| 摘要 |
PURPOSE:The titled device in which a singnal of yarn break detection switches the pole change motor to the high-speed rotation to give the flute a strong suction, whereby the structure is simplified and the power consumption is reduced. CONSTITUTION:As a pole change motor, is used a low-voltage three-phase squirrel- cage induction motor that can be switched in two stages to change the rotation of fan 7 so that different suctions are applied to the flute 3. When the yarn-break detector 12 detects yarn break, the circuit for driving motor 6 is switched from the connection (a) to the other connection (b) to make the motor 6 high-speed rotation to give high suction to the flute 3. |
