Multidimensional Sample Separation Pressure Synchronization
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Solution Overview
Problem
Conventional multidimensional sample separation apparatuses experience pressure shocks and fluctuations during the transfer of fluidic samples from the first separation dimension to the second, leading to potential damage and artefacts in the separation process.
Innovation Solution
A multidimensional sample separation apparatus with a switching mechanism that synchronizes the inlet pressures of the second and third sample separation units to be substantially the same, preventing sudden pressure changes and ensuring efficient operation by alternatingly coupling the outlet of the first separation dimension to either unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a switching mechanism is used to transfer fluidic sample between separation units, then separation capability is improved, but pressure shocks and fluctuations occur during switching
Solution Approach 1:
The control unit equalizes the inlet pressures of the second and third sample separation units before switching occurs. This preliminary pressure equalization prevents pressure shocks during the switching process by ensuring both units are at the same pressure state before the transfer begins.
Solution Approach 2:
The system compensates for pressure differences between separation units before switching by adjusting flow rates or using pressure regulation mechanisms. This cushioning approach prevents sudden pressure changes that could damage fluidic components or create artifacts in the separation process.
2Manufacturing precision
If multiple sample separation units are used in the second separation dimension, then separation precision is improved, but device complexity increases
Solution Approach 1:
The second separation dimension includes multiple sample separation units (second and third units) that can be selectively switched between. This multi-functionality allows the system to perform different separation tasks using different units, improving separation precision while managing complexity through controlled selection rather than simultaneous operation of all units.
Solution Approach 2:
The control unit prepares the pressure conditions in advance for each separation unit before switching occurs. This preliminary preparation ensures that when switching between multiple units, the transition is smooth and controlled, preventing complexity from leading to uncontrolled pressure variations.
3Reliability
If pressure equalization control is implemented during switching, then reliability is improved, but control complexity increases
Solution Approach 1:
The control unit monitors pressure conditions in the sample separation units and adjusts flow rates or switching timing based on this feedback. This closed-loop control ensures reliable pressure equalization during switching while automating the process to manage control complexity.
Solution Approach 2:
The system uses the existing fluid drive units and flow control mechanisms to automatically equalize pressures between separation units. This self-service approach allows pressure equalization to occur through the system's own operational parameters rather than requiring external intervention or complex additional control 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
This solution prevents pressure-related damage and artefacts, enhancing the reliability and longevity of fluidic components while maintaining precise separation results by maintaining consistent pressure conditions during the transfer process.
Implementation Method 1
a first separation dimension for separating the fluidic sample and comprising a first fluid drive unit for driving the fluidic sample and a first mobile phase through a first sample separation unit for separating the fluidic sample
Implementation Method 2
a second separation dimension for further separating the fluidic sample separated by the first separation dimension, wherein the second separation dimension comprises a second fluid drive unit for driving the separated fluidic sample and a second mobile phase through a second sample separation unit and a third sample separation unit each configured for further separating the separated fluidic sample
Data Source
AI summary
A multidimensional sample separation apparatus includes a first separation dimension for separating a fluidic sample, a second separation dimension for further separating the fluidic sample, a switching mechanism, and a control unit. The first separation dimension includes a first fluid drive unit and a first sample separation unit. The second separation dimension includes a second fluid drive unit for driving the separated fluidic sample, and second and third sample separation units each configured for further separating the separated fluidic sample. The switching mechanism is configured for selectively switching an outlet of the first separation dimension in fluid communication with a selected one of the second sample separation unit and/or the third sample separation unit. The control unit is configured for controlling a pressure at inlets of the second sample separation unit and the third sample separation unit to be substantially the same at least at the time of the switching.