Water-Cooling Head with Integrated Pump and Stabilized Impeller
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Solution Overview
Problem
Conventional liquid-cooling heat dissipation modules, including water-cooling heads, face inefficiencies in heat transfer and reliability due to unsatisfactory performance of thermal greases and heat sinks, and the need for a more compact and flexible design.
Innovation Solution
A water-cooling head with a built-in pump, featuring a fixing element that stabilizes the impeller's rotation about a shaft, enhancing performance and reliability by ensuring consistent heat transfer and conduction through a thermal conduction structure, such as a fin group or sintered heat-dissipating structure, within the active space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a pump is built into the water-cooling head to reduce overall volume and simplify structure, then the device complexity is reduced, but the reliability deteriorates due to unstable impeller rotation and potential deviation from the axis center
Solution Approach 1:
The pump assembly is segmented into distinct functional components: the impeller, shaft, bearing, and fixing element are separate parts that can be independently designed and assembled. This segmentation allows each component to be optimized for its specific function while maintaining overall reliability.
Solution Approach 2:
A bearing is introduced as an intermediary component between the impeller shaft and the fixing element. This bearing acts as a mediator that supports the shaft, ensures stable rotation about the axis center, and prevents deviation or vibration, thereby resolving the reliability issue while maintaining the compact integrated design.
2Temperature
If thermal greases or heat sinks are used for heat dissipation, then the heat transfer function is provided, but the heat dissipating efficiency is unsatisfied
Solution Approach 1:
A liquid cooling system is implemented using a water-cooling head with an integrated pump. The pump circulates liquid coolant through channels in the heat dissipation module, enabling efficient heat removal through forced convection. This hydraulic approach significantly improves heat dissipating efficiency compared to passive thermal greases or heat sinks.
Solution Approach 2:
The passive thermal conduction system (thermal greases and heat sinks) is replaced with an active liquid cooling system. The mechanical pump-driven fluid circulation system substitutes for the insufficient thermal conduction mechanism, providing superior heat transfer performance through continuous coolant flow and enhanced convective heat dissipation.
3Ease of manufacture
If the impeller position and components are not precisely positioned, then the manufacturing complexity is reduced, but the heat transfer performance and heat conduction performance deteriorate
Solution Approach 1:
The bearing performs a self-aligning function, automatically positioning the shaft and impeller assembly during installation. This self-service mechanism ensures proper positioning and stable rotation without requiring complex precision alignment procedures, thereby maintaining both ease of manufacture and heat transfer performance.
Solution Approach 2:
The bearing serves as a positioning intermediary that ensures precise placement of the impeller shaft relative to the fixing element. This intermediary component provides the necessary geometric constraints for optimal heat transfer performance while keeping the assembly process simple and manufacturable.
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 solution enhances the performance and reliability of the water-cooling head by stabilizing the impeller's rotation and improving heat transfer efficiency, addressing the limitations of conventional technologies in heat dissipation and installation flexibility.
Implementation Method 1
the heat is transferred to the working medium through the base and thermal conduction structure sequentially
Implementation Method 2
The impeller is sheathed around the shaft and rotated about the shaft to drive the working medium to flow
Data Source
AI summary
A water-cooling head includes a casing, a base, a thermal conduction structure and a pump. An active space is defined by the base and the casing collaboratively. A working medium is filled in the active space. The pump includes a fixing element, a shaft and an impeller. After the fixing element is fixed, the fixing element is contacted with the base or contacted with the thermal conduction structure, and the shaft is fixed on the fixing element. Consequently, the impeller is stably rotated about the shaft, and the performance and the reliability of the water-cooling head are enhanced.