Mobile-body-mount wind speed acceleration type wind turbine

Abstract

To provide a mobile-body-mount wind speed acceleration type wind turbine that increases a wind speed on a wind turbine back surface and a wind speed at an outlet portion of a wind tunnel body to improve rotation efficiency of the wind turbine, mends a problem relating to the height of a device, and improves stability of the device and stability of a support.SOLUTION: A mobile-body-mount wind speed acceleration type wind turbine comprises a wind tunnel body 22 and a wind turbine 21. The wind tunnel body 22 includes a front wind tunnel body 22-1 and a rear wind tunnel body 22-2. The wind turbine 21 accelerates wind speed by a high-speed airflow (A) blowing through spaces S on both sides and an airflow (B) blowing outside the rear wind tunnel body 22-2.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a mobile-mounted wind speed acceleration type windmill that is mounted on an automobile, a railway vehicle, a ship, or other mobile bodies, increases the wind speed at the back of the windmill and the outlet portion of the wind body, improves the rotational efficiency of the windmill blades to increase the power generation amount, and supplies or supplements the power source of the mobile body with improved installation height problems and installation and support stability.

Background Art

[0002] In recent years, with the call for preventing global warming, the development of new clean energy has become an urgent task. One of the clean energies attracting attention is a wind power generation system that does not emit CO2.

[0003] However, although wind power generation is currently under development, its status as an alternative energy to oil is low at present. This is because means for effectively capturing wind energy have not been developed.

[0004] Conventionally, the main means of supplementing wind energy has been wind power generation using a lift-type propeller windmill. In the case of this lift-type propeller windmill, there is a problem that the windmill itself becomes large because long blades (propeller blades) are required.

[0005] Also, its energy efficiency is around 40%, that is, currently around 40% of the wind energy is captured. Incidentally, the theoretical maximum efficiency is 59.3% (Betz's law).

[0006] Sometimes, when a person passes through the valley between buildings or an arcade street, they may encounter an unexpected strong wind. This is because the wind blocked by the building walls or the like concentrates at the passable points in the valley or arcade street in search of gaps.

[0007] This is considered a kind of de Laval tube effect. Therefore, a wind power generation device has been proposed in which a windmill is placed at the center of a de Laval tube formed by connecting de Laval tubes back to back, that is, near the minimum cross-sectional area (Patent Document 1).

[0008] The inventors provided a partition wall between a fan and a windmill, drilled holes in its wall surface, sent air through the holes with the fan, placed the windmill immediately behind the holes, and examined the rotational speed of the windmill. As a result, surprisingly, it was found that the rotational speed of the windmill dropped far more than when air was sent directly from the fan to the windmill without providing a partition wall.

[0009] That is, it was found that for the rotation of the windmill, not only the wind hitting the front surface of the windmill but also the amount of air passing from the periphery to the back of the windmill is important. A wind-collecting type windmill was proposed that increases the power generation amount of the windmill by pulling the wind behind the windmill with a large amount of wind force converged by the outer wind cylinder of the double-structured wind cylinder. (Patent Document 2).

[0010] The above-described wind-collecting type windmill functions based on the principle described below. If the velocity of the air passing through the windmill is V, the density is ρ, and the pressure is P, the total energy of the wind per unit volume is (1 / 2)ρV 2 +P = constant. Therefore, in wind collection, the pressure energy decreases and the kinetic energy increases. This is due to the rectification (opposite of randomization) of V and P, so it is a decrease in entropy (S). Therefore, the free energy increases by only -TΔS (T: temperature).

[0011] Therefore, the wind-collecting type has more energy. However, this is the case assuming a steady flow in a Bernoulli flow tube. If a windmill is placed here and energy is extracted, V behind the windmill decreases and P increases.

[0012] Therefore, in order to bring this closer to a steady flow, it is necessary to increase the speed of the low-speed flow by the friction of the high-speed flow outside the flow tube. In other words, the air molecules behind the windmill decelerated by the high-speed air molecules are knocked out backward. (Patent Document 3).

[0013] In order to knock out the air molecules behind the windmill, it is effective to provide gaps through which wind blows on both sides of the side surface of the windmill installed inside the intermediate wind cylinder or on both sides of the side surface and the upper and lower surface sides and flow wind with a high wind speed. (Patent Document 4).

[0014] Furthermore, currently, the carbon-neutral and hydrogen-based society is accelerating worldwide, and the use of renewable energy has become essential. For example, development is underway to install wind turbines, solar power generators, etc. on moving objects such as automobiles to supply or assist power, and to use rigid wing sails on ships for propulsion (Patent Documents 5, 6, 7).

[0015] In the case of wind power generation, since the output is proportional to the cube of the wind speed, a wind collection device as described above is used to accelerate the wind speed. That is, in the natural environment, the annual average wind speed is about 3 to 5 m / s, and since it cannot be fully utilized with respect to the capacity (rated output) of the wind power generator, the wind speed is accelerated by the wind collection device.

[0016] The speed of the moving object is 20 km / h (5.6 m / s), 40 km / h (11.1 m / s), 60 km / h (16.7 m / s), 80 km / h (22.2 m / s), 100 km / h (27.8 m / s), so it becomes a very high wind speed, which is very advantageous for wind power generation. Furthermore, if a wind collection device is attached, an even greater amount of power generation can be obtained.

[0017] Note that the wind collection device needs to be configured as compact as possible and care should be taken not to cause resistance during the running of the moving object.

Prior Art Documents

Patent Documents

[0018]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Patent Document 6

Patent Document 7

Summary of the Invention

Problems to be Solved by the Invention

[0019] The present invention is based on the basic concepts of Patent Documents 3 and 4 described above. The details will be described below.

[0020] When a person passes through the valley between buildings or an arcade, they often encounter unexpectedly strong winds. As described above, the wind blocked by the building walls or the like concentrates at the passable points in the valley or arcade seeking gaps.

[0021] If the density of the passing air is ρ and the wind speed is V, the energy of the wind per unit volume is (1 / 2)ρV 2 +P = constant. Therefore, if the wind is blocked by the wall and the speed becomes 0, the energy becomes only pressure, and a high-pressure air wall is generated on both sides of the wall at the entrance of the valley or the like. This becomes a wind trunk duct, and it is considered that the wind speed increases.

[0022] Therefore, as shown in FIGS. 21(a) and (b), a blower 11 (φ = 240 mm) and a windmill 12 (φ150 mm) were arranged at an interval of about 750 mm, and flange-shaped wall members 13a and 13b were provided on the outer side of the edge of the air inlet of the windmill 12, respectively. The rotational speed of the windmill 12 when air was blown from the blower 11 was observed.

[0023] The outer diameter of this wall member 13a is larger than the air flow of the blower 11, and the outer diameter of the wall member 13b is configured to be equal to or less than the air flow of the blower 11. Although not shown, the rotational speed was also observed in the case where no wall member was provided in the same manner.

[0024] As a result, when the wall member 13a was provided (Fig. 21(a)), the rotational speed of the windmill 12 dropped significantly compared to the case where the wall member was not provided. This is because since the wind source is a blower, basically only an air flow corresponding to the diameter of the blades of the blower 11 can be obtained. Therefore, when the outer diameter of the wall member is made larger than the wind speed of the blower 11, the air flow to the back of the windmill 12 is completely blocked.

[0025] Also, when the wall member 13b was provided (Fig. 21(b)), the rotational speed of the windmill increased compared to the case where the wall member 13a was provided. This is presumably because when a wall member 13b having an outer diameter equal to or less than the air flow of the blower 11 is provided, part of the air volume flows to the back of the windmill, so the air passing through the windmill 12 is pulled and its speed increases.

[0026] When the wind passes through the windmill, energy is taken away and the wind speed decreases. In terms of the kinetic theory of molecules, this means that the temperature decreases. The above experiment shows that the reduced energy of the air flow behind the windmill is compensated by mixing and friction with the air flow outside with a high wind speed, that is, a large dynamic pressure and kinetic energy, so that the speed of the air flow behind the windmill increases.

[0027] As a result, it can be seen that it is important to forcibly drive the air passing through the windmill to the rear of the windmill in order to increase the rotational speed of the windmill.

[0028] Based on the above circumstances, the present invention aims to solve the problems of the prior art. It is arranged on a moving body, increases the wind speeds at the back of the windmill and the outlet part of the wind body, improves the rotational efficiency of the windmill to increase the power generation amount, and provides a windmill for assisting the power supply of a moving body that improves the problems of the installation height and the stability of installation and support.

Means for Solving the Problems

[0029] The mobile body-mounted wind speed acceleration type windmill of the present invention that achieves the above object is a mobile body-mounted wind speed acceleration type windmill mounted on a mobile body, which consists of a wind body and a windmill. The wind body has a substantially rectangular cross-section, and its cross-sectional area is formed into a front wind body that is linearly or curvilinearly reduced or has the same cross-sectional area from the wind flow inlet, and a rear wind body with a substantially rectangular cross-section that is linearly or curvilinearly enlarged or maintains the same cross-sectional area from the position of the reduced cross-sectional area to the wind flow outlet. A wind guide plate is formed at the wind flow inlet. The windmill is installed in the reduced portion of the wind body with the minimum distance from the long side portion of the wind body, and the wind flow inlet is arranged to face the traveling wind (Claim 1).

[0030] The substantially rectangular cross-section includes an elliptical shape having a long side portion and a short side portion, and other polygonal shapes. In the present invention, by making the wind body have a substantially rectangular cross-section, compared with the case where the wind body is circular or square, the wind speed flowing along the side of the windmill is supplied to the space portions on both sides of the windmill without escaping above and below the windmill, effectively expelling the airflow with a reduced speed at the back of the windmill, and recovering the velocity energy of the airflow at the back of the windmill.

[0031] In the present invention, when the wind is received from the wind flow inlet, the wind passes through the front wind body and reaches the windmill installed in the reduced portion with a substantially rectangular cross-section, causing the windmill to rotate. At the same time, the high-speed airflow blows through the space portions on both sides of the windmill. Then, the airflow with a reduced speed at the back of the windmill, whose energy has been taken away by the windmill, is expelled by the high-speed airflow blowing through the space portions on both sides of the windmill, recovering the velocity energy of the airflow at the back of the windmill.

[0032] As a result, due to the front wind body whose cross-sectional area is linearly or curvilinearly reduced or formed to have the same area from the wind flow inlet to the position where the windmill is installed, the wind increases in speed and is guided to the windmill, increasing the amount and speed of the wind passing through the windmill and being supplied to the rear wind body.

[0033] The rear air duct is formed to linearly or curvilinearly expand from a position with a reduced cross-sectional area or maintain the same cross-sectional area, and has an open air flow outlet. The air supplied to the rear air duct is brought into contact with a faster and lower-pressure air flow that blows through the outside of the rear air duct, and the slower and higher-pressure air in the rear air duct supplied by mixing, friction, and absorption is drawn out from the air flow outlet, and again, the amount and speed of the air passing through the windmill are increased.

[0034] That is, the present invention increases the wind speed on the back of the windmill by accelerating the wind speed in two stages, improves the rotation efficiency of the windmill, and increases the power generation amount.

[0035] In addition, the configuration, operation, and effect of the present invention do not change whether the air duct is arranged horizontally or vertically. Therefore, when mounted on a moving body, the problems of the height of the device, and the stability of installation and support are improved.

[0036] One embodiment of the present invention is characterized in that at least two or more of the moving body-mounted wind speed acceleration type windmills are arranged (Claim 2).

[0037] When a large amount of power generation is required, a large number of the wind speed acceleration type windmills of the present invention are arranged. As a result, compared with the case where a large number are arranged closely, the running wind blows through the periphery of each wind speed acceleration type windmill, and the air collecting effect is improved.

[0038] At the same time, the surrounding running wind draws out the slower and higher-pressure air on the back of the windmill from the air flow outlet, and the amount and speed of the air passing through the windmill are increased, thereby increasing the power generation amount.

[0039] One embodiment of the present invention is a wind turbine with wind speed acceleration type mounted on a moving body, which consists of a wind body and a windmill. The wind body has a substantially rectangular cross-section, and its cross-sectional area forms a front wind body that is linearly or curvilinearly reduced or has the same cross-sectional area from the wind flow inlet, and a rear wind body with a substantially rectangular cross-section that is linearly or curvilinearly enlarged or maintains the same cross-sectional area from the position of the reduced cross-sectional area to the wind flow outlet. The windmill is installed in a reduced portion with a substantially rectangular cross-section by forming spaces on both sides, and the wind flow inlet is arranged facing the traveling direction (Claim 3).

[0040] According to the present invention, it has the same actions and effects as the invention described in Claim 1. When mounted on a moving body, problems related to the height of the device, installation, and support stability are improved.

[0041] One embodiment of the present invention is characterized in that at least two or more of the wind bodies are arranged (Claim 4).

[0042] According to the present invention, it has the same actions and effects as the invention described in Claim 3.

Effects of the Invention

[0043] According to the present invention, it is possible to provide a moving body-mounted wind turbine with wind speed acceleration type that increases the wind speed at the back of the windmill and the outlet portion of the wind body, improves the rotation efficiency of the windmill blades to increase the power generation amount, and improves the problems related to the height of the device, installation, and support stability, and supplies or assists the power source of the moving body.

Brief Description of the Drawings

[0044]

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Best Mode for Carrying Out the Invention

[0045] An embodiment of the present invention will be described below with reference to the drawings.

[0046] FIG. 1 is a schematic cross-sectional view of the moving body-mounted wind speed-accelerating type windmill F1 of the present invention, and FIG. 2 is a cross-sectional view taken along the line X-X of FIG. 1. In the figures, 21 is the windmill, 22d is the reduced portion, 22 is the wind body, and the wind body 22 is composed of a front wind body 22-1 and a rear wind body 22-2. and.

[0047] The front wind body 22-1 has a substantially rectangular cross-sectional shape, and a wind flow inlet 22a is formed on the side portion of the wind guide plate G. It is formed to be reduced linearly or curvilinearly or to have the same cross-sectional area from the wind flow inlet 22a. Note that the wind flow inlet 22a is widely opened so as to receive a large amount of traveling wind.

[0048] Further, the front wind body 22-1 may have a substantially rectangular cross-sectional shape, and a wind flow inlet 22a is formed on the side portion of the wind guide plate G, and it may be formed to have the same cross-sectional area from the wind flow inlet 22a.

[0049] The rear wind body 22-2 has a substantially rectangular cross-sectional shape, and is formed so as to expand linearly or curvilinearly from the position of the reduced cross-sectional area or to maintain the same cross-sectional area, and has an open wind flow outlet 22b. In the figure, S is a space portion formed on both sides of the windmill 21, and 10 is a generator.

[0050] Note that the substantially rectangular cross-sectional shape includes an ellipse having a long side portion and a short side portion, other polygons, etc. In FIG. 2, 23 is the long side portion and 24 is the short side portion.

[0051] And the windmill 21 is installed in the reduced portion 22d having a substantially rectangular cross-sectional shape with space portions S formed on both sides, with the distance between the windmill 21 and the long side portion 23 of the wind body 22 being minimized. d, with the distance between the windmill 21 and the long side portion 23 of the wind body 22 being minimized.

[0052] And the ratio of the short side portion 24 to the long side portion 23 of the wind body 21 is set to 1 to 10 times.

[0053] By means of such a two-stage structure in which the high-speed air flow passing through the space portions on both sides of the windmill and the air flow that has diffused in the rear wind trunk and become low-speed and high-pressure are accelerated by friction with the high-speed air flow outside the wind trunk, the air flow with a reduced speed on the back of the windmill from which energy has been taken by the windmill is ejected, and the speed energy of the air flow on the back of the windmill can be effectively recovered, thereby improving the rotational efficiency of the blades.

[0054] In the case of 1 to 10 times the ratio, when exceeding 10 times the ratio, the increase in the perimeter / area ratio with respect to the area does not become large. Further, when exceeding 10 times, there also arises a problem of causing an increase in the size of the apparatus.

[0055] In each of the above configurations, when the air flow inlet 22a receives the traveling wind (arrow W), the traveling wind W is guided by the wind guide plate G and supplied to the windmill 21 in the reduced portion 22d of the front wind trunk 22-1. At the same time, a high-speed air flow passes through the space portions S formed on both sides of the windmill 21.

[0056] Then, the high-speed air flow (arrow A) passing through the space portions S on both sides of the windmill 21 ejects the air flow with a reduced speed on the back of the windmill 21 from which energy has been taken by the windmill 21 to the rear wind trunk 22-2, aiming to recover the speed energy of the air flow on the back of the windmill 21 and improve the rotational efficiency of the windmill 21.

[0057] Next, the air flow supplied to the rear wind trunk 22-2 is brought into contact with a faster and lower-pressure air flow (arrow B) passing through the outside of the rear wind trunk 22-2, and by mixing, friction, and absorption, the air in the rear wind trunk with a lower speed and higher pressure is drawn out from the air flow outlet 22b, and again, the amount and speed of the air passing through the windmill 21 are increased. That is, the present invention increases the wind speed on the back of the windmill 21 by a two-stage wind speed acceleration, improves the rotational efficiency of the windmill 21, and increases the power generation amount.

[0058] FIG. 3 is a schematic plan view of the wind speed acceleration type windmill F1 having the above configuration mounted (arranged) horizontally on a moving vehicle C with the air flow inlet 22a facing the traveling wind, and FIG. 4 is a schematic front view thereof.

[0059] In the figure, the air flow inlet 22a is directly fixed above the driver's seat portion facing the traveling direction of the vehicle C. However, an appropriate mounting device may be provided and fixed as appropriate.

[0060] As a result, as the vehicle C travels, the traveling wind reaches from the air flow inlet 22a to the inside of the front air casing 22-1 of the air casing 22, and at the same time, a high-speed air flow (arrow A) that blows through the space portions S on both sides of the windmill 21 and a further air flow (arrow B) that blows through the outside of the rear air casing 22-2 are added, causing the windmill 21 to rotate and generating electricity by the generator 10.

[0061] FIG. 5 is a schematic side view in which the wind speed acceleration type windmill F1 having the above-described configuration is horizontally mounted on a railway vehicle T as a moving body and the air flow inlet 22a is mounted (arranged) facing the traveling direction of the railway vehicle T. When mounting, it is configured not to interfere with the overhead line. The wind speed acceleration type windmill F1 may be mounted on a cargo.

[0062] FIG. 6 is a schematic side view in which the wind speed acceleration type windmill F1 having the above-described configuration is horizontally mounted on a ship V as a moving body and the air flow inlet 22a is mounted (arranged) facing the sailing direction of the ship V, and FIG. 7 is a schematic side view in which the windmill of FIGS. 1 and 2 is used as a water turbine for hydroelectric power generation.

[0063] The wind speed acceleration type windmill for mounting on a moving body of the present invention can be directly used for hydropower and can function as a water speed acceleration type water turbine.

[0064] FIG. 8 is a schematic side view in which the wind speed acceleration type windmill F1 having the above-described configuration is vertically mounted on a ship V as a moving body and the air flow inlet 22a is mounted (arranged) facing the sailing direction of the ship V.

[0065] FIG. 9 is a side view in which the wind speed acceleration type windmill F1 having the above-described configuration is horizontally mounted on a vehicle C as a moving body in multiple stages, and the air flow inlets 22a are respectively mounted (arranged) facing the traveling wind.

[0066] FIG. 10 is a perspective view showing an embodiment of another moving body-mounted wind speed acceleration type windmill F2, and FIG. 11 is a cross-sectional view of the windmill installation position of FIG. 10. The same parts as those of the wind speed acceleration type windmill F1 are denoted by the same reference numerals.

[0067] In the figure, 21 is a windmill, 22d is a reduced portion, 22 is a wind body, 22-1 is a front wind body, 22-2 is a rear wind body, 22a is a wind flow inlet, 22b is a wind flow outlet, S is a space portion formed on both sides of the windmill 21, 26 is a long side portion of the outlet portion of the rear wind body 22-2, and 27 is a short side portion of the outlet portion of the rear wind body 22-2.

[0068] FIG. 12 is a schematic side view of the wind speed acceleration type windmill F2 configured as shown in FIGS. 10 and 11 mounted (arranged) above the driver's seat of the moving body automobile C with the wind flow inlet 22a facing the traveling direction of the automobile C, and FIG. 13 is a schematic front view thereof.

[0069] Further, FIG. 14 is a schematic side view of the wind speed acceleration type windmill F2 configured as described above mounted (arranged) on the moving body ship V with the wind flow inlet 22a facing the sailing direction.

[0070] Further, FIG. 15 is a schematic side view of the wind speed acceleration type windmill F2 configured as described above mounted on the bottom of a moving body (ship) as a waterwheel.

[0071] FIG. 16 is an explanatory view showing the vertical (a) and horizontal (b) states of a vertical axis windmill.

[0072] FIG. 17 is a front view (a) and a cross-sectional view (b) of a simple type wind collecting device, and the cross-sectional area of the wind body 22 has no change.

[0073] FIG. 18 is an embodiment in which the wind speed acceleration type windmill F2 configured as described above is supported by a support column 11. In this embodiment, a high-speed air flow blows through the space portion S below the windmill 21 to improve the rotation efficiency of the windmill and increase the power generation amount.

[0074] In addition, each of the illustrated embodiments is an example in which a single wind speed acceleration type windmill F1 or F2 is mounted (arranged) on a moving body. However, if necessary, the power generation amount can be increased by adjacently arranging two or more wind speed acceleration type windmills.

[0075] FIG. 19(a) is an example in which three wind speed acceleration type windmills F2 are arranged adjacent to each other side by side. When arranging the same three, as shown in FIG. 19(b), by forming a space S between them, the overall power generation amount can be increased. Note that at least two or more wind speed acceleration type windmills may be used.

[0076] FIG. 20(a) is an example in which three wind speed acceleration type windmills F2 are arranged adjacent to each other side by side and further formed in three stages. Also in this case, as shown in FIG. 20(b), by forming a space portion S between each adjacent wind speed acceleration type windmill F, the overall power generation amount can be increased. Note that at least two or more wind speed acceleration type windmills may be used.

[0077] These aspects of FIGS. 19 and 20 exhibit effects particularly in the cases of claims 3 and 4. Industrial Application Field

[0078] The present invention is mounted (arranged) on a moving body, increases the wind speed at the back of the windmill and the outlet portion of the wind body, improves the rotational efficiency of the windmill blades to increase the power generation amount, and can assist the power source of the moving body by improving the problems of the height of the device and the stability of installation and support, and has great applicability in the field of moving bodies.

Explanation of Reference Numerals

[0079] 21 Windmill 21d Reduced portion 22 Wind body 22-1 Front wind body 22-2 Rear wind body 22a Airflow inlet 22b Airflow outlet 23, 26 Long side portions 24, 27 Short side portions F1, F2 Moving body-mounted wind speed acceleration type windmills

Claims

1. A moving body-mounted wind speed acceleration type windmill to be mounted on a moving body, comprising a wind body and a windmill. The wind body consists of a front wind body having a substantially rectangular cross-section, the cross-sectional area of which is linearly or curvilinearly reduced or formed to have the same cross-sectional area from the air flow inlet, and a rear wind body having a substantially rectangular cross-section that is linearly or curvilinearly enlarged or maintains the same cross-sectional area from the position of the reduced cross-sectional area to the air flow outlet. A wind guide plate is formed at the air flow inlet. The windmill is installed in the reduced portion of the wind body with the minimum distance from the long side portion of the wind body, and the air flow inlet is arranged to face the traveling wind. A moving body-mounted wind speed acceleration type windmill characterized by the above.

2. A mounting method of the moving body-mounted wind speed acceleration type windmill according to Claim 1, characterized in that at least two or more of the wind bodies are arranged.

3. A moving body-mounted wind speed acceleration type windmill to be mounted on a moving body, comprising a wind body and a windmill. The wind body consists of a front wind body having a substantially rectangular cross-section, the cross-sectional area of which is linearly or curvilinearly reduced or formed to have the same cross-sectional area from the air flow inlet, and a rear wind body having a substantially rectangular cross-section that is linearly or curvilinearly enlarged or maintains the same cross-sectional area from the position of the reduced cross-sectional area to the air flow outlet. The windmill is installed in the reduced portion having a substantially rectangular cross-section by forming spaces on both sides, and the air flow inlet is arranged in the traveling direction. A moving body-mounted wind speed acceleration type windmill characterized by the above.

4. A mounting method of the moving body-mounted wind speed acceleration type windmill according to Claim 3, characterized in that at least two or more of the wind bodies are arranged.

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