Concavo-Convex Heat Dissipation Surface for High-Temperature X-Ray Tubes
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Solution Overview
Problem
Current heat dissipation techniques for high-temperature components, such as X-ray tube targets, are insufficient in effectively dissipating heat, leading to temperature management challenges in vacuum environments where convection cooling is not feasible.
Innovation Solution
A structural body with a heat dissipation portion featuring a first concavo-convex structure where first convex and concave portions are alternately arranged, with distances between them less than half the peak wavelength of emitted electromagnetic waves, enhancing heat dissipation by reducing reflection and increasing absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional heat dissipation techniques (such as black material coating or simple fin structures) are applied to high-temperature components, then the heat dissipation property is partially improved, but the heat dissipation effectiveness is insufficient for components heated to 700°C or more
Solution Approach 1:
The patent changes the surface structure parameters by creating a concavo-convex pattern with specific dimensional relationships to the peak wavelength of emitted electromagnetic waves. This structural parameter change increases the surface area and modifies the thermal radiation characteristics, enabling more effective heat dissipation at high temperatures where conventional coatings and simple fins are insufficient.
Solution Approach 2:
The patent transitions from conventional two-dimensional heat dissipation surfaces to a three-dimensional concavo-convex structure. By adding vertical dimensionality with convex and concave portions, the surface area is significantly increased, providing more pathways for thermal radiation and improving heat dissipation effectiveness without increasing the overall component footprint.
2Temperature
If the surface area of heat dissipation components is increased using conventional methods, then heat dissipation is improved, but the component size and complexity increase
Solution Approach 1:
The patent employs curved surface geometry with convex and concave portions instead of flat or simple linear fin structures. This curvature-based design increases surface area and enhances thermal radiation efficiency while maintaining a compact form factor. The curved surfaces also reduce stress concentration compared to sharp-edged conventional fins.
3Temperature
If black material is applied to the surface to increase light absorption rate, then heat dissipation is improved, but the material cost and manufacturing complexity increase
Solution Approach 1:
The patent enables the component structure itself to serve the heat dissipation function through its concavo-convex geometry, eliminating the need for separate black material coatings. The structural design inherently increases surface area and optimizes thermal radiation without requiring additional materials or coating processes, making the component self-sufficient for heat dissipation.
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 described structure significantly improves heat dissipation properties by reducing reflectance and increasing absorption, effectively managing high temperatures in X-ray generation and CT apparatuses.
Implementation Method 1
when the structural body is heated to 700° C. or more, a peak wavelength of an electromagnetic wave of heat emitted from the heat dissipation portion is 3 μm or less
Implementation Method 2
a first concavo-convex structure is provided where a plurality of first convex portions and a plurality of first concave portions are alternately arranged, wherein a distance between first convex portions close to each other among the plurality of first convex portions, and/or a distance between first concave portions close to each other among the plurality of first concave portions is less than half of the peak wavelength
Data Source
AI summary
The present invention is directed to providing a structural body in which the heat dissipation property is improved. A structural body heated to 700° C. or more includes a heat dissipation portion configured to dissipate heat of the structural body, wherein, on a surface of the heat dissipation portion, a first concavo-convex structure is provided where a plurality of first convex portions and a plurality of first concave portions are alternately arranged, wherein, when the structural body is heated to 700° C. or more, a peak wavelength of an electromagnetic wave of heat emitted from the heat dissipation portion is 3 μm or less, and wherein a distance between first convex portions close to each other among the plurality of first convex portions, and/or a distance between first concave portions close to each other among the plurality of first concave portions is less than half of the peak wavelength.