Nebulizer Aerosol Stream Redirection via Varying Cross-Section
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Solution Overview
Problem
Conventional nebulizers inefficiently discharge aerosol away from the aerosol discharge port, leading to reduced effectiveness in delivering aerosolized vaccines or medications.
Innovation Solution
The nebulizer kit incorporates an external air introduction tube with an atomization portion at its center, surrounded by a case body that includes an aerosol carrier path and aerosol stream changing portions, such as a suspended wall or extension, to redirect aerosol streams efficiently towards the aerosol discharge port.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If aerosol is sprayed in all directions from the atomization portion, then aerosol coverage is improved, but aerosol discharge efficiency deteriorates
Solution Approach 1:
The aerosol carrier path is designed with different local characteristics: a first region with a larger cross-sectional area for aerosol generation and a second region with a smaller cross-sectional area for directed flow. This local variation in geometry optimizes both aerosol coverage and discharge efficiency by controlling flow dynamics in different zones of the same component.
Solution Approach 2:
The invention transitions from two-dimensional radial aerosol distribution to three-dimensional controlled flow by incorporating a vertically extended aerosol carrier path with varying cross-sectional areas. This dimensional change enables simultaneous achievement of comprehensive aerosol coverage and efficient directional discharge toward the discharge port.
2Quantity of substance
If the compressor capacity is increased to discharge more aerosol, then aerosol delivery effectiveness is improved, but device cost and complexity increase
Solution Approach 1:
The invention utilizes pneumatic principles by designing the aerosol carrier path to leverage compressed air flow dynamics. The varying cross-sectional areas create pressure gradients that enhance aerosol movement efficiency, allowing effective aerosol delivery with a smaller compressor capacity by optimizing the pneumatic transport mechanism rather than simply increasing power input.
3Quantity of substance
If aerosol is sprayed in directions away from the discharge port, then aerosol distribution is improved, but aerosol loss increases
Solution Approach 1:
The aerosol carrier path acts as an intermediary structure between the atomization portion and the discharge port. It receives aerosol in multiple directions, redirects it through controlled flow paths with varying cross-sectional areas, and delivers it efficiently to the discharge port, thereby achieving both good distribution and minimal loss.
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 enhances the nebulizer's ability to efficiently spray aerosols, allowing for a larger amount to be discharged per unit time, potentially reducing the compressor's required capacity and lowering costs.
Implementation Method 1
a nebulizer kit introducing compressed air to an atomization portion to generate aerosol
Implementation Method 2
an aerosol stream changing portion provided at a region of the aerosol carrier path to change positively toward the aerosol discharge port a stream of the aerosol flowing out in a direction away from the aerosol discharge port
Data Source
AI summary
The present nebulizer kit has a case body having a wall surface with a linear portion. The wall surface can serve as a barrier to change positively toward an aerosol discharge port a stream of aerosol flowing out from an external air introduction path in a direction away from the aerosol discharge port.