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Analysis of Noise Characteristic of Uneven Pitch Regenerative Blower
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 Title & Authors
Analysis of Noise Characteristic of Uneven Pitch Regenerative Blower
Lee, Kyoung-Yong; Jung, Uk-Hee; Kim, Jin-Hyuk; Kim, Cheol-Ho; Choi, Young-Seok; Ma, Jae-Hyun; Jeong, Kyung-Ho; Park, Woon-Jean;
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The flow and noise characteristics of the regenerative blower are evaluated experimentally. To decrease the noise of regenerative blower at a high frequency, we arrange the impeller vanes unevenly by special formula. The uneven pitch formular consists of the combination of trigonometric function. The magnitude of degree between each vanes and the control parameters of trigonometric functions are main design parameters for the uneven pitch. The flow characteristics of even and uneven impellers are tested by the fan tester and compared each results. The efficiency of a blower is calculated by the axial power using a dynamo system. The noise property of designed impeller is measured in an anechoic room. In this study, we certify that the uneven pitch impeller is effective in the noise reduction at a high frequency.
Noise Characteristic;Performance;Regenerative Blower;Uneven Pitch;
 Cited by
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