Liquid Filter Damping Element Vibration Isolation
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Solution Overview
Problem
Liquid filters in vehicles face reduced filtration efficiency and shortened service life due to vibration-induced particle discharge, as vibrations transmitted through the filter housing to the filter element reduce particle adhesion and increase differential pressure.
Innovation Solution
Incorporating a damping element with a modulus of elasticity less than 100 MPa, typically made of rubber, caoutchouc, silicone rubber, or composite materials, to attenuate vibrations between the filter housing and insert, thereby reducing vibration transmission and enhancing filtration efficiency without additional components or installation space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the filter insert is firmly connected to the housing using rigid materials (metal or hard plastic), then structural strength and sealing are improved, but vibration transmission to the filter element increases, reducing filtration efficiency
Solution Approach 1:
The patent introduces a damping element as an intermediary component between the filter insert and housing. This damping element has a modulus of elasticity of less than 100 MPa, making it softer than both the filter insert and housing materials. It mediates the connection by providing vibration damping while maintaining structural integrity and sealing, thus resolving the contradiction between structural strength and filtration efficiency.
Solution Approach 2:
The damping element is made from materials with specific mechanical properties (modulus of elasticity < 100 MPa) that differ from the rigid housing and filter insert materials. This creates a composite structure where the softer damping material is integrated between rigid components, allowing the system to benefit from both rigidity and vibration damping properties.
2Ease of manufacture
If rigid connection materials are used between the filter insert and housing, then manufacturing simplicity is improved, but vibration-induced particle discharge increases, shortening service life
Solution Approach 1:
The damping element serves as a mediator that can be integrated into existing manufacturing processes. It is positioned between the filter insert and housing, and can be incorporated as a separate component or integrated into one of the existing parts, maintaining manufacturing simplicity while extending service life through vibration damping.
3Reliability
If additional vibration damping components are added to the filter system, then filtration efficiency is improved, but device complexity and installation space requirements increase
Solution Approach 1:
The damping element is merged with either the filter insert or the housing structure, rather than being a completely separate additional component. This integration approach maintains vibration damping functionality while minimizing increases in device complexity and installation space requirements.
Solution Approach 2:
The damping element serves multiple functions: it provides vibration damping to protect filtration efficiency, maintains the sealing between filter insert and housing, and supports the structural connection. This multi-functionality reduces the need for additional separate components.
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 damping element effectively suppresses vibration-induced particle discharge, improving filtration efficiency and extending the service life of the filter by reducing the transmission of vibrations from the housing to the filter insert, thus protecting downstream components and maintaining filter effectiveness.
Implementation Method 1
the filter insert is fixed to the connection element via at least one damping element in such a way that the transmission of vibrations from the housing to the filter insert is damped
Implementation Method 2
the at least one damping element consists of a material with a modulus of elasticity of less than 100 MPa, in particular rubber, caoutchouc, silicone rubber or a composite material
Data Source
Figure 1~2a
Figure 2b~2c
Figure 3a~3b
AI summary
The invention relates to a liquid filter (100), particularly for fuels, having a housing (200), in which a filter unit (300) is arranged, and having a connection element (400), said connection element (400) being provided in order to supply the liquid into the liquid filter (100) and/or to drain the liquid out of the liquid filter (100), the filter unit (300) being affixed to the connection element (400). In order to increase the filtering effect and reduce the risk and frequency of sudden discharge of particles from the filter element (330) of the filter unit (300) to the clean side (380) of the filter unit (300), according to the invention the filter unit (300) is connected to the connection element (400) by means of at least one damping element such that the transfer of vibrations of the housing (200) to the filter unit (300) is damped. The invention also relates to a filter unit (300) for a liquid filter (100).