JPS61251449A - Fan cover of rotary electric machine - Google Patents
Fan cover of rotary electric machineInfo
- Publication number
- JPS61251449A JPS61251449A JP9080485A JP9080485A JPS61251449A JP S61251449 A JPS61251449 A JP S61251449A JP 9080485 A JP9080485 A JP 9080485A JP 9080485 A JP9080485 A JP 9080485A JP S61251449 A JPS61251449 A JP S61251449A
- Authority
- JP
- Japan
- Prior art keywords
- fan cover
- fan
- electric machine
- cover
- hole
- 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
Classifications
-
- 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
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
-
- 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
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は回転電機のファンカバーＫｇＦ、シ、特に全閉
外扇形回転電機のファンカバーに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a fan cover KgF for a rotating electric machine, and particularly to a fan cover for a totally enclosed external sector type rotating electric machine.
従来の回転電機のファンカバーを第４図に基き説明する
。ここで、１はファンカバー、２Ｆｉフアン、８は回転
軸、４はハウジングでらシ固定子５を内側に保持する。A conventional fan cover for a rotating electric machine will be explained based on FIG. 4. Here, 1 is a fan cover, 2Fi fan, 8 is a rotating shaft, and 4 is a housing that holds the stator 5 inside.
６は回転子鉄心であり固定子５の内側に位置する。７は
ブラケットであ９１回転軸３を軸受ｌＯを介して支承す
る。さらに詳しく説明する。第５図は第４図のＸ方向か
らみた側爾図である。ファンカバー１は円周方向へ伸び
る複数個の吸気口８を有する。これら吸気口８を有する
面は平面あるいはゆるやかな円弧面である。6 is a rotor core located inside the stator 5. Reference numeral 7 denotes a bracket that supports the rotating shaft 3 through a bearing IO. I will explain in more detail. FIG. 5 is a side view of FIG. 4 viewed from the X direction. The fan cover 1 has a plurality of intake ports 8 extending in the circumferential direction. The surface having these air intake ports 8 is a flat surface or a gently arcuate surface.
また、ファンカバー１の表面１ａは吸気口８の外側が円
周方向に見て平担である。（実開昭５４−２８９７８号
公報、実開昭５５−１０６４４８号公報）このようなフ
ァンカバー１を有する回転電機は周知のごとく動作する
。つ１シ、運転によりファン２が回転すると、冷却風は
第４図の矢印で示すように吸気口８よシ吸い込まれて排
気口９よりハウジング４側へ送られる。ここで％吸気口
８の上面１ｂに水滴がかかると、この水滴はファンカバ
ー１の表面１ａＫＩＥｊつて鉛直方向下側へ向って落下
する。水滴は吸気口８へ達すると冷却風の風圧によシフ
アンカバー１の内側へ吸い込まれる。そして、水滴はフ
ァン２の遠心力によプ霧状となシフアン２Ｓ回転軸８．
およびブラケット７等圧付着する。Further, the surface 1a of the fan cover 1 is flat when viewed from the outside of the intake port 8 in the circumferential direction. (JP-A-54-28978, JP-A-55-106448) A rotating electric machine having such a fan cover 1 operates in a well-known manner. When the fan 2 rotates during operation, cooling air is sucked in through the intake port 8 and sent to the housing 4 side through the exhaust port 9, as shown by the arrow in FIG. Here, when water droplets splash on the upper surface 1b of the air intake port 8, the water droplets fall vertically downward through the surface 1aKIEj of the fan cover 1. When the water droplets reach the intake port 8, they are sucked into the inside of the fan cover 1 by the wind pressure of the cooling air. The water droplets are then turned into mist by the centrifugal force of the fan 2.
And the bracket 7 is attached at equal pressure.
したがって、ファン２および回転軸８は早期に発錆し両
者が固着する欠点があった。このため。Therefore, the fan 2 and the rotating shaft 8 have the disadvantage that they rust early and become stuck together. For this reason.
分解時において、回転軸８からファン２が抜けずらかっ
たり、さらにはファン２を破損する恐れもあった。また
、ブラケット７と回転軸３との隙間Ｇから水が浸入し軸
受ｌＯを早期に寿命へ到らしめる欠点があった。During disassembly, it was difficult to remove the fan 2 from the rotating shaft 8, and there was also a risk that the fan 2 would be damaged. Further, there is a drawback that water enters through the gap G between the bracket 7 and the rotating shaft 3, causing the bearing 10 to reach the end of its life prematurely.
本発明の目的は上記欠点に鑑み、ファンカバー内への水
滴の侵入が少ない回転ｌｉＬ機のファンカバーを提供す
ることにある。SUMMARY OF THE INVENTION In view of the above drawbacks, it is an object of the present invention to provide a fan cover for a rotating LIL machine in which less water droplets enter the fan cover.
本発明の特徴はファンの外周および前面を覆いブラケッ
トに固定した回転電機のファン力／＜−において、ファ
ンカバーの外側前面に水平方向へ伸びる吸気孔と、この
吸気孔の上部に位置しておシ水平方向へ伸びる段部とを
設けたことにある。したがって、ファンカバーの外側上
部に水滴が掛シこの水滴が下部へ向って流れても段部は
水滴の向きを水平方向へ変化させることになる。このた
め。The present invention is characterized by an intake hole extending horizontally on the outer front surface of the fan cover and an air intake hole located above the intake hole when the fan power of a rotating electric machine whose outer periphery and front surface are covered and fixed to a bracket is fixed. This is because a stepped portion extending in the horizontal direction is provided. Therefore, even if water droplets are applied to the upper part of the outside of the fan cover and flow toward the lower part, the stepped portion changes the direction of the water droplets to the horizontal direction. For this reason.
水滴は吸気孔へ到達する量が少なくなシ、冷却風の圧力
によってファンカバー内へ侵入するのが減少する。Fewer water droplets reach the intake holes, and the pressure of the cooling air reduces the amount of water droplets that enter the fan cover.
以下、本発明の一実施例を第１図および＠２図に基き説
明する。第１図はファンカバー１を正面から見た平面図
、第２図は第１図のイーローハーニ＠ ＶＣＧって切断
した側面断面図である。ファンカバー１＃″ｔ＃１ｉｌ
ｃＫ水平方向へ伸びる吸気孔８と、同じく水平方向へ伸
びる段部１１とを有する。Hereinafter, one embodiment of the present invention will be described based on FIG. 1 and FIG. FIG. 1 is a plan view of the fan cover 1 seen from the front, and FIG. 2 is a side cross-sectional view of the fan cover 1 taken along the E-Lohani@VCG section of FIG. Fan cover 1#″t#1il
cK It has an intake hole 8 extending in the horizontal direction and a stepped portion 11 also extending in the horizontal direction.
段部１１は吸気孔８の上部に位置すると共に外側第８図
において、第４図と同一符号を付したもの社同−樵類の
部品を表す。ファンカバー１はファン２の外周２工およ
び前面２ｂｔ＆うと共に段部１１が水平に位那°シてブ
ラケット７に固定される。The stepped portion 11 is located above the intake hole 8, and on the outside in FIG. 8, the same reference numerals as in FIG. 4 represent parts of the same company. The fan cover 1 is fixed to the bracket 7 with the stepped portion 11 horizontally positioned along with the outer periphery 2 and the front surface 2b and 2 of the fan 2.
回転軸８は一端に７アン２が固定されると共に。The rotary shaft 8 has a 7-ring 2 fixed to one end thereof.
軸受１０を介してブラケット７に支承される。ハウジン
グ４は端部にブラケット７を嵌合させると共に内側に固
定子５を有する。回転子鉄心６は固定子５の内側に位置
すると共に回転軸８に固着される。It is supported by a bracket 7 via a bearing 10. The housing 4 has a bracket 7 fitted at its end and a stator 5 inside. The rotor core 6 is located inside the stator 5 and is fixed to the rotating shaft 8.
このような回転電機の運転によりファン２が回転すると
、ファンは冷却風を発生させる。この冷却風は図中矢印
で示すように吸気孔８から内側Ｂへ吸い込まれる。そし
て、冷却風は排気口９よりハウジング４側へ送られ回転
電機を冷却する。When the fan 2 rotates due to such operation of the rotating electric machine, the fan generates cooling air. This cooling air is sucked into the inside B from the intake hole 8 as shown by the arrow in the figure. The cooling air is then sent to the housing 4 side from the exhaust port 9 to cool the rotating electrical machine.
このような動作をする回転電機において、ファンカバー
１の上部１ａ部に水ｒｉ４Ｗが掛かる場合がある。この
とき、水１ｌ１１１ｉＷはファンカバー１の表面に沼っ
て下部へ向い落下する。ここで、ファンカバー１は段部
１１が水平方向へ伸びて位置するので１段部１１へ達し
た水滴Ｗは段部１１に沿って水平方向へ流れることにな
る。In a rotating electrical machine that operates in this manner, water ri4W may splash onto the upper portion 1a of the fan cover 1. At this time, the water 1l111iW stagnates on the surface of the fan cover 1 and falls toward the bottom. Here, since the step part 11 of the fan cover 1 is positioned so as to extend in the horizontal direction, the water droplet W that has reached the first step part 11 flows horizontally along the step part 11.
したがって、水滴Ｗは吸い込み口８へ達する量が減少す
ることＫｆｋる。つまシ、水滴Ｗは吸気口８から冷却風
と共に内側Ｂへ侵入する量が低減する。このため、ファ
ン２や回転軸８は水滴Ｗが付着するのが低減するととＫ
なり発錆の進行が遅くなる。また、軸受ｌＯは水滴Ｗの
侵入が減少するので、潤滑剤の劣化が少なく軸受寿命も
延びる効果がある。Therefore, the amount of water droplets W reaching the suction port 8 is reduced. The amount of water droplets W entering the inside B from the intake port 8 together with the cooling air is reduced. Therefore, the adhesion of water droplets W to the fan 2 and the rotating shaft 8 is reduced.
This slows down the progress of rusting. Further, since the bearing 10 has a reduced intrusion of water droplets W, there is an effect that the lubricant is less deteriorated and the bearing life is extended.
なお５本発明は上記実施例に限定するものではなく、徨
々変形例が考えられる。例えばファンカバー１の段部１
１は水平方向に対して物干傾斜した直膨状でもよく、ま
た中央から両側下部へ傾斜するへ字状でもよい。It should be noted that the present invention is not limited to the above-mentioned embodiments, and many modifications can be made. For example, step 1 of fan cover 1
1 may be in the shape of a straight bulge that is inclined with respect to the horizontal direction, or may be in the shape of a square that is inclined from the center to the bottom of both sides.
以上説明したように１本発明はファンカバーに水平方向
へ伸びる複数個の吸気孔と、これら吸気孔の上部に位置
し水平方向へ伸びる段部を設けたのでファンカバー上部
に落下した水滴が段部で遮光ぎられる。このため、水滴
は吸気孔から冷却風と共にファンカバーの内側へ侵入す
るのが大幅に低減され、ファンや回転軸への付着量が減
少する。As explained above, one aspect of the present invention is that the fan cover is provided with a plurality of intake holes extending in the horizontal direction and a stepped portion positioned above these intake holes and extending in the horizontal direction. The light is blocked by the area. Therefore, water droplets are significantly prevented from entering the inside of the fan cover along with the cooling air from the intake holes, and the amount of water droplets adhering to the fan and rotating shaft is reduced.
また水滴は回転軸とブラケットとの隙間よシ軸受へ侵入
する飯が低減する。Furthermore, the chances of water droplets entering the bearing through the gap between the rotating shaft and the bracket are reduced.
したがって、ファンや回転軸の発鍮が減少し回転電機の
分解再組立が容易となる。また、軸受の信頼性も高くな
る効果がある。Therefore, the occurrence of brass on the fan and rotating shaft is reduced, and disassembly and reassembly of the rotating electric machine is facilitated. Furthermore, the reliability of the bearing also increases.
第１図は本発明のファンカバーの平面図、第２図は第１
図のイーローハーニ線に沿って切断した側面断面図、第
８図は本発明のファンカバーを取シ付けた回転電機の部
分断面図、第４図は従来のファンカバーを取９付けた回
転電機の部分断面図。
第５図は第４図のＸ方向から見た側面図で弗る。
１はファンカバー、２はファン、７はブラケット、８は
吸い込み孔、１１は段部、２ａはファンの外周、２ｂは
ファンの前面。Fig. 1 is a plan view of the fan cover of the present invention, and Fig. 2 is a plan view of the fan cover of the present invention.
8 is a partial sectional view of a rotating electrical machine with the fan cover of the present invention attached, and FIG. Partial cross-sectional view. FIG. 5 is a side view viewed from the X direction of FIG. 4. 1 is a fan cover, 2 is a fan, 7 is a bracket, 8 is a suction hole, 11 is a stepped portion, 2a is the outer periphery of the fan, and 2b is the front surface of the fan.
Claims (1)
バーにおいて、前記ファンカバーが水平方向へ伸びる吸
気孔と、この吸気孔の上部に位置しており水平方向へ伸
びる段部とを有していることを特徴とする回転電機のフ
ァンカバー。1. A fan cover for a rotating electric machine that covers the outer periphery and front surface of the fan, wherein the fan cover has an intake hole that extends in the horizontal direction, and a stepped portion that is located above the intake hole and extends in the horizontal direction. A fan cover for rotating electrical machinery characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9080485A JPS61251449A (en) | 1985-04-30 | 1985-04-30 | Fan cover of rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9080485A JPS61251449A (en) | 1985-04-30 | 1985-04-30 | Fan cover of rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61251449A true JPS61251449A (en) | 1986-11-08 |
Family
ID=14008775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9080485A Pending JPS61251449A (en) | 1985-04-30 | 1985-04-30 | Fan cover of rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61251449A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5283490A (en) * | 1993-01-11 | 1994-02-01 | Marathon Electric Mfg. Corp. | Ventilating apparatus for dynamoelectric machine with animal restricted ventilating openings |
| EP1450465A1 (en) * | 2003-02-21 | 2004-08-25 | Denso Corporation | Vehicle AC Generator |
| CN104065196A (en) * | 2014-06-24 | 2014-09-24 | 上海电机***节能工程技术研究中心有限公司 | Vertical-type high-voltage motor fan cover |
| CN111092519A (en) * | 2019-12-13 | 2020-05-01 | 陈虎威 | Multifunctional inner rotor direct-drive permanent magnet synchronous motor |
| JP2022068740A (en) * | 2020-10-22 | 2022-05-10 | 三菱電機株式会社 | Electric motor |
-
1985
- 1985-04-30 JP JP9080485A patent/JPS61251449A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5283490A (en) * | 1993-01-11 | 1994-02-01 | Marathon Electric Mfg. Corp. | Ventilating apparatus for dynamoelectric machine with animal restricted ventilating openings |
| EP1450465A1 (en) * | 2003-02-21 | 2004-08-25 | Denso Corporation | Vehicle AC Generator |
| US6900566B2 (en) | 2003-02-21 | 2005-05-31 | Denso Corporation | Vehicle AC generator |
| CN104065196A (en) * | 2014-06-24 | 2014-09-24 | 上海电机***节能工程技术研究中心有限公司 | Vertical-type high-voltage motor fan cover |
| CN111092519A (en) * | 2019-12-13 | 2020-05-01 | 陈虎威 | Multifunctional inner rotor direct-drive permanent magnet synchronous motor |
| JP2022068740A (en) * | 2020-10-22 | 2022-05-10 | 三菱電機株式会社 | Electric motor |
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