WO2024234488A1 - 一种外转子电机散热系统 - Google Patents

一种外转子电机散热系统 Download PDF

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Publication number
WO2024234488A1
WO2024234488A1 PCT/CN2023/113413 CN2023113413W WO2024234488A1 WO 2024234488 A1 WO2024234488 A1 WO 2024234488A1 CN 2023113413 W CN2023113413 W CN 2023113413W WO 2024234488 A1 WO2024234488 A1 WO 2024234488A1
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WO
WIPO (PCT)
Prior art keywords
heat dissipation
outer rotor
sleeve
guide cover
air guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/113413
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English (en)
French (fr)
Inventor
梁志成
陈星富
陈挥秀
孙海荣
王睿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongshan Broad Ocean Motor Co Ltd
Original Assignee
Zhongshan Broad Ocean Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhongshan Broad Ocean Motor Co Ltd filed Critical Zhongshan Broad Ocean Motor Co Ltd
Priority to US18/765,319 priority Critical patent/US20240380286A1/en
Priority to MX2024011173A priority patent/MX2024011173A/es
Publication of WO2024234488A1 publication Critical patent/WO2024234488A1/zh
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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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
    • 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
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791—Surface mounted magnets; Inset magnets
    • 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
    • H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
    • 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
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • 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 utility model relates to a heat dissipation system for an outer rotor motor
  • some manufacturers currently set a number of heat dissipation ribs on the outer surface of the control box, install an air guide cover outside the heat dissipation ribs to form a directional air flow channel, and dig a number of through holes on the bottom plate between the fan air inlet and the air flow channel, so that the cold air enters the fan air inlet through the air flow channel and the through holes on the bottom plate.
  • the through holes dug on the bottom plate must be between two adjacent heat dissipation ribs, the size of the through holes is greatly limited, the number of through holes is large, the structure is complex, the installation is troublesome, the air flow is small, and the heat dissipation efficiency is affected.
  • the utility model aims to provide a heat dissipation system for an outer rotor motor, which has a simple structure, a reasonable design, and is easy to install, thereby increasing the air flow and improving the heat dissipation efficiency.
  • a heat dissipation system for an outer rotor motor comprises a rotating shaft, a stator assembly, an outer rotor, a sleeve seat, a wind wheel, an air guide cover and a control box, wherein:
  • the sleeve seat includes a bottom plate and a sleeve protruding upward from the middle of the bottom plate.
  • Bearing chambers are opened at both ends of the sleeve, and bearings are installed in the bearing chambers.
  • the rotating shaft is located in the sleeve and the two ends are supported on the bearings respectively.
  • the outer rotor includes a casing sleeve and a plurality of permanent magnets mounted on the inner wall of the casing sleeve. One end extends out from the sleeve and is installed and connected with the casing sleeve; a flange extends outward from the opening of the casing sleeve, and a wind wheel is installed at the bottom of the flange;
  • the stator assembly is nested and installed outside the sleeve, and the outer rotor is sleeved outside the stator assembly;
  • the control box includes a box body and a control circuit board installed in the box body.
  • the box body is installed on the bottom plate.
  • a plurality of vertical heat dissipation blades protrude from the outer surface of the box body.
  • An air guide cover is installed outside a part of the heat dissipation blades. Two adjacent heat dissipation ribs and the inner wall of the air guide cover form a vertical air duct.
  • the characteristic is that a plurality of flanges extend from the top of the wind guide cover, through holes are arranged on the flanges to communicate with the vertical air ducts, notches are dug on the edge of the bottom plate, the flanges are embedded in the notches, so that the through holes are located directly below the air inlet of the wind wheel.
  • the inner surface of the above-mentioned air guide cover is provided with a plurality of first heat dissipation ribs, and the first heat dissipation ribs correspond to the positions of the heat dissipation blades.
  • a plurality of second heat dissipation ribs are arranged on the outer surface of the air guide cover.
  • the above-mentioned air guide cover is made of metal material.
  • the utility model has a plurality of flanges extending from the top of the air guide cover, through holes are arranged on the flanges to communicate with the vertical air ducts, a notch is dug on the edge of the bottom plate, the flanges are embedded in the notch, so that the through holes are located directly below the air inlet of the wind wheel, the size of the through holes is not limited by the two adjacent heat dissipation blades, the through holes are located on the outside of the heat dissipation blades, the structure is simple, the installation is easy, the air flow is increased, and the heat dissipation efficiency is improved.
  • FIG1 is a perspective view of the present invention
  • Figure 2 is an exploded view of the present invention
  • Fig. 3 is a cross-sectional view taken along line A-A of Fig. 2;
  • FIG4 is a partial exploded view of the air guide cover of the utility model
  • FIG5 is a partial exploded view of the outer rotor and stator assembly provided by the present invention.
  • FIG6 is a perspective view of a control box of the present invention.
  • FIG7 is a perspective view of the air guide cover of the present invention.
  • FIG8 is a schematic diagram of the assembly of the air guide cover and the bottom plate of the utility model
  • FIG9 is a schematic diagram of the assembly of the air guide cover and the control box of the utility model
  • FIG. 10 is a schematic diagram of the heat dissipation principle of the present utility model.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • this embodiment provides an outer rotor motor heat dissipation system, including a rotating shaft 1, a stator assembly 2, an outer rotor 3, a sleeve seat 4, a wind wheel 5, an air guide cover 6 and a control box 7, wherein:
  • the sleeve seat 4 includes a bottom plate 41 and a sleeve 42 protruding upward from the middle of the bottom plate 41.
  • Bearing chambers 421 are opened at both ends of the sleeve 42.
  • Bearings 422 are installed in the bearing chambers 421.
  • the rotating shaft 1 is located in the sleeve 42 and its two ends are supported on the bearings 422 respectively.
  • the outer rotor 3 includes a casing sleeve 31 and a plurality of permanent magnets 32 mounted on the inner wall of the casing sleeve 31.
  • One end of the rotating shaft 1 extends from the sleeve 42 and is mounted and connected to the casing sleeve 31.
  • a flange 33 extends outward from the opening of the casing sleeve 31, and a wind wheel 5 is mounted at the bottom of the flange 33.
  • the stator assembly 2 is nested and installed outside the sleeve 42, and the outer rotor 3 is sleeved outside the stator assembly 2;
  • the control box 7 includes a box body 71 and a control circuit board 72 installed in the box body 71.
  • the box body 71 is installed on the bottom plate 41.
  • a plurality of vertical heat dissipation blades 73 protrude from the outer surface of the box body 71.
  • An air guide 6 is installed outside a part of the heat dissipation blades 73.
  • the inner surface of the air guide 6 of the adjacent two heat dissipation blades 73 and the air guide 6 is connected to the box body 71.
  • the wall is surrounded by a vertical air duct 74;
  • a plurality of flanges 65 extend from the top of the air guide cover 6, through holes 651 are arranged on the flanges 65 to communicate with the vertical air duct 74, a notch 43 is dug on the edge of the bottom plate 41, the flanges 65 are embedded in the notch 43, so that the through holes 651 are located directly below the air inlet 51 of the wind wheel 5.
  • the working principle of the utility model is as follows: when the motor is working, the outer rotor 3 rotates, driving the wind wheel 5 to rotate, and the wind wheel 5 throws out air from the air outlet, forming a negative pressure at the air inlet of the wind wheel, and the cold air enters the vertical air duct 74 from the bottom of the box body 71, and takes away the heat of the heat dissipation blades 73, and then is drawn out from the through hole 651 located just below the air inlet 51 of the wind wheel 5 and enters the air inlet of the wind wheel 5.
  • the size of the through hole is not limited by the two adjacent heat dissipation blades, and the through hole is located on the outside of the heat dissipation blade, with a simple structure, easy installation, increased air flow, and improved heat dissipation efficiency.
  • the inner surface of the air guide cover 6 is provided with a plurality of first heat dissipation ribs 61, and the first heat dissipation ribs 61 correspond to the positions of the heat dissipation blades 73. Since the box body 71 and the air guide cover 6 are installed together, part of the heat is transferred to the air guide cover 6.
  • the first heat dissipation ribs 61 can increase the contact surface of the air duct 74 with the cold air to improve the heat dissipation efficiency.
  • the outer surface of the air guide cover 6 is provided with a plurality of second heat dissipation ribs 62. Since the box body 71 and the air guide cover 6 are installed together, part of the heat is transferred to the air guide cover 6, and the second heat dissipation ribs 62 improve the heat dissipation efficiency.
  • the above-mentioned air guide cover 6 is made of metal material, which makes it easy for the box body 71 to transfer part of the heat to the air guide cover 6.
  • flanges 65 which are spaced apart and have a simple structure and a reasonable layout.
  • the through hole 651 is a square hole with a simple structure and a large cross-section, which can increase the air flow and improve the heat dissipation efficiency.
  • Each of the flange portions 65 is provided with two through holes 651 .

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

一种外转子电机散热系统，包括转轴（1）、定子组件（2）、外转子（3）、套筒座（4）、风轮（5）、导风罩（6）和控制盒（7），外转子（3）的机壳套筒（31）的开口处往外伸出有法兰（33），在法兰（33）底部安装有风轮（5）；在控制盒（7）的盒体外表面凸出若条竖向的散热叶片（73），在一部分的散热叶片（73）外面安装有导风罩（6），相邻两散热筋（73）和导风罩（6）内壁围成竖立的风道（74），在导风罩（6）的顶部伸出有若干凸缘部（65），凸缘（65）上设置通孔（651）与竖立的风道（74）连通，在底板（41）的边缘挖有缺口（43），凸缘部（65）嵌入缺口（43），使通孔（651）位于风轮（5）的入风口（51）的正下方。它结构简单，设计合理，安装方便，使空气流量增加，提高散热效率。

Description

一种外转子电机散热系统 技术领域
本实用新型涉及一种外转子电机散热系统
背景技术
目前，外转子电机由于功率越来越大，发热也越来越严重，导致电子元器件在高温下工作，容易出现损坏导致故障产生，所以一般功率较大的外转子电机都安装有风扇，以带动空气流动，加速散热，见专利号为：CN202122640323、专利名称为：一种外转子电机的实用新型专利，该结构存在如下技术问题：电机控制器(或者称控制盒)的散热路径复杂较长，空气流速不够快，流量低，从而使散热效果较差。
为了解决以上技术问题，目前一些厂家在控制盒外表面设置若干散热筋，在若干散热筋外面安装导风罩形成定向的空气流道，在风扇入风口与空气流道之间的底板上挖掘若干个通孔，使冷空气经过空气流道、底板上通孔进入风扇入风口，该结构虽然能加快空气定向流动，加快散热，但底板上挖掘的通孔必须在相邻两块散热筋之间，通孔尺寸受到较大限制，通孔的数量较多，结构复杂，安装麻烦，空气流量较小，影响散热效率。
发明内容
本实用新型的目的是提供一种外转子电机散热系统，它结构简单，设计合理，安装方便，使空气流量增加，提高散热效率。
本实用新型的技术方案是这样实现的：
一种外转子电机散热系统，包括转轴、定子组件、外转子、套筒座、风轮、导风罩和控制盒，其中：
套筒座包括底板和从底板中间往上凸起的套筒，在套筒两端开设有轴承室，轴承室里面安装有轴承，转轴位于套筒里面并且两端分别支承在所述的轴承上；
外转子包括机壳套筒和安装在机壳套筒内壁面上的若干永磁体，转轴 一端从套筒伸出与机壳套筒安装连接在一起；机壳套筒的开口处往外伸出有法兰，在法兰底部安装有风轮；
定子组件嵌套安装在套筒的外面，外转子套设于定子组件外面；
控制盒包括盒体和安装在盒体里面控制线路板，盒体安装在底板上，在盒体外表面凸出若条竖向的散热叶片，在一部分的散热叶片外面安装有导风罩，相邻两散热筋和导风罩内壁围成竖立的风道；
其特征在于：在导风罩的顶部伸出有若干凸缘部，凸缘上设置通孔与竖立的风道连通，在底板的边缘挖有缺口,凸缘部嵌入缺口，使通孔位于风轮的入风口的正下方。
上述的所述的导风罩内表面设置若干条第一散热筋，第一散热筋与散热叶片位置对应。
上述所述的导风罩外表面设置若干条第二散热筋。
上述的导风罩是金属材料制造。
本实用新型与现有技术相比，有以下优点：
1、本实用新型在导风罩的顶部伸出有若干凸缘部，凸缘上设置通孔与竖立的风道连通，在底板的边缘挖有缺口,凸缘部嵌入缺口，使通孔位于风轮的入风口的正下方，通孔尺寸不受到相邻两散热叶片限制，通孔位于散热叶片的外侧，结构简单，安装简便，空气流量增加，提高散热效率。
2、本实用新型的其它优点在说明书实施例部分做详细的描述。
附图说明
图1为本实用新型提供的立体图；
图2为本实用新型提供的分解图；
图3为图2的A-A剖视图；
图4为本实用新型的导风罩部分的局部分解图；
图5为本实用新型提供的外转子和定子组件的局部分解图；
图6为本实用新型的控制盒的立体图；
图7为本实用新型的导风罩的立体图；
图8为本实用新型的导风罩与底板的装配示意图；
图9为本实用新型的导风罩与控制盒的装配示意图；
图10是本实用新型的散热原理图。
具体实施方式
为使本实用新型实施例的目的、技术方案和优点更加清楚，下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，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，都属于本实用新型保护的范围。
实施例一：
如图1至图9所示，本实施例提供了一种外转子电机散热系统，包括转轴1、定子组件2、外转子3、套筒座4、风轮5、导风罩6和控制盒7，其中：
套筒座4包括底板41和从底板41中间往上凸起的套筒42，在套筒42两端开设有轴承室421，轴承室421里面安装有轴承422，转轴1位于套筒42里面并且两端分别支承在所述的轴承422上；
外转子3包括机壳套筒31和安装在机壳套筒31内壁面上的若干永磁体32，转轴1一端从套筒42伸出与机壳套筒31安装连接在一起；机壳套筒31的开口处往外伸出有法兰33，在法兰33底部安装有风轮5；
定子组件2嵌套安装在套筒42的外面，外转子3套设于定子组件2外面；
控制盒7包括盒体71和安装在盒体71里面控制线路板72，盒体71安装在底板41上，在盒体71外表面凸出若条竖向的散热叶片73，在一部分的散热叶片73外面安装有导风罩6，相邻两散热叶片73和导风罩6内 壁围成竖立的风道74；
其特征在于：在导风罩6的顶部伸出有若干凸缘部65，凸缘65上设置通孔651与竖立的风道74连通，在底板41的边缘挖有缺口43,凸缘部65嵌入缺口43，使通孔651位于风轮5的入风口51的正下方。
如图10所示，本实用新型的工作原理是：电机工作时，外转子3转动，带动风轮5转动，风轮5出风口往外甩出空气，在风轮的入风口处形成负压，冷空气从盒体71底部进入竖立的风道74，并带走散热叶片73的热量，然后从位于风轮5的入风口51的正下方的通孔651牵引出来进入风轮5的入风口。通孔尺寸不受到相邻两散热叶片限制，通孔位于散热叶片的外侧，结构简单，安装简便，空气流量增加，提高散热效率。
上述所述的导风罩6内表面设置若干条第一散热筋61，第一散热筋61与散热叶片73位置对应。由于盒体71与导风罩6安装在一起，部分热量传递到导风罩6。第一散热筋61可以增加风道74里面与冷空气接触面提升散热效率。
上述所述的导风罩6外表面设置若干条第二散热筋62，由于盒体71与导风罩6安装在一起，部分热量传递到导风罩6，第二散热筋62提升散热效率。
上述的导风罩6是金属材料制造，便于盒体71将部分热量传递到导风罩6。
上述的若干凸缘部65是有3个，且间隔分布，结构简单，布局合理。
上述的通孔651是方形孔，结构简单，方形孔截面大，可以提高气流量，提升散热效率。
上述的每个凸缘部65设置2个通孔651。
以上实施例为本实用新型的较佳实施方式，但本实用新型的实施方式不限于此，其他任何未背离本实用新型的精神实质与原理下所作的改变、修饰、替代、组合、简化，均为等效的置换方式，都包含在本实用新型的 保护范围之内。

Claims (7)

  1. 一种外转子电机散热系统，包括转轴(1)、定子组件(2)、外转子(3)、套筒座(4)、风轮(5)、导风罩(6)和控制盒(7)，其中：
    套筒座(4)包括底板(41)和从底板(41)中间往上凸起的套筒(42)，在套筒(42)两端开设有轴承室(421)，轴承室(421)里面安装有轴承(422)，转轴(1)位于套筒(42)里面并且两端分别支承在所述的轴承(422)上；
    外转子(3)包括机壳套筒(31)和安装在机壳套筒(31)内壁面上的若干永磁体(32)，转轴(1)一端从套筒(42)伸出与机壳套筒(31)安装连接在一起；机壳套筒(31)的开口处往外伸出有法兰(33)，在法兰(33)底部安装有风轮(5)；
    定子组件(2)嵌套安装在套筒(42)的外面，外转子(3)套设于定子组件(2)外面；
    控制盒(7)包括盒体(71)和安装在盒体(71)里面控制线路板(72)，盒体(71)安装在底板(41)上，在盒体(71)外表面凸出若条竖向的散热叶片(73)，在一部分的散热叶片(73)外面安装有导风罩(6)，相邻两散热叶片(73)和导风罩(6)内壁围成竖立的风道(74)；
    其特征在于：在导风罩(6)的顶部伸出有若干凸缘部(65)，凸缘(65)上设置通孔(651)与竖立的风道(74)连通，在底板(41)的边缘挖有缺口(43),凸缘部(65)嵌入缺口(43)，使通孔(651)位于风轮(5)的入风口(51)的正下方。
  2. 根据权利要求1所述的一种外转子电机散热系统，其特征在于：所述的导风罩(6)内表面设置若干条第一散热筋(61)，第一散热筋(61)与散热叶片(73)位置对应。
  3. 根据权利要求2所述的一种外转子电机散热系统，其特征在于：所述的导风罩(6)外表面设置若干条第二散热筋(62)。
  4. 根据权利要求3所述的一种外转子电机散热系统，其特征在于：导 风罩(6)是金属材料制造。
  5. 根据权利要求1或2或3或4所述的一种外转子电机散热系统，其特征在于：若干凸缘部(65)是有3个，且间隔分布。
  6. 根据权利要求5所述的一种外转子电机散热系统，其特征在于：通孔(651)是方形孔。
  7. 根据权利要求6所述的一种外转子电机散热系统，其特征在于：每个凸缘部(65)设置2个通孔(651)。
PCT/CN2023/113413 2023-05-12 2023-08-16 一种外转子电机散热系统 Pending WO2024234488A1 (zh)

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MX2024011173A MX2024011173A (es) 2023-05-12 2024-09-11 Dispositivo termodisipador para motor de rotor exterior

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CN101338731A (zh) * 2008-07-15 2009-01-07 宁波银风能源科技股份有限公司 集风型筒式水平轴发电系统
CN201312471Y (zh) * 2008-12-05 2009-09-16 讯凯国际股份有限公司 导风罩
CN102651953A (zh) * 2011-02-23 2012-08-29 鸿富锦精密工业（深圳）有限公司 导风罩及具有该导风罩的电子装置
CN213402646U (zh) * 2020-10-27 2021-06-08 湖北惠洋电器制造有限公司 一种外转子电机系统
WO2021196516A1 (zh) * 2020-03-28 2021-10-07 中山大洋电机股份有限公司 一种外转子电机
CN216530859U (zh) * 2021-10-29 2022-05-13 中山大洋电机股份有限公司 一种外转子电机
JP2022150126A (ja) * 2021-03-26 2022-10-07 日立グローバルライフソリューションズ株式会社 モーター装置及びそれを搭載した製品

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101338731A (zh) * 2008-07-15 2009-01-07 宁波银风能源科技股份有限公司 集风型筒式水平轴发电系统
CN201312471Y (zh) * 2008-12-05 2009-09-16 讯凯国际股份有限公司 导风罩
CN102651953A (zh) * 2011-02-23 2012-08-29 鸿富锦精密工业（深圳）有限公司 导风罩及具有该导风罩的电子装置
WO2021196516A1 (zh) * 2020-03-28 2021-10-07 中山大洋电机股份有限公司 一种外转子电机
CN213402646U (zh) * 2020-10-27 2021-06-08 湖北惠洋电器制造有限公司 一种外转子电机系统
JP2022150126A (ja) * 2021-03-26 2022-10-07 日立グローバルライフソリューションズ株式会社 モーター装置及びそれを搭載した製品
CN216530859U (zh) * 2021-10-29 2022-05-13 中山大洋电机股份有限公司 一种外转子电机

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