公开(公告)号：US20120308370A1

公开(公告)日：2012-12-06

申请号：US13577917

申请日：2011-02-09

申请人： Takanori Nagae ,  Shimei Tei

发明人： Takanori Nagae ,  Shimei Tei

IPC分类号： F04D17/16

CPC分类号： F04D29/441 ,  F04D29/162 ,  F04D29/4213 ,  F05D2250/51

摘要： A centrifugal fan has an impeller and a bell mouth. The bell mouth has a plurality of wall parts provided on an outer peripheral surface of the bell mouth. The wall parts are arranged at predetermined intervals on the outer peripheral surface in a circumferential direction of the outer peripheral surface. Each of the wall parts extends along the outer peripheral surface from the front side to the rear side in an axial direction so as to be substantially parallel to the axial direction and to a radial direction of the bell mouth.

摘要翻译： 离心风机有一个叶轮和一个喇叭口。 喇叭口具有设置在喇叭口的外周面上的多个壁部。 壁部在外周面的圆周方向上以规定间隔配置在外周面上。 每个壁部分沿着外周表面沿轴向方向从前侧延伸到后侧，从而基本上平行于喇叭口的轴向方向和径向方向。