Liquid Sample Injection Apparatus Minimizing Adsorption
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Solution Overview
Problem
Existing liquid sample injection apparatuses for preparing standard gas face issues with liquid sample adsorption and damage due to heating, leading to inaccuracies and increased manufacturing costs.
Innovation Solution
A liquid sample injection apparatus with a minimized contact area between the sample and the apparatus, featuring a syringe with a needle having a closed tip and a discharge hole, and a penetration path that allows direct injection into the standard gas container, eliminating the need for heating and special coatings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a heating metal body is used to heat the syringe needle to volatilize liquid sample, then the liquid sample can be completely injected without deposition, but the rubber septum may be damaged due to excessive heating
Solution Approach 1:
The invention extracts and eliminates the heating metal body from the injection apparatus. Instead of heating the needle to volatilize the liquid sample, the apparatus allows direct injection of the liquid sample into the standard gas container, removing the source of excessive heat that damages the rubber septum while maintaining complete injection accuracy.
Solution Approach 2:
The invention employs a disposable syringe needle that is replaced after each use. This eliminates the need for a reusable heating metal body that causes damage over time, and ensures each needle is in optimal condition for accurate injection without the harmful thermal effects.
2Reliability
If the syringe needle is heated to volatilize deposited liquid sample, then sample leakage is prevented, but the injection apparatus complexity and manufacturing cost increase
Solution Approach 1:
The invention removes the heating metal body and associated heating mechanisms from the injection apparatus. By using a disposable needle and controlling injection parameters, the system achieves reliable sample injection without the complex heating infrastructure, thereby preventing sample leakage through simpler means.
Solution Approach 2:
The disposable needle is designed to be self-contained and self-discardable. Each needle is used once and then discarded, eliminating the need for complex cleaning, maintenance, or heating systems that would be required for reusable needles, thereby simplifying the overall apparatus while maintaining reliability.
3Manufacturing precision
If a heating process is implemented to ensure complete volatilization of liquid sample, then injection accuracy improves, but the risk of damaging sealing components increases
Solution Approach 1:
The invention extracts the heating process from the injection system. By eliminating the heating metal body and associated thermal processes, the system maintains injection accuracy through precise mechanical injection control while completely removing the source of heat that would compromise sealing component strength and durability.
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 prevents liquid sample adsorption and damage, enhances accuracy by ensuring complete injection, and reduces manufacturing costs by eliminating the need for special coatings and heating processes.
Implementation Method 1
gasifies the liquid sample to inject the gasified liquid sample into the standard gas container (500)
Data Source
AI summary
The purpose of the present invention is to provide an injection apparatus and an injection method for a liquid sample for standard gas production, wherein the injection apparatus for injecting a liquid sample present in a liquid state at room temperature into a standard gas container has an improved structure that minimizes the area in which the liquid sample directly contacts the injection apparatus so as to prevent the problem in which the liquid sample is adsorbed into the injection apparatus. Furthermore, another purpose of the present invention is to provide an injection apparatus and an injection method for a liquid sample for standard gas production, in which a step of volatilizing the remaining liquid sample by heating is eliminated during the injection of the liquid sample, thereby preventing the apparatus from being damaged by heating to thereby improve the durability of the apparatus.