Compressor Motor Stator Insulation for Noise Reduction
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Solution Overview
Problem
Existing stator designs for compressors suffer from limitations in reducing electromagnetic noise, which can degrade drive efficiency when noise-reducing components are added, limiting the amount of coil that can be wound and affecting motor performance.
Innovation Solution
The implementation of an insulation part made of plastic-based or rubber-based materials, such as polyether ether ketone (PEEK) or polyurethane rubber, is positioned between coil winding parts to surround the coil and reduce electromagnetic noise by attenuating vibrations, preventing direct contact between the coil and stator, and optimizing the number of coil turns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If additional components for reducing electromagnetic noise are installed, then electromagnetic noise is reduced, but the amount of coil that can be wound around the stator is reduced, deteriorating drive efficiency
Solution Approach 1:
The insulator is integrated directly into the stator structure, merging the insulation function with the stator body. This eliminates the need for separate insulation components while maintaining electromagnetic noise reduction, allowing more coil space and preserving drive efficiency
Solution Approach 2:
The insulator acts as an intermediary element positioned between the coil and stator, providing electromagnetic noise reduction through its material properties and positioning. This mediator approach reduces noise without requiring additional complex components that would reduce coil winding space
2Object-affected harmful factors
If additional components for reducing electromagnetic noise are installed, then electromagnetic noise is reduced, but manufacturing cost increases
Solution Approach 1:
The insulator is integrated into the stator structure as a unified component, reducing the total part count and assembly steps. This merging approach simplifies manufacturing processes and reduces costs compared to using separate insulation components
Solution Approach 2:
The insulator serves multiple functions simultaneously: electrical insulation, electromagnetic noise reduction, and structural support. This multi-functionality eliminates the need for separate components, reducing manufacturing complexity and cost
3Object-affected harmful factors
If additional components for reducing electromagnetic noise are installed, then electromagnetic noise is reduced, but device complexity increases
Solution Approach 1:
The insulator is integrated into the stator structure, merging multiple functions into a single component. This reduces device complexity by eliminating separate insulation components and their associated assembly procedures
Solution Approach 2:
The insulator performs multiple functions (electrical insulation, electromagnetic noise reduction, structural support) within a single integrated component, simplifying the overall stator structure and reducing the number of parts that need to be manufactured and assembled
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 effectively reduces electromagnetic noise and maintains or improves drive efficiency by allowing more coil turns while preventing electrical limitations and manufacturing cost increases.
Implementation Method 1
an insulation part disposed between one or a first coil winding part and the other or a second coil winding part of a plurality of coil winding parts, and configured to surround a portion of the coil to reduce electromagnetic noise generated in the coil
Data Source
AI summary
A stator for a compressor motor may include a stator body having a hollow therein, a plurality of coil winding portions that protrudes inward from an inner circumferential surface of the stator body and spaced apart from each other, a coil wound around each of the plurality of coil winding portions, and an insulation portion that extends in an axial direction of the stator body, disposed between a first coil winding portion and a second coil winding portion of the plurality of coil winding portions, and coupled to the inner circumferential surface of the stator body to surround a portion of the coil. The insulation portion may be made of polyether ether ketone, which is a plastic-based material, or one of polyurethane rubber or silicone rubber, which are rubber-based materials.