JP2002084691A - Sealed compressor - Google Patents
Sealed compressorInfo
- Publication number
- JP2002084691A JP2002084691A JP2001210499A JP2001210499A JP2002084691A JP 2002084691 A JP2002084691 A JP 2002084691A JP 2001210499 A JP2001210499 A JP 2001210499A JP 2001210499 A JP2001210499 A JP 2001210499A JP 2002084691 A JP2002084691 A JP 2002084691A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- compression element
- magnetic
- thickness
- rotor core
- 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.)
- Granted
Links
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Compressor (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、回転子内に磁性体
を有する圧縮機用電動機に関し、特に前記回転子の改良
構成に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor for a compressor having a magnetic material in a rotor, and more particularly to an improved structure of the rotor.
【０００２】[0002]
【従来の技術】一般に従来の圧縮機用電動機の回転子の
構造としては、特開昭５７−５２３５９号公報に記載さ
れたようなものがあった。この公報に記載されたものは
金属製のパイプの中に予め積層した回転子鉄心、磁性体
（永久磁石）を配置した後、ダイカストによってこれら
のパイプ、回転子鉄心、磁性体を一体に構成したもので
あった。2. Description of the Related Art In general, the structure of a rotor of a conventional compressor motor has been disclosed in Japanese Patent Application Laid-Open No. 57-52359. In this publication, after a rotor core and a magnetic body (permanent magnet) laminated in advance in a metal pipe, the pipe, the rotor core and the magnetic body are integrally formed by die casting. Was something.
【０００３】また他の従来技術としては、特開平２−２
４６７４８号公報に記載されたようなものがあった。こ
の公報に記載されたものも前記公報に記載されたものと
同様に金属製のパイプに中に予め積層した回転子鉄心、
磁性体（永久磁石）を配置した後、クランプピンによっ
てこれらの回転子鉄心を一体に構成したものであった。
この際、隣り合う磁性体間に空隙によるエアギャップ部
を設けて磁性体の極分離を確保し、効率の向上を図った
ものであった。As another prior art, Japanese Patent Laid-Open No. 2-2
There was one described in Japanese Patent No. 46748. A rotor core preliminarily laminated in a metal pipe similarly to the one described in this publication,
After arranging a magnetic material (permanent magnet), these rotor cores were integrally formed by a clamp pin.
In this case, an air gap portion is provided between adjacent magnetic bodies by an air gap to ensure pole separation of the magnetic bodies, thereby improving efficiency.
【０００４】また、他の従来技術としては、特公昭６０
−２３５８４号公報に記載されたようなものもあった。
この公報に記載されたものは、回転子の鉄心内に磁極に
なる磁性体を挿入（埋め込み）したものであった。特
に、この公報に記載されたものは、自己始動可能な同期
電動機に関するものであった。Another conventional technique is disclosed in Japanese Patent Publication No.
There was also one as described in JP-A-23584.
In this publication, a magnetic material that becomes a magnetic pole is inserted (embedded) in an iron core of a rotor. In particular, the one described in this publication relates to a synchronous motor capable of self-starting.
【０００５】更に、他の従来技術としては、特開平４−
１８５２４７号公報に記載されたようなものもあった。
この公報に記載されたものは、突極構造を有する回転子
鉄心の突極部に磁性体を埋め込んで回転子を構成したも
のであった。特に、この公報に記載されたものは磁性体
を埋め込んだ回転子鉄心及び回転子鉄心の両端面を覆う
端面部材を回転軸に圧入することによって一体に構成さ
せるものであった。Further, as another prior art, Japanese Patent Laid-Open No.
There was also one described in JP-A-185247.
In this publication, a rotor is formed by embedding a magnetic material in salient pole portions of a rotor core having a salient pole structure. In particular, what is described in this publication is to integrally form a rotor core in which a magnetic material is embedded and end members covering both end surfaces of the rotor core by press-fitting to a rotation shaft.
【０００６】[0006]
【発明が解決しようとする課題】このように構成された
従来の圧縮機用電動機（ブラシレスＤＣモータ）の回転
子においては、界磁を構成する磁性体としてストロンチ
ウムフェライト等のフェライト系磁石材が用いられてい
た。このフェライト系磁石材は、アルニコ系磁石材より
も保持力Ｈｃが大きく、また、原料の単位重量当たりの
価格が低い等の利点があるものの、残留磁束密度Ｂｒは
最大でも約０．４（Ｔ）と小さく、磁気エネルギー積は
小さい。そのため、ギャップの磁束数を大きくして所要
の出力を得るためには、回転子の寸法を大きくしてギャ
ップの面積を大きくとる必要がある。In the rotor of the conventional compressor motor (brushless DC motor) configured as described above, a ferrite-based magnet material such as strontium ferrite is used as a magnetic material constituting a field. Had been. This ferrite-based magnet material has advantages such as a higher holding force Hc than an alnico-based magnet material and a lower price per unit weight of the raw material, but has a residual magnetic flux density Br of at most about 0.4 (T ) And the magnetic energy product is small. Therefore, in order to obtain a required output by increasing the number of magnetic fluxes in the gap, it is necessary to increase the size of the rotor and increase the area of the gap.
【０００７】ここで、回転子鉄心の直径を変更したり、
圧縮機の密閉容器の外径を変更することは、製造設備等
の大がかりな変更に繋がるため、事実上困難である。従
って、回転子の寸法拡大は一般的には回転子の直径の拡
大よりも軸方向の寸法を拡張することで対処され、従来
のフェライト系磁石材の場合には回転子鉄心の直径Ｄと
回転軸方向の寸法Ｌとの比Ｌ／Ｄが１．２〜１．４とさ
れ、電動圧縮機の軸方向が大きくなるものであった。Here, the diameter of the rotor core is changed,
It is practically difficult to change the outer diameter of the hermetic container of the compressor because it leads to a major change in manufacturing equipment and the like. Therefore, the increase in the size of the rotor is generally dealt with by expanding the size in the axial direction rather than the increase in the diameter of the rotor, and in the case of the conventional ferrite magnet material, the diameter D of the rotor core and the rotation are increased. The ratio L / D to the dimension L in the axial direction was 1.2 to 1.4, and the axial direction of the electric compressor was large.
【０００８】本発明は、係る従来の技術的課題を解決す
るために成されたものであり、所要の出力を維持しつ
つ、圧縮機用電動機の回転子の寸法縮小を図り、その信
頼性及び運転効率を向上させることを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional technical problems, and has been made to reduce the size of a rotor of a compressor motor while maintaining a required output, thereby improving the reliability and reliability of the rotor. The purpose is to improve operation efficiency.
【０００９】[0009]
【課題を解決するための手段】本発明は、密閉容器内に
圧縮要素及びこの圧縮要素を回転軸を介して回転駆動す
る電動機を収納すると共に、圧縮要素を密閉容器の内壁
に固定される固定子と、厚さ０．３ｍｍ〜０．７ｍｍの
電磁鋼板を積厚寸法／外径が０．８前後に成るように積
層し軸受部で支持される回転軸に固定される回転子とか
ら構成し、かつ回転子は固定子から生成される磁界に応
じて回転子を回転軸を中心に回転させる希土類系磁石材
による磁性体を備えるものである。According to the present invention, a compression element and an electric motor for rotating the compression element via a rotary shaft are housed in a closed container, and the compression element is fixed to an inner wall of the closed container. And a rotor fixed to a rotating shaft supported by bearings, with electromagnetic steel sheets having a thickness of 0.3 mm to 0.7 mm stacked so that the stacked thickness / outer diameter becomes about 0.8. The rotor includes a magnetic material made of a rare-earth magnet material that rotates the rotor about a rotation axis in accordance with a magnetic field generated from the stator.
【００１０】また、磁性体の厚さ寸法ｔと回転軸方向の
寸法ｌとの比ｔ／ｌを０．０８より小さくするものであ
る。Further, the ratio t / l of the thickness t of the magnetic body to the dimension l in the rotation axis direction is made smaller than 0.08.
【００１１】図７は界磁を構成する磁性体として使用す
る永久磁石であるフィライト系磁石材と希土類系磁石材
の減磁曲線を示し、縦軸は磁束密度Ｂ、横軸は保持力Ｈ
ｃを示している。尚、同図中、破線で示したのが一般的
なフェライト系磁石材の場合、実線で示したのが一般的
な希土類系磁石材の場合で、Ｔ１は＋２５℃、Ｔ２は＋
１５０℃の各場合である。同図より分かる通り、希土類
系磁石材は、フェライト系磁石材に比して残留磁束密度
Ｂｒ及び保持力Ｈｃ共に大きく、磁気エネルギー積もき
わめて大きい。従って、磁石面積を小さくしても必要な
ギャップ磁束数を確保でき、所要の出力を得ることが可
能となる。FIG. 7 shows a demagnetization curve of a phyllite-based magnet material and a rare-earth-based magnet material which are permanent magnets used as a magnetic material constituting a field.
c is shown. In the same figure, the broken line indicates the case of a general ferrite magnet material, and the solid line indicates the case of a general rare earth magnet material. T1 is + 25 ° C., and T2 is + 25 ° C.
In each case at 150 ° C. As can be seen from the figure, the rare-earth magnet material has a larger residual magnetic flux density Br and a higher coercive force Hc than the ferrite magnet material, and has an extremely large magnetic energy product. Therefore, a necessary gap magnetic flux number can be secured even if the magnet area is reduced, and a required output can be obtained.
【００１２】そこで、本発明では積層された回転子鉄心
２６内に設ける磁性体４５を係る希土類系磁石材とした
ので、従来の如きフェライト系磁石材を用いた場合に比
して、所要の出力を維持しつつ、回転子鉄心２６の軸方
向の寸法を縮小することが可能となる。Therefore, in the present invention, since the magnetic body 45 provided in the laminated rotor core 26 is made of a rare earth magnet material, the required output power is required as compared with the case of using a conventional ferrite magnet material. , The axial dimension of the rotor core 26 can be reduced.
【００１３】特に、回転子鉄心２６の直径Ｄと回転軸６
方向の寸法Ｌとの比Ｌ／Ｄを１．１より小さくして、回
転子鉄心２６の寸法縮小を専ら回転軸６方向の寸法Ｌの
縮小に当てたので、回転子鉄心２６の直径、或いは圧縮
機Ｃの密閉容器１の外径変更による製造設備等の変更の
必要性を解消することができるようになる。In particular, the diameter D of the rotor core 26 and the rotation shaft 6
Since the ratio L / D to the dimension L in the direction is smaller than 1.1 and the reduction in the size of the rotor core 26 is exclusively used to reduce the size L in the direction of the rotation shaft 6, the diameter of the rotor core 26 or It becomes possible to eliminate the necessity of changing the manufacturing equipment and the like due to the change in the outer diameter of the sealed container 1 of the compressor C.
【００１４】さらに厚さ０．３ｍｍ〜０．７ｍｍの電磁
鋼板を用いることにより回転子の表面に生じる渦電流を
せん断することができ磁性体の温度上昇を抑制できるも
のである。Further, by using an electromagnetic steel sheet having a thickness of 0.3 mm to 0.7 mm, the eddy current generated on the surface of the rotor can be sheared, and the temperature rise of the magnetic body can be suppressed.
【００１５】また、請求項２の如く磁性体４５の厚さ寸
法ｔと回転軸６方向の寸法ｌとの比ｔ／ｌを０．０８よ
り小さくすれば、比較的高価な希土類系磁石材を用いた
ことによるコストの高騰を解消若しくは最小限に抑える
ことができる。If the ratio t / l of the thickness t of the magnetic body 45 to the dimension l in the direction of the rotating shaft 6 is made smaller than 0.08, a relatively expensive rare earth magnet material can be obtained. It is possible to eliminate or minimize the rise in cost due to the use.
【００１６】[0016]
【発明の実施の形態】以下、図面に基づき本発明の実施
例を詳述する。図１は本発明を適用する圧縮機Ｃの縦断
側面図である。この図において、１は密閉容器であり、
内部の上側に電動機（ブラシレスＤＣモータ）２、下側
にこの電動機２で回転軸を介して回転駆動される圧縮要
素３が収納されている。密閉容器１は予め２分割された
ものに電動機２、圧縮要素３を収納した後、高周波溶着
などによって密閉されたものである。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a vertical sectional side view of a compressor C to which the present invention is applied. In this figure, 1 is a closed container,
An electric motor (brushless DC motor) 2 is housed in the upper part of the inside, and a compression element 3 that is driven to rotate by the electric motor 2 via a rotating shaft is housed in the lower part. The airtight container 1 contains the electric motor 2 and the compression element 3 in a preliminarily divided into two parts and is sealed by high frequency welding or the like.
【００１７】電動機２は、密閉容器１の内壁に固定され
た固定子４と、この固定子４の内側に回転軸６を中心に
して回転自在に支持された回転子５とから構成されてい
る。そして、固定子４は回転子５に回転磁界を与える固
定子巻線７を備えている。The electric motor 2 comprises a stator 4 fixed to the inner wall of the closed casing 1 and a rotor 5 rotatably supported inside the stator 4 about a rotation shaft 6. . The stator 4 includes a stator winding 7 that applies a rotating magnetic field to the rotor 5.
【００１８】圧縮要素３は中間仕切板８で仕切られた第
１のロータリー用シリンダ９及び第２のロータリーシリ
ンダ１０を備えている。各々のシリンダ９、１０には回
転軸６で回転駆動される偏心部１１、１２が取り付けら
れており、これら偏心部１１、１２は偏心位置がお互い
に１８０度位相がずれている。The compression element 3 includes a first rotary cylinder 9 and a second rotary cylinder 10 partitioned by an intermediate partition plate 8. Eccentric portions 11 and 12 that are driven to rotate by the rotating shaft 6 are attached to the cylinders 9 and 10, respectively. The eccentric portions 11 and 12 are 180 degrees out of phase with each other.
【００１９】１３、１４はそれぞれシリンダ９、１０内
を回転する第１のローラ、第２のローラであり、それぞ
れ偏心部１１、１２の回転でシリンダ内を回る。１５、
１６はそれぞれ第１の枠体、第２の枠体であり、第１の
枠体１５は仕切板８との間にシリンダ９の閉じた圧縮空
間を形成させ、第２の枠体１６は同様に仕切板８との間
にシリンダ１０の閉じた圧縮空間を形成させている。ま
た、第１の枠体１５、第２の枠体１６はそれぞれ回転軸
６の下部を回転自在に軸支する軸受部１７、１８を備え
ている。Reference numerals 13 and 14 denote a first roller and a second roller which rotate in the cylinders 9 and 10, respectively, and rotate in the cylinder by rotation of the eccentric portions 11 and 12, respectively. 15,
Reference numeral 16 denotes a first frame and a second frame, respectively. The first frame 15 forms a closed compression space of the cylinder 9 between the first frame 15 and the partition plate 8. A closed compression space of the cylinder 10 is formed between the partition 10 and the partition plate 8. The first frame 15 and the second frame 16 are provided with bearings 17 and 18 that rotatably support the lower part of the rotating shaft 6.
【００２０】９、２０は吐出マフラーであり、それぞれ
第１の枠体１５、第２の枠体１６を覆うように取付られ
ている。尚、シリンダ９と吐出マフラー１９は第１の枠
体１５に設けられた図示しない吐出孔にて連通されてお
り、シリンダ１０と吐出マフラー２０も第２の枠体１６
に設けられた図示しない吐出孔にて連通されている。２
１は密閉容器１の外部に設けられたバイパス管であり、
吐出マフラー２０の内部に連通している。Reference numerals 9 and 20 denote discharge mufflers, which are attached so as to cover the first frame 15 and the second frame 16, respectively. The cylinder 9 and the discharge muffler 19 communicate with each other through a discharge hole (not shown) provided in the first frame 15, and the cylinder 10 and the discharge muffler 20 also communicate with the second frame 16.
Are communicated with each other through a discharge hole (not shown) provided in the nozzle. 2
Reference numeral 1 denotes a bypass pipe provided outside the closed container 1,
It communicates with the inside of the discharge muffler 20.
【００２１】２２は密閉容器１の上に設けられた吐出管
であり、２３、２４はそれぞれシリンダ９、１０へつな
がる吸入管である。また、２５は密閉ターミナルであ
り、密閉容器１の外部から固定子４の固定子巻線７へ電
力を供給するものである（密閉ターミナル２５と固定子
巻線７とをつなぐリード線は図示せず）。Reference numeral 22 denotes a discharge pipe provided on the closed vessel 1, and reference numerals 23 and 24 denote suction pipes connected to the cylinders 9 and 10, respectively. Reference numeral 25 denotes a sealed terminal for supplying electric power to the stator winding 7 of the stator 4 from outside the sealed container 1 (lead wires connecting the sealed terminal 25 and the stator winding 7 are shown in the drawing). Zu).
【００２２】図２は図１に示した回転子５の一部縦断側
面図、図３は平面図である（回転軸６に圧入する前の状
態）。各図において、２６は回転子鉄心であり、厚さ
０．３ｍｍ〜０．７ｍｍの電磁鋼板から図４の如き形状
に打ち抜いた回転子用鉄板２７を複数枚積層し、お互い
にかしめて一体に積層されている（尚、かしめによらず
に溶接にて一体化しても良い）。FIG. 2 is a partially longitudinal side view of the rotor 5 shown in FIG. 1, and FIG. 3 is a plan view (before press-fitting into the rotating shaft 6). In each of the figures, reference numeral 26 denotes a rotor core, in which a plurality of rotor iron plates 27 punched into a shape as shown in FIG. 4 from an electromagnetic steel plate having a thickness of 0.3 mm to 0.7 mm are laminated, caulked together, and integrally formed. Laminated (in addition, it may be integrated by welding without depending on caulking).
【００２３】この回転子用鉄板２７は、図４に示す如く
四極の磁極を構成する突極部２８〜３１が形成されるよ
うに電磁鋼板から打ち抜かれており、３２〜３５はそれ
ぞれの突極部２８〜３１間に突極部が形成されるように
設けられた切欠部である。このとき、各突極部２８〜３
１の頂点間の外径Ｄは４０ｍｍ〜７０ｍｍの範囲とさ
れ、実施例では例えば５０ｍｍである。The rotor iron plate 27 is stamped from an electromagnetic steel plate so as to form salient pole portions 28 to 31 forming four poles as shown in FIG. It is a cutout portion provided so that a salient pole portion is formed between the portions 28 to 31. At this time, each salient pole part 28-3
The outer diameter D between the vertices of 1 is in a range of 40 mm to 70 mm, and is, for example, 50 mm in the embodiment.
【００２４】４１〜４４は後述する磁性体４５（永久磁
石）を圧入するための挿入孔であり、各突極部２８〜３
１に対応し、回転子用鉄板２７の外周側において、回転
軸６の軸方向に沿って同心円上に穿設されている。そし
て、各挿入孔４１〜４４と隣接する突極部２８〜３１の
側壁間の狭路幅ｄは０．３ｍｍ以上０．５ｍｍ未満とさ
れている。Reference numerals 41 to 44 denote insertion holes for press-fitting a magnetic body 45 (permanent magnet) to be described later.
In the outer peripheral side of the rotor iron plate 27, a hole is formed concentrically along the axial direction of the rotating shaft 6. The narrow path width d between the side walls of the salient pole portions 28 to 31 adjacent to the insertion holes 41 to 44 is set to 0.3 mm or more and less than 0.5 mm.
【００２５】また、４６は回転子用鉄板２７の中心に形
成され、回転軸６が焼バメされる孔である。４７〜５０
は後述するかしめ用のリベット５１〜５４が通される大
きさと形状の貫通孔であり、各挿入孔４１〜４４の内側
に対応して穿設されている。５６〜５９は各回転子用鉄
板２７相互をかしめ固定するためのかしめ部であり、各
貫通孔４７〜５０とほぼ同心円上で各挿入孔４１〜４４
の間に形成されている。更に、６１〜６４は各かしめ部
５６〜５９の内側に穿設されたオイル通路を形成するた
めの孔である。Reference numeral 46 denotes a hole formed at the center of the rotor iron plate 27, in which the rotating shaft 6 is shrunk. 47-50
Is a through hole having a size and a shape through which rivets 51 to 54 for caulking, which will be described later, are passed. The through holes are formed corresponding to the insides of the insertion holes 41 to 44. Numerals 56 to 59 are caulking portions for caulking and fixing the respective iron plates 27 for the rotor, and the respective insertion holes 41 to 44 are substantially concentric with the through holes 47 to 50.
Is formed between. Further, reference numerals 61 to 64 are holes for forming oil passages formed inside the caulking portions 56 to 59.
【００２６】各回転子用鉄板２７は複数枚積層され、前
記かしめ部５６〜５９において相互にかしめられて一体
化されることにより、図５の側面図に示す如き回転子鉄
心２６が形成される。このとき、回転子鉄心２６の外径
は前述の回転子用鉄板２７の外径Ｄ（５０ｍｍ）であ
り、回転軸６方向の積層寸法Ｌは例えば４０ｍｍとされ
ている。ここで、前記外径Ｄと寸法Ｌの比Ｌ／Ｄは１．
１より小さくなるように形成し、実施例では０．８とな
る。即ち、回転軸６方向の寸法Ｌが小さくなるように設
定する。A plurality of the iron plates 27 for the rotor are laminated and caulked together at the caulking portions 56 to 59 to form a rotor core 26 as shown in the side view of FIG. . At this time, the outer diameter of the rotor core 26 is the outer diameter D (50 mm) of the rotor iron plate 27 described above, and the lamination dimension L in the direction of the rotating shaft 6 is, for example, 40 mm. Here, the ratio L / D of the outer diameter D to the dimension L is 1.
It is formed to be smaller than 1, and is 0.8 in the embodiment. That is, the dimension L in the direction of the rotating shaft 6 is set to be small.
【００２７】一方、磁性体４５は、例えばプラセオジウ
ム系磁石、若しくは表面にニッケルメッキを施したネオ
ジウム系磁石等の希土類系磁石材にて構成されており、
その外形は図６に示す如き矩形状とされている。そし
て、磁性体４５の厚さｔは例えば２．６５ｍｍとし、そ
の回転軸６方向の寸法ｌは前述の寸法Ｌと同じ４０ｍｍ
とする。ここで、前記厚さｔと寸法ｌの比ｔ／ｌは０．
０８より小さくなるように形成し、実施例では０．０６
６となる（尚、各挿入孔４１〜４４は、この磁性体４５
がきっちり圧入される大きさとされている）。On the other hand, the magnetic body 45 is made of a rare earth magnet material such as a praseodymium magnet or a neodymium magnet whose surface is plated with nickel.
Its outer shape is rectangular as shown in FIG. The thickness t of the magnetic body 45 is, for example, 2.65 mm, and the dimension 1 in the direction of the rotation axis 6 is 40 mm, which is the same as the dimension L described above.
And Here, the ratio t / l between the thickness t and the dimension l is 0.1.
08 and smaller than 0.06 in the embodiment.
6 (note that each of the insertion holes 41 to 44 is
Is exactly sized to be press-fitted).
【００２８】６６、６７は回転子鉄心２６の上下端に取
りつけられる平板状の端面部材であり、アルミや樹脂材
料等の非磁性材料により、前記回転子用鉄板２７と略同
形状に成形されている。尚、この端面部材６６、６７の
外径は前記回転子鉄心２６の外径Ｄと同一若しくは若干
小さくする。また、端面部材６６、６７には前記貫通孔
４７〜５０に対応する位置に貫通孔７１〜７４が穿設さ
れ、前記孔５９及び６１〜６４に対応する位置に孔７６
及び７７〜８０が穿設されている。Reference numerals 66 and 67 denote flat end members which are attached to the upper and lower ends of the rotor core 26, and are formed of a non-magnetic material such as aluminum or resin material into substantially the same shape as the rotor iron plate 27. I have. The outer diameter of the end face members 66, 67 is the same as or slightly smaller than the outer diameter D of the rotor core 26. Further, through holes 71 to 74 are formed in the end face members 66 and 67 at positions corresponding to the through holes 47 to 50, and holes 76 are formed at positions corresponding to the holes 59 and 61 to 64.
And 77-80 are drilled.
【００２９】そして、回転子鉄心２６の挿入孔４１〜４
４内に前記磁性体４５を圧入した後、上下の端面部材６
６、６７をセットして挿入孔４１〜４４の上下を塞ぐ。
この状態で貫通孔４７〜５０及び７１〜７４は回転子鉄
心２６及び端面部材６６、６７を回転軸６方向に沿って
貫通している。また、孔６１〜６４及び７７〜８０は回
転子鉄心２６と端面部材６６、６７を貫通している。そ
の後、前記リベット５１〜５４を各貫通孔４７〜５０及
び７１〜７４に挿通させ、上下をかしめて一体に構成す
る。尚、Ａはバランスウエイトであり、上方の端面部材
６６と共にリベット５１にて回転子鉄心２６に固定され
ている。Then, the insertion holes 41 to 4 of the rotor core 26 are formed.
After press-fitting the magnetic body 45 into the upper and lower end members 6
6 and 67 are set and the upper and lower sides of the insertion holes 41 to 44 are closed.
In this state, the through holes 47 to 50 and 71 to 74 penetrate the rotor core 26 and the end members 66 and 67 along the rotation axis 6 direction. The holes 61 to 64 and 77 to 80 penetrate the rotor core 26 and the end face members 66 and 67. Thereafter, the rivets 51 to 54 are inserted into the through holes 47 to 50 and 71 to 74, and are caulked up and down to be integrally formed. A is a balance weight, and is fixed to the rotor core 26 by rivets 51 together with the upper end face member 66.
【００３０】以上の構成で固定子２の固定子巻線７に直
流電流を通電すると、磁性体４５から生ずる磁界との反
発・吸引作用により、回転子５は固定子巻線７に印加さ
れる電圧と負荷とがバランスする速度（例えば印加電圧
を変えることによって５００ｒｐｍ〜１００００ｒｐｍ
の範囲で可変される）で前述の如く図４中時計回りに回
転する。回転子５の回転によって回転軸６は回転し、そ
れによって偏心部１１、１２が回転することにより、第
１及び第２のローラ１３、１４が回転して圧縮作用を発
揮する。When a direct current is applied to the stator winding 7 of the stator 2 in the above configuration, the rotor 5 is applied to the stator winding 7 by a repulsion / attraction effect with a magnetic field generated from the magnetic body 45. The speed at which the voltage and the load are balanced (for example, 500 rpm to 10000 rpm by changing the applied voltage)
4), and rotates clockwise in FIG. 4 as described above. The rotation of the rotor 5 causes the rotation shaft 6 to rotate, whereby the eccentric portions 11 and 12 rotate, whereby the first and second rollers 13 and 14 rotate to exert a compressing action.
【００３１】本発明では回転子鉄心２６内に設ける磁石
材４５を、フェライト系磁石材に比して残留磁束密度Ｂ
ｒ及び保持力Ｈｃ共に大きく、磁気エネルギー積もきわ
めて大きい希土類系磁石材としているので、従来の如き
フェライト系磁石材を用いた場合に比して、所要の出力
を維持しつつ、回転子鉄心２６の寸法を縮小することが
できる。According to the present invention, the magnet material 45 provided in the rotor core 26 has a residual magnetic flux density B that is smaller than that of the ferrite magnet material.
r and coercive force Hc are both large, and the magnetic energy product is extremely large. Therefore, compared with the case of using a conventional ferrite-based magnet material, the rotor core 26 maintains a required output and maintains a required output. Can be reduced in size.
【００３２】特に、前述の如く回転子鉄心２６の直径Ｄ
と回転軸６方向の寸法Ｌとの比Ｌ／Ｄを０．８前後とし
て、回転子鉄心２６の寸法縮小を専ら回転軸６方向の寸
法Ｌの縮小に当てたので、回転子鉄心２６の直径、或い
は圧縮機Ｃの密閉容器１の外径変更による製造設備等の
変更の必要性を解消することができるようになる。In particular, as described above, the diameter D of the rotor
Since the ratio L / D of the rotor core 26 to the dimension L in the direction of the rotating shaft 6 is about 0.8, and the reduction of the dimension of the rotor core 26 is exclusively used to reduce the dimension L in the direction of the rotating shaft 6, the diameter of the rotor core 26 is Alternatively, it is possible to eliminate the necessity of changing the manufacturing equipment and the like due to the change in the outer diameter of the closed container 1 of the compressor C.
【００３３】また、希土類系磁石材の係る特性を生かし
て、磁性体４５の厚さ寸法ｔと回転軸６方向の寸法ｌと
の比ｔ／ｌを０．０８より小さくすれば、比較的高価な
希土類系磁石材を用いたことによるコストの高騰を解
消、若しくは最小限に抑えることもできる。If the ratio t / l of the thickness t of the magnetic body 45 to the dimension l in the direction of the rotating shaft 6 is made smaller than 0.08 by making use of the characteristics of the rare earth magnet material, the cost is relatively high. An increase in cost due to the use of rare earth magnet materials can be eliminated or minimized.
【００３４】[0034]
【発明の効果】以上詳述した如く、本発明では積層され
た回転子鉄心内に設ける磁性体を希土類系磁石材とした
ので、従来の如きフェライト系磁石材等を用いた場合に
比して、所要の電動機出力を維持しつつ、回転子鉄心の
軸方向の寸法を縮小することができるようになる。As described above in detail, in the present invention, the magnetic material provided in the laminated rotor core is made of a rare earth magnet material, so that the magnetic material provided in the laminated rotor iron core is compared with the case of using a conventional ferrite magnet material or the like. Thus, the axial dimension of the rotor core can be reduced while maintaining the required motor output.
【００３５】特に、回転子鉄心の直径Ｄと回転軸方向の
寸法Ｌとの比Ｌ／Ｄを０．８前後とすれば、回転子鉄心
の寸法縮小を専ら回転軸方向の寸法Ｌの縮小に当てるこ
とになり、回転子鉄心の直径、或いは圧縮機の密閉容器
の外径変更による製造設備等の変更を行うことなく密閉
型圧縮機の小型化が図れるものである。In particular, if the ratio L / D of the diameter D of the rotor core to the dimension L in the direction of the rotation axis is about 0.8, the reduction of the dimension of the rotor core can be reduced only to the reduction of the dimension L in the direction of the rotation axis. This makes it possible to reduce the size of the hermetic compressor without changing the manufacturing equipment or the like by changing the diameter of the rotor core or the outer diameter of the hermetic container of the compressor.
【図１】本発明を適用する圧縮機の縦断側面図である。FIG. 1 is a vertical sectional side view of a compressor to which the present invention is applied.
【図２】本発明の回転子の一部縦断側面図である。FIG. 2 is a partial longitudinal side view of the rotor of the present invention.
【図３】本発明の回転子の平面図である。FIG. 3 is a plan view of the rotor of the present invention.
【図４】本発明の回転子を構成する回転子用鉄板の平面
図である。FIG. 4 is a plan view of a rotor iron plate constituting the rotor of the present invention.
【図５】本発明の回転子を構成する回転子鉄心の側面図
である。FIG. 5 is a side view of a rotor core constituting the rotor of the present invention.
【図６】本発明の回転子を構成する磁性体の斜視図であ
る。FIG. 6 is a perspective view of a magnetic body constituting the rotor of the present invention.
【図７】磁性体として使用される永久磁石の減磁曲線を
示す図である。FIG. 7 is a diagram showing a demagnetization curve of a permanent magnet used as a magnetic body.
Ｃ 圧縮機 ２ 電動機 ４ 固定子 ５ 回転子 ６ 回転軸 ２６ 回転子鉄心 ２７ 回転子用鉄板 ３２、３３、３４、３５ 切欠部 ４５ 磁性体 C Compressor 2 Electric motor 4 Stator 5 Rotor 6 Rotary shaft 26 Rotor core 27 Iron plate for rotor 32, 33, 34, 35 Notch 45 Magnetic body
───────────────────────────────────────────────────── フロントページの続き (72)発明者 内堀 正晴 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 (72)発明者 五十嵐 恵司郎 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 (72)発明者 新井 和彦 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 Ｆターム(参考） 3H003 AA05 AB04 AC01 AD01 CF05 5H002 AA08 AB07 AC03 AE07 5H622 CA02 CA10 CA13 DD02 PP10 PP12 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaharu Uchibori 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Keijiro Igarashi Inventor 2-chome Keihanhondori, Moriguchi-shi, Osaka No. 5-5 Sanyo Electric Co., Ltd. (72) Inventor Kazuhiko Arai 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. 3H003 AA05 AB04 AC01 AD01 CF05 5H002 AA08 AB07 AC03 AE07 5H622 CA02 CA10 CA13 DD02 PP10 PP12
Claims (2)
を回転軸を介して回転駆動する電動機を収納すると共
に、前記圧縮要素を前記密閉容器の内壁に固定される固
定子と、厚さ０．３ｍｍ〜０．７ｍｍの電磁鋼板を積厚
寸法／外径が０．８前後に成るように積層し軸受部で支
持される回転軸に固定される回転子とから構成し、かつ
前記回転子は前記固定子から生成される磁界に応じて前
記回転子を回転軸を中心に回転させる希土類系磁石材に
よる磁性体を備えることを特徴とする密閉型圧縮機。1. A compressor in which a compression element and an electric motor for rotating and driving the compression element via a rotary shaft are housed in a closed container, a stator for fixing the compression element to an inner wall of the closed container, and a thickness of 0 mm. And a rotor fixed to a rotating shaft supported by a bearing portion, wherein the rotor is formed by laminating electromagnetic steel sheets having a thickness of about 0.7 mm to an outer diameter of about 0.8. A hermetic compressor comprising a magnetic material made of a rare earth magnet material that rotates the rotor about a rotation axis in accordance with a magnetic field generated from the stator.
ｌとの比ｔ／ｌを０．０８より小さくすることを特徴と
する請求項１に記載の密閉型圧縮機。2. The hermetic compressor according to claim 1, wherein the ratio t / l of the thickness t of the magnetic body to the dimension l in the rotation axis direction is smaller than 0.08.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001210499A JP3485909B2 (en) | 1993-12-28 | 2001-07-11 | Hermetic compressor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35044493 | 1993-12-28 | ||
| JP5-350444 | 1993-12-28 | ||
| JP2001210499A JP3485909B2 (en) | 1993-12-28 | 2001-07-11 | Hermetic compressor |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000327404A Division JP3485880B2 (en) | 1993-12-28 | 2000-10-26 | Rotor of motor for compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002084691A true JP2002084691A (en) | 2002-03-22 |
| JP3485909B2 JP3485909B2 (en) | 2004-01-13 |
Family
ID=26579201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001210499A Expired - Fee Related JP3485909B2 (en) | 1993-12-28 | 2001-07-11 | Hermetic compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3485909B2 (en) |
Cited By (4)
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|---|---|---|---|---|
| JP2008022601A (en) * | 2006-07-11 | 2008-01-31 | Mitsubishi Electric Corp | Rotor, sealed compressor, and refrigerating cycle device |
| US7843101B2 (en) | 2005-12-01 | 2010-11-30 | Aichi Elec Co. | Interior permanent magnet electric motor including a rotor having circumferential surface portions with defined curve profiles |
| KR20150086480A (en) * | 2012-11-22 | 2015-07-28 | 에머슨 일렉트릭 컴파니 | Electric machines, stators and compressors and methods of manufacturing same |
| WO2020202489A1 (en) * | 2019-04-03 | 2020-10-08 | 三菱電機株式会社 | Rotor, motor, electric fan, electric vacuum cleaner, and hand-dryer device |
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| JPWO2020202489A1 (en) * | 2019-04-03 | 2021-10-14 | 三菱電機株式会社 | Rotors, motors, electric blowers, vacuum cleaners, and hand dryers |
| JP7086274B2 (en) | 2019-04-03 | 2022-06-17 | 三菱電機株式会社 | Rotors, motors, electric blowers, vacuum cleaners, and hand dryers |
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|---|---|
| JP3485909B2 (en) | 2004-01-13 |
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