(19)
(11) EP 1 792 648 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 158(3) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
10.10.2007 Bulletin 2007/41

(43) Date of publication:
06.06.2007 Bulletin 2007/23

(21) Application number: 05783270.1

(22) Date of filing: 15.09.2005
(51) International Patent Classification (IPC): 
B01F 7/16(2006.01)
(86) International application number:
PCT/JP2005/017032
(87) International publication number:
WO 2006/033277 (30.03.2006 Gazette 2006/13)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

(30) Priority: 21.09.2004 JP 2004273582

(71) Applicant: Shi Mechanical & Equipment Inc.
Saijo-shi, Ehime, 7991393 (JP)

(72) Inventors:
  • YATOMI, Ryuichi, SHI MECHANICAL & EQUIPMENT INC.
    Saijo-shi, Ehime 7991393 (JP)
  • MORINAGA, Shoji, SHI MECHANICAL & EQUIPMENT INC.
    Saijo-shi, Ehime 7991393 (JP)

(74) Representative: Wablat, Wolfgang 
Patentanwalt Dr. Dr. Wolfgang Wablat Potsdamer Chaussee 48
14129 Berlin
14129 Berlin (DE)

   


(54) MIXER


(57) A mixer capable of developing suitable stirring characteristics by forming a sufficient vertical circulation flow over the entire part of the inside of a tank, wherein an opening (4) is formed in a stirring blade (3) under the following conditions: (i) the ratio of the opening area of the opening (4) in the upper half (U) of the stirring blade (3) to the overall area of the upper part (U) of the stirring blade (3) (the opening rate in the upper half (U) of the stirring blade (3)) is 45 to 80%, (ii) the ratio of the opening area of the opening (4) in the lower half (D) of the stirring blade to the overall area of the lower half (D) of the stirring blade (3) (the opening rate in the lower half (D) of the stirring blade (3)) is 18 to 50%, and (iii) the ratio of the opening rate in the lower half (D) of the stirring blade (3) to the opening rate in the upper half (U) of the stirring blade (3) is 31 to 71%.