Filter Element Assembly With Fins for Drainage Layer Compression
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Solution Overview
Problem
Existing filter elements in gas systems suffer from liquid accumulation in the drainage layer, leading to increased pressure drop and re-contamination of the gas stream, reducing operating efficiency and necessitating frequent replacements.
Innovation Solution
A drainage promoter with fins that compress the drainage layer along its length, connected to the filter element via a hinge or resilient design, promoting quick and easy attachment, ensuring efficient liquid drainage without modifying the filter housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drainage layer is allowed to collect liquid without compression, then liquid can be separated and collected, but liquid accumulates forming a wet band that increases pressure drop and causes re-contamination
Solution Approach 1:
The drainage layer is divided into multiple compressed zones by introducing longitudinal fins that create segmented compression regions. This segmentation allows liquid to be efficiently drained from each zone while maintaining the structural integrity of the filter element, preventing wet band formation without compromising filtration efficiency.
Solution Approach 2:
The fins are pre-installed on the filter element to provide preliminary compression of the drainage layer before liquid accumulation occurs. This preliminary action creates drainage pathways that prevent liquid from forming a continuous wet band, thereby preventing pressure drop increase and re-contamination before they can occur.
2Productivity
If fins are introduced to compress the drainage layer, then liquid drainage is improved, but the device complexity increases
Solution Approach 1:
The fins are constructed as thin, flexible elements that can be easily attached to the filter element surface. This flexible design allows for simple integration without requiring complex structural modifications, thereby improving liquid drainage efficiency while minimizing the increase in device complexity.
Solution Approach 2:
The fins are designed to be self-attaching or easily attachable to the filter element, allowing the filter element itself to serve as part of the mounting structure. This self-service approach reduces the need for additional complex mounting mechanisms, improving drainage efficiency while keeping the overall device complexity low.
3Productivity
If the drainage layer is compressed by fins, then liquid can drain more efficiently, but the manufacturing complexity increases
Solution Approach 1:
The fins and filter element are designed to be manufactured as a single integrated component or pre-assembled unit. This merging of components simplifies the manufacturing process by reducing the number of separate parts that need to be handled and assembled, thereby improving liquid drainage efficiency without significantly increasing manufacturing complexity.
4Device complexity
If existing filter elements are used without drainage promoters, then the system operates simply, but liquid accumulation reduces operating efficiency and increases replacement frequency
Solution Approach 1:
The drainage promotion function is extracted as a separate, attachable component (the fins) that can be added to existing filter elements. This extraction allows the filter element to maintain its original simple structure while gaining enhanced drainage capability, thereby improving operating efficiency without significantly increasing system complexity.
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
Enhances liquid drainage from the drainage layer, reducing pressure drop and re-contamination, maintaining filter efficiency and minimizing system downtime and replacement costs.
Implementation Method 1
a drainage promoter comprising at least one fin which can be fitted to the element so that it extends at least part way along the element, and which then compresses the drainage layer along its length to promote drainage of liquid which has collected in the drainage layer
Data Source
AI summary
A filter element assembly (10) is disclosed comprising: a filter element (11) for location in a housing (12) of a filter (14), comprising a wall (15) of a filtration medium which defines a hollow space (16), for a gas stream to flow from the space through the wall, the filtration medium including a filtration layer (18), and a drainage layer (20) located outside the filtration layer, first (22) and second (24) end caps at opposite ends of the wall, one including a port (26) for a gas stream which communicates with the space; and a drainage promoter (56) comprising a fin (58) which can be fitted to the filter element so that it extends at least part way along the element, and compresses the drainage layer along at least part of its length, to promote drainage of liquid which has collected in the drainage layer.