Electrode Plate with Semiconductor Layer for Back Corona Suppression
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Solution Overview
Problem
Existing air purification technologies face challenges with the back corona phenomenon caused by dust thin layers on dust collection surfaces, which reduces purification efficiency and requires frequent maintenance.
Innovation Solution
The proposed solution involves an electrode plate with a conductive layer inside a semiconductor layer, an insulation layer in the middle, and specific design features such as avoiding ports and a power connection end with a necked receiving port, which improves electrical safety and charge transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conductive materials are wrapped by insulating materials to form dust collection plates, then the distance between dust collection plates can be set very close and surface area can be made very large, but a dust thin layer forms on the dust collection surface which generates back corona phenomenon and reduces purification efficiency
Solution Approach 1:
The dust collection plate is segmented into multiple functional layers: an insulating material layer, a semiconductor layer, and a conductive layer. This segmentation allows each layer to perform its specific function - the insulating layer prevents direct contact between conductive materials, the semiconductor layer controls charge transfer, and the conductive layer collects charges from particulate matters, thereby solving the back corona problem while maintaining large surface area
Solution Approach 2:
The dust collection plate uses a composite structure combining insulating materials, semiconductor materials, and conductive materials in a layered configuration. This composite material approach enables the plate to simultaneously achieve electrical insulation, controlled charge transfer, and efficient charge collection, preventing back corona while maximizing dust collection surface area
2Productivity
If dust collection plates are used in purification devices, then wide flow rate and complete particle pollution can be purified, but the dust thin layer on the collection surface repels further particulate matter capture and affects purification efficiency
Solution Approach 1:
The semiconductor layer acts as an intermediary between the conductive layer and the dust collection surface. It controls the transfer of charges from the conductive layer to the dust particles, preventing excessive charge accumulation that would cause back corona, while still enabling effective particle capture through controlled charge transfer
Solution Approach 2:
The invention changes the electrical parameters of the dust collection plate by introducing a semiconductor layer with controlled conductivity. This allows dynamic control of charge transfer characteristics, enabling the plate to maintain optimal electrical properties for particle capture while preventing the charge accumulation that leads to back corona phenomenon
3Reliability
If filter materials are used for air purification, then pollutants can be filtered or adsorbed, but wind resistance increases due to continuous interception of pollutants and frequent cleaning and replacement are required
Solution Approach 1:
The invention replaces the mechanical filtration system with an electrostatic field-based dust collection system. Instead of relying on physical fiber interception that clogs over time, the system uses electric fields to attract and collect charged particles on the dust collection plates, which can be easily removed without disassembling the device, thereby eliminating frequent maintenance requirements
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 the stability and purification efficiency of the air purification device, reduces the occurrence of back corona, increases dust holding capacity, and extends the maintenance cycle.
Implementation Method 1
The electrostatic technology charges particulate matters in gas through ionization modules
Implementation Method 2
the charged particulate matters are adsorbed by the electric field formed by a dust collection module
Implementation Method 3
The dust thin layer generates a back corona phenomenon, which forms a charge accumulation on the surface of the dust thin layer
Data Source
AI summary
The present invention relates to an electrode plate, and a purification and dust removal device, and belongs to the technical field of air purification. The electrode plate includes a body, the body includes a conductive layer located inside a semiconductor layer, an edge of the body is provided with a plurality of fixed mounting positions and a plurality of avoiding ports in a length direction thereof, the body further includes an insulation layer, the semiconductor layer is arranged on two sides of the insulation layer, and the conductive layer is located inside the semiconductor layer. According to the present invention, the technical problem in the prior art that a dust thin layer formed on a dust collection surface generates a back corona phenomenon, thereby repelling the capture of particulate matters and affecting the purification efficiency of the purification and dust removal device can be solved.