Dust collection unit for electric precipitator and electric precipitator including same
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Solution Overview
Problem
Conventional electric precipitators face issues with dust collection performance due to interference from the electric field generated by high voltage, which affects the discharge of charging units and leads to premature clogging and reduced lifespan, especially with small-sized impurity particles.
Innovation Solution
A dust collection unit for electric precipitators featuring dust collection films with alternate electrodes and a ground electrode that shields the electric field, ensuring consistent spacing and preventing charge accumulation on low-voltage side films, thereby improving dust collection performance and extending the filter's lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high voltage is applied to dust collection films to improve dust collection performance, then dust collection efficiency is improved, but the electric field interferes with charging unit discharge and degrades performance
Solution Approach 1:
A ground electrode is introduced as an intermediary component between the high voltage electrode and the charging unit. This ground electrode acts as a mediator that shields the electric field generated by the high voltage, preventing it from interfering with the charging unit's discharge function while allowing the high voltage to continue collecting dust effectively.
2Productivity
If dust collection films are used to filter fine dust particles, then filtration capability is improved, but charged dust particles accumulate on low-voltage side films and reduce potential difference
Solution Approach 1:
The ground electrode serves as a mediator that provides a discharge path for accumulated charges on the low-voltage side dust collection films. By introducing this intermediate grounded structure, the potential difference between high and low voltage films is maintained, preventing performance degradation while continuing to collect fine dust particles.
3Manufacturing precision
If pore size is decreased to filter smaller dust particles, then filtration precision is improved, but air volume decreases and pores clog prematurely
Solution Approach 1:
The patent replaces the mechanical filtration approach (relying solely on physical pore size) with an electrostatic field-based filtration mechanism. By applying high voltage to create strong electric fields, the system can capture and hold dust particles of various sizes without requiring extremely small pores, thus maintaining high air flow while achieving precise filtration.
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 suppresses the electric field, facilitates the discharge of charging units, and shields electromagnetic waves, enhancing the dust collection performance of electric precipitators while maintaining efficiency over time.
Implementation Method 1
a ground electrode stored inside the fixing member... the ground electrode may be formed to extend in a direction in which the plurality of dust collection films are arranged and coupled to the fixing member to shield an electric field generated by applying a voltage to the plurality of dust collection films
Implementation Method 2
formed to remove fine particles from the air or gas passing between the dust collection films by adsorbing dust particles charged to have opposite polarities on surfaces of the dust collection films with a positive polarity or a negative polarity
Data Source
AI summary
A dust collection unit for an electric precipitator and the electric precipitator including same, comprising: a plurality of dust collection films arranged apart from each other and including different, alternately arranged electrodes; a fixing member which is coupled to the plurality of dust collection films at one side or both sides where the plurality of collection films are arranged, so as to fix the plurality of dust collection films to be spaced apart from each other at specific intervals, and a ground electrode accommodated inside the fixing member. Accordingly, the dust collection performance of the electric precipitator may be improved by facilitating the discharge of a charging unit by suppressing an electric field generated by applying a high voltage to the plurality of dust collection films.