Liquid Ejection Apparatus Screen for Aerosol Contamination Control
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Solution Overview
Problem
Existing liquid ejection apparatuses, such as those using the inkjet principle, face contamination issues due to mist formation during liquid ejection, which can lead to aerosol accumulation and contamination of the apparatus and the ejected liquid.
Innovation Solution
A liquid ejection apparatus with an ejection unit that includes a screen to cover the opening portion of the storage part, preventing external contamination by screening the internal space from the external space during the ejection process, and a replaceable ejection unit filled with liquid, allowing for precise control and minimization of aerosol entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If liquid ejection is performed using inkjet principle, then liquid can be precisely dispensed, but mist is generated and aerosol accumulates causing contamination
Solution Approach 1:
A screen is introduced as an intermediary component between the ejection unit and the storage part opening. The screen allows liquid droplets to pass through while blocking aerosol particles, serving as a selective mediator that permits desired liquid transfer while preventing harmful aerosol contamination of the storage environment
Solution Approach 2:
The screen creates a protected environment within the storage part by blocking external aerosol entry. This establishes a controlled, contamination-free space that maintains liquid integrity, similar to how inert atmospheres protect sensitive materials from environmental contamination
2Adaptability or versatility
If ejection unit is made replaceable and filled with liquid, then operation flexibility is improved, but risk of contamination during ejection increases
Solution Approach 1:
The screen serves as a protective intermediary that remains in place during ejection operations, allowing multiple ejection units to be replaced and used without compromising the contamination-free environment. The screen mediates between the replaceable ejection units and the protected storage space
Solution Approach 2:
The system is segmented into replaceable ejection units and a permanent protected storage environment. This segmentation allows the ejection units to be independently replaced for different operations while the screen-maintained environment remains consistently protected from contamination
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 solution effectively inhibits contamination of the ejected liquid by minimizing aerosol entry and maintaining a clean environment within the apparatus, ensuring the integrity of the dispensed or introduced substances.
Implementation Method 1
an ejection unit having an ejection part and an ejection energy generation element that ejects a liquid from the ejection part by using a principle of inkjet ejection
Data Source
AI summary
Provided is a liquid ejection apparatus, liquid ejection method, dispensing apparatus, and compound introduction apparatus capable of inhibiting contamination of a liquid after being ejected. The liquid ejection apparatus has an ejection unit having an ejection part and an ejection energy generation element that ejects a liquid from the ejection part by using a principle of inkjet ejection into an internal space in a storage part capable of storing the ejected liquid. When ejecting the liquid, the ejection unit covers an opening portion of the storage part to thereby screen the internal space in the storage part from an external space.