Method and device for manufacturing nanofiber

A nano-fiber manufacturing apparatus, which includes:

• a nozzle block having a plurality of upward nozzles for upwardly discharging a polymer solution from outlets of the upward nozzles and a polymer solution supply channel for supplying the polymer solution to the upward nozzles;
• a collector arranged above the nozzle block;
• and a power supply for applying high voltage between the upward nozzles and the collector, and which is capable of field-emitting nano-fibers by discharging the polymer solution from the outlets of the plural upward nozzles while overflowing the polymer solution from the outlets of the plural upward nozzles, and at the same time, collecting the polymer solution overflowed from the outlets of the upward nozzles so as to the collected polymer solution as a raw material of nano-fibers, the nano-fiber manufacturing apparatus comprising:
• a polymer solution collecting channel formed in the nozzle block for collecting the polymer solution overflowed from the outlets of the upward nozzles;
• a raw material tank for storing the polymer solution which becomes the raw material of the nano-fibers;
• regeneration tanks adapted for regenerating the collected polymer solution and for storing the regenerated polymer solution;
• a middle tank for storing the polymer solution supplied from the raw material tank or the regeneration tank;
• a first transfer device for transferring the polymer solution from the polymer solution collecting channel of the nozzle block to the regeneration tank;
• a first transfer controller for controlling a transfer operation of the first transfer device;
• a second transfer device for transferring the polymer solution from the raw material tank and the regeneration tank to the middle tank;
• and
• a second transfer controller for controlling a transfer operation of the second transfer device.