Patent ID: 6632657
Filing Date: 2003-10-14
Classification: C12M,Y10S

Abstract:
An apparatus for cultivating tissue cells or microorganisms in suspension, comprisinga cylindrical reservoir, a cover for the cylindrical reservoir, branch pipes for supplying an aerating gas and removing gaseous medium and a device for aerating and stirring the gaseous medium, the device comprising a horizontal blade wheel secured on a vertical hollow shaft and arranged in an upper part of the reservoir directly under the cover, an annular partition installed in the cylindrical reservoir coaxially with the blade wheel with a clearance between the cylindrical wall of the reservoir and the annular partition, and a mechanism for stabilizing the position of the annular partition with respect to the surface of the cell suspension, said mechanism comprising guide elements and floats, the guide elements being formed as detachable blades including an upper blade and a lower blade having air foil shapes with a flat upper surface and a convex lower surface, the upper blade being attached by first struts to the annular partition and the lower blade being attached to the partition by second struts, the blades being provided with units for varying an angle of inclination of the blades with respect to an incoming flow of gas or liquid.