Linear Compressor Stator with Non-Uniform Air Gaps
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Solution Overview
Problem
Existing linear compressors face challenges in reducing mechanical losses and improving compression efficiency due to structural complexities and interference issues between components, particularly with increasing core block size in stator configurations, which affects manufacturing costs and efficiency.
Innovation Solution
The design incorporates a linear compressor with a reduced number of core blocks in the stator, featuring non-uniform air gaps and varying radii of curvature, allowing for a simpler and cost-effective structure while maintaining efficient magnetic flux interaction and minimizing interference between components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of core blocks in the stator is increased to improve magnetic flux interaction, then the efficiency of the linear compressor is improved, but the manufacturing cost and structural complexity increase
Solution Approach 1:
The patent applies local quality by creating non-uniform air gaps between core blocks, where specific regions have different gap sizes optimized for their functional requirements. This allows efficient magnetic flux interaction in critical areas while reducing complexity in less critical regions, resolving the contradiction between compression efficiency and structural complexity.
Solution Approach 2:
The patent introduces asymmetry by varying the radii of curvature of core block surfaces and creating unequal air gap distributions. This asymmetric design optimizes magnetic flux paths without requiring a uniform increase in the number of core blocks, thereby maintaining compression efficiency while reducing overall stator complexity.
2Ease of manufacture
If the air gap between core blocks and stator is made uniform, then the manufacturing process is simplified, but the magnetic flux interaction and compressor efficiency are reduced
Solution Approach 1:
The patent implements local quality by designing non-uniform air gaps where specific regions have optimized gap sizes for maximum magnetic flux interaction. This localized optimization ensures efficient magnetic coupling without requiring uniform air gaps throughout, thus maintaining ease of manufacture in critical areas while improving overall magnetic flux interaction.
3Stability of the object's composition
If the radius of curvature of core blocks is increased to reduce interference, then the structural stability is improved, but the magnetic flux density and efficiency are reduced
Solution Approach 1:
The patent applies asymmetry by using varying radii of curvature for different core blocks rather than a uniform radius. This asymmetric design allows certain core blocks to have larger radii for structural stability while others maintain smaller radii for higher magnetic flux density, thus resolving the contradiction between structural stability and magnetic flux density.
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 approach reduces manufacturing costs and time, prevents reduction in coil windings, and optimizes the movement of the permanent magnet, enhancing the overall efficiency and stability of the linear compressor.
Implementation Method 1
a coil wound around a bobbin; and a plurality of core blocks surrounding the bobbin. In at least one core block, a distance between a first surface that faces the second stator and a second surface that faces the first stator varies in a circumferential direction of the second stator
Implementation Method 2
a distance between a first surface that faces the second stator and a second surface that faces the first stator varies in a circumferential direction of the second stator
Data Source
AI summary
A linear compressor and a linear motor for a linear compressor are provided. The linear motor may include a first stator, a second stator spaced apart from the first stator, and at least one permanent magnet disposed between the first stator and the second stator. The first stator may include a bobbin around which a coil may be wound, and a plurality of core blocks that surrounds the bobbin. In at least one core block of the plurality of core blocks, a distance between a first surface that faces the second stator and a second surface of the second stator that faces the first surface varies in a circumferential direction of the second stator.