Dishwasher

Abstract

A dishwasher according to an embodiment includes a tub, a basket arrangeable within the tub to receive dishware, a spraying device including a spray rotor rotatable by spraying washing water to wash the dishware, a duct including a duct body configured to allow washing water to flow, a duct bearing configured to rotatably support the spray rotor and supply washing water from the duct body to the spray rotor, and a duct holder configured to rotatably support the spray rotor together with the duct bearing, wherein the spray rotor includes a nozzle body rotatably coupleable to the duct bearing and configured to be supplied with washing water from the duct bearing, and a base body supported by the duct holder and coupleable to the nozzle body enabled to receive the washing water flowing into the nozzle body.

1 . A dishwasher comprising:
 a tub;   a basket in the tub and configured to receive dishware;   a sprayer including a spray rotor, wherein the spray rotor includes:
 a nozzle body, and 
 a base body coupled to the nozzle body so that the base body and the nozzle body together form a space; and 
   a duct including:
 a duct body in which washing water is flowable, 
 a duct bearing to which the nozzle body is rotatably coupled, wherein the duct bearing is configured to supply washing water flowing in the duct body from the duct body to the space formed by the base body and the nozzle body, and 
 a duct holder that supports the base body so that the duct holder, together with the duct bearing, rotatably supports the spray rotor, and so that the washing water supplied to the space formed by the base body and the nozzle body is sprayed by the spray rotor toward the basket to wash dishware received in the basket. 
   
     
     
         2 . The dishwasher of  claim 1 , wherein the duct holder includes a support bearing facing the duct bearing and having a section whose cross-sectional area decreases as the support bearing approaches the base body. 
     
     
         3 . The dishwasher of  claim 2 , wherein
 the duct holder further includes an extension portion extending along a protruding direction of the duct bearing from the duct body, and a holder portion bent from the extension portion, and   the support bearing is at an end of the holder portion.   
     
     
         4 . The dishwasher of  claim 1 , wherein the spray rotor includes a nozzle to spray the washing water in the space formed by the base body and the nozzle body toward the basket to wash dishware received in the basket. 
     
     
         5 . The dishwasher of  claim 4 , wherein the nozzle includes a propulsion nozzle on an outer circumferential surface of the spray rotor. 
     
     
         6 . The dishwasher of  claim 5 , wherein the nozzle further includes an upper nozzle formed in the nozzle body and configured to spray washing water in a direction different from a direction in which washing water is sprayed by the propulsion nozzle. 
     
     
         7 . The dishwasher of  claim 1 , wherein the nozzle body includes a nozzle portion having a flow path with a cross-sectional area of a size corresponding to a cross-sectional area of a flow path of the duct bearing so as to form a distribution flow path together with the duct bearing. 
     
     
         8 . The dishwasher of  claim 7 , wherein the duct body includes a curved portion to prevent a decrease in a flow rate of the washing water flowing from the duct body to a flow path of the duct bearing. 
     
     
         9 . The dishwasher of  claim 7 , wherein the nozzle portion is configured so that the cross-sectional area of the flow path of the nozzle portion increases as the nozzle portion is further away from the duct bearing. 
     
     
         10 . The dishwasher of  claim 9 , wherein the nozzle portion includes a sealing portion surrounding the duct bearing to prevent washing water from flowing out between the nozzle portion and the duct bearing. 
     
     
         11 . The dishwasher of  claim 1 , wherein the duct holder includes an elastic material so as to be elastically deformable while the nozzle body is being coupled to the duct bearing and the base body is being positioned to be supported by the duct holder. 
     
     
         12 . The dishwasher of  claim 1 , wherein
 the basket includes a bottom portion configured to support the dishware, and   the duct body is on an upper side of the bottom portion.   
     
     
         13 . The dishwasher of  claim 12 , wherein the bottom portion includes:
 an inclined support portion configured to support the dishware so as to be inclined downwardly, and   a duct support portion connected to the inclined support portion and having the duct body seated thereon.   
     
     
         14 . The dishwasher of  claim 13 , wherein the spray rotor is on a lower side of the duct body to spray washing water onto dishware supported on the inclined support portion. 
     
     
         15 . The dishwasher of  claim 1 , wherein the dishwasher includes a plurality of the duct bearings and a plurality of the duct holders arranged at predetermined intervals along a direction along which the duct body longitudinally extends,
 the dishwasher includes a plurality of the spray rotors, and   the duct holders of the plurality of duct holders, together with the duct bearings of the plurality of duct bearings, support spray rotors of the plurality of the spray rotors, respectively.