Serial Dual-Impeller Pump Layout for High Head in Tight Cooling Space
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Solution Overview
Problem
Conventional liquid cooling systems for high-performance computers are physically large, making it difficult to install a large pump on the heat conductive block and meeting high head requirements, especially due to limited space.
Innovation Solution
A serial pump design with two impellers and a connecting channel is used, where the first impeller pressurizes the working fluid, which then flows through a connecting channel to the second impeller, increasing the flowing head and reducing the thickness of the pump, thereby improving space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a large pump is installed on the heat conductive block, then the flowing head requirement is met, but the volume of the cooling system increases
Solution Approach 1:
The pump is divided into two separate impellers (first impeller and second impeller) arranged in series, each contributing to the total flowing head. This segmentation allows the pump to achieve high head requirements without needing a single large pump, thereby reducing the overall volume of the cooling system while meeting performance requirements.
2Volume of moving object
If the pump volume is reduced to fit limited space, then space utilization improves, but the flowing head requirement becomes difficult to meet
Solution Approach 1:
The two impellers are arranged coplanarly (in the same plane) rather than stacking them in the thickness direction. This dimensional arrangement allows the pump to achieve high flowing head through lateral series connection while maintaining reduced thickness and fitting within limited space constraints on the heat conductive block.
3Stress or pressure
If a serial pump configuration with two impellers is used, then the flowing head is enhanced and thickness is reduced, but the device complexity increases
Solution Approach 1:
The first impeller and second impeller are merged into a single coplanar assembly with shared structural elements. The impellers are positioned in the same plane and connected through the pump body, creating an integrated unit that achieves high flowing head without proportionally increasing device complexity. The connecting channel and shared housing reduce the overall structural complexity compared to separate pump units.
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 serial pump configuration enhances the flowing head of the working fluid, reduces the thickness of the pump, and increases space utilization, effectively addressing the challenge of limited space on the heat conductive block.
Implementation Method 1
A first impeller is pivotally arranged in the first rotor chamber, and an outer periphery of the first impeller is arranged corresponding to the first outlet opening
Implementation Method 2
A second impeller is pivotally arranged in the second rotor chamber, and a center of the second impeller is arranged corresponding to the second inlet opening
Data Source
AI summary
A serial pump includes a pump body, a first impeller and a second impeller. A first rotor chamber, a second rotor chamber and a connecting channel are formed in the pump body. The first rotor chamber has a first outlet opening, the second rotor chamber has a second inlet opening, and the connecting channel is communicated between the first outlet opening and the second inlet opening. The first impeller is pivotally arranged in the first rotor chamber, and an outer periphery of the first impeller is arranged corresponding to the first outlet opening. The second impeller is pivotally arranged in the second rotor chamber, and a center of the second impeller is arranged corresponding to the second inlet opening. Accordingly, the first impeller and the second impeller are serially arranged.