JP2008141892A - Self-starting permanent magnet type synchronous electric motor and compressor using the same - Google Patents

Self-starting permanent magnet type synchronous electric motor and compressor using the same Download PDF

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JP2008141892A
JP2008141892A JP2006327293A JP2006327293A JP2008141892A JP 2008141892 A JP2008141892 A JP 2008141892A JP 2006327293 A JP2006327293 A JP 2006327293A JP 2006327293 A JP2006327293 A JP 2006327293A JP 2008141892 A JP2008141892 A JP 2008141892A
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rotor
permanent magnet
self
end plate
synchronous motor
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Hakuei Ko
▲柏▼英 黄
Tomio Yoshikawa
富夫 吉川
Satoshi Kikuchi
菊地　　聡
暁史 ▲高▼橋
Akifumi Takahashi
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Hitachi Appliances Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that iron loss increases and vibration and noise of an electric motor occur due to a decrease in a cross section with which magnetic flux passes through a core and an increase in magnetic flux density in an end plate fixing structure of a rotator of a conventional self-starting permanent magnet type synchronous electric motor. <P>SOLUTION: Projection parts 5 and 25 fixing end plates for preventing magnet fall-off 6 and 26, which are united with a basket-type conductor by a die cast, are arranged. The end plates 6 and 26 are engaged and the projection parts 5 and 26 are crushed. Thus, the end plates 6 and 26 are easily fixed. A stage face 30 is disposed in a shaft 34 of the electric motor and the stage face 30a is closely stuck with the end plates for preventing magnet fall-off 6 and 40 or is brought into contact with them through a component such as a ring 43 so as to fix them. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、一般産業用や特に空気調和機等に使用される自己始動形永久磁石式同期電動機およびそれを用いた圧縮機に関するものである。 The present invention relates to a self-starting permanent magnet type synchronous motor used for general industries and particularly for an air conditioner and a compressor using the same.

自己始動形永久磁石式同期電動機において、回転子の永久磁石の脱落を防止するための端板を付ける構造について、例えば特開２００１−９５１８３号公報（特許文献１）に，回転子鉄心の外周付近に位置する複数の導体バーと回転子軸方向の両端面に位置する短絡環とをアルミダイキャストで一体成型して始動用かご形導体を形成するが、この場合、導体バーの内側に複数個の永久磁石が鉄心に埋設され、磁石の脱落の防止用端板を固定するために、回転子鉄心に数個貫通穴を空け、ダイキャストでアルミを貫通穴に注入し凸起部が形成され、凸起部を押し潰し端板を固定する構造が記載されている。   In a self-starting permanent magnet type synchronous motor, a structure for attaching an end plate to prevent the permanent magnet of the rotor from dropping is disclosed in, for example, Japanese Patent Application Laid-Open No. 2001-95183 (Patent Document 1), near the outer periphery of the rotor core. A plurality of conductor bars located on the two sides and short-circuit rings located on both end faces in the rotor axial direction are integrally molded by aluminum die casting to form a starting cage conductor. The permanent magnet is embedded in the iron core, and in order to fix the end plate for preventing the magnet from falling off, several through holes are made in the rotor iron core, and aluminum is injected into the through hole by die casting to form a protruding portion. The structure which crushes a protruding part and fixes an end plate is described.

また、鉄心端部の短絡環の内周に凹部を設けるようにダイキャストで形成し、端板の外周に短絡環の凹部が嵌合うような凸部の設けて、端板を嵌め合わせ後短絡環の内周に凹部周辺を回転子の軸方向に押し潰し端板を固定する構造が記載されている。   In addition, it is formed by die casting so as to provide a recess on the inner periphery of the short-circuit ring at the end of the iron core, and a short-circuit after fitting the end plate by providing a protrusion that fits the recess of the short-circuit ring on the outer periphery of the end plate A structure is described in which the periphery of the recess is crushed in the axial direction of the rotor and the end plate is fixed to the inner periphery of the ring.

特開２００１−９５１８３号公報JP 2001-95183 A

しかし、上記自己始動形永久磁石式同期電動機の回転子の端板固定構造では、回転子の鉄心に複数個貫通穴が空けられているため、鉄心に磁束を通す断面積が減り、磁束密度は上がることにより鉄損が増えると同時に電動機の振動、騒音などの課題が生じていた。 However, in the rotor end plate fixing structure of the self-starting permanent magnet synchronous motor, a plurality of through holes are made in the rotor iron core, so the cross-sectional area through which the magnetic flux passes is reduced, and the magnetic flux density is Increasing the iron loss caused problems such as motor vibration and noise.

また、端板の外周に設けた凸部を鉄心端部の短絡環の内周に凹部に嵌め込みの構造となっているため、短絡環の内周に凹部周辺を回転子の軸方向に押し潰しにくい課題があった。   In addition, since the convex portion provided on the outer periphery of the end plate is fitted into the concave portion on the inner periphery of the short-circuit ring at the end of the iron core, the periphery of the concave portion is crushed in the axial direction of the rotor on the inner periphery of the short-circuit ring. There was a difficult task.

このような課題を解決するために本発明は、
固定子鉄心に巻線が巻かれた固定子と、前記固定子の内側で回転可能な外径を有しかつ外周内側に複数の導体バー孔を設けた電磁鋼板を複数積層して構成され、前記複数の導体バー孔に形成される導体バーと前記導体バーを軸方向端部で短絡する両エンドリングとをアルミダイキャストで一体成型して始動用かご形導体を形成すると共に、前記導体バーの内周側に複数個の永久磁石を挿入埋設した回転子とからなる自己始動形永久磁石式同期電動機において、
前記エンドリングの内周側に端板固定用の凸起部を前記回転子の半径方向に前記アルミダイキャストで一体成型して形成し、埋設された前記永久磁石の脱落防止用の端板に前記凸起部と嵌めあうような凹部を設け、前記凸部を前記凹部に嵌め合わせした後、前記凸起部を押し潰すことにより前記端板を前記回転子の鉄心端面に固定したことを特徴とする。 In order to solve such a problem, the present invention
A stator in which a winding is wound around a stator core, and a plurality of electromagnetic steel plates having an outer diameter rotatable inside the stator and provided with a plurality of conductor bar holes inside the outer periphery, The conductor bar formed in the plurality of conductor bar holes and both end rings for short-circuiting the conductor bar at the end in the axial direction are integrally formed by aluminum die casting to form a starting cage conductor, and the conductor bar In a self-starting permanent magnet type synchronous motor composed of a rotor in which a plurality of permanent magnets are inserted and embedded on the inner peripheral side of
A protruding portion for fixing an end plate is formed on the inner peripheral side of the end ring by integrally molding the aluminum die cast in the radial direction of the rotor, and is used as an end plate for preventing the embedded permanent magnet from falling off. A concave portion that fits into the protruding portion is provided, and after fitting the convex portion into the concave portion, the end plate is fixed to the core end surface of the rotor by crushing the protruding portion. And

また、前記回転子端部のエンドリングの内周側に前記回転子の軸方向に突出する端板固定用の凸起部を前記アルミダイキャストで一体成型して形成させ、前記回転子の磁石挿入側端部の複数枚の電磁鋼板と埋設された前記永久磁石の脱落防止用の端板に前記凸起部と嵌めあうような孔を設け、前記凸起部を前記孔に嵌め合わせした後、前記凸起部を押し潰すことにより前記端板を前記回転子の鉄心端面に固定したことを特徴とする。   Further, an end plate fixing protruding portion that protrudes in the axial direction of the rotor is integrally formed with the aluminum die cast on the inner peripheral side of the end ring of the rotor end portion, and the rotor magnet is formed. After providing a hole that fits into the protruding portion on the end plate for preventing the falling of the permanent magnet embedded with a plurality of electromagnetic steel plates on the insertion side end, and fitting the protruding portion into the hole The end plate is fixed to the iron core end surface of the rotor by crushing the protruding portion.

また、前記永久磁石を磁石埋設孔に装着した後、埋設された前記永久磁石の脱落防止用の端板を前記永久磁石の挿入側端部にセットし、段付きのシャフトを前記シャフトの段付き端面と前記端板とを密着させて前記回転子に固設し、前記端板を前記回転子の鉄心端面に固定したことを特徴とする。   In addition, after the permanent magnet is mounted in the magnet embedding hole, an end plate for preventing the embedded permanent magnet from dropping off is set at the end of the permanent magnet insertion side, and the stepped shaft is stepped on the shaft. An end face and the end plate are brought into close contact with each other and fixed to the rotor, and the end plate is fixed to an iron core end face of the rotor.

また上述したように前記凸起部を押し潰すことにより前記端板を前記回転子の鉄心端面に固定した上に、更に段付きのシャフトを前記シャフトの段付き端面と前記端板とを密着させて前記回転子に固設し、前記端板を前記回転子の鉄心端面に固定したことを特徴とする。   Further, as described above, the end plate is fixed to the iron core end surface of the rotor by crushing the protruding portion, and a stepped shaft is further brought into close contact with the stepped end surface of the shaft. The end plate is fixed to the end surface of the rotor core.

また上述したように前記凸起部を押し潰すことにより前記端板を前記回転子の鉄心端面に固定した上に、更に段付きのシャフトを前記シャフトの段付き端面と前記端板とをリングを介して密着させて前記回転子に固設し、前記端板を前記回転子の鉄心端面に固定したことを特徴とする。   Further, as described above, the end plate is fixed to the iron core end surface of the rotor by crushing the protruding portion, and a stepped shaft is further connected to the stepped end surface of the shaft and the end plate. The end plate is fixed to the iron core end surface of the rotor.

また冷媒を吸い込んで圧縮し，吐き出する圧縮機構部と，この圧縮機構部を駆動する電動機部とからなる圧縮機において，前記電動機部が上述した自己始動形永久磁石式同期電動機であることを特徴とする。   Further, in a compressor comprising a compression mechanism portion that sucks and compresses refrigerant and discharges it, and an electric motor portion that drives the compression mechanism portion, the electric motor portion is the self-starting permanent magnet synchronous motor described above. And

本発明によれば、ダイキャストでかご形導体と一体化した磁石脱落の防止用端板を固定する凸起部を設け、自己始動形永久磁石式同期電動機の性能低下の影響を与えず、簡易に、丈夫に固定することができる。 According to the present invention, a protruding portion for fixing an end plate for preventing magnet dropout integrated with a squirrel-cage conductor by die-casting is provided, and the performance of the self-starting permanent magnet synchronous motor is not affected and simplified. It can be fixed firmly.

また、磁極間に非磁性体のアルミを充填されたため、磁石の磁極端部の漏磁束を低減し、自己始動形永久磁石式同期電動機効率向上の改善にも寄与することができる。   Further, since nonmagnetic aluminum is filled between the magnetic poles, the leakage magnetic flux at the magnetic pole end of the magnet can be reduced, which can contribute to the improvement of the efficiency of the self-starting permanent magnet synchronous motor.

また、電動機が高温、高圧などの厳しい運転条件に運転する場合、アルミの経年劣化による端板の脱落を防止するために、電動機のシャフトに段付きを設け、磁石脱落の防止用端板に密着させ、またはリングなどの部品を介して接触させ固定することにより、自己始動形永久磁石式同期電動機の信頼性をコストを掛けず大幅向上することができる。   Also, when the motor is operated under severe operating conditions such as high temperature and high pressure, in order to prevent the end plate from falling off due to aging of aluminum, a step is provided on the shaft of the motor, and it adheres closely to the end plate for preventing the magnet from falling off. In addition, the reliability of the self-starting permanent magnet type synchronous motor can be greatly improved without cost by contacting and fixing through a part such as a ring.

さらに本発明に係わる二次銅損なしの高効率の自己始動形永久磁石式同期電動機を搭載することにより、高効率で冷凍サイクルの冷凍能力COPが高く、また、電動機がインバータ制御せず、商用電源の直接使用ができるため、冷凍サイクルの信頼性が高い圧縮機が実現できる。   Furthermore, by installing a high-efficiency self-starting permanent magnet type synchronous motor without secondary copper loss according to the present invention, the refrigeration cycle COP of the refrigeration cycle is high-efficiency and high, and the motor is not controlled by an inverter. Since the power supply can be used directly, a compressor with high refrigeration cycle reliability can be realized.

以下、発明を実施するための最良の形態について説明する。   The best mode for carrying out the invention will be described below.

図１5は本発明の一実施形態をなす自己始動形永久磁石式同期電動機の軸方向の断面図を示す。三相巻線72を有する複数の電磁鋼板を積層して構成され固定子71を電動機のケーシング77に圧入し、積層鉄心の外周内側にアルミダイキャストで一体成型して始動用かご形導体を形成し、導体バーの内周側に複数個の永久磁石9aを挿入埋設した回転子1をシャフト34に決められた位置に焼き嵌め固定している。回転子1を自由回転させるために、シャフト34の両端部付近にベアリング75、76を取り付け、固定子71に、回転子1の積厚鉄心を合せるようにセットした後、電動機のケーシング77の両端部に、ブラケット73、74の中心部に設けた孔をベアリング75、76に嵌め合せてボルトで固定する。このように構成された電動機を台架79で支え、三相電源を三相巻線72に印加すると電動機が運転する。 FIG. 15 is a sectional view in the axial direction of a self-starting permanent magnet type synchronous motor that constitutes an embodiment of the present invention. A plurality of electromagnetic steel plates with three-phase windings 72 are laminated, the stator 71 is press-fitted into the motor casing 77, and is integrally molded by aluminum die casting inside the outer periphery of the laminated iron core to form a starting cage conductor The rotor 1 in which a plurality of permanent magnets 9a are inserted and embedded on the inner peripheral side of the conductor bar is shrink-fitted and fixed to the shaft 34 at a predetermined position. In order to rotate the rotor 1 freely, bearings 75 and 76 are attached in the vicinity of both ends of the shaft 34, and the stator 71 is set so that the thick core of the rotor 1 is aligned with the ends of the casing 77 of the motor. The holes provided in the center of the brackets 73 and 74 are fitted into the bearings 75 and 76 and fixed with bolts. The electric motor configured as described above is supported by a stand 79, and when a three-phase power source is applied to the three-phase winding 72, the electric motor is operated.

このような自己始動形永久磁石式同期電動機の回転子の鉄心では、かご形導体を有するため、電動機の始動期はかご形導体の働きで回転し、回転磁界と同速になると回転子1に装着した磁石9aが回転磁界と吸引力、反発力により電動機が同期速で回転する。かご形導体に電流がほとんどないため、電動機の二次銅損を生ぜず、電動機の効率が向上される。   Since the rotor core of such a self-starting permanent magnet type synchronous motor has a squirrel-cage conductor, the motor starts during the start of the squirrel-cage and rotates at the same speed as the rotating magnetic field. The mounted magnet 9a rotates the electric motor at a synchronous speed by the rotating magnetic field, the attractive force, and the repulsive force. Since there is almost no current in the cage conductor, there is no secondary copper loss of the motor, and the efficiency of the motor is improved.

また、一般の磁石モ-タに欠かせないインパータ制御が不要のため、電動機のコストを低減させると共に信頼性を向上させることができる。   In addition, since the inverter control that is indispensable for a general magnet motor is unnecessary, the cost of the electric motor can be reduced and the reliability can be improved.

ここで回転子１の構造について、図１〜5を用いて詳細に説明する。図１は本発明に係わる回転子の軸方向断面構成図である。図2は回転子の積層用鉄心コア、図3は磁石挿入側の端板、図4は磁石挿入の反対側の端板、図5は磁石挿入側方向から見た回転子の外形図である。   Here, the structure of the rotor 1 will be described in detail with reference to FIGS. FIG. 1 is an axial sectional configuration diagram of a rotor according to the present invention. 2 is an iron core for laminating a rotor, FIG. 3 is an end plate on the magnet insertion side, FIG. 4 is an end plate on the opposite side of the magnet insertion, and FIG. 5 is an external view of the rotor as viewed from the magnet insertion side. .

図1に示している回転子１は図2の鉄心コア１ａを用いて一定の長さに積層して構成し、鉄心コア1ａ径方向の外周側付近に導体バー孔8を設け、バー孔8内側に磁石の埋設用孔9を上下二極になるような空け、磁極間に一定幅を有するリブ10を設ける。磁石埋設孔9にダイキャストのアルミ湯の流入を防ぐため、図4に示している端板7を鉄心1の片方に取り付け、ダイキャストにより回転子鉄心1の両端に位置するエンドリング3とエンドリング4および導体バー2を一体成型されて始動用かご形導体を形成している。このとき、図3の端板6を固定するための図１において破線で示すような凸部5を磁極間リブ10の上にエンドリング4と一体化ダイキャストで形成する。一方、端板6に前記エンドリング4の凸部5と嵌めるような切り欠け部6ａを設け、磁石9ａを磁石埋設孔9に装着した後、端板6切り欠け部を前記エンドリング4凸起部5に嵌め合せて、凸起部5は前記極間リブの上にあるため、凸部5を軸方向に押し潰すことによりアルミを係止部5ａのように変形させ、図5に示しているように端板6を固定する。   The rotor 1 shown in FIG. 1 is constructed by laminating a certain length using the iron core 1a of FIG. 2, and a conductor bar hole 8 is provided near the outer peripheral side in the radial direction of the iron core 1a. Inside, a hole 9 for embedding a magnet is formed so as to have two upper and lower poles, and a rib 10 having a certain width is provided between the magnetic poles. In order to prevent the inflow of die-cast aluminum water into the magnet embedding hole 9, the end plate 7 shown in FIG. 4 is attached to one side of the iron core 1, and the end ring 3 and the end located at both ends of the rotor core 1 are die-cast. The ring 4 and the conductor bar 2 are integrally molded to form a starting cage conductor. At this time, a convex portion 5 as shown by a broken line in FIG. 1 for fixing the end plate 6 in FIG. 3 is formed on the inter-pole rib 10 by integral die casting with the end ring 4. On the other hand, the end plate 6 is provided with a notch 6a that fits with the projection 5 of the end ring 4, and after the magnet 9a is mounted in the magnet embedding hole 9, the end plate 6 is projected to the end ring 4 Since the protruding portion 5 is on the inter-electrode rib, the aluminum is deformed like the locking portion 5a by crushing the protruding portion 5 in the axial direction, as shown in FIG. The end plate 6 is fixed so that it is.

このような構造により、磁石の脱落防止の端板が簡易に固定されるため、自己始動形永久磁石式同期電動機の性能を低下せず、生産工数を減少し，生産効率を向上することができる。   With such a structure, the end plate for preventing the magnet from falling off is simply fixed, so that the performance of the self-starting permanent magnet type synchronous motor is not lowered, the number of production steps can be reduced, and the production efficiency can be improved. .

実施例2における回転子について図6〜9を用いて説明する。ここで自己始動形永久磁石式同期電動機の固定子やその他の構成は前述した図１５と同様な構成であるため、説明を省略する。図6は本発明に係わる回転子の実施例２を示す回転子の軸方向断面構成図である。図7は回転子端部の積層用部鉄心コア、図8は磁石挿入側の端板、図9は磁石挿入側方向から見た回転子の外形図である。   A rotor according to the second embodiment will be described with reference to FIGS. Here, the stator and other configurations of the self-starting permanent magnet synchronous motor are the same as those shown in FIG. FIG. 6 is an axial cross-sectional configuration diagram of a rotor showing Embodiment 2 of the rotor according to the present invention. 7 is a laminated core iron core at the rotor end, FIG. 8 is an end plate on the magnet insertion side, and FIG. 9 is an external view of the rotor as viewed from the magnet insertion side.

図6に示している回転子21は鉄心コア１ａおよび片方の端部に複数枚（１０〜３０枚程度）の図7に示している鉄心コア21ａを用いて一定の長さ（５〜１０ｍｍ程度）に積層して構成している。鉄心コア21ａ径方向の外周側付近に導体バー孔28を設け、導体バー孔28内側に磁石の埋設用孔29を上下二極分布の配置で空け、磁極間の両端に１個の導体バー孔28を含む長方形状の孔28aをそれぞれ設ける。磁石埋設孔29にダイキャストのアルミ湯の流入を防ぐため、端板7を回転子21の鉄心コア1ａの端面に取り付けた後、回転子21の両端部にダイキャスト型を取り付け、ダイキャストにより回転子鉄心21の両端に位置するエンドリング23とエンドリング24および導体バー22を一体成型されて始動用かご形導体を形成すると同時に、図8の端板26を固定するための図６において破線で示すような凸起部25をかご形導体とも一体形成する。端板26に凸起部25と嵌めるような孔26ａを設け、磁石9ａを磁石埋設孔29に装着した後、端板26の孔26ａを磁極間の凸起部25に嵌め合せて、凸起部25の先端の軸方向に押し潰すことによりアルミを係止部25ａのように変形させ、図9に示しているように端板26を固定する。   The rotor 21 shown in FIG. 6 has a certain length (about 5 to 10 mm) using the iron core 1a and a plurality (about 10 to 30) of the core 21a shown in FIG. 7 at one end. ). A conductor bar hole 28 is provided near the outer peripheral side of the core core 21a in the radial direction, a magnet embedding hole 29 is formed inside the conductor bar hole 28 in an upper and lower bipolar distribution arrangement, and one conductor bar hole is provided at both ends between the magnetic poles. A rectangular hole 28a including 28 is provided. In order to prevent the inflow of die-cast aluminum water into the magnet embedding hole 29, after attaching the end plate 7 to the end surface of the iron core 1a of the rotor 21, die-cast molds are attached to both ends of the rotor 21, The end ring 23, the end ring 24 and the conductor bar 22 positioned at both ends of the rotor core 21 are integrally molded to form a starting cage conductor, and at the same time, the broken line in FIG. 6 for fixing the end plate 26 in FIG. A protruding portion 25 as shown in FIG. 6 is integrally formed with the cage conductor. The end plate 26 is provided with a hole 26a that fits with the protruding portion 25, and the magnet 9a is fitted into the magnet embedding hole 29, and then the hole 26a of the end plate 26 is fitted with the protruding portion 25 between the magnetic poles. The aluminum is deformed like a locking portion 25a by crushing in the axial direction at the tip of the portion 25, and the end plate 26 is fixed as shown in FIG.

このような構造により、磁石の脱落防止の端板が簡易に且つ丈夫に固定され、また、磁極間に非磁性体のアルミを充填されたため、磁石の磁極端部の磁束漏れを減らせ、自己始動形永久磁石式同期電動機の生産コスト低減および性能、生産効率を向上することができる。   With such a structure, the end plate for preventing the magnet from falling off is simply and firmly fixed, and the magnetic pole between the magnetic poles is filled with non-magnetic aluminum. The production cost can be reduced and the performance and production efficiency of the permanent magnet type synchronous motor can be improved.

実施例3における回転子とシャフト組みについて図10、11を用いて説明する。ここで自己始動形永久磁石式同期電動機の固定子やその他の構成は前述した図１５と同様な構成であるため、説明を省略する。図10は磁石挿入側の端板、図11は電動機の回転子とシャフト組みの軸方向の断面図である。鉄心コア1ａで積層した回転子1の片方端面に端板40を設置し、ダイキャストにより回転子1の両端に位置するエンドリング3、4および導体バー2を一体成型されて始動用かご形導体を形成している。   A rotor and shaft assembly in the third embodiment will be described with reference to FIGS. Here, the stator and other configurations of the self-starting permanent magnet synchronous motor are the same as those shown in FIG. FIG. 10 is an end plate on the magnet insertion side, and FIG. 11 is a sectional view in the axial direction of the rotor and shaft assembly of the electric motor. An end plate 40 is installed on one end face of the rotor 1 laminated with the iron core 1a, and the end ring 3, 4 and the conductor bar 2 located at both ends of the rotor 1 are integrally molded by die casting, and the starting cage conductor Is forming.

回転子を組み立てる時、磁石9ａを磁石埋設孔9に装着し、図10に示している端板40を磁石9ａの挿入側端部に内径合せてセットした後、段付き30を設けたシャフト34を圧入、或は焼き嵌めの方法で段付きの端面30ａと密着させて固設し、端板40を固定する。   When assembling the rotor, the magnet 9a is installed in the magnet embedding hole 9, and the end plate 40 shown in FIG. 10 is set in accordance with the inner diameter of the insertion side end of the magnet 9a. Are fixed in close contact with the stepped end face 30a by press fitting or shrink fitting.

このような構造により、電動機が高温、高圧などの厳しい運転条件に運転する場合、回転子の鉄心に埋設された同極の分割磁石を着磁することにより軸方向の反発力を発生し、磁石に覆った端板に常に前記磁石の反発力を受けているようにしているため、アルミの経年劣化による端板の脱落を防止するのに有効な構造である。この結果、自己始動形永久磁石式同期電動機の信頼性をコスト掛けず大幅に向上させることができる。   With such a structure, when the motor is operated under severe operating conditions such as high temperature and high pressure, an axial repulsive force is generated by magnetizing a split magnet of the same polarity embedded in the rotor core, and the magnet Since the end plate covered with is always subjected to the repulsive force of the magnet, the structure is effective in preventing the end plate from falling off due to aging of aluminum. As a result, the reliability of the self-starting permanent magnet type synchronous motor can be greatly improved without cost.

実施例4における回転子とシャフト組みについて図12、13を用いて説明する。ここで自己始動形永久磁石式同期電動機の固定子やその他の構成は前述した図１５と同様な構成であるため、説明を省略する。図12、13は電動機の回転子と段付きシャフト34組みの軸方向の断面図である。本実施例は実施例１または実施例２で説明したアルミの凸部を軸方向に押し潰すことにより形成した係止部5ａまたは係止部25ａ設けるとともに、さらに図12に示すように回転子1の磁石挿入側の端板6をモ-タシャフトの段付き部30に、または図13に示したようにリング43などの部品を介してリング端部面43ａに接触させ固定する構造としている。   A rotor and shaft assembly according to the fourth embodiment will be described with reference to FIGS. Here, the stator and other configurations of the self-starting permanent magnet synchronous motor are the same as those shown in FIG. 12 and 13 are sectional views in the axial direction of the rotor of the electric motor and the stepped shaft 34 set. This embodiment is provided with a locking portion 5a or a locking portion 25a formed by crushing the aluminum convex portion described in the first or second embodiment in the axial direction, and further, as shown in FIG. The end plate 6 on the magnet insertion side is fixed to the stepped portion 30 of the motor shaft or to the ring end surface 43a through a part such as the ring 43 as shown in FIG.

このような構造で端板を更に強固に固定できるため、回転子１は電動機が高温、高圧などの厳しい運転条件に運転する場合、回転子の鉄心に埋設された同極の分割磁石を着磁することにより軸方向の反発力を発生し、磁石に覆った端板に常に前記磁石の反発力を受けるために生じるアルミの経年劣化による端板の脱落を、より防止できる構造となり、自己始動形永久磁石式同期電動機の信頼性をコスト掛けず更に大幅向上することができる。   Since the end plate can be more firmly fixed with such a structure, the rotor 1 is magnetized with a split magnet of the same polarity embedded in the rotor core when the motor is operated under severe operating conditions such as high temperature and high pressure. This creates a repulsive force in the axial direction, and the end plate that is covered with the magnet always receives the repulsive force of the magnet. The reliability of the permanent magnet type synchronous motor can be further improved without cost.

図14は本発明に係わる自己始動形永久磁石式同期電動機を用いた圧縮機の軸方向の断面図である。圧縮機構部では固定スクロール部材61の端板62に直立する渦巻状ラップ63と、旋回スクロール部材64の旋回スクロールの端板65に直立する渦巻状ラップ66とを噛み合わせて形成されている。そして、旋回スクロール部材64を上述した実施例１乃至4に記載した自己始動形永久磁石式同期電動機の駆動により、クランクシャフト34によって旋回運動させることで圧縮動作を行い、冷媒を吸い込み口67から吸い込んで圧縮し、吐き口68から吐出す。   FIG. 14 is a sectional view in the axial direction of a compressor using a self-starting permanent magnet synchronous motor according to the present invention. The compression mechanism portion is formed by meshing a spiral wrap 63 standing upright on the end plate 62 of the fixed scroll member 61 and a spiral wrap 66 standing upright on the end plate 65 of the turning scroll member 64. Then, the orbiting scroll member 64 is driven by the self-starting permanent magnet type synchronous motor described in the first to fourth embodiments to perform the revolving motion by the crankshaft 34, and the refrigerant is sucked from the suction port 67. Compressed and discharged from spout 68.

このように本発明に係わる二次銅損なしの高効率の自己始動形永久磁石式同期電動機を搭載した圧縮機の高効率化により、冷凍サイクルの冷凍能力COPが高くなり、また、電動機がインバータ制御せず、商用電源の直接使用ができるため、冷凍サイクルの信頼性が高くなり、製品の低コスト生産が可能になる。   Thus, by increasing the efficiency of the compressor equipped with the high efficiency self-starting permanent magnet type synchronous motor without secondary copper loss according to the present invention, the refrigeration capacity COP of the refrigeration cycle is increased, and the motor is an inverter. Since the commercial power supply can be directly used without control, the reliability of the refrigeration cycle is increased and the product can be produced at low cost.

また本発明に係わる自己始動形永久磁石式同期電動機の磁石挿入側の反対側の端部にバランスウェイト45を取り付けるとなお良い。即ち回転子にバランスウェイト45を取り付けると、自己始動形永久磁石式同期電動機の回転軸を介して負荷と繋ぐ運転をする時には（例えば圧縮機）、負荷の回転重心が電動機の回転軸中心とずれ、回転バランスが破壊され、電動機の振動や騒音などが生じ、正常な性能が発揮できなくなる。回転子の径方向のトータルモーメントをゼロになるようバランスウェイトを付けることにより電動機の回転バランスが維持され、正常な運転ができる。   Further, it is more preferable that a balance weight 45 is attached to the end of the self-starting permanent magnet type synchronous motor according to the present invention on the opposite side to the magnet insertion side. In other words, when the balance weight 45 is attached to the rotor, when the operation is connected to the load via the rotating shaft of the self-starting permanent magnet type synchronous motor (for example, the compressor), the rotational center of gravity of the load deviates from the rotating shaft center of the motor. Rotation balance is destroyed, motor vibration and noise occur, and normal performance cannot be achieved. By attaching a balance weight so that the total radial moment of the rotor becomes zero, the rotational balance of the motor can be maintained and normal operation can be performed.

このように、上述した実施例１乃至4に記載した自己始動形永久磁石式同期電動機を用いた圧縮機は、例えば冷凍サイクルと接続され、空気調和機として極めて有効である。   Thus, the compressor using the self-starting permanent magnet type synchronous motor described in the first to fourth embodiments is connected to, for example, a refrigeration cycle and is extremely effective as an air conditioner.

本発明による実施例１における回転子の軸方向の断面構成図である。It is a cross-sectional block diagram of the axial direction of the rotor in Example 1 by this invention. 本発明による実施例１における回転子鉄心コアの平面図である。It is a top view of the rotor core core in Example 1 by this invention. 本発明による実施例１における磁石挿入側の端板の平面図である。It is a top view of the end plate by the side of the magnet insertion in Example 1 by the present invention. 本発明による実施例１における磁石挿入側の反対側の端板の平面図である。It is a top view of the end plate on the opposite side to the magnet insertion side in Example 1 by this invention. 本発明による実施例１における回転子を磁石挿入側から見た外形図である。It is the external view which looked at the rotor in Example 1 by this invention from the magnet insertion side. 本発明による実施例２における回転子の軸方向の断面構成図である。It is a cross-sectional block diagram of the axial direction of the rotor in Example 2 by this invention. 本発明による実施例２における回転子鉄心コアの平面図である。It is a top view of the rotor core core in Example 2 by this invention. 本発明による実施例２における磁石挿入側の端板の平面図である。It is a top view of the end plate by the side of the magnet insertion in Example 2 by the present invention. 本発明による実施例２における磁石挿入側から見た外形図である。It is the external view seen from the magnet insertion side in Example 2 by this invention. 本発明による実施例３における磁石挿入側の端板の平面図である。It is a top view of the end plate by the side of the magnet insertion in Example 3 by the present invention. 本発明による実施例３における回転子とシャフト組みの軸方向の断面構成図である。It is a cross-sectional block diagram of the axial direction of the rotor and shaft assembly in Example 3 by this invention. 本発明による実施例４における回転子とシャフト組みの軸方向の断面構成図である。It is a cross-sectional block diagram of the axial direction of the rotor and shaft assembly in Example 4 by this invention. 本発明による実施例４における回転子とシャフト組みの軸方向の断面構成図である。It is a cross-sectional block diagram of the axial direction of the rotor and shaft assembly in Example 4 by this invention. 本発明による実施例５における圧縮機の軸方向の断面構成図である。It is a cross-sectional block diagram of the axial direction of the compressor in Example 5 by this invention. 本発明による電動機の軸方向の断面構成図である。It is a section lineblock diagram of the direction of an axis of an electric motor by the present invention.

符号の説明Explanation of symbols

1、21…回転子、1ａ、21ａ…鉄心コア、2、22…導体バー、3、4、23、24…エンドリング、5、25、…凸起部、5ａ、25ａ…係止部、6、7、26、40、…端板、8、28…導体バー孔、長方形状孔…28ａ、9、29…磁石埋設孔、9ａ…磁石、10…リブ、30…シャフト段付き、30ａ…シャフト段付き端面、34…シャフト、43…リング、43ａ…リング端部面
45…バランスウェイト、61…固定スクロール部材、62…固定スクロールの端板、
63、66…渦巻状ラップ、64…旋回スクロール部材、65…旋回スクロールの端板、67…冷媒吸い込み口、68…冷媒吐出し口、71…固定子、72…三相巻線、73、74…ブラケット、75、76…ベアリング、77…ケーシング、79…台架。 DESCRIPTION OF SYMBOLS 1, 21 ... Rotor, 1a, 21a ... Iron core, 2, 22 ... Conductor bar, 3, 4, 23, 24 ... End ring, 5, 25, ... Projection part, 5a, 25a ... Locking part, 6 7, 26, 40, ... end plate, 8, 28 ... conductor bar hole, rectangular hole ... 28a, 9, 29 ... magnet embedding hole, 9a ... magnet, 10 ... rib, 30 ... shaft stepped, 30a ... shaft Stepped end face, 34 ... Shaft, 43 ... Ring, 43a ... Ring end face
45 ... balance weight, 61 ... fixed scroll member, 62 ... end plate of fixed scroll,
63, 66 ... spiral wrap, 64 ... orbiting scroll member, 65 ... end plate of the orbiting scroll, 67 ... refrigerant inlet, 68 ... refrigerant outlet, 71 ... stator, 72 ... three-phase winding, 73, 74 ... brackets, 75, 76 ... bearings, 77 ... casings, 79 ... pedestals.

Claims (8)

固定子鉄心に巻線が巻かれた固定子と、前記固定子の内側で回転可能な外径を有しかつ外周内側に複数の導体バー孔を設けた電磁鋼板を複数積層して構成され、前記複数の導体バー孔に形成される導体バーと前記導体バーを軸方向端部で短絡する両エンドリングとをアルミダイキャストで一体成型して始動用かご形導体を形成すると共に、前記導体バーの内周側に複数個の永久磁石を挿入埋設した回転子とからなる自己始動形永久磁石式同期電動機において、前記エンドリングの内周側に端板固定用の凸起部を前記回転子の半径方向に前記アルミダイキャストで一体成型して形成し、埋設された前記永久磁石の脱落防止用の端板に前記凸起部と嵌めあうような凹部を設け、前記凸起部を前記凹部に嵌め合わせした後、前記凸部を押し潰すことにより前記端板を前記回転子の鉄心端面に固定したことを特徴とする自己始動形永久磁石式同期電動機。   A stator in which a winding is wound around a stator core, and a plurality of electromagnetic steel plates having an outer diameter rotatable inside the stator and provided with a plurality of conductor bar holes inside the outer periphery, The conductor bar formed in the plurality of conductor bar holes and both end rings for short-circuiting the conductor bar at the end in the axial direction are integrally formed by aluminum die casting to form a starting cage conductor, and the conductor bar A self-starting permanent magnet type synchronous motor comprising a rotor in which a plurality of permanent magnets are inserted and embedded on the inner peripheral side of the end ring, a protruding portion for fixing an end plate is provided on the inner peripheral side of the end ring. A concave portion that is formed by integrally molding the aluminum die cast in the radial direction and fits the protruding portion on the embedded end plate for preventing the permanent magnet from falling off is provided, and the protruding portion is formed in the concave portion. After fitting, crush the convex part More self-starting permanent magnet synchronous motor, characterized in that the end plate is fixed to the core end face of the rotor. 固定子鉄心に巻線が巻かれた固定子と、前記固定子の内側で回転可能な外径を有しかつ外周内側に複数の導体バー孔を設けた電磁鋼板を複数積層して構成され、前記複数の導体バー孔に形成される導体バーと前記導体バーを軸方向端部で短絡する両エンドリングとをアルミダイキャストで一体成型して始動用かご形導体を形成すると共に、前記導体バーの内周側に複数個の永久磁石を挿入埋設した回転子とからなる自己始動形永久磁石式同期電動機において、前記回転子端部のエンドリングの内周側に前記回転子の軸方向に突出する端板固定用の凸起部を前記アルミダイキャストで一体成型して形成させ、前記回転子の磁石挿入側端部の複数枚の電磁鋼板と埋設された前記永久磁石の脱落防止用の端板に前記凸起部と嵌めあうような孔を設け、前記凸起部を前記孔に嵌め合わせした後、前記凸起部を押し潰すことにより前記端板を前記回転子の鉄心端面に固定したことを特徴とする自己始動形永久磁石式同期電動機。   A stator in which a winding is wound around a stator core, and a plurality of electromagnetic steel plates having an outer diameter rotatable inside the stator and provided with a plurality of conductor bar holes inside the outer periphery, The conductor bar formed in the plurality of conductor bar holes and both end rings for short-circuiting the conductor bar at the end in the axial direction are integrally formed by aluminum die casting to form a starting cage conductor, and the conductor bar In a self-starting permanent magnet type synchronous motor comprising a rotor in which a plurality of permanent magnets are inserted and embedded on the inner peripheral side of the rotor, it protrudes in the axial direction of the rotor on the inner peripheral side of the end ring at the end of the rotor A protruding portion for fixing the end plate is formed by integrally molding with the aluminum die cast, and a plurality of electromagnetic steel plates at the magnet insertion side end of the rotor and an end for preventing the permanent magnet embedded from falling off A hole is provided in the plate to fit the protruding part. Wherein after the protrusion portion is fitted into the hole, the self-starting permanent magnet synchronous motor, characterized in that fixing the end plate on the core end face of the rotor by crushing the protrusion portion. 固定子鉄心に巻線が巻かれた固定子と、前記固定子の内側で回転可能な外径を有しかつ外周内側に複数の導体バー孔を設けた電磁鋼板を複数積層して構成され、前記複数の導体バー孔に形成される導体バーと前記導体バーを軸方向端部で短絡する両エンドリングとをアルミダイキャストで一体成型して始動用かご形導体を形成すると共に、前記導体バーの内周側に複数個の永久磁石を挿入埋設した回転子とからなる自己始動形永久磁石式同期電動機において、前記永久磁石を磁石埋設孔に装着した後、埋設された前記永久磁石の脱落防止用の端板を前記永久磁石の挿入側端部にセットし、段付きのシャフトを前記シャフトの段付き端面と前記端板とを密着させて前記回転子に固設し、前記端板を前記回転子の鉄心端面に固定したことを特徴とする自己始動形永久磁石式同期電動機。   A stator in which a winding is wound around a stator core, and a plurality of electromagnetic steel plates having an outer diameter rotatable inside the stator and provided with a plurality of conductor bar holes inside the outer periphery, The conductor bar formed in the plurality of conductor bar holes and both end rings for short-circuiting the conductor bar at the end in the axial direction are integrally formed by aluminum die casting to form a starting cage conductor, and the conductor bar In a self-starting permanent magnet type synchronous motor comprising a rotor in which a plurality of permanent magnets are inserted and embedded on the inner peripheral side of the permanent magnet, after the permanent magnets are installed in the magnet embedding holes, the embedded permanent magnets are prevented from falling off An end plate for the permanent magnet is set on the insertion side end of the permanent magnet, a stepped shaft is fixed to the rotor with the stepped end surface of the shaft being in close contact with the end plate, and the end plate is fixed to the rotor. It is fixed to the iron core end face of the rotor. That self-starting type permanent magnet synchronous motor. 請求項１又は2に記載した自己始動形永久磁石式同期電動機において、更に段付きのシャフトを前記シャフトの段付き端面と前記端板とを密着させて前記回転子に固設し、前記端板を前記回転子の鉄心端面に固定したことを特徴とする自己始動形永久磁石式同期電動機。   3. The self-starting permanent magnet type synchronous motor according to claim 1 or 2, further comprising a stepped shaft fixed to the rotor with the stepped end surface of the shaft closely contacting the end plate, and the end plate. Is fixed to the iron core end face of the rotor, and is a self-starting permanent magnet type synchronous motor. 請求項１又は２に記載した自己始動形永久磁石式同期電動機において、更に段付きのシャフトを前記シャフトの段付き端面と前記端板とをリングを介して密着させて前記回転子に固設し、前記端板を前記回転子の鉄心端面に固定したことを特徴とする自己始動形永久磁石式同期電動機。   The self-starting permanent magnet synchronous motor according to claim 1 or 2, further comprising a stepped shaft fixed to the rotor by closely contacting a stepped end surface of the shaft and the end plate via a ring. The self-starting permanent magnet type synchronous motor, wherein the end plate is fixed to the iron core end face of the rotor. 請求項３に記載した自己始動形永久磁石式同期電動機において、段付きのシャフトを前記シャフトの段付き端面と前記端板とを密着させて前記回転子に圧入して固設したことを特徴とする自己始動形永久磁石式同期電動機。   4. The self-starting permanent magnet type synchronous motor according to claim 3, wherein a stepped shaft is fixed by press-fitting into the rotor with the stepped end surface of the shaft and the end plate in close contact with each other. Self-starting permanent magnet synchronous motor. 請求項３に記載した自己始動形永久磁石式同期電動機において、段付きのシャフトを前記シャフトの段付き端面と前記端板とを密着させて焼き嵌めにより前記回転子に固設したことを特徴とする自己始動形永久磁石式同期電動機。   The self-starting permanent magnet type synchronous motor according to claim 3, wherein a stepped shaft is fixed to the rotor by shrink fitting with a stepped end surface of the shaft closely contacting the end plate. Self-starting permanent magnet synchronous motor. 冷媒を吸い込んで圧縮し，吐き出する圧縮機構部と，この圧縮機構部を駆動する電動機部とからなる圧縮機において，前記電動機部が請求項１から８のいづれか1つに記載された自己始動形永久磁石式同期電動機であることを特徴とする圧縮機。   A self-starting type compressor according to any one of claims 1 to 8, wherein the motor part is a compressor comprising a compression mechanism part that sucks and compresses refrigerant and discharges it, and an electric motor part that drives the compression mechanism part. A compressor, which is a permanent magnet type synchronous motor.
JP2006327293A 2006-12-04 2006-12-04 Self-starting permanent magnet type synchronous electric motor and compressor using the same Pending JP2008141892A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20092085A1 (en) * 2009-11-26 2011-05-27 Sisme Spa ARRANGEMENT OF FIXING AND CONTAINMENT OF MAGNETS IN A SELF-STARTER ELECTRIC ENGINE AND METHOD FOR OBTAINING THE LAST
KR101279190B1 (en) 2011-02-11 2013-06-27 한라비스테온공조 주식회사 Electric motor-driven compressor for vehicle
CN103855822A (en) * 2012-11-30 2014-06-11 珠海格力节能环保制冷技术研究中心有限公司 Motor and motor rotor thereof
US10027207B2 (en) 2015-08-10 2018-07-17 Toyota Jidosha Kabushiki Kaisha Shrink-fitting method for laminated rotor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58163255A (en) * 1982-03-24 1983-09-28 Okuma Mach Works Ltd Rotor for permanent magnet type synchronous motor
JPH1169675A (en) * 1997-08-26 1999-03-09 Denso Corp Winding field type rotor of dynamoelectric machine
JP2001095183A (en) * 1999-09-27 2001-04-06 Matsushita Electric Ind Co Ltd Self-start permanent magnet synchronous motor
JP2001346369A (en) * 2000-06-01 2001-12-14 Matsushita Electric Ind Co Ltd Self-excitation type synchronous motor comprising permanent magnet
JP2003274587A (en) * 2002-03-19 2003-09-26 Toyota Motor Corp Permanent-magnet motor
JP2005033893A (en) * 2003-07-10 2005-02-03 Mitsubishi Electric Corp Cooling medium compressor and its production method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58163255A (en) * 1982-03-24 1983-09-28 Okuma Mach Works Ltd Rotor for permanent magnet type synchronous motor
JPH1169675A (en) * 1997-08-26 1999-03-09 Denso Corp Winding field type rotor of dynamoelectric machine
JP2001095183A (en) * 1999-09-27 2001-04-06 Matsushita Electric Ind Co Ltd Self-start permanent magnet synchronous motor
JP2001346369A (en) * 2000-06-01 2001-12-14 Matsushita Electric Ind Co Ltd Self-excitation type synchronous motor comprising permanent magnet
JP2003274587A (en) * 2002-03-19 2003-09-26 Toyota Motor Corp Permanent-magnet motor
JP2005033893A (en) * 2003-07-10 2005-02-03 Mitsubishi Electric Corp Cooling medium compressor and its production method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20092085A1 (en) * 2009-11-26 2011-05-27 Sisme Spa ARRANGEMENT OF FIXING AND CONTAINMENT OF MAGNETS IN A SELF-STARTER ELECTRIC ENGINE AND METHOD FOR OBTAINING THE LAST
KR101279190B1 (en) 2011-02-11 2013-06-27 한라비스테온공조 주식회사 Electric motor-driven compressor for vehicle
CN103855822A (en) * 2012-11-30 2014-06-11 珠海格力节能环保制冷技术研究中心有限公司 Motor and motor rotor thereof
US10027207B2 (en) 2015-08-10 2018-07-17 Toyota Jidosha Kabushiki Kaisha Shrink-fitting method for laminated rotor

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