bundling several types of circular pipes, hoses, or split bamboo of different materials, and the circular rim is made by wrapping bundles of rolled-up circular pipes, hoses, or split bamboo around a circular ring that serves as the base.

Images