| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sound absorbing duct reducing a pressure loss of flow in the duct and exhibiting a silencing effect without reducing a ventilation flue space in the duct. <P>SOLUTION: The sound absorbing duct 1 has a sound absorbing material 3 formed by solidifying fibers formed of aluminum or an aluminum alloy and forming the solidified fibers into sheet shape, the sound absorbing material 3 being arranged as a flow straightening vane in a ventilation flue. <P>COPYRIGHT: (C)2009,JPO&INPIT |
