Rack-Mount Server Power Unit Cooling via Rear Fan Module
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Solution Overview
Problem
Traditional power units in rack-mount server systems face limited heat dissipation due to their size, which becomes inadequate as the output power increases, leading to ineffective self-cooling.
Innovation Solution
The integration of a fan module at the rear of the rack-mount server system, which draws airflow from the front, guides it to the power units through an air-guide plate, enhancing heat dissipation beyond self-cooling capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If power units use self-cooling with included fans, then device complexity is reduced, but heat dissipation capacity is limited by power unit size
Solution Approach 1:
The patent merges the cooling function for both server units and power units into a single centralized fan module located at the rear of the rack. This unified cooling system replaces individual fans in power units, reducing overall device complexity while significantly improving heat dissipation capacity through a larger, more powerful fan configuration.
Solution Approach 2:
The patent introduces air guide plates as intermediary components that direct airflow from the centralized fan module to the power units. These air guide plates enable efficient heat dissipation by channeling cool air through power unit interiors and directing hot air exhaust, achieving effective cooling without requiring fans within each power unit.
2Temperature
If power unit size is increased to improve heat dissipation, then heat dissipation capacity is improved, but device adaptability to standard rack configurations is reduced
Solution Approach 1:
The patent combines the cooling resources of the entire rack into a single centralized fan module, allowing power units to benefit from high-capacity heat dissipation without increasing their individual sizes. This enables standard rack-mounted power unit dimensions to achieve superior cooling performance.
Solution Approach 2:
The patent shifts the cooling capacity enhancement from the horizontal dimension (power unit size) to the vertical dimension (centralized rear-mounted fan module). By positioning the fan module at the rear of the rack and using air guide plates to distribute airflow, the system achieves improved heat dissipation while maintaining compact power unit dimensions and standard rack adaptability.
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 improves heat dissipation for power units by utilizing the fan module's airflow, ensuring more efficient cooling than traditional self-cooling methods.
Implementation Method 1
a fan module (30) fixed to the rack (10) to draw an airflow into the rack (10) from a front end of the rack (10) to dissipate heat
Implementation Method 2
A part of the airflow produced by the fan module (30) is guided to the power units (40) to cool the power units (40)
Data Source
AI summary
A rack-mounted server system includes a rack, a number of server units mounted in the rack adjacent to a front end of the rack, a fan module, and a number of power units located beside the server units. The rack includes a back wall defining an air outlet aligned with the server units. The fan module is fixed to the back wall and fitted in the air outlet. The power units are arranged in front of the fan module. An air-guide plate is mounted in the rack between the fan module and the power units to guide a part of the airflow generated by the fan module to flow through the power units.