Filter Mount Cam Valve for Leak-Free Installation
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Solution Overview
Problem
Existing filter assemblies face challenges in ensuring proper seating and sealing between the filter element and the housing, leading to potential fluid leaks and incorrect element installation, which can result in inefficient filtration and contamination.
Innovation Solution
A filter assembly design featuring a mount with a valve member that moves axially when the filter element is rotated, utilizing inter-engaging connection formations such as lugs and ramp surfaces to ensure proper alignment and sealing, preventing fluid flow unless the elements are correctly assembled, and incorporating a cam action to open the valve for fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If a filter element is made detachable for replacement, then ease of maintenance is improved, but reliability of sealing between the filter element and housing deteriorates
Solution Approach 1:
The valve member is positioned in advance to block the flow path before the filter element is fully installed. This preliminary blocking action prevents fluid leakage during the installation process and ensures that proper seating must be achieved before flow can occur, thereby maintaining sealing reliability while preserving ease of maintenance
Solution Approach 2:
The valve member acts as an intermediary component between the detachable filter element and the housing. It mediates the sealing relationship by providing an additional mechanism (valve closure) that ensures reliability during the detachable connection process, allowing the filter element to be easily replaced while maintaining seal integrity
2Reliability
If seals are made reliable between filter element and housing, then fluid leakage is prevented, but device complexity increases
Solution Approach 1:
The valve member is merged with the flow path structure of the housing, combining the sealing function with the flow control function. This integration ensures reliable sealing through the valve mechanism while avoiding the need for separate complex sealing systems, thereby preventing fluid leakage without significantly increasing device complexity
3Reliability
If flow is restricted when filter element is not properly seated, then fluid leakage is prevented, but ease of operation deteriorates
Solution Approach 1:
The valve member is designed to automatically respond to the installation state of the filter element. When the element is properly seated, the valve self-activates to open the flow path; when improperly seated, it remains closed. This self-service mechanism prevents fluid leakage while maintaining ease of operation, as the system automatically indicates proper installation without requiring additional manual steps
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 design effectively prevents fluid leaks by ensuring proper seating and alignment of the filter elements, reducing the likelihood of incorrect installations and enhancing the reliability of the filtration process.
Implementation Method 1
a cam action between the lug and the ramp surface causing axial movement of the valve member when the filter element is then rotated relative to the mount
Data Source
AI summary
A filter assembly includes a filter element, and a mount having at least one port, each of the filter element and mount having inter-engaging connection formations where the filter element and mount can be detachably connected to one another, with the mount defining a flow path for fluid to flow between the port and the filter element. The mount includes a valve with a valve member which can move between an open position and a closed position. One of the filter element and the mount has at least one lug and the other of the filter element and mount has a ramp surface, the lug engaging the ramp surface when the filter element and mount are brought together along an axis and a cam action between the lug and the ramp surface causes axial movement of the valve member when the filter element is then rotated relative to the mount.