CN111519404A

CN111519404A - Washing machine

Info

Publication number: CN111519404A
Application number: CN201910103732.6A
Authority: CN
Inventors: 赵志强; 许升; 吕佩师
Original assignee: Qingdao Haier Washing Machine Co Ltd; Qingdao Haier Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Qingdao Haier Co Ltd
Priority date: 2019-02-01
Filing date: 2019-02-01
Publication date: 2020-08-11
Anticipated expiration: 2039-02-01
Also published as: CN111519404B; JP2022524918A; JP7293367B2; WO2020156493A1

Abstract

The invention discloses a washing machine, comprising a shell, a washing barrel which is rotatably arranged in the shell, wherein the washing barrel is a water containing barrel and is provided with a first chamber and a second chamber, the first chamber is used for containing and washing fabrics, and the second chamber is communicated with the first chamber at least at the bottom part, so that the liquid levels of the two chambers are kept consistent and are isolated from the fabrics in the first chamber; the washing machine is also provided with a liquid level detection device for detecting the height of the liquid level in the second chamber, and the water level data of the washing barrel is obtained by detecting the height of the liquid level in the second chamber. The washing machine has the advantages of extremely high reliability, accurate measurement, mature and reliable technical scheme and low price, can meet the requirements of users, and effectively improves the satisfaction degree of the users.

Description

Washing machine

Technical Field

The invention belongs to the field of washing equipment, and particularly relates to a washing machine.

Background

As shown in fig. 1, a conventional pulsator type washing machine generally includes a pulsator 1 ', an inner tub 2 ', an outer tub 3 ' and a cabinet 4 ', which are sequentially disposed from inside to outside, wherein the pulsator 1 ' is disposed at the center of the bottom of the inner tub 2 ' and is rotated by a driving unit 5 '. The top of the inner barrel 2 ' is provided with a balance ring 6 ', the side wall of the inner barrel 2 ' is longitudinally provided with a plurality of rows of dewatering holes 21 ', the bottom of the inner barrel 2 ' is provided with a drainage hole 22 ', and the drainage hole 22 ' is also penetrated by an output shaft 51 ' of the driving device 5 '. As shown in fig. 2, an air chamber 31 'and a water level sensor (not shown) are provided at the bottom of the side wall of the outer tub 3', a overflow 32 'is provided at the top, a drain 7' is provided at the bottom, the air chamber 31 'and the water level sensor are used for detecting the water level of the outer tub 3', and the overflow 32 'is used for draining excessive intake water from the overflow 32' when the water level sensor is damaged.

When the washing machine starts to work, the drain valve 8 'is closed, water enters the inner barrel 2', and when the inner barrel 2 'is filled with water, the whole outer barrel 3' is filled with water through the dewatering holes 21 'on the side wall of the inner barrel 2', namely, water is filled between the bottom of the outer barrel 3 'and the bottom of the inner barrel 2' and between the side wall of the outer barrel 3 'and the side wall of the inner barrel 2'; the water level in the barrel is detected through the air chamber 31 ' and the water level sensor, after the water in the barrel reaches a set water level, water feeding is stopped, the washing machine starts washing, specifically, the driving device 5 ' drives the impeller 1 ' to rotate in a reciprocating manner, the water and clothes in the inner barrel 2 ' roll over along with the rotation of the impeller 1 ', the clothes rub against each other, and meanwhile, the rolled clothes generate repeated friction with the impeller and the side wall of the inner barrel, so that the purpose of washing is achieved; after washing, the washing machine needs to discharge water flow in the tub, and then dehydrates clothes, specifically, when draining, the drain valve 8 ' is opened, the water flow between the outer tub 3 ' and the inner tub 2 ' is discharged out of the box body 4 ' through the drain opening 7 ' at the bottom of the outer tub 3 ', the drain valve 8 ' and the drain pipe 9 ' in sequence, meanwhile, the water in the inner tub 2 ' is discharged through the drain hole 21 ' to keep consistent with the liquid level of the outer tub 3 ', until the water flow in the inner tub 2 ' flows downwards, flows into the outer tub 3 ' from the drain hole 22 ' at the bottom of the inner tub 2 ', and then is discharged from the drain opening 7 ' at the bottom of the outer tub 3 '; during dewatering, the driving device 5 'drives the inner tub 2' to rotate at high speed, and the water in the clothes is discharged to the outer tub 3 'from the dewatering holes 21' on the side wall of the inner tub 2 'and the drain holes 22' at the bottom under the action of centrifugal force, and then discharged out of the washing machine through the drain opening 7 'and the drain pipe 9' (see fig. 1).

Because the existing impeller type washing machine does not participate in washing by the water filled between the inner barrel and the outer barrel wall, the water really participating in washing is only the part in the inner barrel, which causes great waste of water resources, and in addition, the excessive water between the inner barrel and the outer barrel can also reduce the concentration of detergent/washing powder in washing liquid.

Meanwhile, as water flow frequently enters and exits between the inner barrel and the outer barrel, after the continuous use, the area between the side walls of the inner barrel and the outer barrel also forms a space for storing dirt and dirt, and water scale in tap water, free substances of washing powder, cellulose of clothes, organic matters of human bodies, dust and bacteria brought by the clothes are easily remained between the side walls of the inner barrel and the outer barrel. The mold is a large amount of dirt accumulated in the long-term washing machine, and the dirt is bred and propagated because the dirt can not be effectively removed, if the dirt which can not be seen by a user is not cleaned, bacteria can be attached to clothes after next washing to bring to a human body, and the problem of cross infection of washing is caused.

In order to realize the washing water-saving function, many manufacturers improve the washing machine, and provide a nonporous inner barrel washing machine, namely, the whole inner barrel adopts a closed water-containing design, only a circle of dewatering holes are arranged on the barrel wall below a balance ring, the middle lower part of the barrel wall of the inner barrel is not provided with small holes for throwing water, and washing and rinsing water is completely concentrated in the inner barrel, so that the inner barrel is not only a water-containing washing barrel, but also a centrifugal dewatering barrel, and the outer barrel of the water-saving washing machine is actually only a channel for collecting the water thrown out when the nonporous inner barrel is dewatered. According to different drainage modes, the washing machine is divided into a water-saving washing machine with an inner barrel provided with a water outlet at the bottom and a completely sealed structure at the bottom, the water outlet is arranged at the bottom, the water outlet is closed during washing, the water outlet is opened during drainage, most of water is drained from the inner barrel through the water outlet, the inner barrel rotates at a high speed during centrifugal dehydration, and residual water in clothes is thrown into the outer barrel along the barrel wall of the inner barrel without holes under the action of centrifugal force, and then is collected to the drain pipe at the bottom of the outer barrel through the wall of the outer barrel to be drained out. The water-saving washing machine with completely sealed bottom features that the rotation speed of internal drum is controlled to discharge the water from internal drum through a circle of dewatering holes on the top of drum wall. The washing machine saves water in an interlayer of an inner barrel and an outer barrel of the traditional washing machine, and the water-saving effect can reach more than 50 percent on average.

Chinese patent application No. CN201120200858.4 discloses a water-saving washing machine with a non-porous inner tub, which comprises a control seat, a box body, a non-porous washing inner tub, a pulsator, a water containing tub, a driving system and a control system, wherein the control seat is installed on the box body, the control seat is provided with the control system, the water containing tub is suspended in the box body, the non-porous washing inner tub is installed in the water containing tub, the pulsator is installed in the non-porous washing inner tub, the driving system is connected to the non-porous washing inner tub and the pulsator, the body of the non-porous washing inner tub has no water outlet hole, the upper part of.

The water-saving washing machine has the advantages that water enters the inner barrel directly, the water level in the outer barrel of the traditional washing machine can not be detected any more, the flow valve is used for detecting the water inflow to control the water level of the inner barrel or the weight sensor is used for detecting the weight change to calculate the water inflow, however, the flow valve is used for detecting the water inflow or the weight sensor is used for detecting the water inflow, for some special conditions, for example, part of water exists in the inner barrel before the water inflow, the flow valve cannot detect the normal water inflow to cause the water overflow, or the flow valve fails to cause the water inflow to be stopped, and then or during washing, the washing water in the inner barrel generates vortex and surge under the violent reciprocating stirring of the impeller, and part of the washing water splashes into the outer barrel through the dehydration holes below the balance ring due to the surge effect of the washing.

The present invention has been made in view of this situation.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide the washing machine which can accurately detect the liquid level height in the rotary barrel capable of containing water.

In order to solve the technical problems, the invention adopts the technical scheme that: a washing machine comprising: a housing;

a washing tub as a water tub rotatably provided in the washing machine housing;

the washing tub is provided with a washing tub,

a first chamber for holding and washing fabric;

a second chamber communicating with the first chamber at least at the bottom, such that the liquid levels of the two chambers are maintained uniform and isolated from the fabric in the first chamber;

the washing machine is also provided with a liquid level detection device for detecting the liquid level in the second chamber.

Preferably, the liquid level detection device is a non-contact liquid level measurement device.

The further scheme is that a communicating vessel extending from bottom to top is arranged on the peripheral wall of the washing barrel, a water through hole communicated with the communicating vessel is formed in the lower portion of the washing barrel, a first chamber is formed in the space inside the washing barrel, and a second chamber is formed in the space inside the communicating vessel.

Or, a further alternative is that a communicating vessel extending from bottom to top is arranged on the inner peripheral wall of the washing barrel to divide the inner space of the washing barrel into two chambers, the space inside the communicating vessel forms a second chamber, the space outside the communicating vessel forms a first chamber, and the lower part of the communicating vessel is provided with a water through port communicating the two chambers.

The upper part of the communicating vessel is provided with an air vent communicated with the outside atmosphere, the horizontal height of the air vent is higher than the height of the highest water level of the preset washing barrel, and the horizontal height of the water through hole is not higher than the height of the lowest water level of the preset washing barrel;

preferably, the air vent at the upper part of the communicating vessel forms a water outlet which is thrown outwards under the action of the rotating centrifugal force of the washing barrel;

more preferably, the upper part of the peripheral wall of the washing barrel is provided with a water outlet which is thrown outwards under the action of the rotating centrifugal force of the washing barrel, and the height of the water outlet is higher than the height of the preset highest water level of the washing barrel.

The washing machine also comprises an outer barrel which is positioned outside the washing barrel, and when dewatering and/or draining, the water in the communicating vessel is thrown into the outer barrel by the air vent under the action of the centrifugal force generated by the rotation of the washing barrel and is drained;

preferably, the vent is located below the outer barrel cover.

The further proposal is that a drainage channel for guiding water from top to bottom is respectively arranged on the peripheral wall of the washing barrel and the outer side of the communicating vessel, the upper part of the drainage channel is communicated with the water outlet, the lower end of the drainage channel drains into the outer barrel, at least one part of the outer barrel is arranged below the washing barrel, the upper edge of the peripheral wall of the outer barrel side extends upwards and is higher than the position of the water outlet at the lower end of the drainage channel;

preferably, the upper edge of the outer barrel is not higher than the upper opening of the washing barrel;

more preferably, the upper edge of the outer tub is not higher than a half of the washing tub.

The liquid level detection device comprises an ultrasonic liquid level detector, and the ultrasonic liquid level detector is arranged on a washing machine control panel seat or a washing machine outer barrel cover above the second chamber, or is arranged on a washing machine outer barrel bottom below the second chamber, or is arranged on a driving unit mounting component below the washing machine outer barrel bottom, or is arranged on the shell.

Or, alternatively, the liquid level detection device is a non-contact liquid level measurement device, and comprises a radar liquid level measuring device or a laser liquid level measuring device, an opening is formed in the top of the second chamber, and the liquid level detection device is installed right above the opening in the top of the second chamber;

preferably, the device is arranged on the lower part of the control panel seat of the washing machine or the lower surface of the outer barrel cover of the washing machine.

Or, a further alternative scheme is that the washing machine further comprises a wave wheel installed inside the washing barrel, the wave wheel is coaxial with the washing barrel, a communicating vessel extending from bottom to top is arranged in the center of the wave wheel to divide the internal space of the washing barrel into two chambers, the space inside the communicating vessel forms a second chamber, the space outside the communicating vessel forms a first chamber, and a water through port for communicating the two chambers is arranged at the lower part of the communicating vessel;

preferably, the outer wall of the communicating vessel forms a stirring structure of the impeller.

Furthermore, the top of the communicating vessel is closed, the side wall of the upper part of the communicating vessel is provided with an air vent, and the liquid level detection device is a non-contact liquid level measurement device and is arranged on the lower surface of the upper cover of the washing machine;

preferably, the liquid level detection device is located directly above the communicating vessel when the upper cover is closed.

After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.

The washing machine disclosed by the invention is mainly used for detecting the liquid level of a washing machine with a hole-free inner barrel, adopts non-contact liquid level detection, utilizes a liquid level detection device with a certain distance to remotely measure the height of the liquid level, and isolates a cavity for detecting the liquid level from a cavity for detecting fabrics in the washing barrel in order to avoid the influence of the fabrics in the washing barrel on the detection.

In addition, the washing machine provided by the invention not only can be used for a water-saving washing machine without water in a barrel, but also can be used for an expansion washing machine for relatively expanding the washing capacity, the application range is wide, and the research, development and production cost is saved.

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

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic view of a prior art washing machine;

FIG. 2 is a schematic view of a structure of an outer tub of a related art washing machine;

FIG. 3 is a schematic view of the liquid level detecting device of the present invention mounted on the upper surface of the outer barrel cover;

FIG. 4 is a schematic view of the liquid level detecting device of the present invention installed at the bottom of an outer tub;

FIG. 5 is a schematic view of the liquid level detecting device of the present invention mounted on the lower surface of the outer barrel cover;

FIG. 6 is a schematic view of a drainage pattern of the washing machine according to the present invention;

FIG. 7 is a schematic view of the structure of the communicating vessel installed in the center of the pulsator according to the present invention.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 3 to 7, the washing machine according to the present invention includes a housing 1, a washing tub 2 rotatably disposed in the housing 1, the washing tub 2 being a water tub, a balance ring 3 disposed on an upper portion of the washing tub 2, an outer tub 4 disposed outside the washing tub 2 for collecting water drained from the washing tub, the outer tub 4 being connected to the housing 1 through a vibration damping unit for supporting the washing tub 2, the vibration damping unit being a hanger suspension vibration damping structure and/or a bottom vibration damping support structure, the hanger suspension vibration damping structure being shown. The washing tub 2 has a first chamber 21 and a second chamber 22, the first chamber 21 is used for containing and washing the fabrics, the second chamber 22 is communicated with the first chamber 21 at least at the bottom, so that the liquid levels of the two chambers are consistent and are isolated from the fabrics in the first chamber 21; the washing machine is also provided with a liquid level detection device 5 for detecting the height of the liquid level in the second chamber 22, and the water level data of the washing barrel is obtained by detecting the height of the liquid level in the second chamber 22.

Preferably, the liquid level detection device 5 is a non-contact liquid level measurement device, and includes at least one of an ultrasonic liquid level meter 51, a radar liquid level meter 52 and a laser liquid level meter 53.

The upper part of the peripheral wall of the washing barrel 2 is provided with a water outlet 20 which is thrown outwards under the action of the rotating centrifugal force of the washing barrel, the height of the water outlet is higher than the height of the preset highest water level of the washing barrel, and when dewatering and/or draining, the water in the washing barrel 2 is drained into the outer barrel 4 from the water outlet 20 under the action of the rotating centrifugal force of the washing barrel and then drained from a drainage structure 6 at the bottom of the outer barrel 4. In order to prevent water from being thrown out from the installation gap between the balance ring 3 and the washing tub 2, the balance ring 3 and the washing tub 2 are hermetically arranged, and various existing sealing installation structures can be adopted.

Further, as shown in fig. 6, a drainage channel 7 for guiding water from top to bottom is disposed on the outer peripheral wall of the washing tub 2, the upper portion of the drainage channel 7 is communicated with the water outlet 20, the lower end of the drainage channel drains into the outer tub 4, at least a portion of the outer tub 4 is disposed below the washing tub 2, and the upper edge of the peripheral wall of the outer tub 4 side extends upward and is higher than the position of the water outlet at the lower end of the drainage channel 7; preferably, the upper edge of the outer tub 4 is not higher than the upper opening of the washing tub 2; more preferably, the upper edge of the outer tub 4 is not higher than a half of the washing tub 2.

Example one

As shown in fig. 3 and 4, in the washing machine of the present embodiment, a communicating vessel 8 extending from bottom to top is provided on the outer peripheral wall of the washing tub 2, a water passage port 81 communicating with the communicating vessel 8 is provided at the lower portion of the washing tub 2, the space inside the washing tub 2 constitutes the first chamber 21, and the space inside the communicating vessel 8 constitutes the second chamber 22. The communicating vessel 8 is preferably tubular, and may be a cover body covering the outer peripheral wall of the washing tub 2 to be engaged with the outer peripheral wall of the washing tub 2, so as to form a second chamber 22 between the cover body and the outer peripheral wall of the washing tub.

The upper part of the communicating vessel 8 is provided with a vent 82 communicated with the outside atmosphere, the level of the vent 82 is higher than the preset highest water level of the washing tub 2, and the level of the water through hole 81 is not higher than the preset lowest water level of the washing tub 2.

Example two

The present embodiment is different from the first embodiment in that a communicating vessel (not shown) is provided on the inner peripheral wall of the washing tub, the communicating vessel extends from bottom to top, the inner space of the washing tub is divided into two chambers, the inner space of the communicating vessel forms a second chamber, the outer space of the communicating vessel forms a first chamber, and the lower portion of the communicating vessel is provided with a water passing port for communicating the two chambers.

EXAMPLE III

On the basis of the above embodiment, the air vent 82 at the upper part of the communicating vessel 8 forms a water outlet which is thrown outwards by the centrifugal force of the rotation of the washing tub.

The vent 82 is disposed at the top of the communicating vessel 8 and located below the outer tub cover 41, and when the communicating vessel 8 drains water, the water is directly thrown out of the vent 82 and is blocked by the outer tub cover 41 and falls into the outer tub 4 (see fig. 3 to 5).

Alternatively, the vent 82 is disposed on the side wall of the communicating vessel 8, and preferably, the side wall of the communicating vessel 8 is further provided with a drainage channel 7 for guiding water from top to bottom, the upper portion of the drainage channel 7 is communicated with the vent 82, and the lower end drains water into the outer tub 4 (see fig. 6).

Example four

The liquid level detecting device 5 of the present embodiment includes an ultrasonic liquid level measuring device 51, which is installed on a control panel seat of the washing machine or an outer tub cover 41 of the washing machine above the second chamber 22 (see fig. 3 and 5), or is installed on an outer tub bottom of the washing machine below the second chamber 22 (see fig. 4), or is installed on a driving unit installation component (not shown) below the outer tub bottom of the washing machine, or is installed on a housing below the second chamber (not shown).

Since the ultrasonic waves emitted from the ultrasonic level meter 51 are not blocked by the structure of the washing machine, such as the outer tub cover 41, the outer tub bottom wall, etc., the vent 82 of the communicating vessel 8 in this embodiment may be disposed on the side wall of the communicating vessel 8, besides the top of the communicating vessel 8.

The ultrasonic liquid level measuring device has power supply wires, is connected with a controller of the washing machine through a signal wire, and feeds back a liquid level height signal in the second chamber.

As shown in fig. 3, the ultrasonic level meter 51 is mounted on the upper surface of the outer tub cover 41 above the second chamber 22, and the transmitting end transmits an ultrasonic pulse to pass through air, so that the outer tub cover 41 is covered, or as shown in fig. 5, the ultrasonic level meter 51 is fixed on the lower surface of the outer tub cover 41, so that the transmitted ultrasonic pulse does not need to pass through the outer tub cover, or can be fixed on a control panel seat (not shown in the figure), passes through the outer tub cover, and directly enters the second chamber 22 through an opening 82 at the top of the communicating vessel 8, or passes through the top wall of the communicating vessel 8 to enter the second chamber 22, and then the ultrasonic pulse is reflected by the liquid level to return to the receiving end of the ultrasonic level meter 8 in an opposite path, and the ultrasonic level meter 8 measures the time required for the ultrasonic pulse to go and go, and calculates the distance.

Alternatively, as shown in fig. 4, the ultrasonic level meter 51 is installed at the bottom of the outer tub or at any position, the transmitting end transmits the ultrasonic pulse, and the ultrasonic pulse can effectively penetrate through the bottom wall of the outer tub, and if the ultrasonic level meter is fixed inside the outer tub, the ultrasonic pulse does not need to penetrate through the bottom wall of the outer tub, propagates to the liquid level in the liquid to be measured in the second chamber 22, is reflected by the liquid level, then penetrates through the liquid medium and the bottom wall of the outer tub, returns to the receiving end of the ultrasonic level meter 51, measures the time required for the ultrasonic pulse to reciprocate in the liquid, and calculates the distance between the liquid.

Of course, the measurement accuracy can be further improved or the influence of errors caused by different media can be eliminated by methods such as echo detection.

EXAMPLE five

As shown in fig. 5, the liquid level detection device 5 of the present embodiment includes a radar level gauge 52 or a laser level gauge 53, the top of the second chamber 22 is provided with an opening 82, i.e. a vent, and the liquid level detection device 5 is installed right above the opening 82 at the top of the second chamber 22; preferably, it is installed on the lower portion of the control panel seat of the washing machine or the lower surface of the outer tub cover 41 of the washing machine.

The laser liquid level measuring device 53 is provided with a power line for supplying power, and is connected with the controller through a signal line for feeding back a liquid level height signal.

The laser measuring liquid level device 53 emits laser at the emitting end, penetrates through air, is reflected to the receiving end of the laser measuring liquid level device 53 through the liquid level, measures the time required by the laser to go back and forth, and calculates the distance between the laser measuring liquid level and the liquid level according to the light speed of the medium, thereby determining the height of the liquid level.

The radar level gauge 52 transmits radar, penetrates through air, is reflected to the radar level gauge 52 through the liquid level, is received by the radar level gauge 52, measures the time required by the radar to go back and forth, and calculates the distance between the liquid levels according to the radio propagation speed of the medium, thereby determining the height of the liquid level.

EXAMPLE six

As shown in fig. 7, unlike the previous embodiment, the washing machine of this embodiment further includes a pulsator 9 installed inside the washing tub 2, the pulsator 9 is coaxial with the washing tub 2, a communicating vessel 8 extending from bottom to top is provided in the center of the pulsator 9 to divide the internal space of the washing tub 2 into two chambers, the internal space of the communicating vessel 8 forms a second chamber 22, the external space of the communicating vessel 8 forms a first chamber 21, and a water through hole 81 communicating the two chambers is provided at the lower part of the communicating vessel 8; preferably, the outer wall of the communicating vessel 8 forms a stirring structure of the pulsator.

Further, the top of the communicating vessel 8 is closed, the upper side wall is provided with a vent 82, the liquid level detection device 5 is an ultrasonic liquid level detector 51 and is mounted on the lower surface of the upper cover 10 of the washing machine;

preferably, the liquid level detection device 5 is located directly above the communicating vessel 8 when the upper lid 10 is closed.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A washing machine comprising: a housing;

a washing tub as a water tub rotatably provided in the washing machine housing;

the method is characterized in that: the washing tub is provided with a washing tub,

a first chamber for holding and washing fabric;

2. The washing machine as claimed in claim 1, wherein: the outer peripheral wall of the washing barrel is provided with a communicating vessel extending from bottom to top, the lower part of the washing barrel is provided with a water through hole communicated with the communicating vessel, the space inside the washing barrel forms a first chamber, and the space inside the communicating vessel forms a second chamber.

3. The washing machine as claimed in claim 1, wherein: the inner peripheral wall of the washing barrel is provided with a communicating vessel extending from bottom to top, the inner space of the washing barrel is divided into two chambers, the space inside the communicating vessel forms a second chamber, the space outside the communicating vessel forms a first chamber, and the lower part of the communicating vessel is provided with a water through hole communicating the two chambers.

4. A washing machine as claimed in claim 2 or 3, characterized in that: the upper part of the communicating vessel is provided with a vent communicated with the outside atmosphere, the level of the vent is higher than the height of the highest water level of the preset washing barrel, and the level of the water through hole is not higher than the height of the lowest water level of the preset washing barrel;

5. The washing machine as claimed in claim 4, wherein: the washing machine also comprises an outer barrel which is positioned outside the washing barrel, and when the washing machine is used for dewatering and/or draining, water in the communicating vessel is thrown into the outer barrel by the air vent under the action of centrifugal force generated by rotation of the washing barrel and is drained;

preferably, the vent is located below the outer barrel cover.

6. The washing machine as claimed in claim 4, wherein: a water drainage channel which guides water from top to bottom is respectively arranged on the peripheral wall of the washing barrel and the outer side of the communicating vessel, the upper part of the water drainage channel is communicated with the water outlet, the lower end of the water drainage channel drains into the outer barrel, at least one part of the outer barrel is arranged below the washing barrel, and the upper edge of the peripheral wall of the side of the outer barrel extends upwards and is higher than the position of the water outlet at the lower end of the water drainage channel;

7. The washing machine as claimed in claim 1, wherein: the liquid level detection device comprises an ultrasonic liquid level measuring device which is arranged on a washing machine control panel seat or a washing machine outer barrel cover above the second chamber, or is arranged on a washing machine outer barrel bottom below the second chamber, or is arranged on a driving unit mounting component below the washing machine outer barrel bottom, or is arranged on the shell.

8. The washing machine as claimed in claim 1, wherein: the liquid level detection device is a non-contact liquid level measurement device and comprises a radar liquid level measuring device or a laser liquid level measuring device, an opening is formed in the top of the second chamber, and the liquid level detection device is arranged right above the opening in the top of the second chamber;

9. The washing machine as claimed in claim 1, wherein: the washing machine also comprises a wave wheel arranged in the washing barrel, the wave wheel is coaxial with the washing barrel, a communicating vessel extending from bottom to top is arranged in the center of the wave wheel to divide the inner space of the washing barrel into two chambers, the space in the communicating vessel forms a second chamber, the space outside the communicating vessel forms a first chamber, and the lower part of the communicating vessel is provided with a water through hole for communicating the two chambers;

10. A washing machine as claimed in claim 9, wherein: the top of the communicating vessel is closed, the side wall of the upper part of the communicating vessel is provided with a vent, and the liquid level detection device is a non-contact liquid level measurement device and is arranged on the lower surface of the upper cover of the washing machine;