Patent ID: 7780422

Claim:
An arrangement for pumping fluids that comprises: an electronically commutated external-rotor motor ( 20 ) having a stator ( 22 ) arranged on a stator carrier ( 34 ) and a rotor ( 26 ) joined to a first permanent magnet ( 67 ), which rotor is journaled in a bearing tube ( 30 ) rotatably relative to the stator, which bearing tube is arranged at least partly radially inside the stator carrier, the first permanent magnet ( 67 ) being arranged in an interstice between the stator carrier ( 34 ) and the bearing tube ( 30 ); a fluid pump ( 84 ) having a pump wheel ( 90 ) arranged rotatably inside a pump housing ( 86 ), which wheel is joined to a second permanent magnet ( 92 ), a liquid-tight but magnetically transparent partition ( 82 ) being provided between the first permanent magnet and the second permanent magnet, and the first permanent magnet ( 67 ) forming, by coaction with the second permanent magnet ( 92 ), a magnetic coupling for the fluid pump ( 84 ), which magnetic coupling produces, upon rotation of the rotor ( 26 ), a rotation of the pump wheel ( 90 ) of the fluid pump ( 84 ).