WO2015151389A1

WO2015151389A1 - Washing machine

Info

Publication number: WO2015151389A1
Application number: PCT/JP2015/000709
Authority: WO
Inventors: 野町　哲治; 吉田　清信; 和浩田村; 正犬塚; 直夫長谷
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2014-03-31
Filing date: 2015-02-17
Publication date: 2015-10-08
Also published as: MY171875A; CN106164362A; CN108118495A; CN106164362B; SG10201709281PA; CN108118495B; SG11201607919RA

Abstract

A washing machine is provided with a detergent case (400) in which a first housing chamber (410) for housing a detergent therein is formed, and a flow channel structure part which forms a flow channel on the detergent case (400). In the flow channel structure part, a plurality of falling holes which direct water in the flow channel toward the detergent case (400) are formed. The detergent case (400) includes a partition wall (414) which partitions the first housing chamber (410) into a mixing chamber (412) in which a water solution of the detergent is produced by mixing the detergent and the water, and a foaming chamber (413) in which the water solution flowing therein from the mixing chamber (412) is foamed. The plurality of falling holes include a first falling hole which directs the water to the mixing chamber (412), and a second falling hole which directs the water to the foaming chamber (413).

Description

Washing machine

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

A conventional washing machine includes a detergent case having a storage chamber in which detergent is accommodated and a flow path structure that allows water to flow into the detergent case (see Patent Documents 1 to 3). The detergent is dissolved in water in the containment chamber. As a result, an aqueous solution of the detergent is generated. The detergent aqueous solution is foamed in the storage chamber (see Patent Document 4).

The conventional chamber of the detergent case has a function of generating an aqueous solution of the detergent and a function of foaming the aqueous solution. Since the generation of the aqueous solution and the bubbling of the aqueous solution are performed in a common storage chamber, there is a problem that the aqueous solution tends to flow out of the detergent case before the aqueous solution is sufficiently bubbled.

JP 2008-99920 A Japanese Patent Laid-Open No. 2-1091 JP 2000-342894 A JP 2008-99919 A

An object of the present invention is to provide a washing machine capable of supplying a sufficiently foamed aqueous solution of a detergent for washing clothes.

The washing machine of the present invention includes a detergent case in which a first storage chamber in which a detergent is stored is formed, and a flow path structure portion that forms a flow path on the detergent case. In addition, the flow path structure portion is formed with a plurality of flow holes for directing water in the flow path toward the detergent case. Furthermore, the detergent case includes a partition wall that partitions the first storage chamber into a mixing chamber in which an aqueous solution of the detergent is generated by mixing the detergent and water, and a foaming chamber in which the aqueous solution flowing from the mixing chamber is bubbled. Yes. Further, the plurality of downflow holes include a first downflow hole that directs water to the mixing chamber and a second downflow hole that directs water to the foaming chamber.

The washing machine according to the present invention can wash clothes using a sufficiently foamed detergent aqueous solution.

FIG. 1 is a schematic block diagram of an exemplary washing machine. FIG. 2 is a schematic perspective view of the water supply unit of the washing machine shown in FIG. FIG. 3A is a schematic perspective view of a water supply box of the water supply unit shown in FIG. 2. FIG. 3B is a schematic side view of the water supply box shown in FIG. 3A. FIG. 4 is a schematic perspective view of the water supply box shown in FIG. 3B. FIG. 5 is a schematic cross-sectional view of the weir wall of the water supply box shown in FIG. FIG. 6 is a schematic perspective view of the detergent case of the washing machine shown in FIG. FIG. 7 is a schematic plan view of the water supply box shown in FIG. FIG. 8 is a schematic exploded perspective view of the detergent case shown in FIG. FIG. 9A is a schematic cross-sectional view of the water supply box shown in FIG. 7. FIG. 9B is a schematic perspective view of the water supply box shown in FIG. 7. FIG. 10 is a schematic perspective view of the washing machine shown in FIG. FIG. 11 is a schematic perspective view of the washing machine shown in FIG. 12 is a schematic cross-sectional view of the washing machine shown in FIG. FIG. 13 is a schematic perspective view of the lid of the water supply box shown in FIG. 3B. FIG. 14A is a schematic perspective view of the washing machine shown in FIG. 1. FIG. 14B is a schematic cross-sectional view of the washing machine shown in FIG. 14A. FIG. 15A is a schematic cross-sectional view of the detergent case shown in FIG. FIG. 15B is a schematic cross-sectional view of the detergent case shown in FIG. 6. FIG. 16A is a schematic plan view of another detergent case including a rib structure. FIG. 16B is a schematic plan view of still another detergent case including a rib structure.

DETAILED DESCRIPTION Exemplary washing machines are described below with reference to the accompanying drawings. The washing machine can be clearly understood by the following description. The terms representing directions such as “up”, “down”, “left” and “right” are merely for the purpose of clarifying the explanation. Accordingly, these terms should not be construed as limiting. The washing machine may have not only a washing function for washing clothes but also a drying function. Various functions associated with the washing function do not limit the principle of the embodiments described later.

<Water supply structure>
FIG. 1 is a schematic block diagram of an exemplary washing machine 100. The washing machine 100 will be described with reference to FIG.

The washing machine 100 includes a water supply port 200, a water supply unit 300, a detergent case 400, and a washing tub 500. The user can supply water to the washing machine 100 from the water supply port 200. The water sequentially passes through the water supply unit 300 and the detergent case 400 and reaches the washing tub 500. The washing tub 500 performs a washing operation for washing clothes. The washing operation may be an operation performed by various known washing machines. The principle of the present embodiment is not limited to a specific cleaning operation performed by the washing tub 500.

The detergent case 400 includes a first chamber 410, a second chamber 420, and a third chamber 430. The user can store the detergent powder in the first chamber 410. The user can store the liquid detergent in the second chamber 420. The user can store a softener and other finishing agents that act on clothing fibers in the third chamber 430. Note that the third chamber 430 is not necessarily required. The principle of this embodiment is not limited at all by the third chamber 430. In the present embodiment, the first storage chamber is exemplified by the first chamber 410. The second storage chamber is exemplified by the second chamber 420. The first detergent is exemplified by a powder detergent contained in the first chamber 410. The second detergent is exemplified by a liquid detergent contained in the second chamber 420.

The water supply unit 300 includes a water supply valve 310 and a flow path structure unit 320. The water supply valve 310 switches the water path between a first path FP toward the first chamber 410 and the second chamber 420 and a second path SP toward the third chamber 430. Note that the second path SP is not necessarily required. The principle of this embodiment is not limited at all by the second route SP.

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

When the water supply valve 310 opens the second path SP, water is supplied to the third chamber 430. The finishing agent in the third chamber 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 garment in an aqueous solution of a finish and impart the desired properties (eg, flexibility) to the garment.

FIG. 2 is a schematic perspective view of the water supply unit 300. With reference to FIG.1 and FIG.2, the water supply unit 300 is demonstrated.

The water supply unit 300 includes the water supply valve 310, the water supply box 330, and the lid 340 described with reference to FIG. The detergent case 400 described with reference to FIG. 1 is accommodated in the water supply box 330. The user can pull out the detergent case 400 from the water supply box 330. The flow path structure 320 described with reference to FIG. 1 is formed integrally with the water supply box 330. The flow path of the flow path structure 320 is disposed below the lid body 340.

FIG. 3A is a schematic perspective view of the water supply box 330. FIG. 3B is a schematic side view of the water supply box 330. The water supply box 330 will be described with reference to FIGS. 1, 3A and 3B.

The water supply box 330 includes a holding box 350 and a flow path box 360. The detergent case 400 described with reference to FIG. 1 is accommodated in the holding box 350. The flow path structure 320 described with reference to FIG. 1 forms a flow path in the flow path box 360.

The water supply box 330 includes a shared wall 331 shared by the holding box 350 and the flow path box 360. The shared wall 331 supports water flowing through the flow path in the flow path box 360. In the present embodiment, the support wall is exemplified by the shared wall 331.

The flow path box 360 includes a first water guide tube 361, a second water guide tube 362, and a peripheral wall portion 363. The first water conduit 361 may be the upstream end of the first path FP described with reference to FIG. The second water conduit 362 may be the upstream end of the second path SP described with reference to FIG. The water supply valve 310 described with reference to FIG. 1 is attached to the first water guide tube 361 and the second water guide tube 362. While the water supply valve 310 opens the first water conduit 361, the second water conduit 362 is closed. While the water supply valve 310 opens the second water conduit 362, the first water conduit 361 is closed.

The lid body 340 faces the shared wall 331. The peripheral wall portion 363 is erected between the lid 340 and the shared wall 331, and defines a substantially rectangular region in which a flow path is formed. The peripheral wall portion 363 includes a right wall 364 from which the first water guide tube 361 and the second water guide tube 362 protrude. The flow path structure 320 described with reference to FIG. 1 includes a shared wall 331, a lid 340, a flow path box 360, a first water conduit 361, and a second water conduit 362.

FIG. 4 is a schematic perspective view of the water supply box 330. The water supply box 330 will be further described with reference to FIGS. 1, 3B and 4. In addition, the detergent case 400 and the cover body 340 are removed from the water supply box 330 shown in FIG.

The holding box 350 includes a substantially U-shaped accommodation wall 351 formed integrally with the shared wall 331. The storage wall 351 defines a storage space 352 in which the detergent case 400 is stored in cooperation with the shared wall 331. In the present embodiment, the holding portion is exemplified by the accommodation wall 351.

The accommodation wall 351 includes a lower wall 353, a left wall 354, and a right wall 355. The lower wall 353 extends below the detergent case 400. The lower wall 353 receives the water leaked from the first chamber 410, the second chamber 420, and the third chamber 430 below the detergent case 400. The left wall 354 is erected between the left edge of the lower wall 353 and the left edge of the shared wall 331. The right wall 355 is erected between the right edge of the lower wall 353 and the right edge of the shared wall 331.

The housing wall 351 includes a left holding shoulder 356 and a right holding shoulder 357. The left holding shoulder 356 is formed along a corner formed by the left wall 354 and the lower wall 353. The right holding shoulder 357 is formed along a corner formed by the right wall 355 and the lower wall 353. The left holding shoulder 356 and the right holding shoulder 357 extend in the insertion direction of the detergent case 400. The detergent case 400 is held in the accommodation space 352 by the left holding shoulder 356 and the right holding shoulder 357.

The receiving wall 351 includes a substantially U-shaped front edge 358. The leading edge 358 cooperates with the shared wall 331 to define the insertion port 391. The detergent case 400 is inserted into the accommodation space 352 from the insertion port 391.

The accommodation wall 351 includes a rear wall 359 opposite to the front edge 358. The rear wall 359 closes the accommodation space 352.

As shown in FIG. 3B, the shared wall 331 is disposed horizontally between the storage wall 351 and the flow path box 360, while the lower wall 353 is inclined downward from the rear wall 359 toward the front edge 358. To do. Therefore, the designer can give a large height dimension to the right wall 364 of the flow path box 360 near the rear wall 359 without excessively increasing the height dimension of the water supply box 330. The right wall 364 narrows from the rear wall 359 toward the front edge 358. Therefore, the lid 340 is disposed substantially horizontally.

The first water guide tube 361 and the second water guide tube 362 protrude outward from the right wall 364 of the flow path box 360 closer to the rear wall 359 than the front edge 358. In the vicinity of the rear wall 359, the right wall 364 has a large area, so that the designer can give a large value to the inner diameter dimensions of the first water guide tube 361 and the second water guide tube 362. Therefore, the first water guide tube 361 and the second water guide tube 362 can have a low flow resistance.

As shown in FIG. 4, the flow path box 360 includes a first partition 371, a second partition 372, and a third partition 373. The first partition 371 is erected from the shared wall 331 within a region surrounded by the peripheral wall portion 363. The second partition 372 is erected from the shared wall 331 between the first partition 371 and the right wall 364 of the peripheral wall 363. The third partition 373 is erected from the shared wall 331 between the second partition 372 and the right wall 364.

The space surrounding the second partition 372 is used as the first flow path 381 in which the water flowing in from the first water guide tube 361 flows. A space surrounded by the third partition wall 373 and the right wall 364 is used as a second flow path 382 in which water flowing in from the second water guide tube 362 flows. The first flow path 381 corresponds to the first path FP described with reference to FIG. The second flow path 382 corresponds to the second path SP described with reference to FIG. The designer may determine the shapes of the first flow path 381 and the second flow path 382 to match the shape of the detergent case 400. The principle of this embodiment is not limited to the specific shapes of the first flow path 381 and the second flow path 382.

In the first flow path 381, flow-down

holes

383 and 384 are formed in the shared wall 331. The flow down hole 384 is formed at a position different from the flow down hole 383. The water that flows in from the first water guide tube 361 flows into the first chamber 410 described with reference to FIG. The water that has flowed in from the first water conduit 361 flows into the second chamber 420 described with reference to FIG. That is, the flow-down

holes

383 and 384 define a flow path of water to the first chamber 410 and the second chamber 420 between the accommodation wall 351 and the flow path box 360.

The upper edges of the peripheral wall 363, the first partition 371, the second partition 372, and the third partition 373 may be welded to the lower surface of the lid 340. If the water supply box 330 and the lid 340 are made of resin, the upper edges of the peripheral wall 363, the first partition 371, the second partition 372, and the third partition 373 are formed on the lid 340 using ultrasonic technology. Easily welded. Note that the principle of this embodiment is not limited to a specific connection structure among the peripheral wall 363, the first partition 371, the second partition 372, the third partition 373, and the lid 340.

The user can supply water from the first water conduit 361 and fill the first flow path 381 with water. If the third partition wall 373 is connected to the lid 340 in a watertight manner, the water in the first flow path 381 does not flow into the second flow path 382 and passes through the flow-down

holes

383 and 384 to the first chamber 410. And supplied to the second chamber 420.

The user can supply water from the second water conduit 362 and fill the second flow path 382 with water. If the third partition 373 is connected to the lid 340 in a watertight manner, the water in the second flow path 382 is supplied to the third chamber 430 without flowing into the first flow path 381. Therefore, the water flow path is appropriately selected by the switching operation of the water supply valve 310.

The flow path box 360 includes a substantially C-shaped weir wall 374. Both ends of the dam wall 374 are connected to the second partition 372. The flow down hole 384 is surrounded by the second partition 372 and the dam wall 374. Unlike the first partition 371, the second partition 372, and the third partition 373, the upper edge of the dam wall 374 is separated from the lid 340. Therefore, if the first flow path 381 is filled with water, the water can flow into the second chamber 420 from the flow down hole 384 through the gap between the dam wall 374 and the lid body 340. In the present embodiment, the wall portion is exemplified by a first partition 371, a second partition 372, a third partition 373, and a dam wall 374. The surrounding wall portion is exemplified by the second partition wall 372 and the dam wall 374.

FIG. 5 is a schematic cross-sectional view of the dam wall 374. The function of the dam wall 374 will be described with reference to FIGS.

When the inflow of water from the first water guide cylinder 361 stops, the water level in the first flow path 381 gradually decreases due to the flow of water from the flow down

holes

383 and 384. When the water level in the first flow path 381 falls below the height of the dam wall 374, the liquid layer in the space surrounded by the dam wall 374 and the second partition 372 is separated from the liquid layer surrounding the dam wall 374. The Therefore, the water in the space surrounded by the dam wall 374 and the second partition 372 disappears faster than the water existing in other regions. Thereafter, air can flow into the first flow path 381 through the flow hole 384. As a result, drainage through the flow hole 383 is also accelerated.

FIG. 6 is a schematic perspective view of the detergent case 400. The detergent case 400 will be described with reference to FIGS. 4 and 6.

The detergent case 400 includes a handle portion 440, a first partition wall 411, a second partition wall 421, and a third partition wall 431. The first partition wall 411, the second partition wall 421, and the third partition wall 431 are connected to the handle portion 440. The user can grip the handle portion 440 and pull out the detergent case 400 from the storage space 352. The first partition wall 411 partitions the first chamber 410 that opens upward. The second partition wall 421 partitions the second chamber 420 that opens upward. The third partition wall 431 partitions the third chamber 430 that opens upward. The user can pull out the detergent case 400 from the accommodation space 352 and supply the detergent to the first chamber 410 partitioned by the first partition wall 411. The user can pull out the detergent case 400 from the storage space 352 and supply the liquid detergent to the second chamber 420 partitioned by the second partition wall 421. The user can pull out the detergent case 400 from the storage space 352 and supply the finishing agent to the third chamber 430 defined by the third partition wall 431. In the present embodiment, the partition wall is exemplified by at least one of the first partition wall 411 and the second partition wall 421.

The detergent case 400 includes an intermediate wall 414 that divides the first chamber 410 into a mixing chamber 412 and a foaming chamber 413. The mixing chamber 412 is formed between the handle portion 440 and the foaming chamber 413. A user can supply the detergent to the mixing chamber 412. The mixing chamber 412 is mainly used for mixing the powder detergent with water. The foaming chamber 413 is mainly used for foaming an aqueous solution of a detergent. In the present embodiment, the partition wall is exemplified by the intermediate wall 414.

FIG. 7 is a schematic plan view of the water supply box 330. With reference to FIG.6 and FIG.7, the water supply technique from the flow path box 360 to the detergent case 400 is demonstrated.

As described above, flow-down

holes

383 and 384 are formed in the shared wall 331. A flow-down hole 385 is further formed in the shared wall 331. Each of the flow-down

holes

383, 384, 385 directs the water supplied to the first flow path 381 to the detergent case 400. The water supplied to the first flow path 381 through the first water conduit 361 is directed to the mixing chamber 412 through the flow hole 383. More specifically, the water supplied to the first flow path 381 through the first water conduit 361 flows down to the mixing chamber 412 through the flow down hole 383. As a result, the powder detergent in the mixing chamber 412 can be efficiently mixed with water. The water supplied to the first flow path 381 through the first water conduit 361 is directed to the second chamber 420 by the flow hole 384. More specifically, the water supplied to the first flow path 381 through the first water conduit 361 flows down to the second chamber 420 through the flow down hole 384. As a result, the liquid detergent in the second chamber 420 can be efficiently mixed with water. In the present embodiment, the first flow hole is exemplified by the flow hole 383. The third flow hole is exemplified by the flow hole 384.

A notch 415 is formed in the intermediate wall 414. The aqueous solution of the detergent in the mixing chamber 412 can flow into the foaming chamber 413 through the notch 415. The water supplied to the first flow path 381 through the first water conduit 361 is directed to the foaming chamber 413 by the flow down hole 385. More specifically, the water supplied to the first flow path 381 through the first water conduit 361 flows down to the foaming chamber 413 through the flow down hole 385. As a result, the aqueous solution of the detergent in the foaming chamber 413 is efficiently foamed. In the present embodiment, the second flow hole is exemplified by the flow hole 385. The first notch is exemplified by the notch 415.

The first partition wall 411 includes an upstream wall 418 and a downstream wall 419. The upstream wall 418 cooperates with the intermediate wall 414 to define the mixing chamber 412. The downstream wall 419 cooperates with the intermediate wall 414 to define the foaming chamber 413. In the present embodiment, the first wall portion is exemplified by the downstream wall 419. In the present embodiment, the second wall portion is exemplified by the upstream wall 418.

The upstream wall 418 includes an upper edge 451 that faces the shared wall 331. The upper edge 451 is close to the lower surface of the shared wall 331. Since the water in the mixing chamber 412 is confined by the upstream wall 418 and the shared wall 331, the water in the mixing chamber 412 can flow from the notch 415 to the bubble chamber 413 in a concentrated manner.

The downstream wall 419 includes an upper edge 452 that faces the shared wall 331. Unlike the upper edge 451 of the upstream wall 418, most of the upper edge 452 of the downstream wall 419 is separated from the shared wall 331 by 5 mm or more. Therefore, the liquid level of the aqueous solution formed in the bubble chamber 413 is also separated from the shared wall 331. That is, an air layer is formed between the shared wall 331 and the liquid level of the aqueous solution formed in the foaming chamber 413. The water ejected from the downflow hole 385 entrains the air in the air layer and flows into the aqueous solution in the foaming chamber 413. Therefore, the aqueous solution in the bubble chamber 413 is efficiently bubbled. In the present embodiment, the first upper edge is exemplified by the upper edge 452 of the downstream wall 419. The second upper edge is exemplified by the upper edge 451 of the upstream wall 418.

The downstream wall 419 can be rephrased as the detergent case rear wall 416 formed opposite to the handle portion 440 in the front-rear direction. A notch 417 is formed in the detergent case rear wall 416. The detergent aqueous solution in the foaming chamber 413 flows out of the detergent case 400 through the notch 417.

FIG. 8 is a schematic exploded perspective view of the detergent case 400. The detergent case 400 will be described with reference to FIGS. 7 and 8.

The detergent case 400 includes a first siphon lid 422 and a second siphon lid 432. The first siphon lid 422 is used for discharging water from the second chamber 420. The second siphon lid 432 is used for discharging water from the third chamber 430.

The first siphon lid 422 includes a lid plate 423 and an outer cylinder 424. An opening 425 is formed in the lid plate 423. The water flowing down from the flow down hole 384 flows into the second chamber 420 through the opening 425. The outer cylinder 424 protrudes downward from the cover plate 423.

The second partition wall 421 that partitions the second chamber 420 adjacent to the mixing chamber 412 and the foaming chamber 413 includes a bottom wall 426 and an inner cylinder 427. The bottom wall 426 faces the lid plate 423 of the first siphon lid 422. The inner cylinder 427 protrudes upward from the bottom wall 426. When the first siphon lid 422 partially closes the second chamber 420, the inner cylinder 427 is inserted into the outer cylinder 424 to form a siphon structure. The liquid in the second chamber 420 flows into the gap between the inner cylinder 427 and the outer cylinder 424 in accordance with the siphon principle. Thereafter, the liquid flows down in the inner cylinder 427 and is discharged from the detergent case 400.

The second siphon lid 432 includes a lid plate 433 and an outer cylinder (not shown). An opening 434 is formed in the lid plate 433. The water supplied from the second water conduit 362 to the second flow path 382 flows into the third chamber 430 through the opening 434. The third partition wall 431 includes a bottom wall 435 and an inner cylinder 436. When the second siphon lid 432 partially closes the third chamber 430, the inner cylinder 436 is inserted into the outer cylinder of the second siphon lid 432 to form a siphon structure. The liquid in the third chamber 430 flows into the gap between the inner cylinder 436 and the outer cylinder according to the siphon principle. Thereafter, the liquid flows down in the inner cylinder 436 and is discharged from the detergent case 400.

The detergent case 400 includes a boundary wall 401 that forms a boundary between the first chamber 410 (the mixing chamber 412 and the foaming chamber 413) and the second chamber 420. A notch 402 is formed in the boundary wall 401. The liquid in the second chamber 420 can flow out from the second chamber 420 to the mixing chamber 412 through the notch 402. In the present embodiment, the second notch is exemplified by the notch 402.

The detergent case 400 includes a rib structure 460 that protrudes within the mixing chamber 412. The rib structure 460 extends in a direction crossing a streamline of water from the notch 402 formed in the boundary wall 401 to the notch 415 formed in the intermediate wall 414. The rib structure 460 prevents the powder detergent from flowing into the foaming chamber 413 before the powder detergent in the mixing chamber 412 is sufficiently dissolved.

The rib structure 460 includes a left rib 461 and a right rib 462. The right rib 462 is disposed away from the left rib 461. As a result, a complicated water flow pattern is formed in the mixing chamber 412. Therefore, the powder detergent in the mixing chamber 412 is effectively dissolved. In the present embodiment, the first rib is exemplified by one of the left rib 461 and the right rib 462. The second rib is exemplified by the other of the left rib 461 and the right rib 462.

FIG. 9A is a schematic cross-sectional view of the water supply box 330. FIG. 9B is a schematic perspective view of the water supply box 330. The drainage technique from the water supply box 330 will be described with reference to FIGS. 9A and 9B.

As shown in FIG. 9A, the lower wall 353 of the holding box 350 is separated from the detergent case 400. Therefore, a lower space 392 is formed between the lower wall 353 and the detergent case 400. Water and detergent discharged from the detergent case 400 flow through the lower space 392.

FIG. 9B shows a virtual plane PP defined by the upper surface of the left holding shoulder 356 and the upper surface of the right holding shoulder 357. The space below the plane PP is the lower space 392 described above. A space above the plane PP is an upper space 393. The detergent case 400 is accommodated in the upper space 393. Therefore, the front edge 358 of the lower wall 353 is separated from the detergent case 400 and forms a flow-down port 394 (an opening formed between the plane PP and the front edge 358 of the lower wall 353).

As described above, the lower wall 353 is inclined downward toward the insertion port 391. Therefore, the water and the detergent sent out to the lower space 392 can flow down from the flow down port 394 formed between the plane PP and the lower wall 353.

FIG. 10 is a schematic perspective view of the washing machine 100. The washing machine 100 will be described with reference to FIGS. 1 and 10.

The washing machine 100 includes a housing 600 and a lid 700. The housing 600 includes a lower housing 610 and an upper housing 620. The lower casing 610 accommodates the washing tub 500 described with reference to FIG. The lower casing 610 is formed with a discharge port 611 for discharging water from the washing tub 500. The lid 700 is attached to the upper housing 620. The lid 700 rotates up and down on the upper housing 620. The upper housing 620 is formed with the water supply port 200 described with reference to FIG. The water supply unit 300 and the detergent case 400 described with reference to FIG. 1 are incorporated in the upper housing 620.

FIG. 11 is a schematic perspective view of the washing machine 100. The washing machine 100 will be further described with reference to FIG.

As shown in FIG. 11, the user can rotate the lid 700 upward. An input port 621 is formed in the upper housing 620. When the user rotates the lid 700 upward, the washing tub 500 is exposed through the insertion port 621. The user can put clothes into the washing tub 500 through the slot 621.

The handle portion 440 of the detergent case 400 faces the insertion port 621. Therefore, the user can access the handle portion 440 of the detergent case 400 exposed from the housing 600 by rotating the lid portion 700 upward.

FIG. 12 is a schematic sectional view of the washing machine 100. The washing machine 100 will be further described with reference to FIGS. 10 to 12.

The washing machine 100 further includes an operation panel 800. The operation panel 800 is disposed between the water supply port 200 and the lid 700. The user can set various operations of the washing tub 500 by operating the operation panel 800.

The water supply box 330 is disposed below the operation panel 800 and the water supply port 200 in the upper housing 620. The water supplied from the water supply port 200 flows downward and flows into the water supply box 330. As described above, the flow-down port 394 is formed between the lower wall 353 of the holding box 350 and the detergent case 400. The handle portion 440 of the detergent case 400 does not close the flow-down port 394, and the flow-down port 394 opens above the washing tub 500, so that the aqueous solution of the detergent is supplied from the water supply box 330 to the washing tub 500 through the flow-down port 394. It will be dripped directly.

<Cover design>
The designer may give the lid a variety of shapes, and give the lid a function of adjusting the flow resistance in the flow path box and a function of preventing the detergent case from being detached. The lid design technique is described below.

FIG. 13 is a schematic perspective view of the lid 340. The lid 340 is described with reference to FIGS. 3B, 4, 7, and 13.

The lid body 340 includes a lid plate 341, an L-shaped protrusion 342, a left engagement plate 343, and a right engagement plate 344. The lid plate 341 closes the first flow path 381 and the second flow path 382. The lower surface of the cover plate 341 may be welded to the upper edges of the peripheral wall portion 363, the first partition 371, the second partition 372, and the third partition 373 by an ultrasonic technique.

The protrusion 342 protrudes downward from the cover plate 341. The protrusion 342 enters the first flow path 381. As described with reference to FIG. 3A, the shared wall 331 is inclined downward toward the rear wall 359, while the cover plate 341 is substantially horizontal. Accordingly, the first partition 371, the second partition 372, and the third partition 373 gradually increase toward the rear wall 359. This means that the fluctuation width of the flow resistance of the first flow path 381 is increased without the protrusion 342. The principle of the present embodiment enables the designer to provide the protrusion 342 on the lid body 340 and make the cross-sectional area of the first flow path 381 substantially uniform over a predetermined section. The shape of the protrusion 342 may be appropriately set according to the flow characteristics in the flow path box 360. Therefore, the principle of this embodiment is not limited to a specific shape of the protrusion 342.

As shown in FIG. 7, the shared wall 331 has a left insertion hole 332 and a right insertion hole 333 formed therein. The left engagement plate 343 is inserted into the left insertion hole 332. The right engagement plate 344 is inserted into the right insertion hole 333.

FIG. 14A is a schematic perspective view of the washing machine 100. FIG. 14B is a schematic cross-sectional view of the washing machine 100 shown in FIG. 14A. The functions of the left engagement plate 343 and the right engagement plate 344 will be described with reference to FIGS. 9A, 11, 14A, and 14B.

9A, when the lid 340 is attached to the water supply box 330, the left engagement plate 343 and the right engagement plate 344 protrude into the accommodation space 352. The detergent case 400 shown in FIG. 11 is disposed at a storage position in which the first chamber 410, the second chamber 420, and the third chamber 430 are stored in the storage space 352. In the detergent case 400 shown in FIG. 14A, the first chamber 410, the second chamber 420, and the third chamber 430 are arranged at an exposed position exposed from the accommodation space 352. The storage wall 351 holds the detergent case 400 so that the detergent case 400 can be displaced between the storage position and the exposed position.

As shown in FIG. 9A, the left engagement plate 343 protrudes into the first chamber 410. The right engagement plate 344 protrudes into the third chamber 430. When the detergent case 400 is disposed at the exposed position, the left engagement plate 343 contacts the first partition wall 411. When the detergent case 400 is disposed at the exposed position, the right engagement plate 344 contacts the third partition wall 431. In the present embodiment, the engagement piece is exemplified by the left engagement plate 343.

<Reduction of internal pressure>
A conventional channel structure (see Patent Documents 1 to 3 above) has a plate member disposed above a detergent case. A small hole is formed in the plate member. Water flows down through the small holes into the detergent case. If the internal pressure of the flow channel structure is high, water is ejected vigorously downward. At this time, if the user accidentally pulls out the detergent case, the water collides with the surfaces of the parts constituting the washing machine and scatters. Hereinafter, a washing machine having a structure capable of suppressing water scattering even when the user pulls out the detergent case by mistake will be described.

Since the internal pressure of the flow path formed by the flow path structure portion in this embodiment is high, water can be ejected vigorously from the downhole. As a result, the detergent is efficiently mixed with water. However, if the user inadvertently pulls out the detergent case, the ejection of water from the downhole results in water scattering. A technique for reducing the internal pressure of the flow path according to the position of the detergent case will be described below.

FIG. 15A is a schematic cross-sectional view of the detergent case 400 disposed in the storage position. FIG. 15B is a schematic cross-sectional view of the detergent case 400 from the storage position toward the exposure position. A technique for reducing the internal pressure of the flow path will be described with reference to FIGS. 6, 7, 15 </ b> A, and 15 </ b> B.

As shown in FIG. 15B, the shared wall 331 includes a protruding wall 334 that protrudes into the accommodation space 352. The protruding wall 334 forms a recess 335 in the first flow path 381. The protruding wall 334 defines a leakage hole 336 that opens in the horizontal direction.

As described above, the shared wall 331 is inclined downward toward the rear wall 359. The protruding wall 334 is disposed closer to the rear wall 359 than the front edge 358. Therefore, the water in the first flow path 381 can efficiently flow into the recess 335.

The detergent case 400 includes a protruding plate 403 that protrudes from the boundary between the first partition wall 411 and the second partition wall 421 toward the rear wall 359. When the detergent case 400 is disposed at the storage position, the protruding plate 403 closes the leakage hole 336. During this time, water is ejected from the flow holes 383, 384, 385 to the detergent case 400. As a result, the detergent in the detergent case 400 can be efficiently dissolved in water. Thereafter, the water overflows from the detergent case 400 and is received by the lower wall 353. Since the pressure of the water overflowing from the detergent case 400 is not higher than the water pressure at the flow down

holes

383, 384, 385, the water overflowing from the detergent case 400 does not collide with the lower wall 353 with an excessively strong force. Therefore, water is not scattered much while the detergent case 400 is disposed at the storage position. In the present embodiment, the receiving plate is exemplified by the lower wall 353.

When the detergent case 400 moves from the storage position toward the exposure position, the protruding plate 403 opens the leakage hole 336. As a result, the water in the first flow path 381 can leak from the leakage hole 336. The leak hole 336 is formed larger than the flow holes 383, 384, 385. Therefore, the water pressure at the leak hole 336 does not become excessively high. In addition, since a large amount of water can leak from the leak hole 336, the internal pressure of the first flow path 381 is quickly reduced.

In addition, the principle of the form regarding the reduction | decrease of the internal pressure mentioned above is not restricted to the washing machine provided with the detergent case which divides the 1st storage chamber 410 into the mixing chamber 412 and the foaming chamber 413. FIG. That is, the present invention can also be applied to a washing machine including a detergent case that performs generation and foaming of a detergent aqueous solution in a common storage chamber.

<Various rib structures>
Designers designing detergent cases may give the rib structure various shapes to prevent premature spilling of the detergent powder. Various rib structures are described below.

FIG. 16A is a schematic plan view of the detergent case 400A. FIG. 16B is a schematic plan view of the detergent case 400B. The

detergent cases

400A and 400B can be used as the detergent case 400 described with reference to FIG.

The detergent case 400A includes a single rib 463 as a rib structure. The rib 463 protrudes in the mixing chamber 412. The rib 463 extends in a direction crossing the streamline of water from the notch 402 formed in the boundary wall 401 to the notch 415 formed in the intermediate wall 414.

The detergent case 400B includes a left rib 461A and a right rib 462A as rib structures. The right rib 462A is disposed upstream of the left rib 461A in the flow of water from the notch 402 formed in the boundary wall 401 toward the notch 415 formed in the intermediate wall 414. The left rib 461A partially faces the right rib 462A in the direction of water flow from the notch 402 to the notch 415. In the present embodiment, the first rib is exemplified by the right rib 462A. The second rib is exemplified by the left rib 461A.

The washing machine 100 according to one aspect of the present invention includes a detergent case 400 in which a first storage chamber 410 in which a detergent is stored is formed, and a flow path structure 320 that forms a flow path on the detergent case 400. . In addition, the flow channel structure 320 is formed with a plurality of flow holes that direct water in the flow channel toward the detergent case 400. Furthermore, the detergent case 400 divides the first storage chamber 410 into a mixing chamber 412 in which an aqueous solution of the detergent is generated by mixing the detergent and water, and a foaming chamber 413 in which the aqueous solution flowing from the mixing chamber 412 is bubbled. A partition wall 414 is included. Further, the plurality of downflow holes include a first downflow hole 383 that directs water to the mixing chamber 412 and a second downflow hole 385 that directs water to the foaming chamber.

According to the above configuration, the detergent is efficiently dissolved by the water supplied from the first flow down hole to the mixing chamber. As a result, an aqueous solution in which the detergent is sufficiently dissolved is generated. The aqueous solution is efficiently bubbled by the water supplied from the second flow hole to the bubble chamber. Therefore, a sufficiently foamed aqueous solution is used for washing clothes.

In the above configuration, the first notch 415 may be formed in the partition wall 414. The water supplied to the mixing chamber 412 may flow to the foaming chamber 413 through the first notch 415.

According to the above configuration, the water supplied to the mixing chamber flows to the foaming chamber through the first notch, so the aqueous solution of the detergent generated in the mixing chamber is supplied to the foaming chamber from the second flow hole. Efficiently foamed with water. Therefore, a sufficiently foamed aqueous solution is used for washing clothes.

In the above configuration, the detergent case 400 may include a first partition wall 411 that partitions the first storage chamber 410. The first partition wall 411 may include a first wall portion 419 that partitions the foaming chamber 413 in cooperation with the partition wall 414. The first wall portion 419 may include a first upper edge 452 that is separated from the flow path structure portion.

According to the above configuration, since the first wall portion includes the first upper edge that is separated from the flow path structure portion, an air layer is formed between the liquid surface of the aqueous solution in the foaming chamber and the flow path structure portion. The Therefore, the water ejected from the second flow down hole entrains the air in the air layer and flows into the foaming chamber. As a result, the aqueous solution of the detergent is efficiently bubbled. Therefore, a sufficiently foamed aqueous solution is used for washing clothes.

In the above configuration, the first upper edge 452 may be separated from the flow path structure 320 by 5 mm or more.

According to the above configuration, since the first upper edge is separated from the flow channel structure by 5 mm or more, the air layer between the liquid surface of the aqueous solution and the flow channel structure is sufficient for efficient foaming of the aqueous solution. It becomes thicker.

In the above configuration, the first partition wall 411 may include a second wall portion 418 that partitions the mixing chamber 412 in cooperation with the partition wall 414. The second wall portion 418 may include a second upper edge 451 that is closer to the flow path structure portion than the first upper edge 452.

According to the above configuration, since the second wall portion includes the second upper edge closer to the flow path structure portion than the first upper edge, the aqueous solution of the detergent generated in the mixing chamber passes through the first notch portion. It can efficiently flow into the bubble chamber.

In the above configuration, the detergent case 400 includes a second partition wall 421 that partitions the second storage chamber 420 adjacent to the mixing chamber 412, and a boundary wall 401 that is disposed at the boundary between the mixing chamber 412 and the second storage chamber 420. , May be included. The plurality of flow down holes may include a third flow down hole 384 that directs water to the second storage chamber 420. A second notch 402 may be formed in the boundary wall 401. The water supplied to the second storage chamber 420 may flow to the mixing chamber 412 through the second notch 402.

According to the above configuration, since the plurality of flow down holes include the third flow down holes that direct water to the second storage chamber adjacent to the mixing chamber, an aqueous solution of the detergent is also generated in the second storage chamber. Since the aqueous solution of the detergent flows to the mixing chamber through the second notch formed in the boundary wall, the aqueous solution of the detergent is efficiently bubbled in the foaming chamber in the same manner as the aqueous solution of the detergent generated in the first storage chamber.

In the above configuration, the detergent case 400 may include a rib structure 460 that protrudes within the mixing chamber 412. The rib structure 460 may be extended in a direction crossing a streamline of water from the second notch 402 to the first notch 415.

According to the above configuration, the rib structure extends in a direction crossing the stream line of water from the second notch to the first notch, so that the detergent in the mixing chamber flows out to the foaming chamber before dissolution. It becomes difficult.

In the above configuration, the rib structure 460 may include the first ribs 461 and the second ribs 462 that are spaced apart from the first ribs 461.

According to the above configuration, since the rib structure includes the first rib and the second rib that is disposed apart from the first rib, a complicated water flow pattern is formed in the mixing chamber. Therefore, the detergent in the mixing chamber is efficiently dissolved.

In the above configuration, the first rib 462A may be disposed upstream of the second rib 461A in the flow of water from the second notch 402 to the first notch 415.

According to the above configuration, the first rib is disposed upstream of the second rib in the flow of water from the second notch portion to the first notch portion, so that the detergent in the mixing chamber is foamed before dissolution. It becomes difficult to flow into the room.

In the above configuration, the first rib 462A may partially face the second rib 461A in the direction of water flow from the second notch 402 to the first notch 415.

According to the above configuration, the first rib partially opposes the second rib in the direction of water flow from the second notch to the first notch, so that the detergent in the mixing chamber is foamed before dissolution. It becomes difficult to flow into the standing room.

In the above configuration, the detergent may include a powdery first detergent and a liquid second detergent. The first detergent may be supplied to the mixing chamber 412. The second detergent may be supplied to the second storage chamber 420.

According to the above configuration, the user can wash clothes using the powdery first detergent and the liquid second detergent.

In the above configuration, the washing machine may further include a housing 600. The detergent case 400 may include a handle portion 440 exposed from the housing 600. The first partition wall 411 may be connected to the handle portion 440. The mixing chamber 412 may be disposed between the foaming chamber 413 and the handle portion 440.

According to the above configuration, since the mixing chamber is disposed between the foaming chamber and the handle portion, the user can easily supply the detergent to the mixing chamber.

The washing machine 100 according to another aspect of the present invention includes a detergent case 400 having a storage chamber in which detergent is stored, a holding unit 351 that forms a storage space in which the detergent case 400 is stored, and water to the detergent case 400. A water supply box 330 having a flow channel structure 320 that defines a flow channel for supply is provided. In addition, the holding unit 351 is configured to displace the detergent case 400 so that the detergent case 400 can be displaced between an exposed position where the storage chamber is exposed from the holding unit 351 and a storage position where the storage chamber is stored in the storage space. Hold. Furthermore, the water supply box 330 includes a support wall 331 that is disposed between the holding unit 351 and the flow channel structure unit 320 and supports water flowing through the flow channel. Further, the support wall 331 includes flow holes 383, 384, and 385 that define a flow path of water to the detergent case 400 disposed at the storage position between the holding part 351 and the flow path structure part 320, and the detergent case. A leak hole 336 is formed for leaking water in the flow path when 400 is placed at the exposed position. Further, when the detergent case 400 is disposed at the storage position, the detergent case 400 closes the leakage hole 336.

According to the above configuration, since the leakage hole is formed in the support wall, the water in the flow path can leak from the leakage hole when the detergent case is placed at the exposed position. Since the leakage of water from the leakage hole reduces the internal pressure of the flow path, the pressure of the water ejected from the flow hole is reduced. Therefore, even if the user accidentally pulls out the detergent case to the exposed position, the water is hardly scattered. When the detergent case is disposed at the storage position, the detergent case closes the leakage hole, so that the internal pressure of the flow path is maintained at a high level while the detergent case is disposed at the storage position. In the meantime, the water spouted from the downhole can vigorously stir the detergent in the detergent case arranged at the storage position.

In the above configuration, the leakage hole 336 may be larger than the flow-down

holes

383, 384, 385.

According to the above configuration, when the storage chamber is disposed at the exposed position, the internal pressure of the flow path is greatly reduced. Therefore, even if the user accidentally pulls out the detergent case and places the storage chamber at the exposed position, the scattering of water hardly occurs.

In the above configuration, the support wall 331 may include a protruding wall 334 that protrudes into the accommodation space. Further, the protruding wall 334 may form a recess 335 in the flow channel structure. Further, the leak hole 336 may be formed in the protruding wall 334.

According to the above configuration, the protruding wall forms a recess in the flow channel structure, so that the water in the flow channel structure flows into the protruding wall. Since the leak hole is formed in the protruding wall, water is efficiently discharged from the leak hole.

In the above configuration, the holding portion 351 may include a front edge 358 that defines an insertion port into which the detergent case 400 is inserted, and a rear wall 359 opposite to the front edge 358. Further, the protruding wall 334 may be formed closer to the rear wall 359 than the front edge 358.

In the above configuration, the protruding wall is formed closer to the rear wall than the front edge, so that water is discharged from the leakage hole at a position away from the insertion port. Therefore, even if the user accidentally pulls out the detergent case and places the storage chamber at the exposed position, the scattering of water hardly occurs.

In the above configuration, the holding unit 351 may include a receiving plate 353 that receives the water overflowing from the detergent case 400 disposed in the storage position below the detergent case 400. Further, the leak hole 336 may be opened in the horizontal direction.

According to the above configuration, since the leakage hole opens in the horizontal direction, the pressure acting on the water overflowing from the leakage hole is directed in a direction different from the direction in which the receiving plate exists. Therefore, the water leaking from the leak hole is hardly scattered.

In the above configuration, the detergent case 400 may include

partition walls

411 and 421 that partition the storage chamber, and a protruding plate 403 that protrudes from the

partition walls

411 and 421. Further, when the detergent case 400 is disposed at the storage position, the protruding plate 403 may close the leakage hole 336.

According to the above configuration, when the detergent case is arranged at the accommodation position, the protruding plate closes the leakage hole, so that the internal pressure of the flow path is kept at a high level while the detergent case is arranged at the accommodation position. It is. During this time, the water spouted from the downhole can vigorously stir the detergent in the storage chamber of the detergent case disposed at the storage position.

In the above configuration, the flow path structure 320 may include a lid 340 that faces the support wall 331. The lid 340 may include an engagement piece 343 that projects into the accommodation space. Further, when the detergent case is disposed at the exposed position, the engagement piece 343 may abut against the

partition walls

411 and 421.

According to the above configuration, when the detergent case is disposed at the exposed position, the engaging piece comes into contact with the partition wall, so that the detergent case is not easily detached from the holding portion.

The principle of this embodiment is suitably used for various devices having a washing function.

DESCRIPTION OF SYMBOLS 100 Washing machine 320 Flow path structure part 330 Water supply box 331 Shared wall 334 Projection wall 335 Recessed part 336 Leakage hole 340 Cover body 343 Left engagement plate 351 Accommodation wall 352 Accommodation space 353 Lower wall 358 Front edge 359 Rear wall 381

First flow path

383 , 384, 385 Flowing hole 391

Insertion port

400, 400A, 400B Detergent case 401 Boundary wall 402 Notch 403 Projection plate 410 First chamber 411 First partition wall 412 Mixing chamber 413 Foaming chamber 414 Intermediate wall 415 Notch 417 Notch 418 upstream wall 419 downstream wall 420 second chamber 421 second partition wall 440

handle

451, 452 upper edge 460

rib structure

461, 461A left

rib

462, 462A right rib 600 housing

Claims

A detergent case in which a first storage chamber in which detergent is stored is formed;
A flow path structure that forms a flow path on the detergent case, and
In the flow channel structure portion, a plurality of downflow holes are formed to direct water in the flow channel toward the detergent case,
The detergent case partitions the first storage chamber into a mixing chamber in which an aqueous solution of the detergent is generated by mixing the detergent and the water, and a foaming chamber in which the aqueous solution flowing from the mixing chamber is bubbled. Including partition walls,
The plurality of flow holes include a first flow hole that directs the water to the mixing chamber and a second flow hole that directs the water to the foaming chamber.
A first notch is formed in the partition wall,
The washing machine according to claim 1, wherein the water supplied to the mixing chamber flows to the foaming chamber through the first notch.
The detergent case includes a first partition wall that partitions the first storage chamber,
The first partition wall includes a first wall portion that partitions the foaming chamber in cooperation with the partition wall;
The washing machine according to claim 2, wherein the first wall portion includes a first upper edge spaced from the flow path structure portion.
The washing machine according to claim 3, wherein the first upper edge is separated from the flow path structure part by 5 mm or more.
The first partition wall includes a second wall portion that partitions the mixing chamber in cooperation with the partition wall;
The washing machine according to claim 3, wherein the second wall portion includes a second upper edge that is closer to the flow path structure portion than the first upper edge.
The detergent case includes a second partition wall that partitions a second storage chamber adjacent to the mixing chamber, and a boundary wall disposed at a boundary between the mixing chamber and the second storage chamber,
The plurality of flow holes include a third flow hole that directs the water to the second storage chamber,
A second notch is formed in the boundary wall,
The washing machine according to any one of claims 3 to 5, wherein the water supplied to the second storage chamber flows into the mixing chamber through the second cutout portion.
The detergent case includes a rib structure projecting in the mixing chamber,
The washing machine according to claim 6, wherein the rib structure is extended in a direction crossing the streamline of water from the second cutout portion toward the first cutout portion.
The washing machine according to claim 7, wherein the rib structure includes a first rib and a second rib that is spaced apart from the first rib.
The washing machine according to claim 8, wherein the first rib is disposed upstream of the second rib in the water flow from the second notch to the first notch.
The washing machine according to claim 9, wherein the first rib partially faces the second rib in a direction of the water flow from the second notch to the first notch. .
The detergent includes a powdery first detergent and a liquid second detergent,
The first detergent is supplied to the mixing chamber;
The washing machine according to claim 6, wherein the second detergent is supplied to the second storage chamber.
A housing,
The detergent case includes a handle exposed from the housing,
The first partition wall is connected to the handle;
The washing machine according to claim 3, wherein the mixing chamber is disposed between the foaming chamber and the handle portion.
A detergent case having a storage chamber in which the detergent is stored;
A water supply box having a holding part that forms a storage space in which the detergent case is stored, and a flow path structure part that defines a flow path for supplying water to the detergent case,
The holding part is arranged so that the detergent case is displaceable between an exposed position where the storage chamber is exposed from the holding part and a storage position where the storage chamber is stored in the storage space. Hold
The water supply box includes a support wall that is disposed between the holding unit and the flow channel structure unit and supports the water flowing through the flow channel,
The support wall has a flow hole and a storage chamber that define a flow path of the water to the detergent case disposed at the storage position between the holding unit and the flow path structure unit. A leakage hole is formed for leaking the water in the flow path when placed in
When the detergent case is disposed at the storage position, the detergent case closes the leakage hole.
The washing machine according to claim 13, wherein the leakage hole is larger than the flow-down hole.
The support wall includes a projecting wall projecting into the accommodation space,
The protruding wall forms a recess in the flow channel structure,
The washing machine according to claim 13, wherein the leakage hole is formed in the protruding wall.
The holding portion includes a front edge that defines an insertion port into which the detergent case is inserted, and a rear wall opposite to the front edge,
The washing machine according to claim 15, wherein the protruding wall is formed closer to the rear wall than the front edge.
The holding portion includes a receiving plate that receives the water overflowing from the detergent case disposed at the accommodation position below the detergent case,
The washing machine according to claim 15, wherein the leakage hole opens in a horizontal direction.
The detergent case includes a partition wall that partitions the storage chamber, and a protruding plate that protrudes from the partition wall,
The washing machine according to claim 17, wherein the protruding plate closes the leakage hole when the detergent case is disposed at the storage position.
The flow channel structure includes a lid that faces the support wall,
The lid includes an engagement piece protruding into the accommodation space,
The washing machine according to claim 18, wherein the engaging piece abuts on the partition wall when the detergent case is disposed at the exposed position.