Washing machine

Abstract

Disclosed is a washing machine provided with a nozzle for spraying washing water into a drum at a broadened angle, thus improving washing efficiency and rinsing efficiency and reducing a quantity of the washing water consumed. The washing machine comprises a tub for containing washing water, a drum rotatably arranged in the tub for accommodating laundry, a motor for rotating the drum, and a washing water-circulating device for circulating the washing water so that the washing water in the tub is sprayed into the drum, wherein the washing water-circulating device includes a nozzle having a vertical water-spraying angle in the range of 30° to 40°.

1 . A washing machine comprising a tub for containing washing water, a drum rotatably arranged in the tub for accommodating laundry, a motor for rotating the drum, and a washing water-circulating device for circulating the washing water so that the washing water in the tub is sprayed into the drum, 
 wherein the washing water-circulating device includes a nozzle having a vertical water-spraying angle in the range of 30 to 40′.    
   
   
       2 . The washing machine as set forth in  claim 1 , 
 wherein the washing water-circulating device further includes a cylinder installed on a gasket arranged in front of the tub and provided with a through hole for passing the circulated washing water.    
   
   
       3 . The washing machine as set forth in  claim 2 , wherein the washing water-circulating device includes: 
 a drainage bellows tube having one end connected to a drainage hole formed in the tub for guiding the washing water in the tub;    a circulating pump to which the other end of the drainage bellows tube is connected for pumping the guided washing water; and    a circulating hose having one end connected to the circulating pump and the other end connected to the cylinder for guiding the pumped washing water to the cylinder.    
   
   
       4 . The washing machine as set forth in  claim 2 , 
 wherein the through hole of the cylinder has a diameter, which is 0.4 to 0.65 times as large as the diameter of the nozzle.    
   
   
       5 . The washing machine as set forth in  claim 2 , wherein the nozzle includes: 
 an upper horizontal portion protruded horizontally from a lower end of the cylinder;    a front vertical portion protruded perpendicularly from the upper horizontal portion; and    a lower sloping portion extended from a lower end of the front vertical portion at a vertical sloping angle in the range of 30′ to 40° and arranged opposite to the through hole.    
   
   
       6 . The washing machine as set forth in  claim 5 , 
 wherein a central part of the lower sloping portion is spaced from a lower end of the through hole by a distance of 2 mm to 4 mm.    
   
   
       7 . The washing machine as set forth in  claim 5 , 
 wherein the lower sloping portion has a length of 20 mm to 25 mm.    
   
   
       8 . A washing machine comprising a tub for containing washing water, a drum rotatably arranged in the tub for accommodating laundry, a motor for rotating the drum, and a washing water-circulating device for circulating the washing water so that the washing water in the tub is sprayed into the drum, 
 wherein the washing water-circulating device includes a nozzle having a horizontal water-spraying angle in the range of 110° to 130°.    
   
   
       9 . The washing machine as set forth in  claim 8 , 
 wherein the nozzle has an opened rear surface and an angle between both side surfaces thereof in the range of 130° to 140°.    
   
   
       10 . The washing machine as set forth in  claim 8 , wherein the washing water-circulating device further includes a cylinder installed on a gasket arranged in front of the tub and provided with a through hole for passing the circulated washing water.  
   
   
       11 . The washing machine as set forth in  claim 10 , wherein the washing water-circulating device includes: 
 a drainage bellows tube having one end connected to a drainage hole formed in the tub for guiding the washing water in the tub;    a circulating pump to which the other end of the drainage bellows tube is connected for pumping the guided washing water; and    a circulating hose having one end connected to the circulating pump and the other end connected to the cylinder for guiding the pumped washing water to the cylinder.    
   
   
       12 . The washing machine as set forth in  claim 10 , wherein the nozzle includes: 
 an upper horizontal portion protruded horizontally from a lower end of the cylinder;    a front vertical portion protruded perpendicularly from the upper horizontal portion;    a lower sloping portion extended from a lower end of the front vertical portion and located to be opposite to the through hole of the cylinder; and    side vertical portions located between both sides of the upper horizontal portion and the lower sloping portion at a horizontal sloping angle in the range of 130′ to 140°.    
   
   
       13 . A washing machine comprising a tub for containing washing water, a drum rotatably arranged in the tub for accommodating laundry, a motor for rotating the drum, and a washing water-circulating device for circulating the washing water so that the washing water in the tub is sprayed into the drum, 
 wherein the washing water-circulating device includes a nozzle having different right and left vertical water-spraying angles.    
   
   
       14 . The washing machine as set forth in  claim 13 , 
 wherein one angle of the right and left vertical water-spraying angles of the nozzle is in the range of 5° to 20°, and the other angle of the right and left vertical water-spraying angles of the nozzle is in the range of 30 to 50°.    
   
   
       15 . The washing machine as set forth in  claim 13 , 
 wherein the washing water-circulating device further includes a cylinder installed on a gasket arranged in front of the tub and provided with a through hole for passing the circulated washing water.    
   
   
       16 . The washing machine as set forth in  claim 15 , wherein the washing water-circulating device includes: 
 a drainage bellows tube having one end connected to a drainage hole formed in the tub for guiding the washing water in the tub;    a circulating pump to which the other end of the drainage bellows tube is connected for pumping the guided washing water; and    a circulating hose having one end connected to the circulating pump and the other end connected to the cylinder for guiding the pumped washing water to the cylinder.    
   
   
       17 . The washing machine as set forth in  claim 15 , wherein the nozzle includes: 
 an upper horizontal portion protruded horizontally from a lower end of the cylinder;    a front vertical portion protruded perpendicularly from the upper horizontal portion; and    a lower sloping portion extended from a lower end of the front vertical portion, located to be opposite to the through hole of the cylinder, and having one vertical water-spraying angle in the range of 5 to 20 and the other vertical water-spraying angle in the range of 30° to 50°.    
   
   
       18 . A washing machine comprising a tub for containing washing water, a drum rotatably arranged in the tub for accommodating laundry, a motor for rotating the drum, and a washing water-circulating device for circulating the washing water so that the washing water in the tub is sprayed into the drum, 
 wherein the washing water-circulating device includes a nozzle having different right and left horizontal water-spraying angles.    
   
   
       19 . The washing machine as set forth in  claim 18 , 
 wherein one angle of the right and left horizontal water-spraying angles of the nozzle is in the range of 30 to 50°, and the other angle of the right and left horizontal water-spraying angles of the nozzle is in the range of 60° to 80°.    
   
   
       20  The washing machine as set forth in  claim 18 , 
 wherein the washing water-circulating device further includes a cylinder installed on a gasket arranged in front of the tub and provided with a through hole for passing the circulated washing water.    
   
   
       21 . The washing machine as set forth in  claim 20 , wherein the washing water-circulating device includes: 
 a drainage bellows tube having one end connected to a drainage hole formed in the tub for guiding the washing water in the tub;    a circulating pump to which the other end of the drainage bellows tube is connected for pumping the guided washing water; and    a circulating hose having one end connected to the circulating pump and the other end connected to the cylinder for guiding the pumped washing water to the cylinder.    
   
   
       22 . The washing machine as set forth in  claim 20 , wherein the nozzle includes: 
 an upper horizontal portion protruded horizontally from a lower end of the cylinder;    a front vertical portion protruded perpendicularly from the upper horizontal portion; and    a lower sloping portion extended from a lower end of the front vertical portion, located to be opposite to the through hole of the cylinder, and having one horizontal water-spraying angle in the range of 30′ to 50° and the other horizontal water-spraying angle in the range of 60° to 80°.