Patent ID: 6536938
Filing Date: 2003-03-25
Classification: B01F,C12M,Y10S

Abstract:
A magnetically coupled microorganism culture apparatus, comprising:a container for holding microorganism culture medium liquid, said container having one or a plurality of gas outlets and an opening at a top of said container, each said outlet being covered by an air filtering film; a sealed filtering cap fixed over the container and covering said opening, said sealed cap having an inlet which is covered by an air filtering film; a hollow sucker placed through the sealed cap pointing downward into the container, which can rotate relative to the sealed cap and the container body; a hollow air impeller connected at a lower end of the sucker; which is in gaseous communication with said sucker; a driven magnet fastened to the upper end of the sucker; resisting structures fixed within the container near the impeller, for preventing the liquid in the container from generating an eddy flow; and two or more than two pairs of balancing inner magnetic rings and outer magnetic rings arranged close to a middle part of the sucker, wherein said inner magnetic rings are fastened to the outside wall of the sucker, and the outer magnetic rings are relatively fixed to the container, the outside walls of the inner magnetic rings and the inner wall of the outer magnetic rings have the same polarities and thus repel each other, thereby preventing the sucker from touching the container while rotating; when a rotary magnetic field is applied to said culture apparatus the driven magnet brings the sucker and then the impeller to rotate along with the driven magnet, thus sucking air which enters via the inlet and is filtered into the liquid by the centrifugal force so as to achieve an air exchange.