WO2020118912A1 - 一种防着火阻燃塑封电机 - Google Patents

一种防着火阻燃塑封电机 Download PDF

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Publication number
WO2020118912A1
WO2020118912A1 PCT/CN2019/076282 CN2019076282W WO2020118912A1 WO 2020118912 A1 WO2020118912 A1 WO 2020118912A1 CN 2019076282 W CN2019076282 W CN 2019076282W WO 2020118912 A1 WO2020118912 A1 WO 2020118912A1
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Prior art keywords
retardant
fire
flame
stator core
coil
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PCT/CN2019/076282
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English (en)
French (fr)
Inventor
陈金强
张淼
林海奇
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中山大洋电机股份有限公司
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Publication of WO2020118912A1 publication Critical patent/WO2020118912A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/02—Casings or enclosures characterised by the material 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

Definitions

  • the utility model relates to a fire-retardant flame-retardant plastic-sealed motor.
  • the existing plastic encapsulated motor includes a rotating shaft, a rotor assembly, a plastic encapsulated stator assembly, a front bearing support frame and a rear bearing support frame.
  • the plastic encapsulated stator assembly includes a stator core, a coil winding, an end insulation and an injection molded case.
  • the rotating shaft is mounted on the rotor assembly On the top, a first cavity is provided in the middle of the plastic-encapsulated stator assembly, and a first through hole is provided on the top of the first cavity, the first through hole is in communication with the first cavity, and the rotor assembly is installed on the first In the cavity, the front bearing support frame and the rear bearing support frame are respectively provided with bearing chambers, bearings are placed in the bearing chambers, the rotating shaft is supported on the bearings, and the injection molded housing insulates the stator core, coil windings and ends
  • the injection molding is integrated. When the coil winding inside the motor is short-circuited and caught fire, because the injection-molded casing contains resin components, the injection-molded casing cannot prevent the internal fire of the motor, and the fire protection effect is poor. It may ignite the external load after the fire.
  • the purpose of the utility model is to provide a fire-retardant and flame-retardant plastic-sealed motor, which solves the technical problem that the injection-molded casing in the prior art cannot prevent the internal fire of the motor, the fireproof effect is poor, and the external load may be ignited after the fire.
  • a fire-retardant and flame-retardant plastic-encapsulated motor includes a rotating shaft, a rotor assembly, a plastic-encapsulated stator assembly, a front bearing support frame, and a rear bearing support frame.
  • the plastic-encapsulated stator assembly includes a stator core, coil windings, end insulation, and an injection molded case. The stator The end face of the iron core is installed with end insulation, and then the coil winding is wound.
  • the coil winding protrudes the exposed portions of the coil on both end surfaces of the stator iron core, the rotating shaft is installed on the rotor assembly, and the first cavity is provided in the middle of the plastic packaged stator assembly ,
  • the rotor assembly is installed in the first cavity, the front bearing support frame and the rear bearing support frame are respectively provided with a bearing room, a bearing is placed in the bearing room, and the rotating shaft is supported on the bearing.
  • the fire shield covers the exposed part of the coil, and then the stator core, the coil winding, the inner fire shield and the end insulation are injection-molded into one body through the injection molding shell.
  • the inner fireproof cover includes two, and the two inner fireproof covers are respectively sleeved on the exposed portions of the coil at both ends of the coil winding.
  • the inner fire shield includes a first arc segment, and a first extension segment and a second extension segment are connected to both sides of the first arc segment, the top of the first extension segment and the first arc segment
  • the outer portion is connected, and the top of the second extension section is connected to the inner portion of the first arc section, the first arc section forms a first cavity, and the exposed coil portion is located inside the first cavity.
  • a gap is formed between the bottom of the first extension and the end surface of the stator core.
  • a plurality of first positioning claws are provided at the bottom of the first extension section, the first positioning claws are clamped on both ends of the outer circular surface of the stator iron core, and the first positioning claws and the outer circle of the stator iron core The surface fits closely.
  • the inner fireproof cover is made of metal or refractory material.
  • a lead notch is provided on the inner fire shield.
  • an outer fireproof cover which includes a first fireproof cover and a second fireproof cover, the first fireproof cover and the second fireproof cover are respectively sleeved on the two ends of the injection molded casing.
  • the outer fireproof cover is made of metal or refractory material.
  • the utility model includes a rotating shaft, a rotor assembly, a plastic packaged stator assembly, a front bearing support frame and a rear bearing support frame.
  • the plastic packaged stator assembly includes a stator core, a coil winding, an end insulation and an injection molded housing, and an end surface of the stator core The upper mounting end is insulated and the coil winding is wound.
  • the coil winding protrudes the exposed portions of the coil on both ends of the stator core, the rotating shaft is installed on the rotor assembly, the first cavity is provided in the middle of the plastic packaged stator assembly, and the rotor assembly is installed In the first cavity, the front bearing support frame and the rear bearing support frame are respectively provided with bearing chambers, bearings are placed in the bearing chambers, and the rotating shaft is supported on the bearings. It also includes an inner fire shield, which is covered by the inner fire shield The exposed part of the coil, the stator core, the coil winding, the inner fire shield and the end insulation are injection molded into one through the injection molding shell, which can effectively prevent the motor from running abnormally and causing the coil winding to catch fire and possibly ignite the motor and external load. Good flame retardant effect;
  • the inner fire shield includes two, and the two inner fire shields are respectively sleeved on the exposed portions of the coil at both ends of the coil winding.
  • the inner fire shield includes a first arc segment, and two sides of the first arc segment are respectively connected There are a first extension section and a second extension section, the top of the first extension section is connected to the outer portion of the first arc section, the top of the second extension section is connected to the inner portion of the first arc section, so
  • the first circular arc segment forms a first cavity, and the exposed part of the coil is located inside the first cavity, which effectively prevents the internal fire of the motor from igniting and ignites the external of the motor, and has good fire and flame retardant effects;
  • a gap is formed between the bottom of the first extension and the end surface of the stator core.
  • a plurality of first positioning claws are provided at the bottom of the first extension section, the first positioning claws are clamped on both ends of the outer circular surface of the stator core, and the first positioning claws and the stator core The outer surface is tightly matched, which can effectively fix the first cover and the second cover to prevent the first cover and the second cover from loosening;
  • It also includes an outer fireproof cover, which includes a first fireproof cover and a second fireproof cover, the first fireproof cover and the second fireproof cover are respectively fitted on both ends of the injection molded casing, which can effectively prevent the motor from catching fire When the load is ignited, the fire and flame retardant effect is good.
  • the outer fire shield is made of metal or refractory material and the inner fire shield is made of metal or refractory material. It is easy to obtain materials, simple to manufacture and easy to implement.
  • Figure 1 is a perspective view of the utility model
  • FIG. 2 is a schematic structural view of the stator assembly of the present invention before injection molding
  • FIG. 3 is an exploded view of the structure of the stator assembly of the present invention before injection
  • FIG. 4 is an exploded view of the structure of the stator assembly of the present invention at another angle before injection molding;
  • Figure 5 is a front view of the utility model
  • FIG. 6 is a cross-sectional view of A-A in FIG. 5;
  • FIG. 7 is a partial enlarged view of B in FIG. 6;
  • FIG. 8 is a partial enlarged view of C in FIG. 6;
  • FIG. 9 is a schematic structural view of the utility model.
  • this embodiment is a flame-retardant flame-retardant plastic-encapsulated motor, including a rotating shaft 1, a rotor assembly 2, a plastic-encapsulated stator assembly 3, a front bearing support frame 4 and a rear bearing support frame 5, the plastic package
  • the stator assembly 3 includes a stator core 31, a coil winding 32, an end insulation 33, and an injection molded case 34.
  • the coil winding 32 is wound, and the coil winding 32 is wound on the stator core 31
  • the exposed coil portions 321 protrude from both ends of the shaft, the rotating shaft 1 is mounted on the rotor assembly 2, a first cavity 35 is provided in the middle of the plastic-molded stator assembly 3, the rotor assembly 2 is installed in the first cavity 35, and the front bearing
  • the support frame 4 and the rear bearing support frame 5 are respectively provided with bearing chambers 41 and 51, and bearing 6 is placed in the bearing chambers 41 and 51, and the rotating shaft 1 is supported on the bearing 6, which further includes an inner fire shield 7 and an inner fire shield 7
  • the exposed part 321 of the coil is covered, and then the stator core 31, the coil winding 32, the inner fire shield 7 and the end insulation 33 are injection-molded into one body through the injection-molded housing 34.
  • the inner fire shield 7 includes two, and the two inner fire shields 7 are respectively sleeved on the coil exposed portions 321 at both ends of the coil winding 32.
  • the inner fire shield 7 includes a first arc segment 71, and a first extension segment 72 and a second extension segment 73 are connected to both sides of the first arc segment 71, the top of the first extension segment 72 and The outer part of the first arc segment 71 is connected, and the top of the second extension segment 73 is connected to the inner part of the first arc segment 71, the first arc segment 71 forms a first cavity 711, and the coil is exposed 321 is located in the first cavity 711.
  • a gap 30 is formed between the bottom of the first extension 72 and the end surface of the stator core 31.
  • a plurality of first positioning claws 721 are provided at the bottom of the first extending section 72.
  • the first positioning claws 721 are locked on both ends of the outer circumferential surface of the stator core 31.
  • the first positioning claws 721 and the stator The outer circumferential surface of the iron core 31 fits tightly.
  • the inner fireproof cover 7 is made of metal or refractory material.
  • the inner fireproof cover 7 is provided with a lead gap.
  • an outer fire shield 8 which includes a first fire shield 81 and a second fire shield 82.
  • the first fire shield 81 and the second fire shield 82 are sleeved on both ends of the injection molded casing 34.
  • the outer fireproof cover 8 is made of metal or refractory material.
  • an outer fireproof cover 8 which includes a first fireproof cover 81 and a second fireproof cover 82, and the first fireproof cover 81 and the second fireproof cover 82 are respectively sleeved on the injection molded case 34 at both ends.
  • the outer fireproof cover 8 is made of metal or refractory material.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

一种防着火阻燃塑封电机，包括转轴（1）、转子组件（2）、塑封定子组件（3）、前轴承支撑架（4）和后轴承支撑架（5），所述塑封定子组件（3）包括定子铁芯（31）、线圈绕组（32）、端部绝缘（33）和注塑外壳（34），定子铁芯（31）的端面上安装端部绝缘（33）后卷绕线圈绕组（32），绕线圈绕组（32）在定子铁芯（31）的两端面上凸出有线圈外露部（321），转轴（1）安装在转子组件（2）上，塑封定子组件（3）中间设有第一空腔（35），转子组件（2）安装在第一空腔（35）里，前轴承支撑架（4）和后轴承支撑架（5）上分别设置有轴承室（41、51），轴承室（41、51）里放置有轴承（6），转轴（1）支承在轴承（6）上，它还包括内防火罩（7），内防火罩（7）罩住线圈外露部（321），再通过注塑外壳（34）将定子铁芯（31）、线圈绕组（32）、内防火罩（7）和端部绝缘（33）注塑成一体。

Description

一种防着火阻燃塑封电机 技术领域：
本实用新型涉及一种防着火阻燃塑封电机。
背景技术：
现有的塑封电机包括转轴、转子组件、塑封定子组件、前轴承支撑架和后轴承支撑架，所述塑封定子组件包括定子铁芯、线圈绕组、端部绝缘和注塑外壳，转轴安装在转子组件上，塑封定子组件中间设有第一空腔，所述第一空腔的顶部上设有第一通孔，所述第一通孔与第一空腔是连通的，转子组件安装在第一空腔里，所述前轴承支撑架和后轴承支撑架上分别设置有轴承室，轴承室里放置有轴承，转轴支承在轴承上，所述注塑外壳将定子铁芯、线圈绕组和端部绝缘注塑成一体，当电机内部的线圈绕组发生短路起火时，由于注塑外壳含有树脂成分，注塑外壳不能防止电机内部起火，防火效果差，起火后有可能引燃外部负载。
发明内容：
本实用新型的目的是提供一种防着火阻燃塑封电机，解决现有技术中注塑外壳不能防止电机内部起火，防火效果差，起火后有可能引燃外部负载的技术问题。
本实用新型的目的是通过下述技术方案予以实现的。
一种防着火阻燃塑封电机，包括转轴、转子组件、塑封定子组件、前轴承支撑架和后轴承支撑架，所述塑封定子组件包括定子铁芯、线圈绕组、端部绝缘和注塑外壳，定子铁芯的端面上安装端部绝缘后卷绕线圈绕组，绕线圈绕组在定子铁芯的两端面上凸出有线圈外露部，转轴安装在转子组件上，塑封定子组件中间设有第一空腔，转子组件安装在第一空腔里，所述前轴承支撑架和后轴承支撑架上分别设置有轴承室，轴承室里放置有轴承，转轴支承在轴承上，它还包括内防火罩，内防火罩罩住线圈外露部，再通过注塑外壳将定子铁芯、线圈绕组、内防火罩和端部绝缘注塑成一体。
所述内防火罩包括有2个，2个内防火罩分别套装在线圈绕组两端的线圈外露部。
所述内防火罩包括第一圆弧段，所述第一圆弧段的两侧分别连接有第一延伸段和第二延伸段，所述第一延伸段的顶部与第一圆弧段的外侧部连接，所述第二延伸段的顶部与第一圆弧段的内侧部连接，所述第一圆弧段形成第一空腔，线圈外露部位于第一空腔里面。
所述第一延伸段的底部与定子铁芯的端面之间形成缝隙。
所述第一延伸段的底部设有若干个第一定位卡爪，所述第一定位卡爪卡在定子铁芯的外圆表面两端上，第一定位卡爪与定子铁芯的外圆表面紧密配合。
所述内防火罩由金属或耐火材料制造而成。
所述内防火罩上设有引线缺口。
它还包括一外防火罩，所述外防火罩包括第一防火罩和第二防火罩，第一防火罩和第二防火罩分别套装在注塑外壳的两端。
所述外防火罩是由金属或耐火材料制造而成。
本实用新型与现有技术相比，具有如下效果：
1)本实用新型包括转轴、转子组件、塑封定子组件、前轴承支撑架和后轴承支撑架，所述塑封定子组件包括定子铁芯、线圈绕组、端部绝缘和注塑外壳，定子铁芯的端面上安装端部绝缘后卷绕线圈绕组，绕线圈绕组在定子铁芯的两端面上凸出有线圈外露部，转轴安装在转子组件上，塑封定子组件中间设有第一空腔，转子组件安装在第一空腔里，所述前轴承支撑架和后轴承支撑架上分别设置有轴承室，轴承室里放置有轴承，转轴支承在轴承上，它还包括内防火罩，内防火罩罩住线圈外露部，再通过注塑外壳将定子铁芯、线圈绕组、内防火罩和端部绝缘注塑成一体，可以有效防止电机运行时发生异常导致线圈绕组发生起火后可能引燃电机和外部负载，防火阻燃效果好；
2)所述内防火罩包括有2个，2个内防火罩分别套装在线圈绕组两端的线圈外露部，内防火罩包括第一圆弧段，所述第一圆弧段的两侧分别连接有第一 延伸段和第二延伸段，所述第一延伸段的顶部与第一圆弧段的外侧部连接，所述第二延伸段的顶部与第一圆弧段的内侧部连接，所述第一圆弧段形成第一空腔，线圈外露部位于第一空腔里面，有效防止电机内部起火引燃电机外部，防火阻燃效果好；
3)所述第一延伸段的底部与定子铁芯的端面之间形成缝隙，当注塑过程中，注塑料可以通过缝隙流入到线圈绕组内，从而避免出现注塑不饱满的现象；
4)所述第一延伸段的底部设有若干个第一定位卡爪，所述第一定位卡爪卡在定子铁芯的外圆表面两端上，第一定位卡爪与定子铁芯的外圆表面紧密配合，可以有效固定第一罩体和第二罩体，防止第一罩体和第二罩体松动；
5)它还包括一外防火罩，所述外防火罩包括第一防火罩和第二防火罩，第一防火罩和第二防火罩分别套装在注塑外壳的两端，可以有效果防止电机起火时引燃负载，防火阻燃效果好。
6)外防火罩是由金属或耐火材料制造而成和内防火罩由金属或耐火材料制造而成，取材容易，制造简便，容易实施。
附图说明：
图1是本实用新型的立体图；
图2是本实用新型的定子组件未注塑前的结构示意图；
图3是本实用新型的定子组件未注塑前的结构分解图；
图4是本实用新型的定子组件未注塑前的另一角度的结构分解图；
图5是本实用新型的正视图；
图6是图5中A-A的剖视图；
图7是图6中B的局部放大图；
图8是图6中C的局部放大图；
图9是本实用新型的结构示意图。
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至图8所示，本实施例是一种防着火阻燃塑封电机，包括转轴1、转子组件2、塑封定子组件3、前轴承支撑架4和后轴承支撑架5，所述塑封定子组件3包括定子铁芯31、线圈绕组32、端部绝缘33和注塑外壳34，定子铁芯31的端面上安装端部绝缘33后卷绕线圈绕组32，绕线圈绕组32在定子铁芯31的两端面上凸出有线圈外露部321，转轴1安装在转子组件2上，塑封定子组件3中间设有第一空腔35，转子组件2安装在第一空腔35里，所述前轴承支撑架4和后轴承支撑架5上分别设置有轴承室41、51，轴承室41、51里放置有轴承6，转轴1支承在轴承6上，它还包括内防火罩7，内防火罩7罩住线圈外露部321，再通过注塑外壳34将定子铁芯31、线圈绕组32、内防火罩7和端部绝缘33注塑成一体。
所述内防火罩7包括有2个，2个内防火罩7分别套装在线圈绕组32两端的线圈外露部321。
所述内防火罩7包括第一圆弧段71，所述第一圆弧段71的两侧分别连接有第一延伸段72和第二延伸段73，所述第一延伸段72的顶部与第一圆弧段71的外侧部连接，所述第二延伸段73的顶部与第一圆弧段71的内侧部连接，所述第一圆弧段71形成第一空腔711，线圈外露部321位于第一空腔711里面。
所述第一延伸段72的底部与定子铁芯31的端面之间形成缝隙30。
所述第一延伸段72的底部设有若干个第一定位卡爪721，所述第一定位卡爪721卡在定子铁芯31的外圆表面两端上，第一定位卡爪721与定子铁芯31的外圆表面紧密配合。
所述内防火罩7由金属或耐火材料制造而成。
所述内防火罩7上设有引线缺口。
它还包括一外防火罩8，所述外防火罩8包括第一防火罩81和第二防火罩82，第一防火罩81和第二防火罩82分别套装在注塑外壳34的两端。
所述外防火罩8是由金属或耐火材料制造而成。
如图9所示，它还包括一外防火罩8，所述外防火罩8包括第一防火罩81和第二防火罩82，第一防火罩81和第二防火罩82分别套装在注塑外壳34的两端。
所述外防火罩8是由金属或耐火材料制造而成。
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 (9)

  1. 一种防着火阻燃塑封电机，包括转轴(1)、转子组件(2)、塑封定子组件(3)、前轴承支撑架(4)和后轴承支撑架(5)，所述塑封定子组件(3)包括定子铁芯(31)、线圈绕组(32)、端部绝缘(33)和注塑外壳(34)，定子铁芯(31)的端面上安装端部绝缘(33)后卷绕线圈绕组(32)，绕线圈绕组(32)在定子铁芯(31)的两端面上凸出有线圈外露部(321)，转轴(1)安装在转子组件(2)上，塑封定子组件(3)中间设有第一空腔(35)，转子组件(2)安装在第一空腔(35)里，所述前轴承支撑架(4)和后轴承支撑架(5)上分别设置有轴承室(41、51)，轴承室(41、51)里放置有轴承(6)，转轴(1)支承在轴承(6)上，其特征在于：它还包括内防火罩(7)，内防火罩(7)罩住线圈外露部(321)，再通过注塑外壳(34)将定子铁芯(31)、线圈绕组(32)、内防火罩(7)和端部绝缘(33)注塑成一体。
  2. 根据权利要求1所述的一种防着火阻燃塑封电机，其特征在于：所述内防火罩(7)包括有2个，2个内防火罩(7)分别套装在线圈绕组(32)两端的线圈外露部(321)。
  3. 根据权利要求1或2所述的一种防着火阻燃塑封电机，其特征在于：所述内防火罩(7)包括第一圆弧段(71)，所述第一圆弧段(71)的两侧分别连接有第一延伸段(72)和第二延伸段(73)，所述第一延伸段(72)的顶部与第一圆弧段(71)的外侧部连接，所述第二延伸段(73)的顶部与第一圆弧段(71)的内侧部连接，所述第一圆弧段(71)形成第一空腔(711)，线圈外露部(321)位于第一空腔(711)里面。
  4. 根据权利要求3所述的一种防着火阻燃塑封电机，其特征在于：所述第一延伸段(72)的底部与定子铁芯(31)的端面之间形成缝隙(30)。
  5. 根据权利要求4所述的一种防着火阻燃塑封电机，其特征在于：所述第一延伸段(72)的底部设有若干个第一定位卡爪(721)，所述第一定位卡爪(721)卡在定子铁芯(31)的外圆表面两端上，第一定位卡爪(721)与定子铁芯(31) 的外圆表面紧密配合。
  6. 根据权利要求5所述的一种防着火阻燃塑封电机，其特征在于：所述内防火罩(7)由金属或耐火材料制造而成。
  7. 根据权利要求6所述的一种防着火阻燃塑封电机，其特征在于：所述内防火罩(7)上设有引线缺口。
  8. 根据权利要求1所述的一种防着火阻燃塑封电机，其特征在于：它还包括一外防火罩(8)，所述外防火罩(8)包括第一防火罩(81)和第二防火罩(82)，第一防火罩(81)和第二防火罩(82)分别套装在注塑外壳(34)的两端。
  9. 根据权利要求8所述的一种防着火阻燃塑封电机，其特征在于：所述外防火罩(8)是由金属或耐火材料制造而成。
PCT/CN2019/076282 2018-12-14 2019-02-27 一种防着火阻燃塑封电机 WO2020118912A1 (zh)

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CN206481147U (zh) * 2017-02-16 2017-09-08 中山大洋电机股份有限公司 一种塑封电机
CN206481138U (zh) * 2017-01-22 2017-09-08 中山大洋电机股份有限公司 一种电机绝缘结构
CN207117360U (zh) * 2017-08-29 2018-03-16 广东威灵电机制造有限公司 电机
CN208078760U (zh) * 2018-03-20 2018-11-09 中山大洋电机股份有限公司 一种电机定子装配组件及其应用的外转子电机

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CN206481147U (zh) * 2017-02-16 2017-09-08 中山大洋电机股份有限公司 一种塑封电机
CN207117360U (zh) * 2017-08-29 2018-03-16 广东威灵电机制造有限公司 电机
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