| 摘要 |
PURPOSE:To effectively suppress the formation of vortex and suppress noise by providing a sound absorbing member consisting of a soft porous material on the inner wall of a passage in the curved part of the passage of a fluid equipment which is a noise generating source. CONSTITUTION:Onto the inner wall of a curved passage in a blower 1 or the like, a thin sound absorbing material 6 consisting of a soft porous material is connected. The sound absorbing material 6 is formed of, for example, a fabric consisting of nickel alloy wire, soft steel wire or synthetic resin (polymer material) having a wire diameter less than 200mum, which is provided with an intermittent void of 1-5mm between the inner wall of the curved passage and the fabric. |
