Dishwasher and method of controlling the dishwasher

Abstract

A dishwasher includes: a tub, a water storage chamber provided under the tub and configured to store water from inside the tub, a filter disposed in the water storage chamber and configured to filter water flowing into the water storage chamber, a drain pump configured to discharge the water accommodated in the water storage chamber to the outside, and a controller including at least one processor, comprising processing circuitry. The controller may be configured to control the drain pump to discharge the water accommodated in the water storage chamber to the outside based on the lapse of a specified soaking time after completion of a water supply operation or a jet operation.

What is claimed is: 
     
         1 . A dishwasher comprising:
 a tub;   a water storage chamber provided under the tub and configured to store water from inside the tub;   a filter disposed in the water storage chamber and configured to filter water flowing into the water storage chamber;   a drain pump configured to discharge the water accommodated in the water storage chamber to the outside; and   a controller including at least one processor, comprising processing circuitry, configured to control the drain pump to perform a drain operation of discharging the water accommodated in the water storage chamber to the outside based on a lapse of a specified soaking time after completion of a water supply operation of supplying water into the water storage chamber or a jet operation of jetting water into the tub.   
     
     
         2 . The dishwasher of  claim 1 , wherein the controller is configured to cause the dishwasher to perform the drain operation based on the lapse of the specified soaking time after completion of the water supply operation or the jet operation in the last of multiple rinsing processes. 
     
     
         3 . The dishwasher of  claim 1 , further comprising: a user interface configured to receive a user input,
 wherein the controller is configured to cause the dishwasher to:   perform the water supply operation or the jet operation based on an input to select a filter soaking mode being obtained from a user through the user interface; and   perform the drain operation based on the lapse of the specified soaking time after completion of the water supply operation or the jet operation.   
     
     
         4 . The dishwasher of  claim 1 , wherein the controller is configured to
 count non-use time from a point in time at which the dishwasher is last used; and   cause the dishwasher to: perform the water supply operation or the jet operation based on the non-use time elapsing a preset reference time; and   the drain operation based on the lapse of the specified soaking time after completion of the water supply operation or the jet operation.   
     
     
         5 . The dishwasher of  claim 1 , further comprising:
 a heater configured to heat the water accommodated in the water storage chamber; and   a circulation pump configured to pump the water accommodated in the water storage chamber,   wherein the controller is configured to operate the heater and the circulation pump for a specified heating time during the specified soaking time.   
     
     
         6 . The dishwasher of  claim 1 , further comprising:
 a circulation pump configured to pump the water accommodated in the water storage chamber;   a flow path configured to guide the water pumped by the circulation pump to the water storage chamber;   a valve configured to open or close the flow path; and   a cleaning nozzle configured to communicate with the water storage chamber and provided to jet the water guided through the flow path toward the filter.   
     
     
         7 . The dishwasher of  claim 6 , wherein the controller is configured to operate the circulation pump and open the valve such that water is jetted from the cleaning nozzle toward the filter for a specified cleaning time before operating the drain pump after the lapse of the specified soaking time. 
     
     
         8 . The dishwasher of  claim 7 , further comprising: a filter motor configured to rotate the filter,
 wherein the controller is configured to operate the filter motor to rotate the filter before operating the drain pump after the lapse of the specified soaking time.   
     
     
         9 . The dishwasher of  claim 7 , wherein the controller is configured to stop operating the circulation pump, close the valve and operate the drain pump based on the lapse of the specified cleaning time. 
     
     
         10 . The dishwasher of  claim 6 , wherein the cleaning nozzle is configured to jet water toward an outer surface of the filter opposite to an inner surface of the filter on which debris is collected. 
     
     
         11 . The dishwasher of  claim 6 , wherein:
 the flow path is a first flow path,   the valve is a first valve,   the cleaning nozzle is a first cleaning nozzle,   the dishwasher further comprises a second flow path distinguished from the first flow path and configured to guide the water pumped by the circulation pump to the water storage chamber;   a second valve configured to open or close the second flow path; and   a second cleaning nozzle configured to communicate with the water storage chamber and configured to jet the water guided through the second flow path toward the filter.   
     
     
         12 . The dishwasher of  claim 11 , wherein:
 the first cleaning nozzle comprises a first slit, and   the second cleaning nozzle comprises a second slit disposed above at least a portion of the first slit.   
     
     
         13 . The dishwasher of  claim 11 , wherein the controller is configured to, before operating the drain pump after the lapse of the specified soaking time:
 open one of the first valve and the second valve and close the other one of the first valve and the second valve during a specified first cleaning time, and   close one of the first valve and the second valve and open the other one of the first valve and the second valve during a specified second cleaning time based on the lapse of the specified first cleaning time.   
     
     
         14 . The dishwasher of  claim 6 , wherein:
 the flow path is a first flow path,   the valve is a first valve,   the dishwasher further comprises a jet device configured to jet water toward an object to be washed disposed in the tub;   a distribution chamber separated from the water storage chamber and including a second flow path configured to guide the water pumped by the circulation pump to the jet device; and   a second valve configured to open or close the second flow path, and   the controller is configured to:   open the first valve and close the second valve to perform the water supply operation or the jet operation.   
     
     
         15 . The dishwasher of  claim 1 , further comprising: a user interface comprising circuitry configured to display information about the dishwasher,
 wherein the controller is configured to operate the drain pump and control the user interface to provide a filter cleaning notification, based on the lapse of the specified soaking time.