CN215976492U - Water containing barrel and washing machine - Google Patents

Abstract

The application provides a water containing barrel and a washing machine, comprising a barrel side wall; a tub bottom wall; the side wall of the barrel is connected to the bottom wall of the barrel, and the side wall of the barrel and the bottom wall of the barrel form a water containing cavity; a water level sensor having an air inlet; the water level box is provided with an air chamber and is arranged on one side of the side wall of the barrel, which is far away from the water containing cavity; a water inlet hole for communicating the air chamber with the water containing cavity is formed in the side wall of the barrel; an air outlet hole is formed in the water level box, and an air inlet portion of the water level sensor is inserted into the air outlet hole. Can install the level sensor who has the air inlet portion on the water-holding bucket, directly insert the air inlet portion of level sensor and establish in the air outlet, need not add the connecting pipe again with intercommunication air chamber and level sensor, assembly process has been reduced, the save time cost, and because so directly insert the air inlet portion with level sensor and establish in the air outlet, even also can keep better leakproofness under the condition of long-term use, and then avoid washing machine to appear monitoring the inaccurate problem of water level in the use.

Description

Water containing barrel and washing machine

Technical Field

The application relates to the technical field of washing equipment, in particular to a water containing barrel and a washing machine.

Background

A washing machine is widely used in homes as a convenient laundry device.

Current washing machine includes the steel ladle, the shell and sets up the disk seat on the shell, and the steel ladle sets up in the shell, and wherein, in washing machine working process, in order to control the water supply and drainage process in the steel ladle, need install water level monitoring device additional, currently set up level sensor on the disk seat usually, set up the air cock on the steel ladle, insert the one end of connecting pipe with the air cock to it is sealed fixed to glue and jump ring, and the other end of connecting pipe is connected to level sensor. The water level sensor monitors the change of the air pressure so as to monitor the change of the water level.

In this structure, need carry out the pressure guide through the pressure guide pipe, and the pressure guide pipe takes place the bulging because of the air cock inserts, and in the washing machine use, the pressure guide pipe can take place plastic deformation and lead to the leakproofness to weaken, the phenomenon of gas leakage appears, leads to washing machine monitoring water level inaccurate, the endless condition of intaking appears.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a water bucket and a washing machine to solve the problem that the existing washing machine is inaccurate in monitoring water level in the using process.

In a first aspect, embodiments of the present application provide a tub, including:

a tub side wall;

a tub bottom wall; the side wall of the barrel is connected to the bottom wall of the barrel, and the side wall of the barrel and the bottom wall of the barrel form a water containing cavity;

a water level sensor having an air inlet; and

the water level box is provided with an air chamber and is arranged on one side, away from the water containing cavity, of the side wall of the barrel; a water inlet hole for communicating the air chamber with the water containing cavity is formed in the side wall of the barrel; and an air outlet hole is formed in the water level box, and an air inlet part of the water level sensor is inserted into the air outlet hole.

Optionally, the air chamber comprises a first air chamber and a second air chamber, and the first air chamber and the second air chamber are communicated through a communication hole;

the water inlet hole is positioned in the first air chamber and communicates the first air chamber with the water containing cavity, and the communication hole is arranged on one side of the water inlet hole, which is far away from the bottom wall of the barrel;

the air outlet is positioned in the second air chamber.

Alternatively, the water level box may include a box side wall, a box top wall, a box bottom wall, and a partition wall, the box side wall being connected between the box top wall and the box bottom wall, the box side wall, the box top wall, and the box bottom wall forming the air chamber, the partition wall being provided in the air chamber to partition the air chamber into the first air chamber and the second air chamber, the communication hole being provided in the partition wall.

Optionally, the first and second air chambers are distributed along a circumferential direction of the tub.

Optionally, one side of the barrel bottom wall, which deviates from the water containing cavity, is provided with an installation position, and the water level sensor is arranged on the installation position.

Optionally, one side of the side wall of the bucket, which is far away from the water containing cavity, is provided with an installation position, and the water level sensor is arranged on the installation position.

Optionally, a mounting position is arranged on a box wall of the water level box, and the water level sensor is arranged on the mounting position.

Optionally, the tub further comprises a sealing member, and the air inlet portion is hermetically connected with the air outlet hole through the sealing member.

Optionally, the sealing element includes a first sealing portion, a second sealing portion and a connecting sealing portion, the first sealing portion is connected to one end of the connecting sealing portion, the second sealing portion is connected to the other end of the connecting sealing portion, an insertion hole penetrating through the first sealing portion, the second sealing portion and the connecting sealing portion is formed in the sealing element, the connecting sealing portion is arranged in the air outlet hole, the first sealing portion is located on the outer side of the water level box and attached to the outer wall surface of the water level box, the second sealing portion is located on the inner side of the water level box and attached to the inner wall surface of the water level box, and the air inlet portion is inserted in the insertion hole in a sealing mode.

In a second aspect, embodiments of the present application also provide a laundry machine including the tub as described above.

The embodiment of the application provides a water-containing bucket and washing machine, through set up the water level box that has the air chamber on the bucket lateral wall, set up the venthole on the water level box, thereby can directly insert water level sensor's air inlet portion and establish in the venthole, need not add the lead pipe again with intercommunication air chamber and water level sensor, water level sensor can directly communicate with the air chamber through self air inlet portion, assembly process has been reduced, the time saving cost, and because then directly insert water level sensor's air inlet portion and establish in the venthole, under the condition of long-term use, the lead pipe can not appear and take place plastic deformation and lead to the problem that the leakproofness weakens, even also can keep better leakproofness under the condition of long-term use, and then avoid washing machine to appear the inaccurate problem of monitoring water level in the use.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, wherein like reference numerals represent like parts in the following description.

Fig. 1 is a schematic structural diagram of a washing machine according to an embodiment of the present application.

Fig. 2 is a schematic structural view of a tub provided in an embodiment of the present application.

Fig. 3 is a schematic structural view of another view angle of the tub provided in the embodiments of the present application.

Fig. 4 is a schematic structural view of a tub and a water level sensor provided in an embodiment of the present application.

Fig. 5 is an enlarged view at B in fig. 4.

Fig. 6 is a schematic structural view of the water level sensor of fig. 5 with a sealing member mounted thereon.

Fig. 7 is a schematic structural view of a water level sensor according to an embodiment of the present invention installed at the bottom of a water level box.

Fig. 8 is a schematic structural view of the water level sensor of fig. 7.

Fig. 9 is an enlarged view of a portion a in fig. 2.

Reference numerals:

1. a washing machine; 10. a washing machine housing;

20. a water containing barrel; 21. a water containing cavity; 22. an installation position; 23. a tub side wall; 231. a water inlet hole; 24. a tub bottom wall;

25. a water level box; 251. an air chamber; 2511. a first air chamber; 2512. a second air chamber; 252. an air outlet; 253. a communicating hole;

254. a box side wall; 2541. a first side wall; 2542. a second side wall; 2543. a third side wall; 2544. a fourth side wall; 255. a box top wall; 256. a box bottom wall; 257. a partition wall;

30. an inner barrel; 40. a boom; 50. a drive motor;

60. a water level sensor; 61. an air intake portion; 62. a sensor body; 70. a seal member; 71. a first seal portion; 72. a second seal portion; 73. the sealing part is connected.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present application.

Reference herein to "an embodiment" or "an implementation" means that a particular feature, component, or characteristic described in connection with the embodiment or implementation can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The embodiment of the application provides a water bucket and a washing machine to solve the problem that the existing washing machine is inaccurate in monitoring water level in the using process. This will be explained below with reference to the drawings.

The water tub provided by the embodiment of the application can be applied to a washing machine, for example, a pulsator washing machine. For example, please refer to fig. 1, and fig. 1 is a schematic structural diagram of a washing machine according to an embodiment of the present application. The washing machine 1 includes a washing machine housing 10, a tub 20, an inner tub 30, a hanger bar 40, a pulsator (not shown) rotatably provided in the inner tub 30, the tub 20 provided in the washing machine housing 10 through the hanger bar 40, and a driving motor 50. Taking the normal installation of the tub 20 as an example, the upper end of the hanger bar 40 is connected to the washing machine housing 10, the lower end of the hanger bar 40 is connected to the tub 20, and the tub 20 is suspended in the washing machine housing 10 by the hanger bar 40. The space between the bottom of the tub 20 and the washing machine housing 10 may be used for installing the driving motor 50, and it can be understood that the driving motor 50 is used for driving the pulsator to rotate so as to drive the laundry to be continuously turned up and down, left and right, thereby achieving the purpose of washing the laundry.

In order to stably lift the water containing barrel 20, the four corners of the washing machine shell 10 are respectively provided with the hanging rods 40, the water containing barrel 20 is lifted by the four hanging rods 40, after water is injected, the total mass of the water containing barrel 20, clothes and water is large, the water containing barrel 20 can move up and down in the working process of the washing machine 1, and at the moment, the hanging rods 40 can buffer part of kinetic energy, play a role in buffering, and improve the stability of the washing machine 1 in the working process.

It should be noted that, among the related art, washing machine includes the ladle, the shell and sets up the plate seat on the shell, and the ladle sets up in the shell, and in washing machine working process, in order to control the water supply and drainage process in the ladle, need install water level monitoring device additional, set up level sensor on the plate seat usually now, set up the air cock on the ladle, insert the one end of pressure pipe with the air cock to it is sealed fixed with glue and jump ring, and the other end of pressure pipe is connected to level sensor. The water level sensor monitors the change of the air pressure so as to monitor the change of the water level. In this structure, need carry out the pressure guide through the pressure guide pipe, and the pressure guide pipe takes place the bulging because of the air cock inserts, and in the washing machine use, the pressure guide pipe can take place plastic deformation and lead to the leakproofness to weaken, the phenomenon of gas leakage appears, leads to washing machine monitoring water level inaccurate, the endless condition of intaking appears.

Based on this, please refer to fig. 2 to 5, fig. 2 is a schematic structural diagram of a tub provided in an embodiment of the present application, wherein one side wall of the water level box in fig. 2 is omitted to enable the internal structure of the water level box to be seen clearly, fig. 3 is a schematic structural diagram of another view angle of the tub provided in the embodiment of the present application, fig. 4 is a schematic structural diagram of the tub and a water level sensor provided in the embodiment of the present application, and fig. 5 is an enlarged view of B in fig. 4. The washing machine 1 provided in the embodiment of the present application, the installation site 22 is disposed on the tub 20 having the water containing cavity 21, wherein the installation site 22 is used for installing the water level sensor 60 having the air inlet 61, the tub 20 includes a tub side wall 23, a tub bottom wall 24 and a water level box 25, the tub side wall 23 is connected to the tub bottom wall 24, the tub side wall 23 and the tub bottom wall 24 form the water containing cavity 21, and the installation site 22 disposed on the tub 20 can be understood as: the mounting location 22 may be arranged on a side of the tub side wall 23 facing away from the water containing chamber 21, or the mounting location 22 may be arranged on a side of the tub bottom wall 24 facing away from the water containing chamber 21, or the mounting location 22 may be arranged on a box wall of the water level box 25. Wherein, the water level box 25 is provided with an air chamber 251, and the water level box 25 is arranged at one side of the barrel side wall 23 which is far away from the water containing cavity 21; the side wall 23 of the barrel is provided with a water inlet 231 for communicating the air chamber 251 with the water containing cavity 21; the water level box 25 is provided with an air outlet hole 252, and the air inlet portion 61 of the water level sensor 60 is inserted into the air outlet hole 252, wherein the air outlet hole 252 is configured to: the water flowing into the air chamber 251 does not enter the air outlet hole 252. The water level sensor 60 having the air inlet portion 61 may be mounted on the tub 20 by providing the mounting location 22 on the tub 20, the water level box 25 having the air chamber 251 is provided on the tub side wall 23, and the air outlet hole 252 is provided on the water level box 25, so that the air inlet portion 61 of the water level sensor 60 may be directly inserted into the air outlet hole 252, when water is filled in the water containing chamber 21, water may enter the air chamber 251 through the water inlet hole 231, so that the gas in the air chamber 251 is compressed, so that the gas in the air chamber 251 can flow to the air inlet portion 61, the water level sensor 60 may monitor the pressure of the gas, the more water is filled in the water containing chamber 21, the greater the pressure monitored by the water level sensor 60, and the water level sensor 60 may indirectly monitor the level of the water in the water containing chamber 21 through the change of the pressure. The water level sensor 60 can be directly communicated with the air chamber 251 through the air inlet part 61 of the water level sensor 60, a pressure guide pipe is not required to be additionally arranged to communicate the air chamber 251 with the water level sensor 60, the assembling procedures are reduced, the time cost is saved, and the air inlet part 61 of the water level sensor 60 is directly inserted into the air outlet hole 252, so that the problem that the sealing performance is weakened due to plastic deformation of the pressure guide pipe cannot occur under the condition of long-term use, the better sealing performance can be kept even under the condition of long-term use, the problem that the monitoring water level is inaccurate in the use process of the washing machine 1 is avoided, and the problem that the pressure guide pipe falls off is not required to be worried.

It can be understood that the air inlet 61 is provided for the water level sensor 60 itself, and the water level sensor 60 can adopt the existing water level sensor 60, and the water level can be monitored by sensing the change of the air pressure, so the specific structure and the working principle thereof are not described herein again.

It can be understood that, the air outlet 252 of the water level box 25 is used for inserting the air inlet 61 of the water level sensor 60, and the water level sensor 60 is used for monitoring the change of the air pressure, and when the air outlet 252 is provided, the position of the air outlet 252 needs to be considered, so as to prevent the water in the air chamber 251 from flowing into the water inlet 231. Reference is made in a state when the tub is normally mounted, such as that the air outlet hole 252 is provided above the water inlet hole 231, or the air chamber 251 is partitioned into different air chambers in which the air outlet hole 252 and the water inlet hole 231 are provided, wherein the air chambers are configured to: when water enters the air chamber with the water inlet 231, the water cannot flow to the air chamber with the air outlet 252.

Illustratively, continuing to refer to fig. 2, the gas chamber 251 includes a first gas chamber 2511 and a second gas chamber 2512, the first gas chamber 2511 and the second gas chamber 2512 are communicated through the communication hole 253; wherein the water inlet hole 231 is located in the first air chamber 2511, the water inlet hole 231 communicates the first air chamber 2511 with the water containing chamber 21, the air outlet hole 252 is located in the second air chamber 2512, such as the air outlet hole 252 is located on a side wall forming the second air chamber 2512, the communication hole 253 is provided on a side of the water inlet hole 231 remote from the tub bottom wall 24, that is, the communication hole 253 is located above the water inlet hole 231 in a vertical direction when the tub 20 is normally installed, and when water enters the first air chamber 2511 from the water inlet hole 231, since the communication hole 253 is located above the water inlet hole 231, water does not enter the second air chamber 2512 from the communication hole 253. At this time, since the air outlet 252 is disposed at the second air chamber 2512, the air outlet 252 is located above or below the water inlet 231 or the air outlet 252 is flush with the water inlet 231 in the vertical direction, and water does not flow into the air outlet 252. When water in the water containing cavity 21 enters the first air chamber 2511, air in the first air chamber 2511 and the second air chamber 2512 is compressed, so that the air in the second air chamber 2512 can flow to the air inlet part 61 of the water level sensor 60, the more water is injected into the water containing cavity 21, the higher the pressure monitored by the water level sensor 60 is, and the water level sensor 60 can indirectly monitor the water level in the water containing cavity 21 through the change of the pressure.

Wherein the tub 20 includes a tub bottom wall 24 and a tub side wall 23, the tub side wall 23 is connected to the tub bottom wall 24, the tub side wall 23 and the tub bottom wall 24 form a water containing chamber 21, the first air chamber 2511 and the second air chamber 2512 are distributed along a circumferential direction of the tub 20, such as the first air chamber 2511 and the second air chamber 2512 are disposed side by side, at this time, as shown in fig. 3 and 4, the mounting location 22 may be disposed at a side of the tub bottom wall 24 facing away from the water containing chamber 21, i.e., the water level sensor 60 is disposed at a side of the tub bottom wall 24 facing away from the water containing chamber 21, wherein, as shown in fig. 5 and 6, fig. 6 is a schematic structural view when the water level sensor in fig. 5 is mounted with a seal. The water level sensor 60 includes a sensor body 62 and an air inlet portion 61 provided on the sensor body 62, the air inlet portion 61 being provided along a radial direction of the tub 20, one end of the air inlet portion 61 being inserted in the air outlet hole 252, so that the sensor body 62 can detect a change in air pressure in the second air chamber 2512. Wherein the water level sensor 60 is detachably mounted on the mounting position 22 of the bottom wall 24 of the barrel for facilitating replacement of the water level sensor 60, such as a snap-fit connection can be provided on the bottom wall 24 of the barrel for mounting the water level sensor 60 on the mounting position 22 of the bottom wall 24 of the barrel.

Of course, as shown in fig. 7 and 8, fig. 7 is a schematic structural view of the water level sensor provided in the embodiment of the present application when the water level sensor is installed at the bottom of the water level box. Fig. 8 is a schematic structural view of the water level sensor of fig. 7. The water level sensor 60 may also be disposed on the water level box 25, such as disposing the water level sensor 60 at the bottom of the water level box 25, and specifically, a mounting location may be disposed on a box bottom wall of the water level box 25, the mounting location being located below the second air chamber, an air outlet hole being located on the box bottom wall of the water level box 25, the air inlet portion 61 of the water level sensor 60 being disposed along the axial direction of the tub 20, the water level sensor 60 being detachably mounted on the box bottom wall of the water level box 25, and one end of the air inlet portion 61 being inserted in the air outlet hole, thereby enabling the water level sensor 60 to detect a change in air pressure in the second air chamber.

Here, it is understood that the descriptions of the upper, lower, etc. in relation to the orientation are made with reference to the state when the tub 20 is normally mounted.

For example, referring to fig. 9 in conjunction with fig. 2 and 3, fig. 9 is an enlarged view of a point a in fig. 2. The water level cartridge 25 may include a cartridge side wall 254, a cartridge top wall 255, a cartridge bottom wall 256, and a partition wall 257, the cartridge side wall 254 being connected between the cartridge top wall 255 and the cartridge bottom wall 256, the cartridge side wall 254, the cartridge top wall 255, and the cartridge bottom wall 256 forming the gas chamber 251, the partition wall 257 being provided within the gas chamber 251 to partition the gas chamber 251 into the first gas chamber 2511 and the second gas chamber 2512, the communication hole 253 being provided on the partition wall 257. Wherein the cartridge sidewall 254 includes a first sidewall 2541, a second sidewall 2542, a third sidewall 2543 and a fourth sidewall 2544, the first sidewall 2541 is provided on the tub sidewall 23 of the tub 20, according to circumstances, the tub sidewall 23 of the tub 20 may serve as the first sidewall 2541, the second sidewall 2542 is disposed opposite to the first sidewall 2541, the third sidewall 2543 and the fourth sidewall 2544 are disposed opposite to each other, the third sidewall 2543 is connected between the first sidewall 2541 and the second sidewall 2542, the fourth sidewall 2544 is connected between the first sidewall 2541 and the second sidewall 2542, and the partition wall 257 is located between the third sidewall 2543 and the fourth sidewall 2544 and connected with the first sidewall 2541 and the second sidewall 2542.

Wherein, in order to ensure the air tightness of the water level box 25, the water level box 25 may be integrally formed with the tub 20.

For example, referring to fig. 2, 5 and 6, in order to improve the air tightness between the air inlet portion 61 and the air outlet hole 252 of the water level sensor 60, the air inlet portion 61 may be hermetically connected to the air outlet hole 252 through a sealing member 70. The sealing member 70 may include a first sealing portion 71, a second sealing portion 72 and a connecting sealing portion 73, the first sealing portion 71 is connected to one end of the connecting sealing portion 73, the second sealing portion 72 is connected to the other end of the connecting sealing portion 73, an insertion hole penetrating the first sealing portion 71, the second sealing portion 72 and the connecting sealing portion 73 is formed in the sealing member 70, the connecting sealing portion 73 is disposed in the air outlet hole 252, the first sealing portion 71 is located outside the water level box 25 and attached to an outer wall surface of the water level box 25, the second sealing portion 72 is located inside the water level box 25 and attached to an inner wall surface of the water level box 25, and the air inlet portion 61 is inserted into the insertion hole in a sealing manner.

It should be noted that the terms "first", "second", and the like in the description and claims of the present application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order, and are not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The tub and the washing machine provided by the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are explained herein by applying specific examples, and the description of the above embodiments is only used to help understand the method and the core ideas of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. A tub, characterized by comprising:

a tub side wall;

a tub bottom wall; the side wall of the barrel is connected to the bottom wall of the barrel, and the side wall of the barrel and the bottom wall of the barrel form a water containing cavity;

a water level sensor having an air inlet; and

the water level box is provided with an air chamber and is arranged on one side, away from the water containing cavity, of the side wall of the barrel; a water inlet hole for communicating the air chamber with the water containing cavity is formed in the side wall of the barrel; and an air outlet hole is formed in the water level box, and an air inlet part of the water level sensor is inserted into the air outlet hole.

2. The tub according to claim 1, wherein the air room includes a first air room and a second air room, the first air room and the second air room communicating through a communication hole;

the water inlet hole is positioned in the first air chamber and communicates the first air chamber with the water containing cavity, and the communication hole is arranged on one side of the water inlet hole, which is far away from the bottom wall of the barrel;

the air outlet is positioned in the second air chamber.

3. The tub according to claim 2, wherein the water level box includes a box side wall, a box top wall, a box bottom wall, and a partition wall, the box side wall being connected between the box top wall and the box bottom wall, the box side wall, the box top wall, and the box bottom wall forming the air chamber, the partition wall being provided within the air chamber to partition the air chamber into the first air chamber and the second air chamber, the communication hole being provided on the partition wall.

4. The tub according to claim 2 or 3, wherein the first and second air rooms are distributed in a circumferential direction of the tub.

5. The tub of claim 4, wherein a side of the tub bottom wall facing away from the water containing chamber is provided with a mounting location on which the water level sensor is provided.

6. The tub of claim 1, wherein a side of the tub side wall facing away from the water containing chamber is provided with a mounting location on which the water level sensor is provided.

7. The tub according to claim 1, wherein a mounting location is provided on a tub wall of the water level box, and the water level sensor is provided on the mounting location.

8. The tub of claim 1, further comprising a sealing member, through which the air inlet portion is sealingly connected with the air outlet hole.

9. The water bucket according to claim 8, wherein the sealing member comprises a first sealing portion, a second sealing portion and a connecting sealing portion, the first sealing portion is connected to one end of the connecting sealing portion, the second sealing portion is connected to the other end of the connecting sealing portion, a plug hole penetrating through the first sealing portion, the second sealing portion and the connecting sealing portion is formed in the sealing member, the connecting sealing portion is arranged in the air outlet hole, the first sealing portion is located on the outer side of the water level box and attached to the outer wall surface of the water level box, the second sealing portion is located on the inner side of the water level box and attached to the inner wall surface of the water level box, and the air inlet portion is sealed and inserted in the plug hole.

10. A laundry machine characterized by comprising the tub as claimed in any one of claims 1 to 9.

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