JP2010261432A - Rotor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-cost rotor which shows high performance under a low and middle wind speed condition. <P>SOLUTION: The rotor A includes a plurality of blades (a) with radial direction strip groove and strip protrusion, has a repeated stepped shape in a circumference direction, and has spiral wing (b) which is supported at both ends thereof and which is provided by complex forming disposed along a center axis (d). The rotor A is disposed in a cylindrical air channel. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

Rotor with high performance and low price under low and medium wind speeds.

Background technology

As a conventional example to be compared with the present invention, a multi-blade type, a support type, a cross flow type, etc. are known as low / medium wind speed rotors shown in FIG. The function value of plus drag and minus drag) and the wind speed ratio (rotor circumferential speed / wind speed contrast) are low, so it is not suitable as the main part of a practical small power generation system. More specifically, although a relatively large positive drag can be obtained due to their rotor configuration, there is a serious drawback that lift cannot be lifted and the negative drag is not small. At the same time, it has been shown that the rotor is susceptible to damage because both large and negative drags are generated simultaneously at medium and high wind speeds.

A plurality of blades a formed by bending a blank c, which is trimmed from a flat sheet and folds in a mountain, and has a valley crest corresponding to both portions 1 and 2 in a substantially parallel manner, are provided in a circumferential direction. There is provided a rotor A obtained by arranging spiral wings b which are repeatedly formed in a stepped shape along a central axis d.

Problems of the Invention

Even under low and medium wind speeds, the first challenge is to increase the positive drag that is brought to the rotor A, suppress negative drag as much as possible, and generate new lift that is not small. It is a second problem to provide a rotor structure with sufficient rigidity that can withstand, and a third problem is to sufficiently reduce the manufacturing cost of the rotor A.

Means for solving the problem

A plurality of blades a with grooves or ridges in the radial direction and a double-ended spiral wing b provided in a composite manner as a stepped shape in the circumferential direction is obtained along the central axis d. The rotor A is provided, and the rotor A is provided in a cylindrical wind tunnel.
In addition, the spiral wing b can be processed quickly and easily by simple bending of the flat blank c and has a substantially axisymmetric continuous three-dimensional structure in which external force rigidity in each direction is maintained (subject to topology). Or origami structure).

The invention's effect

The new power generation system employing this rotor A, which enables a larger power coefficient and wind speed ratio by the unique configuration of the present invention, is not limited to low and medium wind speeds, and exhibits excellent power generation effects even at high wind speeds. Obtained. Furthermore, the processing method of the rotor A suitable for mass production could realize significant improvement in power generation effect and durability / production cost. The range corresponding to the power characteristics of the rotor type is shown in the shaded area in FIG.

Best Mode for Carrying Out the Invention

1, 2, 3, and 4, which briefly describe embodiments of the present invention and various technologies related to the present invention, are schematic elevations and planes of a two-type rotor A of the present invention.
5 to 16 are cross-sectional perspective views of various blades a according to the present invention in the short direction.
17 to 20 are cross-sectional perspective views in the short direction in which a plurality of various blades a related to the present invention are formed in a composite manner.
21 and 22 and FIGS. 23 and 24 are a partial plan view of a two-type blank c according to the present invention and a partial perspective view of a two-type rotor A by them.
25 and 26 and FIGS. 27 and 28 are a perspective view and a two-way cross-sectional schematic view of a two-type power generation system obtained by incorporating the two-type rotor A of the present invention and them.
The nine main terms used in the claims and the specification will be explained below in advance.

<Blade a> See FIGS. 5 to 16, FIGS. 17 to 20, and FIGS.
The blade a of the present invention is a substantially strip-shaped unit member provided in the radius or diameter direction of the rotor A, and there are two types of members that straddle the center axis d and the center axis stay.
As the detailed form of the blade a, there are a thin sheet shape and a thick plate shape in the short side direction cross section, the former being a straight shape, a bent shape, a curved shape, etc., or a suitable combination thereof, the latter As a typical example, the cross section of the propeller is used, so that various grooves or various ridges are provided in the long side direction. In addition, the configuration of the blade a includes a single blade and a combination of a plurality of blades. In addition, an opening for the central axis, various fixed joints, and accessory parts may be provided in advance at the center or end of the blade a.

<Spiral Wing b> See FIGS. 1-4, 17-20, 23-24
The spiral wing b according to the present invention is an intermediate member constituting the rotor A, in which a plurality of blades a are formed in a composite manner and arranged along the central axis d. There are three types of composite forming methods: a parallel type separated from each other and a combined type connected to each other and an integrated type provided continuously in advance. More specifically, in the parallel type, each blade a is separated as a unit member. In the composite type, a plurality of blades a as unit members are fixed to each other by some means, and in the integrated type, a plurality of blades are obtained as a single product by simultaneously processing the same sheet material.
The overall form of the spiral wing b includes a double wing type and a single wing type, and the greatest feature of the detailed form is a swirling inclined surface formed by each blade a arranged in a spiral shape with the central axis d as a support. . Both the front and back surfaces of the inclined surface or any one surface thereof are repeatedly provided in the turning direction, and are provided as a stepped shape, not a stepped shape, that is, a rotating slide shape.
There are roughly two types of manufacturing methods for this spiral wing b. One is obtained by three-dimensionally forming a flat sheet by bending, and the other is directly forming three-dimensionally without using a flat sheet. The former is a method of obtaining a spiral wing b in which a plurality of blades are continuously integrated by bending a blank c in which a trimmed flat sheet is fold-folded and valley-folded and both ruled lines are provided in a substantially parallel shape. The latter can be obtained by using a negative mold in the middle or final form of the spiral wing b and by methods such as injection molding, vacuum molding, press molding, RTM molding, etc. with materials such as resin, FRP, etc. It is preferable that the spiral wing is designed so that the primary direction movement of both the male and female molds is possible for demolding.
Although not limited to the above two methods, the material of the spiral wing b is effective in connection with the present invention, in addition to resin, FRP, metal, paper, woven fabric, non-woven fabric, and the like and combinations thereof.

<Blank c> See FIGS.
With the blank c according to the present invention, the outline is formed by trimming a flat sheet with a cutting machine in principle, and the mountain fold, valley fold both equivalent parts 1, 2 or any one of the equivalent parts is substantially parallel. It is preferable that the opening 3 for incorporating the central shaft d and various joint screw holes are provided at the center, and a small communication portion for suppressing wind noise and an arc-shaped cut-off are provided at the end. The above-described mountain fold and valley fold equivalent portions 1 and 2 generally indicate a ruled line by means of linear pushing at the time of cutting, the same half cut, the same machine cut, etc. The corresponding portions 1 and 2 can be processed and formed with a heating wire or the like in the bend forming system of the wing b. As the material for the blank c, paper, resin sheets, metal sheets, various FRP sheets, and combinations thereof are also effective in the present invention.

<Embodiment of rotor A according to the present invention and two types thereof>
1 and 2 of the rotor A elevation of the present invention, and FIGS. 3 and 4 schematically show two types of examples of plan views in the directions of S ₁ -S ₁ and S ₂ -S ₂ . The single-wing spiral wing b is supported by the central axis d, and the double-wing spiral wing b is supported by the central axis d, but the detailed configuration thereof is not shown.

<Examples of blade a and various cross sections thereof related to rotor A of the present invention>
5 to 15 shows a cross-section of the blade a in which the sheet material is processed and FIG. 16 shows a thick plate material processed and formed. 5 to 10 and 13 are bent, and FIGS. 11, 12, 14, and 15 are curved. In addition to these, the above-mentioned cross-sections are appropriately combined, and dimensions and proportions are separately provided. There are some which can freely select a detailed form such as Chillon, and all of them are effective form units of the blade a in connection with the present invention.
17 to 20 show a combination of various blades a. FIGS. 17 and 18 show an integrated type in which the blades a are continuous, and FIG. 19 shows how the blades a are connected by some means. Further, the reinforcing member 5 of the blade itself, which also serves as a material for suppressing the generation of turbulent air, is indicated by a dotted line, and FIG. 20 is a parallel type in which the blades a are separated from each other.

<Two examples of blank c for forming rotor A of the present invention>
FIGS. 21 and 22 show a single blade a and a blank c for forming the same, and FIGS. 23 and 24 show a spiral wing b composed of a plurality of integrated blades a and a method for forming the spiral wing b. A blank c is shown. In the former blank c in FIG. 22, it is trimmed into a strip shape, and two valley-creased ruled lines 2 are provided in parallel, and both ends are formed in an arc shape, and an opening 3 for the central axis is provided. Note that a second single blade to be provided adjacent to the single blade a in FIG. 21 is indicated by a dotted line.
The latter blank c in FIG. 24 is trimmed to a belt-like sheet, and the mountain crease ruled lines 1 and the valley crease ruled lines 2 are alternately provided substantially in parallel with each other, and the opening 3 for the central axis d is provided. The reinforcing material e of the uppermost blade itself, which also serves as a material for suppressing the occurrence of this, is displayed as a propeller-shaped dotted line.

その主風洞Ｂ_１内でスパイラルウィングｂに作用する風朿イの外力は、第一にその表面への風速力であり、第二はその表面と裏面の風速差による揚力であり、裏面への逆風速力が第三である。よりくわしくは、図１７、１８に示される通り、同図の上方又は左上方から風朿イ_１が、そのウイングｂの表面を吹き下り、ウイングｂの裏面にそい風朿イ_２が左上方から吹き下りる。
ウイングｂの表面には整流が、裏面には乱流が発生しやすいため表面から裏面に対して揚力が仂く。結果として表面に鉛直の風速力と、ウイングｂの傾斜直交方向の下方に揚力がともにプラス成分として作用し、ウイングｂの傾斜方向に逆風速力がマイナス成分として仂きウイングｂは水平左方向に充分な推力をうることが出来た。
さらに主風洞Ｂ_１内を２筋の風朿がともに大・小旋回流として流下するために、風洞Ｂ_１へ流入時の自然風速を維持又は増大させられることからウイングｂに作用する風速力の向上に効果的となり、また大小両旋回流によりロータＡのＷＡＫＥ発生を抑制して、更らなる望ましい性能が得られた。<Example of Horizontal Axis Power Generation System Using Rotor A of the Present Invention>
The wind power generation system shown in FIGS. 25, 26 and 27 is characterized by adopting a rotor A having a horizontal axis, and a wind collecting wind tunnel B ₂ in which the rotor A indicated by a solid line in the perspective view 27 is indicated by a dotted line. , Installed in the main wind tunnel B ₁ and the exhaust wind tunnel B ₃ , and connected to a nacelle C that houses a generator, a transmission, and the like that are also indicated by dotted lines. FIG. 25 is a cross-sectional view taken along line S ₃ -S _{3 of} FIG. 27. As a thick arrow, two lines of wind storms flowing down while simultaneously making a large turn and a small turn in the main wind tunnel B ₁ in which the rotor A is installed. Is shown schematically.
In the view of the S ₄ -S ₄ cross section in FIG. 27, a two-way wind storm that flows down around the central axis d while making a large turn and a small turn is shown in a schematic wind.
Although not shown in the drawing, the spiral wing b fixed in the axial direction to the central axis d during normal operation is instantaneously opened as a response to the high wind speed in the rotor A and the power generation system in which the proper operating range is around the middle wind speed. Special joints should be used around the central axis to stretch in the direction and achieve breakage avoidance.
25, 26, and 27, the rotor A, the wind tunnels B ₁ , B ₂ , B ₃ , the nacelle C and other members and parts are all omitted from the assembly specifications. In order to explain the effect of the rotor A, only the main configuration is emphasized. Disclosed below is the characteristic function and action of the rotor in the power generation system. First, a single wind vortex that has flowed into the wind collecting wind tunnel B ₂ is rolled with the spiral wing b in the main wind tunnel B ₁ . In two twisted semi-cylindrical channels

In the main wind tunnel B ₁ , the external force of the wind kite acting on the spiral wing b is first the wind speed force on the surface, and the second is the lift force due to the difference in wind speed between the front surface and the back surface, The reverse wind speed is third. More specifically, as shown in FIGS. 17 and 18, the wind kite ₁ blows down the surface of the wing b from the upper side or the upper left side of the drawing, and the wind kite ₂ from the upper left side of the wing b. Blow down.
Rectification is likely to occur on the surface of the wing b, and turbulence is likely to occur on the back surface, so that lift is generated from the surface to the back surface. As a result, the wind speed force perpendicular to the surface and the lift force below the wing b in the direction perpendicular to the inclination act as plus components, and the reverse wind velocity force acts as a minus component in the inclination direction of the wing b, and the wing b is sufficient in the horizontal left direction. I was able to get a good thrust.
Furthermore the main air channel B ₁ to Kaze朿two muscle flows down together as large and small swirling flow, the wind speed force acting on the wing b because it is caused to maintain or increase the natural wind velocity at the time flows into the air channel B ₁ It became effective for improvement, and the WAKE generation of the rotor A was suppressed by both large and small swirling flows, and further desirable performance was obtained.

<Example of Vertical Axis Power Generation System Using Rotor A of the Present Invention>
The wind power generation system shown in FIGS. 28, 29, and 30 is characterized by employing a vertical axis type rotor A. In the perspective view 29, the rotor A indicated by a solid line is used for wind collection in which a dotted line is displayed. Installed in the wind tunnel B ₂ , the openable / closable / main wind tunnel B ₁ ′, and the exhaust wind tunnel B ₃ , and further connected to the nacelle C indicated by the dotted line.
FIG. 30 is a cross-sectional view taken along the line S ₅ -S ₅ in the perspective view 29. The thick arrows indicate the two winds turning in the main wind tunnel B ₁ ′ where the rotor A is installed, and the slightly thin arrows indicate the wind direction. A wind inlet that horizontally flows in from a vertically long opening of the main wind tunnel B ₁ ′ is shown in a schematic wind. Similarly schematic air diagram 28 is S ₆ -S ₆ cross-sectional view of the perspective view 29, selectively wind朿口began horizontal flows initially only positive wind force wing b in-out仂main air channel B _{1 '} The rotor A can be started. When the rotational speed of the rotor A reaches the level, a swirling wind noise rising in the main wind tunnel B ₁ ′ is generated. As a result, the power generation system obtains a stable wind noise from the lower side to the upper side to strengthen the rotor A. Obtained as possible to rotate. Also, under strong winds, the hinge of wind tunnel B ₁ ′ that can be freely opened and closed was operated to avoid system damage. In addition, a main wind tunnel using fixed guide vanes instead of an openable type is also effective.
In FIGS. 28, 29 and 30, assembly members and parts such as the rotor A, the wind tunnel B, and the nacelle C are omitted in order to emphasize the main configuration of the system and its operation. Kaze朿I and its operation and effect of turning the main air channel B ₁ is not touched in this embodiment since it was disclosed in the embodiment of FIG 25, 26, 27.

<Another Example of Power Generation System Using Rotor A of the Present Invention>
Although neither is shown, there is a power generation system in which the rotor A of the present invention is not directly provided with a wind tunnel and is directly connected to the nacelle C, and then reversed using a system as shown in FIG. 27 or FIG. There is a counter-rotating power generation system (with the axis aligned and the axis aligned in parallel) in which two sets of rotors A are combined, and using a system such as that shown in FIG. There are fixed systems that function even in the case of (b), all of which are effective in connection with the present invention.

<About the various joint parts and members of the spiral wing b and the central axis in the rotor A of the present invention>
As an installation and fixing method of the spiral wing b and the central axis d, nuts, perforated wedges and the like are also effective as spacers. As the central axis d, there are those that are threaded to the full length and those that are threaded only at both ends. There are wedges that are provided only around the central axis d and those that extend to both ends of the spiral wing b. Both are effective in connection with the present invention.

槁梁に、地下鉄、地下道の排気孔に、送電タワー、電柱に、原野、河川敷、丘陵、斜面に、山間部谷合、里山、農道、休耕田に、海岸、海上にさらに船舶に設置可能である。
また水力発電システムとして急流小河川、農地水路、中流、河口河川の水中に設置可能である。その他本ロータＡを用いた高速、高圧な産業用流体、粉粒体ポンプなどして利用可能であり、低騒音の空気ファンとしても有効である。The wind power generation system adopting the rotor A of the present invention is effective not only for a small scale but also for a medium or large scale, and a horizontal and vertical axis type is a detached house, an apartment veranda, Middle and high rise on the roof

It can be installed on the bridge, subway, underground passage exhaust, power transmission tower, power pole, wilderness, riverbed, hills, slopes, mountainous valleys, satoyama, farm roads, fallow fields, coasts and seas.
It can also be installed as a hydroelectric power generation system in rapid stream small rivers, farmland waterways, midstream and estuary rivers. In addition, it can be used as a high-speed, high-pressure industrial fluid using this rotor A, a particulate pump, and the like, and is also effective as a low noise air fan.

Elevated view of rotor A of the present invention Plan view of rotor A of the present invention Elevated view of rotor A of the present invention Plan view of rotor A of the present invention Cross-sectional perspective view of blade a according to the present invention Cross-sectional perspective view of blade a according to the present invention Cross-sectional perspective view of blade a according to the present invention Cross-sectional perspective view of blade a according to the present invention Cross-sectional perspective view of blade a according to the present invention Cross-sectional perspective view of blade a according to the present invention Cross-sectional perspective view of blade a according to the present invention Cross-sectional perspective view of blade a according to the present invention Cross-sectional perspective view of blade a according to the present invention Cross-sectional perspective view of blade a according to the present invention Cross-sectional perspective view of blade a according to the present invention Cross-sectional perspective view of blade a according to the present invention Cross-sectional perspective view of blade a according to the present invention Cross-sectional perspective view of blade a according to the present invention Cross-sectional perspective view of blade a according to the present invention Cross-sectional perspective view of blade a according to the present invention The perspective view of the rotor A of this invention Plan view of blank c according to the present invention The perspective view of the rotor A of this invention Plan view of blank c according to the present invention Schematic plan view of a power generation system according to the present invention Schematic cross-sectional view of a power generation system according to the present invention The perspective schematic diagram of the electric power generation system concerning this invention Schematic cross-sectional view of a power generation system according to the present invention The perspective schematic diagram of the electric power generation system concerning this invention Schematic plan view of a power generation system according to the present invention Power characteristics of conventional example and system of the present invention

a blade b related to the present invention b spiral wing related to the present invention blank d related to the present invention d central axis related to the present invention e reinforcing material for upper and lower blades related to the present invention f blade end related to the present invention Reinforcing member A Rotor B of the present invention ₁ Main wind tunnel B ₁ related to the present invention 'Openable main wind tunnel B related to the present invention ₂ Wind collecting wind tunnel B related to the present invention ₃ Exhaust related to the present invention Wind tunnel C for nacelle according to the present invention 1. Mountain folding equivalent part according to the present invention 2. Valley-corresponding portion related to the present invention B. Opening of the center of the blade according to the present invention. Winds (swirl flow) according to the present invention
Lee _1. The wind of the surface of the spiral wing related to the present invention ₂ The wind of the back of the spiral wing related to the present invention B The horizontal wind of the present invention

Claims (2)

A plurality of blades a provided with grooves or ridges in the radial direction are separated from each other, connected or continuously provided, and a spiral wing b which is repeatedly formed in the circumferential direction and formed in a step shape is a central axis. Rotor A obtained by being arranged along the edge. 2. The blade a according to claim 1, wherein the trimmed flat sheet is bent and formed with a blank c which is formed by folding a mountain and / or a valley into a substantially parallel shape. About.

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