Mixing Element Vertical Alignment via Diagnostic Routines
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Solution Overview
Problem
Existing sample-reagent mixing technologies in clinical analyzers are inefficient due to sensitivity to the vertical location of stirring elements, leading to incomplete mixing, increased time, and mechanical failures, and lack a reliable means for adjusting the height of mixing elements.
Innovation Solution
A method for incrementally adjusting the height of a mixing element by performing mixing tests at different vertical positions to determine the optimal position for maximum efficiency, ensuring the mixing element is positioned correctly relative to the bottom of the reaction vessel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed height for stirring element is used, then device complexity is reduced, but mixing reliability deteriorates due to sensitivity to vertical location
Solution Approach 1:
The patent performs preliminary alignment actions by positioning the mixing element at multiple test heights and evaluating mixing quality before final operation. The system pre-determines the optimal vertical position through diagnostic mixing routines, storing this information for subsequent mixing operations to ensure reliable performance.
Solution Approach 2:
The patent implements feedback mechanisms by measuring mixing quality at different vertical positions and using this information to determine the optimal height. The system evaluates mixing effectiveness (e.g., through absorbance measurements) and adjusts or selects the vertical position based on this feedback, creating a closed-loop alignment process.
2Ease of operation
If manual estimation of stirring element height is used, then ease of operation is improved, but manufacturing precision deteriorates due to operator error
Solution Approach 1:
The patent enables the mixing device to self-align through automated diagnostic routines. The system performs self-testing by evaluating mixing quality at different heights and automatically determining the optimal vertical position without requiring manual measurement or operator judgment, thereby achieving both ease of operation and high precision.
Solution Approach 2:
The patent replaces manual mechanical height adjustment with an automated optical/electronic measurement system. Instead of relying on operator estimation or mechanical gauges, the system uses absorbance measurements and computational algorithms to precisely determine the optimal vertical position, substituting mechanical processes with optical-electronic ones.
3Reliability
If stirring element is placed too high, then mechanical failure is reduced, but mixing uniformity deteriorates
Solution Approach 1:
The patent implements dynamic height selection rather than a static fixed position. The system determines the optimal vertical position based on real-time evaluation of mixing quality and adjusts the stirring element height accordingly. This dynamic approach allows the system to optimize both mechanical stability and mixing uniformity for each specific operational context.
4Manufacturing precision
If stirring element is placed too low, then mixing effectiveness is improved, but mechanical failure increases due to impact with vessel bottom
Solution Approach 1:
The patent performs preliminary evaluation of different vertical positions to identify the optimal height before actual mixing operations. By pre-testing and storing alignment information, the system avoids trial-and-error adjustments that could cause mechanical impact, thereby protecting the stirring element while ensuring mixing quality.
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 approach allows for high-speed, uniform mixing of solutions with improved efficiency and reliability, reducing the risk of mechanical failure and operator error, while maintaining a compact design.
Implementation Method 1
moving the mixing element in a horizontal mixing pattern to create a mixed state of the liquid solution
Data Source
Figure 1
Figure 2
Figure 2A~2B
AI summary
A method and apparatus for adjusting the height of a tip of a mixing element, such as a needle probe, compares the mixing efficiency observed at two heights separated by a predetermined distance. The heights can be incrementally adjusted to determine the location of the bottom of a mixing vessel and, by extension, the approximate location for placing the mixing element for efficient mixing of solutions in the mixing vessel.