Linear compressor
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Solution Overview
Problem
Existing linear compressors require multiple springs to support the reciprocating actuator, leading to small force application, increased spring stress, and larger compressor size due to the need for multiple compressive springs, occupying significant installation space.
Innovation Solution
A linear compressor design that utilizes both tensile and compressive forces of a single spring by fixing both ends to the stator cover and suction muffler, supporting the driving assembly with one spring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple compressive springs are used to support the reciprocating actuator, then the actuator can be supported, but the compressor size increases and installation space is limited
Solution Approach 1:
The patent merges the functions of multiple springs into a single spring by introducing a bifurcated structure. The spring is divided into two branches that simultaneously support both ends of the actuator, eliminating the need for multiple separate springs and reducing the overall compressor size while maintaining reliable actuator support.
Solution Approach 2:
The spring is segmented into two distinct branches (first spring branch and second spring branch) that are fixed to different ends of the actuator. This segmentation allows a single spring to perform the support function that previously required multiple springs, thereby reducing compressor volume while ensuring reliable actuator support.
2Device complexity
If only compressive sections of springs are used, then the spring structure is simple, but large stress is generated in the springs
Solution Approach 1:
The patent inverts the conventional approach by using both compressive and tensile sections of the spring. Instead of only utilizing the compressive section as in traditional designs, the bifurcated spring structure enables the first branch to experience compression while the second branch experiences tension, thereby distributing stress and reducing peak stress values.
3Reliability
If multiple springs are installed to support the actuator, then the actuator can be supported, but the compressor shell size increases
Solution Approach 1:
The patent combines multiple spring functions into a single bifurcated spring that spans across the actuator. The first spring branch and second spring branch work together to support both ends of the actuator simultaneously, eliminating the need for multiple separate springs and reducing the required shell size.
Solution Approach 2:
The spring is configured to extend in different spatial directions with its two branches positioned at different locations. This three-dimensional arrangement allows a single spring to provide support across the actuator length, reducing the shell size requirement compared to linear arrangements of multiple springs.
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 design supports larger loads with reduced spring stress, allows for a compact compressor shell, and frees up installation space, enabling more flexible placement.
Implementation Method 1
a spring which is fixed at both ends thereof and elastically supports the driving assembly, and uses both of tensile force and compressive force
Data Source
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AI summary
The present invention relates to a linear compressor. The linear compressor according to an aspect of the present invention includes a spring axially elastically supporting a driving assembly. The spring includes a spring body axially extending, a front spring link forming an end of the spring body by extending from a side of the spring body, and a rear spring link forming the other end of the spring body by extending from the other side of the spring body. Any one of the front spring link and the rear spring link is fixed to the driving assembly and the other one is fixed to a supporting assembly.