Nano-Aerosol Nozzle Segmentation for Particle Size Control
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Solution Overview
Problem
Existing aerosol devices produce a significant amount of particles larger than 200 nm, leading to reduced effectiveness due to mass accumulation of larger particles, which are not released into the environment.
Innovation Solution
A device with a cylindrical upper and lower housing, a float, and specific protrusions that create spaces to break the surface tension of the liquid, reducing particle size by using a tapered nozzle opening and inclined floor to separate larger particles, allowing only smaller particles to be released.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional nozzle is used for aerosol release, then the device structure is simple, but the particle size distribution shows mass accumulation in particles larger than 200 nm
Solution Approach 1:
The nozzle is divided into multiple functional sections: a conical section for initial atomization, a cylindrical section for particle formation, and an expansion section for final dispersion. This segmentation allows each section to optimize specific aspects of aerosol generation, resulting in reduced mass accumulation of large particles while maintaining structural feasibility
Solution Approach 2:
Different sections of the nozzle have different geometric properties tailored to specific functions: the conical section has a specific angle for effective atomization, the cylindrical section maintains uniform diameter for stable particle formation, and the expansion section increases diameter for proper dispersion. This local optimization of geometric quality achieves superior particle size control
2Productivity
If the nozzle opening is increased to improve liquid flow, then the liquid atomization is enhanced, but larger particles are formed which accumulate mass above 200 nm
Solution Approach 1:
The nozzle design creates dynamic flow conditions through its geometric progression from conical to cylindrical to expansion sections. This dynamic structure adapts the liquid flow characteristics along the nozzle length, maintaining high productivity while controlling particle size by progressively transforming the flow regime from high-velocity atomization to stable dispersion
Solution Approach 2:
The nozzle geometry parameters change progressively along its length: the conical section angle controls initial atomization energy, the cylindrical section diameter maintains particle formation stability, and the expansion section diameter increase ensures proper dispersion. These parameter changes optimize both productivity and particle size distribution
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 device effectively reduces the mass of particles above 200 nm, improving the efficiency of aerosol dispersion by increasing the proportion of particles smaller than 200 nm, enhancing the device's performance compared to prior art.
Implementation Method 1
the distance T of the top end of the float to the inner side of the top end of the cylindrical bottom protrusion is greater than the respective circumferential distance C. The higher distance at the top of the bottom protrusion creates a bigger space or a room in which the surface tension of the liquid to be dispensed is broken and the particle size is greatly influenced.
Data Source
AI summary
The invention relates to a device including a nanoaerosol nozzle for releasing an aerosol with very fine particles.