Device for circulating washing water in washing machine

Abstract

A washing water circulating device in a washing machine includes a first tube connected to the tub, a water circulating pump connected to the first tube that pumps water from the tub, a second tube connected to the water circulating pump that supplies the pumped water to the tub, a bypass tube provided between the first tube and the second tube, and a control valve provided to the second tube, that guides the pumped water to one of the second tube and the bypass tube.

1 . A washing water circulating device in a washing machine comprising: 
 a water circulating portion that pumps water from an inside of a tub to an outside of the tub and supplies water into the tub; and    a flow passage control portion that keeps the pumped water circulating through the outside of the tub, or guides the pumped water into the tub.    
   
   
       2 . The device as claimed in  claim 1 , wherein the water circulating portion comprises; 
 a water circulating passage having both ends in communication with the tub, and    a water circulating pump connected to the water circulating passage.    
   
   
       3 . The device as claimed in  claim 1 , wherein the flow passage control portion comprises; 
 a bypass tube having both ends connected to a water circulating passage provided for a flow of the pumped water, and    a flow passage switching portion provided to the water circulating passage, the flow passage switching position guiding the pumped water to the bypass tube to circulate through the outside of the tub only or guiding the pumped water to the bypass tube and then guiding the pumped water to the tub.    
   
   
       4 . The device as claimed in  claim 1 , wherein the flow passage control portion makes the pumped water keep circulating through the outside of the tub, to dissolve detergent.  
   
   
       5 . A washing water circulating device in a washing machine comprising: 
 a first tube connected to a tub;    a water circulating pump connected to the first tube, the water circulating pump pumping water from the tub;    a second tube connected to the water circulating pump, the second tube supplying the pumped water to the tub;    a bypass tube provided between the first tube and the second tube; and    a control valve provided to the second tube, the control valve guiding the pumped water to one of the tub and the bypass tube.    
   
   
       6 . The device as claimed in  claim 5 , wherein the first tube is connected to a drain.  
   
   
       7 . The device as claimed in  claim 5 , wherein the first tube is connected to an under side of the tub.  
   
   
       8 . The device as claimed in  claim 5 , wherein the control valve is provided to a connection portion of the second tube and the bypass tube.  
   
   
       9 . The device as claimed in  claim 5 , wherein the control valve is provided between a connection portion of the second tube and the bypass tube.  
   
   
       10 . The device as claimed in  claim 5 , wherein the control valve guides the pumped water to the bypass tube for a preset time period at an initial stage of washing when detergent is supplied to the tub.  
   
   
       11 . The device as claimed in  claim 5 , wherein the control valve guides the pumped water to the tub after a preset time period set from a starting of washing is over.  
   
   
       12 . A washing machine comprising: 
 a cabinet having a door;    a tub mounted in the cabinet, the tub configured to hold water therein;    a drum rotatably mounted in an inside of the tub;    a water supplying device that supplies detergent and water to the tub; and    a washing water circulating device, wherein the washing water circulating device comprises: a first tube connected to the tub; a water circulating pump connected to the first tube, the water circulating pump pumping water from the tub; a second tube connected to the water circulating pump, the second tube supplying the pumped water to the tub; a bypass tube provided between the first tube and the second tube; and a control valve provided to the second tube, the control valve guiding the pumped water to one of the second tube and the bypass tube.    
   
   
       13 . The washing machine as claimed in  claim 12 , wherein the first tube is connected to a drain.  
   
   
       14 . The washing machine as claimed in  claim 12 , wherein the first tube is connected to an under side of the tub.  
   
   
       15 . The washing machine as claimed in  claim 12 , wherein the second tube sprays the pumped water to an inside of the drum.  
   
   
       16 . The washing machine as claimed in  claim 12 , wherein the control valve is provided to a connection portion of the second tube and the bypass tube.  
   
   
       17 . The washing machine as claimed in  claim 12 , wherein the control valve is provided between a connection portion of the second tube and the bypass tube and the tub.  
   
   
       18 . The washing machine as claimed in  claim 12 , wherein the control valve guides the pumped water to the bypass tube for a preset time period at an initial stage of washing when detergent is supplied to the tub.  
   
   
       19 . The washing machine as claimed in  claim 12 , wherein the control valve guides the pumped water to the tub after a preset time period set from a starting of washing is completed.  
   
   
       20 . The device as claimed in  claim 10 , wherein the preset time period is determined based on an amount of laundry and an amount of detergent.  
   
   
       21 . The device as claimed in  claim 11 , wherein the preset time period is determined based on an amount of laundry and an amount of detergent.  
   
   
       22 . The device as claimed in  claim 10 , wherein the preset time period is set regardless of an amount of laundry and an amount of detergent.  
   
   
       23 . The device as claimed in  claim 11 , wherein the preset time period is set regardless of an amount of laundry and an amount of detergent.  
   
   
       24 . The device as claimed in  claim 18 , wherein the preset time period is determined based on an amount of laundry and an amount of detergent.  
   
   
       25 . The device as claimed in  claim 19 , wherein the preset time period is determined based on an amount of laundry and an amount of detergent.  
   
   
       26 . The device as claimed in  claim 18 , wherein the preset time period is set regardless of an amount of laundry and an amount of detergent.  
   
   
       27 . The device as claimed in  claim 19 , wherein the preset time period is set regardless of an amount of laundry and an amount of detergent.