JP2649764B2 - Permanent magnet rotor of canned motor pump - Google Patents
Permanent magnet rotor of canned motor pumpInfo
- Publication number
- JP2649764B2 JP2649764B2 JP4351105A JP35110592A JP2649764B2 JP 2649764 B2 JP2649764 B2 JP 2649764B2 JP 4351105 A JP4351105 A JP 4351105A JP 35110592 A JP35110592 A JP 35110592A JP 2649764 B2 JP2649764 B2 JP 2649764B2
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- rotor
- pipe
- impeller
- chamber
- 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
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Brushless Motors (AREA)
- Motor Or Generator Frames (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はキャンドモータポンプ、
特に温水循環ポンプ等に適するキャンドモータポンプに
使用される永久磁石回転子に関するものである。The present invention relates to a canned motor pump,
Particularly, the present invention relates to a permanent magnet rotor used for a canned motor pump suitable for a hot water circulation pump or the like.
【０００２】[0002]
【従来の技術】図７により従来技術の内容・構成を説明
する。図７は従来より実施されているキャンドモータポ
ンプの構造例を示す断面図で本発明の出願人が特願平３
−１０８１４０号で出願したものである。該例では、モ
ータケーシング２とカップ状隔壁５との間の空間が固定
子室でここに駆動モータの固定子１が配置され、前記隔
壁５の反対側の面とポンプケーシング６との間の空間が
回転子室４及びこれと連接するポンプ室８で、ここに回
転子とこれと一体を成すインペラ９が配置されている。2. Description of the Related Art The contents and structure of the prior art will be described with reference to FIG. FIG. 7 is a sectional view showing an example of the structure of a conventional canned motor pump.
-108140. In this example, the space between the motor casing 2 and the cup-shaped partition 5 is a stator chamber, in which the stator 1 of the drive motor is disposed, and the space between the opposite surface of the partition 5 and the pump casing 6 is provided. The space is a rotor chamber 4 and a pump chamber 8 connected thereto, in which a rotor and an impeller 9 integral therewith are arranged.
【０００３】そして流体の通路となるポンプ室８は、流
体の出入り口１８を除いて気密構造とする為、前記隔壁
５とポンプケーシング６との当接面には例示のＯリング
７のようなシール部材が併用されている。Since the pump chamber 8 serving as a fluid passage has an airtight structure except for the fluid inlet / outlet port 18, a sealing surface such as an O-ring 7 is provided on the contact surface between the partition wall 5 and the pump casing 6. The members are used together.
【０００４】前記インペラ９から伸長するボス部９−１
の内周面端には軸受１３が装着され、該軸受１３により
回転子永久磁石１０と一体を成す前記インペラ９を回転
自在に支承する軸１４は、その両端が前記隔壁５の底面
５−１の中央に形成された軸保持部５−２と、その反対
側では前記ポンプケーシング６の中心部で複数の足６−
１と一体の軸保持部６−２で固着保持さている。A boss 9-1 extending from the impeller 9
A shaft 13 for rotatably supporting the impeller 9 which is integral with the rotor permanent magnet 10 by means of the bearing 13 is mounted on the inner peripheral end of the shaft 14 at both ends thereof. And a plurality of feet 6-6 at the center of the pump casing 6 on the opposite side.
1 and is fixedly held by a shaft holding portion 6-2 integral with the shaft 1.
【０００５】該例に示すキャンドモータポンプは、ポン
プ室８の内部で流体に曝される回転子をインペラ９と一
体形成する手段として、前記インペラから伸長する円筒
状ボス部の外周面に同心に回転子ヨークを配設し、該回
転子ヨークの外周面に等間隔に複数のセグメント形永久
磁石を配置してこれ等を一体的に樹脂成型しており、回
転部分の外側部分に配置される永久磁石の固着保持を確
実とする為、当該永久磁石の外周面を覆う樹脂で形成さ
れた回転子カバーの厚みを多めにせざるを得なかった。In the canned motor pump shown in this example, a rotor exposed to a fluid inside a pump chamber 8 is formed integrally with an impeller 9 so as to be concentric with the outer peripheral surface of a cylindrical boss extending from the impeller. A rotor yoke is arranged, a plurality of segment-shaped permanent magnets are arranged at equal intervals on an outer peripheral surface of the rotor yoke, and these are integrally molded with resin, and are arranged on an outer portion of the rotating portion. In order to secure the permanent magnet, it is necessary to increase the thickness of the rotor cover formed of a resin covering the outer peripheral surface of the permanent magnet.
【０００６】[0006]
【発明が解決しようとする課題】上述の如き従来の構成
においては、回転子と固定子のとの間の空隙を大きくせ
ざるを得ず効率の低下を回避出来ない他、樹脂成型によ
る回転子カバーの強度的信頼性も充分でないという問題
があった。In the conventional structure as described above, the air gap between the rotor and the stator must be increased, the efficiency cannot be reduced, and the rotor formed by resin molding cannot be avoided. There was a problem that the strength reliability of the cover was not sufficient.
【０００７】[0007]
【課題を解決するための手段】本発明に成るキャンドモ
ータポンプに使用される永久磁石回転子は前記インペラ
から伸長する円筒状ボス部と、該円筒状ボス部外周に同
心に配設される回転子ヨークと、該回転子ヨークの外周
面に等間隔に配置される複数のセグメント形永久磁石と
を設けたものにおいて、該永久磁石の外周面を覆う非磁
性体金属薄肉部材のパイプでその内径は前記永久磁石の
外径より僅かに大きく、かつ該パイプの両端部を除く部
分に軸中心方向に突出する複数の小突起を形成し、該小
突起の先端が前記永久磁石の外周面に当接するように
し、前記回転子ヨークと、永久磁石と、パイプとを樹脂
で前記インペラと一体成形するように構成される。The permanent magnet rotor used in the canned motor pump according to the present invention has a cylindrical boss extending from the impeller and a rotary concentrically disposed on the outer periphery of the cylindrical boss. A rotor yoke, and a plurality of segmented permanent magnets arranged at equal intervals on the outer peripheral surface of the rotor yoke, wherein the inner diameter of the pipe is a nonmagnetic thin metal member covering the outer peripheral surface of the permanent magnet. Has a plurality of small projections slightly larger than the outer diameter of the permanent magnet and protruding in the axial center direction at portions except for both ends of the pipe, and the tips of the small projections contact the outer peripheral surface of the permanent magnet. The rotor yoke, the permanent magnet, and the pipe are integrally formed of resin with the impeller.
【０００８】[0008]
【作 用】上述の如き構成においては、永久磁石の保持
手段を薄い部材として固定子と回転子との間の空隙を小
さく出来るので効率向上を実現すると共に、可撓性を備
える小突起の先端で押圧する事でその寸法誤差を吸収し
ながら確実に永久磁石を押圧保持できる如き作用効果が
ある。In the above construction, since the space between the stator and the rotor can be reduced by making the holding means for the permanent magnet thin, the efficiency can be improved, and the tip of the small protrusion having flexibility is realized. There is an operational effect that the permanent magnet can be reliably pressed and held while absorbing the dimensional error by pressing.
【０００９】[0009]
【実施例】以下図面によって本発明になる永久磁石回転
子の構造を説明する。図１は本発明になるキャンドポン
プモータの永久磁石回転子の第１の実施例の構造を示す
断面図で、２０は複数のセグメント形永久磁石、１１は
回転子ヨーク、９−１はインペラーのボス部、２１はス
テンレス鋼のパイプ、２１−１は前記パイプの内周面に
軸心に向いかつ円周方向に長く設けた複数の小突起であ
る。図２はパイプ２１の単体の斜視図で、其の内径部寸
法は、永久磁石２０の外径寸法より僅かに大きく形成さ
れ、パイプの内周面に設けた複数の小突起２１−１の内
径寸法は、永久磁石２０の外径寸法より僅かに小さく形
成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a permanent magnet rotor according to the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing the structure of a first embodiment of a permanent magnet rotor of a canned pump motor according to the present invention, wherein 20 is a plurality of segment type permanent magnets, 11 is a rotor yoke, and 9-1 is an impeller. The boss portion, 21 is a stainless steel pipe, and 21-1 are a plurality of small projections provided on the inner peripheral surface of the pipe, extending in the axial direction and circumferentially long. FIG. 2 is a perspective view of a single body of the pipe 21. The inner diameter of the pipe 21 is slightly larger than the outer diameter of the permanent magnet 20, and the inner diameter of the plurality of small protrusions 21-1 provided on the inner peripheral surface of the pipe. The size is formed slightly smaller than the outer diameter of the permanent magnet 20.
【００１０】図１に示した永久磁石回転子は、回転子ヨ
ーク１１の外周面に複数（図示の例では４個）のセグメ
ント形永久磁石２０を当接し、ステンレス鋼のパイプ２
１の中に前記の回転子ヨーク１１と永久磁石２０とを当
接した合体物を圧入すると、前記パイプ２１の内周面に
突出した複数の小突起２１−１の内周面のみが永久磁石
２０の外周面に当接し、前記パイプ２１の他の部分は全
て永久磁石２０の外周面とは離れている。従って焼結品
である永久磁石２０の外径寸法の不整は前記パイプの小
突起２１−１の有する弾性により吸収されパイプの真円
度を損なう事が無く、前記パイプ２１に回転子ヨーク１
１と永久磁石２０とを圧入した後に樹脂成形機の金型に
挿入して樹脂を注入すると、インペラ９とインペラのボ
ス部９−１と永久磁石２０と回転子ヨーク１１とを一体
的に樹脂で成型したキャンドモータポンプの永久磁石回
転子が完成する。尚、図１においては小突起２１−１が
パイプの円周方向に長く連続して設けてあるが、断続し
て連なる短い小突起から成るように形成しても良い。In the permanent magnet rotor shown in FIG. 1, a plurality (four in the illustrated example) of segment-shaped permanent magnets 20 abut on the outer peripheral surface of a rotor yoke 11, and a stainless steel pipe 2 is used.
When a united product in which the rotor yoke 11 and the permanent magnet 20 are brought into contact with each other is press-fitted into the pipe 1, only the inner peripheral surface of the plurality of small projections 21-1 protruding from the inner peripheral surface of the pipe 21 is a permanent magnet. The other part of the pipe 21 is in contact with the outer peripheral surface of the permanent magnet 20, and is separated from the outer peripheral surface of the permanent magnet 20. Therefore, irregularities in the outer diameter of the sintered permanent magnet 20 are absorbed by the elasticity of the small projections 21-1 of the pipe without impairing the roundness of the pipe.
After press-fitting the resin 1 and the permanent magnet 20 and inserting the resin into the mold of the resin molding machine and injecting the resin, the impeller 9, the boss portion 9-1 of the impeller, the permanent magnet 20, and the rotor yoke 11 are integrally formed with the resin. The permanent magnet rotor of the canned motor pump molded in is completed. In FIG. 1, the small projections 21-1 are long and continuously provided in the circumferential direction of the pipe. However, the small projections 21-1 may be formed of short small projections intermittently connected.
【００１１】本発明の第２の実施例について説明する。
図３は第２の実施例に使用するステンレス鋼で形成さ
れたパイプ単体の斜視図で、該パイプ２２の内径寸法は
永久磁石２０の外径寸法より僅かに大きく形成され、両
端を除く内周面に軸心に向いかつ軸方向に伸びる複数の
小突起２２−１を、前記パイプの内周側に設ける複数
（図示の例では４個）のセグメント形永久磁石の接合部
に対向する位置に設けてある。図４は第２の実施例を示
す一部断面図、図５は図４のＡ−Ａ線に沿った断面図
で、円筒形の回転子ヨーク１１の外周に複数のセグレン
ト形永久磁石２０を当接し、前記パイプ２２に、其の内
周面に設けた小突起２２−１の位置に前記複数のセグメ
ント形永久磁石２０を其の隣接した接合部の面取り面の
位置を合わせて圧入し、前記セグメント形永久磁石２０
と回転子ヨーク１１とを圧接固着した後に樹脂成形機の
金型に挿入して樹脂を注入すると、インペラ９とインペ
ラのボス部９−１と永久磁石２０と回転子ヨーク１１と
を一体的に樹脂で成型したキャンドモータポンプの永久
磁石回転子が完成する。A second embodiment of the present invention will be described.
FIG. 3 is a perspective view of a single pipe made of stainless steel used in the second embodiment. The inner diameter of the pipe 22 is formed slightly larger than the outer diameter of the permanent magnet 20, and the inner circumference except for both ends is formed. A plurality of small protrusions 22-1 extending toward the axis and extending in the axial direction are provided on the inner surface of the pipe at positions facing the joints of a plurality of (four in the illustrated example) segment-shaped permanent magnets. It is provided. FIG. 4 is a partial sectional view showing the second embodiment, and FIG. 5 is a sectional view taken along line AA of FIG. Abuts on the pipe 22 and press-fits the plurality of segment-shaped permanent magnets 20 to the positions of the small protrusions 22-1 provided on the inner peripheral surface thereof, with the positions of the chamfered surfaces of the adjacent joints aligned, The segment type permanent magnet 20
After the resin and the rotor yoke 11 are pressed and fixed to each other and inserted into a mold of a resin molding machine to inject resin, the impeller 9, the boss portion 9-1 of the impeller, the permanent magnet 20, and the rotor yoke 11 are integrally formed. The permanent magnet rotor of the canned motor pump molded with resin is completed.
【００１２】図３に示した小突起２２−１はパイプの軸
方向に長く連続して設けてあるが、図６に示すように断
続して連なる短い小突起２２−２から成るように形成し
ても良い。Although the small projections 22-1 shown in FIG. 3 are provided continuously long in the axial direction of the pipe, they are formed so as to consist of short small projections 22-2 intermittently connected as shown in FIG. May be.
【００１３】[0013]
【発明の効果】本発明に成るキャンドモータポンプの永
久磁石回転子は、上記のような構成で複数のセグメント
形永久磁石の外周面を非磁性体金属薄肉部材のパイプで
覆い、該パイプの内周面に突出させた小突起を前記永久
磁石の外周面に当接し、又は前記小突起を軸方向に長く
形成してセグメント形永久磁石の隣接した接合部の位置
に合わせて設け、回転子ヨークと、セグメント形永久磁
石と、パイプとを樹脂でインペラと一体に成形してある
ので、セグメント形永久磁石の外径寸法の不整がパイプ
の小突起の弾性により吸収され真円が保たれているから
固定子の内径と回転子の外径との間の空隙の長さを短く
することができるのでモータの効率を高くし、かつ信頼
度の高い永久磁石回転子を得ることができる効果があ
る。According to the permanent magnet rotor of the canned motor pump according to the present invention, the outer peripheral surface of the plurality of segment-shaped permanent magnets is covered with a pipe made of a non-magnetic metal thin member in the above-described configuration. A small protrusion protruding from the peripheral surface abutting on the outer peripheral surface of the permanent magnet, or the small protrusion is formed to be long in the axial direction and provided in accordance with the position of the adjacent joint portion of the segment-shaped permanent magnet; And the segment-shaped permanent magnet and the pipe are molded integrally with the impeller with resin, so irregularities in the outer diameter of the segment-shaped permanent magnet are absorbed by the elasticity of the small projections of the pipe, and a perfect circle is maintained. Therefore, the length of the gap between the inner diameter of the stator and the outer diameter of the rotor can be shortened, so that there is an effect that the efficiency of the motor is increased and a highly reliable permanent magnet rotor can be obtained. .
【図１】本発明に成るキャンドモータポンプの永久磁石
回転子の第１の例を示す一部断面図である。FIG. 1 is a partial sectional view showing a first example of a permanent magnet rotor of a canned motor pump according to the present invention.
【図２】図１に示す例のパイプ単体の斜視図である。FIG. 2 is a perspective view of a single pipe of the example shown in FIG.
【図３】本発明になるキャンドモータポンプの永久磁石
回転子の第２の例のパイプ単体の斜視図である。FIG. 3 is a perspective view of a single pipe of a second embodiment of the permanent magnet rotor of the canned motor pump according to the present invention.
【図４】本発明に成るキャンドモータポンプの永久磁石
回転子の第２の例を示す一部断面図である。FIG. 4 is a partial sectional view showing a second example of the permanent magnet rotor of the canned motor pump according to the present invention.
【図５】図４のＡ−Ａ’線に沿った断面図である。FIG. 5 is a sectional view taken along the line A-A ′ of FIG. 4;
【図６】本発明になるキャンドモータポンプの永久磁石
回転子の第２の例のパイプ単体の別の例の斜視図であ
る。FIG. 6 is a perspective view of another example of the pipe alone of the second example of the permanent magnet rotor of the canned motor pump according to the present invention.
【図７】従来より実施されているキャンドモータポンプ
の構造を示す断面図である。FIG. 7 is a cross-sectional view showing a structure of a conventionally implemented canned motor pump.
１ ：固定子 ２ ：モータケーシング ３ ：固定子室 ４ ：回転子室 ５ ：隔壁 ５ー１：底面 ５ー２：一方の軸保持部 ５ー３：円筒部 ６ ：ポンプケーシング ６ー１：複数の足 ６ー２：もう一方の軸保持部 ７ ：Ｏリング ８ ：ポンプ室 ９ ：インペラ ９ー１：インペラのボス部 １０ ：永久磁石 １１ ：回転子ヨーク １２ ：回転子カバー １３ ：軸受 １４ ：軸 １８ ：温水の出入り口 ２０ ：セグメント形永久磁石 ２１ ：ステンレス鋼のパイプ ２１−１：パイプ２０の内周面に設けた円周方向に伸び
る小突起 ２２ ：ステンレス鋼のパイプ ２２−１：パイプ２２の内周面に設けた軸方向に伸びる
小突起 ２２−２：断続して設けられた軸方向に伸びる小突起1: Stator 2: Motor casing 3: Stator chamber 4: Rotor chamber 5: Partition wall 5-1: Bottom surface 5-2: One shaft holding section 5-3: Cylindrical section 6: Pump casing 6-1: Multiple 6-2: The other shaft holding part 7: O-ring 8: Pump chamber 9: Impeller 9-1: Boss part of impeller 10: Permanent magnet 11: Rotor yoke 12: Rotor cover 13: Bearing 14: Shaft 18: Hot water inlet / outlet 20: Segment type permanent magnet 21: Stainless steel pipe 21-1: Small projection provided on the inner peripheral surface of pipe 20 and extending in the circumferential direction 22: Stainless steel pipe 22-1: Pipe 22 22-2: Small projections extending in the axial direction provided intermittently provided on the inner peripheral surface of
Claims (5)
するモータケーシング及びカップ状隔壁と共に、インペ
ラと一体を成す前記モータの回転子収納用回転子室及び
該開回転子室に連接する前記インペラを収納するポンプ
室を形成するポンプケーシングとを備えるキャンドモー
タポンプに使用される永久磁石回転子で、前記インペラ
から伸長する円筒状ボス部と、該円筒状ボス部外周に同
心に配設される回転子ヨークと、該回転子ヨークの外周
面に等間隔に配置される複数のセグメント形永久磁石と
を設けたものにおいて、該永久磁石の外周面を覆う非磁
性体金属薄肉部材のパイプでその内径は前記永久磁石の
外径より僅かに大きく、かつ該パイプの両端部を除く部
分に軸中心方向に突出する複数の小突起を形成し、該小
突起の先端が前記永久磁石の外周面に当接するように
し、前記回転子ヨークと、永久磁石と、パイプとを樹脂
で前記インペラと一体成形されていること、を特徴とす
るキャンドモータポンプの永久磁石回転子。1. A motor housing and a cup-shaped partition forming a stator housing stator chamber of a drive motor, and are connected to the rotor housing rotor chamber and the open rotor chamber of the motor which are integral with the impeller. A permanent magnet rotor for use in a canned motor pump including a pump casing forming a pump chamber for accommodating the impeller, and a cylindrical boss extending from the impeller and disposed concentrically around the outer periphery of the cylindrical boss. Provided with a rotor yoke and a plurality of segment-shaped permanent magnets arranged at equal intervals on the outer peripheral surface of the rotor yoke, and a pipe made of a non-magnetic thin metal member covering the outer peripheral surface of the permanent magnet. The inner diameter is slightly larger than the outer diameter of the permanent magnet, and a plurality of small protrusions projecting in the direction of the axial center are formed at portions other than both ends of the pipe, and the tips of the small protrusions are So as to abut against the outer peripheral surface of the permanent magnet, the rotor yoke and the permanent magnet and the permanent magnet rotor of a canned motor pump and pipes that are formed integrally with the impeller in the resin, characterized by.
円周方向に長い小突起であること、を特徴とする請求項
１に記載のキャンドモータポンプの回転子。2. A plurality of small projections formed on the pipe,
The rotor of the canned motor pump according to claim 1, wherein the rotor is a small protrusion that is long in a circumferential direction.
円周方向に断続して連なる短い小突起であること、を特
徴とする請求項１に記載のキャンドモータポンプの永久
磁石回転子。3. A plurality of small projections formed on the pipe,
2. The permanent magnet rotor for a canned motor pump according to claim 1, wherein the small projections are intermittently continuous in a circumferential direction.
するモータケーシング及びカップ状隔壁と共に、インペ
ラと一体を成す前記モータの回転子収納用回転子室及び
該開回転子室に連接する前記インペラを収納するポンプ
室を形成するポンプケーシングとを備えるキャンドモー
タポンプに使用される永久磁石回転子で、前記インペラ
から伸長する円筒状ボス部と、該円筒状ボス部外周に同
心に配設される回転子ヨークと、該回転子ヨークの外周
面に等間隔に配置される複数のセグメント形永久磁石と
を設けたものにおいて、該永久磁石の外周面を覆う非磁
性体金属薄肉部材のパイプでその内径は前記永久磁石の
外径より僅かに大きく、かつ該パイプの両端部を除く部
分に軸中心方向に突出する前記セグメント形永久磁石と
同数の小突起を形成し、該小突起が前記永久磁石の隣接
した接合部に当接するようにし、前記回転子ヨークと、
永久磁石と、パイプとを樹脂で前記インペラと一体成形
されていること、を特徴とするキャンドモータポンプの
永久磁石回転子。4. A motor housing and a cup-shaped partition forming a stator housing stator chamber of a drive motor, and are connected to the rotor housing rotor chamber and the open rotor chamber of the motor which are integral with the impeller. A permanent magnet rotor for use in a canned motor pump including a pump casing forming a pump chamber for accommodating the impeller, and a cylindrical boss extending from the impeller and disposed concentrically around the outer periphery of the cylindrical boss. Provided with a rotor yoke and a plurality of segment-shaped permanent magnets arranged at equal intervals on the outer peripheral surface of the rotor yoke, and a pipe made of a non-magnetic thin metal member covering the outer peripheral surface of the permanent magnet. The inner diameter is slightly larger than the outer diameter of the permanent magnet, and the same number of small protrusions as the segment-type permanent magnets are formed at portions other than both ends of the pipe, protruding in the axial center direction. And, so as to abut the joint the small projections adjacent said permanent magnet, said rotor yoke,
A permanent magnet rotor for a canned motor pump, wherein a permanent magnet and a pipe are integrally formed of resin with the impeller.
軸方向に断続して連なる短い小突起であること、を特徴
とする請求項４に記載のキャンドモータポンプの永久磁
石回転子。5. A plurality of small projections formed on the pipe,
5. The permanent magnet rotor of the canned motor pump according to claim 4, wherein the small projections are intermittently continuous in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4351105A JP2649764B2 (en) | 1992-12-07 | 1992-12-07 | Permanent magnet rotor of canned motor pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4351105A JP2649764B2 (en) | 1992-12-07 | 1992-12-07 | Permanent magnet rotor of canned motor pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06193583A JPH06193583A (en) | 1994-07-12 |
| JP2649764B2 true JP2649764B2 (en) | 1997-09-03 |
Family
ID=18415092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4351105A Expired - Fee Related JP2649764B2 (en) | 1992-12-07 | 1992-12-07 | Permanent magnet rotor of canned motor pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2649764B2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4665543B2 (en) * | 2005-02-14 | 2011-04-06 | パナソニック電工株式会社 | Pump and liquid supply apparatus having the same |
| JP2007043864A (en) * | 2005-08-05 | 2007-02-15 | Fujitsu General Ltd | Axial air gap synchronous machine |
| JP2007100610A (en) * | 2005-10-05 | 2007-04-19 | Nidec Shibaura Corp | Rotor for pump |
| WO2007133499A2 (en) * | 2006-05-10 | 2007-11-22 | Jones Robert M | Permanent magnet rotor with crimped sheath |
| SG175040A1 (en) | 2009-04-03 | 2011-11-28 | Robert M Jones | Over-molded liquid cooled three-stack motor |
| JP5464604B2 (en) * | 2011-09-20 | 2014-04-09 | シナノケンシ株式会社 | Motor rotor and manufacturing method thereof, inner rotor type brushless motor and manufacturing method thereof |
| JP2013132094A (en) * | 2011-12-20 | 2013-07-04 | Shimano Inc | Hub shell, rotor and bicycle power generator hub |
| EP2725688B1 (en) | 2012-10-26 | 2017-01-18 | Grundfos Holding A/S | Rotor for an electric motor |
| CN106567837A (en) * | 2016-10-31 | 2017-04-19 | 新界泵业集团股份有限公司 | Axial-flow type hot water circulating pump |
| CN106640677A (en) * | 2016-10-31 | 2017-05-10 | 新界泵业集团股份有限公司 | Permanent magnetic circulating pump with improved rotor structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5334972Y2 (en) * | 1973-06-06 | 1978-08-28 | ||
| JPS58178496U (en) * | 1982-05-26 | 1983-11-29 | 松下電器産業株式会社 | magnetic pump |
| JPH0776559B2 (en) * | 1985-06-03 | 1995-08-16 | 三洋電機株式会社 | Rotor for pump |
-
1992
- 1992-12-07 JP JP4351105A patent/JP2649764B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06193583A (en) | 1994-07-12 |
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