Electrostatic precipitator and control method thereof
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Solution Overview
Problem
Conventional electrostatic precipitators require separate charging and dust collecting units, leading to increased thickness and complexity, and lack a structure to diffuse ions, which affects aerosol collection efficiency.
Innovation Solution
An electrostatic precipitator with a dust collecting sheet that emits ions and collects aerosols, featuring a plate-shaped structure with a potential stabilizer and conductive member to diffuse ions and stabilize electric potential, reducing component count and enhancing collection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate charging unit and dust collecting unit are provided, then aerosol charging and collection functions are achieved, but device thickness and complexity increase
Solution Approach 1:
The patent combines the charging unit and dust collecting unit into a single integrated electrostatic precipitator module. The charging electrodes and collecting electrodes are arranged in alternating layers within the same housing, eliminating the need for separate units and reducing overall device thickness while maintaining both charging and collection functions.
Solution Approach 2:
The electrostatic precipitator is designed to perform multiple functions within a single device structure. The same electrode assembly serves both for charging aerosols (through corona discharge) and for collecting charged particles (through electrostatic attraction), making the device multi-functional and reducing component count.
2Reliability
If ions are generated by the charging unit, then aerosol charging is achieved, but ion accumulation causes sparks and reduces efficiency
Solution Approach 1:
The patent implements periodic reversal of electrode polarity to prevent ion accumulation. By alternating the charging polarity between positive and negative over time periods, ions that would otherwise accumulate and cause sparks are periodically cleared, maintaining stable operation and preventing harmful discharges.
Solution Approach 2:
The electrostatic precipitator employs dynamic polarity reversal where the charging electrodes switch between positive and negative potentials in a controlled manner. This dynamic adjustment prevents static ion buildup that leads to sparks, while still achieving effective aerosol charging during each polarity phase.
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 allows for a slim, efficient aerosol collection system with improved dust collection efficiency by diffusing ions and stabilizing electric potential, reducing the accumulation of ions on the structure and preventing sparks.
Implementation Method 1
a charging unit configured to positively (+) or negatively (−) charge aerosols contained in the air, through the electric discharge
Implementation Method 2
a structure provided to diffuse the ions
Implementation Method 3
a dust collecting unit configured to collect the aerosol charged by the charging unit
Data Source
AI summary
An electrostatic precipitator includes a dust collecting sheet configured to emit ions and configured to collect an aerosol charged by the ions, a power supplier electrically connected to the dust collecting sheet, a plate-shaped structure arranged upstream of an air flow path rather than the dust collecting sheet, and including at least one of a filter mesh or a grille including a plurality of openings, a potential stabilizer arranged between the plate-shaped structure and a ground, and configured to stabilize a potential of the plate-shaped structure, and a controller configured to control the power supplier to supply power to the dust collecting sheet.