| 摘要 |
PURPOSE:To provide a submerged variable speed pump where the heat radiation effect is large, and the remote operation of the variable speed control of a motor is easy. CONSTITUTION:A driving motor consists of a stator 1, a rotor 2 and a shaft 5, and a pump 3 is connected to the shaft. A driving unit 6 consisting of an inverter circuit, a control circuit, and a rotor position detecting sensor is installed inside the motor, and the power is supplied through a power cable 7, and the power is supplied to the motor. The driving signal from the outside may be the signal of the logic level of the power source of low voltage and small current because the inverter part and the control circuit are installed inside the submerged motor pump, the wiring cables need not be thick, and the remote operation of the variable speed control of the motor is easy. |
