Integrated protection magnetic suspension motor and magnetic suspension vacuum pump

Through the integrated protection design and self-circulating cooling system, the problems of weak sealing and insufficient heat dissipation of the magnetic levitation vacuum pump are solved, a high protection level and efficient heat dissipation effect are achieved, and its application capability in harsh environments is improved.

CN120750082AActive Publication Date: 2025-10-03SHANDONG ZHANGQIU HUADONG BLOWER
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Patent Information

Application Number
CN202511264487.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-05
Publication Date
2025-10-03
Estimated Expiration
2045-09-05

AI Technical Summary

Technical Problem

The bearing seat design of existing magnetic levitation vacuum pumps results in weak sealing, making it difficult to improve the protection level in humid, dusty or corrosive atmospheres. At the same time, heat dissipation conflicts with sealing, limiting its application in harsh environments.

Method used

An integrated protection design is adopted, with the front protective bearing seat, front radial magnetic bearing seat, rear protective bearing seat and rear radial magnetic bearing seat installed inside the casing. A single air inlet and single air outlet design is adopted, combined with the heat dissipation impeller and intercooler to form a self-circulating cooling system, reducing leakage points and improving heat dissipation efficiency.

Benefits of technology

It achieves a protection level of IP54 or above, improves the application capability of the magnetic levitation vacuum pump in harsh environments, and ensures efficient heat dissipation through a self-circulating cooling system, reducing the failure rate and extending the service life of the bearings.

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Abstract

The invention relates to an integrated protection magnetic suspension motor and a magnetic suspension vacuum pump, and belongs to the technical field of magnetic suspension motor protection. In the magnetic suspension motor, a front backboard is arranged at the front end of a casing, a tail end cover and a tail end cover are arranged at the rear end of the casing, the casing, the front backboard, the tail end cover and the tail end cover form an installation cavity, and a front protection bearing seat, a front radial magnetic bearing seat, a rear protection bearing seat and a rear radial magnetic bearing seat are installed in the installation cavity. And a seam and a connecting surface between the bearing seats are prevented from being exposed outside. Only one air inlet and one air outlet are formed in the machine shell, leakage points are reduced through the design of the single air inlet and the single air outlet, and protection above IP54 is achieved. Meanwhile, heat dissipation and protection of the motor are considered at the same time through the design.
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