JP2001020950A - High temperature superconducting magnetic bearing - Google Patents
High temperature superconducting magnetic bearingInfo
- Publication number
- JP2001020950A JP2001020950A JP11192465A JP19246599A JP2001020950A JP 2001020950 A JP2001020950 A JP 2001020950A JP 11192465 A JP11192465 A JP 11192465A JP 19246599 A JP19246599 A JP 19246599A JP 2001020950 A JP2001020950 A JP 2001020950A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- temperature superconductor
- permanent magnet
- temperature
- rotating
- 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.)
- Pending
Links
- 239000010409 thin film Substances 0.000 claims abstract description 22
- 230000001788 irregular Effects 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 239000002887 superconductor Substances 0.000 claims description 48
- 239000000758 substrate Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 4
- 238000005728 strengthening Methods 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 abstract 2
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0436—Passive magnetic bearings with a conductor on one part movable with respect to a magnetic field, e.g. a body of copper on one part and a permanent magnet on the other part
- F16C32/0438—Passive magnetic bearings with a conductor on one part movable with respect to a magnetic field, e.g. a body of copper on one part and a permanent magnet on the other part with a superconducting body, e.g. a body made of high temperature superconducting material such as YBaCuO
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、不整磁界の回転に
起因する高温超電導体の超電導現象を抑制することので
きる高温超電導磁気軸受に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-temperature superconducting magnetic bearing capable of suppressing a superconducting phenomenon of a high-temperature superconductor caused by rotation of an irregular magnetic field.
【０００２】[0002]
【従来の技術】従来から、高温超電導磁気軸受には、高
温超電導体とこの高温超電導体を冷却する冷却部とを少
なくとも有する固定部と、高温超電導体に対向する永久
磁石とこの永久磁石が発生する磁界を強化する強磁界化
回路とを少なくとも有する回転部とから構成されたもの
が知られている。なお、強磁界化回路については特願平
７−３１０３１号を参照されたい。2. Description of the Related Art Conventionally, a high-temperature superconducting magnetic bearing includes a fixed portion having at least a high-temperature superconductor and a cooling portion for cooling the high-temperature superconductor, a permanent magnet facing the high-temperature superconductor, and a permanent magnet. And a rotating unit having at least a strong magnetic field generating circuit for strengthening the magnetic field generated. For a strong magnetic field circuit, refer to Japanese Patent Application No. 7-31031.
【０００３】この固定部には、円盤状のものと円筒状の
ものとがあり、円盤状の固定部には円盤状の回転部が対
向されて回転可能に支持又は懸架される。固定部が円筒
状のものはこの固定部を内筒として、円筒状の回転部が
外筒として対向されて回転可能に支持又は懸架される。[0003] The fixed part includes a disk-shaped part and a cylindrical part. A disk-shaped rotating part is opposed to the disk-shaped fixed part and is rotatably supported or suspended. When the fixing part is cylindrical, the fixing part is used as an inner cylinder, and the cylindrical rotating part is opposed to as an outer cylinder and supported or suspended rotatably.
【０００４】その円盤状固定部と円盤状回転部とからな
る高温超電導磁気軸受を便宜上アキシアル型軸受とい
い、円筒状固定部と円筒状回転部とからなる高温超電導
磁気軸受を便宜上ラジアル型軸受という。A high-temperature superconducting magnetic bearing composed of a disk-shaped fixed part and a disk-shaped rotating part is called an axial type bearing for convenience, and a high-temperature superconducting magnetic bearing composed of a cylindrical fixed part and a cylindrical rotating part is called radial type bearing for convenience. .
【０００５】そのアキシアル型軸受では、回転軸の幾何
学的な中心軸が円盤状回転部の幾何学的な中心軸に一致
すると共に、円盤状固定部の幾何学的な中心軸に一致す
るように構成されている。そのラジアル型軸受では、円
筒状内筒固定部の幾何学的な鉛直方向中心軸に円筒状外
筒回転部の幾何学的な中心軸が一致するように構成され
ている。In the axial type bearing, the geometric center axis of the rotating shaft coincides with the geometric center axis of the disc-shaped rotating part and the geometric center axis of the disc-shaped fixed part. Is configured. The radial type bearing is configured such that the geometrical center axis of the cylindrical outer cylinder rotating portion coincides with the geometrical vertical center axis of the cylindrical inner cylinder fixing portion.
【０００６】アキシアル型軸受では、その永久磁石と強
磁界化回路とにより生成される磁界の強さが回転軸の幾
何学的な中心軸を中心にして円周方向に均一（以下、同
心円均一磁界という）になるように構成することが理想
であり、ラジアル型軸受では、その永久磁石と強磁界化
回路とにより生成される磁界の強さが円筒状外筒回転部
の幾何学的な中心軸を中心にして水平円周方向に均一
（以下、水平円周方向均一磁界という）になるように構
成することが理想である。In the axial type bearing, the strength of the magnetic field generated by the permanent magnet and the strong magnetic field generating circuit is uniform in the circumferential direction around the geometrical central axis of the rotating shaft (hereinafter referred to as a concentric uniform magnetic field). In the radial type bearing, the strength of the magnetic field generated by the permanent magnet and the strong magnetic field generating circuit is equal to the geometrical center axis of the rotating portion of the cylindrical outer cylinder. Ideally, the magnetic field is uniform in the horizontal circumferential direction (hereinafter referred to as a horizontal circumferential uniform magnetic field).
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、これら
の同心円均一磁界、水平円周方向均一磁界を生成するこ
とはあくまで理想であってこれを生成することは不可能
であり、現実には回転部の製作上の不備、不整に起因し
て不整磁界（以下、固有不整磁界という）が生じてい
る。However, it is ideal to generate such a concentric uniform magnetic field and a horizontal circumferential uniform magnetic field, and it is impossible to generate these magnetic fields. An irregular magnetic field (hereinafter referred to as an inherent irregular magnetic field) is generated due to manufacturing defects and irregularities.
【０００８】また、回転部の回転軸の幾何学的な中心軸
が厳密な意味で固定部の幾何学的な中心軸と一致して回
転しないと、同心円均一磁界、水平円周方向均一磁界で
あっても、固有不整磁界とは異なる不整磁界（以下、異
軸回転不整磁界という）が固定部の超電導体に回転磁界
として作用する。In addition, if the geometrical central axis of the rotating shaft of the rotating portion does not rotate in a strict sense in conformity with the geometrical central axis of the fixed portion, a concentric uniform magnetic field and a horizontal circumferential uniform magnetic field will occur. Even so, an irregular magnetic field different from the inherent irregular magnetic field (hereinafter, referred to as an off-axis rotational irregular magnetic field) acts as a rotating magnetic field on the superconductor of the fixed portion.
【０００９】この種の回転部不整回転磁界があると、高
温超電導磁気軸受に回転損失が発生する。更に、回転体
荷重を支持又は懸架した回転部浮上位置のフラックスク
リープに起因する経時変化とは異なる降下又は上昇とい
う経時変化が発生する。[0009] If there is an irregular rotating magnetic field of this kind in the rotating part, rotation loss occurs in the high-temperature superconducting magnetic bearing. Further, a temporal change such as a drop or a rise that differs from the temporal change caused by the flux creep of the rotating part floating position supporting or suspending the rotating body load occurs.
【００１０】これらの回転部不整回転磁界に起因する超
電導体の超電導現象を回転部不整回転磁界に起因する超
電導現象といい、この回転部不整回転磁界による超電導
体の超電導現象を抑制するために、磁石の磁性材料の品
質の向上、磁石の加工精度の向上を図る対策が講じられ
ていると共に、回転軸振動を防止するための制振装置を
設ける等の対策が行われているが、これらの対策には限
度があり、高温超電導磁気軸受はもとよりその応用シス
テム全体としての効率、コスト上の問題がある。[0010] The superconducting phenomenon of the superconductor caused by the rotating part irregular rotating magnetic field is called a superconducting phenomenon caused by the rotating part irregular rotating magnetic field. In order to suppress the superconducting phenomenon of the superconductor caused by the rotating part irregular rotating magnetic field, Measures have been taken to improve the quality of the magnetic material of the magnet and the processing accuracy of the magnet, and measures such as installing vibration dampers to prevent vibration of the rotating shaft have been taken. There are limits to the countermeasures, and there are problems with the efficiency and cost of the high-temperature superconducting magnetic bearing as well as the application system as a whole.
【００１１】本発明は、上記の事情に鑑みて為されたも
ので、その目的とするところは、回転部不整回転磁界に
よる超電導体の超電導現象を効率よく抑制することので
きる高温超電導磁気軸受を提供することにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a high-temperature superconducting magnetic bearing capable of efficiently suppressing the superconducting phenomenon of a superconductor due to a rotating magnetic field having an irregular rotating part. To provide.
【００１２】[0012]
【課題を解決するための手段】請求項１に記載の高温超
電導磁気軸受は、高温超電導体と該高温超電導体を冷却
する冷却部とを少なくとも有する固定部と、前記高温超
電導体に対向する永久磁石と該永久磁石が発生する磁界
を強化する強磁界化回路とを少なくとも有する回転部と
から構成され、前記高温超電導体の表面に不整磁界の回
転に起因する超電導現象を抑制するための薄膜体を形成
したことを特徴とする。According to a first aspect of the present invention, there is provided a high-temperature superconducting magnetic bearing, comprising: a fixed portion having at least a high-temperature superconductor and a cooling portion for cooling the high-temperature superconductor; and a permanent portion facing the high-temperature superconductor. A thin-film body comprising a rotating part having at least a magnet and a strong magnetic field generating circuit for strengthening a magnetic field generated by the permanent magnet, and configured to suppress a superconducting phenomenon caused by rotation of an irregular magnetic field on the surface of the high-temperature superconductor. Is formed.
【００１３】請求項２に記載の高温超電導磁気軸受は、
請求項１において、前記薄膜体が前記高温超電導体の表
面に直接形成されていることを特徴とする。The high-temperature superconducting magnetic bearing according to claim 2 is
In claim 1, the thin film is formed directly on the surface of the high-temperature superconductor.
【００１４】請求項３に記載の高温超電導磁気軸受は、
請求項１において、前記薄膜体が基板と該基板に形成さ
れた薄膜とからなり、前記基板が前記高温超電導体の表
面に接着されていることを特徴とする。The high-temperature superconducting magnetic bearing according to claim 3 is
2. The method according to claim 1, wherein the thin film body includes a substrate and a thin film formed on the substrate, and the substrate is bonded to a surface of the high-temperature superconductor.
【００１５】請求項４に記載の高温超電導磁気軸受は、
高温超電導体と該高温超電導体を冷却する冷却部とを少
なくとも有する固定部と、前記高温超電導体に対向する
永久磁石と該永久磁石が発生する磁界を強化する強磁界
化回路とを少なくとも有する回転部とから構成され、前
記高温超電導体は超電導材料の薄膜を積層することによ
って形成されていることを特徴とする。A high-temperature superconducting magnetic bearing according to claim 4 is
A rotating part having at least a fixed part having at least a high-temperature superconductor and a cooling part for cooling the high-temperature superconductor, a permanent magnet facing the high-temperature superconductor, and a strong magnetic field generating circuit for enhancing a magnetic field generated by the permanent magnet. And the high-temperature superconductor is formed by laminating thin films of a superconducting material.
【００１６】本発明によれば、薄膜体の電磁気的遮蔽効
果により回転部不整回転磁界の超電導体への侵入が抑制
されるので、回転部不整回転磁界に起因する高温超電導
体の超電導現象を抑制できる。According to the present invention, since the electromagnetic shielding effect of the thin film body prevents the rotating magnetic field from rotating into the superconductor, the superconducting phenomenon of the high-temperature superconductor caused by the rotating magnetic field is suppressed. it can.
【００１７】[0017]
【発明の実施の形態】図１ないし図４はこの高温超電導
磁気軸受の発明の実施の形態１の説明図である。1 to 4 are explanatory diagrams of a first embodiment of the high-temperature superconducting magnetic bearing according to the present invention.
【００１８】図１において、１はアキシアル型軸受の固
定部であり、この固定部１は図示を略す冷却装置と円盤
状高温超電導体２とから構成されている。その円盤状高
温超電導体２には円盤状の回転部３が対向される。この
回転部３は固定部１の下方に位置され、図１には固定部
１に回転部３が回転可能に懸架されている状態が示され
ているが、固定部１の上に浮かせて回転部３を設ける
と、回転部３は固定部１に回転可能に支持される。In FIG. 1, reference numeral 1 denotes a fixing portion of an axial type bearing, and this fixing portion 1 comprises a cooling device (not shown) and a disc-shaped high-temperature superconductor 2. The disk-shaped rotating part 3 is opposed to the disk-shaped high-temperature superconductor 2. The rotating part 3 is located below the fixed part 1, and FIG. 1 shows a state in which the rotating part 3 is rotatably suspended on the fixed part 1. When the portion 3 is provided, the rotating portion 3 is rotatably supported by the fixed portion 1.
【００１９】この回転部３には回転軸４が設けられると
共に、この回転軸４と同心のリング状の永久磁石体５が
設けられている。このリング状の永久磁石体５は半径方
向内方から半径方向外方に向かって順次径が増大する構
成とされ、隣接する永久磁石体５同士は図１に示すよう
に同極となるように配設され、この永久磁石体５間に例
えば強磁界化回路（鉄製のリング状の磁性体ヨーク）６
が配置されている。The rotating part 3 is provided with a rotating shaft 4 and a ring-shaped permanent magnet body 5 concentric with the rotating shaft 4. The diameter of the ring-shaped permanent magnet body 5 is sequentially increased from the inner side in the radial direction to the outer side in the radial direction, and the adjacent permanent magnet bodies 5 have the same polarity as shown in FIG. For example, between the permanent magnet bodies 5, a strong magnetic field generating circuit (iron ring-shaped magnetic yoke) 6 is provided.
Is arranged.
【００２０】このアキシアル型軸受では、その永久磁石
体５と強磁界化回路とにより生成される磁界の強さが、
回転軸４の幾何学的な中心軸Ｏ１を中心にして円周方向
に均一な磁界（同心円均一磁界）であることが望ましい
が、従来技術で述べたような理由によって回転部不整回
転磁界が生じている。なお、回転軸４の幾何学的な中心
軸Ｏ１は円盤状高温超電導体２の幾何学的な中心軸Ｏ２
に一致している。In this axial type bearing, the strength of the magnetic field generated by the permanent magnet body 5 and the strong magnetic field generating circuit is:
It is desirable that the magnetic field be uniform in the circumferential direction around the geometrical central axis O1 of the rotating shaft 4 (concentric uniform magnetic field). However, an irregular rotating magnetic field is generated due to the reason described in the prior art. ing. Note that the geometric center axis O1 of the rotating shaft 4 is the geometric center axis O2 of the disc-shaped high-temperature superconductor 2.
Matches.
【００２１】この回転部不整回転磁界は回転部３の回転
時に円盤状高温超電導体２に交番回転磁界として作用し
て、回転部不整回転磁界に起因する超電導現象が発生す
る。この回転部不整回転磁界に起因する超電導現象を抑
制するために、ここでは、円盤状高温超電導体２の表面
２Ａに高温超電導材料等の電磁気遮蔽効果を有する材料
からなる薄膜体７が図２に示すように直接形成されてい
る。The irregular rotating magnetic field of the rotating part acts as an alternating rotating magnetic field on the disc-shaped high-temperature superconductor 2 when the rotating part 3 rotates, and a superconducting phenomenon caused by the irregular rotating magnetic field of the rotating part occurs. In order to suppress the superconducting phenomenon caused by the rotating part irregular rotating magnetic field, a thin film 7 made of a material having an electromagnetic shielding effect such as a high-temperature superconducting material is provided on the surface 2A of the disc-shaped high-temperature superconductor 2 in FIG. It is formed directly as shown.
【００２２】この薄膜体７は図３に示すように基板８上
に薄膜９を形成したものを用いても良く、この図３に示
す薄膜体７は円盤状高温超電導体２の表面２Ａに接着さ
れる。また、薄膜体７を円盤状高温超電導体２の表面２
Ａに設ける代わりに、図４に示すように、超電導体材料
からなる円盤状薄膜板１０を積層して円盤状高温超電導
体２を形成しても良い。The thin film 7 may be a thin film 9 formed on a substrate 8 as shown in FIG. 3, and this thin film 7 is bonded to the surface 2A of the disc-shaped high-temperature superconductor 2 as shown in FIG. Is done. Further, the thin film 7 is placed on the surface 2 of the disc-shaped high-temperature superconductor 2.
A disk-shaped high-temperature superconductor 2 may be formed by laminating disk-shaped thin film plates 10 made of a superconductor material, as shown in FIG.
【００２３】図５は本発明に係わる高温超電導磁気軸受
の発明の実施の形態２の説明図である。FIG. 5 is an explanatory view of a high-temperature superconducting magnetic bearing according to a second embodiment of the present invention.
【００２４】この図５において、１１は円筒状内筒固定
部としての内筒を示し、１２は円筒状外筒回転部として
の外筒の内周壁に取り付けられている円筒状永久磁石体
を示している。内筒１１は中空固定部１１Ａとその内部
に液体窒素を流すための冷却通路１１Ａ’と円筒状超電
導体１１Ｂとを有する。円筒状永久磁石体１２は同径の
リング状の永久磁石板１３を積層して形成される。この
円筒状永久磁石体１２の外面には補強リング１４とロー
ター１５とが焼きバメにより設けられている。In FIG. 5, reference numeral 11 denotes an inner cylinder as a cylindrical inner cylinder fixing portion, and reference numeral 12 denotes a cylindrical permanent magnet body attached to the inner peripheral wall of the outer cylinder as a cylindrical outer cylinder rotating portion. ing. The inner cylinder 11 has a hollow fixed portion 11A, a cooling passage 11A 'for flowing liquid nitrogen therein, and a cylindrical superconductor 11B. The cylindrical permanent magnet body 12 is formed by laminating ring-shaped permanent magnet plates 13 having the same diameter. A reinforcing ring 14 and a rotor 15 are provided on the outer surface of the cylindrical permanent magnet body 12 by shrinkage fitting.
【００２５】この永久磁石板１３間にはリング状の磁性
体ヨーク１６が配置されている。隣接する永久磁石板１
３の極性は互いに同極になるようにして配列されてい
る。このラジアル型軸受では、その永久磁石板１３と強
磁界化回路とにより生成される磁界の強さが、円筒状外
筒回転部の幾何学的な中心軸Ｏ３を中心にして水平円周
方向に均一な磁界（水平円周方向均一磁界）であること
が望ましいが、従来技術で述べたような理由によって回
転部不整回転磁界が生じている。なお、符号Ｏ４は内筒
１１の鉛直方向中心軸を示している。A ring-shaped magnetic yoke 16 is arranged between the permanent magnet plates 13. Adjacent permanent magnet plate 1
The three polarities are arranged so as to have the same polarity. In this radial type bearing, the strength of the magnetic field generated by the permanent magnet plate 13 and the strong magnetic field generating circuit increases in the horizontal circumferential direction around the geometrical central axis O3 of the cylindrical outer cylinder rotating portion. A uniform magnetic field (a uniform magnetic field in the horizontal circumferential direction) is desirable, but an irregular rotating magnetic field is generated for the reason described in the related art. Note that reference numeral O4 indicates a vertical center axis of the inner cylinder 11.
【００２６】円筒状超電導体１１Ｂは内筒１１の外周内
壁面（中空固定部１１Ａと一体の外周壁１１Ｄの内壁
面）に配設され、この円筒状超電導体１１Ｂの外周面１
１Ｃには薄膜体１７が形成されている。この薄膜体１７
は発明の実施の形態１と同様の方法によって製作するこ
とが可能である。The cylindrical superconductor 11B is disposed on the outer peripheral inner wall surface of the inner cylinder 11 (the inner wall surface of the outer peripheral wall 11D integral with the hollow fixing portion 11A), and the outer peripheral surface 1 of the cylindrical superconductor 11B is provided.
A thin film body 17 is formed on 1C. This thin film 17
Can be manufactured by the same method as in the first embodiment of the invention.
【００２７】[0027]
【発明の効果】本発明によれば、以上説明したように構
成したので、薄膜体の電磁気的遮蔽効果により回転部不
整回転磁界の超電導体への侵入が抑制されるので、回転
部不整回転磁界に起因する高温超電導体の超電導現象を
抑制できる。According to the present invention, since the structure as described above is employed, the electromagnetic shielding effect of the thin film member prevents the rotating magnetic field from entering into the superconductor. The superconducting phenomenon of the high-temperature superconductor caused by the above can be suppressed.
【図１】 本発明のアキシアル型高温超電導磁気軸受の
概略構成を示す斜視図である。FIG. 1 is a perspective view showing a schematic configuration of an axial type high-temperature superconducting magnetic bearing of the present invention.
【図２】 図１に示す円筒状高温超電導体の断面図であ
る。FIG. 2 is a cross-sectional view of the cylindrical high-temperature superconductor shown in FIG.
【図３】 図１に示す円筒状高温超電導体の他の例を示
す断面図である。FIG. 3 is a sectional view showing another example of the cylindrical high-temperature superconductor shown in FIG.
【図４】 図１に示す円筒状高温超電導体の更に他の例
を示す断面図である。FIG. 4 is a sectional view showing still another example of the cylindrical high-temperature superconductor shown in FIG.
【図５】 本発明のラジアル型高温超電導磁気軸受の概
略構成を示す斜視図である。FIG. 5 is a perspective view showing a schematic configuration of a radial high-temperature superconducting magnetic bearing of the present invention.
１…固定部 ２…円盤状高温超電導体 ２Ａ…表面 ３…回転部 ５…永久磁石体 ７…薄膜体 DESCRIPTION OF SYMBOLS 1 ... Fixed part 2 ... Disc-shaped high-temperature superconductor 2A ... Surface 3 ... Rotating part 5 ... Permanent magnet body 7 ... Thin film body
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高瀬 健太郎 茨城県那珂郡東海村白方475−７ハイツか もしだ201号室 (72)発明者 樋笠 博正 香川県高松市屋島西町2109番地８ 株式会 社四国総合研究所内 Ｆターム(参考） 3J102 AA01 BA03 BA17 BA18 BA19 CA28 DA02 DA03 DA07 DA22 DA29 FA24 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kentaro Takase 475-7 Heights, Shirakata, Tokai-mura, Naka-gun, Ibaraki Pref. F-term in Shikoku Research Institute (reference) 3J102 AA01 BA03 BA17 BA18 BA19 CA28 DA02 DA03 DA07 DA22 DA29 FA24
Claims (4)
る冷却部とを少なくとも有する固定部と、前記高温超電
導体に対向する永久磁石と該永久磁石が発生する磁界を
強化する強磁界化回路とを少なくとも有する回転部とか
ら構成され、前記高温超電導体の表面に不整磁界の回転
に起因する超電導現象を抑制するための薄膜体を形成し
たことを特徴とする高温超電導磁気軸受。1. A fixed part having at least a high-temperature superconductor and a cooling part for cooling the high-temperature superconductor, a permanent magnet facing the high-temperature superconductor, and a strong magnetic field generating circuit for strengthening a magnetic field generated by the permanent magnet. A high-temperature superconducting magnetic bearing, comprising: a rotating portion having at least: a thin film for suppressing a superconducting phenomenon caused by rotation of an irregular magnetic field on a surface of the high-temperature superconductor.
温超電導体の表面に直接形成されていることを特徴とす
る高温超電導磁気軸受。2. The high-temperature superconducting magnetic bearing according to claim 1, wherein the thin film is formed directly on a surface of the high-temperature superconductor.
該基板に形成された薄膜とからなり、前記基板が前記高
温超電導体の表面に接着されていることを特徴とする高
温超電導磁気軸受。3. A high-temperature superconducting magnetic bearing according to claim 1, wherein said thin-film body comprises a substrate and a thin film formed on said substrate, and said substrate is bonded to a surface of said high-temperature superconductor. .
る冷却部とを少なくとも有する固定部と、前記高温超電
導体に対向する永久磁石と該永久磁石が発生する磁界を
強化する強磁界化回路とを少なくとも有する回転部とか
ら構成され、前記高温超電導体は超電導材料の薄膜を積
層することによって形成されていることを特徴とする高
温超電導磁気軸受。4. A fixed portion having at least a high-temperature superconductor and a cooling portion for cooling the high-temperature superconductor, a permanent magnet facing the high-temperature superconductor, and a strong magnetic field generating circuit for enhancing a magnetic field generated by the permanent magnet. A high-temperature superconducting magnetic bearing, wherein the high-temperature superconductor is formed by laminating thin films of a superconducting material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11192465A JP2001020950A (en) | 1999-07-07 | 1999-07-07 | High temperature superconducting magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11192465A JP2001020950A (en) | 1999-07-07 | 1999-07-07 | High temperature superconducting magnetic bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001020950A true JP2001020950A (en) | 2001-01-23 |
Family
ID=16291758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11192465A Pending JP2001020950A (en) | 1999-07-07 | 1999-07-07 | High temperature superconducting magnetic bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001020950A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004013504A1 (en) * | 2002-08-02 | 2004-02-12 | Koyo Seiko Co., Ltd. | Superconducting magnetic bearing |
-
1999
- 1999-07-07 JP JP11192465A patent/JP2001020950A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004013504A1 (en) * | 2002-08-02 | 2004-02-12 | Koyo Seiko Co., Ltd. | Superconducting magnetic bearing |
| US7466051B2 (en) | 2002-08-02 | 2008-12-16 | Kazuyuki Demachi | Superconducting magnetic bearing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2233707C (en) | Integrated magnetic levitation and rotation system | |
| US20010051499A1 (en) | Substrate rotating apparatus | |
| JP4024382B2 (en) | Magnetic bearing device | |
| JP2826156B2 (en) | Spindle motor | |
| KR100726016B1 (en) | Substrate rotator | |
| JP2001093967A5 (en) | ||
| TWI902384B (en) | Magnetic suspension device and magnetic suspension turntable | |
| JPH021348B2 (en) | ||
| JPS5961763A (en) | Apparatus for generating uniform magnetic field | |
| JP7600713B2 (en) | Motor | |
| TW202229146A (en) | Apparatus for rotating substrates | |
| CN103125065A (en) | Device and method for the damped, non-contact support of a coolant feed line for superconducting machines | |
| US20130207496A1 (en) | System and method for performing magnetic levitation in an energy storage flywheel | |
| JP2001020950A (en) | High temperature superconducting magnetic bearing | |
| JP2002257136A (en) | Magnetic bearing | |
| CN220254374U (en) | Magnetic suspension device and semiconductor processing equipment | |
| JP2004232738A (en) | Flywheel electric power storage device | |
| KR102424177B1 (en) | Magnetic levitation rotating apparatus and aparatus for vacuum processing | |
| US6362549B1 (en) | Magnetic bearing device | |
| JP7631970B2 (en) | Motor | |
| JP5987348B2 (en) | motor | |
| CN121025055A (en) | Rotary drive machinery with three-degree-of-freedom hybrid magnetic levitation bearing | |
| CN121025053A (en) | Five-degree-of-freedom hybrid magnetic levitation bearing, rotary drive machinery | |
| JP2004286176A (en) | Magnetic bearing device | |
| CN121025054A (en) | Three-degree-of-freedom hybrid magnetic levitation bearing, motor |