Electrical appliance with electrostatic dust collecting device using carbon fiber
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Solution Overview
Problem
Conventional electrostatic dust collecting devices using corona discharge have high power consumption and generate excessive ozone, while devices using carbon fibers suffer from unstable electron emission and risk of electric shock.
Innovation Solution
An electrostatic dust collecting device using carbon fibers with a ground electrode and electron blocking plates to stabilize electron generation and prevent electric shock, featuring a charging device with carbon fiber electrodes, a printed circuit board, and a protection grille to manage electron flow and user safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If corona discharge is used for charging contaminants, then contaminants can be effectively charged and collected, but power consumption increases and excessive ozone is generated
Solution Approach 1:
The patent changes the charging mechanism from corona discharge to carbon fiber-based electron emission. This parameter change in the charging method eliminates ozone generation while maintaining effective contaminant charging through stable electron emission from carbon fiber electrodes
Solution Approach 2:
The patent replaces the corona discharge system with a carbon fiber electrode system that uses field emission or thermionic emission principles. This substitution eliminates the harmful ozone-generating corona discharge while achieving the same contaminant charging function through electron emission from carbon fiber tips
2Object-generated harmful factors
If carbon fiber electrodes are used to reduce ozone, then ozone generation is reduced, but electron emission becomes unstable and electric shock risk increases
Solution Approach 1:
The patent introduces a conductive adhesive as an intermediary between the carbon fiber electrode and the insulating substrate. This intermediary ensures stable electrical connection and consistent electron emission by providing a reliable conductive path while maintaining the carbon fiber's low ozone-generation特性
Solution Approach 2:
The patent applies conductive adhesive specifically at the contact points between carbon fiber electrodes and the substrate, creating localized conductive regions. This ensures stable electron emission at the electrode tips while maintaining the overall insulating properties of the substrate structure
3Power
If carbon fiber tips are exposed to generate electrons, then electron emission is achieved, but user safety is compromised due to electric shock risk
Solution Approach 1:
The patent uses an insulating substrate as a mediator that separates the carbon fiber electrodes from direct user contact. The substrate allows electron emission to occur at the carbon fiber tips while preventing users from touching the charged carbon fibers, thus eliminating electric shock risk
Solution Approach 2:
The patent embeds the carbon fiber electrodes within or upon the insulating substrate structure. This nesting arrangement protects the electrified carbon fiber tips by enclosing them within a safe, non-conductive housing that users cannot directly contact
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 provides stable electron generation, reduces ozone production, and prevents electric shock, enhancing the efficiency and safety of the dust collecting process while maintaining effective contaminant removal.
Implementation Method 1
a plurality of carbon fiber electrodes disposed toward the inlet and configured to generate electrons to charge surrounding contaminants
Implementation Method 2
The dust collecting device is disposed in an air passage through which the air sucked by the air moving device provided in the main body passes, and collects contaminants charged by the charging device from the air
Data Source
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AI summary
An electrical appliance having an electrostatic dust collecting device includes a main body including an inlet; a charging device disposed on the main body at an edge of the inlet and configured to charge contaminants in air; an air moving device disposed inside the main body and configured to suck air containing contaminants and exhaust the air to an outside; and a dust collecting device disposed in an air passage and configured to collect contaminants charged by the charging device from the air. The charging device includes a plurality of carbon fiber electrodes disposed toward the inlet and configured to generate electrons to charge contaminants; a printed circuit board on which the plurality of carbon fiber electrodes are disposed; and a ground electrode disposed adjacent to the printed circuit board without facing the plurality of carbon fiber electrodes.