Integrated Surface Particle Counter Scanner Head Design
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Solution Overview
Problem
Conventional surface particle-counting devices suffer from particle loss and inaccurate readings due to the distance between the surface and the particle sensor, as particles can stick to transport tubes and get trapped in fittings, especially with larger particles.
Innovation Solution
Combining the scanner and particle sensor into a single apparatus reduces the distance particles need to travel, eliminating intermediate tubes and potential particle traps by integrating the scanner and counter elements, with a scanner head that draws particles directly into a channel for airflow and a light-based particle counting mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the particle counter is positioned far from the surface, then the device can cover a larger area, but particles are lost due to sticking to transport tubes and trapping in fittings
Solution Approach 1:
The patent combines the scanner and particle counter into a single integrated unit, eliminating the separate transport tube system. The particle counter is positioned directly within the scanner housing, allowing particles to be counted immediately after being drawn from the surface, thereby eliminating particle loss due to sticking to tubes and trapping in fittings while maintaining the ability to cover large areas through scanner movement.
2Adaptability or versatility
If multiple transport tubes are used to connect scanner and counter, then the device can be modular, but particles stick to tubes and fittings causing inaccurate readings
Solution Approach 1:
The scanner and particle counter are merged into a single integrated housing, eliminating multiple transport tubes and fittings. This integration removes the sources of particle trapping and sticking that caused inaccurate readings, while the device maintains adaptability through the scanner's ability to move across different surfaces and the modular nature of the integrated unit.
3Productivity
If the scanner head is positioned close to the surface, then particle drawing efficiency is improved, but the device complexity increases due to integration requirements
Solution Approach 1:
The patent integrates the particle counter directly into the scanner housing, allowing the scanner head to be positioned close to the surface for optimal particle drawing efficiency. The integration is achieved by incorporating the counter electronics, light sources, and detection systems within the scanner housing itself, which manages the added complexity through unified design rather than separate connected components.
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 integration enhances the efficiency of particle counting by minimizing particle loss and improving accuracy, ensuring a constant airflow and effective filtration, leading to more reliable readings.
Implementation Method 1
a light source to illuminate particles as they pass through the view volume and a light detector to register the scattered light off the particles as they pass through
Implementation Method 2
a tube to a vacuum source to assure that a constant flow is maintained and to exhaust the air stream
Data Source
AI summary
A surface particle-counting device where the scanner element and the particle counting element have been combined so to reduce the number of lost particles and increase the overall efficiency of the particle-counting device. By removing the conventional tube that connects the scanner element and the particle counting element accuracy is increased.