CN112030455B

CN112030455B - Washing machine

Info

Publication number: CN112030455B
Application number: CN202010884344.9A
Authority: CN
Inventors: 刘林滔; 杨洪永; 王立乾; 吴志亮; 熊传鑫; 窦诗雯
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2024-02-23
Anticipated expiration: 2040-08-28
Also published as: CN112030455A

Abstract

The invention discloses a washing device, which relates to the technical field of washing equipment, and comprises: the device comprises an outer cylinder, an inner cylinder, a rotating shaft and a spraying device, wherein a first cavity is formed in the outer cylinder; the inner cylinder is arranged in the first cavity, and a hollowed-out part is arranged at the bottom of the inner cylinder; the upper end of the rotating shaft is connected with the bottom of the inner cylinder, and the lower end of the rotating shaft extends out of the bottom of the outer cylinder and is connected with the driving device; the spraying device is arranged at the bottom of the outer cylinder and connected with the rotating shaft, and the spraying device can spray water into the inner cylinder through the hollowed-out part under the driving of the rotating shaft. The inner barrel of the bottomless impeller is used for washing, so that the entanglement of clothes during washing is reduced, and the deformation of the clothes is prevented; spraying clothes through a spraying device below the inner barrel, and refreshing and washing effects; because no other waterway is needed, the structure is simplified, and the production cost is reduced.

Description

Washing machine

Technical Field

The invention relates to the technical field of washing equipment, in particular to a washing machine.

Background

The traditional pulsator washing machine is a machine which combines a sleeve body part, a supporting part, a balancing part, a transmission part, a water inlet and drainage system and other auxiliary systems to cooperatively operate to realize the washing function, wherein the inner barrel and the outer barrel are respectively one. With the improvement of life quality, the demands of people on clothes washing are higher and higher, and from the prior mixed clothes washing to the current gradual classified washing, a washing machine is difficult to meet the clothes washing demands of many families.

Some clothes cannot be cleaned due to stubborn stains or other stains only by stirring with a pulsator, and other ways are needed to help the washing. Part of the pulsators are additionally provided with a circulating spraying mode in the washing machine for improving the washing effect, so that the cost is increased, the selling price is increased, and the economic burden of a user is further increased.

Patent number CN205171178U discloses a pulsator structure, and the last pulsator that is located the inner tube and the lower pulsator that is located between the inner tube of structural integration of pulsator have the aperture on the pulsator, and the rivers that lower pulsator brought up can be through the aperture on the pulsator to the inner tube when the pulsator was rotatory. However, the scheme is too ideal, the lower impeller is positioned between the inner cylinder and the outer cylinder, and the size of the lower impeller is smaller than the inner diameter of the outer cylinder, so that most of water flow between the inner cylinder and the outer cylinder is thrown on the wall of the outer cylinder by the lower impeller rather than passes through small holes on the impeller when the impeller rotates.

Disclosure of Invention

Therefore, the main purpose of the invention is to provide a washing machine, which solves the problems of poor spraying effect, complex structure and high production cost of the washing machine in the prior art.

In order to achieve the above object, the present invention provides a laundry device comprising:

the inner part of the outer cylinder is provided with a first cavity;

the inner cylinder is arranged in the first cavity, and a hollowed-out part is arranged at the bottom of the inner cylinder;

the upper end of the rotating shaft is in driving connection with the bottom of the inner cylinder, and the lower end of the rotating shaft extends out of the bottom of the outer cylinder and is in driving connection with the driving device;

the spraying device is arranged at the bottom of the outer cylinder and is used for spraying water into the inner cylinder through the hollowed-out part.

Further optionally, the spraying device comprises a water pump, a central shaft of the water pump is in driving connection with the rotating shaft, and a water outlet of the water pump faces to the bottom of the inner cylinder.

Further alternatively, the spraying device is an impeller, a second cavity is formed in the bottom of the outer cylinder, the impeller is arranged in the second cavity, the impeller is detachably connected with the rotating shaft, and when the impeller rotates, the impeller drives water in the second cavity to spray into the inner cylinder through the hollow part.

Further alternatively, the impeller is sleeved on the periphery of the rotating shaft and is connected with the rotating shaft through a key.

Further optionally, the laundry device further comprises:

the impeller cover is covered on the upper part of the second cavity, a central hole through which the rotating shaft can pass is formed in the middle of the impeller cover, and a plurality of through holes are formed in the periphery of the central hole at intervals.

Further alternatively, the inner diameter of the through holes near the center hole is larger than the inner diameter of the through holes far from the center hole, and the density of the through holes near the center hole is smaller than the density of the through holes far from the center hole.

Further optionally, the impeller cover is detachably connected to a side wall of the second cavity.

Further alternatively, a plurality of side impellers extending along the vertical direction are arranged on the inner wall of the inner barrel at intervals, and the side impellers are detachably connected with the inner wall of the inner barrel.

Further optionally, the laundry device further comprises:

go up the impeller, go up the impeller place in the inner tube, the bottom interval of going up the impeller is provided with a plurality of impeller blades along radial extension, the border interval of going up the impeller is provided with a plurality of draw-in grooves, a plurality of draw-in grooves with a plurality of side impeller one-to-one ground joint.

Further alternatively, a filter screen is arranged at the bottom of the inner cylinder, and the filter screen is located at the upper part of the hollowed-out part.

Correspondingly, the invention also provides a washing machine, which comprises: the shell, still including set up in the washing device of inside the shell, washing device is as above-mentioned washing device.

Further optionally, the washing machine further comprises:

the water inlet and outlet device comprises a water inlet valve, a water inlet pipe, a water outlet valve and a water outlet pipe, wherein the water inlet pipe is communicated with the water inlet of the outer cylinder, and the water inlet valve is arranged on the water inlet pipe; the drain pipe is communicated with a drain outlet arranged on the outer barrel, and the drain valve is arranged on the drain pipe.

The invention has the following advantages:

the washing machine provided by the invention has the advantages that the bottomless impeller inner cylinder is used for washing, so that the entanglement of clothes during washing is reduced, and the deformation of the clothes is prevented; spraying clothes through a spraying device below the inner barrel, and refreshing and washing effects; because no other waterway is needed, the structure is simplified, and the production cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present invention, should fall within the ambit of the technical disclosure.

Fig. 1 is a schematic side sectional structure of a laundry device according to an embodiment of the present invention;

FIG. 2 is a schematic top view of the outer cylinder and the inner cylinder according to the embodiment of the present invention;

fig. 3 is a schematic top view of an outer cylinder according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an impeller according to an embodiment of the present invention;

fig. 5 is a schematic top view of the outer cylinder after the impeller cover is mounted according to the embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of an inner cylinder, an impeller cover and a driving device according to an embodiment of the present invention;

FIG. 7 is a schematic view of an impeller cover according to one embodiment of the present invention;

FIG. 8 is a schematic view of another embodiment of an impeller cover;

FIG. 9 is a cross-sectional view of an inner barrel and an upper pulsator according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of an upper pulsator provided in an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a water inlet and outlet device according to an embodiment of the present invention;

fig. 12 is a schematic structural view of a washing machine according to an embodiment of the present invention.

In the figure: 1. an inner cylinder cover; 2. a top cover; 3. a housing; 4. an outer cylinder; 5. a wave wheel is arranged; 6. an inner cylinder; 7. a rotating shaft; 8. a driving device; 9. a drain valve; 10. an impeller; 11. an impeller cover; 12. a pull rod; 13. a side pulsator; 14. a water inlet; 15. a water outlet; 16. a filter screen; 17. a water inlet valve; 19. a groove; 20. a clamping groove; 21. impeller blades; 22. a handle; 23. the impeller cover is provided with a clamping groove.

Detailed Description

Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1, the washing apparatus of the present embodiment includes: the inner barrel 4, the inner barrel 6, the rotating shaft 7 and the spraying device are arranged in the outer barrel 4, a first cavity is formed in the inner barrel, and a water outlet 15 and a water inlet 14 which are communicated with the first cavity are formed in the bottom of the outer barrel 4. The inner cylinder 6 is arranged in the first cavity, the inner cylinder 6 corresponds to the first cavity one by one, a gap is arranged between the inner cylinder 6 and the inner wall of the cavity, and the gap can avoid collision between the inner cylinder 6 and the cavity wall in the rotating process. A plurality of water passing holes are formed in the side wall of the inner barrel 6 at intervals, the water passing holes are uniformly arranged, and water can flow into the cavity through the water passing holes and then is discharged through the water outlet 15 in the spin-drying process of the clothes by the inner barrel 6. The bottom of inner tube 6 is provided with the fretwork portion, and the fretwork portion is provided with the strengthening rib, and fretwork portion can make spray set spun rivers get into in the inner tube 6, and the area of fretwork portion needs to be slightly greater than spray set's spray area, ensures that as much as possible sprays rivers and gets into inside the inner tube 6.

As shown in fig. 2, preferably, in order to prevent clothes from being blocked in the hollowed-out part during the washing process, the bottom of the inner cylinder 6 is provided with a filter screen 16, the filter screen 16 is positioned at the upper part of the hollowed-out part, the filter screen 16 cannot pass through the filter screen 16 due to smaller pore diameters, so that the clothes are prevented from being blocked in the washing process, and meanwhile, the filter screen 16 cannot generate larger resistance to the water jet during the process of passing through the filter screen 16, so that the spraying efficiency of the spraying device is improved.

The rotating shaft 7 is used for connecting the driving device 8 and the inner cylinder 6, the upper end of the rotating shaft 7 is in driving connection with the bottom of the inner cylinder 6, the lower end of the rotating shaft 7 extends out of the bottom of the outer cylinder 4 and is in driving connection with the driving device 8, and the rotating shaft 7 corresponds to the driving device 8 and the inner cylinder 6 one by one. The spraying device is arranged at the bottom of the outer cylinder 4 and is in driving connection with the rotating shaft 7, and the spraying device can spray water into the inner cylinder 6 through the hollowed-out part under the driving of the rotating shaft 7. The bottomless impeller inner cylinder 6 is used for washing, so that the entanglement of clothes during washing is reduced, and the deformation of the clothes is prevented; the clothes are sprayed through the spraying device below the inner barrel 6, and the washing effect is improved.

It should be noted that the driving device 8 is a motor, and a central shaft of the motor and the rotating shaft 7 may be directly connected through a fixing member, or may be connected through a transmission assembly, and the transmission assembly may be a belt, a belt pulley or other devices with the same function.

In some embodiments, as shown in fig. 3 and 4, the spraying device includes an impeller 10, correspondingly, a second cavity is provided at the bottom of the outer cylinder 4, the impeller 10 is disposed in the second cavity, the impeller 10 drives water in the second cavity to move through rotation, water gathers near the inner wall of the second cavity in the process of rotation of the impeller 10, as the water volume increases, the pressure of the water increases, and finally the water is sprayed into the inner cylinder 6 through the hollowed-out part. The impeller 10 is detachably connected with the rotating shaft 7, specifically, the impeller 10 is sleeved on the periphery of the rotating shaft 7 and is in key connection with the rotating shaft 7, and the impeller 10 is conveniently detached and installed by key connection, and can be prevented from rotating relative to the rotating shaft 7 when the rotating shaft 7 rotates. The blades of the impeller 10 are vertical flat blades, and the number of the blades in this embodiment is eight, but the number of the blades is not limited to eight, and may be four, five, six, or the like. The impeller 10 allows the water to be sprayed into the inner cylinder 6, whether the drive means 8 is rotating in a forward or reverse direction.

Preferably, the width of the blade near one end of the rotating shaft 7 is larger than that of the blade far from one end of the rotating shaft 7, and when the impeller 10 rotates, more water can enter the second cavity, so that the spraying effect is improved.

Preferably, in the case that the bottom of the outer tub 4 is provided with the second cavity, the water inlet 14 and the water outlet 15 of the outer tub 4 may be provided at the bottom of the second cavity, and since the position of the second cavity is low, the water outlet 15 is provided at the bottom of the second cavity to facilitate draining all water inside the outer tub 4.

In order to improve the water spraying efficiency of the spraying device, the horizontal cross section of the second cavity is circular, and the diameter of the second cavity in the horizontal direction is slightly larger than the outer diameter of the impeller 10. When the driving device 8 drives the rotating shaft 7 to rotate, the impeller 10 also rotates along with the rotating shaft 7, water near the rotating shaft 7 moves downwards, the impeller 10 pushes the water to the vicinity of the side wall of the second cavity, the water near the side wall moves upwards due to accumulated pressure, and a spraying effect is formed after the water passes through the hollowed-out part. The side wall of the second cavity plays a role in guiding water flow, the smaller the gap between the side wall of the second cavity and the impeller 10 is, the higher the water spraying efficiency of the spraying device is, and meanwhile, the smaller the gap is, the higher the collision probability between the impeller 10 and the side wall of the second cavity is when the impeller 10 rotates, so that the optimal value of the gap can be determined by a person skilled in the art according to experimental results when the method is specifically implemented. The impeller 10 is arranged in the second cavity, so that the spraying efficiency of the spraying device is improved. Compared with the existing washing machine, the washing device of the invention has the advantages of simplifying the structure and reducing the production cost as no other waterways are additionally arranged.

The spraying device can be the impeller 10, a water pump and other devices with the same functions, and when the spraying device comprises the water pump, the central shaft of the water pump is in driving connection with the rotating shaft 7, and the water outlet of the water pump faces to the bottom of the inner cylinder 6.

In some embodiments, as shown in fig. 5 and 6, the laundry device further comprises: the impeller cover 11, the upper portion of the second cavity of the cover of impeller 11, the middle part of the impeller cover 11 is provided with the centre bore that can let the pivot 7 pass through, the periphery interval of centre bore is provided with a plurality of through-holes, the aperture of through-hole is between 3-8 mm. When the driving device 8 drives the rotating shaft 7 to rotate, the rotating shaft 7 drives the impeller 10 to rotate, water at the upper part flows into the second cavity through the through hole close to the center hole, the impeller 10 pushes water near the impeller 10 to the vicinity of the side wall of the second cavity, the water near the side wall of the second cavity moves upwards due to pressure accumulation, and when the water moves to the lower surface of the impeller cover 11, due to the blocking of the impeller cover 11, the pressure of the water further increases, only part of water can flow out through the through hole far from the center hole, and water flows out through the through hole far from the center hole, so that clothes can be sprayed better due to the increase of the pressure of the water flow, and the washing effect is further improved.

Further, the profile of the lower surface of the impeller cover 11 is matched with the profile of the upper portion of the impeller 10 to reduce the gap between the impeller cover 11 and the impeller 10, so that the pressure of water ejected through the impeller cover 11 is higher, and the washing effect is further improved.

Preferably, in order to further improve the washing effect, the through hole needs to be optimized, and as shown in fig. 7, the through hole near the center hole has a larger inner diameter than the through hole far from the center hole in the present embodiment, so that more water is sucked into the second cavity by the impeller 10. The inner diameter of the through hole far away from the center hole is small, so that the pressure of water passing through the through hole far away from the center hole is increased, and a better spraying effect is formed. The density of the through holes close to the central hole is smaller than that of the through holes far away from the central hole, and the purpose of the large density of the through holes far away from the central hole is to form more water jet streams, so that the washing effect is further improved.

It should be noted that, the through hole may be not only a circular hole, but also a bar hole, as shown in fig. 8, the width of the bar hole near the rotating shaft 7 is larger than the width of the bar hole far away from the rotating shaft 7, wherein the bar hole near the rotating shaft 7 is used for water inlet, and the bar hole far away from the rotating shaft 7 is used for water outlet. Of course, the inner diameters of all the through holes can be set to be the same, and the density of the through holes close to the central hole is larger than that of the through holes far away from the central hole, so that the aim of increasing the pressure of the water jet can be achieved in the two modes, and the washing effect can be improved.

Preferably, the impeller cover 11 is detachably coupled to a sidewall of the second cavity for the convenience of mounting and dismounting the impeller cover 11. Specifically, a plurality of buckles are arranged at intervals on the edge of the impeller cover 11, a plurality of impeller cover clamping grooves 23 are arranged on the side wall of the second cavity at intervals, and the buckles are correspondingly clamped in the impeller cover clamping grooves 23 one by one. The impeller cover 11 is detached without using a tool, and only the buckle is separated from the impeller cover clamping groove 23.

In some embodiments, a plurality of side pulsators 13 extending in the vertical direction are arranged on the inner wall of the inner cylinder 6 at intervals, and the side pulsators 13 are detachably connected with the inner wall of the inner cylinder 6. When the inner cylinder 6 rotates, the side pulsator 13 rotates together with the inner cylinder 6, agitates the water flow to rotate, and washes clothes.

Preferably, the side impeller 13 is provided with the arch that extends along vertical direction near one side of inner tube 6 lateral wall, and the interval is provided with a plurality of recesses 19 on the lateral wall of inner tube 6, and protruding card is located in the recess 19, and during the use, can increase and decrease the quantity of side impeller 13 as required improves the washing effect. The cross section of the side impeller 13 on the horizontal plane is trapezoidal, and the edges and corners of the side impeller 13 are rounded to avoid damage to clothes.

In some embodiments, as shown in fig. 9 and 10, the laundry device further includes: go up impeller 5, go up impeller 5 and be the disc, go up impeller 5 and place in inner tube 6, go up impeller 5's bottom interval and be provided with a plurality of impeller blades 21 along radial extension, the contained angle between two adjacent impeller blades 21 equals, and the fillet treatment has been carried out to the edges and corners of impeller blade 21, avoids causing the damage to the clothing. A plurality of clamping grooves 20 are formed in the edge of the upper pulsator 5 at intervals, the shape of each clamping groove 20 is matched with the shape of the cross section of the side pulsator 13 in the horizontal direction, and the clamping grooves 20 are clamped with the side pulsators 13 in a one-to-one correspondence mode. In order to facilitate the taking out and putting in of the upper pulsator 5, a handle 22 is arranged at the top of the upper pulsator 5, and the upper pulsator 5 is taken out through the handle 22 after the use is finished. When the driving device 8 drives the inner cylinder 6 to rotate, the inner cylinder 6 drives the side pulsator 13 to rotate, the side wall wheel drives the upper pulsator 5 to rotate simultaneously, water flow is stirred to rotate under the combined action of the upper pulsator 5 and the side pulsator 13, and clothes are washed.

As shown in fig. 11, the present invention also provides a washing machine including: the washing device comprises a shell 3 and a washing device, wherein the washing device is the washing device in the embodiment, the shell 3 provides a mounting foundation for the washing device, a top cover 2 is arranged at the top of the shell 3, the top cover 2 is hinged with the shell 3, an outer cylinder 4 is arranged in the shell 3, an inner cylinder cover 1 is arranged at the top of the outer cylinder 4, and the inner cylinder cover 1 is hinged with the top of the outer cylinder 4 and covers the top of an inner cylinder 6.

In some embodiments, as shown in fig. 12, the washing machine further includes: the water inlet and outlet device comprises a water inlet valve 17, a water inlet pipe, a water outlet valve 9 and a water outlet pipe, wherein the water inlet pipe is communicated with the water inlet 14 of the outer barrel 4, the water inlet valve 17 is arranged on the water inlet pipe, when the outer barrel 4 is provided with a plurality of first cavities, the water inlet valve is provided with a plurality of water inlets 14, and one water inlet valve 17 can control the connection and the disconnection of the plurality of water inlet pipes. The water inlet valve 17 is used for controlling the on and off of the water inlet pipe, in this embodiment, the water inlet valve 17 is an electromagnetic valve, and the electromagnetic valve is controlled by the controller, so that automatic water inlet can be realized. The drain pipe is communicated with the drain outlet 15 of the outer barrel 4, the number of the drain pipes is the same as that of the drain outlets 15, the drain valve 9 is arranged on the drain pipe, the drain valve 9 is used for controlling the conduction and closing of the drain pipe, the drain valve 9 is a traction valve in the embodiment, and the drain valve 9 is connected with a drain key arranged on the shell 3 through a pull rod 12.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or described herein.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A laundry appliance, the laundry appliance comprising:

the outer barrel is internally provided with a first cavity, and the bottom of the outer barrel is provided with a second cavity; the bottom of the second cavity is provided with a water inlet and a water outlet;

the spraying device is arranged at the bottom of the first cavity and comprises an impeller, and the impeller is arranged in the second cavity and is in driving connection with the rotating shaft;

the impeller cover is covered on the upper part of the second cavity, a central hole through which the rotating shaft can pass is formed in the middle of the impeller cover, and a plurality of through holes are formed in the periphery of the central hole at intervals;

the rotating shaft drives the impeller to rotate, so that water in the outer cylinder flows into the second cavity through the through hole close to the central hole, and the impeller pushes water near the impeller to near the side wall of the second cavity; the water near the side wall of the second cavity moves upwards to the lower surface of the impeller cover, is blocked by the impeller cover, and part of water flows out through the through hole far away from the center hole and is sprayed into the inner barrel through the hollowed-out part to spray and wash clothes.

2. The laundry appliance of claim 1, wherein the impeller is removably connected to the shaft.

3. The washing device as claimed in claim 2, wherein the impeller is sleeved on the outer circumference of the rotating shaft and is connected with the rotating shaft through a key.

4. The laundry appliance of claim 1, wherein the inner diameter of the through holes near the central hole is greater than the inner diameter of the through holes far from the central hole, and the density of the through holes near the central hole is less than the density of the through holes far from the central hole.

5. The laundry appliance of claim 4, wherein the impeller cover is removably connected to a side wall of the second cavity.

6. A laundry appliance according to claim 1, 2 or 3, wherein a plurality of side pulsators extending in a vertical direction are provided on the inner wall of the inner tub at intervals, the side pulsators being detachably connected to the inner wall of the inner tub.

7. The laundry appliance of claim 6, further comprising:

8. A laundry appliance according to claim 1, 2 or 3, wherein the bottom of the inner tub is provided with a sieve, the sieve being located at the upper part of the hollowed-out portion.

9. A washing machine, the washing machine comprising: a housing, further comprising a laundry device disposed within the housing, the laundry device being a laundry device according to any one of claims 1-8.

10. The washing machine as claimed in claim 9, further comprising: