JPH0147102B2 - - Google Patents
Info
- Publication number
- JPH0147102B2 JPH0147102B2 JP57038922A JP3892282A JPH0147102B2 JP H0147102 B2 JPH0147102 B2 JP H0147102B2 JP 57038922 A JP57038922 A JP 57038922A JP 3892282 A JP3892282 A JP 3892282A JP H0147102 B2 JPH0147102 B2 JP H0147102B2
- Authority
- JP
- Japan
- Prior art keywords
- thrust
- stator
- rotor shaft
- core
- rotor
- 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.)
- Expired
Links
- 238000004804 winding Methods 0.000 claims description 18
- 239000010687 lubricating oil Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 5
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、内部に潤滑液が封入された潜水形
電動機の改良に関し、冷却効果の向上および軸受
の潤滑性能の向上を図ることを目的とするもので
ある。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to the improvement of a submersible electric motor in which lubricant is sealed inside, and its purpose is to improve the cooling effect and the lubricating performance of the bearing. It is something to do.
従来、一般に知られている従来のこの種の潜水
形電動機としては、特開昭55−66246号公報に開
示されているものがある。これは回転子の両端面
にフアンを一体的に設け、このフアンで電動機内
部の空気を循環させることにより、固定子コイル
等の冷却効果を高めるようにしたものである。
A conventional submersible electric motor of this type that is generally known is disclosed in Japanese Patent Laid-Open No. 55-66246. This is designed to improve the cooling effect of the stator coils, etc. by integrally providing fans on both end faces of the rotor and circulating the air inside the motor with the fans.
しかしながら、上記したような従来の潜水形電
動機は空気を循環させるものであるため、回転子
の両端面にフアンを大きく突出させる構成とする
ことができるが、潤滑液が封入された潜水形電動
機ではこの構成では流体抵抗が大となり、モータ
効率が低下するばかりでなく、フアン自体を固定
子鉄心に形成する必要があるため、回転子鉄心の
製作コスト、特に材料費が大となる欠点があつ
た。また、フアンを設けたものでは径方向だけで
なく軸方向にも流体が撹拌されるため、主要な発
熱源となるコイルエンド自体に対しての冷却効果
が低下し、自ずからフアン自体の形状が大とな
り、増々モータ効率が低下する要因となる。
However, since the conventional submersible motor as described above circulates air, it is possible to have a configuration in which the fans protrude greatly from both end faces of the rotor, but a submersible motor with lubricating fluid sealed This configuration not only increases fluid resistance and reduces motor efficiency, but also requires the fan itself to be formed on the stator core, which has the disadvantage of increasing the manufacturing cost of the rotor core, especially the material cost. . In addition, with a fan installed, the fluid is stirred not only in the radial direction but also in the axial direction, which reduces the cooling effect on the coil end itself, which is the main source of heat generation, and the shape of the fan itself becomes large. This becomes a factor that further reduces motor efficiency.
したがつて、本発明は上述したような従来の問
題に鑑みてなされたもので、その目的とするとこ
ろは、比較的簡単な構成で潤滑油をスラスト円板
の径方向に効果的に送出し巻線を効果的冷却し得
るようにした潜水形電動機を提供することにあ
る。 Therefore, the present invention has been made in view of the above-mentioned conventional problems, and its object is to effectively send lubricating oil in the radial direction of a thrust disk with a relatively simple structure. An object of the present invention is to provide a submersible electric motor whose windings can be effectively cooled.
本発明は上記目的を達成するために、潤滑油が
封入された固定子枠１と、固定子枠１の内面に固
定された固定子鉄心２と、固定子鉄心２の各スロ
ツトに挿入された固定子巻線群３と、固定子枠１
内に配設された回転子軸１６と、回転子軸１６を
回転自在に軸支するスラスト軸受１５と、回転子
軸１６に固定された回転子鉄心１７およびスラス
ト円板１８，１９と、回転子鉄心１７に設けられ
たエンドリング２２，２３を備え、前記スラスト
円板１８，１９は、前記エンドリング２２，２３
の軸方向端面に摺接して前記回転子軸１６のスラ
スト荷重を支え、このスラスト円板１８，１９の
外周に潤滑油環流用突条体２０，２１を径方向に
設けたものである。
In order to achieve the above objects, the present invention includes a stator frame 1 filled with lubricating oil, a stator core 2 fixed to the inner surface of the stator frame 1, and a stator core 2 inserted into each slot of the stator core 2. Stator winding group 3 and stator frame 1
A rotor shaft 16 disposed therein, a thrust bearing 15 rotatably supporting the rotor shaft 16, a rotor core 17 fixed to the rotor shaft 16, and thrust disks 18, 19, The thrust disks 18 and 19 are provided with end rings 22 and 23 provided on the child core 17.
The thrust disks 18 and 19 support the thrust load of the rotor shaft 16 by sliding on the axial end surfaces thereof, and lubricating oil circulation protrusions 20 and 21 are provided in the radial direction on the outer periphery of the thrust disks 18 and 19.
本発明において潤滑油はスラスト円板の外周に
設けられた突起によりスラスト円板の径方向にの
み送出され、巻線群を集中的に冷却する。
In the present invention, lubricating oil is sent out only in the radial direction of the thrust disk by the projections provided on the outer periphery of the thrust disk, thereby intensively cooling the winding group.
以下、本発明を図面に示す実施例に基づいて詳
細に説明する。
Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
第１図は本発明に係る潜水形電動機の一実施例
を示す一部破断正面図、第２図は巻線端部の拡大
斜視図である。これらの図において、１は固定子
枠、２は固定子枠１の内面に固定された固定子鉄
心、３は複数体の耐水電線を束ねてなる固定子巻
線群で、固定子鉄心２の各スロツトに挿入されて
いる。４は固定子巻線群３の巻線端部、５，６は
上記固定子枠１の両側開口部に固定された一対の
ブラケツトで、夫々内側に延びる軸受筒部７，８
を有している。９，１０は上記ブラケツト５，６
の内側に固定された先細円筒状のガイドで、その
各先端と巻線端部４の先端の間には隙間１１，１
２が設けられている。１３，１４は上記軸受筒部
７，８に嵌着されたスリーブ軸受で、その一方に
はスラスト軸受１５が形成されている。１６は上
記スリーブ１３，１４を介して支持された回転子
軸で、回転子鉄心１７と、一対のスラスト円板１
８，１９が固定されている。上記両スラスト軸受
１８，１９は前記スラスト軸受１５と共に回転子
軸１６のスラスト荷重を支えるもので、外周には
複数の突条体２０，２１が径方向に突設されてい
る。２２，２３はエンドリングで、このエンドリ
ング２２，２３は回転子鉄心１７に設けられてお
り、各スラスト軸受１８，１９の軸方向端面が摺
接されている。なお、固定子枠１内には、プロピ
レングリコールなどの潤滑液が封入されており、
これにより潜水形電動機を構成している。 FIG. 1 is a partially cutaway front view showing an embodiment of a submersible electric motor according to the present invention, and FIG. 2 is an enlarged perspective view of the winding end. In these figures, 1 is a stator frame, 2 is a stator core fixed to the inner surface of the stator frame 1, and 3 is a stator winding group formed by bundling a plurality of water-resistant electric wires. inserted into each slot. 4 is a winding end of the stator winding group 3; 5 and 6 are a pair of brackets fixed to both side openings of the stator frame 1, and bearing cylinder portions 7 and 8 extending inward, respectively.
have. 9 and 10 are the above brackets 5 and 6
is a tapered cylindrical guide fixed inside the wire, and there are gaps 11, 1 between each tip of the guide and the tip of the winding end 4.
2 is provided. Reference numerals 13 and 14 designate sleeve bearings fitted into the bearing cylinder portions 7 and 8, and a thrust bearing 15 is formed on one of the sleeve bearings. A rotor shaft 16 is supported via the sleeves 13 and 14, and includes a rotor core 17 and a pair of thrust disks 1.
8 and 19 are fixed. Both thrust bearings 18 and 19 support the thrust load of the rotor shaft 16 together with the thrust bearing 15, and have a plurality of protrusions 20 and 21 protruding in the radial direction on their outer peripheries. Reference numerals 22 and 23 indicate end rings, which are provided on the rotor core 17 and are in sliding contact with the axial end surfaces of the respective thrust bearings 18 and 19. Note that a lubricating liquid such as propylene glycol is sealed inside the stator frame 1.
This constitutes a submersible electric motor.
この発明は上記のようになされているので回転
子軸１６が回転すると、スラスト円板１８，１９
に設けた突条体２０，２１の作用により潤滑液が
矢印で示すようにスラスト軸受１８，１９の径方
向にのみ送出され、巻線端部４を構成している耐
水電線間を通つて循環する。したがつて、巻線端
部４を集中的に冷却する。 Since this invention is made as described above, when the rotor shaft 16 rotates, the thrust disks 18, 19
Due to the action of the protrusions 20 and 21 provided in the winding end portion 4, the lubricating fluid is sent out only in the radial direction of the thrust bearings 18 and 19 as shown by the arrows, and circulates between the water-resistant electric wires forming the winding end portion 4. do. Therefore, the winding end 4 is intensively cooled.
この発明は上記のように、スラスト円板の外周
に径方向に突設した突条体によつて潜水形電動機
内の潤滑液をスラスト円板の径方向に送出、循環
させ、固定子巻線の巻線端部の素線間を通つて環
流させるようにしているので、巻線端部を集中的
に冷却でき、巻線端部に対する冷却効果が著しく
向上するばかりでなく、潤滑油は軸方向には撹拌
されないので、流体抵抗を小さくでき、モータ効
率が著しく向上する。また、スラスト円板の外周
に突条体を形成しているので、回転子軸自体には
フアンを形成する必要がなく、回転子鉄心の製作
コスト、特に材料費を低減できる効果がある。
As described above, the present invention enables lubricating fluid within the submersible motor to be sent and circulated in the radial direction of the thrust disk by means of the protrusions provided in the radial direction on the outer periphery of the thrust disk. Since the flow is circulated between the strands at the end of the winding, the end of the winding can be centrally cooled, and the cooling effect on the end of the winding is significantly improved. Since there is no stirring in the same direction, fluid resistance can be reduced and motor efficiency can be significantly improved. Furthermore, since the protruding stripes are formed on the outer periphery of the thrust disk, there is no need to form a fan on the rotor shaft itself, which has the effect of reducing the manufacturing cost of the rotor core, particularly the material cost.
第１図はこの発明の一実施例の全体を示す部分
断面図、第２図は巻線端部の拡大斜視図である。
１……固定子枠、２……固定子鉄心、３……固
定子巻線、４……巻線端部、１５……スラスト軸
受、１６……回転子軸、１７……回転子鉄心、１
８，１９……スラスト円板、２０，２１……突条
体、２２，２３……エンドリング。
FIG. 1 is a partial sectional view showing an entire embodiment of the present invention, and FIG. 2 is an enlarged perspective view of the winding end. DESCRIPTION OF SYMBOLS 1... Stator frame, 2... Stator core, 3... Stator winding, 4... Winding end, 15... Thrust bearing, 16... Rotor shaft, 17... Rotor core, 1
8, 19... Thrust disk, 20, 21... Projection body, 22, 23... End ring.
Claims (1)
１の内面に固定された固定子鉄心２と、固定子鉄
心２の各スロツトに挿入された固定子巻線群３
と、固定子枠１内に配設された回転子軸１６と、
回転子軸１６を回転自在に軸支するスラスト軸受
１５と、回転子軸１６に固定された回転子鉄心１
７およびスラスト円板１８，１９と、回転子鉄心
１７に設けられたエンドリング２２，２３を備
え、前記スラスト円板１８，１９は、前記エンド
リング２２，２３の軸方向端面に摺接して前記回
転子軸１６のスラスト荷重を支え、このスラスト
円板１８，１９の外周に潤滑油環流用突条体２
０，２１を径方向に設けたことを特徴とする潜水
形電動機。1. A stator frame 1 filled with lubricating oil, a stator core 2 fixed to the inner surface of the stator frame 1, and a stator winding group 3 inserted into each slot of the stator core 2.
and a rotor shaft 16 disposed within the stator frame 1,
A thrust bearing 15 rotatably supports the rotor shaft 16, and a rotor core 1 fixed to the rotor shaft 16.
7 and thrust disks 18, 19, and end rings 22, 23 provided on the rotor core 17, the thrust disks 18, 19 are in sliding contact with the axial end surfaces of the end rings 22, 23, and the The thrust disks 18 and 19 support the thrust load of the rotor shaft 16, and are provided with protrusions 2 for lubricating oil circulation on the outer periphery of the thrust disks 18 and 19.
A submersible electric motor characterized in that 0 and 21 are provided in the radial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57038922A JPS58154362A (en) | 1982-03-09 | 1982-03-09 | Submergeable motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57038922A JPS58154362A (en) | 1982-03-09 | 1982-03-09 | Submergeable motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58154362A JPS58154362A (en) | 1983-09-13 |
| JPH0147102B2 true JPH0147102B2 (en) | 1989-10-12 |
Family
ID=12538711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57038922A Granted JPS58154362A (en) | 1982-03-09 | 1982-03-09 | Submergeable motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58154362A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1202561B (en) * | 1987-02-17 | 1989-02-09 | Ekochemie Srl | IMMERSED ELECTRIC MOTOR FOR DRIVING PUMPS AND SIMILAR |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5566246A (en) * | 1978-11-08 | 1980-05-19 | Mitsubishi Electric Corp | Submerged type motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS598430Y2 (en) * | 1978-11-07 | 1984-03-15 | 株式会社荏原製作所 | Cand motor |
-
1982
- 1982-03-09 JP JP57038922A patent/JPS58154362A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5566246A (en) * | 1978-11-08 | 1980-05-19 | Mitsubishi Electric Corp | Submerged type motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58154362A (en) | 1983-09-13 |
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