CN102032101A - Vertical axis windmill with arc-shaped blade - Google Patents
Vertical axis windmill with arc-shaped blade Download PDFInfo
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- CN102032101A CN102032101A CN 201110020070 CN201110020070A CN102032101A CN 102032101 A CN102032101 A CN 102032101A CN 201110020070 CN201110020070 CN 201110020070 CN 201110020070 A CN201110020070 A CN 201110020070A CN 102032101 A CN102032101 A CN 102032101A
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- blade
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- wind wheel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Abstract
The invention relates to an arc-shaped blade and a vertical axis windmill consisting of the same. The blade is arc-shaped or ring-shaped; the cross section of the blade is fish-shaped, has a cavity structure and is positioned on one edge of the protrusion side of an arc; part of the rear edge of the cross section is cut; a cut is positioned behind the position having the maximum thickness of the blade; and the length of a cut part accounts for 45 to 70 percent based on chord length. A plurality of arc-shaped blades or ring-shaped blades with the cuts are radially and uniformly distributed on the circumference of a hub to form a wind wheel; an included angle of 0 to 10 degrees is formed between a chord line of the blade and a tangent line of the circumference of the hub; the blades can be mounted in a single-layer or multi-layer mode; and the formed wind wheel can be pulled up and suspended under the action of magnetic pull so as to form a magnetically suspended vertical axis windmill, and has two structure modes, namely an outer rotor structure mode and an inner rotor structure mode according to different types of generators.
Description
Technical field
The present invention relates to the vertical axis windmill of the circular-arc blade of tool, belongs to the energy field of wind-force energy utilized.
Background technique
In the Da Lieshi vertical axis windmill, have the curvilinear Φ type windmill of rope skipping and have high efficient, but it is not easy to start, and the blade manufacturing is had relatively high expectations, the inventor finds when the used blade of this Φ type wind wheel is circular arc type, to have higher efficient equally.Chinese patent 03804514.1 and 200720023978.5 has been introduced the vertical axis windmill that uses trailing edge to have the blade formation of otch respectively, has the advantage that is easy to start, also taken into account simultaneously efficient, but blade all adopts straight-vaned form in these two patents, and cutting part all is arranged in the side towards the wind wheel wheel hub, the inventor finds, when this kind blade is made the circular arc type blade, and when otch is arranged in periphery, it is good to have startability equally, the characteristics that the efficient that has concurrently is high, circular-arc blade need not required the drawing money on credit brace and directly be connected on the wind wheel wheel hub of prismatic blade, therefore windmill can be more firm, and this circular-arc blade with rear edge slit is easy to construct diversified windmill form with it.
Summary of the invention
The present invention be propose a kind of have circular shape, trailing edge has the structure of the Φ type wind wheel blade of part incised notch, and with the method for this blade structure vertical axis windmill.Content of the present invention is:
Described circular-arc blade, be one section circular arc or a ring, its cross section is the fish type, it is a cavity structure, this cross-section is in one side of circular arc convex side, the part of its trailing edge is cut, and otch is positioned at after the vane thickness biggest place, and the length that cuts part is to account for 45～65% of chord length.As shown in Figure 1 and Figure 2.
Like this have a blade that cross section is cut a part of trailing edge, when will producing certain drag effect to wind the time, notch portion promotes the wind wheel rotation, when the rotational speed of wind wheel is hanged down, thisly utilize the effect of gas-flow resistance effect more obvious, help overcoming the resistance of startup, strengthen the startup ability of wind wheel.
Vertical axis windmill of the present invention, system is with a plurality of above-described circular-arc blade or circular blades that have otch, be the radial radiation shape and be installed in the windmill that constitutes on the circumference of a wheel hub evenly distributedly, wherein each blade has equal height in the axial direction, and makes the tangent line of the circumference of the string of a musical instrument of blade and wheel hub that the angle of 0～10 degree be arranged.
Vertical axis windmill of the present invention, can also be by a plurality of above-described circular-arc blade or circular blades that have otch, layering in the axial direction, be on the horizontal plane on the circumference that the radial radiation shape is installed in a wheel hub and constitute, constitute a serial type windmill, each layer wind wheel blade is on the horizontal plane of vertical projection, any two adjacent leaf cross-sections, there is following relation in angle theta between the line of its centre of a chord point and wind wheel rotary middle point: all acute angles (closing the right angle) θ sum is greater than 120 degree, optimum condition is θ=360/ ∑ y, and wherein y is the number of blade.Every layer is made of a blade at least, two-layer up and down blade can have intersection in the axial direction or not have intersection, the maximum diameter place of each layer wind wheel differs and is no more than 1/3, and each layer wind wheel height difference is no more than 50%, and the tangent line of the circumference of the string of a musical instrument of blade and wheel hub has the angle of 0～10 degree when mounted.
Vertical axis windmill of the present invention can also be on the basis of the windmill that the circular-arc or circular blade of above usefulness constitutes, and further adopts magnetic levitation technology, the magnetic suspension vertical shaft windmill of formation.
Magnetic suspension vertical shaft windmill of the present invention is when adopting outer rotor generator, as shown in Figure 6.The stator axis 69 of this outer rotor generator passes on the external rotor 600, the wheel hub 606 of wind wheel is enclosed within on the stator axis 69, stator axis 69 passes wheel hub 606 upper ends of wind wheel, the magnet disk 62 of suction is installed in the top of stator axis 69, the magnet disk 65 of being inhaled is installed in wind wheel wheel hub 606 upper ends, the wheel hub lower end of wind wheel then is connected on the external rotor 600 of generator, and its magnetic suspension is radially born by the radial direction magnetic bearing 67 and 605 that is installed between stator axis and wheel hub.
Magnetic suspension windmill of the present invention is when adopting the internal rotor generator, as shown in figure 11.The suction magnet disk is housed under this generator body, on the following shaft of rotor, is equipped with and is inhaled magnet disk, between shaft on the rotor and electric machine casing, radial direction magnetic bearing is installed.
Magnetic suspension windmill of the present invention except constituting with upper type, can also adopt commercially available magnetic suspension generator to constitute.
Description of drawings
Accompanying drawing 1 is the schematic representation of leaf cross-section and blade shape.Among the figure:
A. leaf cross-section shape b. blade stero shape
Accompanying drawing 2 is shapes of blade body view
Accompanying drawing 3 is the windmill schematic representation that are made of 3 circular arc vanes, among the figure:
3a. the vertical projection 31. wind wheel wheel hubs of windmill schematic representation 3b. wind wheel and wheel hub and rotating shaft 32. circular arc vanes 33. generators
Accompanying drawing 4 is the schematic representation with 2 layers of serial type windmill of circular arc vane formation, among the figure:
4a. the vertical projection schematic representation 41. wind wheel wheel hubs of serial type windmill schematic representation 4b. serial type wind wheel and wheel hub and rotating shaft 42. upper strata circular arc vanes 43. lower floor's circular arc vanes 44. generators
Accompanying drawing 5 is the windmill schematic representation that constitute with the closed annular blade, among the figure:
5a. the vertical projection 51. wind wheel wheel hubs and rotating shaft 52. annular blades of windmill schematic representation 5b. wind wheel and wheel hub
53. horizontal support arms 54. generators
Accompanying drawing 6 is external rotor type magnetic suspension windmill structure figure, among the figure:
61. thrust-bearing 62. magnetic body discs 63. magnetic absorbing mass 64. are inhaled magnet 65. and are inhaled magnet disk 66. circular arc vanes 67. radial direction magnetic bearings 68. radial bearings 69. stator axis 600. external rotors 601. external rotor magnets 602. stator coils 603. stators 604. radial bearings 605. radial direction magnetic bearings 606. wind wheel wheel hubs
Accompanying drawing 7 is internal rotor type magnetic suspension windmill structure figure, among the figure:
701. horizontal gird 705. stator case 706. rotors 707. magnetic body discs 708. magnetic absorbing mass 709. that the horizontal gird 704. of upper strata wind wheel circular arc vane 702. fan blade bearing diagonal arms 703. connection bearing diagonal arms connects lower floor's wind wheel blade bearing diagonal arms are inhaled magnet 710. and are inhaled shaft 712. lower floor's wind wheel circular arc vanes 713. rotor coils 714. radial direction magnetic bearings 715. rotor shafts under magnet disk 711. rotors
Embodiment
Below in conjunction with embodiment, further the present invention will be described, but the present invention is not limited only to these examples.
Example 1:3 blade type Φ type windmill
As shown in Figure 3.The wind wheel of this windmill is made of 3 circular arc fan blades with otch and wind wheel hub, generator etc.Fan blade 32 is installed round wheel hub 31 circumference, is connected on the wheel hub, and the angle between the blade is 120 degree, and promptly 3 blades are divided equally circumference of hub, and generator is installed in the wind wheel bottom.
Example 2: serial type windmill with two-layer Φ type wind wheel
As shown in Figure 4.The wind wheel of this windmill is in series by two-layer Φ type wind wheel up and down, and every layer of wind wheel has 2 blades, and upper strata wind wheel and lower floor's wind wheel press optimum condition θ=90 degree layouts, and generator places bottom the wind wheel.
Example 3: the windmill that constitutes by two closed round ring type blades
As shown in Figure 5.The wind wheel of this windmill has the blade 52 of two circular shapes, place the both sides of wind wheel wheel hub and rotating shaft 51 symmetrically, horizontal support arms 53 is passed the central authorities of circular shape blade 52, links to each other 54 belows of settling horizontal support arms 53 of generator with two points on the annular blade circumference.
Example 4: external rotor magnetic suspension windmill with circular-arc blade
As shown in Figure 6.The wind wheel of this windmill partly is made of 601～604 etc. of blade 66, wind wheel wheel hub 606, central rotating shaft 69 and master section.Be connected with wind wheel blade 66 and wind wheel wheel hub 606 on the external rotor 600 of generator, the upper end of wind wheel wheel hub 606 is equipped with is inhaled magnet disk 65, being inhaled magnet 64 is installed on 65, with 65 corresponding tops magnetic absorbing mass 63 is installed, 63 are fixed on the below of magnetic body disc 62, and 62 are fixedly mounted on the stator axis 69, and thrust-bearing 61 is installed between 62 and 65, be used to guarantee leave certain space between 63 and 64, avoid contacting with each other; Between wind wheel wheel hub 606 and stator axis 69, radial direction magnetic bearing 67 is installed, and protectiveness bearing 68, is used to guarantee leave certain space between the Internal and external cycle of magnetic bearing 67 but can clash into mutually; Radial direction magnetic bearing 605 also plays similar effect.
Example 5: internal rotor serial type magnetic suspension windmill with circular-arc blade
As shown in Figure 7.This windmill is the serial type windmill with two-layer monomer wind wheel, blade is a circular arc vane of the present invention, 701 is upper strata monomer wind wheel blade among the figure, 712 is lower floor's monomer wind wheel blade, 702 is the bearing diagonal arm of blade, 703,704 is horizontal gird between the bearing diagonal arm, and they have formed wind wheel jointly; 705 is stator casing, and 706 is rotor magnet, and 713 is rotor coil, and 711 is rotor shaft, and they have formed wind-driven generator jointly; 707 is the magnetic body disc, i.e. magnetic absorbing mass yoke, and 708 is magnetic absorbing mass, and 709 for being inhaled magnet, and 710 for being inhaled magnet disk, and it is fixed on 711, and they have formed maglev major component jointly, and wind wheel and generating rotor are drawn and lifted; 714 is radial direction magnetic bearing, is a thimble structure, and purpose is to reduce wind wheel frictional force radially.
Above example has illustrated method how to utilize this circular arc vane with rear edge slit to make up wind wheel and magnetic suspension serial type windmill, but the present invention is not limited in above-mentioned example, because blade of the present invention can make up mutually, construct the wind wheel of various ways, especially adopt the form of series connection wind wheel, can construct a series of serial type wind wheel, therefore the wind wheel form that is combined into principle of the present invention is very many.Personnel with professional knowledge in related domain; can utilize know-why of the present invention to construct more wind wheel fully; also can make very many moulding aspect the magnetic suspension windmill simultaneously; but only otherwise break away from given necessary condition and the thinking of the present invention, can not exceed the protection domain of requirement of the present invention.
In addition, aspect the magnetic suspension windmill, cooperate blade of the present invention to construct wind wheel, also can produce the magnetic suspension windmill easily, no longer give an example, but also should not exceed protection scope of the present invention at this with commercially available magnetic suspension generator.
Claims (7)
1. the vertical axis windmill of the circular-arc blade of tool, it is characterized in that, described circular-arc blade is one section circular arc or a ring, its cross section is the fish type, be a cavity structure, the side that this cross-section is protruded in circular arc, the part of its trailing edge is cut, otch is positioned at after the vane thickness biggest place, and the length that cuts part is to account for 45～65% of chord length.
2. the vertical axis windmill of the circular-arc blade of tool according to claim 1, it is characterized in that, the wind wheel system of windmill is with a plurality of above-described circular-arc blades that have otch, be on the circumference that the radial radiation shape is installed in a wheel hub evenly distributedly, constitute a wind wheel, wherein each blade has equal height in the axial direction, and makes the tangent line of the circumference of the string of a musical instrument of blade and wheel hub that the angle of 0～10 degree be arranged.
3. the vertical axis windmill of the circular-arc blade of tool according to claim 1, it is characterized in that, the wind wheel system of windmill is with a plurality of above-described circular-arc blades that have otch, layering in the axial direction, be on the horizontal plane on the circumference that the radial radiation shape is installed in a wheel hub and constitute, each layer wind wheel blade is on the horizontal plane of vertical projection, any two adjacent leaf cross-sections, there is following relation in angle theta between the line of its centre of a chord point and wind wheel rotary middle point: all acute angles (containing the right angle) θ sum is greater than 120 degree, optimum condition is θ=360/ ∑ y, and wherein y is the number of blade; Every layer is made of a blade at least, two-layer up and down blade can have intersection in the axial direction or not have intersection, the maximum diameter place of each layer wind wheel differs and is no more than 1/3, and each layer wind wheel height difference is no more than 50%, and the tangent line of the circumference of the string of a musical instrument of blade and wheel hub has the angle of 0～10 degree when mounted.
4. the vertical axis windmill of the circular-arc blade of tool according to claim 1, it is characterized in that, the described wind wheel of claim 1 and claim 2 can adopt maglev way to constitute the magnetic suspension windmill, and the magnetic suspension propeller generator that is constituted can use outer rotor generator and internal rotor generator.
5. the vertical axis windmill of the circular-arc blade of tool according to claim 1, it is characterized in that, when adopting outer rotor generator to constitute the magnetic suspension windmill, this windmill has following structure: the stator axis of outer rotor generator passes on the external rotor, the wheel hub of wind wheel is enclosed within on the stator axis, stator axis passes the wheel hub upper end of wind wheel, the magnet disk of suction is installed in the top of stator axis, in wind wheel wheel hub upper end the magnet disk of being inhaled is installed, the wheel hub lower end of wind wheel then is connected on the external rotor of generator, between stator axis and wheel hub radial direction magnetic bearing is installed, radial direction magnetic bearing is installed in the top and bottom of wind wheel wheel hub respectively.
6. the vertical axis windmill of the circular-arc blade of tool according to claim 1, it is characterized in that, when adopting the internal rotor generator to constitute the magnetic suspension windmill, this windmill has following structure: the suction magnet disk is housed under the generator body, on the following shaft of rotor, be equipped with and inhaled magnet disk, between shaft on the rotor and electric machine casing, radial direction magnetic bearing is installed.
7. the vertical axis windmill of the circular-arc blade of tool according to claim 1 is characterized in that, can adopt at present commercially available internal rotor and external rotor magnetic suspension generator to constitute the magnetic suspension windmill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110020070 CN102032101A (en) | 2011-01-18 | 2011-01-18 | Vertical axis windmill with arc-shaped blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110020070 CN102032101A (en) | 2011-01-18 | 2011-01-18 | Vertical axis windmill with arc-shaped blade |
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| Publication Number | Publication Date |
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| CN102032101A true CN102032101A (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110020070 Pending CN102032101A (en) | 2011-01-18 | 2011-01-18 | Vertical axis windmill with arc-shaped blade |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720638A (en) * | 2012-07-09 | 2012-10-10 | 赵欣 | Vertical blade floating windmill tooth-jointed super-huge type wind generating set |
| RU180159U1 (en) * | 2017-10-17 | 2018-06-05 | Андрей Александрович Нестеренко | Wind turbine rotor |
| CN109356787A (en) * | 2018-12-19 | 2019-02-19 | 四川大学 | Low wind speed self-starting vertical axis rises resistance composite type wind power generator wind wheel structure |
-
2011
- 2011-01-18 CN CN 201110020070 patent/CN102032101A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720638A (en) * | 2012-07-09 | 2012-10-10 | 赵欣 | Vertical blade floating windmill tooth-jointed super-huge type wind generating set |
| CN102720638B (en) * | 2012-07-09 | 2013-11-13 | 赵欣 | Vertical blade floating windmill tooth-jointed super-huge type wind generating set |
| RU180159U1 (en) * | 2017-10-17 | 2018-06-05 | Андрей Александрович Нестеренко | Wind turbine rotor |
| CN109356787A (en) * | 2018-12-19 | 2019-02-19 | 四川大学 | Low wind speed self-starting vertical axis rises resistance composite type wind power generator wind wheel structure |
| CN109356787B (en) * | 2018-12-19 | 2020-03-31 | 四川大学 | Low-wind-speed self-starting vertical shaft lift-drag composite wind wheel structure of wind driven generator |
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Application publication date: 20110427 |