Pulsator assembly and washing machine

Abstract

The present invention belongs to the technical field of washing machines and discloses a pulsator assembly and a washing machine. The pulsator assembly includes: a first pulsator; a second pulsator disposed above the first pulsator; a connector for connecting the first pulsator and the second pulsator; the second pulsator is mounted on the connector so as to be relatively movable, and the second pulsator moves relative to the connector to approach or move away from the first pulsator. In the present invention, the first pulsator and the second pulsator are connected by the connector, and the second pulsator is movable relative to the connector. When the pulsator assembly is applied to a washing machine, the second pulsator can adjust its position in the inner tub so as to be positioned close to the water surface at different washing water levels. This allows the first pulsator and the second pulsator to simultaneously agitate the water from both the bottom and the top during the washing process, thereby enhancing the cleaning effect. At the same time, the second pulsator can also block the water flow to prevent splashing during the washing process.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing machines, and in particular relates to a pulsator assembly and a washing machine. Background Art

[0002] Traditional pulsator washing machines typically only have a pulsator at the bottom of the inner tub, and the washing function is primarily achieved through the rotation of this pulsator. Specifically, when the washing machine is in operation, the pulsator rotates at the bottom of the inner tub to stir the water flow at the bottom of the inner tub, causing the water flow to generate impact force and friction with the clothes. This also causes the clothes to tumble in the inner tub, creating friction between the clothes, thereby achieving the purpose of cleaning the clothes. Because the pulsator only stirs the water flow at the bottom of the inner tub, when there are many clothes in the inner tub and the washing water level is high, the washing water near the top of the inner tub is less stirred, resulting in less impact force generated by the water flow, resulting in less washing force on the clothes in the upper area. For some clothes with poor water absorption, they may float on the water surface throughout the washing process, making it more difficult to fully wash them.

[0003] On the other hand, during the wash cycle, wash water may splash onto the door of a pulsator washing machine due to the open inner drum. This splashing water may leave traces of detergent on the inside of the door, making it difficult for the user to clean up. If the amount of water splashing onto the door is large, the remaining water may drip into the washing machine's cabinet or onto the outside when the user opens the door.

[0004] Chinese patent application number 201910191473.7 discloses a dual-impeller assembly and a washing machine, wherein the dual-impeller assembly includes a lower impeller, the lower impeller being provided with a bottom washing surface; an upper impeller, the upper impeller being provided with a top washing surface, the bottom washing surface and the top washing surface being arranged opposite to each other; and a transmission shaft assembly, one end of the transmission shaft assembly being detachably connected to the lower impeller, and the other end being detachably connected to the upper impeller, and the lower impeller being transmission-connected to the upper impeller via the transmission shaft assembly.

[0005] However, in the above solution, the position of the upper pulsator is fixed. When the amount of laundry is small and the washing water level is significantly lower than the height of the upper pulsator, the upper pulsator cannot contact the washing water and cannot participate in the washing process. It can only rely on the lower pulsator to achieve the washing effect of a single pulsator.

[0006] In view of this, the present invention is proposed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a pulsator assembly and a washing machine, in which the second pulsator located above can be installed on a connecting part for relative movement, so that it can maintain a height close to the water surface at different washing water levels. For different washing water levels, the purpose of stirring the water flow from the bottom and top of the washing water at the same time can be achieved, which can enhance the washing effect of clothes.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0009] A pulsator assembly, comprising:

[0010] First wave;

[0011] a second impeller, arranged above the first impeller;

[0012] a connecting member, used for connecting the first impeller and the second impeller;

[0013] The second pulsator is mounted on the connecting member so as to be relatively movable. The second pulsator moves relative to the connecting member to approach or move away from the first pulsator.

[0014] Furthermore, the connecting member extends a certain length in a direction parallel to the rotation axis of the first impeller, and the lower end of the connecting member is connected to the first impeller; the second impeller is slidably mounted on the connecting member along the rotation axis of the first impeller;

[0015] Preferably, the connecting member is coaxially arranged with the first impeller and rotates synchronously with the first impeller.

[0016] Furthermore, the upper end of the connecting member is provided with a connecting portion extending a certain length along its axial direction; a mounting hole is provided at the center of the second impeller, and the second impeller can be slidably mounted on the connecting portion through the mounting hole.

[0017] Furthermore, a limiting protrusion / limiting recess is provided on the side of the connecting part, and a limiting recess / limiting protrusion is provided on the inner wall of the mounting hole; the limiting protrusion and the limiting recess are installed in coordination, and the second impeller rotates synchronously with the connecting part under the drive of the connecting part.

[0018] Furthermore, the side surface of the connecting portion is provided with at least one ridge extending along the axial direction of the connecting piece; the inner wall of the mounting hole is provided with a groove, and the ridges are arranged in a one-to-one correspondence in the groove of the inner wall of the mounting hole;

[0019] Alternatively, the side surface of the connecting portion is provided with at least one groove extending along the axial direction of the connecting piece; the inner wall of the mounting hole is provided with a protrusion, and the protrusions are arranged in a one-to-one correspondence in the grooves on the side surface of the connecting portion;

[0020] Alternatively, an external spline is provided on the side surface of the connecting portion, and an internal spline matching the external spline is provided on the inner wall of the mounting hole.

[0021] Furthermore, a limiting device is provided on the connecting portion, and the limiting device is installed above the second impeller to limit the highest sliding position of the second impeller;

[0022] Preferably, the limiting device is movably mounted on the connecting portion and comprises:

[0023] a limiting portion protruding from a side surface of the connecting portion to limit the second impeller;

[0024] The fastening portion fixes the relative positions of the limiting portion and the connecting portion.

[0025] Furthermore, a weight adjustment device capable of adjusting the weight is provided on the second impeller.

[0026] Furthermore, the weight adjustment device includes a liquid storage device having a liquid storage cavity therein, and a water inlet is provided on the liquid storage device;

[0027] Preferably, the liquid storage device is an annular structure coaxially arranged with the second impeller;

[0028] Preferably, the liquid storage device is arranged on the surface of the second impeller facing away from the first impeller.

[0029] Another object of the present invention is to provide a washing machine comprising the pulsator assembly described above.

[0030] Furthermore, it also includes an inner tub, wherein the first impeller is rotatably disposed at the bottom of the inner tub;

[0031] Preferably, the connecting piece is coaxially arranged with the inner barrel.

[0032] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0033] In the pulsator assembly of the present invention, the second pulsator is mounted on a connecting member so as to be relatively movable, and can be moved closer to or further away from the first pulsator located below. When used in a washing machine, the user can adjust the second pulsator to a position close to the water surface according to the amount of laundry to be washed and the desired water level. Regardless of the washing water level, the first and second pulsators can simultaneously stir the washing water, thereby enhancing the washing force and improving the cleanliness of the clothes. Furthermore, the second pulsator, located at the water surface level, can shield the washing water, effectively preventing splashing during the washing process.

[0034] In the pulsator assembly of the present invention, a matching circumferential limit structure is provided on the connecting portion of the connector and the mounting hole of the second pulsator, thereby effectively driving the second pulsator to rotate synchronously via the connector. The connector itself is connected to the first pulsator and rotates synchronously with it. When used in a washing machine, only one set of driving devices is required to drive the first pulsator to rotate, thereby achieving synchronous rotation of the first and second pulsators within the inner tub, without the need to drive the first and second pulsators separately, which helps simplify the internal structure of the washing machine.

[0035] In the pulsator assembly of the present invention, a weight adjustment device is provided on the second pulsator. By adjusting the weight of the weight adjustment device, the second pulsator can press the laundry into the water while maintaining the height above the water level during the washing process. This ensures a good washing effect without damaging the laundry and more effectively prevents water splashing during the washing process. The weight adjustment device is configured as a ring-shaped liquid storage device, which is adjusted by injecting liquid. It also balances the inertial force during the rotation of the second pulsator, preventing eccentric rotation of the second pulsator and maintaining stable rotation of the second pulsator.

[0036] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0038] Figure 1 This is a schematic structural diagram of an embodiment of the present invention in which the impeller assembly is installed in the inner tub;

[0039] Figure 2 This is a front view of the impeller assembly installed in the inner tub in an embodiment of the present invention;

[0040] Figure 3 is a schematic structural diagram of a connecting member in an embodiment of the present invention;

[0041] Figure 4 is a top view of the second impeller in an embodiment of the present invention;

[0042] Figure 5 2. It is a bottom view of the second impeller in the embodiment of the present invention.

[0043] In the figure: 110, barrel bottom; 120, filter housing; 130, balance ring; 200, first impeller; 201, first stirring rib; 300, connecting piece; 310, first connecting part; 311, first groove; 320, second connecting part; 321, second groove; 400, second impeller; 401, second stirring rib; 410, mounting hole; 411, protrusion; 500, liquid storage device; 501, water inlet.

[0044] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0045] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0046] In the description of the present invention, it should be noted that the terms "upper", "lower", "vertical", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0047] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0048] like Figures 1 to 5 As shown, a pulsator assembly of the present invention includes:

[0049] First wave wheel 200;

[0050] The second pulsator 400 is arranged above the first pulsator 200;

[0051] The connecting member 300 is used to connect the first pulsator 200 and the second pulsator 400 .

[0052] The second pulsator 400 is mounted on the connecting member 300 so as to be relatively movable. The second pulsator 400 moves relative to the connecting member 300 to approach or move away from the first pulsator 200 .

[0053] The pulsator assembly can be used in a washing machine, specifically installed within the inner tub. The relative position of the second pulsator 400 on the connector 300 can be adjusted based on the actual laundry load and the wash water level, so that it is positioned close to the water surface. During the wash cycle, the first pulsator 200 rotates at the bottom of the inner tub, while the second pulsator 400 rotates at the top of the wash water. This agitates the wash water from both the bottom and top, thereby enhancing the impact of the water flow and improving the washing effect. Furthermore, the second pulsator 400 shields the wash water from the top, preventing it from splashing.

[0054] As a preferred embodiment of the present invention, the connecting member 300 is a rod-shaped structure coaxially arranged with the inner barrel, and its lower end is fixedly connected to the first pulsator 200, or is connected through a circumferential limiting structure, so that the connecting member 300 rotates synchronously with the first pulsator 200. There is also a circumferential limiting structure between the upper end of the connecting member 300 and the second pulsator 400, and the rotation of the connecting member 300 can drive the second pulsator 400 to rotate synchronously.

[0055] The impeller assembly of the above structure is used in a washing machine. The first impeller 200 is driven to rotate by a driving device, and then the second impeller 400 is driven by the connecting member 300 to rotate synchronously with the first impeller 200 in the inner barrel, stirring the washing water from the top and bottom at the same time, and the structure is simple.

[0056] As a preferred embodiment of the present invention, the second pulsator 400 is equipped with a weight adjustment device. Before starting the wash cycle, the user can adjust the weight of the weight adjustment device to change the overall weight of the second pulsator 400, allowing the laundry to be fully submerged below the water surface, ensuring adequate wetting. Furthermore, by varying the overall weight of the second pulsator 400 to accommodate varying water levels and speeds, the second pulsator 400 can be made to float at a consistent height under varying wash conditions. This ensures agitation of the wash water without damaging the laundry, ensuring excellent washing results and effectively preventing splashing during the wash cycle.

[0057] Example 1

[0058] like Figures 1 to 5 As shown, this embodiment provides a pulsator assembly and a washing machine including the pulsator assembly.

[0059] Specifically, the pulsator assembly includes:

[0060] First wave wheel 200;

[0061] The second pulsator 400 is arranged above the first pulsator 200;

[0062] The connecting member 300 is used to connect the first pulsator 200 and the second pulsator 400 .

[0063] The second pulsator 400 is mounted on the connecting member 300 so as to be relatively movable. The second pulsator 400 moves relative to the connecting member 300 to approach or move away from the first pulsator 200 .

[0064] The washing machine of this embodiment specifically comprises an inner tub and the above-mentioned pulsator assembly arranged inside the inner tub. Among them, the first pulsator 200 is rotatably arranged at the bottom of the inner tub.

[0065] In this embodiment, first agitating ribs 201 are provided on the upper surface of the first pulsator 200, and second agitating ribs 401 are provided on the lower surface of the second pulsator 400. The mounting position of the second pulsator 400 on the connector 300 is adjustable, and the mounting height of the second pulsator 400 can be adjusted according to the actual wash water level during washing, so that the second agitating ribs 401 are submerged below the water surface.

[0066] When the washing machine is working, the first pulsator 200 and the second pulsator 400 rotate and stir the washing water in the bottom area and the top area of ​​the washing water respectively, so that the washing water in the inner barrel can be fully stirred, thereby strengthening the impact of the washing water flow on the clothes, increasing the washing force, and improving the washing effect.

[0067] On the other hand, before starting washing, the second impeller 400 is adjusted to a position close to the water surface height, which can shield the washing water from above during the washing process, preventing the washing water in the inner barrel from splashing out from the barrel mouth of the inner barrel, effectively solving the problem of washing water splashing during the washing process.

[0068] In this embodiment, the inner tub includes a tub wall (not shown) and a tub bottom 110. A balance ring 130 is provided at the tub opening. Two filter housings 120 are symmetrically positioned on the tub wall, forming a filter chamber with the tub wall. These filter housings 120 filter out lint from the water during the washing process, preventing excessive lint from affecting the washing effect.

[0069] In a further embodiment of the present invention, the connecting member 300 extends a certain length in a direction parallel to the rotation axis of the first pulsator 200, and the lower end of the connecting member 300 is connected to the first pulsator 200. The second pulsator 400 is slidably mounted on the connecting member 300 along the rotation axis of the first pulsator 200.

[0070] Preferably, the connecting member 300 is coaxially arranged with the first pulsator 200 and rotates synchronously with the first pulsator 200 .

[0071] In the above solution, the connecting member 300 is a rod-shaped structure coaxially arranged with the first pulsator 200 and rotates synchronously with the first pulsator 200. Furthermore, in addition to connecting the first pulsator 200 and the second pulsator 400, the connecting member 300 also serves as a transmission structure between the first pulsator 200 and the second pulsator 400. By designing the connection structure between the second pulsator 400 and the connecting member 300 and limiting the relative rotation between the two, it is possible to achieve the purpose of having a single drive motor drive the first pulsator 200, which in turn drives the second pulsator 400 synchronously via the connecting member 300. This eliminates the need to drive the first pulsator 200 and the second pulsator 400 separately during operation, simplifying the structure of the washing machine's internal drive mechanism.

[0072] When the pulsator assembly is installed inside the inner tub of the washing machine, the connector 300 is coaxially arranged with the inner tub. The first pulsator 200 is driven by a driving motor to rotate at the bottom of the inner tub, thereby achieving the effect of synchronous rotation of the first pulsator 200 and the second pulsator 400 inside the inner tub.

[0073] Specifically, the connecting member 300 of this embodiment can be fixedly connected to the first impeller 200, so as to achieve synchronous rotation of the two.

[0074] In another embodiment of the present invention, a first connecting portion 310 is provided at the lower end of the connecting member 300, and a plurality of first grooves 311 are provided on the side of the first connecting portion 310. A concave mounting cavity is provided at the center of the first impeller 200, and a plurality of protrusions are provided on the inner wall of the surrounding side of the mounting cavity. The first connecting portion 310 is inserted into the mounting cavity, and the protrusions are embedded in the first grooves 311 in a one-to-one correspondence.

[0075] The protrusion cooperates with the first groove 311 to limit the relative rotation between the first impeller 200 and the connecting member 300. When the first impeller 200 is driven to rotate, the protrusion cooperates with the first groove 311 to drive the connecting member 300 to rotate synchronously.

[0076] The setting positions of the protrusions and recessed structures can also be swapped, that is, multiple protrusions are set on the side of the first connecting part, and multiple grooves are set on the peripheral side walls of the installation cavity. The first connecting part is inserted into the installation cavity so that the protrusions on the first connecting part are embedded in the grooves in the installation cavity one by one.

[0077] Alternatively, an external spline may be provided on the side of the first connecting portion, and an internal spline matching the external spline may be provided on the inner wall of the peripheral side of the mounting cavity. The first impeller and the connecting member may be connected by a spline, so that the first impeller can drive the connecting member to rotate synchronously.

[0078] In a further embodiment of the present invention, a second connecting portion 320 extending axially along a certain length is provided at the upper end of the connecting member 300. A mounting hole 410 is provided at the center of the second pulsator 400, and the second pulsator 400 is slidably mounted on the second connecting portion 320 through the mounting hole 410.

[0079] The second pulsator 400 is detachably connected to the connecting member 300. To use the washing machine, the user first places the laundry into the inner tub. Then, aligning the mounting hole 410 of the second pulsator 400 with the upper end of the second connecting portion 320, the second pulsator 400 is attached to the connecting member 300. The second pulsator 400 can be installed before or after the washing machine is filled with water. After the water is filled, the second pulsator 400 is adjusted up or down according to the actual situation, so that the second agitating ribs 401 are submerged below the water surface, and the washing process can begin. After washing, the user removes the second pulsator 400 from the connecting member 300 to remove the washed laundry from the inner tub.

[0080] To enable the connecting member 300 to drive the second impeller 400 to rotate, in this embodiment, a limiting protrusion is provided on the side of the second connecting portion 320, and a limiting recess is provided on the inner wall of the mounting hole 410. The limiting protrusion and the limiting recess are installed in conjunction with each other, so that the second impeller 400 rotates synchronously with the connecting member 300 under the drive of the connecting member 300.

[0081] Alternatively, the positions of the limiting protrusion and the limiting recess can also be swapped, that is, the limiting recess is set on the side of the second connecting part 320, and the limiting protrusion is set on the inner wall of the mounting hole 410, which can also achieve the same purpose.

[0082] Furthermore, at least one ridge extending along the axial direction of the connecting piece is provided on the side surface of the second connecting portion, and a groove is provided on the inner wall of the mounting hole. The ridges are slidably arranged in the groove on the inner wall of the mounting hole in a one-to-one correspondence.

[0083] In another embodiment, at least one second groove 321 extending along the axial direction of the connector 300 is provided on the side surface of the second connecting portion 320, and a protrusion 411 is provided on the inner wall of the mounting hole 410. The protrusions 411 are disposed in a one-to-one correspondence with the second grooves 321 on the side surface of the second connecting portion 320 and can slide along the second grooves 321.

[0084] Alternatively, the second impeller 400 and the connecting member 300 may also be connected in a spline manner, that is, an external spline is provided on the side of the second connecting portion, and an internal spline matching the external spline is provided on the inner wall of the mounting hole.

[0085] The above solutions can realize the synchronous rotation between the second pulsator 400 and the connecting member 300, and the vertical sliding of the second pulsator 400 on the connecting member 300, thereby adjusting the installation height of the second pulsator 400. The connection structure between the second pulsator 400 and the connecting member 300 is simple and easy to process.

[0086] In this embodiment, the pulsator assembly is equipped with a first pulsator 200 and a second pulsator 400, which are arranged vertically and connected by a connector 300. The first pulsator 200 is fixed relative to the connector 300, while the second pulsator 400 can slide up and down along the connector 300. When this pulsator assembly is used in a washing machine, the second pulsator 400 can move up and down within the inner tub. Before the washing machine starts washing, the user can adjust the installation position of the second pulsator 400 to a height close to the water surface.

[0087] During the wash process, the washing machine's drive motor drives the first pulsator 200, which in turn drives the second pulsator 400 through the connector 300. The second pulsator 400 slides along the connector 300, remaining afloat due to the water flow and rotational inertia. The second agitating ribs 401 on its lower surface stir the wash water, increasing the impact of the water flow in the top area and enhancing the washing effect. Furthermore, the second pulsator 400 effectively prevents water splashing during the wash cycle, improving the user experience.

[0088] Example 2

[0089] This embodiment is a further limitation of the above-mentioned embodiment 1, in which a limiting device is provided on the connecting portion, and the limiting device is installed above the second impeller to limit the highest sliding position of the second impeller.

[0090] During the washing process, especially when the washing speed is high and the second impeller itself is light, the second impeller may slide upward along the connecting part for a large distance during rotation, resulting in a reduction in the part of the second stirring rib submerged in the water, or even complete separation from the washing water, thereby weakening the stirring effect on the washing water and failing to generate effective friction with the clothes to achieve the ideal cleaning effect.

[0091] In this embodiment, a limiting device is provided on the connecting portion to limit the position of the second pulsator. This limits the maximum position the second pulsator can reach when sliding on the connecting portion. That is, during the washing process, the second pulsator can only slide freely within a range on the connecting portion below the limiting device. Providing the limiting device at an appropriate height on the connecting portion prevents the second pulsator from sliding upward too far, thereby preventing the wash water from being effectively agitated.

[0092] In the preferred solution of this embodiment, the setting height of the limiting device on the connecting part is adjustable, so that the specific setting height of the limiting device can be adjusted according to different washing water levels, thereby effectively blocking the second impeller and preventing it from sliding upward and out of the water surface.

[0093] Specifically, the limiting device is movably mounted on the connecting portion and includes:

[0094] a limiting portion protruding from a side surface of the connecting portion to limit the second impeller;

[0095] The fastening portion fixes the relative positions of the limiting portion and the connecting portion.

[0096] During use, the user adjusts the stopper to the appropriate installation height on the connection part according to the actual wash water level, and then secures the stopper with the fastening part to prevent it from moving up and down on the connection part, effectively limiting the position of the second impeller during the washing process. Depending on the actual wash water level, the user can adjust the stopper to different heights on the connection part, so that the second impeller will not slide up and out of the water at different wash water levels.

[0097] For example, the retaining portion can be a snap ring that fits over the connecting portion and has a notch. The notch extends outward from the snap ring on either side and is connected by screws to form a fastening portion. When the snap ring is loose, it can move freely on the connecting portion. By adjusting the screws, the notch is gradually reduced, causing the snap ring to gradually contract until it grips the connecting portion, at which point the snap ring is fixed and cannot be moved.

[0098] In this embodiment, a limit device is provided on the connecting portion to limit the range within which the second impeller can freely slide, thereby preventing the second impeller from sliding upward too far and thereby detaching from the water surface, thereby failing to function effectively. The structural design of the limit device allows the user to adjust the installation height of the limit device according to different washing water levels. That is, at different washing water levels, different sliding ranges of the second impeller can be defined. Especially at low water levels, this can more effectively prevent the second impeller from detaching from the water surface.

[0099] Example 3

[0100] like Figures 1 to 5 As shown, this embodiment is a further limitation of the above-mentioned embodiment 1, in which a weight adjustment device is provided on the second pulsator 400. The user can adjust the weight of the weight adjustment device to adjust the overall weight of the second pulsator 400. Especially when the laundry is poorly soaked in water, the second pulsator 400 can be made to have sufficient weight to completely press the laundry into the water, ensuring that the laundry is fully soaked.

[0101] At the same time, according to different washing speeds and washing water conditions, the overall weight of the second pulsator 400 is adjusted to an appropriate level, which can also ensure that the second pulsator 400 floats stably at the water level throughout the entire washing process, avoiding the second pulsator 400 from falling off the water due to being too light or sinking to the bottom of the water due to being too heavy, thereby ensuring the effect of the second pulsator 400.

[0102] In this embodiment, the weight adjustment device includes a liquid storage device 500 having a liquid storage chamber therein. A water inlet 501 is provided on the liquid storage device 500. The user can add water to the liquid storage device 500 through the water inlet 501 to increase the weight of the second pulsator 400. After the washing machine is finished operating, the water inlet 501 also serves as a liquid outlet, allowing the water in the liquid storage chamber to be poured out through the water inlet 501.

[0103] In this embodiment, the liquid storage device 500 is disposed on the upper surface of the second pulsator 400. Since the second stirring ribs 401 are disposed on the lower surface of the second pulsator 400 for stirring the wash water, the liquid storage device 500 is disposed on the upper surface to prevent interference with the structure of the second stirring ribs 401.

[0104] In a preferred embodiment of the present invention, the liquid storage device 500 is an annular structure coaxially arranged with the second pulsator 400 and disposed in the peripheral area of ​​the upper surface of the second pulsator 400. The structure of the liquid storage device 500 is similar to the balance ring 130 at the mouth of the inner barrel and can also play a similar role. That is, during the rotation of the second pulsator 400, the inertia of the water in the liquid storage device 500 can buffer the inertia of the second pulsator 400, prevent the second pulsator 400 from rotating eccentrically, and maintain stable rotation of the second pulsator 400.

[0105] In this embodiment, the water inlet 501 may also be connected to the water inlet pipe of the washing machine, and water may be injected into the liquid storage device 500 through the water inlet pipe of the washing machine.

[0106] In a further embodiment of the present invention, a water outlet is provided on the liquid storage device 500, which is connected to the interior of the inner tub. After the washing machine is finished, the user does not need to manually pour out the water in the liquid storage device 500. Instead, the user can simply open the water outlet to drain the water in the liquid storage device 500 into the inner tub and then out of the washing machine, making operation more convenient.

[0107] In the above solution, the water inlet 501 on the liquid storage device 500 can be directly connected to the washing machine's water inlet valve via a pipe. When the washing machine is receiving water, the water inlet 501 and water outlet of the liquid storage device 500 are simultaneously opened, the water inlet valve is opened, and water is poured into the inner tub through the water inlet 501 and water outlet of the liquid storage device 500. After reaching the set water level, the water outlet of the liquid storage device 500 is closed, while the water inlet valve remains open. A certain amount of water is then added to the liquid storage device 500, depending on the actual situation. Once the second pulsator 400 reaches the desired weight, the water inlet valve is closed. The water inlet 501 is then closed, and the pipe connected to the water inlet 501 is removed, and the washing process can begin. After the washing process is complete, the water in the liquid storage device 500 is opened, and the water outlet is drained into the inner tub and then discharged through the washing machine's drainage system.

[0108] In this embodiment, a liquid storage device 500 is provided on the second pulsator 400 as a weight adjustment device. By filling the liquid storage device 500 with water, the overall mass of the second pulsator 400 can be adjusted. The second pulsator 400 can be adjusted to the appropriate weight for different washing conditions, allowing it to fully press the laundry into the water while also allowing it to float with the water flow during the wash cycle, maintaining a stable height above the water surface. This ensures effective agitation of the wash water without damaging the laundry, achieving excellent washing results and more effectively preventing splashing during the wash process.

[0109] Example 4

[0110] The difference between this embodiment and the above-mentioned embodiment 3 is that the weight adjustment device is a detachable counterweight block installed on the upper surface of the second impeller.

[0111] Specifically, the upper surface of the second pulsator is provided with a plurality of concave accommodating cavities evenly distributed along the circumference of the second pulsator. When using the washing machine, the user can select an appropriate number of counterweights based on actual conditions and select symmetrically positioned accommodating cavities to prevent the second pulsator from weighing the appropriate amount.

[0112] In this embodiment, the counterweight block can also be configured as a ring-shaped counterweight ring. Positioning holes are provided on the upper surface of the second impeller, and corresponding raised structures are provided on the lower surface of the counterweight ring. The raised structures are inserted into the corresponding positioning holes to secure the counterweight ring to the second impeller. Positioning holes are also provided on the upper surface of the counterweight ring, allowing multiple counterweight rings to be stacked and secured. Users can select the appropriate number of counterweight rings to install on the second impeller based on their actual laundry needs, thereby adjusting the weight of the second impeller.

[0113] A counterweight ring is placed on the second impeller to adjust the mass of the second impeller, which is more conducive to the uniform distribution of the overall weight of the second impeller, avoids the eccentric rotation of the second impeller, and ensures that the second impeller can rotate stably.

[0114] In this embodiment, a counterweight block or a counterweight ring is used as the weight adjustment device. The user can adjust the overall weight of the second impeller by placing or removing the counterweight block or the counterweight ring on the second impeller, which is easy to operate.

[0115] Example 5

[0116] This embodiment differs from the first embodiment described above in that an axial retaining structure is provided on the upper end of the connecting member to prevent the second impeller from sliding upward and being dislodged from the upper end of the connecting member. The provision of the axial retaining structure prevents the second impeller from being thrown out of the upper end of the connecting member during operation of the washing machine, thereby making the overall structure of the impeller assembly more reliable.

[0117] In this embodiment, the second pulsator is always mounted on the connector, eliminating the need for manual installation by the user each time the washing machine is used. However, since the second pulsator obstructs the interior of the inner tub, a clothing access opening is provided on the second pulsator to facilitate loading and unloading of clothing, and a door cover is also provided to open and close the clothing access opening.

[0118] Furthermore, the axial limiting structure and the connecting member may be detachably connected. For small items of clothing, the user can open the door at the clothing access opening and place the clothing into the inner drum through the access opening. For larger items of clothing that cannot fit through the access opening, the user can remove the axial limiting structure from the upper end of the connecting member and then remove the second impeller from the connecting member, thereby allowing the larger items to be placed into the inner drum.

[0119] In another embodiment, the second pulsator can be configured as a foldable structure, comprising a fixed portion mounted on a connector and a folding portion rotatably connected to the fixed portion. Before starting a wash cycle, the user folds the folding portion upward or downward so that it no longer obstructs the space below, allowing the user to place the laundry into the inner tub. The folding portion is then rotated back to align with the fixed portion, allowing the washing machine to run the wash cycle and begin washing the laundry. After the wash cycle is complete, the user folds the folding portion again to remove the washed laundry.

[0120] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A pulsator assembly, comprising: First wave; a second impeller, arranged above the first impeller; a connecting member, used for connecting the first impeller and the second impeller; The invention is characterized in that the second pulsator is mounted on the connecting member so as to be relatively movable, and the second pulsator moves relative to the connecting member toward or away from the first pulsator; The connecting member extends a certain length in a direction parallel to the rotation axis of the first impeller, and has a connecting portion extending a certain length along its axial direction at its upper end; a mounting hole is defined at the center of the second impeller, and the second impeller is slidably mounted on the connecting portion through the mounting hole; The side surface of the connecting portion is provided with at least one ridge extending along the axial direction of the connecting piece, the inner wall of the mounting hole is provided with a groove, and the ridge is arranged in a one-to-one correspondence in the groove of the inner wall of the mounting hole; or the side surface of the connecting portion is provided with at least one groove extending along the axial direction of the connecting piece, the inner wall of the mounting hole is provided with a convex head, and the convex head is arranged in a one-to-one correspondence in the groove of the side surface of the connecting portion; or the side surface of the connecting portion is provided with an external spline, and the inner wall of the mounting hole is provided with an internal spline matching the external spline; The second impeller is provided with a liquid storage device having a liquid storage cavity therein, for adjusting the overall weight of the second impeller; During the washing process, the second impeller can slide up and down along the connecting piece and keep floating on the water surface in the inner tub.

2. The impeller assembly according to claim 1, characterized in that: The lower end of the connecting member is connected to the first impeller.

3. The impeller assembly according to claim 2, characterized in that: The connecting member is coaxially arranged with the first impeller and rotates synchronously with the first impeller.

4. The impeller assembly according to claim 1, characterized in that: A limiting protrusion / limiting recess is provided on the side of the connecting portion, and a limiting recess / limiting protrusion is provided on the inner wall of the mounting hole; the limiting protrusion and the limiting recess are installed in coordination, and the second impeller rotates synchronously with the connecting member under the drive of the connecting member.

5. The impeller assembly according to any one of claims 1 to 4, characterized in that: A limiting device is provided on the connecting portion, and the limiting device is installed above the second impeller to limit the highest sliding position of the second impeller.

6. The impeller assembly according to claim 5, characterized in that: The limiting device is movably mounted on the connecting portion and includes: a limiting portion protruding from a side surface of the connecting portion to limit the second impeller; The fastening portion fixes the relative positions of the limiting portion and the connecting portion.

7. The impeller assembly according to any one of claims 1 to 4, characterized in that: The liquid storage device is provided with a water inlet.

8. The impeller assembly according to any one of claims 1 to 4, characterized in that: The liquid storage device is an annular structure coaxially arranged with the second impeller.

9. The impeller assembly according to any one of claims 1 to 4, characterized in that: The liquid storage device is arranged on the surface of the second impeller facing away from the first impeller.

10. A washing machine, characterized in that: A pulsator assembly comprising any one of claims 1-9.

11. The washing machine according to claim 10, characterized in that It also includes an inner barrel, and the first impeller is rotatably arranged at the bottom of the inner barrel.

12. The washing machine according to claim 11, characterized in that The connecting piece is coaxially arranged with the inner barrel.

Images