JPH07274457A - Squirrel-cage type rotor - Google Patents
Squirrel-cage type rotorInfo
- Publication number
- JPH07274457A JPH07274457A JP8546094A JP8546094A JPH07274457A JP H07274457 A JPH07274457 A JP H07274457A JP 8546094 A JP8546094 A JP 8546094A JP 8546094 A JP8546094 A JP 8546094A JP H07274457 A JPH07274457 A JP H07274457A
- Authority
- JP
- Japan
- Prior art keywords
- slots
- squirrel
- thin iron
- iron plate
- 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.)
- Pending
Links
Landscapes
- Induction Machinery (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電動機のかご形回転子に
関する。FIELD OF THE INVENTION The present invention relates to a squirrel-cage rotor for an electric motor.
【０００２】[0002]
【従来の技術】従来この種のかご形回転子を図３に基づ
き説明する。円形の薄鉄板１の外周に、図３に示すよう
に同一形状の複数個のスロット２と歯部３を均等割りに
設けてこれを積層し、スロット２内に導体と両端面にリ
ング状のエンドリングとをアルミニウムダイカストし、
かご形巻線を形成していた。2. Description of the Related Art A conventional cage rotor of this type will be described with reference to FIG. As shown in FIG. 3, a plurality of slots 2 and teeth 3 of the same shape are evenly provided on the outer periphery of a circular thin iron plate 1 and are laminated to form a conductor inside the slot 2 and ring-shaped on both end faces. Aluminum die casting of the end ring,
It formed a cage winding.
【０００３】[0003]
【発明が解決しようとする課題】ところが、かご形回転
子を有する電動機は、始動時および運転時に、固定子の
スロット数と回転子のスロット数との組合わせによる高
調波により振動や騒音が発生する課題があった。本発明
はこのような課題を解決するもので、スロットの間隔お
よび断面積を変化させることにより電動機の始動時およ
び運転時に振動や騒音が発生しない良好な特性を得るこ
とができ、効率の良い安価なかご形回転子を提供するこ
とを目的とするものである。However, an electric motor having a squirrel cage rotor generates vibrations and noises at the time of starting and running due to harmonics due to the combination of the number of slots of the stator and the number of slots of the rotor. There was a task to do. The present invention solves such a problem, and by changing the slot interval and the cross-sectional area, it is possible to obtain good characteristics in which vibration and noise do not occur at the time of starting and operating the electric motor, which is efficient and inexpensive. It is intended to provide a basket-shaped rotor.
【０００４】[0004]
【課題を解決するための手段】この課題を解決するため
に本発明は、円形の薄鉄板の外側にスロット高調波によ
る振動や騒音を低減させることを目的に円周上に不均等
にスロットを設けて複数の歯部の幅を除々に変化させて
形成し、また、円周上にスロットを不均等に設けること
による動的アンバランスを低減させるため、スロットの
断面積も除々に変化させて形成し、前記薄鉄板を前記ス
ロットを重ね合わすように積層してかご形回転子を構成
するので、電動機の始動時および運転時に振動や騒音が
発生しなくなり、また、運転効率が向上することとな
る。In order to solve this problem, the present invention provides slots on the circumference of a circular thin iron plate which are unevenly distributed on the circumference for the purpose of reducing vibration and noise due to slot harmonics. It is provided by gradually changing the width of the plurality of teeth, and in order to reduce the dynamic imbalance due to unevenly providing slots on the circumference, the cross-sectional area of the slots is also changed gradually. Since the cage rotor is formed by laminating the thin iron plates so that the slots are overlapped with each other, vibration and noise are not generated at the time of starting and operating the electric motor, and the operating efficiency is improved. Become.
【０００５】[0005]
【実施例】以下、本発明の一実施例を図１、図２に基づ
き説明する。図１に示すように、円形の薄鉄板１の外周
に複数の歯部３を設け、この歯部の幅を除々に変化させ
て、スロット間隔が除々に小さくなるように不均等にス
ロット２が形成されるように設けている。そして、この
薄鉄板１を前記スロットが重ね合うように積層してかご
形回転子を構成する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, a plurality of tooth portions 3 are provided on the outer periphery of a circular thin iron plate 1, and the widths of the tooth portions are gradually changed so that the slots 2 are unevenly distributed so that the slot intervals gradually become smaller. It is provided so as to be formed. Then, the thin iron plates 1 are laminated so that the slots are overlapped with each other to form a cage rotor.
【０００６】また、図２に示すように、円形の薄鉄板１
の外周に複数の歯部３を設け、この歯部の幅を除々に変
化させて、スロット間隔が除々に小さくなるように不均
等にスロット２を設けるとともに、このスロットの断面
積も除々に小さくなるように変化させて形成する。そし
て、この薄鉄板１を前記スロットが重ね合うように積層
してかご形回転子を構成する。上記のように、薄鉄板に
不均等にスロットを形成することにより、スロット高調
波を低減できるため、電動機の始動時および運転時にお
ける振動や騒音の発生を防止できる。また本発明のかご
形回転子の薄鉄板の形状は、上記で説明し、かつ図面に
示した実施例にのみに限定されるものではなく、その要
旨を逸脱しない範囲で種々変形して実施できるものであ
る。Further, as shown in FIG. 2, a circular thin iron plate 1
A plurality of tooth portions 3 are provided on the outer circumference of the tooth, and the widths of the tooth portions are gradually changed to provide the slots 2 unevenly so that the slot intervals are gradually reduced, and the cross-sectional area of the slots is also gradually reduced. It is formed by changing so that Then, the thin iron plates 1 are laminated so that the slots are overlapped with each other to form a cage rotor. As described above, by forming the slots in the thin iron plate unevenly, it is possible to reduce the slot harmonics, so that it is possible to prevent the generation of vibration and noise at the time of starting and operating the electric motor. Further, the shape of the thin iron plate of the squirrel cage rotor of the present invention is not limited to the embodiment described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention. It is a thing.
【０００７】[0007]
【発明の効果】以上の実施例の説明から明らかなように
本発明によれば、かご形回転子を構成する薄鉄板にスロ
ットを不均等にそしてスロットの断面積を変化させて設
けることにより、電動機の始動時および運転時に振動や
騒音が発生しない良好な特性となる効果が得られる。As is apparent from the above description of the embodiments of the present invention, according to the present invention, the thin iron plate forming the cage rotor is provided with the slots unevenly and the cross-sectional areas of the slots are changed. It is possible to obtain the effect of providing good characteristics that vibration and noise do not occur at the time of starting and operating the electric motor.
【図１】本発明の一実施例のかご形回転子を構成する薄
鉄板の平面図である。FIG. 1 is a plan view of a thin iron plate constituting a squirrel cage rotor according to an embodiment of the present invention.
【図２】本発明の他の実施例のかご形回転子を構成する
薄鉄板の平面図である。FIG. 2 is a plan view of a thin iron plate forming a cage rotor according to another embodiment of the present invention.
【図３】従来のかご形回転子を構成する薄鉄板の平面図
である。FIG. 3 is a plan view of a thin iron plate forming a conventional squirrel cage rotor.
１ 薄鉄板 ２ スロツト ３ 歯部 1 Thin iron plate 2 Slot 3 Teeth
Claims (2)
し、このスロットを合わせるように前記薄鉄板を積層
し、このスロットに二次導体を鋳造して回転子を構成し
た電動機において、前記スロットの位置を円周上に不均
等に設けることを特徴とするかご形回転子。1. A motor in which a slot is formed on the outer periphery of a circular thin iron plate, the thin iron plates are laminated so that the slots are aligned, and a secondary conductor is cast into the slot to form a rotor. A squirrel-cage rotor characterized in that the positions of are arranged unevenly on the circumference.
１記載のかご形回転子。2. The squirrel cage rotor according to claim 1, wherein the squirrel cage rotor is provided with slots having different cross-sectional areas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8546094A JPH07274457A (en) | 1994-03-30 | 1994-03-30 | Squirrel-cage type rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8546094A JPH07274457A (en) | 1994-03-30 | 1994-03-30 | Squirrel-cage type rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07274457A true JPH07274457A (en) | 1995-10-20 |
Family
ID=13859500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8546094A Pending JPH07274457A (en) | 1994-03-30 | 1994-03-30 | Squirrel-cage type rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07274457A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011166865A (en) * | 2010-02-05 | 2011-08-25 | Mitsubishi Electric Corp | Single-phase induction motor and enclosed compressor |
| JP2011188703A (en) * | 2010-03-11 | 2011-09-22 | Mitsubishi Electric Corp | Single-phase induction motor and sealed compressor |
| WO2015029529A1 (en) * | 2013-09-02 | 2015-03-05 | 三菱電機株式会社 | Squirrel-cage rotor and squirrel-cage rotor manufacturing method |
| CN109067033A (en) * | 2018-08-27 | 2018-12-21 | 珠海格力电器股份有限公司 | Rotor assembly and motor |
-
1994
- 1994-03-30 JP JP8546094A patent/JPH07274457A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011166865A (en) * | 2010-02-05 | 2011-08-25 | Mitsubishi Electric Corp | Single-phase induction motor and enclosed compressor |
| JP2011188703A (en) * | 2010-03-11 | 2011-09-22 | Mitsubishi Electric Corp | Single-phase induction motor and sealed compressor |
| WO2015029529A1 (en) * | 2013-09-02 | 2015-03-05 | 三菱電機株式会社 | Squirrel-cage rotor and squirrel-cage rotor manufacturing method |
| CN105493387A (en) * | 2013-09-02 | 2016-04-13 | 三菱电机株式会社 | Squirrel-cage rotor and squirrel-cage rotor manufacturing method |
| JP5959751B2 (en) * | 2013-09-02 | 2016-08-02 | 三菱電機株式会社 | Cage type rotor and method of manufacturing cage type rotor |
| US10003244B2 (en) | 2013-09-02 | 2018-06-19 | Mitsubishi Electric Corporation | Squirrel-cage rotor and method for manufacturing squirrel-cage rotor |
| CN109067033A (en) * | 2018-08-27 | 2018-12-21 | 珠海格力电器股份有限公司 | Rotor assembly and motor |
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