Filter Element Drain Passage and Seal Design
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Solution Overview
Problem
Conventional filter systems face challenges such as increased resistance to fluid flow due to contaminant buildup, leading to the need for replacement or cleaning, which often results in fluid spillage during filter media removal, posing environmental and maintenance hazards.
Innovation Solution
A filter element design featuring a tubular element with a retainer element, valve seat member, and end caps that allow for fluid communication and sealing, enabling fluid to flow into a drain passage during separation, minimizing spillage and facilitating easy replacement without tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If filter media is removed for replacement or cleaning, then filter effectiveness can be restored, but fluid spillage occurs during removal
Solution Approach 1:
The patent extracts the filter element from the housing as a complete, self-contained unit that includes integrated drain and seal mechanisms. The drain passage and seal are built into the filter element itself, allowing fluid to be contained and drained during removal without spilling outside the housing. This extraction approach maintains filter effectiveness while eliminating the harmful spillage effect.
Solution Approach 2:
The patent introduces a drain passage as an intermediary channel that mediates between the filter element interior and the housing exterior during removal. This intermediary structure provides a controlled path for fluid to flow from the filter element into a collection container, preventing uncontrolled spillage while allowing the filter element to be removed for maintenance.
2Reliability
If filter media is removed for replacement or cleaning, then filter effectiveness can be restored, but service technicians are exposed to fluid on hands and clothing
Solution Approach 1:
The filter element is extracted as a complete unit with integrated fluid containment features. The drain passage and seal mechanisms are built into the filter element itself, allowing fluid to be contained and directed into a collection container during removal. This prevents fluid from contacting technicians' hands and clothing while still allowing filter replacement for restored effectiveness.
Solution Approach 2:
The drain passage serves as an intermediary that directs fluid flow away from the technician and into a collection container. This intermediary structure mediates between the filter element and the external environment, protecting the technician from fluid exposure while enabling filter maintenance.
3Reliability
If conventional drain sealing is used, then fluid can be contained, but complex double-concentric seals increase manufacturing cost
Solution Approach 1:
The patent merges the drain passage and seal functions into a single integrated structure on the filter element. Rather than using complex double-concentric seals, the design combines the sealing surface and drain channel into one component that is simpler to manufacture. This integration maintains fluid containment reliability while reducing manufacturing complexity and cost.
Solution Approach 2:
The seal structure on the filter element serves multiple functions simultaneously: it seals the drain passage, provides a mounting surface for the filter element in the housing, and guides the alignment during installation. This multi-functionality reduces the need for separate sealing components, simplifying manufacturing while maintaining reliable fluid containment.
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 design effectively reduces fluid spillage during filter media replacement, enhances maintenance efficiency, and prevents machine damage by allowing continued fluid flow through a bypass valve when filter media resistance reaches a threshold.
Implementation Method 1
the valve seat aperture is configured to provide a fluid seal with a valve poppet
Implementation Method 2
filter media around the tubular element and between the first and second end caps, with the filter media being configured to capture contaminates in fluid
Implementation Method 3
The second end cap is configured to provide a fluid seal between the filter element and a drain passage in the second housing, such that as the filter element is separated from the second housing, fluid flows from the filter element into the drain passage
Data Source
Figure 1
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Figure 3
AI summary
A filter element (16) may include a tubular element (26) defining an internal space (32), and a retainer element (34) associated with a first end (28) of the tubular element (26), wherein the retainer element (34) is configured to be coupled to a first housing (14). The filter element (16) may also include a valve seat member (36) in the internal space (32). The valve seat member (36) may include a valve seat aperture (38) configured to provide a fluid seal with a valve poppet (40). The filter element (16) may further include first and second end caps (42, 46) associated with ends (28, 30) of the tubular element (26). The filter element (16) may also include filter media (50) around the tubular element (26), and the second end cap (46) may be configured to provide a fluid seal (76) between the filter element (16) and a drain passage (24) in a second housing (18), such that as the filter element (16) is separated from the second housing (18), fluid flows from the filter element (16) into the drain passage (24).