Electrostatic Collector Discharge Electrode with Sudden Widening
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Solution Overview
Problem
Existing electrostatic collectors face challenges in optimizing the electric discharge between the discharge electrode and the collection electrode to maximize collection efficiency, leading to inhomogeneous particle accumulation and reduced efficiency.
Innovation Solution
The electrostatic collector features a discharge electrode with a sudden widening, biased to a lower potential, and a collection electrode biased to a higher potential, facilitating axisymmetric particle deposition and reducing the risk of electric arcs, along with a design that allows for easy removal and cleaning of the collection electrode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a discharge electrode of constant diameter is used, then the structure is simple, but the particle deposition is inhomogeneous and collection efficiency decreases
Solution Approach 1:
The discharge electrode incorporates a sudden widening section that creates different geometric zones along its length. The narrow section generates stronger electric field intensity for effective ionization, while the widened section promotes more uniform particle deposition distribution. This local variation in geometry optimizes different functional requirements at different positions of the same electrode.
2Power
If the discharge electrode and collection electrode are positioned close to each other, then the electric field intensity is high for effective ionization, but the risk of electric arcs increases
Solution Approach 1:
The discharge electrode features a sudden widening that creates distinct electric field zones. The narrow section maintains high field intensity for effective corona discharge and particle ionization, while the widened section acts as a geometric barrier that prevents direct arc formation between electrodes, thus locally addressing different electrical requirements.
3Stability of the object's composition
If the collection electrode is fixed in position, then the structure is stable, but the ease of removal for cleaning and analysis is reduced
Solution Approach 1:
The collection electrode is designed with movable positioning capability, allowing it to be shifted between operational positions (where it maintains stable alignment with the discharge electrode) and removal positions (where it can be extracted for cleaning or analysis). This dynamic positioning resolves the contradiction between operational stability and maintenance accessibility.
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 enhances collection efficiency by ensuring uniform particle distribution and reducing variations in corona discharges, resulting in improved performance and ease of maintenance.
Implementation Method 1
A high electric field is induced between the two electrodes under the effect of a potential difference applied between the two electrodes. The electric field ionizes the volume of gas located between the two electrodes, creating a sheath or crown of ionized gas located around the discharge electrode. This phenomenon is called corona discharge.
Implementation Method 2
The gas containing the particles to be separated which is passed between the discharge electrode and the collection electrode then passes through a flow of ions and the particles to be separated are in turn ionized. Under the effect of electrostatic forces, the charged particles thus created are attracted by the collection electrode on which they are collected.
Data Source
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AI summary
Electrostatic collector comprising a collection chamber delimited by a tubular wall oriented along a first axis; a discharge electrode, of elongate form, extending along said first axis; a collection electrode intended to be disposed inside the collection chamber against the wall, characterized in that the discharge electrode (10) comprises an end (10-1), in the shape of a tip, said end being disposed opposite the collection electrode; a first part, slender (10a) of a first diameter, emerging on said tip-shaped end, a second part (10b) of a second diameter, the second diameter being greater than or equal to twice the first diameter, the second diameter being preferably between 2 and 6 times the first diameter; and a sudden widening (11), extending between the first part (10a) and the second part (10b).