Optical Aerosol Testing Apparatus for Real-Time Quality Control
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Solution Overview
Problem
Current methods for analyzing aerosols generated by aerosol-generating systems are either expensive and complex, such as chromatography, or unable to perform real-time puff-by-puff analysis, which is necessary for quality assurance and defect detection.
Innovation Solution
A low-cost, simple testing apparatus that includes an airflow channel, a sensing assembly with an emitter and receiver for measuring electromagnetic radiation, and a pump assembly to mimic user inhalation, allowing for real-time analysis of aerosols and detection of defects in aerosol-generating systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If chromatography equipment is used to analyze aerosol, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical chromatography systems with optical detection methods. The testing apparatus uses an optical detector to measure light absorption or scattering properties of aerosol particles in real-time, substituting mechanical separation and detection with optical measurement principles.
Solution Approach 2:
The patent creates a simplified model of aerosol analysis that captures essential measurement characteristics without replicating full chromatography functionality. By measuring key optical properties of aerosol particles directly, the system produces sufficient quality data for quality assurance without needing complete compositional analysis.
2Measurement precision
If chromatography is used for aerosol analysis, then measurement precision is improved, but productivity decreases due to inability to perform real-time analysis
Solution Approach 1:
The testing apparatus enables continuous real-time monitoring of aerosol generation throughout the product lifecycle. The optical detector continuously measures aerosol properties during each puff event, providing uninterrupted data streams for quality assurance rather than intermittent batch analysis.
Solution Approach 2:
The system performs measurements immediately as aerosol is generated, capturing data at the moment of creation. This real-time measurement approach allows for immediate detection of quality issues without delay, enabling prompt corrective actions in manufacturing processes.
3Measurement precision
If traditional testing methods are used, then measurement precision is improved, but loss of time increases due to complex analysis procedures
Solution Approach 1:
The patent replaces time-consuming mechanical chromatographic separation and detection with instantaneous optical measurement. The optical detector measures aerosol properties in real-time as particles pass through the detection chamber, eliminating the time required for mechanical separation processes.
4Ease of manufacture
If simple low-cost testing apparatus is used, then ease of manufacture is improved, but measurement precision may worsen
Solution Approach 1:
The patent replaces complex mechanical chromatography systems with optical detection methods. The testing apparatus uses an optical detector to measure light absorption or scattering properties of aerosol particles in real-time, substituting mechanical separation and detection with optical measurement principles.
Solution Approach 2:
The system measures different physical parameters of aerosol particles (optical properties) rather than attempting to measure chemical composition directly. This parameter change enables simpler, more cost-effective measurement while maintaining sufficient precision for quality assurance purposes.
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 testing apparatus enables efficient, real-time analysis of aerosols, allowing for quick detection of defects in aerosol-generating systems without disrupting production lines, and provides data for quality assurance testing.
Implementation Method 1
a sensing assembly, the sensing assembly comprising an emitter configured to emit electromagnetic radiation into the airflow channel
Implementation Method 2
a receiver configured to receive at least some of the electromagnetic radiation from the airflow channel
Implementation Method 3
a pump assembly that, in a first configuration of the testing apparatus, is configured to draw air through the airflow channel in a first direction
Data Source
AI summary
There is provided a testing apparatus for analysing an aerosol generated by an aerosol-generating system comprising an aerosol-forming substrate and a mouthpiece. The testing apparatus comprises an airflow channel that extends from a first channel opening that is configured to receive a mouthpiece of an aerosol-generating system. The testing apparatus further comprises a sensing assembly comprising an emitter configured to emit electromagnetic radiation into the airflow channel and a receiver configured to receive at least some of the electromagnetic radiation from the airflow channel. The testing apparatus further comprises a pump assembly that, in a first configuration of the testing apparatus, is configured to draw air through the airflow channel in a first direction such that an aerosol generated by the aerosol-generating system in use is drawn from the mouthpiece received in the first channel opening and through the airflow channel; and a controller configured to determine at least one characteristic of the aerosol drawn through the airflow channel based on signals received from the sensing assembly. There is also provided a method of analysing an aerosol using the testing apparatus and a method detecting a defect in an aerosol-generating system.