A dishwasher with improved spraying means

Abstract

A dishwasher comprising a washing chamber for receiving dishes, and a spray arrangement stationary in the washing chamber, where the spray arrangement is configured to generate a spray of liquid, and comprises a conduit for supplying liquid. The spray arrangement comprises a movable arrangement provided with first and second nozzle members arranged to provide different patterns of the spray of liquid. Each nozzle member comprises a nozzle outlet and a nozzle inlet for fluid communication with an outlet of the conduit. The movable arrangement is arranged in relation to the outlet of the conduit so that it is movable between first and second positions. The nozzle inlet of the first nozzle member is in fluid communication with the outlet of the conduit in the first position, and the nozzle inlet of the second nozzle member is in fluid communication with the outlet of the conduit in the second position.

1 . A dishwasher for washing dishes, the dishwasher comprising
 a washing chamber for receiving the dishes, and   a spray arrangement arranged stationary in the washing chamber, where the spray arrangement is configured to generate a spray of liquid, wherein the spray arrangement comprises a conduit for supplying liquid,   wherein the spray arrangement comprises a movable arrangement provided with at least a first and a second nozzle member arranged to provide different patterns of the spray of liquid,   wherein each nozzle member comprises a nozzle outlet and a nozzle inlet for fluid communication with an outlet of the conduit,   wherein the movable arrangement is arranged in relation to the outlet of the conduit so that the movable arrangement is movable between a first and a second position,   wherein the nozzle inlet of the first nozzle member is in fluid communication with the outlet of the conduit in the first position, and wherein the nozzle inlet of the second nozzle member is in fluid communication with the outlet of the conduit in the second position.   
     
     
         2 . The dishwasher according to  claim 1 , wherein the movable arrangement is rotatable, and wherein the movable arrangement is arranged in relation to the outlet of the conduit so that the movable arrangement is rotatable between the first and the second positions. 
     
     
         3 . The dishwasher according to  claim 2 , wherein the first and second nozzle members are circumferentially distributed on the movable member around a first rotation axis (A 1 ) of the movable arrangement. 
     
     
         4 . The dishwasher according to  claim 1 , wherein the first and second positions are fixed in place relative to the conduit by a snap fit mechanism. 
     
     
         5 . The dishwasher according to  claim 1 , wherein the spray arrangement is arranged at a bottom surface of the washing chamber and is configured to generate the spray of liquid towards a top surface of washing chamber, where the top surface is opposite the bottom surface. 
     
     
         6 . The dishwasher according to  claim 1 , wherein the movable arrangement is further arranged to provide a closing position arranged to block the supply of liquid from the outlet of the conduit, wherein the movable arrangement is arranged in relation to the outlet of the conduit so that the movable arrangement is movable between the first position, the second position, and the closing position. 
     
     
         7 . The dishwasher according to  claim 1 , wherein the different patterns of the spray of liquid have different conical shapes. 
     
     
         8 . The dishwasher according to  claim 1 , wherein at least one pattern of the spray of liquid is a rotating pattern. 
     
     
         9 . The dishwasher according to  claim 1 , further comprising one or more rotatable arms arranged rotatable about a second rotation axis (A 2 ) in the washing chamber, where each rotatable arm comprises means for spraying liquid. 
     
     
         10 . The dishwasher according to  claim 9 , wherein at least one rotatable arm is arranged in connection to the spray arrangement to periodically interrupt the spray of liquid of the spray arrangement when the at least one rotatable arm is rotating. 
     
     
         11 . The dishwasher according to  claim 9 , further comprising a support arrangement provided in the washing chamber, wherein the support arrangement is configured to support the one or more rotatable arms, and wherein the spray arrangement is fixedly connected to the support arrangement. 
     
     
         12 . The dishwasher according to  claim 1 , wherein the conduit is rigid. 
     
     
         13 . The dishwasher according to  claim 1 , wherein the first nozzle member has a different internal geometry of a through hole connecting its nozzle outlet and nozzle inlet from a corresponding internal geometry of the second nozzle member.