Detergent supply device and washing machine having the same

Abstract

A washing machine including a machine body, an upper case coupled to the upper part of the machine body, a rotary tub rotatably disposed in the machine body, a detergent supply device coupled to the upper case to supply detergent into the rotary tub, and a water supply valve connected between an external water supply source and the detergent supply device, wherein the detergent supply device includes a detergent box having a first guide member in which the detergent is put and a second guide member to change a flow direction of wash water flowing along the first guide member and a water supply frame having a connection part connected to the water supply valve and a water supply part communicating with the connection part to supply water to the detergent box.

1 . A washing machine comprising:
 a machine body;   an upper case coupled to an upper part of the machine body;   a rotary tub rotatably disposed in the machine body;   a detergent supply device coupled to the upper case to supply detergent into the rotary tub; and   a water supply valve connected to the detergent supply device, wherein the detergent supply device comprises:   a detergent box having a first guide member in which the detergent is put and a second guide member to change a flow direction of wash water flowing along the first guide member; and   a water supply frame having a connection part connected to the water supply valve and a water supply part communicating with the connection part to supply water to the detergent box.   
     
     
         2 . The washing machine according to  claim 1 , wherein the water supply frame comprises:
 at least one first water supply hole to guide water introduced into the water supply part upstream of the first guide member; and   at least one second water supply hole to guide water introduced into the water supply part downstream of the first guide member.   
     
     
         3 . The washing machine according to  claim 1 , wherein
 the detergent box comprises a cutout to prevent wash water in the detergent box from being discharged to the water supply frame, and   the cutout is provided at an upper part of the detergent box adjacent to the water supply frame.   
     
     
         4 . The washing machine according to  claim 1 , wherein the connection part comprises a residual water removal hole communicating with the connection part to remove residual water in the detergent supply device. 
     
     
         5 . The washing machine according to  claim 1 , further comprising a cover frame coupled to the upper part of the water supply frame to cover the water supply part, wherein the cover frame is thermally welded to the water supply frame. 
     
     
         6 . The washing machine according to  claim 3 , wherein the detergent supply device is provided at a front thereof with a third guide member to guide wash water discharged through the cutout into the rotary tub together with the second guide member. 
     
     
         7 . The washing machine according to  claim 1 , wherein
 the connection part further comprises a bent part formed by bending one end thereof,   the bent part has a fixing rib protruding downward from an outer circumference thereof, and   the upper case has a fixing hole corresponding to the fixing rib.   
     
     
         8 . The washing machine according to  claim 1 , wherein
 the water supply frame comprises a detergent introduction port through which detergent is introduced, and   the cover frame comprises a cover member to open and close the detergent introduction port.   
     
     
         9 . The washing machine according to  claim 1 , wherein the upper case comprises a fourth guide member disposed below the second guide member to change a flow direction of wash water flowing along the second guide member. 
     
     
         10 . The washing machine according to  claim 9 , wherein the third guide member and the fourth guide member constitute a discharge port through which the wash water having passed through the first guide member and the second guide member falls into the rotary tub. 
     
     
         11 . The washing machine according to  claim 6 , wherein the first guide member is inclined downward to the second guide member, and the second guide member is inclined downward to the fourth guide member. 
     
     
         12 . A washing machine comprising: a machine body; a rotary tub rotatably disposed in the machine body; a detergent supply device disposed above the rotary tub, the detergent supply device having a detergent box to store detergent; and a water supply valve connected to the detergent supply device, wherein the detergent supply device comprises:
 a water supply frame having at least one water supply hole to guide water introduced through the water supply valve to the detergent box; and   the detergent box comprising a first channel into which the water having passed through the water supply hole is introduced, a second channel disposed below the first channel to guide wash water in a different direction than the first channel, and a third channel provided at an outside of the detergent box to guide the wash water falling from an upper part of the detergent box into the rotary tub.   
     
     
         13 . The washing machine according to  claim 12 , wherein the detergent box comprises a cutout to guide the wash water in the upper part of the detergent box to the third channel. 
     
     
         14 . The washing machine according to  claim 12 , wherein the water supply hole comprises:
 at least one first water supply hole to guide water introduced through the water supply valve to one side of the detergent box; and   at least one second water supply hole to guide water introduced through the water supply valve to the other side of the detergent box.   
     
     
         15 . The washing machine according to  claim 14 , wherein the water having fallen through the second water supply hole is supplied to the wash water having passed through the first channel to prevent bubble generation. 
     
     
         16 . The washing machine according to  claim 12 , wherein
 the water supply frame further comprises a connection part coupled to the water supply valve, and   the connection part has an air introduction port communicating with the connection part to allow external air to be introduced into the connection part therethrough.   
     
     
         17 . The washing machine according to  claim 12 , further comprising an upper case coupled to an upper part of the machine body, wherein
 the upper case defines a fourth channel disposed at a lower part of the detergent supply device to guide wash water in a different direction than the second channel together with the detergent box.   
     
     
         18 . The washing machine according to  claim 17 , wherein the first channel, the second channel and the fourth channel communicate with one another to constitute a route along which wash water flows, the route being formed in an approximately ‘S’ shape. 
     
     
         19 . The washing machine according to  claim 14 , wherein
 the water supply frame comprises a detergent introduction port through which detergent is introduced, and   the first water supply hole and the second water supply hole are disposed around an outside of the detergent introduction port.   
     
     
         20 . The washing machine according to  claim 19 , wherein the detergent introduction port is disposed so as to be exposed from the top of the upper case.