Dual Network Card Thermal Management via Air Gap Design

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Solution Overview

Problem

Datacenter networking systems face signal degradation and component failure due to heat generation from components like transceivers, chipsets, and cables, and traditional cooling methods are inefficient, leading to increased costs and reduced performance.

Innovation Solution

The networking card arrangement includes a primary network card and an auxiliary network card positioned to allow air passage between them, with the auxiliary card supporting power management circuitry to dynamically redistribute power and increase thermal performance by enhancing heat dissipation through convective cooling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If networking components are placed in close proximity to maximize space utilization, then device density increases, but heat dissipation deteriorates leading to signal degradation and component failure

Engineering Contradiction:
Improvedevice densityVSAvoidheat dissipation
Core Design Contradiction:
Volume of moving objectVSTemperature

Solution Approach 1:

The patent positions the auxiliary network card perpendicular to the primary network card relative to the server board, creating a three-dimensional spatial arrangement. This dimensional change allows air to flow between the cards while maintaining high device density, effectively separating heat sources without sacrificing space utilization.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Temperature

If traditional cooling methods are used to manage heat, then temperature control is attempted, but system efficiency decreases and costs increase

Engineering Contradiction:
Improvetemperature controlVSAvoidsystem efficiency
Core Design Contradiction:
TemperatureVSProductivity

Solution Approach 1:

The patent enables passive self-cooling by designing the card arrangement to allow natural air convection between components. The auxiliary card's positioning creates an air passage that facilitates automatic heat dissipation without requiring active cooling systems, thereby maintaining temperature control while preserving system efficiency.

Inventive Principle:
Principle #25Self-service

3Volume of moving object

If air flow paths are blocked by closely positioned cards, then compact arrangement is achieved, but convective cooling deteriorates

Engineering Contradiction:
Improvearrangement compactnessVSAvoidconvective cooling
Core Design Contradiction:
Volume of moving objectVSLoss of energy

Solution Approach 1:

The patent segments the networking functions across two separate cards (primary and auxiliary) positioned perpendicular to each other. This segmentation creates distinct air flow paths between the cards, allowing convective cooling to occur while maintaining a compact overall arrangement within the server chassis.

Inventive Principle:
Principle #1Segmentation

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 improves thermal performance by increasing heat dissipation and preventing air preheating, thereby reducing the risk of component failure and maintaining system efficiency while adhering to industry standards for power and spacing.

Implementation Method 1

air may pass therebetween... enhancing heat dissipation through convective cooling

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentUS11140780B2Networking cards with increased performance
Publication Date: 2021.10.05 MELLANOX TECHNOLOGIES LTD(IL)
  • US11140780B2 patent drawing
  • US11140780B2 patent drawing
  • US11140780B2 patent drawing

AI summary

Apparatuses, systems, and associated methods of manufacturing are described that provide a networking card arrangement with increased thermal performance. An example arrangement includes a primary network card that defines a first card-to-board connection and a networking chipset supported by the primary network card. The arrangement also includes an auxiliary network card that defines a second card-to-board connection and networking cable connectors supported by the auxiliary network card that receive networking cables therein. The arrangement further includes a card connection element that operably connects the primary network card and the auxiliary network card. In an operational configuration in which the primary network card and the auxiliary network card are received by a server board via the first card-to-board connection and the second card-to-board connection, the primary network card is spaced from the auxiliary network card such that air may pass therebetween.