Jet Flow Generator for Storage Cooling
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Solution Overview
Problem
In computer chassis with densely packed heat-generating components, existing thermal management systems are inefficient as air passing over multiple components becomes heated, reducing its ability to effectively cool downstream components due to increased temperature differential.
Innovation Solution
A computer chassis design with divided airspace regions, utilizing a printed circuit board to separate airflows, where one airflow passes over initial heat-generating components and another bypasses them to enter through air openings, allowing for directed airflow past subsequent components, enhanced by flow generators and secondary baffles to increase airflow velocity and improve heat extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If air passes over multiple heat-generating components in sequence, then all components can be cooled by a single airflow path, but the air becomes progressively heated and loses cooling effectiveness for downstream components
Solution Approach 1:
The airspace is divided into a first region and a second region by a PCB layer, creating separate airflow paths. The first airflow path cools components in the first region, while the second airflow path cools components in the second region. This segmentation prevents heated air from one path from contaminating the cooling air for other components, resolving the temperature degradation issue while maintaining structural simplicity.
2Area of stationary object
If heat-generating components are densely packed to minimize footprint, then space utilization is improved, but thermal management becomes more difficult and less efficient
Solution Approach 1:
The PCB layer segments the densely packed components into two distinct regions with separate airflow paths. This allows efficient cooling of each region independently, preventing heat accumulation that would occur in a single-path system. The segmentation enables effective thermal management despite high component density and minimal footprint.
Solution Approach 2:
The PCB layer acts as an intermediary structure that both supports heat-generating components and divides the airflow paths. By positioning air openings in the PCB layer, the system creates controlled airflow separation without requiring additional partition structures, thus maintaining compact form factor while improving thermal management reliability.
3Device complexity
If a single airflow path is used to cool all components, then the system structure is simpler, but heat extraction efficiency from downstream components is reduced
Solution Approach 1:
The airflow path is segmented into two independent paths by the PCB layer. The first path extracts heat from components in the first region, while the second path extracts heat from components in the second region. This segmentation maintains simple system structure without additional complex mechanisms while significantly improving overall heat extraction efficiency by preventing thermal interference between component groups.
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 design enhances thermal management by ensuring that air entering the chassis can effectively cool multiple heat-generating components, improving heat extraction efficiency and reducing overheating, especially in densely arranged storage devices.
Implementation Method 1
passing the first input air past at least a first portion of the plurality of heat-generating components to heat the first input air
Data Source
AI summary
A computer chassis includes walls defining an airspace containing heat-generating components (e.g., storage drives). The airspace is divided into first and second regions, such as by a printed circuit board supporting the heat-generating components within the first region. An air input feeds both the first region and second region. Input air going through the first region first passes by a forward set of heat-generating components before continuing to a rearward set of heat-generating components to extract heat therefrom. Input air going through the second region bypasses the forward set of heat-generating components before being directed out through an air opening partway down the length of the chassis, after which this air passes by a rearward set of heat-generating components to extract heat.