WO2011050722A1 - 一种自起动永磁电机转子结构及其制造方法 - Google Patents

一种自起动永磁电机转子结构及其制造方法 Download PDF

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Publication number
WO2011050722A1
WO2011050722A1 PCT/CN2010/078151 CN2010078151W WO2011050722A1 WO 2011050722 A1 WO2011050722 A1 WO 2011050722A1 CN 2010078151 W CN2010078151 W CN 2010078151W WO 2011050722 A1 WO2011050722 A1 WO 2011050722A1
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WIPO (PCT)
Prior art keywords
rotor
permanent magnet
cymbal
self
closed
Prior art date
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Ceased
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PCT/CN2010/078151
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English (en)
French (fr)
Inventor
黄辉
胡余生
陈东锁
张小波
刘健宁
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Publication of WO2011050722A1 publication Critical patent/WO2011050722A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/46—Motors having additional short-circuited winding for starting as an asynchronous motor

Definitions

  • the invention relates to the field of electric machines and compressors, in particular to a rotor of a self-starting permanent magnet motor. Background technique
  • a hybrid motor In machines with high starting torque and high operating efficiency, a hybrid motor is used, which has asynchronous motor characteristics at start-up and synchronous motor characteristics during continuous operation.
  • a conductive strip which is electrically conductive and easy to form (for example, aluminum) is provided in the rotor groove, and a terminal which is mechanically and electrically connected to the ends of the rotor strips is provided on both end faces of the rotor, and is electrically conductive.
  • the problem of manufacturing such a rotor is that the hybrid motor is asynchronously activated by the squirrel cage in the rotor and by the permanent magnet placed in the rotor.
  • the problem of manufacturing such a rotor is: when the aluminum liquid is injected into the rotor slot, the aluminum liquid raises the temperature of the rotor.
  • the permanent magnet buried inside the rotor will lose its magnetic properties due to high temperature.
  • a permanent magnet can be placed in the rotor after the aluminum is injected, but this causes another problem, and the permanent magnet placed in the rotor moves.
  • a self-starting permanent magnet motor rotor structure in which a conductive strip is formed by injecting aluminum liquid into a rotor slot, and a conductive strip protrudes from a rotor core end surface to form a fixed end, and the end turns are additionally manufactured and A fixed end sleeve is provided which is matched with the conductive strip.
  • the permanent magnet is placed in the magnet insertion hole in the rotor core, so that the magnet is not affected by the high temperature, and the end turn is passed through the conductive strip after the magnet is placed.
  • the fixed end projecting beyond the end face of the core is connected to the fixed end of the end turn, without the need for additional support elements, and the fixed end is compacted in the fixed end casing by press fit during assembly.
  • the end turns of this method need to be separately manufactured, and the structure is complicated, the mold cost is increased, and the manufacturing cost of the end turns is increased.
  • a plurality of conductive strips are inserted into the slots provided on the end turns,
  • the conductive strip with the fixed end is matched with the fixed end sleeve of the end turn, the process is complicated and difficult to control, and the connection between the partial conductive strip and the end turn may be not tight, thereby causing an increase in resistance.
  • the object of the present invention is to provide a self-starting permanent magnet motor rotor knot with simple structure, reliable process and low cost. Structure and its manufacturing method.
  • the present invention is implemented as follows:
  • a self-starting permanent magnet motor rotor structure comprising a rotor core, a permanent magnet, a rotor conductive strip and an end turn, a rotor slot and a rotor slot are arranged on the rotor core, a permanent magnet is placed in the magnet slot, and the rotor conductive strip Provided in the rotor slot, the end turns are disposed at both ends of the rotor core, the rotor conductive strips and the end turns form a squirrel cage structure, the rotor conductive strips and the end turns are integrally formed, and the inner diameter of at least one end turn is set to have Sufficient space for mounting a permanent magnet, wherein the rotor further includes at least one closure jaw mated with the at least one end jaw, the outer diameter of the mating at least one closure jaw being tightly coupled to the inner diameter of the at least one end jaw for all or Partially close the magnet slot.
  • a manufacturing method of a self-starting permanent magnet motor rotor having the above structure comprises the following steps: (1) stamping a rotor core, forming a magnet slot and a rotor slot on the rotor core; (2) placing the rotor core The molten metal is poured into the mold, and after the solidification of the molten metal, end turns are formed on both end faces of the rotor core, and conductive strips are formed in the rotor slots, and the conductive strips and the end turns are integrally formed to form a squirrel cage structure, wherein at least one end of the crucible The inner diameter has sufficient space to completely expose the magnet slot; (3) after cooling, the rotor core is taken out from the mold, and a permanent magnet is placed in the magnet slot through at least one end having sufficient space inside the inner diameter; (4) Pressing the closing jaw in at least one end opening having sufficient space for the inner diameter; (5) fixing at least one end opening having a sufficient space to the closing jaw to achieve a tight connection and completely or partially closing the magnet slot.
  • the pouring method of the molten metal is die casting.
  • a convex portion or a concave portion may be disposed on the closed outer cymbal, and the corresponding position of the inner cymbal of the end cymbal is provided with a concave portion or a convex portion, and the convex portion is The recessed portion has no clearance fit.
  • the outer raft of the closed raft is set to be a round defect, and the inner ridge of the end raft is a corresponding round vacancy, and there is no gap fit between the two.
  • the closed cymbal and the end cymbal can be fixed together by rolling, or can be fixed together by an interference fit, or can be tightly connected by using a screw connection, a snapping manner or a card slot manner, or other can achieve close The way to connect.
  • the closed outer cymbal When the rolling method is fixed, the closed outer cymbal can be set with a certain inclination, so that the outer diameter of one side of the closed cymbal is larger than the outer diameter of the other side, wherein the outer side with the larger outer diameter is close to the end surface of the rotor core.
  • the inner cymbal of the end cymbal After rolling the outer cymbal, the inner cymbal of the end cymbal also has a corresponding inclination, and is closely connected with the closed cymbal.
  • This method can better fix the closed jaws and prevent the closed jaws from flying out at high speeds.
  • the inclination angle is 0-20 degrees.
  • the closed jaw is disposed at one end of the rotor core, and another embodiment is provided with a closed jaw at both ends of the rotor core.
  • the end turns and the conductive strips are integrally manufactured, and the problem of increasing the electric resistance is not generated.
  • the permanent magnets are fixed by the closed crucible, the structure is simple, the process is reliable, and the close contact is easily realized, and the manufacturing cost is low.
  • Figure 1 is a cross-sectional view showing a rotor of a first embodiment of the present invention
  • Figure 2 is a cross-sectional view along the line A-A of the rotor cross-sectional view of the first embodiment of the present invention
  • Figure 3 is a perspective view showing the structure of the rotor of the first embodiment of the present invention.
  • Figure 4 is a cross-sectional view of the rotor of the second embodiment of the present invention (before rolling);
  • Figure 5 is a cross-sectional view of the rotor of the second embodiment of the present invention (after rolling);
  • Figure 6 is a partial enlarged view of Figure 5 of a second embodiment of the present invention.
  • Figure 7 is a cross-sectional view showing a rotor of a third embodiment of the present invention.
  • Figure 8 is a schematic view showing the structure of the end turns and the closed jaws of the fourth embodiment of the present invention.
  • Figure 9 is a process flow diagram of the manufacturing method of the present invention.
  • the rotor is composed of a rotor core 1, a terminal 2, a permanent magnet 4, a conductive strip 5 and a closed jaw 3, wherein the rotor core 1 is provided with a magnet slot 6 and a permanent magnet 4
  • the rotor disc 1 is further provided with a rotor groove, and the conductive strip 5 is disposed therein.
  • the end turns 2 are disposed at both ends of the rotor core 1 and are integrally connected with the conductive strips 5 to form a squirrel cage structure.
  • the end turns 2 and the conductive strips 5 are arranged in a manner similar to the split type arrangement, and the rotor resistance is low. , will not increase the resistance due to problems such as poor connection.
  • the manufacturing method comprises the following steps: (1) stamping the rotor core 1 to form a magnet slot 6 and a rotor slot on the rotor core 1; (1) placing the rotor core into a mold for die casting, integrally casting Conductive strips and end turns; (3) placing permanent magnets 4 in the magnet slots; (4) pressing the closed jaws 3 in the end turns 2; (5) fixing the end turns 2 and the closed jaws 3 to achieve a tight connection,
  • the magnet slot 6 is closed in whole or in part. See Figure 9 for the process flow chart.
  • the fixing method can take the rolling method, the interference fit, the threaded connection, the buckle or the card slot, etc., ensuring the close contact between the end ⁇ 2 and the closing ⁇ 3 to improve the rotor resistance and at the same time closing the magnet slot of the rotor core 1 6. Avoid moving the permanent magnet 4 in position during operation.
  • Embodiment 1 As shown in Fig. 3, in this embodiment, both ends of the rotor have sufficient installation space for the magnets, and after the permanent magnets 4 are mounted, the closed jaws 3 are attached to both ends.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the outer cymbal of the closed cymbal has a certain inclination.
  • the closed ⁇ 3 is pressed, as shown in FIG.
  • the end ⁇ 2 is rolled so that the inner cymbal of the end ⁇ 2 is close to the outer cymbal of the closed ⁇ 3, as shown in FIG.
  • This method can better fix the closed jaw 3 and prevent the closed jaw 3 from flying out at high speed.
  • the tilt angle is 0 to 20 degrees.
  • Fig. 6 is a partial enlarged view of Fig. 5, showing the angle of inclination ⁇ of the closed jaw more clearly.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the inner end ⁇ 2 of one end of the rotor core has a small inner diameter, and no magnet installation space is provided.
  • the end plate baffle 7 is placed at the end to close the magnet slot 6 to prevent pouring.
  • the other end of the end ⁇ 2 has a large inner diameter for mounting the permanent magnet 4, and after the permanent magnet 4 is mounted, only the end ⁇ 3 is attached to the end.
  • the closed crucible 3 may also have a certain slope.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the closing jaw 3 is provided with a recessed portion which cooperates with a convex portion on the end jaw 1, and the recessed/raised portion 8 can be used to prevent the rotor from being closed during high speed operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)

Description

一种自起动永磁电机转子结构及其制造方法 技术领域
本发明涉及电机及压缩机领域， 特别是一种自起动永磁电机的转子。 背景技术
在高启动转矩和高运行效率的机器中， 使用混合型电机， 它在起动时有异步电机特 性， 而在连续运行时有同步电机特性。
在混合型电机的转子中， 在转子槽内设有导电和容易成形 （如铝制）的导电条和在 转子两个端面上设置把这些转子条的终端进行机械和电气连接的端圏， 导电条和端圏构 成鼠笼结构， 另外还在转子内部埋入永久磁铁。 混合型电机通过在转子中的鼠笼异步启 动和通过放置在转子内的永久磁铁在启动后同步运行， 制造这类转子的问题是： 将铝液 注入转子槽时， 铝液使转子温度升高， 温度过高会使埋入转子内部的永久磁铁由于高温 丧失磁性。 为解决这个问题， 可在铝注入之后再将永久磁铁放置到转子中， 但这样就会 产生另一个问题， 放置在转子内的永久磁铁会产生移动。 同时为了在注入过程后放置永 久磁铁， 需要按照永久磁铁放置位置对端圏的结构和形状进行改动， 而端圏形状的变化 往往会造成磁通的不规则和转子平衡的破坏。
在现有技术中， 描述了一种自起动永磁电机转子结构， 其导电条通过将铝液注入到 转子槽中生成， 导电条伸出转子铁芯端面而形成固定端， 端圏另外制造且设置有与导电 条相配合的固定端外套， 在注入过程结束后将永久磁铁放置在转子铁芯中的磁铁插入孔 内， 从而使磁铁不受高温影响， 端圏在磁铁放置后通过将导电条伸出到铁芯端面外的固 定端与端圏的固定端外套连接， 无需附加的支持元件， 在装配时通过压配合将固定端压 实在固定端外套内。
但此种方式的端圏需要另外制造， 且结构复杂， 增加了模具成本， 及端圏的制造成 本， 在端圏安装时， 多个导电条要插入到端圏上设置的槽中的同时， 带有固定端的导电 条与端圏的固定端外套配合， 工艺复杂不易控制， 且可能导致部分的导电条与端圏的连 接不紧密， 进而导致电阻的增加。 发明内容
本发明的目的是提供一种结构简单， 工艺可靠、 成本较低的自起动永磁电机转子结 构及其制造方法。
本发明是这样实现的：
一种自起动永磁电机转子结构， 包括转子铁芯、 永久磁铁、 转子导电条和端圏， 转 子铁芯上设置有磁铁插槽和转子槽， 永久磁铁放置在磁铁插槽内， 转子导电条设置在转 子槽内， 端圏设置在所述转子铁芯的两端部， 转子导电条和端圏构成鼠笼结构， 转子导 电条和端圏为一体成型， 至少一个端圏的内径设置为有充足的空间以安装永久磁铁， 其 中转子还包括至少一个封闭圏与该至少一个端圏相配合， 相配合的至少一个封闭圏的外 径与所述至少一个端圏的内径紧密连接用以全部或部分地封闭磁铁插槽。
一种具有上述结构的自起动永磁电机转子的制造方法包括如下步骤： （ 1 )对转子铁 芯进行冲压， 在转子铁芯上形成磁铁插槽和转子槽； （2 )把转子铁芯放入模具内进行浇 注金属液， 金属液凝固后在转子铁芯的两端面形成端圏， 在转子槽内形成导电条， 导电 条和端圏连成一体构成鼠笼结构，其中至少一个端圏的内径具有充足的空间以完全露出 磁铁插槽； （3 )等冷却后， 从模具内取出转子铁芯， 并通过至少一个内径具有充足的空 间的端圏在磁铁插槽内放置永久磁铁； ( 4 )在至少一个内径具有充足空间的端圏内压入 封闭圏； （5 )将至少一个内径具有充足空间的端圏与封闭圏固定， 实现紧密连接， 并全 部或部分封闭磁铁插槽。
其中金属液的浇注方式为压铸。
为实现封闭圏和端圏的周向固定， 可在封闭圏外圏上设置有凸起部分或凹陷部分， 并端圏的内圏相对应的位置设置有凹陷部分或凸起部分， 凸起部分与凹陷部分无间隙配 合。
或封闭圏的外圏设置成为圆缺，端圏的内圏为相对应的圆缺，两者之间无间隙配合。 其中封闭圏与端圏可通过滚压方式固定在一起， 也可通过过盈配合固定在一起， 也 可釆用螺纹连接， 卡扣方式或卡槽方式实现紧密连接， 或釆用其它能实现紧密连接的方 式。
其中釆取滚压方式固定时， 封闭圏外圏可设置具有一定斜度， 从而封闭圏的一侧的 外径大于另一侧的外径， 其中外径较大的一侧贴近转子铁芯的端面， 通过对端圏外圏进 行滚压后， 使端圏的内圏也具有相应的斜度， 且与封闭圏外圏紧密连接。 此种方式能更 好的对封闭圏进行固定， 防止封闭圏在高速运转时飞出。 优选倾斜角度为 0—20度。
一种实施例为封闭圏设置在转子铁芯的一端， 另一种实施例为在转子铁芯的两端都 设置有封闭圏。 本发明中端圏和导电条为一体制造， 不会产生增加电阻的问题， 釆用封闭圏对永久 磁铁进行固定， 结构简单， 工艺可靠且容易实现紧密接触， 制造成本低。 附图说明
图 1 : 本发明第一实施例转子截面图；
图 2 : 本发明第一实施例转子截面图的 A-A剖视图；
图 3: 本发明第一实施例转子爆炸结构图；
图 4 : 本发明第二实施例转子截面图 （进行滚压前）；
图 5 : 本发明第二实施例转子截面图 （进行滚压后）；
图 6 : 本发明第二实施例的图 5的局部放大图；
图 7 : 本发明第三实施例转子截面图；
图 8 : 本发明第四实施例端圏和封闭圏结构示意图；
图 9 : 本发明制造方法工艺流程图。
其中： 1、 转子铁芯； 1、 端圏； 3、 封闭圏； 4、 永久磁铁； 5、 导电条； 6、 磁铁插 槽； 7、 档板； 8、 凹陷 /凸起部分。 具体实施方式
下面结合附图对本发明做详细说明。
如图 1、 图 2所示， 转子由转子铁芯 1、 端圏 2、 永久磁铁 4、 导电条 5和封闭圏 3 构成， 其中转子铁芯 1上设置有磁铁插槽 6 , 永久磁铁 4置于其中， 转子铁饼 1上还设 置有转子槽， 导电条 5设置于其内。 端圏 2设置在转子铁芯 1的两端部， 并与导电条 5 一体连接， 共同构成鼠笼结构， 端圏 2与导电条 5—体化的设置与分体式设置相比， 转 子电阻低， 不会因连接不紧密等问题增加电阻。 其制造方法包括如下步骤： （1 )对转子 铁芯 1进行冲压， 在转子铁芯 1上形成磁铁插槽 6和转子槽； （ 1 )把转子铁芯放入模具 内进行压铸， 一体铸出导电条和端圏； （ 3 )在磁铁插槽内放置永久磁铁 4 ; ( 4 )在端圏 2内压入封闭圏 3; ( 5 )将端圏 2与封闭圏 3固定， 实现紧密连接， 并全部或部分封闭 磁铁插槽 6。 工艺流程图参见图 9。 固定方式可釆取滚压方式、 过盈配合、 螺纹连接、 卡扣或卡槽等， 保证端圏 2和封闭圏 3紧密可靠接触， 以改善转子电阻， 同时封闭转子 铁芯 1的磁铁插槽 6， 避免永久磁铁 4在运行过程中位置移动。
实施例一： 如图 3所示， 本实施例中， 转子的两端都为磁铁留出足够安装空间， 在装入永久磁 铁 4后， 两端都安装上封闭圏 3。
实施例二：
本实施例中， 封闭圏的外圏具有一定斜度， 在安装完永久磁铁 4后， 压入封闭圏 3 , 如图 4所示。 然后对端圏 2进行滚压， 使端圏 2的内圏紧贴封闭圏 3的外圏， 如图 5所 示。 此种方式能更好的对封闭圏 3进行固定， 防止封闭圏 3在高速运转时飞出。 优选倾 斜角度为 0〜20度。 图 6为图 5的局部放大图， 更清晰地标明了封闭圏的倾斜角度 θ。
实施例三：
如图 7所示， 本实施例中， 转子铁芯的一端的端圏 2内径小， 没有设置磁铁安装空 间， 在进行浇注前， 此端放置挡板 7用以封闭磁铁插槽 6 , 防止浇注时铝液进入磁铁插 槽内， 另一端的端圏 2内径大， 用于安装永久磁铁 4 , 在装入永久磁铁 4后， 仅此端安 装上封闭圏 3。 此实施例中， 封闭圏 3也可具有一定斜度。
实施例四：
如图 8所示， 本实施例中， 封闭圏 3上设置有凹陷部分与端圏 1上的凸起部分相配 合， 该凹陷 /凸起部分 8可用于防止在转子在高速运转过程中， 封闭圏 3与端圏 2之间 周向的移动。 也可釆用封闭圏 3的外圏和端圏 2的内圏做成圆缺的形式。
以上所述仅为本发明的较佳实施例， 本发明的保护范围并不局限于此， 任何基于本发明 技术方案上的等效变换均属于本发明保护范围之内。

Claims

权利要求
1、 一种自起动永磁电机转子结构， 包括转子铁芯、 永久磁铁、 转子导电条和端圏， 其中所述转子铁芯上设置有磁铁插槽和转子槽， 所述永久磁铁放置在所述磁铁插槽内， 所述转子导电条设置在所述转子槽内， 所述端圏设置在所述转子铁芯的两端部， 所述转 子导电条和所述端圏构成鼠笼结构， 其特征在于： 所述转子导电条和所述端圏为一体成 型， 至少一个所述端圏的内径设置为有充足的空间以安装所述永久磁铁至所述磁铁插槽 内， 其中所述转子还包括至少一个封闭圏与所述至少一个内径设置为有充足空间的端圏 相配合， 所述相配合的至少一个封闭圏的外径与所述至少一个内径设置为有充足空间的 端圏的内径紧密连接以全部或部分地封闭所述磁铁插槽。
2、 根据权利要求 1所述的自起动永磁电机转子结构， 其特征在于： 所述封闭圏的 外圏上设置有凸起部分 /凹陷部分，所述相配合的端圏的内圏相对应的位置设置有凹陷部 分 /凸起部分， 所述凸起部分与所述凹陷部分无间隙配合。
3、 根据权利要求 1所述的自起动永磁电机转子结构， 其特征在于： 所述封闭圏的 外圏为圆缺， 所述相配合的端圏的内圏为相对应的圆缺， 所述封闭圏的圆缺部分与所述 端圏的圆缺部分无间隙配合。
4、 根据权利要求 1所述的自起动永磁电机转子结构， 其特征在于： 所述相配合的 所述封闭圏和所述端圏通过滚压方式固定。
5、 根据权利要求 4所述的自起动永磁电机转子结构， 其特征在于： 所述封闭圏外 圏具有一定斜度， 从而所述封闭圏的一侧的外径大于另一侧的外径， 其中所述外径较大 的一侧贴近所述转子铁芯的端面。
6、 根据权利要求 5所述的自起动永磁电机转子结构， 其特征在于： 所述封闭圏外 圏倾斜角度为 0~20度。
7、 根据权利要求 1至 3中任一所述的自起动永磁电机转子结构， 其特征在于： 所 述相配合的所述封闭圏和所述端圏之间通过过盈配合固定。
8、 根据权利要求 1所述的自起动永磁电机转子结构， 其特征在于： 所述相配合的 所述封闭圏和所述端圏之间通过螺紋连接固定。
9、 根据权利要求 1所述的自起动永磁电机转子结构， 其特征在于： 所述相配合的 所述封闭圏和所述端圏之间通过卡槽方式固定。
10、 一种自起动永磁电机转子的制造方法，所述自起动永磁电机转子具有权利要求 1中所述的结构， 所述制造方法包括如下步骤：
( 1 )对转子铁芯进行冲压， 在所述转子铁芯上形成磁铁插槽和转子槽；
( 2 )把转子铁芯放入模具内进行浇注金属液， 所述金属液凝固后在所述转子铁芯 的两端面形成端圏， 在所述转子槽内形成导电条， 所述导电条和所述端圏连成一体构成 鼠笼结构， 其中至少一个端圏的内径具有充足的空间以完全露出磁铁插槽；
( 3 )等冷却后， 从模具内取出转子铁芯， 并通过所述至少一个内径具有充足的空 间的端圏在所述磁铁插槽内放置永久磁铁；
( 4 )在所述至少一个内径具有充足空间的端圏内压入封闭圏；
( 5 )将所述至少一个内径具有充足空间的端圏与所述封闭圏固定， 实现紧密连接， 并全部或部分封闭所述磁铁插槽。
11、 根据权利要求 10所述的一种自起动永磁电机转子的制造方法， 其特征在于： 所述封闭圏的外圏为圆缺，所述至少一个内径具有充足空间的端圏的内圏为相对应的圆 缺， 所述封闭圏的圆缺部分与所述端圏的圆缺部分无间隙配合。
12、 根据权利要求 10至 11中任一所述的一种自起动永磁电机转子的制造方法， 其 特征在于： 所述至少一个内径具有充足空间的端圏与所述封闭圏的固定方式为通过滚压 固定。
13、 根据权利要求 12所述的一种自起动永磁电机转子的制造方法， 其特征在于： 所述封闭圏外圏具有一定斜度， 从而所述封闭圏的一侧的外径大于另一侧的外径， 其中 所述外径较大的一侧贴近所述转子铁芯的端面， 通过对端圏外圏进行滚压， 使所述端圏 的内圏也具有相应的斜度， 且与所述封闭圏外圏紧密连接。
14、 根据权利要求 10所述的一种自起动永磁电机转子的制造方法， 其特征在于： 所述至少一个内径具有充足空间的端圏与所述封闭圏的固定方式为过盈配合。
PCT/CN2010/078151 2009-10-27 2010-10-27 一种自起动永磁电机转子结构及其制造方法 Ceased WO2011050722A1 (zh)

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Citations (3)

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Publication number Priority date Publication date Assignee Title
JPH09308195A (ja) * 1996-05-13 1997-11-28 Meidensha Corp 回転電機の回転子
WO2008012269A1 (en) * 2006-07-25 2008-01-31 Arcelik Anonim Sirketi An electric motor
CN201584832U (zh) * 2009-10-27 2010-09-15 珠海格力电器股份有限公司 自起动永磁电机转子结构

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09308195A (ja) * 1996-05-13 1997-11-28 Meidensha Corp 回転電機の回転子
WO2008012269A1 (en) * 2006-07-25 2008-01-31 Arcelik Anonim Sirketi An electric motor
CN201584832U (zh) * 2009-10-27 2010-09-15 珠海格力电器股份有限公司 自起动永磁电机转子结构

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