Immersion Cooling System Liquid Level Control
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Solution Overview
Problem
The existing immersion systems for cooling electronic devices do not account for the volume changes of coolant liquids due to temperature variations, leading to potential overflow or insufficient cooling performance.
Innovation Solution
An immersion system with a tank configuration and control mechanism that includes multiple sensors and pumps to maintain the coolant liquid level between specific thresholds, using a fluorine-based coolant with a high expansion coefficient, and a control unit to manage the liquid level adjustments through the operation of outward and inward pumps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the immersion tank uses a sealed-type first tank and an open-type second tank with a single pump to circulate coolant, then the device structure is simple, but the liquid level cannot be precisely controlled leading to potential overflow or insufficient cooling
Solution Approach 1:
The immersion tank is divided into a first tank (sealed-type) and a second tank (open-type) with distinct functions. The first tank stores coolant and the second tank enables level detection and overflow prevention. This segmentation allows precise liquid level control while maintaining manageable system complexity through functional specialization of each tank type.
Solution Approach 2:
A third tank is introduced as an intermediary component to receive excess coolant when the liquid level in the second tank reaches a predetermined level. This intermediary tank acts as a buffer between the circulation system and the open second tank, preventing overflow while maintaining the overall system structure.
2Reliability
If the coolant liquid volume is not managed during temperature variations, then the system structure is simple, but coolant overflow or insufficient cooling occurs
Solution Approach 1:
A level sensor is installed in the second tank to detect the liquid level and provide feedback signals to the control unit. The control unit monitors the liquid level continuously and activates the pump or third tank based on the sensor readings, ensuring the liquid level remains within the optimal range despite temperature variations and coolant expansion.
Solution Approach 2:
The third tank is prepared in advance as a receiving container for excess coolant. When the liquid level in the second tank approaches the predetermined level, the control unit proactively redirects coolant to the third tank before overflow can occur, preventing the harmful effect rather than reacting to it.
3Productivity
If the liquid level in the immersion tank is not maintained, then the system operation is simple, but cooling performance deteriorates due to insufficient coolant contact
Solution Approach 1:
The level sensor continuously monitors the liquid level in the second tank and provides real-time feedback to the control unit. When the liquid level drops below the optimal range, the control unit activates the pump to transfer coolant from the first tank to the second tank, maintaining consistent cooling efficiency without requiring complex manual intervention.
Solution Approach 2:
The system automatically maintains the liquid level through the interaction of the level sensor, control unit, and pump. The sensor detects level changes and triggers pump operation as needed, allowing the system to self-regulate the coolant distribution between tanks without external control, thereby maintaining high cooling efficiency.
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 solution effectively prevents coolant overflow and ensures consistent cooling performance for electronic devices by maintaining the liquid level within optimal ranges, reducing the risk of spilling and ensuring efficient heat exchange.
Implementation Method 1
a heat exchanger coupled to the immersion tank through first piping
Implementation Method 2
a first pump provided in the first piping and configured to circulate the coolant liquid between the immersion tank and the heat exchanger
Implementation Method 3
a level sensor provided in the immersion tank and configured to detect a liquid level in the immersion tank
Implementation Method 4
The electronic devices are contained in the immersion tank and cooled by being immersed in the coolant liquid
Data Source
AI summary
An immersion system includes an immersion tank configured to store a coolant liquid and contain an electronic device, a heat exchanger coupled to the immersion tank through first piping, a first pump provided in the first piping and configured to circulate the coolant liquid between the immersion tank and the heat exchanger, a tank coupled to the immersion tank through second piping, a second pump provided in the second piping and configured to move the coolant liquid between the immersion tank and the tank, a level sensor provided in the immersion tank and configured to detect a liquid level in the immersion tank, and a controller configured to control the second pump in accordance with a detection signal of the level sensor.