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http://dx.doi.org/10.3795/KSME-B.2011.35.2.205

Characteristics of Flow-Induced Noise in the Suction Nozzle of a Vacuum Cleaner with a Double-Blade Fan  

Park, I-Sun (Dept. of Mechanical Engineering, Sejong Univ.)
Sohn, Chae-Hoon (Dept. of Mechanical Engineering, Sejong Univ.)
Oh, Jang-Keun (Group of Vacuum Cleaner R&D, Samsung Gwangju Electronics)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.35, no.2, 2011 , pp. 205-213 More about this Journal
Abstract
The characteristics of noise generation in the suction nozzle of a vacuum cleaner are analyzed numerically and experimentally. First, the flow resistance induced by each element in the suction nozzle of a vacuum cleaner with a double-blade rotary fan is investigated numerically and its relation with flow-induced noise and suction performance is examined in an anechoic room. The flow resistance and vorticity in the suction nozzle are calculated, and it is found that they are closely related to flow-induced noise and that the upper limit of noise reduction is only 4 dBA. This upper limit can be achieved by changing the design of the brush nozzle. Two methods for noise reduction by enlargement of flow-inlet area and by optimization of the number of blades are tested. Finally, the effects of each method are verified experimentally.
Keywords
Flow-Induced Noise; Vacuum Cleaner; Suction Nozzle; Flow Resistance; Double-Blade Fan;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 0
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