Abstract
Nebulizers are inhalers for treating respiratory problems by converting aqueous solutions into aerosols of respirable size (1–5 ¼m) in the lower respiratory tract. In this study, improvements in the spray performance of the baffle type pneumatic nebulizer are investigated. First, to determine the causes of spray performance degradation, the reverse engineering of two pneumatic nebulizers is carried out. As a result, it was found that the major cause of performance degradation is the significant distortion of the inner parts due to the post-deformation after injection molding. Therefore, in this study, design changes are made to reduce post-deformation. Subsequently, to verify the spray performance of the suggested model, an injection molding analysis, flow analysis, and physical experiment are conducted. The results confirm that the suggested design helps improve the spray performance of a pneumatic nebulizer.
| Original language | English |
|---|---|
| Pages (from-to) | 1667-1673 |
| Number of pages | 7 |
| Journal | International Journal of Precision Engineering and Manufacturing |
| Volume | 16 |
| Issue number | 7 |
| DOIs | |
| State | Published - 25 Jun 2015 |
Keywords
- Computational fluid dynamics
- Injection mold analysis
- Pneumatic nebulizer
- Reverse engineering
- Spraying atomization performance