NOISE REDUCTION OF AIR DISTRIBUTION GRILLES USING 3D PRINTED INFILL STRUCTURES

Authors

  • David Svoboda Czech
  • Petra Berkova
  • Frantisek Vlach
  • David Beckovsky
  • Milan Gabzdyl
  • Martin Deutsch

DOI:

https://doi.org/10.36336/akustika2023453

Keywords:

air distribution grille, noise reduction, 3D print, gyroid, honeycomb, decentral ventilation, autonomous ventilation system

Abstract

The aim of this research is to reduce the noise level of air distribution grilles using 3D printed infill structures. The grilles are installed on a newly developed autonomous ventilation system, which is used for decentralised ventilation of e.g., school classrooms. Several supply and return grilles with functional gyroid and honeycomb shaped infill structures were created and subsequently printed on an FDM 3D printer. Based on measurements and analysis of the maximum sound pressure levels at different microphone positions around the system and at different airflows, the combination of grilles with the greatest noise reduction was selected. The research is complemented by other data such as spectral analysis of the noise, measurement of the airflow velocity through the grilles and measurement of the room reverberation time. Significant noise reduction was achieved by using the proposed grilles and further conclusions were drawn. 3D printing technology proved to be a very useful tool in this case.

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Published

2023-03-31

How to Cite

Svoboda, D., Berkova, P., Vlach, F., Beckovsky, D., Gabzdyl, M., & Deutsch, M. (2023). NOISE REDUCTION OF AIR DISTRIBUTION GRILLES USING 3D PRINTED INFILL STRUCTURES. Journal Akustika, 45(45). https://doi.org/10.36336/akustika2023453

Issue

Section

TEMPLATE