Axial flow fan for air conditioner

Application Number: 00102658
Application Date: 2000.02.25
Publication Number: 1287226
Publication Date: 2001.03.14
Priority Information: 1999/9/7 KR 37837/99; 1999/9/20 KR 40416/99
International: F04D29/38
Applicant(s) Name: LG Electronics Inc.
Inventor(s) Name: Kim Wansu;Chin Sinwon;Park Seungchol
Patent Agency Code: 11105
Patent Agent: li xiaoshu
Abstract An axial flow fan for an air conditioner is disclosed. This axial flow fan is capable of changing the shape of blades by varying a design factor such as a chord length, a sweep angle, etc., generating an enough flowing amount of a fan for implementing an efficient heat radiation of a heat exchanger, and decreasing a noise which occurs during an air flowing operation of the fan, so that it is possible to implement a high efficiency and low noise fan system. The above-described axial flow fan according to the present invention includes a hub engaged to a rotary shaft of a motor, and a plurality of blades engaged to the hub, wherein assuming a coordinate which is obtained by computing a distance R in a radial direction of the blade into a distance from a radius Rh to a radius Rt at a blade tip BT based on a non-dimensional method as 'r' (r=(R-Rh)/(Rt-Rh), a maximum camber ratio Hc(r) which is a ratio between a maximum camber Cmax and a chord length l has 0.02+/-0.01 at a hub BH of r=0, 0.04+/-0.015 at a blade tip BT of r=1, and a maximum camber ratio at a portion of r=0.6-0.75 has a maximum value of 0.05+/-0.02.