CN211429104U - Stator and rotor structure of magnetic suspension motor - Google Patents
Stator and rotor structure of magnetic suspension motor Download PDFInfo
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- CN211429104U CN211429104U CN202020105924.9U CN202020105924U CN211429104U CN 211429104 U CN211429104 U CN 211429104U CN 202020105924 U CN202020105924 U CN 202020105924U CN 211429104 U CN211429104 U CN 211429104U
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- rotating shaft
- axial thrust
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- suspension motor
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Abstract
The utility model provides a stator and rotor structure of a magnetic suspension motor, which comprises a rotating shaft; a front radial magnetic bearing, a stator core, a rear radial magnetic bearing and an axial thrust magnetic bearing are sequentially arranged on the rotating shaft from front to back; the rotating shaft is provided with an axial thrust disc which is arranged in the axial thrust magnetic bearing; magnetic steel is arranged at the position of the rotating shaft opposite to the stator core; the end part of the stator core is provided with an end magnetic disc. The utility model relates to a magnetic suspension motor stator-rotor structure uses tip magnetic disc and additional magnet steel in the cooperation, can realize providing more axial magnetic pull, reduces the size of axial thrust dish, reduces spin resistance and friction loss, improves magnetic suspension motor's operating efficiency and stability.
Description
Technical Field
The utility model belongs to the magnetic suspension motor field especially relates to a magnetic suspension motor stator-rotor structure.
Background
Under the condition of the prior art, the high-speed magnetic suspension bearing motor is more and more widely applied in the field of blowers and compressors, and the principle is that a rotor is suspended in the air by utilizing magnetic force, so that a stator and a rotor are not in mechanical contact, and the mechanical resistance of the motor during high-speed operation is greatly reduced. The magnetic suspension bearing is divided into a front radial bearing, a rear radial bearing and an axial thrust bearing according to the degree of freedom. Because the load of the high-speed magnetic suspension motor is an impeller generally, and axial force can be generated during rotation, in order to improve the suspension stability of the magnetic suspension motor, the requirement of a client on axial thrust is higher and higher, and a corresponding axial thrust bearing is designed to be larger and larger, so that the circular linear speed of a thrust disc can be close to or even exceed the sonic speed, and simultaneously, the magnetic density of the thrust disc can be saturated during design, so that higher rotation resistance and friction loss are generated, and the operation efficiency and the stability of the magnetic suspension motor are seriously influenced.
Disclosure of Invention
In view of this, the utility model aims at providing a magnetic suspension motor stator-rotor structure, and the cooperation uses tip magnetic disc and additional magnet steel, can realize providing more axial magnetic pull, reduces the size of axial thrust dish, reduces rotating resistance and friction loss, improves magnetic suspension motor's operating efficiency and stability.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a magnetic suspension motor stator and rotor structure comprises a rotating shaft; a front radial magnetic bearing, a stator core, a rear radial magnetic bearing and an axial thrust magnetic bearing are sequentially arranged on the rotating shaft from front to back; the rotating shaft is provided with an axial thrust disc which is arranged in the axial thrust magnetic bearing; magnetic steel is arranged at the position of the rotating shaft opposite to the stator core; the end part of the stator core is provided with an end magnetic disc.
Furthermore, the additional magnetic steel is arranged at the end part of the magnetic steel, and the magnetizing direction of the additional magnetic steel faces to the magnetic field direction of the magnetic steel.
Compared with the prior art, the utility model relates to a magnetic suspension motor stator-rotor structure has following advantage:
the utility model relates to a magnetic suspension motor stator-rotor structure uses tip magnetic disc and additional magnet steel in the cooperation, can realize providing more axial magnetic pull, reduces the size of axial thrust dish, reduces spin resistance and friction loss, improves magnetic suspension motor's operating efficiency and stability.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation.
In the drawings:
fig. 1 is a schematic view of a stator and a rotor of a magnetic levitation motor according to an embodiment of the present invention.
Description of reference numerals:
1-a stator core; 2-magnetic steel; 3-a rotating shaft; 4-a front radial magnetic bearing; 5-end magnetic disc; 6-rear radial magnetic bearing; 7-axial thrust magnetic bearing; 8-axial thrust disk; 9-additional magnetic steel.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, a stator and rotor structure of a magnetic suspension motor comprises a rotating shaft 3; a front radial magnetic bearing 4, a stator core 1, a rear radial magnetic bearing 6 and an axial thrust magnetic bearing 7 are sequentially arranged on the rotating shaft 3 from front to back; an axial thrust disc 8 is arranged on the rotating shaft 3, and the axial thrust disc 8 is arranged in the axial thrust magnetic bearing 7; the relative position of the rotating shaft 3 and the stator core 1 is provided with magnetic steel 2; the end part of the stator core 1 is provided with an end magnetic disc 5.
As shown in fig. 1, the additional magnetic steel 9 is disposed at the end of the magnetic steel 2, and the magnetizing direction of the additional magnetic steel 9 faces the magnetic field direction of the magnetic steel 2, so as to enhance the magnetic field and improve the axial magnetic pull.
In the present embodiment, the end magnetic disk 5 is provided at the end of the stator core 1 to enhance the leakage magnetic field, thereby maximizing the generation of the axial magnetic pulling force by the end leakage.
In the present embodiment, the end magnetic disk 5 is made of a material such as a laminated silicon steel sheet or ferrite that is magnetically conductive and has low eddy current loss, so as to reduce the eddy current loss of the alternating magnetic field.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A magnetic suspension motor stator and rotor structure is characterized in that: comprises a rotating shaft (3); a front radial magnetic bearing (4), a stator core (1), a rear radial magnetic bearing (6) and an axial thrust magnetic bearing (7) are sequentially arranged on the rotating shaft (3) from front to back; an axial thrust disc (8) is arranged on the rotating shaft (3), and the axial thrust disc (8) is arranged in the axial thrust magnetic bearing (7); magnetic steel (2) is arranged at the position of the rotating shaft (3) opposite to the stator core (1); an end magnetic disc (5) is arranged at the end part of the stator core (1).
2. A magnetic suspension motor stator and rotor structure according to claim 1, characterized in that: the additional magnetic steel (9) is arranged at the end part of the magnetic steel (2), and the magnetizing direction of the additional magnetic steel (9) faces to the magnetic field direction of the magnetic steel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020105924.9U CN211429104U (en) | 2020-01-17 | 2020-01-17 | Stator and rotor structure of magnetic suspension motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020105924.9U CN211429104U (en) | 2020-01-17 | 2020-01-17 | Stator and rotor structure of magnetic suspension motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211429104U true CN211429104U (en) | 2020-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020105924.9U Active CN211429104U (en) | 2020-01-17 | 2020-01-17 | Stator and rotor structure of magnetic suspension motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211429104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027920A (en) * | 2021-03-02 | 2021-06-25 | 苏州保邦电气有限公司 | Magnetic suspension thrust bearing, rotor assembly and magnetic suspension motor |
-
2020
- 2020-01-17 CN CN202020105924.9U patent/CN211429104U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027920A (en) * | 2021-03-02 | 2021-06-25 | 苏州保邦电气有限公司 | Magnetic suspension thrust bearing, rotor assembly and magnetic suspension motor |
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Address after: 300457 Block D, No. 90, 12th Avenue, Binhai New Area Development Zone, Tianjin Patentee after: Tianjin Feixuan Technology Co.,Ltd. Address before: 300457 Block D, No. 90, 12th Avenue, Binhai New Area Development Zone, Tianjin Patentee before: TIANJIN EMAGING TECHNOLOGY Co.,Ltd. |
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