JP2003120499A - Wind mill/water turbine with vertical axis, wave activated generator, and wind power generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wind mill/water turbine with the vertical axis which is efficiently rotated to both the two-way flow or the one-way flow of the fluid at a relatively constant pressure and low speed, a wave activated generator, a wind power generator, and a micro hydraulic power generator using the wind mill/water turbine. SOLUTION: (A) In the wind mill/water turbine comprising a rotating body 30 with a plurality of recessed rotating blades 5 around a rotary shaft 6 or an inner cylinder 7 integrated therewith and a casing 8 therearound, first to fourth flow passages with an opening/closing passage means built therein are disposed around the casing 8 so that the two-way flow flows each set of flow passages and the pressure fluid always flows only on the recessed surface side of the rotary blades 5. (B) The rotating blades 5 is made to be opened on the side in which the pressure fluid is received by the recessed surface, and to be closed on the opposite side. Wind or river water flow is led to the wind mill/water turbine with the vertical axis for power generation in which the two-way flow of sea water by the wave force is led, or only the out-going flow is present.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical axis wind turbine having a rotary shaft perpendicular to the flow direction of a fluid so that the fluid can be efficiently rotated even in a reciprocating flow at a relatively low pressure and a low speed. The vertical axis wind turbine is used to generate electric power by using the reciprocating motion of seawater as an energy source due to wave power.
The present invention relates to a wave power generation device.

[0002]

2. Description of the Related Art An axial flow type wind turbine having a rotating shaft in the same direction as the flow direction of a fluid is wells turbine or the like as a wind turbine rotating in one direction with respect to a reciprocating flow.
No application is known for these streams. On the other hand, a wind turbine with a rotating shaft perpendicular to the flow direction of the fluid originally rotates in one direction regardless of the direction of flow. It is also possible to use. But if you do
These cannot obtain rotational energy beyond the total resistance difference due to the curved surface shape of the rotor blade group with respect to the fluid flow direction. From such a background, in the conventional wave power generation device, an axial flow type wind turbine such as a propeller type is exclusively used,
When not using a one-way wind turbine, there is also a method in which the air flow is rectified in one direction by a valve mechanism and then the wind turbine is rotated, but it has not been economically superior and has not yet been widely used. .

[0003]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned drawbacks of a wind turbine having a rotating shaft in a direction perpendicular to the direction of fluid flow, and improves energy conversion efficiency as compared with a conventional structure. It is an object of the present invention to provide a vertical axis wind turbine, which is characterized by the above, and a wave power generation device using the same.

[0004]

In order to achieve the above object, a vertical axis wind turbine of claim 1 has a curved surface around the rotary shaft 6 or an inner cylinder 7 integrated with the rotary shaft 6 in a direction perpendicular to the rotary shaft 6 and the inner cylinder 7. Alternatively, in a wind turbine having a plurality of rotary blades 5 that are concave due to slopes, a vertical plane that bisects the casing 8 into left and right is used as a symmetry plane, and the first flow path 1 and the third flow path 1 The flow path 3 is provided, and the second flow path 2 and the fourth flow path 4 are provided on the opposite side, and means for opening the forward flow and means for opening the reverse flow are provided in the two sets of flow paths, respectively. A reciprocating flow is introduced into the first reciprocating flow pipe 9 provided with the first flow passage 1 and the second flow passage 2 or the both flow passages, and the outward flow is from the first flow passage 1 to the third flow passage 3. , The return flow is made to flow from the fourth flow passage to the second flow passage, so that the reciprocating flow is positively applied only to the concave surface side of the rotor blade 5 and the flow on the convex surface side It is characterized in that to reduce the resistance.

The vertical-axis wind turbine of claim 2 is a further improvement of the above-mentioned wind turbine, in which the rotor blade 5 has a predetermined angle with the outer peripheral surface of the inner cylinder 7 only on the side where the concave surface thereof receives the fluid flow. The rotary shaft 6 is opened on the opposite side and closed on the opposite side, and the rotary shaft 6 is always eccentric to the closed side of the rotary blade 5 with respect to the center of the casing 8 in response to the alternating of the forward flow and the backward flow.
Is supported by a rotary shaft support 20 swinging around a support shaft 19, so that the fluid resistance on the convex side of the rotary blade 5 is minimized.

Three kinds of reciprocating flows of seawater, liquid other than seawater, or air can be obtained by using wave force as a driving force.
Among them, a power generator using a reciprocating flow of a liquid other than seawater has already been applied for in Japanese Patent Application No. 2000-153871, and the vertical axis wind turbine of claim 1 or 2 can be applied to the power generator according to the application. . On the other hand, claim 3
The wave power utilizing power generator described above uses the vertical axis wind turbine of claim 1 or 2, and directly in the first flow path 1 and the second flow path 2 or in the first reciprocating flow pipe 9 or via the wave collecting chamber 25. Then, the reciprocating flow of seawater is introduced to connect the third flow path 3 and the fourth flow path 4 or the second reciprocating flow pipe 10 in which the both flow paths are assembled to the storage tank 16 provided outside them. It is characterized in that it is configured to generate electricity.

The wave power utilizing power generator according to claim 4 uses the vertical axis wind turbine of claim 1 or 2, and uses the first flow path 1 and the second flow path.
A reciprocating flow of air obtained by utilizing wave force is introduced into the flow passage 2 or the first reciprocating flow pipe 9, and the third flow passage 3 and the fourth flow passage 4 are communicated with the outside air to generate electricity. It is characterized by having done.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a sectional view of an embodiment of a vertical axis wind turbine according to claim 1 as seen from above. First, the rotary shaft 6 is provided,
A plurality of rotary blades 5 having a concave shape formed by a curved surface or a slanted surface in a direction perpendicular to that are joined to each other via an inner cylinder 7, and a vertical surface that bisects these to the left and right is a symmetric surface, and a rotary shaft 6 is provided on one side. The first flow path 1 and the third flow path 3 are provided in the direction perpendicular to the above, and the second flow path 2 and the fourth flow path 4 are provided on the opposite side. A reciprocating flow of seawater, a fluid other than seawater, or air, which is driven by wave force or the like, is supplied from the first reciprocating flow pipe 9 to the first flow path 1 and the second flow path 1.
A valve body 11 is provided in the first flow path 1 that is guided to the flow path 2 and opens in response to an outward flow generated when the internal pressure of the flow path 2 is in a pressurized state.
A valve body 12 is provided in the second flow path 2 to open the return flow generated when the internal pressure is reduced. Further, a valve body 13 that opens to the forward flow is provided in the third flow path 3, and a valve body 14 that opens to the return flow is provided in the fourth flow path 4, and these are provided outside the both flow paths. A second reciprocating flow pipe 10 is provided. However,
The first reciprocating flow pipe 9 and the second reciprocating flow pipe 10 can be omitted by having their functions also as the wave collecting chamber 25, the storage tank 16 or the air chamber 28 described later. The outer surfaces of the rotor blade 5 and the inner cylinder 7 are separate casings 8 from them.
And the above-mentioned four flow paths are joined to each of them.
In the vertical axis wind turbine configured as above, the outward flow is from the first flow path 1 to the third flow path 3, and the return flow is from the fourth flow path 4 to the second flow path 2.
Since the fluid is pumped to only the concave direction of the rotary blade 5 in any case, the fluid resistance on the convex surface side can be significantly reduced and the rotational energy can be efficiently extracted. The inner cylinder 7 is a portion in which the rotary shaft 6 is enlarged, and has a function of connecting the rotary blade 5 and the rotary shaft 6 and bringing the flow passage in the wind turbine into the vicinity of the outer periphery to efficiently rotate the rotary blade 5. And has a hollow body in this embodiment. However, the inner cylinder 7 may not be provided, and the rotary blade 5 may be directly connected to the rotary shaft 6. In addition, each valve body 11, 12, 13, 1
4 has a ring-shaped valve seat 15 arranged in a pair,
It has a function of opening and closing each of the flow paths 1, 2, 3, and 4 in cooperation with each valve body. However, various other forms of these opening / closing means are conceivable. For example, the opening / closing means may be an electromagnetic valve that opens / closes by sensing the flow direction of the fluid, and as shown in FIG. When flowing, the second flow path 2 is closed by fluid pressure, the valve body 13 is pushed open by the fluid pressure from the third flow path 3 and closes the fourth flow path 4, and when returning, they are on opposite sides. It is also possible to use a switching valve that operates, and the present invention does not depend on the means.

FIG. 2 is a cross-sectional view of a vertical axis wind turbine according to a second embodiment of the present invention when viewed from the upper side near the center of height. Figure 2
In the same manner as the above-mentioned embodiment of claim 1, four channels of the first channel 1 to the fourth channel 4 are provided around the casing 8.
Valve bodies 11, 12, and 1 are provided inside them as flow path opening / closing means.
3, 14 are provided, and the outward flow is from the first flow path 1 to the third flow path 3,
The return flow is made to flow from the fourth flow path 4 to the second flow path 2.
Further, a plurality of rotary blades 5 having a concave shape by a curved surface or an inclined surface is provided around the rotary shaft 6 at a right angle to the rotary shaft 6, and an exploded view 3 of the mounting portion of the rotary blades 5 to the inner cylinder 7 and XX.
As shown in the sectional view 4, the bearings 5-1 and 5-2 are provided on the lower portion thereof.
The rotary blade 5 is rotatably connected to the side plates 7-1 and 7-2 of the inner cylinder 7 by the small shaft 17. And the small axis 1
7 is attached at a predetermined height from the outer peripheral surface of the inner cylinder 7, and the lower portion of the rotor blade 5 is protruded from the bearings 5-1 and 5-2 by a predetermined dimension. Therefore, the rotor blade 5 has a predetermined angle. When opened, the protruding portion hits the inner cylinder and cannot be opened further. There are various other possible means for preventing the rotary blade 5 from opening beyond a predetermined angle. For example, as shown in FIG.
An axial groove 21 is provided on the lower surface of the rotor blade 5 at a predetermined angle.
It is also possible to make contact with the side surface of 1. The present invention is not concerned with the means. Rotor blade 5 having such a structure
Is automatically opened to a predetermined angle with respect to the inner cylinder 7 when the flow of the fluid hits the concave side, and the convex side is automatically closed by the fluid on the opposite side, but a spring means is provided below the rotary blade 5. The closing operation may be assisted by providing it.

Details of the upper end of the rotary shaft 6 As shown in FIG.
Both ends of the rotary shaft 6 are connected to the rotary shaft support 20 via the bearings 6-1.
It is rotatably supported by, and the outer end of the rotary shaft support 20 is connected to the casing 8 via a support shaft 19 as shown in FIG. Further, elongated holes 18 are provided on both upper and lower sides of the casing 8, and the rotary shaft 6 can be swung along the elongated holes 18 about a support shaft 19 as shown by an imaginary line. . It is preferable that the support shaft 19 is not placed on the center line of the casing 8 but at a position deviated to the side of the fourth flow passage 4 or the first flow passage 1. This is because the rotor blades 5 are opened near the outflow side (the third flow path 3 in the forward flow and the second flow path 2 in the return flow), and a larger space is required than in the inflow side. As shown in FIG. 6, the long hole 18 has the rotating shaft 6
It is closed from the inside by a sliding plate 22 that penetrates through, and the elastic sheet 2 is provided between the peripheral edge of the sliding plate 22 and the casing 8.
It is wrapped with 3 to prevent leakage of internal fluid. The upper end of the rotary shaft 6 is connected to the generator via a universal joint 24.

When the fluid is a liquid, in order to avoid the leakage prevention mechanism around the elongated hole 18, a rotary shaft support 20 is provided inside the water turbine as shown in FIG. It is also possible to enclose air in the casing 8-1 to form an air chamber so that the generator 35 installed on the rotary shaft support 20 swings in the air chamber. By doing so, only the loosened electric wiring 36 needs to be taken out to the outside of the water turbine, so that fluid leakage from this portion can be easily prevented. The vertical axis wind turbine configured as described above creates a space in the casing 8 only on the side where the fluid flow hits the concave surface of the rotary blade 5 according to the alternation of the reciprocating flow, and allows the rotary blade 5 to be fully opened. On the other side, the fluid pressure provides a space for pushing the inner cylinder 7 and allowing the closed rotary shaft 6 to pass therethrough. Therefore, the fluid resistance on the convex side of the rotor blade 5 is minimized, and the reciprocating flow rotates very efficiently. You can extract energy. Since the inside of the inner cylinder 7 is a hollow body, when the fluid is seawater or a liquid other than seawater, a large buoyancy acts on the inner cylinder 7 and the rotary shaft support 2
The burden on 0 can be reduced. A perspective view of this embodiment is shown in FIG.

FIG. 9 shows an example in which a wave power utilizing power generator having the structure described in claim 3 is installed on a shore, and FIG. 10 is a sectional view taken along the line YY of FIG. However, the levee is not shown in FIG. It is preferable to install the device on a rock wall where the seabed rock slopes toward the shore and the left and right sides are V-shaped on an appropriate scale, and the bottom plate, side wall and ceiling wall made of concrete or steel plate, etc. A collection chamber 25 consisting of is installed on the sea side of the embankment. And in the center of the wave collection room 25
The reciprocating flow pipe 9 is connected, and further connected to the vertical axis wind turbine of claim 1 or 2, and the second reciprocating flow pipe 10 is connected to the storage tank 16. Because of this, as the water level in the collection chamber 25 fluctuates, the water level in the storage tank 16 naturally tries to follow it, and the outflow and the return flow alternately occur, during which a large amount of seawater is generated by the vertical axis wind turbine. It can be rotated strongly with.

FIG. 11 is a cross-sectional view of an embodiment of a wave power utilizing power generator using an air flow mounted on a traffic sign buoy, which is characterized by the structure described in claim 4. A cylinder 27 is connected to the lower center of the buoy body 26, and a stabilizer 30 and a mooring line 34 are provided below the buoy body 26 via a connecting rod 29. Also, the cylinder 2
The vertical axis wind turbine of claim 1 or 2 is installed on the upper part of 7,
The third flow path 3 and the fourth flow path communicate with the outside air via a ventilation hole 33 provided in the upper portion of the tower 32. In this case, the water turbine may be installed horizontally (the rotating shaft 6 is in the vertical direction), but in this example it is installed vertically. In this way, the buoy body 26 also tries to rise or fall according to the wave motion,
The air chamber 28 above the cylinder 27 is pressurized or depressurized by the resistance caused by the stabilizer 30 and the mooring line 34, and the air flow is changed from the first flow path 1 to the third flow path 3 or from the fourth flow path 4 to the third flow path 4. The vertical axis wind turbine is driven while flowing to the two flow paths 2 to generate electricity. A battery 31 and control devices are built in the buoy body 26, and the generated electric energy can be accumulated and controlled by these to operate the marker lamp and other electric devices.

[0015]

Since the vertical axis wind turbine and the power generator using wave power according to the present invention are configured as described above,
It has the effects described below.

In the vertical axis wind turbine of the first aspect, a reciprocating flow driven by wave force or the like is positively applied only to the concave side of the rotor blade 5, and only the fluid retained in the wind turbine contacts the convex side. Therefore, the fluid resistance on the convex surface side can be reduced as compared with the conventional structure, and the energy conversion efficiency can be greatly improved.

According to the vertical axis wind turbine of the second aspect, not only the rotor blade 5 is closed on the side not receiving the fluid flow,
The rotating shaft 6 is always eccentric with respect to the center of the casing 8 toward the side where the rotary blades 5 are closed in accordance with the alternating of the forward flow and the backward flow. Therefore, the fluid resistance on the convex side of the rotary blades 5 is significantly reduced, and Can be prevented from escaping from the gap between the casing 8 and the rotary blades 5, and the rotational energy can be extracted from the reciprocating flow very efficiently. The wind turbine of this structure is particularly effective for low pressure and low speed liquids.

Since the wave power generation device according to claim 3 directly introduces seawater into the vertical shaft water turbine, it can be a device having a simpler structure as compared with a device for converting into a reciprocating flow of another liquid. it can. Although it is difficult to pressurize the reciprocating fluid remarkably with this device, when the wave collecting chamber 25 is provided, it is achieved to some extent by the action thereof.

The wave power utilizing power generator according to the fourth aspect can efficiently generate power with a relatively low pressure air flow as compared with the case of using a conventional axial flow type wind turbine.

[Brief description of drawings]

1 is a sectional view showing a vertical axis wind turbine of claim 1;

FIG. 2 is a sectional view showing the vertical axis wind turbine of claim 2;

FIG. 3 is a detailed view of a first example of a lower portion of the rotary blade 5 of the vertical axis wind turbine of claim 2;

FIG. 4 is a sectional view taken along line XX-X of FIG.

FIG. 5 is a detailed view of a second example of the lower part of the rotary blade 5 of the vertical axis wind turbine of claim 2;

FIG. 6 is a detailed view of the vicinity of a rotary shaft bearing 6-1 of the vertical shaft wind turbine of claim 2;

FIG. 7 is a cross-sectional view showing an example in which a vertical casing wind turbine of claim 2 is provided with a child casing 8-1 so that the generator 35 can swing inside the turbine.

FIG. 8 is a cross-sectional view showing an example in which a valve mechanism is a switching valve,

FIG. 9 is a perspective view showing an embodiment of the wave power utilizing power generator according to claim 3;

10 is a cross-sectional view taken along the line YY of FIG.

FIG. 11 is a cross-sectional view showing an embodiment of the wave power utilizing power generator according to claim 4;

[Explanation of symbols]

1st flow path 2 Second channel 3rd flow path 4th flow path 5 rotors 5-1 Bearing 5-2 Bearing 6 rotation axes 6-1 Bearing 7 Inner cylinder 7-1 Side plate 7-2 Side plate 8 casing 8-1 Child casing 9 First reciprocating flow tube 10 Second reciprocating flow tube 11 valve body 12 valve bodies 13 valve 14 valve body 15 seat 16 storage 17 small axis 18 slots 19 Support shaft 20 Rotating shaft support 21 groove 22 sliding plate 23 Elastic sheet 24 Universal 25 Wave collection room 26 buoy body 27 cylinders 28 air chambers 29 connecting rod 30 stabilizer 31 battery 32 tower 33 Vent 34 mooring lines 35 generator 36 Electric wiring

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[Procedure amendment]

[Submission date] March 15, 2002 (2002.3.1)
5)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Title: Vertical axis wind turbine, wave power generator and wind power generator

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a rotating shaft perpendicular to the direction of fluid flow (in the present invention, the vertical axis of a wind turbine means this, and the rotating shaft is installed vertically). However, the vertical axis wind turbine is provided with a casing, and the wave power is characterized by using the vertical axis wind turbine. The present invention relates to a power generator and a wind power generator. The vertical axis wind turbine can also be used in a hydroelectric power generation device using a river flow.

[0002]

2. Description of the Related Art A wind turbine having an axis of rotation perpendicular to the direction of fluid flow has the characteristic of operating in all directions, rotating in one direction, and being highly efficient for low speed flows. However, there is a drawback in that the resistance on the convex side of the rotary blade increases as the speed increases, especially in the case of a liquid flow. On the other hand, it is known to cover the convex side of a vertical axis wind turbine that does not have a casing with a shielding plate, but there is known a technique in which a casing and a wind turbine having a flow passage fixed to the casing are specialized for reciprocating flow. Absent. From such a background, in the conventional wave power generation device, a propeller type such as a Wells turbine that rotates in one direction with respect to a reciprocating flow is used, and if a one-way wind turbine is not used, the air flow is unidirectional by a valve mechanism. There is also a method of rotating an axial flow wind turbine after rectifying it,
It is not yet economical enough to be widely put into practical use.
Further, although a propeller-type wind turbine is exclusively used for a wind turbine generator, there is a drawback in that the larger the size, the higher the pillars of the propeller must be made, which results in an increase in the cost of the device and an increase in maintenance difficulty.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks of a wind turbine having a rotating shaft perpendicular to the direction of fluid flow and reduces the resistance on the convex side of the rotor blade. An object of the present invention is to provide a vertical-axis wind turbine equipped with a casing, which has improved energy conversion efficiency, and a wave power generation device and a wind power generation device using the same.

[0004]

In order to achieve the above object, the vertical axis wind turbine of claim 1 is provided with a casing 8 to deprive it of the property of operating in all directions of flow.
By arranging four flow paths and opening / closing means again,
It is designed to operate only in two-direction flow and to reduce the resistance on the convex side of the rotor blade 5. That is, the rotary body 30 is provided around the rotary shaft 6 or the inner cylinder 7 integrated with the rotary shaft 6, and a plurality of rotary blades 5 each having a concave shape due to a curved surface or an inclined surface are arranged in a direction perpendicular to the axis, and a casing 8 is provided around the rotary body 30. In the wind turbine, the first flow path 1 and the third flow path 3 are provided on one side of a vertical surface that bisects the casing 8 in the axial direction in a direction perpendicular to the axis, and the concave surface of the rotor blade 5 is directed toward the first flow path. A second flow path 2 and a fourth flow path 4 are provided on the opposite side, and an opening / closing means for opening the forward flow and an opening / closing means for opening the return flow are respectively provided in the two sets of the passages. The forward flow is made to flow from the first flow path 1 to the third flow path 3, and the return flow is made to flow from the fourth flow path to the second flow path, so that the reciprocating flow is positively applied only to the concave surface side of the rotor blade 5. The feature is that the fluid resistance on the convex side is reduced by pressing.

The vertical axis wind turbine of claim 2 is the same as that of claim 1 above.
The wind turbine is further improved so that the rotary blade 5 opens at a predetermined angle with respect to the outer peripheral surface of the inner cylinder 7 only on the side where the concave surface receives the fluid flow, and closes on the opposite side (hereinafter, " According to the feature of claim 2 (a)), the rotating shaft 6 is always eccentric with respect to the center of the casing 8 toward the side where the rotating blade 5 is closed according to the alternation of the forward flow and the returning flow. Is supported by a rotary shaft support 20 that swings at a predetermined angle around the support shaft 19, thereby minimizing the fluid resistance on the convex surface side of the rotary blade 5. The wind turbine can be put into practical use even if it has a structure in which all the opening / closing means is omitted.

The vertical axis wind turbine of claim 3 is adapted to utilize the vertical axis turbine of claim 2 for one-way flow, and the first flow path 1 is provided on one side of the casing 8 in the axial direction.
And only one set of the third and third flow paths 3 is provided, and further,
It has the characteristics of (a). The vertical axis wind turbine can be used for a micro hydraulic power generation device and a wind power generation device.

Three kinds of reciprocating flows of seawater, liquids other than seawater, or air can be obtained by using wave power as a driving force. Among them, as a power generation device utilizing reciprocating flows of liquids other than seawater, Japanese Patent Application No. 2000- The vertical axis wind turbine of claim 1 or claim 2, which has already been filed in 153871, can be used for the power generation device according to the application. Further, in order to perform power generation using the reciprocal flow of air, the above-mentioned wind turbine is also used as it is, and the reciprocal flow of air is introduced into the first flow path 1 and the second flow path 2, and the third flow path 3 and It suffices if the fourth flow path 4 is communicated with the outside air. On the other hand, the wave power generation device according to claim 4 uses the vertical axis wind turbine of claim 1 or 2, and introduces a reciprocating flow of seawater into the first flow path 1 and the second flow path 2. , Third flow path 3 and fourth flow path 4 or second reciprocating flow tube 1
It is characterized in that 0 is connected to a storage tank 16 provided outside them to generate electric power.

The wind turbine generator according to claim 5 has a rotating shaft 6
Using the vertical axis wind turbine of claim 3 or claim 3 (a), a rotary disk 28 is provided in the lower center of the casing 8, and means for constantly setting the inlet of the first flow path 1 in the wind direction is provided. It is characterized by that.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a sectional view in the direction perpendicular to the axis, showing an embodiment of the vertical axis wind turbine of claim 1. First, a rotary shaft 6 is provided, and a plurality of rotary blades 5 having a concave shape by a curved surface or an inclined surface in a direction perpendicular to the rotary shaft 6 are joined via an inner cylinder 7, and these are divided into two parts in the axial direction on one side from a vertical surface. The first flow path 1 and the third flow path 3 are provided in the direction perpendicular to the axis, and the second flow path 2 and the fourth flow path 4 are provided on the opposite side. A valve body 11 that guides a reciprocating flow of a fluid to a first reciprocating flow pipe 9 in which the first flow passage 1 and the second flow passage 2 are gathered and is opened with respect to the outward flow is provided in the first flow passage 1. A valve body 12 that opens to the flow is provided in the second flow path 2.
Furthermore, the valve body 13 that opens in the third flow path 3 with respect to the outward flow
In the fourth flow path 4, a valve body 14 that opens to the return flow is provided, and a second reciprocating flow pipe 10 that collects them is provided outside the both flow paths. However, the first reciprocating flow pipe 9 and the second reciprocating flow pipe 10 can be omitted by having their functions also as the wave collecting chamber 25 and the storage tank 16 described later. The outer sides of the rotor blade 5 and the inner cylinder 7 are covered with a casing 8 which is separate from the rotor blade 5 and the inner cylinder 7, and the four flow paths are joined to the casing 8. In the vertical axis wind turbine configured as described above, the outflow flows from the first flow path 1 to the third flow path 3, and the return flow flows from the fourth flow path 4 to the second flow path 2, and for whichever Since the fluid is always pumped only in the concave direction of the rotary blade 5, the fluid resistance on the convex side can be significantly reduced and the rotational energy can be efficiently extracted. In addition, the inner cylinder 7 is integrated with the rotary shaft, has a function of connecting the rotary blade 5 and the rotary shaft 6 and rotating the rotary blade 5 by bringing the flow passage in the wind turbine into the vicinity of the outer periphery. In the embodiment, it is a hollow body. However, the inner cylinder 7
It is also possible to directly connect the rotary blade 5 to the rotary shaft 6 without providing. Further, a valve seat 15 is arranged on each of the valve bodies 11, 12, 13, 14 and has a function of opening and closing each flow path in cooperation with each valve body. However, some other forms of these opening / closing means are conceivable, for example, a valve that senses the fluid flow direction and opens / closes hydraulically, or two valves as described later in the example of FIG. It can be a switching valve that functions in the body, and the present invention does not depend on the means.

FIG. 2 is a sectional view in the direction perpendicular to the axis, showing an embodiment of the vertical axis wind turbine of claim 2. In the figure, the first flow path 1 is provided around the casing 8 as in the case of the above-described first embodiment.
From the fourth flow path 4 to the fourth flow path 4, and an opening / closing means is provided inside them. The forward flow is from the first flow path 1 to the third flow path 3, and the return flow is from the fourth flow path 4 to the second flow path. It is made to flow to the flow path 2. However, in this example, there are only two valve bodies, the valve body 11 closes the second flow passage 2 by the fluid pressure in the forward flow, and the valve body 13 is pushed open by the fluid pressure from the third flow passage 3. The fourth flow path 4 is closed as a switching valve, which is operated on the opposite side when returning. Further, a plurality of rotary blades 5 having a concave shape by a curved surface or an inclined surface is provided around the rotary shaft 6 in the direction perpendicular to the axis, but as shown in FIGS. 3 and 4, bearings 5A and 5B are provided below the rotary blades 5. The rotary blade 5 is swingably connected to the side plates 7A and 7B of the inner cylinder 7 by a small shaft 17. The small shaft 17 is attached to the outer peripheral surface of the inner cylinder 7 at a predetermined height, and the lower portion of the rotor blade 5 is protruded from the bearings 5A and 5B by a predetermined dimension, so that the rotor blade 5 has a predetermined angle. When opened, the projecting portion abuts the inner cylinder and cannot be opened further. There are various other possible means for preventing the rotary blade 5 from opening beyond a predetermined angle. For example, as shown in FIG. 5, an axial groove 21 is provided in the inner cylinder 7 so that the lower portion of the rotary blade 5 is It is also possible to contact the side surface of the groove 21 at a predetermined angle, and the present invention is not limited to this means. The rotor blade 5 having such a structure automatically opens to a predetermined angle with respect to the inner cylinder 7 when the fluid is pumped to the concave surface side, and on the opposite side, the convex surface side is pushed by the fluid and automatically closes. A spring or the like may be provided in the lower part of the rotary blade 5, or the axial groove 21 may be used as an elastic body to assist the closing operation or to reduce the impact when opening.

In this structure, the method of supporting the swinging rotary shaft 6 is one of the main points, but in this example, as shown in FIG. 6, both ends of the rotary shaft 6 are supported by the rotary shaft support 20 via bearings 6A. It is rotatably supported, and the outer end of the rotary shaft support 20 is connected to the casing 8 via the support shaft 19 as shown in FIG. Further, elongated holes 18 are provided on both sides of the casing 8 in the axial direction, and the rotary shaft 6 has the elongated holes 1
8, the support shaft 19 can be swung at a predetermined angle as indicated by an imaginary line. This support shaft 19
Is not placed on the center line of the casing 8 but the fourth flow path 4
Alternatively, it may be placed at a position deviated to the first flow path 1 side. This is the outflow side (third flow path 3 in the forward flow, second flow path 2 in the return flow)
This is because the rotary blades 5 are opened in the vicinity and require a larger space than the inflow side. The long hole 18 is, as shown in FIG.
It is closed from the inside by a sliding plate 22 penetrating the rotary shaft 6, and an elastic sheet 23 is wrapped between the peripheral edge of the sliding plate 22 and the casing 8 to prevent leakage of internal fluid. The upper end of the rotary shaft 6 is connected to the generator via a universal joint 24.

When the apparatus is vertical and the fluid is liquid, in order to avoid the leakage prevention mechanism around the elongated hole 18, a rotary shaft support 20 is provided inside the turbine as shown in FIG. Alternatively, air can be enclosed in the child casing 8C provided therein to form an air chamber, and the generator 26 installed on the rotary shaft support 20 can be swung in the air chamber. In this way, only the loosened electric wiring 27 needs to be taken out of the water turbine, so that leakage of fluid from this portion can be easily prevented. The vertical axis wind turbine configured as described above has the rotor blades 5 corresponding to the alternating reciprocating flow.
The space inside the casing 8 is made only on the side where the fluid flows into the concave surface of the above, and the rotary blade 5 is fully opened, and on the opposite side, the fluid pressure also pushes the inner cylinder 7 to pass the closed rotary blade 5. Therefore, it is possible to minimize the fluid resistance on the convex surface side of the rotary blade 5 and extract the rotational energy from the reciprocating flow very efficiently. Even if the structure in which the opening / closing means is all removed from the structure, the efficiency is lowered, but it is clear that the structure is far more efficient than the conventional structure in which the rotary blade 5 does not open and close. Since the inside of the inner cylinder 7 is a hollow body, when the fluid is a liquid, a large buoyancy acts on the inner cylinder 7 and the load on the rotary shaft support 20 can be reduced. An external perspective view of this embodiment is shown in FIG.

FIG. 8 is a cross-sectional view showing an embodiment in which the vertical axis wind turbine of claim 3 is used for micro hydraulic power generation. As shown in the drawing, one set of flow paths is provided near the axially lower side surface of the casing 8 so that the water flow flows from the first flow path 1 to the third flow path 3 in a gentle S-shape. The rotating body 30 having the characteristics of b) is provided. The vertical axis wind turbine has a rotating shaft 6
It is also possible to make the vertical direction, but if it is made horizontal as in this example, the width of the rotary blade 5 can be easily increased, and energy can be absorbed from a large amount of fluid. Suitable for equipment and wind power generators. An example in which the wind turbine is used in a wind turbine generator is shown in FIG.
It will be described later in 4.

FIG. 9 shows an embodiment in which the wave power generation device of claim 4 is installed on the coast, and FIG. 10 is a sectional view taken along the line ZZ of FIG. However, the levee is not shown in FIG.
It is preferable that the device is installed on a V-shaped shore where the waves are active and the right and left sides are of a suitable scale. Furthermore, a wave collection chamber 25 consisting of concrete or steel bottom plate, side wall, ceiling wall, etc. is installed on the sea side of the embankment. It is provided. The vertical shaft wind turbine of claim 3 is installed on the bank side of which the rotating shaft 6 having a sufficient length is horizontal, and the first reciprocating flow pipe 9 is connected to the rear wall of the wave collecting chamber 25.
The second reciprocating flow pipe 10 is connected to the storage tank 16. Thus, as the water level in the collection chamber 25 fluctuates due to the vibration, the water level in the storage tank 16 naturally tries to follow it, and the outflow and the backflow alternately occur, whereby the embodiment of claim 3 is realized. The vertical-axis wind turbine works in the same way as described above, and can be powerfully rotated by a large amount of seawater. In this example, as shown by the phantom line, it is affected by the water level fluctuation due to the tide, but if the wave power generation device is installed on a floating body, the effect of the tide can be avoided. That is, if the floating body is made huge or a horizontal resistance plate is attached, it is possible to reduce the fluctuation of the device due to waves, and to follow the water level fluctuation due to the tide, so that the entire device is always kept at the optimum position with respect to the sea surface. be able to.

FIG. 11 shows an embodiment of the wave power generator of claim 4 which employs the vertical axis wind turbine of claim 2 in which the rotary shaft 6 is in the vertical direction. In this example, the child casing 8C is provided on the upper portion of the water turbine, and as shown in FIG.
6 rocks.

FIG. 12 is a perspective view showing an embodiment of the wind turbine generator of claim 5 using the vertical axis wind turbine of claim 3 (a),
FIG. 13 is a sectional view taken along line ZZ of FIG. As shown in the figure, the rotating shaft 6 is in the horizontal direction, the first flow path 1 and the third flow path 3 are close to the lower side of the casing 8, and both flow paths expand in cross section toward the outside. The wind that has flowed in from the first flow path is compressed, rotates the rotor blades 5, and flows out to the third flow path. In addition to the turntable 28 at the lower center of the casing 8, vertical vanes 29 are provided at the left and right ends in this example as means for keeping the inlet of the first flow path 1 always in the wind direction. It is also possible to use a method in which the oil is sensed to rotate with hydraulic pressure, and the present invention is not concerned with the means. In such a wind power generator, since the width of the rotor blades 5 can be increased and a large amount of wind can be used, the height of the device can be suppressed even if the size is increased.

FIG. 14 is a sectional view showing an embodiment of the wind turbine generator of claim 5 using the vertical axis wind turbine of claim 3. The perspective view of this example is similar to that of FIG. This device operates in the same manner as in the case of using the vertical axis wind turbine of claim 3 (a), but as shown in the figure, the rotor 30 has the characteristics of claim 2 (a), so The lower side opens with its own weight, receives the wind pressure there to rotate the rotating body 30, and then closes with its own weight and wind pressure on the upper side. In this way, the resistance on the convex surface side of the rotary blade 5 is significantly reduced, so that further improvement in efficiency can be expected. However, since this device is not suitable for high-speed rotation, it is preferable that the rotating body 30 has a relatively large diameter.

[0019]

Since the vertical axis wind turbine, the wave power generation device and the wind power generation device according to the present invention are configured as described above, they have the following effects.

In the vertical axis wind turbine of claim 1, a reciprocating flow driven by wave power or the like is positively applied only to the concave side of the rotor blade 5 in the chamber surrounded by the casing 8, and the casing 8 is applied to the convex side. Since only the fluid retained inside is in contact, the fluid resistance on the convex surface side can be reduced and the energy conversion efficiency can be greatly improved as compared with the conventional structure.

In the vertical axis wind turbine of the second aspect, not only the rotor blade 5 is closed on the side where the fluid flow is not received, but also the rotating shaft 6 is rotated by the center line of the casing 8 in accordance with the alternating of the forward flow and the backward flow. On the other hand, since the rotor blade 5 is always eccentric to the closed side, the amount of fluid that escapes from the gap between the casing 8 and the rotor blade 5 is reduced while significantly reducing the fluid resistance on the convex side of the rotor blade 5. Rotational energy can be efficiently extracted from the reciprocating flow. The wind turbine of this structure is particularly effective for low pressure and low speed liquids.

According to the vertical axis wind turbine of claim 3, the vertical axis wind turbine of claim 2 can be used for unidirectional flow.
The structure in which the convex side of the rotor blade 5 is closed can be used in a micro hydraulic power generation device, a wind power generation device, or the like to improve the efficiency as compared with the conventional structure.

Since the wave power generation device of claim 4 directly introduces seawater into the vertical axis wind turbine of any one of claims 1 and 2, as compared with a device for converting into a reciprocating flow of another liquid. The device can have a simple structure. This device can be either a vertical type or a horizontal type, but particularly in the horizontal type, it is relatively easy to increase the size by increasing the length of the rotary blade 5.

Since the wind turbine generator of claim 5 can be made larger by increasing the width regardless of the height of the device,
The device cost can be suppressed and maintenance can be facilitated.

[Brief description of drawings]

1 is a sectional view showing an embodiment of a vertical axis wind turbine of claim 1;

FIG. 2 is a sectional view showing an embodiment of the vertical axis wind turbine of claim 2;

FIG. 3 is a detailed view of a first example of a lower portion of the rotary blade 5 of the vertical axis wind turbine of claim 2;

FIG. 4 is a sectional view taken along line XX-X of FIG.

FIG. 5 is a detailed view of a second example of the lower part of the rotary blade 5 of the vertical axis wind turbine of claim 2;

FIG. 6 is a detailed view of the vicinity of the rotary shaft bearing 6A of the vertical axis wind turbine of claim 2;

FIG. 7 is a cross-sectional view showing an example in which a vertical casing wind turbine of claim 2 is provided with a child casing 8C so that the generator 26 can be swung in an empty chamber inside the turbine.

FIG. 8 is a cross-sectional view showing an embodiment in which the vertical axis wind turbine of claim 3 is used in a micro hydraulic power generation device,

FIG. 9 is a perspective view showing an embodiment in which the wave power generation device according to claim 4 is horizontal.

10 is a cross-sectional view taken along the line YY of FIG.

FIG. 11 is a perspective view showing an embodiment in which the wave power generation device according to claim 4 is made vertical;

FIG. 12 is a perspective view showing an embodiment of the wind turbine generator of claim 5 using the vertical axis wind turbine of claim 3 (a),

13 is a cross-sectional view taken along line ZZ of FIG.

FIG. 14 is a sectional view showing an embodiment of the wind turbine generator of claim 5 using the vertical axis wind turbine of claim 3.

[Explanation of symbols] 1st flow path 2 Second channel 3rd flow path 4th flow path 5 rotors 5A bearing 5B bearing 6 rotation axes 6A bearing 7 Inner cylinder 7A side plate 7B side plate 8 casing 8C child casing 9 First reciprocating flow tube 10 Second reciprocating flow tube 11 valve body 12 valve bodies 13 valve 14 valve body 15 seat 16 storage 17 small axis 18 slots 19 Support shaft 20 Rotating shaft support 21 groove 22 sliding plate 23 Elastic sheet 24 Universal 25 Wave collection room 26 generator 27 Electric wiring 28 turntable 29 vertical wings 30 rotating body

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 5]

[Figure 6]

[Figure 7]

[Figure 10]

[Figure 8]

[Figure 9]

FIG. 11

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[Fig. 13]

FIG. 14

[Procedure amendment]

[Submission date] September 11, 2002 (2002.9.1)
1)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Title: Vertical axis wind turbine, wave power generator and wind power generator

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a rotating shaft perpendicular to the direction of fluid flow (in the present invention, the vertical axis of a wind turbine means this, and the rotating shaft is installed vertically). However, the vertical axis wind turbine is provided with a casing, and the wave power is characterized by using the vertical axis wind turbine. The present invention relates to a power generator and a wind power generator. Further, the vertical axis wind turbine can also be used for a micro hydroelectric power generation device using a river flow.

[0002]

2. Description of the Related Art A wind turbine having an axis of rotation perpendicular to the direction of fluid flow has the characteristic of operating in all directions, rotating in one direction, and being highly efficient for low speed flows. However, there is a drawback in that the resistance on the convex side of the rotary blade increases as the speed increases, and in particular, in the case of a liquid flow, it increases. On the other hand, it is known to cover the convex side of a vertical axis wind turbine that does not have a casing with a shielding plate, but there is known a technique in which a casing and a wind turbine having a flow passage fixed to the casing are specialized for reciprocating flow. Absent. From such a background, in the conventional wave power generation device, a propeller type such as a Wells turbine that rotates in one direction with respect to a reciprocating flow is used, and if a one-way wind turbine is not used, the air flow is unidirectional by a valve mechanism. Although a method of rotating an axial-flow wind turbine after rectifying it is also used, it is not yet economical enough to be widely used. Further, although a propeller-type wind turbine is exclusively used for a wind turbine generator, there is a drawback in that the larger the size, the higher the pillars of the propeller must be made, which results in an increase in the cost of the device and an increase in maintenance difficulty.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks of a wind turbine having a rotating shaft perpendicular to the direction of fluid flow and reduces the resistance on the convex side of the rotor blade. An object of the present invention is to provide a vertical-axis wind turbine equipped with a casing, which has improved energy conversion efficiency, and a wave power generation device and a wind power generation device using the same.

[0004]

In order to achieve the above object, the vertical axis wind turbine of claim 1 is provided with a casing 8 to deprive it of the property of operating in all directions of flow.
By arranging four flow paths and opening / closing means again,
It is designed to operate only in two-direction flow and to reduce the resistance on the convex side of the rotor blade 5. That is, the rotary body 20 is provided around the rotary shaft 6 or the inner cylinder 7 integrated with the rotary shaft 6, in which a plurality of rotary blades 5 each having a concave shape due to a curved surface or an inclined surface is arranged in a direction perpendicular to the axis, and a casing 8 is provided around the rotary body 20. In the wind turbine, the first flow path 1 and the third flow path 3 are provided on one side of a vertical surface that bisects the casing 8 in the axial direction in a direction perpendicular to the axis, and the concave surface of the rotor blade 5 is directed toward the first flow path. A second flow path 2 and a fourth flow path 4 are provided on the opposite side, and an opening / closing means for opening the forward flow and an opening / closing means for opening the return flow are respectively provided in the two sets of the passages. The forward flow is made to flow from the first flow path 1 to the third flow path 3, and the return flow is made to flow from the fourth flow path to the second flow path, so that the reciprocating flow is positively applied only to the concave surface side of the rotor blade 5. It is characterized in that the convex surface faces only the staying fluid and the fluid resistance is reduced.

The vertical axis wind turbine of claim 2 is the same as that of claim 1 above.
The wind turbine is further improved so that the rotary blade 5 can be opened at a predetermined angle with respect to the outer peripheral surface of the inner cylinder 7 on the side where the concave surface receives the fluid flow, and can be closed on the opposite side. , "The characteristics of claim 2 (a)", the casing 8A between the first flow path 1 and the second flow path 2 has a gap between the first flow path 1 and the second flow path 2 which is minimized so as to minimize the fluid flow therebetween. It is assumed that the blades 1 and 2 are smoothly reduced toward the side of the first flow path 1, and the same is true for the fourth flow path 4 and the third flow path 3 side with respect to these and the rotation axis 6 as a base axis. The feature is that the fluid resistance on the convex side is remarkably reduced.

A vertical axis wind turbine of claim 3 is adapted to utilize the vertical axis wind turbine of claim 2 for unidirectional flow, and the first vertical axis turbine is provided on one side surface of the casing 8 in a direction perpendicular to the axis.
Only one set of the flow passage 1 and the third flow passage 3 is provided, and further, the feature of claim 2 is provided, and the valve mechanism is not required.

The vertical axis wind turbine of claim 4 is a vertical axis wind turbine of claim 3, wherein the rotary shaft 6 is horizontal and the rotary blades 5 are opened above the rotary shaft 6. The feature is that buoyancy is given by providing a cavity near the tip.

Three kinds of reciprocating flows of seawater, liquids other than seawater, or air can be obtained by using wave power as a driving force. Among them, as a power generation device using the reciprocating flow of liquids other than seawater, Japanese Patent Application No. 2000- The vertical axis wind turbine of claim 1 or claim 2, which has already been filed in 153871, can be used for the power generation device according to the application. Further, in order to perform power generation using the reciprocal flow of air, the above-mentioned wind turbine is also used as it is, and the reciprocal flow of air is introduced into the first flow path 1 and the second flow path 2, and the third flow path 3 and It suffices if the fourth flow path 4 is communicated with the outside air. On the other hand, the wave power generator according to claim 5 uses the vertical axis wind turbine of claim 1 or 2, and introduces a reciprocal flow of seawater into the first flow passage 1 and the second flow passage 2. , Third flow path 3 and fourth flow path 4 or second reciprocating flow tube 1
It is characterized in that 0 is connected to a storage tank 16 provided outside them to generate electric power.

The wind turbine generator according to claim 6 has a rotating shaft 6
Is used as a horizontal direction, and a vertical axis wind turbine having the characteristics of claim 3 or claim 3 (a) is used, and a rotating plate 22 is provided at the lower center of the casing 8 or a deflecting plate 24 is provided at the inlet of the first flow path 1. It is characterized in that means for always making the inlet of the first flow path 1 in the wind direction is provided.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a sectional view in the direction perpendicular to the axis, showing an embodiment of the vertical axis wind turbine of claim 1. First, a rotary shaft 6 is provided, and a plurality of rotary blades 5 having a concave shape by a curved surface or an inclined surface in a direction perpendicular to the rotary shaft 6 are joined via an inner cylinder 7, and these are divided into two parts in the axial direction on one side from a vertical surface. The first flow path 1 and the third flow path 3 are provided in the direction perpendicular to the axis, and the second flow path 2 and the fourth flow path 4 are provided on the opposite side. A valve body 11 that guides a reciprocating flow of a fluid to a first reciprocating flow pipe 9 in which the first flow passage 1 and the second flow passage 2 are gathered and is opened with respect to the outward flow is provided in the first flow passage 1. A valve body 12 that opens to the flow is provided in the second flow path 2.
Furthermore, the valve body 13 that opens in the third flow path 3 with respect to the outward flow
In the fourth flow path 4, a valve body 14 that opens to the return flow is provided, and a second reciprocating flow pipe 10 that collects them is provided outside the both flow paths. However, the first reciprocating flow pipe 9 and the second reciprocating flow pipe 10 are not essential elements, and may be omitted depending on their bonding environment. The outer side of the rotary body 20 including the rotary blades 5, the rotary shaft 6 and the inner cylinder 7 is covered with a casing 8 to which the above-mentioned four flow paths are respectively joined. In the vertical axis wind turbine configured as described above, the forward flow flows from the first flow path 1 to the third flow path 3 and the reverse flow flows from the fourth flow path 4 to the second flow path 2, for whichever Since the fluid is always pumped only toward the concave surface of the rotary blade 5, the fluid resistance on the convex surface side can be significantly reduced and the rotational energy can be efficiently extracted.
The inner cylinder 7 is integrated with the rotary shaft 6, has a function of connecting the rotary blades 5 and the rotary shaft 6 and concentrating each flow path in the vicinity of the outer periphery of the rotary body 20. As for the body, when the fluid is a liquid, the buoyancy of the fluid causes the rotary shaft bearing 6A
Although it also has a function of reducing the load on, it can be omitted. Further, a valve seat 15 is arranged on each valve body, and has a function of opening and closing each flow path in cooperation with each valve body. However, some other forms of these opening / closing means are conceivable. For example, a valve that senses a fluid flow direction and opens / closes hydraulically can be used. A switching valve that opens and closes can also be used, and the present invention does not concern the means.

FIG. 2 is a sectional view in the direction perpendicular to the axis, showing an embodiment of the vertical axis wind turbine of claim 2. In the figure, the first flow path 1 is provided around the casing 8 as in the case of the above-described first embodiment.
From the fourth flow path 4 to the fourth flow path 4, and an opening / closing means is provided inside them. The forward flow is from the first flow path 1 to the third flow path 3, and the return flow is from the fourth flow path 4 to the second flow path. It is made to flow to the flow path 2.
Then, a plurality of rotary blades 5 having a curved surface or a slanted surface are provided around the inner cylinder 7 in the direction perpendicular to the axis to form a rotary body 20 together with the rotary shaft 6, and a blade bearing 5A is provided under the rotary body 5 as shown in FIG. The rotary blade 5 is swingably connected to the side plates 7A and the circumferential ribs 7B of the inner cylinder 7 by the small shaft 17. Further, the small shaft 17 is attached at a position of a predetermined height from the outer peripheral surface of the inner cylinder 7, and the lower portion of the rotary blade 5 is provided with the blade foot 5B protruding from the blade bearing 5A by a predetermined dimension. When 5 is opened at a predetermined angle, the wing feet 5B hit the inner cylinder 7 and cannot be opened any further. There are various other possible means for preventing the rotary blades 5 from opening beyond a predetermined angle. For example, as shown by phantom lines in FIG.
It is also possible to provide C so that the lower portion of the rotary blade 5 contacts the side surface of the rib 7C at a predetermined angle, and the present invention is not limited to that means. The rotary blade 5 having such a structure automatically opens to a predetermined angle with respect to the inner cylinder 7 when the fluid is pumped to the concave side, and on the opposite side, the convex side is pushed by the fluid to automatically close. Although a force is applied, if the number of rotations increases, it may be difficult to close due to centrifugal force, or the impact when opening may increase. Therefore, as shown in FIG. 14, the spring 28 is provided below the rotary blade 5 according to the design conditions. It may be provided to assist the closing operation and reduce the impact when opening.

In this structure, the gap between the casing on the side where the rotor blades 5 are closed becomes large, so it is necessary to prevent the fluid flow in that direction. In addition to the valve mechanism described above, as shown in FIG. In addition, the casing 8A between the first flow passage 1 and the second flow passage 2 is configured such that the gap between the closed rotary blade 5 is smoothly reduced toward the first flow passage 1 side.
An elastic shield plate 19 is provided on the side where the wall thickness of the is closest to the inner cylinder, and the front end side thereof is pressed against the rotary blades 5 by fluid pressure. The same applies to the fourth flow path 4 and the third flow path 3 side symmetrically with respect to these and the rotary shaft 6 as a base axis, so that in any reciprocating flow, fluid flow to the side where the rotor blade 5 is closed is prevented. be able to. The elastic shield plate 19 is not indispensable, and the fourth flow path 4 for the forward flow and the first flow path 1 for the return flow are closed by the valve mechanism without providing the elastic shield plate 19. Large amount of fluid does not leak. In the vertical axis wind turbine constructed in this way, the convex surface of the rotor blade 5 closes and the fluid is retained, so that the fluid resistance is minimized and the rotational energy can be extracted very efficiently from the reciprocating flow. You can The external perspective view of this embodiment is as shown in FIGS. 8 and 10.

FIG. 5 is a sectional view showing an embodiment in which the vertical axis wind turbine of claim 3 is used for micro-hydropower generation. As shown in this figure, one set of flow paths is provided near the lower side surface of the casing 8 so that the water flow flows from the first flow path 1 to the third flow path 3 in a gentle S-shape. A rotating body 20 having characteristics is provided. In the vertical axis wind turbine, the rotating shaft 6 can be set in the vertical direction, but if the rotating shaft 6 is set in the horizontal direction as in this example, the width of the rotary blade 5 can be easily increased, and a large amount of fluid can be used. Since it can absorb energy, it is suitable for a micro hydraulic power generation device, a wind power generation device, and the like. Also,
There is an advantage that the rotary blade 5 opens due to its own weight as it moves downward and conversely acts as it closes as it moves upward, so that the rotary blade 5 can be opened and closed more smoothly. The pressure water flowing from the first flow path 1 provided in the lower part of the weir hits the rotary blades 5 to rotate the rotating body 20, and the generator 18 provided outside the rotating body 20 generates electric power. As a measure for preventing the accumulation of sand and gravel on the weir, a sand discharging gate 26 is provided in this example, and the sand discharging door 27 is slid upward to open the gate when the water level increases. When the amount of water exceeds the capacity of the sand discharge gate 26, the weir is allowed to flow freely over the weir. The micro hydraulic power generation device having such a structure is suitable when a weir having a relatively large head can be installed.

FIG. 6 is a perspective view showing an embodiment in which the vertical axis wind turbine of claim 4 is used for micro hydraulic power generation, FIG. 7 is a sectional view taken along line XX, and FIG. 4 is a rotation for the turbine. It is a cross-sectional view of the blade 5. A blade cavity 5C near the tip inside the rotor blade 5
Is provided, and buoyancy is generated when the fluid is a liquid. As a result, contrary to the example of FIG. 5, the rotary blade 5 opens as it moves upward, and conversely as it moves downward, a force acts to close it, and the opening / closing operation of the rotary blade 5 is smoothly performed. Since the first flow path 1 and the third flow path 3 are provided on the upper side of the casing 8 and the flow path inside the weir leading to the first flow path 1 is inclined from the vicinity of the upstream water surface, the water flow accelerates and rotates upward. It collides with the wing 5 and rotates the rotating body 20. The functions of the sand removal gate 26 and the sand removal door 27 are the same as in the above example. Floating materials are removed by providing a gutter. The micro-hydroelectric power generator having such a structure can be installed in a fast-flowing river, and the kinetic energy can be used to efficiently generate power.

FIG. 8 is an embodiment in which the wave power generation device of claim 5 is installed on the shore, and FIG. 9 is a sectional view taken along the line YY of FIG. However, the levee is not shown in FIG. It is preferable that the device is installed on a V-shaped shore where the waves are active and the right and left sides are of a suitable size. Furthermore, a wave collection chamber 21 consisting of concrete or steel bottom plates, side walls, ceiling walls, etc. is installed on the sea side of the embankment. It is provided. The vertical axis wind turbine of claim 2 is installed on the shore side of the rotary shaft 6 having a sufficient length in the horizontal direction, and the first reciprocating flow pipe 9 is connected to the rear wall of the wave collecting chamber 21,
The reciprocating flow pipe 10 is connected to the storage tank 16. Thus, as the water level in the collection chamber 21 fluctuates due to the wave motion, the water level in the storage tank 16 naturally tries to follow it, and the outflow and the backflow alternately occur, whereby the embodiment of claim 2 is realized. The vertical-axis wind turbine works in the same way as described above, and can be powerfully rotated by a large amount of seawater. In this example, as shown by the phantom line, it is affected by the water level fluctuation due to the tide, but if the wave power generation device is installed on a sufficiently large floating body, it will follow the water level fluctuation due to the tidal effect. Can be avoided, and the oscillation of the device due to waves can be reduced. Although the vertical axis wind turbine of claim 2 is used in the present embodiment, the vertical axis turbine of claim 1 can be replaced with this although the efficiency is reduced.

FIG. 10 shows an embodiment of the wave power generation device of claim 5 which employs the vertical axis wind turbine of claim 2 in which the rotary shaft 6 is in the vertical direction. In the same way as the above example, the outflow is the collection chamber 21
Flows from the storage tank 16 through the first flow path 1 and the third flow path 3 into the storage tank 16, and the return flow flows from the storage tank 16 through the fourth flow path 4 and the second flow path 2 into the wave collecting chamber 21 and rotates between them. The body 20 and the generator 18 are rotated to generate electricity. In this embodiment, since there is no difference between the upper and lower sides of the flow path with respect to the reciprocating flow, there is an advantage that uniform rotation can be obtained as compared with the above-mentioned example, but there is a limitation in the vertical dimension, so a relatively small It has the disadvantage that it can only be applied to devices.

FIG. 11 is a perspective view showing an embodiment of the wind turbine generator of claim 6 using the vertical axis wind turbine having the features of claim 3 (a), and FIG. 12 is a cross section taken along line ZZ of FIG. It is a figure. In this example, the rotating shaft 6 is horizontal and the first flow path 1
The third flow passage 3 is located closer to the lower side of the casing 8, and the cross-sectional areas of both flow passages are enlarged toward the opening. Therefore, the airflow flowing from the first flow passage is compressed and the rotor blades 5 are compressed. It is rotated and flows out to the third flow path. As means for keeping the inlet of the first flow path 1 always in the wind direction, a rotary disk 22 at the lower center of the casing 8 and wind direction plates 23 at the left and right ends are provided. This means detects the wind direction and hydraulically rotates the rotary disk. A method of rotating 22 may be used, and the present invention is not concerned with the means. When the present device is installed in an area where the wind direction is almost constant, a plurality of deflection plates 24 are provided at the inlet of the first flow path 1 instead of the turntable 22 as shown in FIG. You may make it connect with the rod 25 and interlock with the central wind direction plate 23. In such a wind power generator, since the width of the rotor blades 5 can be increased and a large amount of wind can be used, the height of the device can be suppressed even if the size is increased.

A wind turbine generator of claim 6 using a vertical axis wind turbine having the features of claim 3 has a rotor 20 in the embodiment shown in FIG. 12 which has the feature of claim 2 (a). Although replaced with the body 20, the lower part of the rotary blade 5 has a structure in which a spring 28 is provided as shown in FIG.
When there is no load, it is preferable that all the rotor blades 5 be in an open state. That is, when the fluid is gas, only a part of the rotor blades 5 is opened and the rotor 20 in an imbalance state consumes a large amount of energy to return. Is fully opened by the spring 28 along the axial rib 7C to keep the rotor 20 in balance. When the wind pressure rises, on the side where the gas flow is received by the convex surface, the rotary blade 5 rotationally moves to the closing side according to the wind pressure. Since the resistance on the convex surface side of the rotary blade 5 is reduced in this way, the efficiency can be further increased as compared with the above-mentioned embodiment. However, as the number of rotations increases, it becomes difficult to close the rotor blades 5 due to centrifugal force, so the rotor blades 5 are made as light as possible.

[0020]

Since the vertical axis wind turbine, the wave power generation device and the wind power generation device according to the present invention are configured as described above, they have the following effects.

In the vertical axis wind turbine of claim 1, a reciprocating flow driven by wave power or the like is positively applied only to the concave side of the rotor blade 5 in the chamber surrounded by the casing 8, and the casing 8 is applied to the convex side. Since only the fluid that stays inside is in contact, the fluid resistance on the convex side can be reduced and the energy conversion efficiency can be greatly improved compared to the conventional structure.

In the vertical axis wind turbine of claim 2, not only is the rotor blade 5 closed on the side not receiving the fluid flow, but it is only in contact with the fluid accumulated in the casing 8. Therefore, the fluid resistance on the convex side of the rotor blade 5 is increased. The rotational energy can be extracted from the reciprocating flow very efficiently. The wind turbine of this structure is particularly effective for low pressure and low speed liquids.

According to the vertical axis wind turbine of claim 3, the vertical axis wind turbine of claim 2 can be used for one-way flow.
The structure in which the convex side of the rotor blade 5 is closed can be used in a micro hydraulic power generation device, a wind power generation device, or the like to improve the efficiency as compared with the conventional structure.

In the vertical axis wind turbine of the fourth aspect, since the rotary shaft 6 is limited to the horizontal direction and the buoyancy is given to the rotary blades 5, the rotor 5 on the upper side receives fluid pressure in the micro hydraulic power generator or the like, and the rotary body is rotated. 20 can be rotated.
This structure is suitable for capturing the kinetic energy of the surface layer in a violent water environment.

Since the wave power generator of claim 5 directly introduces seawater into the vertical axis wind turbine of claim 1 or 2, there is a risk of contamination by seaweed, but the reciprocation of other liquids. A device having a simple structure can be provided as compared with a device for converting into a flow. This device can be either a vertical type or a horizontal type, but particularly in the horizontal type, it is relatively easy to increase the size by increasing the length of the rotary blade 5.

The wind turbine generator according to claim 6 can be upsized by increasing the width regardless of the height of the wind turbine, so that the cost of the wind turbine generator can be suppressed and the maintenance can be facilitated.

[Brief description of drawings]

1 is a sectional view showing an embodiment of a vertical axis wind turbine of claim 1;

FIG. 2 is a sectional view showing an embodiment of the vertical axis wind turbine of claim 2;

FIG. 3 is a perspective view showing an example of a lower portion of the rotary blade 5 of the vertical axis wind turbine of claim 2;

FIG. 4 is a rotor 5 having buoyancy according to claim 4;
Cross section showing an example of

FIG. 5 is a cross-sectional view showing an embodiment in which the vertical axis wind turbine of claim 3 is used in a micro hydraulic power generation device,

FIG. 6 is a perspective view showing an embodiment in which the vertical axis wind turbine of claim 4 is used in a micro hydraulic power generation device;

FIG. 7 is a cross-sectional view taken along line XX of FIG.

FIG. 8 is a perspective view showing an embodiment in which the wave power generation device of claim 5 is horizontal.

9 is a cross-sectional view taken along line YY of FIG.

FIG. 10 is a perspective view showing an embodiment in which the wave power generation device according to claim 5 is a vertical type;

FIG. 11 is a perspective view showing an embodiment of the wind turbine generator of claim 6;

12 is a cross-sectional view taken along line ZZ of FIG.

FIG. 13 is a perspective view showing a wind direction plate 23 and a deflection plate 24;

FIG. 14 is a cross-sectional view showing an embodiment in which a spring 28 is provided below the rotary blade 5.

[Explanation of symbols] 1st flow path 2 Second channel 3rd flow path 4th flow path 5 rotors 5A wing bearing 5B wings 5C wing cavity 6 rotation axes 6A rotating shaft bearing 7 Inner cylinder 7A side plate 7B Circumferential rib 7C axial rib 8 casing 8A Casing between first flow path and second flow path 9 First reciprocating flow tube 10 Second reciprocating flow tube 11 (for 1st flow path) valve body 12 (for 2nd flow path) valve body 13 (for 3rd flow path) valve body 14 (for 4th flow path) valve body 15 seat 16 storage 17 small axis 18 generator 19 Elastic shield plate 20 rotating body 21 Wave collection room 22 turntable 23 Wind direction plate 24 deflection plate 25 connecting rod 26 Exhaust gate 27 Sand door 28 springs

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[Document name to be corrected] Drawing

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[Figure 1]

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[Figure 3]

[Figure 4]

[Figure 5]

[Figure 6]

[Figure 7]

[Figure 8]

[Figure 9]

[Figure 10]

FIG. 11

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FIG. 14

Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F03D 3/06 F03D 3/06 D E 7/06 7/06 B 9/00 9/00 G

Claims (4)

[Claims] 1. A rotary shaft (6) or a plurality of rotary blades (5) having a concave shape formed by a curved surface or an inclined surface in a direction perpendicular to the rotary shaft (6) or an inner cylinder (7) integrated with the rotary shaft (6). In the wind turbine, the first flow path (1) and the third flow path (3) are provided on one side in a direction perpendicular to the rotation axis (6), with a vertical plane that divides the casing (8) into left and right as a symmetrical plane. , A second flow path (2) and a fourth flow path (4) are provided on the opposite side, and a reciprocal flow of a fluid driven by wave force or the like is applied to the first flow path (1) and the second flow path (2),
Or, it is led to a first reciprocating flow pipe (9) in which the both flow paths are assembled,
Means for opening the flow (hereinafter, referred to as “outgoing flow”) flowing from the first flow path (1) is provided in the first flow path (1) and the third flow path (3). (B) A means for opening the flow in the opposite direction to the outward flow (hereinafter referred to as “return flow”) is provided in the second flow path (2) and the fourth flow path (4), and the forward flow is Each flow channel is arranged around the casing (8) so that the first flow channel (1) flows from the third flow channel (3) and the return flow flows from the fourth flow channel (4) to the second flow channel (2). Distribute. A vertical axis wind turbine with the above configuration. 2. The lower part of the rotary blade (5) is opened so that the rotary blade (5) opens to the outer peripheral surface of the inner cylinder (7) only on the side where the concave surface receives the fluid flow, and closes on the opposite side. Small axis (1
Means for connecting to the inner cylinder (7) via 7) and for preventing it from opening beyond a predetermined angle are provided. (B) Supporting the rotating shaft (6) so that the rotating shaft (6) is always eccentric to the side where the rotating blade (5) is closed with respect to the center of the casing (8) in response to the alternating of the forward flow and the backward flow. It is supported by a rotating shaft support (20) that swings around the shaft (19). The vertical axis wind turbine of claim 1, wherein the vertical axis wind turbine is characterized. 3. A vertical axis wind turbine according to claim 1 or 2, wherein the first flow path (1) and the second flow path (2) or the first flow path (1) is used.
The reciprocating flow of seawater by wave force is introduced into the reciprocating flow pipe (9) directly or via the wave collecting chamber (25), and the third flow path (3) and the fourth flow path (4) or both the flow paths are introduced. A power generator using wave power, characterized in that a second reciprocating flow pipe (10) having a set of passages is connected to a storage tank (16) provided outside them to generate electricity. 4. The vertical axis wind turbine according to claim 1 or 2, wherein the first flow path (1) and the second flow path (2) or the first flow path (1) is used.
A reciprocating flow of air obtained by utilizing wave force is introduced into the reciprocating flow pipe (9), and the third flow path (3) and the fourth flow path (4) are communicated with the outside air to generate electricity. A power generator using wave power characterized by the above.