CN219908243U - Washing machine - Google Patents

Abstract

The utility model provides a washing machine, which comprises a containing cavity, an inner barrel detachably arranged in the containing cavity, and further comprises: one end of the first overflow pipe is communicated with the accommodating cavity, and the other end of the first overflow pipe is connected with a water receiving disc; and one end of the second overflow pipe is communicated with the inner barrel, the other end of the second overflow pipe is inserted into the first overflow pipe, and a one-way valve is arranged on the second overflow pipe. According to the utility model, the second overflow pipe is inserted into the first overflow pipe, and the one-way valve is arranged on the second overflow pipe, so that the washing machine not only has an overflow function, but also can realize normal disassembly and assembly of the inner barrel, meanwhile, when the washing machine performs negative pressure dehydration, the second overflow pipe can axially slide relative to the first overflow pipe, so that allowance is provided for elastic deformation of the inner barrel, and the first overflow pipe is utilized to support and guide the second overflow pipe, so that the second overflow pipe can be prevented from generating bending dead angles in the process of installing and operating the washing machine, thereby improving the working stability of the washing machine and improving the use experience of users.

Description

Washing machine

Technical Field

The utility model belongs to the technical field of clothes treatment equipment, and particularly relates to a washing machine.

Background

The washing machine is a common household appliance for washing clothes, a washing barrel module of the washing machine is arranged in the machine body, and the washing of the clothes is realized through the rotation of the washing barrel module, so that a lot of convenience is provided for the daily life of people. The washing barrel module of the washing machine generally comprises an inner barrel and an outer barrel, wherein the bottom of the inner barrel is provided with a pulsator, and clothes and water in the inner barrel are stirred through rotation of the pulsator during washing, so that the aim of washing is fulfilled.

In the prior art, in order to avoid cross infection when the washing machine washes different types of clothes of different users, some washing machines with replaceable inner barrels gradually appear. In order to reduce vibration and noise generated when the washing machine is dehydrated, a washing apparatus capable of performing negative pressure dehydration is proposed. However, for the washing machine with the replaceable inner barrel and the washing machine capable of negative pressure dehydration, the water inflow of the washing machine is generally controlled through the flowmeter, the overflow structure is not arranged on the washing machine, and when the washing machines of the machine types are in water inflow, if the flowmeter is invalid or the detection result is distorted, the problem of excessive water inflow easily occurs, so that the water inflow overflows into the home of a user, and the use experience of the user is seriously affected.

Therefore, designing a washing machine capable of preventing excessive inflow water from overflowing into the home of the user is a technical problem to be solved by those skilled in the art.

The present utility model has been made in view of this.

Disclosure of Invention

The utility model provides a washing machine, which is characterized in that a first overflow pipe is arranged on a containing cavity, a second overflow pipe spliced with the first overflow pipe is arranged on an inner barrel, so that the inner barrel is convenient to assemble and disassemble, and a one-way valve is arranged on the second overflow pipe, so that the washing machine can carry out negative pressure dehydration on the premise of not influencing the assembly and disassembly of the inner barrel, and the overflow problem of a replaceable inner barrel and/or negative pressure dehydration machine type is solved.

In order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that:

a washing machine including a receiving chamber, and an inner tub detachably installed in the receiving chamber, further comprising:

one end of the first overflow pipe is communicated with the accommodating cavity, and the other end of the first overflow pipe is connected with a water receiving disc;

and one end of the second overflow pipe is communicated with the inner barrel, the other end of the second overflow pipe is inserted into the first overflow pipe, and a one-way valve is arranged on the second overflow pipe.

Further, the first overflow pipe is connected with the accommodating cavity from the outer side of the accommodating cavity, the second overflow pipe is connected with the inner barrel from the outer side of the inner barrel wall, and the outer diameter of the second overflow pipe is smaller than or equal to the inner diameter of the first overflow pipe.

Preferably, the peripheral wall of the second overflow pipe close to the inner barrel end is in interference fit with the port of the first overflow pipe close to the inner barrel end;

preferably, the outer diameter of the second overflow pipe near the end of the inner tub is gradually reduced in a direction from the inner tub to the outer diameter of the second overflow pipe far from the inner tub.

Further, the length of the second overflow pipe is greater than or equal to that of the first overflow pipe, and the end part of the second overflow pipe at least partially extends into the water receiving cavity of the water receiving disc.

Further, a first suction piece is arranged on the first overflow pipe and/or the water receiving disc, a second suction piece is arranged at the end part of the second overflow pipe, and when the inner barrel is installed in place, the first suction piece and the second suction piece are sucked;

preferably, the first suction piece is arranged at the joint of the first overflow pipe and the water receiving disc; the second suction piece is arranged at the side part of one end of the second overflow pipe far away from the inner barrel.

Further, the first suction piece is embedded on the inner peripheral wall of the joint of the first overflow pipe and the water receiving disc, and the second suction piece is embedded on the outer peripheral wall of the second overflow pipe;

preferably, the first suction member and the second suction member extend along the circumferential direction of the first overflow pipe and the second overflow pipe, respectively.

Further, the inner barrel comprises a door body for opening or closing an inner barrel opening of the inner barrel;

And a contact switch is arranged between the inner barrel and the door body and used for detecting whether the door body is closed in place.

Further, a plugging part is arranged at the bottom of the door body, at least part of the plugging part is inserted into the inner barrel opening and is in interference fit with the inner barrel opening; the inner barrel wall of the outer periphery of the inner barrel opening is provided with a barrel opening positioning piece, and the contact switch is arranged between the bottom of the door body of the outer periphery of the plugging part and the barrel opening positioning piece.

Further, the contact switch is arranged on the door body, the top of the barrel opening positioning piece is provided with a triggering part corresponding to the contact switch, and the triggering part protrudes out of the upper surface of the barrel opening positioning piece;

preferably, the contact switch is provided in a plurality of spaced arrangement around the axis of the inner tub, each of the contact switches being connected in series with each other.

Further, the accommodating chamber includes:

the positioning port is in a groove shape and is used for accommodating the barrel port positioning piece;

the outer barrel is coaxially arranged below the positioning opening and is used for accommodating the inner barrel below the barrel opening positioning piece;

preferably, the inner periphery of the groove bottom of the positioning opening is provided with a first fixing part which extends downwards and at least partially extends into the outer barrel opening.

Further, the device also comprises a second bracket which is arranged below the outer barrel and used for supporting the bottom of the outer barrel, and a first bracket which is arranged above the second bracket and used for supporting the top of the outer barrel;

Preferably, the first bracket is plate-shaped, the inner periphery of the first bracket extends to the outer barrel opening and is attached to the outer barrel opening, and the inner periphery of the first bracket is provided with a second fixing part which extends downwards and at least partially extends into the outer barrel opening;

preferably, the inner peripheral wall and the outer peripheral wall of the second fixing portion are respectively attached to the first fixing portion and the inner wall of the outer barrel.

After the technical scheme is adopted, compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the first overflow pipe is arranged on the accommodating cavity, the second overflow pipe is arranged on the inner barrel and is inserted into the first overflow pipe, so that the washing machine not only has an overflow function, but also can realize normal disassembly and assembly of the inner barrel, and the one-way valve is arranged on the second overflow pipe, so that the washing machine can carry out negative pressure dehydration on the premise of not influencing the disassembly and assembly of the inner barrel, thereby not only realizing the function of replacing the inner barrel and/or the function of negative pressure dehydration, but also avoiding excessive water inflow from overflowing to the home of a user, and improving the use experience of the user.

2. According to the utility model, the second overflow pipe and the first overflow pipe are connected through the first suction piece and the second suction piece, so that the installation effect between the first overflow pipe and the second overflow pipe can be improved in the process of disassembling and assembling the inner barrel, the second overflow pipe can be prevented from being bent, and the working stability of the overflow structure is ensured.

3. The utility model can ensure the sealing effect of the door body on the inner barrel opening by arranging the contact switch between the inner barrel and the door body, thereby ensuring that the negative pressure dehydration function of the washing machine can be stably realized and reducing the error reporting rate in the working process of the washing machine.

Meanwhile, the utility model has simple structure and obvious effect, and is suitable for popularization and use.

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:

fig. 1 is an internal system diagram of a washing machine in an embodiment of the present utility model;

FIG. 2 is an assembly view of an auxiliary lid opening mechanism and a washing machine according to an embodiment of the present utility model;

FIG. 3 is a flowchart of a control method of a washing machine in accordance with a second embodiment of the present utility model;

Fig. 4 is a flowchart illustrating a control method of a washing machine in accordance with a third embodiment of the present utility model.

The main elements in the figure are illustrated:

101. a housing; 102. a clothes putting port; 107. an air pipe; 1071. a vent valve; 1071a, valve port a;1071b, port b;1071c, valve port c; 1072. a first air tube; 1073. a second air pipe; 1074. a third air pipe; 1075. an air heater; 1080. a first overflow pipe; 1082. a second overflow pipe; 1090. a water receiving tray; 109. a water receiving cavity; 110. a drainage pipeline; 111. a drain valve; 1131. a first bracket; 1135. a first fixing portion; 1136. a second fixing portion; 14. a laser water level detection module; 2. a door body; 203. a blocking part; 3. an inner barrel; 303. a bung hole positioning member; 309. a fold portion; 4. an outer tub; 7. a negative pressure assembly; 701. a temporary storage cavity; 702. an air pump; 17. an auxiliary cover opening mechanism; 171. a handle portion; 172. prying the tongue; 19. and a contact switch.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

As shown in fig. 1 to 2, in the embodiment of the present utility model, a washing machine having a replaceable inner tub 3, which can be subjected to negative pressure dehydration, is described.

The washing machine comprises a shell 101 and an inner barrel 3, wherein a containing cavity is formed in the shell 101, the shape of the containing cavity is matched with that of the inner barrel 3, and the inner barrel 3 is detachably installed in the containing cavity. Through setting up interior bucket 3 detachable and installing in casing 101, make a washing machine can dispose a plurality of interior buckets 3, conveniently realize the change of interior bucket 3. In the use process of a user, one person can realize one barrel or one person can realize multiple barrels, the number of the inner barrels 3 can be configured according to the use requirement, classified washing is realized, the cross infection condition of different clothes can be prevented when different clothes are washed by the washing machine, meanwhile, a plurality of washing machines are not required to be configured, and the cost is saved.

In this embodiment, the inner tub 3 includes an inner tub bottom and an inner tub wall, at least the inner tub wall of the inner tub 3 is made of a soft material, and the inner tub wall has a shrinkage allowance. The washing machine is characterized in that a negative pressure component 7 is further arranged in the washing machine body, and the negative pressure component 7 is communicated with the inner barrel 3 and is used for extracting water and air in the inner barrel 3.

Be provided with the fold portion 309 that supplies interior bucket 3 shrink on the interior bucket wall, fold portion 309 can provide the surplus for interior bucket 3 shrink, can make interior bucket 3 fully shrink under the circumstances that guarantees interior bung hole and interior bucket bottom position motionless, guarantees the extrusion effect of interior bucket 3 inner wall to the washing in the interior bucket 3.

In this embodiment, be provided with overflow structure on the washing machine for in washing machine water inflow in-process, with the water discharge that exceeds the washing machine highest water level, the extra water that leads to when can guaranteeing that the flowmeter is inefficacy realizes overflow drainage, prevents that excessive water inflow from overflowing to user's home's condition emergence.

In this embodiment, the overflow structure includes a first overflow pipe 1080 communicating with the accommodating chamber and a second overflow pipe 1082 communicating with the inner tub 3, and the first overflow pipe 1080 and the second overflow pipe 1082 communicate with the accommodating chamber and the inner tub 3 from the outer sides of the accommodating chamber and the inner tub 3, respectively.

A water tray 1090 is further disposed in the casing 101 of the washing machine, one end of the first overflow pipe 1080 is communicated with the accommodating cavity, and the other end of the first overflow pipe 1080 is connected with the water tray 1090. The second overflow pipe 1082 is inserted into the first overflow pipe 1080 and is communicated with the water receiving disc 1090, so that the washing machine not only has an overflow function, but also can realize normal disassembly and assembly of the inner tub 3.

In this embodiment, the second overflow pipe 1082 is provided with a one-way valve, and the second overflow pipe 1082 is connected to the water receiving tray 1090 through the one-way valve. Thus, the washing machine can be subjected to negative pressure dehydration without affecting the attachment and detachment of the inner tub 3.

In this embodiment, by the first overflow pipe 1080 supports and leads the second overflow pipe 1082, on the one hand, the second overflow pipe 1082 is not easy to bend, on the other hand, when the washing machine performs negative pressure dehydration, the second overflow pipe 1082 can axially slide relative to the first overflow pipe 1080, and a margin is provided for the elastic deformation of the inner tub 3, so that the second overflow pipe 1082 always extends along the first overflow pipe 1080, and bending dead angles can be avoided when the second overflow pipe 1082 is installed and during the working process of the washing machine, thereby improving the working stability of the washing machine and the use experience of users.

Preferably, in this embodiment, the first overflow pipe 1080 is configured as a rigid pipe and the second overflow pipe 1082 is configured as a flexible pipe.

In this embodiment, the second overflow pipe 1082 may be integrally formed with the inner tub 3, or may be detachably assembled with the inner tub. In this embodiment, the second overflow pipe 1082 may be configured to be in plug-in fit with the inner tub wall, and be in threaded fit, so long as the inner tub 3 and the first overflow pipe 1082 are connected together.

Further preferably, the first overflow pipe 1080 extends smoothly, and no bending dead angle is provided on the extending path of the first overflow pipe 1080. Accordingly, on the one hand, the smoothness of the installation of the inner tub 3 can be improved, and on the other hand, the second overflow pipe 1082 can be prevented from generating bending dead angles, and the stability of the overflow function of the washing machine can be improved.

In this embodiment, the second overflow pipe 1082 has an outer diameter less than or equal to the inner diameter of the first overflow pipe 1080.

Preferably, in this embodiment, the outer peripheral wall of the second overflow pipe 1082 near the end of the inner tub 3 is in interference fit with the port of the first overflow pipe 1080 near the end of the inner tub 3.

Preferably, in this embodiment, the outer diameter of the second overflow pipe 1082 near the inner tub 3 is gradually reduced along the direction from the inner tub 3 to the inner tub 3, the outer diameter of the second overflow pipe 1082 near the inner tub 3 is larger than the caliber of the port of the first overflow pipe 1080 near the inner tub 3, and the outer diameter of the second overflow pipe 1082 is gradually reduced and then remains unchanged during the process of extending from the end near the inner tub 3 to the direction away from the inner tub 3.

Specifically, the end of the second overflow pipe 1082, which is close to the inner tub 3, is provided with a tapered sealing portion, the diameter of which gradually decreases along the direction from the inner tub 3 to the inner tub 3, a smooth transition connection is formed between one end of the tapered sealing portion and the inner tub wall, and the end of the tapered sealing portion, which is far from the inner tub 3, is in smooth transition connection with the outer peripheral wall of the second overflow pipe 1082. The diameter of one end of the conical sealing part far away from the inner barrel 3 is smaller than the inner diameter of the first overflow pipe 1080, the conical sealing part at least partially extends into the first overflow pipe 1080, and the peripheral wall of the conical sealing part is in interference fit with a port of one end of the first overflow pipe 1080 close to the inner barrel 3.

Preferably, in this embodiment, the tapered sealing portion is integrally formed with the second overflow pipe 1082, and the tapered sealing portion is formed by changing the outer diameter of the second overflow pipe 1082. The arrangement of the structure can improve the assembly effect between the second overflow pipe 1082 and the first overflow pipe 1080 on one hand, and can improve the connection strength between the second overflow pipe 1082 and the inner barrel 3 and the service life of the inner barrel 3 on the other hand.

Preferably, in this embodiment, the length of the second overflow pipe 1082 is greater than or equal to the length of the first overflow pipe 1080, and the end of the second overflow pipe 1082 extends at least partially into the water receiving cavity 109 of the water receiving tray 1090. Therefore, excessive water can be smoothly led into the water receiving cavity 109 of the water receiving disc 1090, and the second overflow pipe 1082 and the first overflow pipe 1080 can be prevented from being separated in the shrinkage process of the inner barrel 3, so that the working stability of the washing machine is improved.

In this embodiment, the second overflow pipe 1082 has a length capable of providing a sufficient deformation margin for the shrinkage of the inner tub 3 during the negative pressure dehydration process.

In this embodiment, the bottom of the water receiving tray 1090 is connected to a floor drain in the user's home through a pipeline, or is connected to the drain pipeline 110 of the washing machine.

Preferably, in this embodiment, a first engaging member is provided on the first overflow pipe 1080 and/or the water receiving tray 1090, a second engaging member is provided on an end of the second overflow pipe 1082, and when the inner tub 3 is installed in place, the first engaging member engages with the second engaging member.

In some possible embodiments, one of the first and second engaging members is a magnet and the other of the first and second engaging members is a magnetic member.

In other possible embodiments, the first and second engaging members are magnets, and the poles of the first and second engaging members are opposite.

Preferably, in this embodiment, the first suction member is disposed at the connection portion between the first overflow pipe 1080 and the water tray 1090; the second suction member is provided at a side of the second overflow pipe 1082 remote from one end of the inner tub 3. Thus, the occurrence of the port of the second overflow pipe 1082 being blocked can be avoided during the suction of the first suction member and the second suction member.

Preferably, in this embodiment, the first engaging member is embedded on the inner peripheral wall of the junction between the first overflow pipe 1080 and the water tray 1090, and the second engaging member is embedded on the outer peripheral wall of the second overflow pipe 1082. Thus, it can be ensured that the second overflow pipe 1082 always extends in the extending direction of the first overflow pipe 1080 during the suction of the first suction member and the second suction member.

Preferably, in the present embodiment, the first suction member and the second suction member extend along the circumferential direction of the first overflow pipe 1080 and the second overflow pipe 1082, respectively. Thus, the smoothness of the suction process of the first suction member and the second suction member and the stability of the suction effect can be improved.

In this embodiment, the washing machine further includes a door body 2, and the door body 2 is mounted on the top of the casing 101 through a hinge, for opening or closing the inner tub opening of the inner tub 3.

In this embodiment, if the inner tub 3 is to squeeze the laundry to be dehydrated, the air tightness of the inner tub 3 needs to be ensured, for this purpose, a plugging portion 203 protruding downward is provided at the bottom of the door body 2, and the shape of the outer periphery of the plugging portion 203 is adapted to the shape of the inner tub mouth. When the door body 2 is closed, the plugging part 203 is inserted into the inner barrel opening and in interference fit with the inner barrel opening, so that the inner barrel opening is closed, and the air tightness of the inner barrel 3 is ensured.

In this embodiment, a contact switch is disposed between the inner tub 3 and the door 2, and is used for detecting whether the door 2 is closed in place. The contact switch is in communication connection with a control unit of the washing machine, and the washing machine is also provided with an alarm device in communication connection with the control unit. After the door body 2 is closed, if the contact switch is not triggered, the control unit controls the alarm device to start alarming, and prompts a user to close the door body 2 again. By arranging the contact switch between the inner barrel 3 and the door body 2, the sealing effect of the door body 2 on the inner barrel opening can be ensured, thereby ensuring that the negative pressure dehydration function of the washing machine can be stably realized and reducing the error reporting rate in the working process of the washing machine.

In this embodiment, a reed pipe and a permanent magnetic block are further disposed between the door body 2 and the housing 101, the reed pipe is disposed on one of the machine body and the door body 2, the permanent magnetic block is disposed on the other of the machine body and the door body 2, and the installation positions of the reed pipe and the permanent magnetic block correspond to each other.

In this embodiment, the reed switch is in communication connection with a control unit of the washing machine. And when the permanent magnet blocks are detected by the reed pipes, the door body 2 is closed, and if the contact switch is not triggered at the moment, the alarm device starts to alarm.

Preferably, in this embodiment, a bung locating member 303 is disposed on the inner bung wall of the outer periphery of the inner bung, and a contact switch is disposed between the bottom of the door body 2 of the outer periphery of the plugging portion 203 and the bung locating member 303.

Preferably, in this embodiment, the contact switch is mounted on the door 2, a trigger portion corresponding to the contact switch is disposed on the top of the bung hole positioning member 303, and the trigger portion protrudes from the upper surface of the bung hole positioning member 303.

Further preferably, the contact switches are provided in plurality spaced around the axis of the inner tub 3, and the contact switches are connected in series with each other. When the door body 2 is closed, if any one or more contact switches are not triggered, the control unit controls the alarm device to start alarming.

In this embodiment, a laundry inlet 102 is disposed at the top of the casing 101, and the laundry inlet 102 is in communication with the inner tub 3 in the casing 101, so that a user may add laundry into the inner tub 3 or take out laundry from the inner tub 3 through the laundry inlet 102.

Preferably, in this embodiment, the laundry inlet 102 is disposed at the top of the casing 101 and is formed by recessing inward from the top of the casing 101, and the bottom shape of the door 2 is adapted to the shape of the laundry inlet 102, so as to open/close the laundry inlet 102.

The accommodating cavity comprises a positioning opening arranged in the middle of the clothes putting opening 102 and an outer barrel 4 arranged below the clothes putting opening 102. The locating opening is arranged to be groove-shaped, the clothes putting opening 102 is downwards recessed to form the clothes putting opening, the shape of the locating opening is identical to that of the barrel opening locating piece 303, and the locating opening is in circumferential limit fit with the barrel opening locating piece 303, so that the inner barrel 3 is installed in the accommodating cavity at a fixed angle.

The outer tub 4 is for accommodating the inner tub 3 below the bung hole locator 303. Specifically, the outer tub 4 is coaxially disposed below the positioning opening, and a first fixing portion 1135 extending downward and at least partially into the outer tub opening is disposed on the inner periphery of the bottom of the positioning opening. The first positioning part extends into the outer barrel opening, so that the positioning effect of the outer barrel 4 can be improved.

Preferably, in this embodiment, the outer tub 4 is mounted in the housing 101 by a tub supporter. Specifically, the barrel support comprises a first support 1131 and a second support, wherein the first support 1131 is plate-shaped and is sleeved at the top of the barrel module; the second support is plate-shaped, is parallel to the first support 1131, and is arranged below the barrel module and used for supporting the barrel module.

The side portion of the first support 1131 is provided with a first connecting plate extending downwards, the first connecting plate and the first support 1131 are integrally formed, and the lower end of the first connecting plate is connected to the second support. Specifically, the first connecting plates are at least two, the at least two first connecting plates are uniformly arranged around the first support 1131, and the first support plate can ensure parallelism between the first support 1131 and the second support.

In this embodiment, the first support 1131 is configured to limit the top of the barrel module, prevent the barrel module from toppling, and the second support is configured to support the first support 1131 and the barrel module.

Preferably, in this embodiment, the first support 1131 is configured as a ring shape with an inner circumference adapted to the shape of the outer bung hole, where the inner circumference of the first support 1131 extends to the outer bung hole and is attached to the top of the outer bung hole, and the inner circumference of the first support 1131 is provided with a second fixing portion 1136 extending downward and at least partially into the outer bung hole, where the outer diameter of the second fixing portion 1136 is the same as the inner diameter of the outer bung hole, and the outer circumferential wall of the second fixing portion 1136 is attached to the inner wall of the outer bung hole for supporting the top of the outer bung 4.

Preferably, in this embodiment, the inner diameter of the second fixing portion 1136 is the same as the inner diameter of the first fixing portion 1135, and the inner peripheral wall of the second fixing portion 1136 is attached to the outer peripheral wall of the first fixing portion 1135. Thereby, the installation stability of the tub 4 is further improved.

Preferably, in this embodiment, the peripheral surface of the plugging portion 203 is configured as a conical surface that slopes from top to bottom toward the center of the plugging portion 203. The inner wall of the inner bung hole is provided with a conical surface which inclines from top to bottom to the center of the inner bung hole.

Example two

In this embodiment, a laser water level detection module 14 for detecting the water level in the tub module is disposed on the door body 2 of the washing machine, and the laser water level detection module 14 is in communication connection with a water inlet valve and/or a water outlet valve 111 of the washing machine.

Specifically, the laser water level detection module 14 is in communication connection with a control unit of the washing machine, and is capable of detecting the water level in the tub module in real time, and when the laser water level sensor detects that the water level in the tub module rises to a certain value, the control unit controls the water inlet valve to be closed and/or controls the water outlet valve 111 to be opened.

In this embodiment, by setting the laser water level detection module 14 capable of detecting the water level in the tub module in real time and setting the laser water level detection module 14 to be in communication connection with the water inlet valve and/or the water outlet valve 111, when the water level in the washing machine rises to the highest water level, or before the water level rises to the highest water level, the water inlet valve is controlled to be closed, so that the washing machine stops water inlet, and/or the water outlet valve 111 is controlled to be opened, and redundant water inlet is discharged, thereby preventing the situation that washing water caused by excessive water inlet of the washing machine overflows to the home of a user, and improving the use experience of the user.

In this embodiment, the washing machine is a negative pressure dewatering washing machine, so the reason for the excessive water inflow may be also that the inner tub wall is not fully rebounded after shrinking, i.e. the inner tub wall is still in a shrinking state. The laser water level detection module 14 can also be used to determine whether the inner tub 3 is in a contracted state. Specifically, the control method of the washing machine comprises the following steps:

acquiring the actual water inflow of the inner barrel 3 and the water level in the inner barrel 3;

calculating water inflow according to the water level and the size of the inner barrel 3;

and judging whether the inner barrel 3 is in a contracted state according to the actual water inflow and the calculated water inflow.

In this embodiment, if the actual water inflow is smaller than the calculated water inflow, it is determined that the inner barrel 3 is still in the contracted state and is not fully rebounded.

In this embodiment, the actual water intake is measured by a flow meter on the water intake line.

In this example, if it is judged that the inner tub 3 is in the contracted state, the washing machine continues to feed water, stops feeding water when the water level rises to the highest level, and alarms.

Preferably, in this embodiment, when the actual water inflow reaches the preset water inflow and/or when the water level in the inner tub 3 rises to the highest water level, the water inlet valve is closed.

Further preferably, if the inner tub 3 is in a contracted state, when the water level in the inner tub 3 rises to the highest water level, the water inlet valve is closed, the preset water inflow and the actual water inflow are compared, if the actual water inflow is smaller than the preset water inflow, an alarm is given, and if the actual water inflow is equal to the preset water inflow, the washing program is continued to be operated.

Through the arrangement, the problem of excessive water inflow of the washing machine caused by incomplete rebound of the inner barrel 3 can be prevented, and the use experience of a user is improved.

Preferably, as shown in fig. 3, in this embodiment, a control method of the above washing machine is also disclosed, where the control method includes the following steps:

s1: acquiring the water level in the barrel module;

and S2, when the water level in the barrel module rises to the highest water level, controlling the water inlet valve to be closed and/or controlling the water discharge valve 111 to be opened.

In this embodiment, the water level in the tub module is detected by the laser water level detection module 14. Specifically, the laser water level detection module 14 is installed on the door body 2 and at a position opposite to the inner barrel opening, the laser water level detection module 14 comprises a laser detection element for emitting/receiving laser, the laser water level detection module 14 emits the laser vertically downwards, returns after reaching the water surface, and calculates the liquid level by the return time.

Through the arrangement, the condition that excessive water inflow is caused by failure of the flowmeter or distortion of the detection result of the flowmeter, so that excessive water inflow overflows to the home of a user can be avoided. For example: the water inlet valve is invalid and can not be closed or can not be closed completely, or the water is cut off in the washing process, a certain amount of washing water is in the barrel module, water inflow is restarted after the water is supplied, or the flowmeter is invalid and can not detect the water inflow accurately. At this time, the washing machine may detect the water level in the tub module through the laser water level detection module 14, preventing excessive inflow of water.

Of course, the flow meter can be omitted from the washing machine, and the water level in the tub module can be detected only by the laser water level detection module 14. Preferably, in this embodiment, the flow meter and the laser water level detection module 14 are installed on the washing machine at the same time, and the detection results of the two may be mutually corrected.

Preferably, in the present embodiment, in the control method of a washing machine, the step S2 specifically includes the following steps:

s2.1: judging whether the water level in the barrel module rises to a preset value, if not, executing S1; if yes, executing S2.2;

s2.2: controlling the water inlet valve to be closed, and continuously acquiring the water level in the barrel module;

S2.3: judging whether the water level in the barrel module is continuously increased, if so, executing S2.4; if not, executing S2.6;

s2.4: controlling the drain valve 111 to open;

s2.5: the alarm module starts to alarm;

s2.6: and (5) ending.

Preferably, in this embodiment, the preset value of the water level in the tub module is any water level that is smaller than the highest water level in the tub module.

In this embodiment, by setting the laser water level detection module 14 to detect the water level in the tub module after the water inlet valve is closed, the situation that excessive water is overflowed out of the washing machine due to the failure of the water inlet valve can be prevented, and the use experience of a user is improved.

In this embodiment, through setting up alarm module, can make the user in time discover that washing machine has a problem, on avoiding washing water overflow to the outside basis of washing machine, remind the user in time to close the water source, reduce the waste of water resource, simultaneously, can remind the user to overhaul the water intaking valve.

Example III

In the embodiment of the present utility model, as shown in fig. 2, a washing machine is described, which includes a machine body and a door body 2, the door body 2 is rotatably mounted on the machine body through a hinge, and the door body 2 has an open position for opening a laundry putting-in opening 102 on the machine body, and a closed position for closing the laundry putting-in opening 102.

In the embodiment, when the washing machine is in a dehydration stage, the air pressure in the inner barrel 3 is smaller than the air pressure outside, and the inner wall of the inner barrel 3 extrudes washings to complete dehydration; when the washing machine is in the water inlet stage, the water discharge stage and the washing stage, the inside of the inner tub 3 is balanced with the outside air pressure.

In order to balance the internal air pressure and the external air pressure of the inner barrel 3, an air vent communicated with the inner barrel 3 is formed at the bottom of the sealing part 203. The machine body is provided with a vent valve 1071 communicated with the external atmosphere, and the vent valve 1071 is communicated with a vent through an air pipe 107.

In this embodiment, the negative pressure assembly 7 communicates with the inner tub 3 from the bottom of the inner tub 3. Specifically, the negative pressure assembly 7 includes a temporary storage cavity 701 and an air pump 702, the temporary storage cavity 701 is connected with a water outlet of the inner barrel 3 on the bottom of the inner barrel, an input end of the air pump 702 is connected with the temporary storage cavity 701 from the top of the temporary storage cavity 701, an output end of the air pump 702 is communicated with the external atmosphere, a water discharge pipeline 110 of the washing machine is connected with the temporary storage cavity 701 from the bottom of the temporary storage cavity 701, and an on-off valve is arranged on the water discharge pipeline 110 of the washing machine.

Thus, when the air pump 702 is operated, the air in the temporary storage chamber 701 can be drawn out, so that a negative pressure is formed in the temporary storage chamber 701, thereby drawing out the water and the air in the inner tub 3. After the water and air in the inner barrel 3 enter the temporary storage cavity 701, the water and the air are separated, the water is temporarily stored at the bottom of the temporary storage cavity 701, the air rises to the top of the temporary storage cavity 701, and the air is pumped out by the air pump 702. When the air pump 702 stops operating, the water in the temporary storage chamber 701 is discharged from the drain line 110.

Preferably, in this embodiment, the vent valve 1071 includes a vent valve body and a valve core disposed in the vent valve body, the vent valve body includes at least three valve ports, namely, a valve port a1071a, a valve port b1071b, and a valve port c1071c, and the valve core of the vent valve 1071 is switched in the vent valve body, so that any two valve ports of the vent valve body are communicated, or three valve ports of the vent valve body are simultaneously communicated.

In some possible embodiments, the vent valve body includes three ports, the spool of the vent valve 1071 has a T-shaped passage, and the spool of the vent valve 1071 is switchable by rotation such that any two ports of the T-shaped passage correspond to any two ports of the vent valve body, or such that three ports of the T-shaped passage correspond to three ports of the vent valve body, respectively.

In this embodiment, the valve port a1071a of the ventilation valve body is connected to the ventilation port at the bottom of the door body 2 from the inside of the door body 2, so as to be communicated with the inner tub 3, the valve port b1071b is connected to the output end of the air pump 702, and the valve port c1071c is communicated with the outside atmosphere.

Specifically, in this embodiment, the valve port a1071a is communicated with the inner barrel 3 through a first air pipe 1072, and the valve port b1071b is communicated with the output end of the air pump 702 through a second air pipe 1073; the input end of the air pump 702 is communicated with the top of the temporary storage cavity 701 through a third air pipe 1074.

In this embodiment, one end of the first air pipe 1072 is connected to the valve port of the air valve 1071, and the other end extends into the door 2 through the hinge, and is connected to the air port from the inside of the door 2.

Preferably, the valve core of the ventilation valve 1071 is driven by a stepping motor, and the stepping motor is electrically connected with a control unit of the washing machine.

When the washing machine enters a dewatering stage, the stepping motor drives the valve core to rotate to switch, so that the valve port a1071a is closed, and the valve port b1071b and the valve port c1071c are communicated; when the washing machine enters the water inlet stage, the water discharge stage and the washing stage, the valve core is driven by the stepping motor to rotate to switch the valve port a1071a and the valve port c1071c, so that the internal air pressure and the external air pressure of the inner barrel 3 are kept balanced, and water flow can normally flow into or flow out of the inner barrel 3.

Preferably, in this embodiment, the air pump 702 is operated in a forward direction to allow air to enter from its input and exit from its output during the dehydration stage of the washing machine.

In this embodiment, by setting the output end of the air pump 702 to communicate with the ventilation valve 1071, the washing machine can control the air pump 702 to operate, so that the air flow circularly flows between the inner tub 3 and the ventilation valve 1071, specifically, at this time, the valve port a1071a of the ventilation valve 1071 communicates with the valve port b1071b, and the valve port c1071c is closed; alternatively, the air flow is circulated between the inner tub 3 and the ventilation valve 1071, and the external air flow is sucked through the valve port c1071c, and specifically, at this time, the valve port a1071a communicates with the valve port b1071b and the valve port c1071c, thereby preventing the laundry in the inner tub 3 from generating the odor.

Preferably, in this embodiment, when the air flow in the washing machine needs to circulate, the air pump 702 runs in the opposite direction, the air flow enters the air pump 702 from the output end of the air pump 702, and the air pump 702 is discharged from the input end of the air pump 702. Therefore, the air flow enters the inner barrel 3 from the bottom of the inner barrel 3, the situation that the water outlet of the inner barrel 3 is blocked by clothes at the water outlet of the inner barrel 3 can be prevented, the stability of air flow circulation is improved, and meanwhile, the arrangement scheme can also ensure that the air flow in the inner barrel 3 flows fully.

Preferably, in this embodiment, the first air tube 1072, the second air tube 1073, and/or the third air tube 1074 are provided with an air heater 1075. By providing the air heater 1075 on the air pipe 107, the temperature of the circulating air flow can be raised, the effect of drying clothes is achieved, the clothes in the inner tub 3 are quickly dried, and the generation of peculiar smell of the clothes in the inner tub 3 is further prevented.

Further preferably, the air heater 1075 is provided on the first air pipe 1072. Through setting up air heater 1075 on first gas tube 1072, can avoid the washing machine to take out the great air current of humidity in follow interior bucket 3 and flow through air heater 1075 in carrying out the negative pressure dehydration in-process, can guarantee the drying of air heater 1075 in washing machine normal use to air heater 1075's life has been improved.

As shown in fig. 4, in the embodiment of the present utility model, a control method of the above washing machine is also disclosed, and specifically, the control method includes the following steps:

after the washing is finished, the control unit starts timing;

after the first preset time, if the door body 2 is not detected to be opened, the air pump 702 starts to operate, so that the air flow circularly flows in and out of the inner tub 3.

In this embodiment, the specific value of the first preset time may be set according to the season in which the first preset time is located and the actual requirement of the user.

Specifically, if the temperature of the external environment of the washing machine is higher, the first preset time is appropriately shortened, and if the temperature of the external environment of the washing machine is lower, the first preset time is appropriately increased, so that the situation that no peculiar smell is generated in the washing machine can be ensured.

If the user needs to utilize the device to dry the washed clothes, the first preset time can be adjusted according to the actual requirement of the user. Preferably, in this embodiment, the minimum value of the first preset time is zero.

Preferably, in this embodiment, before the air pump 702 operates, the valve element of the air vent valve 1071 is rotated, so that the valve port a1071a communicates with the valve port b1071b, or the valve port a1071a communicates with the valve ports b1071b and c1071 c.

Preferably, in this embodiment, the air pump 702 is operated in the reverse direction, so that the air flows through the air pump 702, the temporary storage chamber 701, the inner tub 3 and the ventilation valve 1071 in sequence.

In this embodiment, the washing machine includes a ventilation process and a drying process.

If the user selects the ventilation program, the air pump 702 is operated, the air heater 1075 is not operated, and if the user selects the drying program, the air pump 702 and the air heater 1075 are operated synchronously.

When the user selects the drying course, the air pump 702 and the air heater 1075 are immediately operated to dry the laundry in the inner tub 3 after the washing is finished.

Preferably, a humidity sensor is provided in the inner tub 3 and/or in the air pipe 107, and the air pump 702 and the air heater 1075 are stopped when the air level of the air flow reaches a preset value.

Preferably, in this embodiment, the humidity sensor is disposed on the first air tube 1072.

It is further preferable that the humidity sensor is provided on the first air pipe 1072 between the air heater 1075 and the inner tub 3.

Preferably, in the present embodiment, when a user selects a drying program, the control method of the washing machine includes the steps of:

S100: finishing the washing;

s101: the control unit starts timing;

s200: judging whether the door body 2 is opened, if so, executing S201, and if not, executing S101;

s201: ending the program;

s202: if the first preset time is reached, executing S203, if not, executing S101;

s203: valve port a1071a of the vent valve 1071 is communicated with valve port b1071b, the air pump 702 starts to run reversely, and the air heater 1075 runs synchronously;

s204: when the temperature of the air flow in the inner tub 3 rises to a preset temperature, the valve port a1071a of the ventilation valve 1071 is simultaneously communicated with the valve ports b1071b and c1071 c;

s300: when the humidity of the air flow reaches a preset value, S201 is performed.

In this embodiment, by setting, when the air flow temperature increases to the preset temperature, the valve port a1071a of the ventilation valve 1071 is controlled to be simultaneously communicated with the valve port b1071b and the valve port c1071c, so that the air flow temperature between the inner tub 3 and the air pipe 107 can be rapidly increased, and the drying efficiency of the clothes in the inner tub 3 is improved.

In this embodiment, the air heater 1075 is disposed on the first air tube 1072, the air pump 702 is disposed between the air vent valve 1071 and the temporary storage cavity 701, the air pump 702 is operated, so that the air flow flowing in from the first air tube 1072 and the outside flows through the air pump 702 and the temporary storage cavity 701 after merging at the air vent valve 1071, the wet and hot air flow flowing out from the first air tube 1072 merges with the air flow flowing in from the outside and is condensed, the air flow in the inner tub 3 is dried rapidly, and the drying effect is improved.

In some possible embodiments, the valve port c1071c of the vent valve 1071 is disposed at the bottom of the vent valve 1071, and the condensed water separated out by the hot and humid air flow flowing out from the first air pipe 1072 is directly discharged from the valve port c1071c to the outside of the washing machine.

Preferably, in other possible embodiments, the valve port b1071b is disposed at the bottom of the ventilation valve 1071, after the hot and humid air flowing out of the inner tub 3 merges with the cold air flowing out of the outer tub, the condensed water flows through the second air pipe 1073, the impeller chamber of the air pump 702, and the third air pipe 1074, and then enters the temporary storage chamber 701, and finally the condensed water is discharged from the drain pipeline 110 at the bottom of the temporary storage chamber 701. Therefore, the negative pressure component 7 of the washing machine is fully utilized, so that clothes in the inner barrel 3 are quickly dried, meanwhile, condensed water can be directly discharged from the water discharge pipeline 110 of the washing machine, and the use experience of a user is improved.

Preferably, in this embodiment, when the user selects the ventilation procedure, after the washing machine finishes washing, if the door body 2 is kept closed continuously after the first preset time, the ventilation valve 1071 is directly switched to the simultaneous communication between the valve port a1071a and the valve ports b1071b and c1071c, and the air pump 702 is operated in the reverse direction, so that the air flow in the inner tub 3 circulates and fresh air is introduced.

After the air pump 702 is operated for a certain time, the air pump 702 stops operating, then the control unit restarts timing, and at the same time, whether the door body 2 is opened is detected, and after a second preset time, if the door body 2 is kept closed continuously, the air pump 702 starts operating again. The second preset time may be the same as the first preset time or may be different from the first preset time.

Preferably, in this embodiment, during operation of the air pump 702, the humidity sensor is operated synchronously, and when detecting that the humidity of the air flow flowing through the humidity sensor reaches a preset value, the control unit stops timing, and the air pump 702 stops operating.

In this embodiment, the bottom of the water-receiving tray 1090 is communicated with a floor drain in a user's home, or the bottom of the water-receiving tray 1090 is communicated with a drain pipeline 110 of a washing machine, and an on-off valve is arranged at the bottom of the water-receiving tray 1090.

When the air pump 702 runs reversely, the on-off valve is closed, and the port of the first overflow pipe 1080 near one end of the inner barrel 3 is closed by the conical part between the second overflow pipe 1082 and the inner barrel 3, so that the air tightness between the two is ensured. Meanwhile, the first suction member and the second suction member are arranged in a ring shape, which is also beneficial to enhancing the air tightness between the first overflow pipe 1080 and the second overflow pipe 1082 and improving the drying and ventilation effects.

Preferably, in this embodiment, when the air pump 702 is operated, the on-off valve is opened for a certain period of time and then closed, so that the tapered portion is tightly engaged with the port of the first overflow pipe 1080, and air leakage at the port of the first overflow pipe 1080 is prevented.

Preferably, in this embodiment, a drain valve 111 is further disposed between the temporary storage cavity 701 and the drain port of the inner tub 3, and the drain valve 111 is opened during draining and dewatering, and the drain valve 111 is closed during a washing stage and a water inlet stage. By providing the drain valve 111, the washing machine can be prevented from entering the temporary storage cavity 701 during water inlet and washing, and the washing machine can normally operate.

In this embodiment, when the washing machine enters the drain phase, the valve port a1071a communicates with the valve port c1071c and/or the valve port b1071 b.

Preferably, in the present embodiment, when the washing machine is draining, the drain valve 111 is opened, the valve port a1071a of the vent valve 1071 is simultaneously communicated with the valve ports b1071b and c1071c, and the air pump 702 is operated in the forward direction, thereby accelerating the draining of the washing water in the inner tub 3.

When the water level in the temporary storage cavity 701 reaches a preset value, the valve port b1071b of the ventilation valve 1071 is communicated with the valve port c1071c, and the air pump 702 runs reversely, so that the washing water in the temporary storage cavity 701 is quickly discharged from the drainage pipeline 110 at the bottom of the temporary storage cavity 701;

Preferably, the water discharge valve 111 is closed and the on-off valve is opened before the air pump 702 is reversely operated.

Example IV

In this embodiment, the washing machine is further provided with an auxiliary cover opening mechanism 17, so that a user can open the door body 2 more laborsaving through the auxiliary cover opening mechanism 17, and the use experience of the user is improved.

The auxiliary cover opening mechanism 17 is in a sheet shape and comprises a prying tongue portion 172, a handle portion 171 and a rotating shaft portion, wherein the prying tongue portion 172 is arranged in a gap between the shell 101 and the door body 2, and the shape of the prying tongue portion is matched with the shape of the gap between the shell 101 and the door body 2; the handle 171 is disposed at one end of the prying tongue 172 away from the inner barrel 3, and is integrally formed with the prying tongue 172; the shaft portions are provided on both sides of the junction of the pry tongue portion 172 and the handle portion 171.

Preferably, the prying tongue 172, the handle 171 and the shaft are integrally formed.

The shell 101 is provided with a shaft seat, and the auxiliary cover opening mechanism 17 is hinged with the shaft seat through a rotating shaft part. The user can rotate the auxiliary door opening mechanism 17 through the handle portion 171, and the pry tongue portion 172 of the auxiliary door opening mechanism 17 prys the door body 2 open.

The handle portion 171 of the auxiliary lid opening mechanism 17 extends along the outer peripheral wall of the door body 2 to a side away from the housing 101. Accordingly, when the door body 2 is closed, the handle 171 is attached to the door body 2, so that the integrity of the outer appearance of the washing machine can be improved, the visual effect of the user can be improved, and the interference of the rotation of the handle 171 by the housing 101 can be avoided, so that the auxiliary lid opening mechanism 17 can have a larger rotation margin, and the prying tongue 172 can be fully utilized.

The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited to the above-mentioned embodiment, but is not limited to the above-mentioned embodiment, and any simple modification, equivalent change and modification made by the technical matter of the present utility model can be further combined or replaced by equivalent embodiments within the scope of the technical proposal of the present utility model without departing from the scope of the technical proposal of the present utility model.

Claims (10)

1. A washing machine comprising a housing chamber, and an inner tub (3) removably mounted in the housing chamber, characterized in that it further comprises:

a first overflow pipe (1080), one end of which is communicated with the accommodating cavity, and the other end of which is connected with a water receiving disc (1090);

and one end of the second overflow pipe (1082) is communicated with the inner barrel (3), the other end of the second overflow pipe is inserted into the first overflow pipe (1080), and a one-way valve is arranged on the second overflow pipe (1082).

2. A washing machine as claimed in claim 1, characterized in that,

the first overflow pipe (1080) is connected with the accommodating cavity from the outer side of the accommodating cavity, the second overflow pipe (1082) is connected with the inner barrel (3) from the outer side of the inner barrel wall, and the outer diameter of the second overflow pipe (1082) is smaller than or equal to the inner diameter of the first overflow pipe (1080).

3. A washing machine as claimed in claim 2, characterized in that,

the length of the second overflow pipe (1082) is greater than or equal to the length of the first overflow pipe (1080), and the end of the second overflow pipe (1082) at least partially extends into the water receiving cavity (109) of the water receiving disc (1090).

4. A washing machine as claimed in claim 3, characterized in that,

the first overflow pipe (1080) and/or the water receiving disc (1090) are/is provided with a first suction piece, the end part of the second overflow pipe (1082) is provided with a second suction piece, and the first suction piece and the second suction piece are sucked.

5. A washing machine as claimed in claim 4, wherein,

the first suction piece is embedded on the inner peripheral wall of the joint of the first overflow pipe (1080) and the water receiving disc (1090), and the second suction piece is embedded on the outer peripheral wall of the second overflow pipe (1082).

6. Laundry washing machine according to any one of claims 1 to 5, characterized in that it further comprises a door (2) for opening or closing the inner tub mouth of the inner tub (3);

A contact switch is arranged between the inner barrel (3) and the door body (2) and is used for detecting whether the door body (2) is closed in place.

7. A washing machine as claimed in claim 6, wherein,

the bottom of the door body (2) is provided with a blocking part (203), and the blocking part (203) is at least partially inserted into the inner barrel opening and is in interference fit with the inner barrel opening; the inner barrel wall of the outer periphery of the inner barrel opening is provided with a barrel opening positioning piece (303), and the contact switch is arranged between the bottom of the door body (2) of the outer periphery of the plugging part (203) and the barrel opening positioning piece (303).

8. A washing machine as claimed in claim 7, characterized in that,

the contact switch is arranged on the door body (2), the top of the bung hole locating piece (303) is provided with a trigger part corresponding to the contact switch, and the trigger part protrudes out of the upper surface of the bung hole locating piece (303).

9. The washing machine as claimed in claim 7, wherein the accommodating chamber includes:

a positioning opening, which is arranged in a groove shape and is used for accommodating a barrel opening positioning piece (303);

the outer barrel (4) is coaxially arranged below the positioning opening and is used for accommodating the inner barrel (3) below the barrel opening positioning piece (303);

the inner periphery of the groove bottom of the positioning opening is provided with a first fixing part (1135) which extends downwards and at least partially extends into the outer barrel opening.

10. The washing machine according to claim 9, further comprising a second bracket provided below the tub (4) for supporting the bottom of the tub (4), and a first bracket (1131) provided above the second bracket for supporting the top of the tub (4);

The first bracket (1131) is plate-shaped, the inner periphery of the first bracket (1131) extends to the outer barrel opening and is attached to the outer barrel opening, and the inner periphery of the first bracket (1131) is provided with a second fixing part (1136) which extends downwards and at least partially extends into the outer barrel opening;

the inner peripheral wall and the outer peripheral wall of the second fixing part (1136) are respectively attached to the inner walls of the first fixing part (1135) and the outer barrel (4).