Power generator

Abstract

Provided is a power generator capable of converting a small rotational driving force into electric power with a simple configuration. This power generator 1 comprises: a rotary shaft 1A; a rotor 2 which rotates around the rotary shaft 1A and has rotary magnetic bodies 2A-2D at an outer circumferential end part; a wall surface body 3 in which wall surface magnetic bodies 3A-3D having the same polarity as the rotary magnetic bodies 2A-2D are arranged along a rotation direction R of the rotor 2, and which has divided wall surfaces 3AA-3DD in which a repulsive force between the rotary magnetic bodies 2A-2D and the wall surface magnetic bodies 3A-3D becomes smaller from an upstream side toward a downstream side in the rotation direction R; and a coil body 4 having induction coils 4A-4D which are arranged upstream in the rotation direction of the divided wall surfaces 3AA-3DD on the wall surface body 3 and which generate electromotive force due to electromagnetic induction caused by the rotary magnetic bodies 2A-2D.

Description

generator

[0001] The present technology relates to a generator that utilizes the repulsive force between like poles of a magnetic material.

[0002] Patent Document 1 discloses a rotation assist mechanism that includes a variable magnetic section having a pair of magnetic bodies with opposite poles arranged opposite to each other, a magnetic body drive section that changes the distance between the pair of magnetic bodies at a predetermined cycle as the rear wheel rotates, a shielding section that has a pair of magnetic surfaces that have the same polarity as the magnetic poles of the pair of magnetic bodies, and a shielding drive section that moves the shielding section in between the pair of magnetic bodies when the distance between the pair of magnetic bodies is shortened in accordance with the predetermined cycle, and moves the shielding section out from between the pair of magnetic bodies when the distance between the pair of magnetic bodies is extended.

[0003] However, in the technology of Patent Document 1, it is difficult to control the timing of the shield driving unit that moves the shielding portion between the pair of magnetic bodies and the shield driving unit has a complex mechanism.

[0004] JP 2017-160985 A

[0005] The present technology has been proposed in view of the above-described conventional situation, and provides a generator that can convert a small rotational driving force into electric power with a simple configuration.

[0006] As a result of intensive research, the present inventors have found that the above object can be achieved by the following means, and have completed the present technology.

[0007] [1] A generator comprising: a rotating shaft; a rotor that rotates around the rotating shaft and has a rotating magnetic body at its outer peripheral end; a wall body having divided wall surfaces on which wall magnetic bodies of the same polarity as the rotating magnetic body are arranged along the rotation direction of the rotor, and in which the repulsive force between the rotating magnetic body and the wall magnetic body decreases from upstream to downstream in the rotation direction; and a coil body having an induction coil that is arranged upstream of the divided wall surfaces of the wall body in the rotation direction and generates an electromotive force by electromagnetic induction by the rotating magnetic body. [2] The generator according to [1], comprising: a second rotor that rotates about the rotation axis and has a second rotating magnetic body at its outer circumferential end; a second wall body that has a dividing wall surface in which second wall magnetic bodies of the same polarity as the second rotating magnetic body are arranged along the rotation direction of the second rotor, and in which the repulsive force between the second rotating magnetic body and the second wall magnetic body decreases from upstream to downstream in the rotation direction; and a second coil body that is arranged upstream of the dividing wall surface of the second wall body in the rotation direction and has an induction coil that generates an electromotive force by electromagnetic induction by the second rotating magnetic body, wherein the rotor and the second rotor rotate about the rotation axis, the rotating magnetic body and the second rotating magnetic body have opposite polarities, and the induction coils in the coil body and the second coil body are configured by winding a conductor around the same core. [3] The generator according to [1], wherein the dividing wall surface of the wall body is formed so that the distance between the rotating magnetic body and the wall magnetic body increases from upstream to downstream in the rotation direction. [4] The generator according to [1], wherein the wall body has a plurality of the divided wall surfaces at equally spaced angles, and the rotor has a plurality of the rotating magnetic bodies at equally spaced angles. [5] The generator according to [1], wherein the sum of the number of induction coils in the coil body and the number of rotating magnetic bodies in the rotor is an odd number. [6] A power generation system in which a plurality of the generators according to [1] or [2] are connected on the same rotating shaft. [7] The power generation system according to [6], which generates electromotive force at equally spaced angles per rotation of the rotating shaft.

[0008] According to the present technology, a small rotational driving force can be converted into electric power with a simple configuration.

[0009] FIG. 1 is an XY sectional view for explaining the principle of a generator according to the present technology. FIG. 2 is an XY sectional view for explaining a generator according to a first embodiment. FIG. 3 is a YZ sectional view for explaining a generator according to the first embodiment. FIG. 4 is a diagram for explaining an example of a power generation system in which four generators are connected. FIG. 5 is a diagram for explaining a configuration example of four generators. FIG. 6 is a diagram for explaining the positions of induction coils of four generators. FIG. 7 is an XY sectional view for explaining a generator according to a second embodiment. FIG. 8 is an XY sectional view for explaining power generation in the generator according to the second embodiment. FIG. 9 is a diagram for explaining the shape of a rotor and the number of induction coils.

[0010] Hereinafter, embodiments of the present technology will be described in detail with reference to the drawings in the following order: 1. Principle of the generator according to the present technology 2. First embodiment (generator using a four-blade rotor) 3. Second embodiment (generator using a three-blade rotor) 4. Other embodiments

[0011] 1 is an XY cross-sectional view illustrating the principle of a generator according to the present technology. As shown in Fig. 1, the generator 1 includes a rotating shaft 1A, a rotor 2 that rotates about the rotating shaft 1A and has rotating magnetic bodies 2A to 2D at its outer circumferential end, a wall body 3 that has divided wall surfaces 3AA to 3CC in which wall magnetic bodies 3A to 3C having the same polarity as the rotating magnetic bodies 2A to 2D are arranged along a rotation direction R of the rotor 2 and in which the repulsive force between the rotating magnetic bodies 2A to 2D and the wall magnetic bodies 3A to 3C decreases from upstream to downstream in the rotation direction R, and a coil body 4 that is arranged upstream of the divided wall surfaces 3AA to 3CC in the wall body 3 in the rotation direction and has induction coils 4A to 4C that generate electromotive forces by electromagnetic induction by the rotating magnetic bodies 2A to 2D. Here, it is preferable that the wall body 3 has a plurality of divided wall surfaces 3AA to 3CC at equal angular intervals, and the rotor 2 has a plurality of rotating magnetic bodies 2A to 2D at equal angular intervals.

[0012] 1, the rotor 2 preferably has rotating magnetic bodies 2A-2D at its outer peripheral end at 90° intervals around the rotation axis 1A. The wall body 3 preferably has gaps along the rotational periphery of the rotating magnetic bodies 2A-2D of the rotor 2 so as not to come into contact with the rotating magnetic bodies 2A-2D, and divider wall surfaces 3AA-3CC are preferably arranged surrounding the rotor 2. The wall magnetic bodies 3A-3C are arranged on the inner walls of the divider wall surfaces 3AA-3CC, facing the outer peripheral surfaces of the rotating magnetic bodies 2A-2D, and the coil body 4 preferably has induction coils 4A-4C arranged upstream of the divider wall surfaces 3AA-3CC in the rotational direction at 120° intervals.

[0013] When the rotating magnetic body 2A reaches the position (0°) of the induction coil 4A due to the rotation of the rotor 2, a rotational force f １ is generated, and a rotational force f is generated by the repulsive force between the rotating magnetic body 2C and the wall surface magnetic body 3B. ２ is generated, and a rotational force f is generated by the repulsive force between the rotating magnetic body 2D and the wall surface magnetic body 3C. ３ occurs (f １ <f ２ <f ３ ), an induced electromotive force is generated in the induction coil 4A in a direction that cancels the change in the magnetic flux of the coil.

[0014] When the rotating magnetic body 2A rotates 30° from the position of the induction coil 4A, the rotating magnetic body 2B reaches the position of the induction coil 4B, and a rotational force f １ is generated, and a rotational force f is generated by the repulsive force between the rotating magnetic body 2D and the wall surface magnetic body 3C. ２ is generated, and a rotational force f is generated by the repulsive force between the rotating magnetic body 2A and the wall surface magnetic body 3A. ３ occurs (f １ <f ２ <f ３ ), an induced electromotive force is generated in the induction coil 4B in a direction that cancels the change in the magnetic flux of the coil.

[0015] When the rotating magnetic body 2A rotates 60° from the position of the induction coil 4A, the rotating magnetic body 2C reaches the position of the third induction coil 4C, and a rotational force f １is generated, and a rotational force f is generated by the repulsive force between the rotating magnetic body 2A and the wall surface magnetic body 3A. ２ is generated, and a rotational force f is generated by the repulsive force between the rotating magnetic body 2B and the wall surface magnetic body 3B. ３ occurs (f １ <f ２ <f ３ ), an induced electromotive force is generated in the induction coil 4C in a direction that cancels the change in the magnetic flux of the coil.

[0016] When the rotating magnetic body 2A rotates 90° from the position of the induction coil 4A, the rotating magnetic body 2D reaches the position of the induction coil 4A, and a rotational force f １ is generated, and a rotational force f is generated by the repulsive force between the rotating magnetic body 2B and the wall surface magnetic body 3B. ２ is generated, and a rotational force f is generated by the repulsive force between the rotating magnetic body 2C and the wall surface magnetic body 3C. ３ occurs (f １ <f ２ <f ３ ), an induced electromotive force is generated in the induction coil 4A in a direction that cancels the change in the magnetic flux of the coil.

[0017] According to the generator 1 having the above-described configuration, the driving force (F) that rotates the rotor 2 is a rotational force f due to the repulsive force between the rotating magnetic bodies 2A to 2D and the wall magnetic bodies 3A to 3C. １ ~f ３ This allows a small rotational driving force to be converted into electric power with a simple configuration.

[0018] 2. First Embodiment Fig. 2 is an XY cross-sectional view illustrating a generator according to a first embodiment, and Fig. 3 is a YZ cross-sectional view illustrating a generator according to the first embodiment. As shown in Figs. 2 and 3, the generator 10 includes a rotation mechanism 20 including a first rotor 21A and a second rotor 21AA, a wall body 30 including a first wall body and a second wall body that assist the rotation of the first rotor 21A and the second rotor 21AA, and a coil body 40 including a first coil body and a second coil body that generate electromotive force by electromagnetic induction. The rotation mechanism 20, the wall body 30, and the coil body 40 are housed in a housing 11.

[0019] The rotation mechanism 20 includes a first rotor 21A including a first blade 22A, a second blade 22B, a third blade 22C, and a fourth blade 22D, which are arranged at 90° intervals. The rotation mechanism 20 also includes a second rotor 21AA including a first blade 22AA, a second blade 22BB (not shown), a third blade 22CC, and a fourth blade 22DD (not shown), which are arranged at 90° intervals. In the first embodiment, the first rotor 21A and the second rotor 22AA rotate at the same speed around a rotation axis 20A that is parallel to the Z axis, and each blade is disposed at the same angle in the XY plane. The rotation axis 20A is rotatably supported on the housing 11 by bearings 12A and 12B.

[0020] The first blade 22A, the second blade 22B, the third blade 22C, and the fourth blade 22D of the first rotor 21A are provided with first rotating magnetic bodies 23A, 23B, 23C, and 23D, respectively, at their outer circumferential ends. Similarly, the first blade 22AA, the second blade 22BB (not shown), the third blade 22CC, and the fourth blade 22DD (not shown) of the second rotor 21AA are provided with second rotating magnetic bodies 23AA, 23BB (not shown), 23CC, and 23DD (not shown), respectively, at their outer circumferential ends. While electromagnets may be used for the first rotating magnetic bodies 23A-23D and the second rotating magnetic bodies 23AA-23DD, it is preferable to use permanent magnets such as neodymium magnets to avoid complex wiring and from the standpoint of power generation efficiency.

[0021] The wall body 30 comprises a first wall body including a first partition wall surface 31A, a second partition wall surface 31B, and a third partition wall surface 31C arranged at intervals of 120°, and a second wall body including a first partition wall surface 31AA (not shown), a second partition wall surface 31BB, and a third partition wall surface 31CC (not shown) arranged at intervals of 120°.

[0022] The first divided wall surface 31A, the second divided wall surface 31B, and the third divided wall surface 31C of the first wall body are fixed to the housing 11 by fixing members 32A, 32B, and 32C, respectively. The first divided wall surface 31A, the second divided wall surface 31B, and the third divided wall surface 31C include first wall magnetic bodies 33A, 33B, and 33C on their inner wall portions, respectively.

[0023] The first wall surface magnetic bodies 33A to 33C have the same polarity as the first rotating magnetic bodies 23A to 23D of the first rotor 21A. For example, if the magnetic pole on the outer circumferential surfaces of the first rotating magnetic bodies 23A to 23D of the first rotor 21A is an N pole, the magnetic pole on the inner circumferential surfaces of the first wall surface magnetic bodies 33A to 33C is also an N pole. Although electromagnets may be used for the first wall surface magnetic bodies 33A to 33C, it is preferable to use permanent magnets such as neodymium magnets from the standpoint of power generation efficiency.

[0024] The first divided wall surface 31A, the second divided wall surface 31B, and the third divided wall surface 31C are arranged to surround the first rotating magnetic bodies 23A to 23D on the outer periphery of the first rotor 21A with gaps provided so as to be out of contact with them. The first divided wall surface 31A, the second divided wall surface 31B, and the third divided wall surface 31C have first wall magnetic bodies 33A to 33C arranged on the inner walls thereof, respectively, facing the outer peripheries of the first rotating magnetic bodies 23A to 23D.

[0025] The first divided wall surface 31A is configured so that the repulsive force between the first rotating magnetic bodies 23A-23D and the first wall magnetic body 33A decreases from upstream to downstream in the rotation direction of the first rotor 21A. For example, as shown in Fig. 2, the first divided wall surface 31A is preferably formed so that the distance between the first rotating magnetic bodies 23A-23D and the first wall magnetic body 33A increases from upstream to downstream in the rotation direction of the first rotor 21A. Furthermore, the first wall magnetic body 33A is preferably formed in the shape of a curved surface that is a quadratic curve in a plane that includes the rotation plane of the first rotor 21A.

[0026] Furthermore, like the first divided wall surface 31A, the second divided wall surface 31B is also configured so that the repulsive force between the first rotating magnetic bodies 23A to 23D and the first wall surface magnetic body 33B decreases from upstream to downstream in the rotation direction of the rotor 21, and the third divided wall surface 31C is also configured so that the repulsive force between the first rotating magnetic bodies 23A to 23D and the first wall surface magnetic body 33C decreases from upstream to downstream in the rotation direction of the rotor 21.

[0027] The first divided wall surface 31AA (not shown), the second divided wall surface 31BB, and the third divided wall surface 31CC (not shown) of the second wall body are fixed to the housing 11 by fixing members 32AA (not shown), 32BB, and 32CC (not shown), respectively. The first divided wall surface 31AA (not shown), the second divided wall surface 31BB, and the third divided wall surface 31CC (not shown) each have a second wall magnetic body 33AA (not shown), a second wall magnetic body 33BB, and a second wall magnetic body 33CC (not shown) on their inner walls. Here, the second wall magnetic bodies 33AA to 33CC have the same polarity as the second rotating magnetic bodies 23AA to 23DD of the second rotor 21AA. While electromagnets may be used for the second wall magnetic bodies 33AA to 33CC, it is preferable to use permanent magnets such as neodymium magnets from the standpoint of power generation efficiency.

[0028] The configurations of the first partition wall 31AA (not shown), the second partition wall 31BB, and the third partition wall 31CC (not shown) are the same as those of the first wall body, and therefore will not be described here.

[0029] The coil body 40 includes a first coil body including a first induction coil 41A, a second induction coil 41B, and a third induction coil 41C. The coil body 40 also includes a second coil body including a first induction coil 41AA, a second induction coil 41BB (not shown), and a third induction coil 41CC (not shown). The first and second coil bodies generate induced electromotive forces by electromagnetic induction, and the battery 50 is charged with the induced electromotive forces generated in the first and second coil bodies.

[0030] The first induction coil 41A, second induction coil 41B, and third induction coil 41C in the first coil body are, for example, formed by winding a conductor around a ferromagnetic core, and generate an induced electromotive force in the coil itself in response to changes in magnetic flux. The first induction coil 41A, second induction coil 41B, and third induction coil 41C are preferably disposed upstream of the first divided wall surface 31A, second divided wall surface 31B, and third divided wall surface 31C, respectively, in the direction of rotation of the first rotor 21. This suppresses repulsive forces at the upstream ends of the first wall magnetic bodies 33A to 33C in the direction of rotation. This is thought to be because the magnetic flux at the upstream ends of the first wall magnetic bodies 33A to 33C in the direction of rotation is reduced by the core of the first coil body.

[0031] The first induction coil 41AA, the second induction coil 41BB (not shown), and the third induction coil 41CC (not shown) have the same configuration as the first coil body, and therefore description thereof will be omitted here.

[0032] In the generator 10 having the above-described configuration, it is preferable that the first rotor 21A and the second rotor 21AA rotate about the same rotation axis 20A, and that the first rotating magnetic bodies 23A-23D and the second rotating magnetic bodies 23AA-23DD have opposite polarities. For example, if the magnetic poles on the outer peripheral surfaces of the first rotating magnetic bodies 23A-23D of the first rotor 21A are north poles, it is preferable that the magnetic poles on the outer peripheral surfaces of the second rotating magnetic bodies 23AA-23DD of the second rotor 21AA are south poles.

[0033] 3, the first coil body and the second coil body are preferably configured by winding a conductor 43 around the same core 42. This allows the magnetic fields to be oriented in the same direction, increasing the magnetic flux and generating a high electromotive force. The generator 10 can also function as a DC generator and output DC power to charge the battery 50.

[0034] Next, the power generation operation will be described with reference to the XY cross-sectional view shown in Figure 2. When the first rotating magnetic body 23A of the first blade 22A reaches the position (0°) of the first induction coil 41A due to the rotation of the first rotor 21A, a rotational force f is generated due to the repulsive force between the first rotating magnetic body 23B of the second blade 22B and the first wall surface magnetic body 33A of the first divided wall surface 31A. １The repulsive force between the first rotating magnetic body 23C of the third blade 22C and the first wall surface magnetic body 33B of the second divided wall surface 31B generates a rotational force f ２ The repulsive force between the first rotating magnetic body 23D of the fourth blade 22D and the first wall surface magnetic body 33C of the third divided wall surface 31C generates a rotational force f ３ occurs (f １ <f ２ <f ３ ), an induced electromotive force is generated in the first induction coil 41A in a direction that cancels out the change in the magnetic flux of the coil.

[0035] When the first rotary magnetic body 23A of the first blade 22A rotates 30° from the position of the first induction coil 41A, the first rotary magnetic body 23B of the second blade 22B reaches the position of the second induction coil 41B, and a rotational force f is generated by the repulsive force (repulsive force) between the first rotary magnetic body 23C of the third blade 22C and the first wall surface magnetic body 33B of the second divided wall surface 31B. １ The repulsive force between the first rotating magnetic body 23D of the fourth blade 22D and the first wall surface magnetic body 33C of the third divided wall surface 31C generates a rotational force f ２ The repulsive force between the first rotating magnetic body 23A of the first blade 22A and the first wall surface magnetic body 33A of the first divided wall surface 31A generates a rotational force f ３ occurs (f １ <f ２ <f ３ ), an induced electromotive force is generated in the second induction coil 41B in a direction that cancels the change in the magnetic flux of the coil.

[0036] When the first rotary magnetic body 23A of the first blade 22A rotates by 60° from the position of the first induction coil 41A, the first rotary magnetic body 23C of the third blade 22C reaches the position of the third induction coil 41C, and a rotational force f is generated by the repulsive force (repulsive force) between the first rotary magnetic body 23D of the fourth blade 22D and the first wall surface magnetic body 33C of the third divided wall surface 31C. １ The repulsive force between the first rotating magnetic body 23A of the first blade 22A and the first wall surface magnetic body 33A of the first divided wall surface 31A generates a rotational force f ２ The repulsive force between the first rotating magnetic body 23B of the second blade 22B and the first wall surface magnetic body 33B of the second divided wall surface 31B generates a rotational force f ３ occurs (f １ <f ２ <f ３), an induced electromotive force is generated in the third induction coil 41C in a direction that cancels the change in the magnetic flux of the coil.

[0037] When the first rotary magnetic body 23A of the first blade 22A rotates 90° from the position of the first induction coil 41A, the first rotary magnetic body 23D of the fourth blade 22D reaches the position of the first induction coil 41A, and a rotational force f is generated by the repulsive force (repulsive force) between the first rotary magnetic body 23A of the first blade 22A and the first wall surface magnetic body 33A of the first divided wall surface 31A. １ The repulsive force between the first rotating magnetic body 23B of the second blade 22B and the first wall surface magnetic body 33B of the second divided wall surface 31B generates a rotational force f ２ The repulsive force between the first rotating magnetic body 23C of the third blade 22C and the first wall surface magnetic body 33C of the third divided wall surface 31C generates a rotational force f ３ occurs (f １ <f ２ <f ３ ), an induced electromotive force is generated in the first induction coil 41A in a direction that cancels out the change in the magnetic flux of the coil.

[0038] According to the generator 10 described above, the driving force (F) that rotates the first rotor 21A is mixed with the rotational force f due to the repulsive force between the first rotating magnetic bodies 23A to 23D and the first wall surface magnetic bodies 33A to 33C. １ ~f ３ This allows a small rotational driving force to be converted into electric power with a simple configuration.

[0039] [Power Generation System] Fig. 4 is a diagram illustrating an example of a power generation system in which four generators are connected by the same rotation shaft. Fig. 5 is a diagram illustrating an example configuration of the four generators, where Fig. 5(A) shows an example configuration of a first generator, Fig. 5(B) shows an example configuration of a second generator, Fig. 5(C) shows an example configuration of a third generator, and Fig. 5(D) shows an example configuration of a fourth generator. Fig. 6 is a diagram illustrating the positions of the induction coils of the four generators.

[0040] 4, the power generation system includes first to fourth generators I to IV, a drive device 60 that drives the first to fourth generators IV, and a battery 61 that charges with DC power output from the first to fourth generators IV. Examples of the drive device 60 include devices that rotate a rotating shaft, such as a turbine, a bicycle, an automobile, an electric fan, and a kneading machine.

[0041] Each of the first to fourth generators I to IV includes a rotation mechanism including a first rotor and a second rotor, a wall body including a first wall body and a second wall body that assist the rotation of the first rotor and the second rotor, and a coil body including a first coil body and a second coil body that generates an electromotive force by electromagnetic induction, similar to the aforementioned generator 10. Furthermore, the first rotor and the second rotor in the first to fourth generators I to IV rotate around the same rotation axis 60A.

[0042] In the power generation system, when all the blades of the first rotor and the second rotor are arranged at the same angle in the XY plane, it is preferable that the positions (angles) of the induction coils are different in the first to fourth generators I to IV. Also, it is preferable that the power generation system generates electromotive forces at angles that are equally spaced per rotation of the rotating shaft.

[0043] For example, if the induction coils 41IA, 41IB, and 41IC of the first generator I are positioned at angular positions of 0°, 120°, and 240°, respectively, as shown in Fig. 5A, the first induction coil 41IIA, the second induction coil 41IIB, and the third induction coil 41IIC of the second generator II are preferably positioned at angular positions of 60°, 180°, and 300°, respectively, as shown in Fig. 5B. Furthermore, the first induction coil 41IIIA, the second induction coil 41IIIB, and the third induction coil 41IIIIC of the third generator III are preferably positioned at angular positions of 30°, 150°, and 270°, respectively, as shown in Fig. 5C. Furthermore, the first induction coil 41IVA, the second induction coil 41IVB, and the third induction coil 41IVC of the fourth generator IV are preferably positioned at angular positions of 330°, 90°, and 210°, respectively, as shown in Fig. 5D. This allows electromotive forces to be generated at equal angular intervals per rotation of the rotary shaft, as shown in FIG.

[0044] In the power generation system configured as described above, connecting the first through fourth generators I through IV on the same rotating shaft allows for the construction of a multi-pole generator. Furthermore, by varying the positions (angles) of the induction coils in the first through fourth generators I through IV, the number of times that induction electromotive force is generated per rotation of the rotating shaft can be increased. For example, in the state shown in FIG. 5 , the first generator I generates an electromotive force in the first induction coil 41IA, the second generator II generates an electromotive force in the second induction coil 41IIB, the third generator III generates an electromotive force in the third induction coil 41IIIC, and the fourth generator IV generates an electromotive force in the second induction coil 41IVB, thereby generating power with a total of four poles (induction coils).

[0045] 2. Second embodiment Fig. 7 is an XY cross-sectional view illustrating a generator according to a second embodiment. As shown in Fig. 8, a generator 70 includes a rotation mechanism 80 including a rotor 81, a wall body 90 that assists the rotation of the rotor 81, and a coil body 100 that includes an induction coil that generates electromotive force by electromagnetic induction.

[0046] The rotation mechanism 80 includes a rotor 81 including a first blade 82A, a second blade 82B, and a third blade 82C arranged at 120° intervals. The rotor 81A rotates around a rotation axis 80A that is parallel to the Z axis. The first blade 82A, the second blade 82B, and the third blade 82C of the rotor 81A include a rotational magnetic body 83A, a rotational magnetic body 83B, and a rotational magnetic body 83C at their outer circumferential ends, respectively. While electromagnets may be used for the rotational magnetic bodies 83A to 83C, it is preferable to use permanent magnets such as neodymium magnets in order to avoid complex wiring and from the standpoint of power generation efficiency.

[0047] The wall body 90 includes a first partition wall surface 91A, a second partition wall surface 91B, a third partition wall surface 91C, and a fourth partition wall surface 91D, which are arranged at 90° intervals. The first partition wall surface 91A, the second partition wall surface 91B, the third partition wall surface 91C, and the fourth partition wall surface 91D include wall magnetic bodies 93A, 93B, 93C, and 93D on their inner walls, respectively.

[0048] The wall surface magnetic bodies 93A to 93D have the same polarity as the rotating magnetic bodies 83A to 83C of the rotor 81A. For example, if the magnetic pole on the outer circumferential surfaces of the rotating magnetic bodies 83A to 83C of the rotor 81A is an N pole, the magnetic pole on the inner circumferential surfaces of the wall surface magnetic bodies 93A to 93D is also an N pole. Although electromagnets may be used for the wall surface magnetic bodies 93A to 93D, it is preferable to use permanent magnets such as neodymium magnets from the standpoint of power generation efficiency.

[0049] The first divided wall surface 91A, the second divided wall surface 91B, the third divided wall surface 91C, and the fourth divided wall surface 91D are arranged to surround and provide gaps so as not to come into contact with the rotating magnetic bodies 83A to 83C on the outer periphery of the rotor 81. Wall magnetic bodies 93A to 93D are arranged on the inner walls of the first divided wall surface 91A, the second divided wall surface 91B, the third divided wall surface 91C, and the fourth divided wall surface 91D, respectively, facing the outer peripheries of the rotating magnetic bodies 83A to 83C.

[0050] As in the first embodiment, the dividing wall surface 91A is configured so that the repulsive force between the rotational magnetic bodies 83A-83C and the wall magnetic body 93A decreases from upstream to downstream in the rotation direction of the rotor 81A. For example, as shown in Fig. 7, the dividing wall surface 91A is preferably formed so that the distance between the rotational magnetic bodies 83A-83C and the wall magnetic body 93A increases from upstream to downstream in the rotation direction of the rotor 81A. In addition, the wall magnetic body 93A is preferably formed in a curved surface that is a quadratic curve in a plane that includes the rotation plane of the rotor 81A.

[0051] The coil body 100 includes a first induction coil 101A, a second induction coil 101B, a third induction coil 101C, and a fourth induction coil 101D. The coil body 100 generates an induced electromotive force by electromagnetic induction.

[0052] As in the first embodiment, the first induction coil 101A, the second induction coil 101B, the third induction coil 101C, and the fourth induction coil 101D are each formed by winding a conductor around a ferromagnetic core, for example, and generate an induced electromotive force in the coil itself in response to a change in magnetic flux. The first induction coil 101A, the second induction coil 101B, the third induction coil 101C, and the fourth induction coil 101D are preferably disposed upstream of the first partition wall surface 91A, the second partition wall surface 91B, the third partition wall surface 91C, and the fourth partition wall surface 91D, respectively, in the rotation direction of the rotor 81.

[0053] 8A and 8B are XY cross-sectional views for explaining power generation in a generator according to the second embodiment, where FIG. 8A shows the case where the rotor rotation angle is 0°, FIG. 8B shows the case where the rotor rotation angle is 30°, FIG. 8C shows the case where the rotor rotation angle is 60°, and FIG. 8D shows the case where the rotor rotation angle is 90°.

[0054] As shown in FIG. 8A, when the rotation of the rotor 81A causes the rotating magnetic body 83A of the first blade 82A to reach the position (0°) of the first induction coil 101A, a rotational force f is generated due to the repulsive force between the rotating magnetic body 83C of the third blade 82C and the wall surface magnetic body 93C of the third divided wall surface 91C. １ The repulsive force between the rotating magnetic body 83B of the second blade 82B and the wall surface magnetic body 93B of the dividing wall surface 91B generates a rotational force f２ occurs (f １ <f ２ ), an induced electromotive force is generated in the first induction coil 101A in a direction that cancels the change in the magnetic flux of the coil.

[0055] As shown in FIG. 8B, when the rotating magnetic body 83A of the first blade 82A rotates 30° from the position of the first induction coil 101A, the rotating magnetic body 83C of the third blade 82C reaches the position of the fourth induction coil 101D, and a rotational force f １ The repulsive force between the rotating magnetic body 83A of the first blade 82A and the wall surface magnetic body 93A of the first divided wall surface 91A generates a rotational force f ２ occurs (f １ <f ２ ), an induced electromotive force is generated in the fourth induction coil 101D in a direction that cancels the change in the magnetic flux of the coil.

[0056] As shown in FIG. 8C, when the rotating magnetic body 83A of the first blade 82A rotates 60° from the position of the first induction coil 101A, the rotating magnetic body 83B of the second blade 82B reaches the position of the third induction coil 101C, and a rotational force f １ The rotational force f is generated by the repulsive force between the rotational magnetic body 83C of the third blade 82C and the wall surface magnetic body 93D of the fourth divided wall surface 91D. ２ occurs (f １ <f ２ ), an induced electromotive force is generated in the third induction coil 101C in a direction that cancels the change in the magnetic flux of the coil.

[0057] As shown in FIG. 8D, when the rotating magnetic body 83A of the first blade 82A rotates 90° from the position of the first induction coil 101A, the rotating magnetic body 83A of the first blade 82A reaches the position of the second induction coil 101B, and a rotational force f １ The repulsive force between the rotating magnetic body 83B of the second blade 82B and the wall surface magnetic body 93C of the third divided wall surface 91C generates a rotational force f ２ occurs (f １ <f２ ), an induced electromotive force is generated in the second induction coil 101B in a direction that cancels the change in the magnetic flux of the coil.

[0058] In the second embodiment, the driving force (F) that rotates the rotor 81A is a rotational force f due to the repulsive force between the rotating magnetic bodies 83A to 83C and the wall magnetic bodies 93A to 93D. １ ~f ２ This allows a small rotational driving force to be converted into electric power with a simple configuration.

[0059] Furthermore, by making the angular spacing in the rotational direction of the rotating magnetic bodies 83A to 83C wider than the angular spacing in the rotational direction of the wall magnetic bodies 93A to 93D, when a repulsive force acts on one rotating magnetic body from one wall magnetic body and causes it to rotate, a repulsive force acts on another wall magnetic body before a repulsive force acts on another adjacent wall magnetic body, so that the rotational speed of the rotor can be boosted before a repulsive force acts between the adjacent wall magnetic bodies, and the rotational speed of the rotor can be maintained at a high speed.

[0060] In the generator 70 having the above-described configuration, it is preferable to configure the first and second rotors, the first and second wall bodies, and the first and second coil bodies, as in the first embodiment, and to rotate the first and second rotors about the same rotation axis. It is also preferable to configure a power generation system in which a plurality of generators are connected together, as in the first embodiment.

[0061] Other Embodiments The present technology is not limited to the first and second embodiments described above, and various modifications are possible. For example, the number of rotor blades and the number of induction coils can be changed as appropriate depending on the size and application of the generator.

[0062] Figure 9 is a diagram illustrating the shape of the rotor and the number of induction coils. The generator shown in Figure 9(A) is equipped with first to fifth induction coils 120A to 120E for a rotor 110A having magnetic bodies at the tips of four blades. The rotor 110A has four blades spaced at 90° intervals, and a rotating magnetic body is provided at the tip of each blade. The first to fifth induction coils 120A to 120E are arranged at 72° intervals.

[0063] The generator shown in Figure 9(B) has a rotor 110B with five blades and magnetic bodies at the tips, and first to fourth induction coils 120A to 120D. The rotor 110B has five blades spaced at 72° intervals, with rotating magnetic bodies at the tips of each blade. The first to fourth induction coils 120A to 120D are arranged at 90° intervals.

[0064] The generator shown in Figure 9(C) has a rotor 110C with five blades and magnetic bodies at the tips, and first to sixth induction coils 120A to 120F. The rotor 110C has five blades spaced at 72° intervals, with rotating magnetic bodies at the tips of each blade. The first to sixth induction coils 120A to 120F are arranged at 60° intervals.

[0065] The generator shown in Figure 9(D) has a rotor 110D with six blades and magnetic material at the tips, and first to fifth induction coils 120A to 120E. The rotor 110D has six blades spaced at 60° intervals, with rotating magnetic material at the tip of each blade. The first to fifth induction coils 120A to 120F are arranged at 72° intervals.

[0066] The generator shown in Figure 9(E) has a rotor 110E with rotating magnetic bodies at the tips of eight blades and first to ninth induction coils 120A to 120I. The rotor 110E has eight blades spaced at 45° intervals, with rotating magnetic bodies at the tips of each blade. The first to ninth induction coils 120A to 120I are arranged at 40° intervals.

[0067] As explained using the generator configuration shown in Fig. 9, it is preferable that the total number of induction coils and the number of rotating magnetic bodies of the rotor be an odd number, which allows multi-polar power to be generated and allows the configuration of a multi-polar generator.

[0068] Furthermore, in the first and second embodiments described above, the distance between the rotating magnetic body and the wall magnetic body is formed so as to increase from upstream to downstream in the direction of rotation of the rotor, but this is not limited to this, and for example, the rotor may be configured using a wall magnetic body whose magnetic flux density decreases from upstream to downstream in the direction of rotation of the rotor.

[0069] In the first embodiment described above, the blades of the multiple rotors are arranged so that they form the same angle in the XY plane, and the arrangement (angle) of the induction coil is changed to generate electromotive forces at angles that are equally spaced relative to one rotation of the rotating shaft. However, this is not limited to this, and for example, the blades of the multiple rotors may be arranged at different angles in the XY plane, and the arrangement (angle) of the induction coil may be the same to generate electromotive forces at angles that are equally spaced relative to one rotation of the rotating shaft.

[0070] The generator according to the present technology can convert small rotational driving force into electricity with a simple configuration. Furthermore, while conventional power generation using high-pressure steam increases the amount of waste heat and greenhouse gas emissions, which raises concerns about the environmental impact, this technology enables power generation with a reduced environmental impact, and is therefore expected to contribute to "Affordable and Clean Energy," one of the Sustainable Development Goals (SDGs) advocated by the United Nations.

[0071] DESCRIPTION OF SYMBOLS 1 Generator, 1A Rotating shaft, 2 Rotor, 2A to 2D Rotating magnetic body, 3 Wall body, 3A to 3D Wall magnetic body, 3AA to 3DD Wall body having divided wall surface, 4 Coil body, 4A to 4D Induction coil, 10 Generator, 20 Rotating mechanism, 20A Rotating shaft, 21A First rotor, 22A First blade, 22B Second blade, 22C Third blade, 22D Fourth blade, 23A to 23D First rotating magnetic body, 21AA Second rotor, 22AA First blade, 22BB Second blade, 22CC Third blade, 22DD Fourth blade, 23AA to 23DD Second rotating magnetic body, 30 Wall body, 31A First divided wall surface, 31B Second divided wall surface, 31C Third divided wall surface, 32A to 32C Fixed member, 33A to 33C first wall magnetic body, 31AA first partition wall, 31BB second partition wall, 31CC third partition wall, 33AA to 33CC second wall magnetic body, 40 coil body, 41A first induction coil, 41B second induction coil, 41C third induction coil, 41AA first induction coil, 41BB second induction coil, 41CC third induction coil, 50 battery, 60 drive device, 61 battery, 41IA to 41IVA first induction coil, 41IB to 41IVB second induction coil, 41IC to 41IVC third induction coil, 70 generator, 81 rotor, 82A first blade, 82B second blade, 82C third blade, 83A to 83D rotating magnetic body, 90 wall body, 93A to 93D Wall surface magnetic body, 100 coil body, 101A first induction coil, 101B second induction coil, 101C third induction coil, 110A to 110E rotor, 120A first induction coil, 120B second induction coil, 120C second induction coil, 120C third induction coil, 120D fourth induction coil, 120E fifth induction coil, 120F sixth induction coil, 120G seventh induction coil, 120H eighth induction coil, 120I ninth induction coil

Claims

1. A generator comprising: a rotating shaft; a rotor that rotates around said rotating shaft and has a rotating magnetic body at its outer peripheral end; a wall body having divided wall surfaces on which wall magnetic bodies of the same polarity as said rotating magnetic body are arranged along the rotation direction of said rotor, and in which the repulsive force between said rotating magnetic body and said wall magnetic body decreases from upstream to downstream in said rotation direction; and a coil body having an induction coil that is arranged upstream of the divided wall surfaces of said wall body in said rotation direction and generates electromotive force by electromagnetic induction by said rotating magnetic body.

2. A generator as claimed in claim 1, comprising: a second rotor which rotates around the rotation axis and has a second rotating magnetic body at its outer circumferential end; a second wall body which has a divided wall surface on which second wall magnetic bodies of the same polarity as the second rotating magnetic body are arranged along the rotation direction of the second rotor, and in which the repulsive force between the second rotating magnetic body and the second wall magnetic body decreases from upstream to downstream in the rotation direction; and a second coil body which is arranged upstream of the divided wall surface of the second wall body in the rotation direction and has an induction coil which generates an electromotive force by electromagnetic induction by the second rotating magnetic body, wherein the rotor and the second rotor rotate around the rotation axis, the rotating magnetic body and the second rotating magnetic body have opposite polarities, and the induction coil in the coil body and the second coil body is formed by winding a conductor around the same core.

3. A generator according to claim 1, wherein the dividing wall surfaces of said wall body are formed so that the distance between said rotating magnetic body and said wall magnetic body increases from upstream to downstream in said rotation direction.

4. The generator according to claim 1, wherein said wall body has a plurality of said divided wall surfaces at equal angular intervals, and said rotor has a plurality of said rotating magnetic bodies at equal angular intervals.

5. The generator according to claim 1, wherein the sum of the number of induction coils in said coil body and the number of rotating magnetic bodies in said rotor is an odd number.

6. A power generation system in which a plurality of generators according to claim 1 or 2 are connected on the same rotating shaft.

7. The power generation system according to claim 6, wherein electromotive forces are generated at equally spaced angles per one rotation of said rotary shaft.

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