Operating apparatus and method of a washing machine

Abstract

The operating apparatuses of a washing machine and the methods on that are renovated. The afore-mentioned washing machine is including: a memory that the reference signals are saved in order to operate a motor in a best condition according to each of the condition of the torque and noise; a control unit which generates the switching signals as calling the reference signals which are different each other according to the strokes of a washing machine, and comparing with the carrier signals; an inverter which generates a motor operating signal as an external power is switched by a switching signal; a motor which is rotated by a motor operating signal; and a revolving screen of a washing machine which is operated by a motor.

1 . An operating apparatus of a washing machine comprising; 
 a memory storing reference signals;    a control unit generating switching signals by calling out the reference signals based on a stroke of a washing machine and comparing the reference signals with the carrier signals;    an inverter generating motor driving signals by switching external power source according to the switching signals;    a motor being rotated according to the motor driving signals; and    a rotating body being rotated by the motor.    
   
   
       2 . The operating apparatus of  claim 1 , wherein the reference signals comprise at least reference signals for driving the motor in a two-phase mode and reference signals for driving the motor in a three-phase mode.  
   
   
       3 . The operating apparatus  claim 2 , wherein the reference signals for driving the motor in the three-phase mode have a sinusoidal waveform, and the reference signals for driving the motor in the two-phase mode have a chopped sinusoidal waveform.  
   
   
       4 . The operating apparatus of  claim 1 , wherein the rotating body is a drum for a washing machine.  
   
   
       5 . The operating apparatus of  claim 1 , wherein the laundering, rinsing and dehydrate strokes are progressed by the rotating body.  
   
   
       6 . The operating apparatus of  claim 1 , wherein the motor driving signals are two-phase or three-phase driving signals being determined according to the reference signals.  
   
   
       7 . The operating apparatus of  claim 1 , wherein the reference signals are previously stored as the forms of several look-up tables.  
   
   
       8 . The operating apparatus of  claim 1 , wherein the reference signals are called as different signals each other according to the strokes of the washing machine.  
   
   
       9 . The operating apparatus of  claim 8 , wherein the reference signals are called that the motor is operated as the three-phase driving mode in case that a stroke of a washing machine is a dehydrate stroke.  
   
   
       10 . The operating apparatus of  claim 8 , wherein the reference signals are called for driving the motor the three-phase mode in case that the stroke of a washing machine is a laundering and/or rinsing stroke.  
   
   
       11 . A operating method of a washing machine comprising a single rotating body being able to rotate in high speed and low speed on a condition that the laundry is contained, and a single motor rotating the single rotating body, comprising; 
 deciding a rotation request of the washing machine;    driving the single motor in a three-phase mode for a certain time period in case of the rotation request in high speed, in order to get a low noise; and    driving the single motor in a two-phase mode for a certain time period in case of the rotation request in low speed, in order to get a high torque.    
   
   
       12 . The method of  claim 11 , wherein the washing machine is a drum washing machine.  
   
   
       13 . The method of  claim 11 , wherein a stroke of the washing machine is a dehydrate stroke in case that the rotating body is in a high speed rotation.  
   
   
       14 . The method of  claim 11 , wherein a stroke of the washing machine is a laundering stroke and/or a rinsing stroke in case that the rotating body is in a low speed rotation.  
   
   
       15 . The method of  claim 11 , wherein the single motor is driven by an inverter.  
   
   
       16 . The method of  claim 15 , wherein a switching signal of the inverter is generated by the SPWM method in case that the rotating body is rotated in high speed.  
   
   
       17 . The method of  claim 15 , wherein a switching signal of the inverter is generated by the DPWM method in case that the rotating body is rotated in low speed.  
   
   
       18 . A operating method of a washing machine according a driving method of a motor, comprising; 
 driving a motor for a certain time period as a SPWM method to operate a rotating body in case that the rotating body which contains a laundry is rotated in high speed to drain the moisture of a laundry; and    driving a motor for a certain time period as a DPWM method to operate a rotating body in case that the rotating body which contains a laundry and water is rotated in low speed to remove the dirt on the laundry.    
   
   
       19 . A operating method of a washing machine according a rotating state of a drum, comprising; 
 deciding a stroke being progressed on a washing machine;    deciding a rotating state of the drum based on the decision of the stroke;    calling a reference signal generating a PWM signal;    comparing the reference signal with a carrier signal;    generating the PWM signal based on a result of the comparison and inputting the PWM signal into the inverter;    generating a motor driving signal using the inverter; and    rotating a motor based on the motor driving signal,    wherein the reference signals are different each other according to the rotating state of the drum.    
   
   
       20 . The operating method of  claim 19 , wherein the reference signal being called is suitable for a two-phase driving of a motor when a drum is rotated in high speed, and the reference signal being called is suitable for a three-phase driving of a motor when a drum is rotated in low speed.