| 摘要 |
PROBLEM TO BE SOLVED: To enable a micropump to easily and accurately discharge a trace quantity of a fluid without requiring a valve capable of coping with the trace quantity of the fluid and a tube which has good inner diameter accuracy and can cope with various fluids.SOLUTION: The micropump 1 comprises a flexible tube 4 having a magnetic material 2, and a plurality of electromagnets 5 which are arranged at predetermined intervals in a longitudinal direction of the tube 4 to face the tube 4 and impart magnetic fields to the magnetic material 2. When the electromagnets 5 are excited sequentially, the magnetic material 2 and the electromagnets 5 repel each other on the opposite sides of the tube 4 so that the tube 4 is pressed and squeezed sequentially and the fluid in the tube 4 is sent out. Accordingly, the trace quantity of the fluid can be discharged easily and accurately without using a valve. As the tube 4 is changed in its shape by repulsive force received by the magnetic material 2, inner diameter accuracy of the tube does not matter and the tube can cope with various fluids. |
