Ion Analyzer Additive Flow Control for Contamination Reduction
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Solution Overview
Problem
Existing additive mixing methods in ion analyzers lead to contamination of the apparatus, increased power consumption, and slow switching between additives, resulting in reduced sensitivity and robustness, as well as inefficient reaction timing with measurement target substances.
Innovation Solution
An ion analyzer design that includes a spray unit for atomizing and spraying a liquid additive only when necessary, with a control unit to adjust the flow rate of the additive, preventing contamination and allowing quick switching between additives by separating the sample and additive flow passages and optimizing their interaction with the measurement target substance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the additive is continuously supplied to the spray unit, then the measurement target substance can be consistently ionized with high sensitivity, but the apparatus becomes contaminated with the additive, reducing robustness and requiring frequent maintenance
Solution Approach 1:
The control unit controls the supply of additive to the spray unit in a periodic manner, supplying the additive only during periods when measurement target substance is being introduced. This periodic supply maintains high sensitivity during measurement while preventing continuous contamination that would reduce robustness and require frequent maintenance.
2Productivity
If the flow rate of additive is increased to ensure sufficient reaction with measurement target substance, then ionization efficiency improves, but the contamination of apparatus increases and switching between additives becomes slower
Solution Approach 1:
The flow rate of additive is dynamically adjusted by the control unit based on the presence and concentration of measurement target substance. When measurement target substance is detected, the additive flow rate is increased to ensure sufficient reaction and high ionization efficiency. When no target substance is present, the flow rate is reduced or stopped, enabling faster switching between additives and reducing contamination.
3Ease of operation
If the additive flow passage is heated to prevent condensation and contamination, then the additive can be supplied smoothly, but the power consumption increases
Solution Approach 1:
The heating of the additive flow passage is controlled periodically, being activated only during periods when additive is being supplied. This periodic heating prevents condensation and ensures smooth additive supply during operation, while avoiding continuous power consumption when additive supply is not required.
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 minimizes contamination, reduces power consumption, and enables rapid switching between additives, maintaining high sensitivity and robustness while ensuring efficient reactions with measurement target substances.
Implementation Method 1
a spray unit for atomizing and spraying toward the measurement target substance a liquid containing an additive
Implementation Method 2
an ion source for ionizing a measurement target substance
Implementation Method 3
a separation analysis unit for separately analyzing an ion generated by a reaction between the measurement target substance and the additive
Implementation Method 4
a separation analysis unit for separately analyzing an ion generated by a reaction between the measurement target substance and the additive
Implementation Method 5
a detector for detecting the ion that has been separately analyzed by the separation analysis unit
Data Source
AI summary
To reduce contamination of the apparatus with an additive and to quickly switch spraying and stopping of the additive, provided is an ion analyzer including: an ion source for ionizing a measurement target substance, a spray unit for atomizing and spraying toward the measurement target substance a liquid containing an additive that reacts with the measurement target substance; a separation analysis unit for separately analyzing an ion generated by a reaction between the measurement target substance and the additive; a detector for detecting the ion that has been separately analyzed by the separation analysis unit; and a control unit for lowering a flow rate of the additive supplied to the spray unit during a time when the additive is not necessary.