Filter Cartridge Seal Assembly for Spill-Free Self-Draining Service
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Solution Overview
Problem
Existing filter systems for internal combustion engines face challenges in easy maintenance, as changing filters can result in fluid leaks and require specialized tools, leading to messy and difficult processes, especially when trying to drain fluids without dirtying the operator or causing spills.
Innovation Solution
A filter assembly design that includes a filter housing, filter cartridge, and seal member, where the seal member is integrated into a return passage to facilitate self-draining and minimize fluid spillage during filter replacement, allowing clean fluid to be retained until dirty fluid is drained, using a seal member that can be easily installed and removed without additional operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the filter cartridge is removed from the filter housing, then the filter can be replaced for maintenance, but fluid leaks onto the operator and surrounding components
Solution Approach 1:
The system performs preliminary draining of fluid from the filter housing into the return passage before the filter cartridge is fully removed. The seal member is positioned to seal the return passage opening, preventing fluid leakage during the maintenance process. This preliminary action of draining and sealing allows safe filter replacement without fluid spilling on the operator.
2Reliability
If specialized tools are used to change the filter, then the filter can be securely removed, but the process becomes more complex and difficult
Solution Approach 1:
The filter cartridge assembly is designed to be self-retaining through the interaction between the bottom endplate flange and the filter cartridge, eliminating the need for specialized tools. The seal member integrated into the return passage provides automatic sealing when the filter is removed, and the self-draining feature allows fluid to drain automatically into the return passage without additional operations or tools.
3Object-affected harmful factors
If the seal member is integrated into the return passage, then fluid spillage is minimized during filter replacement, but the seal member must be easily installable and removable
Solution Approach 1:
The seal member is merged with the bottom endplate to form an integrated assembly. The seal member is coupled to the bottom endplate such that they move together as a single unit during filter installation and removal. This merging ensures the seal member is always in the correct position to seal the return passage, minimizing fluid spillage while simplifying the installation and removal process since the seal member travels with the filter cartridge assembly.
Data Source
AI summary
A filter assembly includes a filter housing, a filter housing lid, a filter cartridge, an endplate, and a seal member. The filter housing defines a first cavity and comprises a return passage in fluid communication with the first cavity. The filter housing lid is selectively coupled to the filter housing and defines a second cavity coextensive with the first cavity. The filter cartridge is positioned within the first cavity. The endplate is coupled to a first end of the filter cartridge. The endplate is configured to interface with the filter housing. The seal member is coupled to the endplate and is configured to be received in the return passage. The endplate is configured to partially separate the filter housing from the filter cartridge.