JP6733080B1 - Symmetrical streamline spherical tube shape impeller wind turbine - Google Patents

Abstract

[Problem] Investment in COP25 and ESG has been exclaimed all over the world, and it is important for the future era of electric vehicles to be able to secure completely clean electric energy around the day and night, regardless of the weather. Therefore, it is required that the mainstream wind power generation be more accessible and convenient, can generate power quietly even in a residential area or in the shade, and can be used in a variety of applications, from small, lightweight and inexpensive, and have good power generation performance. SOLUTION: From the concept of circulation of fluid dynamics, in addition to the excellent features of the symmetrical Zhukovsky blade, the longitudinal area structure of the conventional blade is reviewed so that it can move from drastically changing wind speed and weak wind to typhoon, and fluid characteristics The symmetric streamline spherical tube-shaped blade, which has small components and is designed to spread from the concept of the excellent bird's blade, suppresses drag and strengthens against strong winds, and the angle of attack of the two front and back surfaces and the curved surface around the blade The structure that increases the lift-drag ratio. [Selection diagram] Figure 1

Description

The present invention enables wind turbines of various sizes and design shapes for the purpose of efficient wind power generation in a severe operating environment in which the wind direction changes drastically due to the concept of the circulation theory of fluid dynamics and the like. The present invention relates to the technology of blades that make up blades.

Wind power can be generated by day and night regardless of the weather, as long as there is wind, but the wind speed changes drastically in urban areas such as building wind and veranda, so the output is shunned due to unstable output, etc. There is a demand for wind power generation technology that has the performance and durability to generate power in all wind regions from light wind regions (1.6 to 3.3 m/sec: JMA wind power) to typhoons.

Therefore, a known patent (Patent Document 1: FIG. 8 attached to this document) that aims to reduce the weight of the blades of a wind turbine and to improve the safety against a large centrifugal force and wind pressure, in accordance with this, claims 2 The blades are fixed between the support members that are fixed substantially at right angles to the rotation axis direction and that face each other in the vertical direction." Totally different.
Further, in claim 10, "the locking means for preventing the blade from being twisted is provided between the blade and the vertical axis". However, the blade of the present invention has an arm if it receives a large drag force in a strong wind. The entire blade is flexed gently by the blade mounting metal fitting/amplitude spring (107), and the blade is flapping (203) and the amplitude motion is also utilized as energy.
Further, in claim 22, "a blade having a wing-shaped cross section of an airplane, and a side opposite to a direction in which the lift is generated of the blade is cut away", and in claim 4, "a cover member is included so as to be narrowed down. However, the blade of the present invention is completely different in the shape of a symmetrical streamline spherical tube.

As a similar example of the overall configuration, in a well-known patent (Patent Document 2: FIG. 9 attached to this document) that "reduces a bending phenomenon applied to a rotating shaft in a wind turbine to realize smooth rotation," in claim 1, "the rotating blade Is attached at a predetermined angle so that the rotation locus of the blade rotates along the wall surface of the cone with respect to the rotation axis." The blade of the present invention is not a conical surface but a cylindrical surface. Although "the inclination angle of the rotary blade is set to an inclination angle of 30 to 80 with respect to the horizontal plane", the blade of the present invention has no inclination angle and is different in parallel to the rotating surface. Is formed in a substantially trapezoidal shape that is narrower on the upper side and wider toward the lower side." However, the blade of the present invention has no inclination angle. The present invention is completely different from the symmetrical streamline spherical tube-shaped blade (FIG. 1) in basic blade shape, and the vertical axis type wind turbine is a tree-arm blade type vertical axis type wind turbine generator (FIG. 5). ) And the spiral arm wing type vertical axis wind turbine generator (Fig. 6) are completely different in overall structure.

As an example of the present invention, which is slightly similar to the tree arm of FIG. 5 in outer shape, a known patent "consisting of a combination of a Savonius rotor and a Darrieus rotor mounted on a vertical rotating shaft" (Patent Document 3: FIG. 10 attached to this document). ), there is a "combination of a Savonius rotor and a Darrieus rotor mounted on a rotating shaft", but a blade having a symmetrical streamline spherical tube-shaped blade arm (100) attached to a tree arm having a different structure is used. Since the position of each is also variable, the lift-drag ratio is high and the maneuverability is good, there is no Savonius rotor and the function and overall structure are completely different.

Further, as a similar example in which the rotor blades are twisted, in order to solve the problem that "it can be started only by the force of the wind without the need for an electric motor for starting", the solution means "the blade 3 attached to the rotary shaft 1 side. The upper and lower mounting positions are twisted and displaced along the rotation direction of the rotary shaft." in claim 1 of the publicly known patent (Patent Document 4: FIG. 11 attached to this document), "a vertically installed rotary shaft, A Darrieus-type wind turbine device having a plurality of vertically oriented blades attached to a rotating shaft, wherein the upper and lower end portions of the blade on the rotating shaft side are twisted in a rotational direction of the rotating shaft. The vertical axis type wind turbine generator of the spiral arm blade type according to the present invention (FIG. 6) has a structure in which the central axis is offset, The symmetric streamline spherical tube shaped blade arm (100) is attached, and the three-dimensional blade positions can be changed, the lift-drag ratio is high, the maneuverability is good, and the function and the whole structure are different.

Japanese Patent Laid-Open No. 2005-36649 Vertical axis wind turbine generator (Figure 8 attached to this document) JP 2006-57492 A wind turbine and a wind turbine generator (Fig. 9 attached to this document) JP 2009-47030 Wind power generator (Fig. 10 attached to this document) Japanese Patent Laid-Open No. 10-110666 Darius type wind turbine device (Fig. 11 attached to this document)

"Basic fluid dynamics" published by Naohiko Iizuka April 8, 2010 Sangyo Tosho Co., Ltd. P59-75, P86, P120-135, etc. "The University of Tokyo, Kenji Kawachi, Dr. Keiji Kawauchi, Lifting and Drag" https://ci.nii.ac.jp/els/contentscinii_20180626173144.pdf

In the world, COP25 and ESG investment (consideration of environment, society, governance, etc.) were screamed, and even LNG (liquefied natural gas) power generation was questioned, and a non-life insurance company guaranteed the operating rate of wind power generation, etc. It is an urgent task to be able to secure completely clean electric energy at any time of the day or night, regardless of the weather, even in the era of society where the electric vehicle is rapidly expanding. For that purpose, in order to make the mainstream wind power generation more familiar and easy and familiar in a large size, it is possible to generate power by suppressing runaway rotation even in storms, typhoons, etc. from unstable weak wind areas, in residential areas and shade, It can generate power quietly on the north side, and can be installed easily in urban areas such as high-rise buildings and condominiums. It is a small, lightweight, and inexpensive wing structure that can be made middle-sized or large depending on the application, and it can be used for commercial power. If there is a function and durability that can be connected, it will help strengthen the national land.

First, the rule of assigning a three-digit code number in the following explanatory diagram will be described. The first digit is the drawing number and the last two digits are the serial numbers appearing in the drawing, but the common part number is again used in other drawings. It may appear.

In the two-dimensional airfoil theory of fluid dynamics, the generation of lift is explained by the circulation around the airfoil, and its airfoil shape is classified into 5 types by the mapping function of the Laurent series, and the general Zhukovsky airfoil is the most popular and famous. (Non-patent document 1)
However, regarding the multiple blades that make up the wind turbine for wind power generation with good power generation performance even in a severe operating environment where the wind direction changes drastically and the blades that make up this blade, the wind direction angle of the wind turbine and the attack angle of the blade are not required to be controlled. In addition, it is also strong against strong winds, and increasing the degree of freedom in the overall shape and size of the wind turbine is an important factor for its widespread use, meeting various requirements .

Therefore, if you choose a wing that is easy to cope with drastic changes in the natural environment, such as wind directions in all directions in three-dimensional space and weak winds to typhoons, the leading edge has a symmetrical streamline shape and the trailing edge has a center line equivalent to the chord line. In (201), based on the excellent front and back side wind receiving function of the symmetrical Zhukovsky airfoil, which has a trailing edge angle (202) of half each for upper and lower objects, it was unchanged in the concept of conventional wind turbine blades. We reviewed the enormous growth due to the continuous wide plane structure only by extending it in the long direction, and as a new concept, we made it smaller and dispersed to suppress the drag explosion of the wind and strengthen it against strong winds, conversely dispersing the three-dimensional curved area. It was proposed to increase the degree of freedom of the overall wind turbine shape by increasing the lift force to increase the lift-to-drag ratio, and to make the components smaller and flapping closer to the concept of bird feathers whose fluid characteristics have evolved.

As a result, the conventional blade corresponds to the longitudinal direction, which corresponds to the Z-axis direction value (109) in the perspective view of the symmetrical streamline spherical tube-shaped blade of the present invention and FIG. 1 corresponding to the longitudinal direction, and the blade thickness of the conventional blade. , The thickness of the blade (106) is similar to the Y-axis (108) direction value, and the elliptical spherical shape (103) having a long streamline shape in the X-axis direction is used as the leading edge (101) of the blade of the present invention. Put it at the starting point on the axis,
A pipe-shaped hollow cylinder corresponding to the blade thickness (106) in the Y-axis direction is elongated in the X-axis increasing direction (110) and is gradually narrowed down to a vertically symmetrical flat slope (105) and the trailing edge (102). By squeezing the pipe to terminate it, the trailing edge side has a shape like a toothpaste tube (202), so that the vertical symmetrical flat slope elevation angle portion seen from the center line (201) corresponding to the chord line When (105) is formed and receives the downward wind pressure (204) or the upward wind pressure (205), large upper surface lift (206) and lower surface lift (207) are obtained in the front edge (101) direction.

Furthermore, when a strong drag is applied to the vertically symmetrical flat slope elevation angle section (105) from the front due to strong wind, etc., the entire blade bends to the leeward side and tilts due to the fitting metal and the amplitude spring (107) to the arm constituting the wind turbine. By gently flapping the blades and causing the amplitude (203), a tilt attack angle is generated in the leeward direction, and at the optimum angle, a lift of up to about 100 times can be obtained and the lift is also increased. Further, from the center of the blade toward the trailing edge, there is a wide wind receiving range in the 360-degree all-round direction (111) due to the curved surface of the symmetrical spherical spherical surface part (104) from the Y-axis front and back surfaces to the Z-axis both side surfaces. Lifting force is obtained due to the structure that makes it easy to obtain new lift force and at the same time the wind venting effect that disperses and releases excessive wind pressure, and on the contrary, the drag force is small because there is no long and wide wind receiving surface in the conventional long direction and the drag force is small. A symmetric streamline spherical tube-shaped vane type wind turbine having a high ratio basic vane structure is formed.

And, taking advantage of the wind-receiving characteristics of the front and back surfaces of the symmetrical streamline spherical tube-shaped blade of FIG. 1 of the present invention, a plurality of sheets, a large combined lift force in the leading edge direction can be obtained if necessary, and the Y-axis increasing/decreasing direction is the wind direction. By aligning the front edge direction with the rotation direction on each arm that constitutes a wing so that wind can be received from both the front and back sides, a wind turbine that does not require a sudden change in wind direction speed and angle of attack control with a wide range of front and back wind characteristics. Can be configured.

According to a trial calculation of the effect of the present invention, three blades with the area of one conventional blade (tentatively, lengthwise direction 10 and average chord length 2) are used, and the symmetrical streamline spherical tube-shaped blade (blade thickness diameter 0. 7, equivalent chord line 2) If replaced with 8 blades x 3 arm blades, each drag is estimated as the sum of individual surface areas,
Drag (Drag) reduction effect=conventional wing (10×2×3= 60d = 60L )
÷ Main blade type blade (0.7 (front area) × 2 × 8 × 3 = 33.6d = L is also available ) = 1.79
Moreover, since the arm blades of the present invention in FIG. 1 with symmetrical streamline spherical tube-shaped blades can obtain lift force from the left and right three-dimensional portions of each blade (the gap between the blades cannot be a drag force),
Lifting Contribution Surface Effect = 0.7 x 2 (two surfaces on the left and right) x 1 (about half of the chord line length) x 8 x 3 = 33.6L
+ Main blade type blade surface (33.6L) = 67.2L

Therefore, as a conclusion, due to the drag reduction effect, the wind pressure is about 1.79 times stronger ,
The lift contribution surface effect is 1.12 (67.2L/60L), but there is also a new effect when the wind direction suddenly reverses .

Further, although the curved surfaces of the gaps between the symmetrical streamline spherical tube-shaped blades (100) are short, they are evenly placed so that the wind can easily escape. Due to the structure that the enormous wind pressure drag at the time is suppressed, at the same time the airspeed of the curved surface increases and the lift can be obtained at the angle of attack, it is strong against strong winds and efficient even in weak winds. Various design blades can be configured such as Fig. 4), tree shape (Fig. 5), spiral shape (Fig. 6), etc., and various wind turbines can be created according to various uses and installation locations.

In addition, as an effect on mass production, etc., the conical spherical body of the symmetric streamline spherical tube-shaped blade (100), which is the smallest constituent unit of a wind turbine, has a hollow structure that does not require a skeleton, so that a simple and extremely light blade can be made, designed and manufactured. In addition, inspection, management, transportation, assembly, maintenance and inspection are easy, and the number can be increased or decreased according to need during the process, and the size can be increased.
Furthermore, by retrofitting this tube-shaped blade to the blade of an existing wind turbine, improvement in power generation capacity can be expected.

As an actual performance effect, Fig. 7 (performance comparison result of conventional blade horizontal axis type wind turbine VS. symmetrical streamline spherical tube shaped blade & spiral arm blade type horizontal axis wind turbine) shows the horizontal axis type of the conventional blade and the blade of the present invention. The output performance line (701) trial-applied to the wind power generator (Fig. 4) and the output performance line (702) of the conventional horizontal axis wind turbine were compared and evaluated in an actual environment. The horizontal axis represents the wind speed and the vertical axis represents the vertical axis. The output data was automatically logged, tabulated by Excel, and plotted by the method of least squares (straight line). As a result, even with 4 blades x 3 spiral arm blades, the initial performance value was the same as that of the conventional blade type. If so, the performance can be further improved.

FIG. 6 is a perspective view of a symmetrical streamlined spherical tube shaped blade. It is a Z-axis bird's-eye view of a symmetrical streamline spherical tube-shaped blade. It is a Y-axis bird's-eye view of a symmetrical streamline spherical tube-shaped blade. It is a perspective view of a spiral arm blade type horizontal axis wind turbine generator. It is a perspective view of a tree arm wing type vertical axis type wind turbine generator. It is a perspective view of a spiral arm wing type vertical axis wind turbine generator. FIG. 4 is a performance comparison result of a conventional blade horizontal axis wind turbine VS. Symmetrical streamlined spherical tube shaped blade & spiral arm blade horizontal shaft wind turbine of the present invention. It is a perspective view of the blade|wing which concerns on patent document 1. FIG. 11 is a perspective view of a blade according to Patent Document 2. FIG. 16 is a perspective view of a blade according to Patent Document 3. FIG. 16 is a perspective view of a blade according to Patent Document 4.

With the symmetrical streamline spherical tube-shaped blade of the present invention as the basic structure, the windmill shape is easy to use without sacrificing aesthetics, and the curved structure is often used to make it familiar to people, and it is not limited to homes, businesses, and mountain areas. Various usage patterns such as a model to digest locally produced electricity by powering up a roadside station to an "electric station", and a monument to a large power generation tree where people can gather to charge electric vehicles and mobile terminals, especially in times of disaster. In consideration of the above, each embodiment will be described below.

Regarding the multiple blades that make up the wind turbine for wind power generation with good power generation performance even in a severe operating environment where the wind direction changes drastically and the blades that make up this blade, there is no need for wind direction yaw control and blade attack angle control . Furthermore, it is embodied on the basis of the excellent front and back wind direction correspondence function of the symmetrical Zhukovsky wing shape that is highly resistant to strong winds and can increase the flexibility of the overall windmill shape and size.

First, in order to realize the symmetrical streamline spherical tube-shaped blade (100), which is the basic concept described in claim 1, the conventional blade up to now corresponds to the longitudinal direction, and the present invention blade has the symmetrical streamline spherical surface in FIG. A Z-axis direction value of the perspective view of the tube-shaped blade and a streamline-shaped long ellipsoidal sphere similar to the blade thickness (106) are placed at the starting point on the X-axis as the leading edge of the blade, and the Y-axis direction is set. The blade thickness of the upper and lower widths of the elliptic cylinder becomes longer in the X-axis increasing direction, and is gradually narrowed down to a trailing edge to make a trailing edge angle. It becomes a symmetrical flat slope angle of attack (105), and if it receives downward wind pressure (204) or upward wind pressure (205), it will form a structure that can obtain a large driving lift (206, 207).

Also, if a large drag force such as a strong wind is applied, the entire blade is bent downwind by the attachment metal fitting and the amplitude spring (107) to the arm blade to gently swing the blade and spread it (203). The angle of attack of the surface inclines toward the leeward, further increases the lift, and widens from the center of the blade toward the trailing edge with the curved surface of the symmetric tubular spherical surface portion (104) on both the front and back sides of the Y axis and opposite sides of the Z axis, The basic blade structure with a high lift-to-drag ratio is created by the structure that has a wide wind receiving range on the entire 360-degree circumference surface (111) and is easy to obtain lift, and the curved surface part of the wind vent structure that disperses and releases excessive wind pressure. Realized symmetrical streamline spherical tube shaped blade.

There are many light, durable, and inexpensive materials, and the trailing edge of the blade is a wide width (301) obtained by flatly crushing an oval spherical (103) size hollow cylindrical tube. It also has a structure in which the mounting arm does not bend due to centrifugal force during rotation.
In the description, if a blade is attached to each XX arm, it is referred to as an XX arm wing .

Next, in order to apply to the two-dimensional spiral arm blade type horizontal axis wind turbine generator of FIG. 4 described in claim 2, the maximum combined lift force in the front edge direction is provided on the three mounting arms configured as blades. In order to easily obtain the driving force of the same, the direction of rotation (408) that does not change even when headwind is directed, and the same disk-shaped rotary sweep surface (408) is parallel to the trailing edges (102) of all tube-shaped blades (100). By connecting a plurality of tube-shaped blades in accordance with the rotational driving force required by the blade mounting amplitude spring (107), the wind turbine part of the horizontal axis type wind power is oriented in the wind direction (404, 405). By the wind pressure on the symmetric flat slope angle-of-attack part (105), the direction of the wind turbine is autonomously controlled by the wind direction corresponding rotation part (409) in the direction in which the wind comes, so that the wind can be more efficiently received. The blade (401) is accelerated and rotated in the rotation direction (408), and due to a wide range of wind receiving characteristics on the front and back of the streamlined spherical tube shaped blade, abrupt wind direction change, attack angle control, and reverse yaw tracking control are also unnecessary. A horizontal axis type wind turbine generator (400) is configured.

Also, in a general horizontal axis wind turbine, all the blades come to the wind receiving position if the wind direction is correct, so the lift torque is large, but the wind direction changes frequently and it may stop until the wind direction matches sudden wind headwinds. is there. However, in this horizontal axis type wind turbine generator (400), the tube-shaped blades (100) are evenly placed as a structure where the wind easily escapes due to the curved surfaces of the mutual gaps, so that a large drag is dispersed and strong wind is generated. Strong, the huge wind pressure drag of the wing is suppressed, at the same time the airspeed of the curved surface part is increased, and also the angle of attack and the lift can be obtained, so the contradictory problems in the case of a large wing can be solved, and By changing the arrangement, various types of blades can be constructed, and it is possible to realize wind turbines that can be installed in various locations.

The vertical axis type wind turbine is excellent in non-directional wind direction, but since half of the blade area is always at the opposite position to the lee side, the total wind receiving area of more than twice is required. Countermeasures need to be doubled or more. However, according to the above-described effect trial calculation, the symmetrical streamline spherical tube-shaped blade of FIG. 1 of the present invention has a lift effect on the front and back surfaces and a reduced drag force.

In order to realize the tree-arm wing type vertical axis type wind turbine generator of FIG. 5 in consideration of the natural landscape as described in claim 3, the mounting tree arms (502) to be configured have a leading edge direction. In order to easily obtain the maximum combined lift driving force (208), the multi-cylindrical rotary sweep surface (506) and the trailing edges of all the attached tube-shaped blades are aligned with the rotational direction (506). By installing a plurality of springs according to the rotational driving force required by the mounting amplitude springs (107) so that (102) are parallel to each other, the vertical symmetrical flat slopes of the symmetrical streamline spherical tube-shaped blades corresponding to the wind direction position A wind turbine having functional features that can receive wind from the front and back surfaces of the corner portion (105), rotates the mounting arm blade (502) in the rotation direction (506), and does not require wind direction control or attack angle control can be realized.

Further, as a structure for stabilizing the operation of the entire wind turbine in a harsh operating environment, a heavy multi-pole coreless generator (504) is placed at the center of the vertical shaft wind turbine, and is supported by a thick strut (503) to support the tree arm blades. The upper part is supported by the hub (507), the central part is supported by four hubs and high-speed rotation stabilizers (508), and the lower part is supported by the hub and rotating bearings (505) to suppress vibration during high-speed rotation and prevent strong wind. Is being pursued.

Further, as another embodiment of the vertical axis wind turbine described in claim 4, in order to realize a spiral arm blade type vertical axis type wind turbine generator, the three-dimensional shape of each blade (100) of the arm blade during rotation is shown. In order to improve the lift driving force by gradually changing the wind-receiving position, the center of the spiral arm wing (601) is slightly displaced from the rotary shaft (604) first, and the upper part also functions as a spiral arm wing upper support hub and stabilization. Depending on the number of arm wings (601) required, the wheel (603) is supported at the center by a spiral arm blade central support hub and a high-speed rotation stabilizing stabilizer (602), and at the bottom by an arm blade lower support hub (606). Balanced during rotation, they are connected to each other, and in each of the four spiral arms (601), in the rotating direction (608) and in order to easily obtain the maximum combined driving force in the leading edge direction of the blades, and multiplex. Attach a plurality of tube-shaped blades according to the rotational driving force required by the blade attachment amplitude springs (107) so that the trailing edges (102) of all the tube-shaped blades attached according to the variable cylindrical surface shape (608) are parallel. This allows the wind to be received by the front and back surfaces of the symmetrical vertical streamlined flat angle of attack (105) of the symmetrical streamline spherical tube-shaped blade (100) corresponding to the wind direction position, and the spiral arm blades rotating to control the wind direction and angle of attack. A wind turbine with unnecessary functional features can be realized.

Also, it is basically the same as the tree-arm blade type vertical axis wind turbine generator of Fig. 5, but as a stabilizing structure when increasing the size of the wind turbine, a heavy multi-pole coreless generator (605) is used as the center of the entire vertical axis wind turbine. It is installed on the base and supported by a thick support (607) to prevent vibration during high-speed rotation and prevent strong wind.

In addition, by changing the shapes of various arm blades in the new wind turbine development and the mounting angle of the symmetric streamline spherical tube shaped blade mounting bracket and the amplitude spring (107), it is possible to design even more various wind direction compatible wind turbines. If dimensional CAD or the like is used, it is possible to easily and widely confirm the prototype as shown in the drawings of the present application.

100 Symmetrical streamline spherical tube-shaped blade 101 Front edge 102 Trailing edge 103 Elliptical spherical shape 104 Vertically and horizontally symmetrical tubular curved surface section 105 Vertically symmetrical flat slope elevation angle section 106 Blade thickness 107 Mounting bracket and amplitude spring 108 Y-axis 109 Z Shaft 110 X-axis 111 360° wide wind-receiving characteristics 201 Equivalent to chord line (center line)
202 Trailing edge angle 203 Amplitude operation in which the entire blade flaps with a mounting spring 204 Downward wind pressure 205 Upward wind pressure 206 Upper surface lift 207 Lower surface lift 208 Synthetic driving force 301 Equivalent width of flattened cylinder 400 Symmetric streamline spherical tube shaped blade A spiral-arm blade type wind turbine generator (3 blades, 12 blades)
401 Vortex arm blades composed of symmetrical streamline spherical tube-shaped blades 402 Blade mounting fittings for swirl arm 403 Three mounting arm blades 404 Wind flow 405 No yaw reversal control even in sudden wind direction reversal 406 Nacelle (transmission & generator )
407 Horizontal axis wind turbine rotation axis 408 Rotation direction and rotation sweep surface (disk shape)
409 Wind-direction-corresponding rotating part 410 Durable column 500 Tree-arm wing type wind turbine generator composed of symmetrical streamline spherical tube-shaped blades (4 blades 36 blades in total)
501 4 tree arm wings composed of symmetrical streamline spherical tube-shaped blades 502 tree arms (4 in total)
503 Thick column 504 Multi-pole coreless generator 505 Arm lower blade support bearing 506 Rotation direction and rotation sweep surface (multiple cylindrical surface shape)
507 Tree Arm Wing Support Hub
508 Tree arm wing center support hub and high-speed rotation stabilization stabilizer (4 in total)
600 Spiral arm wing type wind turbine generator composed of symmetrical streamline spherical tube-shaped blades (48 blades in all 4 blades)
601 4 spiral arm blades composed of symmetrical streamline spherical tube-shaped blades 602 spiral arm blade central support hub and high-speed rotation stabilizing stabilizer (4 in total)
603 Spiral arm upper wing support hub and stabilizing wheel 604 Rotating shaft 605 Multi-pole coreless generator 606 Lower arm wing support hub and bearing 607 Thick post 608 Rotation direction and rotational sweep surface (multiple variable cylindrical surface)
701 Output performance of spiral arm blade type horizontal axis wind turbine composed of symmetrical streamline spherical tube type blade of the present invention 702 Output performance of conventional blade horizontal axis wind turbine

Claims (4)

Regarding the structure of multiple arms that make up a wind turbine for wind power generation and the structure of the blades attached to them, a symmetrical Zhukovsky wing that has a rounded leading edge that gradually becomes thinner toward the trailing edge. 1 is invented, which is the minimum basic part of the present invention , with reference to the blade shape called as, and the Z-axis bird's-eye view of the symmetrical streamline spherical tube-shaped blade of FIG. It has a trailing edge angle (202) that gradually narrows, sandwiching the upper and lower parts of the symmetric flat slope angle of attack (105) ,
The conventional type of wing has a long continuous wind surface, which corresponds to the long direction.
In the perspective view of the symmetrical streamline spherical tube-shaped blade of FIG. 1, the Z-axis (109) direction value is shortened as compared with the conventional blade having a continuous long integrated wind-receiving surface, and the blade thickness of the blade of the present invention is reduced. Similar to the Y-axis (108) direction value that is (106), the leading edge of the symmetrical streamline spherical tube-shaped blade is made close to a spherical shape, and the elliptical spherical shape (103) having a long streamline shape in the X-axis direction is formed. The front edge (101) of the blade is placed at the starting point on the X-axis, and the hollow pipe-shaped cylinder having a blade thickness (106) is elongated in the X-axis increasing direction (110) and gradually thinned to the trailing edge (102). ) Forms a trailing edge angle (202) in which the pipe is squeezed and terminated, and when viewed from the center line (201) corresponding to the chord line, it forms a vertically symmetric flat slope normal angle of attack (105). , By attaching these blades to the arm with a space, and by configuring the arm wing,
If the downward wind pressure (204) or the upward wind pressure (205) of FIG. 2 is received, in addition to the structure in which large upper surface lift (206) and lower surface lift (207) are obtained in the front edge (101) direction,
Furthermore, if a large wind pressure (204) or (205) is applied to the vertically symmetrical flat slope angle of attack (105) from above and below in strong winds, etc., it will be an attachment metal fitting and an amplitude spring (107) to the arm blades constituting the wind turbine. As a result, the trailing edge (102) of the blade bends to the leeward side and tilts back, and by flapping the blade and causing the amplitude (203), when the blade is tilted downward or upward, the angle of attack is generated, and the lift force is further increased and the combined driving force is increased. Increase (208),
Further, from the elliptic spherical shape (103) of the leading edge of the blade in FIG. 1, a wide wind flow in the 360° all-round direction (111) on the surfaces of the symmetrical tubular curved surface portions (104) on both the Y-axis front and back surfaces and the Z-axis both side surfaces. Also has a structure that passes through the vertically symmetrical flat slope elevation angle (105) of the continuous surface and easily escapes to the trailing edge (102), and at the same time, an excessive wind pressure is evenly distributed in the gap when a plurality of these blades are arranged. "Symmetrical streamlined spherical tube-shaped blade type wind turbine" characterized by having a basic blade structure that improves the lift-drag ratio and has a light weight because the wind bleeding effect is released to reduce the drag force.
In order to embody the basic blade function of the "symmetrical streamline spherical tube-shaped blade type wind turbine" of claim 1 in the spiral arm blade type horizontal axis wind turbine generator of FIG.
The leading edge direction (101) of the mounting blades is aligned with the rotation direction (408) of the mounting arm (403) configured as a wing so as to obtain the driving force (208) of the maximum synthetic lift, and the same disk surface shape is used. The tube-shaped vane mounting amplitude springs (107) required the total so that the rotating sweep surface (408) and the trailing edge (102) surface of all symmetrical streamline spherical tube-shaped vanes (100) were parallel. By attaching multiple vane-shaped blades according to the rotational driving force,
When the wind direction (404 or 405) slightly changes to 180 degrees and a right angle of 90 degrees that does not cause a sudden reversal , the wind direction-corresponding rotating portion (409) receives wind due to the wind pressure on the spiral arm blade (401), or The direction of the windmill is swiftly and autonomously moved in the direction in which the wind can go, so that the wind can be more efficiently received, and the windmill continuously rotates in a fixed direction (408)
Further, even if the wind direction (404) suddenly reverses to the opposite direction (405), due to the symmetrical wind-receiving characteristics of the vertical symmetrical flat slope angle of attack (105) of the streamlined spherical tube-shaped blades, it continues to operate. Since it continuously rotates in a fixed direction (408), it eliminates the need for angle of attack control and reverse yaw tracking control, which were required in conventional horizontal axis wind turbines, and its blade structure has a strong functional characteristic against strong winds. Symmetrical streamline spherical tube shape impeller type wind turbine"
In order to embody the basic blade function of the "symmetrical streamline spherical tube-shaped blade type wind turbine" of claim 1 in the tree arm blade type vertical axis type wind turbine generator of FIG.
The leading edge direction (101) of the blades to be mounted is adjusted so that the driving force (208) with the maximum combined lift force is obtained in the rotational direction (506) of the tree arm (502) to be mounted, and the rotary sweep of this multi-cylindrical surface is performed. With the installation amplitude spring (107) of the tube-shaped blade, the plurality of blades are arranged so that the over-surface (506) and the trailing edge (102) surfaces of all the tube-shaped blades to be mounted are parallel. By installing,
Since the tree arm blades (502) rotate in the rotation direction (506) by receiving wind at the vertical symmetrical flat slope elevation angle portion (105) of the symmetrical streamline spherical tube-shaped blade of FIG. 1 corresponding to the wind direction surface. , Angle of attack control is not required, and lift can be obtained even at the vertical symmetrical flat slope angle of attack (105) of the leeward arm wing on the opposite side that receives wind, and due to the blade structure it is strong against strong winds and at the same time resembles a tree. "Symmetrical streamlined spherical tube-shaped impeller type wind turbine" which has the functional characteristics of the vertical axis type wind power generator with an outline that is easy to adapt to the natural landscape

In order to embody the basic blade function of the "symmetrical streamline spherical tube-shaped blade type wind turbine" of claim 1 in the spiral arm blade type vertical axis type wind turbine generator of FIG. The upper arm support hub/wheel (603), the central support hub (602), and the lower arm support hub ( shift the center position of the arm from the rotational shaft center (604) position of the wind turbine and balance when the wind turbine rotates. By supporting it with 606), each spiral arm (601) with a structure that also changes the radius when the wind turbine rotates ,
Align the leading edge direction (101) of the blades to be mounted and obtain the same as this cylindrical multi-variable cylindrical surface (608) so as to obtain the maximum combined driving force (208) in the rotation direction (608). 1 so that the trailing edge (102) surfaces of the tube-shaped blades of FIG. 1 are parallel to each other, by mounting a plurality of blades according to the total rotational driving force required by the mounting amplitude spring (107) of the tube-shaped blades,
Three-dimensional wind receiving position of the blades during windmilling is, since it swept more front and back surfaces of the upper and lower symmetrical flat slopes attack corners of the tube-shaped blade which corresponds to the multi-point of the wind direction position (105), the vertical axis type "Symmetrical streamlined spherical tube-shaped blade-type wind turbine" with functional characteristics that can improve the lift driving capability of the wind power generator, and can withstand strong winds due to the blade structure , and can also be upsized.