| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pipe soundproof structure efficiently preventing a noise of supply/discharge water. SOLUTION: A pipe soundproof structure 21 has a deformed pipe 23 and straight pipes 22, 24 adjacent to this deformed pipe 23. In this pipe soundproof structure 21, a periphery of the pipe 23 of deformed part is coated with a pipe soundproof material 28 including a layer 25 of viscoelastic unit, layer 26 of sound absorbing material and a layer 27 of sound insulating material. In this pipe soundproof structure 21, the straight pipe 22, 24 adjacent to the deformed pipe 23 is provided with a deformed shape vicinity part, its pipe periphery is coated with pipe soundproof materials 32, 38 including layers 29, 35 of the viscoelastic unit, layers 30, 36 of the sound absorbing material and layers 31, 37 of the sound insulating material. In a pipe flow path having this pipe soundproof structure 21, even when an impulse sound of passing object is generated, this impulse sound can be most effectively absorbed.</p> |
