WO2019024688A1 - 电机定子铁芯冲片、电机定子铁芯和压缩机 - Google Patents

电机定子铁芯冲片、电机定子铁芯和压缩机 Download PDF

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Publication number
WO2019024688A1
WO2019024688A1 PCT/CN2018/096303 CN2018096303W WO2019024688A1 WO 2019024688 A1 WO2019024688 A1 WO 2019024688A1 CN 2018096303 W CN2018096303 W CN 2018096303W WO 2019024688 A1 WO2019024688 A1 WO 2019024688A1
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Prior art keywords
stator core
teeth
motor stator
motor
reference axis
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PCT/CN2018/096303
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English (en)
French (fr)
Inventor
王飞
陈金涛
Original Assignee
广东威灵电机制造有限公司
美的威灵电机技术（上海）有限公司
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Publication of WO2019024688A1 publication Critical patent/WO2019024688A1/zh

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    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator

Definitions

  • the present invention relates to the field of electromechanical, and in particular to a stator core of a motor and a stator core and a compressor of the motor to which the stator core of the motor is applied.
  • Rotating electrical machines are an important type of motor, including stators and rotors.
  • the rotor of the motor disposed in the compressor generally adopts a cantilever structure, and since it is supported only by the one-side bearing, the air gap needs to be adjusted by a tooling such as a feeler gauge during the installation of the rotor.
  • the outer arc of the existing rotor core must have a concentric arc with a large span.
  • the existence of the arc makes the rotor optimization difficulty increase, and it is difficult to reduce the air gap magnetic field harmonics.
  • the correspondence between the outer circumference of the rotor and the inner circumference of the stator is a point-to-face relationship, and it is difficult to adjust the air gap precision. Therefore, how to control the air gap accuracy more easily while reducing the harmonics of the air gap magnetic field has become a technical problem to be solved in the field.
  • the object of the present invention is to overcome the problem of the prior art that the air gap accuracy cannot be controlled while reducing the air gap magnetic field harmonics, and the stator core punching piece of the motor is provided, and the stator iron of the motor is formed by using the stator core punching piece of the motor.
  • the core is capable of better concentric positioning while reducing the air gap magnetic field harmonics to control air gap accuracy.
  • an aspect of the present invention provides an electric motor stator core punching piece including a yoke portion, a reference axis, and a plurality of teeth disposed on the yoke portion and protruding toward the reference axis, the plurality of teeth At least one arc top tooth and one rear shift tooth are included, and an end surface of the arc top tooth facing the reference axis is a circular arc surface, and the circular arc surface forms a center hole centered on the reference axis, the rear An end face of the shifting tooth that faces the reference axis does not coincide with an end face of the arc tip tooth and is at least partially offset outward.
  • the tooth includes a protruding portion that is connected at one end to the yoke portion and extends in a radial direction, and a resistance line that is connected to the other end of the protruding portion and protrudes in a circumferential direction of the center hole a coil groove is formed between adjacent teeth, and the coil groove has an opening that communicates with the center hole.
  • the yoke portion is an annular yoke portion, and the plurality of teeth are uniformly disposed on an inner circumferential surface of the annular yoke portion in the circumferential direction.
  • the arc top teeth are at least two, and two adjacent said top teeth are spaced apart by N said rear shifting teeth, wherein N is a positive integer greater than 1.
  • both the arc top teeth and the rear shifting teeth are M and are alternately arranged on the inner circumferential surface of the annular yoke portion, wherein M is a positive integer.
  • the rearward shifting teeth comprise flat top teeth and/or convex top teeth
  • An end surface of the flat top tooth facing the reference axis is a plane parallel to or coincident with an outer cut surface of the center hole, the convex arc top tooth.
  • An end surface of the convex arc top tooth facing the reference axis is a circular arc surface, and a center of the circular arc surface is outside the center hole.
  • a second aspect of the present invention provides a stator core for an electric machine, comprising a plurality of stacked stator core sheets of the motor according to any one of the above aspects.
  • another motor stator core comprising a plurality of stacked motor stator core pieces according to the above technical solution, and N pitches between adjacent ones of the motor stator core pieces Angle or 1 pitch angle.
  • a second aspect of the present invention provides a motor stator core, comprising a plurality of stacked motor stator cores according to the above technical solution, wherein at least the stator iron of the motor is in the motor stator core A plurality of the stator core pieces of the core along one end of the reference axis are rotated by N pitch angles or 1 pitch angle.
  • a third aspect of the present invention provides a compressor, wherein the compressor is provided with a motor stator core punch according to any one of the above aspects, or the motor according to any one of the above aspects. Stator core.
  • the arcuate surface of the arc-shaped tooth faces the outer peripheral surface of the rotor, so that the air gap can be easily adjusted by using a tool such as a feeler gauge to ensure concentric positioning of the stator and the rotor.
  • a tool such as a feeler gauge to ensure concentric positioning of the stator and the rotor.
  • the rear teeth of the stator core of the motor are provided, it is possible to overlap the outer surface of the plane from the center hole or offset from the outer surface by a certain distance, thereby reducing the harmonic content of the air gap magnetic field. Reduce the vibration noise of the motor.
  • Figure 1 is a plan view showing a specific embodiment of a stator core punch for an electric motor according to the present invention.
  • FIG. 2 is a top plan view of another embodiment of the stator core punch of the motor of the present invention.
  • FIG 3 is a perspective view of a specific embodiment of the stator core of the motor of the present invention.
  • FIG. 4 is a partial enlarged view of the tooth 30 of the embodiment shown in FIG. 3.
  • Fig. 5 is a perspective view showing another embodiment of the stator core of the motor of the present invention.
  • Figure 6 is a partial enlarged view of the tooth 30 of the embodiment shown in Figure 5.
  • Fig. 7 is a schematic view showing the state of use of the stator core of the motor of the present invention.
  • orientation words such as “up, down, left, and right” as used generally refer to the top, bottom, left, and right of the drawings without reference to the contrary.
  • “Inside and outside” refers to the inside and outside of the contour of the component itself.
  • first and “second” are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • the present invention provides a motor stator core punching piece comprising a yoke 10, a reference axis 20, and a plurality of teeth 30 disposed on the yoke 10 and projecting toward the reference axis 20, the plurality of teeth 30 including at least one arc top tooth 31 And a rear shifting tooth, the end surface of the arc top tooth 31 facing the reference axis 20 is a circular arc surface, the arcuate surface forming a central hole 50 with the reference axis 20 as a central axis, the backward shifting tooth facing the reference axis
  • the end face of 20 does not coincide with the end face of the arc top tooth 31 and is at least partially offset outward.
  • the reference axis 10 is a central axis of rotation of the rotor 3 that rotates in the stator 4 composed of the stator core of the motor.
  • the central aperture 50 is concentric with the inner circle of the stator.
  • the stator core piece of the motor has the same thickness and is of the same material, such as a cold rolled silicon steel sheet.
  • the air gap can be easily adjusted by a tool such as a feeler gauge, and the concentric positioning of the stator and the rotor can be ensured.
  • the rear teeth of the stator core of the motor are provided, it is possible to overlap the outer surface of the plane from the center hole 50 or offset from the outer surface by a certain distance, thereby reducing the harmonic content of the air gap magnetic field. Reduce the vibration noise of the motor.
  • the tooth 30 includes a projecting portion 60 whose one end is connected to the yoke portion 10 and extends in the radial direction, and is connected to the other end of the projecting portion 60 and along A line-blocking portion 70 that protrudes in the circumferential direction of the center hole 50.
  • the projecting portion 60 is circularly connected to the yoke portion 10, and the outer contours of the projecting portion 60 and the wire blocking portion 70 are formed in a symmetrical pattern.
  • a wire loop groove 40 is formed between adjacent teeth 30, and the coil groove 40 has an opening that communicates with the center hole 50.
  • the yoke portion 10 is connected to the plurality of teeth 30 and can have various shapes.
  • the yoke portion 10 is an annular yoke portion, and the plurality of teeth 30 are uniformly disposed in the circumferential direction on the inner circumferential surface of the annular yoke portion. .
  • the ring-shaped yoke portion 10 is used at most.
  • the arc top teeth 31 are at least two, and the two adjacent arc top teeth 31 are spaced apart by N said rear shifting teeth, wherein N is a positive integer greater than 1. For example, it can be separated by 2, 3 or more.
  • both the arc top teeth 31 and the rear shifting teeth are M as shown in FIGS. 1 and 2, and are alternately arranged on the inner peripheral surface of the annular yoke portion, wherein M is a positive integer. That is, the arc top teeth 31 and the rear shift teeth are arranged in pairs in the circumferential direction.
  • the rearward shifting teeth can be of various curved surfaces as long as they are at least partially offset from the outer side of the central bore 50.
  • the rearward shifting teeth are flat top teeth 32, and the end faces of the flat top teeth 32 facing the reference axis 20 are plane. The plane is parallel or coincident with the outer face of the central aperture 50.
  • the rearward shifting teeth are convex arcing top teeth 34.
  • the end surface of the convex arc tip tooth 34 facing the reference axis 20 is a circular arc surface whose center is outside the center hole 50.
  • the present invention also provides a stator core for an electric machine, the stator core of the motor comprising a plurality of stacked stator core pieces of the motor according to any one of the above aspects.
  • the stator core piece of the motor can be stacked in various combinations, and the stator core of the motor can be formed by the existing method which can be used for the combination of the core sheets.
  • the stator core of the motor includes a plurality of stacked stator core pieces of the motor according to the above technical solution, and the N pitch angles between the adjacent stator windings of the motor or 1 pitch angle.
  • the arc top teeth 31 and the rear shifting teeth are both six, and are alternately arranged on the inner circumferential surface of the annular yoke portion adjacent to the motor stator core punching piece. Rotate 1 pitch angle.
  • At least one of the motor stator core pieces of the motor stator core piece at one end of the motor stator core along the reference axis 20 is rotated by N pitch angles or 1 pitch angle.
  • the arc top teeth 31 and the rear shifting teeth are six, and are alternately arranged on the inner circumferential surface of the annular yoke portion, and are located along the reference axis 20 of the stator core of the motor.
  • the five motor stator core punches at one end are rotated by one pitch angle.
  • a plurality of motor stator core punches that are rotated by N pitch angles or one pitch angle are used as a rotary group, and a plurality of motor stator core punches that are not rotated are used as an unrotated group, and the above-mentioned combination of rotations is not
  • the swivel groups can be stacked alternately.
  • the present invention also provides a compressor in which the stator core piece of the motor according to any one of the above aspects is provided, or the stator core of the motor according to any one of the above aspects. .

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

一种电机定子铁芯冲片、电机定子铁芯和压缩机，该电机定子铁芯冲片包括轭部(10)、基准轴线(20)和设置在所述轭部(10)并向所述基准轴线(20)突出的多个齿(30)，所述多个齿(30)中至少包括一个弧顶齿(31)和一个后移齿，所述弧顶齿(31)的朝向所述基准轴线(20)的端面为圆弧面，该圆弧面形成以所述基准轴线(20)为中心轴的中心孔(50)，所述后移齿的朝向所述基准轴线(20)的端面不与所述弧顶齿(31)的端面重合，且至少部分向外侧偏移，从而能够在降低气隙磁场谐波的同时更好地进行同心定位，以控制气隙精度。

Description

电机定子铁芯冲片、电机定子铁芯和压缩机 技术领域
本发明涉及机电领域，具体地涉及电机定子铁芯冲片和应用有该电机定子铁芯冲片的电机定子铁芯和压缩机。
背景技术
电机作为重要的能量转换装置，广泛地应用在电动机驱动的各种生产机械和装备中。旋转电机作为电机的重要类型，包括定子和转子。而设置在压缩机中的电机转子的一般采用悬臂结构，由于只通过单边轴承支撑，因此在转子安装过程中，需要通过塞尺等工装调整气隙。
但是，现有的转子铁芯的外圆弧必须存在较大跨角的同心圆弧，该圆弧的存在使得转子优化难度增加，很难降低气隙磁场谐波。为了降低气隙磁场谐波，将转子外圆弧设置成偏心结构，则使转子的外周和定子的内周之间的对应关系是点对面的关系，很难调整气隙精度。因此，如何在降低气隙磁场谐波的同时，能够更加容易地控制气隙精度就成为了本领域亟待解决的技术问题。
发明内容
本发明的目的是为了克服现有技术存在的无法在降低气隙磁场谐波的同时控制气隙精度的问题，提供电机定子铁芯冲片，利用该电机定子铁芯冲片组成的电机定子铁芯能够在降低气隙磁场谐波的同时更好地进行同心定位，以控制气隙精度。
为了实现上述目的，本发明一方面提供一种电机定子铁芯冲片，包括轭部、基准轴线和设置在所述轭部并向所述基准轴线突出的多个齿，所述 多个齿中至少包括一个弧顶齿和一个后移齿，所述弧顶齿的朝向所述基准轴线的端面为圆弧面，该圆弧面形成以所述基准轴线为中心轴的中心孔，所述后移齿的朝向所述基准轴线的端面不与所述弧顶齿的端面重合，且至少部分向外侧偏移。
优选地，所述齿包括一端连接在所述轭部上且沿径向方向延伸的伸出部，和连接在所述伸出部的另一端且沿所述中心孔的周向突出的阻线部，相邻所述齿之间形成有线圈槽，所述线圈槽具有连通于所述中心孔的开口。
优选地，所述轭部为环状轭部，所述多个齿沿周向均匀配置在所述环状轭部的内周面。
优选地，所述弧顶齿为至少两个，两个相邻的所述弧顶齿之间间隔有N个所述后移齿，其中N为大于1的正整数。
优选地，所述弧顶齿和所述后移齿均为M个，且相互交替配置在所述环状轭部的内周面，其中M为正整数。
优选地，所述后移齿包括平顶齿和/或凸弧顶齿，
所述平顶齿的朝向所述基准轴线的端面为平面，该平面平行于或者重合于所述中心孔的外切面，所述凸弧顶齿。所述凸弧顶齿朝向所述基准轴线的端面为圆弧面，该圆弧面的圆心在所述中心孔外。
本发明第二方面提供一种电机定子铁芯，包括叠置的多个根据上述技术方案中任意一项所述电机定子铁芯冲片。
本发明第二方面提供另一种电机定子铁芯，包括叠置的多个根据上述技术方案所述电机定子铁芯冲片，相邻所述电机定子铁芯冲片之间回转N个齿距角度或1个齿距角度。
本发明第二方面提供再一种电机定子铁芯，包括叠置的多个根据上述技术方案所述电机定子铁芯冲片，所述电机定子铁芯冲片中的至少位于所述电机定子铁芯的沿所述基准轴线一端的多个所述电机定子铁芯冲片回转N个齿距角度或1个齿距角度。
本发明第三方面提供一种压缩机，所述压缩机中设置有根据上述技术方案中任意一项所述的电机定子铁芯冲片，或者根据权上述技术方案中任意一项所述的电机定子铁芯。
通过上述技术方案，通过弧顶齿的圆弧面与转子的外周面相对，从而能够容易地利用塞尺等工装调整气隙，保证定子和转子的同心定位。而且，由于电机定子铁芯冲片中设置有后移齿，从而能够重合于平面从中心孔的外切面，或者从该外切面向外侧偏离一定距离，从而能够降低气隙磁场的谐波含量，降低电机的振动噪音。
附图说明
图1是本发明所述电机定子铁芯冲片的一种具体实施方式的俯视图。
图2是本发明所述电机定子铁芯冲片的另一种具体实施方式的俯视图。
图3是本发明所述电机定子铁芯的一种具体实施方式的立体图。
图4是图3所示具体实施方式的齿30的局部放大图。
图5是本发明所述电机定子铁芯的另一种具体实施方式的立体图。
图6是图5所示具体实施方式的齿30的局部放大图。
图7是本发明所述电机定子铁芯的使用状态示意图。
附图标记说明
3  转子                      4   定子
5  第一定子交错铁芯冲片      6   第二定子交错铁芯冲片
10 轭部
20 基准轴线                  30  齿
31 弧顶齿                    32  平顶齿
34 凸弧顶齿
40 线圈槽                    50  中心孔
60 伸出部                    70  阻线部
具体实施方式
在本发明中，在未作相反说明的情况下，使用的方位词如“上、下、左、右”通常是指参考附图的上、下、左、右。“内、外”是指相对于部件本身轮廓的内、外。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
本发明提供一种电机定子铁芯冲片，包括轭部10、基准轴线20和设置在轭部10并向基准轴线20突出的多个齿30，多个齿30中至少包括一个弧顶齿31和一个后移齿，弧顶齿31的朝向基准轴线20的端面为圆弧面，该圆弧面形成以基准轴线20为中心轴的中心孔50，所述后移齿的朝向所述基准轴线20的端面不与弧顶齿31的端面重合，且至少部分向外侧偏移。
其中，基准轴线10为在由所述电机定子铁芯构成的定子4中旋转的转子3的旋转中心轴。如图7所示，所述中心孔50与定子内圆同心。优选电机定子铁芯冲片的厚度相同，且为同种材料，例如冷轧硅钢片。
通过弧顶齿31的圆弧面与转子3的外周面相对，从而能够容易地利用塞尺等工装调整气隙，保证定子和转子的同心定位。而且，由于电机定子铁芯冲片中设置有后移齿，从而能够重合于平面从中心孔50的外切面，或者从该外切面向外侧偏离一定距离，从而能够降低气隙磁场的谐波含量，降低电机的振动噪音。
作为一种具体实施方式，如图1和图2所示，齿30包括一端连接在轭部10上且沿径向方向延伸的伸出部60，和连接在伸出部60的另一端且沿中心孔50的周向突出的阻线部70。伸出部60圆过渡地连接在轭部10上，伸出部60和阻线部70的外轮廓形成为对称图形。相邻齿30之间形成有线 圈槽40，线圈槽40具有连通于中心孔50的开口。在本发明中，轭部10连接有多个齿30，并能够为各种形状，优选轭部10为环状轭部，多个齿30沿周向均匀配置在环状轭部的内周面。而在旋转电机中，最多使用的是圆环状的轭部10。
弧顶齿31为至少两个，两个相邻的弧顶齿31之间间隔有N个所述后移齿，其中N为大于1的正整数。例如能够间隔2个、3个或更多。优选如图1和图2所示弧顶齿31和后移齿均为M个，且相互交替配置在所述环状轭部的内周面，其中M为正整数。即弧顶齿31和后移齿成对沿周向配置。
所述后移齿能够为各种曲面，只要其至少部分从所述中心孔50的外切面向外侧偏移即可。作为本发明的一种具体实施方式，即第一定子交错铁芯冲片5，如图1所示，后移齿为平顶齿32，平顶齿32的朝向基准轴线20的端面为平面，该平面平行于或者重合于所述中心孔50的外切面。
作为本发明的另一种实施方式，即第二定子交错铁芯冲片6，如图2所示，所述后移齿为凸弧顶齿34。该凸弧顶齿34朝向基准轴线20的端面为圆弧面，该圆弧面的圆心在中心孔50外。
另外，本发明还提供一种电机定子铁芯，该电机定子铁芯包括叠置的多个根据上述技术方案任意一项所述电机定子铁芯冲片。电机定子铁芯冲片能够各种组合排列形式方式叠置，并利用现有的能够用于铁芯冲片结合的方法形成电机定子铁芯。
作为一种优选的实施方式，电机定子铁芯包括叠置的多个根据上述技术方案所述电机定子铁芯冲片，相邻所述电机定子铁芯冲片之间回转N个齿距角度或1个齿距角度。如图3和图4所示，弧顶齿31和后移齿均为6个，且相互交替配置在所述环状轭部的内周面，相邻所述电机定子铁芯冲片之间回转1个齿距角度。
作为另一种优选实施方式，所述电机定子铁芯冲片中的至少位于所述电机定子铁芯的沿基准轴线20一端的多个所述电机定子铁芯冲片回转N个 齿距角度或1个齿距角度。如图5和图6所示，弧顶齿31和后移齿均为6个，且相互交替配置在所述环状轭部的内周面，位于所述电机定子铁芯的沿基准轴线20一端的5个电机定子铁芯冲片回转1个齿距角度。
也就是说，将回转N个齿距角度或1个齿距角度的多个电机定子铁芯冲片作为回转组，未回转的多个电机定子铁芯冲片作为未回转组，上述回转组合未回转组能够交替叠置。
本发明还提供一种压缩机，所述压缩机中设置有根据上述技术方案中任意一项所述的电机定子铁芯冲片，或者根据上述技术方案中任意一项所述的电机定子铁芯。
以上结合附图详细描述了本发明的优选实施方式，但是，本发明并不限于此。在本发明的技术构思范围内，可以对本发明的技术方案进行多种简单变型，包括各个具体技术特征以任何合适的方式进行组合。为了避免不必要的重复，本发明对各种可能的组合方式不再另行说明。但这些简单变型和组合同样应当视为本发明所公开的内容，均属于本发明的保护范围。

Claims (10)

  1. 一种电机定子铁芯冲片，其特征在于，包括轭部(10)、基准轴线(20)和设置在所述轭部(10)并向所述基准轴线(20)突出的多个齿(30)，所述多个齿(30)中至少包括一个弧顶齿(31)和一个后移齿，
    所述弧顶齿(31)的朝向所述基准轴线(20)的端面为圆弧面，该圆弧面形成以所述基准轴线(20)为中心轴的中心孔(50)，
    所述后移齿的朝向所述基准轴线(20)的端面不与所述弧顶齿(31)的端面重合，且至少部分向外侧偏移。
  2. 根据权利要求1所述的电机定子铁芯冲片，其特征在于，所述齿(30)包括一端连接在所述轭部(10)上且沿径向方向延伸的伸出部(60)，和连接在所述伸出部(60)的另一端且沿所述中心孔的周向突出的阻线部(70)，相邻所述齿(30)之间形成有线圈槽(40)，所述线圈槽(40)具有连通于所述中心孔(50)的开口。
  3. 根据权利要求1所述的电机定子铁芯冲片，其特征在于，所述轭部(10)为环状轭部，所述多个齿(30)沿周向均匀配置在所述环状轭部的内周面。
  4. 根据权利要求1-3中任意一项所述的电机定子铁芯冲片，其特征在于，所述弧顶齿(31)为至少两个，两个相邻的所述弧顶齿(31)之间间隔有N个所述后移齿，其中N为大于1的正整数。
  5. 根据权利要求1-3中任意一项所述的电机定子铁芯冲片，其特征在于，所述弧顶齿(31)和所述后移齿均为M个，且相互交替配置在所述环状轭部的内周面，其中M为正整数。
  6. 根据权利要求1-3中任意一项所述的电机定子铁芯冲片，其特征在于，所述后移齿包括平顶齿(32)和/或凸弧顶齿(34)，
    所述平顶齿(32)的朝向所述基准轴线(20)的端面为平面，该平面平行于或者重合于所述中心孔(50)的外切面，
    所述凸弧顶齿(34)。所述凸弧顶齿(34)朝向所述基准轴线(20)的端面为圆弧面，该圆弧面的圆心在所述中心孔(50)外。
  7. 一种电机定子铁芯，其特征在于，包括叠置的多个根据权利要求1-6中任意一项所述电机定子铁芯冲片。
  8. 一种电机定子铁芯，其特征在于，包括叠置的多个根据权利要求4或5所述电机定子铁芯冲片，相邻所述电机定子铁芯冲片之间回转N个齿距角度或1个齿距角度。
  9. 一种电机定子铁芯，其特征在于，包括叠置的多个根据权利要求4或5所述电机定子铁芯冲片，所述电机定子铁芯冲片中的至少位于所述电机定子铁芯的沿所述基准轴线(20)一端的多个所述电机定子铁芯冲片回转N个齿距角度或1个齿距角度。
  10. 一种压缩机，其特征在于，所述压缩机中设置有根据权利要求1-6中任意一项所述的电机定子铁芯冲片，或者根据权利要求7-9中任意一项所述的电机定子铁芯。
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