JPH10210727A - Cooling fan mechanism of outer rotor brushless motor - Google Patents
Cooling fan mechanism of outer rotor brushless motorInfo
- Publication number
- JPH10210727A JPH10210727A JP2011797A JP2011797A JPH10210727A JP H10210727 A JPH10210727 A JP H10210727A JP 2011797 A JP2011797 A JP 2011797A JP 2011797 A JP2011797 A JP 2011797A JP H10210727 A JPH10210727 A JP H10210727A
- Authority
- JP
- Japan
- Prior art keywords
- outer rotor
- lid
- brushless motor
- fan mechanism
- motor
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Landscapes
- Brushless Motors (AREA)
- Motor Or Generator Cooling System (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、アウタロータ・
ブラシレスモータに係り、特にコイルに発生するジュー
ル熱を効率よく冷やすことができるアウタロータ・ブラ
シレスモータの冷却用ファン機構に関するものである。TECHNICAL FIELD The present invention relates to an outer rotor
The present invention relates to a brushless motor, and more particularly to a cooling fan mechanism for an outer rotor / brushless motor that can efficiently cool Joule heat generated in a coil.
【０００２】[0002]
【従来の技術】通常この種のモータには、例えば図４に
示すように、内側に外向き凸状部１００Ａを有するイン
ナステータ１００と、このインナステータ１００の外側
にこれを囲むように内向き凸状又は円筒状の磁極２００
Ａを有するアウタロ−タ２００とを配設した構成のもの
であって、このインナステータ１００側の各凸状部１０
０Ａには、適宜の巻線を巻装させて形成したコイル１０
０Ｂを取り付けたものが知られている。2. Description of the Related Art Generally, a motor of this type includes an inner stator 100 having an outwardly projecting portion 100A on the inside as shown in FIG. Convex or cylindrical magnetic pole 200
A and an outer rotor 200 having an A.
0A is a coil 10 formed by winding an appropriate winding.
OB is known.
【０００３】ところで、通常このようなアウタロータ式
のモータにあっては、ステータ側に設けたコイルから発
生するジュール熱によってそのステータコアが加熱され
てしまい、充分なパワーを発揮することができない場合
もある。そこで、このようなモータにおいて、特にある
程度大きなパワーを発揮することができるものにあって
は、発生する熱を発散させるための冷却装置を付設した
ものの開発が検討されている。By the way, in such an outer rotor type motor, the stator core is heated by Joule heat generated from a coil provided on the stator side, so that sufficient power may not be exhibited in some cases. . Therefore, among such motors that can exert a particularly large power, development of a motor provided with a cooling device for dissipating generated heat is being studied.
【０００４】[0004]
【発明が解決しようとする課題】ところが、このような
アウタロータ式のモータにあっては、通常この冷却装置
がモータの本体の外側に別に取り付ける構成となってい
るから、内部（中心部）側のコイルから発生する熱に対
する冷却方式としては好ましいものではない。またこの
外付け方式の冷却装置では、装置全体が大型化するとと
もに、製造コストの増大を招いている。However, in such an outer rotor type motor, since the cooling device is usually attached separately to the outside of the main body of the motor, the cooling device on the inside (center portion) side is not provided. It is not preferable as a cooling method for heat generated from the coil. In addition, in this external cooling device, the size of the entire device is increased, and the manufacturing cost is increased.
【０００５】そこで、この発明は、上記した事情に鑑
み、良好な冷却効率が発揮できるものであって、しかも
小型化および低コストでの製造が可能なアウタロータ・
ブラシレスモータの冷却用ファン機構を提供することを
目的とするものである。Accordingly, the present invention has been made in view of the above-mentioned circumstances, and provides an outer rotor with good cooling efficiency, which can be downsized and manufactured at low cost.
It is an object of the present invention to provide a cooling fan mechanism for a brushless motor.
【０００６】[0006]
【課題を解決するための手段】即ち、この請求項１に記
載の発明は、外向き凸状の突起に磁極コイルを複数有す
るインナステータと、このインナステータを外側から取
り囲む内向き凸状突起または凸状あるいは円筒状のマグ
ネットを複数有するアウタロータとを配設したアウタロ
ータ・ブラシレスモータにおいて、前記アウタロータ自
体にファン機構を備えたものである。That is, according to the present invention, there is provided an inner stator having a plurality of magnetic pole coils on an outwardly projecting projection, and an inwardly projecting projection or an outer projection surrounding the inner stator from the outside. An outer rotor / brushless motor provided with an outer rotor having a plurality of convex or cylindrical magnets, wherein the outer rotor itself has a fan mechanism.
【０００７】また、請求項２に記載の発明は、アウタロ
ータのヨーク上面を切り起こして冷却用の羽根を複数箇
所形成したものである。According to a second aspect of the present invention, the upper surface of the yoke of the outer rotor is cut and raised to form a plurality of cooling blades.
【０００８】また、請求項３に記載の発明は、アウタロ
ータのヨーク上面側に少なくとも中央部が開口され切起
片に固定・支持される蓋を設けたものである。According to a third aspect of the present invention, a lid is provided on the upper surface side of the yoke of the outer rotor, the lid having at least a central portion opened and fixed and supported by the cut-and-raised piece.
【０００９】[0009]
【発明の実施の形態】以下、この発明の好適な実施例に
ついて添付図面を参照しながら説明する。図１はこの発
明に係るアウタロータ方式のブラシレスモータに設けた
冷却用のファン機構を示す概略断面図を示すものであ
る。この実施例のファン機構は、アウタロータ１のヨー
ク上面１１に羽根となる切起片１２を複数枚（この実施
例では６枚）設けるとともに、ヨーク上面１１側に切起
片１２に固定・支持される蓋２を設けた。Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic sectional view showing a cooling fan mechanism provided in an outer rotor type brushless motor according to the present invention. In the fan mechanism of this embodiment, a plurality of (six in this embodiment) cut-and-raised pieces 12 serving as blades are provided on the yoke upper surface 11 of the outer rotor 1, and are fixed and supported by the cut-and-raised pieces 12 on the yoke upper surface 11 side. Cover 2 was provided.
【００１０】この実施例のヨーク１１上面の切起片１２
は、図２に示すように、略台形状を有するものであっ
て、この実施例では半径方向に対して適宜の角度αだけ
傾いた斜面１２Ａ部分から切り起こし、図３に実線で示
すように角度β（具体的には垂直角度近く）立ち上げた
状態に形成されている。これによって、このヨーク１１
上面の切起片１２が形成された部分には風の抜ける孔１
１Ａが開口されることとなる。なお、このモータでは、
冷却効率を考慮して図２においてロータ１は通常両方向
に回転するように構成されており、蓋２の流入孔２Ａ
（後述する）から流入する空気を流入させて冷却するも
のであるが、逆回転であっても相当程度の風が流入する
ようになっている。The cut and raised piece 12 on the upper surface of the yoke 11 of this embodiment
Has a substantially trapezoidal shape as shown in FIG. 2, and in this embodiment, is cut and raised from a slope 12A inclined at an appropriate angle α with respect to the radial direction, and as shown by a solid line in FIG. The angle β (specifically, near the vertical angle) is formed in a raised state. Thereby, this yoke 11
A hole 1 through which the wind escapes
1A will be opened. In this motor,
In FIG. 2, the rotor 1 is normally configured to rotate in both directions in consideration of cooling efficiency.
Although cooling is performed by inflowing air that flows in from below (described later), a considerable amount of wind flows in even in reverse rotation.
【００１１】蓋２は、中心側が突出した略円盤状であっ
てヨーク１１上面とほぼ同様の大きさに形成されてお
り、特に中央部には外部空冷却用の風を導入させるため
の流入口２Ａが開口されている。また、この蓋２は、切
起片１２の垂直片１２Ｂに固定されており、この外周縁
部は外部から風が入り込む隙間が形成されぬようにヨー
ク上面１１に密着・密閉されている。なお、この実施例
では蓋２を設けてあるが、特にこの蓋が必要であるわけ
ではなく、この蓋を設けない場合には、図３において切
起片１２′を一点鎖線で示すように鋭角に傾斜させた構
成が好ましい。The lid 2 has a substantially disk shape with a central side protruding, and is formed in a size substantially the same as the upper surface of the yoke 11. In particular, an inlet for introducing air for cooling the outside air is provided at the center. 2A is open. The lid 2 is fixed to the vertical piece 12B of the cut-and-raised piece 12, and its outer peripheral edge is tightly sealed to the yoke upper surface 11 so that no gap is formed for air to enter from outside. In this embodiment, the lid 2 is provided. However, the lid is not particularly required. When the lid is not provided, the cut-and-raised piece 12 'is sharply angled as shown by a one-dot chain line in FIG. It is preferable to adopt a configuration in which the angle is inclined.
【００１２】従って、この実施例によれば、モータを作
動すると、外側のロータが回転を始めるから、このロー
タコア上面の起立片１２自体がファンの羽根として作用
する。その結果、蓋２の流入孔２Ａから取り込まれた空
気が孔１１Ａを通過してステータ３側のコイル３Ａ側に
吹き込み、発生するジュール熱を極めて効率的に発散さ
せることができるわけである。Therefore, according to this embodiment, when the motor is operated, the outer rotor starts to rotate, so that the standing piece 12 itself on the upper surface of the rotor core acts as a fan blade. As a result, the air taken in from the inflow hole 2A of the lid 2 passes through the hole 11A and blows into the coil 3A side of the stator 3, so that the generated Joule heat can be dissipated extremely efficiently.
【００１３】[0013]
【発明の効果】以上説明してきたようにこの発明によれ
ば、アウタロータにファン機構を設けたものから構成さ
れており、特にアウタロータのヨーク上面を切り起こし
て冷却用空気の取入口を複数箇所形成しヨーク上面に羽
根を設けたものにあっては、アウタロータ自体がファン
としての機能を有することとなり、頗る効率的な冷却作
用を発揮することができ、小型でパワーの大きなモータ
が形成できる。しかも、この発明によれば、専用の冷却
装置を別に取り付ける必要がない分、製造コストの削減
が図れるとともに、装置の小型化にも好適である。As described above, according to the present invention, the outer rotor is provided with a fan mechanism. In particular, the upper surface of the yoke of the outer rotor is cut and raised to form a plurality of cooling air inlets. In the case where the blades are provided on the upper surface of the yoke, the outer rotor itself has a function as a fan, so that a very efficient cooling action can be exhibited, and a small-sized and large-power motor can be formed. Moreover, according to the present invention, it is not necessary to separately install a dedicated cooling device, so that the manufacturing cost can be reduced and the device can be downsized.
【図１】この発明に係るモータの冷却用のファン機構を
示す概略断面図。FIG. 1 is a schematic cross-sectional view showing a fan mechanism for cooling a motor according to the present invention.
【図２】図１におけるアウタロータコアに形成する羽根
を示す平面図。FIG. 2 is a plan view showing blades formed on an outer rotor core in FIG. 1;
【図３】図２におけるＡ−Ａ線断面図。FIG. 3 is a sectional view taken along line AA in FIG. 2;
【図４】従来のモータを示す概略断面図。FIG. 4 is a schematic sectional view showing a conventional motor.
１ アウタロータ １１ ロータコア上面 １２ 切起片（はね） ２ 蓋 DESCRIPTION OF SYMBOLS 1 Outer rotor 11 Upper surface of rotor core 12 Cut and raised piece (splash) 2 Lid
Claims (3)
するインナステータと、このインナステータを外側から
取り囲む内向き凸状突起または凸状あるいは円筒状のマ
グネットを複数有するアウタロータとを配設したアウタ
ロータ・ブラシレスモータにおいて、 前記アウタロータ自体にファン機構を備えたことを特徴
とするアウタロータ・ブラシレスモータの冷却用ファン
機構。1. An inner stator having a plurality of magnetic pole coils on an outwardly projecting protrusion, and an outer rotor having a plurality of inwardly projecting protrusions or a plurality of convex or cylindrical magnets surrounding the inner stator from outside. A fan mechanism for cooling an outer rotor / brushless motor, wherein the outer rotor / brushless motor is provided with a fan mechanism.
て冷却用の羽根を複数箇所形成したことを特徴とする請
求項１に記載のアウタロータ・ブラシレスモータの冷却
用ファン機構。2. The cooling fan mechanism for an outer rotor brushless motor according to claim 1, wherein a plurality of cooling blades are formed by cutting and raising the upper surface of the yoke of the outer rotor.
も中央部が開口され切起片に固定・支持される蓋を設け
たことを特徴とする請求項２に記載のアウタロータ・ブ
ラシレスモータの冷却用ファン機構。3. A cooling fan mechanism for an outer rotor / brushless motor according to claim 2, wherein a lid is provided on an upper surface side of the yoke of the outer rotor, the lid being fixed to and supported by a cut-and-raised piece. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011797A JPH10210727A (en) | 1997-01-17 | 1997-01-17 | Cooling fan mechanism of outer rotor brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011797A JPH10210727A (en) | 1997-01-17 | 1997-01-17 | Cooling fan mechanism of outer rotor brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10210727A true JPH10210727A (en) | 1998-08-07 |
Family
ID=12018188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011797A Pending JPH10210727A (en) | 1997-01-17 | 1997-01-17 | Cooling fan mechanism of outer rotor brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10210727A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1018795A1 (en) * | 1999-01-08 | 2000-07-12 | Lg Electronics Inc. | Structure of rotor for outer rotor type brushless motor |
| US6914363B2 (en) | 1999-10-18 | 2005-07-05 | Lg Electronics Inc. | Structure of driving unit in drum type washing machine |
| JP2008503198A (en) * | 2004-06-14 | 2008-01-31 | ベール ゲーエムベーハー ウント コー カーゲー | Electric motor having outer rotor and built-in air-cooled electronic circuit |
| WO2008056624A1 (en) | 2006-11-08 | 2008-05-15 | Sanyo Denki Co., Ltd. | Contra-rotating axial blower |
| US7451625B2 (en) * | 2002-11-25 | 2008-11-18 | Lg Electronics Inc. | Structure for cooling motor of washing machine |
| US7541702B2 (en) | 2006-07-05 | 2009-06-02 | Sanyo Denki Co., Ltd. | Brushless fan motor |
| US7589442B2 (en) * | 2003-02-20 | 2009-09-15 | Lg Electronics Inc. | Motor and washing machine with the same mounted therein |
| CN108155758A (en) * | 2018-03-09 | 2018-06-12 | 上海惠深工具科技有限公司 | From cooling external rotor electric machine |
| DE102019101471A1 (en) * | 2019-01-22 | 2020-07-23 | Ebm-Papst Landshut Gmbh | External rotor motor with cooling wheel |
| US10781819B2 (en) | 2015-03-31 | 2020-09-22 | Sanyo Denki Co., Ltd. | Fan device with impeller having circular plate opening, sidewall opening and groove connecting the circular plate opening with the sidewall opening for efficiently cooling motor |
| EP3865711A1 (en) * | 2020-02-13 | 2021-08-18 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Fan with cover plate on the rotor bell |
-
1997
- 1997-01-17 JP JP2011797A patent/JPH10210727A/en active Pending
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392945C (en) * | 1999-01-08 | 2008-06-04 | Lg电子株式会社 | Rotor structure of external-rotor type brushless motor |
| USRE39416E1 (en) | 1999-01-08 | 2006-12-05 | Lg Electronics Inc. | Structure of rotor for outer rotor type brushless motor |
| EP1018795A1 (en) * | 1999-01-08 | 2000-07-12 | Lg Electronics Inc. | Structure of rotor for outer rotor type brushless motor |
| US6396177B1 (en) * | 1999-01-08 | 2002-05-28 | Lg Electronics Inc. | Structure of rotor for outer rotor type brushless motor |
| US6914363B2 (en) | 1999-10-18 | 2005-07-05 | Lg Electronics Inc. | Structure of driving unit in drum type washing machine |
| US7596973B2 (en) | 1999-10-18 | 2009-10-06 | Lg Electronics Inc. | Structure of driving unit in drum type washing machine |
| US7166950B2 (en) | 1999-10-18 | 2007-01-23 | Lg Electronics Inc. | Structure of driving unit in drum type washing machine |
| US7305857B2 (en) | 1999-10-18 | 2007-12-11 | Lg Electronics Inc. | Structure of driving unit in drum type washing machine |
| US7131178B2 (en) | 1999-10-18 | 2006-11-07 | Lg Electronics Inc. | Method of forming a drum type washing machine having a driving unit |
| US7441423B2 (en) | 1999-10-18 | 2008-10-28 | Lg Electronics Inc. | Drum type washing machine having a driving unit |
| US7114355B2 (en) | 1999-10-18 | 2006-10-03 | Lg Electronics, Inc. | Drum type washing machine having a driving unit |
| US7451625B2 (en) * | 2002-11-25 | 2008-11-18 | Lg Electronics Inc. | Structure for cooling motor of washing machine |
| US7589442B2 (en) * | 2003-02-20 | 2009-09-15 | Lg Electronics Inc. | Motor and washing machine with the same mounted therein |
| JP2008503198A (en) * | 2004-06-14 | 2008-01-31 | ベール ゲーエムベーハー ウント コー カーゲー | Electric motor having outer rotor and built-in air-cooled electronic circuit |
| US7541702B2 (en) | 2006-07-05 | 2009-06-02 | Sanyo Denki Co., Ltd. | Brushless fan motor |
| WO2008056624A1 (en) | 2006-11-08 | 2008-05-15 | Sanyo Denki Co., Ltd. | Contra-rotating axial blower |
| US7872381B2 (en) | 2006-11-08 | 2011-01-18 | Sanyo Denki Co., Ltd. | Counter-rotating axial-flow fan |
| TWI381097B (en) * | 2006-11-08 | 2013-01-01 | Sanyo Electric Co | Counter-rotating axial-flow fan |
| US10781819B2 (en) | 2015-03-31 | 2020-09-22 | Sanyo Denki Co., Ltd. | Fan device with impeller having circular plate opening, sidewall opening and groove connecting the circular plate opening with the sidewall opening for efficiently cooling motor |
| CN108155758A (en) * | 2018-03-09 | 2018-06-12 | 上海惠深工具科技有限公司 | From cooling external rotor electric machine |
| DE102019101471A1 (en) * | 2019-01-22 | 2020-07-23 | Ebm-Papst Landshut Gmbh | External rotor motor with cooling wheel |
| EP3865711A1 (en) * | 2020-02-13 | 2021-08-18 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Fan with cover plate on the rotor bell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20020611 |