Dish washer

Abstract

The spray nozzle of a dish washer comprises a nozzle port and a guide unit provided on an outside of the nozzle port, the guide unit being provided with a slide surface extended at an inner circumferential surface of the nozzle port. Water flow having a water screen shape can be sprayed from the spray nozzle.

What is claimed is: 
     
         1 . A dish washer, comprising:
 a body;   a washing tub provided inside of the body; and   a spray nozzle rotatably coupled to a water supply pipe to spray water inside the washing tub,   wherein the spray nozzle comprises
 a body unit provided with a main flow path to receive water from the water supply pipe and a nozzle port to spray the water received in the main flow path to outside of the body unit towards the inside of the washing tub; and 
 a guide unit including a slide surface disposed outside of the nozzle port and extended at an inner circumferential surface of the nozzle port to guide the spray of the water from the nozzle port. 
   
     
     
         2 . The dish washer of  claim 1 , wherein
 the water sprayed from the nozzle port further flows along the slide surface while the water is sprayed from the nozzle port.   
     
     
         3 . The dish washer of  claim 1 , wherein
 the guide unit is disposed such that when viewed in a cross section of the spray nozzle taken along a vertical direction of the dish washer, an angle between a tangent line of a start point of the slide surface and a tangent line of an end point of the slide surface is larger than approximately 90 degree.   
     
     
         4 . The dish washer of  claim 1 , wherein
 the guide unit is disposed such that when viewed in a cross section of the spray nozzle taken along a vertical direction of the dish washer, the tangent line of the end point of the slide surface is tilted with respect to a vertical line of the vertical direction.   
     
     
         5 . The dish washer of  claim 1 , wherein
 the guide unit is disposed such that when viewed in a cross section of the spray nozzle taken along a vertical direction of the dish washer, the tangent line of the start point of the slide surface is tilted with respect to a horizontal line of the dish washer.   
     
     
         6 . The dish washer of  claim 1 , wherein
 the guide unit is disposed such that when viewed in a cross section of the spray nozzle taken along a vertical direction of the dish washer, the nozzle port is tilted with respect to a horizontal line of the dish washer.   
     
     
         7 . The dish washer of  claim 1 , wherein
 an outlet of the nozzle port has an approximate square shape having an upper edge, a lower edge, a left edge and a right edge.   
     
     
         8 . The dish washer of  claim 7 , wherein
 the slide surface is extended from the lower edge.   
     
     
         9 . The dish washer of  claim 1 , wherein
 the body unit comprises a main body connected to the water supply pipe and a cover body coupled to the main body.   
     
     
         10 . The dish washer of  claim 9 , wherein
 the main flow path is formed between the cover body and the main body.   
     
     
         11 . The dish washer of  claim 9 , wherein
 the nozzle port is formed in the main body.   
     
     
         12 . The dish washer of  claim 9 , wherein
 the nozzle port is formed between the cover body and the main body.   
     
     
         13 . The dish washer of  claim 9 , wherein
 the disposed guide unit is integrally formed with the main body.   
     
     
         14 . The dish washer of  claim 9 , wherein
 the cover body and the main body respectively comprise a coupling unit to be coupled to each other.   
     
     
         15 . A dish washer, comprising:
 a body;   a washing tub provided inside of the body; and   a spray nozzle rotatably coupled to a water supply pipe to spray water inside the washing tub,   wherein the spray nozzle comprises
 a main body coupled to the water supply pipe; 
 a cover body coupled to the main body; 
 a main flow path formed between the main body and the cover body; 
 a nozzle port to spray the water received in the main flow path; and 
 a slide surface disposed outside of the nozzle port to extend at an inner circumferential surface of the nozzle port to guide a spray of the water on the slide surface towards the inside of the washing tub. 
   
     
     
         16 . The dish washer of  claim 15 , wherein
 the nozzle port is formed in the main body.   
     
     
         17 . The dish washer of  claim 15 , wherein
 the nozzle port is formed between the cover body and the main body.   
     
     
         18 . The dish washer of  claim 15 , wherein
 the disposed slide surface is integrally formed with the main body.   
     
     
         19 . The dish washer of  claim 15 , wherein
 the cover body and the main body respectively comprise a coupling unit to be coupled to each other.   
     
     
         20 . A dish washer, comprising:
 a body;   a washing tub provided inside of the body; and   a spray nozzle rotatably coupled to a water supply pipe to spray water inside the washing tub,   wherein the spray nozzle comprises
 a nozzle port configured to spray the water; and 
 a slide surface corresponding to the nozzle port to guide the spray of the water on the slide surface from the nozzle port.