Nested Gas Filter Element Structure for Reliable Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gas filter systems face challenges in achieving effective sealing between two filter elements, which are crucial for efficient filtration in applications like large combustion engines and fuel cells.
Innovation Solution
A gas filter system design where the outer filter element is sealed against the inner filter element between the second and fourth end caps, using sealing sections and a support tube for structural integrity, with optional monolithic end caps and integrated sealing sections made of polyurethane foam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If two filter elements are arranged in a common housing for sequential filtration, then filtration capability is improved, but sealing between filter elements becomes difficult to achieve
Solution Approach 1:
The patent implements a nested arrangement where the inner filter element is positioned within the outer filter element. The outer filter element includes an outer filter medium and the inner filter element includes an inner filter medium, with the inner filter element surrounded by the outer filter element. This nesting structure enables both filter elements to coexist in a compact configuration while maintaining distinct filtration zones, thereby improving filtration capability without compromising sealing.
Solution Approach 2:
The patent introduces sealing sections as intermediary elements between the outer and inner filter elements. These sealing sections are specifically designed to create reliable seals at the interface between the two filter elements, preventing gas leakage while allowing the nested structure to function. The sealing sections act as mediators that ensure proper sealing in the complex nested configuration.
2Reliability
If filter elements are sealed at multiple end caps, then sealing reliability is improved, but device complexity increases
Solution Approach 1:
The sealing sections are designed to perform multiple functions: they seal between the outer and inner filter elements, provide structural support, and enable the nested configuration. By making the sealing sections multi-functional, the patent reduces the need for additional separate components, thereby improving sealing reliability without proportionally increasing device complexity.
Solution Approach 2:
The patent combines the sealing function with the structural support function in the sealing sections. Rather than having separate sealing components and support structures, the sealing sections integrate both functions, reducing the total number of parts. This merging approach maintains sealing reliability while simplifying the overall device structure.
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, third and fourth end caps are open, wherein the outer filter element is closed at the second end cap, wherein the first filter medium is arrangeable to surround the second filter medium, such that the outer filter element is sealed against the inner filter element between the second end cap and the fourth end cap.