Driven by the motor of industrial washing machine, the inner tube rotates in forward and reverse direction by belt speed change, so that water and clothing rotate asynchronously to be rubbed together, to achieve the purpose of cleaning. Recently, inverter is widely used in industry washing machine, especially in water washing equipments, which has brought a new technical revolution. It develops from the earliest unadjustable semi-automatic washing machine into automatic machine with four-steps speed, which configured with two double-speed motors, and finally into a modern new-type washing machine with multi-steps speed, which just need one motor to carry out variable frequency control.
2. Process Requirements
Industry Washing Machine require the VFD could provide high torque output, multi-steps speed, wide input voltage range, automatic slip compensation and convenient communication mode. On the one hand, VFD could adapt to various hotel environments of high temperature and high humidity. On the other hand, it must meet Industry Washing machine technological requirements and various clients’ requirements.
Speed given mode:
(1) By multi-steps speed mode. Set the operation speed of each step in inverter directly;
(2) By PC of washing machine. Set the operation speed of each step by communication mode.
The operation speed of each step:
Washing: 30rpm, uniform distribution: 60rpm, medium speed dehydration: 400rpm, high speed dehydration: 700~800rpm.
3. Solution of VEICHI Products
It adopts PLC logical sequential control and combines the multi-steps speed function of AC70, so that washing machine could adjust the speed of each period according to different clothing. AC70 slip speed control could effectively solve the excessive impact of traditional washing machine, and achieve energy saving to improve the service life of washing machine. The self-defined V/F curve makes the washing machine run smoothly; and the reasonable hardware design makes VFD adapt to washing environment of high temperature and high humidity.
The industry washing machine with VEICHI inverter could achieve steady and reliable operation, and gain high economic benefits for customers. And VEICHI overall solution is highly praised by customers through the actual production test. The specific advantages are as below:
(1) Stable start-up, lower current and lower noise, to improve the service life of washing machine;
(2) Obvious energy-saving effect and stable adjustment at real time;
(3) Automatic multi-steps speed adjustment to improve the washing effect;
(4) Could adapt to environment of high temperature and high humidity.