JP7142211B2 - washing machine - Google Patents

Description

The present invention relates to a washing machine for washing clothes.

2. Description of the Related Art In recent years, in fully automatic washing machines, the number of types of detergents has increased, and the number of mechanisms equipped with a drawer-type detergent case in the upper part of the washing machine has increased so that the user can easily put detergent and softener into the washing machine. In this mechanism, a three-in-one configuration, in which powder detergent, liquid detergent, and softener containers are arranged side by side, is the mainstream.

However, in order to meet the above requirements within a limited area due to the structure of the fully automatic washing machine, the volume of each container is generally small and the container is generally rectangular and vertically long. Constructed with a small volume, each container presents the problem of spilling different agents into adjacent containers when detergent is added.

In addition, when dissolving detergent, the water injection route is also limited, and it is difficult to dissolve all the detergent that scatters during water injection. provoke.

JP 2017-000312 A

Therefore, it is desirable to provide a washing machine which has a simple configuration, improves the detergent charging performance, prevents the scattering of the powder detergent, and prevents the powder detergent from being left undissolved in the detergent case even when the water flow rate is low. aim.

In order to solve the above-mentioned conventional problems, the washing machine of the present invention comprises an upper housing which constitutes the upper portion of the washing machine and has an inlet for inserting clothes, and a water supply unit formed at the rear of the inlet. a detergent case that constitutes a part of the water supply unit and is formed so as to be freely pulled out from the rear part of the inlet; a channel structure part that constitutes a part of the water supply unit and supplies water to the detergent case; a washing tub for performing a washing operation of washing the clothes in which clothes are put in through an inlet, wherein the detergent case is formed on the inlet side and receives powdered detergent; and the powdered detergent. A liquid detergent case into which liquid detergent is put and a softener case into which softener is put are provided side by side at the rear of the case, and the detergent case is arranged between the liquid detergent case and the softener case. A narrow passage is provided for discharging water in the powder detergent case to the rear, and both sides of the narrow passage are formed by the side wall of the liquid detergent case and the side wall of the softener case .

According to the present invention, there is provided a washing machine which has a simple structure, improves the detergent charging performance, prevents the powder detergent from scattering, and prevents the powder detergent from being left undissolved in the detergent case even when the water flow rate is low. can provide.

Schematic perspective view of a washing machine according to Embodiment 1 of the present invention The perspective view of the upper housing|casing and cover body of the same washing machine. Schematic structural drawing of the washing machine Perspective view of the water supply unit of the washing machine An exploded perspective view of the water supply unit of the washing machine. A plan view of the water supply unit of the washing machine, excluding the flow path cover A plan view of the water supply unit of the washing machine, excluding the flow path structure A plan view of the water supply unit of the washing machine, excluding the flow path structure and the detergent case AA sectional view of FIG. Top view of the detergent case of the washing machine (a) BB cross-sectional view of FIG. 10 (b) CC cross-sectional view of FIG.

A first invention comprises an upper housing that constitutes the upper part of a washing machine and has a loading port for loading clothes, a water supply unit formed at the rear of the loading port, and a part of the water supply unit that constitutes the above-described washing machine. a detergent case that can be pulled out from a rear portion of an inlet; a channel structure part that constitutes a part of the water supply unit and supplies water to the detergent case; The detergent case includes a powder detergent case formed on the inlet side and into which the powder detergent is introduced, and a liquid detergent into which the liquid detergent is introduced at the rear of the powder detergent case. A detergent case and a softener case into which softener is put are provided side by side , and the detergent case discharges the water in the powder detergent case rearward between the liquid detergent case and the softener case. The washing machine has a narrow flow path formed by the side wall of the liquid detergent case and the side wall of the softener case on both sides of the narrow flow path. In addition, it is possible to provide a washing machine in which powder detergent is prevented from scattering, and the powder detergent in the detergent case is less likely to remain undissolved even when the flow rate of water injection is low.

In a second aspect of the invention, in particular, the upper edge of the powder detergent case of the first aspect is formed such that corners on four sides are rounded, and the powder detergent case extends downward inward from the upper edge to the bottom surface. The washing machine surrounded by the inclined high walls prevents the powder detergent from scattering and prevents the powder detergent from being left undissolved in the detergent case even when the water injection flow rate is low.

In a third aspect of the invention, in particular, the narrow flow path of the second aspect of the invention is a washing machine provided behind the central portion of the powder detergent case, thereby preventing scattering of the powder detergent and increasing the amount of water injected. It is possible to provide a washing machine in which the powder detergent in the detergent case is less likely to remain undissolved even when the flow rate of the detergent is low.

In a fourth invention, the water supply unit of the second or third invention is provided with a first water injection path for injecting water into the detergent case, and the first water injection path injects water along the high wall. By providing a washing machine having a plurality of first holes, it is possible to prevent scattering of the powder detergent and to provide a washing machine in which the powder detergent in the detergent case is less likely to remain undissolved even when the water injection flow rate is low.

In a fifth invention, particularly, the rear end of the narrow flow path of any one of the second to fourth inventions is a bent portion with a rib so as to wrap around the softener case or the liquid detergent case behind the softener case or the liquid detergent case. By providing a washing machine with a slit at the tip, even if foreign matter enters the powder detergent case, the bent portion and the rib can secure the foreign matter and the foreign matter flows into the washing tub. can be prevented.

An exemplary washing machine is described below with reference to the accompanying drawings. A washing machine can be clearly understood by the following description. Directional terms such as "up", "down", "left" and "right" are merely for clarity of explanation. Therefore, these terms should not be construed as limiting. Various functions associated with the washing function in no way limit the principles of the embodiments described below.

(Embodiment 1)
(Washing machine structure)
1 is a schematic perspective view of a washing machine according to Embodiment 1 of the present invention, FIG. 2 is a perspective view of an upper housing and a lid of the washing machine, and FIG. 3 is a schematic diagram of the washing machine. It is a structural diagram.

The washing machine 100 will be described with reference to FIGS. 1 and 2. FIG. Note that the washing machine 100 according to the present embodiment has not only a washing function of washing clothes, but also a drying function. In another embodiment, the washing machine 100 may not have a drying function.

Washing machine 100 includes housing 600 , lid body 700 , and operation panel section 800 .

Housing 600 houses various members for washing and drying operations of washing machine 100 . The housing 600 has a substantially rectangular parallelepiped shape. Housing 600 includes a lower housing 610 and an upper housing 620 . The upper housing 620 is arranged above the lower housing 610 . A washing tub 500 is accommodated in the lower housing 610 . The washing tub 500 is a cylindrical body with an upper opening, and performs a washing operation for washing clothes. The washing action may be the action performed by the washing tub of various known washing machines. The principles of this embodiment are not limited to any particular cleaning action performed by washing tub 500 .

Lid 700 is attached to upper housing 620 . The lid body 700 rotates up and down on the upper housing 620 . As shown in FIGS. 1 and 2, the user can rotate the lid 700 upward. An inlet 621 is formed in the upper housing 620 . When the user turns lid 700 upward, washing tub 500 is exposed through inlet 621 . A user can put clothes into washing tub 500 through inlet 621 .

Washing machine 100 also includes washing tub cover 510 . Washing-tub cover 510 is arranged rotatably with respect to washing-tub 500 so as to cover above washing-tub 500 . In FIG. 1, the washing-tub cover 510 is closed and the washing-tub 500 is sealed. In this state, washing machine 100 is enabled to perform a drying operation. On the other hand, when the user puts clothes into the washing tub 500 through the loading port 621, the front end of the washing tub cover 510 is rotated by using a fulcrum portion (not shown) arranged on the rear end side of the washing tub cover 510 as a fulcrum. side rotates upwards. As a result, the washing tub 500 communicates with the inlet 621 .

The operation panel section 800 is arranged behind the inlet 621 in the upper housing 620 . A user can operate the operation panel unit 800 to set various operations of the washing tub 500 .

(Water supply structure)
Referring to FIG. 3 , washing machine 100 includes water inlet 200 , water supply unit 300 and detergent case 400 . A user can supply water to washing machine 100 from water supply port 200 . The water passes through the water supply unit 300 and the detergent case 400 in order and reaches the washing tub 500 .

Detergent case 400 generates detergent liquid from water and detergent. The detergent case 400 has a handle portion 440 (FIGS. 1 and 2). A handle portion 440 of the detergent case 400 faces the inlet 621 . Therefore, the user can access the detergent case 400 by turning the lid 700 upward.

Detergent case 400 further includes powder detergent case 410 , bleach case 420 and softener case 430 . A user can store powdered detergent in the powdered detergent case 410 . A user can store bleach in the bleach case 420 . The user may store softener or other finishes to work with the fabric fibers in the softener case 430 . The structure of the detergent case 400 will be further detailed later.

The water supply unit 300 includes a water supply valve 310 and a channel structure 320 . The water supply unit 300 has a function of causing the detergent liquid to flow down into the washing tub 500 . The water supply valve 310 switches the water path between the first path FP toward the powder detergent case 410 and the bleach case 420 and the second path SP toward the softener case 430 . In this embodiment, even if the water pressure of the tap water supplied from the water supply port 200 changes, the water supply valve 310 allows the water to flow through the first path FP or the second path SP at a rate of 5 liters to 15 liters per minute. supply.

Flow path structure 320 defines a flow path for supplying water to powder detergent case 410 and bleach case 420 of detergent case 400 . When water supply valve 310 opens first path FP, water is supplied to powder detergent case 410 and bleach case 420 through channel structure 320 . As a result, the powder detergent in powder detergent case 410 and the bleach in bleach case 420 are mixed with water. Powder detergent and liquid detergent are supplied to washing tub 500 together with water. The washing tub 500 can agitate the clothes in an aqueous solution of powder detergent and liquid detergent to wash the clothes.

On the other hand, when water supply valve 310 opens second path SP, water is supplied to softener case 430 . The finish in softener case 430 is mixed with water. The finishing agent is supplied to the washing tub 500 together with water. The washing tub 500 can rinse the garments in an aqueous solution of the finish to impart desired properties (eg, softness) to the garments.

(Structure of water supply unit)
4 is a perspective view of the water supply unit 300 of the washing machine according to Embodiment 1 of the present invention, and FIG. 5 is an exploded perspective view of the water supply unit of the same washing machine.

The water supply unit 300 has a housing 250 . The housing 250 is a main body portion of the water supply unit 300 and has a substantially rectangular parallelepiped shape as shown in FIG. Further, the water supply unit 300 includes a first water conduit 311 , a second water conduit 312 , a third water conduit 313 , a bus pump 314 , and a water conduit 314 , which are attached to the rear end of the housing 250 . and an attached drainage path 550 . In this embodiment, the drain is exemplified by drain path 550 .

The water supply supplied from the water supply port 200 communicates with the first water conduit 311 , the second water conduit 312 and the third water conduit 313 . The first water conduit 311 may be the upstream end of the first path FP described with reference to FIG. The second water conduit 312 may be the upstream end of the second path SP described with reference to FIG. In the water supply unit 300 , the third water conduit 313 conducts water to a path different from that of the first water conduit 311 and the second water conduit 312 . The water supply valve 310 described with reference to FIG. 3 is attached to the first water conduit 311 and the second water conduit 312 . While the water supply valve 310 opens the first water conduit 311, the second water conduit 312 is closed. While the water supply valve 310 opens the second water conduit 312, the first water conduit 311 is closed. When the washing operation using the detergent is performed in the washing tub 500, the first water conduit 311 is opened. Also, when the rinsing operation is performed in the washing tub 500, the second water conduit 312 is opened. In addition, when the rinsing operation is performed, the first water conduit 311 and the second water conduit 312 may be opened alternately.

The bus pump 314 communicates with the first path FP. The bath pump 314 is connected to a bath water supply port (not shown) and supplies bath water to the detergent case 400 .

Referring to FIG. 5, channel structure portion 320 includes channel cover portion 340 and channel forming portion 360 in which channel 350 is formed. The flow path structure portion 320 is formed by heat-sealing the flow path lid portion 340 and the flow path formation portion 360 together.

(Structure of flow path forming part/flow path)
FIG. 6 is a plan view of the water supply unit of the washing machine according to Embodiment 1 of the present invention, excluding the channel cover.

The channel forming portion 360 defines the upper portion of the storage box 330 . The channel forming portion 360 includes a channel 350 . The flow path 350 includes a first flow path 351 to which water is supplied from the first water conduit 311 of the water supply valve 310 and a second flow path 352 through the first hole portion 371 . and a hole 372 . In addition, without passing through the first hole 371, it passes through the third flow path 353 to pour water into the bleach case 420, and the flow path forming part 360 passes through the fourth flow path 354. A fourth hole 374 (see FIG. 9) formed at the tip of a projecting portion 370 extending downward from the bottom surface of the dryer and ejected into the drainage path 550, and a fifth hole 375 for injecting water into the drying unit. A fifth flow path 355 for supplying water from the second water conduit 312 of the water supply valve 310 is provided, and a sixth hole 376 for pouring water into the softener case 430 and a seventh hole 377 for pouring water into the powder detergent case 410 are provided. Prepare. Further, a sixth flow path 356 through which water sucked by the bus pump 314 passes is provided, and an eighth hole 378 is provided.

(Housing structure)
7 is a plan view of the water supply unit of the washing machine according to Embodiment 1 of the present invention, excluding the flow path structure, and FIG. 8 is a plan view of the water supply unit of the washing machine, excluding the flow path structure and the detergent case. FIG. 9 is a sectional view taken along the line AA of FIG. 7. FIG.

The housing 250 is configured by nail-fitting and/or screwing the passage structure 320 and the storage box 330 . The detergent case 400 is attached to the case insertion part 331 provided in the storage box 330 toward the rear. For this reason, the front portion of the case insertion portion 331 (accommodating box 330) is open. Detergent liquid and/or water flows into container box 330 from channel structure 320 and/or detergent case 400 . Further, in this embodiment, the lower portion of the storage box 330 functions as a running water section.

Storage box 330 is provided with drainage path 550 below detergent case 400. Drainage path 550 receives water or detergent liquid from first water flow portion 333 and second water flow portion 334 of storage box 330, discharge towards. The drainage path 550 includes a bellows portion 551 , a drainage port 552 and a check valve 553 . The bellows portion 551 is arranged in the upstream portion of the drainage path 550 . The drain port 552 is arranged in the downstream portion of the drain path 550, and water or detergent liquid is discharged downward. The drain port 552 is arranged behind the washing-tub cover 510 (FIG. 1) and communicates directly with the washing-tub 500 . The check valve 553 is a valve that can be opened and closed at the drain port 552 . When the drying operation is performed in the washing tub 500, the pressure inside the washing tub 500 causes the check valve 553 to close. On the other hand, when water is supplied from the water supply unit 300 to the washing tub 500, the check valve 553 is opened by the pressure of the water. In the vicinity of the check valve 553, the cross-sectional area of the water flow path is partially reduced. The water in the storage box 330 flows into the washing tub 500 from the first water flow portion 333 and the second water flow portion 334 of the storage box 330 through the bellows portion 551 , the drain port 552 and the check valve 553 .

(Structure of detergent case)
10 is a top view of the detergent case of the washing machine according to Embodiment 1 of the present invention, FIG. 11(a) is a cross-sectional view along BB in FIG. 10, and FIG. 11(b) is CC in FIG. It is a sectional view.

Description will be made with reference to FIGS. 9 to 11. FIG. The detergent case 400 has a handle portion 440 and can be taken out from the storage box 330 by pulling the handle portion 440 . The detergent case 400 has a powder detergent case 410 on the front, and a bleach case 420 and a softener case 430 on the left and right sides of the powder detergent case 410. - 特許庁

The upper edge of the powder detergent case 410 has an elliptical shape 411, and the rounded corners 413 of the four sides all draw large arcs. The powder detergent case 410 has a height difference, and an elliptical shape 411 is surrounded by steep high walls 412 compared to the bottom surface into which the powder detergent is put.

A bleaching agent case 420 and a softening agent case 430 are provided on the left and right behind the powder detergent case 410, and a narrow flow path 414 is provided so as to pass between them. Narrow channel walls 415 are provided on the left and right sides of the narrow channel 414 .

The bleaching agent case 420 is composed of a bleaching agent lid portion 421 and a bleaching agent circular tubular shape 422. The bleaching agent lid portion 421 and the bleaching agent tubular shape 422 are fitted to form a siphon shape. Then, when the bleaching agent case 420 is filled with water at the time of supplying water, the bleaching agent flows out from the inside of the bleaching agent case 420.例文帳に追加

Similarly, as shown in FIG. 9, the softener case 430 is composed of a softener lid portion 431 and a softener lid circular tubular shape 432. By fitting with the shape 432 to form a siphon shape, water is supplied from the second water conduit 312 during water supply, and the softener case 430 flows out of the softener case 430 when the softener case 430 is filled with water. . The timing of turning on the second water conduit 312 and injecting water into the softener case 430 is adjusted so that the softener is supplied during rinsing in the washing sequence.

The bottom surfaces of the powder detergent case 410 and the narrow flow path 414 slope downward from the front to the rear. This is for making the powder detergent easier to flow. At the rear end of the narrow flow path 414, a bent portion 417 is provided with a rib 416 so as to extend behind the softener case 430, and a slit portion 418 is provided at the tip thereof. The detergent liquid climbs over the ribs 416 and falls into the storage box 330 through the slits 418 . After the water supply is stopped, the water drops from the slit portion 418, so that the residual water does not remain.

In addition, since the rear end of the narrow flow path 414 is provided with a bent portion 417 with a rib 416 so as to wrap around to the rear of the softener case 430, a foreign object (for example, a hairpin) may enter the powder detergent case 410. Even so, the bent portion 417 and the rib 416 can secure the foreign matter and prevent the foreign matter from flowing into the storage box 330 , the drainage path 550 and the washing tub 500 .

In the present embodiment, the rear end of narrow channel 414 is formed so as to wrap around to the rear of softener case 430 , but the rear end of narrow channel 414 is formed to wrap around to the rear of bleach case 420 . Even if it is formed, it can have an equivalent effect.

(Mechanism of water flow)
The flow of water to the water supply unit 300 will be explained.

In the washing process, the first water conduit 311 is opened by driving the water supply valve 310, and water flows into the first path FP. Water flowing in from the first path FP passes through the first flow path 351 , is throttled by the first hole 371 , and is supplied to the second flow path 352 .

The water that has passed through the second flow path 352 is injected into the powder detergent case 410 from five locations of the second holes 372 formed above the high wall 412 . The powdered detergent put into the powdered detergent case 410 is dissolved while being concentrated in the central portion of the powdered detergent case 410 by water poured from above the high wall 412 of the elliptical shape 411 of the powdered detergent case 410 . When the water flow rate is high and the water injection pressure is high, the powder detergent scatters to the four corners due to the water injection pressure. Since the water is poured from the portion 372 toward the outer peripheral portion of the elliptical shape 411, the effect of preventing undissolved portions at the corners can be obtained.

Also, the powder detergent is discharged to the narrow flow path 414 as a drainage path while being concentrated in the center of the powder detergent case 410 . The narrow channel 414 has a narrower channel area than the elliptical shape 411 of the powder detergent case 410, the surrounding high wall 412 and the narrow channel wall 415 are high, and the water accumulated by pouring water is at a high position. The energy is harnessed to flow into the narrow channel walls 415 . Since the narrow channel wall 415 drains water toward the back of the product at a constant speed, the powdered detergent accumulated on the bottom surface of the powdered detergent case 410 also dissolves and moves along a constant flow direction, so that it dissolves even at a low flow rate. It becomes the composition with few remainders.

Next, the water that has passed through the first flow path 351 but has not passed through the first hole 371 is divided into the third flow path 353 and the fourth flow path 354 . The water flowing to third flow path 353 is injected from third hole 373 into bleach case 420 of detergent case 400 . The bleach case 420 is filled with water by pouring water from the third hole 373, and is drained toward the drain path 550 on the back of the storage box 330 by the circular siphon shape formed by the bleach cover 421. .

The water diverted to the fourth flow path 354 is poured into the fifth hole 375 connected to the drying path, passes through a heat exchanger (not shown in the drawings), and washes away dirt and dust accumulated in the heat exchanger. At the same time, the water is also injected into the fourth hole portion 374 formed at the tip of the projecting portion 370 and ejected to the drainage path 550 . Since the water injected into the drainage path 550 is ejected from the sixth hole 376 with a difference in height, the injection pressure becomes higher than that of the other holes, and the speed to the drainage path 550 in the open state increases. It rises and is ejected.

Water from the fourth hole 374 , which is ejected at an increased speed as it falls from the fourth flow path 354 to the projection 370 , dissolves and flows from the powder detergent case 410 and flows into the foaming space 332 . Collision and agitation at (the drainage path 550 and the bottom of the storage box 330) causes air to be contained and bubbling to occur. The foamed detergent liquid passes through the bellows portion 551 , the drain port 552 and the check valve 553 and is thrown into the washing tub 500 . The foamed detergent liquid falls directly on the clothes in the washing tub 500 . By expanding the surface area of the surfactant with the foam, the probability of the surfactant adhering to the dirt on the clothes is increased, and the effect of quickly removing the dirt is enhanced.

The flow velocity of water ejected from the fourth hole portion 374 is mainly determined by the amount of water stored in the internal space of the projecting portion 370 . Even if the flow rate of the tap water supplied from the water supply valve 310 fluctuates, the water falls from the fourth flow path 354 to the projecting portion 370 and is ejected from the fourth hole portion 374. A stable stirring force is applied to the detergent liquid in the foaming space 332 . In addition, since the detergent liquid is agitated by the force of the linearly jetted water, a large amount of water is not consumed for the agitating function.

Next, in the rinsing process, the second water conduit 312 is opened by driving the water supply valve 310, and water flows into the second path SP. The water supplied from the second water conduit 312 passes through the fifth channel 355 and is injected into the sixth hole 376 and the seventh hole 377 . Then, water is poured into the softener case 430 of the detergent case 400 through the sixth hole 376 and into the powder detergent case 410 through the seventh hole 377 . The softener case 430 is filled with water by pouring water from the seventh hole 377 , and is drained toward the drain path 550 on the rear surface of the storage box 330 by the siphon circular tube shape formed by the softener cover 431 . .

By driving the second water conduit 312 , it is possible to switch to the first water conduit 311 , thereby avoiding mixing of the detergent liquid and the softener in the washing tub 500 . After washing and rinsing the clothes with the first water tube 311 and removing the residual detergent liquid from the clothes, the second water tube 312 is activated in the final rinsing process to pour the softener into the washing tub 500. It is possible to put it in and increase the finishing effect.

The bath pump 314 is used to reuse pooled water such as bath water. First, the first water pipe 311 is activated by the water supply valve 310 to fill the bath pump, called priming water, with water to prevent the rotor of the bath pump from idling and to suck up the accumulated water. After being filled with priming water, the bus pump 314 pumps up the accumulated water by driving the rotor.

The sucked water passes through the sixth channel 356 and is injected from the eighth hole 378 . Water is poured into the powder detergent case 410 in the detergent case 400 to dissolve the detergent and drained to the drain path 550 .

In the above-described embodiment, the bleaching agent case 420 for charging the bleaching agent is described, but the case may be a liquid detergent charging case for charging not only the bleaching agent but also the liquid detergent.

The principle of this embodiment can be suitably applied to various devices having a washing function.

100 washing machine 200 water supply port 250 housing 300 water supply unit 310 water supply valve 311 first water conduit 312 second water conduit 313 third water conduit 314 bus pump 320 flow path structure 330 storage box 331 case insertion section 332 foaming space 333 third 1st running water part 334 2nd running water part 340 Channel lid part 350 Channel 351 First channel 352 Second channel 353 Third channel 354 Fourth channel 355 Fifth channel 356 Sixth channel 360 Channel formation Part 370 Projection 371 First hole 372 Second hole 373 Third hole 374 Fourth hole 375 Fifth hole 376 Sixth hole 377 Seventh hole 378 Eighth hole 400 Detergent case 410 Powder detergent Case 411 Elliptical shape 412 High wall 413 R-shaped corner 414 Narrow channel 415 Narrow channel wall 416 Rib 417 Bend 418 Slit 420 Bleach case (liquid detergent case)
421 Bleach Lid 422 Bleach Cylindrical Shape 430 Softener Case 431 Softener Lid 432 Softener Lid Cylindrical Shape 440 Handle 500 Washing Tub 510 Washing Tub Cover 550 Drain Path 551 Bellows Part 552 Drain 553 Check Valve 600 housing 610 lower housing 620 upper housing 621 slot 700 cover 800 operation panel

Claims (5)

An upper housing that constitutes the upper part of the washing machine and has a loading port for loading clothes, a water supply unit formed behind the loading port, and a portion of the water supply unit that is pulled out from the rear of the loading port. A freely formed detergent case, a flow path structure forming part of the water supply unit and supplying water to the detergent case, and a washing operation in which clothes are put in through the inlet and the clothes are washed. and a washing tub to carry out,
The detergent case includes a powder detergent case formed on the inlet side and into which powder detergent is introduced, a liquid detergent case into which liquid detergent is introduced, and a softener case into which softener is introduced behind the powder detergent case. , set side by side ,
The detergent case is provided with a narrow flow path between the liquid detergent case and the softener case for discharging water in the powder detergent case backward,
The washing machine , wherein both sides of the narrow flow path are formed by a side wall of the liquid detergent case and a side wall of the softener case . 2. The powder detergent case is surrounded by a high wall that slopes inward downward from the upper edge to the bottom of the powder detergent case. Washing machine as described. The washing machine according to claim 1 or 2, wherein the narrow flow path is provided behind the central portion of the powder detergent case . 3. The water supply unit according to claim 2 , wherein the water supply unit is provided with a first water injection path for injecting water into the detergent case, and the first water injection path is provided with a plurality of first holes for injecting water along the high wall . washing machine. 5. A rear end of said narrow passage is provided with a bent portion with a rib so as to wrap around to the rear of said softener case or said liquid detergent case, and a slit portion is provided at the tip thereof. a washing machine as described above.

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