Patent Publication Number: US-2021164445-A1

Title: Wind Power Generation Apparatus

Description:
BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The present invention relates to a wind power generation apparatus, and more particularly to the apparatus capable of benefiting output power and cost effectiveness as Cost-Performance (CP) ratio of wind power generation. 
     Description of the Related Art 
     A wind power generator can be approximately classified into two types of a vertical axle wind power generator  5  (as shown in  FIG. 1 ) and a horizontal axle wind power generator  6  (as shown in  FIG. 2 ) according to direction of a rotation axle. The structure of the wind power generator mainly comprises three portions of a tower rack, blades, and a power generator, wherein space and structure function of the tower rack merely support one kind of blades and the power generator without developing other purposes. 
     The inventor(s) thinks that space, structure and configuration occupied by the tower rack may have other functions to sufficiently benefit generation power output. 
     SUMMARY OF THE INVENTION 
     The inventor(s) considers the problem needs improvement and therefore, the inventor(s) carries out deep researches to finally create the innovate design upon long term effort. 
     The primary objective of the present invention is to change structural design, space and utilization of pneumatic function in a tower rack, and design in blades and power generator, configuration and system combination to increase generation power output and cost benefits of a wind power generator. 
     A primary characteristic of the invention is that a support axle is disposed inside the tower rack of the wind power generator. An upper vertical axle blade and a lower vertical axle blade arranged upwardly and downwardly are at least pivotally jointed on the support axle disposed inside the tower rack. A windward opening is disposed at the position where a circumference wall of the tower rack corresponds to the upper and lower vertical axle blades. Lateral wind can enter into the tower rack through the windward openings to push the upper and lower vertical axle blades to rotate. Rotation directions of the upper and lower vertical axle blades are configured to form reverse rotation so that rotation torques of the upper and lower vertical axle blades can achieve mutual balance. Moreover, the upper and lower vertical axle blades can be connected to a power generator unit to generate electricity through power outputted by rotation. With the disposition, more blades and power generators can be added in addition to a wind force blade and a power generator originally supported by the tower rack in conventional technique, and aerodynamic force design inside the tower rack is utilized to benefit the whole power generation effect. 
     The technical characteristics, contents, advantages and effects of the present invention will be apparent with the detailed description accompanied with related drawings of two preferred embodiments as follows. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an appearance of a conventional vertical axle wind power generator; 
         FIG. 2  is an appearance of a conventional horizontal axle wind power generator; 
         FIG. 3  is a structural stereogram (over-length portion of tower rack portion is displayed with dotted line) of an embodiment of the invention applied to the vertical axle wind power generator; 
         FIG. 4  is a partial enlarged drawing according to  FIG. 3 ; 
         FIG. 5  is a structural cross-sectional drawing of an embodiment of the invention applied to the vertical axle wind power generator; 
         FIG. 6  is a partial enlarged drawing according to  FIG. 5 ; 
         FIG. 7  is a  7   s - 7   s  cross-sectional drawing according to  FIG. 6 ; 
         FIG. 8  is a top view according to  FIG. 6 ; 
         FIG. 9  is a structural stereogram of an embodiment of the invention applied to a horizontal axle wind power generator; 
         FIG. 10  is a structural drawing of using a cross-over pipe to connect between tower racks of the vertical axle wind power generator and the horizontal axle wind power generator according to an embodiment of the invention; 
         FIG. 11  is a structural drawing of using cross-over pipes to connect among tower racks of multiple vertical axle wind power generators and one horizontal axle wind power generator according to an embodiment of the invention; 
         FIG. 12  is another structural drawing of induction stator magnetic field according to an embodiment of the invention; and 
         FIG. 13  is a hollow tubular structural drawing of a support axle according to an embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The technical characteristics, contents, advantages and effects of the present invention will be apparent with the detailed description accompanied with related drawings of preferred embodiments as follows. 
     With reference to  FIGS. 3-8 , structural drawings of an embodiment of the invention applied to a vertical axle wind power generator  1  are shown. The vertical axle wind power generator  1  comprises a tower rack  2  that is a hollow shape; an upper and lower sets of rotation blades  10   a ,  10   b  supported above a top end of the tower rack  2 , wherein the two rotation blades  10   a ,  10   b  can be rotated and driven by natural wind force and connected to a power generator (a conventional technique is not shown in the figure) to generate electricity. 
     The primary improvement of the invention is that: the tower rack  2  is hollow column shape and has an empty space  20  therein. An external circumference side of the tower rack  2  is surrounded with a plurality of vertical posts  21 . A side wall of the vertical post  21  is connected to a circumference wall  22  of the tower rack  2  to enhance the structural strength of the tower rack  2 . Moreover, costs are decreased by reducing requirement of sheet material property of the circumference wall  22  composing the tower rack  2 . An immobile support axle  23  is disposed inside the empty space  20 . A top end of the support axle  23  stretches out of a top end opening of the tower rack  2  to pivot the rotation blades  10   a ,  10   b . A circumference wall  22  at a bottom end of the tower rack  2  is configured with several downwind openings  220  capable of being sealed or opened to increase aerodynamic energy inside the tower rack  2 . Moreover, the circumference wall  22  of the bottom end of the tower rack  2  has light transmittance to heat up air within the tower rack  2 . Accordingly, thermal air below the tower rack  2 , through principle of upward heat transport, enters into the tower rack  2  via the downwind opening  220  so that thermal air upwardly moves through chimney effect. Alternatively, air within the tower rack  2  downwardly moves through dynamic power driving to be delivered to another tower rack  2  via the downwind opening  220 . 
     At least two upper vertical axle blade  24   a  and lower vertical axle blade  24   b  ( FIGS. 3, 4 ) upwardly and downwardly arranged are located at the support axle  23  on the top end inside the tower rack  2 . Half barrel auxiliary blades  25   a ,  25   b  homologously linked to the vertical axle blades  24   a ,  24   b  are configured inside the upper and lower vertical axle blades  24   a ,  24   b . The half barrel auxiliary blades  25   a ,  25   b  can take much lateral wind to support initiating rotation of the upper and lower vertical axle blades  24   a ,  24   b  and guide airstream. The rotation directions of the upper and lower vertical axle blades  24   a ,  24   b  are configured as opposite direction so that both rotation torques balance. Furthermore, the rotation dynamic power of the upper and lower vertical axle blades  24   a ,  24   b  can be respectively connected to a power generator to individually generate power through gear mechanism. To increase the rotation speed of the upper and lower vertical axle blades  24   a ,  24   b , blade shape of the upper and lower vertical axle blades  24   a ,  24   b  can, via chimney effect, also be designed to have effect of rotation pushed by upwardly moved wind force in the tower rack  2 . 
     The circumference wall  22  of the tower rack  2  corresponding to the upper and lower vertical axle blades  24   a ,  24   b  is opened with windward openings  26  (as shown in  FIG. 7 , at least one windward opening is provided, and a plurality of windward openings is shown in the embodiment). Wind naturally flowing outside the tower rack  2  can enter into the tower rack  2  via the windward openings  26  to push the upper and lower vertical axle blades  24   a ,  24   b  and the two auxiliary blades  26   a ,  25   b  to rotate. To increase air volume, two sides of the circumference wall  22  corresponding to the windward openings  26  are configured with wind boards  221  obliquely stretching toward outside of the tower rack  2  as shown in  FIG. 7 . 
     An induction stator magnetic field  27 , between the upper and lower vertical axle blades  24   a ,  24   b  that are upwardly and downwardly adjoined, is horizontally and fixedly disposed inside the tower rack  2 . The induction stator magnetic field  27  is composed of comprising a grid hole-like metal plate  270  and an excitation coil  271  (as shown in  FIG. 4 ). The metal plate  270  is supported by the internal wall of the tower rack  2  to position. Axle flow blades  28   a ,  28   b  rotating in accordance with the upper and lower vertical axle blades  24   a ,  24   b  are respectively configured at end surfaces of the upper and lower vertical axle blades  24   a ,  24   b  facing the induction stator magnetic field  27  (when the axle flow blades  28   a ,  28   b  rotate, wind flow direction inside an empty space  20  of the tower rack  2  can be driven to become axle flow). The two axle flow blades  28   a ,  28   b  rotate in accordance with attached vertical axle blades  24   a ,  24   b . Although rotation directions of the two axle flow blades  28   a ,  28   b  are opposite, the design of blade angle can be consistent with a direction of pushing wind force (for example, wind direction is consistently upward). The two axle flow blades  28   a ,  28   b  are processed by magnetization to form rotor magnetic fields  29   a ,  29   b . Between the induction stator magnetic field  27  and the two rotor magnetic fields  29   a ,  29   b , the rotor magnetic fields  29   a ,  29   b  are mutually induced with the induction stator magnetic field  27  through rotation of the rotor magnetic fields  29   a ,  29   b  to divide magnetic force so as to further generate power. The foregoing power generation function increases power generation efficiency through opposite rotation directions of the two rotor magnetic fields  29   a ,  29   b . Moreover, an upper axle flow blade  28   c  homologously linked to the upper vertical axle blade  24   a  is configured at the top end of the upper vertical axle blade  24   a . A lower axle flow blade  28   d  homologously linked to the lower vertical axle blade  24   b  is configured at a bottom end of the lower vertical axle blade  24   b . Disposition of the upper axle flow blade  28   c  and the lower axle flow blade  28   d  can increase pushing of axial wind inside the tower rack  2 . 
     Two auxiliary axle flow blades  28   e ,  28   f  (as shown in  FIGS. 3, 5 ) respectively arranged in upper and lower directions are pivoted below the support axle  12  inside the empty space  220 . The two auxiliary axle flow blades  28   e ,  28   f  are similar to the two axle flow blades  28   a ,  28   b . Blade angles of the two auxiliary axle flow blades  28   e ,  28   f  are designed to reverse rotation directions while receiving axial wind so that both rotation torques balance, and both wind directions are in the same direction. Moreover, blades are processed by magnetization to compose rotor magnetic fields  29   c ,  29   d . A second induction stator magnetic field  27   a  is configured between the two auxiliary axle flow blades  28   e ,  28   f . The second induction stator magnetic field  27   a , which is similar to the induction stator magnetic field  27 , is composed of a grid hole-like metal plate  270   a  and an excitation coil  271   a  winding the metal plate  270   a . It is mutually induced with the second induction stator magnetic field  27   a  through rotation of the rotor magnetic fields  29   c ,  29   d  to divide magnetic force so as to further generate power. With opposite rotation directions of the rotor magnetic fields  29   c ,  29   d , the power generation efficiency mutually induced with the second induction stator magnetic field  27   a  can be increased. With rotation of the two auxiliary axle flow blades  28   e ,  28   f , flowing speed of axially flowing wind entering into the tower rack  2  from the downwind opening  220  can be supported as the same as small tornado effect. The rotation directions of the two auxiliary axle flow blades  28   e ,  28   f  are designed as opposite direction to benefit mutual induction between the rotor magnetic fields  29   c ,  29   d  and the second induction stator magnetic field  27   a  and magnetic force dividing, thereby increasing power generation effect. Further, although the rotation directions of the two auxiliary axle flow blades  28   e ,  28   f  are opposite, a function of being consistent with pushed wind direction is achieved through design of blade shape. The foregoing pushed wind direction is the same as wind directions pushed by the axle flow blades  28   a ,  28   b  through restriction so that the axle flow blades  28   a ,  28   b  and the two auxiliary axle flow blades  28   e ,  28   f  have effect of continuously pushing axle wind flow inside the tower rack  2 . Secondary, no second induction stator magnetic field  27   a  can be disposed between the two auxiliary axle flow blades  28   e ,  28   f . The rotation dynamic energy of the two auxiliary axle flow blades  28   e ,  28   f  can be respectively acted by the gear mechanism to drive a power generator for generating power, thereby benefiting power generation effect. 
     When the embodiment of the invention is applied to a vertical axle wind power generator  1  as shown in  FIGS. 3, 5 , not only rotation dynamic power generated from the rotation blades  10   a ,  10   b , which are pushed by natural wind force, exposed above the tower rack  2  generates power by connecting the power generator but also rotation dynamic power of the upper and lower vertical axle blades  24   a ,  24   b  configured inside the empty space  20  of the tower rack  2  can generate power by linking a respective connected power generator. The axle flow blades  28   a ,  28   b  are processed by magnetization to form rotor magnetic fields  29   a ,  29   b  to mutually induce with the induction stator magnetic field  27  so as to divide magnetic force, thereby generating power as well. The auxiliary axle flow blades  28   e ,  28   f  are processed by magnetization to form rotor magnetic fields  29   c ,  29   d  to mutually induce with the second induction stator magnetic filed  27   a  so as to divide magnetic force, thereby generating power as well. Accordingly, the invention has effect of benefiting power generation capacity. Furthermore, a plurality of downwind openings  220  is configured to a circumference wall  22  at the bottom end of the tower rack  2  according to the invention so that thermal air below the tower rack  2  enters into the tower rack  2  via the downwind opening  220 . With principle of chimney effect, axial wind inside the tower rack  2  is pushed by the auxiliary axle flow blades  28   e ,  28   f , the lower axle flow blade  28   d , the two axle flow blades  28   a ,  28   b , and the upper axle flow blade  28   c  from the bottom to the top to compose small tornado effect. Axle directional wind force is extremely powerful to increase axial wind speed inside the tower rack  2 , thereby increasing better power generation effect. 
     Next, with reference to  FIG. 9 , a structural drawing of an embodiment according to the invention is applied to a horizontal axle wind power generator  3 . The structure of the tower rack  2  and mechanism configuration inside the tower rack  2  are the same as shown in  FIGS. 3, 5 . 
     With reference to  FIG. 10 , a cross-over pipe  4  having light transmittance communicates the downwind openings  220  at the bottom ends of the tower racks  2  of the vertical axle wind power generator  1  and the horizontal axle wind power generator  3 , and axial wind direction inside the tower rack  2  can be designed. For example, axial wind direction inside the tower rack of the horizontal axle wind power generator  3  is downwind (as shown in arrow A) while axial wind direction inside the tower rack of the vertical axle wind power generator  1  is upward (as shown in arrow B). Axial wind inside the tower rack  2  of the horizontal axle wind power generator  3  flows into the tower rack of the vertical axle wind power generator  1  according to Bernoulli&#39;s law after heating up through outer heat of the cross-over pipe  4  having light transmittance so that air quantity inside the tower rack of the vertical axle wind power generator  1  can be further benefited. With chimney effect, air flow taking and rotational speed of the vertical axle blades  24   a ,  24   b , the axle flow blades  28   a ,  28   b , and the auxiliary axle flow blades  28   e ,  28   f  inside the tower rack  2  can be increased to have better power generation effect. As shown in  FIG. 11 , the downwind openings  220  among a horizontal axle wind power generator  3  and a plurality of vertical axle wind power generators  1  are communicated with the cross-over pipes  4 . Moreover, the downwind openings  220  of a plurality of vertical axle wind power generators  1  and a plurality of horizontal axle wind power generators  3  are communicated with the cross-over pipes  4 . Accordingly, wind inside different tower racks  2  can be introduced into adjacent tower racks  2  through forward setting of wind direction so as to benefit wind power generation effect. 
     Afterward the structures of the two auxiliary axle flow blades  28   e ,  28   f  and the second induction stator magnetic field  27   a  disclosed in  FIG. 5  can be shown in  FIG. 12 , wherein rotation directions of the two auxiliary axle flow blades  28   e ,  28   f  are opposite and are magnetized to have S, N poles. The structure of the second induction stator magnetic field  27   a  is shown in  FIG. 12 . A disposition position of an internal wall of the tower rack  2  relative to the two auxiliary axle flow blades  28   e ,  28   f  is attached with a circle of permanent magnet  271   c . A set of horizontal excitation coils  271   b  is levelly extended from an intermediate of the permanent magnet  271   c  and between the two auxiliary axle flow blades  28   e ,  28   f . Vertical excitation coils  271   b  are respectively extended from the permanent magnet  271   c  and at upper and lower directions of the set of horizontal excitation coils  271   b . The two vertical excitation coils  271   b  are respectively located at neighbor sides of the two auxiliary axle flow blades  28   e ,  28   f . When the magnetized two auxiliary axle flow blades  28   e ,  28   f  rotate, both blades generate relative link together with the excitation coils  271   b . Since line of magnetic force is divided to generate power and rotation directions of the two auxiliary axle flow blades  28   e ,  28   f  are opposite, power generation capacity can be increased. 
     Further, filtration substance capable of absorbing carbon dioxide can be placed inside the tower rack  20 . The filtration substance, sodium bicarbonate or potassium bicarbonate for example, absorbs carbon capture within air or exhaust. When air or exhaust is extracted into an internal space of the tower rack  20 , it is exhausted after filtering with the filtration substance, capable of reducing carbon dioxide content within air and exhausted by humans. Moreover, power generated by wind force can electrolyze sea water to produce sodium hydroxide, hydrogen and chlorine. The former can reduce carbon, hydrogen can be applied in fuel cell, and chlorine can be manufactured as industrial material to improve application. As shown in  FIG. 13 , the support axle  23  can also be disposed as tubular shape to form an inner tube and an outer tube of the tower rack  2  (elements, such as the upper axle flow blade  28   c , the induction and second induction stator magnetic fields  27 ,  27   a , the upper vertical axle blade  24   a  and the lower vertical axle blade  24   b , are omitted without showing). An axle flow fan  5  is disposed inside a top end of the support axle  23 . Several air outlets  50  communicating with inside of the tower rack  2  are disposed at an outer wall of the bottom end so that the axle flow fan  5  can bring cold air above the support axle  23  into the support axle  23 . Afterward cold air moves down via the inside of the support axle  23  and then flows out of the air outlet  50  and enters between the tower rack  2  and the support axle  23 , thereby increasing wind energy upwardly flowing from the bottom end of the tower rack  2 . 
     While the present invention has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.