WO2021036038A1 - 一种电机 - Google Patents

一种电机 Download PDF

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Publication number
WO2021036038A1
WO2021036038A1 PCT/CN2019/120422 CN2019120422W WO2021036038A1 WO 2021036038 A1 WO2021036038 A1 WO 2021036038A1 CN 2019120422 W CN2019120422 W CN 2019120422W WO 2021036038 A1 WO2021036038 A1 WO 2021036038A1
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WIPO (PCT)
Prior art keywords
motor
impeller
wind
casing
fixed
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PCT/CN2019/120422
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English (en)
French (fr)
Inventor
高春超
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追创科技(苏州)有限公司
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Priority claimed from CN201910817734.1A external-priority patent/CN110529431B/zh
Application filed by 追创科技(苏州)有限公司 filed Critical 追创科技(苏州)有限公司
Publication of WO2021036038A1 publication Critical patent/WO2021036038A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
    • 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
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Definitions

  • the invention relates to the technical field of motors. More specifically, the present invention relates to a motor.
  • the fixed impellers of the high-speed brushless motors used in the existing vacuum cleaners are all plastic parts, which are mass-produced by injection molding, and the transfer relationship between the fixed impeller and the air hood or the casing is a clearance fit or an interference fit.
  • the transfer relationship is a clearance fit
  • the gap between the fixed impeller and the wind hood or the casing will easily cause the problem of airflow backflow surge in the state of the small air inlet of the motor.
  • the transfer relationship is an interference fit, it will increase It is difficult to assemble, and interference extrusion can easily lead to blade deformation or blade damage. In view of this, it is necessary to develop a motor and a motor to solve the above problems.
  • the purpose of the present invention is to provide a motor that ensures that the fixed impeller and the wind hood or the casing are in an interference assembly state, while the fixed impeller is relatively easy to assemble, and is not easy to jam or jam. Rupture, good sealing effect, solving the surge problem in the traditional clearance fit, and also solving the assembly problem in the interference fit.
  • a motor including: the motor includes a fixed impeller for guiding airflow, and the fixed impeller includes:
  • At least two blades arranged spirally on the outer circumference of the impeller disk, and an air guide channel is limited between two adjacent blades;
  • the inner end of the blade is fixedly connected with the outer circumference of the impeller disk, and the outer end of the blade is formed with a sealing part, which is in interference fit with the casing/wind cover of the motor.
  • the material of the sealing part is soft rubber.
  • it further comprises: a fixed motor mounting frame, the fixed impeller is mounted on the motor mounting frame, and the motor mounting frame and the fixed impeller together form a wind guide structure;
  • the motor mounting frame includes: a mounting plate with a circular cross-section, and supporting ribs arranged radially on the periphery of the mounting plate. At least two supporting ribs are provided. Two adjacent supporting ribs are arranged at intervals to define two The air guide between the supporting ribs.
  • the air guide opening corresponds to the air outlet end of the air guide channel one to one.
  • the motor further includes: a casing, which is hollow inside; a driving part, which is installed on the wind guide structure; and a wind hood that is clamped to one end of the casing.
  • the motor mounting frame is fixed to the inside of the casing, and the inner end of the supporting rib is fixedly connected to the outer circumference of the mounting plate, and the outer end of the supporting rib is fixedly connected to the inner circumference of the casing,
  • the outer end of the sealing part is attached to the inner circumference of the casing and maintains elastic contact.
  • the wind collecting hood includes: a wind collecting part that gradually curves downward with the expansion of the radius, and a skirt part, which is integrated with the wind collecting part on the outer circumference of the wind collecting part and is separated from the wind collecting part.
  • the outer circumference extends vertically downward
  • the inner periphery of the skirt part fits and maintains elastic contact with the outer end of the sealing part, and an air inlet is provided in the center area of the top end of the wind gathering part.
  • the inner diameter of the casing and the wind hood is smaller than the outer diameter of the fixed impeller.
  • the present invention includes at least the following beneficial effects:
  • the present invention provides a motor, which ensures that the fixed impeller and the wind hood or the casing are in an interference assembly state, while the fixed impeller is relatively easy to assemble, not easy to jam or break, and has a good sealing effect.
  • Fig. 1 is a schematic structural diagram of a motor according to an embodiment of the present invention
  • Figure 2 is an exploded view of a motor according to an embodiment of the present invention.
  • Figure 3 is a cross-sectional view of a motor in an embodiment of the present invention.
  • Figure 4 is a schematic structural diagram of a fixed impeller in an embodiment of the present invention.
  • Figure 5 is a schematic view of the structure of the fixed impeller in an embodiment of the present invention from another perspective
  • Figure 6 is a schematic diagram of the structure of the housing and the motor mounting frame in an embodiment of the present invention
  • Fig. 7 is a cross-sectional view of the wind hood in an embodiment of the present invention.
  • connection corresponds to the size from top to bottom
  • width corresponds to the size from left to right
  • depth corresponds to the size from front to back.
  • the present invention provides a motor, which includes a fixed impeller 13 for guiding airflow, and the fixed impeller 13 includes:
  • Impeller disk 131
  • the inner end of the blade 132 is fixedly connected to the outer circumference of the impeller disk 131, and the outer end of the blade 132 is formed with a sealing portion 133, which is an interference fit with the housing/wind cover of the motor.
  • the material of the sealing part 133 is soft rubber to ensure that the fixed impeller is easier to assemble, not easy to jam or break, and the sealing effect is good.
  • the fixed impeller 13 adopts the first injection molding impeller disc 131 and the blade 132, and the sealing part is molded by the second injection. 133.
  • the motor mounting frame 14 includes: a mounting plate 141 with a circular cross-section, and a supporting rib 142 arranged radially on the outer periphery of the mounting plate 141, at least two supporting ribs 142 are provided, and two adjacent supporting ribs 142 are arranged at intervals In order to define the air guide opening between the two supporting ribs 142.
  • the air guide opening corresponds to the air outlet end of the air guide channel one by one. The incoming air is guided into the air guide through the air guide channel of the fixed impeller 13, and is smoothly and evenly released into the motor through the air guide, so that the motor runs more stable.
  • a positioning portion 1411 protrudes from the top of the mounting disk 141, a first positioning hole 1412 is formed on the top surface of the mounting disk 141, a second positioning hole 1311 is formed on the inner circumference of the impeller disk 131, and the bottom of the impeller disk 131 A positioning post 1312 is provided at the end.
  • the impeller disk 131 is positioned on the top of the mounting disk 141 through the first positioning hole 1412 and the positioning column 1312 and the positioning portion 1411 and the second positioning hole 1311, and the impeller disk 131 is also screwed to the mounting disk 141.
  • the motor further includes: a casing 11 which is hollow inside; a driving part which is installed on the wind guide structure; and a wind hood 13 which is clamped to one end of the casing 11.
  • the motor mounting frame 14 is fixed to the inside of the casing 11, and the inner end of the supporting rib 142 is fixed to the outer circumference of the mounting plate 141, and the outer end of the supporting rib 142 is fixed to the inner circumference of the casing 11 to seal
  • the outer end of the portion 133 fits with the inner circumference of the casing 11 and maintains elastic contact.
  • the outer diameter of the fixed impeller 13 is larger than the inner diameter of the casing 11. Therefore, the fit between the sealing portion 133 and the casing 11 is an interference fit, which can achieve a gapless seal, which solves the problem of surging.
  • the part 133 is made of soft rubber, which is convenient for assembly.
  • the wind collecting hood 12 includes: a wind collecting portion 121 that gradually curves downward as the radius expands, and a skirt portion 122.
  • the skirt 122 is integrally combined with the wind collecting portion 121 on the outer periphery of the wind collecting portion 121 and is removed from the wind collecting portion 121.
  • the outer periphery of the wind collecting part 121 extends vertically downward
  • the inner circumference of the skirt portion 122 is attached to the outer end of the sealing portion 133 and maintains elastic contact, and the inner diameter of the wind shroud 12 is smaller than the outer diameter of the fixed impeller 13. Therefore, the fit between the sealing portion 133 and the wind hood 12 is an interference fit, which can achieve a gapless seal and solve the surge problem. At the same time, because the material of the sealing portion 133 is soft rubber, it is easy to assemble.
  • the top of the casing 11 is provided with a first buckle portion 111
  • the bottom end of the skirt portion 122 is provided with a second buckle portion 124
  • the second buckle portion 123 is matched with the first buckle portion
  • the wind hood 12 passes through the A buckle portion 111 and a second buckle portion 124 are buckled with the casing 11.
  • An air inlet 123 is opened in the center area of the top end of the wind collecting part 121.
  • the top of the wind collecting part 121 is provided with an air inlet 123.
  • the shape of the wind collecting part 121 expands in radius and gradually bends downward, which is convenient for the driving part to absorb the incoming air, and it is convenient for the outside air to enter the air guide channel and guide smoothly and evenly. tuyere.
  • the drive unit introduces the outside air from the air inlet 123 at the top of the wind hood 12, and releases it smoothly through the wind guide structure.
  • the fit between the fixed impeller 13 and the casing 11 and the wind hood 12 is an interference fit. , It can achieve gapless sealing, solve the motor surge problem, and make the motor run stably.
  • the material of the sealing part 133 is soft rubber, which is convenient for the assembly of the fixed impeller assembly 13.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种电机，包括用于引导气流的定叶轮（13）。该定叶轮包括：叶轮盘（131）；至少两片在叶轮盘的外周上呈螺旋状布置的叶片（132），相邻两片叶片间限有导风通道；其中，叶片的内端与叶轮盘的外周相固接，叶片的外端形成有密封部（133），密封部与电机的机壳或风罩过盈配合。该电机具有保证定叶轮与拢风罩或机壳为过盈装配的状态，同时定叶轮比较容易装配，不易卡死或破裂，密封效果好，解决传统间隙配合时的喘振问题，又解决过盈配合时的装配问题的有益效果。

Description

一种电机 技术领域
本发明涉及电机技术领域。更具体地说，本发明涉及一种电机。
背景技术
现有的吸尘器所用的高速无刷电机的定叶轮，都为塑料件，其以注塑的方式来实现量产，且定叶轮和风罩或机壳之间转配关系为间隙配合或者过盈配合，当转配关系为间隙配合时，定叶轮和风罩或机壳之间的间隙容易导致电机在小进风口状态下存在气流回流喘振的问题，当转配关系为过盈配合时，又增加了装配难度，过盈挤压容易导致叶片变形或者叶片破损。有鉴于此，实有必要开发一种电机及电机解决上述问题。
发明内容
针对现有技术中存在的不足之处，本发明的目的是提供一种电机，其保证定叶轮与拢风罩或机壳为过盈装配的状态，同时定叶轮比较容易装配，不易卡死或破裂，密封效果好，解决传统间隙配合时的喘振问题，又解决过盈配合时的装配问题。
为了实现根据本发明的这些目的和其它优点，提供了一种电机，包括：电机包括用于引导气流的定叶轮，定叶轮包括：
叶轮盘；
至少两片在叶轮盘的外周上呈螺旋状布置的叶片，相邻两片叶片间限有导风通道；
其中，叶片的内端与叶轮盘的外周相固接，叶片的外端形成有密封部，密封部与电机的机壳/风罩过盈配合。
优选的是，密封部的材质为软胶。
优选的是，还包括：固定设置的电机安装架，定叶轮安装于电机安装架 之上，电机安装架与定叶轮共同形成一导风结构；
其中，电机安装架包括：横截面呈圆形的安装盘，以及呈放射状的布置于安装盘外周的支撑肋，支撑肋至少设有两个，相邻两支撑肋间隔布置以限定出位于两个支撑肋之间的导风口。
优选的是，导风口与导风通道的出风端一一对应。
优选的是，电机还包括：机壳，其内部中空；驱动部，其安装于导风结构之上；以及与机壳一端相卡接的拢风罩。
优选的是，电机安装架固接于机壳的内部，且支撑肋的内端与安装盘的外周相固接，支撑肋的外端与机壳的内周相固接，
密封部的外端与机壳的内周相贴合且保持弹性接触。
优选的是，拢风罩包括：随着半径扩大而逐渐弯曲向下的拢风部，以及裙部，裙部在拢风部的外周一体式地结合该拢风部并且从该拢风部的外周竖直向下延伸，
其中，裙部的内周与密封部的外端相贴合且保持弹性接触，拢风部顶端中央区域开设有进气口。
优选的是，机壳与拢风罩的内径小于定叶轮的外径。
本发明至少包括以下有益效果：本发明提供了一种电机，其保证定叶轮与拢风罩或机壳为过盈装配的状态，同时定叶轮比较容易装配，不易卡死或破裂，密封效果好，解决传统间隙配合时的喘振问题，又解决过盈配合时的装配问题。
本发明的其它优点、目标和特征将部分通过下面的说明体现，部分还将通过对本发明的研究和实践而为本领域的技术人员所理解。
附图说明
图1为本发明的一实施例电机的结构示意图；
图2为本发明的一实施例电机的爆炸视图；
图3为本发明的一实施例中电机的剖视图；
图4为本发明的一实施例中定叶轮的结构示意图；
图5为本发明的一实施例中定叶轮另一视角的结构示意图
图6为本发明的一实施例中机壳及电机安装架的结构示意图
图7为本发明的一实施例中拢风罩的剖视图。
具体实施方式
下面结合附图对本发明做进一步的详细说明，本发明的前述和其它目的、特征、方面和优点将变得更加明显，以令本领域技术人员参照说明书文字能够据以实施。在附图中，为清晰起见，可对形状和尺寸进行放大，并将在所有图中使用相同的附图标记来指示相同或相似的部件。在下列描述中，诸如中心、厚度、高度、长度、前部、背部、后部、左边、右边、顶部、底部、上部、下部等用词为基于附图所示的方位或位置关系。特别地，“高度”相当于从顶部到底部的尺寸，“宽度”相当于从左边到右边的尺寸，“深度”相当于从前到后的尺寸。这些相对术语是为了说明方便起见并且通常并不旨在需要具体取向。涉及附接、联接等的术语(例如，“连接”和“附接”)是指这些结构通过中间结构彼此直接或间接固定或附接的关系、以及可动或刚性附接的关系，除非以其他方式明确地说明。
作为本发明一实施例，参考图1～7，本发明提供了一种电机，其包括用于引导气流的定叶轮13，定叶轮13包括：
叶轮盘131；
至少两片在叶轮盘131的外周上呈螺旋状布置的叶片132，相邻两片叶片132间限有导风通道；
其中，叶片132的内端与叶轮盘131的外周相固接，叶片132的外端形成有密封部133，密封部与电机的机壳/风罩过盈配合。
进一步，密封部133的材质为软胶，保证定叶轮比较容易装配，不易卡死或破裂，密封效果好，且定叶轮13采用先注塑成型叶轮盘131及叶片132，在二次注塑成型密封部133。
进一步，还包括：固定设置的电机安装架14，定叶轮13安装于电机安装架14之上，电机安装架14与定叶轮13共同形成一导风结构；
其中，电机安装架14包括：横截面呈圆形的安装盘141，以及呈放射状 的布置于安装盘141外周的支撑肋142，支撑肋142至少设有两个，相邻两支撑肋142间隔布置以限定出位于两个支撑肋142之间的导风口。导风口与导风通道的出风端一一对应。外来进风经定叶轮13的导风通道导引入导风口，在经导风口平顺均匀的释放于电机内部，使电机运行更加稳定。
作为本发明一优选的实施方式，安装盘141顶端凸起有一定位部1411且安装盘141顶端表面开设有第一定位孔1412，叶轮盘131内周开设有第二定位孔1311，叶轮盘131底端设有定位柱1312，叶轮盘131通过第一定位孔1412和定位柱1312及定位部1411和第二定位孔1311定位于安装盘141顶端，且叶轮盘131还与安装盘141螺接。
进一步，电机还包括：机壳11，其内部中空；驱动部，其安装于导风结构之上；以及与机壳11一端相卡接的拢风罩13。
进一步，电机安装架14固接于机壳11的内部，且支撑肋142的内端与安装盘141的外周相固接，支撑肋142的外端与机壳11的内周相固接，密封部133的外端与机壳11的内周相贴合且保持弹性接触。同时，定叶轮13的外径大于机壳11的内径，因此，密封部133与机壳11之间的配合为过盈配合，能做到无间隙密封，解决了喘振问题，同时，因为密封部133的材质为软胶，便于装配。
进一步，拢风罩12包括：随着半径扩大而逐渐弯曲向下的拢风部121，以及裙部122，裙部122在拢风部121的外周一体式地结合该拢风部121并且从该拢风部121的外周竖直向下延伸，
其中，裙部122的内周与密封部133的外端相贴合且保持弹性接触，拢风罩12的内径小于定叶轮13的外径。因此，密封部133与拢风罩12之间的配合为过盈配合，能做到无间隙密封，解决了喘振问题，同时，因为密封部133的材质为软胶，便于装配。
进一步，机壳11顶部设有第一卡扣部111，裙部122底端设有第二卡扣部124，第二卡扣部123与第一卡扣部相匹配，拢风罩12通过第一卡扣部111及第二卡扣部124与机壳且11相卡接。拢风部121顶端中央区域开设有进气口123。拢风部121的顶端设有进气口123，同时拢风部121的外形为半径扩大而逐渐弯曲向下，便于驱动部吸取外来进风，且便于外来进风平顺均匀进 入导风通道及导风口。
综上所述，驱动部将外部空气从拢风罩12顶端的进气口123导入，经导风结构平稳释放，定叶轮13与机壳11及拢风罩12之间的配合为过盈配合，能做到无间隙密封，解决了电机的喘振问题，使电机运行稳定，同时密封部133的材质为软胶，便于定叶轮组件13的装配。
这里说明的设备数量和处理规模是用来简化本发明的说明的。对本发明的应用、修改和变化对本领域的技术人员来说是显而易见的。
尽管本发明的实施方案已公开如上，但其并不仅仅限于说明书和实施方式中所列运用。它完全可以被适用于各种适合本发明的领域。对于熟悉本领域的人员而言，可容易地实现另外的修改。因此在不背离权利要求及等同范围所限定的一般概念下，本发明并不限于特定的细节和这里示出与描述的图例。

Claims (8)

  1. 一种电机，其特征在于，所述电机包括用于引导气流的定叶轮(13)，所述定叶轮(13)包括：
    叶轮盘(131)；
    至少两片在所述叶轮盘(131)的外周上呈螺旋状布置的叶片(132)，相邻两片所述叶片(132)间限有导风通道；
    其中，所述叶片(132)的内端与所述叶轮盘(131)的外周相固接，所述叶片(132)的外端形成有密封部(133)，所述密封部与所述电机的机壳/风罩过盈配合。
  2. 如权利要求1所述的电机，其特征在于，所述密封部(133)的材质为软胶。
  3. 如权利要求1所述的电机，其特征在于，还包括：固定设置的电机安装架(14)，所述定叶轮(13)安装于所述电机安装架(14)之上，所述电机安装架(14)与所述定叶轮(13)共同形成一导风结构；
    其中，所述电机安装架(14)包括：横截面呈圆形的安装盘(141)，以及呈放射状的布置于所述安装盘(141)外周的支撑肋(142)，所述支撑肋(142)至少设有两个，相邻两支撑肋(142)间隔布置以限定出位于两个所述支撑肋(142)之间的导风口。
  4. 如权利要求3所述的电机，其特征在于，所述导风口与所述导风通道的出风端一一对应。
  5. 如权利要求1所述的电机，其特征在于，所述电机还包括：机壳(11)，其内部中空；驱动部，其安装于所述导风结构之上；以及与所述机壳(11)一端相卡接的拢风罩(13)。
  6. 如权利要求3所述的电机，其特征在于，所述电机安装架(14)固接于所述机壳(11)的内部，且所述支撑肋(142)的内端与所述安装盘(141)的外周相固接，所述支撑肋(142)的外端与所述机壳(11)的内周相固接，
    所述密封部(133)的外端与所述机壳(11)的内周相贴合且保持弹性接触。
  7. 如权利要求5所述的电机，其特征在于，所述拢风罩(12)包括：随着半径扩大而逐渐弯曲向下的拢风部(121)，以及裙部(122)，所述裙部(122)在所述拢风部(121)的外周一体式地结合该拢风部(121)并且从该拢风部(121)的外周竖直向下延伸，
    其中，所述裙部(122)的内周与所述密封部(133)的外端相贴合且保持弹性接触，所述拢风部(121)顶端中央区域开设有进气口(123)。
  8. 如权利要求7所述的电机，其特征在于，所述机壳(11)与所述拢风罩(12)的内径小于所述定叶轮(13)的外径。
PCT/CN2019/120422 2019-08-30 2019-11-22 一种电机 WO2021036038A1 (zh)

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