Filter Element With Separate Inflow Surfaces for Clogging Resistance
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Solution Overview
Problem
Existing filter elements are prone to clogging by suspended particles, particularly in emergency situations such as snow or ice accumulation, leading to reduced filtration efficiency.
Innovation Solution
A filter element with a separate inflow surface and flow channel for a secondary fluid flow, allowing for emergency operation when the primary inflow surface becomes clogged, utilizing a filter bellows with a frame and separation elements to prevent cross-contamination and maintain filtration functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single inflow surface is used for fluid flow, then the filter element structure is simple, but the filter element becomes prone to clogging when suspended particles accumulate
Solution Approach 1:
The filter element is divided into multiple independent inflow surfaces (first inflow surface and second inflow surface) that can operate separately. When one surface becomes clogged, the other can continue to provide filtration, ensuring continuous operation and improving reliability without requiring complete system shutdown or maintenance.
Solution Approach 2:
The filter element incorporates a bypass mechanism with a bellows structure that can dynamically switch between normal filtration mode and emergency bypass mode. The bellows expands or contracts based on pressure differential, automatically activating the second inflow surface when the primary surface becomes obstructed, providing adaptive response to clogging conditions.
2Reliability
If a bypass channel is added for emergency fluid flow, then clogging resistance is improved, but the frame structure becomes more complex
Solution Approach 1:
The bypass channel and bellows structure are integrated into a single unified component rather than being separate additions. The bellows structure serves dual purposes: it acts as both the bypass channel conduit and the actuation mechanism, reducing the number of separate parts and simplifying the overall frame structure while maintaining clogging resistance.
Solution Approach 2:
The frame structure is designed to accommodate multiple functions within a single integrated assembly. The frame not only provides structural support but also houses the bypass channel, integrates the bellows actuation mechanism, and seals multiple inflow surfaces, thereby reducing overall complexity through functional integration rather than adding separate components for each function.
3Adaptability or versatility
If separate inflow surfaces are used for different fluid flows, then filtration functionality is maintained during clogging, but manufacturing complexity increases
Solution Approach 1:
The second inflow surface is positioned in a different spatial dimension or orientation relative to the first inflow surface, allowing both surfaces to be integrated into a single filter element structure. This dimensional arrangement enables separate fluid flow paths while maintaining a compact, manufacturable form factor that can be produced using conventional filter element manufacturing techniques.
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 continuous filtration performance by enabling a secondary fluid flow through a separate inflow surface when the primary surface is obstructed, preventing clogging and maintaining effective filtration even in adverse conditions.
Implementation Method 1
at least one second inflow surface for a second fluid flow separate from the first fluid flow, wherein the second inflow surface is separate from the first inflow surface
Data Source
AI summary
A filter element for filtering a fluid has a frame and at least one filter bellows arranged in the frame and provided with a first areal inflow surface for a first fluid flow and at least one second inflow surface for a second fluid flow separate from the first fluid flow. The second inflow surface is separate from the first areal inflow surface. A flow channel is provided to guide the second fluid flow and has a raw-side flow channel section arranged within the frame. A filter system provided with a filter housing is provided with such a filter element arranged exchangeably in the filter housing between a raw side and a clean side. The filter housing has a first inlet for the first fluid flow communicating with the first inflow surface and at least a second inlet for the second fluid flow communicating with the second inflow surface.