Dishwasher

Abstract

A dishwasher includes a washing chamber and at least one spray arm rotatably mounted in the washing chamber. The at least one spray arm is provided with a plurality of nozzles, each configured to spray wash water in a respective spray jet. The plurality of nozzles are supplied with wash water by a pump. A flow obstacle is disposed in the spray arm upstream of a first nozzle of the plurality of nozzles and configured to change a geometry of the respective spray jet.

1 - 12 . (canceled) 
     
     
         13 . A dishwasher comprising:
 a washing chamber;   at least one spray arm rotatably mounted in the washing chamber, the at least one spray arm including a plurality of nozzles each configured to spray wash water in a respective spray jet, the plurality of nozzles being supplied with wash water by a pump; and   a flow obstacle disposed in the spray arm upstream of a first nozzle of the plurality of nozzles and configured to change a geometry of the respective spray jet.   
     
     
         14 . The dishwasher as recited in  claim 13 , wherein the spray arm includes a hollow member and the flow obstacle is disposed near an inner wall of the hollow member opposite the first nozzle. 
     
     
         15 . The dishwasher as recited in  claim 13 , wherein the flow obstacle extends into close proximity of an exit area of the respective spray jet at the first nozzle. 
     
     
         16 . The dishwasher as recited in  claim 13 , wherein the flow obstacle is movable relative to the first nozzle and disposed in a vicinity thereof. 
     
     
         17 . The dishwasher as recited in  claim 13 , wherein the plurality of nozzles are distributed, and further comprising a second flow obstacle associated with a second of the plurality of nozzles. 
     
     
         18 . The dishwasher as recited in  claim 13 , wherein the flow obstacle includes a peg having a rounded surface. 
     
     
         19 . The dishwasher as recited in  claim 13 , wherein the rounded surface includes a form of a hemisphere. 
     
     
         20 . The dishwasher as recited in  claim 13 , wherein the flow obstacle includes a V-shaped ramp. 
     
     
         21 . The dishwasher as recited in  claim 13 , wherein the flow obstacle includes a helix configured to swirl the wash water upstream of the first nozzle. 
     
     
         22 . The dishwasher as recited in  claim 13 , wherein the flow obstacle includes a pin projecting into an exit area of the respective spray jet at the first nozzle. 
     
     
         23 . The dishwasher as recited in  claim 13 , wherein the flow obstacle is adjustable in position relative to the first nozzle and disposed in a vicinity thereof. 
     
     
         24 . The dishwasher as recited in  claim 13 , wherein the flow obstacle is movably supported by a spring. 
     
     
         25 . The dishwasher as recited in  claim 13 , wherein the flow obstacle is associated with the first nozzle, and further comprising a second flow obstacle different than the flow obstacle and associated with a second nozzle of the plurality of nozzles.