Dual Vacuum Valve Control for Sample Isolation
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Solution Overview
Problem
Current sample introduction systems for ICP spectrometry face inefficiencies in handling small volumes, leading to sample consumption issues, inaccurate analysis, and reduced throughput due to rapid sample loading and inadequate vacuum control, especially when handling multiple samples in microtiter trays.
Innovation Solution
A system utilizing dual vacuum configurations to control sample loading and rinse fluid flow, with a first vacuum configuration for precise sample isolation and a second for rapid rinse fluid transfer, and sensor-activated valve control to manage sample volume and prevent unnecessary consumption, ensuring accurate analysis and efficient processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single vacuum configuration is used for both sample loading and rinse fluid transfer, then the system structure is simple, but sample consumption increases and analysis accuracy decreases
Solution Approach 1:
The vacuum system is segmented into two distinct vacuum configurations: a first vacuum configuration (weaker vacuum) for sample loading and isolation, and a second vacuum configuration (stronger vacuum) for rinse fluid transfer. This segmentation allows each vacuum level to be optimized for its specific function, preventing sample consumption during rinse operations while maintaining simple overall system structure.
2Productivity
If rapid sample loading is used to improve throughput, then processing speed increases, but sample accuracy decreases and unnecessary sample consumption occurs
Solution Approach 1:
The system dynamically switches between different vacuum configurations based on the operational phase: using weaker vacuum during sample loading and isolation to maintain precision, and stronger vacuum during rinse fluid transfer to maximize throughput. This dynamic adaptation resolves the contradiction between speed and accuracy.
Solution Approach 2:
The sensor-activated valve control system automatically detects sample presence and triggers valve closure to isolate the sample, eliminating the need for manual intervention and preventing over-loading. This self-service mechanism ensures accurate sample volume control while maintaining efficient throughput.
3Loss of substance
If sensor-activated valve control is implemented to prevent sample consumption, then sample economy improves, but system complexity increases
Solution Approach 1:
The sensor-activated valve control implements feedback by continuously monitoring sample presence at the valve and automatically closing the valve when sample is detected. This feedback mechanism prevents sample consumption during rinse operations while adding minimal complexity through a straightforward sensor-valve linkage.
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 system minimizes sample consumption, allows for reanalysis, and significantly improves throughput by optimizing sample handling and rinse protocols, reducing processing time and costs associated with handling large numbers of samples.
Implementation Method 1
a vacuum source in fluid communication with the autosampler unit via the valve
Implementation Method 2
draw sample from a sample container... draw rinse fluid from a rinse container
Data Source
AI summary
Systems and methods are described for transporting sample using a first vacuum configuration and subsequently isolating the sample at a valve prior to introduction to an analysis system, where a second vacuum configuration transports other fluids through the system. A system embodiment can include, but is not limited to, a valve system including a first valve in fluid communication with a sample reservoir and a second valve having at least a first vacuum configuration to fluidically couple a first vacuum line with the first valve and having a second vacuum configuration to fluidically couple a second vacuum line with the first valve; a sensor system configured to detect presence or absence of a fluid at the first valve; and a controller configured to control operation of the second valve to block access of the first vacuum line to the first valve upon detection of the fluid at the first valve.