Reaction Vessel with Local Flat Surfaces for Light and Thermal Control
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Solution Overview
Problem
Existing reaction vessels in composite automatic analyzers struggle to maintain a predetermined temperature while allowing light measurement of transmitted or scattered light, as their shape prioritizes light measurement over temperature maintenance.
Innovation Solution
A cylindrical reaction vessel with two parallel flat surfaces for light transmission and a hemispherical bottom, minimizing heat transfer through these surfaces to maintain temperature control, combined with a grip portion for secure handling and a scratch-resistant frame for protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a reaction vessel shape is designed to facilitate light measurement (e.g., flat surfaces for transmitted light measurement), then measurement accuracy is improved, but temperature control performance deteriorates due to increased heat transfer through flat surfaces
Solution Approach 1:
The reaction vessel incorporates flat surfaces only in specific local regions where light measurement is required, while the majority of the vessel surface maintains a cylindrical shape for optimal temperature control. This localized application of flat surfaces resolves the contradiction by providing measurement capability without sacrificing overall thermal performance.
Solution Approach 2:
The reaction vessel is segmented into distinct functional zones: flat surface portions for light measurement and cylindrical portions for temperature maintenance. This segmentation allows each zone to optimize its specific function without compromising the other, addressing the trade-off between measurement accuracy and temperature control.
2Temperature
If a reaction vessel has a cylindrical shape with minimal flat surfaces, then temperature control is improved, but light measurement capability is degraded
Solution Approach 1:
Instead of making the entire vessel cylindrical, flat surfaces are introduced locally at specific positions where light measurement is needed. This maintains the temperature control advantages of the cylindrical shape while adding measurement capability where required.
Solution Approach 2:
The vessel is divided into cylindrical sections for thermal optimization and flat surface sections for optical measurement. This segmented design allows simultaneous achievement of both temperature control and light measurement functions.
3Measurement precision
If a reaction vessel has complex shape modifications for dual functionality, then both light measurement and temperature control are improved, but manufacturing complexity increases
Solution Approach 1:
Rather than redesigning the entire vessel geometry, flat surfaces are applied locally to specific regions. This minimizes manufacturing complexity while achieving the dual functionality of light measurement and temperature control.
Solution Approach 2:
The vessel design segments functionality into simple cylindrical portions and localized flat surface portions, keeping the overall structure relatively simple while achieving complex dual functionality through strategic placement of flat surfaces.
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
Enables accurate light measurement without degrading temperature control performance, improving handling and reducing damage risks, thus enhancing the functionality and reliability of the analysis process.
Implementation Method 1
irradiating a reaction liquid in which a specimen and a reagent are mixed in a reaction vessel with light
Implementation Method 2
a shape appropriate for maintaining the reaction vessel at a predetermined temperature is not considered
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
A reaction vessel capable of measuring a light amount from a reaction liquid without degrading a function of maintaining the reaction vessel at a predetermined temperature is provided. A reaction vessel for an automatic analyzer according one aspect of the invention has a cylindrical shape centered on a first axis, in which an overall length in a first axis direction is longer than an overall length in a second axis direction and an overall length in a third axis direction, the second axis being perpendicular to the first axis and the third axis being perpendicular to the first axis and the second axis. The reaction vessel includes: an opening part which dispenses a liquid at a portion on one end side in the first axis direction; a first flat surface which has one side extending in the first axis direction and the other side extending in the second axis direction from a portion on the other end side in the first axis direction; and a second flat surface which is substantially parallel to the first flat surface at a portion facing the first flat surface in the third axis direction, in which portions on side surfaces of the first flat surface and the second flat surface are formed to bend in a direction toward an outer side of the reaction vessel, and a length of the first flat surface and the second flat surface in the first axis direction is less than half the overall length in the first axis direction.