Linear Compressor Spring Design Using Tensile and Compressive Forces
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Solution Overview
Problem
Existing linear compressors require multiple springs to support the reciprocating actuator, leading to increased stress on individual springs, larger compressor size, and limited installation space due to the use of only compressive forces.
Innovation Solution
A linear compressor design that utilizes both tensile and compressive forces of a single spring by fixing both ends, allowing the spring to support the driving assembly with both types of forces, thereby reducing the number of springs needed and simplifying the internal structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple 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 configuring it with both tensile and compressive sections. This single spring replaces what would traditionally require multiple separate springs, thereby reducing the overall compressor size and installation space while maintaining the actuator support function.
Solution Approach 2:
The single spring is designed to perform multiple functions: it provides both tensile force and compressive force support, acts as a mechanical element for actuator support, and serves as an integral part of the resonant system. This multi-functionality eliminates the need for multiple dedicated components.
2Device complexity
If only compressive force of springs is used, then the spring structure is simple, but large stress is generated in the springs and multiple springs are required
Solution Approach 1:
The spring is designed with dynamic characteristics that allow it to alternate between tensile and compressive states during operation. By incorporating both tensile and compressive sections, the spring dynamically adapts its force direction based on operational requirements, distributing stress more effectively and reducing peak stress values.
Solution Approach 2:
The patent changes the physical parameters of the spring by introducing both tensile and compressive sections with different geometric configurations. This parameter change allows the spring to utilize both tensile and compressive elastic properties, effectively doubling its functional capacity while reducing the number of springs needed.
3Ease of manufacture
If only compressive sections of springs are used, then the spring configuration is simplified, but a plurality of springs must be installed increasing installation space
Solution Approach 1:
The patent combines multiple spring functions into a single integrated spring component. By merging the tensile and compressive spring sections into one unified structure, the design reduces the quantity of springs from multiple units to just one, thereby simplifying installation while maintaining structural integrity.
4Reliability
If a plurality of springs is installed, then the actuator can be adequately supported, but the shell size and compressor size are increased
Solution Approach 1:
The spring is positioned and configured within the existing compressor shell space, utilizing the available internal volume efficiently. The single spring with its dual tensile-compressive structure nests within the compact shell, providing adequate actuator support without increasing the overall shell dimensions.
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 enables the support of larger loads, reduces the compressor's size, and allows for more flexible installation by using a single spring that can be shaped to effectively support the driving assembly, minimizing lateral forces and increasing the spring's rigidity.
Implementation Method 1
a spring coupled to the driving assembly and the supporting assembly to axially elastically support the driving assembly
Data Source
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.