Electrode Debris Removal Airflow Layout Against Coanda Loss
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Solution Overview
Problem
Conventional foreign matter removal devices suffer from low efficiency due to the Coanda effect, which causes air to concentrate on the lower surface of the extension unit rather than the electrode, leading to reduced foreign matter removal and increased air consumption and noise.
Innovation Solution
A foreign matter removal device with a blowing unit that blows air at a 45-degree angle and a suction unit positioned to collect air efficiently, utilizing a recessed adjustment unit to concentrate airflow on the electrode surface, optimizing the protrusion and extension unit design to enhance airflow direction and minimize the Coanda effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air flow rate is increased to improve foreign matter removal efficiency, then foreign matter removal efficiency is improved, but air consumption increases and noise is generated
Solution Approach 1:
The blowing unit is designed to blow air locally and directly onto the electrode surface where foreign matters are located, rather than blowing air generally. This localized approach concentrates the air flow effect where it is most needed, improving foreign matter removal efficiency without requiring high overall air flow rates, thus reducing air consumption and noise
Solution Approach 2:
The extension unit acts as an intermediary structure that guides and directs the air flow from the blowing unit onto the electrode surface. This intermediary component ensures that the air flow is properly directed and concentrated on the target area, maintaining high removal efficiency while allowing for optimized air flow rates
2Productivity
If air flow rate is increased to improve foreign matter removal efficiency, then foreign matter removal efficiency is improved, but noise is generated
Solution Approach 1:
By concentrating air flow locally onto the electrode surface through the blowing unit and extension unit design, the system achieves effective foreign matter removal at lower overall air flow rates, thereby reducing noise generation while maintaining high removal efficiency
3Device complexity
If conventional blowing unit design is used, then device simplicity is maintained, but foreign matter removal efficiency is low due to Coanda effect
Solution Approach 1:
The blowing unit is segmented into multiple air blowing holes arranged in a specific pattern, allowing air to be blown in multiple directions simultaneously. This segmentation enables the air flow to overcome the Coanda effect and concentrate on the electrode surface, significantly improving foreign matter removal efficiency while keeping the overall device structure relatively simple
Solution Approach 2:
The extension unit is designed with a specific three-dimensional structure that extends toward the electrode surface. This dimensional extension creates a pathway that guides air flow from the blowing unit onto the electrode, changing the spatial dimension of air delivery and enabling effective foreign matter removal without complex mechanisms
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 device significantly improves foreign matter removal efficiency by 800% and increases the foreign matter removal rate by 5000%, reducing product defects and enhancing product uniformity and reliability.
Implementation Method 1
the air blown from the blowing unit 12 tends to be concentrated on the lower surface of the extension unit 16 between the blowing unit 12 and the suction unit 14, due to the Coanda effect
Data Source
Figure 1~2
Figure 3(a)~3(d)
Figure 4
AI summary
A foreign matter removal device according to an embodiment of the present disclosure removes foreign matters on the surface of an electrode that is continuously transferred along one direction, and includes a blowing unit that blows air toward the electrode surface, a suction unit that sucks foreign matters separated from the electrode surface, and an extension unit extending between the blowing unit and the suction unit, wherein the extension unit is formed with an adjustment unit recessed in a direction away from the electrode surface.