Rotatable Fan Casing for Display Card Heat Dissipation

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Solution Overview

Problem

Current display card systems face inefficiencies in heat dissipation as the workload increases, with existing heat sinks struggling to effectively manage heat generated by graphic data processing, leading to reduced performance and potential damage from foreign objects.

Innovation Solution

A fan module with a casing design featuring a first and second cover, where the second cover is rotatably connected to the first cover, allowing for adjustment between closed and open states, enhancing airflow for improved heat dissipation while protecting the fan and users from damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If the heat dissipation device is exposed to improve heat dissipation performance, then the heat dissipation efficiency is improved, but the fan and users are exposed to harmful factors (foreign objects and injury risks)

Engineering Contradiction:
Improveheat dissipation performanceVSAvoidforeign object collision and user injury risk
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The casing is divided into a first cover and a second cover that can be independently positioned. The second cover can be rotated between a first position (covering the fan) and a second position (exposing the fan), allowing selective exposure of the heat dissipation device while maintaining protection when needed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The second cover is designed to be rotatable relative to the first cover, enabling dynamic adjustment between closed and open states. This dynamic structure allows the system to adapt between protection mode (second cover at first position) and heat dissipation mode (second cover at second position).

Inventive Principle:
Principle #15Dynamics

2Reliability

If the casing is kept closed to protect the fan and users, then safety is improved, but heat dissipation performance deteriorates

Engineering Contradiction:
Improvesafety protectionVSAvoidheat dissipation efficiency
Core Design Contradiction:
ReliabilityVSTemperature

Solution Approach 1:

The rotatable second cover enables the system to dynamically switch between closed (protective) and open (heat dissipation) states, resolving the contradiction between safety and heat dissipation performance.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The first cover remains fixed to provide continuous protection, while only the second cover is made adjustable. This localized differentiation allows protection in critical areas while enabling heat dissipation where needed.

Inventive Principle:
Principle #3Local quality

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 adjustable fan module design improves heat dissipation performance by allowing external airflow to cool the heat dissipation devices and expel hot air, while protecting the fan and users from collisions with foreign objects, thereby enhancing the operational efficiency and safety of the display card system.

Implementation Method 1

the airflow outside the casing smoothly flow into the casing to cool down the heat dissipation device, and then the hot air leaves through the air outlet

Methodology Applied
Scientific EffectAirflow: Convection

Data Source

PatentUS11409339B2Fan module and display card device having the same
Publication Date: 2022.08.09 ASUSTEK COMPUTER INC
  • US11409339B2 patent drawing
  • US11409339B2 patent drawing
  • US11409339B2 patent drawing

AI summary

A fan module is provided in this disclosure. The fan module comprises a fan and a casing. The casing accommodates the fan and includes a first cover and at least one second cover, the second cover is rotatably connected with the first cover at a first location or a second location. A portion of the fan exposed by the second cover at the first location is less than that at the second location.