EP 1574716 B1 20080813 - Blower
Title (en)
Blower
Title (de)
Lüfter
Title (fr)
Ventilateur
Publication
Application
Priority
JP 2004061493 A 20040305
Abstract (en)
[origin: EP1574716A1] It is an object of the present invention to provide a blower having a plurality of blades (4) radially disposed between a hub (3) and a shroud (5), in which a separation region of air from a negative pressure surface of the blade (4) can further be reduced. An outer periphery of the negative pressure surface of the blade (4) is formed with a substantially half-wing shaped projection (8). Airflow which is once separated again adheres to the projection (8) and flows along the blade (4), turbulence on the discharge side is reduced, noise is reduced, and volume of air is increased. <IMAGE>
IPC 8 full level
F04D 29/28 (2006.01); F04D 29/30 (2006.01)
CPC (source: EP)
F04D 29/282 (2013.01); F04D 29/30 (2013.01); F05D 2240/304 (2013.01)
Designated contracting state (EPC)
ES IT
DOCDB simple family (publication)
EP 1574716 A1 20050914; EP 1574716 B1 20080813; CN 100485193 C 20090506; CN 1664376 A 20050907; ES 2309608 T3 20081216
DOCDB simple family (application)
EP 05004577 A 20050302; CN 200510053171 A 20050303; ES 05004577 T 20050302