Reciprocating Compressor Vibration Damping via Layered Shell
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Solution Overview
Problem
Existing reciprocating compressors with support springs fail to sufficiently attenuate vibration noise, as they only absorb vibrations transmitted from the exterior or generated within the shell, leading to residual noise issues.
Innovation Solution
The implementation of a vibration absorbing member formed into layers on the outer or inner surface of the shell, creating a frictional damping and noise insulating layer to attenuate vibrations through interlayer contact and potential air gaps, enhancing noise reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If support springs are used to absorb vibrations, then vibration noise is attenuated, but residual high-frequency noise remains insufficiently reduced
Solution Approach 1:
The shell is divided into multiple layers (first shell and second shell) with vibration absorbing members positioned between them. This segmentation creates multiple interfaces for vibration damping, allowing the system to address both low-frequency and high-frequency noise more effectively by distributing the vibration absorption function across multiple layers rather than relying on a single support spring system.
Solution Approach 2:
Vibration absorbing members are introduced as intermediary elements between the first shell and second shell. These members act as mediators that specifically target and dampen high-frequency vibrations through frictional contact and material damping properties, complementing the support springs and providing additional noise attenuation in the high-frequency band.
2Object-affected harmful factors
If multiple layers are added to increase vibration absorption, then noise reduction improves, but device complexity increases
Solution Approach 1:
The first shell and second shell are merged into a single integrated component structure, with the vibration absorbing members positioned between their walls. This merging approach allows the vibration damping function to be incorporated into the shell assembly itself, eliminating the need for separate external damping structures and reducing overall device complexity while maintaining effective noise reduction.
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 configuration effectively reduces vibration noise, particularly in the high-frequency band, by increasing the contact area and using materials with greater stiffness to prevent sagging, while maintaining a lightweight and cost-effective design.
Implementation Method 1
creating a frictional damping and noise insulating layer to attenuate vibrations through interlayer contact
Implementation Method 2
a support spring may be installed between a shell and a compression mechanism, and thus, vibration transmitted from the exterior of the shell or vibration generated in an interior of the shell may be absorbed by the support spring
Data Source
AI summary
A reciprocating compressor is provided that may include a shell including a vibration absorbing member formed to be wound around an outer circumferential surface or an inner circumferential surface or stacked thereon, so that compressor vibration may be attenuated by frictional contact between the shell and the vibration absorbing member or between layers of the vibration absorbing member. Also a noise insulating layer may be formed between the shell and the vibration absorbing member or between the layers of the vibration absorbing member, so that a magnitude of noise may be reduced as vibration noise passes through the noise insulating layer, whereby vibration noise of the compressor, such as noise of a high frequency band, may be further attenuated by fine vibration.