An internal and external dual-path air cooling structure for a motor stator

By adopting an internal and external dual-channel air-cooling structure in the magnetic levitation air-cooled motor, the problems of difficult stator assembly and poor heat dissipation effect are solved, and more efficient cooling and more stable equipment operation are achieved.

CN113991923BActive Publication Date: 2025-03-25NANJING CIGU TECH CORP LTD
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Patent Information

Application Number
CN202111133792.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-09-27
Publication Date
2025-03-25
Estimated Expiration
2041-09-27

AI Technical Summary

Technical Problem

The stator assembly of existing magnetic levitation air-cooled motors is difficult to assemble, and the heat dissipation effect is poor, which affects the operating performance of the equipment and may damage the equipment.

Method used

The inner and outer dual air-cooled structure is adopted, and the stator and the casing are fixed through the first fixing ring and the second fixing ring, forming an annular cavity for cooling the outer ring of the stator, and cooling the inner ring of the stator through the gap between the rotor and the stator to form a double air-cooled structure.

Benefits of technology

It reduces the difficulty and complexity of stator assembly, improves the heat dissipation effect and cooling efficiency of stator, and avoids the heat accumulation problem during equipment operation.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention discloses an internal and external dual-path air-cooling structure of a motor stator. The motor comprises a casing, a rotor and a stator. The rotor is concentrically arranged on an inner ring of the stator to form a gap with the stator for cold air to pass through. The air-cooling structure comprises a first fixing ring and a second fixing ring which are concentrically sleeved on an outer ring of the stator and concentrically fixed between the stator and the casing. The first fixing ring and the second fixing ring are respectively arranged at two ends of the stator. The first fixing ring and the second fixing ring are both connected with an outer wall of the stator by interference fit. The first fixing ring, the second fixing ring, the outer wall of the stator and the inner wall of the casing are jointly surrounded by a closed annular cavity. An opening for gas interaction with the outside is provided in the annular cavity to form an air-cooling circuit inside the motor. The structure of the internal and external dual-path cooling motor of the invention successively cools the outer wall, the coil and the inner wall of the stator on the path. During assembly, the length of the fitting surface is reduced, which can effectively reduce the difficulty of assembly and reduce the probability of jamming during assembly.
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