公开(公告)号：US20040175269A1

公开(公告)日：2004-09-09

申请号：US10791738

申请日：2004-03-04

Applicant: Halla Climate Control Corporation

Inventor： Kyungseok Cho ,  Seyoung Park ,  Changho Park

IPC: F03B001/00

CPC classification number: F04D29/384

Abstract: This present invention relates to an axial-flow fan including a central hub connected with a driving shaft of a motor, and a plurality of blades extending radially along the circumference of the hub for blowing air toward an axial direction, the plurality of blades integrated with the hub into a single body, wherein assuming that a camber ratio at a blade root(cr1) of each blade is the value obtained by dividing a maximum camber value at the blade root into a chord length, a camber ratio at a blade tip(cr2) of each blade is the value obtained by dividing a maximum camber value at the blade tip into the chord length, and a percentage of decrease of the camber ratio is the value obtained by dividing a difference value between the camber ratio at the blade root(cr1) and the camber ratio at the blade tip(cr2) into the camber ratio at the blade root(cr1), the percentage of decrease of the camber ratio is in a range between 33% and 85%.

Abstract translation: 本发明涉及一种轴流风扇，其包括与电动机的驱动轴连接的中心轮毂，以及沿着毂的圆周径向延伸的多个叶片，用于朝向轴向吹送空气，所述多个叶片与 所述轮毂形成单个主体，其中假设每个叶片的叶根（cr1）处的外倾比是通过将叶根处的最大外倾值除以弦长而获得的值，叶尖处的外倾比 每个叶片的cr2）是通过将叶尖处的最大外倾值除以弦长而获得的值，并且外倾比的减小百分比是通过将叶片根的外倾比除以差值而获得的值 （cr1）和叶尖处的外倾比（cr2）变成叶根（cr1）的外倾比，外倾比的下降百分比在33％〜85％的范围内。