Inverter Integrated Motor Cylindrical Frame Heat Sink Assembly
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Solution Overview
Problem
Conventional power amplifier structures and cooling systems for inverter integrated motor apparatuses face challenges in assembly difficulty due to narrow workspaces and declining cooling performance when heat is transmitted from the motor to the inverter.
Innovation Solution
The inverter integrated motor apparatus features a cylindrical base frame with a motor unit and inverter unit accommodating sections, where the inverter unit has openings with rib sections and heat sinks installed on the base frame to cover these openings, allowing for improved assembly and cooling performance by positioning power modules and control substrates inside the heat sinks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the inverter unit is installed on the inner circumferential surface of a cylindrical frame with screw fastening from the inner side, then the cooling performance can be improved, but the assembly work becomes difficult due to narrow workspace
Solution Approach 1:
Instead of installing the inverter unit from the inner side of the cylindrical frame as in conventional designs, this patent inverts the installation direction by mounting the inverter unit on the outer circumferential surface of the cylindrical frame. This allows screw fastening operations to be performed from the outer side where adequate workspace is available, eliminating assembly difficulty while maintaining effective cooling performance through the thermally conductive frame structure.
2Device complexity
If the motor unit and inverter unit are accommodated within the same base frame, then the integration is improved, but heat from the motor transmits to the inverter causing declining cooling performance
Solution Approach 1:
The cylindrical frame is divided into functionally distinct zones: an inner circumferential surface area for accommodating the motor unit and an outer circumferential surface area for accommodating the inverter unit. This spatial segmentation allows both units to be integrated within the same base frame structure while preventing heat transmission from the motor to the inverter by positioning them on opposite sides of the thermally conductive frame, with the frame structure itself acting as a thermal management solution.
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
This configuration enhances both the assembly characteristics and cooling performance of the inverter unit by facilitating easier installation and effective heat dissipation, reducing thermal resistance and improving overall system efficiency.
Implementation Method 1
a plurality of heat sinks 11 which cool the power modules 30
Implementation Method 2
a plurality of heat sinks 11 which cool the power modules 30
Data Source
AI summary
In an inverter integrated motor apparatus, a cylindrical base frame has an inverter unit accommodating section. The inverter unit has a plurality of control substrates and a plurality of power modules which are provided on the control substrates. In the inverter unit accommodating section, a plurality of openings are provided at intervals in the circumferential direction. A rib section is formed between mutually adjacent openings. The openings are covered by the plurality of heat sinks. The power modules and control substrates are disposed on the inside of the heat sinks.