Magnetic Drive Heat Dissipation Module Eliminates Fan Noise

Solution Overview

Problem

Conventional air-cooling heat dissipation modules, such as those using axial fans, suffer from noise pollution and reduced lifespan due to friction and shakes between the shaft and sleeve, leading to inefficient heat removal in computer systems.

Innovation Solution

A heat dissipation module comprising an electro-magnetic member, an elastic member, and a magnetic member that generates a periodic magnetic field to drive the blades of the elastic member to expand or close, producing an air current for heat dissipation, thereby avoiding the friction and noise issues of traditional axial fans.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If an axial fan is used for heat dissipation, then the cost is reduced, but noise is generated and lifespan is shortened due to friction and shakes between shaft and sleeve

Engineering Contradiction:

ImprovecostVSAvoidnoise

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the mechanical axial fan system with a magnetic drive system. The electro-magnetic member generates a periodic magnetic field that directly drives the magnetic member to oscillate the elastic member and blades, eliminating the mechanical shaft and sleeve components that cause friction, noise, and wear. This substitution maintains cost-effectiveness while eliminating the harmful mechanical interactions.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a magnetic field as an intermediary between the electro-magnetic member and the magnetic member. This magnetic field acts as a non-contact mediator that transmits energy to oscillate the elastic member and blades without requiring direct mechanical contact, thereby eliminating friction and noise while maintaining the heat dissipation function.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of manufacture

If an axial fan is used for heat dissipation, then the cost is reduced, but lifespan is reduced due to friction and shakes between shaft and sleeve

Engineering Contradiction:

ImprovecostVSAvoidlifespan

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent replaces the mechanical axial fan system with a magnetic drive system. The electro-magnetic member generates a periodic magnetic field that directly drives the magnetic member to oscillate the elastic member and blades, eliminating the mechanical shaft and sleeve components that cause friction, noise, and wear. This substitution maintains cost-effectiveness while eliminating the harmful mechanical interactions.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts and removes the problematic mechanical components (shaft and sleeve) from the system. By using a magnetic field to directly drive the magnetic member, the design eliminates the shaft and sleeve assemblies that are the source of friction and wear, thereby extending the lifespan of the heat dissipation module while maintaining affordability.

Inventive Principle:

Principle #2Taking out (Extraction)

3Productivity

If conventional axial fans are used, then heat dissipation is achieved, but friction and shakes between shaft and sleeve reduce efficiency

Engineering Contradiction:

Improveheat dissipation efficiencyVSAvoidenergy loss due to friction

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The patent replaces the mechanical axial fan system with a magnetic drive system. The electro-magnetic member generates a periodic magnetic field that directly drives the magnetic member to oscillate the elastic member and blades, eliminating the mechanical shaft and sleeve components that cause friction, noise, and wear. This substitution maintains cost-effectiveness while eliminating the harmful mechanical interactions.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent converts the harmful friction and shakes of the mechanical system into beneficial oscillatory motion. The periodic magnetic field drives the magnetic member to oscillate the elastic member and blades in a controlled manner, transforming the energy that would be lost to friction into useful kinetic energy for generating air current, thereby improving heat dissipation efficiency.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 solution effectively generates an air current for heat dissipation without the noise and lifespan limitations of conventional axial-fan-type modules, providing a more reliable and quiet cooling mechanism.

Implementation Method 1

The electro-magnetic member is configured for generating a periodic magnetic field

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

The magnetic member is disposed on the free end and configured for reciprocating due to being magnetically induced by the periodic magnetic field

Methodology Applied

Scientific EffectMagnetic induction: Magnetic Field

Implementation Method 3

The elastic member includes a fixed end, a free end and a plurality of blades for expanding or closing

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS9482219B2Heat dissipation module

Publication Date: 2016.11.01 INVENTEC PUDONG TECH CORPOARTION

AI summary

A heat dissipation module includes an electro-magnetic member, an elastic member and a magnetic member. The electro-magnetic member is configured for generating a periodic magnetic field. The elastic member includes a fixed end, a free end and multiple blades for expanding or closing; and the blades are located between the fixed end and the free end. The magnetic member is disposed on the free end and configured for reciprocating due to being magnetically induced by the periodic magnetic field so as to drive the plurality of blades to produce an air current.