3D Printed Geodesic IEC Electrodes for Shock Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional IEC electrodes used in neutron generators are limited by their stiffness, heat dissipation capabilities, and coherence, which affects neutron production efficiency and durability under shock and vibration conditions, especially in mobile applications like aerial drones.
Innovation Solution
The design features two cage-like electrodes approximating a sphere or geodesic polyhedron, with a torus-like mounting rim on the anode to reduce arcing and facilitate mounting, and a radially thicker cathode for improved heat dissipation. The electrodes are made of titanium or titanium alloys, and are 3D printed for enhanced structural integrity and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional wire-formed IEC electrodes are used, then the device can be manufactured with simple structures, but the electrodes lack sufficient stiffness to withstand shock and vibration in mobile applications
Solution Approach 1:
The electrode structure is segmented into multiple bar elements arranged in geometric patterns (triangles, squares, hexagons) to form cage-like configurations. This segmentation provides structural rigidity while maintaining manufacturability through modular assembly of standardized bar components.
Solution Approach 2:
The patent employs composite construction by combining conductive materials (such as aluminum or copper bars) with structural support elements. The electrodes integrate electrical conductivity requirements with mechanical strength requirements through composite bar arrangements that serve dual functions.
2Temperature
If conventional IEC electrodes are used, then the structure can be simple, but heat dissipation capability is insufficient during high-power neutron production
Solution Approach 1:
The electrode mass is divided into multiple discrete bar segments arranged in geometric patterns, creating numerous heat dissipation pathways. This segmentation increases surface area for heat transfer while maintaining electrical conductivity through the bar connections.
Solution Approach 2:
Different regions of the electrode structure have optimized local properties - bars are positioned and dimensioned to create varying heat dissipation characteristics in different zones. The geometric arrangements (triangles, squares, hexagons) provide localized thermal management optimized for specific operational requirements.
3Temperature
If the cathode bar radial thickness is increased for better heat dissipation, then heat dissipation improves, but the overall device size increases
Solution Approach 1:
The cathode bars are positioned with greater radial thickness specifically in regions requiring enhanced heat dissipation, while other regions maintain minimal necessary thickness. This localized quality enhancement provides optimal heat management without uniformly increasing overall device volume.
Solution Approach 2:
Heat dissipation is enhanced by utilizing the radial dimension of the bars rather than simply increasing length or volume. The geometric arrangements leverage the radial thickness of cathode bars to create efficient heat transfer pathways without proportionally increasing overall electrode volume.
4Reliability
If the electrodes are made more robust to withstand aerial use, then durability improves, but neutron production efficiency may be reduced
Solution Approach 1:
The robust electrode structure is segmented into geometric patterns (triangles, squares, hexagons) that provide mechanical rigidity while maintaining open configurations for efficient ion recirculation. The bar element segmentation allows structural strength without compromising the functional openness needed for high neutron production efficiency.
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 enhances the structural stiffness and heat dissipation of IEC electrodes, improving their ability to withstand aerial use while maintaining efficient neutron production, thus addressing the limitations of conventional electrodes.
Implementation Method 1
Inertial electrostatic confinement fusion electrodes contained within a vacuum chamber. A voltage is applied across the electrodes which causes the deuterium to ionize. The positive ions fall towards the negative cathode. Colliding ions fuse to produce neutrons
Implementation Method 2
The bar segments of the cathode have a radial thickness greater than the bar segments of the anode, promoting effective heat dissipation
Data Source
AI summary
An inertial electrostatic confinement fusion electrode assembly for a neutron generator has a cathode which is suspended within an anode within a vacuum chamber. Each electrode is 3D printed of metal such as a titanium alloy to have multiple bar segments which define multiple adjacent cells, for example an arrangement of hexagons and pentagons. The cathode and the anode are aligned such that each cell of the anode overlies a cell of the cathode. The anode has a torus-like mounting rim which supports multiple bar segments. The mounting rim has a central opening through which a down connector extends to the cathode. The mounting rim is engageable for supporting the anode within a vacuum chamber. The bar segments of the cathode have a radial thickness greater than the bar segments of the anode. The electrodes have shapes approximating a sphere or geodesic polyhedron.