WO2021139060A1 - 洗衣机用电机 - Google Patents

洗衣机用电机 Download PDF

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Publication number
WO2021139060A1
WO2021139060A1 PCT/CN2020/088742 CN2020088742W WO2021139060A1 WO 2021139060 A1 WO2021139060 A1 WO 2021139060A1 CN 2020088742 W CN2020088742 W CN 2020088742W WO 2021139060 A1 WO2021139060 A1 WO 2021139060A1
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Prior art keywords
washing machine
magnetic poles
mounting portion
magnetic pole
magnetic
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PCT/CN2020/088742
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English (en)
French (fr)
Inventor
沈恩明
沈以撒
沈荣泉
林谦元
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湖州南洋电机有限公司
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Publication of WO2021139060A1 publication Critical patent/WO2021139060A1/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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • 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
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/187—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to inner stators
    • 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
    • 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
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2786—Outer rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the invention belongs to the field of motors for washing machines.
  • the motor is the core component that drives the washing machine. Its structure includes a stator and a rotor coaxial with the stator; the structure of the stator includes a ring-shaped mounting part with multiple connecting parts, and the outside of the mounting part is usually provided with 18 Magnetic poles.
  • the motor used in the washing machine is a very mature component. It has been developed for many years, and its reliability has been improved to a very high level. The service life is quite long. This is an important guarantee for the washing machine to maintain a long life. However, with the improvement of living standards, people’s requirements for washing machines are not only limited to long life, but also have higher requirements for quietness and convenience. Motors are an important source of noise in washing machines. After inspection, the current The noise is around 68db, the noise is loud, resulting in poor mute effect of the washing machine. Therefore, the conventional motor for washing machine has the disadvantage of high noise.
  • the object of the present invention is to provide a motor for washing machine.
  • the invention has the advantage of low noise.
  • a washing machine motor including a stator and a rotor
  • the stator includes a ring-shaped mounting part, 21-26 pairs of magnetic poles are arranged on the outside of the mounting part, and a plurality of connections evenly distributed around the axis of the mounting part are provided on the mounting part unit.
  • the magnetic pole includes a plurality of first magnetic poles arranged outside the mounting part and a second magnetic pole arranged outside the first magnetic poles, and the second magnetic poles are fixed to the inner side wall of the rotor.
  • 24 pairs of magnetic poles are provided on the outer side of the mounting part.
  • the 24 pairs of magnetic poles are composed of 36 first magnetic poles and 12 second magnetic poles.
  • the first magnetic pole coils, the second magnetic poles Arc-shaped magnet.
  • the connecting portion includes a recessed portion on the mounting portion, and a connecting hole is provided in the recessed portion, and the distance between the connecting hole and the outer peripheral surface of the mounting portion is less than the length of the first magnetic pole.
  • the distance between the connecting hole and the outer peripheral surface of the mounting portion is 30-34 mm, and the length of the first magnetic pole is 34.1-37 mm.
  • the distance between the connecting hole and the outer peripheral surface of the mounting portion is 31 mm, and the length of the magnetic pole is 34.5 mm.
  • the mounting part is provided with a positioning hole for connecting with the bottom of the washing machine tub.
  • the present invention is an improvement on the basis of the existing washing machine motor.
  • the first improvement is to limit the number of magnetic poles
  • the second improvement is to limit the distance between the connecting part and the outer peripheral surface of the mounting part. Less than the length of the magnetic pole, through the first and second improvements, the noise of the motor can be significantly reduced.
  • the noise generated by the work is about 55db, which is 18db lower than the existing motor. The reduction is very large. Improvements are the main improvement points of the present invention.
  • the third improvement is to set a positioning hole on the mounting part, and correspondingly, a positioning column matching the positioning hole should be added to the bottom of the washing machine tub.
  • One of the functions of the positioning hole is to increase the installation accuracy of the motor on the bottom of the washing machine tub.
  • the second is to prevent the reverse assembly of the motor.
  • the positioning column interferes with the rotor.
  • the motor cannot be placed flat on the bottom of the washing machine tub for fixing. Only when the motor is assembled to the bottom of the washing machine tub, the positioning The column can be inserted into the positioning hole, and the motor can be placed flat on the bottom of the washing machine tub for fixing, thereby reducing the possibility of assembly errors by workers.
  • the present invention has the advantage of low noise.
  • Fig. 1 is a perspective view of the present invention in a front view direction.
  • Figure 2 is a rear view of the stator.
  • Figure 3 is a schematic view of the structure of the bottom of the washing machine tub.
  • Figure 4 is a noise comparison chart.
  • the marks in the drawings are: 101-mounting part, 102-first magnetic pole, 103-connection part, 104-connection hole, 105-positioning hole, 106-recess, 2-rotor, 201-second magnetic pole, 301- Mounting hole, 302-positioning post.
  • a washing machine motor as shown in Figure 1, includes a stator 1 and a rotor 2.
  • the rotor 2 is a cylindrical shape with an open top, and a drive shaft that rotates through the stator is provided in the middle of the bottom surface.
  • the stator 1 includes a ring-shaped mounting portion 101 and a mounting portion 101. 24 pairs of magnetic poles are provided on the outer side of the, and the mounting part 101 is provided with 4 connecting parts 103 evenly distributed around the axis of the mounting part 101.
  • the magnetic pole includes a plurality of first magnetic poles 102 arranged outside the mounting portion 101 and a second magnetic pole 201 arranged outside the first magnetic pole 102, and the second magnetic pole 201 is fixed to the inner side wall of the rotor 2.
  • the 24 pairs of magnetic poles are composed of 36 first magnetic poles 102 and 12 second magnetic poles 201.
  • the first magnetic pole 102 is a coil of copper wire
  • the second magnetic pole 201 is an arc-shaped magnetic steel.
  • Each second magnetic pole 201 corresponds to four first magnetic poles 102, that is, with four adjacent first magnetic poles 102 as a group, the first magnetic pole 102 located in the middle is located in the range of the wrap angle corresponding to the second magnetic pole 201 Only half of the first magnetic pole 102 on both sides is within the wrap angle range of the second magnetic pole 201, and the remaining part is corresponding to the adjacent second magnetic pole 201, so on the basis of 36 first magnetic poles 102 and 12 second magnetic poles 201 Each second magnetic pole 201 can correspond to four first magnetic poles 102, thereby generating 24 pairs of magnetic poles.
  • the connecting portion 103 includes a recessed portion 106 on the mounting portion 101.
  • the recessed portion 106 is provided with a connecting hole 104.
  • the distance between the connecting hole 104 and the outer peripheral surface of the mounting portion 101 is less than the length of the magnetic pole 102.
  • the distance between the connecting hole 104 and the outer peripheral surface of the mounting portion 101 is 30-34 mm, preferably 31 mm, and the length of the magnetic pole 102 is 34.1-37 mm, preferably 34.5 mm.
  • the mounting portion 101 is provided with a positioning hole 105 for connecting with the bottom of the washing machine tub.
  • a mounting hole 301 corresponding to the connecting hole 104 and a positioning post 302 corresponding to the positioning hole 105 are provided on the bottom of the washing machine tub.
  • the present invention is an improvement on the basis of an existing washing machine motor.
  • the first improvement is to limit the number of magnetic poles
  • the second improvement is to limit the distance between the connecting part and the outer peripheral surface of the mounting part to be less than the length of the magnetic poles.
  • the first and second improvements can significantly reduce the noise of the motor.
  • the noise generated by the work is about 55db, which is 18db lower than the existing motor, which is a great reduction.
  • the third improvement is to set a positioning hole on the mounting part, and correspondingly, a positioning column matching the positioning hole should be added to the bottom of the washing machine tub.
  • One of the functions of the positioning hole is to increase the installation accuracy of the motor on the bottom of the washing machine tub.
  • the second is to prevent the reverse assembly of the motor.
  • the positioning column interferes with the rotor.
  • the motor cannot be placed flat on the bottom of the washing machine tub for fixing. Only when the motor is assembled to the bottom of the washing machine tub, the positioning The column can be inserted into the positioning hole, and the motor can be placed flat on the bottom of the washing machine tub for fixing, thereby reducing the possibility of assembly errors by workers.
  • X represents the noise curve of the existing motor
  • Y represents the noise curve of the motor of the present invention.
  • the noise test of the existing motor (18 pairs of magnetic poles) and the present invention (24 pairs of magnetic poles) are compared, under the same cycle ,
  • the noise amplitude of the present invention is about 3/4 of the existing motor.
  • the present invention has the advantage of less noise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

本发明公开了一种洗衣机用电机,包括定子(1)和转子(2)，定子(1)包括包括环形的安装部(101)，安装部(101)的外侧设有21-26对磁极，安装部(101)上设有多个绕安装部(101)轴线均匀分布的连接部(103)；所述磁极包括设置于安装部(101)外侧的多个第一磁极(102)和设置于第一磁极(102)外侧的第二磁极(201)，第二磁极(201)与转子(2)的内侧壁固定。本发明具有噪音较小的优点。

Description

洗衣机用电机 技术领域
本发明属于洗衣机用电机领域。
背景技术
电机是驱动洗衣机运动的核心部件，其结构的结构包括定子以及与定子同轴的转子；定子的结构包括环形的安装部，安装部上设有多个连接部，安装部的外侧通常设有18个磁极。洗衣机用的电机是非常成熟的部件，已经历经发展多年，在可靠性上提高到相当高的程度，使用寿命相当长，这是洗衣机维持长寿命的重要保障。但是随现在生活水平的提高，人们对洗衣机的要求已经不仅仅局限于长寿命，对静音方便也有了更高的要求，而电机是洗衣机噪音的重要来源，经检验，目前洗衣机用电机工作产生的噪音在68db左右，噪音大，导致洗衣机的静音效果差。因此，现有洗衣机用电机存在噪音大的缺点。
发明内容
本发明的目的在于，提供一种洗衣机用电机。本发明具有噪音小的优点。
本发明的技术方案：洗衣机用电机，包括定子和转子，定子包括包括环形的安装部，安装部的外侧设有21-26对磁极，安装部上设有多个绕安装部轴线均匀分布的连接部。
前述的洗衣机用电机中，所述磁极包括设置于安装部外侧的多个第一磁极和设置于第一磁极外侧的第二磁极，第二磁极与转子的内侧壁固定。
前述的洗衣机用电机中，所述安装部的外侧设有24对磁极，24对磁极由36个第一磁极和12个第二磁极组成，所述第一磁极为线圈，所述第二磁极为圆弧形的磁钢。
前述的洗衣机用电机中，所述连接部包括位于安装部上的凹陷部，凹陷部内设有连接孔，所述连接孔与安装部外周面的距离小于第一磁极的长度。
前述的洗衣机用电机中，所述连接孔与安装部外周面的距离30-34mm，所述第一磁极的长度34.1-37mm。
前述的洗衣机用电机中，所述连接孔与安装部外周面的距离31mm，所述磁极的长度34.5mm。
前述的洗衣机用电机中，所述安装部上设有用于与洗衣机桶底连接的定位孔。
与现有技术相比，本发明是在现有洗衣机用电机的基础上做的改进，第一处改进是限定了磁极的数量，第二处改进是限定了连接部与安装部外周面的距离小于磁极的长度，通过第一和第二处改进，可使电机的噪音明显下降，工作产生的噪音在55db左右，相较于现有电机降低了18db，降低幅度很大，第一和第二处改进是本发明主要的改进点。第三处改进是在在安装部上设置了定位孔，相应的要求洗衣机桶底上也增加一个与定位孔配合的定位柱，定位孔的作用其一是增加电机在洗衣机桶底上的安装精度，其二是防止电机反向装配，当电机反向装配到洗衣机桶底时，定位柱与转子干涉，电机不能平放于洗衣机桶底进行固定，只有电机正向装配到洗衣机桶底时，定位柱才能插入到定位孔中，电机得以平放于洗衣机桶底进行固定，从而减少工人装配错误的可能性。
因此，本发明具有噪音小的优点。
附图说明
图1是本发明的正视方向的立体图。
图2是定子的后视图。
图3是洗衣机桶底的结构示意图。
图4是噪音比对图。
附图中的标记为：101-安装部，102-第一磁极，103-连接部，104-连接孔，105-定位孔，106-凹陷部，2-转子，201-第二磁极,301-安装孔，302-定位柱。
具体实施方式
下面结合附图和实施例对本发明作进一步的说明，但并不作为对本发明限制的依据。
实施例。洗衣机用电机，如图1所示，包括定子1和转子2，转子2为顶部开口的筒形，底面中部设有转过定子的驱动轴，定子1包括包括环形的安装部101，安装部101的外侧设有24对磁极，安装部101上设有4个绕安装部101轴线均匀分布的连接部103。
所述磁极包括设置于安装部101外侧的多个第一磁极102和设置于第一磁极102外侧的第二磁极201，第二磁极201与转子2的内侧壁固定。
24对磁极由36个第一磁极102和12个第二磁极201组成，所述第一磁极102为铜线的线圈，所述第二磁极201为圆弧形的磁钢。每个第二磁极201对应有4个第一磁极102，即以4个相邻的第一磁极102为一组，位于中部的第一磁极102在对应第二磁极201的包角范围内，位于两侧的第一磁极102只有一半在第二磁极201的包角范围内，其余部分被相邻的第二磁极201对应，所以在36个第一磁极102和12个第二磁极201的基础上，每个第二磁极201均可对应4个第一磁极102，从而产生24对磁极。
所述连接部103包括位于安装部101上的凹陷部106，凹陷部106 内设有连接孔104，所述连接孔104与安装部101外周面的距离小于磁极102的长度。
所述连接孔104与安装部101外周面的距离30-34mm，最优为31mm，所述磁极102的长度34.1-37mm，最优为34.5mm。
所述安装部101上设有用于与洗衣机桶底连接的定位孔105。
如图3所示，所述洗衣机桶底上设有与连接孔104对应的安装孔301,以及与定位孔105对应的定位柱302。
本发明是在现有洗衣机用电机的基础上做的改进，第一处改进是限定了磁极的数量，第二处改进是限定了连接部与安装部外周面的距离小于磁极的长度，通过第一和第二处改进，可使电机的噪音明显下降，工作产生的噪音在55db左右，相较于现有电机降低了18db，降低幅度很大。第三处改进是在在安装部上设置了定位孔，相应的要求洗衣机桶底上也增加一个与定位孔配合的定位柱，定位孔的作用其一是增加电机在洗衣机桶底上的安装精度，其二是防止电机反向装配，当电机反向装配到洗衣机桶底时，定位柱与转子干涉，电机不能平放于洗衣机桶底进行固定，只有电机正向装配到洗衣机桶底时，定位柱才能插入到定位孔中，电机得以平放于洗衣机桶底进行固定，从而减少工人装配错误的可能性。
如图4所示，图中X代表现有电机噪音曲线，Y代表本发明电机噪音曲线，将现有电机(18对磁极)与本发明(24对磁极)进行噪音测试比较，在相同周期下，本发明的噪音幅值是现有电机的3/4左右。
因此，本发明具有噪音较小的优点。

Claims (7)

  1. 洗衣机用电机，其特征在于：包括定子(1)和转子(2)，定子(1)包括包括环形的安装部(101)，安装部(101)的外侧设有21-26对磁极，安装部(101)上设有多个绕安装部(101)轴线均匀分布的连接部(103)。
  2. 根据权利要求1所述的洗衣机用电机，其特征在于：所述磁极包括设置于安装部(101)外侧的多个第一磁极(102)和设置于第一磁极(102)外侧的第二磁极(201)，第二磁极(201)与转子(2)的内侧壁固定。
  3. 根据权利要求2所述的洗衣机用电机，其特征在于：所述安装部(101)的外侧设有24对磁极，24对磁极由36个第一磁极(102)和12个第二磁极(201)组成，所述第一磁极(102)为线圈，所述第二磁极(201)为圆弧形的磁钢。
  4. 根据权利要求2或3所述的洗衣机用电机，其特征在于：所述连接部(103)包括位于安装部(101)上的凹陷部(106)，凹陷部(106)内设有连接孔(104)，所述连接孔(104)与安装部(101)外周面的距离小于第一磁极(102)的长度。
  5. 根据权利要求4所述的洗衣机用电机，其特征在于：所述连接孔(104)与安装部(101)外周面的距离30-34mm，所述第一磁极(102)的长度34.1-37mm。
  6. 根据权利要求5所述的洗衣机用电机，其特征在于：所述连接孔(104)与安装部(101)外周面的距离31mm，所述磁极(102)的长度34.5mm。
  7. 根据权利要求1所述的洗衣机用电机，其特征在于：所述安装部(101)上设有用于与洗衣机桶底连接的定位孔(105)。
PCT/CN2020/088742 2020-01-07 2020-05-06 洗衣机用电机 WO2021139060A1 (zh)

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CN111106680B (zh) * 2020-01-07 2021-05-25 湖州南洋电机有限公司 洗衣机用电机

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