X-ray Generator Two-Phase Cooling System Heat Dissipation
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Solution Overview
Problem
Conventional X-ray high-voltage generators require complex and costly cooling systems to manage high peak power output, which are often bulky and heavy due to the need for efficient heat dissipation across varying distances, posing manufacturing and assembly challenges.
Innovation Solution
A two-phase cooling system with a heat sink directly thermally coupled to the power electronics circuit parts, utilizing a cooling element block that surrounds a cooling channel circuit filled with a working medium acting as a heat pipe, allowing for spatial flexibility and integration of additional functions like electrical insulation and shielding, reducing the need for separate components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional cooling system with temporary heat accumulators is used to dissipate maximum power loss, then heat dissipation capacity is improved, but device complexity and weight increase
Solution Approach 1:
The patent combines the temporary heat accumulator (thermal energy storage) and the heat sink into a single integrated cooling system. The thermal energy storage element is positioned adjacent to the power electronics circuit part, allowing it to absorb heat during high-power operation, while the heat sink continuously dissipates heat to the environment. This merging eliminates the need for separate, complex cooling components while maintaining effective heat management.
Solution Approach 2:
The integrated cooling system performs multiple functions simultaneously: the thermal energy storage element acts as both a heat buffer during peak power operation and a thermal conduit to the heat sink, while the heat sink serves both as a continuous cooling mechanism and a structural component. This multi-functionality reduces the overall number of components needed in the cooling system.
2Temperature
If cooling components are positioned at varying distances from heat sources, then heat dissipation coverage is improved, but manufacturing precision requirements increase
Solution Approach 1:
The cooling system is segmented into distinct functional zones: a thermal energy storage element positioned adjacent to the power electronics circuit part for localized heat absorption, and a heat sink positioned to receive heat from the storage element. This segmentation allows each component to be optimized for its specific function while reducing the need for precise positioning across varying distances, as each segment handles a specific portion of the heat dissipation process.
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 two-phase cooling system enhances heat dissipation efficiency, reduces the complexity and weight of the cooling system, and allows for more flexible design and manufacturing, while maintaining effective heat transfer and electrical insulation, thus addressing the challenges of peak power management in X-ray high-voltage generators.
Implementation Method 1
a cooling channel circuit (25) which is at least partially filled with a working medium (26) and acts as a heat pipe
Implementation Method 2
the cooling channel circuit (25) which is at least partially filled with a working medium (26) and acts as a heat pipe
Implementation Method 3
the at least one power electronics circuit part (21) is directly thermally coupled to the two-phase cooling system (22) for dissipating heat from the heat source at the heat sink (23)
Data Source
AI summary
An X-ray high-voltage generator comprises: a circuit arrangement having at least one power electronics circuit part, wherein the at least one power electronics circuit part is configured to form a heat source during operation; and a two-phase cooling system having a heat sink. The at least one power electronics circuit part is directly thermally coupled to the two-phase cooling system to cool the heat source at the heat sink. The two-phase cooling system has a cooling element block that spatially surrounds a cooling channel circuit. The cooling channel circuit is at least partially filled with a working medium, and is configured to act as a heat pipe.