EP 1070849 B1 20100324 - Axial flow fan
Title (en)
Axial flow fan
Title (de)
Axiallüfter
Title (fr)
Ventilateur axial
Publication
Application
Priority
- KR 19990029802 A 19990722
- KR 19990029803 A 19990722
Abstract (en)
[origin: EP1070849A2] An axial flow fan for refrigerators is disclosed. In the axial flow fan of this invention, a hub(51) is mounted to the rotating shaft of a drive motor, with a plurality of blades(55) regularly fixed around the hub(51). A variety of designing factors of the blades, such as the number of blades, hub ratio, sweep angle, pitch angle and maximum camber ratio, are optimally designed to allow a smooth flow of cool air agreeable with both the large pressure loss and complex flow passage of refrigerators while accomplishing a reduction in air flow noise of the refrigerators. A vortex prevention means is provided on the concave back surface of the annular rim formed of the shroud for preventing discharged air from forming a vortex stream in back of the fan. <IMAGE>
IPC 8 full level
F04D 19/00 (2006.01); F04D 29/32 (2006.01); F04D 29/38 (2006.01); F04D 29/54 (2006.01); F04D 29/66 (2006.01); F25D 17/06 (2006.01)
CPC (source: EP)
F04D 29/325 (2013.01); F04D 29/384 (2013.01); F04D 29/547 (2013.01); F04D 29/666 (2013.01); F25D 2317/0681 (2013.01)
Designated contracting state (EPC)
DE GB IT
DOCDB simple family (publication)
EP 1070849 A2 20010124; EP 1070849 A3 20020717; EP 1070849 B1 20100324; DE 60044049 D1 20100506; JP 2001059499 A 20010306; JP 3469857 B2 20031125
DOCDB simple family (application)
EP 00114849 A 20000711; DE 60044049 T 20000711; JP 2000218758 A 20000714