Linear Compressor Magnetic Resonance Spring Design
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Solution Overview
Problem
Existing linear compressors rely on mechanical resonance springs, which are inefficient and costly, and lack the ability to easily adjust the characteristics of magnetic resonance springs to optimize performance.
Innovation Solution
A linear compressor design incorporating a stator with a magnetoresistive air gap and strategically positioned magnets to adjust magnetic resistance, stiffness, and stroke, allowing for the replacement of mechanical resonance springs with a magnetic resonance spring system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mechanical resonance spring is used in the linear compressor, then the reciprocating motion of the piston can be realized, but the device complexity increases and manufacturing cost increases
Solution Approach 1:
The patent replaces the mechanical resonance spring with a magnetic resonance spring that uses magnetic fields instead of mechanical components. The magnetic resonance spring includes a stator with coils and a mover with magnets, eliminating the need for traditional mechanical springs and reducing device complexity while maintaining the reciprocating motion function
Solution Approach 2:
The patent extracts and removes the mechanical resonance spring component from the linear compressor system, replacing it with a magnetic field-based resonance mechanism. This extraction eliminates the mechanical spring structure while preserving the essential reciprocating motion generation capability
2Ease of operation
If a mechanical resonance spring is used in the linear compressor, then the reciprocating motion can be maintained, but the weight of the compressor increases
Solution Approach 1:
The patent substitutes mechanical springs with a magnetic resonance system consisting of electromagnetic coils and magnets. This substitution significantly reduces the weight of moving components while maintaining the reciprocating motion function through magnetic field interactions rather than mechanical elasticity
3Device complexity
If the characteristics of the magnetic resonance spring are not optimized, then the structure is simpler, but the productivity and efficiency of the compressor decrease
Solution Approach 1:
The patent optimizes the magnetic resonance spring characteristics by adjusting parameters such as the number of coils, coil winding patterns, magnet strength, and air gap dimensions. These parameter changes enable precise control over the restoring force and resonance frequency, significantly improving compressor efficiency and productivity while maintaining structural simplicity
Solution Approach 2:
The patent implements a dynamically optimized magnetic resonance system where the restoring force characteristics can be adjusted by changing operational parameters such as current magnitude and frequency. This dynamic optimization allows the system to adapt to different operating conditions, maximizing productivity while keeping the physical structure simple
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 design enhances the compressor's efficiency by reducing weight and manufacturing costs, increasing stroke, and enabling precise control over magnetic resonance spring characteristics, particularly suitable for high-speed operations.
Implementation Method 1
a stator generating a thrust pushing the mover in the reciprocating direction and a restoring force pushing the mover in a direction toward the reference position according to an interaction with the movable magnet
Implementation Method 2
a magnetoresistive air gap formed in a position spaced apart from the mover air gap to change magnetic resistance of a magnetic circuit formed along the stator
Implementation Method 3
a magnetic resonance spring structure capable of completely replacing the mechanical resonance spring
Data Source
AI summary
A linear compressor includes a casing, a cylinder forming a compression chamber inside the casing, a piston reciprocating to compress a fluid of the compression chamber, a mover having a movable magnet and reciprocating on the basis of a predetermined reference position to drive the piston, and a stator generating a thrust pushing the mover in the reciprocating direction and a restoring force pushing the mover in a direction toward the reference position according to an interaction with the movable magnet, wherein the stator includes a mover air gap formed to accommodate the mover and a magnetoresistive air gap formed in a position spaced apart from the mover air gap to change magnetic resistance of a magnetic circuit formed along the stator. According to this, a magnetic resonance spring with increased restoring force may be implemented.