Electric machine for a compressor and / or a turbine
By setting a flow deflection surface on the rotor shaft and optimizing the medium flow path, the problem of insufficient rotor cooling was solved, and the effective power and operational stability of the motor were improved.
CN113258720BActive Publication Date: 2026-07-17ROBERT BOSCH GMBH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ROBERT BOSCH GMBH
- Filing Date
- 2021-02-10
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
The existing motors suffer from reduced effective power due to poor rotor cooling during long-term operation.
Method used
By setting a flow deflection surface on the rotor shaft, the medium flow is locally deflected outside the sleeve and enters the inside of the sleeve. Combined with the design of the cover and the sleeve, the medium flow path is optimized to cool the rotor.
Benefits of technology
It improves the effective power of the motor, especially maintaining motor performance during long-term operation at high speed and high torque, and reduces flow losses and noise.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN113258720B_ABST
Abstract
The invention relates to an electric machine for a compressor and / or a turbine, having a shaft which is rotatably supported in a housing, a stator which is fixed to the housing and arranged coaxially to the rotor, and a cover which covers the rotor upstream, a sleeve which is arranged coaxially to the rotor and which adjoins the cover, the sleeve completely surrounds the rotor on the circumference side and at least partially in the axial direction, wherein the sleeve is radially spaced apart from the rotor and wherein the rotor has a rotor shaft which is connected to the shaft in a torsion-proof manner and which leads in the axial direction from the sleeve to the compressor and / or turbine, at least one permanent magnet being arranged torsion-proof on the rotor shaft inside the sleeve. The rotor shaft has a flow deflection surface which is located outside the sleeve and serves for locally deflecting a medium which flows outside the sleeve in the direction of the compressor or turbine towards the inside of the sleeve.
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