Water supply apparatus and method of drum-type washing machine

Abstract

An water supply apparatus and its method of a drum-type washing machine includes a rotation pump for rotating washing water supplied into a tub, and a spray nozzle for spraying washing water supplied from the rotation pump into the drum.

1 . A water supply apparatus of a drum-type washing machine comprising: 
 a rotation pump for rotating washing water supplied into a tub of a drum-type washing machine; and    a spray nozzle for spraying washing water supplied from the rotation pump into the drum.    
   
   
       2 . The apparatus of  claim 1 , wherein the rotation pump comprises: 
 an outflow tube through which washing water which has been supplied into the tub is flowed out; and    a rotation tube through which the washing water which has been flowed out is supplied to the spray nozzle.    
   
   
       3 . The apparatus of  claim 1 , wherein the washing water is supplied as much as a predetermined water level.  
   
   
       4 . The apparatus of  claim 3 , wherein the predetermined water level is from the lowest end portion of the tub to the lowest end portion of the drum.  
   
   
       5 . The apparatus of  claim 1 , wherein the spray nozzle is installed at a predetermined region of an upper end portion of the inside the drum.  
   
   
       6 . A water supply method of a drum-type washing machine comprising: 
 supplying washing water into a tub of a drum-type washing machine up to a predetermined upper water level;    rotating the supplied washing water through a rotation pump; and    terminating the washing water supply when a state that a water level of the washing water is higher than a predetermined lower water level is maintained for a predetermined time.    
   
   
       7 . The method of  claim 6 , wherein the predetermined upper water level is from the lowest end portion of the tub to the lowest end portion of the drum.  
   
   
       8 . The method of  claim 6 , wherein the predetermined lower water level is less than the predetermined upper water level.  
   
   
       9 . The method of  claim 6 , wherein said terminating comprises: 
 comparing a water level of the washing water and the predetermined lower water level;    checking whether the predetermined time elapses when the water level of the washing water is higher than the predetermined lower water level; and    terminating the washing water supply when the predetermined time elapses.    
   
   
       10 . The method of  claim 9 , wherein said comparing comprises: 
 supplying washing water when the water level of the washing water is lower than the predetermined lower water level.    
   
   
       11 . The method of  claim 9 , wherein said checking comprises: =
 rotating washing water within the predetermined time.