WO2010100756A1 - 冷却ファン付モータ - Google Patents
冷却ファン付モータ Download PDFInfo
- Publication number
- WO2010100756A1 WO2010100756A1 PCT/JP2009/054304 JP2009054304W WO2010100756A1 WO 2010100756 A1 WO2010100756 A1 WO 2010100756A1 JP 2009054304 W JP2009054304 W JP 2009054304W WO 2010100756 A1 WO2010100756 A1 WO 2010100756A1
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- WIPO (PCT)
- Prior art keywords
- fan
- motor
- cooling
- cooling fan
- bracket
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
Definitions
- the present invention relates to a motor with a cooling fan mainly used as a spindle motor of a machine tool.
- a fan housing that is attached to a rear end portion of a motor and accommodates and holds an axial fan that cools the motor, and includes a finger guard portion with a small lattice spacing for preventing danger, a fan holding portion, and the shaft
- a motor cooling fan housing in which a gap between the outer peripheral portion of the flow fan and the outer peripheral housing portion that forms a cooling air flow path is set integrally with an engineering plastic material. Reference 1).
- a forced cooling type fully-closed motor in which the outer cover of the fully-closed motor is cooled by cooling air introduced by an electric fan through a wind guide duct, the bearing supporting the rotating shaft of the motor, and the bearing
- a wind guide casing having an air blowing port for sending out the cooling air introduced around the mounting portion in a direction along the outer wall of the frame on which the heat dissipating fins of the motor are arranged, and the cooling air sent in a direction along the outer wall of the frame is guided.
- a forced cooling fully-closed motor is disclosed that includes a wind guide cover that covers the outside of the cooling fins for guiding in a direction along the outer wall of the mounting portion of the bearing opposite to the mounting side of the wind casing (for example, a patent) Reference 2).
- the present invention has been made in view of the above, and the fan housing and the cooling fan are not fixed by the oil sucked together with the air, the cooling air pressure loss is small, and the cooling efficiency of the frame is high.
- the purpose is to obtain a motor with a fan.
- the present invention provides a rotor, a front bracket and a rear bracket that respectively support the front side and the rear side of the rotation shaft of the rotor, and a stator that is held in the front.
- a motor with a cooling fan comprising: a cylindrical frame connecting the bracket and the rear bracket; a box-shaped fan housing attached to the rear side of the rear bracket; and a cooling fan disposed in the fan housing.
- the fan housing has a central wall closed portion and a peripheral blowout portion, and the cooling fan is a centrifugal fan or a mixed flow fan that blows air from the inside in the radial direction to the outside. It is attached to the central blocking portion of the wall portion, and has a blowout air passage having a predetermined gap between the outer peripheral portion and the peripheral wall portion of the fan housing.
- the motor with a cooling fan according to the present invention has an effect that the fan housing and the cooling fan are not fixed by the oil sucked together with the air.
- FIG. 1 is a longitudinal sectional view showing an embodiment of a motor with a cooling fan according to the present invention.
- FIG. 2 is a cross-sectional view of the frame of the motor with a cooling fan according to the embodiment.
- FIG. 3 is an enlarged cross-sectional view of the ventilation path of the frame according to the embodiment.
- FIG. 4 is a rear view of the fan housing according to the embodiment.
- FIG. 5 is a front view of the fan housing according to the embodiment.
- FIG. 6 is a perspective view of the centrifugal fan according to the embodiment.
- FIG. 7 is a perspective view of the mixed flow fan according to the embodiment.
- FIG. 8 is a perspective view of the bell mouth of the embodiment.
- FIG. 9 is a perspective view of the encoder cover according to the embodiment.
- FIG. 10 is a longitudinal sectional view showing a state in which cooling air passes through the motor with a cooling fan of the embodiment.
- FIG. 11 is a perspective view illustrating a state in which cooling air passes through the motor with a cooling fan according to the embodiment.
- FIG. 12 is a diagram schematically illustrating a rear wall portion of the fan housing according to the embodiment.
- FIG. 13 is a diagram illustrating the relationship between the opening ratio of the peripheral blow-out portion and the air volume ratio.
- FIG. 1 is a longitudinal sectional view showing an embodiment of a motor with a cooling fan according to the present invention.
- the motor 90 with a cooling fan according to the embodiment includes a rotor 10, a front bracket 16 and a rear bracket 18 that support the front side and the rear side of the rotating shaft 12 of the rotor 10 via bearings 14, respectively.
- a cylindrical frame 22 that holds the stator 20 inside and connects the front bracket 16 and the rear bracket 18, a box-shaped fan housing 28 attached to the rear side of the rear bracket 18, and the fan housing 28.
- a centrifugal fan 30 as a cooling fan.
- a wiring box 40 is installed on the rear bracket 18.
- the rear wall portion of the fan housing 28 has a central closing portion 28 b and a peripheral blowing portion 28 d, and the cooling fan 30 blows air from the inside in the radial direction to the outside.
- the fan motor body is attached to the central blocking portion 28b of the rear wall portion, and has a blowout air passage 29 having a predetermined gap between the outer peripheral portion of the fan and the peripheral wall portion 28e of the fan housing 28. .
- the cooling air sucked out from a ventilation path, which will be described later, of the rear bracket 18 is guided to a suction port 30 a (see FIG. 6) inside the blades of the centrifugal fan 30, and radially outward of the centrifugal fan 30.
- a bell mouth 32 is arranged to prevent the cooling air blown into the blowout air passage 29 from flowing back into the motor. The bell mouth 32 is held by the peripheral wall portion 28 e of the fan housing 28.
- a ventilation passage 27 is formed between the bell mouth 32 and the cooling air sucked from a later-described ventilation passage of the rear bracket 18 to the suction port 30 a inside the blade of the centrifugal fan 30.
- An encoder cover 26 as an air path plate is arranged. The encoder cover 26 is attached to the outer peripheral portion of the rear bracket 18 and is also installed on the rear surface of the rear bracket 18 to cover the encoder 24 that detects the amount of rotation of the rotary shaft 12.
- the encoder cover 26 has a convex portion 26a protruding rearward at the central portion, and the convex portion 26a causes the cooling air that is directed radially inward along the ventilation path 27 between the encoder cover 26 and the bell mouth 32 to be centrifuged.
- the fan 30 is directed toward the suction port 30a inside the blade.
- FIG. 2 is a cross-sectional view of the frame of the motor with a cooling fan according to the embodiment
- FIG. 3 is an enlarged cross-sectional view of the ventilation path of the frame according to the embodiment.
- the frame 22 is formed in a cylindrical shape having a circular hole 22 c into which the stator 20 is fitted and an outer shape of a substantially square ( ⁇ 204 mm) peripheral wall with chamfered corners. In the four corners, five ventilation passages 22a extending in the entire length of the five frames 22 are formed.
- connection portion of the front bracket 16 with the frame 22 is formed in a circular shape, the front ends of the ventilation paths 22a at the four corners of the frame 22 are opened, and the ventilation paths 22a can take in air from the front ends.
- the frame 22 is formed in a substantially square shape and the ventilation paths 22a are formed at the four corners, compared to the case where the frame 22 is formed in a cylindrical shape and a plurality of ventilation paths 22a are formed at equal intervals in the circumferential direction, The vertical and horizontal dimensions of the frame 22 can be reduced.
- a wind guide cover separate from the frame is not provided, the heat transfer efficiency between the frame 22 and the cooling air is high, and the cooling efficiency of the frame is high.
- a large number of grooves 22b are formed on the inner surface of the ventilation path 22a in parallel with the axial direction.
- the heat transfer area between the ventilation path 22a and the cooling air can be increased by about 15%.
- the frame 22 having the ventilation path 22a can be manufactured by extrusion molding of aluminum.
- the rear bracket 18 is formed in a substantially square outer shape like the frame 22, and the above-described ventilation path (not shown) communicating with the ventilation path 22 a is formed at the four corners facing the ventilation path 22 a of the frame 22. ing.
- FIG. 4 is a rear view of the fan housing of the embodiment
- FIG. 5 is a front view of the fan housing of the embodiment
- FIG. 6 is a perspective view of the centrifugal fan of the embodiment. These are the perspective views of the mixed flow fan of embodiment.
- the fan housing 28 is formed in a substantially square box shape, and the four corners on the opening side are screwed to the rear bracket 18.
- a rectangular pedestal portion 28a for mounting the body portion of the fan motor of the centrifugal fan 30 shown in FIG. 6 is provided at the center of the substantially square rear wall portion, and includes a rectangular central blocking portion that does not allow cooling air to pass, including the pedestal portion 28a. 28b is formed, and a peripheral outlet 28d provided with a plurality of rectangular cooling air outlets 28c is formed around the central closing part 28b.
- the body of the fan motor of the centrifugal fan 30 is attached to the pedestal portion 28a inside the fan housing 28, that is, the central closing portion 28b by screws. Between the outer peripheral portion of the centrifugal fan 30 and the peripheral wall portion 28e of the fan housing 28, there is provided a blowout air passage 29 having a wide gap about six times the gap in the case of the axial fan.
- the outer peripheral portion of the fan housing 28 and the peripheral wall portion 28e of the fan housing 28 are not fixed by the oil sucked and attached to the blades.
- a mixed flow fan 34 having a suction port 34a shown in FIG. 7 may be used.
- the mixed flow fan 34 blows air from the radially inner side to the outer side (diagonally rearward).
- FIG. 8 is a perspective view of the bell mouth of the embodiment
- FIG. 9 is a perspective view of the encoder cover of the embodiment.
- the outer peripheral portion of the bell mouth 32 is fixed to the peripheral wall portion 28 e behind the fan motor shaft length from the opening of the fan housing 28, and the inner peripheral portion of the bell mouth 32 is The suction port 30a (34a) inside the blades of the centrifugal fan 30 (the mixed flow fan 34) is located.
- the encoder cover 26 as a wind path plate is disposed in front of the bell mouth 32 with the ventilation path 27 interposed therebetween, and the outer peripheral portion is fixed to the rear end portion of the rear bracket 18.
- a circular convex portion 26a that protrudes rearward is molded at the center of the encoder cover 26, and the convex portion 26a is cooled in the air flow path 27 between the bell mouth 32 and the encoder cover 26 toward the radially inner side.
- the wind is directed rearward and directed toward the suction port 30a (34a) of the centrifugal fan 30 (the mixed flow fan 34).
- FIG. 10 is a cross-sectional view showing how the cooling air passes through the motor with the cooling fan according to the embodiment
- FIG. 11 is a perspective view showing how the cooling air passes through the motor with the cooling fan according to the embodiment. is there.
- the motor 90 with cooling fan has a ventilation path 22a (see FIG. 2) at the four corners of the front end of the frame 22.
- Air is sucked from the opening, and the ventilation path 22a ⁇ the ventilation path of the rear bracket 18 ⁇ the ventilation path 27 between the bell mouth 32 and the encoder cover 26 ⁇ the inside of the centrifugal fan 30 (the mixed flow fan 34) ⁇ the blowout air path 29 ⁇ The air is blown out through the path of the peripheral blowout portion 28d of the fan housing 28.
- FIG. 12 is a diagram schematically showing the rear wall portion of the fan housing according to the embodiment
- FIG. 13 is a diagram showing the relationship between the opening ratio of the peripheral blow-out portion and the air flow ratio.
- FIG. 12 schematically shows a state in which the peripheral blowing portion 28d is formed in all regions of the rear wall portion of the fan housing 28 except for the area of the circular body portion of the fan motor.
- the opening ratio of the peripheral blowing portion 28d when the opening ratio of the peripheral blowing portion 28d is 30% or more and 50% or less, the blowing air volume becomes larger than when the opening ratio is 100%, and when the opening ratio is approximately 40%, the maximum air volume ratio. (1.1 times). This is because, as shown in FIG. 10, when the area of the central blocking portion 28b is increased to some extent, the backflow due to the vortex of the cooling air blown to the outside from the peripheral blowing portion 28d is prevented. Therefore, the opening ratio of the rear wall portion of the fan housing 28 is preferably 30% or more and 50% or less, and most preferably about 40%.
- the motor with a cooling fan according to the present invention is suitable for a spindle motor of a machine tool.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
12 回転軸
14 軸受
16 前ブラケット
18 後ブラケット
20 ステータ
22 フレーム
22a 通風路
22b 溝
22c 円形孔
24 エンコーダ
26 エンコーダカバー(風路板)
26a 凸部
27 通風路
28 ファンハウジング
28a 台座部
28b 中央閉塞部
28c 吹出し口
28d 周辺吹出し部
28e 周壁部
29 吹出し風路
30 遠心ファン
30a 吸込口
32 ベルマウス
34 斜流ファン
34a 吸込口
40 配線ボックス
90 冷却ファン付モータ
図1は、本発明にかかる冷却ファン付モータの実施の形態を示す縦断面図である。図1に示すように、実施の形態の冷却ファン付モータ90は、ロータ10と、ロータ10の回転軸12の前側及び後側を夫々軸受14を介して支持する前ブラケット16及び後ブラケット18と、ステータ20を内部に保持し前ブラケット16と後ブラケット18とを接続する筒状のフレーム22と、後ブラケット18の後側に取付けられた箱形のファンハウジング28と、ファンハウジング28内に配置された冷却ファンとしての遠心ファン30と、を備えている。なお、後ブラケット18上には、配線ボックス40が設置されている。
Claims (10)
- ロータと、該ロータの回転軸の前側及び後側を夫々支持する前ブラケット及び後ブラケットと、ステータを内部に保持し前記前ブラケットと後ブラケットとを接続する筒状のフレームと、前記後ブラケットの後側に取付けられた箱形のファンハウジングと、該ファンハウジング内に配置された冷却ファンと、を備える冷却ファン付モータであって、
前記ファンハウジングの後壁部は、中央閉塞部と周辺吹出し部とを有し、
前記冷却ファンは、空気を径方向内側から外側へ吹出す遠心ファン又は斜流ファンであり、前記後壁部の中央閉塞部に取付けられ、外周部と前記ファンハウジングの周壁部との間に所定の間隙の吹出し風路を有することを特徴とする冷却ファン付モータ。 - 前記ファンハウジングの後壁部の全面積からファンモータの胴体面積を差引いた面積に対する前記周辺吹出し部の面積の割合が、30%以上50%以下であることを特徴とする請求項1に記載の冷却ファン付モータ。
- 前記ファンハウジングの後壁部の全面積からファンモータの胴体面積を差引いた面積に対する前記周辺吹出し部の面積の割合が、略40%であることを特徴とする請求項1に記載の冷却ファン付モータ。
- 前記ファンハウジング及びフレームの周壁部並びに前記後ブラケットの外形は、略正四角形に形成され、前記フレーム及び後ブラケットの四隅には、軸方向に通風路が形成されていることを特徴とする請求項1に記載の冷却ファン付モータ。
- 前記フレームの通風路の内面には、軸方向に多数の溝が形成されていることを特徴とする請求項4に記載の冷却ファン付モータ。
- 前記後ブラケットの後方には、該後ブラケットの通風路から吸出された冷却風を、前記遠心ファン又は斜流ファンの羽根の内側の吸込口に導くとともに、前記遠心ファン又は斜流ファンの径方向外側の吹出し風路へ吹出された冷却風が、モータ内部へ逆流するのを防ぐベルマウスが配置されていることを特徴とする請求項4に記載の冷却ファン付モータ。
- 前記ベルマウスの前方には、該ベルマウスとの間に、前記後ブラケットの通風路から吸出された冷却風を前記遠心ファン又は斜流ファンの羽根の内側の吸込口に導く通風路を形成する風路板が配置されていることを特徴とする請求項6に記載の冷却ファン付モータ。
- 前記風路板は、前記後ブラケットの後面に設置されて前記回転軸の回転量を検出するエンコーダを覆うエンコーダカバーであることを特徴とする請求項7に記載の冷却ファン付モータ。
- 前記風路板は、中央部に、後方へ突出する凸部を有し、該凸部により、前記風路板とベルマウスとの間の通風路を径方向内側に向かう冷却風を、前記遠心ファン又は斜流ファンの羽根の内側の吸込口に向けることを特徴とする請求項7に記載の冷却ファン付モータ。
- ロータと、該ロータの回転軸の前側及び後側を夫々支持する前ブラケット及び後ブラケットと、ステータを内部に保持し前記前ブラケットと後ブラケットとを接続する筒状のフレームと、前記後ブラケットの後側に取付けられた箱形のファンハウジングと、該ファンハウジング内に配置された冷却ファンと、を備える冷却ファン付モータであって、
前記フレームの周壁部の外形は、略正四角形に形成され、前記フレームの四隅には、軸方向に通風路が形成されていることを特徴とする冷却ファン付モータ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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KR1020117015039A KR101246009B1 (ko) | 2009-03-06 | 2009-03-06 | 냉각 팬 부착 모터 |
JP2011502556A JP5202724B2 (ja) | 2009-03-06 | 2009-03-06 | 冷却ファン付モータ |
CN200980157546.5A CN102334266B (zh) | 2009-03-06 | 2009-03-06 | 带冷却风扇的电动机 |
PCT/JP2009/054304 WO2010100756A1 (ja) | 2009-03-06 | 2009-03-06 | 冷却ファン付モータ |
TW098114947A TWI430542B (zh) | 2009-03-06 | 2009-05-06 | 附有冷卻風扇之馬達 |
Applications Claiming Priority (1)
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PCT/JP2009/054304 WO2010100756A1 (ja) | 2009-03-06 | 2009-03-06 | 冷却ファン付モータ |
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JP (1) | JP5202724B2 (ja) |
KR (1) | KR101246009B1 (ja) |
CN (1) | CN102334266B (ja) |
TW (1) | TWI430542B (ja) |
WO (1) | WO2010100756A1 (ja) |
Cited By (1)
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WO2015083204A1 (ja) * | 2013-12-06 | 2015-06-11 | 三菱電機株式会社 | 回転電機 |
Families Citing this family (5)
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TWI536717B (zh) | 2014-11-07 | 2016-06-01 | 財團法人工業技術研究院 | 馬達散熱裝置 |
TWI578670B (zh) * | 2015-05-20 | 2017-04-11 | Visionary Dynamics Co Ltd | A hub motor with a guide seat |
CN106329865A (zh) * | 2015-06-25 | 2017-01-11 | 泰荣动力科技股份有限公司 | 具有导风座的轮毂马达 |
KR101896173B1 (ko) * | 2017-02-01 | 2018-09-07 | 엘지전자 주식회사 | 팬 모터 |
KR20220043482A (ko) | 2020-09-29 | 2022-04-05 | 현대자동차주식회사 | 냉각구조가 구비된 모터 장치 |
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JPH0340860U (ja) * | 1989-08-29 | 1991-04-19 | ||
JPH0787711A (ja) * | 1993-09-16 | 1995-03-31 | Fanuc Ltd | 冷却媒体通路を備えた電動機のステータ |
JPH07245913A (ja) * | 1994-03-03 | 1995-09-19 | Fanuc Ltd | 空冷式電動機 |
JPH114559A (ja) * | 1997-06-12 | 1999-01-06 | Sanyo Denki Co Ltd | 冷却ファン付き電動機及び冷却ファン |
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US5780946A (en) * | 1994-03-03 | 1998-07-14 | Fanuc Ltd. | Air-cooled type electric motor |
CN101227129B (zh) * | 2007-10-08 | 2011-09-07 | 南阳防爆集团有限公司 | 大容量隐极套片式同步发电机 |
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2009
- 2009-03-06 KR KR1020117015039A patent/KR101246009B1/ko active IP Right Grant
- 2009-03-06 JP JP2011502556A patent/JP5202724B2/ja active Active
- 2009-03-06 CN CN200980157546.5A patent/CN102334266B/zh active Active
- 2009-03-06 WO PCT/JP2009/054304 patent/WO2010100756A1/ja active Application Filing
- 2009-05-06 TW TW098114947A patent/TWI430542B/zh active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0340860U (ja) * | 1989-08-29 | 1991-04-19 | ||
JPH0787711A (ja) * | 1993-09-16 | 1995-03-31 | Fanuc Ltd | 冷却媒体通路を備えた電動機のステータ |
JPH07245913A (ja) * | 1994-03-03 | 1995-09-19 | Fanuc Ltd | 空冷式電動機 |
JPH114559A (ja) * | 1997-06-12 | 1999-01-06 | Sanyo Denki Co Ltd | 冷却ファン付き電動機及び冷却ファン |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2015083204A1 (ja) * | 2013-12-06 | 2015-06-11 | 三菱電機株式会社 | 回転電機 |
JP6000474B2 (ja) * | 2013-12-06 | 2016-09-28 | 三菱電機株式会社 | 回転電機 |
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TW201034351A (en) | 2010-09-16 |
KR20110111282A (ko) | 2011-10-10 |
CN102334266B (zh) | 2014-03-12 |
KR101246009B1 (ko) | 2013-03-20 |
JPWO2010100756A1 (ja) | 2012-09-06 |
TWI430542B (zh) | 2014-03-11 |
CN102334266A (zh) | 2012-01-25 |
JP5202724B2 (ja) | 2013-06-05 |
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