Nested Gas Filter Element Sealing Against Leakage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gas filter systems lack effective sealing between two filter elements, which are typically arranged with one element surrounding the other, leading to potential gas leakage and inefficient filtration.
Innovation Solution
A gas filter system design featuring a closed outer filter element with an axial protrusion and a radially outward-facing sealing surface that engages with a softer sealing section on the inner filter element's end cap, along with additional sealing sections at various points to ensure secure alignment and sealing between the elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two filter elements are arranged with one surrounding the other in a gas filter system, then the filtration capability is improved, but sealing between the filter elements becomes insufficient leading to gas leakage
Solution Approach 1:
The inner filter element is nested within the outer filter element, with the first filter medium surrounding the second filter medium. This nested arrangement allows both filter elements to be integrated in a compact configuration while maintaining their individual filtration functions, and the sealing structure ensures gas-tight connection between the nested elements.
Solution Approach 2:
A sealing structure acts as an intermediary between the outer and inner filter elements. This sealing structure includes a sealing surface on the protrusion and a corresponding sealing section on the inner filter element's end cap, creating a gas-tight interface that prevents leakage while allowing the nested arrangement to function properly.
2Volume of moving object
If filter elements are arranged concentrically with one surrounding the other, then space utilization is improved, but alignment and positioning between elements becomes difficult
Solution Approach 1:
The outer filter element features an axial protrusion that breaks the perfect cylindrical symmetry, creating an asymmetric geometry. This asymmetric feature serves as a mechanical guide that aligns the inner filter element correctly during mounting, ensuring proper positioning while maintaining the overall concentric nested arrangement for efficient space utilization.
3Strength
If a closed end cap is used on the outer filter element, then structural integrity is improved, but complexity of the sealing system increases
Solution Approach 1:
The closed end cap structure is merged with the sealing function by integrating the sealing surface directly into the end cap's axial protrusion. This combination eliminates the need for separate sealing components, maintaining structural integrity while reducing overall system complexity. The sealing surface is formed as part of the end cap geometry rather than as an independent element.
Data Source
AI summary
A gas filter system including an outer filter element having a first filter medium arranged between a first end cap and a second end cap, and an inner filter element having a second filter medium arranged between a third end cap and a fourth end cap, wherein the first filter medium is arrangeable to surround the second filter medium, wherein the first, third and fourth end caps are open, wherein the outer filter element is closed at the second end cap, wherein the outer filter element has an axial protrusion at the second end cap that protrudes into the inner filter element and exhibits a radially outward facing sealing surface, and wherein the fourth end cap of the inner filter element has a second sealing section for sealing abutment against the sealing surface of the protrusion.