Avionic Fuel Filter with Sealed Chambers for High Pressure
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Solution Overview
Problem
Current filtering devices for avionics fuel face structural limitations in sustaining high pressures, leading to breakthrough risks and environmental concerns due to non-reusable components, which restrict modular construction and eco-compatibility.
Innovation Solution
The design creates sealed filtering chambers by exploiting flow directionality, using a central duct with through-holes and concentric spacers to balance pressures and prevent breakthrough, allowing for modular and elastic construction with enhanced reuse and filtering efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pleated filtering sheets are used with metallic and/or plastic structures, then filtering capability is provided, but the structure cannot sustain high pressures and breakthrough risk increases
Solution Approach 1:
The filter is divided into multiple filtering elements arranged in parallel within a containment vessel, with each element independently supported by a rigid structure. This segmentation allows the system to distribute pressure loads across multiple elements rather than relying on a single pleated sheet, enabling sustained high-pressure operation without breakthrough.
Solution Approach 2:
The invention combines rigid metallic or plastic support structures with filtering materials (pleated sheets, cartridges, or discs) to create a composite filtering system. The rigid framework provides structural strength and pressure resistance, while the filtering materials perform the separation function. This composite approach resolves the contradiction between flexibility for filtering and rigidity for pressure resistance.
2Strength
If stiffeners are created by thermal melting of plastic portions and gluing, then structural support is provided, but modular construction is constrained and eco-compatibility is reduced
Solution Approach 1:
The filter assembly is segmented into separate, standardized components: containment vessel, rigid support structure, and filtering elements. Each component can be independently manufactured and assembled without thermal melting or gluing processes. This modular segmentation enables easy disassembly, reuse, and recycling of individual parts, improving eco-compatibility while maintaining structural strength.
Solution Approach 2:
The invention changes the manufacturing parameters from thermal melting and gluing to mechanical assembly methods. The rigid structures are formed through molding or fabrication processes that do not require permanent bonding of plastic portions, allowing components to be separated and reused. This parameter change in the manufacturing process enables modular construction while maintaining the necessary structural support.
3Stability of the object's composition
If filtering elements are made non-modular through thermal melting and gluing, then structural integrity is improved, but reuse level of components is reduced
Solution Approach 1:
The filter system is segmented into permanently assembled modular units where the rigid support structure and filtering elements are designed as separate but interconnected components. The containment vessel provides a stable framework that can be reused, while filtering elements can be independently replaced or reused. This segmentation maintains structural integrity through the rigid framework while enabling component reuse through standardized interfaces.
Solution Approach 2:
The rigid support structure serves multiple functions: it provides structural integrity, maintains the pleated configuration of filtering elements, and enables easy assembly and disassembly. The containment vessel and support structure form a self-contained unit that can be reused across multiple filtering cycles, while filtering elements can be independently managed. This self-service design maintains stability while facilitating reuse.
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 effectively manages high pressures, prevents breakthroughs, and maximizes filtering surface area per volume while enabling complete reuse of components, ensuring reliable and eco-friendly operation.
Implementation Method 1
The principle underlying the invention is the exploitation of the flow directionality in order to create sealed and adjacent 'filtering chambers', with balancing of pressures on the filtering septa
Implementation Method 2
filters used for filtering liquids and, in particular, avio fuel... capable of contrasting the pressure acting on the filtering elements which, once the solid contaminants have deposited and infiltrated
Data Source
AI summary
The present invention relates to a filtering device for liquids and in particular for filtering fuels for aeronautical use (avio).