JP2016056735A - Wind power generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wind power generator capable of performing sufficient wind power generation even at a location where weak wind blows.SOLUTION: This invention relates to a wind power generator 100 comprising: wind inlet segments 20 having the first wind inlets 24 arranged therein; a flow passage section gradual reducing segment 30 for gradually reducing a flow passage sectional area for wind taken through the first wind inlets 24 cooperatively arranged at the wind inlet segments 20; a cylindrical body 40 cooperatively arranged at the flow passage section gradual reducing segment 30, having the second wind inlets 44 at an outer wall 42 thereof and having openable or closable vertical louvers 46 at the second wind inlets 44; and a power generator 50 installed in an inner space of the cylindrical body 40 so as to generate electricity by wind passing through the inner space of the cylindrical body 40.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a wind power generator, and more specifically, provided in an internal space of a cylindrical body by an ascending air current that is raised by a draft effect (also called a chimney effect) of natural wind taken into the internal space of the cylindrical body. The present invention relates to a wind turbine generator that causes a power generator to generate power by rotating a rotary blade.

  In order to prevent depletion of underground resources and global warming, it is strongly desired to provide a power generation apparatus that does not require fuel for power generation and that does not emit carbon dioxide during power generation. As such a power generation device, there is a power generation method using so-called natural energy, and specifically, a solar power generation device, a wind power generation device, a micro hydropower generation device, and the like are known. In these power generators using natural energy, there is no carbon dioxide emission during power generation, and there are almost infinite energy sources necessary for power generation, but the amount of energy supplied to the power generator is not constant, so the amount of power generation is inadequate. It tends to be stable and hinders its spread.

  The applicant has already filed an application (see Patent Document 1) relating to a wind power generator that is one of these power generators using natural energy, and has also conducted a demonstration experiment.

Registered Utility Model No. 3169269

  According to the wind power generator disclosed in Patent Document 1, the wind taken in the cylindrical body is raised, and power is generated by rotating the rotating blades disposed in the internal space of the cylindrical body. The location of the problem that the amount of air taken into the cylindrical body may be insufficient and the rotating blades may not be rotated sufficiently has been clarified.

  Therefore, the present invention significantly increases the flow velocity in the inner space of the cylindrical body by significantly reducing the cross-sectional area of the cylindrical body than the wind intake portion, and is disposed in the inner space of the cylindrical body. The purpose of the present invention is to provide a power generation device that greatly improves the power generation efficiency by improving the operating rate and power generation amount of the generated power generation device.

In order to solve the above problems, the present inventor has intensively studied, and as a result, has come up with the following configuration.
That is, the air intake section in which the first air intake opening is disposed, and the flow passage cross-sectional area of the air taken in from the first air intake opening are gradually reduced. A flow passage cross-sectionally decreasing portion and a flow passage cross-sectionally decreasing portion are provided, a second wind intake port is formed on the outer peripheral surface, and a louver that can be opened and closed is disposed at the second wind intake port. A wind turbine generator comprising: a cylindrical body; and a power generator that is disposed in an internal space of the cylindrical body and generates power by wind passing through the internal space of the cylindrical body. .

  As a result, the wind speed in the internal space of the cylindrical body in which the power generation device is disposed can be higher than the wind speed when the air is taken in from the first wind intake portion, and the air flow passing through the internal space of the cylindrical body Can be spiraled. Therefore, even when the intake wind speed at the first wind intake section (the wind speed of the natural wind in the external environment) is low, power can be generated by the power generation device disposed in the internal space of the cylindrical body. Compared with the power generation device, the power generation efficiency can be greatly improved.

  The first wind inlet may be provided with a wind inlet damper capable of adjusting at least one of the opening area and the wind entry angle with respect to the opening surface of the first wind inlet. preferable.

  Thereby, the flow of the air taken in from the 1st wind taking-in part can be converted into the flow along the extension direction of a cylindrical body. Further, by adjusting the opening area in the first wind intake portion so that the wind speed passing through the inner space of the cylindrical body does not increase excessively, the power generation device disposed in the inner space of the cylindrical body is prevented from being damaged. can do.

  It is preferable that the second wind intake port is disposed at a plurality of locations in the extending direction of the cylindrical body.

  As a result, it is possible to apply a force to rotate the air flow at a plurality of locations in the cross section in the direction perpendicular to the extending direction of the tubular body with respect to the air flow passing through the internal space of the tubular body in the extending direction of the tubular body. The air flow that passes through the internal space of the cylindrical body can be surely spiraled.

  Moreover, it is preferable that the opening area of the said 1st wind intake port is 10 times or more of the flow-path cross-sectional area of the said cylindrical body.

  As a result, the flow velocity of the air flow passing through the internal space of the cylindrical body can be made 10 times or more the flow velocity at the first wind intake port, so that it was not possible to generate power with the conventional wind power generator. It will be possible to generate wind power at the location.

  It is preferable that the outer peripheral surface of the cylindrical body is colored so that the brightness gradually decreases as it approaches the tip end portion of the cylindrical body from the wind intake portion side.

  Thereby, the surface of the outer wall which is the outer peripheral surface of the cylindrical body is heated by sunlight, so that the air passing through the respective internal spaces of the cylindrical body can be expanded, and the draft effect in the cylindrical body can be enhanced. The amount of power generation can be increased.

  According to the wind power generator according to the present invention, the wind speed in the internal space of the cylindrical body in which the power generator is disposed can be significantly higher than the wind speed when taken from the first wind take-in part, It can be made a spiral flow by the wind taken in from two wind intakes. Thereby, even if the speed of the wind taken in from the 1st wind taking-in part is low, the speed of the airflow which passes through the internal space of a cylindrical body turns into a spiral flow which has sufficient speed, and a cylindrical body The operating rate of the power generation device disposed in the interior space of the battery is improved. In addition, since the amount of power generation increases due to an increase in the wind speed in the internal space of the cylindrical body, the power generation efficiency can be greatly improved as compared with the conventional power generation apparatus.

It is a front view of the wind power generator concerning a 1st embodiment. It is a left view of the wind power generator concerning a 1st embodiment. It is a partially transparent front view which shows the internal structure of the wind power generator concerning 1st Embodiment. FIG. 4 is an end view taken along line 4-4 in FIG. 1. It is explanatory drawing which showed the principal part of the wind power generator concerning 2nd Embodiment. It is explanatory drawing which showed the principal part of the wind power generator concerning 2nd Embodiment.

(First embodiment)
Embodiments of a wind turbine generator according to the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 to 4, the wind turbine generator 100 according to the present embodiment includes a wind intake unit 20 constructed on the ground surface 10 that is an installation surface, and a flow that is connected to the wind intake unit 20. A road section gradually decreasing portion 30, a cylindrical body 40 that is connected to the flow path sectional gradually decreasing portion 30 and extends in a direction away from the ground surface 10, and a power generation device that is disposed in the internal space of the cylindrical body 40 And a wind turbine 50 for power generation.

  The wind intake portion 20 has a steel frame body 21 erected on the ground surface 10 and four outer walls 22 covering the outer surface of the steel frame body 21 (see FIGS. 2 and 3). A first wind inlet 24 is disposed on the outer wall 22 on the front side. The first air intake port 24 is a horizontal air intake damper that adjusts the opening area of the first air intake port 24 and the wind entrance angle with respect to the opening surface of the first air intake port 24. A louver 26 is provided.

  In the present embodiment, as shown in FIG. 1, a plurality of first air intake ports 24 are arranged in a matrix arrangement of 3 rows and 5 columns with respect to the outer wall 22 on the front side. The opening areas of the first wind inlets 24 are all the same area. In addition, the open / close state of the horizontal louver 26 disposed in the first wind inlet 24 is provided so that it can be adjusted manually or automatically in a plurality of steps or in a stepless manner. The horizontal louver 26 rotates a louver plate disposed in the horizontal direction around a horizontal axis. In the present embodiment, the first wind intake port 24 is provided on the outer wall 22 on the front side, but the outer wall on which the first wind intake port 24 is to be provided according to the installation location of the wind turbine generator 100. A plurality of surfaces or the entire surface 22 can be appropriately selected.

  A flow passage section gradually decreasing portion 30 formed in a square pyramid shape having a hollow structure is connected to the upper portion of the wind intake portion 20. The cross-sectional area of the internal space, which is the air flow path, in the flow path cross-sectionally decreasing portion 30 gradually decreases as the air flow section 20 moves away (approaches the cylindrical body 40). The flow passage cross-sectional gradually decreasing portion 30 of the present embodiment is connected to the tubular body 40 with respect to the cross-sectional area of the flow passage in the connection portion (A portion in FIG. 1) with the wind intake portion 20 (in FIG. 1). The cross-sectional area of the channel in (B portion) was set to 1/15.

  A tubular body 40 having a rectangular cross section is connected to the channel cross-section gradually decreasing portion 30. The internal space of the cylindrical body 40 is formed to have a constant flow path cross-sectional area in the height direction. The flow path cross-sectional area of the cylindrical body 40 in this embodiment is equal to the opening area of one location of the first air intake port 24 in a state where the horizontal louver 26 is removed (the flow path cross-section gradually decreasing portion 30 and the cylindrical body 40 (The same area as the cross-sectional area of the flow path in the connecting portion). Thus, since the cross-sectional area in the air flow passage of the cylindrical body 40 is set to 1/15 with respect to the total cross-sectional area of the first air intake port 24 that is the opening area in the air intake portion 20, the cylinder The speed of the air rising in the cylindrical body 40 (winding speed in the cylindrical body) can be increased to about 15 times the speed of the wind taken in from the first wind intake port 24 (wind speed at the time of wind taking-in).

  Moreover, the 2nd wind intake port 44 is arrange | positioned by the outer wall 42 of the front side which is a part of outer peripheral surface of the cylindrical body 40 in this embodiment. The second wind intake port 44 has the amount of air taken into the internal space of the cylindrical body 40 from the second wind intake port 44 and the direction of the wind entering the internal space of the cylindrical body 40 (arrow A in FIG. 4). A vertical louver 46 is provided for each adjustment. As shown in FIG. 1, the vertical louvers 46 in this embodiment are arranged at a plurality of locations in the height direction of the cylindrical body 40. The vertical louver 46 is preferably capable of remotely operating the state of the louver plate 46A in a plurality of steps or in a stepless manner. As shown in FIG. 4, the vertical louver 46 rotates the louver plate 46A around the vertical axis 46B.

  By disposing such a vertical louver 46, a force (in the direction orthogonal to the plane of FIG. 4) for passing (raising) the internal space of the cylindrical body 40 to rotate in a horizontal plane ( Arrows A and B) in the figure can be applied over the required height range. Therefore, it is advantageous in that the air flow rising in the internal space of the tubular body 40 can be easily made into a spiral flow. Compared with the rotational speed of the power generation windmill 50 by the air flow simply raised in the internal space of the cylindrical body 40, the power generation windmill 50 when the internal space of the cylindrical body 40 is raised by the spiral flow The number of rotations can be higher, and is preferable in that the amount of power generation can be significantly increased as compared with conventional power generation devices.

  In addition, the outer wall 42 of the cylindrical body 40 in the present embodiment is coated so that the brightness gradually decreases as it approaches the tip (upper end) of the cylindrical body 40 from the connection portion with the flow path cross-sectionally decreasing portion 30. Has been. By painting the surface of the outer wall of the cylindrical body 40 in this way, the temperature increase due to sunlight irradiation on the outer wall 42 of the cylindrical body 40 is utilized, and the air passing through the inner space of the cylindrical body 40 is expanded. Thus, the flow rate of the air passing through the internal space of the cylindrical body 40 can be further increased. Therefore, it is preferable that the color used for the coating of the outer wall 42 of the cylindrical body 40 is black.

  Further, the wind turbine 50 for power generation in the present embodiment includes a rotating blade 52, a speed increaser 54 connected to a rotation shaft of the rotating blade 52, and a generator 56 that is rotationally driven via the speed increaser 54. . Since the wind speed rising in the internal space of the tubular body 40 has a sufficient speed as described above, the generator 56 can be sufficiently rotated even through the speed increaser 54. Thereby, the electric power generation amount by the generator 56 can further be increased. The configuration of the speed increaser 54 in the wind turbine 50 for power generation can be omitted.

  A power generation mechanism using the wind power generator 100 according to the present embodiment will be described. Natural wind generated around the wind power generator 100 is taken into the internal space of the wind take-in portion 20 from the first wind take-in port 24 whose opening area and take-in angle are adjusted by the horizontal louver 26. The natural wind blown in the horizontal direction with respect to the wind intake portion 20 flows into the flow passage cross-section gradually decreasing portion 30 in a state of rising in the internal space of the wind intake portion 20 by the horizontal louver 26. By passing through the internal space of the channel cross-section gradually decreasing portion 30, the speed of the air flow is supplied to the cylindrical body 40 in a state in which it is greatly increased with respect to the speed when it is taken into the wind intake portion 20. Will be. The wind supplied to the cylindrical body 40 in the state of being accelerated in this way rises in the internal space of the cylindrical body 40 due to the draft effect.

  Further, external wind (air) is also taken into the internal space of the tubular body 40 from the second wind intake port 44 disposed on the outer wall 42 of the tubular body 40. As a result, as shown by arrows A and B in FIG. 4, a force for rotating the air flow rising in the inner space of the cylindrical body 40 in the horizontal plane is applied. That is, the flow of air that passes (rises) through the internal space of the cylindrical body 40 is a spiral flow, and the wind turbine 50 for power generation is supplied with a spiral flow (tornado-shaped flow) of air. By supplying the spiral flow of air to the power generation wind turbine 50, it is possible to generate more power than the amount of power generated by the power generation wind turbine 50 to which a simple upward flow is supplied.

(Second Embodiment)
5 and 6 show the main part of the wind turbine generator according to the second embodiment.
The wind power generator 100 according to the present embodiment is characterized by a structure for attaching the wind turbine 50 for power generation to the tubular body 40. The power generation windmill 50 is attached to the tubular body 40 via an attachment casing 60.

  The mounting casing 60 is provided with a cylindrical portion 62 having a diameter slightly larger than the diameter of the wind turbine 50 for power generation, a funnel portion 64 connected to the upper portion of the cylindrical portion 62, and an outer peripheral surface of the cylindrical portion 62. And has a flange portion 66 that closes a gap portion between the cylindrical portion 62 and the cylindrical body 40. The mounting casing 60 is disposed in the internal space of the tubular body 40 via a flange portion 66 or a fixture (not shown) attached to the flange portion 66.

  In this manner, the wind turbine 50 for power generation is disposed in the internal space of the cylindrical body 40 via the mounting casing 60, so that the flange portion 66 near the mounting position of the wind turbine 50 for power generation is provided by the flange portion 66. A scaffold can be formed inside. By providing an access location from the outside of the tubular body 40 to the mounting casing 60 inside the tubular body 40, the power generation windmill 50 can be maintained at the position where the power generation windmill 50 is disposed. Is convenient.

  Further, since the gap between the tubular body 40 and the wind turbine 50 for power generation is covered with the flange portion 66, all of the spiral flow of air that rises in the internal space of the tubular body 40 is transferred to the cylindrical portion 62. After being concentrated, it is supplied to the wind turbine 50 for power generation. Thereby, the windmill 50 for electric power generation can be rotated by the air flow faster than the speed of the air flow in the internal space of the cylindrical body 40, and electric power generation amount can be increased.

  Although not shown, the flange portion 66 flows from the inner space of the cylindrical body 62 to the inner space of the cylindrical portion 62 and the first flange portion as a scaffold standing upright on the outer surface of the cylindrical portion 62. The second flange portion as a closing plate that closes the gap between the tubular body 40 and the mounting casing 60 in a state where the air inflow resistance from the tubular body 40 to the cylindrical portion 62 is reduced by gradually reducing the road cross section. A configuration having the following may be adopted.

As described above, since the wind turbine generator 100 according to the present invention has a very simple structure, the manufacturing cost and maintenance cost of the wind turbine generator 100 can be reduced. Moreover, since the structure of the wind power generator 100 is simple, the frequency of occurrence of failures is low, the reliability is high, and the power generation cost of the wind power generator can be significantly reduced.
As described above, it is possible to provide the wind power generator 100 having a low power and high power generation efficiency while having a low cost and simple configuration as compared with the conventional power generator, and wind power generation can be widely spread.

  Although the wind turbine generator 100 according to the present invention has been described above based on the present embodiment, the technical scope of the wind turbine generator 100 according to the present invention is not limited to the above embodiment. For example, in the above-described embodiment, a mode in which only one power generation windmill 50 as a power generation device is disposed in the internal space of the cylindrical body 40 is described. You may arrange | position in the multiple places of an extending | stretching direction.

  Although not shown, a wind guide body formed in a spiral shape may be disposed in the internal space of the flow path cross-sectional gradually decreasing portion 30. By disposing such a wind guide body in the internal space of the flow passage cross-section gradually decreasing portion 30, an air flow that passes through the internal space of the tubular body 40 even when the second wind intake port 44 is closed is provided. It is advantageous in that it can be a spiral flow.

  Furthermore, although embodiment which provided the 1st wind intake port 24 only in the outer wall 22 of the front side among the outer walls 22 of the wind intake part 20 was demonstrated, the mechanical strength of the wind intake part 20 is enough If it can be ensured, the first wind inlets 24 may be provided on a plurality or all of the outer walls 22 of the wind inlet 20. Similarly, in the outer wall 42 of the cylindrical body 40, the embodiment in which the second wind intake port 44 is provided only on the outer wall 42 on the front side has been described. Two wind intakes 44 can also be provided.

  Moreover, although the 1st wind intake port 24 of the wind intake part 20 employ | adopted the matrix-like arrangement | sequence of 3 rows and 5 columns, it is not limited to this arrangement | sequence. A form in which the arrangement form of the first wind inlets 24 is appropriately adjusted according to the conditions of the installation location of the wind turbine generator 100 can be adopted.

  As described above, by arranging the first wind inlets 24 in the plurality of outer walls 22 of the wind inlet part 20, the number of the first wind inlets 24 disposed on one surface of the outer wall 22 can be reduced. It becomes possible. As a result, the planar area of the wind take-in portion 20 can be reduced, and an effect that the installation area of the wind power generator 100 can be reduced can be obtained.

  Moreover, in the above embodiment, since the cylindrical body 40 has a quadrangular cross-sectional shape, the planar shape of the wind intake portion 20 is also formed in a square shape, but the cylindrical body 40 and the wind intake portion 20 are also formed. The planar shape is not limited to a rectangular shape, and can be formed in an arbitrary cross-sectional shape. Further, the channel cross-section gradually decreasing portion 30 reduces the channel cross-sectional area on the connection side with the tubular body 40 to about 1/10 to 1/20 with respect to the channel cross-sectional area on the connection side with the wind intake portion 20. It can be reduced, and is not limited to a truncated cone or polygonal truncated cone. Moreover, the cylindrical body 40 can also employ a form in which the flow path cross-sectional area gradually decreases as it approaches the tip.

  In the embodiment described above, the outer wall 42 of the cylindrical body 40 is coated so that the brightness gradually decreases as it proceeds from the flow passage cross-section gradually decreasing portion 30 side to the tip (upper end) side of the cylindrical body 40. As described above, the entire outer surface of the wind turbine generator 100 can be coated so that the brightness gradually decreases in the same manner from the wind intake portion 20 to the tip of the cylindrical body 40.

  Furthermore, although the wind power generator 100 in the above embodiment has been described in the form of standing on the ground surface, a planar arrangement may be employed depending on the conditions of the installation location of the wind power generator 100. That is, you may install the wind-intake part 20, the flow-path cross-section gradually decreasing part 30, and the cylindrical body 40 in the order of these description from the windward to the leeward. At this time, the first wind inlet 24 is placed upright with respect to the ground surface. By adopting such a form, the flow of the wind taken into the wind power generator 100 passes straight from the first wind inlet 24 to the tip of the cylindrical body 40 (the outlet of the wind power generator 100). This is advantageous in that the flow velocity loss due to the bending of the air flow inside the wind turbine generator 100 can be reduced.

  Furthermore, the form which combined the above embodiment and said modification arbitrarily can also be employ | adopted.

10 Installation surface (ground surface),
20 Wind intake part,
21 steel frame, 22 outer wall, 24 first air intake, 26 horizontal louver,
30 Gradually decreasing section of the channel
40 cylindrical body, 42 outer wall, 44 second wind inlet,
46 vertical louver, 46A louver plate, 46B vertical axis,
50 wind turbines for power generation, 52 rotating blades, 54 gearboxes, 56 generators,
60 Casing for mounting, 62 cylindrical part, 64 funnel part, 66 flange part 100 wind power generator

In order to solve the above problems, the present inventor has intensively studied, and as a result, has come up with the following configuration.
That is, the air intake section in which the first air intake opening is disposed, and the flow passage cross-sectional area of the air taken in from the first air intake opening are gradually reduced. A flow passage cross-sectionally decreasing portion and a flow passage cross-sectionally decreasing portion are provided, a second wind intake port is formed on the outer peripheral surface, and a louver that can be opened and closed is disposed at the second wind intake port. A cylindrical body, and a power generation device that is disposed in the internal space of the cylindrical body and generates electric power by wind passing through the internal space of the cylindrical body, and the outer peripheral surface of the cylindrical body has the wind The wind turbine generator is characterized by being colored so that the brightness gradually decreases as it approaches the tip of the cylindrical body from the intake portion side .

As a result, the wind speed in the internal space of the cylindrical body in which the power generation device is disposed can be higher than the wind speed when the air is taken in from the first wind intake portion, and the air flow passing through the internal space of the cylindrical body Can be spiraled. Therefore, even when the intake wind speed at the first wind intake section (the wind speed of the natural wind in the external environment) is low, power can be generated by the power generation device disposed in the internal space of the cylindrical body. Compared with the power generation device, the power generation efficiency can be greatly improved. In addition, the surface of the outer wall, which is the outer peripheral surface of the cylindrical body, is heated by sunlight, so that the air passing through the inner space of the cylindrical body can be expanded, and the draft effect in the cylindrical body can be enhanced, and the power generation amount can be increased. Can be increased.

According to the wind power generator according to the present invention, the wind speed in the internal space of the cylindrical body in which the power generator is disposed can be significantly higher than the wind speed when taken from the first wind take-in part, It can be made a spiral flow by the wind taken in from two wind intakes. Thereby, even if the speed of the wind taken in from the 1st wind taking-in part is low, the speed of the airflow which passes through the internal space of a cylindrical body turns into a spiral flow which has sufficient speed, and a cylindrical body The operating rate of the power generation device disposed in the interior space of the battery is improved. In addition, since the amount of power generation can be increased by increasing the wind speed in the internal space of the cylindrical body using the temperature rise caused by sunlight irradiation , the power generation efficiency is greatly improved compared to conventional power generation devices. be able to.

Claims (5)

A wind intake section in which the first wind intake port is disposed;
A flow passage cross-section gradually decreasing portion that is provided continuously with the wind intake portion and gradually reduces a flow passage cross-sectional area of the wind taken in from the first wind intake port;
A cylindrical body that is connected to the flow path cross-sectionally decreasing portion, has a second wind intake port formed on the outer peripheral surface, and has a louver that can be opened and closed at the second wind intake port;
A wind power generator, comprising: a power generator that is disposed in an inner space of the cylindrical body and generates electric power by wind passing through the inner space of the cylindrical body.   The first air intake opening is provided with a wind intake damper capable of adjusting at least one of the opening area and the wind entrance angle with respect to the opening surface of the first air intake opening. The wind power generator according to claim 1.   The wind power generator according to claim 1 or 2, wherein the second wind intake port is disposed at a plurality of locations in the extending direction of the cylindrical body.   The wind power generator according to any one of claims 1 to 3, wherein an opening area of the first wind intake port is 10 times or more a flow path cross-sectional area of the cylindrical body.   The outer peripheral surface of the cylindrical body is colored so that the brightness gradually decreases as it approaches the tip end portion of the cylindrical body from the wind intake portion side. The wind power generator as described in any one of.

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