Dishwasher comprising a microfilter

Abstract

The dishwasher ( 1 ) of the present invention comprises a washing tub ( 2 ) wherein items to be washed are placed, a receptacle ( 3 ) located at the lower portion of the washing tub ( 2 ), wherein the water in the washing tub ( 2 ) is collected during the washing process, a microfilter ( 5 ) located in the middle of the receptacle ( 3 ), which allows the passing of the water which passes from the washing tub ( 2 ) to the receptacle ( 3 ) but which holds the residues carried by the water, a circulation pump ( 4 ) which returns the water accumulated in the receptacle ( 3 ) to the washing tub ( 2 ), a suction hose ( 7 ) one end of which opens to the circulation pump ( 4 ), the other to the receptacle ( 3 ), a suction hole ( 9 ) to which the end of the suction hose ( 7 ) which opens into the receptacle ( 3 ) is mounted, and which opens to the receptacle ( 3 ) wall facing the microfilter ( 5 ) such that the water accumulated in the receptacle ( 3 ) can pass to the suction hose ( 7 ), and a supply hose ( 6 ) one end of which is connected to the mains and the other end of which opens to the receptacle ( 3 ).

1 . A dishwasher ( 1 ) comprising a washing tub ( 2 ) wherein items to be washed are placed, a receptacle ( 3 ) located at the lower portion of the washing tub ( 2 ), wherein the water in the washing tub ( 2 ) is collected during the washing process, a microfilter ( 5 ) located in the middle of the receptacle ( 3 ), which allows the passing of the water which passes from the washing tub ( 2 ) to the receptacle ( 3 ) but which holds the residues carried by the water, a circulation pump ( 4 ) which returns the water accumulated in the receptacle ( 3 ) to the washing tub ( 2 ), a suction hose ( 7 ) one end of which opens to the circulation pump ( 4 ), the other to the receptacle ( 3 ), a suction hole ( 9 ) to which the end of the suction hose ( 7 ) which opens into the receptacle ( 3 ) is mounted, and which opens to the receptacle ( 3 ) wall facing the microfilter ( 5 ) such that the water accumulated in the receptacle ( 3 ) can pass to the suction hose ( 7 ), and a supply hose ( 6 ) one end of which is connected to the mains and the other end of which opens to the receptacle ( 3 ) and a water inlet hole ( 8 ) to which the end of the supply hose ( 6 ) which opens into the receptacle ( 3 ) is mounted, which is located on the receptacle ( 3 ) wall, which faces the outer surface (DY) of the microfilter ( 5 ),—characterized by a control unit ( 10 )—which runs a washing program having various washing steps such as pre-washing, main washing, first rinsing, second rinsing and regeneration step which is applied when needed,—which provides, before or after any one of the washing steps, the water which is insufficient for washing or rinsing to be directed onto the microfilter ( 5 ) through the water inlet hole ( 8 ) and then to be discharged by the circulation pump ( 4 ). 
     
     
         2 . A dishwasher ( 1 ) as in  claim 1 , characterized by the control unit ( 10 ) which provides the said amount of water to be more than 0.5 liters and less than 1.5 liters. 
     
     
         3 . A dishwasher ( 1 ) as in  claim 1  or  2 , characterized by the control unit ( 10 ) which provides that an amount of water which is sufficient to fill the receptacle ( 3 ) up to a level above the microfilter ( 5 ) is used during the microfilter ( 5 ) washing process. 
     
     
         4 . A dishwasher ( 1 ) as in any one of the above claims, characterized by the control unit ( 10 ) which realizes the microfilter ( 5 ) washing process after the main washing step. 
     
     
         5 . A dishwasher ( 1 ) as in any one of the above claims, characterized by the control unit ( 10 ) which realizes the microfilter ( 5 ) washing process before the main washing step. 
     
     
         6 . A dishwasher ( 1 ) as in any one of the above claims, characterized by the control unit ( 10 ) which realizes the microfilter ( 5 ) washing process before the rinsing step. 
     
     
         7 . A dishwasher ( 1 ) as in any one of the above claims, characterized by the control unit ( 10 ) which operates also the circulation pump ( 4 ) simultaneously while water is directed onto the microfilter ( 5 ) through the water inlet hole ( 8 ). 
     
     
         8 . A dishwasher ( 1 ) as in  claim 1 , characterized by a water inlet hole ( 8 ) in nozzle form narrowing towards the inside of the receptacle ( 3 ).