Linear Compressor Valve Spring Damping for Vibration Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Linear compressors experience vibration and noise issues due to the transfer of operational vibrations from the compressor body to the compressor casing, which are not effectively mitigated by existing support devices.
Innovation Solution
A linear compressor design incorporating a valve spring with a central portion, first and second spring arms, and a rubber damper, supported by a ring-shaped spring support portion, which absorbs and blocks the transmission of vibration and noise by physically separating the valve spring from the discharge valve and discharge cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a support device is used to support the compressor body, then the compressor body is stabilized, but vibration and noise are transferred to the compressor casing
Solution Approach 1:
The patent introduces a vibration isolation member as an intermediary component between the support device and the compressor casing. This mediator absorbs and attenuates vibration energy, preventing it from being transmitted to the compressor casing and shell, thereby reducing noise while maintaining compressor body stability
Solution Approach 2:
The patent replaces direct mechanical contact and rigid support structures with vibration isolation mechanisms that use elastic or damping materials. This substitution transforms the rigid mechanical transmission path into a compliant system that dissipates vibration energy rather than transmitting it
2Device complexity
If the compressor body is directly supported on the compressor casing, then the structure is simplified, but collision between compressor body and shell occurs during operation
Solution Approach 1:
The vibration isolation member serves as a mediator between the compressor body and compressor casing, providing both mechanical support and collision prevention. This intermediary component allows the structure to remain relatively simple while ensuring the compressor body does not directly collide with the shell during operation
Solution Approach 2:
The patent incorporates vibration isolation and cushioning elements in advance between the compressor body and casing, creating a protective buffer before any potential collision can occur. This beforehand cushioning prevents damage during operation while maintaining structural simplicity
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 solution effectively reduces the transfer of vibration and noise from the compressor body to the shell and shell cover, enhancing operational stability and reducing noise levels, particularly in the 4 kHz to 5 kHz frequency range.
Implementation Method 1
a rubber damper connecting the first spring arm and the second spring arm and configured to fix relative positions of the first spring arm and the second spring arm
Implementation Method 2
The rubber damper may connect the at least one first spring arm with the at least one second spring arm and may fix position of the at least one first spring arm relative to the at least one second spring arm
Data Source
AI summary
A linear compressor includes a cylinder, a discharge valve, a valve spring pressing the discharge valve to close one side of the cylinder, and a spring support portion providing a support point for the valve spring to press the discharge valve. The valve spring includes a first spring arm whose center is connected to the discharge valve and extending spirally, a second spring arm spaced apart from the first spring arm by a predetermined distance with respect to an axial direction of the cylinder and extending spirally toward an outer portion according to a shape of the first spring arm, and a rubber damper connecting the first spring arm and the second spring arm and fixing relative positions of the first spring arm and the second spring arm.