WO2020258729A1 - 直流无刷电机 - Google Patents

直流无刷电机 Download PDF

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Publication number
WO2020258729A1
WO2020258729A1 PCT/CN2019/123163 CN2019123163W WO2020258729A1 WO 2020258729 A1 WO2020258729 A1 WO 2020258729A1 CN 2019123163 W CN2019123163 W CN 2019123163W WO 2020258729 A1 WO2020258729 A1 WO 2020258729A1
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WO
WIPO (PCT)
Prior art keywords
motor
end cover
cover
motor end
insulating
Prior art date
Application number
PCT/CN2019/123163
Other languages
English (en)
French (fr)
Inventor
钟贵烈
侯俊峰
吕继方
胡建
Original Assignee
广东美的白色家电技术创新中心有限公司
广东威灵电机制造有限公司
美的集团股份有限公司
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Application filed by 广东美的白色家电技术创新中心有限公司, 广东威灵电机制造有限公司, 美的集团股份有限公司 filed Critical 广东美的白色家电技术创新中心有限公司
Priority to JP2021535956A priority Critical patent/JP7160502B2/ja
Priority to KR1020217017251A priority patent/KR102565400B1/ko
Publication of WO2020258729A1 publication Critical patent/WO2020258729A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • 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
    • H02K5/08—Insulating casings
    • 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
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • 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
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • 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
    • H02K7/003—Couplings; Details of shafts

Definitions

  • the present disclosure relates to the technical field of electrical equipment, and in particular to a DC brushless motor.
  • the DC brushless motor is driven by a pulse width modulation (PWM) system.
  • PWM pulse width modulation
  • the shaft voltage will be generated due to the alternating magnetic field or the asymmetry of the magnetic circuit in the rotor.
  • the inner and outer rings of the rotor bearing are connected by balls, the balls and the receiving parts are reduced by oil film to reduce wear and insulation, the inner ring is connected with the bearing, and the outer ring is connected with the end cover.
  • the shaft voltage is greater than a certain value, the oil film will be broken down by insulation, causing electrical corrosion on the bearing balls or inner and outer ring surfaces, causing noise and shortening the bearing life; in severe cases, the motor cannot operate normally.
  • the two end covers of the motor are connected by wires to reduce the shaft voltage
  • the two end covers of the motor are connected to the earth to reduce the shaft voltage
  • the motor ball is replaced with ceramic material to prevent breakdown, but the cost is high;
  • embodiments of the present disclosure provide a DC brushless motor.
  • the embodiment of the present disclosure provides a DC brushless motor, which includes a motor insulating housing, a first motor end cover, a second motor end cover, and a motor insulating housing, the first motor end cover, and the first motor end cover.
  • the motor working component group in the space enclosed by the motor end cover characterized in that a first insulating cover is arranged on the periphery of the first motor end cover, and a second insulating cover is arranged on the periphery of the second motor end cover, wherein:
  • the first motor end cover and the second motor end cover are both conductive covers.
  • the motor insulation housing includes a central barrel and an end plate connected to a port of the central barrel, the end plate is provided with a first hole, and the first hole fixes the second motor end cover; The other port of the central cylinder fixes the first motor end cover.
  • the edge of the first insulating cover is fixedly connected to the edge of the central cylinder and covers the surface of the first motor end cover.
  • the motor working component group includes at least one output shaft, the second motor end cover is provided with a first shaft hole, and the output shaft extends out of the first shaft hole; the second insulating cover A second shaft hole is provided on the upper part, and the second insulating cover is fixed on the end plate via the output shaft and covers the surface of the second motor end cover.
  • the center of the surface of the first motor end cover is provided with a first convex portion outwards, and the center of the surface of the first insulating cover is provided with a first concave portion matching the first convex portion.
  • the second motor end cover protrudes from the surface of the end plate
  • the second insulating cover includes a fixed ring plate and a cap connected to the fixed ring plate
  • the fixed ring plate is fixed on the end plate.
  • the cap covers the surface of the second motor end cover.
  • the surface of the first motor end cover is provided with a first annular groove
  • the first insulating cover is provided with a second annular groove matching the first annular groove
  • An embodiment of the present disclosure provides an electrical device, the electrical device includes a motor, and the motor is the aforementioned DC brushless motor.
  • the electrical equipment includes an air conditioner, a refrigerator, a range hood, and an electric fan.
  • an insulating cover is added to the periphery of the two motor end covers to avoid direct or indirect contact of the motor with external conductive materials in an installation environment, and prevent electrical corrosion of the motor bearing.
  • Figure 1 is a structural diagram of an embodiment of the disclosed DC brushless motor
  • Figure 2 is a structural diagram of an embodiment of the disclosed DC brushless motor
  • Figure 3 is a structural diagram of an embodiment of the disclosed DC brushless motor.
  • Fig. 1 shows a DC brushless motor provided by an embodiment of the present disclosure, which includes a motor insulating housing 1, a first motor end cover 2, a second motor end cover 3, and is placed in the motor insulating housing 1,
  • the first motor end cover 2 and the second motor end cover 3 are a group of motor working components in the space enclosed by the motor.
  • the insulating housing is cylindrical, and the first motor end cover and the second motor end cover are respectively connected to two ends of the insulating housing.
  • the motor working component group is the components needed to realize the motor work together. Such as rotors, stators, bearings, printed circuit boards, coils, Hall sensors, output shafts, etc., are not given as examples.
  • the motor working component group is the internal components that the existing brushless DC motors usually have.
  • the brushless DC motor can prevent electrical corrosion of motor bearings.
  • the modified structure is: a first insulating cover 4 is provided on the periphery of the first motor end cover 2, and a second insulating cover 5 is provided on the periphery of the second motor end cover 3, wherein the first motor end cover 2 Both the second motor end cover 3 and the second motor end cover 3 are conductive covers.
  • the periphery of the end cap is the outer surface of the end cap.
  • the insulating housing can be round or square. If the insulating cover is fixedly connected to the insulating housing to wrap the motor end cover, the insulating cover and the insulating housing conform to the outer shape, which can be round, Square shape. If the insulating cover only needs to wrap the motor end cover to be fixedly connected to the motor end cover, the shape of the insulating cover and the motor end cover are consistent, and the size area of the insulating cover is larger than that of the motor end cover.
  • the motor end cover can also be round or square.
  • the insulating cover can also be round or square.
  • the motor can avoid direct or indirect contact with external conductive materials in the installation environment, thereby preventing electrical corrosion of motor bearings.
  • an insulating cover is added to the periphery of the two motor end covers to avoid direct or indirect contact of the motor with external conductive materials in an installation environment, and prevent electrical corrosion of the motor bearing.
  • Figure 2 shows a DC brushless motor provided by an embodiment of the present disclosure, including a motor insulation shell, a first motor end cover 2, a second motor end cover, and is placed in the motor insulation shell, the first A motor end cover 2 and a motor working component group in the space enclosed by the second motor end cover.
  • the insulating housing is cylindrical, and the first motor end cover and the second motor end cover are respectively connected to two ends of the insulating housing.
  • the motor working component group is the components needed to realize the motor work together. Such as rotors, stators, bearings, printed circuit boards, coils, Hall sensors, output shafts, etc., are not given as examples.
  • the motor working component group is the internal components that the existing brushless DC motors usually have.
  • the brushless DC motor can prevent electrical corrosion of motor bearings.
  • the modified structure is: a first insulating cover 4 is provided on the periphery of the first motor end cover 2, and a second insulating cover 5 is provided on the periphery of the second motor end cover, wherein the first motor end cover 2 and The second motor end covers are all conductive covers.
  • the periphery of the end cap is the outer surface of the end cap.
  • the insulating housing can be round or square. If the insulating cover is fixedly connected to the insulating housing to wrap the motor end cover, the insulating cover and the insulating housing conform to the outer shape, which can be round, Square shape. If the insulating cover only needs to wrap the motor end cover to be fixedly connected to the motor end cover, the shape of the insulating cover and the motor end cover are consistent, and the size area of the insulating cover is larger than that of the motor end cover.
  • the motor end cover can also be round or square.
  • the insulating cover can also be round or square.
  • the motor insulation housing includes a central cylinder 6 and an end plate 7 connected to a port of the central cylinder.
  • the end plate is provided with a first hole, and the first hole fixes the second motor end. Cover; the other port of the central cylinder is fixed to the first motor end cover 2.
  • the edge of the first insulating cover 4 is fixedly connected to the edge of the central cylinder 6 and covers the surface of the first motor end cover 2.
  • the motor working component group includes at least one output shaft 8, the second motor end cover is provided with a first shaft hole, the output shaft 8 extends out of the first shaft hole; the second insulating cover is provided There is a second shaft hole, and the second insulating cover 5 is fixed on the end plate 7 via the output shaft 8 and covers the surface of the second motor end cover.
  • the motor can avoid direct or indirect contact with external conductive materials in the installation environment, thereby preventing electrical corrosion of motor bearings.
  • an insulating cover is added to the periphery of the two motor end covers to avoid direct or indirect contact of the motor with external conductive materials in an installation environment, and prevent electrical corrosion of the motor bearing.
  • FIG. 3 shows a DC brushless motor provided by an embodiment of the present disclosure, including a motor insulation shell, a first motor end cover 2, a second motor end cover 3, and a motor insulation shell ,
  • the insulating housing is cylindrical, and the first motor end cover and the second motor end cover are respectively connected to two ends of the insulating housing.
  • the motor working component group is the components needed to realize the motor work together. Such as rotors, stators, bearings, printed circuit boards, coils, Hall sensors, output shafts, etc., are not given as examples.
  • the motor working component group is the internal components that the existing brushless DC motors usually have.
  • the brushless DC motor can prevent electrical corrosion of motor bearings.
  • the modified structure is: a first insulating cover 4 is provided on the periphery of the first motor end cover 2, and a second insulating cover 5 is provided on the periphery of the second motor end cover 3, wherein the first motor end cover 2 Both the second motor end cover 3 and the second motor end cover 3 are conductive covers.
  • the periphery of the end cap is the outer surface of the end cap.
  • the insulating housing can be round or square. If the insulating cover is fixedly connected to the insulating housing to wrap the motor end cover, the insulating cover and the insulating housing conform to the outer shape, which can be round, Square shape. If the insulating cover only needs to wrap the motor end cover to be fixedly connected to the motor end cover, the shape of the insulating cover and the motor end cover are consistent, and the size area of the insulating cover is larger than that of the motor end cover.
  • the motor end cover can also be round or square.
  • the insulating cover can also be round or square.
  • the motor insulation housing includes a central cylinder 6 and an end plate 7 connected to a port of the central cylinder.
  • the end plate is provided with a first hole, and the first hole fixes the second motor end.
  • the edge of the first insulating cover 4 is fixedly connected to the edge of the central cylinder 6 and covers the surface of the first motor end cover 2.
  • the motor working component group includes at least one output shaft 8, the second motor end cover is provided with a first shaft hole, the output shaft 8 extends out of the first shaft hole; the second insulating cover is provided There is a second shaft hole, the second insulating cover 5 is fixed on the end plate 7 via the output shaft 8 and covers the surface of the second motor end cover 3.
  • the center of the surface of the first motor end cover 2 is provided with a first convex portion 9 which can be used to fix the bearing base.
  • the center of the surface of the first insulating cover is provided with a first concave portion 10 that matches the first convex portion 9.
  • the second motor end cover 3 protrudes from the surface of the end plate.
  • the second insulating cover includes a fixed ring plate 11 and a cap 12 connected to the fixed ring plate.
  • the fixed ring plate 11 is fixed on the end plate 7, and the cap 12 covers the surface of the second motor end cover 3.
  • the surface of the first motor end cover 2 is provided with a first annular groove 13, and the first insulating cover 4 is provided with a second annular groove 14 matching the first annular groove 13.
  • the motor can avoid direct or indirect contact with external conductive materials in the installation environment, thereby preventing electrical corrosion of motor bearings.
  • an insulating cover is added to the periphery of the two motor end covers to avoid direct or indirect contact of the motor with external conductive materials in an installation environment, and prevent electrical corrosion of the motor bearing.
  • An embodiment of the present disclosure provides an electrical device, the electrical device includes a motor, and the motor is the DC brushless motor described in the foregoing embodiment.
  • the electrical equipment may be an air conditioner, a refrigerator, a range hood, or an electric fan. It can also be other electrical appliances that use motors.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

一种直流无刷电机，包括电机绝缘外壳（1）、第一电机端盖（2）、第二电机端盖（3），以及置于由所述电机绝缘外壳（1）、所述第一电机端盖（2）、所述第二电机端盖（3）所围空间内的电机工作部件组，在所述第一电机端盖（2）外围设置第一绝缘盖（4），在所述第二电机端盖（3）外围设置第二绝缘盖（5），其中，所述第一电机端盖（2）和所述第二电机端盖（3）均为能够导电的盖体。该直流无刷电机，通过在两个电极端盖外围增设绝缘盖，避免电机在安装环境下与外部导电物质直接或间接接触，防止电机轴承发生电腐蚀。

Description

直流无刷电机
相关申请的交叉引用
本申请要求于2019年6月28日提交的申请号为2019105735011，发明名称为“直流无刷电机”的中国专利申请的优先权，其通过引用方式全部并入本申请。
技术领域
本公开涉及电机设备技术领域，尤其涉及一种直流无刷电机。
背景技术
直流无刷电机通过脉宽调制(PWM)制方式实现驱动，电机在运行过程中由于转子在交变的磁场或磁路不对称等原因下，会产生轴电压。转子轴承内外圈之间通过滚珠连接，滚珠和承接部件通过油膜减少磨损和绝缘，内圈与轴承连接，外圈与端盖连接。但是在轴电压大于一定值时，油膜将被绝缘击穿，导致轴承滚珠或内外圈表面产生电腐蚀，从而引起噪音，使轴承寿命缩短；严重时导致电机无法正常运行。
目前主要通过以下几个技术方案改善电机电腐蚀的问题：
1、电机两个端盖通过导线连接，降低轴电压；
2、电机两个端盖与大地连接，降低轴电压；
3、电机滚珠换为陶瓷材质，杜绝击穿，但成本很高；
4、将电机的转子改为绝缘转子，降低轴电压。
以上措施，都是基于电机本身结构和组件进行改善，虽电机本身轴电压已达到降低，但在具体产品使用上还是存在电腐蚀的问题。
发明内容
针对现有技术存在的问题，本公开实施例提供一种直流无刷电机。
本公开实施例提供一种直流无刷电机，包括电机绝缘外壳、第一电机端盖、第二电机端盖，以及置于由所述电机绝缘外壳、所述第一电机端盖、所述第二电机端盖所围空间内的电机工作部件组，其特征在于，在所述第一电机端盖外围设置第一绝缘盖，在所述第二电机端盖外围设置第二绝缘 盖，其中，所述第一电机端盖和所述第二电机端盖均为能够导电的盖体。
可选地，所述电机绝缘外壳包括中心筒和与所述中心筒一端口连接的端板，所述端板设有第一孔，所述第一孔固定所述第二电机端盖；所述中心筒的另一端口固定所述第一电机端盖。
可选地，所述第一绝缘盖的缘边与所述中心筒的缘边固连，覆盖于所述第一电机端盖的表面。
可选地，所述电机工作部件组至少包括一输出轴，所述第二电机端盖上设有第一轴孔，所述输出轴伸出所述第一轴孔；所述第二绝缘盖上设有第二轴孔，所述第二绝缘盖经所述输出轴固定在所述端板上，覆盖于所述第二电机端盖的表面。
可选地，所述第一电机端盖表面中心向外设有第一凸部，所述第一绝缘盖表面中心设有与所述第一凸部相配适的第一凹部。
可选地，所述第二电机端盖凸出所述端板表面，所述第二绝缘盖包括固定环板和与所述固定环板连接的盖帽，所述固定环板固定在所述端板上，所述盖帽覆盖于所述第二电机端盖的表面。
可选地，所述第一电机端盖表面设有第一环形沟槽，所述第一绝缘盖上设有与所述第一环形沟槽相配适的第二环形沟槽。
本公开实施例提供一种电器设备，所述电器设备包括电机，所述电机为上述的直流无刷电机。
可选地，所述电器设备包括空调、冰箱、油烟机、电风扇。
本公开提供的直流无刷电机，通过在两个电机端盖外围增设绝缘盖，避免电机在安装环境下与外部导电物质直接或间接接触，防止电机轴承发生电腐蚀。
附图说明
为了更清楚地说明本公开实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本公开直流无刷电机实施例结构图；
图2为本公开直流无刷电机实施例结构图；
图3为本公开直流无刷电机实施例结构图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例中的附图，对本公开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公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
目前为了降低轴电压，都是基于电机本身结构和组件进行改善。但依据电机轴电压产生的机理可以得知，当电机安装在产品中，端盖与产品中的其他导电物件一旦存在接触，电机轴电压会增大，也会产生电腐蚀。为此，为了降低轴电压，本公开要从电机安装方式和周围环境对轴电压的影响去考虑设计电机。
图1示出了本公开一实施例提供的一种直流无刷电机，包括电机绝缘外壳1、第一电机端盖2、第二电机端盖3，以及置于由所述电机绝缘外壳1、所述第一电机端盖2、所述第二电机端盖3所围空间内的电机工作部件组。在本实施例中，所述绝缘外壳为筒状，所述第一电机端盖和所述第二电机端盖分别连接在所述绝缘外壳的两端。所述电机工作部件组为共同实现电机工作所需的零部件。如转子、定子、轴承、印刷电路板、线圈、霍尔传感器、输出轴等等，不作一一举例。总之，电机工作部件组为现有直流无刷电机通常具有的内部件。
在本实施例中，所述直流无刷电机能够防止电机轴承发生电腐蚀。其改变的结构在于：在所述第一电机端盖2外围设置第一绝缘盖4，在所述第二电机端盖3外围设置第二绝缘盖5，其中，所述第一电机端盖2和所述第二电机端盖3均为能够导电的盖体。在本实施例中，端盖的外围为端盖的外表面。
在本实施例中，所述绝缘外壳可为圆形状、方形状，若绝缘盖与绝缘外壳契合固定连接，以达到包裹电机端盖，则绝缘盖与绝缘外壳的外形相符，可为圆形状、方形状。若绝缘盖仅需完成包裹电机端盖，从而与电机端盖固定连接，则绝缘盖与电机端盖的外形相符，且绝缘盖的尺寸面积大于电机端盖的尺寸面积。如所述电机端盖也可为圆形状、方形状。绝缘盖 也可为圆形状、方形状。
由于第一绝缘盖4和第二绝缘盖5能够将对应的电机端盖包裹住，避免电机在安装环境下与外部导电物质直接或间接接触，因而起到防止电机轴承发生电腐蚀的作用。
本公开提供的直流无刷电机，通过在两个电机端盖外围增设绝缘盖，避免电机在安装环境下与外部导电物质直接或间接接触，防止电机轴承发生电腐蚀。
图2示出了本公开一实施例提供的一种直流无刷电机，包括电机绝缘外壳、第一电机端盖2、第二电机端盖，以及置于由所述电机绝缘外壳、所述第一电机端盖2、所述第二电机端盖所围空间内的电机工作部件组。在本实施例中，所述绝缘外壳为筒状，所述第一电机端盖和所述第二电机端盖分别连接在所述绝缘外壳的两端。所述电机工作部件组为共同实现电机工作所需的零部件。如转子、定子、轴承、印刷电路板、线圈、霍尔传感器、输出轴等等，不作一一举例。总之，电机工作部件组为现有直流无刷电机通常具有的内部件。
在本实施例中，所述直流无刷电机能够防止电机轴承发生电腐蚀。其改变的结构在于：在所述第一电机端盖2外围设置第一绝缘盖4，在所述第二电机端盖外围设置第二绝缘盖5，其中，所述第一电机端盖2和所述第二电机端盖均为能够导电的盖体。在本实施例中，端盖的外围为端盖的外表面。
在本实施例中，所述绝缘外壳可为圆形状、方形状，若绝缘盖与绝缘外壳契合固定连接，以达到包裹电机端盖，则绝缘盖与绝缘外壳的外形相符，可为圆形状、方形状。若绝缘盖仅需完成包裹电机端盖，从而与电机端盖固定连接，则绝缘盖与电机端盖的外形相符，且绝缘盖的尺寸面积大于电机端盖的尺寸面积。如所述电机端盖也可为圆形状、方形状。绝缘盖也可为圆形状、方形状。
进一步的解释说明，所述电机绝缘外壳包括中心筒6和与所述中心筒一端口连接的端板7，所述端板设有第一孔，所述第一孔固定所述第二电机端盖；所述中心筒的另一端口固定所述第一电机端盖2。
所述第一绝缘盖4的缘边与所述中心筒6的缘边固连，覆盖于所述第 一电机端盖2的表面。
所述电机工作部件组至少包括一输出轴8，所述第二电机端盖上设有第一轴孔，所述输出轴8伸出所述第一轴孔；所述第二绝缘盖上设有第二轴孔，所述第二绝缘盖5经所述输出轴8固定在所述端板7上，覆盖于所述第二电机端盖的表面。
由于第一绝缘盖4和第二绝缘盖5能够将对应的电机端盖包裹住，避免电机在安装环境下与外部导电物质直接或间接接触，因而起到防止电机轴承发生电腐蚀的作用。
本公开提供的直流无刷电机，通过在两个电机端盖外围增设绝缘盖，避免电机在安装环境下与外部导电物质直接或间接接触，防止电机轴承发生电腐蚀。
图3示出了示出了本公开一实施例提供的一种直流无刷电机，包括电机绝缘外壳、第一电机端盖2、第二电机端盖3，以及置于由所述电机绝缘外壳、所述第一电机端盖2、所述第二电机端盖3所围空间内的电机工作部件组。在本实施例中，所述绝缘外壳为筒状，所述第一电机端盖和所述第二电机端盖分别连接在所述绝缘外壳的两端。所述电机工作部件组为共同实现电机工作所需的零部件。如转子、定子、轴承、印刷电路板、线圈、霍尔传感器、输出轴等等，不作一一举例。总之，电机工作部件组为现有直流无刷电机通常具有的内部件。
在本实施例中，所述直流无刷电机能够防止电机轴承发生电腐蚀。其改变的结构在于：在所述第一电机端盖2外围设置第一绝缘盖4，在所述第二电机端盖3外围设置第二绝缘盖5，其中，所述第一电机端盖2和所述第二电机端盖3均为能够导电的盖体。在本实施例中，端盖的外围为端盖的外表面。
在本实施例中，所述绝缘外壳可为圆形状、方形状，若绝缘盖与绝缘外壳契合固定连接，以达到包裹电机端盖，则绝缘盖与绝缘外壳的外形相符，可为圆形状、方形状。若绝缘盖仅需完成包裹电机端盖，从而与电机端盖固定连接，则绝缘盖与电机端盖的外形相符，且绝缘盖的尺寸面积大于电机端盖的尺寸面积。如所述电机端盖也可为圆形状、方形状。绝缘盖也可为圆形状、方形状。
进一步的解释说明，所述电机绝缘外壳包括中心筒6和与所述中心筒一端口连接的端板7，所述端板设有第一孔，所述第一孔固定所述第二电机端盖3；所述中心筒的另一端口固定所述第一电机端盖2。
所述第一绝缘盖4的缘边与所述中心筒6的缘边固连，覆盖于所述第一电机端盖2的表面。
所述电机工作部件组至少包括一输出轴8，所述第二电机端盖上设有第一轴孔，所述输出轴8伸出所述第一轴孔；所述第二绝缘盖上设有第二轴孔，所述第二绝缘盖5经所述输出轴8固定在所述端板7上，覆盖于所述第二电机端盖3的表面。
所述第一电机端盖2表面中心向外设有第一凸部9，该第一凸部可用于固定轴承底座。为此，为了覆盖第一电机端盖2，所述第一绝缘盖表面中心设有与所述第一凸部9相配适的第一凹部10。
所述第二电机端盖3凸出所述端板表面，为此，为了覆盖第二电机端盖3，所述第二绝缘盖包括固定环板11和与所述固定环板连接的盖帽12，所述固定环板11固定在所述端板7上，所述盖帽12覆盖于所述第二电机端盖3的表面。
所述第一电机端盖2表面设有第一环形沟槽13，所述第一绝缘盖4上设有与所述第一环形沟槽13相配适的第二环形沟槽14。
由于第一绝缘盖4和第二绝缘盖5能够将对应的电机端盖包裹住，避免电机在安装环境下与外部导电物质直接或间接接触，因而起到防止电机轴承发生电腐蚀的作用。
本公开提供的直流无刷电机，通过在两个电机端盖外围增设绝缘盖，避免电机在安装环境下与外部导电物质直接或间接接触，防止电机轴承发生电腐蚀。
本公开一实施例提供一种电器设备，所述电器设备包括电机，所述电机为上述实施例所述的直流无刷电机。
在本实施例中，电器设备可为空调、冰箱、油烟机、电风扇。还可为其他使用电机的电器，在此不一一举出。
最后应说明的是：以上实施例仅用以说明本公开的技术方案，而非对其限制；尽管参照前述实施例对本公开进行了详细的说明，本领域的普通 技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本公开各实施例技术方案的精神和范围。

Claims (9)

  1. 一种直流无刷电机，包括电机绝缘外壳、第一电机端盖、第二电机端盖，以及置于由所述电机绝缘外壳、所述第一电机端盖、所述第二电机端盖所围空间内的电机工作部件组，
    其特征在于，
    在所述第一电机端盖外围设置第一绝缘盖，在所述第二电机端盖外围设置第二绝缘盖，
    其中，所述第一电机端盖和所述第二电机端盖均为能够导电的盖体。
  2. 根据权利要求1所述的直流无刷电机，其特征在于，
    所述电机绝缘外壳包括中心筒和与所述中心筒一端口连接的端板，
    所述端板设有第一孔，所述第一孔固定所述第二电机端盖；
    所述中心筒的另一端口固定所述第一电机端盖。
  3. 根据权利要求2所述的直流无刷电机，其特征在于，
    所述第一绝缘盖的缘边与所述中心筒的缘边固连，覆盖于所述第一电机端盖的表面。
  4. 根据权利要求2所述的直流无刷电机，其特征在于，
    所述电机工作部件组至少包括一输出轴，
    所述第二电机端盖上设有第一轴孔，所述输出轴伸出所述第一轴孔；
    所述第二绝缘盖上设有第二轴孔，所述第二绝缘盖经所述输出轴固定在所述端板上，覆盖于所述第二电机端盖的表面。
  5. 根据权利要求3所述的直流无刷电机，其特征在于，
    所述第一电机端盖表面中心向外设有第一凸部，
    所述第一绝缘盖表面中心设有与所述第一凸部相配适的第一凹部。
  6. 根据权利要求4所述的直流无刷电机，其特征在于，
    所述第二电机端盖凸出所述端板表面，所述第二绝缘盖包括固定环板和与所述固定环板连接的盖帽，所述固定环板固定在所述端板上，所述盖帽覆盖于所述第二电机端盖的表面。
  7. 根据权利要求5所述的直流无刷电机，其特征在于，
    所述第一电机端盖表面设有第一环形沟槽，
    所述第一绝缘盖上设有与所述第一环形沟槽相配适的第二环形沟槽。
  8. 一种电器设备，所述电器设备包括电机，其特征在于，
    所述电机为上述权利要求1-7中任一权利要求所述的直流无刷电机。
  9. 根据权利要求8所述的电器设备，其特征在于，
    所述电器设备包括空调、冰箱、油烟机、电风扇。
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