A motor with independent inner circulating air duct

By designing an independent internal circulation duct inside the motor and using passive fan blades and an active fan to form airflow circulation, the problem of uneven heat dissipation in the motor is solved, achieving rapid and uniform heat dissipation and improved sealing, thus extending the service life of the motor.

CN224537929UActive Publication Date: 2026-07-21SHANGHAI XILI ELECTRONICS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI XILI ELECTRONICS TECH CO LTD
Filing Date
2026-06-17
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing motor structures, under strict sealing requirements, struggle to dissipate heat evenly and quickly, leading to heat accumulation and reduced motor performance.

Method used

Design a motor with an independent internal circulation air duct. By setting passive fan blades and active fans on both sides of the stator base plate, an airflow circulation is formed. Combined with heat pipes and heat dissipation fins, uniform and rapid heat dissipation is achieved. And an air pressure regulation mechanism is used to prevent sealing failure caused by air pressure changes.

Benefits of technology

It achieves uniform and rapid heat dissipation inside the motor, improving the motor's performance and service life, while reducing the cost of connection lines and preventing the entry of external debris, thus enhancing the sealing performance.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224537929U_ABST
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Abstract

An electric motor with an independent internal circulation air duct includes a stator, a rotor, a stator base plate, a first cover plate, a second cover plate, and a rotating shaft. The rotating shaft is rotatably inserted inside the stator. The stator is fixed to the stator base plate. The rotor is fixedly connected to the rotating shaft and corresponds to the position of the stator. The first cover plate and the second cover plate are respectively connected to the stator base plate from both sides to form a first accommodating space and a second accommodating space on both sides of the stator base plate. A hollow portion connecting the first accommodating space and the second accommodating space is formed on the stator base plate. Multiple passive fan blades are formed on the side of the rotor facing the stator. An active fan mechanism is provided on the side of the stator base plate away from the rotor. The active fan mechanism is configured to send airflow from the second accommodating space into the first accommodating space during startup. This motor can dissipate heat evenly and quickly.
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