Washing machine

Abstract

A washing machine includes: a cabinet forming an external appearance and having an open upper portion; a reservoir hanging within the cabinet and allowing washing water to be put therein; a washing tub rotatably disposed within the reservoir and accommodating the laundry; and a spray nozzle spraying washing water into the washing tub such that one boundary of sprayed washing machine reaches a side wall of the washing tub and the other boundary of the sprayed washing water reaches the bottom of the washing tub, wherein the spray nozzle includes: a tube part forming a passage along which washing water is introduced; and a spray part connected with the tube part to spray washing water and disposed such that a spray face against which washing water discharged from the tube part splashes is bent at a certain angle with respect to a discharge direction of the tube part. The laundry can be effectively wet by increasing a spray range of washing water.

1 . A washing machine comprising:
 a cabinet forming an external appearance and having an open upper portion;   a reservoir hanging within the cabinet and allowing washing water to be put therein;   a washing tub rotatably disposed within the reservoir and accommodating the laundry; and   a spray nozzle spraying washing water into the washing tub such that one to boundary of sprayed washing water reaches a side wall of the washing tub and the other boundary of the sprayed washing water reaches the bottom of the washing tub,   wherein the spray nozzle comprises:
 a tube part forming a passage along which washing water is introduced; and 
 a spray part connected with the tube part to spray washing water and disposed such that a spray face against which washing water discharged from the tube part splashes is bent at a certain angle with respect to a discharge direction of the tube part. 
   
     
     
         2 . The washing machine of  claim 1 , wherein the spray face has a width gradually increasing toward an outlet from which washing water is sprayed. 
     
     
         3 . The washing machine of  claim 1 , wherein the boundary at which washing water sprayed by the spray nozzle reaches the washing tub makes a slant line from the side wall to the bottom of the washing tub. 
     
     
         4 . The washing machine of  claim 1 , wherein the tube part has an inner diameter gradually reduced from an inlet to which washing water is introduced to an outlet from which washing water is discharged. 
     
     
         5 . The washing machine of  claim 1 , further comprising:
 a top cover provided at an upper portion of the cabinet and having a laundry entry hole through which the laundry enter,   wherein the spray nozzle is disposed on the top cover.   
     
     
         6 . The washing machine of  claim 5 , further comprising:
 a detergent water supply unit provided at the top cover and supplying washing water by way of a detergent box to the interior of the washing tub,   wherein the spray nozzle is disposed to be adjacent to the detergent supply unit.   
     
     
         7 . The washing machine of  claim 6 , wherein the spray nozzle is disposed at the lateral side of the detergent water supply unit. 
     
     
         8 . The washing machine of  claim 6 , wherein the spray nozzle is disposed at a lower side of the detergent water supply unit. 
     
     
         9 . The washing machine of  claim 5 , wherein the spray nozzle is coupled with the top cover and comprises a reinforcing part for reinforcing coupling strength with the tog cover. 
     
     
         10 . The washing machine of  claim 9 , wherein the reinforcing part is formed as a plate body extending from an outer circumference of the tube part in an outward direction. 
     
     
         11 . The washing machine of  claim 5 , wherein, in order to configure a spray direction of the spray nozzle, a position configuration protrusion is formed at one of the spray nozzle and the top cover and a position configuration hole, into which the position configuration protrusion is inserted, is formed at another of the spray nozzle and the top cover. 
     
     
         12 . The washing machine of  claim 1 , further comprising:
 a reservoir cover disposed at an upper portion of the reservoir and having a laundry entry hole formed to allow the laundry to enter therethrough,   wherein the spray nozzle is disposed at the reservoir cover.   
     
     
         13 . The washing machine of  claim 1 , wherein the spray part has a flow path sectional area gradually increasing lopsidedly toward a side wall of the washing tub. 
     
     
         14 . The washing machine of  claim 13 , further comprising:
 a top cover provided at an upper portion of the cabinet and having a laundry entry hole formed to allow the laundry to enter therethrough,   wherein the spray nozzle rotates as a certain angle such that a spray direction of washing water to be lopsided to one of left and right side walls of the washing tub.   
     
     
         15 . The washing machine of  claim 13 , wherein the spray part is formed such that an upper face thereof slopes at a certain angle to a lower face thereof. 
     
     
         16 . The washing machine of  claim 13 , wherein the distance between upper and lower faces of the spray part increases toward to side wall of the washing tub. 
     
     
         17 . The washing machine of  claim 13 , wherein the spray part is not symmetrical based on the center of the tube part. 
     
     
         18 . The washing machine of  claim 13 , wherein upper, lower, left, and right faces of the spray part are flat. 
     
     
         19 . The washing machine of  claim 18 , wherein regions where the upper, lower, left, and right faces of the spray part are in contact is rounded at a certain angle. 
     
     
         20 . The washing machine of  claim 1 , wherein when a load of the washing machine is a minimum load, the spray nozzle sprays water to a height at which the spray nozzle is available for side wall spray, and when the load of the washing tub is a maximum load, the spray nozzle sprays water to below a pre-set uppermost allowance spray point. 
     
     
         21 . The washing machine of  claim 20 , wherein when the load of the washing tub is the minimum load, the spray nozzle sprays water to be higher than the height of a middle point of the side wall of the washing tub. 
     
     
         22 . The washing machine of  claim 20 , wherein a disposition angle of the spray part is set such that a spray range of the spray nozzle is within a pre-set spray range.