Looped Heat Dissipation Structure With Segmented Channels
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Solution Overview
Problem
High-performance electronic components generate excessive heat, requiring advanced heat dissipation structures that effectively manage thermal energy, but existing oscillating heat pipe structures face limitations in efficiency and fluid usage.
Innovation Solution
A heat dissipation structure featuring a heat conductive plate with a channel arrangement comprising wider and narrower channels, forming a loop, which accommodates fluid to absorb heat, vaporize, and condense, enhancing circulation and heat transfer through optimized channel geometry and angles, thereby improving heat dissipation capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a conventional oscillating heat pipe structure is used, then heat dissipation function is provided, but fluid usage is excessive and heat dissipation efficiency is limited
Solution Approach 1:
The channel is divided into multiple segments with different width characteristics: a wider channel portion for fluid accumulation and phase change, and a narrower channel portion for efficient fluid circulation. This segmentation allows the fluid to perform different functions in different regions, reducing total fluid usage while maintaining heat dissipation efficiency
Solution Approach 2:
Different portions of the channel are designed with different width characteristics to optimize local fluid behavior. The wider portion provides sufficient space for phase change and fluid storage, while the narrower portion enhances capillary action and fluid circulation speed, creating optimal local conditions for each function
2Productivity
If channel width is increased to improve fluid circulation, then heat dissipation efficiency improves, but device size increases
Solution Approach 1:
The channel is segmented into wider and narrower portions, allowing the device to achieve efficient heat dissipation in a compact form. The narrower portions reduce overall device footprint while the wider portions strategically placed for phase change maintain heat dissipation performance
Solution Approach 2:
The channel width varies along its length rather than maintaining a uniform width, creating a dimensional variation that optimizes both heat dissipation efficiency and device compactness. This one-dimensional variation in width allows the channel to perform multiple functions within a smaller overall area
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 structure accelerates fluid circulation and heat dissipation by minimizing resistance in wider channels and leveraging capillary action in narrower channels, reducing fluid usage and costs while maintaining efficient thermal management.
Implementation Method 1
the liquid coolant absorbs heat generated by the electronic component
Implementation Method 2
the liquid coolant would change its phase so as to be circulated
Implementation Method 3
leveraging capillary action in narrower channels
Data Source
AI summary
The disclosure is related to a heat dissipation structure. The heat dissipation structure is adapted to accommodate a fluid and thermally contact a heat source. The heat dissipation structure includes a heat conductive plate and a channel arrangement. The heat conductive plate is configured to thermally contact the heat source. The channel arrangement is located on the heat conductive plate, and the channel arrangement includes a wider channel portion and a narrower channel portion. The wider channel portion is wider than the narrower channel portion, and the wider channel portion is connected to the narrower channel portion so that the channel arrangement forms a loop. The channel arrangement is configured to accommodate the fluid and allow the fluid to absorb heat generated by the heat source through the heat conductive plate so as to at least partially change phase of the fluid.