Development of Low Noise Blower Fan

971842

05/19/1997

Event
1995 Vehicle Thermal Management Systems Conference and Exhibition
Authors Abstract
Content
Noise reduction of Automotive HVAC systems is a hard task because of the highly complicated and very sensitive turbulent flow in the blower fan unit. First, we identified the location of noise sources by the Sound Intensity (SI) method, then we investigated the flow pattern by the oil-mist method. As a result, two main noise generation mechanisms have been identified. One mechanism is generated by the interaction of the strong steady flow of air in the unit with the fan wheel, and the other is from the turbulent flow between the fan blades.
Results:
A new fan blade design was developed that had improved control of the turbulent flow, and which configuration caused a noise reduction of 2 dB-A over current blown fan systems.
Meta TagsDetails
DOI
https://doi.org/10.4271/971842
Pages
6
Citation
Saeki, N., Kamiyama, K., Uomoto, M., and Ishihara, Y., "Development of Low Noise Blower Fan," SAE Technical Paper 971842, 1997, https://doi.org/10.4271/971842.
Additional Details
Publisher
Published
May 19, 1997
Product Code
971842
Content Type
Technical Paper
Language
English