Cooling fin structure and motor

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By installing radial heat sinks on the outer periphery of the motor and fixing them with a cover and adhesive tape or frame components, the problem of sealing the ends of hollow fins is solved, achieving convenient assembly and reliable sealing, and improving cooling efficiency.

CN115441635BActive Publication Date: 2026-04-14NIDEC CORP(JP)

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Patent Information

Application Number: CN202210625068.3
Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner
Priority Date: 2021-06-02
Filing Date: 2022-06-02
Publication Date: 2026-04-14
Estimated Expiration: 2042-06-02

Application Information

Patent Timeline

02 Jun 2021

Priority

02 Jun 2022

Application

CN202210625068.3

14 Apr 2026

Publication

CN115441635B

IPC: H02K5/18; H02K5/04; H02K9/19

CPC: H02K5/18; H02K5/04; H02K9/19

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AI Tagging

Application Domain

Cooling/ventillation arrangement Supports/enclosures/casings

Technology Topics

Refrigerant Mechanical engineering

Technical Efficacy Phrases

Improve sealingImprove assembly workability

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AI Technical Summary

Technical Problem

In the existing technology, the end seal of hollow fins requires precision machining, which is troublesome and time-consuming to assemble, and it is difficult to reliably seal the cooling medium.

Method used

Multiple heat sinks are arranged radially and connected to form a cylindrical shape. The ends of the heat sinks are covered by a cover and fixed with adhesive tape or frame components to ensure airtightness.

Benefits of technology

It achieves convenient and reliable sealing, avoids leakage at the ends of hollow fins, and improves cooling efficiency.

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Patent Text Reader

Abstract

The present application provides a cooling fin structure and a motor. The cooling fin structure is installed in a manner surrounding the outer periphery of the motor and releases heat from the motor, and is characterized by having: a plurality of heat radiating fins projecting radially with respect to the axis of the motor and extending in parallel with respect to the axis of the motor, and having a hollow portion in which a refrigerant is enclosed in the interior; a plurality of connecting portions provided between the heat radiating fins at base end portions of the heat radiating fins and connecting the heat radiating fins in a cylindrical shape; a plurality of cover portions provided in a manner covering end portions of the heat radiating fins on both sides in the axial direction of the motor and sealing the hollow portion; and an adhesive tape provided between each end portion and each cover portion and fixing each cover portion to each end portion.

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