Concentric Round Filter Element With Leak-Tight End-Disk Sealing
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Solution Overview
Problem
Existing filter elements for gaseous fluids face challenges in maintaining high filtration performance over extended operation durations, particularly in preventing air leakage and ensuring reliable sealing between filter medium bodies.
Innovation Solution
A round filter element design featuring a flow-tight connection element that engages the end disks of neighboring filter medium bodies, providing multiple seal locations to prevent air leakage and maintain radial flow, with the connection element being a separate component that forms a structural unit with the filter medium bodies and can be inserted into a filter housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple filter medium bodies are arranged concentrically, then filtration efficiency is improved, but device complexity increases
Solution Approach 1:
Multiple filter medium bodies are arranged in a concentric nested configuration, with the inner filter medium body positioned within the outer filter medium body. This nested arrangement allows both particle filtration and harmful gas filtration to occur simultaneously in different radial zones, improving filtration efficiency while utilizing vertical space efficiently.
Solution Approach 2:
The connection element serves multiple functions: it mechanically connects the inner and outer filter medium bodies, provides sealing surfaces to prevent leakage, and supports sealing means (such as sealing rings or sealing flaps). This multi-functionality reduces the need for additional separate components, thereby managing device complexity despite the multi-body configuration.
2Reliability
If a flow-tight connection element is introduced to seal between filter medium bodies, then air leakage prevention is improved, but manufacturing complexity increases
Solution Approach 1:
The connection element acts as an intermediary component that integrates sealing surfaces and sealing means (such as sealing rings or sealing flaps) to ensure flow-tight connections between the inner and outer filter medium bodies. This dedicated sealing component prevents air leakage at the interfaces while allowing the filter medium bodies themselves to be manufactured separately using standard techniques.
Solution Approach 2:
The sealing function is segmented into a separate connection element that can be manufactured independently from the filter medium bodies. This segmentation allows each component to be optimized and manufactured using appropriate processes, with the connection element providing specialized sealing surfaces and integrating sealing means that would be difficult to incorporate into the filter medium bodies themselves.
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
Ensures a reliable, long-lasting filtration performance by preventing air leakage and maintaining radial flow, allowing for efficient filtration of particles and harmful gases, suitable for use in fuel cell applications.
Implementation Method 1
a flow-tight separately embodied connection element is connected to one end disk of a filter medium body and engages an end disk of the neighboring filter medium body and produces a flow-tight connection to the end disk of the neighboring filter medium body
Implementation Method 2
a particle filter medium body by means of which particles are separated from the gaseous fluid and which is configured as a hollow body. The round filter element comprises furthermore a harmful gas filter medium body for harmful gas filtration
Data Source
AI summary
A round filter element for gaseous fluid has a particle filter medium body formed as a hollow body for particle filtration and a separate harmful gas filter medium body formed as a hollow body for harmful gas filtration arranged concentrically to the particle filter medium body; together they surround an inner flow chamber. Particle filter medium body and harmful gas filter medium body each have opposed end faces with end disks. A flow-tight separate connection element is connected to an end disk of the particle filter medium body and engages a neighboring end disk of the harmful gas filter medium body or is connected to an end disk of the harmful gas filter medium body and engages a neighboring end disk of the particle filter medium body to produce a flow-tight connection with the neighboring end disk, respectively. A filter device is provided with such a round filter element.