Segmented Heat Sink Structure for Motor-Inverter Airflow Cooling
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Solution Overview
Problem
Existing heatsink solutions for rotating electrical machines and frequency inverters suffer from restricted airflow, reduced thermal efficiency, and limited compatibility with different motor sizes, making them inefficient for high power density applications.
Innovation Solution
A heatsink with non-continuous protrusions on a plate, optimized for thermal dissipation, is designed to enhance airflow and thermal exchange efficiency. The protrusions are strategically placed to maximize heat dissipation and are adaptable to various motor sizes, ensuring interchangeability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If continuous fins are used in the heatsink, then thermal dissipation surface area is increased, but air flow is restricted and thermal efficiency is reduced
Solution Approach 1:
The heatsink fins are segmented into intermittent rather than continuous structures. This segmentation creates gaps between fin sections that allow air to pass through more freely while still maintaining sufficient thermal dissipation surface area, thus resolving the contradiction between thermal efficiency and air flow rate.
2Volume of moving object
If heatsink is fixed to motor casing, then assembly compactness is improved, but adaptability to different motor sizes is reduced
Solution Approach 1:
The heatsink is designed with a universal mounting structure that can be adapted to different motor casing sizes. The fixation system uses adjustable or scalable mounting features that maintain compact assembly while being compatible across various motor dimensions,实现ing multi-size adaptability.
3Temperature
If complex connecting system is used for heatsink fixation, then thermal contact is improved, but installation complexity and device complexity increase
Solution Approach 1:
The heatsink fixation system merges the thermal contact function with the mechanical mounting function into a single integrated structure. This eliminates the need for separate complex connecting components while maintaining effective thermal contact, thus reducing overall device complexity.
4Ease of manufacture
If fins are disposed parallel to each other, then manufacturing is simplified, but air flow circulation is limited and turbulence utilization is reduced
Solution Approach 1:
The fins are arranged in an asymmetric intermittent pattern rather than uniform parallel disposition. This asymmetric arrangement optimizes air flow paths and utilizes turbulence more effectively while remaining manufacturable through standard fabrication processes, balancing manufacturing ease with air circulation efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly improves thermal exchange efficiency, allows for increased power density, and facilitates the integration of frequency inverters with motors of different sizes, while maintaining optimal airflow and reducing assembly complexity.
Implementation Method 1
the dissipation of losses from the electronic components to be sufficiently conducted through a minimal air flow in the heat exchanger
Implementation Method 2
the air flow generated by the electric machine refrigeration system
Data Source
AI summary
The present invention refers to a heatsink (100) mounted between an electric motor (200) and a frequency inverter (300), comprising a plate (110) equipped with protrusions (120) that are cams of the plate (110) which project towards the deflector cover (210) of the motor (200).