Systems for main conduit outlets in dishwasher appliances

Abstract

A dishwasher appliance includes a tub defining a wash chamber and a wash conduit disposed in the wash chamber on a rear wall of the tub. A third rack assembly is slidably positioned in the wash chamber above a second rack assembly with a third spray assembly positioned within the third rack assembly. The third spray assembly is configured to direct wash fluid at articles located in the third rack assembly. The third spray assembly includes an inlet nozzle at one end. The inlet nozzle is offset from the wash conduit outlet in the lateral direction. A portion of the wash conduit extends along the vertical direction between the second and third rack assemblies.

What is claimed is: 
     
         1 . A dishwasher appliance defining a vertical direction, a lateral direction, and a transverse direction, the vertical, lateral, and transverse directions being mutually perpendicular, the dishwasher appliance comprising:
 a tub defining a wash chamber;   a wash conduit disposed in the wash chamber on a rear wall of the tub;   a first rack assembly slidably positioned within the wash chamber;   a first spray assembly positioned in the wash chamber and configured to direct wash fluids at the first rack assembly;   a second rack assembly slidably positioned in the wash chamber above the first rack assembly;   a second spray assembly positioned in the wash chamber and configured to direct wash fluids at the second rack assembly;   a third rack assembly slidably positioned in the wash chamber above the second rack assembly; and   a third spray assembly positioned within the third rack assembly and configured to direct wash fluid at articles located in the third rack assembly, the third spray assembly comprising an inlet nozzle at one end, the inlet nozzle offset from the wash conduit in the lateral direction,   wherein a portion of the wash conduit extends along the vertical direction between the second and third rack assemblies.   
     
     
         2 . The dishwasher appliance of  claim 1 , wherein a conduit connector is connected between the inlet nozzle of the third spray assembly and an outlet of the wash conduit such that the wash fluid is flowable from the outlet of the wash conduit to the inlet nozzle of the third spray assembly through the conduit connector. 
     
     
         3 . The dishwasher appliance of  claim 2 , further comprising a check valve within the conduit connector. 
     
     
         4 . The dishwasher appliance of  claim 3 , wherein the check valve comprises a flap configured to rotate about the lateral direction and extend in one or more of the transverse direction and vertical direction. 
     
     
         5 . The dishwasher appliance of  claim 4 , wherein the inlet nozzle of the third spray assembly engages the flap of the check valve when the third rack assembly is retracted within the wash chamber in order to open the check valve. 
     
     
         6 . The dishwasher appliance of  claim 2 , wherein the wash conduit outlet is offset from a central flow path of the wash conduit in the lateral direction. 
     
     
         7 . The dishwasher appliance of  claim 1 , wherein the third rack assembly comprises a sliding wire insert. 
     
     
         8 . A dishwasher appliance defining a vertical direction, a lateral direction, and a transverse direction, the vertical, lateral, and transverse directions being mutually perpendicular, the dishwasher appliance comprising:
 a tub defining a wash chamber;   a wash conduit in the wash chamber;   a first rack assembly slidably positioned within the wash chamber;   a first spray assembly positioned in the wash chamber and configured to direct wash fluids at the first rack assembly;   a second rack assembly slidably positioned in the wash chamber above the first rack assembly;   a second spray assembly positioned in the wash chamber and configured to direct wash fluids at the second rack assembly;   a third rack assembly slidably positioned in the wash chamber above the second rack assembly;   a third spray assembly positioned within the third rack assembly and configured to direct wash fluid at articles located in the third rack assembly, the third spray assembly comprising an inlet nozzle at one end, the inlet nozzle offset from a wash conduit outlet in the lateral direction; and   a conduit connector connected between the inlet nozzle of the third spray assembly and the wash conduit outlet such that the wash fluid is flowable from the outlet of the wash conduit to the inlet nozzle of the third spray assembly through the conduit connector.   
     
     
         9 . The dishwasher appliance of  claim 8 , further comprising a check valve within the conduit connector. 
     
     
         10 . The dishwasher appliance of  claim 9 , wherein the check valve comprises a flap configured to rotate about the lateral direction and extend in one or more of the transverse direction and vertical direction. 
     
     
         11 . The dishwasher appliance of  claim 10 , wherein the inlet nozzle of the third spray assembly engages the flap of the check valve when the third rack assembly is retracted within the wash chamber in order to open the check valve. 
     
     
         12 . The dishwasher appliance of  claim 8 , wherein the wash conduit outlet is offset from a central flow path of the wash conduit in the lateral direction. 
     
     
         13 . The dishwasher appliance of  claim 8 , wherein the third rack assembly comprises a sliding wire insert. 
     
     
         14 . A dishwasher appliance defining a vertical direction, a lateral direction, and a transverse direction, the vertical, lateral, and transverse directions being mutually perpendicular, the dishwasher appliance comprising:
 a tub defining a wash chamber;   a wash conduit in the wash chamber;   a first rack assembly slidably positioned within the wash chamber;   a first spray assembly positioned in the wash chamber and configured to direct wash fluids at the first rack assembly;   a second rack assembly slidably positioned in the wash chamber above the first rack assembly;   a second spray assembly positioned in the wash chamber and configured to direct wash fluids at the second rack assembly;   a third rack assembly slidably positioned in the wash chamber above the second rack assembly;   a third spray assembly positioned within the third rack assembly and configured to direct wash fluid at articles located in the third rack assembly, the third spray assembly comprising an inlet nozzle at one end, the inlet nozzle offset from a wash conduit outlet in the lateral direction; and   a conduit connector connected between the inlet nozzle of the third spray assembly and the wash conduit outlet, the conduit connector comprising a check valve.   
     
     
         15 . The dishwasher appliance of  claim 14 , wherein the check valve comprises a flap configured to rotate about the lateral direction and extend in one or more of the transverse direction and vertical direction. 
     
     
         16 . The dishwasher appliance of  claim 15 , wherein the inlet nozzle of the third spray assembly engages the flap of the check valve when the third rack assembly is retracted within the wash chamber in order to open the check valve. 
     
     
         17 . The dishwasher appliance of  claim 14 , wherein the wash conduit outlet is offset from a central flow path of the wash conduit in the lateral direction. 
     
     
         18 . The dishwasher appliance of  claim 14 , wherein the third rack assembly comprises a sliding wire insert.