Negative Pressure CDU Heat Dissipation System With Pressure Regulator
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Solution Overview
Problem
Existing negative pressure CDU systems exhibit suboptimal fluid control responsiveness and complex system structures and control logic, which can lead to inefficiencies and potential fluid leakage issues.
Innovation Solution
A negative pressure CDU heat dissipation system comprising a cold plate assembly, a liquid pump, a heat exchanger, a pressure regulator, and a secondary protection device, which includes a bypass valve and a stop valve, to regulate liquid pressure and ensure safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a negative pressure CDU system is used to prevent fluid leakage, then reliability is improved, but system structure and control logic become complex
Solution Approach 1:
The system is divided into distinct functional modules: cold plate assembly, liquid pump, heat exchanger, and pressure regulator. Each module performs a specific function, making the overall system easier to understand and maintain while ensuring reliable negative pressure operation for leakage prevention
Solution Approach 2:
The pressure regulator pre-adjusts the liquid pressure to below one atmosphere before the fluid enters the cold plate assembly. This preliminary pressure control ensures that negative pressure is maintained throughout the system, preventing fluid leakage at potential leak points
2Reliability
If a negative pressure CDU system is used to prevent fluid leakage, then reliability is improved, but fluid control responsiveness becomes suboptimal
Solution Approach 1:
The system incorporates pressure detectors that continuously monitor the liquid pressure in real-time. This feedback mechanism allows the pressure regulator to dynamically adjust the pressure control, maintaining negative pressure conditions while enabling rapid response to pressure changes and ensuring excellent fluid control responsiveness
3Reliability
If pressure regulator is used to maintain liquid pressure below one atmosphere, then fluid leakage is prevented, but system structure becomes complex
Solution Approach 1:
The pressure regulator is designed to automatically maintain liquid pressure below one atmosphere without requiring complex external control systems. The regulator self-adjusts based on inherent pressure differential mechanisms, simplifying the overall system structure while ensuring reliable leakage prevention
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 system operates safely and reliably with excellent fluid control responsiveness and simple structure and control logic, effectively maintaining liquid pressure below one atmosphere to prevent fluid leakage.
Implementation Method 1
The pressure regulator adjusts the liquid pressure within the pipeline to below one atmosphere
Implementation Method 2
The first temperature is regulated by the heat exchanger to be maintained at a set value
Implementation Method 3
The liquid outlet of the cold plate assembly is connected to the liquid inlet of the liquid pump, which pressurizes liquid flow
Data Source
AI summary
In the present disclosure, a negative pressure cooling distribution unit (CDU) heat dissipation system comprises a cold plate assembly, a liquid pump, and a heat exchanger. A liquid outlet of the cold plate assembly is connected to a liquid inlet of the liquid pump, the liquid pump is to pressurize liquid flow from the liquid outlet of the cold plate assembly. A liquid outlet of the liquid pump is connected to a liquid inlet of the heat exchanger, the heat exchanger is to perform heat exchange, and a liquid outlet of the heat exchanger is connected to a liquid inlet of a pressure regulator; the pressure regulator is to adjust liquid pressure within a pipeline to below one atmosphere. A liquid outlet of the pressure regulator is connected to a liquid inlet of the cold plate assembly. The first pressure detector is to detect a first pressure at the liquid inlet of the cold plate assembly; and the first temperature detector is to detect a first temperature at the liquid inlet of the cold plate assembly; wherein the first temperature is regulated by the heat exchanger to be maintained at a set temperature value. The system in the examples of the present disclosure operates safely and reliably, with excellent fluid control responsiveness and simple structure and control logic.