Integral Filter Compression Seal with Keyed Adapter
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Solution Overview
Problem
Traditional filter seals in fluid processing applications lack a mechanism to ensure only validated filters are used, compromising system integrity, and often require secondary fixtures for proper sealing, which can be inefficient.
Innovation Solution
A keyed-type adapter/seal design featuring an oval end cap and cam mechanism within the housing receiver provides defined compression to O-ring seals, ensuring only validated filters are used and eliminating the need for additional fixtures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional O-ring seals are pressed into cups or onto post-type fixtures, then sealing is achieved, but additional fixtures are required and system integrity cannot be ensured
Solution Approach 1:
The patent combines the sealing function and the filter validation function into a single integrated component. The O-ring seal is incorporated directly into the filter cartridge housing rather than requiring separate fixtures, eliminating additional parts while ensuring that only validated filters can be installed and sealed properly
Solution Approach 2:
The filter cartridge housing serves multiple functions simultaneously: it provides the sealing surface for the O-ring, acts as the validation mechanism through the keyed configuration, and houses the filter element. This multi-functionality eliminates the need for separate fixtures and ensures system integrity
2Ease of operation
If sealed plates or spring fixtures are compressed against gaskets, then sealing is achieved, but the system requires additional components and installation complexity
Solution Approach 1:
The sealing function is merged with the filter cartridge itself. The O-ring is positioned in a groove on the filter housing that directly interfaces with the housing seat, eliminating the need for separate sealed plates or spring fixtures
Solution Approach 2:
The filter cartridge is designed to be self-sealing through its integrated O-ring and keyed configuration. When properly installed, the filter's own structure provides the sealing action without requiring external fixtures or additional components
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
This solution ensures the correct filters are utilized, maintaining system integrity and achieving a secure, efficient seal without secondary fixtures, thereby meeting or exceeding regulatory standards for biological organism reduction.
Implementation Method 1
The incorporation of a non-validated substitute type filter would negate the validation of the system itself. In addition, the oval shape of the male adapter used in conjunction with the cam in the housing receiver achieves a defined amount of compression on the O-ring seals.
Data Source
AI summary
A filter cartridge for installation in a housing having a housing seat includes a filtration media compiled in a cylindrical pack having a radially outer face, a radially inner face defining a central cavity, a first axial end face, and a second axial end face. An end cap having an attachment portion is bonded and sealed to an axial end of the filtration media. A hub portion connects the attachment portion to a non-circular locking portion axially spaced from the attachment portion. The locking portion extends radially beyond the width of the hub portion and includes a sealing face having at least one annular sealing element for sealing against the housing seat.