Storage Chassis Cooling Fan Arrangement for Heat Dissipation

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Solution Overview

Problem

High-density storage apparatuses with high-performance circuit components generate excessive heat, requiring more efficient cooling solutions than existing configurations, and previous cooling methods like regulating gratings are inadequate for effective heat dissipation.

Innovation Solution

The storage apparatus incorporates a chassis design with cooling fan units arranged side by side across the width, forming a pressure adjustment area to evenly distribute cooling air and enhance heat dissipation around densely packed, heat-generating circuit components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If high-density packaging of circuit components is implemented to increase data storage capacity and processing performance, then storage capacity and processing speed are improved, but heat generation increases significantly

Engineering Contradiction:
Improvedata storage capacity and processing performanceVSAvoidheat generation
Core Design Contradiction:
ProductivityVSTemperature

Solution Approach 1:

The cooling system is segmented into multiple cooling fan units arranged side by side, each responsible for cooling specific circuit components. This segmentation allows distributed heat dissipation across different zones, preventing heat concentration in any single area while maintaining high-density component packaging.

Inventive Principle:
Principle #1Segmentation

2Device complexity

If conventional cooling configurations are used in high-density storage apparatus, then device simplicity is maintained, but cooling efficiency becomes insufficient

Engineering Contradiction:
Improvecooling system simplicityVSAvoidcooling efficiency
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

Different cooling fan units are positioned to face specific circuit components based on their heat generation characteristics. The cooling system provides localized cooling quality matched to the thermal profile of each component region, ensuring high cooling efficiency where needed while maintaining overall system simplicity.

Inventive Principle:
Principle #3Local quality

3Reliability

If cooling fans are arranged to face circuit components directly, then cooling effectiveness is improved, but uniform pressure distribution of cooling air is difficult to achieve

Engineering Contradiction:
Improvecooling effectivenessVSAvoidpressure distribution uniformity
Core Design Contradiction:
ReliabilityVSStress or pressure

Solution Approach 1:

The cooling fan units are arranged asymmetrically with respect to the circuit components, with fans positioned at different locations and orientations. This asymmetric arrangement, combined with the pressure adjustment area, creates balanced pressure distribution across the cooling zones while maintaining effective cooling of each component.

Inventive Principle:
Principle #4Asymmetry

4Volume of moving object

If the storage apparatus is downsized to meet market demands, then device compactness is improved, but cooling efficiency of densely packed components deteriorates

Engineering Contradiction:
Improvestorage apparatus sizeVSAvoidcooling efficiency
Core Design Contradiction:
Volume of moving objectVSTemperature

Solution Approach 1:

The cooling fan units are arranged in a planar configuration side by side across the width of the storage apparatus, utilizing horizontal space efficiently. This dimensional arrangement allows multiple cooling sources to operate in parallel within a compact footprint, providing adequate cooling for high-density components without increasing the overall device volume.

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

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 ensures uniform cooling and efficient heat dissipation for high-density circuit components, maintaining performance while reducing the risk of overheating in high-density storage systems.

Implementation Method 1

a plurality of cooling fan units that generate cooling air for cooling a circuit component mounted on the circuit board of the circuit package

Methodology Applied
Scientific EffectForced Convection: Forced Convection

Implementation Method 2

a pressure adjustment area extending in the width direction of the chassis is formed between the at least some of the plurality of circuit packages and the plurality of cooling fan units that face each other

Methodology Applied
Scientific EffectPressure Gradient: Pressure Gradient

Data Source

PatentUS9036342B2Storage apparatus and storage controller of storage apparatus
Publication Date: 2015.05.19 HITACHI VANTARA LTD
  • US9036342B2 patent drawing
  • US9036342B2 patent drawing
  • US9036342B2 patent drawing

AI summary

Storage apparatus configured to provide an external apparatus with logical storage area as data storage area, the storage apparatus having a physical storage medium configured to generate the logical storage area, and storage controller communicatively coupled to physical storage medium to control data input/output processing between the external apparatus and the logical storage area, wherein the storage controller includes circuit package including circuit board which implements predetermined function of storage controller and a circuit board case to accommodate the circuit board, plurality of cooling fan units that generate cooling air for cooling circuit component mounted on the circuit board of the circuit package, and a chassis having a structure for accommodating the circuit package and the cooling fan units, some of circuit packages are inserted to be accommodated in chassis from opening thereof and are arranged side by side across width direction of chassis.