WO2011076005A1 - 防水散热风扇 - Google Patents

防水散热风扇 Download PDF

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Publication number
WO2011076005A1
WO2011076005A1 PCT/CN2010/075221 CN2010075221W WO2011076005A1 WO 2011076005 A1 WO2011076005 A1 WO 2011076005A1 CN 2010075221 W CN2010075221 W CN 2010075221W WO 2011076005 A1 WO2011076005 A1 WO 2011076005A1
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WO
WIPO (PCT)
Prior art keywords
circuit board
waterproof
sealed chamber
coil
partition
Prior art date
Application number
PCT/CN2010/075221
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English (en)
French (fr)
Inventor
刘锦堂
Original Assignee
Liu Ching-Tang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Liu Ching-Tang filed Critical Liu Ching-Tang
Priority to DE212010000198U priority Critical patent/DE212010000198U1/de
Publication of WO2011076005A1 publication Critical patent/WO2011076005A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • F04D29/646—Mounting or removal of fans

Definitions

  • the invention relates to the field of heat dissipation fans, and in particular to a waterproof cooling fan.
  • cooling fans with waterproof function on the market, which mainly adopt two methods: one is vacuum coating on the circuit board, and the other is glue filling treatment. among them:
  • Vacuum coating treatment is to deposit a film on the whole surface of the circuit board.
  • the coated circuit board does have waterproof function.
  • vacuum coating also has many disadvantages: First, vacuum coating is expensive, which increases the cost of the fan and is not conducive to market competition; Secondly, it is easy to damage the electronic components on the circuit board during the coating process, which causes the fan to fail. Thirdly, if the product after vacuum coating is difficult to be found by the naked eye due to damage to the collision surface, the quality of the product is difficult to be guaranteed.
  • the glue filling process mainly uses glue to fill the space around the circuit board and its internal space to achieve the waterproof effect. This method is because the glue layer is thick, and the circuit board itself affects the heat dissipation of the circuit board, which easily causes the circuit board to burn out. Failure, in addition, the glue will also generate internal stress during the solidification process, which easily damages the electronic components on the board.
  • the object of the present invention is to provide a waterproof cooling fan with simple structure and long service life, which solves the problem of waterproof protection of the circuit board.
  • a waterproof cooling fan includes a stator and a rotor.
  • the stator has a fan frame, a coil and a circuit board.
  • the coil is fixed on the periphery of the shaft column of the fan frame, and the circuit board is fixed under the coil, and the column column extends out of a partition plate.
  • the baffle is enclosed with the waterproof cover of the fan frame to form a sealed chamber, the circuit board is located in the sealed cavity, the coil is located outside the sealed cavity, and the coil is electrically connected to the circuit board through a conductive component extending into the sealed cavity. .
  • the partition has a downwardly opening receiving cavity
  • the waterproof cover covers the opening of the receiving cavity from bottom to top and encloses the partition to form the sealed chamber.
  • the partition has an upwardly open receiving cavity, and the waterproof cover covers the opening of the receiving cavity from the top to the bottom and is enclosed with the partition to form the sealed chamber.
  • a sealing ring is interposed between the periphery of the waterproof cover and the receiving cavity.
  • the sealed chamber has a through hole through which the conductive member protrudes, and a waterproof sealant is disposed between the inner wall of the through hole and the conductive member.
  • the conductive element is a copper needle.
  • the invention has obvious advantages and beneficial effects compared with the prior art.
  • the main purpose is to provide a sealed chamber, the circuit board is installed in the sealed chamber and electrically connected to the coil outside the sealed chamber through the conductive member, thereby achieving waterproof protection of the circuit board.
  • Figure 1 is a perspective exploded view of a first embodiment of the present invention
  • Figure 2 is a cross-sectional view of a fan frame in a first embodiment of the present invention
  • Figure 3 is a perspective view of a fan frame in a first embodiment of the present invention.
  • Figure 4 is a side elevational view of the bottom cover of the first embodiment of the present invention.
  • Figure 5 is a cross-sectional view showing a first embodiment of the present invention.
  • Figure 6 is a perspective exploded view of a second embodiment of the present invention.
  • Figure 7 is a cross-sectional view showing a second embodiment of the present invention.
  • a waterproof cooling fan comprising a stator 10 and a rotor 20, wherein:
  • the stator 10 includes a fan frame 11 , a coil 12 and a circuit board 13 .
  • the fan frame 11 extends upward from the bottom surface to a shaft column 110 .
  • the coil 12 is fixed to the periphery of the shaft column 110 .
  • the shaft column 110 extends out of the shaft column 110 .
  • a partitioning plate 111 having a downwardly opening receiving cavity 112.
  • the waterproof cover 113 of the fan frame 11 covers the opening of the receiving cavity 112 from bottom to top and forms a sealed space with the partition 111.
  • the sealing member 1141 is disposed between the peripheral edge of the waterproof cover 113 and the receiving cavity 112, and the sealing ring 1141 is used.
  • the flexible rubber is used to reinforce the sealing effect of the sealed chamber 114; the circuit board 13 is mounted in the sealed chamber 114, and the circuit board 13 passes through the copper needle 116 and the coil 12 outside the sealed chamber 114.
  • the sealing chamber 114 has a through hole 1142 into which the copper needle 116 extends.
  • a waterproof sealant 117 is disposed between the inner wall of the through hole 1142 and the copper needle 116.
  • the rotor 20 includes a bearing 21, a magnetic ring 22 and a fan blade 23, and the bearing 21 is mounted in the shaft column 110.
  • the magnetic ring 22 is sleeved on the periphery of the coil 12 and mounted in the blade 23, the blade 23
  • the rotating shaft 231 is fixed to the bearing 21 and can drive the fan blade 23 to rotate with the bearing 21.
  • the product structure of the present embodiment is basically the same as that of the foregoing first embodiment, and the difference is as follows:
  • the partition 111 has a receiving cavity 112 opening upward, and the waterproof cover 113 covers the opening of the receiving cavity 112 from top to bottom, and forms a sealed chamber for mounting the circuit board 13 with the partition 111. 114.
  • this embodiment works in the same manner as the first embodiment described above, using the principle of electromagnetic induction to generate an alternating magnetic field between the coil 12 and the magnetic ring 22, driving the bearing 21 to operate to rotate the blade 23 Therefore, the operation of the entire fan is realized. Since the working principle of the present invention is a conventional technique, it will not be described in detail herein.
  • the design of the present invention is mainly focused on that the circuit board is installed in the sealed chamber and electrically connected to the coil outside the sealed chamber through the conductive member, thereby achieving waterproof protection of the circuit board.

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

Description

防水散热风扇 技术领域
本发明涉及散热风扇领域技术，尤其是指一种防水散热风扇。
背景技术
随着科技水平的不断发展，散热风扇的应用领域不断扩大，从CPU到服务器，从简单的通信设备到户外基站，风扇的应用环境越来越复杂，承担的作用越来越重要，然而现有习知的散热风扇大都缺乏防水功能，风扇内的电路板沾水后容易短路烧坏，致使风扇不能正常工作，从而引发严重后果，比如烧坏价格昂贵的服务器或其他主设备。
鉴于此，市面上出现了一些具有防水功能的散热风扇，其主要采用了两种方法：一种是对电路板进行真空镀膜处理，另一种是灌胶处理。其中：
真空镀膜处理是在电路板整体表面镀上一层膜，镀膜后的电路板确实具有防水功能，然而真空镀膜也有诸多不足:其一,真空镀膜成本昂贵，增加了风扇成本，不利于市场竞争；其二，在镀膜过程中容易破坏电路板上的电子组件致使风扇失效；其三，采用真空镀膜后的产品如果因碰撞表面受损用肉眼很难发现，产品的质量难以得到保证。
灌胶处理主要是采用胶填满电路板周围及其内部空间，以达到防水效果，此做法由于胶层较厚，包住电路板后影响电路板的本身散热，容易致使电路板烧坏，风扇失效，再者，胶在凝固过程中也会产生内应力，容易破坏电路板上的电子组件。
发明内容
本发明的目的是提供一种结构简单、使用寿命长的防水散热风扇，解决电路板的防水保护问题。
为实现上述目的本发明采用如下技术方案：
一种防水散热风扇，包括定子和转子，定子具有扇框、线圈和电路板，线圈固装于扇框的轴柱外围，电路板固装于线圈的下方，所述轴柱延伸出一隔板，该隔板与扇框的防水盖围合形成一密封容室，所述电路板位于该密封容室内，线圈位于密封容室外，且线圈通过伸入密封容室内的导电元件与电路板电连接。
作为一种优选方案，所述隔板具有一向下开口的容置凹腔，防水盖自下而上封盖住该容置凹腔的开口并与隔板围合形成前述密封容室。
作为一种优选方案，所述隔板具有一向上开口的容置凹腔，防水盖自上而下封盖住该容置凹腔的开口并与隔板围合形成前述密封容室。
作为一种优选方案，所述防水盖的周缘与容置凹腔之间夹设有密封环。
作为一种优选方案，所述密封容室具有供导电元件伸入的贯穿孔，于该贯穿孔内壁与导电元件之间设置有防水密封胶。
作为一种优选方案，所述导电元件为铜针。
本发明与现有技术相比具有明显的优点及有益效果，
其主要系通过设置一密封容室，电路板安装于该密封容室内并通过导电元件与密封容室外的线圈电连接，从而实现电路板的防水保护。
附图说明
图1是本发明之第一实施例的立体分解示意图；
图2是本发明之第一实施例中扇框的截面图；
图3是本发明之第一实施例中扇框的立体示图；
图4是本发明之第一实施例中底盖的侧视图；
图5是本发明之第一实施例的剖视图；
图6是本发明之第二实施例的立体分解示意图；
图7是本发明之第二实施例的剖视图。
附图标识说明：
10、定子
11、扇框110、轴柱
111、隔板112、容置凹腔
113、防水盖1131、扣脚
114、密封容室1141、密封环
1142、贯穿孔115、扣位
116、铜针117、密封胶
12、线圈13、电路板
20、转子
21、轴承22、磁环
23、扇叶
231、转轴
具体实施方式
下面结合附图与具体实施方式对本发明作进一步描述。
请参见图1至图5所示，其显示出了本发明之第一实施例的具体结构，一种防水散热风扇，包括定子10和转子20，其中：
所述定子10包括有扇框11、线圈12和电路板13，该扇框11自底面向上延伸出一轴柱110，线圈12固装于该轴柱110外围；所述轴柱110延伸出一隔板111，该隔板111具有一向下开口的容置凹腔112，扇框11的防水盖113自下而上封盖住该容置凹腔112的开口并与隔板111形成一密封容室114；所述防水盖113的扣脚1131与扇框11内的扣位115对应扣合，防水盖113的周缘与容置凹腔112之间夹设有密封环1141，该密封环1141采用柔韧性良好的橡胶制成，用于加强密封容室114的密封效果；所述电路板13安装于前述密封容室114内，该电路板13通过铜针116与密封容室114外的线圈12电连接，该密封容室114具有供铜针116伸入的贯穿孔1142，于该贯穿孔1142内壁与铜针116之间设置有防水密封胶117。
所述转子20包括轴承21、磁环22和扇叶23，该轴承21安装于前述轴柱110内，磁环22套设于前述线圈12外围且安装于扇叶23中，该扇叶23的转轴231与轴承21固接并可带动扇叶23随轴承21转动。
接着，请参见图6和图7所示，其显示出了本发明之第二实施例的具体结构，本实施例的产品结构与前述第一实施例的结构基本相同，其不同之处在于：所述隔板111具有的容置凹腔112开口向上，防水盖113自上而下封盖住该容置凹腔112的开口，并与隔板111形成用于安装电路板13的密封容室114。
使用时，此实施例与前述第一种实施例的工作原理相同，皆是利用电磁感应原理，通过线圈12与磁环22之间产生交替变化的磁场，驱动轴承21运转而使扇叶23转动，从而实现整个风扇的工作，由于本发明的工作原理为习知技术，故在此不加予详细阐述。
本发明的设计重点在于，其主要系通过设置一密封容室，电路板安装于该密封容室内并通过导电元件与密封容室外的线圈电连接，从而实现电路板的防水保护。
以上所述，仅是本发明较佳实施例而已，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 (6)

1、一种防水散热风扇，包括定子和转子，定子具有扇框、线圈和电路板，线圈固装于扇框的轴柱外围，电路板固装于线圈的下方，其特征在于：所述轴柱延伸出一隔板，该隔板与扇框的防水盖围合形成一密封容室，所述电路板位于该密封容室内，线圈位于密封容室外，且线圈通过伸入密封容室内的导电元件与电路板电连接。
2、根据权利要求1所述的防水散热风扇，其特征在于：所述隔板具有一向下开口的容置凹腔，防水盖自下而上封盖住该容置凹腔的开口并与隔板围合形成前述密封容室。
3、根据权利要求1所述的防水散热风扇，其特征在于：所述隔板具有一向上开口的容置凹腔，防水盖自上而下封盖住该容置凹腔的开口并与隔板围合形成前述密封容室。
4、根据权利要求2或3所述的防水散热风扇，其特征在于：所述防水盖的周缘与容置凹腔之间夹设有密封环。
5、根据权利要求1所述的防水散热风扇，其特征在于：所述密封容室具有供导电元件伸入的贯穿孔，于该贯穿孔内壁与导电元件之间设置有防水密封胶。
6、根据权利要求5所述的防水散热风扇，其特征在于：所述导电元件为铜针。
PCT/CN2010/075221 2009-12-24 2010-07-16 防水散热风扇 WO2011076005A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE212010000198U DE212010000198U1 (de) 2009-12-24 2010-07-16 Wasserdichter Lüfter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2009202654724U CN201627751U (zh) 2009-12-24 2009-12-24 防水散热风扇
CN200920265472.4 2009-12-24

Publications (1)

Publication Number Publication Date
WO2011076005A1 true WO2011076005A1 (zh) 2011-06-30

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CN (1) CN201627751U (zh)
DE (1) DE212010000198U1 (zh)
WO (1) WO2011076005A1 (zh)

Cited By (1)

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CN114860050A (zh) * 2022-06-20 2022-08-05 超聚变数字技术有限公司 服务器、电子设备和散热风扇

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104976144B (zh) * 2014-04-14 2017-10-10 佛山市建准电子有限公司 风扇及其马达防护盖
CN108266406A (zh) * 2018-02-12 2018-07-10 东莞永立电机有限公司 高效防水的散热风扇
CN114607637A (zh) * 2022-03-28 2022-06-10 株洲亿杰电子科技有限公司 散热风扇的灌胶防水方法

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CN201190677Y (zh) * 2008-04-28 2009-02-04 宝安区龙华凯美电机厂 防水型散热风扇
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DE20302576U1 (de) * 2002-03-02 2003-04-24 Papst Motoren Gmbh & Co Kg Anordnung eines Lüftergehäuses mit integriertem IP Schutz
DE202006018454U1 (de) * 2005-12-09 2007-04-19 Ebm-Papst St. Georgen Gmbh & Co. Kg Elektronisch kommutierter Außenläufermotor
CN201125876Y (zh) * 2007-12-05 2008-10-01 东莞寮步新旧围永立电机厂 一种防水防盐雾的散热风扇
CN201196159Y (zh) * 2008-04-25 2009-02-18 东莞寮步新旧围永立电机厂 防水风扇的导线出线结构
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114860050A (zh) * 2022-06-20 2022-08-05 超聚变数字技术有限公司 服务器、电子设备和散热风扇

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CN201627751U (zh) 2010-11-10

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