JP2904790B2 - Variable speed induction motor - Google Patents
Variable speed induction motorInfo
- Publication number
- JP2904790B2 JP2904790B2 JP63205839A JP20583988A JP2904790B2 JP 2904790 B2 JP2904790 B2 JP 2904790B2 JP 63205839 A JP63205839 A JP 63205839A JP 20583988 A JP20583988 A JP 20583988A JP 2904790 B2 JP2904790 B2 JP 2904790B2
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- stator
- facing
- bearing
- cores
- 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 - Fee Related
Links
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- Control Of Ac Motors In General (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、可変速誘導電動機に関するものであり、よ
り詳しくは、単一の回転子と複数個の固定子とを有し、
任意の固定子を回動することにより複数個の固定子のう
ち何れか一方の固定子に対峙する回転子導体部分に誘起
する電圧と他方の固定子に対峙する前記回転子の対応す
る導体部分に誘起する電圧との間に位相差を生じさせ、
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
とができる所謂複数固定子構成の可変速誘導電動機に関
する。Description: TECHNICAL FIELD The present invention relates to a variable speed induction motor, and more specifically, has a single rotor and a plurality of stators,
A voltage induced in a rotor conductor portion facing one of the plurality of stators by rotating an arbitrary stator and a corresponding conductor portion of the rotor facing the other stator. Causes a phase difference between the induced voltage and
The present invention relates to a variable speed induction motor having a so-called multiple stator configuration that can arbitrarily change the rotation speed and generated torque of a rotor.
誘導電動機の速度を制御する方法としては、電源周波
数を変える方法、固定子に施した巻線の極数切換、一次
電圧を制御する方法などがある。また、特公昭27−4357
号公報に記載されている技術は、固定子を固着固定子と
可動固定子との2組に分割しそれぞれ同一巻線となし同
一電源に接続し、又回転子も2組に分割し回転子導体は
それぞれ中央部を幅広くなしたる羽状導体にて接続し両
端を短絡環にて接続し、前記可動固定子を回動し他方の
固着固定子により2次に誘導する2次誘導電圧に対し同
一導体内に異相電流を生ぜしめ、二つのヴェクトル和の
電流が回転子導体に2次電流として通ずる如くなし、任
意に電動機の速度を可変する如くなしたる可動速誘導電
動機であるが、可動固定子をすべり軸受に装着して可動
するように形成したものであるから、可動固定子とすべ
り軸受との摺動摩擦力が大きく、回転子の速度制御のた
めに可動固定子を回動する際に大きな力を必要とし、可
動固定子を小型モーターによって自動制御しようとすれ
ば相当の大負荷となる。このため、大型の回動用モータ
ーの使用が不可避となり、無駄な大電力を放熱するだけ
でなく、事実上実用に堪えないものである。この傾向は
可変速誘導電動機が大型となるほど顕著となるものであ
った。Methods for controlling the speed of the induction motor include a method of changing the power supply frequency, a method of switching the number of poles of a winding applied to a stator, and a method of controlling a primary voltage. In addition, Japanese Patent Publication No. 27-4357
In the technique described in the above publication, the stator is divided into two sets of a fixed stator and a movable stator, each of which has the same winding and is connected to the same power source. The conductors are connected by a wing-shaped conductor whose central portion is widened, and both ends are connected by a short-circuit ring, and the movable stator is rotated to a secondary induced voltage which is secondarily induced by the other fixed stator. On the other hand, it is a movable speed induction motor that generates a different-phase current in the same conductor so that the current of the two vectors passes through the rotor conductor as a secondary current and arbitrarily changes the speed of the motor. Since the movable stator is formed to be movable by being mounted on the slide bearing, the sliding friction force between the movable stator and the slide bearing is large, and the movable stator is rotated for controlling the speed of the rotor. Requires a large force when moving the The equivalent of a large load if an attempt automatic control by ter. For this reason, the use of a large-sized rotating motor becomes unavoidable, not only dissipating wasteful large power but also practically not being practical. This tendency became more remarkable as the size of the variable speed induction motor became larger.
本発明における回転子導体を短絡する抵抗材を有する
回転子において、複数個の固定子のうち何れかの固定子
を回動して電圧移相装置となし、この電圧移相装置によ
り生起される位相差により、前記回転子導体に連結した
前記抵抗材に電流が流れて回転子導体抵抗が増したよう
になり大きなトルクを発生することができるが、その反
面、抵抗材の発熱も大きくその影響により回動自在に形
成した固定子は膨脹し、たとえば単に機枠内周面と固定
子外周面に摺動体を設けて摺動するものや機枠内周面と
固定子外周面との間にボールベアリングまたはローラー
ベアリングを介在したすべり軸受方式などでは回動不能
となってしまっていた。本発明は、このような問題点を
解決する技術を提供しようとするものである。In the rotor having the resistance material for short-circuiting the rotor conductor according to the present invention, any one of the plurality of stators is rotated to form a voltage phase shifter, which is generated by the voltage phase shifter. Due to the phase difference, a current flows through the resistance material connected to the rotor conductor, and the resistance of the rotor conductor is increased, so that a large torque can be generated. The stator formed rotatably by this expands, for example, by simply providing a sliding body on the inner peripheral surface of the machine frame and the outer peripheral surface of the stator, or sliding between the inner peripheral surface of the machine frame and the outer peripheral surface of the stator. In the case of a sliding bearing system with a ball bearing or roller bearing interposed, rotation was impossible. The present invention seeks to provide a technique for solving such a problem.
〔課題を解決するための手段〕 上記目的を達成するために本発明は、同一回転軸に一
定の間隔をもって軸着された複数個の回転子コア上に複
数個の回転子導体を連通状に装設し、前記回転子導体を
前記複数個の回転子コア間において抵抗材によって短絡
連結した一体的な回転子と、該回転子の各回転子コアに
それぞれ対峙する固定子コアを有し前記回転子と同軸上
に並設した複数個の固定子とを機枠内に設け、 .前記複数個の固定子のうち少なくとも1個の固定子
の外周側部に、回転子軸を中心とした向心する摺動面を
設け、前記少なくとも1個の固定子に対峙する機枠内周
面に、前記向心した摺動面と摺動する外向した摺動面を
内設し、前記少なくとも1個の固定子を前記固定子と同
心的に回動自在に形成。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a method in which a plurality of rotor conductors are connected to each other on a plurality of rotor cores which are axially attached to the same rotating shaft at a fixed interval. A rotor integrally mounted and short-circuited by a resistance material between the plurality of rotor cores, and a stator core facing each rotor core of the rotor. A rotor and a plurality of stators arranged coaxially side by side in a machine frame; At least one of the plurality of stators is provided on its outer peripheral side with a sliding surface that is centered about a rotor axis, and is provided on an inner periphery of a machine frame that faces the at least one stator. A surface is provided with an outwardly facing sliding surface that slides on the facing sliding surface, and the at least one stator is rotatably formed concentrically with the stator.
.前記複数個の固定子のうち少なくとも1個の固定子
の外周側部に、回転子軸を中心として向心する軸受面を
設け、前記少なくとも1個の固定子に対峙する機枠内周
面に、前記向心した軸受面に対峙する外向した軸受面を
内設し前記向心した軸受面と外向した軸受面にボール状
転動体を介在して、前記少なくとも1個の固定子を前記
回転子と同心的に回動自在に形設。. At least one of the plurality of stators has an outer peripheral side provided with a bearing surface that is centered around a rotor shaft, and is provided on an inner peripheral surface of a machine frame facing the at least one stator. An external bearing surface facing the central bearing surface, and a ball-shaped rolling element interposed between the central bearing surface and the external bearing surface, and the at least one stator is connected to the rotor. It is formed concentrically and freely rotatable.
して回動固定子としたことにより解決の手段とした。As a result, a rotating stator is used to solve the problem.
なお、本発明の可変速誘導電動機は、単相または3相
のいずれにも形成でき、回転子の形態は、普通かご形、
二重かご形、深溝かご形、特殊かご形等のいずれの形式
のものにも適用できるものである。Note that the variable speed induction motor of the present invention can be formed in any of a single phase or a three phase, and the rotor is formed in a normal cage shape,
It can be applied to any type such as double cage, deep groove cage and special cage.
上記の如く構成された可変速誘導電動機の作用は次の
とおりである。すなわち、回動固定子を、固定子の外周
側部に設けた向心した摺動面あるいは軸受面と機枠内周
に設けた外向した摺動面あるいは軸受面との間で前記摺
動面の摺動や前記軸受面にボール状転動体を介在した回
動としたため、本可変速誘導電動機のように、抵抗材の
作用で大きなトルクを出す時発生する熱や異常温度上昇
のため面軸受が膨脹しても、回動固定子の軸受の向心す
る面は外向に、機枠に内接する軸受の外向面は内向に膨
脹し、向心する面と外向する面の隙間は広がり、膨脹に
よる面軸受への影響は無視され、従来例のように固定子
の回動のために固定子外周と機枠内周に摺動体を設けて
摺動したり、固定子の外周部にボールベアリングまたは
ローラーベアリングを嵌装して機枠に装着する構成とし
た場合、前記回動自在に形成した固定子が膨脹してボー
ルベアリングまたはロラーベアリングに大きな力がかか
り、かつ機枠側にも大きな力がかかるので、膨脹が大き
ければ摺動面が固着したりボールベアリングまたはロー
ラーベアリングの破損あるいは機枠側の破損が起こった
り、摺動面やボールベアリングまたはローラーベアリン
グの固定子または機枠側との接触点が電動機運転中の振
動の作用と相まって摩耗したりすることは、本発明にお
いて解消した。The operation of the variable speed induction motor configured as described above is as follows. That is, the rotating stator is provided between the facing sliding surface or bearing surface provided on the outer peripheral side of the stator and the facing sliding surface or bearing surface provided on the inner periphery of the machine frame. Because of the sliding of the bearing and the rotation with the ball-shaped rolling elements interposed on the bearing surface, heat generated when a large torque is generated by the action of the resistive material as in the variable speed induction motor, and an abnormal temperature rise Even if the bearing expands, the facing surface of the bearing of the rotating stator expands outward, and the facing surface of the bearing inscribed in the machine frame expands inward, and the gap between the facing surface and the facing surface expands. The effect on the surface bearing by the bearing is neglected, and a sliding body is provided on the outer circumference of the stator and the inner circumference of the machine frame for the rotation of the stator as in the conventional example, or the ball bearing is mounted on the outer circumference of the stator. Or, in the case where the roller bearing is fitted and mounted on the machine frame, the rotatable member is formed. If the expansion expands, a large force is applied to the ball bearings or roller bearings, and a large force is applied to the machine frame.If the expansion is large, the sliding surface will stick, the ball bearings or roller bearings will be damaged, or the machine frame will be damaged. The present invention has solved the problem of the occurrence of damage to the sliding surface and the abrasion of the sliding surface and the contact point between the ball bearing or the roller bearing and the stator or the machine frame side in combination with the action of vibration during operation of the motor.
〔実施例〕 以下、実施例について第1図と第2図を参照しながら
説明する。Embodiment An embodiment will be described below with reference to FIGS. 1 and 2.
先ず、本発明が適用される可変速誘導電動機1の構成
を概略説明する。回転子2の回転子軸3上には、回転子
コア2A,2Bが一定の間隔をもって装着される。回転子コ
ア2A,2B間には非磁性体コア部2Cが設けられる。回転子
コア2A,2B上にはその外側部端部間に渡って連通状に複
数個の回転子導体4…がかご状に装設され、その両端部
は短絡環5,6により相互短絡される。回転子導体4…は
非磁性体コア部2Cで抵抗材rによって相互連結(抵抗短
絡)される。このようにして一体的に構成された回転子
2は、その両端部が軸受7A,4Bに軸支されることにより
電動機機枠10内において回転自在となる。また回転子コ
ア2,3の適所には通気孔25A,25Bを開設する。First, the configuration of the variable speed induction motor 1 to which the present invention is applied will be schematically described. Rotor cores 2A and 2B are mounted on the rotor shaft 3 of the rotor 2 at regular intervals. A non-magnetic core portion 2C is provided between the rotor cores 2A and 2B. On the rotor cores 2A and 2B, a plurality of rotor conductors 4 are provided in a cage shape so as to communicate with each other between outer end portions thereof, and both end portions are mutually short-circuited by short-circuit rings 5 and 6. You. The rotor conductors 4 are interconnected (resistance short-circuit) by the resistance material r in the nonmagnetic core portion 2C. The rotor 2 integrally formed in this manner is rotatable in the motor frame 10 because both ends thereof are supported by bearings 7A and 4B. In addition, ventilation holes 25A and 25B are opened at appropriate positions of the rotor cores 2 and 3.
回転子コア2A,2Bの各外周面に対峙して機枠10の内壁
面に固定子12A,12Bが並設される。さらに図面により明
らかな様に、円筒状の機枠10と、該機枠両側部の軸受板
40A,40Bは、ボルト19A,19Bを締めることにより一体的に
組付けられる。又、軸受板40A,40Bには通気孔41A,41Bを
開設している。The stators 12A and 12B are arranged side by side on the inner wall surface of the machine frame 10 so as to face the respective outer peripheral surfaces of the rotor cores 2A and 2B. Further, as is apparent from the drawings, a cylindrical machine frame 10 and bearing plates on both sides of the machine frame
40A and 40B are assembled integrally by tightening bolts 19A and 19B. Further, ventilation holes 41A, 41B are formed in the bearing plates 40A, 40B.
本実施例の場合、固定子12Bは機枠の内壁面に固設さ
れる固着固定子である。固定子12Aは、該固定子外周面
と機枠内周面それぞれに固着又は嵌装した軸受50,51
と、ボールベアリング54と、小型モータ15及びギヤ16,1
7とにより構成されることで回転子軸3と同心的に回転
自在に形設しているので固定子12Bに対し固定子12Aは回
動固定子となっている。(前記軸受については後述す
る。) 尚、前記回動固定子12A及び、固着固定子12Bには、そ
れぞれ通気孔30A,30Bを開設している。そして機枠10の
中央上部には開口された排風口20を包囲して、上部開放
状の送風胴21が固着され、該送風胴21にファンモータ22
が支持され、さらに該モータ22の回転軸にファン23が軸
着されている。In the case of the present embodiment, the stator 12B is a fixed stator fixed to the inner wall surface of the machine frame. The stator 12A includes bearings 50, 51 fixed or fitted on the outer peripheral surface of the stator and the inner peripheral surface of the machine frame, respectively.
, Ball bearing 54, small motor 15 and gears 16,1
7, the rotor 12A is configured to be rotatable concentrically with the rotor shaft 3, so that the stator 12A is a rotating stator with respect to the stator 12B. (The bearing will be described later.) The rotary stator 12A and the fixed stator 12B have ventilation holes 30A and 30B, respectively. A blower cylinder 21 having an open top is fixedly surrounding the open air outlet 20 at the upper center of the machine frame 10, and a fan motor 22 is attached to the blower cylinder 21.
, And a fan 23 is axially mounted on the rotation shaft of the motor 22.
ギャ17は回動固定子12Aの外周面に嵌着され、前記ギ
ャ16と小型モータ15で回動機構18を形成している。これ
により固着固定子12Bに対し相対的に回動できるように
なっている。この回動機構を操作することにより、具体
的には小型モータ15を任意量回転させることにより、回
転子の各固定子に対応する回転子導体部分間に位相差が
生じる。即ち、図示実施例ではこの回動機構が電圧移相
装置18を構成する。The gear 17 is fitted on the outer peripheral surface of the rotating stator 12A, and the rotating mechanism 18 is formed by the gear 16 and the small motor 15. Thereby, it can rotate relatively to the fixed stator 12B. By operating this rotating mechanism, specifically, by rotating the small motor 15 by an arbitrary amount, a phase difference is generated between the rotor conductor portions corresponding to the respective stators of the rotor. That is, in the illustrated embodiment, this rotating mechanism constitutes the voltage phase shift device 18.
符号60は突片を入出動制御するソレノイドで、ソレノ
イド60は機枠14に装着して、その突片を回動固定子12A
に嵌着したギヤー17に装着自在に係合させて、回動固定
子12Aが必要時以外に回動しないよう固定する。Reference numeral 60 denotes a solenoid for controlling the movement of the projecting piece in and out. The solenoid 60 is mounted on the machine frame 14 and the projecting piece is rotated by the rotating stator 12A.
The rotation stator 12A is fixed so that it does not rotate except when necessary, by being freely attached to the gear 17 fitted to the gear 17.
なお、各固定子12A,12Bに巻装された固定子巻線13A,1
3Bの電源への接続は直列又は並列の何れであっても構わ
ない。また、電圧移相装置として回動機構によるものを
示したが、固定子巻線の結線切り換え方式の移相器を介
在させる等の純電気的手段と回動機構との組み合わせと
することもある。The stator windings 13A, 13A wound around the stators 12A, 12B, respectively.
The connection to the power supply of 3B may be either serial or parallel. In addition, although the voltage phase shifter is shown by a rotating mechanism, it may be a combination of pure electric means such as interposing a phase shifter of a connection switching type of a stator winding and a rotating mechanism. .
第3図および第6図に基づいて前記軸受50,51の第1
の実施例について説明する。The first of the bearings 50 and 51 will be described with reference to FIGS.
An example will be described.
回動固定子12Aの外周に固着される向心する軸受面57
を持つ軸受50と前記回動固定子12Aに対峙する機枠内周
面に設けた外向する軸受面58を持つ軸受51とは、前記軸
受50の向心する軸受面57と軸受51の外向する軸受面58と
の間にボールベアリングを介在し回動固定子12Aは回転
子2と同心的に回動自在となる。このとき軸受50と軸受
51とはボールベアリングを介在した向心する軸受面57と
外向する軸受面58のみの接触で、他の一部分は互いにあ
る間隙を持っている。Opposing bearing surface 57 fixed to the outer periphery of the rotating stator 12A
The bearing 50 having the bearing 50 and the bearing 51 having the outward bearing surface 58 provided on the inner peripheral surface of the machine frame facing the rotating stator 12A are provided with the bearing surface 57 facing the center of the bearing 50 and the bearing 51 facing outward. With the ball bearing interposed between the bearing and the bearing surface 58, the rotating stator 12A is rotatable concentrically with the rotor 2. At this time, the bearing 50 and the bearing
Reference numeral 51 denotes a contact between only the bearing surface 57 facing the center and the bearing surface 58 facing outward with the ball bearing interposed therebetween, and the other portions have a certain gap therebetween.
次に第7図および第8図に基づいて前記軸受50,51の
第2の実施例について説明する。回動用固定子12Aの外
周に固着した向心する摺動面61を持つ軸受50と、前記回
動固定子12Aに対峙する機枠内周面に設けた前記摺動面6
1に摺動する外向した摺動面62を持つ軸受51との摺動に
より、回動固定子12Aは回転子2と同心的に回動自在と
なる。このとき軸受50と軸受51とは向心する摺動面60と
外向する摺動面61との接触のみで、他の一部分は互いに
ある隙間を持っている。Next, a second embodiment of the bearings 50 and 51 will be described with reference to FIGS. A bearing 50 having an opposed sliding surface 61 fixed to the outer periphery of the rotating stator 12A, and the sliding surface 6 provided on an inner peripheral surface of the machine frame facing the rotating stator 12A.
By sliding with the bearing 51 having the outwardly facing sliding surface 62 that slides in 1, the rotating stator 12A becomes rotatable concentrically with the rotor 2. At this time, the bearing 50 and the bearing 51 are only in contact with the sliding surface 60 facing the center and the sliding surface 61 facing the outside, and the other portions have a certain gap therebetween.
そして軸受50の外周には前記ギヤ17を嵌着したり、軸
受50自身にギヤ17を形成したりすることもある。また軸
受51は軸受51Aと機枠10とに螺刻し、軸受51Aを、機枠10
に螺入して複数個のストッパー53および止メネジ56で固
定する。一方軸受51Bは機枠10に一体的に形成(第3
図)するが本実施例以外に、軸受51Aと同様螺入するか
(第4図)、軸受51Bを機枠内に圧入する方法(第5
図)がとられる。The gear 17 may be fitted on the outer periphery of the bearing 50, or the gear 17 may be formed on the bearing 50 itself. The bearing 51 is screwed into the bearing 51A and the machine casing 10, and the bearing 51A is
And fixed with a plurality of stoppers 53 and set screws 56. On the other hand, the bearing 51B is formed integrally with the machine frame 10 (third
However, in addition to the present embodiment, a method similar to that of the bearing 51A (FIG. 4) or a method of press-fitting the bearing 51B into the machine frame (FIG. 5)
Figure) is taken.
前記ストッパー53は機枠外周からボルト52Aにより機
枠内周に固着しボルト52Bをストッパー53に螺入して、
軸受51Aを固定する。The stopper 53 is fixed to the inner periphery of the machine frame by bolts 52A from the outer periphery of the machine frame, and the bolt 52B is screwed into the stopper 53,
The bearing 51A is fixed.
軸受51の外向する軸受面58と外向する摺動面62及び軸
受50の向心する軸受面57と向心する摺動面61に対し耐久
性の向上を目的としてコーティング等の処理を施すこと
も考えられる。Coating or the like may be applied to the outer bearing surface 58 and the outer sliding surface 62 of the bearing 51 and the outer bearing surface 57 and the opposite sliding surface 61 of the bearing 50 for the purpose of improving durability. Conceivable.
上記構成の軸受は、本発明に係る可変速誘導電動機の
高トルク発生時と始動時及び長時間運転時における抵抗
材や固定子からの発熱や異常温度上昇による熱膨脹を伴
うが、この熱膨脹により前記軸受50,51も膨脹する。こ
こで本発明の場合、固定子の外周側部に設けた向心する
軸受面57と機枠内周面に設けた外向する軸受面58との間
にボール状転動体を介在した回動固定子としたり、固定
子外周部に設けた向心する摺動面61と機枠内周面に設け
た外向する摺動面62との摺動により回動固定子としたた
め、発熱による前記面軸受50,51の膨脹は第6図および
第8図のごとく回動固定子の向心する軸受面57あるいは
向心する摺動面61と機枠に内接し外向する軸受面58ある
いは外向する摺動面62との隙間は広がり、従来のような
機枠との嵌合圧による、軸受の不可動などは無視できる
ようになる。The bearing having the above-described structure involves heat expansion due to heat generation from the resistance material and the stator and abnormal temperature rise at the time of generation of high torque and at the time of start-up and long-time operation of the variable speed induction motor according to the present invention. The bearings 50 and 51 also expand. Here, in the case of the present invention, the rotation fixing in which a ball-shaped rolling element is interposed between the facing bearing surface 57 provided on the outer peripheral side of the stator and the outward bearing surface 58 provided on the inner peripheral surface of the machine frame. Or a rotating stator formed by sliding a facing sliding surface 61 provided on the outer peripheral portion of the stator and a facing sliding surface 62 provided on the inner peripheral surface of the machine frame. As shown in FIGS. 6 and 8, the expansion of 50 and 51 is caused by the bearing surface 57 or the sliding surface 61 facing the center of the rotating stator and the bearing surface 58 inwardly facing the machine frame or the sliding surface facing outward. The gap with the surface 62 is widened, and the non-movability of the bearing due to the conventional fitting pressure with the machine frame can be ignored.
以上の如き構成において回転子軸3に同心的に形設さ
れた回動自在の回動固定子12Aは、電圧移相装置18の小
型モータ15により調節設定される。回動固定子12Aの回
動により、回転子・固定子間に生起する回転磁界に、位
相のずれを生じさせ、回転子導体に誘起する電圧を増減
制御することにより、回転子の回転速度を任意に変え得
る。さらに回動固定子12Aを回動させると、回転子2A,2B
間の連通状に装設された回転子導体4は、抵抗材rによ
って短絡連結された一体構造のため、該抵抗材rには位
相差による電流が流れ、回転子導体4の抵抗が増したよ
うになり、大きなトルクを発生することができる。In the above configuration, the rotatable rotary stator 12A formed concentrically with the rotor shaft 3 is adjusted and set by the small motor 15 of the voltage phase shifter 18. The rotation of the rotating stator 12A causes a phase shift in a rotating magnetic field generated between the rotor and the stator, thereby increasing or decreasing the voltage induced in the rotor conductor, thereby increasing the rotational speed of the rotor. Can be changed arbitrarily. When the rotating stator 12A is further rotated, the rotors 2A and 2B
Since the rotor conductor 4 provided in communication between them has an integral structure short-circuited by a resistor r, a current due to a phase difference flows through the resistor r, and the resistance of the rotor conductor 4 increases. As a result, a large torque can be generated.
以上の可変速誘導電動機は、従来例の様な機枠内面と
回動固定子外周面との間の嵌合による機枠内面からの嵌
合面圧力や、可変速誘導電動機に大きなトルクを発生さ
せて、回転子導体の抵抗材が発熱した時または異常温度
上昇時に回動固定子の熱膨脹を伴なうが、この回動固定
子の熱膨脹などに伴う、前記嵌合部のきしみ又は不可動
は、上記詳説の如く固定子を支持することにより無視で
きるようになる。The above-described variable speed induction motor generates a large fitting surface pressure from the machine frame inner surface due to the fitting between the machine frame inner surface and the rotating stator outer peripheral surface as in the conventional example, and a large torque to the variable speed induction motor. When the resistance material of the rotor conductor generates heat or when the temperature of the rotor rises abnormally, the rotating stator is thermally expanded. Can be ignored by supporting the stator as detailed above.
本発明は以上のように構成されたので、固定子の回動
を小さい力で可能とし、かつ、長時間運転あるいは高ト
ルクで運転して発熱を大きく伴っても固定子の回動には
全く支障が起こらず、起動時には位相差を大きくあるい
は180゜とし、起動後は位相差を小さくあるいは0゜と
して使用することもでき、また起動から回転までを位相
差を連続的又は段階的に大きくすることにより、大きな
起動トルクで始動し、なめらかに定常回転へ移行するこ
とになりトルク特性と効率の優れた可変速誘導電動機を
円滑に運転することを可能にしたのである。Since the present invention is configured as described above, the rotation of the stator can be performed with a small force, and even if the stator is rotated for a long time or at a high torque and generates a large amount of heat, the rotation of the stator is completely impossible. There is no hindrance, and the phase difference can be set to be large or 180 ° at start-up, and can be used as small or 0 ° after start-up, and the phase difference can be increased continuously or stepwise from start to rotation. As a result, the motor is started with a large starting torque and smoothly shifts to a steady rotation, so that the variable speed induction motor having excellent torque characteristics and efficiency can be smoothly operated.
第1図は本発明による可変速誘導電動機の側断面図、第
2図は正断面図、第3図は第2図中A部の第1実施例の
詳細図、第4図はA部の別の実施例図、第5図はA部の
別の実施例図、第6図は第3図中B部の詳細図、第7図
は第1図中A部の第2実施例図、第8図は第7図中B部
の詳細図。 図において、1……可変速誘導電動機、2……回転子、
2A,2B……回転子コア、2C……非磁性体コア部、3……
回転子軸、4……回転子導体、5,6……短絡環、7A,7B…
…軸受、10……機枠、12A……回動固定子、12B……固着
固定子、13A,13B……固定子巻線、15……小型モータ、1
6,17……ギヤ、18……電圧移相装置、19A,19B……ボル
ト、20……排風口、21……送風胴、22……ファンモータ
ー、23……ファン、25A,25B,30A,30B,30C,40A,40B……
通気孔、50,51A,51B……軸受、52A,52B……ボルト、53
……ストッパー、54……ボールベアリング、55……シー
ル、56……止メネジ、57……向心する軸受面、58……外
向する軸受面、60……ソレノイド、61……向心する摺動
面、62……外向する摺動面、r……抵抗材。1 is a side sectional view of a variable speed induction motor according to the present invention, FIG. 2 is a front sectional view, FIG. 3 is a detailed view of a first embodiment of a portion A in FIG. 2, and FIG. FIG. 5 is another embodiment of part A, FIG. 6 is a detailed view of part B in FIG. 3, FIG. 7 is a second embodiment of part A in FIG. FIG. 8 is a detailed view of a portion B in FIG. In the figure, 1 ... variable speed induction motor, 2 ... rotor,
2A, 2B: rotor core, 2C: non-magnetic core, 3 ...
Rotor shaft, 4 ... Rotor conductor, 5,6 ... Short-circuit ring, 7A, 7B ...
… Bearing, 10… Machine frame, 12A… Rotating stator, 12B …… Fixed stator, 13A, 13B …… Stator winding, 15 …… Small motor, 1
6, 17 ... gear, 18 ... voltage phase shifter, 19A, 19B ... bolt, 20 ... exhaust outlet, 21 ... blower, 22 ... fan motor, 23 ... fan, 25A, 25B, 30A , 30B, 30C, 40A, 40B ……
Vent holes, 50, 51A, 51B …… Bearing, 52A, 52B …… Bolt, 53
… Stopper, 54… Ball bearing, 55… Seal, 56… Set screw, 57… Centered bearing surface, 58… Outside bearing surface, 60… Solenoid, 61… Centered slide Moving surface, 62: sliding surface facing outward, r: resistance material.
Claims (2)
た複数個の回転子コア上に複数個の回転子導体を連通状
に装設し、前記回転子導体を前記複数個の回転子コア間
において抵抗材によって短絡連結した一体的な回転子
と、該回転子の各回転子コアにそれぞれ対峙する固定子
コアを有し前記回転子と同軸上に並設した複数個の固定
子を機枠内に設け、前記複数個の固定子のうち少なくと
も1個の固定子の外周側部に、回転子軸を中心とした向
心する摺動面を設け、前記少なくとも1個の固定子に対
峙する機枠内周面に、前記向心した摺動面と摺動する外
向した摺動面を内設し、前記向心した摺動面と外向した
摺動面との摺動で前記少なくとも1個の固定子を前記回
転子と同心的に回動自在に形設して回動固定子としたこ
とを特徴とする可変速誘導電動機。1. A plurality of rotor conductors are provided in communication with each other on a plurality of rotor cores fixedly mounted on the same rotation shaft at fixed intervals, and the plurality of rotor conductors are connected to the plurality of rotor cores. An integrated rotor short-circuited by a resistance material between cores, and a plurality of stators having a stator core facing each rotor core of the rotor and being coaxially arranged with the rotor. A sliding surface that is provided in a machine frame, and is provided on an outer peripheral side of at least one of the plurality of stators so as to be centered on a rotor axis, and is provided on the at least one stator. An outwardly facing sliding surface that slides on the opposed centered sliding surface is provided on the inner peripheral surface of the facing machine frame, and the at least one of the at least two sliding surfaces is provided by sliding between the opposed centered sliding surface and the outwardly facing sliding surface. A variable stator wherein one stator is rotatably formed concentrically with the rotor to form a rotating stator. Induction motor.
た複数個の回転子コア上に複数個の回転子導体を連通状
に装設し、前記回転子導体を前記複数個の回転子コア間
において抵抗材によって短絡連結した一体的な回転子
と、該回転子の各回転子コアにそれぞれ対峙する固定子
コアを有し前記回転子と同軸上に並設した複数個の固定
子とを機枠内に設け、前記複数個の固定子のうち少なく
とも1個の固定子の外周側部に、回転子軸を中心として
向心する軸受面を設け、前記少なくとも1個の固定子に
対峙する機枠内周面に、前記向心した軸受面に対峙し該
向心した軸受面の成す半径より比較的小さい半径の外向
した面をもつ軸受面を内設し、前記向心した軸受面と外
向した軸受面にボール状転動体を介在して前記少なくと
も1個の固定子を前記回転子と同心的に回動自在に形設
して回動固定子としたことを特徴とする可変速誘導電動
機。2. A plurality of rotor conductors are provided in communication with each other on a plurality of rotor cores fixedly mounted on the same rotation shaft at fixed intervals, and the plurality of rotor conductors are connected to the plurality of rotor cores. An integral rotor short-circuited and connected by a resistance material between cores, and a plurality of stators having stator cores facing the respective rotor cores of the rotor and being coaxially arranged with the rotor. Is provided in a machine frame, and a bearing surface is provided on an outer peripheral side of at least one of the plurality of stators so as to be centered about a rotor shaft, and faces the at least one stator. A bearing surface having an outwardly facing surface having a radius relatively smaller than a radius formed by the opposed bearing surface and facing the opposed bearing surface, is provided on an inner peripheral surface of the machine frame; The at least one stator is moved forward with a ball-shaped rolling element interposed on the bearing surface facing outward. Variable speed induction motor, characterized in that the rotating stator with Katachi設 freely rotor concentrically with the rotation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63205839A JP2904790B2 (en) | 1988-08-18 | 1988-08-18 | Variable speed induction motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63205839A JP2904790B2 (en) | 1988-08-18 | 1988-08-18 | Variable speed induction motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0255598A JPH0255598A (en) | 1990-02-23 |
JP2904790B2 true JP2904790B2 (en) | 1999-06-14 |
Family
ID=16513568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63205839A Expired - Fee Related JP2904790B2 (en) | 1988-08-18 | 1988-08-18 | Variable speed induction motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2904790B2 (en) |
-
1988
- 1988-08-18 JP JP63205839A patent/JP2904790B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0255598A (en) | 1990-02-23 |
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