KR102487865B1 - Washing machine - Google Patents

Abstract

A washing machine according to the present invention includes a cabinet forming an exterior; a tub disposed inside the cabinet and storing wash water; a water supply unit supplying washing water to the tub; a detergent box receiving wash water from the water supply unit and supplying it to the tub; a first water supply pipe supplying wash water from the detergent box to the front of the tub; and a second water supply pipe supplying wash water from the detergent box to either the side or the rear of the tub.
The washing machine according to the present invention has the advantage of separately supplying wash water to at least one of the front side or the side of the tub, and preventing the wash water from directly falling onto the laundry when water is supplied.

Description

Washing machine {Washing machine}

The present invention relates to a washing machine, and more particularly, to a washing machine capable of supplying wash water to a tub in two directions.

In general, a washing machine is a device that cleans clothes, bedding, etc. (hereinafter referred to as 'laundry') through processes such as washing, rinsing, and dehydration using water, detergent, and mechanical action to remove stains.

Washing machines are largely classified into agitator type, pulsator type, and drum type washing machines.

The agitation type rotates the washing rod at the center of the tub to the left and right to wash, the vortex type rotates the disk-shaped rotary blades formed at the bottom of the tub to the left and right to wash using the frictional force between the water flow and the laundry, and the drum type cleans the inside of the drum. Add water, detergent and laundry and rotate the drum to wash.

In the drum washing machine, a tub accommodating washing water is mounted inside a cabinet forming an exterior, a drum accommodating laundry is disposed inside the tub, a drive unit for rotating the drum is mounted on the rear side of the tub, and a tub A drive shaft connected to the back side of the drum is built through. A lifter is mounted inside the drum to lift the laundry when the drum rotates.

An object of the present invention is to provide a washing machine capable of supplying wash water to a tub in two directions.

Another problem to be solved by the present invention is to provide a washing machine capable of temporarily storing liquid detergent when washing water is supplied to the front.

Another problem to be solved by the present invention is to provide a washing machine capable of flowing along the wall surface of the tub when water is supplied from the side of the washing machine.

Another problem to be solved by the present invention is to provide a washing machine capable of preventing a fluid inside a tub from flowing backward when washing water is supplied.

Another problem to be solved by the present invention is to provide a washing machine capable of preventing wash water from directly falling into laundry when washing water is supplied.

The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, a washing machine according to an embodiment of the present invention includes a cabinet forming an exterior; a tub disposed inside the cabinet and storing wash water; a water supply unit supplying washing water to the tub; a detergent box receiving wash water from the water supply unit and supplying it to the tub; a first water supply pipe supplying wash water from the detergent box to the front of the tub; and a second water supply pipe supplying wash water from the detergent box to either the side or the rear of the tub.

A laundry entry/exit hole through which laundry enters and exits is formed in front of the cabinet, a gasket is disposed between the cabinet and the tub, and seals the laundry entry/exit hole, and the first water supply pipe may be connected to the gasket.

A backflow prevention structure of a U-trap structure may be formed in at least one of the first water supply pipe and the second water supply pipe.

The first water supply pipe may include a U-trap unit connected to the detergent box, storing a portion of wash water and preventing fluid from flowing backward; It may include a; connection part connected to the U-trap part and connected to the front side of the tub to supply wash water.

The detergent box may be formed at a lower side, a supply unit for guiding wash water may be formed, and the U-trap unit may be positioned below the detergent box and connected to the supply unit.

The connection part may include a bending connection part connected to a front end of the U-trap part, formed by bending in a left-right direction from a front-back direction of the washing machine, and guiding wash water; a horizontal connection portion connected to the bending connection portion and formed in a horizontal direction; It may include an inclined connection part connected to the horizontal connection part and inclined downward to supply wash water to the front of the tub.

The second water supply pipe may be installed to allow wash water to fall into the tub and to flow the falling wash water along an inner surface of the tub.

It may further include a drum disposed inside the tub, loaded with laundry, and rotated with respect to the tub, wherein wash water discharged from the second water supply pipe falls into a space between the tub and the drum. there is.

The second water supply pipe may be installed to flow wash water along the inner surface of the tub.

The second water supply pipe may be connected to the tub in a vertical direction, and may be disposed to supply wash water in a vertical direction.

A supply part formed in a vertical direction may be formed in the tub, and the second water supply pipe may be connected to the supply part.

A backflow prevention structure may be installed in at least one of the second water supply pipe and the supply unit.

The backflow prevention structure may include a water guide installed in the supply unit and guiding wash water supplied from the second water supply pipe to the tub; It is disposed between the water guide and the supply unit, is spaced apart from the supply unit to form a first backflow prevention passage, and is spaced apart from the water guide at a predetermined interval to form a second backflow prevention passage, A water storage unit which partially stores wash water and submerses a lower end of the water guide in the stored wash water; may be included.

The water guide may be hooked and fixed to an upper end of the supply unit.

The water guide may further include a guide part having a water hole formed therein, the water hole guiding wash water to the water storage part, and a lower end of the guide part being submerged in the water storage part.

A lower surface of the water storage unit may be disposed on a curved surface forming a tub.

When viewed from the front of the washing machine, a lower surface of the water storage unit may be formed as a curved surface.

When viewed from the front of the washing machine, a lower surface of the water storage unit may be formed as a curved surface facing a side surface of the tub.

Details of other embodiments are included in the detailed description and drawings.

According to the washing machine and the control method of the present invention, one or more of the following effects are provided.

First, the washing machine according to the present invention has the advantage of separately supplying wash water to at least one of the front side and the side of the tub.

Second, the washing machine according to the present invention has an advantage of preventing washing water from directly falling on laundry when washing water is supplied.

Third, the washing machine according to the present invention has an advantage of preventing a fluid such as foam or steam inside the tub from flowing backward to the detergent box.

Fourth, the washing machine according to the present invention has an advantage in that liquid detergent is temporarily stored in the U-trap unit when water is supplied from the front.

Fifth, the washing machine according to the present invention has an advantage in preventing concentration of detergent or fabric softener only on specific laundry because washing water does not directly fall on the laundry.

Sixth, the washing machine according to the present invention has the advantage of uniformly dissolving the detergent because wash water rises from the bottom of the tub to wet the laundry.

Seventh, the washing machine according to the present invention has the advantage of minimizing water supply noise because wash water flows down along the tub when the wash water is supplied to the side.

Eighth, the washing machine according to the present invention has an advantage in that the flow separation barrier is disposed in the dispenser so that wash water can be supplied separately to the first supply unit or the second supply unit.

Ninth, the washing machine according to the present invention has the advantage of being able to add rotational force to wash water by forming a swirl partition in the dispenser.

Tenth, in the washing machine according to the present invention, a tub avoiding surface is formed in the dispenser to avoid interference with the tub.

Eleventh, the washing machine according to the present invention has an advantage in that the second supply unit is disposed at the rear side of the first space and the installation length of the second supply pipe supplying wash water to the side of the tub can be minimized.

Twelfth, the washing machine according to the present invention has an advantage in that wash water in the first space is quickly discharged because a separation distance is formed between the passage separation partition wall and the swirl partition wall.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a partially exploded perspective view of a washing machine according to an embodiment of the present invention.
2 is a front cross-sectional view of a washing machine according to an embodiment of the present invention.
3 is a perspective view showing an installation structure of a detergent box according to an embodiment of the present invention.
Figure 4 is a left side view of Figure 3;
5 is a perspective view of the lower body shown in FIG. 3;
FIG. 6 is a plan view of FIG. 5 .
7 is a perspective view of the first water supply pipe shown in FIG. 3;
8 is an enlarged cross-sectional view of the second water supply pipe shown in FIG. 2;

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs. It is provided to completely inform the person who has the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification.

Hereinafter, the present invention will be described with reference to the drawings of FIGS. 1 to 8.

A washing machine according to an embodiment of the present invention includes a cabinet 10 forming an exterior, a tub 20 accommodating wash water, and a drum disposed in the tub 20 and accommodating laundry therein and rotating ( 30), a drive unit (not shown) that rotates the drum 30, a water supply unit 50 that receives wash water from an external water source and supplies it to the tub 20, and detergent for washing is accommodated and washed. It includes a detergent box 60 that mixes water with laundry detergent.

The cabinet 10 forms the exterior of the washing machine. A tub 20 is provided inside the cabinet 10 .

A laundry entry/exit hole 12 is formed on the front of the cabinet 10 to allow laundry to enter/exit. A door 15 capable of opening and closing the laundry input/output hole 12 is rotatably provided on the front of the cabinet 10 .

A gasket 25 is disposed in front of the tub 20 . The gasket 25 is positioned between the cabinet 10 and the tub 20 and prevents water from leaking into the cabinet 10 . The gasket 25 forms a laundry entry/exit hole 12 . The door 15 is in close contact with the gasket 25 . A portion of the door 15 may be partially inserted into the gasket 25 side.

The cabinet 10 includes a control panel 13 that receives commands from a user and displays various status information of the washing machine. The cabinet 10 includes a detergent box 60 in which detergent such as laundry detergent, rinse detergent, or bleach is accommodated so as to be withdrawable.

Laundry is received and rotated in the drum 30 . The drum 30 is formed with a plurality of through holes 31 through which washing water passes. A lifter 32 may be disposed on an inner wall of the drum 30 to lift the laundry to a predetermined height when the drum 30 rotates. The drum 30 is connected to the driving unit and rotates by receiving the rotational force of the driving unit.

The drum 30 is not disposed completely horizontally, but has a predetermined inclination such that the front part of the drum 30 is high and the rear part is lower than horizontal.

The detergent box 60 accommodates detergent such as laundry detergent, rinse detergent or bleach. The detergent box 60 may be drawn out through the front of the cabinet 10 .

When washing water is supplied, the detergent in the detergent box 60 is mixed with the washing water and flows into the tub 20 . The detergent box 60 may be formed by dividing a portion containing laundry detergent, a portion containing rinsing detergent, and a portion containing bleach.

In this embodiment, the detergent box 60 supplies wash water to the tub 20 in two directions. Wash water from the detergent box 60 may be supplied to the front side of the tub 20 . In addition, wash water from the detergent box 60 may be supplied to the side of the tub 20 .

The detergent box 60 includes a dispenser 110 having a two-way water supply path and a drawer 210 movably installed in the dispenser 110 .

The dispenser 110 includes a dispenser body 120 in which wash water can be stored, and a first water supply pipe 130 and a second water supply pipe 140 connecting the dispenser body 120 and the tub 20.

The dispenser body 120 includes a lower body 150 and an upper body 160.

The lower body 150 stores wash water. In this embodiment, the first water supply pipe 130 and the second water supply pipe 140 are connected to the lower body 150 . Unlike the present embodiment, a water supply passage may be connected to the upper body 160 depending on the shape.

The dispenser body 120 has a drawer access hole 125 formed on the front side.

The drawer entry/exit hole 125 is formed by the combination of the lower body 150 and the upper body 160 .

The lower body 150 has a basket shape with an open upper side.

A first supply part 151 connected to the first water supply pipe 130 and a second supply part 152 connected to the second water supply pipe 140 are formed in the lower body 150 .

The first supply part 151 is formed to face downward.

The second supply part 152 is formed to face the rear side.

The first supply unit 151 and the second supply unit 152 are separated by a passage separation partition wall 155 .

The passage separation barrier 155 is formed inside the lower body 150 . The passage separation barrier 155 divides the inside of the lower body 150 into two spaces. The passage separation partition wall 155 may be formed in a straight line, but in this embodiment, it is formed in a bent shape.

In this embodiment, the passage separation partition wall 155 partitions the inside of the lower body 150 in consideration of wash water falling from the drawer 210 .

Unlike the present embodiment, the passage separation barrier 155 may be formed in the drawer 210 . When the passage separation barrier 155 is formed in the drawer 210, it may protrude downward from the lower surface of the drawer 210.

The flow separation partition wall 155 is formed by connecting the first partition wall 156 formed in the front-back direction and the first partition wall 156, and formed diagonally at the rear side of the first partition wall 156. The second partition wall ( 157).

The passage separation barrier 155 prevents washing water from overflowing into adjacent spaces. In particular, the passage separation barrier 155 prevents wash water that has fallen from the drawer 210 from flowing into an adjacent space. Through this, fabric softener, detergent, etc. stored in the drawer 210 can be supplied to the inside of the tub 20 through a target water supply passage.

In this embodiment, the space where the first supply unit 151 is located is defined as the first space 121 , and the space where the second supply unit 152 is located is defined as the second space 122 .

In this embodiment, the second supply unit 152 is located on the rear side of the first space 121 . The first supply part 151 is located at the side of the first space 121, and the second supply part 152 is located at the rear of the first space 121.

A swirl partition wall 153 for guiding wash water to the first supply unit 151 is further formed in the first space 121 .

The swirl partition wall 153 improves the washing water discharge speed.

The swirl partition wall 153 is formed in an arc shape when viewed in plan. The swirl partition wall 153 is formed to be convex toward the front side of the washing machine when viewed from a plan view.

The swirl partition wall 153 and the passage separation partition wall 155 are spaced apart from each other. The swirl partition wall 153 and the passage separation partition wall 155 form a separation distance 154 . In this embodiment, the separation distance 154 is formed between the swirl barrier rib 153 and the first barrier rib 156 .

The swirl partition wall 153 guides the wash water flowing into the first supply unit 151 to be rotated. By the swirl partition wall 153 , wash water may move downward while being rotated along the inner wall of the first supply unit 151 .

In this embodiment, the swirl partition wall 153 extends into the first supply part 151 and is formed. The swirl partition wall 153 divides the inside of the first supply part 151 into two parts.

In this embodiment, the swirl partition wall 153 partitions the inside of the first supply part 151 in the front-rear direction. The swirl partition wall 153 partitions the first supply part 151 into a first swirl space 151a and a second swirl space 151b.

In this embodiment, the swirl partition wall 153 partitions the inlet side of the first supply part 151 .

Meanwhile, a tub avoidance portion 158 convex upward is formed in the second space 122 of the lower body 150 .

The lower body 150 may be brought into close contact with the outer surface of the tub 20 as much as possible by the tub avoiding skin 158 . The tub avoidance part 158 has the advantage of minimizing the installation space of the detergent box 60 and the tub 20.

A backflow prevention structure is installed in the first water supply pipe 130 and the second water supply pipe 140 to block the back flow of foam or steam inside the tub 20 to the detergent box 60 .

The first water supply pipe 130 connects the first supply unit 151 and the front side of the tub 20 . The wash water supplied through the first water supply pipe 130 does not directly fall on the laundry. In this embodiment, the first water supply pipe 130 is connected to the gasket 25 disposed in front of the tub 20 . Unlike the present embodiment, the first water supply pipe 130 may be directly connected to the tub 20 . Wash water supplied from the first water supply pipe 130 may be supplied through the gasket 25 and flow into a space between the tub 20 and the drum 30 .

The first water supply pipe 130 has a structure for preventing steam or foam from flowing back to the detergent box 60.

In this embodiment, the first water supply pipe 130 is installed with a U-trap structure as a backflow prevention structure.

The first water supply pipe 130 is connected to the first supply unit 151, and is connected to the U-trap unit 132 in which wash water or detergent is always stored and the U-trap 132, and is connected to the tub 20. It includes a connection part 134 connected to the front side, and a wear protection part 136 formed on at least one of the U-trap part 132 and the connection part 134.

The first supply part 151 is formed in a vertical direction, and the U-trap part 132 is coupled to the lower side of the first supply part 151 . The wash water in the first space 121 flows to the U-trap unit 132 through the first supply unit 151 .

A predetermined amount of wash water or wash water mixed with detergent is stored in the U-trap unit 132 . The wash water stored in the U-trap unit 132 is supplied to the tub 20 by the additionally supplied wash water.

The U trap part 132 is disposed in the front and rear directions of the washing machine.

The U trap part 132 is installed so that the front side end faces the front.

The connection part 134 connects the U-trap part 132 and the tub 20 .

The connection part 134 is connected to the front side end of the U-trap part 132 .

In this embodiment, the connection part 134 is formed by connecting a bending connection part 134a connected to the front side end of the U-trap part 132 and the bending connection part 134a, and formed in a horizontal direction (134b). ) and an inclined connection part 134c connected to the horizontal connection part 134b and inclined downward to be connected to the tub 20.

The connecting portion 134 may be formed in a straight line. In this embodiment, washing water is horizontally moved in consideration of the structure of the U-trap part 132 and then supplied to the front of the tub 20 along the inclined connection part 134c.

The U-trap part 132 and the connection part 134 are disposed in close contact with the lower side of the lower body 150, and minimize the volume in the internal space of the washing machine.

Detergent supplied to the detergent box may be temporarily stored in the U-trap unit 132 .

When wash water is supplied, the detergent stored in the drawer 210 may flow to the first water supply pipe 130 via the dispenser body 120 .

When liquid detergent is stored in the drawer 210, the liquid detergent may be temporarily stored in the U-trap unit 132.

The anti-abrasion part 136 prevents shock from being directly transmitted to the first water supply pipe 130 when vibration is generated in the washing machine.

In this embodiment, the wear prevention part 136 includes a first wear prevention part 136a formed on the U-trap part 132 and a second wear prevention part 136b formed on the connection part 134.

In this embodiment, the first wear prevention part 136a is formed on the side of the tub 20 and buffers contact with the tub 20 . The second anti-wear portion 136b is formed on the upper side of the connection portion 134 and buffers contact with the lower body 150 . Unlike the present embodiment, the location of the anti-wear part 136 may be changed according to design.

The second water supply pipe 140 connects the second supply part 152 and the side of the tub 20 . The second water supply pipe 140 is disposed to drop wash water in a vertical direction.

A bellows structure is formed on at least a part of the second water supply pipe 140, and through this, vibration or length change can be buffered.

The second water supply pipe 140 flows wash water to the inner surface of the tub 20 . The second water supply pipe 140 falls into the space between the drum 30 and the tub 20 . Wash water falling from the second water supply pipe 140 flows downward along the inner surface of the tub 20 .

Since the washing water supplied from the second water supply pipe 140 flows along the inner surface of the tub 20, noise of washing water falling can be minimized. The wash water supplied through the second water supply pipe 140 does not directly fall on the laundry.

The second water supply pipe 140 has a structure for preventing steam or foam from flowing back to the detergent box 60.

Since the second water supply pipe 140 supplies wash water in the vertical direction, instead of installing a U-trap on the pipe like the first water supply pipe 130, a backflow prevention structure 170 having a U-trap structure is installed inside the pipe. .

A third supply part 23 protrudes from the tub 20 connected to the second water supply pipe 140 . The third supply part 23 is tubular.

The backflow prevention structure 170 is installed between the third supply part 23 and the second water supply pipe 140 . The backflow prevention structure 170 forms a flow path that is bent twice in the vertical direction in at least one of the inside of the second water supply pipe 140 or the inside of the third supply part 23 .

The backflow prevention structure 170 is installed inside the second water supply pipe 140 and guides the wash water flowing through the second water supply pipe 140 toward the tub 20 through a water hole 181 formed inside. and a water guide 180 that is spaced apart from the inner wall of the second water supply pipe 140 by a predetermined distance, and partially stores wash water flowing through the second water supply pipe 140, and the lower end of the water guide 180 is inside. It includes a water storage unit 190 partially inserted into and submerged in the stored wash water.

The water guide 180 is disposed in a vertical direction. The water guide 180 may be installed in either the second water supply pipe 140 or the third supply unit 23. In this embodiment, it is installed at the connection part of the second water supply pipe 140 and the third supply part 23.

The water guide 180 is interlocked with the upper end of the third supply unit 23 . The second water supply pipe 140 surrounds the water guide 180 and is coupled to an upper end of the first supply part 23 .

The water guide 180 includes a water guide body 182 that is hooked and fixed to the first supply unit 23 and a water hole formed inside the guide body 182 and guiding wash water toward the tub 20 ( 181) includes a guide portion 184 formed thereon.

The guide part 184 is formed to extend long in the vertical direction. The water hole 181 is formed inside the guide part 184 .

The guide portion 184 and the guide body 182 are formed to have different diameters. The diameter of the guide part 184 is smaller than the diameter of the guide body 182.

The lower end of the guide part 184 is inserted into the water storage part 190, and a part of the guide part 184 is submerged in the stored wash water.

In this embodiment, the water storage unit 190 is disposed inside the third supply unit 23 and is spaced apart from the inner surface of the third supply unit 23 by a predetermined distance. The water storage unit 190 is spaced apart from the guide unit 184 by a predetermined interval.

So, the first backflow prevention passage 191 is formed between the water storage part 190 and the guide part 184, and the second backflow prevention passage 192 is formed between the water storage part 190 and the third supply part 23. is formed

The first backflow prevention passage 191 and the second backflow prevention passage 192 form a U trap.

The water storage unit 190 may be formed in a cup shape. In this embodiment, the lower surface 195 of the water storage unit 190 is disposed on a curved surface continuous with the outer surface of the tub 20 .

That is, in this embodiment, the lower surface 195 of the water storage unit 190 is formed as a curved surface. The lower surface 195 of the water storage unit 190 is formed as a curved surface on the radius of curvature forming the tub 20 .

The lower side has a function of guiding wash water supplied through the first and second backflow prevention passages 191 and 192 to the inner side of the tub 20 .

Wash water falling from the second anti-backflow passage 192 may fall vertically or may flow along the inner surface of the tub 20 .

When the pressure of the supplied washing water is low, it may flow along the inner surface of the tub 20 due to surface tension. In order to maximize this effect, it is preferable that the second backflow prevention passage 192 closely adheres to the side of the tub 20 when viewed from the front of the washing machine.

As the second backflow prevention passage 192 closely adheres to the side of the tub 20 , wash water can flow along the inner surface of the tub 20 more easily.

Unlike the present embodiment, the second water supply pipe 140 may be installed to flow wash water along the rear inner surface of the tub 20 .

The first water supply pipe 130 and the second water supply pipe 140 provide a flow path structure for supplying wash water to the tub, but block bubbles or steam inside the tub 20 from entering the detergent box 60.

Washing water stored in the U-trap part 132 of the first water supply pipe 130 blocks foam or steam inside the tub 20 from being introduced into the detergent box 60 .

Washing water stored in the water storage unit 190 of the second water supply pipe 140 blocks foam or steam inside the tub 20 from being introduced into the detergent box 60 .

In this embodiment, the water supply unit 50 may separately supply wash water to the first space 121 and the second space 122 of the detergent box 60 .

In this embodiment, wash water for main washing is supplied to the first space 121 . In this embodiment, fabric softener or wash water for pre-supplying is supplied to the second space 122 .

Wash water supplied from the water supply unit 50 is dropped from the drawer 210 and flows into the first space 121 or the second space 122 .

Wash water supplied to the first space 121 for main washing is supplied to the front of the tub 20 through the first water supply pipe 130 . The wash water supplied to the tub 20 through the first water supply pipe 130 minimizes direct contact with the laundry.

Similarly, the wash water supplied to the second space 122 for pre-supplying water or rinsing detergent may be supplied to the side or rear of the tub 20 . Washing water supplied to the tub 20 through the second water supply pipe 140 also flows down along the inner surface of the tub 20 or falls into the space between the tub 20 and the drum 30 so that the washing water touches the laundry. minimize it

Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific embodiments described above, and in the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the claims. Various modifications and implementations are possible by those skilled in the art, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.

10: cabinet 20: tub
23: third supply unit 30: drum
50: water supply unit 60: detergent box
110: dispenser 120: dispenser body
121: first space 122: second space
130: first water supply pipe 132: U trap part
134: connection part 136: wear prevention part
140: second water supply pipe 150: lower body
160: upper body 151: first supply unit
152: second supply unit 153: swirl bulkhead
155: flow path separation bulkhead 156: first bulkhead
157: second bulkhead 158: turb avoidance
170: backflow prevention structure 180: water guide
181: water hole 182: water guide body
184: guide unit 190: water storage unit
191: first backflow prevention passage 192: second backflow prevention passage
195: lower side

Claims (18)

cabinets forming the facade;
a tub disposed inside the cabinet and storing wash water;
a water supply unit supplying washing water to the tub;
a detergent box receiving wash water from the water supply unit and supplying it to the tub;
a first water supply pipe supplying wash water from the detergent box to the front of the tub;
a second water supply pipe supplying wash water from the detergent box to either the side or the rear of the tub;
a supply unit 23 disposed in the tub and guiding wash water supplied from the second water supply pipe into the tub;
a water storage unit disposed inside the supply unit, including a lower surface spaced apart from the supply unit at a predetermined interval to form a first backflow prevention passage, and storing some of the water supplied from the second water supply pipe;
It is installed inside the second water supply pipe to guide wash water supplied from the second water supply pipe to the tub, and the lower end is inserted into the water storage part and is spaced apart from the water storage part by a predetermined distance to form a second backflow prevention passage. Including; a water guide to
The water guide,
A water guide body fixed to the supply unit; a guide part formed to extend downward from the water guide body and disposed on the upper side of the lower side surface; A water hole formed inside the guide part and guiding wash water supplied from the second water supply pipe to the lower surface;
The washing machine wherein the water guide is pressurized by the second water supply pipe and closely fixed to the supply part. The method of claim 1,
A laundry entry/exit hole through which laundry is taken out is formed in front of the cabinet,
Further comprising a gasket disposed between the cabinet and the tub and sealing the laundry entry/exit hole;
The first water supply pipe is connected to the gasket. The method of claim 1,
At least one of the first water supply pipe and the second water supply pipe is provided with a backflow prevention structure of a U-trap structure. The method of claim 1,
The first water supply pipe,
a U trap connected to the detergent box, storing a portion of wash water and preventing fluid from flowing backward;
A washing machine comprising: a connection part connected to the U-trap part and connected to the front side of the tub to supply wash water. The method of claim 4,
The washing machine according to claim 1 , wherein the detergent box is formed at a lower side, a supply unit for guiding wash water is formed, and the U-trap unit is located below the detergent box and is connected to the supply unit. The method of claim 4,
The connection part,
a bending connection portion connected to the front end of the U-trap portion, formed by bending in the left-right direction from the front-rear direction of the washing machine, and guiding wash water;
a horizontal connection portion connected to the bending connection portion and formed in a horizontal direction;
A washing machine comprising: an inclined connection part connected to the horizontal connection part and inclined downward to supply wash water to the front of the tub. The method of claim 1,
The washing machine is installed so that the second water supply pipe allows wash water to fall into the tub, and the falling wash water flows along the inner surface of the tub. The method of claim 1,
Further comprising a drum disposed inside the tub, loaded with laundry, and rotated with respect to the tub;
The washing machine disposed so that the wash water discharged from the second water supply pipe falls into the space between the tub and the drum. The method of claim 8,
The second water supply pipe is installed to flow wash water along the inner surface of the tub. The method of claim 7,
The second water supply pipe is connected to the tub in a vertical direction, and is arranged to supply wash water in a vertical direction. The method of claim 7,
A washing machine wherein a supply part formed in a vertical direction is formed in the tub, and the second water supply pipe is connected to the supply part. delete delete The method of claim 1,
The washing machine wherein the water guide is hooked and fixed to an upper end of the supply unit. The method of claim 1,
The washing machine of claim 1 , wherein the water guide further includes a guide portion having a water hole formed therein, the water hole guiding wash water to the water storage portion, and a lower end of the guide portion being submerged in the water storage portion. The method of claim 1,
The lower surface of the water storage unit is disposed on a curved surface forming a tub. The method of claim 1,
When viewed from the front of the washing machine, the lower surface of the water storage part is formed as a curved surface. The method of claim 1,
When viewed from the front of the washing machine, the lower surface of the water storage part is formed as a curved surface facing the side of the tub.

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