EP 1640617 A2 20060329 - Free vortex pump
Title (en)
Free vortex pump
Title (de)
Freistrompumpe
Title (fr)
Pompe à tourbillon
Publication
Application
Priority
- CN 200420088569 U 20040924
- CN 200410052345 A 20041117
Abstract (en)
An electric water pump rotating in the correct direction, comprising a water pump body (2) that has a chamber (3), which is basically cylindrical in shape, and a chamber cover (8), which is fitted at the axial outward end of said chamber (3); an impeller (42) is accommodated and rotates inside said chamber (3) coaxially; said impeller (42) includes at least two impeller vanes (45) that project from the impeller disc surface (44) and said impeller vanes (45) bend to the same direction around the rotating axis OO' of said disc surface (44); Assuming V as the volume inside said chamber (3) and v as the volume enveloped by all the said impeller vanes (45) when said impeller (42) rotates, a design can be made about relations of geometrical parameters between volume of said chamber (3) in said electric water pump and said volume enveloped by all the impeller vane (45) rotating inside said chamber (3) to be in the following range, i.e., ratio between volume enveloped by all the said impeller vane (45) in rotation and volume of said chamber (3): v/V = 0.08 ˆ¼ 0.18
IPC 8 full level
F04D 29/22 (2006.01); F04D 29/42 (2006.01)
CPC (source: EP US)
F04D 29/2244 (2013.01 - EP US); F04D 29/426 (2013.01 - EP US)
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 MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR LV MK YU
DOCDB simple family (publication)
EP 1640617 A2 20060329; EP 1640617 A3 20120808; US 2006078447 A1 20060413
DOCDB simple family (application)
EP 05003526 A 20050218; US 7453405 A 20050308