Zinc Frame Linear Compressor for Electromagnetic Leakage Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional linear compressors experience electromagnetic force leakage and low forming accuracy due to aluminum frames, leading to efficiency deterioration and increased machining and manufacturing costs.
Innovation Solution
A linear compressor with a frame made of diamagnetic zinc, integrated with the cylinder and featuring shock-absorbing members, prevents electromagnetic force leakage and improves forming accuracy, reducing the number of machining locations needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the frame is made of aluminum, then the frame can be die cast, but electromagnetic force leaks through the frame causing efficiency deterioration
Solution Approach 1:
The patent changes the magnetic property parameter of the frame material from paramagnetic (aluminum) to diamagnetic (zinc), which fundamentally alters how the material interacts with electromagnetic fields. This parameter change prevents electromagnetic force leakage while maintaining die casting manufacturability.
Solution Approach 2:
The patent uses zinc as a diamagnetic material that combines both the desired magnetic properties (blocking electromagnetic force) and manufacturing properties (die casting capability). This single material serves multiple functions that would otherwise require composite construction.
2Ease of manufacture
If the frame is made of aluminum, then the frame can be die cast, but the forming accuracy is low requiring multiple machining operations
Solution Approach 1:
The patent changes the material from aluminum to zinc, which has superior die casting forming accuracy. This material parameter change enables high-precision parts to be produced directly from die casting without requiring multiple machining operations, thereby improving manufacturing precision while maintaining ease of manufacture.
3Manufacturing precision
If multiple machining locations are required, then the frame can be precisely formed, but productivity decreases and manufacturing costs increase
Solution Approach 1:
The patent performs the precision forming action during the die casting process itself, rather than requiring subsequent machining operations. The frame is precisely formed in advance during manufacturing, eliminating the need for multiple machining steps and thereby improving productivity without sacrificing precision.
4Ease of manufacture
If the frame is made of aluminum, then the frame can be die cast, but electromagnetic force leakage occurs leading to increased manufacturing costs
Solution Approach 1:
The patent changes the magnetic property parameter of the frame material from paramagnetic to diamagnetic, which eliminates the harmful electromagnetic force leakage effect while preserving the beneficial die casting manufacturing capability. This single material substitution resolves both the manufacturing ease and harmful factor issues.
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
The use of a zinc frame in the linear compressor enhances efficiency by preventing electromagnetic force leakage and reduces manufacturing costs through improved forming accuracy and minimized machining requirements.
Implementation Method 1
the frame may be made of a diamagnetic material... the frame may be made of zinc selected from among diamagnetic materials... preventing an electromagnetic force of a linear motor from being leaked via a motor supporting frame
Data Source
AI summary
Disclosed herein is a linear compressor wherein a compression unit, including a cylinder and a linear motor, is supported by a frame mounted in a hermetic container. The frame is die cast using diamagnetic zinc having a high forming accuracy, thereby preventing an electromagnetic force of the linear motor from being leaked therethrough, and enabling a reduction in the number of machining times thereof after die casting.