WO2021248801A1 - 利用变频器控制的直驱电机 - Google Patents

利用变频器控制的直驱电机 Download PDF

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Publication number
WO2021248801A1
WO2021248801A1 PCT/CN2020/127743 CN2020127743W WO2021248801A1 WO 2021248801 A1 WO2021248801 A1 WO 2021248801A1 CN 2020127743 W CN2020127743 W CN 2020127743W WO 2021248801 A1 WO2021248801 A1 WO 2021248801A1
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WO
WIPO (PCT)
Prior art keywords
fixedly connected
motor
direct drive
filter
drive motor
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Application number
PCT/CN2020/127743
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English (en)
French (fr)
Inventor
吴斌
Original Assignee
苏州迎乐机电自动化科技有限公司
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Publication of WO2021248801A1 publication Critical patent/WO2021248801A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium

Definitions

  • the invention relates to the technical field of direct drive motors, in particular to a direct drive motor controlled by a frequency converter.
  • Direct drive motor short for direct drive motor, mainly refers to that the motor does not need to go through a transmission device (such as a transmission belt, etc.) when driving a load.
  • Direct drive motors are suitable for all types of washing machines.
  • the main benefits include quietness, energy saving, and stability. , Strong power.
  • the current direct drive motors controlled by inverters have the following shortcomings:
  • the existing direct drive motors controlled by inverters have poor heat dissipation effect, which causes the internal temperature of the direct drive motors to be too high during long-term use, which causes the internal direct drive motors.
  • the components are prone to burn out, which shortens the service life of the direct drive motor.
  • the present invention provides a direct drive motor controlled by a frequency converter, which has the advantage of good heat dissipation effect on the internal heat dissipation of the direct drive motor, and solves the problem of poor heat dissipation effect of the existing direct drive motor controlled by the frequency converter.
  • Good the internal temperature of the direct-drive motor is too high when it is used for a long time, causing the internal components of the direct-drive motor to easily burn out.
  • a direct drive motor controlled by a frequency converter comprising a motor shell, the bottom of the motor shell is fixedly connected with a mounting seat, and the right side of the motor shell is fixed
  • the motor front cover is connected, the left side of the motor housing is fixedly connected with the motor rear cover by bolts, the inner wall of the motor housing is fixedly connected with a stator, the inner cavity of the stator is provided with a rotor, and the right side of the rotor
  • An output shaft is fixedly connected to the side, the right side of the output shaft penetrates to the right side of the motor front cover, the top and bottom right sides of the motor housing are both provided with heat dissipation grooves, and the inner wall of the heat dissipation groove is fixedly connected with a protection Dust net
  • the left side of the motor rear cover is fixedly connected with a box body, the left side of the box body is provided with an air inlet groove, the left side of the inner wall of the box body is fixed
  • the top and bottom of the filter box are connected with a suction pipe, and the end of the suction pipe away from the filter box is connected with An exhaust fan, the side of the exhaust fan away from the exhaust pipe is provided with an installation mechanism, the right side of the exhaust fan is connected with an air outlet pipe, and the right side of the air outlet pipe penetrates to and communicates with the inner cavity of the motor rear cover There is a ring tube, and the right side of the ring tube is connected with a blowing hood.
  • the surface of the filter housing is fixedly connected with the inner wall of the filter box, and the outer ends of the sponge filter layer and the cotton fiber filter layer are both fixedly connected with the inner wall of the filter housing.
  • the mounting mechanism includes a mounting plate, the four corners of the inner side of the mounting plate are fixedly connected to the inner wall of the box body by bolts, and both sides of the inner side of the mounting plate are fixedly connected with mounting brackets. It is fixedly connected to the surface of the exhaust fan.
  • a first bearing is sleeved on the surface of the output shaft, and the right side of the first bearing is fixedly connected to the left side of the motor front cover.
  • a rotating shaft is fixedly connected to the left side of the rotor
  • a second bearing is sleeved on the left end of the rotating shaft
  • the left side of the second bearing is fixedly connected to the right side of the motor rear cover.
  • the present invention provides a direct drive motor controlled by a frequency converter, which has the following beneficial effects:
  • the present invention is achieved by arranging the heat dissipation slot, the dust-proof net, the box body, the air inlet slot, the filter box, the filter mechanism, the exhaust pipe, the exhaust fan, the installation mechanism, the air outlet pipe, the ring pipe and the blowing hood to cooperate with each other.
  • the present invention has the function of dissipating heat conveniently to the inner cavity of the motor case by providing the heat dissipation slot, the dustproof net is provided to prevent the inner cavity of the motor
  • the inner cavity of the filter box plays a role of facilitating air intake.
  • the filter mechanism, filter housing, sponge filter layer and cotton fiber filter layer cooperate with each other to filter the dust in the air.
  • the machine plays a role of facilitating fixed installation.
  • the first bearing is provided to stabilize the output shaft and the rotor during rotation, and the rotation shaft and the second bearing are provided to stabilize the rotor during rotation.
  • Figure 1 is a schematic diagram of the structure of the present invention
  • Figure 2 is an enlarged cross-sectional view of the internal structure of the box of the present invention.
  • Figure 3 is a cross-sectional view of the right side structure of the motor rear cover of the present invention.
  • a direct drive motor controlled by a frequency converter including a motor housing 1.
  • the bottom of the motor housing 1 is fixedly connected with a mounting base 2, and the right side of the motor housing 1 is fixedly connected with a motor front cover 3.
  • the left side of the motor housing 1 is fixedly connected with a motor back cover 4 by bolts, the inner wall of the motor housing 1 is fixedly connected with a stator 5, the inner cavity of the stator 5 is provided with a rotor 6, and the right side of the rotor 6 is fixedly connected with an output Shaft 7, the right side of the output shaft 7 runs through to the right side of the motor front cover 3.
  • the right side of the top and bottom of the motor housing 1 are both provided with a heat dissipation groove 8.
  • the inner wall of the heat dissipation groove 8 is fixedly connected with a dust-proof net 9, the motor
  • the left side of the rear cover 4 is fixedly connected with a box body 10, the left side of the box body 10 is provided with an air inlet groove 11, the left side of the inner wall of the box body 10 is fixedly connected with a filter box 12, and the inner cavity of the filter box 12 is provided with a filter mechanism 13.
  • the filter mechanism 13 includes a filter housing 131, a sponge filter layer 132 and a cotton fiber filter layer 133.
  • the top and bottom of the filter box 12 are connected with a suction pipe 14, and the end of the suction pipe 14 away from the filter box 12 is connected with an exhaust fan 15.
  • the side of the exhaust fan 15 away from the exhaust pipe 14 is provided with an installation mechanism 16, the right side of the exhaust fan 15 is connected with an air outlet pipe 17, and the right side of the air outlet pipe 17 penetrates to the inner cavity of the motor rear cover 4 and communicates with it
  • the inner wall is fixedly connected.
  • the mounting mechanism 16 includes a mounting plate 161. The four corners of the inner side of the mounting plate 161 are all fixedly connected to the inner wall of the box body 10 by bolts.
  • Both sides of the inner side of the mounting plate 161 are fixedly connected with a mounting bracket 162. It is fixedly connected with the surface of the exhaust fan 15, the surface of the output shaft 7 is sleeved with a first bearing 20, the right side of the first bearing 20 is fixedly connected with the left side of the motor front cover 3, and the left side of the rotor 6 is fixedly connected with a rotating shaft 21 , The left end of the rotating shaft 21 is sleeved with a second bearing 22, and the left side of the second bearing 22 is fixedly connected to the right side of the motor rear cover 4.
  • the heat dissipation groove 8 is provided to facilitate the discharge of the inner cavity of the motor housing 1.
  • the function of hot air is to prevent dust from the inner cavity of the motor housing 1 by setting the dust-proof net 9, and by setting the air inlet groove 11, the inner cavity of the filter box 12 is convenient for air intake.
  • the filter mechanism 13, the filter housing 131, the sponge filter layer 132 and the cotton fiber filter layer 133 cooperate with each other to filter the dust in the air.
  • the installation mechanism 16 is provided to facilitate the fixed installation of the exhaust fan 15.
  • the dust net 9, the box body 10, the air inlet groove 11, the filter box 12, the filter mechanism 13, the exhaust pipe 14, the exhaust fan 15, the installation mechanism 16, the air outlet pipe 17, the ring pipe 18 and the blowing hood 19 cooperate with each other to achieve It has a good effect on the internal heat dissipation of the direct drive motor. Point, so that when the direct drive motor is used for a long time, it can effectively blow heat to the internal components of the direct drive motor, prevent the internal components of the direct drive motor from burning out at high temperature, and extend the service life of the direct drive motor.
  • the exhaust fan 15 draws the air in the inner cavity of the filter box 12 through the exhaust pipe 14, and ventilates the inner cavity of the filter box 12 through the air inlet groove 11. Enter the inner cavity of the filter box 12, and then filter the dust in the air through the cotton fiber filter layer 133 and the sponge filter layer 132. The filtered air enters the inner cavity of the air outlet pipe 17 through the exhaust pipe 14 and the exhaust fan 15. Then enter the inner cavity of the ring pipe 18 through the air outlet pipe 17, and then blow the components in the inner cavity of the motor housing 1 to dissipate heat through the blowing hood 19, so that the hot air in the inner cavity of the motor housing 1 is discharged through the heat dissipation groove 8.
  • the standard parts used in this application can be purchased from the market, and can be customized according to the instructions and drawings.
  • the specific connection methods of each part adopt the mature bolts, rivets, welding, etc. in the prior art.
  • Conventional means, machinery, parts, and equipment adopt conventional models in the prior art.
  • the control method is automatically controlled by a controller.
  • the control circuit of the controller can be realized by simple programming by a person skilled in the art, which belongs to the well-known in the art. Common sense, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and circuit connection in detail, and the peripheral controller mentioned in the specification can play a control role for the electrical components mentioned in this article.
  • the peripheral controller is a conventional known device.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

一种利用变频器控制的直驱电机，包括电机壳（1），所述电机壳（1）的底部固定连接有安装座（2），所述电机壳（1）的右侧固定连接有电机前盖（3），所述电机壳（1）的左侧通过螺栓固定连接有电机后盖（4），所述电机壳（1）的内壁固定连接有定子（5），所述定子（5）的内腔设置有转子（6），所述转子（6）的右侧固定连接有输出轴（7），所述输出轴（7）的右侧贯穿至电机前盖（3）的右侧，所述电机壳（1）顶部和底部的右侧均开设有散热槽（8），所述电机后盖（4）的左侧固定连接有箱体（10），所述箱体（10）内壁的左侧固定连接有过滤箱（12），所述过滤箱（12）的顶部和底部均连通有抽风管（14），所述抽风管（14）远离过滤箱（12）的一端连通有抽风机（15），所述抽风机（15）远离抽风管（14）的一侧设置有安装机构（16），所述抽风机（15）的右侧连通有出风管（17），所述出风管（17）的右侧贯穿至电机后盖（4）的内腔并连通有环管（18），所述环管（18）的右侧连通有吹风罩（19）。上述技术方案对直驱电机内部散热效果好，能够防止直驱电机内部元件高温烧坏，延长直驱电机的使用寿命。

Description

利用变频器控制的直驱电机 技术领域
本发明涉及直驱电机技术领域，具体为一种利用变频器控制的直驱电机。
 背景技术
直驱电机，直接驱动式电机的简称，主要指电机在驱动负载时，不需经过传动装置（如传动皮带等），直驱电机适合用于各类洗衣机，主要利益点包括静音、节能、平稳、动力强劲。
 技术问题
目前现有利用变频器控制的直驱电机有以下缺点：现有的利用变频器控制的直驱电机散热效果不佳，导致直驱电机在长期使用时，内部温度过高，造成直驱电机内部元件容易出现烧坏，缩短了直驱电机的使用寿命。
针对现有技术的不足，本发明提供了一种利用变频器控制的直驱电机，具备对直驱电机内部散热效果好的优点，解决了现有的利用变频器控制的直驱电机散热效果不佳，导致直驱电机在长期使用时，内部温度过高，造成直驱电机内部元件容易出现烧坏的问题。
 技术解决方案
为实现上述目的，本发明提供如下技术方案：一种利用变频器控制的直驱电机，包括电机壳，所述电机壳的底部固定连接有安装座，所述电机壳的右侧固定连接有电机前盖，所述电机壳的左侧通过螺栓固定连接有电机后盖，所述电机壳的内壁固定连接有定子，所述定子的内腔设置有转子，所述转子的右侧固定连接有输出轴，所述输出轴的右侧贯穿至电机前盖的右侧，所述电机壳顶部和底部的右侧均开设有散热槽，所述散热槽的内壁固定连接有防尘网，所述电机后盖的左侧固定连接有箱体，所述箱体的左侧开设有进气槽，所述箱体内壁的左侧固定连接有过滤箱，所述过滤箱的内腔设置有过滤机构，所述过滤机构包括过滤壳、海绵过滤层和棉纤维过滤层，所述过滤箱的顶部和底部均连通有抽风管，所述抽风管远离过滤箱的一端连通有抽风机，所述抽风机远离抽风管的一侧设置有安装机构，所述抽风机的右侧连通有出风管，所述出风管的右侧贯穿至电机后盖的内腔并连通有环管，所述环管的右侧连通有吹风罩。
优选的，所述过滤壳的表面与过滤箱的内壁固定连接，所述海绵过滤层和棉纤维过滤层的外端均与过滤壳的内壁固定连接。
优选的，所述安装机构包括安装板，所述安装板内侧的四角均通过螺栓与箱体的内壁固定连接，所述安装板内侧的两侧均固定连接有安装支架，所述安装支架的内侧与抽风机的表面固定连接。
优选的，所述输出轴的表面套接有第一轴承，所述第一轴承的右侧与电机前盖的左侧固定连接。
优选的，所述转子的左侧固定连接有转轴，所述转轴的左端套接有第二轴承，所述第二轴承的左侧与电机后盖的右侧固定连接。
 有益效果
与现有技术相比，本发明提供了一种利用变频器控制的直驱电机，具备以下有益效果：
1、本发明通过设置散热槽、防尘网、箱体、进气槽、过滤箱、过滤机构、抽风管、抽风机、安装机构、出风管、环管和吹风罩相互配合，达到了对直驱电机内部散热效果好的优点，使直驱电机在长期使用时，能够有效的对直驱电机内部元件进行吹风散热，防止直驱电机内部元件出现高温烧坏，延长了直驱电机的使用寿命。
本发明通过设置散热槽，对电机壳的内腔起到方便散出热气的作用，通过设置防尘网，对电机壳的内腔起到防尘的作用，通过设置进气槽，对过滤箱的内腔起到方便进气的作用，通过设置过滤机构、过滤壳、海绵过滤层和棉纤维过滤层相互配合，对空气中的粉尘起到过滤的作用，通过设置安装机构，对抽风机起到方便固定安装的作用，通过设置第一轴承，对输出轴和转子起到转动时稳定的作用，通过设置转轴和第二轴承，对转子起到转动时稳定的作用。
 附图说明
图1为本发明结构示意图；
图2为本发明箱体内部结构剖面放大图；
图3为本发明电机后盖右视结构剖面图。
图中：1、电机壳；2、安装座；3、电机前盖；4、电机后盖；5、定子；6、转子；7、输出轴；8、散热槽；9、防尘网；10、箱体；11、进气槽；12、过滤箱；13、过滤机构；131、过滤壳；132、海绵过滤层；133、棉纤维过滤层；14、抽风管；15、抽风机；16、安装机构；161、安装板；162、安装支架；17、出风管；18、环管；19、吹风罩；20、第一轴承；21、转轴；22、第二轴承。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的所有部件均为通用的标准部件或本领域技术人员知晓的部件，其结构和原理都为本领域技术人员均可通过技术手册得知或通过常规实验方法获知。
请参阅图1-3，一种利用变频器控制的直驱电机，包括电机壳1，电机壳1的底部固定连接有安装座2，电机壳1的右侧固定连接有电机前盖3，电机壳1的左侧通过螺栓固定连接有电机后盖4，电机壳1的内壁固定连接有定子5，定子5的内腔设置有转子6，转子6的右侧固定连接有输出轴7，输出轴7的右侧贯穿至电机前盖3的右侧，电机壳1顶部和底部的右侧均开设有散热槽8，散热槽8的内壁固定连接有防尘网9，电机后盖4的左侧固定连接有箱体10，箱体10的左侧开设有进气槽11，箱体10内壁的左侧固定连接有过滤箱12，过滤箱12的内腔设置有过滤机构13，过滤机构13包括过滤壳131、海绵过滤层132和棉纤维过滤层133，过滤箱12的顶部和底部均连通有抽风管14，抽风管14远离过滤箱12的一端连通有抽风机15，抽风机15远离抽风管14的一侧设置有安装机构16，抽风机15的右侧连通有出风管17，出风管17的右侧贯穿至电机后盖4的内腔并连通有环管18，环管18的右侧连通有吹风罩19，过滤壳131的表面与过滤箱12的内壁固定连接，海绵过滤层132和棉纤维过滤层133的外端均与过滤壳131的内壁固定连接，安装机构16包括安装板161，安装板161内侧的四角均通过螺栓与箱体10的内壁固定连接，安装板161内侧的两侧均固定连接有安装支架162，安装支架162的内侧与抽风机15的表面固定连接，输出轴7的表面套接有第一轴承20，第一轴承20的右侧与电机前盖3的左侧固定连接，转子6的左侧固定连接有转轴21，转轴21的左端套接有第二轴承22，第二轴承22的左侧与电机后盖4的右侧固定连接，通过设置散热槽8，对电机壳1的内腔起到方便散出热气的作用，通过设置防尘网9，对电机壳1的内腔起到防尘的作用，通过设置进气槽11，对过滤箱12的内腔起到方便进气的作用，通过设置过滤机构13、过滤壳131、海绵过滤层132和棉纤维过滤层133相互配合，对空气中的粉尘起到过滤的作用，通过设置安装机构16，对抽风机15起到方便固定安装的作用，通过设置第一轴承20，对输出轴7和转子6起到转动时稳定的作用，通过设置转轴21和第二轴承22，对转子6起到转动时稳定的作用，通过设置散热槽8、防尘网9、箱体10、进气槽11、过滤箱12、过滤机构13、抽风管14、抽风机15、安装机构16、出风管17、环管18和吹风罩19相互配合，达到了对直驱电机内部散热效果好的优点，使直驱电机在长期使用时，能够有效的对直驱电机内部元件进行吹风散热，防止直驱电机内部元件出现高温烧坏，延长了直驱电机的使用寿命。
使用时，首先通过外设控制器打开抽风机15，抽风机15通过抽风管14对过滤箱12内腔的空气进行抽动，通过进气槽11对过滤箱12的内腔进行换气，空气进入过滤箱12的内腔，然后通过棉纤维过滤层133和海绵过滤层132对空气中的粉尘进行过滤，过滤后的空气通过抽风管14和抽风机15进入出风管17的内腔，然后再通过出风管17进入环管18的内腔，然后再通过吹风罩19对电机壳1内腔的元件进行吹风散热，使电机壳1内腔的热空气通过散热槽8排出即可，能够有效的对直驱电机内部元件进行吹风散热，防止直驱电机内部元件出现高温烧坏，延长了直驱电机的使用寿命，从而达到了对直驱电机内部散热效果好的优点。
本申请文件中使用到的标准零件均可以从市场上购买，而且根据说明书和附图的记载均可以进行订制，各个零件的具体连接方式均采用现有技术中成熟的螺栓、铆钉、焊接等常规手段，机械、零件和设备均采用现有技术中常规的型号，控制方式是通过控制器来自动控制，控制器的控制电路通过本领域的技术人员简单编程即可实现，属于本领域的公知常识，并且本发明主要用来保护机械装置，所以本发明不再详细解释控制方式和电路连接，且说明书中提到的外设控制器可为本文提到的电器元件起到控制作用，而且该外设控制器为常规的已知设备。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。

Claims (5)

  1. 一种利用变频器控制的直驱电机，包括电机壳（1），其特征在于：所述电机壳（1）的底部固定连接有安装座（2），所述电机壳（1）的右侧固定连接有电机前盖（3），所述电机壳（1）的左侧通过螺栓固定连接有电机后盖（4），所述电机壳（1）的内壁固定连接有定子（5），所述定子（5）的内腔设置有转子（6），所述转子（6）的右侧固定连接有输出轴（7），所述输出轴（7）的右侧贯穿至电机前盖（3）的右侧，所述电机壳（1）顶部和底部的右侧均开设有散热槽（8），所述散热槽（8）的内壁固定连接有防尘网（9），所述电机后盖（4）的左侧固定连接有箱体（10），所述箱体（10）的左侧开设有进气槽（11），所述箱体（10）内壁的左侧固定连接有过滤箱（12），所述过滤箱（12）的内腔设置有过滤机构（13），所述过滤机构（13）包括过滤壳（131）、海绵过滤层（132）和棉纤维过滤层（133），所述过滤箱（12）的顶部和底部均连通有抽风管（14），所述抽风管（14）远离过滤箱（12）的一端连通有抽风机（15），所述抽风机（15）远离抽风管（14）的一侧设置有安装机构（16），所述抽风机（15）的右侧连通有出风管（17），所述出风管（17）的右侧贯穿至电机后盖（4）的内腔并连通有环管（18），所述环管（18）的右侧连通有吹风罩（19）。
  2. 根据权利要求1所述的一种利用变频器控制的直驱电机，其特征在于：所述过滤壳（131）的表面与过滤箱（12）的内壁固定连接，所述海绵过滤层（132）和棉纤维过滤层（133）的外端均与过滤壳（131）的内壁固定连接。
  3. 根据权利要求1所述的一种利用变频器控制的直驱电机，其特征在于：所述安装机构（16）包括安装板（161），所述安装板（161）内侧的四角均通过螺栓与箱体（10）的内壁固定连接，所述安装板（161）内侧的两侧均固定连接有安装支架（162），所述安装支架（162）的内侧与抽风机（15）的表面固定连接。
  4. 根据权利要求1所述的一种利用变频器控制的直驱电机，其特征在于：所述输出轴（7）的表面套接有第一轴承（20），所述第一轴承（20）的右侧与电机前盖（3）的左侧固定连接。
  5. 根据权利要求1所述的一种利用变频器控制的直驱电机，其特征在于：所述转子（6）的左侧固定连接有转轴（21），所述转轴（21）的左端套接有第二轴承（22），所述第二轴承（22）的左侧与电机后盖（4）的右侧固定连接。
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