Nebulizer Particle Sorting Route Design
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Solution Overview
Problem
Conventional nebulizer kits have low efficiency in using compressed air due to mechanical interactions that reduce upward momentum and increase horizontal momentum, leading to a significant loss of energy in aerosol flow, which impedes the flow of aerosols and affects particle diameter adjustment.
Innovation Solution
A nebulizer kit with a particle sorting route that includes a first particle sorting route with a uniform cross-sectional area, a second particle sorting route with a curved inner wall, and a third particle sorting route with a larger cross-sectional area, allowing aerosols to flow smoothly and adjust particle diameters without the need for a spiral sorting route, thereby improving compressed gas efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a spiral sorting route with blade portions is used to adjust particle diameter, then particle sorting effectiveness is improved, but compressed gas efficiency deteriorates due to loss of upward momentum and increase in horizontal momentum
Solution Approach 1:
The particle sorting route is divided into multiple straight sections (first, second, and third sorting routes) rather than using a single spiral structure. Each section has a specific function: the first section guides aerosol upward, the second section sorts particles by diameter through a curved inner wall, and the third section continues guidance to the discharge port. This segmentation maintains upward momentum while achieving particle sorting.
Solution Approach 2:
Instead of using a spiral structure that converts upward momentum to horizontal momentum, the invention inverts the approach by using straight vertical sections with a curved wall in the second section that redirects aerosol flow while maintaining upward direction. This inversion preserves the beneficial upward momentum of the compressed gas.
2Manufacturing precision
If blade portions are used to change aerosol flow direction, then particle sorting is achieved, but energy loss increases due to repeated collisions and momentum reduction
Solution Approach 1:
The invention extracts the essential sorting function from the complex spiral blade structure and implements it through a simpler curved inner wall in the second particle sorting route. This curved wall redirects aerosol flow to achieve particle sorting without the energy losses associated with multiple blade collisions and spiral transitions.
Solution Approach 2:
The inner wall of the second particle sorting route is designed with a curved shape that smoothly redirects aerosol flow. This curvature allows for gentle redirection of the aerosol stream, achieving particle sorting through controlled flow patterns rather than through repeated sharp collisions with blade portions.
3Manufacturing precision
If a conventional spiral particle sorter is used, then particle diameter adjustment is achieved, but aerosol flow inhibition increases leading to reduced ejection performance
Solution Approach 1:
The particle sorting route has varying cross-sectional areas optimized for different functions: the first section has a uniform cross-section for efficient upward guidance, the second section has a curved inner wall for particle sorting, and the third section has a larger cross-sectional area to reduce flow inhibition. This local optimization of geometry maintains high aerosol ejection efficiency while achieving particle sorting.
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 improved nebulizer kit enhances the efficiency of using compressed gas by reducing the inhibition of aerosol flow and maintaining particle sorting effectiveness, allowing for the efficient discharge of aerosols with smaller particle diameters, thus improving aerosol ejection performance.
Implementation Method 1
an atomizer that generates an aerosol by atomizing a liquid
Implementation Method 2
particles with a particle diameter of a certain value or more among the particles of the aerosol are attached thereto
Data Source
AI summary
A nebulizer kit includes an atomizer generating an aerosol, and a particle sorting route communicating with the atomizer and sorting liquid particles in the aerosol to adjust a particle diameter distribution thereof, and guiding the aerosol to a discharge port. The particle sorting route includes a first particle sorting route with a uniform cross-sectional area in the first direction and a second particle sorting route with an inner end wall that curves from the first direction toward a second direction included in the same plane as the first direction. The first particle sorting route guides the aerosol to the second particle sorting route in the first direction, and the inner end wall of the second particle sorting route guides the aerosol in the second direction while aerosol particles with a certain particle diameter or more are attached thereto.