EP 0399972 B1 19930421 - IMPELLER FOR ASEPTIC PURPOSES
Title (en)
IMPELLER FOR ASEPTIC PURPOSES
Publication
Application
Priority
SE 8901877 A 19890526
Abstract (en)
[origin: EP0399972A1] An impeller for aseptic purposes which is rotatable by inductive drive means in a predetermined direction within a vessel for stirring and mixing sterile fluids. The impeller (10) comprises a plurality of radially extending stirring blades (15) on an outer surface of the impeller and bearing means on an inner surface of said impeller for rotatably mounting the impeller on the vessel wall. The impeller is further provided with through-flow passages which outwardly extend from the inside of the impeller in a direction away from an axis of rotation, through orifices (25, 26) which are situated on the outer sr-face of the impeller immediately adjacent each blade (15), seen in said direction of rotation, so that cleaning fluid can be sucked through the passages due to a low pressure region occurring behind each blade.
IPC 1-7
IPC 8 full level
B01F 3/04 (2006.01); B01F 13/08 (2006.01); B01F 15/00 (2006.01)
CPC (source: EP)
B01F 33/453 (2022.01); B01F 33/4535 (2022.01); B01F 35/4112 (2022.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0399972 A1 19901128; EP 0399972 B1 19930421; AT E88374 T1 19930515; DE 69001388 D1 19930527; DE 69001388 T2 19931021; DK 0399972 T3 19930809; ES 2041522 T3 19931116; FI 902451 A0 19900517; FI 92475 B 19940815; FI 92475 C 19941125; NO 169326 B 19920302; NO 169326 C 19920610; NO 902321 D0 19900525; NO 902321 L 19901127; SE 463750 B 19910121; SE 8901877 D0 19890526; SE 8901877 L 19901127
DOCDB simple family (application)
EP 90850180 A 19900517; AT 90850180 T 19900517; DE 69001388 T 19900517; DK 90850180 T 19900517; ES 90850180 T 19900517; FI 902451 A 19900517; NO 902321 A 19900525; SE 8901877 A 19890526