Vibrating Conductive Blade Fan for Corona Wind Heat Dissipation

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Solution Overview

Problem

Existing fan devices fail to effectively generate corona wind while enhancing heat dissipation through airflow generation.

Innovation Solution

A fan device comprising a high voltage power source, a conductive blade, a first electrode, and a resistance device, where the conductive blade vibrates to generate airflow and corona wind, with the resistance device controlling the flow rate of electric charge to adjust vibration amplitude and enhance heat dissipation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If a fan device uses traditional mechanical rotation to generate airflow, then it can achieve heat dissipation, but it cannot generate corona wind and the energy efficiency is limited

Engineering Contradiction:
Improveenergy efficiencyVSAvoidheat dissipation capability
Core Design Contradiction:
Loss of energyVSProductivity

Solution Approach 1:

The patent combines corona discharge mechanism and mechanical vibration mechanism into a single integrated fan device. The conductive blade serves dual functions: generating corona wind through electrostatic attraction/repulsion with electrodes, and producing mechanical vibration to enhance airflow. This merging allows the device to achieve both corona wind generation and effective heat dissipation simultaneously, resolving the contradiction between energy efficiency and heat dissipation capability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The conductive blade is designed to perform multiple functions: it acts as an electrode for corona discharge, a vibration element for mechanical agitation, and an airflow generator. By making the blade universal in its functionality, the device achieves corona wind generation, vibration-induced airflow, and heat dissipation all through a single component, thereby improving energy efficiency without sacrificing productivity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Productivity

If the conductive blade vibrates with large amplitude to enhance airflow and heat dissipation, then heat transfer efficiency improves, but the control precision and stability deteriorate

Engineering Contradiction:
Improveheat transfer efficiencyVSAvoidcontrol stability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent employs dynamic control of the conductive blade's vibration characteristics. By adjusting the voltage applied to the blade and the positioning of electrodes, the system can dynamically modify the vibration amplitude and frequency. This allows the blade to operate with large amplitudes when high heat transfer efficiency is needed, while maintaining stability through controlled electrostatic forces, thus resolving the contradiction between productivity and reliability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes key parameters such as voltage magnitude, electrode distance, and blade material properties to optimize performance. By varying these parameters, the conductive blade can achieve controlled vibration at different amplitudes, enabling high heat transfer efficiency while maintaining system stability through precise parameter adjustment.

Inventive Principle:
Principle #35Parameter changes

3Power

If the fan device operates at high voltage to generate strong corona wind, then corona effect is enhanced, but the energy consumption and safety risks increase

Engineering Contradiction:
Improvecorona wind strengthVSAvoidenergy consumption
Core Design Contradiction:
PowerVSUse of energy by moving object

Solution Approach 1:

The patent utilizes periodic vibration of the conductive blade rather than continuous high-voltage operation. The blade oscillates between charged and neutral states, creating periodic corona discharge effects. This periodic action generates sufficient corona wind strength while reducing average energy consumption compared to sustained high-voltage operation, as the system leverages the cumulative effect of repeated charge-discharge cycles.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system uses mechanical vibration of the conductive blade to enhance corona discharge efficiency. The vibration increases the frequency of charge accumulation and discharge events, amplifying the corona effect without requiring proportionally higher voltage levels. This mechanical assistance to the electrical process reduces energy consumption while maintaining or enhancing corona wind strength.

Inventive Principle:
Principle #18Mechanical vibration

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 device efficiently generates corona wind and airflow, providing improved heat dissipation efficiency, especially at relatively low voltages, by utilizing the vibration of the conductive blade and adjustable resistance to control airflow and heat transfer.

Implementation Method 1

The high voltage power source causes positive or negative corona around the conductive blade

Methodology Applied
Scientific EffectCorona discharge: Corona Discharge

Implementation Method 2

When the high voltage power source provides the second electric charge to the first electrode via the resistance device, the vibration side of the conductive blade is being attracted by the first electrode until they touched

Methodology Applied
Scientific EffectElectrostatic attraction: Electrostatics

Data Source

PatentUS11293459B2Fan device
Publication Date: 2022.04.05 NAT CHIAO TUNG UNIV
  • US11293459B2 patent drawing
  • US11293459B2 patent drawing
  • US11293459B2 patent drawing

AI summary

A fan device including high voltage power source, conductive blade, first electrode and a resistance device is provided. Connecting side of the conductive blade is connected to first electric contact of the high voltage power source, and the conductive blade further includes a vibration side, wherein the conductive blade is extended from the connecting side to the vibration side along a first direction. The first electrode electrically connected to the second electric contact of the high voltage power source. The first electrode is disposed on a side of the vibration side of the conductive blade, and located in the vibrating range of the vibration side. The resistance device is connected between the conductive blade and the second electric contact in series.