Cold Plate Pump Layout for Lower Temperature and Reliable Water Intake
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Solution Overview
Problem
Existing heat dissipation modules using liquid cooling methods face issues with high pump temperatures and the inability of the pump to absorb water, leading to poor overall heat dissipation performance.
Innovation Solution
A cold plate design that includes a casing with an accommodating groove and a base with a heat transfer structure, a pump with a stator in the accommodating groove and a rotor in a drainage groove, and a partition plate to separate the action space into a water storage space and a heat absorption space, enhancing water storage and heat transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a liquid cooling heat dissipation module is used, then heat dissipation performance is improved, but the pump temperature becomes too high and the pump cannot absorb water
Solution Approach 1:
The pump is divided into two functional parts: the stator is placed in the accommodating groove where it contacts the working medium for cooling, while the rotor is placed in the drainage groove isolated from direct contact with hot water. This segmentation allows different parts of the pump to be positioned in thermally different zones, resolving the contradiction between heat dissipation performance and pump temperature control.
Solution Approach 2:
The working medium (cooling liquid) acts as an intermediary to transfer heat away from the stator through the accommodating groove. The stator is cooled by direct contact with the working medium, which circulates through the system to absorb and remove heat, preventing the pump from overheating while maintaining effective heat dissipation performance.
2Productivity
If the pump operates at high temperature, then heat dissipation efficiency is improved, but the pump cannot absorb water leading to poor overall performance
Solution Approach 1:
The pump components are segmented and positioned in different locations: the stator in the accommodating groove for cooling and water absorption, and the rotor in the drainage groove. This ensures that the part responsible for water absorption (stator) is located where the working medium is present, maintaining reliable pump operation while preserving heat dissipation efficiency.
Solution Approach 2:
The stator is pre-positioned in the accommodating groove where it can immediately contact and absorb the working medium before the pump begins operation. This preliminary positioning ensures that the pump is ready to absorb water effectively from the start of operation, preventing performance degradation.
3Reliability
If water storage area is increased, then pump water absorption is improved, but device volume increases
Solution Approach 1:
The water storage function is achieved not by increasing horizontal area but by utilizing vertical space through the accommodating groove that extends downward from the casing bottom. The working medium is stored in this vertical groove structure, allowing adequate water storage volume for pump absorption without significantly increasing the overall device footprint.
Solution Approach 2:
The accommodating groove containing the working medium is nested within the casing structure itself, integrating the water storage function into the existing device architecture. This nested arrangement allows the pump to access stored water without requiring separate external reservoirs, maintaining compact device volume while ensuring reliable water absorption.
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 effectively reduces the overall operating temperature of the pump, increases its service life, and enhances the overall heat dissipation performance by maximizing water storage and heat transfer areas.
Implementation Method 1
a heat transfer structure disposed on an inner side of the base for transferring a heat energy generated by a heat source in contact with an outer side of the base to a working medium in the action space
Implementation Method 2
the heated cooling liquid can flow to a lower temperature for heat exchange. After the heat exchange, the cooling liquid can flow to the electronic elements to be dissipated again to absorb heat energy
Implementation Method 3
a pump having a stator disposed in the accommodating groove
Data Source
AI summary
A cold plate is provided and includes: a casing formed with an accommodating groove; a base coupled to the casing to define an action space together with the casing, where the action space communicates with the accommodating groove; a heat transfer structure disposed on an inner side of the base for transferring a heat energy generated by a heat source in contact with an outer side of the base to a working medium in the action space; and a pump having a stator disposed in the accommodating groove.