转子结构、磁悬浮电机及压缩机
By introducing electromagnetic isolation components and thermal conductive materials into the rotor structure, the problem of eddy current loss in high-speed permanent magnet motors is solved, achieving efficient operation and improved reliability of the rotor structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING MIDEA GENERAL REFRIGERATING EQUIP CO LTD
- Filing Date
- 2025-07-24
- Publication Date
- 2026-07-17
AI Technical Summary
In high-speed permanent magnet motors, eddy current losses caused by high-frequency harmonic magnetic fields in the rotor structure lead to increased rotor temperature and demagnetization of the magnets, affecting the motor's output performance and reliability.
Electromagnetic isolators are introduced into the rotor structure, using copper, aluminum, or silicon steel to form a multi-layered composite structure, which blocks high-frequency harmonic magnetic flux, constructs a reverse eddy current shielding path, reduces eddy current loss, and improves thermal stability through thermally conductive materials and protective sleeves.
It effectively suppresses eddy current losses inside the rotor, reduces the risk of magnet demagnetization, improves the thermal stability and energy efficiency of the motor, and enhances the operational reliability and efficiency of the rotor structure.
Smart Images
Figure CN224520786U_ABST
Abstract
Claims
1. A rotor structure, characterized in that, include: Rotor body; An isolation element is sleeved on the outside of the rotor body along the radial direction of the rotor body, and the isolation element is made of electromagnetic isolation material; The magnet portion is sleeved on the outside of the separator along the radial direction.
2. The rotor structure of claim 1, wherein The isolation element is a cylindrical element, and along the radial direction, the cylindrical element includes at least one isolation layer, and each isolation layer includes at least one of copper, aluminum or silicon steel.
3. The rotor structure of claim 2, wherein The isolation layer is multi-layered, and the materials in adjacent isolation layers are different.
4. The rotor structure of claim 1, wherein The isolation component is interference-fitted with the rotor body.
5. The rotor structure of claim 1, wherein The thickness of the isolation layer along the radial direction of the rotor body is L, wherein 0.5mm≤L≤1.2mm.
6. The rotor structure of claim 1, wherein The magnet section includes a plurality of magnet components, which are spaced apart along at least one of the radial direction, the circumferential direction of the rotor body, and the axial direction of the rotor body.
7. The rotor structure of claim 6, wherein Multiple magnetic steel components are arranged at intervals along the circumference, and the number of magnetic steel components is between 20 and 30.
8. The rotor structure of claim 1, wherein The rotor structure also includes a protective sleeve, which is fitted over the outside of the magnet part along the radial direction, and the protective sleeve is a carbon fiber protective sleeve or a glass fiber protective sleeve.
9. A magnetic levitation motor, characterized by, Includes the rotor structure according to any one of claims 1 to 8.
10. A compressor characterized by, Including the magnetic levitation motor according to claim 9.