Washing method and washing machine

Abstract

Provided are a washing method and washing machine. In the washing method, an eco-rinsing process where a drum rotates in a state where at least a portion of laundry is pressed against the inner wall of the drum and wash water is sprayed into the drum is performed. A spinning process where the spraying of the wash water is stopped and the wash water is removed from the laundry by accelerating the drum is performed. Here, at least a portion of the laundry remains pressed against the wall of the drum in the eco-rinsing process and the spinning process.

1 . A washing method comprising:
 measuring a time that wash water takes to reach a target water level of a tub during a water supplying process;   calculating a flow rate of the wash water from the measured time; and   spraying the wash water into a drum for a time derived from the calculated flow rate of the wash water while the drum is rotated, such that at least a portion of laundry is pressed against an inner wall of the drum during an eco-rinsing process.   
     
     
         2 . The washing method of  claim 1 , wherein the measuring comprises supplying the wash water when a pre-valve is open. 
     
     
         3 . The washing method of  claim 1 , wherein the target water level is a level where the wash water does not reach the drum. 
     
     
         4 . The washing method of  claim 1 , further comprising measuring a time that wash water mixed with bleach takes to reach a target water level during washing,
 wherein the flow rate of the wash water mixed with bleach is calculated from the time measured during water supplying and the time measured during washing.   
     
     
         5 . The washing method of  claim 1 , wherein the flow rate of the wash water is calculated by dividing a volume of the wash water supplied into a tub at the target water level by the measured time. 
     
     
         6 . The washing method of  claim 1 , wherein the spraying comprises supplying the wash water when a second water supply valve is open. 
     
     
         7 . The washing method of  claim 1 , wherein the spraying comprises draining the wash water to an external side of the tub. 
     
     
         8 . The washing method of  claim 1 , further comprising accelerating the drum to remove the wash water from the laundry after stopping the spraying of the wash water. 
     
     
         9 . A washing machine comprising:
 a tub;   a drum disposed in the tub for rotating with laundry loaded therein;   a pre-valve for supplying wash water into the tub, wherein an open time of the pre-valve is measured; and   a second water supply valve for spraying wash water into the drum while the drum rotates, wherein an open time of the second water supply valve is calculated from the open time of the pre-valve.   
     
     
         10 . The washing machine of  claim 9 , wherein at least of a portion of the laundry is pressed against an inner wall of the drum by the rotation of the drum, when the second water supply valve is open. 
     
     
         11 . The washing machine of  claim 9 , wherein the pre-valve is opened for wash water to reach a target water level. 
     
     
         12 . The washing machine of  claim 9 , wherein the pre-valve is opened during a water supply process in a wash cycle. 
     
     
         13 . The washing machine of  claim 9 , further comprising a bleach valve for supplying wash water mixed with bleach into the tub, wherein an open time of the bleach valve is measured,
 wherein the second water supply valve is opened for a time calculated from the open time of the pre-valve and the open time of the bleach valve.   
     
     
         14 . The washing machine of  claim 13 , wherein the bleach valve is opened during a washing process in a wash cycle. 
     
     
         15 . The washing machine of  claim 9 , further comprising a pump configured to drain the wash water to an external side of the tub when the pre-valve is open.