Gas Filter Housing Alignment for Leak-Free Inlet Sealing
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Solution Overview
Problem
Existing filter devices suffer from leaks due to imperfect seals between the inlet duct and lid, requiring precise reinstallation of the filter element, which is time-consuming and prone to errors, leading to unpurified gas bypassing the filter cartridge.
Innovation Solution
The filter device incorporates positioning means to align the top cap with the lid during assembly and pressure means to secure the seal after alignment, ensuring correct positioning and reducing friction, thereby preventing leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the top cap is designed to fit tightly in the lid during mounting to ensure correct sealing, then sealing reliability is improved, but friction between the top cap and lid increases, complicating the mounting process
Solution Approach 1:
The sealing function is segmented from the alignment function. The positioning means (protrusions and recesses) handle alignment separately from the sealing means (gasket and pressure means), allowing mounting without excessive friction while ensuring both alignment and sealing reliability
Solution Approach 2:
The positioning means with protrusions and recesses perform preliminary alignment action during mounting, positioning the top cap correctly relative to the lid before the sealing action occurs. This preliminary positioning prevents misalignment without requiring tight friction-based fitting
2Reliability
If precise reinstallation of the filter element is performed to prevent leaks, then sealing reliability is improved, but mounting time increases
Solution Approach 1:
The positioning means with protrusions and recesses enable the top cap to self-align with the lid during mounting. This self-positioning mechanism eliminates the need for operator skill and time-consuming adjustment, while still ensuring correct alignment and sealing reliability
Solution Approach 2:
The positioning protrusions and recesses perform preliminary alignment action automatically during the mounting process, eliminating the need for subsequent adjustment or precise manual positioning, thus reducing mounting time without compromising sealing
3Ease of operation
If the inlet duct entrance is not perfectly aligned with the lid inlet, then mounting is simpler, but leaks occur allowing unpurified gas to bypass the filter
Solution Approach 1:
The alignment function is separated from the sealing function. Positioning means (protrusions and recesses) ensure precise alignment of the inlet duct with the lid inlet, while sealing means (gasket and pressure means) ensure leak-free connection. This segmentation allows mounting simplicity through clear positioning while maintaining sealing reliability
Solution Approach 2:
The positioning protrusions and recesses act as intermediary elements that guide and ensure correct alignment between the inlet duct entrance and lid inlet during mounting, preventing misalignment without complicating the mounting process
Data Source
AI summary
A filter device for the separation of impurities from a gas, including a filter housing having a lid and a pot; a filter element installed in the pot; a top cap has an inlet duct for receiving gas to be purified, the inlet duct connects to the inlet of the lid; a positioning device configured to position the top cap in relation to the lid when mounting the pot on the lid, and on the other hand with pressure device configured to press the entrance of the inlet duct against the inlet of the lid after mounting the pot on the lid, whereby the positioning device and the pressure device are designed in such a way that the positioning device come into action earlier than the pressure device during the mounting of the pot on the lid.