Modular Filter Relief Valve Interface for Axial Alignment
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Solution Overview
Problem
Existing fluid filter assemblies for motor vehicle engines face challenges in accurately indicating the remaining life of the filter media, leading to premature replacement and increased costs due to complex designs with built-in pressure relief valves and alignment issues during installation.
Innovation Solution
A fluid filter assembly with a modular interface that includes a pressure relief valve integrated into the top end cap, a divider to separate inner and outer fluid regions, and a mounting system that ensures axial alignment, allowing for accurate visual indication of filter media life without the need for a built-in pressure relief valve, thus reducing replacement costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a built-in pressure relief valve is integrated into the filter element, then the accuracy of indicating remaining filter life is improved, but the device complexity and replacement cost increase
Solution Approach 1:
The pressure relief valve function is segmented from the filter element and placed in the housing. The filter element becomes a simple replaceable cartridge while the housing contains the pressure relief mechanism and visual indication system, allowing independent replacement of the filter without replacing the expensive pressure relief valve assembly
Solution Approach 2:
A visual indication system using fluid level observation serves as an intermediary to indicate filter media saturation. The housing contains markings that show the fluid level, providing a visual cue when the filter media is saturated and the pressure relief valve has activated, eliminating the need for complex electronic sensors
2Reliability
If a built-in pressure relief valve is integrated into the filter element, then the reliability of pressure relief function is improved, but the replacement cost increases
Solution Approach 1:
The pressure relief valve is segmented from the filter element and placed in the permanent housing. This allows the expensive pressure relief valve and housing to remain while only the inexpensive filter element is replaced, significantly reducing replacement costs while maintaining the reliability of the pressure relief function
Solution Approach 2:
The filter element is designed as a disposable component that can be replaced frequently, while the pressure relief valve and housing are durable permanent components. This separation allows cheap filter elements to be replaced without wasting the expensive pressure relief mechanism
3Ease of operation
If a modular interface is used between filter element and housing, then the ease of installation and alignment is improved, but the device complexity increases
Solution Approach 1:
The interface uses asymmetric features including a keyed slot and protrusion arrangement that provides self-alignment and prevents misinstallation. The filter element has a specific orientation that automatically aligns with the housing outlet, ensuring proper axial alignment without requiring complex adjustment mechanisms
Solution Approach 2:
The modular interface is designed to be self-aligning and self-explanatory. The keyed slot and protrusion geometry automatically guide the filter element into the correct position during installation, eliminating the need for alignment tools or complex adjustment procedures
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 solution provides an accurate visual indication of filter media life, reduces the complexity and cost of replacing the filter assembly, and ensures proper axial alignment, thereby extending the filter's useful life and minimizing unnecessary replacements.
Implementation Method 1
the pressure relief valve is in communication with the upper interior portion and the lower interior portion of the interface housing of the interface structure for selectively allowing the fluid and/or air/vapor to pass through the vent passage of the filter element when the pressure across the filter element exceeds a predetermined pressure
Data Source
AI summary
A fluid filter assembly for filtering a fluid includes a housing base portion having an axially extending tube, a housing cover that is connected to the housing base portion to define an interior space, a filter element, and an interface structure. The filter element is disposed within the interior space and in engagement with the axially extending tube, the filter element having a filter media, a bottom end cap, a top end cap, and a mounting member defined by the top end cap, the mounting member having an axial wall with a vent passage therethrough and a radial wall that encircles the axial wall. The interface structure is connected to the housing cover and engages the top end cap of the filter element.