Double-Sided Liquid Filter With Mesh Weld Lines
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Solution Overview
Problem
Existing filtration devices for liquids used in internal combustion engines, such as those containing AUS32 solutions, are inefficient in terms of size, cost, and effectiveness, as they do not optimize filtration capacity and can foul catalytic converters due to impurities.
Innovation Solution
A filtration device with at least two superimposed layers of filter media, where the external faces are made from water-permeable materials and feature weld lines forming a mesh structure, allowing filtration from both sides and providing rigidity, optimized flow distribution, and reduced thickness, along with a peripheral weld connection and strategically positioned intake connector for enhanced liquid circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional single-sided filtration device is used, then the structure is simple, but the filtration capacity is limited and the device size is large
Solution Approach 1:
The patent transitions from single-sided filtration to double-sided filtration by adding a second filtering face, effectively utilizing both surfaces of the filter media. This dimensional change in filtration approach doubles the active filtration area without proportionally increasing device volume, thereby improving filtration capacity while maintaining compact size.
Solution Approach 2:
The filter media is segmented into multiple layers with different filtration functions (coarse filtration layer and fine filtration layer). This segmentation allows each layer to perform specific filtration tasks, optimizing the overall filtration capacity while maintaining a compact structure that processes liquid more efficiently than conventional single-layer designs.
2Reliability
If multiple layers of filter media are added to increase filtration capacity, then the filtration efficiency improves, but the device thickness and complexity increase
Solution Approach 1:
By implementing double-sided filtration, the patent effectively distributes the filtration load across two faces of the device. This allows the use of multiple filter layers without proportionally increasing device thickness, as both faces contribute to filtration capacity. The complex multi-layer structure is balanced by utilizing the third dimension (both faces) for filtration.
Solution Approach 2:
The patent combines multiple filtration layers (coarse and fine filtration layers) into a single integrated filter element that performs both coarse and fine filtration simultaneously. This merging of functions into one compact unit achieves high filtration efficiency without requiring separate devices or complex assembly structures.
3Reliability
If the filter media thickness is increased to improve filtration, then the filtration capacity improves, but the liquid flow resistance increases
Solution Approach 1:
The filter media is divided into functionally distinct layers: a coarse filtration layer for initial particle removal and a fine filtration layer for polished filtration. This segmentation allows liquid to progress through layers of decreasing pore size, maintaining flow rate while achieving high filtration capacity. Each layer handles a specific portion of the filtration task, preventing the flow resistance that would result from using a single thick layer.
Solution Approach 2:
By implementing double-sided filtration, the patent effectively doubles the active filtration area. This allows the use of thinner filter media per face while maintaining or improving overall filtration capacity, as the total filtration surface area is increased. The liquid flow is distributed across two faces, reducing flow resistance compared to a single thick filter.
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 filtration device achieves reduced size and cost while maintaining filtration efficiency, allowing for uniform liquid circulation and improved heat exchange, facilitating faster thawing and reduced manufacturing complexity.
Implementation Method 1
A weld line locally produces a compression of the filter media (by reducing the thickness to the thickness of the filtration material without the porosities, and therefore by locally increasing the density of the filtering element, thus freeing up the cross section for passage of the liquid)
Implementation Method 2
the first external face and the second external face are each produced at least locally from a water-permeable material
Data Source
AI summary
Disclosed is a filtration device for a liquid, including: at least two superimposed layers of filter media having weld lines creating strips between them, the layers of filter media having weld lines being superimposed such that the weld lines of one layer form, with the weld lines of the other layer, a mesh structure when viewed at an angle normal to the layers of filter media; a first external face and a second external face each being produced at least locally from a water-permeable material, the layers of filter media being positioned between the external faces; and an intake connector used for drawing liquid in through the filtration device.