Electrostatic Charging Electrode Layout for Thin Filter Assemblies
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Solution Overview
Problem
Existing electrostatic charging devices occupy excessive installation space due to their structural design, which limits their application in scenarios with limited thickness direction, and they often require complex ionized structures and high maintenance costs.
Innovation Solution
The electrostatic charging device incorporates a frame body with internal accommodating grooves housing electrode bodies and electrode heads, arranged at angles between 0 to 60 degrees to the frame plane, allowing for even distribution and reduced thickness, along with a novel discharging mode that ensures complete coverage without dead zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the discharging needle is set perpendicular to the micro-electrostatic filter body, then the electrostatic charging function is achieved, but the device occupies excessive space in the thickness direction
Solution Approach 1:
The patent changes the arrangement dimension of electrode heads from perpendicular (thickness direction) to inclined or parallel arrangement relative to the filter body. The electrode heads are arranged at an angle of 15-75 degrees relative to the normal direction of the filter body surface, transforming the spatial occupation from the thickness direction to the plane direction, thereby reducing the device's thickness while maintaining charging effectiveness.
Solution Approach 2:
The patent divides the single discharging needle structure into multiple electrode heads arranged in an array. These electrode heads are distributed across the filter body surface at specific intervals, segmenting the charging function across multiple points. This segmentation allows the electric field to be distributed more efficiently in the plane direction, reducing the need for excessive thickness to achieve adequate charging coverage.
2Device complexity
If the discharging needle is arranged perpendicular to the filter body, then the charging structure is simple, but the ionized structure becomes complicated and production cost increases
Solution Approach 1:
The patent merges the discharging needle function with the filter body structure by integrating electrode heads directly into the filter body framework. The electrode heads are arranged within the filter body's structural elements, combining the charging function with the existing structural components. This integration simplifies the overall structure and reduces production complexity compared to adding a separate perpendicular discharging needle assembly.
3Reliability
If the discharging needle tip has a sharp angle, then the electrostatic discharge effect is enhanced, but the risk of collision damage during production, installation, and maintenance increases
Solution Approach 1:
The patent applies different geometric characteristics to different parts of the electrode heads. The electrode heads have rounded or blunt tips instead of sharp angles, improving safety during handling and installation. However, the electrode heads are arranged at optimized angles (15-75 degrees relative to the normal direction) and positioned at specific intervals to maintain effective electrostatic discharge. This local optimization balances safety requirements with functional effectiveness.
4Length of stationary object
If the dust collecting device is thinned to accommodate the charging device, then the space constraint is satisfied, but the purification capacity is sacrificed
Solution Approach 1:
The patent resolves this contradiction by changing the spatial arrangement of electrode heads from the thickness direction to the plane direction. By arranging electrode heads at angles of 15-75 degrees relative to the normal direction and distributing them across the filter body surface, the device achieves effective electrostatic charging without requiring excessive thickness. This allows the dust collecting device to maintain its original thickness and purification capacity while accommodating the charging function.
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 design reduces installation space requirements, enhances charging uniformity, and improves efficiency while minimizing the risk of electrode damage during handling and installation, offering a wider range of application scenarios and lower maintenance needs.
Implementation Method 1
a plurality of electrode heads penetrating through a wall of the at least one first accommodating groove and connected with the electrode body; wherein the plurality of electrode heads are arranged along the electrode body at intervals, such that a discharging area covers a whole of an interior of the frame body
Data Source
AI summary
An electrostatic charging device and an assembly method thereof, the electrostatic charging device includes a frame body, at least one first accommodating groove arranged inside the frame body, an electrode body arranged inside the at least one first accommodating groove and arranged along a length direction of the at least one first accommodating groove, and a plurality of electrode heads penetrating through a wall of the at least one first accommodating groove and connected with the electrode body; the plurality of electrode heads are arranged along the electrode body at intervals, such that a discharging area covers a whole of an interior of the frame body; the electrode body and a connector configured to connect the plurality of electrode heads and the electrode body are both sealed in the at least one first accommodating groove.