Electric Precipitator High Voltage Electrode Electron Guidance
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Solution Overview
Problem
Existing electric precipitators face challenges in maintaining a compact configuration while ensuring effective dust collection, as reducing the width of the charge unit leads to current leakage through low voltage electrodes, reducing dust collection efficiency.
Innovation Solution
The electric precipitator design includes high voltage electrodes with front ends protruding towards the charge unit and an insulating member between high voltage electrodes and the discharge wire, which guides electrons to the charge electrodes and prevents current leakage by minimizing the electric field between the discharge wire and low voltage electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the width of the charge unit is reduced to achieve a compact configuration, then the device size is reduced, but current leakage increases and dust collection efficiency decreases
Solution Approach 1:
The patent introduces high voltage electrodes as intermediary elements positioned between the discharge wire and low voltage electrodes. These high voltage electrodes create an enhanced electric field that actively guides electrons toward charge electrodes, preventing current leakage through low voltage electrodes even when the charge unit width is reduced. This intermediary structure enables compact design while maintaining dust collection efficiency.
Solution Approach 2:
The patent applies local quality by creating a non-uniform electric field distribution through strategically positioned high voltage electrodes. The electric field strength is locally enhanced in specific regions (between discharge wire and high voltage electrodes, and between high voltage electrodes and charge electrodes) to optimize electron guidance, while other regions maintain appropriate field strengths to prevent leakage. This localized field optimization allows compact configuration without sacrificing performance.
2Length of stationary object
If the charge unit width is reduced for compactness, then the device becomes more compact, but current leakage through low voltage electrodes increases
Solution Approach 1:
High voltage electrodes serve as intermediary elements that intercept and redirect electron flow before it can leak through low voltage electrodes. By positioning these electrodes between the discharge wire and low voltage electrodes, the system creates additional electric field pathways that guide electrons toward charge electrodes, effectively blocking leakage currents even in compact configurations.
Solution Approach 2:
The patent changes the electric field parameter distribution by introducing high voltage electrodes with specific voltage levels between the discharge wire and low voltage electrodes. This parameter modification creates a gradient that favors electron movement toward charge electrodes rather than leaking through low voltage electrodes, thereby reducing energy loss while maintaining compact dimensions.
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
This configuration effectively reduces current leakage to 5% or less, maintaining dust collection efficiency even with a narrower charge unit width, thereby achieving a more compact and efficient dust collection system.
Implementation Method 1
a discharge wire disposed between two neighboring charge electrodes and separated from the charge electrodes
Implementation Method 2
a dust collection unit disposed at a downstream part in the air flow direction to collect the charged contaminants through electric attraction
Data Source
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AI summary
An electric precipitator (10) includes a charge unit (10A) disposed at an upstream part and a dust collection unit (10B) disposed at a downstream part, the charge unit (10A) includes charge electrodes (11) and a discharge wire (14) disposed between two neighboring charge electrodes (11) and separated from the charge electrodes (11), the dust collection unit (10B) includes high voltage electrodes (12), front ends of which are opposite to the charge unit (10A), and low voltage electrodes (13), front ends of which are opposite to the charge unit (10A) and which alternate with high voltage electrodes (12), and the front ends of high voltage electrodes (12) protrude toward the charge unit (10A) as compared to the front ends of low voltage electrodes (13), thereby guiding electrons to the discharge electrodes (14) due to an electric field formed between the front ends of the high voltage electrodes (12) and the discharge electrodes (14) and thus reducing current leakage through the low voltage electrodes (13).