Negative-Pressure Immersion Cooling With Active Fluid Transfer
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Solution Overview
Problem
High-pressure environments in immersion cooling systems cause gaseous heat dissipation medium to escape, increasing maintenance costs and posing operational risks.
Innovation Solution
An immersion cooling system equipped with a pressure adjusting module that actively drives fluid from a first containing space to a second containing space, reducing pressure in the first space to a negative state and preventing gas from escaping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the pressure in the first containing space is increased to improve heat dissipation efficiency, then the heat dissipation performance is enhanced, but the gaseous heat dissipation medium easily escapes to the outside environment
Solution Approach 1:
The pressure adjusting module proactively creates and maintains a negative pressure state in the first containing space before gas escape can occur. By continuously adjusting the pressure to remain below external pressure, the system prevents the harmful effect of gas leakage rather than reacting to it after occurrence.
Solution Approach 2:
The system changes the pressure parameter from positive or atmospheric pressure to negative pressure (below external pressure). This parameter change fundamentally alters the pressure relationship between the containing space and the external environment, preventing gas escape while maintaining heat dissipation functionality.
2Loss of substance
If the pressure in the first containing space is reduced to prevent gas escape, then the heat dissipation medium is retained, but the system requires additional pressure adjustment mechanisms
Solution Approach 1:
The pressure adjusting module serves multiple functions: it maintains negative pressure to prevent gas escape, controls the phase change environment of the heat dissipation medium, and potentially regulates fluid flow between containing spaces. This multi-functionality reduces the need for separate dedicated components for each function.
Solution Approach 2:
The pressure adjusting module acts as an intermediary component between the heat dissipation system and the external environment. It mediates the pressure relationship, allowing the system to maintain negative pressure without requiring complex sealing or isolation mechanisms throughout the entire system.
3Reliability
If a sealed containing space is used to maintain pressure, then the heat dissipation medium is contained, but maintenance and refilling become more difficult
Solution Approach 1:
The pressure adjusting module enables dynamic pressure control, allowing the system to transition between sealed and open states as needed. The module can adjust pressure in real-time, facilitating maintenance operations while maintaining operational sealing, thus combining the benefits of both sealed and open systems.
Solution Approach 2:
The pressure adjusting module is pre-configured with control mechanisms that allow for easy pressure equalization before maintenance activities. This preliminary preparation enables seamless transition to maintenance mode without requiring complex disassembly or special procedures, improving ease of repair while maintaining system sealing during operation.
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
Maintains a negative pressure within the immersion cooling system, effectively preventing gaseous heat dissipation medium from escaping to the outside environment, thereby reducing maintenance costs and ensuring system integrity.
Implementation Method 1
the pressure adjusting module is adapted to actively drive a fluid in the first containing space to flow into the second containing space, such that a pressure in the first containing space is reduced to be less than an external pressure
Implementation Method 2
The liquid coolant absorbs the heat generated by the heating components of the motherboard and is gasified and condensed on a condensing pipeline
Implementation Method 3
The liquid coolant absorbs the heat generated by the heating components of the motherboard and is gasified and condensed on a condensing pipeline
Implementation Method 4
The heat dissipation droplets condensed on the pipeline fall back into the liquid coolant by gravity, and the process is in circulation to achieve the effect of heat dissipation
Data Source
AI summary
An immersion cooling system includes a box body, a condensing structure and a pressure adjusting module. The box body has a first containing space, the first containing space is adapted to contain a heat dissipation medium, and at least one heat generating component is disposed in the first containing space to be immersed in the heat dissipation medium which is in liquid state. The condensing structure is disposed in the first containing space and above the heat dissipation medium which is in liquid state. The pressure adjusting module is adapted to actively drive a fluid in the first containing space to flow into the second containing space, such that a pressure in the first containing space is reduced to be less than an external pressure. In addition, an electronic apparatus having the immersion cooling system and a pressure adjusting module are also provided.