EP 0856109 A1 19980805 - IMPELLER AND BLOWER DEVICE COMPRISING SUCH AN IMPELLER
Title (en)
IMPELLER AND BLOWER DEVICE COMPRISING SUCH AN IMPELLER
Title (de)
LAUFRAD SOWIE GEBLÄSEEINRICHTUNG MIT EINEM DERARTIGEN LAUFRAD
Title (fr)
ROTOR ET SYSTEME DE SOUFFLANTE MUNI D'UN TEL ROTOR
Publication
Application
Priority
- DE 29614608 U 19960822
- EP 9604175 W 19960924
Abstract (en)
[origin: WO9807991A1] The invention concerns an impeller and a blower device comprising such an impeller, the impeller comprising a plurality of blade elements (1) which are disposed successively about a centre of rotation and have a front face and a rear face (3, 4). The base region of at least one of the blade elements (1) provided on the impeller has projections (2) extending over a surface defined by the rear face and/or front face (4, 3) of the blade. The impeller and the blower device are characterized by reduced noise emission.
IPC 1-7
IPC 8 full level
F04D 29/28 (2006.01); F04D 29/30 (2006.01); F04D 29/38 (2006.01); F04D 29/66 (2006.01); F04D 29/68 (2006.01)
CPC (source: EP)
F04D 29/283 (2013.01); F04D 29/30 (2013.01); F04D 29/384 (2013.01); F04D 29/667 (2013.01); F04D 29/681 (2013.01); F05D 2240/304 (2013.01)
Citation (search report)
See references of WO 9807991A1
Designated contracting state (EPC)
ES FR IT
DOCDB simple family (publication)
DE 29614608 U1 19961212; EP 0856109 A1 19980805; WO 9807991 A1 19980226
DOCDB simple family (application)
DE 29614608 U 19960822; EP 9604175 W 19960924; EP 96932595 A 19960924