| 摘要 |
PURPOSE: On a spinning device of thermoplastic synthetic fiber fine yarn, a cold air controlling method and a cold air controller are characterized by controlling flowing of a first cold air on a quenching zone, feeding a second cold air, controlling flowing of cold-air ascending current, having simple structure and being inexpensive. The cold air controlling method and the cold air controller are capable of preventing fluctuation of spinning conditions, increasing uniformity and elongation, increasing spinning velocity, spinning multi-products under the same conditions and controlling discharge of cold-air ascending current. CONSTITUTION: The cold air controlling device is comprised of: a condenser(30) installed on a lower part of the quenching zone using an inflow type device or a different cooling device; an accelerating tube(44) connected with a lower end of the condenser; a conical spin tube(50) connected with a lower end of the accelerating tube; and a second cold-air injecting device feeding the second cold air downward to an inner circumference of the accelerating tube. |
