G1010505 強力吸引車の低騒音化に関する研究 : インナーサイレンサ長さが共鳴音に及ぼす影響([G101-05]機械力学・計測制御一般セッション(5))

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  • G1010505 Study on Noise Reduction of High-Powered Suction Truck : Effect of Inner Silencer Length on Resonance Sound

抄録

A high-powered suction truck has often been used at night in order to avoid traffic confusion in major cities in Japan. The noise reduction of the high-powered suction truck has been required from the environmental point of view. Root blowers have been widely used in order to make strong vacuum of a powerful suction vehicle. However the noise from the end of complex pipe line becomes large. Then the silencer has usually been connected downstream from a root blower in order to reduce the noise. However, the noise of the last end is still loud. In this study, it was clarified that the components set downstream the root blower caused resonance by measuring the sound pressure and the 27.1dB reduction could be obtained by adding an insertion silencer to a cooling-water catcher. In this paper , the noise reduction mechanism will be clarified by BEM analysis and the silencer theory.

収録刊行物

  • 年次大会

    年次大会 2014 (0), _G1010505--_G1010505-, 2014

    一般社団法人 日本機械学会

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