KR20170038528A - Washing machine - Google Patents

Abstract

The present invention relates to a washing machine, comprising: a cabinet forming an appearance; a tub arranged inside the cabinet, and storing washing water; a water supply unit supplying washing water to the tub; a detergent box supplied with washing water from the water supply unit to provide the washing water to the tub; a first water supply pipe supplying washing water of the detergent box to the front of the tub; and a second water supply pipe supplying the washing water of the detergent box to one of a side portion or a rear side of the tub. According to the present invention, the washing machine is advantageous in that the washing water can be separately supplied to at least one of the front side or the side portion of the tub, and the washing water can be prevented from falling directly on a laundry item when water is supplied.

Description

Washing machine

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a washing machine, and more particularly, to a washing machine capable of supplying washing water in two directions to a tub.

Generally, a washing machine is a device for washing through washing, rinsing, dehydration, etc. to remove contamination from clothes, bedding, etc. (hereinafter, referred to as "laundry") by using water, detergent and mechanical action.

The washing machine is roughly divided into an agitator type, a pulsator type, and a drum type washing machine.

In the agitating type, the washing rods rising in the center of the washing tub are washed by rotating the washing rods to the left and right, and the swirl type washing is performed by using the frictional force between the water stream and the laundry, Put water, detergent and laundry in the drum and wash it.

The drum washing machine includes a tub having an inside of a cabinet forming an outer appearance, a tub accommodating laundry therein, a drum disposed inside the tub, a driving unit for rotating the drum mounted on a rear side of the tub, And a drive shaft connected to the back surface side of the drum is formed. A lifter is installed inside the drum to plow laundry when the drum rotates.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a washing machine capable of supplying washing water in two directions to a tub.

Another object of the present invention is to provide a washing machine capable of temporarily storing a liquid detergent at the front water supply of washing water.

A further object of the present invention is to provide a washing machine capable of flowing along a wall surface of a tub at the time of side water supply of the washing water.

Another object of the present invention is to provide a washing machine capable of preventing the fluid in the tub from flowing backward when the washing water is supplied.

Another object of the present invention is to provide a washing machine capable of preventing washing water from falling directly into laundry when water is supplied to the washing machine.

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

According to an aspect of the present invention, there is provided a washing machine comprising: a cabinet forming an outer appearance; A tub disposed inside the cabinet and storing wash water; A water supply unit for supplying wash water to the tub; A detergent box receiving the wash water from the water supply unit and supplying the wash water to the tub; A first water supply pipe for supplying wash water of the detergent box to the front of the tub; And a second water supply pipe for supplying the washing water of the detergent box to one of a side portion and a rear portion of the tub.

And a gasket disposed between the cabinet and the tub for sealing the laundry inlet and outlet holes. The first water pipe may be connected to the gasket.

A reverse flow preventing 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 is connected to the detergent box and includes a U trap part for partially storing wash water and preventing reverse flow of the fluid; And 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 is formed downward, and a supply part for guiding the wash water is formed, and the U-trap part is located below the detergent box and can be connected to the supply part.

The connecting portion is connected to a front side end of the U-trap portion and is bent in a left-right direction in a front-rear direction of the washing machine, and has a bending connection portion for guiding the washing water. A horizontal connection portion connected to the bending connection portion and formed in a horizontal direction; And a sloping connection portion connected to the horizontal connection portion and sloping downward to supply wash water to the front of the tub.

The second water supply pipe may drop the washing water into the tub, and the falling wash water may be installed to flow wash water along the inner surface of the tub.

The washing machine may further include a drum disposed inside the tub and loaded with laundry therein and rotated with respect to the tub, and the washing water discharged from the second water supply pipe may be disposed to fall into a space between the tub and the drum have.

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

The second water supply pipe is vertically connected to the tub, and the second water supply pipe is arranged to supply the wash water in the vertical direction.

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

At least one of the second water supply pipe and the supply part may be provided with a backflow prevention structure.

The backflow preventing structure may include a water guide installed at the supply unit and guiding the wash water provided from the second water supply pipe to the tub side; A first backflow prevention flow path is formed between the water guide and the supply part and is spaced apart from the supply part by a predetermined distance and a second backflow prevention flow path is formed at a predetermined distance from the water guide, And a water storage part for storing a part of the washing water and being immersed in the washing water stored in the lower end of the water guide.

The water guide may be fixed to the upper end of the supply part.

The water guide may further include a guide portion having a water hole formed therein. The water hole guides the wash water to the water storage portion, and the lower end of the guide portion may be formed to be submerged in the water storage portion.

The lower surface of the water storage portion may be disposed on a curved surface forming the tub.

When viewed from the front of the washer, the lower surface of the water reservoir may be curved.

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

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

According to the washing machine and its control method of the present invention, one or more of the following effects can be obtained.

First, the washing machine according to the present invention is advantageous in that the washing water can be supplied to at least one of the front part and the side part of the tub.

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

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

Fourth, the washing machine according to the present invention is advantageous in that the liquid detergent is temporarily stored in the U-trap part at the time of front water supply.

Fifth, the washing machine according to the present invention has an advantage that the detergent or the fabric softener can be prevented from concentrating only on a specific laundry since the washing water does not fall directly onto the laundry.

Sixth, the washing machine according to the present invention is advantageous in that the detergent can be dissolved uniformly because the washing water sucks the laundry from the bottom of the tub.

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

Eighth, the washing machine according to the present invention is advantageous in that the oil separating partition is disposed in the dispenser so that the washing water can be supplied to the first supplying part or the second supplying part separately.

Ninthly, the washing machine according to the present invention is advantageous in that a swirl partition wall is formed in the dispenser so that rotational force can be added to washing water.

Tenth, the washing machine according to the present invention has an advantage that a tub avoiding portion is formed in the dispenser to avoid interference with the tub.

The eleventh aspect of the present invention is that the second supply portion is disposed on the rear side of the first space and the installation length of the second supply pipe for supplying the washing water to the side portion of the tub is minimized.

Twelfth, the washing machine according to the present invention is advantageous in that the washing water in the first space is quickly discharged because a separation distance is formed between the oil passage 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 can 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 sectional view of a washing machine according to an embodiment of the present invention.
3 is a perspective view illustrating an installation structure of a detergent box according to an embodiment of the present invention.
Fig. 4 is a left side view of Fig. 3; Fig.
5 is a perspective view of the lower body shown in Fig.
Fig. 6 is a plan view of Fig. 5. Fig.
7 is a perspective view of the first water supply pipe shown in Fig.
FIG. 8 is an enlarged sectional view of the second water supply pipe shown in FIG. 2. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the present invention will be described with reference to the drawings of Figs.

A washing machine according to an embodiment of the present invention includes a cabinet 10 for forming an outer appearance, a tub 20 for receiving washing water, a drum 20 disposed in the tub 20, (Not shown) for rotating the drum 30, a water supply unit 50 for receiving laundry water from an external water source and supplying the water to the tub 20, a detergent for washing, And a detergent box 60 for mixing water with the laundry detergent.

The cabinet 10 forms the appearance of the washing machine. A tub 20 is provided in the cabinet 10.

A laundry inlet / outlet hole 12 is formed on the front surface of the cabinet 10 so that laundry can be taken in and out. A door 15 is rotatably provided on the front surface of the cabinet 10 to open and close the laundry inlet / outlet hole 12.

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 wash water from leaking into the cabinet 10. The gasket 25 forms a laundry inlet / outlet hole 12. The door (15) is in close contact with the gasket (25). A part of the door 15 may be partially inserted into the gasket 25 side.

The cabinet 10 is provided with a control panel 13 for receiving commands from a user and displaying various status information of the washing machine. The cabinet 10 is provided with a detergent box 60 for detachably receiving a detergent such as laundry detergent, rinsing detergent or bleach.

The laundry is received in the drum 30 and rotated. A plurality of through holes 31 are formed in the drum 30 to allow the washing water to pass therethrough. On the inner wall of the drum 30, a lifter 32 for lifting the laundry at a predetermined height when the drum 30 is rotated can be disposed. The drum 30 is connected to a driving unit, and receives rotation of the driving unit to rotate.

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

The detergent box 60 receives detergents such as laundry detergent, rinse detergent or bleach. The detergent box 60 can be pulled out through the front surface of the cabinet 10.

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

In the present embodiment, the detergent box 60 supplies wash water to the tub 20 in two directions. The washing water in the detergent box 60 may be supplied to the front side of the tub 20. [ In addition, the washing water of the detergent box 60 can be supplied to the side surface of the tub 20.

The detergent box 60 includes a dispenser 110 in which a two-way water supply channel is formed 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. The water supply channel may be connected to the upper body 160 according to the shape, unlike the present embodiment.

The dispenser body 120 has a drawer access hole 125 formed in its front surface.

The lower body 150 and the upper body 160 are coupled to each other to form the drawer access hole 125.

The lower body 150 is in the form of a basket having an upper opening.

The lower body 150 has 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.

The first supply part 151 is formed to face downward.

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

The first supply part 151 and the second supply part 152 are separated by the oil passage partition wall 155.

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

In this embodiment, the passage separating partition wall 155 divides the inside of the lower body 150 in consideration of the washing water falling from the drawer 210.

Unlike the present embodiment, the flow path separation barrier rib 155 may be formed in the drawer 210. When the drawer 210 is formed with the oil passage partition wall 155, it may protrude downward from the lower side of the drawer 210.

The flow dividing barrier ribs 155 are formed by connecting the first barrier ribs 156 formed in the forward and backward directions and the second barrier ribs 156 formed in a diagonal line at the rear side of the first barrier ribs 156, 157).

The flow path separation barrier 155 prevents the wash water from overflowing into the adjacent space. Particularly, the flow path separation barrier 155 prevents the wash water dropped from the drawer 210 from flowing into the adjacent space. The fabric softener, detergent, etc. stored in the drawer 210 can be supplied into the tub 20 through the desired water supply channel.

The space in which the first supply part 151 is located is defined as the first space 121 and the space in which the second supply part 152 is located is defined as the second space 122. [

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

The first space 121 further includes a swirl partition 153 for guiding the wash water to the first supply part 151.

The swirl partition 153 improves the discharge speed of the wash water.

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

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

The swirl partition wall 153 guides the washing water flowing into the first supply part 151 to rotate. The washing water can be moved downward along the inner wall of the first supplying part 151 by the swirl partition wall 153.

In the present embodiment, the swirl partition wall 153 is formed so as to extend into the first supply part 151. The swirl partition 153 divides the inside of the first supply part 151 into two parts.

In the present embodiment, the swirl partition 153 divides the inside of the first supply part 151 in the front-back direction. The swirl partition 153 divides the first supply part 151 into a first swirl space 151a and a second swirl space 151b.

In the present embodiment, the swirl partition 153 separates the inlet side of the first supply part 151.

On the other hand, the second space 122 of the lower body 150 is formed with a turbulent skin 158 which is convex upward.

The lower body 150 can be as close as possible to the outer surface of the tub 20 by the tubular skin 158. The tubular skin 158 has an advantage of minimizing installation space of the detergent box 60 and the tub 20.

The first water supply pipe 130 and the second water supply pipe 140 are provided with a backflow preventing structure for preventing the backflow of the foam or steam inside the tub 20 to the detergent box 60.

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

The first water supply pipe (130) is provided with a structure for preventing steam or foam from flowing back to the detergent box (60).

In the present embodiment, the first water supply pipe 130 is provided 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 132 via a U-trap 132 where washing water or detergent is always stored. A connection part 134 connected to the front side of the U-shaped part 132 and a bridge part 136 formed on at least one of the U-shaped part 132 or the connecting part 134.

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

The U-trap part 132 stores wash water mixed with a predetermined amount of wash water or detergent. And the wash water stored in the U-trap portion 132 is supplied to the tub 20 by the wash water supplied additionally.

The U-trap portion 132 is disposed in the front-rear direction of the washing machine.

The U-trap portion 132 is installed so that its front side end faces forward.

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

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

The connection unit 134 may include a bending connection unit 134a connected to the front end of the U-trap unit 132 and a horizontal connection unit 134b connected to the bending connection unit 134a, And an inclined connection part 134c connected to the horizontal connection part 134b and inclined downward and connected to the tub 20. [

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

The U trap part 132 and the connection part 134 are disposed closely to the lower side of the lower body 150 to minimize the volume in the internal space of the washing machine.

The detergent supplied to the detergent box may be temporarily stored in the U-trap portion 132.

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

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

The vibration damper 136 prevents direct impact from being transmitted to the first water supply pipe 130 when vibration occurs in the washing machine.

In the present embodiment, the wearer's foot 136 includes a first leg portion 136a formed on the U-shaped portion 132 and a second leg portion 136b formed on the connecting portion 134. [

In the present embodiment, the first waveguide portion 136a is formed on the tub 20 side to buffer contact with the tub 20. The second leg portion 136b is formed on the connecting portion 134 to buffer the contact with the lower body 150. Unlike the present embodiment, its position can be changed according to the design.

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

At least a portion of the second water supply pipe 140 is formed with a bellows structure, which can buffer vibrations or changes in length.

The second water supply pipe (140) flows wash water through the inner surface of the tub (20). The second water supply pipe 140 drops into a space between the drum 30 and the tub 20. [ The washing water dropped from the second water supply pipe (140) flows downward along the inner surface of the tub (20).

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

The second water supply pipe (140) is provided with 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, a reverse flow preventive structure 170 having a U-trap structure is installed in the pipe instead of installing the U-trap on the pipe like the first water supply pipe 130 .

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 and the inside of the third supply part 23.

The backflow preventing structure 170 is installed inside the second water supply pipe 140 and guides the wash water flowing through the second water supply pipe 140 to the tub 20 side through a water hole 181 formed inside, The water guide 180 is disposed at a predetermined distance from the inner wall of the second water pipe 140 and partially stores washing water flowing through the second water pipe 140, And a water storage part 190 which is partially inserted and stored in the wash water.

The water guide 180 is arranged in the vertical direction. The water guide 180 may be installed in any one of the second supply pipe 140 and the third supply part 23. The second supply pipe 140 and the third supply unit 23 are connected to each other.

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

The water guide 180 includes a water guide body 182 which is engaged with the supply part 23 and a water hole 182 formed inside the guide body 182 for guiding the wash water toward the tub 20 181 are formed.

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

The guide portion 184 and the guide body 182 are formed to have different diameters. The diameter of the guide portion 184 is formed to be 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 part of the stored washing water is locked.

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

The first backflow prevention flow path 191 is formed between the water storage section 190 and the guide section 184 and the second backflow prevention flow path 192 is provided between the water storage section 190 and the third supply section 23, .

The first backflow prevention flow passage 191 and the second backflow prevention flow 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 part 190 is disposed on a continuous surface with the outer surface of the tub 20.

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

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

The wash water dropped from the second check flow passage 192 may be vertically dropped or may flow along the inner surface of the tub 20.

If the pressure of the supplied washing water is small, it can flow along the inner surface of the tub 20 by surface tension. In order to maximize the effect, it is preferable that the second check flow passage 192 is in close contact with the side of the tub 20 when viewed from the front of the washing machine.

As the second check flow passage 192 is closely attached to the side of the tub 20, the wash water can be more easily flowed along the inner side of the tub 20.

The second water supply pipe 140 may be installed to flow the washing water along the inner surface of the rear side of the tub 20, unlike the present embodiment.

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 and prevent the foam or steam inside the tub 20 from flowing into the detergent box 60.

The washing water stored in the U-trap 132 of the first water supply pipe 130 is prevented from entering the inside of the detergent box 60 due to the foam or steam inside the tub 20.

The washing water stored in the water storage unit 190 of the second water supply pipe 140 is prevented from entering the inside of the detergent box 60 by the foam or steam inside the tub 20. [

In this embodiment, the water supply unit 50 can separately supply the washing water into the first space 121 and the second space 122 of the detergent box 60.

In the present embodiment, the washing water for the main washing is supplied to the first space 121. In this embodiment, the fabric softening agent or wash water for free water supply is supplied to the second space 122.

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

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

Likewise, the wash water supplied to the second space 122 for the free-water or rinsing detergent may be supplied to the side or rear of the tub 20. The washing water flows down along the inner surface of the washing water tub 20 supplied to the tub 20 through the second water supply pipe 140 or falls into the space between the tub 20 and the drum 30, .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

10: cabinet 20: tub
23: third supply part 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 136:
140: second water pipe 150: lower body
160: Upper body 151: First supply part
152: second supply unit 153: swirl barrier
155: flow path separation barrier 156: first partition
157: second bulkhead 158: terbricular skin
170: Backflow prevention structure 180: Water guide
181: Water hole 182: Water guide body
184: Guide section 190: Water storage section
191: first backflow prevention flow passage 192: second backflow prevention flow passage
195: Lower side

Claims (18)

A cabinet forming an appearance;
A tub disposed inside the cabinet and storing wash water;
A water supply unit for supplying wash water to the tub;
A detergent box receiving the wash water from the water supply unit and supplying the wash water to the tub;
A first water supply pipe for supplying wash water of the detergent box to the front of the tub;
And a second water supply pipe for supplying the washing water of the detergent box to one of a side portion and a rear portion of the tub. The method according to claim 1,
A laundry inlet / outlet hole is formed in front of the cabinet,
Further comprising a gasket disposed between the cabinet and the tub and sealing the laundry access hole,
And the first water pipe is connected to the gasket. The method according to claim 1,
Wherein at least one of the first water supply pipe and the second water supply pipe has a backflow preventing structure of a U-trap structure. The method according to claim 1,
Wherein the first water supply pipe
A U trap part connected to the detergent box, the U trap part storing a part of wash water and preventing back flow of the fluid;
And a connection part connected to the U-trap part and connected to the front side of the tub to supply washing water. The method of claim 4,
Wherein the detergent box is formed on the lower side, and a supply part for guiding the wash water is formed, and the U-trap part is located below the detergent box and connected to the supply part. The method of claim 4,
The connecting portion
A bending connection part connected to a front side end of the U-trap part and bent in a left-right direction in a front-rear direction of the washing machine, the bending connection part guiding wash water;
A horizontal connection portion connected to the bending connection portion and formed in a horizontal direction;
And a slant connection portion connected to the horizontal connection portion and sloping downward to supply wash water to the front of the tub. The method according to claim 1,
Wherein the second water supply pipe drops the wash water into the tub and the wash water falls down along the inner surface of the tub. The method according to claim 1,
Further comprising a drum disposed inside the tub, in which laundry is loaded and rotated with respect to the tub,
And the washing water discharged from the second water supply pipe is disposed to fall into a space between the tub and the drum. The method of claim 8,
And the second water supply pipe is installed to allow the wash water to flow along the inner surface of the tub. The method of claim 7,
Wherein the second water supply pipe is vertically connected to the tub and is arranged to supply the water in the vertical direction. The method of claim 7,
Wherein the tub is provided with a supply portion formed in a vertical direction, and the second water supply pipe is connected to the supply portion. The method of claim 7,
Wherein at least one of the second water supply pipe and the supply unit is provided with a backflow prevention structure. The method of claim 12,
In the backflow prevention structure,
A water guide installed in the supply unit and guiding the wash water provided in the second water supply pipe to the tub side;
A first backflow prevention flow path is formed between the water guide and the supply part and is spaced apart from the supply part by a predetermined distance and a second backflow prevention flow path is formed at a predetermined distance from the water guide, And a water storage part for storing a part of the washing water and being immersed in the washing water stored in the lower end of the water guide. 14. The method of claim 13,
And the water guide is hooked on the upper end of the supply part. 14. The method of claim 13,
Wherein the water guide further comprises a guide portion having a water hole formed therein, the water hole guiding the wash water to the water storage portion, and the lower end of the guide portion being locked to the water storage portion. 14. The method of claim 13,
And the lower surface of the water storage portion is disposed on a curved surface forming the tub. 14. The method of claim 13,
A washing machine as set forth in claim 1, wherein the lower surface of the water storage portion is curved. 14. The method of claim 13,
And a lower surface of the water storage portion is formed as a curved surface facing the side surface of the tub when viewed from the front side of the washing machine.

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