WO2013123631A1 - 自散热电机 - Google Patents

自散热电机 Download PDF

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Publication number
WO2013123631A1
WO2013123631A1 PCT/CN2012/071323 CN2012071323W WO2013123631A1 WO 2013123631 A1 WO2013123631 A1 WO 2013123631A1 CN 2012071323 W CN2012071323 W CN 2012071323W WO 2013123631 A1 WO2013123631 A1 WO 2013123631A1
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WIPO (PCT)
Prior art keywords
self
housing
electric motor
motor
fan blade
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PCT/CN2012/071323
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English (en)
French (fr)
Inventor
刘锦堂
Original Assignee
Liu Ching-Tang
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Application filed by Liu Ching-Tang filed Critical Liu Ching-Tang
Priority to PCT/CN2012/071323 priority Critical patent/WO2013123631A1/zh
Publication of WO2013123631A1 publication Critical patent/WO2013123631A1/zh

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    • 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
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

Definitions

  • the present invention relates to the field of electrical machinery, and more particularly to a self-heating motor.
  • motors are widely used in the electronics and automation equipment industry.
  • the generated heat accumulates with the increase of the future time, so that the temperature inside the motor gradually rises, which affects the working performance of the internal parts of the motor, and has a great influence on the service life of each part.
  • the present invention is directed to the absence of the prior art, and its main object is to provide a self-heating motor that actively draws air from the inside of the motor to take away the heat of the motor itself to lower the temperature of the motor.
  • a self-heating motor includes a housing, a stator, a rotor and a motor shaft, wherein the housing has an end cover, and the outer cover of the end cover is provided with a fan blade that draws air from the inside of the housing, and the blade rotates along with the motor shaft And, corresponding to the position of the blade, a heat dissipation hole is provided on the end cover to facilitate the flow of air out of the casing.
  • the housing is sleeved on the motor shaft and rotates along with the motor shaft.
  • the end cover of the housing is outwardly formed with a socket portion along the direction of the motor shaft, and the blade is fastened. On the socket.
  • the fan blade is provided with a sleeve hole, and the inner side wall of the sleeve hole is recessed with a card slot.
  • the outer peripheral side of the sleeve portion of the end cover is convexly provided with a card block. Embedded in the card slot.
  • the blade includes a substrate portion and a plurality of blades integrally connected to the substrate portion, wherein the sleeve hole is opened at an intermediate position of the substrate portion, and the plurality of blades are evenly distributed around the socket hole, and the blade Located between the substrate portion and the aforementioned end cap.
  • the plurality of blades are distributed in a ray shape around the sleeve hole.
  • a flow guiding groove is formed between the two adjacent blades, and the plurality of heat dissipation holes are respectively disposed, and each of the heat dissipation holes is respectively disposed corresponding to a flow guiding groove.
  • the outer end surface of the substrate portion has a flat plate structure, and an inner end surface thereof is formed with a convex ring toward the housing, and the sleeve hole is located in the convex ring, and the inner end surface of the substrate is tapered toward the end surface of the convex ring. Curved surface structure.
  • the plurality of blades are perpendicular to the outer end surface of the substrate portion along the extending direction of the rotating shaft.
  • a circuit board is further disposed, the circuit board is disposed perpendicular to the motor shaft, and a heat insulation board is disposed between the circuit board and the stator.
  • a gap is formed between one side of the circuit board and the heat insulation board, and the other side of the circuit board is open-ended.
  • the motor of the invention By adding a fan blade that can draw air from the inside of the casing, actively extracting air from the inside of the motor to realize independent heat dissipation, compared with the self-heating motor product in which the fan blade is blown toward the inside of the motor in the conventional technology, the motor of the invention
  • the product's self-heating effect is better, it can take the heat of the motor itself faster to reduce the temperature of the motor, and it can be applied to higher temperature environment, further expanding the application space of the motor product, and also helping to maintain Better working performance and long service life of motor products;
  • the blade structure of the present invention has blades distributed around the sleeve hole in a radial manner, and can effectively draw air from the inside of the casing regardless of whether the motor shaft rotates forward or reverse.
  • the blade only The self-heating motor product capable of blowing air toward the inside of the motor when the motor shaft rotates forward or reverse, the blade structure can be applied to more motor products to meet the heat dissipation requirements of different motor products;
  • the aforementioned heat dissipation holes are arranged corresponding to the guide grooves of the fan blades to facilitate the air flow, so that the fan blades can better extract the hot air from the inside of the casing.
  • FIG. 1 is a schematic perspective view of a preferred embodiment of the present invention
  • Figure 2 is an enlarged schematic cross-sectional view taken along line M-M of Figure 1;
  • Figure 3 is an exploded perspective view of a preferred embodiment of the present invention.
  • Figure 4 is another exploded perspective view of a preferred embodiment of the present invention.
  • Figure 5 is a perspective view showing the three-dimensional structure of a blade in a preferred embodiment of the present invention.
  • Figure 6 is a further exploded perspective view of a preferred embodiment of the present invention.
  • Figure 7 is a perspective view showing the structure of a support base in a preferred embodiment of the present invention.
  • FIGS. 1 through 7 there is shown a specific structure of a preferred embodiment of the present invention including a housing 10, a stator 20, a rotor 30, a motor shaft 40, a blade 50, and a circuit board 60.
  • the internal structure and working principle of the motor are not the innovations of this case, and will not be repeated here.
  • the housing 10 is sleeved on the motor shaft 40 and rotates along with the motor shaft 40.
  • the housing 10 has an end cover 11 formed with a sleeve portion 111 in the direction of the motor shaft 40.
  • a latching block 1111 is protruded from the outer peripheral side of the socket portion 111, and a third heat dissipating hole 112 for allowing air to flow out of the casing 10 is formed on the end cover 11 corresponding to the position of each of the guide vanes 53 of the fan blade 50 described below.
  • the blade 50 is a blade 50 that is capable of drawing air from the inside of the casing 10, which is located outside the end cover 11 and rotates with the motor shaft 40 without consuming additional electric energy.
  • the blade 50 includes a substrate portion 51 and a plurality of blades 52 integrally connected to the substrate portion 51.
  • the outer surface of the substrate portion 51 has a flat plate structure, and an inner end surface thereof is formed toward the housing 10.
  • a convex ring 511 is formed in the convex ring 511 with a socket hole 512.
  • the inner end surface of the substrate portion 51 has a gradual curved structure toward the end surface of the convex ring 511.
  • the blade 52 is located between the substrate portion 51 and the end cover 11.
  • the plurality of blades 52 are uniformly distributed around the sleeve hole 111 in a radial direction, and the plurality of blades 52 are perpendicular to the outer end surface of the substrate portion 51 along the extending direction of the motor shaft 40, and are formed between the adjacent two blades 52.
  • the blade 50 is fastened to the sleeve portion 111 of the end cover 11 .
  • the specific structure is that the inner side wall of the sleeve hole 512 is recessed with a card slot 513 .
  • the block 1111 on the outer peripheral side of the sleeve portion 111 is fitted into the card slot 513.
  • the circuit board 60 is disposed perpendicular to the motor shaft 40, and a heat insulating plate 70 is disposed between the circuit board 60 and the stator 20 to prevent heat generated during the operation of the stator 20 from being transmitted to the circuit board 60, thereby damaging the circuit board.
  • the heat dissipation plate 70 is provided with a first heat dissipation hole 71
  • the second heat dissipation hole 61 is disposed on the circuit board 60 corresponding to the first heat dissipation hole 71; the heat insulation plate 70 and the circuit board 60 side are There is a certain gap formed therebetween, and the other side of the circuit board 60 is an open structure without shielding, thus facilitating heat dissipation of the circuit board 60 itself.
  • the stator 20 includes a coil 21 and a support base 22, and the support base 22 includes a shaft column 221 disposed along the direction of the motor shaft 40.
  • the heat shield plate 70 is integrally formed on the shaft post 221, and the heat shield plate 70 is perpendicular to the shaft.
  • the shaft 221 is disposed, and the heat insulating plate 70 is provided with a leg 80.
  • the shaft 221 is formed on the two sides of the heat insulating plate 70 with a front end portion 2211 and a rear end portion 2212.
  • the coil 21 is fixed to the outer periphery of the front end portion 2211.
  • the circuit board 60 is mounted on the periphery of the rear end portion 2212.
  • the motor shaft 40 rotates to drive the housing 10 and the blade 50 to rotate.
  • the blade 50 rotates, hot air is drawn from the inside of the housing 10 through the third heat dissipation hole 112 (as indicated by an arrow in FIG. 2). .
  • the design of the present invention is mainly focused on the provision of a fan blade that can be drawn from the inside of the casing to actively draw air from the inside of the motor to realize independent heat dissipation.
  • the self-heating motor product of the fan blade toward the inside of the motor is blown.
  • the self-heating effect of the motor product is better, and the heat of the motor itself can be taken away to lower the temperature of the motor to be applied in a higher temperature environment, thereby further expanding the application space of the motor product.
  • it also helps to maintain the better working performance and long service life of the motor products;
  • the blade structure of the present invention can effectively draw air from the inside of the casing regardless of whether the motor shaft rotates forward or reverse. Compared with the conventional technology, the blade can only face the motor when the motor shaft rotates forward or reverse. For self-heating motor products with internal blowing, this blade structure can be applied to more motor products to meet the heat dissipation requirements of different motor products.

Abstract

一种自散热电机，包括壳体（10）、定子（20）、转子（30）及电机转轴（40），其中壳体具有端盖（11），该端盖外侧套设有从壳体内部往外抽风的扇叶（50），该扇叶随电机转轴旋转；端盖上对应于扇叶的位置开设有利于空气流出壳体的散热孔（112）。该电机通过加设能够从壳体内部往外抽风的扇叶，主动从内部抽风出来，相比于扇叶朝向电机内部吹风的传统自散热电机而言，该电机产品的自散热效果更佳，其能更快地将电机本身的热量带走以降低电机的温度，以应用于更高温度环境中，进一步拓展了电机产品的应用空间，同时也有助于维持电机产品的较佳工作性能和较长使用寿命。

Description

自散热电机 技术领域
本发明涉及电机领域技术，尤其是指一种自散热电机。
背景技术
目前，电机广泛应用于电子及自动化设备行业中。电机在运行过程中，所产生的热量随着未来时间的增长不断聚集，使得电机内部的温度逐渐升高，从而影响电机内部零件的工作性能，对各零件的使用寿命也有很大的影响。
针对此问题，有人设计出通过于电机产品中加设风扇，利用风扇对电机吹风以起到冷却降温作用，该方案一定程度上对电机起到了散热作用，但，其散热效果较差，电机内部的温度仍然较高，导致电机内部的元件仍然处于较恶劣的工作环境中。另外，现有的带自散热功能的电机，其风扇只能于电机转轴正转或反转时朝向电机内部吹风，因此，不能满足同一电机的正转和反转均能进行自散热。
因此，需研究出一种新的技术方案来解决上述不足。
发明内容
有鉴于此，本发明针对现有技术存在之缺失，其主要目的是提供一种自散热电机，其主动从电机内部抽风出来，以更快地将电机本身的热量带走来降低电机的温度。
为实现上述目的，本发明采用如下之技术方案：
一种自散热电机，包括壳体、定子、转子及电机转轴，其中，该壳体具有端盖，该端盖外侧套设有从壳体内部往外抽风的扇叶，该扇叶随同电机转轴旋转；以及，对应该扇叶位置，于端盖上开设利于空气流出壳体的的散热孔。
作为一种优选方案，所述壳体套接于前述电机转轴上，并随同电机转轴旋转，该壳体的端盖沿电机转轴方向向外形成有套接部，前述扇叶紧固式套接于该套接部上。
作为一种优选方案，所述扇叶开设有套接孔，该套接孔内侧壁上凹设有卡槽，相应地，前述端盖的套接部外周侧凸设有卡块，该卡块嵌于卡槽内。
作为一种优选方案，所述扇叶包括一基板部和一体连接于基板部上的若干叶片，前述套接孔开设于该基板部中间位置，前述若干叶片均布于套接孔周围，并叶片位于基板部和前述端盖之间。
作为一种优选方案，所述若干叶片呈射线状分布于前述套接孔周围。
作为一种优选方案，所述相邻两叶片之间均形成有导流槽，前述散热孔为若干个，每个散热孔分别对应一导流槽设置。
作为一种优选方案，所述基板部外端面呈平板状结构，其内端面朝向壳体形成有凸环，前述套接孔位于该凸环内，该基板内端面周边朝向凸环端面呈渐变式弧面结构。
作为一种优选方案，所述若干叶片均沿转轴延伸方向垂直于前述基板部外端面。
作为一种优选方案，进一步设置有电路板，该电路板垂直于前述电机转轴设置，并于电路板和前述定子之间设置有隔热板。
作为一种优选方案，所述电路板一侧与隔热板之间形成有间隙，且电路板的另一侧外部系敞开式结构。
本发明采用上述技术方案后，其有益效果在于：
一、通过加设能够从壳体内部往外抽风的扇叶，主动从电机内部抽风出来，实现自主散热，相比传统技术中扇叶朝向电机内部吹风的自散热电机产品而言，本发明之电机产品的自散热效果更佳，其能更快地将电机本身的热量带走以降低电机的温度，以应用于更高温度环境中，进一步拓展了电机产品的应用空间，同时，也有助于维持电机产品的较佳工作性能及较长使用寿命；
二、本发明中的扇叶结构，其叶片呈射线状分布于前述套接孔周围，不管电机转轴正转或反转时均能有效从壳体内部往外抽风，相比传统技术中扇叶只能于电机转轴正转或反转时朝向电机内部吹风的自散热电机产品而言，该种扇叶结构能够应用于更多的电机产品中，以满足不同电机产品的散热需求；
三、前述散热孔对应扇叶的导流槽设置，有助于空气流动，使得扇叶更好地从壳体内部将热空气往外抽走。
附图说明
图1是本发明之较佳实施例的立体结构示意图；
图2是图1中M-M处的截面放大示意图；
图3是本发明之较佳实施例的分解示意图；
图4是本发明之较佳实施例的另一分解示意图；
图5是本发明之较佳实施例中扇叶的立体结构示意图；
图6是本发明之较佳实施例的再一分解示意图；
图7是本发明之较佳实施例中支承座的立体结构示意图。
附图标识说明：
10、壳体 11、端盖
111、套接部 1111、卡块
112、第三散热孔 20、定子
21、线圈 22、支承座
221、轴柱 2211、前端部
2212、后端部 30、转子
40、电机转轴 50、扇叶
51、基板部 511、凸环
512、套接孔 513、卡槽
52、叶片 53、导流槽
60、电路板 61、第二散热孔
70、隔热板 71、第一散热孔
80、支脚
具体实施方式
请参见图1至图7所示，其显示出了本发明之较佳实施例的具体结构，包括有壳体10、定子20、转子30、电机转轴40、扇叶50及电路板60。电机的内部结构及工作原理皆不是本案的创新之处，在此不再赘述。
其中，该壳体10套接于前述电机转轴40上，并随同电机转轴40旋转；该壳体10具有端盖11，该端盖11沿电机转轴40方向向外形成有套接部111，并套接部111外周侧凸设有卡块1111，以及，对应下述扇叶50的每个导流槽53位置，于端盖11上开设利于空气流出壳体10的的第三散热孔112。
该扇叶50系能够从壳体10内部往外抽风的扇叶50，其位于前述端盖11外侧，并随同电机转轴40旋转，不用消耗额外的电能。如图5所示，该扇叶50包括一基板部51和一体连接于基板部51上的若干叶片52，其中，该基板部51外端面呈平板状结构，其内端面朝向壳体10形成有凸环511，于该凸环511内形成有套接孔512，该基板部51内端面周边朝向凸环511端面呈渐变式弧面结构；该叶片52位于基板部51和前述端盖11之间，所述若干叶片52呈射线状均布于前述套接孔111周围，且所述若干叶片52均沿电机转轴40延伸方向垂直于前述基板部51外端面，相邻两叶片52之间均形成有导流槽53。
于本实施例中，该扇叶50系紧固式套接于前述端盖11的套接部111上，具体结构为，前述套接孔512内侧壁上凹设有卡槽513，相应地，前述套接部111外周侧的卡块1111嵌于该卡槽513内。
该电路板60垂直于前述电机转轴40设置，并于电路板60和前述定子20之间设置有隔热板70，以免前述定子20工作时所产生的热量传递到电路板60上导致损坏电路板60，该隔热板70上开设有第一散热孔71，且电路板60上对应前述第一散热孔71位置开设有第二散热孔61；该隔热板70与电路板60一侧与之间形成有一定间隙，且电路板60的另一侧系敞开式结构，无遮挡，这样，便于电路板60自身的散热。
该定子20包括有线圈21和支承座22，该支承座22包括沿电机转轴40方向设置的轴柱221，前述隔热板70一体成型连接于前述轴柱221上，该隔热板70垂直于轴柱221设置，该隔热板70上设置有支脚80；该轴柱221于隔热板70两侧形成有前端部2211和后端部2212，前述线圈21固装于该前端部2211的外围，前述电路板60安装于该后端部2212的外围。
简述本实施例中电机的散热过程如下：
电机开始工作后，电机转轴40转动，带动壳体10及扇叶50旋转，扇叶50旋转时将热空气从壳体10内部经第三散热孔112抽出来(如图2中箭头所示)。
本发明的设计重点在于，主要系通过加设能够从壳体内部往外抽风的扇叶，主动从电机内部抽风出来，实现自主散热，相比传统技术中扇叶朝向电机内部吹风的自散热电机产品而言，本发明之电机产品的自散热效果更佳，其能更快地将电机本身的热量带走以降低电机的温度，以应用于更高温度环境中，进一步拓展了电机产品的应用空间，同时，也有助于维持电机产品的较佳工作性能及较长使用寿命；
其次是，本发明中的扇叶结构，不管电机转轴正转或反转时均能有效从壳体内部往外抽风，相比传统技术中扇叶只能于电机转轴正转或反转时朝向电机内部吹风的自散热电机产品而言，该种扇叶结构能够应用于更多的电机产品中，以满足不同电机产品的散热需求。
以上所述，仅是本发明的较佳实施例而已，并非对本发明的技术范围作任何限制，故凡是依据本发明的技术实质对以上实施例所作的任何细微修改、等同变化与修饰，均仍属于本发明技术方案的范围内。

Claims (10)

1 、一种自散热电机，包括壳体、定子、转子及电机转轴，其中，该壳体具有端盖，其特征在于：该端盖外侧套设有从壳体内部往外抽风的扇叶，该扇叶随同电机转轴旋转；以及，对应该扇叶位置，于端盖上开设利于空气流出壳体的的散热孔。
2 、根据权利要求1所述的自散热电机，其特征在于：所述壳体套接于前述电机转轴上，并随同电机转轴旋转，该壳体的端盖沿电机转轴方向向外形成有套接部，前述扇叶紧固式套接于该套接部上。
3 、根据权利要求2所述的自散热电机，其特征在于：所述扇叶开设有套接孔，该套接孔内侧壁上凹设有卡槽，相应地，前述端盖的套接部外周侧凸设有卡块，该卡块嵌于卡槽内。
4 、根据权利要求3所述的自散热电机，其特征在于：所述扇叶包括一基板部和一体连接于基板部上的若干叶片，前述套接孔开设于该基板部中间位置，前述若干叶片均布于套接孔周围，并叶片位于基板部和前述端盖之间。
5 、根据权利要求4所述的自散热电机，其特征在于：所述若干叶片呈射线状分布于前述套接孔周围。
6 、根据权利要求4所述的自散热电机，其特征在于：所述相邻两叶片之间均形成有导流槽，前述散热孔为若干个，每个散热孔分别对应一导流槽设置。
7 、根据权利要求4所述的自散热电机，其特征在于：所述基板部外端面呈平板状结构，其内端面朝向壳体形成有凸环，前述套接孔位于该凸环内，该基板内端面周边朝向凸环端面呈渐变式弧面结构。
8 、根据权利要求4所述的自散热电机，其特征在于：所述若干叶片均沿转轴延伸方向垂直于前述基板部外端面。
9 、根据权利要求1所述的自散热电机，其特征在于：进一步设置有电路板，该电路板垂直于前述电机转轴设置，并于电路板和前述定子之间设置有隔热板。
10 、根据权利要求 9 所述的自散热电机，其特征在于：所述电路板一侧与隔热板之间形成有间隙，且电路板的另一侧外部外部系敞开式结构。
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