Modular Fan Assembly with Airflow Diverter for Hot-Swapping

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Solution Overview

Problem

Conventional mass storage systems face challenges in hot-swapping and replacing fans without powering down the storage enclosure, due to accessibility issues and the weight and complexity of the enclosures, which can lead to inefficiencies and risks during service operations.

Innovation Solution

A modular fan assembly with a rigid open frame and opposing fans, featuring an airflow diverter to direct cooling airflow outside the frame, allowing for sliding installation and easy removal/replacement, and a sealing door to maintain enclosure pressure, enabling hot-swapping without shutting down active elements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional mass storage systems are used, then the storage enclosure can house multiple storage devices, but the fans cannot be hot-swapped without powering down the entire enclosure due to accessibility issues and weight/complexity

Engineering Contradiction:
ImproveFan replacement accessibilityVSAvoidEnclosure structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The fan assembly is segmented from the main storage enclosure, creating a separate modular unit that can be independently accessed and replaced. The fan assembly includes its own frame, fans, and mounting structure, allowing it to be removed and installed without powering down the entire enclosure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The fan assembly is extracted as a separate removable component from the storage enclosure. The frame includes external mounting features that engage with the enclosure, allowing the fan assembly to be taken out and replaced independently while the storage devices remain powered on.

Inventive Principle:
Principle #2Taking out (Extraction)

2Ease of operation

If the fan assembly is made modular and removable, then hot-swapping becomes possible, but the enclosure pressure and sealing may be compromised

Engineering Contradiction:
ImproveHot-swap capabilityVSAvoidEnclosure sealing integrity
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The frame includes pre-configured sealing features such as gaskets or seals that are already in place before the fan assembly is installed. These sealing elements are positioned to automatically engage with the enclosure opening, ensuring proper sealing is established before the assembly is fully secured.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

A sealing interface acts as an intermediary between the removable fan assembly frame and the storage enclosure. This interface includes sealing elements that maintain the enclosure's pressure and environmental integrity while allowing the fan assembly to be removed and replaced.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Temperature

If multiple fans are used to cool different areas, then cooling coverage is improved, but the complexity and number of components increase

Engineering Contradiction:
ImproveCooling coverageVSAvoidNumber of fan components
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The cooling system is segmented into multiple fan units within a single assembly, with each fan targeting a specific cooling zone. The frame includes separate mounting locations and airflow paths for each fan, allowing independent optimization of each cooling zone while maintaining a unified replaceable assembly.

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

The modular fan assembly enhances cooling efficiency, allows for quick and efficient replacement of fans, and maintains operational stability of the storage enclosure by enabling hot-swapping, reducing downtime and risk of component damage.

Implementation Method 1

The first and second fans are configured to establish a fluidic airflow through the frame

Methodology Applied
Scientific EffectFluidic airflow: Convection

Implementation Method 2

An airflow diverter positioned in an intermediate portion of the frame between the first and second ends divert at least a portion of the fluidic airflow through a first aperture of the frame to cool an active element outside the frame

Methodology Applied
Scientific EffectConvection cooling: Convection

Data Source

PatentUS10462933B2Modular fan assembly
Publication Date: 2019.10.29 SEAGATE TECH LLC
  • US10462933B2 patent drawing
  • US10462933B2 patent drawing
  • US10462933B2 patent drawing

AI summary

A modular fan assembly for use in a multi-device storage enclosure. In some embodiments, the fan assembly has a rigid open frame with opposing first and second ends. A first fan is connected to the first end and a second fan is connected to the second end. The first and second fans are configured to establish a fluidic airflow through the frame. An airflow diverter positioned in an intermediate portion of the frame between the first and second ends divert at least a portion of the fluidic airflow through a first aperture of the frame to cool an active element outside the frame.