Operating method for washing machine

Abstract

The present invention relates to an operation method of a washing machine for controlling the rotation of a pulsator to enhance cleaning performance, there is provided a method of operating a washing machine having a pulsator rotatably provided in a tub, and the method may include a first cleaning mode having a first process of rotating the pulsator in one direction at a first angle and then rotating it in the other direction at a second angle around the rotation shaft; and a second process of rotating the pulsator in the one direction at a third angle and then rotating it in the other direction at a fourth angle around the rotation shaft, wherein the first angle is greater than the third angle, and the second angle is greater than the fourth angle, and the second angle is greater than the third angle.

1 . A method of operating a washing machine having a pulsator rotatably provided in a tub, the method comprising:
 a first cleaning mode having a first process of rotating the pulsator in one direction with a first angle and then rotating it in the other direction with a second angle around the rotation shaft; and   a second process of rotating the pulsator in the one direction with a third angle and then rotating it in the other direction with a fourth angle around the rotation shaft,   wherein the first angle is greater than the third angle, and the second angle is greater than the fourth angle, and the second angle is greater than the third angle.   
     
     
         2 . The method of  claim 1 , wherein the first angle is equal to the second angle, and the third angle is equal to the fourth angle. 
     
     
         3 . The method of  claim 2 , wherein the first or the second angle is at least two times greater than the third and the fourth angle, respectively. 
     
     
         4 . The method of  claim 1 , wherein the first cleaning mode alternately implements the first and the second process at least twice. 
     
     
         5 . The method of  claim 1 , further comprising:
 a second cleaning mode in which the pulsator alternately performs forward and reverse rotations with a previously set general angle around the rotation shaft,   wherein the first and the second angle are greater than the general angle, and the third and the fourth angle are less than the general angle.   
     
     
         6 . The method of  claim 5 , wherein the second cleaning mode is implemented at least twice, and
 the first cleaning mode is implemented between the second cleaning modes being implemented at least twice.   
     
     
         7 . The method of  claim 5 , wherein the first and the second cleaning mode are alternately implemented by plural times. 
     
     
         8 . The method of  claim 5 , wherein the rotation of the pulsator with the first and second angle during the first process generates a stronger twist to cleaning objects than that of the general angle by the rotation of water flows, and the rotation of the pulsator with the third and fourth angle during the second process generates a weaker twist to cleaning objects than that of the general angle by the rotation of water flows. 
     
     
         9 . The method of  claim 6 , wherein the first and the second angle are 990°, and the third and the fourth angle are 495°, and the general angle is 720°. 
     
     
         10 . The method of  claim 1 , further comprising:
 a third cleaning mode having a first circulation process of rotating the pulsator with a fifth angle in one direction around the rotation shaft;   an idle process of suspending the rotation of the pulsator for a predetermined period of time subsequent to the first circulation process; and   a second circulation process of rotating the pulsator with a sixth angle in the other direction around the rotation shaft subsequent to the idle process,   wherein the idle process prevents a twist of cleaning objects caused by the rotation of water flows, and   the first and the second circulation process circulates cleaning objects without causing a twist by the idle process.   
     
     
         11 . The method of  claim 1 , further comprising:
 a fourth cleaning mode having a first rotation process of rotating the pulsator with a seventh angle in one direction around the rotation shaft; and   a second rotation process of rotating the pulsator with an eighth angle in the other direction around the rotation shaft,   wherein the seventh angle is greater than the eighth angle, and   the first and the second rotation process are alternately repeated at least twice to change the position and posture of cleaning objects in the tub.   
     
     
         12 . The method of  claim 1 , further comprising:
 a speed variation mode of varying a speed from a first speed to a second speed to rotate the pulsator in one direction around the rotation shaft,   wherein the second speed is greater than the first speed, and   the first speed is a speed at which cleaning water inside the tub forms water flows to circulate cleaning objects, and   the second speed is a speed at which cleaning water within the tub goes up along an inner wall of the tub and then falls down to a side of cleaning objects within the tub by a centrifugal force.   
     
     
         13 . A method of operating a washing machine having a pulsator rotatably provided in a tub, the method comprising:
 a first cleaning mode having a first process of allowing cleaning objects to be strongly rubbed by a strong twist within the tub by the rotation of water flows generated by rotating the pulsator in one direction and then rotating it in the other direction around the rotation shaft; and   a second process of allowing cleaning objects to be weakly rubbed by a weak twist within the tub by the rotation of water flows generated by rotating the pulsator in one direction and then rotating it in the other direction around the rotation shaft.   
     
     
         14 . A method of operating a washing machine having a pulsator rotatably provided in a tub, the method comprising:
 a divisional rotation mode having a first divisional rotation process of rotating the pulsator with a first end angle in one direction around the rotation shaft; and   a second divisional rotation process of rotating the pulsator with a second end angle in the other direction,   wherein the first divisional rotation process divides the first end angle into at least two angles to rotate the pulsator, and   the second divisional rotation process divides the second end angle into at least two angles to rotate the pulsator.   
     
     
         15 . The method of  claim 14 , wherein the first divisional rotation process divides the first end angle into equal angles. 
     
     
         16 . The method of  claim 14 , wherein the second divisional rotation process divides the second end angle into equal angles. 
     
     
         17 . The method of  claim 14 , wherein the first end angle is equal to the second end angle. 
     
     
         18 . The method of  claim 14 , wherein a division of the first and the second end angle is implemented by suspending the rotation of the pulsator. 
     
     
         19 . The method of  claim 14 , wherein the first and the second end angle are 1440°, and the first and the second divisional rotation process divide the first and the second end angle into two equal angles to rotate the pulsator, or
 the first and the second end angle are 2160°, and the first and the second divisional rotation process divide the first and the second end angle into three equal angles to rotate the pulsator. 
 
     
     
         20 . A method of operating a washing machine having a pulsator rotatably provided in a tub, the method comprising:
 a divisional rotation mode having a first divisional rotation process of allowing cleaning objects accommodated in the tub to be rubbed by a twist by water flows generated by divisionally rotating the pulsator in one direction, and   a second divisional rotation process of allowing cleaning objects accommodated in the tub to be rubbed by a twist by water flows generated by divisionally rotating the pulsator in the other direction,   wherein the first divisional rotation process divisionally rotates the cleaning objects with at least two angles to intermittently cause rubbing received by twisting the cleaning objects, and   the second divisional rotation process divisionally rotates the cleaning objects with at least two angles to intemittently cause rubbing received by twisting the cleaning objects.