Configurable Line Card Flapper for Chassis Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing chassis cooling systems are inefficient due to uniform cooling methods that prioritize the highest power dissipation line card, leading to excessive cooling of lower power dissipation cards and uneven airflow distribution, resulting in resource wastage and potential overheating.
Innovation Solution
The implementation of individually configurable line card flappers that adjust airflow based on the thermal and power needs of each line card, allowing tailored cooling and optimized airflow distribution within the chassis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uniform cooling is applied to all line cards based on the highest power dissipation, then the highest power dissipation line card is adequately cooled, but lower power dissipation line cards receive excessive cooling leading to inefficient resource utilization
Solution Approach 1:
The patent divides the chassis into multiple zones with individual line card slots, each having its own adjustable flapper. This segmentation allows independent airflow control for each line card, enabling tailored cooling based on actual power dissipation needs rather than uniform cooling for all cards.
Solution Approach 2:
The patent implements local quality by allowing each line card slot to have customized airflow characteristics through adjustable flappers. Each flapper can be positioned to provide the specific amount of cooling needed for that particular line card's power dissipation level, creating non-uniform local cooling zones within the chassis.
2Reliability
If cooling fans operate at high speed to cool the highest power dissipation line card, then adequate cooling is provided, but fan power consumption increases
Solution Approach 1:
The patent employs dynamic flappers that can adjust their position to control airflow distribution. This dynamic adjustment allows the system to optimize cooling distribution in real-time, enabling fans to operate at lower speeds while still providing adequate cooling to high-power line cards by directing more airflow to them through adjusted flapper positions.
Solution Approach 2:
The patent changes the airflow distribution parameter by adjusting flapper positions rather than changing fan speed. This allows the system to maintain adequate cooling for high-power line cards while reducing overall fan power consumption by creating optimized airflow paths that deliver cooling efficiency without requiring maximum fan operation.
3Speed
If airflow is allowed to follow the path of least resistance, then air flow efficiency increases, but uneven cooling distribution occurs across line cards with different resistances
Solution Approach 1:
The patent introduces asymmetry through adjustable flappers that create non-uniform airflow resistance across different line card slots. By positioning flappers at different angles, the system deliberately creates asymmetric airflow distribution that compensates for the natural path of least resistance tendency, ensuring each line card receives appropriate cooling regardless of its position or thermal characteristics.
Solution Approach 2:
The flapper acts as an intermediary element between the airflow source and the line cards. It mediates the airflow by selectively blocking or directing air to specific line card slots, preventing air from simply following the path of least resistance and instead directing it to where it is most needed based on each line card's cooling requirements.
4Ease of manufacture
If the chassis is designed with fixed airflow paths, then manufacturing is simplified, but adaptability to different line card configurations is reduced
Solution Approach 1:
The patent achieves universality by designing a chassis with standardized flapper mechanisms that can be applied to multiple line card slots. Each flapper serves multiple functions: it can be positioned to provide full cooling, partial cooling, or blocked cooling as needed. This multi-functional design allows the same basic chassis structure to adapt to various line card configurations and power dissipation patterns without requiring custom manufacturing for each scenario.
Solution Approach 2:
The patent transforms the fixed airflow path design into a dynamic system where flappers can be adjusted to different positions. This dynamic capability allows the chassis to adapt to different line card configurations, power dissipation levels, and thermal management requirements while maintaining a relatively simple and manufacturable base structure. The adjustability provides versatility without significantly complicating the overall chassis design.
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 approach enables efficient resource allocation by providing appropriate cooling to each line card, optimizing overall cooling performance, reducing fan power consumption, and minimizing airflow imbalances, thereby enhancing thermal management and reducing energy usage.
Implementation Method 1
A flapper associated with each line card slot may be adjusted to control an amount that the opening is covered such that a desired air flow rate is achieved
Implementation Method 2
A sensor arrangement may be arranged to monitor conditions within a chassis, e.g., temperature, pressure, power consumption, etc.
Implementation Method 3
a fan array, e.g., a tray of fans, that provides air flow to provide cooling to line cards within the chassis
Data Source
AI summary
According to one aspect, an apparatus includes a first component, a plurality of line card slots, a fan array, and a sensor arrangement. The first component has a first opening defined therein and a second opening defined therein. The first component includes a first configurable line card flapper is arranged to at least partially cover the first opening and a second configurable line card flapper is arranged to at least partially cover the second opening. The plurality of line card slots includes a first line card slot associated with the first opening and a second line card slot associated with the second opening. The fan array includes a plurality of fans. The sensor arrangement includes at least one sensor arranged to monitor at least one condition. The first and second configurable line card flappers are arranged to be configured using information obtained from the sensor arrangement.