Electrostatic Particle Collector Layout for Humid Insulation Control
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Solution Overview
Problem
Existing electrostatic precipitators face challenges in maintaining reliable electrical insulation between discharge and collecting electrodes, especially in humid environments, leading to potential short circuits and device degradation, and struggle to achieve compact, portable designs while ensuring effective particle collection and decontamination.
Innovation Solution
The use of a discharge electrode in the form of a wire, maintained by insulating means at both ends, with a transversal wall deflecting liquid flow to prevent capillary bridging and ensure durable electrical insulation, allowing for compact and orientable devices that can operate in humid conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the discharge electrode is maintained by insulating means at both ends to ensure reliable electrical insulation in humid environments, then the reliability of electrical insulation is improved, but the device complexity increases due to additional maintaining means and transversal walls
Solution Approach 1:
A transversal wall is introduced as an intermediary element between the liquid flow path and the insulating means. This wall deflects liquid flow away from the insulating means, preventing capillary bridging and maintaining electrical insulation reliability without requiring complex insulation systems
Solution Approach 2:
The discharge electrode is segmented into sections maintained by separate insulating means at different locations (including both ends and intermediate points). This segmentation allows each insulating point to be independently protected by transversal walls, improving overall insulation reliability while distributing the structural complexity across multiple simple elements
2Volume of moving object
If the device is designed to be compact and portable with reduced distancing between electrodes, then the device volume is reduced, but the reliability of electrical insulation deteriorates due to increased risk of short circuits
Solution Approach 1:
The insulation strategy moves from a one-dimensional approach (increasing axial distance between electrodes) to a multi-dimensional approach using transversal walls that deflect liquid flow in a perpendicular dimension. This allows compact electrode spacing while maintaining insulation reliability through spatial separation of liquid flow paths from insulating elements
Solution Approach 2:
Transversal walls serve as intermediary barriers that protect insulating means from liquid exposure. These walls create a physical separation between the liquid-containing environment and the electrical insulation, enabling compact device design without compromising insulation reliability
3Productivity
If liquid is injected into the gas to improve particle collection performance, then the particle collection efficiency is improved, but the risk of dielectric breakdown increases due to liquid contact with insulating means
Solution Approach 1:
Transversal walls act as intermediary elements that redirect liquid flow away from insulating means while allowing liquid injection to continue for particle collection enhancement. This spatial separation maintains the productivity benefits of liquid injection without exposing insulation to dielectric breakdown risks
Solution Approach 2:
The collecting chamber is segmented into zones with different functions: liquid injection zones for particle collection and dry zones protected by transversal walls for electrical insulation. This segmentation allows simultaneous operation of liquid injection for productivity improvement while protecting insulation reliability in separate protected zones
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 ensures reliable electrical insulation and prevents dielectric breakdown, enabling durable operation in humid environments without compromising device compactness or orientation flexibility, effectively collecting particles while reducing the risk of electrical arcs and device degradation.
Implementation Method 1
certain function by the application of an intense electric field to create a corona discharge effect: they are commonly called electrofilters or electrostatic precipitators
Implementation Method 2
prevent capillary bridging and ensure durable electrical insulation
Data Source
AI summary
An electrostatic collection device of particles in suspension in a gas including a collecting chamber with a collecting wall, part of which forms a collecting electrode. The collecting electrode faces a discharge electrode in the form of a wire, so as to create a corona discharge between the discharge electrode and the collecting electrode, the collecting wall extends to the periphery of the discharge electrode. The discharge electrode is maintained at a first end by a first holder and at the second end by a second holder, both holders made of electrically insulating material(s). At least one traversal wall protrudes from the collecting wall, and has a shape adapted to deflect the path of a liquid present in the gas and flowing on the collecting wall to the transversal wall such that it does not come into contact with the second holder.