EP 2058525 B1 20100428 - Impeller for a radial fan and radial fan
Title (en)
Impeller for a radial fan and radial fan
Title (de)
Rad für ein Radialgebläse und Radialgebläse
Title (fr)
Turbine de ventilateur radial et ventilateur radial
Publication
Application
Priority
EP 07425710 A 20071112
Abstract (en)
[origin: EP2058525A1] An impeller (2) for a radial fan (1) adapted to rotate about a rotation axis (A) comprises a plurality of main blades (25) that are sequentially arranged about such rotation axis (A), and having radially innermost inlet ends (32) and radially outermost outlet ends (33). Each of the main blades (25) comprises a concave main blade first surface (26) and a convex main blade second surface (27) opposite the main blade first surface (26) and facing the main blade first surface of the successive main blade. The main blade first surfaces (26) define main blade arcs (PP) which comprise a first (PP1), a second (PP2), a third (PP3), and a fourth (PP4) main blade circle arcs that are radially arranged from the inside to the outside of the impeller (2), and having a first (R1), a second (R2), a third (R3), and a fourth (R4) main blade radii of curvature, respectively. The main blade radii of curvature (R1, R2, R3, R4) have ratios in the following ranges: R2/R1=1-1.1; R3/R1=1.1-1.2; R4/R1=1.2-1.5.
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)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2058525 A1 20090513; EP 2058525 B1 20100428; AT E466195 T1 20100515; DE 602007006209 D1 20100610; RU 2008144614 A 20100520; RU 2492363 C2 20130910
DOCDB simple family (application)
EP 07425710 A 20071112; AT 07425710 T 20071112; DE 602007006209 T 20071112; RU 2008144614 A 20081111