Needle-Annular Electrode Ionization Layout for Higher Gas Ionization
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Solution Overview
Problem
The rate of gas ionization in existing ionization devices is low due to inefficient discharge distribution and gas flow paths.
Innovation Solution
The ionization device includes a pair of electrodes with a discharge needle and an annularly disposed second electrode, where the gas outflow port diameter is smaller than the second electrode, and the channel tube is separate from the electrode tube, allowing for focused discharge and efficient gas ionization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a discharge needle and counter electrode are disposed in a sample introduction tube, then gas can be introduced and discharged, but the rate of gas ionization is low
Solution Approach 1:
The patent applies local quality by creating a concentrated discharge region at the tip of the discharge needle through precise positioning. The counter electrode is configured with a specific diameter relationship (channel tube diameter < counter electrode diameter) to concentrate the electric field and discharge energy at the needle tip, ensuring high ionization efficiency in the critical ionization zone while maintaining overall system functionality.
Solution Approach 2:
The patent separates the channel tube function from the electrode tube function into distinct spatial dimensions. The channel tube carries gas flow while the electrode tube generates discharge, with the discharge needle positioned to protrude through the channel tube into the electrode tube. This dimensional separation allows independent optimization of gas flow path and discharge region, resolving the contradiction between gas introduction and efficient ionization.
2Ease of operation
If the channel tube diameter is larger, then gas flow is easier, but the discharge region becomes less concentrated and ionization rate decreases
Solution Approach 1:
The patent segments the system into distinct functional components: a channel tube for gas flow and an electrode tube for discharge generation. The discharge needle protrudes from the channel tube into the electrode tube, creating a focused discharge region. This segmentation allows the channel tube to be optimized for gas flow while the electrode tube optimizes the discharge region concentration, resolving the contradiction between easy gas flow and high ionization rate.
Solution Approach 2:
The patent applies local quality by concentrating the discharge energy specifically at the needle tip region where ionization is needed, while allowing the channel tube to maintain a larger diameter for efficient gas flow. The counter electrode diameter is specifically designed to be larger than the channel tube diameter to contain and concentrate the discharge in the electrode tube region, achieving both goals simultaneously.
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 configuration enhances the efficiency of gas ionization by concentrating the discharge at the tip of the discharge needle, improving the ionization rate and reducing abnormal discharge.
Implementation Method 1
A pair of electrodes generate a discharge region
Implementation Method 2
The pair of electrodes include a first electrode and a second electrode... the rate of gas ionization can be increased
Data Source
AI summary
An ionization device includes a pair of electrodes and a channel tube. A pair of electrodes generate a discharge region. A gas flows through the channel tube. The pair of electrodes include a first electrode and a second electrode. The second electrode is annularly disposed around a tip of the first electrode. A diameter of a gas outflow port of the channel tube through which the gas flows to the discharge region is smaller than a diameter of the second electrode.