公开(公告)号：US20030161728A1

公开(公告)日：2003-08-28

申请号：US10373075

申请日：2003-02-26

Applicant: HALLA CLIMATE CONTROL CORPORATION

Inventor： Kyung-Seok Cho ,  Ok-Ryul Min ,  Chang-Ho Park ,  Se-Young Park

IPC: F01D001/00

CPC classification number: F04D29/164 ,  F04D29/326 ,  F04D29/526 ,  F04D29/685

Abstract: A fan and shroud assembly includes a fan has a hub rotating around one shaft and a plurality of blades extending outwardly from the hub, a shroud encompassing the fan to adjust airflow by rotation of the fan, a guide ring portion located at a position where a predetermined gap exists between the shroud and a circumference connecting end tips of the blades so that the fan coupled to the shroud rotates, and a plurality of swirl prevention units integrally formed with the guide ring portion to prevent a motion of vortex proceeding along a circumference connecting end tips of the blades between the guide ring portion and the circumference, each swirl prevention unit having a shape in which the length of a circular arc passing each of the swirl prevention units with respect to the center of the shroud decreases as the arc is closer to the center of the shroud.

Abstract translation: 风扇和护罩组件包括风扇，其具有围绕一个轴旋转的轮毂和从轮毂向外延伸的多个叶片;围绕风扇的护罩，通过风扇的旋转来调节气流;导向环部分，其位于 护罩与连接刀片端头的圆周之间存在预定的间隙，使得联接到护罩的风扇旋转，以及与引导环部分一体地形成的多个涡流防止单元，以防止沿着圆周连接的涡流运动 每个涡流防止单元具有这样一种形状：每个涡流防止单元相对于护罩中心通过的圆弧的长度随着电弧越接近而减小 到护罩的中心。