Flow-through Vial Oblique Liquid Introduction Reduces Turbulence
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Solution Overview
Problem
In autosamplers with flow-through vials, high-speed sample flow leads to turbulence and bubble generation, impairing the quantitativeness of sample suction by the needle, which affects analysis results.
Innovation Solution
The flow-through vial design includes a liquid introduction part guiding liquid obliquely to the radial direction in its horizontal cross-section, reducing turbulence and bubble formation, and a liquid discharge part with a discharge flow path aligned with the liquid flow, promoting a spiral flow for efficient liquid handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sample flows into the flow-through vial at high speed, then productivity is improved, but turbulence occurs and bubbles are generated which worsens measurement precision
Solution Approach 1:
The liquid introduction part is designed with a curved flow path that guides liquid in a direction oblique to the radial direction in horizontal cross-section. This curved geometry reduces turbulence by smoothly directing the high-speed liquid flow along the vessel wall, preventing bubble generation while maintaining high flow rates for improved productivity
Solution Approach 2:
The invention changes the flow direction parameters by introducing liquid at an oblique angle relative to the radial direction rather than directly radially inward. This parameter modification optimizes flow patterns to eliminate turbulence and bubbles, ensuring accurate sample suction quantitativeness even at high flow speeds
2Ease of operation
If liquid is introduced directly into the center of the internal space, then ease of operation is improved, but turbulence occurs which worsens measurement precision
Solution Approach 1:
The liquid introduction part is positioned and oriented to introduce liquid locally along the inner peripheral surface rather than into the center. This localized introduction approach creates a smooth flow pattern along the wall, preventing turbulence and bubble formation while maintaining operational simplicity
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 design significantly reduces turbulence and bubble generation, enhancing the quantitativeness of liquid suction by the needle, thereby improving analysis accuracy.
Implementation Method 1
when a sample from a sample supply source flows into the flow-through vial at high speed (for example, 50 mL/min or more), turbulence occurs in the flow-through vial, and bubbles may be generated in the flow-through vial
Implementation Method 2
an upper surface sealing member for sealing an upper surface of the internal space, the upper surface sealing member being made of an elastic material which can be penetrated by a needle descending from above
Data Source
AI summary
A flow-through vial includes: a columnar internal space for containing a liquid; a liquid introduction part provided in a lower portion of a side surface for guiding the liquid to the internal space in a direction oblique to a radial direction in a horizontal cross section of the internal space; a liquid discharge part provided in an upper portion of the side surface for guiding the liquid in the internal space to outside; and an upper surface sealing member for sealing an upper surface of the internal space, the upper surface sealing member being made of an elastic material which can be penetrated by a needle descending from above.