JPH03289339A - Rotor for induction motor - Google Patents

Abstract

PURPOSE:To produce a rotor for an induction motor efficiently with low cost by arranging two rotor core sections, formed by laminating steel boards having a plurality of holes, axially with an arbitrary interval and then integrally subjecting to aluminum casting such that the plurality of holes in the opposing rotor core sections communicate to one another. CONSTITUTION:Rotor core sections 2, 3, formed by laminatiug magnetic steel boards, are mounted on a rotor shaft 4 with an arbitrary interval. A resistive member, communicating between the rotor core sections 2, 3, into which a rotor conductor 6 is formed through aluminum casting and a plurality of conductors 15 coupled through the resistive member 9 are arranged between the rotor core sections 2, 3. Recesses 16, covering holes made in the steel boards at the rotor core sections 2, 3, are provided at the opposite ends of the conductor 15 and one of the holes is covered. A protrusion 17 provided in the recess 16 is melted at the aluminum casting temperature of the conductor 15 and the resistive member 9 thus producing a rotor where the rotor core sections 2, 3 are integrated with the conductor 15.

Description

【発明の詳細な説明】[Detailed description of the invention]

［０００１］ [0001]

【産業上の利用分野】[Industrial application field]

本発明は複数固定子誘導電動機の複数回転子コアを有す
る一体的回転子に関するものであり、より詳しくは単一
の回転子、複数個の固定子及び移相装置を有し、移相装
置を調節することにより回転子の回転速度及び発生トル
クを任意に変化させることができる複数固定子誘導電動
機の回転子に関する。 ［０００２］The present invention relates to a unitary rotor having multiple rotor cores for a multiple stator induction motor, and more particularly to a unitary rotor having a single rotor, multiple stators, and a phase shifter. The present invention relates to a rotor for a multi-stator induction motor in which the rotational speed and generated torque of the rotor can be arbitrarily changed by adjustment. [0002]

【従来の技術】[Conventional technology]

この種の誘導電動機、より詳しくは複数の回転子コアを
有する単一の回転子と複数の固定子及び移相装置とを有
し、移相装置を調節することで、高速域から低速域の広
範囲に亘すスムーズな変速が可能で、広範囲に亘り高ト
ルクを発生させることのできる電動機の回転子は、複数
の回転子コアを有しながらも回転子コア間にそれぞれの
回転子コアの回転子導体を接続する複数の導体を設ける
必要があるため、誘導電動機の回転子の形成に最も簡単
な方法である鋳込みによる回転子導体や短絡環の形成が
難しく、よって従来技術に複数固定子誘導電動機の作用
、効果の開示はあるもののそのための具体的な回転子の
形成に関する開示はない。 ［０００３］This type of induction motor, more specifically, has a single rotor with multiple rotor cores, multiple stators, and a phase shift device, and by adjusting the phase shift device, it can change from a high speed range to a low speed range. The rotor of an electric motor, which is capable of smooth speed changes over a wide range and can generate high torque over a wide range, has multiple rotor cores, but the rotation of each rotor core is controlled between the rotor cores. Because it is necessary to provide multiple conductors to connect the child conductors, it is difficult to form rotor conductors and short-circuit rings by casting, which is the simplest method for forming the rotor of an induction motor. Although the operation and effects of the electric motor are disclosed, there is no disclosure regarding the specific formation of a rotor therefor. [0003]

【発明が解決しようとする課題】[Problem to be solved by the invention]

複数固定子誘導電動機に使用される回転子は一般的に回
転子コア部が任意間隔を有して同軸上に配設されること
及び、前記任意間隔に、鋳込みで形成する回転子コア部
の回転子導体を連通状に連絡する連結した複数個の導体
を設ける構成から、回転子コア部の回転子導体と、前記
任意間隔に連結した複数個の導体とを同時に鋳込みで形
成することは難しく、アルミニウムの鋳込みで回転子を
一体的に能率良く低コストで生産することができず、複
数固定子誘導電動機の実用化を困難としていた。 ［０００４］ 本発明は上記従来技術に開示されない複数固定子誘導電
動機の回転子に関し、一般の誘導電動機の回転子の形成
と同様に回転子コアの鋳込みにより一体的に形成可能に
し、機械強度が高くコスト面で安価に複数個の回転子コ
アを有する回転子を提供するものである。 ［０００５］ なお、本発明の複数固定子誘導電動機は、単相または三
相電源等に接続して使用され、回転子の形態は、普通か
ご形、二重かご形、深溝かご形、特殊かご形のいずれの
形式のものにも適用できるものである。 ［０００６］A rotor used in a multi-stator induction motor generally has rotor core parts disposed coaxially at arbitrary intervals, and rotor core parts formed by casting at the arbitrary intervals. Because of the configuration in which a plurality of connected conductors are provided to connect the rotor conductors in a continuous manner, it is difficult to simultaneously form the rotor conductor of the rotor core portion and the plurality of conductors connected at arbitrary intervals by casting. However, it was not possible to manufacture the rotor integrally and efficiently at low cost by casting aluminum, making it difficult to put a multi-stator induction motor into practical use. [0004] The present invention relates to a rotor for a multi-stator induction motor, which is not disclosed in the above-mentioned prior art, by making it possible to integrally form the rotor core by casting the rotor core in the same way as the rotor of a general induction motor, and by improving the mechanical strength. The present invention provides a rotor having a plurality of rotor cores at low cost. [0005] The multiple stator induction motor of the present invention is used by being connected to a single-phase or three-phase power supply, and the rotor can be of any of ordinary squirrel cage type, double cage type, deep groove cage type, and special cage type. It can be applied to any type of shape. [0006]

【課題を解決するための手段】[Means to solve the problem]

本発明は複数個の孔を開設した鋼板を積層して形成した
２個の回転子コア部を任意間隔を設けて同軸上に配設し
、前記任意間隔において、それぞれ対向する回転子コア
部の複数個の孔を、それぞれ連通するよう、アルミニウ
ムまたはアルミニウム合金の鋳込で一体的に形成した複
数個の導体と該複数個の導体を連結した抵抗材とを設け
、更に前記複数個の孔にアルミニウムまたはアルミニウ
ム合金を鋳込んで形成したことにより前記課題を解決す
るための手段とした。 ［０００７］ また前記アルミニウムまたはアルミニウム合金で一体的
に形成した複数個の導体のそれぞれの両端に前記鋳込み
時に少なくとも回転子コア部の孔１つを覆う凹部を設け
ると共に該凹部内に少なくとも１つの突起を設けたこと
により前記課題を解決するための手段とした。 ［０００８］In the present invention, two rotor core parts formed by stacking steel plates with a plurality of holes are disposed on the same axis at an arbitrary interval, and at the arbitrary interval, two rotor core parts facing each other are arranged on the same axis. A plurality of conductors integrally formed by casting aluminum or aluminum alloy and a resistance material connecting the plurality of conductors are provided so that the plurality of holes communicate with each other; A means for solving the above problem was formed by casting aluminum or an aluminum alloy. [0007] Furthermore, a recess is provided at both ends of each of the plurality of conductors integrally formed of aluminum or aluminum alloy to cover at least one hole in the rotor core portion during the casting, and at least one protrusion is provided in the recess. This is a means to solve the above problem. [0008]

【作　用】[For use]

本発明に係る複数固定子誘導電動機の回転子は、アルミ
ニウムまたはアルミニウム合金の鋳込みで形成した複数
個の連結した導体を、任意間隔を設けて同軸上に配設し
た２個の回転子コア部の前記任意間隔に設けて、対向す
る回転子コア部の複数個の孔をそれぞれ連通するように
構成すると共に、前記鋳込み時に複数個の導体の両端に
少なくとも１つの孔を覆う凹部と該凹部内に少なくとも
１つの突起を設けたので、回転子コア部の孔にアルミニ
ウムまたはアルミニウム合金を鋳込むと、回転子コア部
には回転子導体とその短絡環とを形成し、且つ回転子コ
ア部の孔が対向する任意間隔側では、回転子コア部に鋳
込んだアルミニウムが複数個の連結した導体の両端に設
けた凹部に流れ込むと共に凹部内の突起と溶着して回転
子コア部と複数個の導体とは一体的回転子に形成される
。つまり２個の回転子コア部と複数個の連結した導体と
を同軸上に配設し回転子コアの孔にアルミニウムを鋳込
むという容易な工程で、回転子コア部の孔に形成される
回転子導体と複数個の導体は連通状に形成され、複数個
の導体の凹部と該凹部内の突起により回転子コア部と複
数個の連結した導体は固着される。 ［０００９］ Ｉ実施例】 本発明は主としてかご形回転子をもつ二固定子誘導電動
機として詳細を説明するが、これに限定されないことは
言うまでもない。また、固定子巻線の結線方法等は必要
とする特性に応じるものとしその詳細は省くものとする
。更に回転子コア部間の構成も空間、非磁性体、磁性体
等を使用する場合がある。 ［００１０］ すでに本出願人は、特願昭６１−１２８３１４号として
本発明の構成の一部である複数固定子からなる誘導電動
機の構成、作用の詳細な説明を行っている。 ［００１１］ 図１により２固定子誘導電動機の構成を説明する。符号
１は本発明に係る２固定子誘導電動機であり、該誘導電
動機１は以下のような構成を有する。磁性材料からなる
鋼板を積層して形成した回転子コア部２．３を任意の間
隔を設けて回転子軸４に装着しである。回転子コア部２
，３間はこの場合空間とし、回転子コア部２，３に、後
のアルミニウムの鋳込みで形成する回転子導体６のそれ
ぞれを、回転子コア部２，３に連通ずるよう抵抗材９と
該抵抗材９で連結した複数個の導体１５とを設け、更に
その直列に連通ずるようにした複数個の回転子導体６と
その外端部に短絡環８，８とを鋳込みにより形成しであ
る。 ［００１２］ 回転子コア部２．３に対峙する外側部に巻線１０．１１
を施した第１固定子１２と第２固定子１３を機枠１４に
固定しである。 ［００１３］ 次に本発明の一実施例を図２と図３および図４により説
明する。図２に抵抗材９で連結した複数個の導体１５の
側断面図を示す。 ［００１４］ 導体１５の両端には凹部１６を設けてあり、この凹部内
は回転子コア部２．３の鋼板に開設した孔を覆う大きさ
に形成され、孔の一方を塞ぐものである。また前記凹部
内には突起１７を設けである。 ［００１５］ 図３に抵抗材９で連結した複数個の導体１５の側面図を
示す。この導体１５は回転子コア部２，３間において対
向する前記各コア部の孔をそれぞれ連通するものとなり
、その外周において抵抗材９で連結されている。 ［００１６］ 前記凹部１６の大きさは前述のように回転子コア部の孔
を少なくとも１つを覆うものであり場合によって２つの
孔を１つの凹部で覆う大きさにすることもありよって導
体１５もそれぞれに応じて形状も変化する。 ［００１７］ 突部１７を２つ設けた例を示しているが、１つの場合も
あり、その形状も丸形など光測に限定されない。更に、
抵抗材９の形状も光列に限定されることなく、ファン形
状にして別の効果を持たせる場合もある。 ［００１８］ ところで、抵抗材９と導体１５とは、アルミニウムまた
はアルミニウム合金で鋳込み、抵抗材９と導体１５とを
同時に一体的に形成すると最も簡便であり、後の回転子
コア部の鋳込みと同時に一体的回転子に形成する場合好
都合となる。 ［００１９］ 以上の構成における回転子７を図４により更に説明する
。まず、回転子コア部２．３は従来の鋼板の積層であり
、積層したものの個数が２個であること以外−般の誘導
電動機のコアと変わりはない。次に導体１５と抵抗材９
とはアルミニウムまたはアルミニウム合金の鋳込みによ
り同時に形成するものであり、余分な抵抗材９と導体１
５との固着工程を設けることもなく簡単に形成できる。 前記形成された回転子コア部２，３と導体１５とは回転
子細上又は鋳込みのマンドレル１８上に配設される。つ
まり回転子コア部２，３はマンドレルに任意間隔を有し
て配設され、前記任意間隔には鋳込みで同時に形成した
抵抗材９と導体１５とを設けである。説明の都合上鋳型
は図面から省略するが、回転子の左右１９．２０よりア
ルミニウムまたはアルミニウム合金を鋳込むことで、左
右に短絡環８と、左右に連通する回転子導体６とを形成
し一体的回転子が一般の誘導電動機と同様の手法で形成
できる。この鋳込みの際、前記導体１５の凹部内の突起
１７は鋳込み材が凹部内１６に圧入されると鋳込み材の
温度で融解し、冷却後には回転子コア部２，３に形成さ
れる回転子導体と導体１５は凹部１６の突起１７の融解
により固着されると共に回転子コア部２．３に連通ずる
回転子導体が形成される。更に回転子コア部２．３と導
体１５とは構造上一体的な回転子とすることができる。 ［００２０］ ところで突起１７と鋳込み材との固着をより確実にする
ため、鋳込みの後に、突部１７部分だけを局部的に加熱
する手段、たとえば、レーザー、プラズマなどの溶接手
段を用いることもある。 ［００２１］The rotor of the multi-stator induction motor according to the present invention consists of two rotor core parts in which a plurality of connected conductors formed by casting aluminum or aluminum alloy are coaxially arranged at arbitrary intervals. The plurality of holes in the rotor core portions facing each other are formed at arbitrary intervals and configured to communicate with each other, and at the time of casting, a recess covering at least one hole is provided at both ends of the plurality of conductors, and a recess is formed in the recess. Since at least one protrusion is provided, when aluminum or aluminum alloy is cast into the hole in the rotor core, the rotor conductor and its short-circuit ring are formed in the rotor core, and On the arbitrarily spaced side facing the rotor core, the aluminum cast into the rotor core flows into the recesses provided at both ends of the plurality of connected conductors, and welds to the protrusions in the recesses, forming the rotor core and the plurality of conductors. is formed into an integral rotor. In other words, it is a simple process of arranging two rotor cores and a plurality of connected conductors on the same axis and casting aluminum into the holes in the rotor core. The child conductor and the plurality of conductors are formed in a continuous manner, and the rotor core portion and the plurality of connected conductors are fixed by the recesses of the plurality of conductors and the projections in the recesses. [0009] Embodiment The present invention will mainly be described in detail as a two-stator induction motor having a squirrel cage rotor, but it goes without saying that the present invention is not limited thereto. Furthermore, the method of connecting the stator windings, etc. will depend on the required characteristics, and the details will be omitted. Furthermore, the structure between the rotor core parts may also use spaces, non-magnetic materials, magnetic materials, etc. [0010] The present applicant has already provided a detailed explanation of the structure and operation of an induction motor comprising a plurality of stators, which is a part of the structure of the present invention, in Japanese Patent Application No. 128314/1982. [0011] The configuration of a two-stator induction motor will be explained with reference to FIG. Reference numeral 1 denotes a two-stator induction motor according to the present invention, and the induction motor 1 has the following configuration. A rotor core portion 2.3 formed by laminating steel plates made of magnetic material is mounted on the rotor shaft 4 with arbitrary intervals. Rotor core part 2
. A plurality of conductors 15 are connected by a resistive material 9, and a plurality of rotor conductors 6 are connected in series, and short-circuit rings 8, 8 are formed at their outer ends by casting. . [0012] Winding 10.11 on the outer part facing the rotor core part 2.3
The first stator 12 and the second stator 13 which have been subjected to the above steps are fixed to the machine frame 14. [0013] Next, an embodiment of the present invention will be described with reference to FIGS. 2, 3, and 4. FIG. 2 shows a side sectional view of a plurality of conductors 15 connected by a resistive material 9. As shown in FIG. [0014] Concave portions 16 are provided at both ends of the conductor 15, and the inside of the concave portion is formed to a size that covers a hole made in the steel plate of the rotor core portion 2.3, and one of the holes is closed. Further, a protrusion 17 is provided within the recess. [0015] FIG. 3 shows a side view of a plurality of conductors 15 connected by resistance material 9. This conductor 15 connects the holes of the opposing core parts between the rotor core parts 2 and 3, and is connected by a resistive material 9 at its outer periphery. [0016] As mentioned above, the size of the recess 16 is such that it covers at least one hole in the rotor core portion, and in some cases, the size of the recess 16 is such that it covers two holes with one recess. The shape also changes depending on each. [0017] Although an example is shown in which two protrusions 17 are provided, there may be one protrusion, and the shape is not limited to optical measurement, such as a round shape. Furthermore,
The shape of the resistive material 9 is not limited to the optical array, but may also be fan-shaped to provide other effects. [0018] By the way, the resistance material 9 and the conductor 15 are cast in aluminum or aluminum alloy, and it is most convenient to form the resistance material 9 and the conductor 15 integrally at the same time. This is advantageous if it is formed into an integral rotor. [0019] The rotor 7 having the above configuration will be further explained with reference to FIG. First, the rotor core portion 2.3 is a conventional laminated steel plate, and is the same as the core of a general induction motor except that the number of laminated steel plates is two. Next, conductor 15 and resistance material 9
is formed at the same time by casting aluminum or aluminum alloy, and the extra resistance material 9 and conductor 1 are
It can be easily formed without providing a fixing process with 5. The rotor core parts 2, 3 and the conductor 15 thus formed are disposed on a rotor strip or a casting mandrel 18. In other words, the rotor core parts 2 and 3 are arranged on a mandrel at arbitrary intervals, and the resistive material 9 and the conductor 15, which are simultaneously formed by casting, are provided at the arbitrary intervals. For convenience of explanation, the mold is omitted from the drawing, but by casting aluminum or aluminum alloy from the left and right 19.20 of the rotor, short-circuit rings 8 on the left and right and rotor conductors 6 communicating on the left and right are formed and integrated. The rotor can be formed using the same method as for general induction motors. During this casting, the protrusions 17 in the recesses of the conductor 15 melt at the temperature of the casting material when it is press-fitted into the recesses 16, and after cooling, the rotor cores 2 and 3 are formed. The conductors and the conductor 15 are fixed by melting the protrusion 17 of the recess 16, and a rotor conductor communicating with the rotor core portion 2.3 is formed. Furthermore, the rotor core 2.3 and the conductor 15 can be a structurally integral rotor. [0020] By the way, in order to make the adhesion between the protrusion 17 and the casting material more reliable, after casting, means for locally heating only the protrusion 17 portion, such as welding means such as laser or plasma, may be used. . [0021]

【発明の効果】【Effect of the invention】

このように２個の回転子コア部に形成する回転子導体を
連通状に連絡する一体的回転子を従来の鋳込みという方
法で簡単に形成することが可能であり、それぞれの個々
の部分品も何ら困難な手法を必要とせず、能率良く低コ
ストで生産することができるようになった。 ［００２２］ 以上のことから、トルクの多様化、可変速あるいは始動
性を改善するタイプの２固定子誘導電動機に関し、低コ
スト、高能率に製造可能である回転子を提供することが
可能となった。In this way, it is possible to easily form an integral rotor that connects the rotor conductors formed in the two rotor core parts in a continuous manner using the conventional casting method, and each individual component can also be formed. It has become possible to produce efficiently and at low cost without the need for any difficult methods. [0022] From the above, it has become possible to provide a rotor that can be manufactured at low cost and with high efficiency for a two-stator induction motor of the type that provides diversified torque, variable speed, or improves startability. Ta.

【図面の簡単な説明】[Brief explanation of drawings]

【第１図】複数固定子誘導電動機の側断面図[Figure 1] Side sectional view of a multiple stator induction motor

【第２図】
鋳込みで一体的に形成した抵抗材と導体の側断面図[Figure 2]
Side cross-sectional view of resistor material and conductor integrally formed by casting

【第
３図】鋳込みで一体的に形成した抵抗材と導体の側面図
[Figure 3] Side view of resistor material and conductor integrally formed by casting

【第４図】鋳込み時の回転子の構成を示す側断面図であ
る。FIG. 4 is a side sectional view showing the configuration of the rotor during casting.

【符号の説明】[Explanation of symbols]

１　複数固定子誘導電動機 ２　回転子コア部 ３　回転子コア部 ４　回転子軸 ５　任意間隔 ６　回転子導体 ７　回転子 ８　短絡環 ９　抵抗材 １０　巻線 １１　巻線 １２　第１固定子 １３　第２固定子 １４　機枠 １５　導体 四部 突起 マンドレル 回転子の左右 回転子の左右 1 Multiple stator induction motor 2 Rotor core part 3 Rotor core part 4 Rotor shaft 5 Arbitrary interval 6 Rotor conductor 7 Rotor 8 Short circuit ring 9 Resistance material 10 Winding wire 11 Winding wire 12 First stator 13 Second stator 14 Machine frame 15 Conductor Four parts protrusion mandrel rotor left and right rotor left and right

【書類基】[Document base]

【図１】 図面[Figure 1] drawing

【図４】[Figure 4]

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】複数個の孔を開設した鋼板を積層して形成
した２個の回転子コア部を任意間隔を設けて同軸上に配
設し、前記任意間隔において、それぞれ対向する回転子
コア部の複数個の孔を、それぞれ連通するよう、アルミ
ニウムまたはアルミニウム合金の鋳込みで一体的に形成
した複数個の導体と該複数個の導体を連結した抵抗材と
を設け、更に前記複数個の孔にアルミニウムまたはアル
ミニウム合金を鋳込んで形成したことを特徴とする誘導
電動機の回転子。[Claim 1] Two rotor core parts formed by stacking steel plates with a plurality of holes are disposed on the same axis at an arbitrary interval, and the rotor cores are opposed to each other at the arbitrary interval. A plurality of conductors integrally formed by casting aluminum or an aluminum alloy and a resistive material connecting the plurality of conductors are provided so that the plurality of holes in the section are connected to each other, and the plurality of holes are connected to each other. A rotor for an induction motor characterized by being formed by casting aluminum or an aluminum alloy into a rotor. 【請求項２】請求項堯記載の誘導電動機の回転子であっ
て、前記アルミニウムまたはアルミニウム合金で一体的
に形成した複数個の導体のそれぞれの両端に前記鋳込み
時に少なくとも回転子コア部の孔１つを覆う凹部を設け
ると共に該凹部内に少なくとも１つの突起を設けたこと
を特徴とする誘導電動機の回転子。2. A rotor for an induction motor according to claim 1, wherein holes 1 in at least the rotor core portion are formed at both ends of each of the plurality of conductors integrally formed of aluminum or aluminum alloy at the time of said casting. 1. A rotor for an induction motor, characterized in that the rotor is provided with a concave portion that covers the top of the rotor, and at least one protrusion is provided within the concave portion.