Impeller assembly and laundry treating apparatus having the same

Abstract

The present application discloses a kind of impeller assembly and the clothes processing device with it, impeller assembly is used in clothes processing device, clothes processing device has washing space, impeller assembly is suitable for being located in washing space and including impeller and impeller cover, impeller cover covers in impeller to separate impeller from the clothes to be washed, impeller cover is formed with multiple water passing holes, and impeller cover includes cover body part and shaft core part, shaft core part is located in the side of cover body part away from impeller, shaft core part is arranged corresponding with the central axis of impeller and extends along the axial direction of impeller.According to the impeller assembly of the present application, it can prevent the clothes to be washed from winding, effectively reduce the wear of clothes.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and in particular to an impeller assembly and a garment processing device having the same. Background Technology

[0002] In related technologies, pulsator washing machines mainly rely on the forward and reverse rotation of the pulsator to drive the water flow to rotate clockwise and counterclockwise, thereby washing clothes; however, the pulsator mechanically agitates the clothes, and the unavoidable friction between the pulsator and the clothes can easily cause the clothes to tangle and wear, resulting in a poor user experience. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes an impeller assembly that can prevent clothes to be washed from tangling and effectively reduce wear and tear on the clothes.

[0004] The present invention also proposes a garment processing device having the above-described impeller assembly.

[0005] According to a first aspect of the present invention, the impeller assembly is used in a garment handling apparatus having a washing space. The impeller assembly is adapted to be disposed in the washing space and includes: an impeller; an impeller cover, the impeller cover being disposed on the impeller to separate the impeller from the garments to be washed, the impeller cover having a plurality of water passage holes, and the impeller cover including a cover body portion and a shaft core portion, the shaft core portion being disposed on the side of the cover body portion opposite to the impeller, the shaft core portion being disposed corresponding to the central axis of the impeller and extending along the axial direction of the impeller.

[0006] According to the impeller assembly of the present invention, by providing an impeller cover to separate the impeller from the clothes to be washed, the wear of the clothes to be washed can be reduced. At the same time, by providing a shaft core on the side of the cover body away from the impeller, and making the shaft core corresponding to the central axis of the impeller, the clothes to be washed can be effectively prevented from getting tangled, thereby further reducing the wear and damage to the clothes.

[0007] In some embodiments, the impeller includes a hub and a first drainage blade, the first drainage blade being disposed on the hub and adapted to drain water to the radially outer side of the hub when the impeller rotates, the cover portion including a water-passing portion and a water-blocking portion, the water-passing portion being located on one axial side of the hub and forming the water-passing hole, the water-blocking portion being adapted to be connected to the spray plate of the clothing treatment device and blocking at least one axial side of the first drainage blade, and the shaft core portion being disposed on the side of the water-passing portion opposite to the hub.

[0008] In some embodiments, the water-blocking portion has a water-blocking edge that extends axially toward the impeller along the impeller cover.

[0009] In some embodiments, the impeller further includes a pressure plate, which is formed in an annular structure and disposed at one axial end of a plurality of the first drainage blades, so as to guide water to the radially outer side of the hub when the impeller rotates.

[0010] In some embodiments, the impeller further includes a second drainage blade disposed between the hub and the first drainage blade, and adapted to drain water toward one axial side of the hub when the impeller rotates.

[0011] In some embodiments, the second drainage blade is configured to drain water toward one axial side of the hub when the impeller rotates in the forward direction, and to drain water toward the other axial side of the hub when the impeller rotates in the reverse direction.

[0012] In some embodiments, the impeller further includes a first reinforcing ring disposed between the first drainage blade and the second drainage blade, wherein the radially inner end of the first drainage blade is connected to the first reinforcing ring, and the radially outer end of the second drainage blade is connected to the first reinforcing ring.

[0013] In some embodiments, the impeller has multiple sets of blades arranged radially along the hub, each set of blades including at least one second drainage blade, and adjacent sets of blades having opposite flow directions.

[0014] In some embodiments, there are multiple water passages, each water passage is provided corresponding to a set of blade groups, and an annular partition rib is provided between two adjacent water passages corresponding to two sets of blade groups with opposite flow directions.

[0015] In some embodiments, the impeller has multiple sets of blades arranged radially along the hub, each set of blades including at least one second drainage blade, and the impeller further includes a second reinforcing ring connected between two adjacent sets of blades.

[0016] In some embodiments, the cover portion has a through opening, the shaft core portion is disposed at the through opening and is formed into a cylindrical structure, the cylindrical structure has the water passage hole, and the water passage hole of the cylindrical structure communicates with the through opening.

[0017] In some embodiments, the water passage of the cylindrical structure includes at least one of a first nozzle, a second nozzle, and a third nozzle. The first nozzle is located at the upper end of the cylindrical structure and is used to guide water to flow out along the axial direction of the cylindrical structure. The second nozzle is located at the upper part of the cylindrical structure and is used to guide water to flow out in a direction inclined relative to the axial direction of the cylindrical structure. The third nozzle is located on the peripheral wall of the cylindrical structure and is used to guide water to flow out circumferentially along the cylindrical structure.

[0018] In some embodiments, the water passage of the cylindrical structure includes a first nozzle, a second nozzle, and a third nozzle. The cylindrical structure includes a first segment and a second segment. The first segment is connected to the top end of the second segment. The first nozzle is formed at the top end of the first segment. The second nozzle is formed at the top end of the second segment and is located radially outward from the first segment. The third nozzle is formed in the second segment and is located below the second nozzle.

[0019] In some embodiments, the first segment is formed as a conical cylinder, the outer peripheral wall of which, together with the second segment, defines the second nozzle.

[0020] In some embodiments, the cross-sectional area of ​​the lower end of the conical cylinder is smaller than the cross-sectional area of ​​its upper end, and the lower part of the conical cylinder extends into the second section.

[0021] According to a second aspect of the present invention, a garment handling apparatus includes: an outer drum; an inner drum rotatably disposed within the outer drum and defining a washing space; and an impeller assembly, wherein the impeller assembly is an impeller assembly according to the first aspect of the present invention and is disposed at the bottom of the washing space, and an impeller cover is disposed above the impeller.

[0022] According to the clothing handling apparatus of the present invention, by employing the above-described impeller assembly, the clothes to be washed can be prevented from tangling together, reducing wear and tear on the clothes and improving the user experience.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of an impeller of an impeller assembly according to an embodiment of the present invention;

[0026] Figure 2 yes Figure 1Another schematic diagram of the impeller shown;

[0027] Figure 3 yes Figure 1 Another schematic diagram of the impeller shown;

[0028] Figure 4 It is along Figure 3 Sectional view of line AA in the middle;

[0029] Figure 5 This is a schematic diagram of an impeller shroud for an impeller assembly according to another embodiment of the present invention;

[0030] Figure 6 yes Figure 5 Another schematic diagram of the impeller shroud shown;

[0031] Figure 7 yes Figure 5 Another schematic diagram of the impeller shroud shown;

[0032] Figure 8 It is along Figure 7 Sectional view of the middle BB line; Figure 9 This is a schematic diagram of an impeller of an impeller assembly according to another embodiment of the present invention;

[0033] Figure 10 yes Figure 9 Another schematic diagram of the impeller shown;

[0034] Figure 11 yes Figure 9 Another schematic diagram of the impeller shown;

[0035] Figure 12 It is along Figure 11 A cross-sectional view of the CC line;

[0036] Figure 13 This is a schematic diagram of a clothing processing apparatus according to an embodiment of the present invention;

[0037] Figure 14 yes Figure 13 Another schematic diagram of the garment handling device shown;

[0038] Figure 15 yes Figure 13 Another schematic diagram of the garment handling device shown.

[0039] Figure label:

[0040] Clothing handling device 100, water passage space 100a, washing space 100b

[0041] Impeller assembly 1

[0042] Impeller 11, Blade Group 11A

[0043] Wheel hub 111, spline structure 111F,

[0044] First drainage blade 112

[0045] Second drainage blade 113

[0046] Water pressure plate 114, first reinforcing ring 115, second reinforcing ring 116

[0047] Impeller cover 12, water passage hole 120, first nozzle 120a, second nozzle 120b, third nozzle 120c

[0048] Cover body 12A, through opening 12A1, shaft core 12B, cylindrical structure 12C

[0049] Water-blocking part 121, water-blocking edge 1211, mounting part 1212

[0050] Water passage section 122,

[0051] Section 1, 123; Section 2, 124; Circular dividing bar, 125.

[0052] Outer cylinder 2, inner cylinder 3, spray plate 4, spray nozzle 40

[0053] 5. Washing shaft; 6. Spin-drying shaft; 7. Clutch. Detailed Implementation

[0054] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0055] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0056] Hereinafter, with reference to the accompanying drawings, an impeller assembly 1 according to an embodiment of the present invention will be described. The impeller assembly 1 is used in a garment processing device 100, which has a washing space 100b. The impeller assembly 1 is adapted to be disposed in the washing space 100b, so that the impeller assembly 1 can agitate the water in the washing space 100b to complete the washing and other processing of the garments to be washed in the washing space 100b.

[0057] like Figure 1 , Figure 5 and Figure 13 As shown, the impeller assembly 1 includes an impeller 11 and an impeller cover 12. The rotation of the impeller 11 can drive the water flow in the washing space 100b, so that the water flow can rinse the clothes to be washed, etc., to achieve the washing of the clothes. The impeller cover 12 is provided on the impeller 11 to separate the impeller 11 from the clothes to be washed. The impeller 11 can rotate relative to the impeller cover 12, so the impeller cover 12 can avoid direct contact between the impeller 11 and the clothes to be washed and generate friction, effectively reducing the wear and tear on the clothes to be washed. The impeller cover 12 has a plurality of water passage holes 120, which can pass through the impeller cover 12 along the axial direction of the impeller 11. So the rotation of the impeller 11 can still drive the water flow in the washing space 100b, so that the setting of the impeller cover 12 will not affect the function of the impeller 11.

[0058] The impeller cover 12 includes a cover body portion 12A and a shaft core portion 12B. The cover body portion 12A can cover at least a portion of the impeller 11. The cover body portion 12A can cover the entire impeller 11, or the cover body portion 12A can only cover a part of the impeller 11. The shaft core portion 12B is located on the side of the cover body portion 12A away from the impeller 11. The shaft core portion 12B is corresponding to the central axis of the impeller 11 and extends along the axial direction of the impeller 11.

[0059] The shaft core portion 12B is positioned corresponding to the central axis of the impeller 11. This can be understood as the central axis of the shaft core portion 12B being adjacent to the central axis of the impeller 11, or the central axis of the shaft core portion 12B coinciding with the central axis of the impeller 11. For example, on the cross-section of the impeller 11, the orthographic projection of the central axis of the impeller 11 can be located within the outer contour of the orthographic projection of the shaft core portion 12B, or the orthographic projection of the central axis of the impeller 11 can be located on the edge of the outer contour of the orthographic projection of the shaft core portion 12B, or the orthographic projection of the central axis of the impeller 11 can be spaced outside the outer contour of the orthographic projection of the shaft core portion 12B. The shaft core portion 12B extends along the axial direction of the impeller 11. The shaft core portion 12B can extend along the extension direction of the central axis of the impeller 11, or it can extend in a direction inclined relative to the central axis of the impeller 11, so that the central axis of the shaft core portion 12B can coincide with, be parallel to, or not parallel to the central axis of the impeller 11 (e.g., intersect or be non-parallel).

[0060] When the impeller assembly 11 is applied to the garment handling device 100, the shaft core 12B can extend into the washing space 100b of the garment handling device 100. Since the shaft core 12B corresponds to the central axis of the impeller 11, for example, the shaft core 12B can be located at the center of the washing space 100b. The shaft core 12B can correspond to the position where the water flow forms a vortex when the impeller 11 rotates. Thus, the shaft core 12B can reduce the vortex, prevent the clothes to be washed from getting tangled, and prevent the clothes from getting tighter and tighter, so as to further reduce the wear and tear on the clothes, reduce the damage to the clothes, and improve the user experience.

[0061] It is understood that the water passage hole 120 may be formed only on the cover portion 12A, or only on the shaft core portion 12B, or both the cover portion 12A and the shaft core portion 12B may have water passage holes 120 formed on each. The shaft core portion 12B may be coaxially arranged with the impeller 11 or non-coaxially arranged with the impeller 11. The arrangement of the multiple water passage holes 120 can be configured according to the specific application; for example, the multiple water passage holes 120 may be arranged in multiple rows and columns, or in a ring array, etc.

[0062] Therefore, according to the impeller assembly 1 of the present invention, by providing an impeller cover 12 to separate the impeller 11 from the clothes to be washed, the wear of the clothes to be washed can be reduced. At the same time, by providing a shaft core portion 12B on the side of the cover portion 12A away from the impeller 11, and by providing the shaft core portion 12B in correspondence with the central axis of the impeller 11, the clothes to be washed can be effectively prevented from getting tangled, thereby further reducing the wear and damage to the clothes.

[0063] In some embodiments, such as Figure 1 and Figure 9 As shown, the impeller 11 includes a hub 111 and a first drainage blade 112. The first drainage blade 112 is disposed on the hub 111 and is adapted to drain water radially outward from the hub 111 when the impeller 11 rotates. When the impeller assembly 1 is used in the garment handling device 100, the water drained by the first drainage blade 112 participates in the water circulation and can ultimately rinse the garments to be washed approximately radially along the hub 111, improving the washing effect. At the same time, this water flow can disperse the garments to be washed, preventing them from tangling together, thereby further reducing wear and tear on the garments and improving the user experience. There can be one or more first drainage blades 112, which can be disposed radially outward from the hub 111. When there are multiple first drainage blades 112, they can be spaced apart circumferentially along the hub 111.

[0064] Understandably, when the impeller assembly 1 is used in the garment handling device 100, if the impeller 11 is configured to rotate in both the forward and reverse directions, then when the impeller 11 rotates in the forward direction, the first drainage blade 112 can drain water to the radially outer side of the hub 111, and when the impeller 11 rotates in the reverse direction, the first drainage blade 112 can also drain water to the radially outer side of the hub 111; similarly, if the impeller 11 is configured to rotate only in the forward direction or only in the reverse direction, then when the impeller 11 rotates, the first drainage blade 112 drains water to the radially outer side of the hub 111.

[0065] It should be noted that "forward rotation" and "reverse rotation" are relative concepts. The direction of rotation of forward rotation is opposite to that of reverse rotation. For example, if forward rotation is clockwise, then reverse rotation is counterclockwise, and if forward rotation is counterclockwise, then reverse rotation is clockwise.

[0066] like Figures 5-8 As shown, the cover portion 12A includes a water passage portion 122 and a water blocking portion 121. The water passage portion 122 is located on one axial side of the hub 111, and the water passage portion 122 forms a water passage hole 120. The water passage hole 120 can pass through the water passage portion 122 along the axial direction of the impeller 11. When the impeller 11 rotates, the water on the side of the water passage portion 122 facing the impeller 11 can flow through the water passage hole 120 to the side of the water passage portion 122 away from the impeller 11 under the driving action of the impeller 11. The water on the side of the water passage portion 122 away from the impeller 11 can also flow through the water passage hole 120 to the side of the water passage portion 122 facing the impeller 11 under the driving action of the impeller 11, thereby facilitating the continuous circulation of water flow to enhance the cleaning effect. The water-blocking part 121 is adapted to be connected to the spray plate 4 of the clothing treatment device 100, and the water-blocking part 121 blocks at least one side of the first drainage blade 112 in the axial direction, so as to ensure the amount and pressure of water discharged by the first drainage blade 112 to the radially outer side of the hub 111. This can prevent a part of the water discharged by the first drainage blade 112 to the radially outer side of the hub 111 from flowing elsewhere and affecting the cleaning effect, which is beneficial to improving the cleaning effect of the clothing treatment device 100.

[0067] The shaft core 12B is located on the side of the water passage 122 opposite to the hub 111.

[0068] For example, in Figure 1 , Figure 5 and Figure 13 In the example, the impeller assembly 1 can be located at the bottom of the washing space 100b of the clothes handling device 100. The impeller 11 is arranged vertically, that is, the central axis of the impeller 11 extends vertically. The impeller cover 12 can be placed above the impeller 11. The water passage part 122 is located above the hub 111. The water blocking part 121 covers the upper side of the first drain blade 112. The shaft core part 12B is located on the upper side of the water passage part 122.

[0069] Furthermore, it is understood that when the impeller cover 12 is installed on one axial side of the impeller 11, the water-blocking part 121 can block one axial side of the first drainage blade 112; when the impeller cover 12 is installed on both axial sides of the impeller 11, the water-blocking part 121 can block both axial sides of the first drainage blade 112.

[0070] Optionally, in Figure 1 and Figure 9 In the example, the first drainage blade 112 is formed into a plate-like structure, so the structure of the first drainage blade 112 is simple. The first drainage blade 112 is arranged parallel to the central axis of the hub 111, so the central surface of the first drainage blade 112 is parallel to the central axis of the hub 111. When the impeller 11 rotates, the first drainage blade 112 can apply a force to the water, so that the water flows outward along the radial direction of the hub 111 under the drive of the first drainage blade 112 due to centrifugal force, etc., thereby ensuring that the first drainage blade 112 can discharge the water to the radial outer side of the hub 111 when the impeller 11 rotates.

[0071] Of course, the first drainage blade 112 can also be arranged at an angle relative to the central axis of the hub 111, for example, the central plane of the first drainage blade 112 and the central axis of the hub 111 define an acute angle.

[0072] Optionally, such as Figure 1 and Figure 9 As shown, the first drainage blade 112 is formed as a flat plate structure to facilitate its processing. Of course, the first drainage blade 112 can also be formed as a curved plate structure.

[0073] Optionally, such as Figure 1 and Figure 9 As shown, the first drainage blade 112 extends in a straight line along the radial direction of the hub 111. The center plane of the first drainage blade 112 also extends in a straight line along the radial direction of the hub 111. In this case, the center plane of the first drainage blade 112 can be parallel to the radial direction of the hub 111, or the center plane of the first drainage blade 112 can define an acute angle with the radial direction of the hub 111. Alternatively, the first drainage blade 112 can also extend along a radial curve of the hub 111.

[0074] In some embodiments, such as Figures 5-8As shown, the water-blocking part 121 has a water-blocking edge 1211, which can be provided at the edge of the water-blocking part 121. The water-blocking edge 1211 can be formed into a ring structure. The water-blocking edge 1211 extends towards the impeller 11 along the axial direction of the impeller cover 12. To a certain extent, it can reduce the cross-sectional area of ​​the water passage from the first drainage blade 112 to the radially outer side of the hub 111, which is beneficial to increase the water pressure of the water discharged from the first drainage blade 112 to the radially outer side of the hub 111, so as to improve the cleaning effect and rinsing ability of this part of the water flow on the clothes to be washed.

[0075] In some embodiments, such as Figure 1 and Figure 9 As shown, the impeller 11 also includes a water-pressing plate 114, which is formed into a ring structure and is located at one axial end of the plurality of first drainage blades 112. When the impeller 11 rotates, it guides the water to the radial outer side of the hub 111, which helps to ensure the amount and pressure of water discharged by the first drainage blades 112 to the radial outer side of the hub 111. This can further prevent some of the water discharged by the first drainage blades 112 to the radial outer side of the hub 111 from flowing elsewhere and affecting the cleaning effect, thereby further improving the cleaning effect of the clothing treatment device 100.

[0076] For example, in Figure 1 , Figure 9 and Figure 13 In the example, the central axis of the impeller 11 extends vertically, and the pressure plate 114 is located at the upper end of multiple first drainage blades 112. Each first drainage blade 112 is connected to the pressure plate 114. Thus, any two adjacent first drainage blades 112 and the pressure plate 114 can jointly define a drainage channel. The drainage channel extends approximately along the radial straight line or curve of the hub 111 to ensure that more water is discharged to the radial outer side of the hub 111 when the impeller 11 rotates.

[0077] In some embodiments, such as Figure 1 and Figure 9 As shown, the impeller 11 also includes a second drainage blade 113, which is disposed between the hub 111 and the first drainage blade 112. The second drainage blade 113 is adapted to drain water to one axial side of the hub 111 when the impeller 11 rotates. Thus, when the impeller assembly 1 is used in the clothing handling device 100, the impeller 11 can drive the water to rotate around the central axis of the hub 111 while driving the water flow to flow along the axial direction of the hub 111. This allows the water flow to wash the clothes while simultaneously causing them to tumble along the axial direction of the hub 111, thus dispersing the clothes and preventing them from tangling and damaging each other. This helps to achieve virtually zero tangling, zero damage, and zero wear on the clothes, thereby improving the user experience of the clothing handling device 100.

[0078] The second drainage blade 113 can be one or more; when there are multiple second drainage blades 113, the multiple second drainage blades 113 can be arranged at intervals along the circumference of the hub 111.

[0079] Understandably, when the impeller assembly 1 is used in the garment handling device 100, if the impeller 11 is configured to rotate in both the forward and reverse directions, then when the impeller 11 rotates in the forward direction, the second drainage blade 113 can drain water to one axial side of the hub 111, and when the impeller 11 rotates in the reverse direction, the second drainage blade 113 can also drain water to the other axial side of the hub 111; similarly, if the impeller 11 is configured to rotate only in the forward direction or only in the reverse direction, then when the impeller 11 rotates, the second drainage blade 113 will drain water to either axial side of the hub 111.

[0080] In some embodiments of the present invention, such as Figure 1 and Figure 9 As shown, the second drainage blade 113 is formed into a plate-like structure, thus the structure of the second drainage blade 113 is simple. The second drainage blade 113 is arranged obliquely relative to the central axis of the hub 111, so the surface where the second drainage blade 113 is located is arranged obliquely relative to the central axis of the hub 111. When the impeller 11 rotates, the second drainage blade 113 can apply a squeezing force to the water. This squeezing force has a first component force along the circumference of the hub 111 and a second component force along the axial direction of the hub 111. The first component force is used to drive the water to follow the second drainage blade 113 to flow around the central axis of the hub 111, and the second component force is used to drive the water to flow along the axial direction of the hub 111, thereby ensuring that the second drainage blade 113 can discharge water to the corresponding axial side of the hub 111 when the impeller 11 rotates.

[0081] Optionally, such as Figure 1 and Figure 9 As shown, the second drainage blade 113 is formed as a flat plate structure to facilitate its processing. Of course, the second drainage blade 113 can also be formed as a curved plate structure.

[0082] Optionally, such as Figure 1 and Figure 9 As shown, the second drainage blade 113 extends in a straight line along the radial direction of the hub 111. Therefore, the centerline of the second drainage blade 113 also extends in a straight line along the radial direction of the hub 111. In this case, the centerline of the second drainage blade 113 can be parallel to the radial direction of the hub 111, or the centerline of the second drainage blade 113 can define an acute angle with the radial direction of the hub 111. Alternatively, the second drainage blade 113 can also extend along a curved radial direction of the hub 111.

[0083] For example, in Figure 1 and Figure 9In the example, the second drainage blade 113 is formed as a flat plate structure, the center line of the second drainage blade 113 is parallel to the radial direction of the hub 111, and the plane on which the second drainage blade 113 is located is inclined relative to the central axis of the hub 111, so that an acute angle is defined between the plane on which the second drainage blade 113 is located and the central axis of the hub 111.

[0084] Optionally, in Figure 1 and Figure 9 In the example, the second drainage blade 113 is configured to drain water to one axial side of the hub 111 when the impeller 11 rotates in the forward direction, and to drain water to the other axial side of the hub 111 when the impeller 11 rotates in the reverse direction. This allows the impeller assembly 1 in this application to be applicable to the washing logic of some current clothing handling devices 100. For example, during the washing process, the impeller 11 rotates in the forward direction for a first preset time, then the impeller 11 rotates in the reverse direction for a second preset time, and then the impeller 11 rotates in the forward direction again, and so on. Thus, the impeller assembly 1 has good applicability and can effectively utilize the rotation of the impeller 11, so that the clothes to be washed can be washed and tumbled regardless of whether the impeller 11 rotates in the forward or reverse direction, avoiding energy waste.

[0085] In some embodiments, such as Figure 1 and Figure 9 As shown, the impeller 11 also includes a first reinforcing ring 115, which can be formed into an annular structure. The first reinforcing ring 115 is disposed between the first drainage blade 112 and the second drainage blade 113. The radial inner end of the first drainage blade 112 is connected to the first reinforcing ring 115, and the radial outer end of the second drainage blade 113 is connected to the first reinforcing ring 115. The radial inner end of the second drainage blade 113 can be connected to the hub 111, which makes it easier for the impeller 11 to be better formed as a whole, ensuring the strength and stability of the overall structure of the impeller 11. At the same time, the setting of the first reinforcing ring 115 will not affect the first drainage blade 112 from draining water to the radial outer side of the hub 111.

[0086] For example, in Figure 1 and Figure 9In the example, the impeller 11 includes a pressure plate 114, a second drainage blade 113, and a first reinforcing ring 115. The second drainage blade 113 is disposed between the hub 111 and the first drainage blade 112. The pressure plate 114 is formed into a ring structure and is disposed at one axial end of the plurality of first drainage blades 112, for example, at one end of the plurality of first drainage blades 112 facing the impeller cover 12. The first reinforcing ring 115 is disposed between the first drainage blades 112 and the second drainage blades 113 to connect the plurality of first drainage blades 112 and the plurality of second drainage blades 113. The radial inner edge of the pressure plate 114 is connected to the first reinforcing ring 115, which helps to further improve the overall structural strength of the impeller 11.

[0087] In some embodiments, such as Figures 9-12 As shown, the impeller 11 has multiple sets of blade groups 11A, which are arranged radially along the hub 111. Each set of blade groups 11A includes at least one second drainage blade 113. The structures of the multiple sets of blade groups 11A can be the same or different, so the impeller 11 structure design is flexible and it is easy to realize the diversified design of the impeller 11.

[0088] It is understandable that when the blade assembly 11A includes multiple second drainage blades 113, the multiple second drainage blades 113 of the blade assembly 11A can be arranged at circumferential intervals along the hub 111.

[0089] In this case, the airflow directions of two adjacent sets of blades 11A are opposite. When the impeller 11 rotates, one set of the two adjacent sets of blades 11A discharges water to one axial side of the hub 111, while the other set discharges water to the other axial side of the hub 111. This causes the clothes to be washed to tumble along the radial direction of the hub 111 in the axial direction of the hub 111, ensuring that the water flow effectively disperses the clothes to be washed, preventing the clothes from tangling together, and further facilitating the achievement of virtually zero tangling of clothes.

[0090] It should be noted that the two sets of blades 11A have opposite flow directions. This can be understood as follows: when the impeller 11 rotates in the same direction, one set of the two sets of blades 11A discharges water from the other side of the axial direction of the impeller to the axial side of the hub 111, and the other set discharges water from the axial side of the hub 111 to the other side of the axial direction of the hub 111.

[0091] It is understandable that when there are two sets of blade groups 11A, the flow directions of the two sets of blade groups 11A are opposite. When there are three or more sets of blade groups 11A, the flow directions of any two adjacent sets of blade groups 11A are opposite, or the flow directions of any two or more adjacent sets of blade groups 11A are opposite. For example, taking three sets of blade groups 11A as an example, the three sets of blade groups 11A are, from the inside to the outside along the radial direction of the hub 111, the first blade group 11A, the second blade group 11A, and the third blade group 11A. The flow directions of any two adjacent sets of blade groups 11A are opposite. When the directions are opposite, the flow directions of the first blade group 11A and the second blade group 11A are opposite, and the flow directions of the third blade group 11A and the second blade group 11A are the same. Alternatively, the flow directions of the second blade group 11A and the third blade group 11A are opposite, and the flow directions of the first blade group 11A and the second blade group 11A are the same. When the flow directions of the three blade groups 11A are opposite, the flow directions of the first blade group 11A and the third blade group 11A are the same, and the flow directions of the first blade group 11A and the second blade group 11A are opposite.

[0092] Furthermore, the number of second drainage blades 113 in multiple blade groups 11A can be equal or different, the structure of the second drainage blades 113 in multiple blade groups 11A can be the same or different, and the number of second drainage blades 113 in blade group 11A can be equal or unequal to the number of first drainage blades 112. Of course, in Figures 1-4 In the example, blade group 11A can also be a group.

[0093] In some embodiments, such as Figures 5-8 As shown, there are multiple water passage sections 122, which can be arranged radially along the impeller cover 12. Each water passage section 122 corresponds to a set of blade groups 11A. Each water passage section 122 can be formed into a ring structure. An annular partition rib 125 is provided between two adjacent water passage sections 122 corresponding to two adjacent sets of blade groups 11A with opposite flow directions to separate the two adjacent water passage sections 122, so that the water flow discharged from the two adjacent sets of blade groups 11A has a certain degree of independence, ensuring the rinsing effect of the clothes to be washed.

[0094] It is understandable that the number of blade groups 11A and the water volume of the water passage 122 can be equal or unequal. For example, when there are multiple blade groups A, the water passage 122 can be one.

[0095] Optionally, in Figure 6 and Figure 8 In the example, the annular partition 125 can be provided on the side of the water passage 122 facing the impeller 11 (e.g., Figure 8(Lower side of the middle). Of course, the annular partition 125 can also be provided on the side of the water passage 122 away from the impeller 11; or, the side of the water passage 122 facing the impeller 11 and the side of the water passage 122 away from the impeller 11 are respectively provided with annular partition 125.

[0096] In some embodiments, such as Figures 9-12 As shown, the impeller 11 has multiple sets of blade groups 11A, which are arranged radially along the hub 111. Each set of blade groups 11A includes at least one second drainage blade 113. The impeller 11 also includes a second reinforcing ring 116, which is connected between two adjacent sets of blade groups 11A. There are one or more second reinforcing rings 116, which facilitates the impeller 11 to be formed as a whole.

[0097] It is understandable that when the impeller 11 includes a first reinforcing ring 115 and a second reinforcing ring 116, the second reinforcing ring 116 is located inside the first reinforcing ring 115, and the first reinforcing ring 115 is connected between the outermost blade group 11A and the first drainage blade 112.

[0098] In some embodiments of the present invention, such as Figure 6 and Figure 8 As shown, the cover portion 12A has a through opening 12A1, which can penetrate the cover portion 12A along its thickness direction. The shaft core portion 12B is located at the through opening 12A1 and is formed as a cylindrical structure 12C. The cylindrical structure 12C has a water passage hole 120, which is connected to the through opening 12A1. When the impeller 11 rotates, it can drive water to flow through the through opening 12A1 into the cylindrical structure 12C and spray it onto the clothes to be washed through the water passage hole 120 to achieve rinsing. Alternatively, the impeller 11 can drive water in the washing space 100b to flow through the water passage hole 120 into the cylindrical structure 12C and flow through the through opening 12A1 to the impeller 11. Obviously, regardless of the water flow method, water circulation can be achieved to rinse the clothes to be washed.

[0099] In some embodiments, such as Figure 5 , Figure 6 and Figure 8As shown, the water passage 120 of the cylindrical structure 12C includes at least one of a first nozzle 120a, a second nozzle 120b, and a third nozzle 120c. This includes several possible configurations: the water passage 120 of the cylindrical structure 12C may include only the first nozzle 120a, or the water passage 120 of the cylindrical structure 12C may include only the second nozzle 120b, or the water passage 120 of the cylindrical structure 12C may include only the third nozzle 120c, or the cylindrical structure... The water passage 120 of the cylindrical structure 12C may include a first nozzle 120a and a second nozzle 120b, or the water passage 120 of the cylindrical structure 12C may include a first nozzle 120a and a third nozzle 120c, or the water passage 120 of the cylindrical structure 12C may include a second nozzle 120b and a third nozzle 120c, or the water passage 120 of the cylindrical structure 12C may include a first nozzle 120a, a second nozzle 120b and a third nozzle 120c.

[0100] The first nozzle 120a is located at the upper end of the cylindrical structure 12C and is used to guide water to flow out along the axial direction of the cylindrical structure 12C to rinse the clothes to be washed. The second nozzle 120b is located at the upper part of the cylindrical structure 12C and is used to guide water to flow out in a direction inclined relative to the axial direction of the cylindrical structure 12C to rinse the clothes to be washed. The third nozzle 120c is located on the peripheral wall of the cylindrical structure 12C and is used to guide water to flow out along the axial direction of the cylindrical structure 12C to rinse the clothes. When the water passage hole 120 of the cylindrical structure 12C includes at least two of the first nozzle 120a, the second nozzle 120b and the third nozzle 120c, since the above at least two guide the water in different directions, it is convenient to realize multi-angle and diversified rinsing of the clothes to be washed.

[0101] It should be noted that, in the vertical direction, the upper part of the cylindrical structure 12C can extend to the part above the middle of the cylindrical structure 12C.

[0102] Furthermore, when the water passage 120 of the cylindrical structure 12C includes a first nozzle 120a, a second nozzle 120b, and a third nozzle 120c, the water sprayed from the first nozzle 120a, the second nozzle 120b, and the third nozzle 120c can operate independently. That is, the water sprayed from the first nozzle 120a will not block the water sprayed from the second nozzle 120b and the third nozzle 120c. Similarly, the water sprayed from the second nozzle 120b will not block the water sprayed from the first nozzle 120a and the third nozzle 120c, and the water sprayed from the third nozzle 120c will not block the water sprayed from the first nozzle 120a and the second nozzle 120b. This ensures that the water sprayed from each nozzle has sufficient water pressure, thus ensuring the rinsing effect of the water sprayed from the water passage 120 of the cylindrical structure 12C on the clothes to be washed.

[0103] Understandably, the water sprayed from the water passage 120 of the cylindrical structure 12C can have a certain rinsing effect on the clothes to be washed, so as to further prevent the clothes from tangling.

[0104] In some embodiments, such as Figure 5 , Figure 6 and Figure 8 As shown, the water passage 120 of the cylindrical structure 12C includes a first nozzle 120a, a second nozzle 120b, and a third nozzle 120c. The cylindrical structure 12C includes a first section 123 and a second section 124. The first section 123 is connected to the top of the second section 124. The first nozzle 120a is formed at the top of the first section 123 to ensure that the first nozzle 120a guides water to flow out along the axial direction of the cylindrical structure 12C. The second nozzle 120b is formed at the top of the second section 124, and the second... The nozzle 120b is located radially outside the first section 123, which facilitates the flow of water in a direction inclined relative to the axial direction of the cylindrical structure 12C. The third nozzle 120c is formed in the second section 124 and is located below the second nozzle 120b, which facilitates the flow of water guided by the third nozzle 120c in the circumferential direction of the cylindrical structure 12C. At the same time, it further ensures that the water sprayed from the first nozzle 120a, the second nozzle 120b and the third nozzle 120c can not interfere with each other.

[0105] In some specific embodiments of the present invention, such as Figure 5 and Figure 8 As shown, the first segment 123 is formed into a conical cylinder. The outer peripheral wall of the conical cylinder and the second segment 124 together define the second nozzle 120b. In the longitudinal section of the cylindrical structure 12C, since the outer peripheral wall of the conical cylinder is inclined relative to the axial direction of the cylindrical structure 12C, the outer peripheral wall of the conical cylinder can guide the water at the second nozzle 120b to a certain extent, further ensuring that the second nozzle 120b guides the water to flow out in the direction inclined relative to the axial direction of the cylindrical structure 12C. At the same time, due to the guiding effect of the outer peripheral wall of the conical cylinder, the setting requirements of the other wall surfaces of the second nozzle 120b can be reduced, thereby simplifying the setting of the second nozzle 120b.

[0106] In some embodiments of the present invention, such as Figure 5 and Figure 8 As shown, the cross-sectional area of ​​the lower end of the conical tube is smaller than that of the upper end of the conical tube, and the first nozzle 120a is formed at the top of the first section 123, which makes it easier to ensure that the first nozzle 120a has sufficient arrangement space. The lower part of the conical tube extends into the second section 124, which is beneficial to further enhance the guiding effect of the outer peripheral wall of the conical tube.

[0107] Alternatively, the upper end face of the conical cylinder can be formed as a plane or a curved surface.

[0108] Optionally, in Figure 5 and Figure 8 In the example, the cross-sectional area of ​​the lower end of the second segment 124 gradually increases downward, so that the lower end of the second segment 124 is roughly funnel-shaped, which facilitates the smooth transition and connection between the second segment 124 and the adjacent water passage part 122, and avoids the impeller cover 12 from abrading the clothes to be washed.

[0109] It is understood that if impeller assembly 1 includes impeller 11 and impeller shroud 12, then impeller assembly 1 may include... Figures 1-4 Impeller 11 and shown Figures 5-8 The impeller shroud 12 shown, or impeller assembly 1, includes Figures 9-12 Impeller 11 and shown Figures 5-8 The impeller cover 12 shown is not limited to this.

[0110] The garment handling apparatus 100 according to a second aspect of the present invention includes an impeller assembly 1 according to the first aspect of the present invention described above.

[0111] like Figures 13-15 As shown, the garment handling device 100 includes an outer drum 2, an inner drum 3, and an impeller assembly 1. The outer drum 2 defines a water-holding space, the inner drum 3 is rotatably disposed inside the outer drum 2, and the inner drum 3 defines a washing space 100b. The impeller assembly 1 is disposed at the bottom of the washing space 100b, and the impeller cover 12 is disposed above the impeller 11.

[0112] According to the embodiments of the present invention, the clothing handling apparatus 100, by employing the impeller assembly 1 described above, can prevent the clothes to be washed from tangling together, reduce clothing wear and tear, and improve the user experience.

[0113] For example, such as Figures 13-15 As shown, the clothing handling device 100 may further include a water spray plate 4, which is disposed on the inner wall of the inner drum 3 and defines a water passage space 100a with the inner drum 3. The water spray plate 4 has a water spray nozzle 40, and the water passage space 100a is connected to the washing space 100b through the water spray nozzle 40. The impeller cover 12 is connected to the water spray plate 4. At this time, the impeller 11 may include a first drainage blade 112. When the impeller 11 rotates, the first drainage blade 112 discharges water into the water passage space 100a. The water in the water passage space 100a can be sprayed out through the water spray nozzle 40 to rinse and disperse the clothes to be washed.

[0114] There can be one or more spray plates 4; when there are multiple spray plates 4, the multiple spray plates 4 can be arranged at intervals along the circumference of the inner cylinder 3.

[0115] The garment handling device 100 also includes a washing shaft 5, a spin-drying shaft 6, and a clutch 7. The hub 111 has a spline structure 111F, facilitating the connection between the washing shaft 5 and the spline structure 111F to drive the impeller 11 to rotate. The spin-drying shaft 6 is connected to the inner drum 3 to drive the inner drum 3 to rotate. The garment handling device 100 can have a washing mode and a spin-drying mode. In the washing mode, the impeller 11 rotates to wash the garments; in the spin-drying mode, the inner drum 3 rotates to dehydrate the garments. The clutch 7 can be used to control the power transmission between the spin-drying shaft 6 and the inner drum 3.

[0116] Optionally, the garment handling device 100 is a washing machine; of course, the type of garment handling device 100 is not limited to this, for example, the garment handling device 100 can also be a washer-dryer combo, etc.

[0117] Optionally, when the garment handling device 100 has a washing function, the control method of the garment handling device 100 may include: the garment handling device 100 is started, the impeller 11 rotates in the forward direction for a first predetermined time, and then rotates in the reverse direction for a second predetermined time, and so on, until the washing of the garment is completed.

[0118] Other configurations and operations of the garment processing apparatus 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0119] The following is for reference. Figures 1-12 The impeller assembly 1 according to an embodiment of the present invention is described in detail with reference to two specific embodiments. It is to be understood that the following description is merely illustrative and not intended to limit the invention in any specific way.

[0120] Example 1

[0121] In this embodiment, as Figures 1-4As shown, the impeller assembly 1 includes an impeller 11, which includes a hub 111, a first drainage blade 112, a second drainage blade 113, a pressure plate 114, and a first reinforcing ring 115. The second drainage blade 113 is disposed between the hub 111 and the first reinforcing ring 115. There are multiple second drainage blades 113, which are spaced apart circumferentially along the hub 111. There are multiple first drainage blades 112, which are all disposed radially outside the first reinforcing ring 115. The pressure plate 114 is formed into a ring structure and is disposed at the upper end of the multiple first drainage blades 112. When the impeller 11 rotates in the forward direction, for example, clockwise, the second drainage blade 113 discharges water to the upper side of the hub 111, the first drainage blade 112 discharges water to the radially outer side of the hub 111, and the pressure plate 114 guides the water to the radially outer side of the hub 111; when the impeller 11 rotates in the reverse direction, for example, counterclockwise, the second drainage blade 113 discharges water to the lower side of the hub 111, the first drainage blade 112 discharges water to the radially outer side of the hub 111, and the pressure plate 114 guides the water to the radially outer side of the hub 111.

[0122] For example, in Figure 1 In the example, there are twelve first drainage blades 112 and six second drainage blades 113.

[0123] like Figures 5-8 As shown, the impeller assembly 1 also includes an impeller cover 12, which includes a cover body portion 12A and a shaft core portion 12B. The cover body portion 12A is disposed above the impeller 11 to separate the impeller 11 from the clothes to be washed. The shaft core portion 12B is disposed in the middle of the upper side of the cover body portion 12A and extends along the axial direction of the impeller 11.

[0124] The cover portion 12A includes a water passage portion 122 and a water blocking portion 121. The water passage portion 122 is located above the hub 111 and the second drainage blade 113. A water passage hole 120 is formed on the water passage portion 122. The water blocking portion 121 is formed into an annular structure and is arranged around the water passage portion 122. The water blocking portion 121 blocks the upper side of the first drainage blade 112. The edge of the water blocking portion 121 has a water blocking edge 1211, which extends downward along the axial direction of the impeller cover 12. The edge of the water blocking portion 121 also has a mounting portion 1212, which can extend outward along the radial direction of the impeller cover 12 to facilitate the installation of the impeller cover 12.

[0125] There are two water passage sections 122, which are arranged in sequence along the radial direction of the impeller cover 12. Both water passage sections 122 are corresponding to the blade group 11A.

[0126] The cover portion 12A has a through opening 12A1. The shaft core portion 12B is blocked at the through opening 12A1 and is formed into a cylindrical structure 12C. The cylindrical structure 12C has a water passage 120, which communicates with the through opening 12A1. The water passage 120 of the cylindrical structure 12C includes a first nozzle 120a, a second nozzle 120b, and a third nozzle 120c. The first nozzle 120a is located in the cylindrical structure 12A1. The upper end of the cylindrical structure 122F has a first nozzle 120a for guiding water to flow out along the axial direction of the cylindrical structure 122F, a second nozzle 120b located at the upper part of the cylindrical structure 122F and for guiding water to flow out in a direction inclined relative to the axial direction of the cylindrical structure 122F, and a third nozzle 120c located on the peripheral wall of the cylindrical structure 122F and for guiding water to flow out circumferentially along the cylindrical structure 122F.

[0127] When the impeller 11 rotates clockwise, the blade assembly 11A discharges water towards the upper side of the hub 111. Driven by the blade assembly 11A, the water flows upward clockwise, thus pushing the clothes to tumble from bottom to top. At this time, the water passage hole 120 of the cylindrical structure 12C can spray water towards the clothes to be washed. When the impeller 11 rotates counterclockwise, the blade assembly 11A discharges water towards the lower side of the hub 111. Driven by the blade assembly 11A, the water flows downward counterclockwise, thus pushing the clothes to tumble from top to bottom. Regardless of whether the impeller 11 rotates clockwise or counterclockwise, the first drainage blade 112 discharges water into the water passage space 100a of the clothes handling device 100.

[0128] Example 2

[0129] like Figures 5-12 As shown, the structure of this embodiment is roughly the same as that of Embodiment 1, with the same reference numerals used for the same components. The difference is that the structure of the impeller 11 is different.

[0130] Specifically, such as Figures 9-12 As shown, the impeller 11 includes a hub 111, a first drainage blade 112, a second drainage blade 113, a pressure plate 114, a first reinforcing ring 115, and a second reinforcing ring 116. The multiple second drainage blades 113 include two sets of blade groups 11A, which are arranged radially along the hub 111. Each set of blade groups 11A includes multiple second drainage blades 113 spaced apart axially along the hub 111. The second reinforcing ring 116 connects the two sets of blade groups 11A, and the first reinforcing ring 115 connects the first drainage blade 112 and the outer blade group 11A.

[0131] In this design, the two sets of blades 11A have opposite flow directions. When the impeller 11 rotates counterclockwise, the inner blade set 11A discharges water towards the lower side of the hub 111, and the water flows counterclockwise downward under the drive of the inner blade set 112. The outer blade set 11A discharges water towards the upper side of the hub 111, and the water flows counterclockwise upward under the drive of the outer blade set 11A, thereby causing the clothes to tumble up and down from the outside to the inside. At this time, the water in the washing space 100b can pass through the water passage 1 of the cylindrical structure 12C. Water flows into the cylindrical structure 12C to participate in water circulation. When the impeller 11 rotates clockwise, the inner blade group 11A discharges water to the upper side of the hub 111, and the water flows upward clockwise under the drive of the inner blade group 11A. The outer blade group 11A discharges water to the lower side of the hub 111, and the water flows downward clockwise under the drive of the outer blade group 11A, thereby causing the clothes to tumble up and down from the inside to the outside. At this time, the water passage hole 120 of the cylindrical structure 12C can spray water towards the clothes to be washed. Regardless of whether the impeller 11 rotates clockwise or counterclockwise, the first drainage blade 112 discharges water to the water passage space 100a of the clothes handling device 100, and the pressure plate 114 guides the water to the radial outer side of the hub 111.

[0132] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0133] 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0134] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0135] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An impeller assembly, characterized by The impeller assembly is used in a laundry treating apparatus having a washing space, and comprises: an impeller including a hub, first drainage blades arranged at the hub and adapted to discharge water to a radially outer side of the hub when the impeller rotates, and second drainage blades arranged between the hub and the first drainage blades and adapted to discharge water to an axial side of the hub when the impeller rotates, the second drainage blades being configured to discharge water to one axial side of the hub when the impeller rotates in a forward direction and to the other axial side of the hub when the impeller rotates in a reverse direction, the impeller having a plurality of blade groups arranged in a radial direction of the hub, each of the blade groups including at least one of the second drainage blades, and adjacent two of the blade groups having opposite flow directions; an impeller cover covering the impeller to separate the impeller from laundry to be washed, the impeller cover being formed with a plurality of water passing holes and including a cover body and a shaft core arranged at a side of the cover body facing away from the hub, the shaft core being arranged corresponding to a central axis of the impeller and extending in an axial direction of the impeller, the cover body including a water passing portion located at one axial side of the hub and formed with the water passing holes, and a water blocking portion adapted to be connected to a water spraying plate of the laundry treating apparatus and to block at least one axial side of the first drainage blades, the shaft core being arranged at a side of the water passing portion facing away from the hub.

2. The impeller assembly of claim 1, wherein, The water blocking portion has a water blocking rim extending toward the impeller in an axial direction of the impeller cover.

3. The impeller assembly of claim 1, wherein, The impeller further includes a water pressing plate formed in an annular structure and arranged at an axial end of the first drainage blades to guide water to a radially outer side of the hub when the impeller rotates.

4. The impeller assembly of claim 1, wherein, The impeller further includes a first reinforcing ring arranged between the first drainage blades and the second drainage blades, a radially inner end of the first drainage blades being connected to the first reinforcing ring, and a radially outer end of the second drainage blades being connected to the first reinforcing ring.

5. The impeller assembly of claim 1, wherein, The water passing portion is a plurality of water passing portions, each of the water passing portions being arranged corresponding to one of the blade groups, and adjacent two of the water passing portions corresponding to the blade groups having opposite flow directions are arranged with an annular partition rib therebetween.

6. The impeller assembly of claim 1, wherein, The impeller has a plurality of blade groups arranged in a radial direction of the hub, each of the blade groups including at least one of the second drainage blades, and the impeller further includes a second reinforcing ring connected between adjacent two of the blade groups.

7. The impeller assembly of any one of claims 1-6, wherein, The cover body is formed with a through opening, the shaft core is arranged at the through opening and formed in a cylindrical structure, the cylindrical structure being formed with the water passing holes, and the water passing holes of the cylindrical structure being in communication with the through opening.

8. The impeller assembly of claim 7, wherein, The water passage of the cylindrical structure includes at least one of a first spout, a second spout and a third spout, the first spout is located at the upper end of the cylindrical structure and is used to guide water to flow out along the axial direction of the cylindrical structure, the second spout is located at the upper portion of the cylindrical structure and is used to guide water to flow out along a direction inclined relative to the axial direction of the cylindrical structure, and the third spout is located on the peripheral wall of the cylindrical structure and is used to guide water to flow out along the circumferential direction of the cylindrical structure.

9. The impeller assembly of claim 8, wherein, The water passage of the cylindrical structure includes a first spout, a second spout and a third spout, the cylindrical structure includes a first section and a second section, the first section is connected to the top end of the second section, the first spout is formed at the top end of the first section, the second spout is formed at the top end of the second section and is located radially outside the first section, and the third spout is formed on the second section and is located below the second spout.

10. The impeller assembly of claim 9, wherein, The first section is formed as a tapered cylinder, and the outer peripheral wall of the tapered cylinder cooperates with the second section to define the second spout. 11.A laundry treating apparatus, characterized by, It includes: an outer cylinder; an inner cylinder rotatably arranged in the outer cylinder and defining a washing space; a impeller assembly according to any one of claims 1-10, arranged at the bottom of the washing space, and the impeller cover is arranged above the impeller.

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