Extraction Unit for Liquid Analysis with Integrated Heating
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Solution Overview
Problem
Existing liquid sample analysis systems face challenges in maintaining high temperatures throughout the fluid network, leading to cold spots and reduced sensitivity, and are energy-intensive due to the presence of valves and thermal inertia, which disrupts the analysis process.
Innovation Solution
An extraction unit with three connection points and a secondary channel with higher hydraulic resistance, eliminating intermediate valves between the preconcentrator and analysis device, and a heating system to maintain uniform temperature, ensuring efficient desorption and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If valves and intermediate components are present in the fluid network between preconcentrator and analysis device, then fluid flow control is improved, but temperature uniformity deteriorates leading to cold spots
Solution Approach 1:
The patent removes all intermediate valves and components from the fluid network between the preconcentrator and analysis device. This extraction of problematic elements eliminates the sources of thermal disruption and cold spots, allowing uniform temperature maintenance throughout the system.
2Ease of operation
If valves and intermediate components are present in the fluid network, then fluid flow control is improved, but energy consumption increases due to thermal inertia
Solution Approach 1:
By removing intermediate valves and components from the system, the patent reduces the total thermal mass that requires heating and maintenance. This extraction significantly lowers the energy consumption needed to maintain system temperature, eliminating the thermal inertia problem associated with multiple components.
3Device complexity
If liquid and gas flows are directed through the same path towards the analytical device, then device simplicity is improved, but analysis reliability deteriorates due to liquid disruption
Solution Approach 1:
The patent segments the fluid pathways by providing separate inlet channels: one dedicated to liquid sample flow and another dedicated to gas carrier flow. This segmentation prevents liquid from disrupting the gas phase analysis while maintaining relatively simple device architecture through clear functional separation.
4Object-affected harmful factors
If gravity-based liquid entry prevention is used, then liquid contamination is avoided, but system versatility deteriorates by relying on gravitational field
Solution Approach 1:
The patent replaces gravity-based liquid prevention with a pressure-controlled valve system that actively regulates fluid flow. This mechanical substitution allows the system to prevent liquid contamination through controlled valve operation rather than relying on gravitational orientation, thereby increasing versatility for different operating orientations and configurations.
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 configuration prevents analyte contamination, avoids cold spots, and reduces energy consumption by maintaining uniform temperature, enhancing the sensitivity and efficiency of the analysis process.
Implementation Method 1
a heating system to maintain uniform temperature
Implementation Method 2
These methods utilize fibers or rods with an adsorbent phase that captures a chemical species when impregnated with the liquid sample
Implementation Method 3
After drying the fibers with a gas, a desorption step using heat releases the captured chemical species in gaseous form
Data Source
Figure 1~2B
Figure 2C~2E
Figure 3A~3C
AI summary
The invention relates to an extraction unit used in an analysis system (1) for a liquid sample (20), comprising an extraction device (14) having at least one extraction zone for at least one analyte contained in said liquid sample and a gas-phase analysis device for said analytes. The extraction unit has three connection points. The first connection point (11) is arranged to be connected to a first fluidic inlet for receiving an incoming liquid flow from the liquid sample (20). The second connection point (12) is arranged to be connected to a second fluidic inlet for connecting to a first gas source (3) for injecting an incoming gas flow (FG1, FG2). The third connection point (13) is arranged to be connected to an analysis device (15).