Cold Plate Connection Channel Layout for Lower Flow Resistance
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Solution Overview
Problem
Conventional liquid cooling systems face challenges in maintaining cooling efficiency while reducing flow resistance without decreasing the heat exchange area, primarily due to the use of smaller pipes that increase flow resistance and reduce the heat exchange area.
Innovation Solution
A liquid cooling device design featuring a connection channel that extends from one end to another end of the cold plates and side cover, allowing for a larger width without reducing the size of the condenser or inner fins, thereby maintaining the heat exchange area and enhancing heat dissipation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If smaller pipes are used to connect cold plates, then device complexity is reduced, but flow resistance increases and cooling efficiency deteriorates
Solution Approach 1:
The connection channel transitions from a conventional small-diameter pipe to a large-width channel formed by the side cover, effectively changing the dimensional characteristics of the flow path. This dimensional change allows the channel to have much larger cross-sectional area while maintaining a compact overall structure, thereby reducing flow resistance without increasing device complexity
Solution Approach 2:
The side cover acts as an intermediary component that creates the connection channel between cold plates. Instead of directly connecting cold plates with small pipes, the side cover mediates the connection by forming a large-width channel that reduces flow resistance while maintaining structural compactness
2Loss of energy
If condenser size is reduced to decrease flow resistance, then flow resistance decreases, but heat exchange area is reduced and cooling efficiency deteriorates
Solution Approach 1:
The connection channel uses a large width dimension rather than relying on increased pipe diameter or condenser size. This dimensional approach allows the flow path to have large cross-sectional area for reduced flow resistance while the condenser maintains its original size and heat exchange area
3Loss of energy
If pipe size is increased to decrease flow resistance, then flow resistance decreases, but device complexity and space requirements increase
Solution Approach 1:
The connection channel is merged with the side cover structure, combining the functions of structural support and fluid flow path into a single integrated component. This merging allows the channel to have large width for reduced flow resistance without adding separate large-diameter pipes that would increase device complexity
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 design reduces flow resistance and pressure drop, improving heat dissipation efficiency by up to 53% and reducing the pressure drop of the coolant by 250.3 Pa, while maintaining the heat exchange area.
Implementation Method 1
the connection channel is in fluid communication with the first cold plate and the second cold plate, and the connection channel extends from one end of the first cold plate, the second cold plate and the side cover to another end
Implementation Method 2
High-performance electronic devices, in particular, are often provided with liquid cooling systems, such as water cooling plates, to provide better heat dissipation
Implementation Method 3
The connection channel extends from one end to another end of the first cold plate, the second cold plate and the side cover, the connection channel can have larger width
Data Source
AI summary
A liquid cooling device includes a first cold plate, a second cold plate and a side cover. The second cold plate is stacked on the first cold plate. The side cover is disposed on one side of the first cold plate and the second cold plate. In addition, the side cover and the one side of the first cold plate and the second cold plate together form a connection channel. The connection channel is in fluid communication with the first cold plate and the second cold plate, and the connection channel extends from one end of the first cold plate, the second cold plate and the side cover to another end of the first cold plate, the second cold plate and the side cover.