Liquid Cooling Flow Control for Even Branch Pipe Distribution
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Solution Overview
Problem
Existing heat dissipation apparatuses face challenges in maintaining consistent coolant flow capacity across multiple boards, leading to temperature fluctuations and reduced stability, as the flow capacity of coolant in the main water pipe cannot be effectively controlled when boards are added or removed.
Innovation Solution
A heat dissipation apparatus comprising a main water pipe, branch water pipes, a water pump, and a controller that adjusts the flow capacity of coolant based on pressure differences measured by sensors, ensuring that each board receives a consistent flow, thereby maintaining optimal temperature and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If fan cooling is improved by increasing rotation speed and size, then heat dissipation capability is enhanced, but noise problem becomes conspicuous
Solution Approach 1:
The patent replaces the mechanical fan cooling system with a liquid cooling system. Instead of using a fan to force air circulation, the invention uses a liquid cooling apparatus with water pipes, coolant circulation, and heat exchange to achieve heat dissipation. This substitution eliminates the mechanical moving parts that generate noise while maintaining effective heat removal from electronic components.
2Productivity
If flow capacity of coolant is increased to cool more boards, then heat dissipation performance improves, but temperature change of coolant becomes relatively large
Solution Approach 1:
The patent implements dynamic control of coolant flow capacity based on the actual number of boards being cooled. The system uses a controller that receives feedback from sensors detecting board presence and adjusts the water pump's operation accordingly. This dynamic adjustment ensures optimal coolant flow for the current load, preventing excessive temperature changes while maintaining adequate heat dissipation performance.
Solution Approach 2:
The system incorporates feedback control through sensors that detect the number of boards mounted on the heat dissipation apparatus. This feedback information is used by the controller to adjust the coolant flow capacity in real-time. The feedback mechanism ensures that the coolant flow is optimized for the actual thermal load, preventing both overheating and excessive temperature fluctuations that would occur with fixed flow rates.
3Temperature
If proportional valve is controlled to adjust temperature of coolant, then temperature of coolant can be changed, but performance and service life of heat dissipation apparatus decrease
Solution Approach 1:
The patent replaces the proportional valve mechanism with a water pump-based flow control system. Instead of using a valve to restrict and adjust coolant flow, the invention uses a variable speed water pump to dynamically control the flow capacity. This substitution eliminates the mechanical wear and pressure losses associated with proportional valves, thereby improving the reliability and service life of the heat dissipation apparatus while maintaining temperature control capability.
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 solution ensures even distribution of coolant flow across all boards, preventing temperature fluctuations and enhancing the reliability and longevity of the heat dissipation apparatus by dynamically adjusting the flow capacity according to changing board configurations.
Implementation Method 1
a water pump, where the water pump is disposed on the main water pipe
Implementation Method 2
the branch water pipe is configured to cool a board mounted on the branch water pipe
Implementation Method 3
the sensor is configured to obtain inflow pressure of coolant flowing into the branch water pipe and outflow pressure of coolant flowing out of the branch water pipe
Data Source
AI summary
A heat dissipation controller is connected to a sensor and a water pump such that the controller correspondingly adjusts the water pump according to the current pressure difference and a preset pressure difference, to control a flow capacity of coolant flowing into a branch water pipe, until an absolute value of a difference between the current pressure difference and the preset pressure difference is less than or equal to a preset error amount. The controller can adjust the flow capacity of the coolant flowing into the branch water pipe to effectively ensure that flow capacities of coolant in all branch water pipes are distributed evenly, and to effectively improve stability of the heat dissipation apparatus.