JP2008106736A - Rotor blade apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotor blade apparatus with a good efficiency that can significantly enhance the self-starting capability and the number of revolutions to be attained by converting a retrograde region to a prograde region of a rotor blade to promote the revolutions of the rotor blade. <P>SOLUTION: The rotor blade apparatus includes a rotating rotor 3 having a rotatable rotating blade 6a receiving a fluid 2 around a substantially perpendicular blade rotating shaft 5, and a straightening vane 10 provided at an upstream side of the retrograde region 4 of the rotating blade 6a so that the rotating blade 6a produces a Karman vortex 2a in the retrograde region 4 that retrogrades with respect to an orientation of the fluid 2, wherein the straightening vane 10 and the blade rotating axis 5 of the rotating rotor 3 are arranged such that a rotating trajectory 62 of the rotating blade 6a moves along the retrograde portion 2b with respect to the orientation of the fluid 2 of the Karman vortex 2a produced by the straightening vane 10. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a rotary blade device including a rotary blade that receives a fluid such as wind or water around a blade rotation axis and rotates.

  Conventionally, for example, a propeller-type rotary blade device and a Darius-type rotary blade device are known as rotary blade devices including a rotary blade that receives a fluid such as wind or water around the blade rotation axis. Yes.

  The former propeller type rotor blade device has a disadvantage in that it requires a direction control device that changes the posture and directs the rotor blade device in the direction of the fluid. Since it is an antegrade area that runs forward, it has the advantages of relatively good self-starting properties and easy start-up even with a small flow rate. In addition, since the rotor blades move forward in the direction of the wind, the reaching rotational speed is also increased. As a result, most large-scale commercial wind power generation employs a three-blade propeller type windmill.

  20 and 21 are explanatory views showing an example of the latter Darrieus type rotary blade device, and FIG. 20 is a perspective view showing a schematic configuration of a single blade straight Darius type rotary blade device 191. FIG. 21 is a plan view showing a schematic configuration of the rotary blade device 191. In FIG. 21, B is a state in which the rotor blade 6 is in the forward region, C is a balanced stationary position of the rotor blade 6, and ranges A to B and BC are forward of the rotor blade 6. The areas C to A indicate the retrograde areas of the rotor blades 6, respectively.

  The rotary blade device 191 includes a rotary rotor 192 that rotates by receiving a fluid 2 that is wind, and a base 193 of the rotary rotor 192. The rotary rotor 192 includes a single rotary blade 195 that can receive and rotate the fluid 2 around a substantially vertical blade rotation shaft 194, a counterweight 196 of the rotary blade 195, and a shaft 197. 197 is rotatably supported by a rotary bearing 198 provided on the base 193 of the rotary rotor 192 and is configured to receive and rotate the fluid 2 around a vertical blade rotary shaft 194.

  As shown in the range of C to A in FIG. 21, the rotary blade device 191 includes a retrograde region 199 in which the fluid 2 tries to stop the rotation of the rotary blade 195, and thus exists in the track 195 a of the rotary blade 195. There are disadvantages in that it is inferior in terms of self-starting performance and ultimate rotational speed, such as trying to balance and stand still. On the other hand, this rotary blade device 191 has the charm inherent to the Darrieus type rotary blade device, such as not requiring a wind vane device, a simple and strong structure, and a simple generator layout.

  Therefore, in recent years, by adopting variable-speed high-speed rotor blades such as gyromill type wind turbines, or adopting a baffle plate that blocks the wind passing through the retrograde region in front of the wind turbines, Various techniques have been developed to overcome the disadvantages and improve the self-startability and the number of revolutions reached.

For example, in Patent Document 1, a wind guide plate that blocks the wind that attempts to pass through the retrograde region and guides the wind to the wind receiving region side is disposed facing the upstream side of the retrograde region, A vertical axis type wind turbine technology is disclosed in which the wind turbine resistance in the region is reduced, and at the same time, the wind force in the wind receiving region is improved to increase the rotational speed of the rotor.
JP 2003-42055 A

  However, even when a variable-speed high-speed rotary blade capable of pitch control such as a gyromill type wind turbine is used, if the retrograde region exists, the self-starting property and the achieved rotational speed are not sufficiently improved.

  Further, even in the technology of the vertical axis wind turbine disclosed in Patent Document 1 described above, the baffle plate only reduces the resistance of the wind turbine in the reverse region, and actively rotates the rotor blades in the reverse region. It did not work to promote. For this reason, there was a limit to the improvement of the self-starting property and the reached rotation speed.

  The present invention has been made in view of the above problems, and by converting the retrograde region of the rotor blade into the forward region and actively promoting the rotation of the rotor blade, the self-starting property and the reached rotational speed are remarkably improved. An object of the present invention is to provide an efficient rotor blade device that can be enhanced.

  In order to solve the above problems, the present invention provides a rotating rotor having a rotating blade that receives and rotates a fluid around a substantially vertical blade rotation axis, and a reverse region in which the rotating blade moves backward with respect to the direction of the fluid. A rectifying plate provided upstream of the retrograde region of the rotor blade so as to generate a Karman vortex, and the rectifier plate and the blade rotating shaft of the rotor of the rotor are formed by the Karman vortex generated by the rectifier plate. The rotary blade device is characterized in that a rotary orbit of the rotary blade is arranged along a portion that is reverse to the direction of the fluid.

  According to the present invention, since the rectifying plate and the blade rotation axis of the rotating rotor are arranged so that the rotation trajectory of the rotating blade is along the part of the Karman vortex generated by the rectifying plate and reversing the direction of the fluid, As a result of the Karman vortex accelerating the rotation of the rotor blades even in the retrograde region, the self-starting property is remarkably improved, and the rotating rotor can be started even at a small flow rate. Similarly, the Karman vortex promotes the rotation of the rotor blades, so that the ultimate rotational speed of the rotary rotor can be remarkably increased.

  Here, the current plate is preferably formed in an arc shape that curves toward the fluid.

  In this way, since the current plate is formed in an arc shape that curves toward the fluid, the Karman vortex can be generated and thrust can be applied to the rotor blades. Will be able to start. In addition, the reaching rotational speed of the rotary rotor can be further increased.

  Moreover, it is preferable that the said rotary blade is comprised by the straight Darius type by which the cross section was formed in the wing | blade shape.

  In this way, since the rotor blades are configured with a straight Darrieus type, it is possible to achieve a higher TSR (ratio of the peripheral speed of the rotor blades to the fluid speed) compared to conventional paddle types. As a result, the ultimate rotational speed of the rotary rotor can be further greatly increased.

  Or it is preferable that the said rotary blade is comprised by the paddle type | mold with which the cross section was formed in arc shape.

  In this way, since the rotor blade is configured as a paddle type, it is possible to increase the torque especially at the time of starting and improve the starting performance.

  The rotating rotor includes blade angle changing means capable of changing the mounting angle of the rotating blades in the rotating rotor, and blade angle control means capable of adjusting the mounting angle of the rotating blades changed by controlling the blade angle changing means. And are preferably provided.

  In this way, the blade angle control means can control the blade angle changing means to adjust the mounting angle of the rotary blade in the rotary rotor, so that the blade angle control means adjusts to the optimum angle according to the rotational speed of the rotary rotor. As a result, both the startability and the reached rotation speed can be further increased.

  In addition, the rotary rotor includes a blade holding portion that holds the rotary blade rotatably around the blade rotation shaft, and the blade holding portion is provided on the shaft-side hinge portion provided on the blade rotation shaft side and the rotor blade side. It is preferable that the blade is hinged so that the rotor blade can be folded in the vicinity of the blade rotation axis.

  In this way, in the blade holding portion, the shaft-side hinge portion provided on the blade rotation shaft side and the blade-side hinge portion provided on the rotor blade side can be bent to fold the rotor blade near the blade rotation shaft. As a result, it is possible to realize a rotary blade device that is advantageous for packaging and transportation at the time of shipment.

  In addition, the rotor device includes a rotor support portion that is rotatable around a support portion rotation shaft provided substantially in parallel with the blade rotation shaft in a state where the current plate and the blade rotation shaft of the rotary rotor are held. The rotor support portion of the rotor support portion is supported by the rotor so that the force of the fluid acting on the movable portion around the support portion rotation axis is balanced and the posture of the rotor support portion with respect to the direction of the fluid is substantially constant. The rotor support part is provided with a portion of the rotor support part in a state where the posture of the rotor support part with respect to the fluid is constant in this manner, and It is preferable to hold the rectifying plate and the blade rotation shaft of the rotary rotor in such an arrangement as to be generated.

  In this way, the support unit rotation shaft is connected to the rotor support unit so that the force of the fluid acting on the movable unit around the support unit rotation axis is balanced and the posture of the rotor support unit with respect to the direction of the fluid is substantially constant. Since it is provided at the portion near the current plate, the rotor apparatus can always be in a fixed posture in accordance with the change in the direction of the fluid. In addition, in such a state that the posture of the rotor support part with respect to the fluid is constant, the rotor support part is arranged such that Karman vortices are generated in the retrograde region of the rotor blade, and the rotor support part is the blade of the rotor plate and the rotor rotor. Since the rotating shaft is held, the high self-starting property and the ultimate rotational speed can be maintained stably at all times.

  Further, in this rotary blade device, the rotor support portion holds two blade rotation shafts of the rotary rotor with respect to one rectifying plate, and the rotor support portion balances the force of fluid. In such a state that the rectifying plate generates Karman vortices in the reverse regions of the two rotating rotors in a state where the posture of the rotor support portion with respect to the fluid is constant, the blade rotation of the rectifying plate and the respective rotating rotors It is preferable to hold the shaft.

  In this way, since only one baffle plate needs to be installed for two rotating rotors, members and spaces can be omitted. As a result, an inexpensive rotating blade device that is compact and has high fluid utilization efficiency. Can be realized. Moreover, since two rotary rotors can be symmetrically arranged with respect to one rectifying plate, a stable rotary blade device with less vibration can be obtained.

  Here, the two rotary rotors are arranged so that the retrograde regions of the respective rotary blades overlap, and the rotor support portion is in a state where the force of the fluid is balanced and the posture of the rotor support portion with respect to the fluid is constant The rectifying plates and the blade rotation shafts of the respective rotating rotors are held in such an arrangement that the rectifying plates generate Karman vortices in the reverse regions of the two rotating rotors. In the meantime, it is preferable to further provide a synchronization mechanism in which the respective rotary blades alternately enter the overlapping retrograde regions with a phase shifted.

  In this way, the reverse regions of the rotary blades of the two rotary rotors can overlap each other, so that the apparatus can be made more compact and the space utilization efficiency can be further increased. Further, since the device can be made more compact, the durability of the rotor blade device can be further increased even with a large fluid load.

  In addition, the synchronous mechanism causes each rotor blade to enter the reverse region where it overlaps, shifting the phase alternately so that it can rotate to cancel out vibrations, resulting in a stable rotor device with less vibration. Can do.

  Moreover, it is preferable that the rotor support part is further provided with a tail that stabilizes the posture of the rotor support part with respect to the fluid.

  In this way, the tail support that stabilizes the posture of the rotor support portion with respect to the fluid is further provided in the rotor support portion, so that the posture change ability and the stability with respect to the direction of the fluid can be further improved. .

  As described above, according to the present invention, the Karman vortex by the rectifying plate promotes the rotation of the rotor blade even in the reverse region of the rotor blade. There is a remarkable effect that it can be activated.

  Similarly, since the Karman vortex by the current plate promotes the rotation of the rotor blades, there is a remarkable effect that the number of revolutions reached by the rotating rotor can be remarkably increased.

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing a schematic configuration of a rotary blade device 1 according to the first embodiment of the present invention, and FIG. 2 is a plan view showing a schematic configuration of the rotary blade device 1.

  As shown in FIG. 1 and FIG. 2, the rotor blade device 1 according to the first embodiment is adopted for small wind power generation, and receives a fluid 2 that is wind and rotates with a rotating rotor 3. A rectifying plate 10 provided on the upstream side of the retrograde region 4 (FIG. 2) of the rotating rotor 3, a base 11 of the rotating rotor 3, and a base 12 of the rectifying plate 10 are provided.

  The rotary rotor 3 includes a single rotary blade 6a that can rotate by receiving the fluid 2 around a substantially vertical blade rotation shaft 5, a counterweight 7 of the rotary blade 6a, and a rotary blade 6a and a counterweight 7. There are three arms 8a, 8b, 8c that connect the rotor blade 6a and the counterweight 7 so as to rotate in a state of facing each other, and a shaft 9 provided so as to penetrate the arms 8a, 8b, 8c. The shaft 9 is rotatably supported by a rotary bearing 13 provided on the base 11 of the rotary rotor 3 and is connected to a generator 14 housed in the base 11 of the rotary rotor 3.

  Here, the rotary blade 6a is composed of a lightweight metal straight Darius type blade formed in a long plate shape having an airfoil in cross section.

  The counterweight 7 is a member for balancing the blade rotation shaft 5 so as to be the center of rotation of the rotary rotor 3, and is composed of a spherical metal member. It is attached to the arms 8a, 8b, 8c at a position close to the rotating shaft 5.

  The rotating rotor 3 including the rotating blade 6a, the counterweight 7, the arms 8a, 8b, 8c and the shaft 9 which are integrated as a whole is rotatably supported by the base 11 via the rotating bearing 13. Then, by receiving the fluid 2 and rotating around the blade rotation shaft 5, the generator 14 can be driven to generate electric power.

  The rectifying plate 10 is a plate-shaped shielding member provided on the upstream side of the retrograde region 4 of the rotor blade 6a, and passes through the retrograde region 4 (FIG. 2) in which the rotor blade 6a is retrograde with respect to the direction of the fluid 2. The resistance of the rotor blade device in the retrograde region 4 is reduced by blocking the fluid 2 to be tried. The rectifying plate 10 is formed in an arc shape that curves so as to protrude toward the fluid 2 so as to generate the Karman vortex 2a effectively in the retrograde region 4 in particular.

  The rectifying plate 10 and the blade rotating shaft 5 of the rotary rotor 3 are generally along the portion 2b of the Karman vortex 2a generated by the rectifying plate 10 and reversing the portion 2b of the rotary blade 6a. Are arranged as follows.

  Next, with reference to FIG. 2, an operation of the rotary blade device 1 according to the first embodiment of the present invention will be described.

  As shown in FIG. 2, when the rotary blade 6 a of the rotary rotor 3 receives the fluid 2, the rotary rotor 3 rotates around a generally vertical blade rotation axis 5.

  Further, the rectifying plate 10 blocks the fluid 2 that the rotor blades 6a are going to pass through the retrograde region 4 that is retrograde with respect to the direction of the fluid 2, thereby reducing the resistance of the rotary blade device in the retrograde region 4 and the retrograde region 4. To generate Karman vortex 2a.

  Then, the rotation of the rotary blade 6a is promoted in the portion 2b that runs backward with respect to the direction of the fluid 2 of the Karman vortex 2a generated by the rectifying plate 10.

  As described above, according to the rotary blade device 1 according to the first embodiment of the present invention, the rotary blade 6a is provided on the portion 2b of the Karman vortex 2a generated by the rectifying plate 10 and reversing the direction of the fluid 2. Since the rectifying plate 10 and the blade rotating shaft 5 of the rotating rotor 3 are arranged so as to follow the rotating orbit 6e, the Karman vortex 2a promotes the rotation of the rotating blade 6a even in the retrograde region 4. The startability is remarkably improved, and the rotating rotor 3 can be started even with a small flow rate. Similarly, the Karman vortex 2a promotes the rotation of the rotary blade 6a, so that the ultimate rotational speed of the rotary rotor 3 can be remarkably increased.

  Further, since the rectifying plate 10 is formed in an arc shape curved toward the fluid 2, the Karman vortex 2a can be generated and a large thrust can be applied to the rotor blade 6a. The rotor 3 can be activated. In addition, the reaching rotational speed of the rotary rotor 3 can be further increased.

  Further, since the rotary blade 6a is configured as a straight Darrieus type, it is possible to realize a high TSR (ratio of the peripheral speed of the rotary blade 6a to the speed of the fluid 2). As a result, the ultimate rotational speed of the rotary rotor 3 can be further greatly increased.

  Next, a rotary blade device 21 according to a second embodiment of the present invention will be described with reference to FIGS. 3 and 4. FIG. 3 is a perspective view showing a schematic configuration of the rotary blade device 21 according to the second embodiment of the present invention, and FIG. 4 is a plan view showing the operation of the rotary blade device 21. In the following description, members similar to those of the rotary blade device 1 according to the first embodiment of the present invention are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 3 and 4, the rotary blade device 21 according to the embodiment of the present invention includes rotor support portions 22 a and 22 b that hold the rectifying plate 10 and the blade rotation shaft 5 of the rotary rotor 3. The rotor support portions 22a and 22b are substantially connected to the blade rotation shaft via the rotary bearing 24 provided on the base 23 in such a state that the rectifying plate 10 and the blade rotation shaft 5 of the rotary rotor 3 are held in this manner. It is supported so as to be rotatable around a support portion rotation shaft 25 provided in parallel or vertically.

  In the case of the rotary blade device 21 according to the second embodiment, the generator 26 is provided on the lower side of the rectifying plate 10 and on the rotor support portion 22b. The rotational force of the rotating rotor 3 is applied to the generator 26 by a driving force transmission mechanism such as a belt or a chain provided between the shaft (not shown) of the generator 26 and the shaft 9 of the rotating rotor 3. It is possible to communicate.

  Here, the support portion rotating shaft 25 of the rotor support portions 22a and 22b is in the direction of the fluid 2 because the force of the fluid 2 acting on the movable portion around the support portion rotating shaft 25 such as the rectifying plate 10 and the rotating rotor 3 is balanced. The rotor support portions 22a and 22b are provided at portions of the rotor support portions 22a and 22b near the current plate 10 so that the postures of the rotor support portions 22a and 22b are substantially constant. The generator 26 also functions as a counterweight for the rotating rotor 3.

  As described above, the rotating blade device 21 rotates in such a manner that the drag of the fluid 2 of the rectifying plate 10 and the drag of the rotating rotary rotor 3 and the weight of each part are balanced around the support unit rotation shaft 25. The entire wing device follows the change in the direction of the fluid 2.

  The rotor support portions 22a and 22b cause the rectifying plate 10 to generate the Karman vortex 2a in the retrograde region 4 of the rotor blade 6a in such a state that the postures of the rotor support portions 22a and 22b with respect to the fluid 2 are constant. In such an arrangement, the current plate 10 and the blade rotation shaft 5 of the rotary rotor 3 are held.

  As described above, according to the rotary blade device 21 according to the second embodiment of the present invention, the force of the fluid 2 acting on the movable part around the support part rotation shaft 25 is balanced, and the rotor with respect to the direction of the fluid 2 Since the support portion rotating shaft 25 is provided in the rotor support portions 22a and 22b near the rectifying plate 10 so that the postures of the support portions 22a and 22b are substantially constant, the direction of the fluid 2 changes. Accordingly, the rotary blade device 1 can always be in a fixed posture. In addition, the rotor support portion is arranged so that the rectifying plate 10 generates the Karman vortex 2a in the reverse region 4 of the rotor blade 6a in a state where the postures of the rotor support portions 22a and 22b with respect to the fluid 2 are constant. Since 22a and 22b hold | maintain the baffle plate 10 and the blade | wing rotating shaft 5 of the rotary rotor 3, it becomes possible to always maintain the high self-starting property and the ultimate rotational speed stably.

  Next, with reference to FIG. 5, a rotary blade device 31 according to a third embodiment of the present invention will be described. FIG. 5 is a perspective view showing a schematic configuration of a rotary blade device 31 according to the third embodiment of the present invention.

  As shown in FIG. 5, in the rotary blade device 31 according to the third embodiment of the present invention, another rotor blade 6 b is provided on the rotor support portions 22 a and 22 b instead of the counterweight 7, and It constitutes a wing straight Darrieus type rotor blade device. The rotary blade device 31 according to the third embodiment has the same configuration and operation as those of the rotary blade device 21 according to the second embodiment.

  As described above, according to the rotary blade device 31 according to the third embodiment, the two blade straight Darius type is used, so that there is less vibration compared to the rotary blade device 21 according to the second embodiment. Thus, a stable rotor blade device can be realized.

  Next, with reference to FIGS. 6-8, the rotary blade apparatus 41 which concerns on the 4th Embodiment of this invention is demonstrated. FIG. 6 is a perspective view showing a schematic configuration of a rotary blade device 41 according to the fourth embodiment of the present invention, and FIG. 7 is a plan view showing a schematic configuration of the rotary blade device 41. FIG. 8 is a conceptual diagram showing a schematic configuration of the synchronization mechanism 43 of the rotary blade device 41.

  The rotor blade device 41 according to the fourth embodiment of the present invention can be applied to any of small, medium, and large wind power generation. As shown in FIGS. The rotor support portions 42 a and 42 b configured in an X shape provided for the two hold the blade rotation shafts 5 of the two rotary rotors 3.

  Here, as shown in FIG. 7, the rotor support portions 42 a and 42 b are configured so that the flow straightening plate 10 is in a state where the forces of the fluid 2 are balanced and the postures of the rotor support portions 42 a and 42 b with respect to the fluid 2 are constant. The rectifying plate 10 and the blade rotation shaft 5 of each rotary rotor 3 are held in such an arrangement that the Karman vortex 2 a is generated in the reverse region 4 of the two rotary rotors 3.

  In particular, in the rotary blade device 41, the two rotary rotors 3 are arranged so that the retrograde regions 4 of the rotary blades 6a overlap with each other, as shown in FIG. Is further provided with a synchronizing mechanism 43 for alternately intruding the rotating blades 6a, 6b into the overlapped reverse region 4.

  The synchronization mechanism 43 includes a pulley 9a provided at an appropriate position of the shaft 9 of the rotary rotor 3, a pulley 26b provided on the shaft 26a of the generator 26, and timing belts 27a and 27b that connect the pulleys 9a and 26b. And one of the timing belts 27a is configured to cross each other, so that each of the rotor blades 6a and 6b rotates in reverse in synchronization with maintaining a phase difference of about 90 degrees. It is comprised so that it can penetrate | invade alternately.

  As described above, according to the rotary blade device 41 according to the fourth embodiment of the present invention, it is only necessary to install one rectifying plate 10 for the two rotary rotors 3. As a result of being able to be omitted, it is possible to realize an inexpensive rotary blade device that is compact and has high utilization efficiency of the fluid 2. In addition, since the two rotary rotors 3 can be symmetrically arranged with respect to one rectifying plate 10, a stable rotary blade device with little vibration can be obtained.

  Further, since the retrograde regions 4 of the rotary blades 6a and 6b of the two rotary rotors 3 overlap, the apparatus can be made more compact and the space utilization efficiency can be further increased. In addition, since the apparatus can be made more compact, the durability of the rotor apparatus can be further increased even with a large load of fluid 2.

  Further, since the synchronous mechanism 43 alternately intrudes the rotating blades 6a and 6b into the overlapping retrograde regions 4 by shifting the phase, the rotation can be performed so as to cancel out the vibrations. As a result, stable rotation with less vibrations can be achieved. Can be a wing device.

  Next, with reference to FIG. 9, the rotary blade apparatus 51 which concerns on the 5th Embodiment of this invention is demonstrated. FIG. 9 is a perspective view showing a schematic configuration of a rotary blade device 51 according to the fifth embodiment of the present invention.

  As shown in FIG. 9, in the rotary blade device 51 according to the fifth embodiment of the present invention, the tail blade 52 that stabilizes the posture of the rotor support portions 22a and 22b with respect to the fluid 2 extends from the rotor support portions 22a and 22b. The rotor support portions 22a and 22b are provided via the extended portions 53a and 53b.

  Further, in the rotor blade device 31, a total of four rotor blades 6a, 6b, 6c, and 6d are provided on the rotor support portions 22a and 22b to constitute a four-blade straight Darius type rotor device.

  Thus, according to the rotor blade device 51 according to the fifth embodiment of the present invention, the tail blades 52 that stabilize the posture of the rotor support portions 22a and 22b with respect to the fluid 2 are further provided on the rotor support portions 22a and 22b. Therefore, the posture changing ability and the stability with respect to the direction of the fluid 2 can be further improved.

  Further, by adopting the four-blade straight Darius type, it is possible to realize a stable rotor blade device with less vibration compared to the two-blade straight Darius type.

  FIG. 10 is a perspective view showing a schematic configuration of a rotor blade device 61 according to the sixth embodiment of the present invention, and FIG. 11 shows a rotor blade device 61 according to the sixth embodiment of the present invention. It is a top view which shows a schematic structure.

  As shown in FIG. 10 and FIG. 11, in the rotary blade device 61 according to the sixth embodiment of the present invention, the rotary blades 66a, 66b, 66c, 66d are paddle type having a cross section formed in an arc shape. It is configured.

  As described above, according to the rotary blade device 61 according to the sixth embodiment of the present invention, the rotary blades 66a, 66b, 66c, and 66d are configured in the paddle type, and therefore, during startup and during normal operation, In both cases, an ultra-high torque low-rotating wind turbine capable of obtaining a particularly large torque can be obtained.

  12-14 is a top view which shows the schematic structure of the rotary blade apparatus 71 which concerns on the 7th Embodiment of this invention, and FIG. 12 shows the state when the rotation speed of the rotary rotor 73 is low. 13 shows a state when the rotational speed of the rotary rotor 73 is high, and FIG. 14 shows a state when the rotational speed of the rotary rotor 73 is the highest.

  As shown in FIGS. 12-14, in the rotary blade apparatus 71 which concerns on the 7th Embodiment of this invention, the rotary rotor 73 changes the attachment angle of the rotary blades 76a, 76b, 76c, 76d in the rotary rotor 73. As possible blade angle changing means 72, hinge shafts 75a, 75b, 75c are provided between brackets 76e, 76f, 76g, 76h provided on the rotary blades 76a, 76b, 76c, 76d and the arms 78a, 78b, 78c, 78d. , 75d.

  The rotary rotor 73 has brackets 76e, 76f, 76g provided on the rotary blades 76a, 76b, 76c, 76d as blade angle control means 77 capable of adjusting the mounting angle of the rotary blades 76a, 76b, 76c, 76d. An unillustrated urging means and eccentric centroid portions 79a, 79b, 79c, 79d provided on the rotor blades 76a, 76b, 76c, 76d are provided between 76h and the arms 78a, 78b, 78c, 78d. .

  Here, the urging means rotates relative to the arms 78a, 78b, 78c, 78d so that the rotor blades 76a, 76b, 76c, 76d are along the longitudinal direction of the arms 78a, 78b, 78c, 78d as shown in FIG. The wings 76a, 76b, 76c, and 76d are energized.

  The eccentric gravity center portions 79a, 79b, 79c, and 79d are the gravity center portions of the rotary blades 76a, 76b, 76c, and 76d. The eccentric gravity center portions 79a, 79b, 79c, and 79d are the rotary blades 76a, 76b, 76c, and In 76d, it is provided at a position shifted from the hinge shafts 75a, 75b, 75c, 75d.

  The eccentric gravity center portions 79a, 79b, 79c, and 79d are arranged so that the longitudinal direction of the rotating blades 76a, 76b, 76c, and 76d becomes parallel to the tangential direction of the rotating circle as shown in FIG. 76a, 76b, 76c and 76d are urged by centrifugal force. Therefore, the rotary blade device 71 is easy to start by receiving a fluid over a large area like a paddle type rotary blade at the time of startup or in a state where the rotational speed of the rotary rotor 73 is low, and at the time of startup or the rotary rotor. In a state where the rotational speed of 73 is high, the ultimate rotational speed can be increased like a Darrieus-type rotor blade.

  Further, the eccentric gravity center portions 79a, 79b, 79c, 79d are displaced to the outermost rotation trajectory by a centrifugal force as shown in FIG. The longitudinal direction of 76d approaches the radial direction of the rotating circle. In this state, the paddle type rotor blades are reversed 180 degrees. As a result, the rotor blades 76a, 76b, 76c, and 76d act to brake the rotation of the rotor 73.

  Thus, according to the rotary blade device 71 according to the seventh embodiment of the present invention, the blade angle control unit 77 controls the blade angle changing unit 72 to rotate the rotary blades 76a, 76b, 76c in the rotary rotor 73. Since the attachment angle of 76d can be adjusted, it is possible to adjust to an optimum angle according to the rotational speed of the rotary rotor 73. As a result, both the startability and the ultimate rotational speed can be further increased.

  Further, in a state where the rotational speed is further increased, the rotor blades 76a, 76b, 76c, and 76d brake the rotation, so that the rotation of the rotating rotor 73 can be prevented and the rotation can be generated when the rotation becomes abnormally high. This makes it possible to prevent damage to the device.

  FIG. 15 is a perspective view showing a schematic configuration of a rotor blade device 81 according to the eighth embodiment of the present invention, and FIG. 16 shows a rotor blade device 81 according to the eighth embodiment of the present invention. It is a side view showing an outline composition.

  As shown in FIGS. 15 and 16, in the rotary blade device 81 according to the eighth embodiment of the present invention, the rotary rotor 83 can rotate the rotary blades 86 a, 86 b, 86 c around the blade rotation axis 5. The blade holding portions 88a, 88b, 88c are provided on the blade rotating shaft 5 side, and the blade-side holding portions 88a, 88b, 88c are provided with shaft-side hinge portions 85a, 85b, 85c provided on the blade rotating shaft 5 side. , 86b, 86c, and the blade-side hinges 84a, 84b, 84c provided on the side are bent so that the rotary blades 86a, 86b, 86c can be folded in the vicinity of the blade rotation shaft.

  Thus, according to the rotary blade device 51 according to the eighth embodiment of the present invention, in the blade holding portions 88a, 88b, 88c, the shaft-side hinge portions 85a, 85b, 85c provided on the blade rotation shaft 5 side. And the blade-side hinges 84a, 84b, 84c provided on the rotor blades 86a, 86b, 86c side, and the rotor blades 86a, 86b, 86c can be folded in the vicinity of the blade rotating shaft 5, In addition, it is possible to realize the rotary blade device 81 that is advantageous for conveyance.

  The above-described embodiment is merely a preferred specific example of the present invention, and the present invention is not limited to the above-described embodiment.

  For example, the number of rotating blades 6a of the rotating rotor 3 is not limited to 1 to 4. Regarding the number of rotor blades 6a, various design changes can be made due to the efficiency of the rotor device and other mechanical requirements.

  Further, the rotary blade 6a is not limited to a light metal straight Darius type blade formed in a long plate shape having a blade shape in cross section. Various design changes, such as a general Darrieus type and a cross-sectional shape, can be made according to the application of the rotary blade device.

  Further, the driving force transmission mechanism that transmits the rotational force of the rotating rotor 3 to the generator 26 is not limited to a mechanism such as a belt or a chain. Various driving force transmission mechanisms such as gears can be used.

  Further, the synchronization mechanism 43 is not limited to the one provided with the timing belts 27a and 27b that connect the pulley 9a provided on the shaft 9 of the rotating rotor 6 and the pulley 26b provided on the shaft 26a of the generator 26. . As long as each rotor blade 6a, 6b is configured to be able to reversely rotate in synchronization while maintaining a phase difference of about 90 degrees and to alternately enter the reverse region 4, various synchronization mechanisms can be used. It can be adopted.

  Further, in the rotary blade device 71 according to the seventh embodiment of the present invention, the blade angle changing means 72 is limited to those having one hinge shaft 75a, 75b, 75c, 75d as shown in FIGS. Not. Various blade angle changing means can be employed as long as the mechanism can change the mounting angle of the rotary blades 76a, 76b, 76c, and 76d in the rotary rotor 73. Further, the blade angle control means 77 is not limited to the one provided with the biasing means (not shown) and the eccentric gravity center portions 79a, 79b, 79c, 79d. If the mechanism can adjust the mounting angle of the rotor blades 76a, 76b, 76c, and 76d, there are various configurations such as measuring the number of rotations and adjusting the mounting angle of the rotor blades 76a, 76b, 76c, and 76d with a link mechanism. The blade angle control means can be employed.

  Further, the rotary blade devices 1, 21, 31, 41, 51, 61, 71, 81 according to the present embodiment are not limited to those rotating around the substantially vertical blade rotation axis 5. For example, FIG. 17 is a perspective view showing a schematic configuration of a rotor blade device 91 according to the ninth embodiment of the present invention, and FIG. 18 shows a rotor blade device 91 according to the ninth embodiment of the present invention. It is a side view which shows a schematic structure.

  As shown in FIG. 18, in the rotary blade device 91 according to the ninth embodiment of the present invention, the rotary rotor 93 can rotate by receiving wind as a fluid 2 around a substantially horizontal blade rotation axis 95 and rotating a total of four. Two rotor blades 96a, 96b, 96c, 96d are provided on the rotor support portions 92a, 92b via three arms 98a, 98b, 98c, 98d, respectively, and constitute a four-blade straight Darius type rotor device. ing.

  Similarly to the rotary blade device 51 according to the fifth embodiment, a generator 94 is provided on the back side of the rectifying plate 90, and the illustration is omitted provided between the generator 94 and the shaft 99 of the rotary rotor 93. The driving force transmission mechanism is configured to transmit the rotational force of the rotary rotor 93 to the generator 94. Further, the drag of the fluid 2 and the weight of each part are balanced about the support part rotation shaft 97 so that the entire rotary blade device 91 follows the change in the direction of the fluid 2.

  Thus, according to the rotary blade device 91 according to the ninth embodiment of the present invention, as with the rotary blade devices 21 and 31, the power generation efficiency that the self-starting property is good and the ultimate rotational speed of the rotary rotor is high. A good wind power generator can be realized.

  Furthermore, the rotary blade devices 1, 21, 31, 41, 51, 61, 71, 81, 91 according to the present embodiment are not limited to wind turbines that receive wind as the fluid 2 and rotate. Each of the rotor blade devices 1, 21, 31, 41, 51, 61, 71, 81, 91 according to the present embodiment is, for example, a hydroelectric generator installed in water such as a river or the ocean, The present invention can also be applied to a hydroelectric generator having a rotating rotor that can rotate in response to a river flow or tidal current as a fluid 2 around a horizontal or horizontal blade rotation axis.

  Further, the rotary rotor 6 is not necessarily limited to one type in the rotary rotor 3, and various rotary blades can be provided in the single rotary rotor 3. For example, FIG. 19 is a perspective view showing a schematic configuration of a rotary blade device 101 according to the tenth embodiment of the present invention. As shown in FIG. 19, in the rotary blade device 101 according to the tenth embodiment of the present invention, the rotary rotor 103 has different types of rotations of a straight Darrieus type rotary blade 106a and a paddle type rotary blade 106b. It is configured as a hybrid type with mixed wings.

  Thus, according to the rotating blade device 101 according to the tenth embodiment of the present invention, the rotating rotor 103 has a relatively high TSR that is the ratio of the peripheral speed of the rotating blade to the speed of the fluid (TSR: 3 to 3). 4) A hybrid type in which a straight Darrieus-type rotor blade 106a having a high reached rotational speed and a paddle-type rotor blade 106b having a relatively low TSR (TSR: about 0.7) but a large torque at startup are mixed. Therefore, it is possible to realize a rotary blade device that is excellent in the balance between the reached rotational speed and the torque at the time of startup.

  In addition, it goes without saying that various design changes are possible within the scope of the claims of the present invention.

It is a perspective view which shows the structure of the outline of the rotary blade apparatus which concerns on the 1st Embodiment of this invention. It is a top view which shows the structure of the outline of the rotary blade apparatus which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the structure of the outline of the rotary blade apparatus which concerns on the 2nd Embodiment of this invention. It is a top view which shows the effect | action of the rotary blade apparatus which concerns on the 2nd Embodiment of this invention. It is a perspective view which shows the structure of the outline of the rotary blade apparatus which concerns on the 3rd Embodiment of this invention. It is a perspective view which shows the structure of the outline of the rotary blade apparatus which concerns on the 4th Embodiment of this invention. It is a top view which shows the schematic structure of the rotary blade apparatus which concerns on the 4th Embodiment of this invention. It is a conceptual diagram which shows the structure of the outline of the synchronous mechanism of the rotary blade apparatus which concerns on the 4th Embodiment of this invention. It is a perspective view which shows the structure of the outline of the rotary blade apparatus which concerns on the 5th Embodiment of this invention. It is a perspective view which shows the structure of the outline of the rotary blade apparatus which concerns on the 6th Embodiment of this invention. It is a top view which shows the structure of the outline of the rotary blade apparatus which concerns on the 6th Embodiment of this invention. It is a top view which shows the schematic structure of the rotary blade apparatus which concerns on the 7th Embodiment of this invention, and has shown the state when the rotation speed of a rotary rotor is low. It is a top view which shows the schematic structure of the rotary blade apparatus which concerns on the 7th Embodiment of this invention, and has shown the state when the rotation speed of a rotary rotor is high. It is a top view which shows the schematic structure of the rotary blade apparatus which concerns on the 7th Embodiment of this invention, and has shown the state when the rotation speed of a rotary rotor is the highest. It is a perspective view which shows the structure of the outline of the rotary blade apparatus which concerns on the 8th Embodiment of this invention. It is a side view which shows the structure of the outline of the rotary blade apparatus which concerns on the 8th Embodiment of this invention. It is a perspective view which shows the schematic structure of the rotary blade apparatus which concerns on the 9th Embodiment of this invention. It is a side view which shows the structure of the outline of the rotary blade apparatus which concerns on the 9th Embodiment of this invention. It is a side view which shows the structure of the outline of the rotary blade apparatus which concerns on the 10th Embodiment of this invention. It is a perspective view which shows the general | schematic structure of the conventional single blade | wing straight Darius type rotary blade apparatus. It is a top view which shows the general | schematic structure of the conventional single blade straight Darius type rotary blade apparatus, B is a state in which a rotary blade exists in an antegrade area | region, C is a balance stationary position of a rotary blade, A ~ The range of B and B to C indicates the forward region of the rotor blade, and the range of C to A indicates the retrograde region of the rotor blade.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotating blade apparatus 2a Karman vortex 3 Rotating rotor 4 Reverse region 5 Blade rotating shafts 6a, 6b, 6c, 6d Rotating blade 6e Rotating trajectory 10 Rectifier plates 22a, 22b, 42a, 42b Rotor support portion 25 Support portion rotation shaft 43 Synchronization mechanism 52 Tail blade 72 Blade angle changing means 77 Blade angle control means 84a, 84b, 84c Blade side hinge portions 85a, 85b, 85c Shaft side hinge portions 88a, 88b, 88c Blade holding portion

Claims (10)

A rotating rotor having rotating blades that receive and rotate fluid around the blade rotation axis;
A rectifying plate provided on the upstream side of the reverse region of the rotary blade so as to generate Karman vortices in the reverse region where the rotary blade is reverse to the direction of the fluid;
With
The rectifying plate and the blade rotating shaft of the rotating rotor are arranged such that the rotary orbit of the rotating wing is along a portion of the Karman vortex generated by the rectifying plate that is reverse to the direction of the fluid. Rotating wing device.   The rotor blade device according to claim 1, wherein the current plate is formed in an arc shape that curves toward the fluid.   The rotary blade device according to any one of claims 1 and 2, wherein the rotary blade is configured as a straight Darius type whose cross section is formed in a blade shape.   The rotary blade device according to any one of claims 1 and 2, wherein the rotary blade is configured as a paddle type whose cross section is formed in an arc shape. The rotating rotor includes blade angle changing means capable of changing the mounting angle of the rotating blade in the rotating rotor,
Blade angle control means capable of adjusting the mounting angle of the rotor blade changed by controlling the blade angle changing means;
The rotary blade device according to any one of claims 1 to 4, further comprising: The rotary rotor includes a blade holding unit that holds the rotary blade rotatably about the blade rotation axis,
This blade holding part is configured to be able to fold the rotating blade near the blade rotating shaft by bending the shaft side hinge portion provided on the blade rotating shaft side and the blade side hinge portion provided on the rotating blade side. The rotary blade device according to any one of claims 1 to 5, wherein the rotary blade device is characterized in that: In a state where the rectifying plate and the blade rotation shaft of the rotary rotor are held, a rotor support portion that is rotatable around a support portion rotation shaft provided substantially in parallel with the blade rotation shaft,
The rotation axis of the rotor support part of the rotor support part is such that the force of the fluid acting on the movable part around the rotation axis of the support part is balanced so that the posture of the rotor support part with respect to the direction of the fluid is substantially constant. It is provided near the current plate,
The rotor support portion is arranged in such a manner that the current plate generates a Karman vortex in the retrograde region of the rotor blade in a state where the posture of the rotor support portion with respect to the fluid is constant as described above. The rotary blade device according to any one of claims 1 to 6, wherein the rotary shaft of the rotary blade is held. The rotor support part holds the blade rotation shafts of the two rotating rotors with respect to one rectifying plate,
The rotor support portion is arranged so that the rectifying plate generates Karman vortices in the retrograde regions of the two rotary rotors in a state where the force of the fluid balances and the posture of the rotor support portion with respect to the fluid becomes constant. The rotary blade device according to claim 7, wherein the current plate and the blade rotation shaft of each rotary rotor are held. The two rotating rotors are arranged so that the reverse regions of the respective rotating blades overlap,
The rotor support portion is arranged so that the rectifying plate generates Karman vortices in the retrograde regions of the two rotary rotors in a state where the force of the fluid balances and the posture of the rotor support portion with respect to the fluid becomes constant. , Holding the current plate and the blade rotation shaft of each rotary rotor,
9. The rotary blade according to claim 8, further comprising a synchronization mechanism between the two rotary rotors, wherein the rotary blades alternately enter the overlapping retrograde regions with a phase shift. apparatus.   The rotor blade device according to any one of claims 7 to 9, wherein the rotor support portion is further provided with a tail blade that stabilizes the posture of the rotor support portion with respect to the fluid.

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