Dishwasher

Abstract

Disclosed is a dish washer in which a plurality of supply holes is defined in a water guide, and washing water is supplied through the plurality of supply holes regardless of a vertical level of each of a lower rack and a spraying arm holder, such that even when one of the plurality of supply holes becomes clogged, supply of the washing water is maintained through the remaining supply holes, thereby preventing washing power and rinsing power from being lowered.

What is claimed is: 
     
         1 . A dish washer comprising:
 a tub having a washing space defined therein;   a rack disposed in the washing space so as to extend from or retract into the washing space, wherein a dish is mounted on the rack, and a vertical level of the rack is adjustable;   a spraying arm disposed under the rack so as to spray washing water to the rack, wherein the spraying arm is movable together with the rack when the vertical level of the rack is adjusted;   a water guide defining a supply flow path therein through which the washing water to be supplied to the spraying arm flows; and   a spraying arm holder constructed to supply the spraying arm and to guide the washing water supplied thereto from the water guide to the spraying arm,   wherein the water guide has a first supply hole and a second supply hole defined therein communicating with the spraying arm holder so as to supply the washing water flowing along the supply flow path to the spraying arm holder.   
     
     
         2 . The dish washer of  claim 1 , wherein the first supply hole and the second supply hole are arranged vertically. 
     
     
         3 . The dish washer of  claim 2 , wherein the dish washer further comprises a connector detachably connecting the spraying arm holder and the water guide to each other,
 wherein the connector includes:
 a main body extending in a vertical direction and attached to the water guide; 
 a first supply nipple protruding horizontally from the main body, wherein one open end in a horizontal direction of the first supply nipple communicates with the first supply hole, and the other open end in the horizontal direction of the first supply nipple faces toward the spraying arm holder; and 
 a second supply nipple protruding horizontally from the main body, wherein one open end in the horizontal direction of the second supply nipple communicates with the second supply hole, and the other open end in the horizontal direction of the second supply nipple faces toward the spraying arm holder. 
   
     
     
         4 . The dish washer of  claim 3 , wherein the second supply nipple is disposed under the first supply nipple,
 wherein the first supply nipple and the second supply nipple are arranged consecutively along the vertical direction.   
     
     
         5 . The dish washer of  claim 3 , wherein the first supply nipple and the second supply nipple have the same shape and size. 
     
     
         6 . The dish washer of  claim 3 , wherein the spraying arm holder includes:
 a flow path connection portion having a receiving space defined therein into which the first supply nipple and the second supply nipple are inserted; and   a connection pipe having one end communicating with the receiving space of the flow path connection portion and the other end coupled to the spraying arm,   wherein each of the first supply nipple and the second supply nipple is in a constant inserted state into the receiving space regardless of the vertical level of the rack.   
     
     
         7 . The dish washer of  claim 6 , wherein each of the other end of the first supply nipple and the other end of the second supply nipple is spaced from an inner surface of the flow path connection portion defining the receiving space. 
     
     
         8 . The dish washer of  claim 6 , wherein the connector further includes a plurality of dummy nipples respectively disposed on top of the first supply nipple and under the second supply nipple, wherein one of one end and the other end each of the plurality of dummy nipples is blocked,
 wherein the plurality of dummy nipples, the first supply nipple, and the second supply nipple are arranged in a line along a vertical direction.   
     
     
         9 . The dish washer of  claim 6 , wherein the water guide further includes a third supply hole constructed to communicate with the spraying arm holder and supply washing water flowing along the supply flow path to the spraying arm holder,
 wherein the connector further includes a third supply nipple having one open end communicating with the third supply hole and the other open end connected to the main body.   
     
     
         10 . The dish washer of  claim 9 , wherein the third supply nipple, the first supply hole and the second supply hole are arranged in a line along a vertical direction. 
     
     
         11 . The dish washer of  claim 9 , wherein each of the first supply nipple, the second supply nipple, and the third supply nipple is in a constant inserted state into the receiving space regardless of the vertical level of the rack. 
     
     
         12 . The dish washer of  claim 1 , wherein the first supply hole and the second supply hole are arranged in a horizontal line. 
     
     
         13 . The dish washer of  claim 12 , wherein the dish washer further comprises a connector detachably connecting the spraying arm holder to the water guide,
 wherein the connector includes:
 a main body extending in a vertical direction and attached to the water guide; 
 a first supply nipple protruding horizontally from the main body, wherein one open end in a horizontal direction of the first supply nipple communicates with the first supply hole, and the other open end in the horizontal direction of the first supply nipple faces toward the spraying arm holder; and 
 a second supply nipple protruding horizontally from the main body, wherein one open end in the horizontal direction of the second supply nipple communicates with the second supply hole, and the other open end in the horizontal direction of the second supply nipple faces toward the spraying arm holder. 
   
     
     
         14 . The dish washer of  claim 12 , wherein the first and second supply nipples are arranged in a horizontal line. 
     
     
         15 . The dish washer of  claim 12 , wherein the first supply nipple and the second supply nipple have the same shape and size. 
     
     
         16 . The dish washer of  claim 1 , wherein the dish washer further comprises a connector detachably connecting the spraying arm holder and the water guide to each other,
 wherein the connector includes:
 a main body extending in a vertical direction and attached to the water guide; 
 a first supply nipple protruding horizontally from the main body, wherein one open end in a horizontal direction of the first supply nipple communicates with the first supply hole, and the other open end in the horizontal direction of the first supply nipple faces toward the spraying arm holder; and 
 a second supply nipple protruding horizontally from the main body, wherein one open end in the horizontal direction of the second supply nipple communicates with the second supply hole, and the other open end in the horizontal direction of the second supply nipple faces toward the spraying arm holder. 
   
     
     
         17 . The dish washer of  claim 16 , wherein the spraying arm holder includes:
 a flow path connection portion having a receiving space defined therein into which the first supply nipple and the second supply nipple are inserted;   a cover coupled to one open surface of the flow path connection portion and having a plurality of first receiving holes into which the first supply nipple and the second supply nipple are respectively inserted; and   a sealing member attached to one surface of the cover and made of an elastic material, wherein the sealing member has a plurality of second receiving holes defined therein respectively at positions corresponding to positions of the plurality of first receiving holes,   wherein an inner diameter of each of the second receiving holes is smaller than an inner diameter of each of the first receiving holes.   
     
     
         18 . The dish washer of  claim 17 , wherein the sealing member includes each insertion portion protruding toward each first receiving hole and defining an inner diameter of each second receiving hole,
 wherein the inner diameter of each second receiving hole defined in the insertion portion is smaller than each of an outer diameter of the first supply nipple and an outer diameter of the second supply nipple.   
     
     
         19 . The dish washer of  claim 18 , wherein when each of the first supply nipple and the second supply nipple has been inserted into each second receiving hole, each insertion portion is elastically deformed. 
     
     
         20 . The dish washer of  claim 17 , wherein the cover includes a guide protrusion protruding toward the sealing member so as to guide an attachment position of the sealing member to the cover,
 wherein the sealing member has a guide hole defined therein into which the guide protrusion is inserted.