EP 0900336 A1 19990310 - A FAN CENTRIFUGAL IMPELLER
Title (en)
A FAN CENTRIFUGAL IMPELLER
Title (de)
LAUFRAD EINES KREISELLÜFTERS
Title (fr)
ROUE CENTRIFUGE DE VENTILATEUR
Publication
Application
Priority
- SE 9700838 W 19970523
- SE 9602002 A 19960524
Abstract (en)
[origin: WO9745643A1] A fan centrifugal impeller, comprising: a backplate (3), shaped as a surface of revolution having as axis the impeller rotation axis (8), and being tangent along its external circle to a revolution cone (22) with a vertex angle ( alpha ) smaller than or equal to 160 DEG and preferably from 130 DEG to 110 DEG ; blades (2), mounted on the backplate having a leading edge (5) and a trailing edge (6), wherein the distance to the rotation axis (8), along the trailing edge remains substantially constant; a surface of revolution shaped shroud (1), having as axis the impeller rotation axis (8).
IPC 1-7
IPC 8 full level
F04D 29/28 (2006.01); F04D 29/30 (2006.01)
CPC (source: EP)
F04D 29/281 (2013.01); F04D 29/30 (2013.01)
Citation (search report)
See references of WO 9745643A1
Designated contracting state (EPC)
DE FR IT SE
DOCDB simple family (publication)
WO 9745643 A1 19971204; AU 2986397 A 19980105; EP 0900336 A1 19990310; SE 515523 C2 20010820; SE 9602002 D0 19960524; SE 9602002 L 19971125
DOCDB simple family (application)
SE 9700838 W 19970523; AU 2986397 A 19970523; EP 97924445 A 19970523; SE 9602002 A 19960524