A pulsator assembly and a washing machine

Abstract

The application discloses a pulsator assembly and a washing machine, the pulsator assembly comprises: a pulsator disc; a thread scrap filter arranged at the center position of the pulsator disc; the thread scrap filter has a shell, the shell is provided with a water inlet hole on the side facing away from the pulsator disc and a water outlet hole on the side facing the pulsator disc, so as to form a filtering channel through which water flows from top to bottom. The pulsator assembly provided by the application can collect thread scrap to the thread scrap filter to a greater extent and greatly improve the collection efficiency of thread scrap by installing the thread scrap filter at the center position of the pulsator disc and forming a filtering channel through which water flows from top to bottom.

Description

Technical Field

[0001] This invention belongs to the field of household appliance technology, specifically, it relates to a pulsator assembly and a washing machine. Background Technology

[0002] Most lint filters in existing pulsator washing machines are located on the inner wall of the inner drum. This not only occupies part of the inner drum's volume, but also makes it easy for clothes to be scratched or for the filter to be torn off by the clothes.

[0003] Chinese patent application number 201920543701.8 discloses a lint filter, an impeller assembly, and a washing machine. The lint filter is installed inside the impeller and includes a filter screen. The filter body has a filter groove, and the filter groove has a filter outlet. The filter outlet connects to the outside of the impeller, and the filter screen covers the filter outlet. The washing machine's impeller includes an impeller disc and a rotating base. The filter body and the rotating base are both located inside the impeller disc, and the rotating base covers the filter groove. The inside of the impeller disc, the rotating base, the filter groove, the filter outlet, and the outside of the impeller disc are sequentially connected to form a drainage channel. While this patent installs the lint filter inside the impeller to prevent clothes from being scratched or the filter from being torn off, the water flow in this patent enters the lint filter from the bottom of the impeller, filters out lint and other debris, and then discharges the water from the drainage channel to the top of the impeller. When clothes are placed in the washing tub, most of the lint is located at the top of the impeller. Therefore, the patented lint filter can only collect a small amount of lint from the bottom of the impeller, resulting in low lint collection efficiency.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art. On the one hand, the present invention provides a pulsator assembly that improves the efficiency of lint collection.

[0006] In another aspect, the present invention provides a washing machine having the above-described impeller assembly.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0008] A pulsator assembly, comprising:

[0009] pulsator;

[0010] A lint filter is located at the center of the impeller disc;

[0011] The lint filter has a housing with an inlet on the side facing away from the impeller and an outlet on the side facing the impeller, forming a filtration channel for water to flow from top to bottom.

[0012] In the above solution, by installing the lint filter at the center of the impeller and forming a water-flowing filtration channel from top to bottom, the lint flows into the filtration channel with the water flow during the washing process, which can collect the lint into the lint filter to a greater extent and greatly improve the lint collection efficiency.

[0013] Furthermore, the housing includes a cap, a cylindrical sidewall, and a bottom wall, with one end of the cylindrical sidewall connected to the bottom wall and the other end connected to the cap;

[0014] The cover is provided with a plurality of water inlets, and the bottom wall is configured as a stepped structure protruding into the housing, and the stepped structure is provided with a plurality of water outlets.

[0015] In the above scheme, by setting the bottom wall of the wire lint filter housing into a stepped structure and providing multiple water outlet holes on the stepped structure, the water passage area of ​​the wire lint filter is increased, which can further improve the collection efficiency of wire lint.

[0016] Furthermore, a mounting base is provided at the center of the impeller, and a mounting structure is provided on the mounting base;

[0017] The housing is provided with a mating part that cooperates with the mounting structure, and the lint filter is detachably connected to the mounting base through the mating part.

[0018] Furthermore, the mounting base includes a stepped surface that protrudes upward at the center of the impeller disk, matching the stepped structure;

[0019] At least two mounting structures are provided on the outer edge of the stepped surface, and the mounting structures include buckles; at least two mating parts are provided on the cylindrical sidewall, and the mating parts include slots, and the buckles are mated and connected with the slots.

[0020] Furthermore, one end of the cylindrical sidewall extends away from the bottom wall to form an annular protrusion, and the annular protrusion is provided with a plurality of positioning elements, the positioning elements including positioning protrusions;

[0021] The outer edge of the stepped surface extends outward and is provided with multiple grooves, and the positioning protrusion is inserted into the grooves.

[0022] In the above solution, by providing multiple positioning protrusions on the cylindrical sidewall of the housing and inserting the positioning protrusions into the groove of the mounting base, the lint filter can be prevented from shifting when the impeller rotates, thus improving the installation reliability of the lint filter and the impeller disc.

[0023] Furthermore, the annular protrusion encloses the bottom wall and the stepped surface of the mounting base to form a water flow channel;

[0024] The mounting base has a chamber inside, and the stepped surface has multiple drain outlets for discharging water flowing from the outlet of the lint filter into the chamber.

[0025] Furthermore, the lint filter also includes

[0026] A backflow prevention mechanism is located below the water inlet hole;

[0027] A filter section is disposed on the bottom wall and matches the shape of the stepped structure.

[0028] Furthermore, the anti-reverse mechanism includes an anti-reverse valve plate, one end of which is rotatably connected to the cover, and the other end of which abuts against the side wall of the cover;

[0029] The side wall of the cover is also provided with a water-sealing rib extending into the housing, and the end of the water-sealing rib abuts against the other end of the check valve plate.

[0030] Furthermore, the lower surface of the impeller is provided with a plurality of water-dispelling ribs that extend outward along the radial direction of the impeller from the mounting base.

[0031] In the above solution, by setting multiple water-dispersing ribs at the bottom of the impeller, the water-dispersing ribs rotate with the impeller during washing, which can create a vortex vacuum below the impeller, making it easier for water to enter the filter channel from the water inlet of the lint filter, thereby improving the lint collection rate.

[0032] A washing machine includes: a washing tub; and a pulsator assembly as described above, the pulsator assembly being installed in the washing tub.

[0033] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0034] The impeller assembly provided by the present invention, by installing a lint filter at the center of the impeller disc and forming a water-passing filtration channel from top to bottom, allows lint to flow into the filtration channel with the water flow during the washing process, thereby collecting lint into the lint filter to a greater extent and greatly improving the lint collection efficiency.

[0035] The impeller assembly provided by the present invention increases the water passage area of ​​the wire lint filter by setting the bottom wall of the housing of the wire lint filter into a stepped structure and providing multiple water outlet holes on the stepped structure, which can further improve the collection efficiency of wire lint.

[0036] The impeller assembly provided by the present invention has multiple positioning protrusions on the cylindrical sidewall of the housing. The positioning protrusions are inserted into the grooves of the mounting base. When the impeller rotates, the lint filter can be prevented from shifting, thereby improving the installation reliability of the lint filter and the impeller disc.

[0037] The impeller assembly provided by the present invention, by setting multiple water-dispersing ribs at the bottom of the impeller, creates a vortex vacuum under the impeller during washing, making it easier for water to enter the filter channel from the water inlet of the lint filter, thereby improving the lint collection rate.

[0038] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0039] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0040] Figure 1 This is a schematic diagram of the impeller assembly of the present invention.

[0041] Figure 2 This is a schematic diagram of the structure of the impeller disk of the present invention.

[0042] Figure 3 This is a schematic diagram of the structure of the lint filter of the present invention in one state.

[0043] Figure 4 This is a cross-sectional view of the impeller assembly of the present invention in one state.

[0044] Figure 5 This is a partial structural cross-sectional view of the impeller assembly of the present invention in one state.

[0045] Figure 6 This is a cross-sectional view of the impeller assembly of the present invention in another state.

[0046] Figure 7 This is a schematic diagram of the structure of the lint filter of the present invention in another state.

[0047] Figure 8This is a top view of the structure of the lint filter of the present invention in another state.

[0048] Figure 9 This is a partial structural diagram of the washing machine of the present invention.

[0049] In the diagram: 1. Impeller assembly; 10. Impeller disc; 101. Lower surface; 102. Upper surface; 11. Mounting base; 111. Stepped surface; 112. Groove; 113. Drain outlet; 12. Chamber; 13. Mounting structure; 14. Water-repellent rib; 20. Lint filter; 211. Cover; 2111. Hinge seat; 2113. Mounting buckle; 2114. Mounting slot; 2115. Water-sealing rib; 212. Cylindrical sidewall; 2121. Annular protrusion; 213. Bottom wall; 22. Water inlet; 23. Water outlet; 24. Fitting part; 25. Positioning protrusion; 26. Check valve plate; 261. Pin; 262. Torsion spring; 27. Impeller liner; 28. Impeller shaft; 3. Washing tub; 100. Washing machine.

[0050] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0051] To make the objectives, 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 accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0052] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0053] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] like Figures 1 to 8 As shown, a pulsator assembly includes: a pulsator disk 10; a lint filter 20 disposed at the center of the pulsator disk 10; the lint filter 20 has a housing, the housing having a water inlet 22 on the side opposite to the pulsator disk 10 and a water outlet 23 on the side facing the pulsator disk 10, to form a filtration channel for water to flow from top to bottom.

[0056] The lint filter 20 is positioned at the center of the impeller 10. When the impeller 10 rotates, lint flows in with the water from the upper water inlet 22 and is collected in the lint filter 20. Then, the water flows out through the lower water outlet 23. At this time, a filtration channel with water flowing from top to bottom is formed inside the lint filter 20. Since most of the lint will be located at the top of the impeller when clothes are placed in the washing tub, the lint can be collected into the lint filter 20 to a greater extent by forming a filtration channel with water flowing from top to bottom, which greatly improves the lint collection efficiency.

[0057] In some implementations, such as Figure 3 As shown, the housing includes a cover 211, a cylindrical sidewall 212, and a bottom wall 213. One end of the cylindrical sidewall 212 is connected to the bottom wall 213, and the other end is connected to the cover 211.

[0058] The cover 211 is provided with a plurality of water inlet holes 22, and the bottom wall 213 is configured as a stepped structure protruding into the housing, and the stepped structure is provided with a plurality of water outlet holes 23.

[0059] By setting the bottom wall 213 of the wire lint filter 20 as a stepped structure and providing multiple water outlet holes 23 on the stepped structure, the water passage area of ​​the wire lint filter 20 is increased, which can further improve the collection efficiency of wire lint.

[0060] Specifically, the stepped structure includes multiple alternating vertical and horizontal stepped sections arranged in a ring. The distance between the horizontal stepped sections and the cover 211 decreases sequentially towards the interior of the shell, while the vertical stepped sections gradually protrude from the inside out. Each vertical and horizontal stepped section is provided with multiple water outlet holes 23.

[0061] By setting multiple vertical and horizontal steps on the stepped structure, and providing multiple water outlets 23 on each vertical and horizontal step, the water passage area of ​​the wire lint filter 20 can be further increased. In addition, the water flowing into the wire lint filter 20 can form a dispersed flow along the stepped bottom wall 213, which can delay clogging of the wire lint filter 20 and greatly improve its service life.

[0062] Preferably, the step structure includes an alternating ring of one vertical step and two horizontal steps.

[0063] It should be noted that when the water inlet of the wire lint filter 20 is low, multiple water outlet holes 23 can be provided only on the stepped bottom wall 213 of the wire lint filter 20; however, when the water inlet of the wire lint filter 20 is high, a small number of water passage holes can be provided in other parts of the impeller 10 to improve the water flow efficiency on the upper and lower sides of the impeller assembly 1.

[0064] In some implementations, such as Figure 8 As shown, one end of the cylindrical sidewall 212 is connected to the bottom wall 213, and the other end of the cylindrical sidewall 212 is provided with a hinge seat 2111. The cover 211 is provided with a hinge, and the hinge is hinged to the hinge seat 2111.

[0065] like Figure 7 and Figure 8 As shown, the cover 211 is also provided with a mounting buckle 2113, and the cylindrical sidewall 212 has a mounting groove 2114 on the sidewall near the other end of the cylindrical sidewall 212. The mounting buckle 2113 is engaged with the mounting buckle 2113. This allows the user to easily open the cover 211 to clean the lint inside the lint filter 20.

[0066] In some embodiments, a mounting base 11 is provided at the center of the impeller 10, and a mounting structure 13 is provided on the mounting base 11;

[0067] The housing is provided with a mating part 24 that cooperates with the mounting structure 13, and the lint filter 20 is detachably connected to the mounting base 11 through the mating part 24.

[0068] It should be noted that the mounting base can be fixedly installed at the center of the impeller. Preferably, the mounting base and the impeller are designed as a single unit.

[0069] In some implementations, such as Figure 2 As shown, the mounting base 11 includes a stepped surface 111 that protrudes upward from the center of the impeller disk 10, which matches the stepped structure;

[0070] At least two mounting structures 13 are provided on the outer edge of the stepped surface 111, each mounting structure 13 including a snap-fit; at least two mating parts 24 are correspondingly provided on the cylindrical sidewall 212, each mating part 24 including a slot, and the snap-fit ​​engages with the slot. This facilitates the user to remove the filter for cleaning.

[0071] In some implementations, such as Figure 2 and Figure 7 As shown, one end of the cylindrical sidewall 212 extends away from the bottom wall 213 to form an annular protrusion 2121. The annular protrusion 2121 is provided with a plurality of positioning elements, including positioning protrusions 25.

[0072] The outer edge of the stepped surface 111 extends outward and is provided with a plurality of grooves 112, and the positioning protrusion 25 is inserted into the grooves 112.

[0073] In the above solution, by providing multiple positioning protrusions 25 on the cylindrical sidewall 212 of the housing and inserting the positioning protrusions 25 into the groove 112 of the mounting base 11, the lint filter 20 can be prevented from shifting when the impeller rotates, thereby improving the installation reliability of the lint filter 20 and the impeller disk 10.

[0074] Preferably, the annular protrusion 2121 has a plurality of positioning protrusions 25 on its end face.

[0075] In some embodiments, the annular protrusion 2121 encloses a water flow channel between the bottom wall 213 and the stepped surface 111 of the mounting base 11;

[0076] The mounting base 11 has a chamber 12 inside, and the stepped surface 111 has a plurality of drain outlets 113 for discharging water flowing out of the water outlet 23 of the lint filter 20 into the chamber 12.

[0077] In some embodiments, the stepped surface 111 includes a plurality of alternating vertical stepped surfaces 111 and a plurality of horizontal stepped surfaces 111. The height of the plurality of horizontal stepped surfaces 111 increases sequentially towards the lint filter 20, and the plurality of vertical stepped surfaces 111 are arranged to gradually bulge outward from the inside. Each horizontal stepped surface 111 is provided with a plurality of drain outlets 113.

[0078] Preferably, the area of ​​the drain outlet 113 on the side of the stepped surface 111 away from the center is larger than the area of ​​the drain outlet 113 on the side closer to the center.

[0079] The water flowing out of the wire chip filter 20 will flow downwards along the stepped surface 111. Therefore, the area of ​​the drain outlet 113 on the stepped surface 111 is set such that the side away from the center is larger than the side closer to the center, so that the water flow is smoother and the water flow channel is not congested, thereby reducing the collection efficiency of the wire chip filter 20.

[0080] In some embodiments, the impeller assembly 1 further includes an impeller liner 27 for connection to the impeller shaft 28 of the washing machine 100, the impeller liner 27 being disposed at the center within the mounting base 11.

[0081] In some embodiments, the lint filter 20 further includes

[0082] A backflow prevention mechanism is provided below the water inlet 22;

[0083] A filter section is disposed on the bottom wall 213, and its shape matches that of the stepped structure. Preferably, the filter section is a filter screen.

[0084] In some embodiments, the anti-reverse mechanism includes an anti-reverse valve plate 26, one end of which is rotatably connected to the cover 211, and the other end abuts against the side wall of the cover 211;

[0085] The side wall of the cover 211 is also provided with a water-sealing rib 2115 extending into the housing, and the end of the water-sealing rib 2115 abuts against the other end of the check valve plate 26.

[0086] Preferably, such as Figure 5 As shown, the check valve mechanism includes two check valve plates 26. One end of each check valve plate 26 is rotatably connected to the center of the cover 211, and the other end extends outward from the housing. The side wall of the cover 211 is also provided with a water-sealing rib 2115 extending into the housing, and the end of the water-sealing rib 2115 abuts against the other end of each check valve plate 26.

[0087] One end of each check valve plate 26 is rotatably connected to the center position of the cover 211 via a pin 261, and a torsion spring 262 is sleeved on the outer surface of the pin 261, allowing the check valve plate 26 to rotate around the pin 261. Figure 6 As shown, during washing, the water flow entering the lint filter 20 from above the impeller 10 can overcome the force of the torsion spring 262, causing the check valve plate 26 to rotate downwards around the pin 261, and the water flow carries the lint into the housing. Figure 6 (The middle arrow indicates the direction of water flow). A filter screen is installed on the bottom wall 213 inside the shell. The wire debris is filtered out by the filter screen and left inside the shell. Water flows out from the water outlet 23 on the bottom wall 213 of the wire debris filter 20.

[0088] like Figure 4 As shown, when water flows into the wire lint filter 20 from the outlet hole 23, or when no water flows into the inlet hole 22 of the wire lint filter 20, the torsion spring 262 drives the check valve plate 26 to reset and close the inlet hole 22 of the wire lint filter 20.

[0089] In some embodiments, the lower surface 101 of the impeller 10 is provided with a plurality of water-dispelling ribs 14, which extend radially outward from the mounting base 11 along the impeller 10.

[0090] In the above scheme, by setting multiple water-dispersing ribs 14 at the bottom of the impeller 10, during washing, the water-dispersing ribs 14 rotate with the impeller 10, which can form a vortex vacuum below the impeller 10, making it easier for water to enter the filter channel from the water inlet 22 of the lint filter 20. Then, with the agitation of the stirring ribs, the water is thrown out from the gap between the impeller and the bottom of the inner tub to the space between the inner tub and the outer tub, which improves the lint collection rate.

[0091] In some embodiments, the upper surface 102 of the impeller 10 is provided with at least two water-repelling blades.

[0092] like Figure 9 As shown, a washing machine 100 includes: a washing tub 3; and any of the above-described impeller assembly 1, the impeller assembly 1 being installed in the washing tub 3.

[0093] When clothes are placed in the washing tub 3, most of the lint or other dirt on the clothes will remain above the impeller assembly 1 during washing. Therefore, by setting the lint filter 20 in the center of the impeller 10, when the impeller 10 rotates, the lint flows in with the water from the upper water inlet 22 and is collected in the lint filter 20. Then the water flows out through the lower water outlet 23. At this time, a filtration channel with water flowing from top to bottom is formed inside the lint filter 20, which can collect lint into the lint filter 20 to a greater extent and greatly improve the lint collection efficiency.

[0094] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A pulsator assembly, characterized in that, include: pulsator (10); Mounting base (11) is located at the center of the impeller (10) and has a chamber (12) inside. A lint filter (20) is installed on the side of the mounting base (11) opposite to the impeller (10), with its sidewall extending toward the mounting base (11) and forming an annular protrusion (2121) surrounding the sidewall of the mounting base (11). The lint filter (20) has a cylindrical shell with a water inlet (22) on the side facing away from the mounting base (11) and a stepped structure protruding inward on the side of the shell facing the mounting base (11), with a water outlet (23) on the stepped structure. The mounting base (11) has a stepped surface (111) on the side facing the housing that matches the stepped structure. The stepped surface (111) is provided with a drain outlet (113). The annular protrusion (2121) encloses the stepped structure of the housing and the stepped surface (111) of the mounting base (11) to form a water flow channel. During the rotation of the impeller (10), the lint filter (20), the mounting base (11), and the annular protrusion (2121) work together to allow water carrying lint to enter the housing for filtration through the inlet hole (22). The filtered water flows into the water channel through the outlet hole (23) and then enters the chamber (12) through the drain hole (113).

2. The impeller assembly according to claim 1, characterized in that: The stepped structure includes multiple vertical stepped sections and multiple horizontal stepped sections arranged in an alternating ring. The distance between the multiple horizontal stepped sections and the mounting base (11) increases sequentially in the direction of the interior of the housing. The multiple vertical stepped sections gradually protrude from the inside to the outside. Each vertical and horizontal stepped section is provided with multiple water outlet holes (23). The stepped surface (111) includes multiple vertical stepped surfaces and multiple horizontal stepped surfaces arranged alternately. The height of the multiple horizontal stepped surfaces increases sequentially in the direction close to the lint filter (20), and the multiple vertical stepped surfaces are arranged to gradually protrude from the inside to the outside. Each horizontal stepped surface is provided with multiple drainage outlets (113), and the area of ​​the drainage outlets (113) on the side of the stepped surface (111) away from the center position is larger than the area of ​​the drainage outlets (113) on the side closer to the center position.

3. The impeller assembly according to claim 1, characterized in that: The housing includes a cover (211), a cylindrical sidewall (212), and a bottom wall (213). One end of the cylindrical sidewall (212) is connected to the bottom wall (213), and the other end is connected to the cover (211). The cover (211) is provided with a plurality of water inlet holes (22), and the bottom wall (213) is configured as a stepped structure protruding into the housing, and the stepped structure is provided with a plurality of water outlet holes (23).

4. The impeller assembly according to claim 3, characterized in that: The mounting base (11) is provided with a mounting structure (13); The housing is provided with a mating part (24) that cooperates with the mounting structure (13), and the lint filter (20) is detachably connected to the mounting base (11) through the mating part (24).

5. The impeller assembly according to claim 4, characterized in that: The mounting base (11) includes a stepped surface (111) that protrudes upward from the center of the impeller (10), which matches the stepped structure; The outer edge of the stepped surface (111) is provided with at least two of the mounting structures (13), the mounting structures (13) including snap-fit; At least two mating parts (24) are provided on the cylindrical sidewall (212), and the mating part (24) includes a slot, and the buckle is connected to the slot.

6. The impeller assembly according to claim 3, characterized in that: The annular protrusion (2121) is formed by extending from one end of the cylindrical sidewall (212) away from the bottom wall (213). The annular protrusion (2121) is provided with a plurality of positioning elements, including positioning protrusions (25). The outer edge of the stepped surface (111) extends outward and is provided with a plurality of grooves (112), and the positioning protrusion (25) is inserted into the grooves (112).

7. The impeller assembly according to claim 3, characterized in that: The annular protrusion (2121) encloses the bottom wall (213) and the stepped surface (111) of the mounting base (11) to form a water flow channel; The stepped surface (111) is provided with a plurality of drain outlets (113) for discharging water flowing from the water outlet (23) of the wire chip filter (20) into the chamber (12).

8. The impeller assembly according to claim 3, characterized in that: The lint filter (20) also includes a backflow prevention mechanism, which is disposed below the water inlet (22); A filter section is provided on the bottom wall (213) and matches the shape of the stepped structure.

9. The impeller assembly according to claim 8, characterized in that: The anti-reverse mechanism includes an anti-reverse valve plate (26), one end of which is rotatably connected to the cover (211), and the other end abuts against the side wall of the cover (211); The side wall of the cover (211) is also provided with a water-sealing rib (2115) extending into the housing, and the end of the water-sealing rib (2115) abuts against the other end of the check valve plate (26).

10. The impeller assembly according to claim 1, characterized in that: The lower surface (101) of the impeller (10) is provided with a plurality of water-dispelling ribs (14), which extend outward along the radial direction of the impeller (10) from the mounting base (11). The upper surface (102) of the impeller (10) is provided with at least two water-repelling blades.

11. A washing machine, characterized in that, include: Washing tub (3); And the impeller assembly according to any one of claims 1-10, wherein the impeller assembly is installed in the washing tub (3).

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