Fuel Filter Passage with Upward Flow and Element Locking
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Solution Overview
Problem
Existing fuel-water separators in canister filter systems fail to maximize water removal and often result in water collection at the first stage of filtering, reducing efficiency, and top-loaded filter elements can fall out of the canister during installation.
Innovation Solution
A filter element design with a center tube and central fluid supply tube combination that allows upward fuel flow, incorporates a hydrophobic membrane to repel water, and features a locking mechanism to secure the element in place, ensuring efficient water separation and stable installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fuel flows upward into the filter media, then the filter system can be assembled with the filter element loaded onto the filter base, but water droplets fail to collect in the water bowl effectively
Solution Approach 1:
The patent inverts the conventional downward flow direction by implementing upward fuel flow through the filter media. The filter element is designed to be loaded onto the base first (top-loaded), and fuel is directed to flow upward through the filter media from the base, reversing the traditional flow pattern to enable effective water collection in the water bowl while maintaining easy assembly.
2Ease of operation
If the filter element is designed for top-loading onto the canister, then assembly is simplified, but the element may fall out if the canister is tipped upside down before securing
Solution Approach 1:
The patent incorporates a locking mechanism that engages preliminarily during the assembly process. As the filter element is loaded onto the canister base, the locking mechanism automatically engages to secure the element in place, preventing it from falling out even if the canister is tipped upside down before final securing with fasteners or threads.
3Strength
If a center tube is used to support the filter media, then structural support is provided, but the element lacks adequate retention and may fall out during installation
Solution Approach 1:
The patent merges the center tube's dual functions by integrating both structural support and retention capabilities into a single component. The center tube is designed with features that provide mechanical support for the filter media while simultaneously incorporating retention features that prevent the element from falling out during installation and operation.
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
Enhances water removal efficiency by forcing fuel to flow through a hydrophobic filter media that repels water, directing it into a collection bowl, while the locking mechanism prevents the element from falling out, ensuring stable assembly and effective filtration.
Implementation Method 1
a hydrophobic membrane to repel water
Data Source
AI summary
A center tube and a central fluid supply tube combination includes a center tube body defining a longitudinal length, and a central reservoir. The center tube also includes an apertured annular wall extending axially the majority of the longitudinal length, and a first annular solid wall extending axially from the apertured annular wall. A central fluid supply tube is disposed in the central reservoir, and includes a second annular solid wall that is radially surrounded by the apertured annular wall of the center tube. The second annular solid wall defines a supply passage with a fully circular flow flux.