Carbon Brush Ionic Wind Generator for Low-Ozone Electronics Cooling
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Solution Overview
Problem
Existing ionic wind generators face challenges with electrode durability, ozone generation, and cooling efficiency due to the use of wire or needle electrodes, which limits their effectiveness in miniaturized electronic devices with high heat dissipation needs.
Innovation Solution
The use of a carbon brush as the emitter electrode, configured with multiple carbon fibers, which enhances ionization and wind speed while reducing ozone generation, allowing for efficient cooling without a heat sink and enabling miniaturization of the generator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a wire-type electrode is used as the ionization electrode, then the structure is simple, but the electrode has a risk of breakage during use and reduced durability
Solution Approach 1:
The patent applies composite materials by using carbon fibers as the ionization electrode instead of traditional wire materials. The carbon fiber brush structure combines multiple carbon fibers together, creating a composite electrode that is more resistant to breakage while maintaining the necessary electrical properties for corona discharge. This resolves the contradiction by providing both structural simplicity and improved durability through material composition rather than single-material construction.
2Power
If a needle-type electrode is used as the ionization electrode, then the ionization effect is enhanced, but the electrode is prone to deterioration due to abrasion of the tip
Solution Approach 1:
The patent segments the ionization electrode into multiple individual carbon fibers rather than using a single needle. Each carbon fiber can function independently for ionization, and if one fiber deteriorates or breaks, the others continue to operate. This segmentation maintains the ionization effect while significantly improving durability, as the brush structure distributes mechanical stress across many fibers rather than concentrating it at a single needle tip.
Solution Approach 2:
The patent changes the physical parameters of the electrode from a single sharp needle to multiple carbon fibers with different orientations and lengths. This parameter change allows the electrode to maintain effective ionization surface area while being more resistant to mechanical wear. The carbon fiber brush can flex and adapt to mechanical stresses without the catastrophic failure mode of a rigid needle tip.
3Speed
If the distance between the ionization electrode and the counter electrode is narrowed to increase wind speed, then the ionic wind speed increases, but the amount of ozone generated increases adversely affecting the environment
Solution Approach 1:
The patent changes the electrode configuration parameter from traditional wire or needle to carbon fiber brush structure. This parameter change affects the corona discharge characteristics, allowing for more efficient ion generation that produces less ozone per unit of ionic wind generated. The carbon fiber structure provides a larger surface area with lower electric field concentration, reducing the conditions that lead to excessive ozone formation while maintaining effective wind speed.
4Device complexity
If conventional electrodes are used, then the generator structure is simple, but sufficient cooling function cannot be achieved without a heat sink in miniaturized devices
Solution Approach 1:
The carbon fiber brush electrode serves multiple functions simultaneously: it generates corona discharge for ionic wind production, provides structural durability, and enables compact generator design that achieves sufficient cooling performance without requiring separate heat sink components. This multi-functionality resolves the contradiction by making the electrode itself the primary cooling element rather than requiring additional heat dissipation structures.
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 carbon brush design improves durability, wind speed, and cooling performance, reduces ozone generation, and allows for easy adjustment of wind speed, extending the life of the ionic wind generator and maintaining environmental friendliness.
Implementation Method 1
The ionic wind is generated after ionizing air by applying a high voltage to an emitter electrode such as a probe or a thin wire to cause a corona discharge
Implementation Method 2
ionizing air by applying a high voltage to an emitter electrode
Implementation Method 3
When the ionic wind is moved by a strong electric field, the ambient air moves together with the ionic wind
Data Source
AI summary
An ionic wind generator and an electronic device having a heat dissipation function using the same are proposed. The ionic wind generator includes a power module; a first electrode configured to receive power from the power module by being connected to the power module to become an emitter electrode; and a second electrode spaced apart from the first electrode and grounded and at the same time connected to the power module to become a counter electrode. In addition, the first electrode is configured as a carbon brush including multiple carbon fibers. Accordingly, in the ionic wind generator, the emitter electrode is configured as the carbon brush having multiple carbon fibers.