Magnetic suspension bearing high-speed permanent magnet motor

Abstract

The utility model discloses a high-speed permanent magnet motor of a magnetic suspension bearing. The high-speed permanent magnet motor comprises a shell, a stator iron core, a rotor iron core and a rotating shaft, the stator iron core comprises a fixed disc and iron core modules, the fixed disc is connected with the inner side wall of the shell, a plurality of magnetism isolating plates which are evenly distributed in an angle mode are arranged on the inner side wall of the fixed disc, the iron core modules are fixedly connected between every two adjacent magnetism isolating plates, and the iron core modules are in a circular arc shape. The outer ring of the iron core module is attached to the inner side wall of the fixed disc, the inner ring of the iron core module is fixedly connected with a plurality of stator salient poles, and the stator salient poles are wound with stator coils; the rotor iron core is sleeved on the rotating shaft, and the outer side of the rotor iron core is provided with a rotor permanent magnet. According to the utility model, the inner side wall of the fixed disc is provided with the magnet vane, so that the magnetic field between the iron core modules can be effectively blocked, the uniform distribution of the magnetic field is realized, the utilization efficiency of the magnetic field is improved, the energy conversion capability of the motor is enhanced, and the performance of the motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a high-speed permanent magnet motor with a magnetic suspension bearing. Background Art

[0002] A magnetic levitation motor uses magnetic field forces to levitate the rotor. The basic principle is to establish appropriate magnetic fields on the rotor and stator. The generated magnetic force balances the rotor's gravity and other forces, allowing the rotor to float within the stator, eliminating the need for traditional mechanical bearings. A magnetic levitation motor primarily consists of a stator and a rotor. The stator generates a rotating magnetic field that drives the rotor and provides levitation. This motor offers advantages such as non-contact, frictionless operation, and low losses, making it widely used in applications requiring high speeds and high precision. However, conventional magnetic levitation motors lack effective magnetic isolation, resulting in uneven magnetic field distribution within and around the stator, impacting the motor's torque output and energy conversion efficiency.

[0003] Based on the above situation, the utility model proposes a high-speed permanent magnet motor with a magnetic suspension bearing, which can effectively solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a high-speed permanent magnet motor with a magnetic levitation bearing. The utility model provides a high-speed permanent magnet motor with a magnetic levitation bearing. By providing a magnetic isolation plate on the inner sidewall of the fixed plate, the motor can effectively block the magnetic field between the core modules, achieving a uniform distribution of the magnetic field, thereby improving the efficiency of magnetic field utilization, enhancing the energy conversion capability of the motor, and thus improving motor performance.

[0005] The utility model is achieved through the following technical solutions:

[0006] A high-speed permanent magnet motor with a magnetic levitation bearing comprises a housing, a stator core, a rotor core and a rotating shaft; the stator core comprises a fixed plate and a core module, the fixed plate is connected to the inner side wall of the housing, the inner side wall of the fixed plate is provided with a plurality of magnetic isolation plates with uniform angles, and a core module is fixedly connected between two adjacent magnetic isolation plates, the core module is arc-shaped, the outer ring of the core module is in contact with the inner side wall of the fixed plate, the inner ring of the core module is fixedly connected with a plurality of stator salient poles, and the stator salient poles are wound with stator coils; the rotor core is sleeved on the rotating shaft, and rotor permanent magnets are installed on the outer side of the rotor core.

[0007] According to the above technical solution, as a further preferred technical solution of the above technical solution, protrusions are respectively provided at both ends of the core module, the magnetic isolation plate is provided with grooves that cooperate with the protrusions, and the protrusions and the grooves are fixedly connected by a first bolt.

[0008] According to the above technical solution, as a further preferred technical solution of the above technical solution, the inner side wall of the shell is fixedly connected with a plurality of T-shaped blocks evenly distributed at equal angles, and the outer side wall of the fixed plate is fixedly connected with T-shaped slots that cooperate with the T-shaped blocks.

[0009] According to the above technical solution, as a further preferred technical solution of the above technical solution, the shell is provided with a plurality of bolt mounting holes uniformly distributed at equal angles, second bolts are installed in the bolt mounting holes, and the shell is fixedly connected to the fixed plate through the second bolts.

[0010] According to the above technical solution, as a further preferred technical solution of the above technical solution, there is a radial air gap between the stator core and the rotor core.

[0011] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0012] The utility model provides a high-speed permanent magnet motor with a magnetic levitation bearing. A magnetic isolation plate is provided on the inner wall of the fixed plate, which can effectively block the magnetic field between the core modules, realize the uniform distribution of the magnetic field, thereby improving the efficiency of magnetic field utilization, enhancing the energy conversion capability of the motor, and thus improving the performance of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0014] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred embodiments of the present invention are described below in conjunction with specific embodiments. However, it should be understood that the drawings are for illustrative purposes only and are not to be construed as limiting this patent. To better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the dimensions of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and are not to be construed as limiting this patent.

[0015] A high-speed permanent magnet motor with a magnetic levitation bearing comprises a shell 1, a stator core 2, a rotor core 3 and a rotating shaft 4; the stator core 2 comprises a fixed disk 21 and a core module 22, the fixed disk 21 is connected to the inner wall of the shell 1, the inner wall of the fixed disk 21 is provided with a plurality of magnetic isolation plates 211 with uniform angles, and a core module 22 is fixedly connected between two adjacent magnetic isolation plates 211, the core module 22 is arc-shaped, the outer ring of the core module 22 is in contact with the inner wall of the fixed disk 21, the inner ring of the core module 22 is fixedly connected with a plurality of stator salient poles 221, and the stator salient poles 221 are wound with stator coils 23; the rotor core 3 is sleeved on the rotating shaft 4, and a rotor permanent magnet 31 is installed on the outer side of the rotor core 3.

[0016] The utility model provides a magnetic isolation plate 211 on the inner wall of the fixed disk 21, which can effectively block the magnetic field between the core modules 22, achieve uniform distribution of the magnetic field, thereby improving the utilization efficiency of the magnetic field, enhancing the energy conversion capability of the motor, and thus improving the performance of the motor.

[0017] Furthermore, in another embodiment, protrusions 222 are respectively provided at both ends of the core module 22, and the magnetic isolation plate 211 is provided with a groove 212 that cooperates with the protrusion 222, and the protrusion 222 and the groove 212 are fixedly connected by a first bolt 24.

[0018] The protrusions 222 at both ends of the core module 22 are matched with the grooves 212 on the magnetic isolation plate 211 and fixed by the first bolts 23, so that the connection between the core module 22 and the magnetic isolation plate 21 is more secure.

[0019] Furthermore, in another embodiment, the inner wall of the shell 1 is fixedly connected to a plurality of T-shaped blocks 11 evenly distributed at equal angles, and the outer wall of the fixed plate 21 is fixedly connected to a T-shaped slot 213 that cooperates with the T-shaped blocks 11.

[0020] By providing the T-shaped block 11 and the T-shaped slot 213 , it is ensured that the stator 21 is accurately and fixedly installed in the housing 1 , thereby ensuring the position accuracy of the stator core 2 relative to the housing 1 .

[0021] Furthermore, in another embodiment, the housing 1 is provided with a plurality of bolt mounting holes 12 evenly distributed at equal angles, and second bolts 5 are installed in the bolt mounting holes 12 . The housing 1 is fixedly connected to the fixed plate 21 via the second bolts 5 .

[0022] By providing the second bolt 5, the connection strength between the housing 1 and the fixed plate 21 is further strengthened. Together with the coordinated connection between the T-shaped block 11 and the T-shaped slot 213, the fixed plate 21 is made more stable in the housing 1, thereby ensuring the stability of the stator core 2 during the operation of the motor and improving the stability of the overall structure of the motor.

[0023] Furthermore, in another embodiment, a radial air gap 6 is provided between the stator core 2 and the rotor core 3 .

[0024] By setting the radial air gap 6, direct contact between the stator iron core 2 and the rotor iron core 3 is avoided, friction and wear are reduced, energy loss is reduced, and at the same time, the rotor is guaranteed to rotate freely in the magnetic field generated by the stator, making the operation of the motor smoother and more stable, and improving the efficiency and service life of the motor.

[0025] According to the description and drawings of the present invention, those skilled in the art can easily manufacture or use the magnetic levitation bearing high-speed permanent magnet motor of the present invention, and can produce the positive effects described in the present invention.

[0026] Unless otherwise specified, in this utility model, if there are terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicating orientation or positional relationships, they are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationships in this utility model are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, they can understand the specific meanings of the above terms in conjunction with the accompanying drawings and according to specific circumstances.

[0027] Unless otherwise specified or limited, the terms "disposed," "connected," and "connected" in this utility model should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention falls within the scope of protection of the present invention.

Claims

1. A high-speed permanent magnet motor with a magnetic bearing, characterized in that: The invention comprises a housing (1), a stator core (2), a rotor core (3) and a rotating shaft (4); the stator core (2) comprises a fixed plate (21) and a core module (22); the fixed plate (21) is connected to the inner side wall of the housing (1); the inner side wall of the fixed plate (21) is provided with a plurality of magnetic isolation plates (211) uniformly distributed at an angle; and a core module (22) is fixedly connected between two adjacent magnetic isolation plates (211); the core module (22) is arc-shaped; the outer ring of the core module (22) is in contact with the inner side wall of the fixed plate (21); the inner ring of the core module (22) is fixedly connected with a plurality of stator salient poles (221); and the stator salient poles (221) are wound with stator coils (23); the rotor core (3) is sleeved on the rotating shaft (4), and a rotor permanent magnet (31) is installed on the outer side of the rotor core (3).

2. The high-speed permanent magnet motor with magnetic bearing according to claim 1, characterized in that: Both ends of the core module (22) are respectively provided with protrusions (222); the magnetic isolation plate (211) is provided with a groove (212) that cooperates with the protrusion (222); the protrusion (222) and the groove (212) are fixedly connected by a first bolt (24).

3. The high-speed permanent magnet motor with magnetic bearing according to claim 1, characterized in that: The inner side wall of the housing (1) is fixedly connected to a plurality of T-shaped blocks (11) uniformly distributed at equal angles, and the outer side wall of the fixed plate (21) is fixedly connected to a T-shaped slot (213) that cooperates with the T-shaped blocks (11).

4. The high-speed permanent magnet motor with magnetic bearing according to claim 1, characterized in that: The housing (1) is provided with a plurality of bolt mounting holes (12) uniformly distributed at equal angles, second bolts (5) are installed in the bolt mounting holes (12), and the housing (1) is fixedly connected to the fixed plate (21) via the second bolts (5).

5. The high-speed permanent magnet motor with magnetic bearing according to claim 1, characterized in that: A radial air gap (6) is provided between the stator core (2) and the rotor core (3).

Images