CN110219126B

CN110219126B - Wave wheel assembly

Info

Publication number: CN110219126B
Application number: CN201810175837.8A
Authority: CN
Inventors: 赵志强; 许升; 吴玲; 吕佩师
Original assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2018-03-02
Filing date: 2018-03-02
Publication date: 2023-04-14
Anticipated expiration: 2038-03-02
Also published as: CN110219126A

Abstract

The invention relates to the technical field of clothes treatment, in particular to a pulsator assembly. The invention aims to solve the problems of poor spraying effect and complex structure of the impeller of the existing washing machine. To this end, the pulsator assembly of the present invention comprises: the inner barrel bottom comprises a base and a flange plate connected with the base, and a flange hole is formed in the center of the upper surface of the flange plate; the impeller, the impeller includes the rim plate, and the central authorities downwardly extending of the lower surface of rim plate has the shaft hole, and the shaft hole sets to allow drive arrangement's output shaft to pass the flange hole and be connected with the shaft hole, and a plurality of first apopores have been seted up to the central authorities of rim plate, and the outer wall in shaft hole still is provided with the water lift structure, and the washing water that the water lift structure set to be when the rim plate rotates rim plate below rises along the axial in shaft hole and erupts from first apopore. The washing water can be sprayed out from the first water outlet hole along the axial direction of the shaft hole through the water lifting structure, and the spraying effect can be greatly enhanced on the basis of simplifying the structure.

Description

Wave wheel assembly

Technical Field

The invention relates to the technical field of clothes treatment, in particular to a pulsator assembly.

Background

The washing machine is a clean electrical appliance for washing clothes by using electric energy, and becomes an essential household electrical appliance in daily life with the acceleration of life rhythm and high requirements of people on living comfort. Taking the pulsator washing machine as an example, the pulsator washing machine washes the clothes by means of friction between the motor and the clothes in the forward and reverse rotation process of the pulsator driven by the motor, however, the problems of single water flow, low cleanliness, serious clothes winding and the like exist in the actual washing process of the washing mode, and the use experience of users is greatly influenced.

In order to solve the above problems of the pulsator washing machine, the invention patent application with publication number CN1201089A discloses a pulsator for washing machines. Specifically, the pulsator of a washing machine includes a body rotatably mounted on a bottom of a washing tub with respect to a vertical axis, the body having an impeller chamber and an upper surface formed with at least one water spouting outlet opening upwardly opened and in flow communication with the impeller chamber; a water jet impeller having an impeller shaft whose axis is parallel to a vertical axis of the main body and a plurality of blades extending radially from the impeller shaft, the water jet impeller being installed in the impeller chamber to rotate with respect to the main body, thereby generating an upward flow of washing water through the water jet outlet; a support member rotatably supporting the impeller shaft in a radial direction as well as in an axial direction; and a member for rotating the water jet impeller. The impeller of the washing machine achieves the purpose of preventing clothes from being wound mainly in a mode that the rotation of the water spraying impeller drives water flow to be sprayed upwards from the water spraying outlet when the impeller rotates. Although the above-described technical means solves the problems of a single water flow and low cleaning efficiency to some extent, the following problems are unavoidable. Firstly, because the fan blades of the water spraying impeller are distributed along the radial direction of the impeller shaft, most washing water is thrown out along the radial direction of the impeller shaft in the rotating process of the water spraying impeller instead of directly forming upward water flow to be sprayed out from the water spraying outlet, so that the upward force of the water flow is greatly weakened; and most of the washing water thrown out along the radial direction hits the side wall of the impeller chamber to do useless work, and the washing efficiency is obviously reduced. Secondly, the pulsator has a problem of complicated structure because it includes a support member for supporting the impeller shaft and a member for rotating the water jet impeller, in addition to necessary members for generating the upward water current.

Accordingly, there is a need in the art for a new pulsator assembly to solve the above problems.

Disclosure of Invention

In order to solve the above problems in the prior art, that is, to solve the problems of poor spraying effect and complex structure of the pulsator of the existing washing machine, the present invention provides a pulsator assembly, comprising: the inner barrel comprises a base and a flange plate connected with the base, and a flange hole is formed in the center of the upper surface of the flange plate; the impeller, the impeller includes the rim plate, the central authorities downwardly extending of the lower surface of rim plate has the shaft hole, the shaft hole sets to allow drive arrangement's output shaft to pass the flange hole with the shaft hole is connected, a plurality of first apopores have been seted up to the central authorities of rim plate, the outer wall in shaft hole still is provided with water lifting structure, water lifting structure sets to work as when the rim plate rotates the washing water edge of rim plate below the axial in shaft hole rises and follows first apopore jets.

In a preferred technical solution of the above-mentioned wave wheel assembly, a protruding portion is further provided at the center of the wheel disc, a cavity is formed in the protruding portion, and the plurality of first water outlet holes are provided in the protruding portion.

In a preferred technical scheme of the above-mentioned wave wheel assembly, the water lifting structure is a spiral rib wound around the outer wall of the shaft hole along the axial direction of the shaft hole.

In a preferred technical solution of the above-mentioned wave wheel assembly, an annular first reinforcing rib is provided on a lower surface of the wheel disc, and a part of the spiral rib is connected to an inner wall of the first reinforcing rib.

In the above-described preferred embodiment of the wave wheel assembly, the boss, the shaft hole, the spiral rib, and the first reinforcing rib are integrally formed.

In the preferable technical scheme of the above-mentioned wave wheel assembly, the upper surface of the flange plate extends upwards to form an annular water guide cylinder, and the part of the flange plate located in the water guide cylinder is further provided with a plurality of water inlet holes.

In the preferable technical scheme of the above-mentioned wave wheel assembly, an annular protruding structure is formed on the inner wall of the base, at least one notch is formed on the protruding structure, and the at least one notch, the protruding structure and the base are surrounded to form an upwelling channel.

In the preferable technical scheme of the above-mentioned wave wheel assembly, the lower surface of the wheel disc is provided with a plurality of water-stirring ribs, each water-stirring rib is arranged along the radial direction of the wheel disc, and the water-stirring ribs are located in an annular space formed by the surrounding of the protruding structure.

In a preferred technical scheme of the above-mentioned wave wheel assembly, the lower surface of the wheel disc is further provided with a plurality of annular second reinforcing ribs, and the water-stirring rib extends from the innermost second reinforcing rib to the outer edge of the wheel disc.

In a preferred embodiment of the above-mentioned wave wheel assembly, the upper surface of the wheel disc is provided with a plurality of water-stirring vanes, and each water-stirring vane extends from the upper surface of the boss to the outer edge of the upper surface of the wheel disc along the radial direction of the wheel disc; and/or the cross section of the convex part is gradually reduced from bottom to top.

The impeller assembly comprises an inner barrel bottom and an impeller, the inner barrel bottom comprises a base and a flange connected with the base, and the center of the upper surface of the flange is provided with a flange hole; the impeller includes the rim plate, and the central authorities downwardly extending of the lower surface of rim plate has the shaft hole, and the shaft hole sets to allow drive arrangement's output shaft to pass the flange hole and be connected with the shaft hole, and a plurality of first apopores have been seted up to the central authorities of rim plate, and the outer wall in shaft hole still is provided with the water lift structure, and the washing water that the water lift structure set to when the rim plate rotates rim plate below rises along the axial in shaft hole and jets from first apopore. The wheel disc is characterized in that a protruding portion is further arranged in the center of the wheel disc, a cavity is formed in the protruding portion, and the first water outlet holes are formed in the protruding portion. Wherein, the water lifting structure is around the spiral muscle of locating the shaft hole outer wall along the axial in shaft hole, and the lower surface of rim plate is provided with annular first strengthening rib, and the inner wall connection of a part and the first strengthening rib of spiral muscle.

The water lifting structure is skillfully arranged on the basis of the original structure of the impeller, so that the impeller assembly can greatly enhance the spraying effect on the basis of simplifying the structure. Specifically, through the arrangement mode, the Archimedes spiral pipe can be ingeniously formed in a chamber formed by the spiral ribs which are arranged on the outer wall of the shaft hole in the axial direction, the annular first reinforcing ribs arranged on the lower surface of the wheel disc and the protruding portions, so that when the impeller rotates for one circle, the spiral ribs in the chamber rotate for one circle, washing water below the wheel disc is sucked into the Archimedes spiral pipe by the spiral ribs, the washing water in the spiral pipe is upwards pushed into the chamber by the spiral ribs to form one or more screw pitches, the washing water in the chamber is quickly pressurized and flows upwards along the axial direction of the shaft hole along with the high-speed rotation of the spiral ribs, finally, a strong high-pressure jet water flow is formed by penetrating through the first water outlet hole to jet upwards, the strong water flow supports and suspends the clothes, and brushes the clothes, the abrasion degree of the impeller on the clothes is reduced, the winding of the clothes is effectively avoided, the washing degree of the clothes is improved, and the user experience is greatly improved. In addition, the invention also greatly simplifies the structure of the impeller component under the condition of forming good spraying effect. In other words, the invention solves the problems of poor spraying effect and complex structure of the impeller of the existing washing machine, effectively improves the spraying effect and the washing efficiency, reduces the cost of the impeller assembly and is suitable for large-scale popularization.

Drawings

The pulsator assembly of the present invention will be described with reference to the accompanying drawings in conjunction with a pulsator washing machine. In the drawings:

FIG. 1 is a schematic structural diagram (I) of a pulsator assembly according to the present invention;

FIG. 2 is a schematic structural diagram of a pulsator assembly according to the present invention;

FIG. 3 is a top view of a pulsator in the pulsator assembly according to the present invention;

FIG. 4 isbase:Sub>A cross-sectional view taken at A-A of FIG. 3;

fig. 5 is a schematic structural view of the pulsator washing machine of the present invention.

List of reference numerals

1. An inner barrel bottom; 11. a base; 111. a raised structure; 112. a notch; 12. a flange plate; 121. a flange hole; 122. a water guide cylinder; 123. a water inlet hole; 2. an impeller; 21. a wheel disc; 22. a boss portion; 221. a first water outlet hole; 23. a shaft hole; 24. a water lifting structure; 251. a first reinforcing rib; 252. a second reinforcing rib; 26. water-repellent ribs; 27. water-repellent leaves; 28. rubbing ribs; 29. a second water outlet; 3. a housing; 41. an outer tub; 42. an inner barrel; 421. an inner barrel ring; 5. a drive device.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the drawings show the first ten outlet holes in the upper surface of the raised portion, the numerical relationship is not constant and can be adjusted as desired by those skilled in the art to suit a particular application. For example, a person skilled in the art may also set the number of the first water outlet holes to five, six, or more, so that the number of the first water outlet holes can enable the impeller to generate a good spraying effect.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

First, referring to fig. 1 to 4, the pulsator assembly of the present invention will be explained. Wherein, fig. 1 is a structural schematic diagram (one) of the pulsator assembly of the present invention; FIG. 2 is a schematic structural view (II) of the pulsator assembly according to the present invention; FIG. 3 is a top view of a pulsator assembly of the present invention; fig. 4 isbase:Sub>A cross-sectional view atbase:Sub>A-base:Sub>A of fig. 3.

As shown in fig. 1 and 2, in order to solve the problems of poor spraying effect and complex structure of the impeller of the existing washing machine, the impeller assembly of the present invention mainly includes an inner tub bottom 1 and an impeller 2, the inner tub bottom 1 includes a base 11 and a flange 12 connected to the base 11, a flange hole 121 is formed in the center of the upper surface of the flange 12 (i.e., in front of the flange 12 shown in fig. 1), an annular protrusion structure 111 is formed on the inner wall of the base 11, at least one notch 112 is formed on the protrusion structure 111, and an upwelling water channel is formed by enclosing at least one notch 112, the protrusion structure 111 and the base 11. The pulsator 2 includes a disc 21, a plurality of water-extracting blades 27 are provided on an upper surface of the disc 21 (i.e., a front surface of the disc 21 shown in fig. 1), a plurality of friction ribs 28 and a plurality of second water outlet holes 29 are provided between every two water-extracting blades 27, and a plurality of second reinforcing ribs 252 and a plurality of water-extracting ribs 26 are provided on a lower surface of the disc 21. Referring to fig. 3 and 4, a boss 22 is centrally provided on an upper surface of the wheel disc 21, the boss 22 forms a cavity, and a shaft hole 23 extends downward from a lower surface of the boss 22, and the shaft hole 23 is provided to allow an output shaft of a driving device (e.g., a driving motor) to pass through the flange hole 121 and be connected to the shaft hole 23. A plurality of first apopores 221 have been seted up to the upper surface of bellying 22, and the outer wall of shaft hole 23 still is provided with water lifting structure 24, and water lifting structure 24 sets to the washing water that rim plate 21 below when the rim plate rotates and rises along the axial of shaft hole 23 and follow first apopore 221 and erupt.

Through the water lifting structure 24, the washing water below the wheel disc 21 can be lifted along the axial direction of the shaft hole 23 and sprayed out from the first water outlet hole 221, and the impeller assembly of the present invention can enable the washing water to flow upwards along the axial direction of the shaft hole 23 instead of flowing along the radial direction of the shaft hole 23, thereby greatly enhancing the spraying effect and simplifying the structure of the impeller assembly. In other words, the invention solves the problems of poor spraying effect and complex structure of the impeller 2 of the existing washing machine, effectively improves the spraying effect and the washing efficiency, reduces the cost of the impeller assembly, and is suitable for large-scale popularization.

With further reference to fig. 1 and fig. 2, the flange 12 is connected to the central concave hole of the base 11, a flange hole 121 is formed in the center of the flange 12, an annular protruding structure 111 is formed on the inner wall of the base 11, two notches 112 are symmetrically formed in the protruding structure 111, a water guide plate is arranged in each notch 112, and two upwelling water channels are formed by the two notches 112, the protruding structure 111 and the base 11. Preferably, two water inlet channels may be provided corresponding to one thread-thrum filter (if two are provided in the washing tub). The disk 21 is bowl-shaped, and the bulge 22 is formed by bulging the bowl bottom of the bowl-shaped disk 21 upward (i.e., forward of the pulsator 2 shown in fig. 1). The upper surface of the wheel disc 21 is provided with four water-repellent blades 27, and each water-repellent blade 27 extends from the upper surface of the boss 22 to the outer edge of the upper surface of the wheel disc 21 in the radial direction of the wheel disc 21. Five friction ribs 28 are arranged between every two water-stirring blades 27, each friction rib 28 is arranged along the radial direction of the wheel disc 21, and a plurality of second water outlet holes 29 are arranged between every two friction ribs 28 and between the adjacent friction ribs 28 and the water-stirring blades 27. Two annular second reinforcing ribs 252 and a plurality of water-repellent ribs 26 are arranged on the lower surface of the wheel disc 21, each water-repellent rib 26 extends from the innermost second reinforcing rib 252 to the outer edge of the wheel disc 21 along the radial direction of the wheel disc 21, and in the assembled state, the water-repellent ribs 26 are just positioned in an annular space surrounded by the protruding structures 111.

Referring to fig. 3 and 4, in one possible embodiment, the boss 22 is formed convexly from the center of the wheel disc 21 from bottom to top (in the orientation shown in fig. 4), and the area of the cross section of the boss 22 gradually decreases in the direction in which the boss 22 is formed (i.e., from bottom to top in fig. 4). The protruding portion 22 is provided with ten first apopores 221, and the lower surface center downwardly extending of protruding portion 22 is provided with shaft hole 23, and the water lift structure 24 is around the spiral muscle of locating shaft hole 23 outer wall along the axial of shaft hole 23. The lower surface of the wheel disc 21 is provided with an annular first reinforcing rib 251, the upper half part of the spiral rib is positioned in the cavity, the lower half part of the spiral rib is connected with the inner wall of the first reinforcing rib 251, and then the cavity formed by the spiral rib, the first reinforcing rib 251 and the convex part 22 jointly forms the Archimedes spiral pipe. Preferably, the boss 22, the shaft hole 23, the spiral rib, and the first reinforcing rib 251 are integrally formed (e.g., the pulsator 2 is integrally formed). Of course, the boss 22, the shaft hole 23, the spiral rib, and the first reinforcing rib 251 may be separately formed or partially integrally formed and then attached to the wheel disc 21. Referring to fig. 1, 2 and 4, further, the upper surface of the flange 12 further extends upward to form an annular water guide tube 122, the portion of the flange 12 located in the water guide tube 122 is further provided with four water inlet holes 123, two large water inlet holes and two small water inlet holes, and the inner wall of the water guide tube 122 is tightly abutted to the outer wall of the first reinforcing rib 251.

According to the direction shown in fig. 4, when the impeller component works, the driving device drives the wheel disc 21 of the impeller 2 to rotate, in the rotating process, the water stirring blade 27 drives the washing water above the wheel disc 21 to generate vortex, the friction rib 28 rubs and washes clothes, the water stirring rib 26 drives a part of the washing water below the wheel disc 21 to be upwards sprayed out through the upwelling water channel, the water flow passes through the thread scrap filter and then is sprayed downwards, and the other part of the washing water is sprayed out to the upper part of the wheel disc 21 through the second water outlet holes 29, so that the friction degree between the clothes and the water stirring blade 27 and the friction rib 28 is reduced. Meanwhile, the washing water enters the water guide cylinder 122 through the water inlet 123, the spiral rib inside the chamber also rotates for a circle when the impeller 2 rotates for a circle, the washing water in the water guide cylinder 122 is sucked into the Archimedes spiral pipe under the driving of the spiral rib, the washing water in the spiral pipe is upwards pushed into one or more screw pitches by the spiral rib, along with the high-speed rotation of the spiral rib, the washing water in the chamber is rapidly pressurized and upwards flows along the axial direction of the shaft hole 23, and finally passes through the first water outlet 221 to form strong high-pressure jet water flow to be upwards jetted, and the strong water flow holds up the clothes and keeps the clothes suspended, and simultaneously sprays and brushes the clothes.

From the above description, it can be seen that the chamber formed by the spiral rib, the first reinforcing rib 251 and the protruding portion 22 is innovatively formed into the archimedes spiral tube, when the pulsator 2 operates, a strong water jet can be formed to lift up the clothes and brush the clothes, and the ingenious arrangement mode not only enhances the water jet effect, reduces the wear degree of the pulsator 2 to the clothes, but also effectively avoids the winding among the clothes, and improves the washing degree of the clothes. The arrangement of the water guide cylinder 122 further enhances the water inlet sealing performance of the Archimedes spiral pipe, so that the spraying effect is further enhanced. The setting of upwelling water course for the washing water of gushing the spun water of water course can strengthen the thread scraps filter effect and spray the effect in the washing process, and then reinforcing washing effect. The area enclosed by the cross section of the convex part 22 is gradually reduced (namely, the upper part is small and the lower part is large) along the forming direction of the convex part 22, so that the cavity is gradually narrowed and the pressure is gradually increased in the process that the washing water is upwards pushed by the spiral rib, and the pressure and the spraying effect of the water jet are ensured. In addition, under the condition of forming good spraying effect and washing effect, the invention also omits a supporting component for supporting the impeller shaft and parts for rotating the water spraying impeller and the like in the prior art, greatly simplifies the structure of the impeller assembly, reduces the production cost of the impeller assembly and improves the competitiveness of the product.

It should be noted that the above-mentioned embodiments are only used for illustrating the principle of the present invention, and are not intended to limit the protection scope of the present invention, and those skilled in the art can make any form of modification to the structure of the present invention so that the present invention can be applied to more specific application scenarios without departing from the principle of the present invention. For example, the center of the wheel disc may not be provided with the boss 22, but an archimedean spiral pipe may be formed by the spiral rib, the lower surface of the wheel disc 21, and the first bead 251; for another example, the structure of the water lifting structure 24 may be in other forms as long as the structure can generate a structure similar to an archimedes spiral tube or a working chamber, such as a propeller blade arranged on the outer wall of the shaft hole, the propeller blade being connected with the first rib 251 and the boss 22 respectively to form a spraying channel; for another example, the wheel disc 21 may be shaped as a disc or other form; for another example, parameters (such as a set length, a thread pitch, and the like) of the spiral rib can be correspondingly adjusted according to a specific application scene, so that a good water flow lifting effect can be obtained; for another example, when the spiral rib does not extend to the outer edge of the lower end of the first rib 251, the outer wall of the water guiding cylinder 122 may be disposed to be closely abutted against the inner wall of the first rib 251; for another example, the number of the notch 112, the water inlet 123, the water-stirring blade 27, the friction rib 28, the first water outlet 221, the second water outlet 29, the water-stirring rib 26, and the second reinforcing rib 252 of the protrusion structure 111 is not limited, as long as the number can be favorable for improving the washing effect and the spraying effect.

The pulsator washing machine according to the present invention will be briefly described with reference to fig. 5. Wherein, fig. 5 is a schematic structural diagram of the pulsator washing machine of the present invention.

As shown in fig. 5, the present invention further provides a pulsator washing machine, which includes a casing 3, a washing tub and a driving device 5 are disposed in the casing 3, the washing tub includes an inner tub 42 and an outer tub 41, the inner tub 42 further includes an inner tub ring 421 and the pulsator assembly, an inner tub bottom 1 and a driving device 5 (such as a driving motor) are sequentially disposed below the pulsator 2, the inner tub bottom 1 is connected to the inner tub 42 in a matching manner, and an output shaft of the driving device 5 passes through a flange hole 121 on the inner tub bottom 1 and is connected to a shaft hole 23 of the pulsator 2 to realize operation.

Finally, it should be noted that although the above preferred embodiment is described by taking a pulsator washing machine as an example, this is not intended to limit the protection scope of the present invention, and it will be appreciated by those skilled in the art that the present invention can also be applied to other clothes treatment apparatuses with a pulsator assembly, such as a shoe washing machine with a pulsator assembly or a drum pulsator two-in-one washing machine, etc., besides the pulsator washing machine.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims

1. A pulsator assembly, comprising:

the inner barrel bottom comprises a base and a flange plate connected with the base, and a flange hole is formed in the center of the upper surface of the flange plate;

the impeller comprises a wheel disc, a shaft hole extends downwards from the center of the lower surface of the wheel disc, the shaft hole is arranged to allow an output shaft of a driving device to penetrate through the flange hole to be connected with the shaft hole,

the center of the wheel disc is provided with a plurality of first water outlet holes, the outer wall of the shaft hole is also provided with a water lifting structure, and the water lifting structure is arranged in a way that when the wheel disc rotates, washing water below the wheel disc rises along the axial direction of the shaft hole and is jetted out of the first water outlet holes;

the center of the wheel disc is also provided with a bulge, a cavity is formed in the bulge, and the plurality of first water outlet holes are formed in the bulge;

the water lifting structure is a spiral rib which is wound on the outer wall of the shaft hole along the axial direction of the shaft hole.

2. The pulsator assembly according to claim 1, wherein a lower surface of the disc is provided with a first reinforcing rib having a ring shape, and a portion of the spiral rib is connected to an inner wall of the first reinforcing rib.

3. The impeller assembly of claim 2, wherein the boss, the shaft hole, the spiral rib, and the first reinforcing rib are integrally formed.

4. The pulsator assembly as claimed in claim 1, wherein an annular water guide tube extends upward from an upper surface of the flange, and a plurality of water inlet holes are formed in a portion of the flange located in the water guide tube.

5. The pulsator assembly as claimed in any one of claims 1 to 4, wherein the inner wall of the base is formed with an annular protrusion, the protrusion is formed with at least one notch, and the at least one notch, the protrusion and the base enclose a water upwelling channel.

6. The impeller assembly of claim 5, wherein the lower surface of the wheel disc is provided with a plurality of water-repellent ribs, each water-repellent rib is arranged along a radial direction of the wheel disc, and the water-repellent ribs are located in an annular space surrounded by the raised structures.

7. The pulsator assembly as claimed in claim 6, wherein the lower surface of the disc is further provided with a plurality of second reinforcing ribs in a ring shape, and the water-repellent ribs extend from the innermost second reinforcing rib to the outer edge of the disc.

8. The pulsator assembly of claim 7, wherein the upper surface of the disc is provided with a plurality of water-repellent blades, each of the water-repellent blades extending from the upper surface of the boss to an outer edge of the upper surface of the disc in a radial direction of the disc; and/or the cross section of the convex part is gradually reduced from bottom to top.