Evaporation Concentration Pressure Control to Suppress Bumping
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Solution Overview
Problem
Existing evaporation concentration processes in automatic analyzers face issues with bumping during rapid depressurization and heating, leading to substance loss and accuracy deterioration, and require complex and costly gas supply systems for depressurization control.
Innovation Solution
An evaporation concentration mechanism using a depressurization channel with solenoid valves controlled by a control unit to intermittently open and close during depressurization, allowing for gentle depressurization rate control without the need for expensive gas supply systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If rapid depressurization is applied during evaporation concentration, then productivity is improved, but bumping occurs causing loss of substance to be analyzed and deterioration in measurement precision
Solution Approach 1:
The solenoid valve is intermittently opened and closed during depressurization to control the depressurization rate. This periodic action prevents bumping by avoiding rapid pressure changes while maintaining efficient evaporation concentration, thus resolving the contradiction between productivity and measurement precision
2Reliability
If gas supply system is used to control depressurization rate, then bumping is suppressed, but device complexity and cost increase
Solution Approach 1:
The invention extracts only the essential function of depressurization control from the complex gas supply system. By using a solenoid valve integrated into the existing depressurization channel to intermittently control pressure release, the bumping suppression function is achieved without the complexity and cost of external gas supply equipment
Solution Approach 2:
The depressurization channel with solenoid valve controls its own operation to regulate pressure changes. The system uses its inherent depressurization capability combined with intermittent valve control to suppress bumping, eliminating the need for separate gas supply systems
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
The mechanism effectively suppresses bumping and maintains accuracy by controlling depressurization rates using a simple and cost-effective setup, suitable for integration into automatic analyzers.
Implementation Method 1
an evaporation concentration process has been executed by evaporating the solvent in a sample
Implementation Method 2
a depressurization source connected to the reaction vessel via the depressurization channel and configured to depressurize the inside of the reaction vessel
Data Source
AI summary
An evaporation concentration mechanism is realized that can control a depressurization rate by an inexpensive and simple mechanism to inhibit bumping at the time of evaporation and concentration. The evaporation concentration mechanism includes a reaction vessel that holds a sample solution, a depressurization channel connected to the reaction vessel, and a depressurization source that is connected to the reaction vessel via the depressurization channel and depressurizes the inside of the reaction vessel. The evaporation concentration mechanism further includes at least one of solenoid valves provided in the depressurization channel, and a control unit 8 that controls an operation of the solenoid valves. The control unit 8 intermittently opens and closes the solenoid valves during a depressurization period in which the inside of the reaction vessel is depressurized by the depressurization source.