Linear Compressor Vibration Isolation via Intermediary Support
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Solution Overview
Problem
Linear compressors experience vibration transmission to the compressor casing due to plate springs, leading to noise generation and compromised assembly convenience due to the direct fixing method of plate springs to the compressor casing.
Innovation Solution
The implementation of a support device with a first and second plate spring, coupled to the shell covers, which includes a spring connection part and a buffer part to absorb vibrations and prevent relative rotation, ensuring the compressor body's axis passes through the center of the springs, thereby minimizing vibration transmission and enhancing assembly convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the plate spring is directly fixed to the compressor casing, then the structure is simple, but vibration is transmitted to the compressor casing generating noise
Solution Approach 1:
A vibration absorber is introduced as an intermediary component between the plate spring and the compressor casing. The vibration absorber includes a damping element that absorbs vibrations from the plate spring before they reach the compressor casing, thereby reducing vibration-induced noise while maintaining the simplicity of the overall structure
Solution Approach 2:
The damping element in the vibration absorber provides beforehand cushioning by absorbing vibrations from the plate spring before they can be transmitted to the compressor casing. This preventive measure reduces noise generation by cushioning the vibration transmission path in advance
2Ease of manufacture
If the plate spring is fixed only after covers are coupled, then assembly is straightforward, but work convenience deteriorates due to inability to fix position beforehand
Solution Approach 1:
The vibration absorber is pre-installed on the plate spring before the covers are coupled to the compressor casing. This preliminary action allows the position of the plate spring to be fixed in advance, improving work convenience during assembly while maintaining the straightforward assembly process
3Stability of the object's composition
If the plate spring has high transverse rigidity, then structural stability is improved, but vibration transmission to the compressor casing increases
Solution Approach 1:
The vibration absorber with damping element acts as an intermediary that decouples the relationship between the high-rigidity plate spring and the compressor casing. The damping element absorbs vibrations from the stable plate spring structure before they reach the compressor casing, allowing high transverse rigidity without increased vibration transmission
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 effectively reduces vibration-induced noise and improves assembly efficiency by minimizing vibration transmission to the shell, while maintaining the compressor body's stability and reducing the risk of collision with the shell.
Implementation Method 1
The plate spring may have high transverse rigidity (rigidity with respect to a direction that extends perpendicular to the axial direction of the compressor body) and low longitudinal rigidity (rigidity with respect to the axial direction of the compressor body)
Data Source
AI summary
The linear compressor is provided that may include a shell having first and second ends open, a first shell cover that covers a first end of the shell, a second shell that covers a second end of the shell, a compressor body accommodated in the shell to compress a refrigerant, a first support that supports a first end of the compressor body within the shell and coupled to the first shell cover in a state of being spaced apart from the shell, and a second support that supports a second end of the compressor body and fixed to the shell.