Many machinery applications require cooling. Cooling is provided normally by fans, which sometimes generate excessive noise even compared to the machine, itself. By adequate design it is possible to reduce the noise generated by the fan in its application. The design process consists of the selection of the fan impeller and design of the casing including the surrounding structures of the fan. A number of various impeller types were experimentally tested in order to find the best solution for an induction machine cooling application without using additional noise control means. The study included axial fans of several diameter and blade angle combinations, two different axial fan designs and radial fans. All the fans were selected to suit the same cooling requirements. The effects of some surrounding structure alternatives were also reviewed. For each fan design both the performance and sound power were measured. The results are presented as performance and specific sound power curves, which give a wider perspective of the fan operation. The results are also reviewed as 1/3-octave band frequency spectra. This study shows that the selection of the fan and design of the arrangement play a significant role considering the sound power generated.
|Title of host publication||Proceedings of the 5th European Conference on Noise Control|
|Publisher||European Acoustics Association|
|Number of pages||6|
|Publication status||Published - 2003|
|MoE publication type||A4 Article in a conference publication|
|Event||5th European Conference on Noise Control, Euronoise 2003 - Naples, Italy|
Duration: 19 May 2003 → 21 May 2003
|Conference||5th European Conference on Noise Control, Euronoise 2003|
|Period||19/05/03 → 21/05/03|
- induction machine
- cooling fan
Hyrynen, J., & Karjalainen, A. (2003). Low noise cooling fan integration in an induction machine application. In Proceedings of the 5th European Conference on Noise Control European Acoustics Association.