Stator Slot Insulation Centering Rotor and Flanges
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Solution Overview
Problem
Existing electric machines face challenges in manufacturing cost and heat dissipation, particularly in small motors where installation space is limited and conventional cooling methods are inefficient.
Innovation Solution
The electric machine design features a stator with slot insulation that centers the rotor and flange arrangement, eliminating the need for a separate housing and allowing direct heat dissipation from the stator surface, while also optimizing the motor's outer surface for enhanced cooling through angularly offset laminations forming protrusions that increase the surface area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional mounting flanges are attached to the motor housing, then the motor can be assembled and mounted, but the motor size increases and installation space requirements are not met
Solution Approach 1:
The patent merges the mounting flange with the stator body by integrating the flange arrangement directly into the stator's end face structure. This eliminates the need for a separate housing and reduces the overall motor volume while maintaining assembly capability through direct mounting of the flange to the stator using standard fastening methods.
2Temperature
If conventional cooling methods are used with separate housing, then heat can be dissipated, but the device complexity and space requirements increase
Solution Approach 1:
The patent extracts the housing function from the traditional separate housing structure and integrates it directly into the stator body. The stator's outer surface and end faces serve dual purposes as both magnetic circuit components and heat dissipation surfaces, eliminating the need for complex cooling channels and separate housing structures while improving thermal management efficiency.
3Temperature
If the stator is enclosed in a separate housing, then the motor structure is complete, but heat dissipation from the stator surface is reduced
Solution Approach 1:
The patent makes the stator body multi-functional by having it simultaneously serve as the magnetic circuit core, the structural support, and the heat dissipation surface. The stator's outer surface is directly exposed to the environment for efficient heat dissipation, while the integrated flange arrangement provides mounting capability, eliminating the need for a separate housing that would insulate and reduce heat dissipation efficiency.
Data Source
AI summary
An electric machine having a rotor and a stator that encloses the rotor. The stator is closed at its end faces by flanges. A slot insulation is applied in an axial direction to the stator and has means of centering the rotor and/or the flanges with respect to the stator.