EP 1029180 A1 20000823 - SIDE CHANNEL CENTRIFUGAL PUMP
Title (en)
SIDE CHANNEL CENTRIFUGAL PUMP
Title (de)
SEITENKANALKREISELPUMPE
Title (fr)
POMPE A CANAL LATERAL ET FLUX CIRCONFERENTIEL
Publication
Application
Priority
EP 9706236 W 19971110
Abstract (en)
[origin: WO9924719A1] The invention relates to a side channel centrifugal pump with a housing forming a side channel (1). The housing surface adjacent to the side channel forms a front face (13) adjoining the impeller. The transition edge (2, 3, 7) between the side channel (1) and the front face (13) is rounded in the areas where it deviates from the circumferential direction. In the front plane, the blades (16) of the impeller have a predetermined web width in the circumferential direction. According to the invention, the radius (15) of the transition edge (7) is greater than 0.25 (sec/m) times the product of web width x blade speed where the impeller blades (16) exit from the front face (13, 14) and overlap into the area of the side channel (1). This reduces cavitation tilting and noise.
IPC 1-7
IPC 8 full level
F04D 5/00 (2006.01)
CPC (source: EP US)
F04D 5/002 (2013.01 - EP US); F04D 5/007 (2013.01 - EP US); F05B 2250/503 (2013.01 - EP US); F05B 2260/96 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE
DOCDB simple family (publication)
WO 9924719 A1 19990520; AU 5320398 A 19990531; AU 738340 B2 20010913; CA 2306051 A1 19990520; CZ 20001268 A3 20011212; EP 1029180 A1 20000823; US 6296440 B1 20011002
DOCDB simple family (application)
EP 9706236 W 19971110; AU 5320398 A 19971110; CA 2306051 A 19971110; CZ 20001268 A 19971110; EP 97950152 A 19971110; US 52984500 A 20000420