JPS58165640A - Laminated core of rotary electric machine - Google Patents
Laminated core of rotary electric machineInfo
- Publication number
- JPS58165640A JPS58165640A JP4734082A JP4734082A JPS58165640A JP S58165640 A JPS58165640 A JP S58165640A JP 4734082 A JP4734082 A JP 4734082A JP 4734082 A JP4734082 A JP 4734082A JP S58165640 A JPS58165640 A JP S58165640A
- Authority
- JP
- Japan
- Prior art keywords
- duct
- core
- punched steel
- electric machine
- protrusion
- 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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000009423 ventilation Methods 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 238000003475 lamination Methods 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract description 3
- 238000005097 cold rolling Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 239000011229 interlayer Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 241000345998 Calamus manan Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000012950 rattan cane Nutrition 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は回転電機の固定子や回転子に係り、特にラジア
ル通風ダクトを有する積層鉄心の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a stator and a rotor of a rotating electric machine, and more particularly to an improvement of a laminated iron core having a radial ventilation duct.
近年回転［８１の大容量化に伴いその固定子や回転子の
積層鉄心も大ＩＩＷ化、長積籐化が要望されるようにな
ってきた。特に水車発電機やタービン脅電機などの大形
回転電機は、固定子鉄心の積層面が良く１揃い波打ちが
なくしかも積層作業性の良いものが要求される。通常こ
れら積層鉄心には軸方間に幾つかのラジアル通風ダクト
を設けて巻線および鉄心の冷却をしている。従来このラ
ジアル通風ダクトは打抜鋼板に！形、Ｕ形あるいは角棒
などのダクトピースをスポット溶接やアーク溶接で固着
したものを所望の間隔にて積層することによって形成し
ている。そしてそのダクト巾は普通１０〜１３■であり
ピッチは６０〜７０■が採用されている。In recent years, as the capacity of rotating machines has increased, there has been a demand for larger IIW and longer rattan laminated cores for stators and rotors. In particular, large rotating electric machines such as water turbine generators and turbine generators are required to have stator cores with good lamination surfaces, no corrugations, and good lamination workability. Usually, these laminated cores are provided with several radial ventilation ducts in the axial direction to cool the windings and the core. Conventionally, this radial ventilation duct was made of stamped steel plate! It is formed by laminating duct pieces in the shape of a U-shape, a square bar, etc., fixed by spot welding or arc welding, at a desired interval. The duct width is usually 10 to 13 square meters, and the pitch is 60 to 70 square meters.
このような従来技術による積層鉄心には以下に述べるよ
うな欠点がある。即ち、打抜鋼板にダクトピースを溶接
するので、その熱により打抜銅板が波打ち変形を起し積
層鉄心の締りを悪＜Ｌ”（振動や層間短絡の原因となる
こと。溶接スパッタの除去に多大の仕上時間を要し、し
かも完全に除去することが困−であること。更には残留
スパツタが鉄心の層間絶縁を破壊し層間短絡を誘発する
おそれのあることなどである。Such conventional laminated cores have the following drawbacks. In other words, since the duct piece is welded to the punched steel plate, the heat causes the punched copper plate to wave and deform, making the laminated iron core less tight (causing vibration and interlayer short circuits).To remove welding spatter. It takes a lot of finishing time and is difficult to completely remove.Furthermore, the remaining spatter may destroy the interlayer insulation of the iron core and cause an interlayer short circuit.
又回転電機の冷却効率を向上させるために、ダクト中を
４〜８ｍとなしピッチも３０〜４９ｓｓとして従来のも
のよりダクト数を増大するものは、打抜鋼板に溶接する
ダクトピースの個数が激増するのでその作業時間が増大
して作業能率が悪化する上に、波打ち変形によりダクト
中が狭くなり所望の冷却効果が得られないという欠点が
あった。In addition, in order to improve the cooling efficiency of rotating electric machines, the duct length is 4 to 8 m, and the pitch is 30 to 49 ss, which increases the number of ducts compared to conventional ones.The number of duct pieces welded to the punched steel plate increases dramatically. As a result, the working time increases and working efficiency deteriorates, and the inside of the duct becomes narrow due to the undulating deformation, making it impossible to obtain the desired cooling effect.
本発明は上述の諸問題に鑑み、締付性がよく、しかも作
業効率の高い回転電機の積層鉄心を提供することを目的
とする。In view of the above-mentioned problems, it is an object of the present invention to provide a laminated core for a rotating electrical machine that has good tightening properties and high working efficiency.
本発明は積層鉄心のラジアル通風ダクトな打抜鋼板に絞
り成形した突起部により形成したことを特徴としたもの
である。The present invention is characterized in that the radial ventilation duct of the laminated iron core is formed by a protrusion formed by drawing on a punched steel plate.
以下本発明の一実施例を図面を参照し℃説明する。第１
図は固定子鉄心の通風ダクト用打抜鋼板の一部分を示し
た平面図である。この打抜鋼＠１の内周側には巻線を収
納するスロット２が同方向ａ；等間隔に設けられている
。そしてこの歯部３とスロット２の背部には頂部が平面
の円筒状である突起部４が形成されている。この突起部
４は絞り警と一般に使用されている絞りプレスを用いて
冷間加工により形成されたものである。突起部４の配役
は鋼板の大きさによって適切な位置を選定するが、１８
１図に示したように従来技術によるダクトピースの位置
に配設されるべきである。An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure is a plan view showing a portion of a punched steel plate for ventilation ducts of the stator core. Slots 2 for accommodating winding wires are provided on the inner peripheral side of this punched steel @1 at equal intervals in the same direction a. A protrusion 4 having a cylindrical shape with a flat top is formed on the back of the tooth 3 and the slot 2. This protrusion 4 is formed by cold working using a drawing machine and a commonly used drawing press. Appropriate positions for the projections 4 are selected depending on the size of the steel plate, but 18
It should be placed in the position of the duct piece according to the prior art as shown in FIG.
第２図は−この突起部４の断面図である。通風ダクト用
打抜鋼板は通常板隊が０，５〜０．８箇である。FIG. 2 is a sectional view of this protrusion 4. Punched steel plates for ventilation ducts usually have 0.5 to 0.8 plates.
そして材料は８ＰＣＣｖＩあるいは５−１８電気鉄板な
どが使用される。このような鋼板においては突起部４の
直径りは６諺、突起高さＴは４ｗｍが最適な寸法である
。The material used is 8PCCvI or 5-18 electric iron plate. In such a steel plate, the optimum dimensions are that the diameter of the protrusion 4 is 6mm and the protrusion height T is 4wm.
第３図は上記の通風ダクト用打抜銅板ｌを用いた積層鉄
心を内周側から見た正面図である。符号 ６で示し
たものがダクト部以外に使用される基本の打抜鋼板であ
る。この打抜鋼板５を積み重ねながら所望のピッチで通
風ダクト用打抜鋼板ｌを介在させて通風ダクト６を形成
する従来と全く同じ作業工程により鉄心を製造する。FIG. 3 is a front view of a laminated iron core using the above-mentioned punched copper plate 1 for ventilation ducts, viewed from the inner peripheral side. The reference numeral 6 is the basic punched steel plate used for parts other than the duct part. The iron core is manufactured by the same process as the conventional method, in which the punched steel plates 5 are stacked and punched steel plates 1 for ventilation ducts are interposed at a desired pitch to form the ventilation duct 6.
上記実施例においては鉄心の通風ダクト中を６■となし
積厚方向のダクト数を増大させたものであるが、通風ダ
クト中を１２−に形成したい場合は１８４図に示したよ
うにダクト６の両側に通風ダクト用打抜［ｉＦｌを突起
部４が対向するように積み重ねればよい。In the above embodiment, the number of ducts in the ventilation duct in the iron core is 6-inch, increasing the number of ducts in the stacking thickness direction, but if you want to form the ventilation duct in 12-inch, as shown in Fig. The ventilation duct punchings [iFl] may be stacked on both sides of the sheet so that the protrusions 4 face each other.
なお、鉄心の締付圧力が通常の範囲であればこの突起部
４の機械的強度は十分である実験結果を得ているが１例
えば回転電機が２極機、あるいは振動抑制のため特別に
鉄心の締付圧力を強くするような場合は突起部４の内部
Ｃ二耐熱性の樹脂あるいはアルミニウム材などの低隔点
金−を充填すれば突起部４の強度が増大し十分その圧力
に耐えることができる。Experiments have shown that the mechanical strength of this protrusion 4 is sufficient if the clamping pressure of the iron core is within the normal range. If the tightening pressure is to be increased, the strength of the protrusion 4 will be increased by filling the inside of the protrusion 4 with heat-resistant resin or low-distance metal such as aluminum material, so that the protrusion 4 can withstand the pressure sufficiently. I can do it.
次に作用を説明する。上記のように構成された回転電機
の積層鉄心はそのラジアル通風ダクト６を形成するため
に打抜鋼板１に絞り成形で突起部４を設けているので従
来技術で施工していたダクトピースの溶接作業がなくな
りその溶接にまつわる欠点をすべて解消することができ
る。その最も有益なことは溶接熱による打抜鋼板ｌの波
打ちがなくなり積層面のよく揃った締りの良い積層鉄心
を得ることができることである。Next, the action will be explained. The laminated iron core of the rotating electric machine configured as described above has the protrusion 4 formed by drawing on the punched steel plate 1 to form the radial ventilation duct 6, so welding of the duct piece, which had been done using conventional techniques, is unnecessary. This eliminates the work and eliminates all the drawbacks associated with welding. The most beneficial thing is that the waving of the punched steel plate l due to welding heat is eliminated, and a well-tight laminated core with well-aligned laminated surfaces can be obtained.
四に打抜鋼板を製造する工程において、打抜プレス工程
に引続き連続的に突起部４の絞りプレス工程を施工する
ことができるので作業能率を向上させるに極めて有効で
ある。Fourth, in the process of manufacturing a punched steel plate, the process of drawing and pressing the protrusions 4 can be carried out continuously following the process of punching and pressing, which is extremely effective in improving work efficiency.
又通風冷却についてみると、従来のダクトピースに相当
する部分が鋼板と一体的に形成された突起部４になるの
で、この突起部４は鉄心に一体形成された冷却フィンの
役目を果し鉄心の冷却効率を一層向上することができる
。Regarding ventilation cooling, the part corresponding to the conventional duct piece is a protrusion 4 that is integrally formed with the steel plate, so this protrusion 4 serves as a cooling fin that is integrally formed with the iron core. cooling efficiency can be further improved.
一方回転子鉄心においては突起部４が一体成形であるか
ら従来のダクトピースが溶接部の破損により遠心力で飛
び出すようなことがなくなり信頼性を向上させることが
できる。On the other hand, in the rotor core, since the projections 4 are integrally molded, the conventional duct piece does not fly out due to centrifugal force due to breakage of the welded part, and reliability can be improved.
以上説明したように、本発明によればダクト用打抜鋼板
に絞り成形した突起部を設けて、この鋼板を用いて通風
ダクトを形成した積層鉄心としたので、締付性がよくな
り信頼性が向上すると共に作業効朧の高い回転電機の積
層鉄心を提供することができる。As explained above, according to the present invention, a punched steel plate for a duct is provided with a drawn protrusion, and this steel plate is used to form a laminated core in which a ventilation duct is formed, resulting in improved tightening performance and reliability. It is possible to provide a laminated core for a rotating electric machine that has improved work efficiency and high work efficiency.
＠１図は本発明の一実施例による固定子鉄心の通風ダク
ト用打抜−６板の一部分を示した平面図、第２図は第１
図の１−’ １線に沿った突起部の断面図、第３図は同
じく積層鉄心の正面図、第４図は本発明の変形例を示す
積層鉄心の正面図である。
１・・・通風ダクト用打抜鋼板゛、
２・・・スロット、 ４・・・突起部、５・・・
打抜鋼板、 ６・・・通風ダクト。
（７３１７）代理人 弁理士 則 近 憲 佑（ほか１
名）
第１図
第２図@ Figure 1 is a plan view showing a part of the punched plate 6 for the ventilation duct of the stator core according to an embodiment of the present invention, and Figure 2 is the
3 is a front view of the laminated core, and FIG. 4 is a front view of the laminated core showing a modification of the present invention. 1...Punched steel plate for ventilation duct'', 2...Slot, 4...Protrusion, 5...
Punched steel plate, 6... Ventilation duct. (7317) Agent Patent Attorney Noriyuki Chika (and 1 others)
Figure 1 Figure 2
Claims (2)
に構成した鉄心の内部にラジアル通風ダクトを備えた回
転電機の積層鉄心において、前記ラジアル通風ダクＦを
、このダクトに接す石打抜鋼板に絞り成形した複数筒の
突起部により形成したことを特徴とする回転電機の積層
鉄心。(1) In a laminated core for a rotating electric machine, which has a radial ventilation duct inside the core, which is formed into a cylindrical shape by stacking punched steel plates having slots, the radial ventilation duct F is connected to a stone punched steel plate in contact with the duct. A laminated iron core for a rotating electric machine, characterized in that it is formed by a plurality of cylindrical protrusions drawn and formed.
特徴とする特許請求の範Ｉ８第１項記載の回転電気の積
層鉄心。(2) A laminated iron core for rotating electricity according to claim I8, wherein the protrusion has a cylindrical shape with a flat top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4734082A JPS58165640A (en) | 1982-03-26 | 1982-03-26 | Laminated core of rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4734082A JPS58165640A (en) | 1982-03-26 | 1982-03-26 | Laminated core of rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58165640A true JPS58165640A (en) | 1983-09-30 |
Family
ID=12772451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4734082A Pending JPS58165640A (en) | 1982-03-26 | 1982-03-26 | Laminated core of rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58165640A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6177648U (en) * | 1984-10-29 | 1986-05-24 | ||
| JPS6192152U (en) * | 1984-11-22 | 1986-06-14 | ||
| GB2419475A (en) * | 2004-10-22 | 2006-04-26 | Newage Int Ltd | Laminated structure of an electric machine with cooling fluid flow paths |
| DE102007000636A1 (en) * | 2007-11-07 | 2009-05-14 | Alstom Technology Ltd. | Rotor for electrodynamic machine i.e. hydro generator, has spacing webs that are supported on rim bolts extending through sheet metal member of rotor in axial direction in order to absorb centrifugal forces that are applied to spacing webs |
| US7728468B2 (en) * | 2004-10-28 | 2010-06-01 | Siemens Aktiengesellschaft | Laminations with integrated spacing feature for an electric machine, and method of making a lamination |
| US7893577B2 (en) | 2007-03-30 | 2011-02-22 | Alstom Technology Ltd | Rotor for an electrodynamic machine |
| US20120104982A1 (en) * | 2010-11-03 | 2012-05-03 | Krishnan Ramu | ROTOR LAMINATION SHAPING FOR MINIMUM CORE LOSS IN SRMs |
| CN103746481A (en) * | 2014-01-20 | 2014-04-23 | 东方电气集团东方电机有限公司 | Ventilating duct structure of stator core |
| CN104882976A (en) * | 2015-07-06 | 2015-09-02 | 永济新时速电机电器有限责任公司 | Novel heat-dissipation completely-closed traction motor |
-
1982
- 1982-03-26 JP JP4734082A patent/JPS58165640A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6177648U (en) * | 1984-10-29 | 1986-05-24 | ||
| JPS6192152U (en) * | 1984-11-22 | 1986-06-14 | ||
| JPH028520Y2 (en) * | 1984-11-22 | 1990-02-28 | ||
| GB2419475A (en) * | 2004-10-22 | 2006-04-26 | Newage Int Ltd | Laminated structure of an electric machine with cooling fluid flow paths |
| US7728468B2 (en) * | 2004-10-28 | 2010-06-01 | Siemens Aktiengesellschaft | Laminations with integrated spacing feature for an electric machine, and method of making a lamination |
| US7893577B2 (en) | 2007-03-30 | 2011-02-22 | Alstom Technology Ltd | Rotor for an electrodynamic machine |
| DE102007000636A1 (en) * | 2007-11-07 | 2009-05-14 | Alstom Technology Ltd. | Rotor for electrodynamic machine i.e. hydro generator, has spacing webs that are supported on rim bolts extending through sheet metal member of rotor in axial direction in order to absorb centrifugal forces that are applied to spacing webs |
| US20120104982A1 (en) * | 2010-11-03 | 2012-05-03 | Krishnan Ramu | ROTOR LAMINATION SHAPING FOR MINIMUM CORE LOSS IN SRMs |
| US8952591B2 (en) * | 2010-11-03 | 2015-02-10 | Regal Beloit America, Inc. | Rotor lamination shaping for minimum core loss in SRMs |
| US9054567B2 (en) | 2010-11-03 | 2015-06-09 | Regal Beloit America, Inc. | High power density SRMs |
| US9312733B2 (en) | 2010-11-03 | 2016-04-12 | Regal Beloit America, Inc. | High power density SRM |
| CN103746481A (en) * | 2014-01-20 | 2014-04-23 | 东方电气集团东方电机有限公司 | Ventilating duct structure of stator core |
| CN104882976A (en) * | 2015-07-06 | 2015-09-02 | 永济新时速电机电器有限责任公司 | Novel heat-dissipation completely-closed traction motor |
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