No.4（2001）14.Noise reduction of ultrasonic cleaners

Koichi KANDA, Norichika HASEGAWA, Masataka SAMITSU, Masaki YANAGISAWA, Akihiro MAKINO, Shoichi TAKADA and Kokichi KATO

The use of ultrasonic cleaners is increasing in order to protect the environment. Ultrasonic cleaners, which use cavitation, radiates high level noise. This makes the working environment worse. a method for decreasing this noise was examined in this research. It was found that countermeasures by sound insulation materials and sound absorbing materials were effective. Effective noise reduction is attained by combining sound insulation with Risilient skin.

Keywords
Cavitation, Subharmonics, Dumping, Sound insulation, Sound absorption, Resilient skin

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