Axial flow fan for air conditioner
US6325597A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1999 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Dec 30, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S416/05
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
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 1 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.about.0.75 has a maximum value of 0.05.+-.0.02.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.