Ion Mobility Spectrometer Circulatory Gas System
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Solution Overview
Problem
Existing ion mobility spectrometers face challenges in efficiently introducing ambient gas for analysis without additional transport devices, leading to accumulation effects and reduced operating time due to energy consumption and complex manufacturing.
Innovation Solution
A circulatory gas system is formed by connecting the measuring tube and filter with a dosing channel and an outlet channel, where the outlet channel is integrated between the transport device's high-pressure side and the measuring tube, allowing ambient gas to be introduced directly while gas flows out, reducing contamination and energy requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If additional transport devices are used to introduce ambient gas into the measuring tube, then gas introduction efficiency is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the function of introducing ambient gas into the measuring tube with the existing circulatory gas system. The gas outlet of the circulatory system is connected to the measuring tube inlet, allowing the same gas circulation pathway to serve dual purposes: maintaining drift gas flow and introducing ambient gas for analysis, thereby eliminating the need for separate transport devices
Solution Approach 2:
The circulatory gas system's transport device is made multi-functional by connecting it to both the drift chamber and the measuring tube. The system simultaneously performs drift gas circulation and ambient gas introduction functions, allowing one transport device to fulfill multiple roles in the instrument operation
2Productivity
If additional transport devices are used to introduce ambient gas, then gas flow control is improved, but energy consumption increases
Solution Approach 1:
The circulatory gas system serves itself by using its own transport device to introduce ambient gas into the measuring tube. The system leverages its existing gas circulation capability to perform the additional function of sample introduction, eliminating the need for separate energy-consuming transport devices and reducing overall power consumption
3Reliability
If ambient gas is introduced directly into the circulatory gas system, then accumulation effects are reduced, but gas contamination increases
Solution Approach 1:
The patent segments the gas pathways by introducing ambient gas directly into the measuring tube rather than mixing it with the entire circulatory gas system. This localized introduction minimizes the volume of gas that could become contaminated, while the direct pathway reduces accumulation effects by allowing faster exchange of gas molecules in the measurement region
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 solution enables efficient and direct introduction of ambient gas into the measuring tube without additional transport devices, minimizing accumulation effects and extending operating time by reducing energy consumption and manufacturing complexity.
Implementation Method 1
a measuring tube (1), a filter (3) and a transport device (2) are connected to form a circulatory gas system
Implementation Method 2
The outlet channel joins the circulatory gas system between the high-pressure side of the transport device (2) and the measuring tube (1), so that ambient gas for analysis is introduced into the measuring tube via the dosing channel
Implementation Method 3
the drift gas is guided in a closed loop circulatory gas system through a filter with the help of a transport device such as a gas pump or a fan. This removes the moisture from the gas in the circulatory gas system and cleans it
Implementation Method 4
The ions generated are separated according to their mobility in a drift gas... The ions move through the drift gas in an axial electric field to the other end of the drift chamber... The ions are temporally separated in the drift chamber because their speed in the drift gas is substance-specific
Data Source
AI summary
The invention relates to an ion mobility spectrometer in which a measuring tube, a filter and a transport device are connected to form a circulatory gas system, with a gas inlet which introduces ambient gas for analysis into the measuring tube of the ion mobility spectrometer. The invention involves connecting the measuring tube with the ambient gas by means of a dosing channel and connecting the circulatory gas system with the ambient gas by means of an outlet channel. The outlet channel joins the circulatory gas system between the high-pressure side of the transport device and the measuring tube, so that ambient gas for analysis is introduced into the measuring tube via the dosing channel while, at the same time, gas flows out of the circulatory gas system via the outlet channel without further transport devices being required.