Water-Cooling Module With Immersed Stator and Partitioned Chambers
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Solution Overview
Problem
Conventional water-cooling modules suffer from poor heat dissipation efficiency due to a small heat exchange area between the heat sink and cooling fluid, and the stator assembly of the pump unit often overheats, leading to reduced module lifetime and operational inefficiency.
Innovation Solution
The water-cooling module design includes a main body with a partitioning board that separates it into a pump chamber and a heat exchange chamber, where both the rotor and stator assemblies of the pump unit are housed together in the pump chamber, allowing the stator assembly to be cooled by the cooling fluid, and a heat transfer unit with an enlarged heat dissipation area to enhance heat exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stator assembly is positioned outside the water-cooling module to protect it from cooling fluid contact, then the stator assembly is protected from damage, but the distance between the rotor assembly and stator assembly increases due to housing thickness, reducing pump unit operation efficiency
Solution Approach 1:
The patent merges the stator assembly and rotor assembly into the same pump chamber, allowing both components to be positioned close together for efficient magnetic coupling while the stator remains protected by the water-proof housing. This eliminates the need for thick housing walls that would separate the assemblies.
Solution Approach 2:
The patent introduces a water-proof housing as an intermediary structure that allows the stator assembly to be immersed in the cooling fluid while preventing direct contact damage. The housing acts as a protective barrier that enables both close positioning for efficiency and protection from fluid contact.
2Reliability
If the stator assembly is air-cooled to protect it from cooling fluid contact, then the stator assembly is protected from damage, but the cooling effect is poor causing overheating and reduced lifetime
Solution Approach 1:
The patent merges the cooling function with the stator assembly protection by allowing the cooling fluid to flow directly around the stator assembly through the water-proof housing, providing effective water-cooling instead of poor air-cooling while maintaining protection from direct fluid contact.
3Area of stationary object
If multiple column bodies or flow ways are disposed on the heat sink to enlarge heat exchange area, then the heat exchange area between heat sink and cooling fluid is increased, but the heat dissipation performance is only slightly enhanced and the effect is still poor
Solution Approach 1:
The patent transitions from two-dimensional surface area expansion (multiple column bodies) to three-dimensional volumetric heat exchange by creating multiple flow ways that allow cooling fluid to penetrate through the heat sink structure, significantly enhancing heat dissipation performance.
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
This configuration significantly improves heat dissipation performance, prevents stator assembly overheating, and prolongs the module's lifetime by ensuring efficient operation and cooling of the pump unit components.
Implementation Method 1
A cooling fluid is filled up in the main body to circulate within the pump chamber and the heat exchange chamber
Implementation Method 2
The heat exchange efficiency of such structure is not good. This is because the heat exchange or heat dissipation area between the heat sink and the cooling fluid is too small
Implementation Method 3
both the rotor and stator assemblies of the pump unit are housed together in the pump chamber, allowing the stator assembly to be cooled by the cooling fluid
Data Source
AI summary
A water-cooling module includes a main body. The main body has a receiving space and a water room partitioning board. The receiving space is partitioned by the water room partitioning board into a pump chamber and a heat exchange chamber. The pump chamber and the heat exchange chamber communicate with each other through at least one communication section. A pump unit is disposed in the pump chamber. A heat transfer unit is disposed in the heat exchange chamber. A cooling fluid is filled up in the main body to circulate within the pump chamber and the heat exchange chamber. The pump unit is entirely immersed in the cooling fluid so that the operation efficiency of the pump unit is enhanced and the main body is thinned. Moreover, the problem of overheating of the pump unit in operation is solved.