Dishwasher and controlling method thereof

Abstract

Disclosed a controlling method of a dishwasher comprising a water supply step for supplying wash water, a preliminary washing step for injecting the wash water to one or more dishes, a main washing step for injecting the wash water mixed with washing liquid to the dishes, a rinsing step for injecting the wash water to the dishes, and a heating step for heating the wash water in one or more of the preliminary washing step, the main washing step and he rinsing step, wherein a heater sensing step for determining an operational state of a heater heating the wash water is performed in the heating step in a state where the circulation of wash water is stopped.

What is claimed is: 
     
         1 . A dishwasher controlling method comprising:
 a water supply step of supplying wash water to a dishwasher;   a washing step of washing one or more dishes using the supplied wash water;   a rinsing step of rinsing the washed dishes;   a drying step of drying the rinsed dishes, and   a dry maintaining step of intermittently drying the dishes to maintain a dried state of the dishes.   
     
     
         2 . The controlling method of  claim 1 , wherein the washing step comprises:
 a preliminary washing step of soaking food scraps or contaminants stuck on the dishes; and   a main washing step of separating the food scraps or contaminants from the dishes.   
     
     
         3 . The controlling method of  claim 1 , further comprising:
 a dry maintaining step of determining selection of the dry maintaining step after the drying step.   
     
     
         4 . The controlling method of  claim 1 , wherein the dry maintaining step intermittently operates a drying module of the dishwasher for a preset time period. 
     
     
         5 . The controlling method of  claim 4 , wherein the operation time of the drying module comprises a preset pause time and a preset duration time of the drying module which is shorter than the pause time. 
     
     
         6 . The controlling method of  claim 1 , wherein the dry maintaining step ends based on determination of the drying module operation ending condition. 
     
     
         7 . The controlling method of  claim 6  wherein the drying module operation ending condition comprises one of a user's operation ending input, opening of a door, and starting of another washing course. 
     
     
         8 . A dishwasher comprising:
 a washing tub in which one or more dishes are placed;   a storage unit;   a driving unit provided in the washing tub and injecting wash water to the storage unit;   a door opening/closing the washing tub and comprising a drying module for drying the dishes; and   a controller intermittently operating the drying module for a preset time period to maintain a dried state of the dishes placed in the washing tub.   
     
     
         9 . The dishwasher of  claim 8 , wherein the controller operates the drying module after washing, rinsing, and drying steps for the dishes to maintain the dried state of the dishes. 
     
     
         10 . The dishwasher of  claim 8 , wherein the door comprises:
 a manipulation unit for controlling the dishwasher,   wherein the manipulation unit comprises:   a dry maintaining step for intermittently operating the drying module for a preset time period.   
     
     
         11 . The dishwasher of  claim 8 , wherein the door comprises:
 a display unit displaying an operational state of the dishwasher,   wherein the display unit comprises a dry maintaining lamp displaying that the drying module is intermittently operated for a preset time period.