X-ray Tube Heat Sink With Gradient Base Thickness
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Solution Overview
Problem
X-ray tubes face challenges in maintaining an internal vacuum, reducing costs, and effectively removing heat while achieving appropriately sized electron and x-ray spots, which existing designs fail to address effectively.
Innovation Solution
The design incorporates an x-ray tube with a heat sink thermally coupled to the anode, featuring a base with varying thickness and an array of fins extending from it, optimized for heat transfer and vacuum maintenance, along with a seamless anode structure for improved electron and x-ray emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat sink is added to remove heat from the x-ray tube, then heat removal efficiency is improved, but device complexity increases
Solution Approach 1:
The heat sink is integrated with the anode structure, merging the heat removal function with the existing x-ray generation component. This combination allows heat to be conducted from the anode target area through the heat sink base and dissipated via fins, achieving effective heat removal without adding a completely separate system
Solution Approach 2:
The heat sink extends in the longitudinal direction away from the anode, utilizing the axial dimension for heat dissipation. The fins project radially outward, creating additional surface area in the radial dimension, thereby dissipating heat in multiple spatial dimensions rather than relying on a single direction
2Temperature
If the heat sink base thickness is reduced farther from the anode, then heat transfer efficiency is improved, but structural strength deteriorates
Solution Approach 1:
The heat sink base features non-uniform thickness with a gradient distribution: thicker sections near the anode where heat input is highest and structural support is most critical, gradually thinning toward the distal end where heat has already been conducted away. This local variation in thickness optimizes both heat transfer efficiency and structural strength at different locations
3Temperature
If an array of fins is added to the heat sink base, then heat dissipation is improved, but manufacturing complexity increases
Solution Approach 1:
The heat dissipation surface is segmented into multiple discrete fins rather than a continuous structure. This segmentation increases surface area for heat dissipation while allowing each fin to be manufactured as a simpler, standardized component that can be replicated and assembled
Solution Approach 2:
The fin array structure serves multiple functions: it provides thermal dissipation surface area, acts as a structural framework for the heat sink, and creates channels for potential fluid or air flow enhancement. This multi-functionality reduces the need for additional separate components
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 vacuum retention, reduces costs, and optimizes electron and x-ray spot sizes, improving heat transfer efficiency and maintaining a stable internal environment within the x-ray tube.
Implementation Method 1
The heat sink can be thermally coupled to the anode and can extend away from the anode along a heat sink longitudinal axis
Implementation Method 2
The heat sink can have a base and a fin extending from the base
Implementation Method 3
The heat sink can have a base and a fin extending from the base
Data Source
AI summary
An x-ray source can include an x-ray tube, and a heat sink for removal of heat from the x-ray tube. The heat sink can be thermally coupled to the anode and can extend away from the anode along a heat sink longitudinal axis. The heat sink can have a base and a fin extending from the base. The base can have a greater thickness nearer the anode, and a reduced thickness along the heat sink longitudinal axis to a smaller thickness farther from the anode.