Variable Volume Container for Liquid Immersion Cooling Pressure Management
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Solution Overview
Problem
Existing liquid immersion cooling systems for electronic devices face challenges in preventing coolant escape and managing pressure changes, which can lead to design restrictions and increased complexity, especially when using expensive coolants that do not boil.
Innovation Solution
Incorporating a container within the liquid immersion bath that changes volume with gas phase pressure changes, connected to the outside to maintain consistent internal pressure, reducing the need for high-pressure resistance and allowing for a simpler design by minimizing coolant escape and facilitating maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a liquid immersion cooling system uses expensive coolants that do not boil, then cooling effectiveness is improved, but pressure management complexity and design restrictions increase
Solution Approach 1:
The system divides the cooling apparatus into distinct functional segments: a bath body containing the liquid coolant and electronic devices, a separate container for gas phase accommodation, and a circulation path for coolant flow. This segmentation allows each component to be optimized independently, reducing overall system complexity while maintaining effective cooling with non-boiling coolants
Solution Approach 2:
The container acts as an intermediary element between the liquid coolant system and the external environment. It accommodates gas phase pressure changes without requiring the main bath body to be pressure-resistant, thereby simplifying the design while enabling the use of expensive non-boiling coolants for improved cooling effectiveness
2Reliability
If the bath body is made pressure-resistant to prevent coolant escape, then coolant containment is improved, but design flexibility and simplicity are reduced
Solution Approach 1:
The pressure management function is extracted from the bath body and transferred to a separate container. The bath body only needs to contain the liquid coolant, while the container handles gas phase pressure variations. This extraction allows the bath body to have simpler design with fewer restrictions, while coolant containment reliability is maintained through the combined system
Solution Approach 2:
The container can be designed with flexible walls that expand and contract to accommodate gas phase pressure changes. This flexibility allows the system to maintain pressure equilibrium and prevent coolant escape without requiring the rigid, complex pressure-resistant structure that would otherwise be needed in the bath body
3Stability of the object's composition
If a container with variable volume is added to manage pressure changes, then pressure equilibrium is improved, but device complexity increases
Solution Approach 1:
The container is designed with variable volume capability, allowing it to dynamically adjust its internal space in response to gas phase pressure changes. This dynamic adaptation maintains pressure equilibrium within the bath body without requiring complex active control systems, achieving stability through passive mechanical response
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 effectively restricts coolant escape, maintains consistent internal pressure, and simplifies the design of the cooling system, enhancing efficiency and reducing the need for high-pressure resistance, thus providing effective cooling for densely packed electronic devices.
Implementation Method 1
a container (10B) whose inside is connected to the outside of the bath body (2B), and has a volume which changes in accordance with a pressure of the gas phase portion
Implementation Method 2
a bath body (2B) that houses an electronic device (4B), is coupled to a circulation path (6B) through which a liquid coolant (3B) cools the electronic device (4B) immersed in the liquid coolant (3B)
Data Source
AI summary
A liquid immersion bath for an electronic device includes: a bath body that is capable of housing the electronic device, is coupled to a circulation path through which a liquid coolant which cools the electronic device immersed in the liquid coolant circulates, and includes a gas phase portion corresponding to a space free from the liquid coolant; and a container that is disposed in the gas phase portion and has a volume which changes in accordance with a pressure of the gas phase portion, wherein an inside of the container is coupled to an outside of the bath body.