公开(公告)号：US06543576B1

公开(公告)日：2003-04-08

申请号：US09620279

申请日：2000-07-18

申请人： Cameron Gorrell Cofer ,  Goran Knut Knutsson ,  Kunio Komori ,  Yukihito Sakai

发明人： Cameron Gorrell Cofer ,  Goran Knut Knutsson ,  Kunio Komori ,  Yukihito Sakai

IPC分类号： F01N110

CPC分类号： F01N1/006 ,  D04H3/07 ,  F01N1/023 ,  F01N1/04 ,  F01N1/24 ,  F01N2450/06 ,  F01N2490/15

摘要： A multiple layer fiber filled sound absorber and method of manufacturing the absorber are disclosed. The sound absorber includes an outer housing, a porous or perforated inner tube or housing defining a passageway through which a gas may flow, and two layers of sound absorbing material, such as fiberglass wool, is positioned between the housings. The sound absorbing material adjacent the inner housing is selected to be more heat resistant than the material farther away from the inner housing. The sound absorber is filled with the sound absorbing materials using a direct fill process in which continuous fibers are injected into the sound absorber. In preparation for filling, a partition is positioned between the housings to define two chambers. Each chamber is filled with one of the sound absorbing materials. The partition may then be removed from the sound absorber, or may be left in place (in which case the partition is preferably porous or perforated). The two sound absorbing materials may be filled to different densities. If the partition is removed, the densities will tend to equalize. The direct fill process simplifies and reduces the cost of filling the container and provides a muffler that is uniformly filled and has an improved sound absorbing quality.

摘要翻译： 公开了一种多层纤维填充的吸声器及其制造方法。 吸声器包括外壳，多孔或穿孔的内管或壳体，其限定气体可以流过的通道，并且两层吸音材料，例如玻璃纤维棉，位于壳体之间。 选择与内壳相邻的吸音材料比远离内壳体的材料更耐热。 吸声材料使用直接填充工艺填充吸音材料，其中将连续纤维注入到吸声器中。 在准备填充时，将隔板定位在壳体之间以限定两个室。 每个房间都填充有一种吸音材料。 隔板然后可以从吸声器移除，或者可以留在原位（在这种情况下隔板优选是多孔的或穿孔的）。 两种吸声材料可以被填充到不同的密度。 如果分区被移除，密度将趋于均衡。 直接填充过程简化并降低了填充容器的成本，并提供均匀填充并具有改善的吸音质量的消声器。