WO2021003588A1 - 盘式电机转子 - Google Patents

盘式电机转子 Download PDF

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Publication number
WO2021003588A1
WO2021003588A1 PCT/CN2019/094800 CN2019094800W WO2021003588A1 WO 2021003588 A1 WO2021003588 A1 WO 2021003588A1 CN 2019094800 W CN2019094800 W CN 2019094800W WO 2021003588 A1 WO2021003588 A1 WO 2021003588A1
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Prior art keywords
permanent magnet
disc
rotor
inner ring
fixed inner
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PCT/CN2019/094800
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English (en)
French (fr)
Inventor
余仁伟
Original Assignee
余仁伟
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Application filed by 余仁伟 filed Critical 余仁伟
Priority to PCT/CN2019/094800 priority Critical patent/WO2021003588A1/zh
Publication of WO2021003588A1 publication Critical patent/WO2021003588A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders

Definitions

  • the invention relates to a disc motor, in particular to a rotor of a disc generator.
  • the power density of the traditional disc motor is low.
  • the inventors have discovered through experiments a disc motor technical solution that can break through the bottleneck of the traditional disc motor. It is applied to the disc generator.
  • the rotor of the disc generator first, the rotor of the prior art bonds the permanent magnet to the disc. After a period of use, the viscose will become brittle and fall off, resulting in the disc.
  • the service life of the type motor is short; secondly, the magnet will generate extra pressure on the outer end of the rotor during the operation, and the excessive pressure will also affect the service life of the corresponding parts and the whole.
  • the technical problem to be solved by the present invention is to provide a disc motor rotor, which can achieve a longer service life with a reasonable arrangement structure.
  • the disc motor rotor is characterized in that: a sheet-shaped annular rotor disc is provided, and the innermost ring of the rotor disc is a fixed part for connecting with the shaft and the rotor connecting piece.
  • the outer edge of one side surface is provided with an outer retaining ring higher than the plane of the rotor disc, and a fixed inner ring is fixed at the outer edge of the fixed part on the same side surface;
  • An embodiment of the pushing structure is: on the fixed inner ring, a screw seat is fixed at the position where the center line of each permanent magnet passes, the screw seat is provided with an internal threaded through hole, and the center line of the internal threaded through hole and the permanent magnet center line Coincident or parallel, a jacking screw is threadedly connected to the inner threaded through hole, and the front end of the jacking screw is pressed against the inner end of the permanent magnet when the rotor disc is in a static state.
  • Another embodiment of the pushing structure is: on the fixed inner ring, the position where the center line of each permanent magnet passes is provided with a shrapnel that expands from the plane of the fixed inner ring at an acute angle, and the direction of the opening angle of the shrapnel faces the inner end surface of the permanent magnet , In the static state of the rotor disc, the inner side of the opening angle of the shrapnel contacts the inner end of the permanent magnet.
  • the opening angle of the shrapnel is 25-75°.
  • the bottom surface of the permanent magnet is close to the disk surface of the rotor disc, the top surface and bottom surface height of the permanent magnet is 1 ⁇ 15mm higher than the top surface height of the fixed inner ring, and the top surface and bottom surface height of the permanent magnet is higher than the top surface of the outer retaining ring
  • the height is 0.05 ⁇ 0.5mm.
  • the rotor disk is made of magnetically conductive material.
  • the rotor disc is provided with a through hole at a position corresponding to the low magnetic field intensity of the permanent magnet.
  • connection method between the permanent magnet and the rotor disk used in the disc motor rotor of the present invention discards the adhesive connection method that affects the service life, and is provided with a limit and clamping structure on the outside.
  • the thickness of the limiting structure is set to be smaller than the thickness of the magnet.
  • the present invention also provides two Different clamping schemes.
  • the rotor disc where the magnetic field of the permanent magnet is weakest is provided with a through hole.
  • the protrusion of the magnet can be set here as a limit and positioning.
  • it can reduce the weight of the disc, adjust the weight balance and It facilitates the disassembly and assembly of the permanent magnet.
  • the permanent magnet can be conveniently disassembled and installed temporarily during transportation, which reduces the weight of the rotor when it is transported separately, and is also convenient for maintenance and replacement of a single permanent magnet.
  • Figure 1 is a schematic top view of the first embodiment of the rotor of the present invention.
  • Figure 2 is a schematic top view of the second embodiment of the rotor of the present invention.
  • Fig. 3 is a schematic perspective view of the first embodiment of the rotor of the present invention.
  • the disk motor rotor is provided with a sheet-shaped annular rotor disk 2, which is made of magnetically conductive material .
  • the innermost ring of the rotor disc 2 is a fixing part 8 for connecting with the shaft and the rotor connecting piece.
  • the fixing part may be an integral or separate fastening structure with the rotor disc.
  • the outer edge of one side of the rotor disc 2 is provided with an outer retaining ring 5 higher than the plane of the rotor disc, and a fixed inner ring 1 is fixed at the outer edge of the fixing portion 8 on the same side.
  • the other side can be set as a smooth plane.
  • a concave front top groove 3 is uniformly distributed, and a circle of permanent magnets 4 is evenly distributed between the fixed inner ring 1 and the front top groove 3, and the bottom surface of the permanent magnet 4 is tight.
  • the surface of the rotor disc 2 is attached.
  • the height of the top surface and the bottom surface of the permanent magnet is 1 ⁇ 15mm higher than the height of the top surface of the fixed inner ring 1, and the height of the top surface and the bottom surface of the permanent magnet is 0.05 ⁇ higher than the height of the top surface of the outer retaining ring 5. 0.5mm.
  • the magnetic flux path with the stator is reduced, and on the other hand, the friction between the retaining ring and the stator is avoided.
  • a single permanent magnet is axially symmetrical with respect to the radial centerline, and the centerline coincides with the radial line of the circle where the rotor disk profile is located.
  • the outer end of the permanent magnet 4 is embedded in the front top slot 3, which is combined with the radial position
  • the fixed inner ring 1 fixes the permanent magnet 4 in the radial position, and ensures that the permanent magnet does not move relative to the rotor disc during high-speed rotation.
  • the inner end of the permanent magnet is provided with an ejection structure that allows the permanent magnet to be pushed radially outward, and the ejection structure is connected or integrated with the fixed inner ring.
  • the permanent magnet is subjected to the pressure superimposed on the outer end by the centrifugal force of the rotation, and the force on the inner end is reduced.
  • the push structure is arranged on the inner end of the permanent magnet and the pressure on the permanent magnet is small, so that the permanent magnet is protected from excessive I was injured under great pressure.
  • FIG. 2 and 3 An example of a pushing structure is shown in Figs. 2 and 3.
  • the position where the center line of each permanent magnet passes is provided with a shrapnel 9 which expands from the plane of the fixed inner ring at an acute angle. Facing the inner end surface of the permanent magnet, the opening angle of the elastic piece 9 is preferably 25-75°.
  • the shrapnel 9 is integrated with the fixed inner ring 1 and can be manufactured at one time. When the rotor disc 2 is in a static state, the inner side of the opening angle of the shrapnel contacts the inner end of the permanent magnet.
  • the jacking structure is convenient to install and low in cost.
  • FIG. 1 Another embodiment of the pushing structure is as shown in Fig. 1.
  • a screw seat 6 is fixed at the position where the center line of each permanent magnet passes.
  • the screw seat 6 is provided with an internal thread through hole, and the internal thread passes through.
  • the center line of the hole coincides with or parallel to the center line of the permanent magnet, and the internal threaded through hole is threadedly connected with the anchor screw 7.
  • the front end of the anchor screw 7 abuts the inner end of the permanent magnet .
  • the contact area between the fixing screw 7 and the inner end of the permanent magnet 4 is small, resulting in a higher pressure, when the rotor rotates, the force on the inner end of the permanent magnet 4 is reduced.
  • the pressure at the outer end of the permanent magnet 4 increases, but the outer end of the permanent magnet 4 is embedded in the front top groove 3, and the front top groove 3 has a large contact area with the outer end of the permanent magnet, and the pressure is small.
  • the rotor disc 2 is provided with a through hole corresponding to the low magnetic field strength of the permanent magnet.
  • the protrusion of the magnet can be set here as a limit and positioning.
  • it can reduce the weight of the disc, adjust the weight balance and It facilitates the disassembly and assembly of permanent magnets.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

一种盘式电机转子，设有片状圆环形的转子盘片，在转子盘片的一个侧面的外边缘设有高出转子盘片平面的外挡圈，同一侧面固定设有固定内圈；在外挡圈面向圆心的内侧面均布有内凹的前顶槽，在固定内圈和前顶槽之间辐射状均布有一周永久磁铁，单个永久磁铁径向对称，所述永久磁铁的外端嵌入所述前顶槽内，所述永久磁铁的内端处设有使永久磁铁被径向外推的顶推结构，所述顶推结构与固定内圈连接或一体。在永久磁铁的磁场最弱处的转子盘片设有通孔，作为磁体限位、定位，对盘片起到减重、调节重量平衡和便于永久磁铁拆装的作用。

Description

盘式电机转子 技术领域
本发明涉及盘式电机，具体说是一种盘式发电机的转子。
 背景技术
传统的盘式电机的功率密度偏低，本发明人通过实验发现了可以突破传统盘式电机瓶颈的盘式电机技术方案。应用于盘式发电机，针对盘式发电机的转子，首先，现有技术的转子将永久磁铁与盘片粘接，在使用一段时间后就会发生粘胶变脆、脱落的现象，导致盘式电机的使用寿命短；其次，转子在运转过程中，磁铁会对其外端产生额外的压力，过大的压力也会影响对应部件和整体的使用寿命。
 技术问题
本发明所要解决的技术问题是提供一种盘式电机转子，以合理的布置结构实现更长的使用寿命。
 技术解决方案
所述的盘式电机转子，其特征在于：设有片状圆环形的转子盘片，在转子盘片的最内环为用于与轴、转子连接件连接的固定部，在转子盘片的一个侧面的外边缘设有高出转子盘片平面的外挡圈，同一侧面在固定部的外边缘处固定设有固定内圈；
在外挡圈面向圆心的内侧面均布有内凹的前顶槽，在固定内圈和前顶槽之间辐射状均布有一周永久磁铁，单个永久磁铁径向对称，中线重合于转子盘片轮廓所在圆的辐射线，所述永久磁铁的外端嵌入所述前顶槽内，所述永久磁铁的内端处设有使永久磁铁被径向外推的顶推结构，所述顶推结构与固定内圈连接或一体。
一种顶推结构的实施例为：在固定内圈上，每一个永久磁铁中线经过的位置固定设有螺钉座，螺钉座设有内螺纹通孔，内螺纹通孔的中心线与永久磁铁中线重合或平行，在所述内螺纹通孔内螺纹连接有顶固螺钉，在转子盘片的静止状态下，顶固螺钉的前端顶在永久磁铁的内端。
相邻的螺钉座之间为固定内圈径向向外的凸出部，使永久磁铁的尾端嵌设在相邻的一对凸出部之间。
另一种顶推结构的实施例为：在固定内圈上，每一个永久磁铁中线经过的位置设有从固定内圈平面锐角外张的弹片，弹片的张角方向面对永久磁铁的内端面，在转子盘片的静止状态下，弹片的张角内侧面接触永久磁铁的内端部。
优选地，弹片的张角为25~75°。
所述永久磁铁的底面紧贴转子盘片的盘面，永久磁铁的顶面到底面高度比固定内圈的顶面高度高1~15mm，永久磁铁的顶面到底面高度比外挡圈的顶面高度高0.05~0.5mm。
所述转子盘片为导磁材料。
优选地，转子盘片的对应永久磁铁低磁场强度位置设有通孔。
 有益效果
本发明的盘式电机转子所使用的永久磁铁与转子盘片的连接方式，抛弃了影响使用寿命的粘接连接方式，在外部设置限位和夹持结构。为了尽量减小转子与定子之间的间隙，并避免限位结构与定子之间的碰擦，限位结构的厚度设置为小于磁体的厚度。
由于转子在旋转时，永久磁铁的外端会叠加受力，易受到损伤，因此其中的夹持施力方向设置为由永久磁铁的近圆心端径向向外，本发明并给出了两种不同的夹持方案。
在永久磁铁的磁场最弱处的转子盘片设有通孔，一方面可以在此处设置磁体的凸起作为限位、定位，另一方面可以对盘片起到减重、调节重量平衡和便于永久磁铁拆装的作用，在搬运时可以临时对永久磁铁方便地进行拆卸和安装，减轻转子单独运输时的重量，也便于维护和单个永久磁铁的更换。
 附图说明
图1 是本发明转子实施例一的俯视图示意图，
图2 是本发明转子实施例二的俯视图示意图，
图3 是本发明转子实施例一的立体图示意图。
图中：1-固定内圈，2-转子盘片，3-前顶槽，4-永久磁铁，5-外挡圈，6-螺钉座，7-顶固螺钉，8-固定部，9-弹片，10-通孔。
 本发明的实施方式
下面结合附图和实施例对本发明进一步说明：如图1、2、3中所示盘式电机转子，设有片状圆环形的转子盘片2，所述转子盘片2为导磁材料。在转子盘片2的最内环为用于与轴、转子连接件连接的固定部8，固定部可以是与转子盘片一体或分体紧固连接结构。在转子盘片2的一个侧面的外边缘设有高出转子盘片平面的外挡圈5，同一侧面在固定部8的外边缘处固定设有固定内圈1。另一侧面可设为光整的平面。
在外挡圈5面向圆心的内侧面均布有内凹的前顶槽3，在固定内圈1和前顶槽3之间辐射状均布有一周永久磁铁4，所述永久磁铁4的底面紧贴转子盘片2的盘面，永久磁铁的顶面到底面高度比固定内圈1的顶面高度高1~15mm，永久磁铁的顶面到底面高度比外挡圈5的顶面高度高0.05~0.5mm。一方面减小与定子之间的磁通路径，另一方面避免了挡圈与定子的摩擦。
单个永久磁铁相对于径向的中线轴对称，中线重合于转子盘片轮廓所在圆的辐射线，所述永久磁铁4的外端嵌入所述前顶槽3内，前顶槽3结合径向位置的固定内圈1将永久磁铁4固定在径向位置，高速旋转时保证永久磁铁不发生与转子盘片的相对位移。所述永久磁铁的内端处设有使永久磁铁被径向外推的顶推结构，所述顶推结构与固定内圈连接或一体。高速旋转时永久磁铁的受到由旋转的离心力而叠加到外端部的压力，内端受力减小，顶推结构设置于永久磁铁的内端对永久磁铁的压力小，使永久磁铁避免受到过大的压力而被损伤。
一种顶推结构的实施例如图2、3所示，在固定内圈1上，每一个永久磁铁中线经过的位置设有从固定内圈平面锐角外张的弹片9，弹片9的张角方向面对永久磁铁的内端面，优选弹片9的张角为25~75°。弹片9与固定内圈1一体，可以一次加工制作，在转子盘片2的静止状态下，弹片的张角内侧面接触永久磁铁的内端部。这种顶推结构安装方便且成本低。
另一种顶推结构的实施例为：见图1，在固定内圈1上，每一个永久磁铁中线经过的位置固定设有螺钉座6，螺钉座6设有内螺纹通孔，内螺纹通孔的中心线与永久磁铁中线重合或平行，在所述内螺纹通孔与顶固螺钉7螺纹连接，在转子盘片2的静止状态下，顶固螺钉7的前端顶在永久磁铁的内端。虽然顶固螺钉7与永久磁铁4的内端部接触面积小，导致压强较大，但是当转子旋转时，永久磁铁4的内端受力减小。永久磁铁4的外端压力增大，但永久磁铁4的外端嵌设在前顶槽3内，前顶槽3与永久磁铁的外端接触面积大，压强较小。
相邻的螺钉座6之间为固定内圈1径向向外的凸出部11，使永久磁铁4的尾端嵌设在相邻的一对凸出部11之间，对永久磁铁4起到限位作用。
转子盘片2的对应永久磁铁低磁场强度位置设有通孔，一方面可以在此处设置磁体的凸起作为限位、定位，另一方面可以对盘片起到减重、调节重量平衡和便于永久磁铁拆装的作用。

Claims (8)

  1. 一种盘式电机转子，其特征在于：设有片状圆环形的转子盘片（2），在转子盘片（2）的最内环为用于与轴、转子连接件连接的固定部（8），在转子盘片（2）的一个侧面的外边缘设有高出转子盘片平面的外挡圈（5），同一侧面在固定部（8）的外边缘处固定设有固定内圈（1）；
    在外挡圈（5）面向圆心的内侧面均布有内凹的前顶槽（3），在固定内圈（1）和前顶槽（3）之间辐射状均布有一周永久磁铁（4），单个永久磁铁径向对称，中线重合于转子盘片轮廓所在圆的辐射线，所述永久磁铁（4）的外端嵌入所述前顶槽（3）内，所述永久磁铁的内端处设有使永久磁铁被径向外推的顶推结构，所述顶推结构与固定内圈连接或一体。
  2. 根据权利要求1所述的盘式电机转子，其特征在于：所述顶推结构为：在固定内圈（1）上，每一个永久磁铁中线经过的位置设有从固定内圈平面锐角外张的弹片（9），弹片（9）的张角方向面对永久磁铁的内端面，在转子盘片（2）的静止状态下，弹片的张角内侧面接触永久磁铁的内端部。
  3. 根据权利要求2所述的盘式电机转子，其特征在于：弹片（9）的张角为25~75°。
  4. 根据权利要求1所述的盘式电机转子，其特征在于：所述顶推结构为：在固定内圈（1）上，每一个永久磁铁中线经过的位置固定设有螺钉座（6），螺钉座（6）设有内螺纹通孔，内螺纹通孔的中心线与永久磁铁中线重合或平行，在所述内螺纹通孔内螺纹连接有顶固螺钉（7），在转子盘片（2）的静止状态下，顶固螺钉（7）的前端顶在永久磁铁的内端。
  5. 根据权利要求4所述的盘式电机转子，其特征在于：相邻的螺钉座（6）之间为固定内圈（1）径向向外的凸出部（11），使永久磁铁（4）的尾端嵌设在相邻的一对凸出部（11）之间。
  6. 根据权利要求1所述的盘式电机转子，其特征在于：所述永久磁铁（4）的底面紧贴转子盘片（2）的盘面，永久磁铁的顶面到底面高度比固定内圈（1）的顶面高度高1~15mm，永久磁铁的顶面到底面高度比外挡圈（5）的顶面高度高0.05~0.5mm。
  7. 根据权利要求1或6所述的盘式电机转子，其特征在于：转子盘片（2）的对应永久磁铁低磁场强度位置设有通孔。
  8. 根据权利要求1所述的盘式电机转子，其特征在于：所述转子盘片（2）为导磁材料。
PCT/CN2019/094800 2019-07-05 2019-07-05 盘式电机转子 WO2021003588A1 (zh)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4864175A (en) * 1987-04-23 1989-09-05 Lothar Rossi Rotor for an electric motor
US20060238056A1 (en) * 2005-04-22 2006-10-26 Alvarez Francesc C System for securing permanent magnets
CN203289217U (zh) * 2013-05-23 2013-11-13 杭州娃哈哈科技有限公司 一种盘式电机转子
CN208158266U (zh) * 2018-03-23 2018-11-27 上海大郡动力控制技术有限公司 盘式电机转子组件中磁钢的固定结构
CN109474098A (zh) * 2019-01-02 2019-03-15 孙建林 一种方便装配的盘式电机转子及其装配方法
CN208923940U (zh) * 2018-11-16 2019-05-31 核心驱动科技（金华）有限公司 一种转子结构以及盘式电机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4864175A (en) * 1987-04-23 1989-09-05 Lothar Rossi Rotor for an electric motor
US20060238056A1 (en) * 2005-04-22 2006-10-26 Alvarez Francesc C System for securing permanent magnets
CN203289217U (zh) * 2013-05-23 2013-11-13 杭州娃哈哈科技有限公司 一种盘式电机转子
CN208158266U (zh) * 2018-03-23 2018-11-27 上海大郡动力控制技术有限公司 盘式电机转子组件中磁钢的固定结构
CN208923940U (zh) * 2018-11-16 2019-05-31 核心驱动科技（金华）有限公司 一种转子结构以及盘式电机
CN109474098A (zh) * 2019-01-02 2019-03-15 孙建林 一种方便装配的盘式电机转子及其装配方法

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