WO2024095505A1

WO2024095505A1 - Wind power generation device

Info

Publication number: WO2024095505A1
Application number: PCT/JP2023/005131
Authority: WO
Inventors: 道夫平井
Original assignee: 道夫平井
Priority date: 2022-11-04
Filing date: 2023-02-15
Publication date: 2024-05-10

Abstract

The present invention provides a lift-type wind power generation device having excellent power generation efficiency compared to conventional drag-type wind power generation devices. A wind power generation device according to the present invention comprises: a power transmission shaft that is rotatably installed; a rotary plate that is coupled to the power transmission shaft; at least one wind-receiving body that is provided to the rotary plate; and a generator that is coupled to the power transmission shaft. The wind-receiving body is provided with, for example, a first surface and a second surface different from the first surface, and can utilize a shape in which lift is generated on the second surface side when the first surface receives wind.

Description

Wind power generation equipment

The present invention relates to a wind power generation device.

Recently, the effects of climate change caused by global warming have been felt all over the world. Under these circumstances, there is a need to promote the introduction of renewable energy in order to achieve zero emissions of greenhouse gases, which are a cause of global warming.

Conventionally, a vertical-axis (vertical) wind power generation device (Patent Document 1) has been known, which has eight radial blades (wind receivers) attached to a rotating shaft extending vertically.

JP 2005-337245 A

The wind power generation device is a so-called drag type wind power generation device, and there is room for improvement in terms of power generation efficiency.

The present invention was made in consideration of these circumstances, and its goal is to provide a lift-type wind turbine that has superior power generation efficiency compared to conventional drag-type wind turbines.

The wind power generation device of the present invention comprises a rotatably installed power transmission shaft, a rotating disk connected to the power transmission shaft, one or more wind receiving bodies provided on the rotating disk, and a generator connected to the power transmission shaft, and the wind receiving body has a first surface and a second surface different from the first surface, and is shaped so that when the first surface receives wind, lift is generated on the second surface side.

According to the present invention, the rotational speed of the rotating disk connected to the power transmission shaft can be increased by using lift, resulting in superior power generation efficiency compared to conventional drag-type wind power generation devices.

1 is a schematic diagram showing an example of a wind turbine generator according to the present invention; FIG. 4A is an explanatory diagram showing an example of a wind-receiving body, and FIG. 4B is an explanatory diagram showing the forces acting on the wind-receiving body. FIG. 4A is an explanatory diagram showing an example of an outer structure, and FIG. 4B is an explanatory diagram showing another example of the outer structure. 1A is a front view showing an example of a wind turbine generator of the present invention, FIG. 1B is a partially enlarged view of FIG. 1A, and FIG. 1C is an explanatory diagram of the wind intake means shown in FIG. 10A shows another example of the wind intake means, and FIG. 10B is an explanatory diagram of the wind intake means of FIG. 10A in use. FIG. 2A is a schematic diagram showing an example of an adhesion prevention means, and FIG. 2B is a plan view of the adhesion prevention means in FIG. FIG. 4 is a schematic diagram showing another example of a wind turbine generator according to the present invention. 8A is a top perspective view of a wind receiving means of the wind power generating device of FIG. 7, and FIG. 8B is a bottom perspective view of the wind receiving means of the wind power generating device of FIG. 7. FIG. 1A is an explanatory diagram of a generator provided at the upper end of the power transmission shaft; FIG. 1B is an explanatory diagram of two generators provided at intervals in the vertical direction of the power transmission shaft; and FIG. 1C is an explanatory diagram of four generators provided at intervals in the vertical direction of the power transmission shaft. FIG. 4 is an explanatory diagram showing another example of a power transmission shaft. 1A is a schematic diagram showing an example of a semi-bowl-shaped wind receiving body provided on both the top and bottom surfaces of a rotating disk, FIG. 1B is a partially cutaway explanatory diagram of part X in FIG. 1A, and FIG. 1C is a cross-sectional view of FIG. FIG. 4 is a schematic diagram showing another example of a wind turbine generator according to the present invention.

(Embodiment)
An example of an embodiment of a wind turbine generator of the present invention will be described with reference to the drawings. The wind turbine generator shown in Fig. 1 is a vertical axis type (vertical type) wind turbine generator, and includes a generator 10, a power transmission shaft 20, a wind receiving means 30, and an outer structure 40 as its main components.

The generator 10 is a device (generator) that converts rotational motion into electricity. The generator 10 can be a new or existing one.

A power transmission shaft 20 is connected to the generator 10. The power transmission shaft 20 is a member that transmits the rotational force generated by the wind receiving means 30, which will be described later, to the generator 10. In this embodiment, the power transmission shaft 20 is a vertically elongated column that is perpendicular to the generator 10, and its lower end is connected to the generator 10. The upper end of the power transmission shaft 20 is rotatably supported by a bearing 21.

The wind receiving means 30 is a member that receives wind and rotates the power transmission shaft 20. In this embodiment, multiple wind receiving means 30 are provided in multiple stages (three stages in the example of Figure 1) spaced apart in the vertical direction of the power transmission shaft 20.

Each wind receiving means 30 comprises a rotating disk 31 connected to the power transmission shaft 20 and a wind receiving body 32 installed on the upper surface of the rotating disk 31. The rotating disk 31 can be made of any shape of plate material, including circular or rectangular plates, as well as elliptical plates. In addition, a plate material with a curved portion or a plate material with a cutout can also be used as the rotating disk 31. The rotating disk 31 does not have to be made of a plate material.

As shown in FIG. 2(a), the wind receiver 32 in this embodiment is a wing-shaped member with a cross-sectional shape that gradually becomes sharper from one rounded end to the other end, and has a gently curved bottom surface 32a and an upper surface 32b with a curve that curves upward more than the bottom surface 32a. The left and right end surfaces of the wind receiver 32 are flat. The wing-shaped wind receiver (hereinafter sometimes referred to as the "wing-shaped wind receiver" for ease of explanation) 32 can be made of aluminum, FRP (fiber reinforced plastic), etc.

When this type of wing-shaped wind receiver 32 receives wind from the right side as shown in Figure 2 (b), the wind hitting the bottom surface 32a generates lift L and drag D. As a result, a force R acts on the wing-shaped wind receiver 32 in a direction generated by the combination of lift L and drag D, and this force R accelerates the rotation of the rotating disk 31.

In the example shown in FIG. 1, five wind receiving bodies 32 are provided at intervals in the rotation direction of the turntable 31. The number of wind receiving bodies 32 installed on one turntable 31 may be more or less than five. Each wind receiving body 32 is supported by an L-shaped bracket 33 fixed to the turntable 31. The bracket 33 may have a different shape.

The wind receiving body 32 can be supported so that it sways when it receives wind, or it can be fixed and supported so that it does not sway (so that its position relative to the bracket 33 does not change).

In the example shown in FIG. 1, the wind receiving means 30 are arranged in three stages spaced apart in the vertical direction. The wind receiving means 30 may be arranged in more or less than three stages.

In this embodiment, the wind receiving means 30 for each stage has the same structure, but it is also possible to use wind receiving means 30 for each stage that have different structures. Different structures include, for example, cases where the shape or size of the rotating disk 31 is different, as well as cases where the number, size, shape, arrangement, etc. of the wind receiving bodies 32 are different.

The outer structure 40 is a member that covers the outside of the generator 10, the power transmission shaft 20, and the wind receiving means 30. The outer structure 40 is a member that prevents animals such as birds and other flying objects from colliding with the wind receiving means 30, etc., and when the wind intake means 50 described below is provided, it also functions as a member that supports the wind intake means 50.

As shown in FIG. 1, the outer structure 40 of this embodiment is a generally triangular pyramid-shaped structure tapered toward the upper end. The outer structure 40 can also be in a pyramid shape other than a triangular pyramid, such as a cone or a pyramid shape. The outer structure 40 can also be in a truncated pyramid shape, in which the top side of a triangular pyramid or cone-shaped pyramid is cut by a plane parallel to the base.

In this application, the term "pyramidal" is a concept that includes triangular pyramids, other pyramidal shapes, conical shapes, etc., as well as truncated pyramidal shapes in which the top side of these shapes is cut by a plane parallel to the base.

When the outer structure 40 is made into a pyramidal shape such as a triangular pyramid or a cone, the wind can escape along the inclined surface of the outer structure 40 as shown by the dotted line in Figure 4(a), which prevents excessive wind from entering or being received, and reduces the risk of the wind receiving body 32, the power transmission shaft 20, the outer structure 40, etc. collapsing or being damaged. This effect is particularly great when the outer structure 40 is made into a triangular shape (triangular pyramid shape), which has properties that make it resistant to external pressure.

In this embodiment, the outer structure 40 is a mesh structure with ventilation holes 41 through which wind passes and multiple truss structures to prevent collapse or damage even when exposed to strong winds. The outer structure 40 in this embodiment is configured as a truncated triangular pyramid-shaped outer structure 40 by combining three supports 40a and mesh material. The outer structure 40 can also be one with a honeycomb structure.

The configuration of the outer structure 40 is one example, and other configurations are also possible. For example, it can be configured by combining multiple long members in a diagonal lattice pattern as shown in Figure 3(a), or by a planar member with holes as shown in Figure 3(b). In either case, it is provided with ventilation holes 41 through which air can pass.

The material of the outer structure 40 is not particularly limited, but if the wind intake means 50 described below is provided, it is preferable that the outer structure 40 be made of a material that has enough strength and hardness to support the wind intake means 50. Also, if the adhesion prevention means 60 described below is provided, it is preferable that the outer structure 40 be made of a material that vibrates when struck by a striking tool 62.

If it is desired to raise the height of the wind receiving means 30, the outer structure 40 can be provided with a structure equivalent to the legs 42 (see FIG. 12) described below. If the outer structure 40 is equipped with a support 40a, a structure equivalent to the legs 42 can be provided separately, and the support 40a can be used as the legs 42.

In this embodiment, the outer structure 40 is provided with wind intake means 50 for taking in wind inside. The wind intake means 50 is a turbo device with a wind speed increasing function. As an example, the wind intake means 50 shown in Figures 4(a) to (c) is a so-called wind lens shaped structure, and multiple wind intake means 50 are attached to the outer structure 40.

As shown in Figure 4(c), the wind intake means 50 in this embodiment is in the shape of a circular ring, with one side of the periphery widening like a trumpet. Due to its structure, the wind intake means 50 takes in air through a small diameter opening (hereafter referred to as the "small diameter opening") 51 and expels it through a large diameter opening (hereafter referred to as the "large diameter opening") 52, thereby increasing the speed of the air taken in.

As shown in FIG. 4(a), multiple wind intake means 50 are attached to the outer structure 40. In this embodiment, the wind intake means 50 are installed at the same height as the wind receiving means 30 located on the inside of the outer structure 40 so that wind can be intensively sent to the wind receiving bodies 32 that constitute the wind receiving means 30 of each stage.

Multiple wind intake means 50 are provided along the circumferential direction of each stage. The wind intake means 50 of this structure are installed so that the small diameter opening 51 faces outward and the large diameter opening 52 faces inward.

The wind intake means 50 shown here is just one example, and wind intake means 50 other than those shaped like a wind lens can also be used. For example, as shown in FIG. 5(a), a wind intake means 50 equipped with a straightening net 54 inside a tube member 53 can also be used. Wind intake means 50 of this structure is installed so that the large diameter opening 55 faces outward and the small diameter opening 56 faces inward, as shown in FIG. 5(b).

By providing such a wind intake means 50, the taken-in wind can be rectified by the straightening net 54 and blown as a straight wind onto the wind receiving body 32. By blowing straightened straight wind onto the wind receiving body 32, the wind receiving body 32 can be rotated smoothly.

The orientation in which the wind intake means 50 are installed is not particularly limited, but in order to minimize the effects of turbulence, it is preferable to install each wind intake means 50 in a direction parallel to the rotation direction of the wind receiving means 30.

However, the wind intake means 50 is not a required component and can be omitted when not needed. For example, it can be omitted when the device is installed in a location where there is sufficient wind power to generate electricity even without the wind intake means 50.

As shown in Figures 6(a) and (b), the wind power generation device of the present invention may be provided with adhesion prevention means 60 for preventing the adhesion of ice and snow (hereinafter referred to as "icing, etc."). As an example, the adhesion prevention means 60 shown in Figures 6(a) and (b) includes an attachment ring 61 fixed to the power transmission shaft 20, a striking tool 62 protruding outward from the attachment ring 61, and a striking tool 63 provided on the outer structure 40.

The mounting ring 61 shown in Figures 6(a) and (b) is circular, with multiple striking tools 62 protruding outward from its outer periphery. In this embodiment, the striking tool 62 comprises a rod-shaped portion 62a and a spherical striking ball 62b attached to the tip of the rod-shaped portion 62a. The striking tools 62 may be installed at equal or unequal intervals, and the number of striking tools to be installed can be determined according to the size of the wind turbine generator, etc.

In this embodiment, the striking tool 62 is made of a material that contracts when the temperature rises and expands when the temperature drops, and the striking ball 62b comes into contact with the struck tool 63 when it expands and does not come into contact with the struck tool 63 when it contracts.

By doing this, at temperatures where icing is likely to occur, the striking ball 62b comes into contact with the struck tool 63, preventing icing, etc., and at temperatures where icing is not likely to occur, the striking ball 62b does not come into contact with the struck tool 63, preventing the generation of noise due to striking sounds.

The struck device 63 is a member that is struck by the striking ball 62b. The struck device 63 can be made of various materials, such as rubber, that can transmit vibrations generated during striking to the outer structure 40. The struck device 63 is attached to the inner surface of the outer structure 40. Multiple struck devices 63 are provided at intervals around the circumference of the outer structure 40.

In this embodiment, the mounting ring 61 and the striking tool 62 are installed at a position lower than the lowest wind receiving means 30, and the struck tool 63 is installed at a position lower than the lowest wind intake means 50. The mounting ring 61, striking tool 62, and struck tool 63 can also be installed in other locations.

The configuration of the adhesion prevention means 60 is one example, and the adhesion prevention means 60 can have other configurations. For example, an electric jack (not shown) can be connected to the mounting ring 61, and the mounting ring 61 and the striking tool 62 can be raised and lowered by the electric jack so that they hit the struck tool 63 when raised and do not hit the struck tool 63 when lowered.

In this case, a power supply unit (not shown) (e.g., a power supply unit with a thermostat) can be connected to the electric jack so that the power turns on when the temperature drops below a preset threshold (e.g., 0°C) and turns off when the temperature rises above the threshold (e.g., 0°C).

In this way, when the air temperature drops below the threshold, the power is turned on and the jack is raised, so that the striking tool 62 comes into contact with the struck tool 63, and when the air temperature rises above the threshold, the power is turned off and the jack is lowered, so that the striking tool 62 does not come into contact with the struck tool 63. When this method is adopted, the power supply device can be designed to operate using electricity generated by a wind power generation device.

Providing such adhesion prevention means 60 has the advantage that problems caused by icing and the like are less likely to occur even in cold regions, making it easier to maintain power generation efficiency. However, adhesion prevention means 60 is not a required component and can be omitted if not required.

The wind power generation device of the present invention can be installed on land as well as offshore. Installation can be performed in the same manner as in the past, and when installing on soft ground, nodular foundation piles can be used for the base of the pillars 40a (the bases supporting the three pillars 40a in the previous example).

When installing offshore, the installation method can be selected depending on factors such as the distance to the ground at the installation site. For example, a bottom-mounted method, in which the device is fixed to the seabed (ground), or a floating method, in which the device is floated on the ocean surface, can be chosen.

In a wind power generation device with the above configuration, since the multiple wind receiving means 30 are independent, even if one wind receiving means 30 fails, power generation can be continued using the other wind receiving means 30, which has the advantage of reducing the risk of power generation being stopped.

In addition, each air receiving means 30 can be handled as an independent unit, so in the event of a malfunction, only the malfunctioning air receiving means 30 needs to be replaced, and the remaining (non-malfunctioning) air receiving means 30 can continue to be used, providing the advantages of excellent maintainability and cost-effectiveness.

The electricity generated by the wind power generation device of the present invention can of course be used as a normal power source, but it can also be used for other purposes. For example, it could be used to generate hydrogen by electrolyzing river or seawater.

The wind power generation device of the present invention can be made compact and has a high degree of freedom in terms of installation location, so it can be installed in areas with good infrastructure conditions and a hydrogen production facility can be installed nearby, creating an environment for the accumulation of green energy. This can contribute to industrial promotion and also help with regional revitalization. In the future, it is expected that a regional power grid will be established and the device can be used for facilities and regional power.

Furthermore, unlike propeller-type wind power generation devices, the wind power generation device of the present invention does not have a huge exposed propeller that rotates, so there is a greater degree of freedom in where it can be installed compared to propeller-type wind power generation devices. For example, it can be expected to be used to act as a windbreak against the wind blowing from high-rise buildings, which is a problem in urban areas, while also contributing to the power supply in the area where it is installed.

The configuration of the wind power generation device described in the above embodiment is an example, and the configuration of the wind power generation device of the present invention is not limited to the configuration of the above embodiment. As an example, the following modified examples are possible.

--Modification 1 of wind receiving means--
In the above embodiment, an example is given in which the wind receiving body 32 is provided only on the upper side of the turntable 31, but the wind receiving body 32 can also be provided on the bottom side of the turntable 31 in addition to the upper side.

Specifically, as shown in Figures 7 and 8(a) and (b), a wind receiver 34 (for ease of explanation, hereafter referred to as a "semi-bowl-shaped wind receiver") having a shape of half a roughly hemispherical (bowl-shaped) member with a recess (wind receiver recess) 34a can be provided on the bottom side of the rotating disk 31 of each wind receiving means 30. Like the wing-shaped wind receiver 32, the semi-bowl-shaped wind receiver 34 can also be made of aluminum, FRP (fiber reinforced plastic), etc.

The number of semi-bowl-shaped wind receivers 34 can be the same as or different from the number of wing-shaped wind receivers 32 installed on the upper side of the rotating disk 31. If the number is different, the number can be more or less than the number of wing-shaped wind receivers 32.

The semi-bowl-shaped wind receiver 34 installed on the bottom side of the rotating plate 31 can be installed directly below the wing-shaped wind receiver 32 installed on the top side of the rotating plate 31, or it can be installed at a position offset from the wing-shaped wind receiver 32.

It is preferable that the opening periphery 34b of the semi-bowl-shaped wind receiver 34 narrows inward so that wind can easily enter the semi-bowl-shaped wind receiver 34. The degree of narrowing can be designed as appropriate. When semi-bowl-shaped wind receivers 34 are provided, it is preferable that each wind receiving means 30 has an asymmetrical structure so that rotational forces are less likely to be cancelled out between the semi-bowl-shaped wind receivers 34.

--Modification 2 of wind receiving means--
In the above embodiment and the first modified example of the wind receiving means, only the wing-shaped wind receiver 32 is provided on the upper surface side of the rotating disk 31, but the half-bowl-shaped wind receiver 34 described in the first modified example of the wind receiving means can also be provided on the upper surface side of the rotating disk 31 in addition to or instead of the wing-shaped wind receiver 32. One or more half-bowl-shaped wind receivers 34 can be provided on the upper surface side of the rotating disk 31.

In this case, it is preferable to install the semi-bowl-shaped wind receiver 34 in a position where it does not interfere with the wing-shaped wind receiver 32 or other semi-bowl-shaped wind receivers 34, such as below the wing-shaped wind receiver 32 or between adjacent wing-shaped wind receivers 32. In either case, it is preferable to install the semi-bowl-shaped wind receiver 34 so that its opening is in the same direction as the curved tip of the wing-shaped wind receiver 32; in other words, when wind is received from the curved tip of the wing-shaped wind receiver 32 toward the sharp rear end, the wind will enter the semi-bowl-shaped wind receiver 34 from its opening.

Even when the half-bowl-shaped wind receiver 34 is provided on the top side of the turntable 31 as in this modified example, the half-bowl-shaped wind receiver 34 can be provided on the bottom side of the turntable 31 in the same manner as modified example 1 of the wind receiving means. When the half-bowl-shaped wind receiver 34 is provided on both the top and bottom of the turntable 31, it can be provided in the same position on the top and bottom, or in different positions (offset from the top and bottom). Also, when multiple turntables 31 are provided, the wing-shaped wind receiver 32 and the half-bowl-shaped wind receiver 34 can be provided in the same position on each turntable 31, or in different positions (offset from the wing-shaped wind receiver 32 and the half-bowl-shaped wind receiver 34 of the other turntables 31).

--Modification 3 of wind receiving means--
In the above embodiment and in the first and second variants of the wind receiving means, an example is given in which the rotating disks 31 of the three stages of wind receiving means 30 have the same diameter (area), but the rotating disks 31 of the wind receiving means 30 of each stage can also have different diameters (areas).

When using turntables 31 with different areas, the area can be made larger from the top to the bottom, or from the bottom to the top.

-Other modified configurations-
In the above embodiment, an example is given of the mounting ring 61, the striking tool 62 and the struck tool 63 being arranged in a single stage, but the mounting ring 61, the striking tool 62 and the struck tool 63 can also be arranged in multiple stages spaced apart in the vertical direction.

In the above embodiment, the generator 10 is provided at the lower end of the power transmission shaft 20, but the generator 10 can also be provided at other locations. For example, it can be provided at the upper end of the power transmission shaft 20, as shown in FIG. 9(a). In this case, the lower end of the power transmission shaft 20 can be supported by a bearing.

In the above embodiment, one generator 10 is used as an example, but two or more generators 10 can be provided. In this case, for example, one generator can be provided at the upper end and one at the lower end of the power transmission shaft 20 as shown in FIG. 9(b), or they can be provided at intervals in the axial direction of the power transmission shaft 20 as shown in FIG. 9(c). When two or more generators 10 are provided, one can be provided for each wind receiving means 30.

When two or more generators 10 are installed, as shown in FIG. 10, an inner support 22 serving as a core is erected, and a cylindrical power transmission shaft 20 is placed on the outside of the inner support 22 via a bearing 23, so that each power transmission shaft 20 can rotate independently.

Each power transmission shaft 20 is provided for each generator 10, and one power transmission shaft 20 is connected to each generator 10. When each power transmission shaft 20 rotates, electricity is generated by the generator 10 to which the power transmission shaft 20 is connected.

In this case, the generator 10, the power transmission shaft 20, and the wind receiving means 30 provided on the power transmission shaft 20 function as one power generation unit 24. As a result, even if one power generation unit 24 fails, power generation can be continued by the other power generation units 24, reducing the risk of power generation being stopped.

As in the case where two or more generators 10 are provided, even when there is only one generator 10, a cylindrical power transmission shaft 20 can be used that is placed on the outside of the inner support 22 via a bearing 23.

Although not explained in the above embodiment and in modified examples 1 to 3 of the wind receiving means, the power transmission shaft 20 can also be provided with a gearbox that amplifies the rotational force and transmits it to the generator 10, or a brake device that reduces the rotational speed of the rotating disk 31 and the power transmission shaft 20 in strong winds.

Although not explained in the above embodiment and variants 1 to 3 of the wind receiving means, when a half-bowl-shaped wind receiving body 34 is provided on both the top and bottom surfaces or on one surface of the rotating plate 31, an opening (hereinafter referred to as a "passing opening") 35 for passing dust and air can be formed in the part of the rotating plate 31 where the half-bowl-shaped wind receiving body 34 is installed (the part of the rotating plate 31 covered by the half-bowl-shaped wind receiving body 34), as shown in Figures 11 (a) to (c).

The passage openings 35 can be provided over the entire area where each half-bowl-shaped wind-receiving body 34 is installed, or can be provided only in part of it. If provided only in part of it, it is preferable to provide it more than halfway inside the wind-receiving body recess 34a.

When the semi-bowl-shaped wind receivers 34 are provided at the same location on both the top and bottom surfaces of the rotating plate 31, a common passage opening 35 can be provided on both semi-bowl-shaped wind receivers 34 so that the wind that enters the wind receiver recess 34a of the upper semi-bowl-shaped wind receiver 34 passes through the passage opening 35 and enters the wind receiver recess 34a of the lower semi-bowl-shaped wind receiver 34, or the wind flows in the opposite direction.

If a passage opening 35 is provided in the area where the semi-bowl-shaped wind receiver 34 is installed, the wind that enters the semi-bowl-shaped wind receiver 34 will generate lift on the semi-bowl-shaped wind receiver 34, and it is expected that the rotational force of the turntable 31 will increase.

In the above embodiment and variations 1 to 3 of the wind receiving means, a case where multiple wind lenses are attached to the ventilation opening 41 of the outer structure 40 as the wind intake means 50 is shown as an example, but the ventilation opening 41 can also be structured to double as the wind intake means 50. Specifically, by making the ventilation opening 41 into a wind lens shape, the ventilation opening 41 can be structured to double as the wind intake means 50.

In the above embodiment, the striking tool 62 is made of a material that contracts when the temperature rises and expands when the temperature drops, but the struck tool 63 can also be made of the same material. In some cases, both can be made of the same material.

In the above embodiment, an example is given in which the mounting ring 61 is raised and lowered by an electric jack, but it is also possible to raise and lower the striking device 63. For example, a ring-shaped base seat with the striking device 63 protruding inward is installed on the inner surface of the outer structure 40, and the base seat is raised and lowered by an electric jack, thereby achieving the same effect as when the mounting ring 61 is raised and lowered by an electric jack.

In the above embodiment and variations 1 to 3 of the wind receiving means, a vertical wind power generator with a vertical axis of rotation is used as an example, but the wind power generator of the present invention can also be a horizontal wind power generator with a horizontal axis of rotation. In this case, the rotating disk 31 is oriented vertically, and the surfaces that would have been the top and bottom in the vertical type face outward in both horizontal directions.

In the above embodiment, the outer structure 40 is a cone shape, but the outer structure 40 can also be a tube shape (cylindrical shape in the illustrated example) as shown in FIG. 12.

The outer structure 40 shown in FIG. 12 has multiple legs 42 and a cylindrical body 43 with a bottom supported by the legs 42. As with the outer structure 40 of the above embodiment, the body 43 of the outer structure 40 in FIG. 12 can also be a mesh structure with a vent 41 through which air passes and multiple truss structures or honeycomb structures. The body 43 may be in the shape of a square tube, etc.

Fences and other structures may be installed on the rooftops of buildings, and if the wind-receiving means 30 is positioned low, it may be difficult for it to receive the wind. By providing the outer structure 40 with legs 42, however, the height of the wind-receiving means 30 is increased, which has the advantage of making it easier for the wind-receiving means 30 to receive the wind.

In addition, by making the shape of the outer structure 40 cylindrical, such as a square tube, there is less dead space than when the outer structure 40 is cone-shaped, and this has the advantage that a larger number of structures can be installed.

The configuration of the above embodiment is an example, and the configuration of the wind power generation device of the present invention is not limited to the above configuration. The configuration of the wind power generation device of the present invention can be modified, such as by adding, replacing, deleting, etc., as appropriate, to the extent that the intended purpose can be achieved.

The wind power generation device of the present invention can be used not only as an onshore wind power generation device installed on land, but also as an offshore wind power generation device installed on the sea. It can also be used as a shipboard wind power generation device installed on a ship (for example, a large tanker). The wind power generation device of the present invention can be designed to a height of less than 10 m, preferably less than 5 m, and can be suitably used as a small household power generation device capable of generating approximately 1 to 10 kW. When used as a household power generation device, it can be efficiently generated by installing it in a well-ventilated place (for example, on the roof of a detached house or apartment building) or between adjacent houses. The wind power generation device of the present invention can also be used as a power generation device to secure a power source for lighting used during aquaculture, lighting and temperature control devices used in food cultivation facilities in greenhouses, etc.

REFERENCE SIGNS LIST 10 Generator 20 Power transmission shaft 21 Bearing 22 Inner support 23 Bearing 24 Power generation unit 30 Wind receiving means 31 Rotating disk 32 Wind receiving body (wing-type wind receiving body)
32a: bottom surface portion 32b: top surface portion 33: bracket 34: wind receiving body (half bowl-shaped wind receiving body)
34a Recess (wind receiving body recess)
34b Opening periphery 35 Passage opening 40 Outer structure 40a Support 41 Ventilation hole 42 Leg 43 Body 50 Air intake means 51 Small diameter opening 52 Large diameter opening 53 Pipe member 54 Flow straightening net 55 Large diameter opening 56 Small diameter opening 60 Adhesion prevention means 61 Mounting ring 62 Striking tool 62a Rod-shaped part 62b Striking ball 63 Striked tool

Claims

In a wind power generating device,
A rotatably mounted power transmission shaft;
A rotating disk connected to the power transmission shaft;
One or more wind receiving bodies provided on the rotating disk;
a generator connected to the power transmission shaft,
The wind-receiving body has a first surface and a second surface different from the first surface, and is shaped such that when the first surface receives wind, lift is generated on the second surface side.
A wind power generating device comprising:
The wind turbine generator according to claim 1,
The cross-sectional shape of the wind-receiving body is an airfoil.
A wind power generating device comprising:
The wind turbine generator according to claim 1,
The wind-receiving body is a half-bowl-shaped body with a recess for receiving the wind.
A wind power generating device comprising:
The wind turbine generator according to claim 3,
A passage opening is provided in the part of the rotating disk covered with a half-bowl-shaped wind receiving body.
A wind power generating device comprising:
The wind turbine generator according to claim 1,
Two or more wind receiving bodies are provided,
The two or more wind receiving bodies are provided in a positional relationship that is not point symmetrical.
A wind power generating device comprising:
The wind turbine generator according to claim 1,
The wind receiving body is provided on both or either of the top and bottom surfaces of the rotating plate.
A wind power generating device comprising:
The wind turbine generator according to claim 1,
An outer structure is provided on the outside of the power transmission shaft, the rotating disk, the wind receiving body and the generator.
A wind power generating device comprising:
The wind turbine generator according to claim 7,
The outer structure is provided with a wind intake means for increasing the wind speed and taking it into the inside of the outer structure.
A wind power generating device comprising: