Server Casing Airflow Resistance Reduction via Segmented Channels
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Solution Overview
Problem
The increasing compactness of electronic devices, such as servers, leads to high airflow resistance due to occupied space by electronic components like hard disks, necessitating high-speed cooling fans that result in vibration noise and reduced efficiency.
Innovation Solution
A cooling device with a casing design featuring an accommodating groove and airflow management through strategically placed openings and a solid block to reduce airflow resistance, allowing for efficient cooling while minimizing noise and maintaining hard disk efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If electronic components are densely packed to reduce device size, then device compactness is improved, but airflow resistance increases
Solution Approach 1:
The casing is divided into multiple air channels that segment the airflow path. This segmentation allows cooling air to flow through multiple parallel paths around electronic components, reducing the resistance caused by dense component packing while maintaining compact device dimensions.
Solution Approach 2:
The invention introduces vertical air channels that extend through different height levels of the casing. By utilizing the vertical dimension for airflow paths, the design enables efficient heat dissipation without increasing the horizontal footprint, thus maintaining compactness while improving airflow.
2Temperature
If cooling fan speed is increased to overcome airflow resistance, then cooling effectiveness is improved, but vibration noise increases
Solution Approach 1:
Multiple air channels divide the total airflow requirement into several smaller parallel streams. This reduces the speed requirement for each individual fan, lowering vibration noise while maintaining overall cooling effectiveness through the combined flow of multiple channels.
Solution Approach 2:
Each air channel is designed with specific local characteristics optimized for its function. The channel geometry, cross-sectional area, and path length are locally adjusted to minimize resistance and enable efficient flow at lower fan speeds, reducing noise while maintaining cooling performance.
3Temperature
If cooling fan speed is increased to overcome airflow resistance, then cooling effectiveness is improved, but hard disk drive efficiency decreases
Solution Approach 1:
The air channels are strategically routed to create separate airflow zones. Some channels provide cooling airflow to electronic components while other channels allow quiet operation near hard disk drives, reducing the impact of fan-induced vibrations on read/write operations.
Solution Approach 2:
The casing structure with its multiple air channels acts as an intermediary that decouples the high-speed cooling fan from the hard disk drives. The channel geometry and airflow distribution create a buffer zone that reduces vibration transmission to the hard disks, maintaining their operational 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
The solution effectively reduces airflow resistance and noise, enhancing the cooling efficiency of electronic components while maintaining the operational integrity of hard disks.
Implementation Method 1
when a cooling fan is operating, the cooling fan must create a high speed airflow in the server to overcome the airflow resistance
Implementation Method 2
A cooling air flow through the accommodating groove 1213, entering by the air inlet 127, can cool the hard disks 22
Data Source
AI summary
A cooling device applied to a server or other casing reduces airflow resistance. A covered chassis defines a accommodating groove and includes two opposite ends, an air inlet located at one end and an air outlet located at the other end, the air outlet communicating with the air inlet. The cover of the chassis is mounted adjacent a side of the chassis and seals the accommodating groove. The cover defines first and second openings corresponding to the accommodating groove. Part of cooling air exits the casing through the accommodating groove and the air outlet, the rest of the cooling air exits the casing through the first opening, re-enters the casing through the second opening and exits the casing through the air outlet.