1. Air blow guns noise reduction through design and fabrication of a multiple jet nozzle
- Author
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Ali Safari Variani, saeid ahmadi, sajad zare, Atefe Sadat Beheshti, Fatemeh Heidari Abdolahi, and Vida Zaroushani
- Subjects
jet noise ,single jet nozzle ,multiple jet nozzle ,air blow gun ,noise reduction ,Medicine - Abstract
Background and aims: Discharging compressed air through conventional single jet nozzles or open pipes is a common jet noise in industry. This study is aimed to reduce air blow gun jet noise by designing and fabrication of multiple jet nozzle as a substitute for conventional single jet nozzles. Methods: One of the most common commercial air blow gun equipped with a conventional single jet nozzles was considered as a reference. An air Nozzle’s three dimensional model with multiple and smaller openings was designed by solid works software and the designed sketch was fabricated by a three dimensional printer. Noise measurement was made by a Cassella Cell 450 sound level meter with one octave band analyzer. Noise absorption foams were applied to mitigate noise reflection in the testing environment. Air thrust was measured using a digital scale that was placed 30 cm away from nozzle tips. Results: Multiple jet nozzle’s sound pressure level was measured significantly lower than conventional nozzle’s sound pressure level (P Value
- Published
- 2018