WO2018018905A1 - 一种外转子电机 - Google Patents

一种外转子电机 Download PDF

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Publication number
WO2018018905A1
WO2018018905A1 PCT/CN2017/077723 CN2017077723W WO2018018905A1 WO 2018018905 A1 WO2018018905 A1 WO 2018018905A1 CN 2017077723 W CN2017077723 W CN 2017077723W WO 2018018905 A1 WO2018018905 A1 WO 2018018905A1
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WIPO (PCT)
Prior art keywords
sleeve
bottom plate
rotating shaft
outer rotor
stator assembly
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PCT/CN2017/077723
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English (en)
French (fr)
Inventor
邹光华
曾崇生
张笛
陈挥秀
周慧云
Original Assignee
中山大洋电机股份有限公司
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Application filed by 中山大洋电机股份有限公司 filed Critical 中山大洋电机股份有限公司
Publication of WO2018018905A1 publication Critical patent/WO2018018905A1/zh

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    • 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
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • 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
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • 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

Definitions

  • the utility model relates to an outer rotor motor.
  • Existing stators for use on outer rotor motors typically include a socket block and a stator assembly, wherein the stator assembly includes a stator core laminated from a plurality of silicon steel sheets, end insulation mounted on the end faces of the stator cores, and wound The coil winding on the end insulation, the plastic body is plastically sealed and then placed outside the sleeve.
  • the stator assembly includes a stator core laminated from a plurality of silicon steel sheets, end insulation mounted on the end faces of the stator cores, and wound The coil winding on the end insulation, the plastic body is plastically sealed and then placed outside the sleeve.
  • heat dissipation has always been a relatively difficult technical problem. The heat generated by the bearing during long-term operation is difficult to dissipate in the whole machine, which makes the operation of the motor unreliable and shortens the service life of the motor.
  • the purpose of the utility model is to provide an outer rotor motor, which can effectively solve the heat dissipation problem of the outer rotor motor, improve the service life of the bearing and the service life of the motor, and ensure the normal operation of the motor.
  • An outer rotor motor comprising a rotating shaft, a stator assembly, an outer rotor and a sleeve seat, wherein the stator assembly comprises a stator core, an end insulation and a coil winding, the sleeve seat comprising a bottom plate and a middle portion from the bottom plate
  • the upper sleeve has a bearing chamber at both ends of the sleeve, and the bearing chamber is provided with a bearing therein, the rotating shaft is located inside the sleeve and the two ends are respectively supported on the bearing, and the outer rotor includes the casing sleeve and the mounting a plurality of permanent magnets on the inner wall surface of the casing sleeve, one end of the rotating shaft protrudes from the sleeve and is installed and connected with the casing sleeve, the stator assembly is nested and installed outside the sleeve, and the outer rotor is sleeved outside the stator assembly.
  • the bottom end surface of the bottom plate is provided with a plurality of protrusions and a heat dissipation rib distributed around the circumference of the rotating shaft, and an air passage is formed between the adjacent two heat dissipation ribs, and an inner end of each heat dissipation rib encloses a receiving cavity for accommodating the cavity
  • a fan is embedded therein, and one end of the rotating shaft protrudes from the bottom plate and is connected with a fan inside the accommodating cavity.
  • the permanent magnets described above are evenly distributed in the casing sleeve through the bracket.
  • the bracket comprises an outer ring, an inner ring and a rib blade connecting the outer ring and the inner ring, and the outer ring is provided with a plurality of partition blocks.
  • a permanent magnet is installed between the adjacent partition blocks, and a ventilation hole is formed in the top of the casing sleeve.
  • the bottom end surface of the bottom plate is provided with a plurality of through holes, and a cavity is formed between the stator assembly, the rotor assembly and the sleeve seat, and the through hole communicates the cavity with the receiving cavity.
  • the air outlet of the through hole described above is located in the accommodating cavity, and the plurality of through holes are evenly distributed around the rotating shaft.
  • the heat dissipating rib described above extends from the inner end thereof toward the outer end in a direction away from the rotating shaft, and the fan is a centrifugal fan.
  • the air duct described above includes an inlet and an outlet, and the inlet communicates with the accommodating chamber.
  • the protruding end of the rotating shaft protruding from the bottom plate is connected to the fan, and the fan is fixed on the rotating shaft by a snap spring.
  • stator assembly The stator assembly, the outer rotor and the sleeve seat described above are connected together by a molding body.
  • the controller is further connected to the controller under the above-mentioned bottom plate, and the controller comprises a control box, a control circuit board and a cover plate, and the control circuit board is installed in the control box, and the top plate of the control box is tightly attached under the heat dissipation ribs to seal On one side of the air duct, a cover is installed at the opening of the control box.
  • the outer side of the control box is provided with a mounting base connected to the mounting hole on the bottom plate, and is screwed from the mounting hole to the mounting seat by screws, and the bottom plate is locked with the controller.
  • the top plate of the control box is provided with a boss, the channel is provided with a passage, the passage is communicated with the inside of the control box, the bottom plate is provided with a bayonet, the boss is nested inside the bayonet, and the wires inside the control box pass through the passage and the stator Component connection.
  • the bottom end surface of the bottom plate of the sleeve seat is provided with a plurality of fins distributed around the circumference of the rotating shaft, and air passages are formed between the adjacent two heat dissipating ribs to improve the heat dissipation effect and improve the heat dissipation of the motor. performance;
  • the permanent magnet is evenly distributed in the casing sleeve through the bracket, the bracket comprises an outer ring, an inner ring and a rib blade connecting the outer ring and the inner ring, and the outer ring is provided with a plurality of partition blocks, the phase A permanent magnet is arranged between the adjacent partition blocks, and a ventilation hole is arranged at the top of the casing sleeve, and a plurality of through holes are arranged on the bottom end surface of the bottom plate, the through hole communicates the cavity with the accommodating cavity, and a fan is embedded in the accommodating cavity, the fan It is a centrifugal fan.
  • the rib blade is similar to the centrifugal fan blade, and the cold air is sucked through the vent hole of the casing sleeve to stir the airflow and assist the electricity.
  • the heat is dissipated, and the cold airflow enters the cavity from the vent hole when the fan rotates.
  • the air is discharged from the through hole to the accommodating cavity through the inlet and enters the air passage from the outlet, thereby forming an air flow passage from top to bottom in the whole machine, which is beneficial to solve the whole problem.
  • Machine cooling effect
  • each heat dissipation rib is surrounded by a accommodating cavity, and a fan is embedded in the accommodating cavity, and one end of the rotating shaft protrudes from the bottom plate and is connected with the centrifugal fan inside the accommodating cavity, which can accelerate heat dissipation and has good heat dissipation effect;
  • a plurality of through holes are formed in the bottom end surface of the bottom plate, and a cavity is formed between the stator assembly, the rotor assembly and the sleeve seat, the through hole communicates the cavity with the accommodating cavity, a fan is embedded in the accommodating cavity, and the fan is centrifuged The airflow generated by the fan and the fan rotates from the through hole to the accommodating cavity to enter the air duct from the outlet through the inlet, thereby discharging the motor together with the heat, thereby facilitating the heat dissipation effect of the whole machine;
  • the controller is connected to the bottom of the bottom plate, and the top plate of the control box is closely attached to the lower side of each heat dissipation rib to block one side of the air passage, and the structure is simpler and more practical;
  • the top plate of the control box is provided with a boss, the channel is provided with a channel, the channel is connected with the inside of the control box, the bottom plate is provided with a bayonet, the boss is nested inside the bayonet, and the wires inside the control box pass through the passage Connected to the stator assembly for accurate positioning and easy installation.
  • Figure 1 is a perspective view of a partial part in the embodiment
  • Figure 2 is a front elevational view of a partial part of the embodiment
  • Figure 3 is an exploded view of a partial part in the embodiment
  • Figure 4 is a perspective view of the outer rotor motor in the embodiment
  • Figure 5 is an exploded view of the sleeve seat and the controller in the embodiment
  • Figure 6 is a cross-sectional view of the sleeve seat and the controller in the embodiment
  • Figure 7 is an exploded view of the outer rotor motor in the embodiment
  • Figure 8 is a front elevational view of the outer rotor motor in the embodiment.
  • Figure 9 is a cross-sectional view taken along line A-A of Figure 8.
  • Figure 10 is a flow direction of the air flow of the outer rotor motor in the embodiment.
  • Embodiment 1 As shown in FIGS. 1 to 10, this embodiment is an outer rotor motor including a rotating shaft 1, a stator assembly 2, an outer rotor 3, and a sleeve seat 4, wherein the stator assembly 2 includes a stator core 21, the end insulation 22 and the coil winding 23, the sleeve 4 includes a bottom plate 41 and a sleeve 42 projecting upward from the middle of the bottom plate 41.
  • a bearing chamber 421 is opened at both ends of the sleeve 42, and the bearing chamber 421 is opened.
  • a bearing 422 is mounted therein, and the rotating shaft 1 is located inside the sleeve 42 and supported at both ends on the bearing 421.
  • the outer rotor 3 includes a casing sleeve 31 and a plurality of permanent magnets mounted on the inner wall surface of the casing sleeve 31. 32.
  • One end of the rotating shaft 1 extends from the sleeve 42 and is mounted and coupled with the casing sleeve 31.
  • the stator assembly 2 is nested outside the sleeve 42 and the outer rotor 3 is sleeved outside the stator assembly 2, and the bottom end surface of the bottom plate 41 is closed.
  • a plurality of fins 5 are arranged on the circumference of the rotating shaft 1 , and air passages 51 are formed between the adjacent two radiating ribs 5 .
  • each of the heat radiating ribs 5 encloses a receiving cavity 7 .
  • a fan 6 is embedded in the accommodating cavity 7, and one end of the rotating shaft 1 protrudes from the bottom plate 41 and is connected to the fan 6 inside the accommodating cavity 7.
  • the permanent magnet 32 is evenly distributed in the casing sleeve 31 by the bracket 34.
  • the bracket 34 includes an outer ring 343, an inner ring 342, and a rib blade 341 connecting the outer ring 343 and the inner ring 342, and the outer ring 343
  • a plurality of partition blocks 3431 are disposed on the upper side, and a permanent magnet 32 is disposed between the adjacent partition blocks 3431.
  • the ventilating hole 33 is defined in the top of the casing sleeve 31.
  • the rib blade 341 is similar to the centrifugal fan blade, and the cold air is sucked into the sleeve outer casing 31 from the vent hole 33 at the top of the casing sleeve 31 to provide a better heat dissipation effect for the motor.
  • a plurality of through holes 411 are defined in the bottom end surface of the bottom plate 41.
  • a cavity 8 is formed between the stator assembly 2, the rotor assembly and the sleeve seat 4, and the through hole 411 communicates the cavity 8 with the accommodating cavity 7.
  • the hot air in the motor is discharged from the through hole 411 of the bottom plate 41 through the fan 6 in the accommodating cavity 7, and enters the air passage 51 through the inlet 511 to exit the motor from the outlet 512, thereby forming a gas flow passage of the whole machine to provide better motor. Cooling effect.
  • the air outlet of the through hole 411 is located in the accommodating cavity 7, and the plurality of through holes 411 are evenly distributed around the rotating shaft 1.
  • the heat radiating rib 5 extends from the inner end 52 thereof away from the rotating shaft 1 to the outer end 53 thereof, the fan 6 is a centrifugal fan, and the airflow generated when the fan 6 rotates from the through hole 411 to the accommodating cavity 7 enters the air duct 51 through the inlet 511 and exits the motor from the outlet 512, whereby the airflow discharges the motor together with heat, which is beneficial to solve the whole machine. heat radiation.
  • the air duct 51 includes an inlet 511 and an outlet 512, and the inlet 511 is in communication with the accommodating chamber 7.
  • the rotating shaft 1 extends from the extended end 11 of the bottom plate 41 to the fan 6, and the fan 6 is fixed to the rotating shaft 1 by a snap spring 61.
  • the stator assembly 2, the outer rotor 3 and the sleeve seat 4 are connected together by a molding body.
  • the controller 11 is further connected to the bottom plate 41.
  • the controller 9 includes a control box 90, a control circuit board 91 and a cover plate 92.
  • the control circuit board 91 is mounted inside the control box 90, and the top plate (901) of the control box 9 is tightly attached.
  • a cover plate 92 is attached to the opening of the control box 90 at the lower side of each of the heat radiating ribs 5 to seal the side of the air passage 51.
  • the outer side of the control box 90 is provided with a mounting seat 93 that is connected to the mounting hole 412 on the bottom plate 41, and is screwed from the mounting hole 412 to the mounting seat 93 by screws 94 to lock the bottom plate 41 and the controller 9.
  • the top plate 901 of the control box 9 is provided with a boss 902.
  • the boss 902 is provided with a channel 9021.
  • the channel communicates with the inside of the control box 90.
  • the bottom plate 41 is provided with a bayonet 413, and the boss 902 is nested inside the bayonet 413 for control.
  • the wires inside the box 90 pass through the channel 9021 and are connected to the stator assembly 2.
  • the bottom end surface of the bottom plate 41 is provided with a plurality of radiating ribs 5 which are distributed around the circumference of the rotating shaft 1, and the air passages 51 are formed between the adjacent two radiating ribs 5 to improve the heat dissipation effect and improve the motor.
  • the heat dissipation performance; the inner end 52 of each of the heat dissipation ribs 5 is surrounded by a receiving cavity 7 , and a fan 6 is embedded in the accommodating cavity 7 , and one end of the rotating shaft 1 protrudes from the bottom plate 41 and is connected with the fan 6 inside the accommodating cavity 7 .
  • the heat dissipation can be accelerated, and the heat dissipation effect is good; a plurality of through holes 411 are formed on the bottom end surface of the bottom plate 41, and a cavity 8 is formed between the stator assembly 2, the rotor assembly and the sleeve seat 4, and the through hole 411 covers the cavity 8 and the receiving cavity. 7 is connected, a fan 6 is embedded in the accommodating cavity 7, and the fan 6 is a centrifugal fan.
  • the airflow generated when the fan 6 rotates is discharged from the through hole to the accommodating cavity 7 through the inlet 511 into the air duct 51 and exits the motor from the outlet 512.
  • the airflow is discharged together with the heat to the motor, which is beneficial to solve the heat dissipation effect of the whole machine.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

一种外转子电机，包括转轴（1）、定子组件（2）、外转子（3）和套筒座（4），定子组件包括定子铁芯（21）、端部绝缘（22）和线圈绕组（23），套筒座包括底板（41）和从底板中间往上凸起的套筒（42），在套筒两端开设有轴承室（421），轴承室里面安装有轴承（422），转轴位于套筒里面并且两端分别支承在轴承上，外转子包括机壳套筒（31）和安装在机壳套筒内壁面上的若干永磁体（32），转轴一端从套筒伸出与机壳套筒安装连接在一起，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，底板底端面上设有若干条凸起且围绕着转轴周向分布的散热筋（5），相邻的两个散热筋之间形成风道（51），各散热筋的内端（52）围成一容置腔（7），容置腔里面嵌入一风扇（6），转轴的一端伸出底板并与容置腔里面的风扇连接。该结构提高了散热效果，使整机散热更快。

Description

一种外转子电机 技术领域：
本实用新型涉及一种外转子电机。
背景技术：
现有使用在外转子电机上的定子通常包括套筒座和定子组件，其中定子组件包括由若干硅钢片叠压而成的定子铁芯、安装在定子铁芯端面上的端部绝缘和绕制在端部绝缘上的线圈绕组，塑封体把所述的定子组件塑封之后再套装在套筒座外面。但是散热一直都是个较为棘手的技术问题，轴承在长时间的运行过程中产生的热量在整机里难以散去，使得电机的运行变得不可靠，同时缩短了电机的使用寿命。
发明内容：
本实用新型的目的是提供一种外转子电机，可以有效解决外转子电机散热问题，提高轴承使用寿命和电机的使用寿命，保证电机正常运行。
本实用新型的目的是通过下述技术方案予以实现的。
一种外转子电机，包括转轴、定子组件、外转子和套筒座，其中所述的定子组件包括定子铁芯、端部绝缘和线圈绕组，所述的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，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，底板底端面上设有若干条凸起且围绕着转轴周向分布的散热筋，相邻的两个散热筋之间形成风道，各散热筋的内端围成一容置腔，容置腔里面嵌入一风扇，转轴的一端伸出底板并与容置腔里面的风扇连接。
上述所述的永磁体通过支架均匀分布安装在机壳套筒里，所述支架包括外圈、内圈以及连接外圈和内圈的筋条风叶，外圈上设置有若干分隔块，相邻分隔块之间安装永磁体，机壳套筒顶部开设有通风孔。
上述所述的底板底端面上设有若干个通孔，定子组件、转子组件和套筒座之间形成空腔，通孔将空腔与容置腔连通。
上述所述的通孔的出风口位于容置腔，若干个通孔围绕转轴均布。
上述所述的所述散热筋自其内端朝远离转轴的方向延伸至其外端，所述风扇是离心风扇。
上述所述的风道包括入口和出口，入口与容置腔连通。
上述所述的转轴伸出底板的伸出端与风扇连接上，风扇通过卡簧固定在转轴上。
上述所述的定子组件、外转子和套筒座通过塑封体连接在一起。
上述所述的所述的底板下面还连接控制器，控制器包括控制盒、控制线路板和盖板，控制线路板安装在控制盒里面，控制盒的顶板贴紧在各散热筋的下面以封堵风道的一侧，控制盒的开口处安装盖板。
控制盒的外侧设有与底板上的安装孔连接的安装座，通过螺钉从安装孔旋进到安装座上，将底板与控制器锁紧在一起。
控制盒的顶板设置有一个凸台，凸台上设置有通道，通道与控制盒里面连通，底板设置有卡口，凸台嵌套在卡口里面，控制盒里面的电线从通道穿过与定子组件连接。
本实用新型与现有技术相比，具有如下效果：
1)套筒座的底板的底端面上设有若干条凸起且围绕着转轴周向分布的散热筋，相邻的两个散热筋之间形成风道，提高散热效果，提高了电机的散热性能；
2)所述永磁体通过支架均匀分布安装在机壳套筒里，所述支架包括外圈、内圈以及连接外圈和内圈的筋条风叶，外圈上设置有若干分隔块，相邻分隔块之间安装永磁体，机壳套筒顶部开设有通风孔，底板底端面上设有若干个通孔，通孔将空腔与容置腔连通，容置腔里面嵌入一风扇，风扇是离心风扇。所述筋条风叶类似离心风叶，通过机壳套筒的通风孔吸入冷风，在搅拌气流，辅助电 机散热，风扇转动时冷气流从通风孔进入空腔在从通孔到容置腔在通过入口进入风道从出口排出电机，由此在整机从上到下形成气流通道，有利于解决整机散热效果；
3)各散热筋的内端围成一容置腔，容置腔里面嵌入一风扇，转轴的一端伸出底板并与容置腔里面的离心风扇连接，可以加快散热，散热效果好；
4)底板底端面上设有若干个通孔，定子组件、转子组件和套筒座之间形成空腔，通孔将空腔与容置腔连通，容置腔里面嵌入一风扇，风扇是离心风扇，风扇转动时产生的气流自通孔到容置腔在通过入口进入风道从出口排出电机，由此气流带着热量一起排出电机，有利于解决整机散热效果；
5)所述的底板下面还连接控制器，控制盒的顶板贴紧在各散热筋的下面以封堵风道的一侧，结构更加简单实用；
5)控制盒的顶板设置有一个凸台，凸台上设置有通道，通道与控制盒里面连通，底板设置有卡口，凸台嵌套在卡口里面，控制盒里面的电线从通道穿过与定子组件连接，定位准确，安装方便。
附图说明：
图1是实施例中局部零件的立体图；
图2是实施例中局部零件的主视图；
图3是实施例中局部零件的分解图；
图4是实施例中外转子电机的立体图；
图5是实施例中套筒座与控制器的分解图；
图6是实施例中套筒座与控制器的剖视图；
图7是实施例中外转子电机的分解图；
图8是实施例中外转子电机的主视图；
图9是图8中A-A的剖视图；
图10是实施例中外转子电机的气流流动走向。
具体实施方式：
下面通过具体实施例并结合附图对本实用新型作进一步详细的描述。
实施例一：如图1至10所示，本实施例是一种外转子电机，包括转轴1、定子组件2、外转子3和套筒座4，其中所述的定子组件2包括定子铁芯21、端部绝缘22和线圈绕组23，所述的套筒座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421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，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，底板41底端面上设有若干条凸起且围绕着转轴1周向分布的散热筋5，相邻的两个散热筋5之间形成风道51，各散热筋5的内端52围成一容置腔7，容置腔7里面嵌入一风扇6，转轴1的一端伸出底板41并与容置腔7里面的风扇6连接。
所述永磁体32通过支架34均匀分布安装在机壳套筒31里，所述支架34包括外圈343、内圈342以及连接外圈343和内圈342的筋条风叶341，外圈343上设置有若干分隔块3431，相邻分隔块3431之间安装永磁体32，机壳套筒31顶部开设有通风孔33。当外转子3旋转时，筋条风叶341类似于离心风叶，从机壳套筒31顶部的通风孔33将冷风吸进套筒外壳31内，为电机提供更好的散热效果。
底板41底端面上设有若干个通孔411，定子组件2、转子组件和套筒座4之间形成空腔8，通孔411将空腔8与容置腔7连通。当外转子3旋转时，容置腔7中的风扇6和筋条风叶341同时运转，筋条风叶341将机壳套筒31顶部的通风孔33将冷风吸进机壳套筒31内，在通过容置腔7中风扇6将电机内的热风从底板41的通孔411排出，通过入口511进入风道51从出口512排出电机外，形成一个整机的气流通道为电机提供更好的散热效果。
通孔411的出风口位于容置腔7，若干个通孔411围绕转轴1均布。
所述散热筋5自其内端52朝远离转轴1的方向延伸至其外端53，所述风扇 6是离心风扇,风扇6转动时产生的气流自通孔411到容置腔7在通过入口511进入风道51从出口512排出电机，由此气流带着热量一起排出电机，有利于解决整机散热效果。
所述的风道51包括入口511和出口512，入口511与容置腔7连通。
所述转轴1伸出底板41的伸出端11与风扇6连接上，风扇6通过卡簧61固定在转轴1上。
所述定子组件2、外转子3和套筒座4通过塑封体连接在一起。
所述的底板41下面还连接控制器9，控制器9包括控制盒90、控制线路板91和盖板92，控制线路板91安装在控制盒90里面，控制盒9的顶板(901)贴紧在各散热筋5的下面以封堵风道51的一侧，控制盒90的开口处安装盖板92。
控制盒90的外侧设有与底板41上的安装孔412连接的安装座93，通过螺钉94从安装孔412旋进到安装座93上，将底板41与控制器9锁紧在一起。
控制盒9的顶板901设置有一个凸台902，凸台902上设置有通道9021，通道与控制盒90里面连通，底板41设置有卡口413，凸台902嵌套在卡口413里面，控制盒90里面的电线从通道9021穿过与定子组件2连接。
发明原理:底板41的底端面上设有若干条凸起且围绕着转轴1周向分布的散热筋5，相邻的两个散热筋5之间形成风道51，提高散热效果，提高了电机的散热性能；各散热筋5的内端52围成一容置腔7，容置腔7里面嵌入一风扇6，转轴1的一端伸出底板41并与容置腔7里面的风扇6连接，可以加快散热，散热效果好；底板41底端面上设有若干个通孔411，定子组件2、转子组件和套筒座4之间形成空腔8，通孔411将空腔8与容置腔7连通，容置腔7里面嵌入一风扇6，风扇6是离心风扇，风扇6转动时产生的气流自通孔到容置腔7在通过入口511进入风道51从出口512排出电机，由此气流带着热量一起排出电机，有利于解决整机散热效果。
以上实施例为本发明的较佳实施方式，但本发明的实施方式不限于此，其他 任何未背离本发明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，都包含在本发明的保护范围之内。

Claims (11)

  1. 一种外转子电机，包括转轴(1)、定子组件(2)、外转子(3)和套筒座(4)，其中所述的定子组件(2)包括定子铁芯(21)、端部绝缘(22)和线圈绕组(23)，所述的套筒座(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(421)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，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，其特征在于：底板(41)底端面上设有若干条凸起且围绕着转轴(1)周向分布的第一散热筋(5)，相邻的两个第一散热筋(5)之间形成风道(51)，各第一散热筋(5)的内端(52)围成一容置腔(7)，容置腔(7)里面嵌入一风扇(6)，转轴(1)的一端伸出底板(41)并与容置腔(7)里面的风扇(6)连接。
  2. 根据权利要求1所述的一种外转子电机，其特征在于：所述永磁体(32)通过支架(34)均匀分布安装在机壳套筒(31)里，所述支架(34)包括外圈(343)、内圈(342)以及连接外圈(343)和内圈(342)的筋条风叶(341)，外圈(343)上设置有若干分隔块(3431)，相邻分隔块(3431)之间安装永磁体(32)，机壳套筒(31)顶部开设有通风孔(33)。
  3. 根据权利要求1所述的一种外转子电机，其特征在于：底板(41)底端面上设有若干个通孔(411)，定子组件(2)、转子组件和套筒座(4)之间形成空腔(8)，通孔(411)将空腔(8)与容置腔(7)连通。
  4. 根据权利要求3所述的一种外转子电机，其特征在于：通孔(411)的出风口位于容置腔(7)，若干个通孔(411)围绕转轴(1)均布。
  5. 根据权利要求1或2或3或4所述的一种外转子电机，其特征在于：所述第一散热筋(5)自其内端(52)朝远离转轴(1)的方向延伸至其外端(53)，所述风扇(6)是离心风扇。
  6. 根据权利要求5所述的一种外转子电机，其特征在于：所述的风道(51)包括入口(511)和出口(512)，入口(511)与容置腔(7)连通。
  7. 根据权利要求6所述的一种外转子电机，其特征在于：所述转轴(1)伸出底板(41)的伸出端(11)与风扇(6)连接上，风扇(6)通过卡簧(61)固定在转轴(1)上。
  8. 根据权利要求7所述的一种外转子电机，其特征在于：所述定子组件(2)、外转子(3)和套筒座(4)通过塑封体连接在一起。
  9. 根据权利要求1或3或4所述的一种外转子电机，其特征在于：所述的底板(41)下面还连接控制器(9)，控制器(9)包括控制盒(90)、控制线路板(91)和盖板(92)，控制线路板(91)安装在控制盒(90)里面，控制盒(9)的顶板(901)贴紧在各第一散热筋(5)的下面以封堵风道(51)的一侧，控制盒(90)的开口处安装盖板(92)。
  10. 根据权利要求9所述的一种外转子电机，其特征在于：控制盒(90)的外侧设有与底板(41)上的安装孔(412)连接的安装座(93)，通过螺钉(94)从安装孔(412)旋进到安装座(93)上，将底板(41)与控制器(9)锁紧在一起。
  11. 根据权利要求10所述的一种外转子电机，其特征在于：控制盒(9)的顶板(901)设置有一个凸台(902)，凸台(902)上设置有通道(9021)，通道与控制盒(90)里面连通，底板(41)设置有卡口(413)，凸台(902)嵌套在卡口(413)里面，控制盒(90)里面的电线从通道(9021)穿过与定子组件(2)连接。
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