A pulsator assembly and a washing machine

Abstract

The application discloses a pulsator assembly and a washing machine, the pulsator assembly comprises a pulsator and a thread scrap filter, the thread scrap filter is arranged at the bottom of the pulsator, a water passing hole is arranged on the pulsator, and the water passing hole cooperates with the thread scrap filter to form a filter channel. The pulsator assembly provided by the application is more convenient to collect thread scrap into the thread scrap filter by arranging the water passing hole on the pulsator and utilizing the centrifugal force generated by the rotation of the pulsator, and the collection efficiency of the thread scrap is improved.

Description

Technical Field

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

[0002] Most lint filters in existing pulsator washing machines are located on the inner wall of the inner tub. This not only occupies part of the tub's volume, but also, since the lint filter is usually fixed to the filter frame on the inner tub using clips, in some cases, clothes may be scratched by the filter or the filter may be torn off by the clothes.

[0003] For example, Chinese Patent Application No. 200510075325.7 discloses a lint filtration system for twin-tub and single-tub washing machines, including a washing tub for containing washing water; an impeller installed at the bottom of the washing tub, dividing the washing tub into a washing trough above the impeller and a pump chamber below the impeller; and a lint filter device installed on the side wall of the washing tub. The lint filtration system further includes a filter channel with an inlet leading to the pump chamber and an outlet leading to the lint filter device. Ribs integrally formed with the impeller are provided on the lower side of the impeller, and the pump chamber is connected to the lint filter device through the filter channel. The washing machine in this patent uses a bottom-inlet method to filter lint. Because the water channel and pump chamber are located at the bottom of the washing tub, the internal volume of the washing tub is reduced, and the water channel and pump chamber are prone to deformation during the injection molding process of the washing tub, ultimately making it difficult to control the dimensions of the bottom of the washing tub.

[0004] For example, Chinese patent application number 201920543701.8 discloses a lint filter, a pulsator assembly, and a washing machine. The lint filter is installed inside the pulsator and includes a filter screen. The filter body has a filter groove, and the filter groove has a filter outlet. The filter outlet connects to the outside of the pulsator, and the filter screen covers the filter outlet. The washing machine's pulsator includes a pulsator body and a rotating base. The filter body and the rotating base are both located inside the pulsator body, and the rotating base covers the filter groove. The inside of the pulsator body, the rotating base, the filter groove, the filter outlet, and the outside of the pulsator body are sequentially connected to form a drainage channel. Although this patent installs the lint filter on the pulsator, and the pulsator rotation drives the lint filter to complete the filtration function, the water flow in this patent enters the lint filter from the bottom of the pulsator, filters out lint and other debris, and then the water is discharged from the drainage channel to the top of the pulsator. Since most lint is located at the top of the impeller, the patented lint filter can only collect a small amount of lint from the bottom of the impeller. Furthermore, when the washing machine is running, water in the inner tub will also enter from the drain port on the impeller due to centrifugal force. This will create mutual obstruction with the water flow inside the lint filter, which is not conducive to the collection of lint.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art. On the one hand, the present invention provides a pulsator assembly that improves the efficiency of lint collection.

[0007] In another aspect, the present invention provides a washing machine having the above-described impeller assembly.

[0008] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0009] The present invention provides a pulsator assembly, including a pulsator and a lint filter, wherein the lint filter is disposed at the bottom of the pulsator; the pulsator is provided with water passage holes, which cooperate with the lint filter to form a filtration channel.

[0010] In the above solution, by providing a lint filter at the bottom of the impeller, the surface of the impeller is free of depressions or protrusions to avoid scratching clothes. In addition, by providing water passage holes on the impeller, the centrifugal force generated by the rotation of the impeller can be better utilized to collect lint more easily into the lint filter, thereby improving the lint collection efficiency.

[0011] Furthermore, the water passage hole cooperates with the wire debris filter to form a filtration channel for water to flow from top to bottom.

[0012] Furthermore, the impeller assembly also includes,

[0013] A pulsator shaft is located at the center of the pulsator, and the lint filter is located at the bottom of the pulsator on the side near the pulsator shaft.

[0014] Preferably, the water passage hole is located on the side of the impeller near the impeller shaft.

[0015] In the above scheme, by setting the lint filter at the bottom of the impeller near the impeller shaft, the internal space at the bottom of the impeller can be fully utilized to increase the volume of the lint filter and improve the amount of lint collected.

[0016] Furthermore, the lint filter is open on one side facing the impeller, the impeller forms a cover for the open side, and the water passage forms the water inlet of the lint filter;

[0017] The wire lint filter has an outlet on the side away from the water inlet, and a filter section for intercepting wire lint is provided between the water inlet and the water outlet.

[0018] Furthermore, the lint filter is a box structure with an open top, and the four side walls of the lint filter form the end face of the open top that matches the shape of the lower surface of the impeller.

[0019] Preferably, the end face is sealed to the lower surface of the impeller.

[0020] Furthermore, the height of the sidewall of the lint filter on the side closer to the impeller shaft is less than the height of the sidewall of the lint filter on the side farther from the impeller shaft.

[0021] Furthermore, the water outlet is located at the end of the bottom wall of the wire debris filter away from the water passage, and the filter part is installed on the water outlet.

[0022] Furthermore, a backflow preventer is provided below the water inlet of the lint filter;

[0023] Preferably, the anti-reverse mechanism is a anti-reverse valve plate, one end of which is connected to the side wall of the lint filter near the impeller shaft, and the other end extends away from the impeller shaft and abuts against the lower surface of the impeller.

[0024] Furthermore, the lint filter also includes,

[0025] The protrusion is located below the check valve plate away from the impeller shaft and engages with the other end of the check valve plate to prevent the check valve plate from tilting excessively.

[0026] In the above solution, a protrusion is provided at a position below the check valve plate away from the impeller shaft. When the other end of the check valve plate moves downward when it encounters water, the protrusion cooperates with the check valve plate to prevent the other end of the check valve plate from tilting too much and causing it to fail to reset.

[0027] Preferably, the protrusion is disposed on the bottom wall of the lint filter below the check valve plate.

[0028] Another aspect of the present invention provides a washing machine, comprising: a washing tub; and any of the above-described impeller assembly, the impeller assembly being disposed at the bottom of the washing tub.

[0029] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0030] The impeller assembly provided by the present invention can make full use of the internal space at the bottom of the impeller by placing the lint filter at the bottom of the impeller near the impeller shaft, thereby increasing the volume of the lint filter and improving the amount of lint collected.

[0031] The impeller assembly provided by the present invention can make full use of the internal space at the bottom of the impeller by placing the lint filter at the bottom of the impeller near the impeller shaft, thereby increasing the volume of the lint filter and improving the amount of lint collected.

[0032] The impeller assembly provided by the present invention has a protrusion located below the check valve plate away from the impeller shaft. When the other end of the check valve plate moves downward when it encounters water, the protrusion cooperates with the check valve plate to prevent the other end of the check valve plate from tilting too much and thus failing to reset.

[0033] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0034] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0035] Figure 1 This is a schematic diagram of the impeller assembly of the present invention.

[0036] Figure 2 This is a cross-sectional view of the impeller assembly of the present invention.

[0037] Figure 3This is a schematic diagram of one structure of the lint filter of the present invention.

[0038] Figure 4 This is a schematic diagram of another structure of the lint filter of the present invention.

[0039] In the diagram: 10. Impeller assembly; 11. Impeller; 111. Water passage hole; 12. Impeller shaft; 13. Wire lint filter; 132. Bottom wall; 133. Check valve plate; 134. Planar structure; 135. Inclined part; 136. Water outlet; 137. Protrusion.

[0040] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0042] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] like Figure 1 and Figure 2As shown, one aspect of the present invention provides a pulsator assembly, including a pulsator 11 and a lint filter 13, wherein the lint filter 13 is disposed at the bottom of the pulsator 11; the pulsator 11 is provided with a water passage hole 111, which cooperates with the lint filter 13 to form a filtration channel.

[0046] In the above solution, by providing a lint filter 13 at the bottom of the impeller 11, the surface of the impeller 11 is free of depressions or protrusions to avoid scratching clothes. In addition, by providing a water passage hole 111 on the impeller 11, the centrifugal force generated by the rotation of the impeller 11 can be better utilized to collect lint into the lint filter 13 more easily, thereby improving the lint collection efficiency.

[0047] In some embodiments, the water passage 111 cooperates with the lint filter 13 to form a filtration channel for water to flow from top to bottom.

[0048] It is understood that when the water passage 111 and the wire lint filter 13 cooperate to form a water-passing filtration channel from bottom to top, the water passage 111 constitutes the water outlet 136 of the wire lint filter 13.

[0049] In some embodiments, the impeller assembly 10 further includes,

[0050] The impeller shaft 12 is located at the center of the impeller 11, and the lint filter 13 is located at the bottom of the impeller 11 on the side near the impeller shaft 12.

[0051] Preferably, the water passage 111 is located on the side of the impeller 11 near the impeller shaft 12.

[0052] In the above scheme, by setting the lint filter 13 at the bottom of the impeller 11 near the impeller shaft 12, the internal space at the bottom of the impeller 11 can be fully utilized, the volume of the lint filter 13 can be increased, and the amount of lint collected can be improved.

[0053] In some embodiments, the lint filter 13 is open on one side facing the impeller 11, the impeller 11 forms a cover for the open side, and the water inlet 111 forms a water inlet for the lint filter 13.

[0054] The wire lint filter 13 has an outlet 136 on the side away from the water inlet 111, and the wire lint filter 13 has a filter section for intercepting wire lint between the water inlet and the water outlet 136.

[0055] By setting up a filter section, lint can be intercepted inside the lint filter 13.

[0056] In some implementations, such as Figure 3 and Figure 4 As shown, the lint filter 13 is a box structure with an open top, and the four side walls of the lint filter 13 form the end face of the open top, which matches the shape of the lower surface of the impeller 11.

[0057] When installing the lint filter 13, matching the shape of the open end face with the lower surface of the impeller 11 allows the lint filter 13 to better fit with the lower surface of the impeller 11, thereby improving the assembly efficiency of the lint filter 13 and the impeller 11.

[0058] It is understandable that the lint filter 13 facing the impeller 11 can also be a closed structure. In this case, the closed structure is provided with through holes, and the through holes correspond one-to-one with the water passage holes 111. The diameter of the through holes is even larger than the diameter of the water passage holes 111, so as to ensure that the water can flow smoothly.

[0059] Preferably, the end face is sealed to the lower surface of the impeller 11.

[0060] The sealing arrangement prevents lint from leaking out of the gap between the end face and the lower surface of the impeller 11 from the lint filter 13.

[0061] In some embodiments, the width of the sidewall of the lint filter 13 on the side closer to the impeller shaft 12 is smaller than the width of the sidewall of the lint filter 13 on the side farther from the impeller shaft 12.

[0062] By configuring the wire lint filter 13 with the above structure, a gradually widening water flow channel can be provided for the water flowing in from the inlet, which is conducive to further water flow and improves the collection efficiency of wire lint.

[0063] Furthermore, the height of the sidewall of the lint filter 13 on the side closer to the impeller shaft 12 is less than the height of the sidewall of the lint filter 13 on the side farther from the impeller shaft 12.

[0064] At this time, apart from the sidewall of the lint filter 13 near the impeller shaft 12 and the sidewall away from the impeller shaft 12, the other two sidewalls can serve as water flow guides, which can gradually slow down the flow rate of the water flowing in from the inlet hole, preventing the water flow rate from being too fast and washing the smaller lint out of the lint filter 13, thus improving the lint collection rate.

[0065] In one embodiment, the water outlet 136 is located at the end of the bottom wall 132 of the wire debris filter 13 away from the water passage 111, and the filter part is installed on the water outlet 136.

[0066] It is understood that the water outlet 136 may also be located at the end of the side wall of the wire chip filter 13 away from the water passage 111.

[0067] In addition, the outlet 136 can be set on the side wall of the wire lint filter 13 away from the impeller shaft 12, or it can be set on two other side walls connected to the side wall of the wire lint filter 13 away from the impeller shaft 12.

[0068] Preferably, the filtration section is a filter screen, which covers or is embedded in the water outlet 136.

[0069] In some embodiments, the lint filter 13 is provided with a backflow preventer below the water inlet 111;

[0070] When the water inlet 111 is a water inlet, by setting a backflow prevention mechanism below the water inlet, it can be prevented that lint flows back out of the lint filter 13 with the water flow and then returns to the top of the impeller 11 to contaminate clothing.

[0071] Preferably, the anti-reverse mechanism is a anti-reverse valve plate 133, one end of which is connected to the side wall of the lint filter 13 near the impeller shaft 12, and the other end extends away from the impeller shaft 12 and abuts against the lower surface of the impeller 11.

[0072] As one implementation method, such as Figure 3 As shown, the check valve plate 133 has a planar structure 134, one end of which is connected to the side wall of the lint filter 13 near the impeller shaft 12, and the other end extends away from the impeller shaft 12 and abuts against the lower surface of the impeller 11.

[0073] As another implementation scheme, such as Figure 4 As shown, the check valve plate 133 also includes an inclined portion 135, one end of which is connected to the planar structure 134, and the other end extends inclinedly away from the impeller shaft 12 and is in close contact with the impeller 11 wall.

[0074] In the above solution, by providing an inclined portion 135 on the check valve plate 133, the inclined portion 135 is tightly fitted with the wall of the impeller 11, and there are no gaps, which can prevent the lint from flowing back to the water inlet, and when the impeller 11 stops rotating, it prevents the water remaining inside the impeller 11 from flowing into the lint filter 13.

[0075] Preferably, the position where the inclined portion 135 connects to the planar structure 134 is a smooth transition.

[0076] In some embodiments, the lint filter 13 further includes,

[0077] The protrusion 137 is located below the check valve plate 133 away from the impeller shaft 12, and cooperates with the other end of the check valve plate 133 to prevent the check valve plate 133 from tilting excessively.

[0078] In the above scheme, by providing a protrusion 137 at a position below the check valve plate 133 away from the impeller shaft 12, when the other end of the check valve plate 133 moves downward when it encounters water, the protrusion 137 cooperates with the check valve plate 133 to prevent the other end of the check valve plate 133 from tilting too much and thus failing to reset.

[0079] Preferably, the protrusion 137 is disposed on the bottom wall 132 of the lint filter 13 below the check valve plate 133.

[0080] It is understood that the protrusion 137 may also be provided on the side wall of the lint filter 13 below the check valve plate 133.

[0081] Preferably, the protrusion 137 is connected to the lower part of the side wall of the lint filter 13.

[0082] In some embodiments, the lint filter 13 further includes a connecting portion disposed on the side wall; the lint filter 13 is detachably connected to the impeller 11 via the connecting portion.

[0083] Specifically, the connecting part includes a movable claw disposed on the side wall near the impeller shaft 12 and two fixed claws disposed on the side wall away from the impeller shaft 12, and the lint filter 13 is detachably connected to the bottom of the impeller 11 by the movable claw and the fixed claws.

[0084] Another aspect of the present invention provides a washing machine, comprising: a washing tub; and a pulsator assembly 10 as described above, the pulsator assembly 10 being disposed at the bottom of the washing tub.

[0085] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A pulsator assembly comprising a pulsator and a lint filter, the lint filter being arranged at the bottom of the pulsator; characterized in that: a water passage hole is arranged on the pulsator, the water passage hole and the lint filter cooperate to form a filtering passage; the water passage hole is arranged on the side of the pulsator close to the pulsator shaft; the lint filter is a box structure with an open top, the four side walls of the lint filter constitute the open end face and match the shape of the lower surface of the pulsator; the pulsator constitutes the cover of the open end face, the water passage hole constitutes the water inlet hole of the lint filter; the side of the lint filter away from the water passage hole is provided with a water outlet, and the lint filter is provided with a filtering part for intercepting lint between the water inlet hole and the water outlet; a check mechanism is arranged below the water passage hole corresponding to the lint filter, and the check mechanism comprises a check valve; the lint filter further comprises a protruding part, which is located below the position away from the pulsator shaft of the check valve and cooperates with the other end of the check valve to prevent the check valve from tilting excessively.

2. The pulsator assembly according to claim 1, characterized in that: the water passage hole and the lint filter cooperate to form a filtering passage through which water flows from top to bottom.

3. The pulsator assembly according to claim 2, characterized in that: the lint filter is arranged at the bottom of the side of the pulsator close to the pulsator shaft; 4. The impeller assembly of claim 1, wherein: the end face is sealingly arranged between the lower surface of the pulsator.

5. The pulsator assembly according to claim 1, characterized in that: the height of the side wall of the lint filter close to the pulsator shaft is less than the height of the side wall of the lint filter away from the pulsator shaft.

6. The pulsator assembly according to claim 1, characterized in that: the water outlet is arranged at one end of the bottom wall of the lint filter away from the water passage hole, and the filtering part is mounted on the water outlet.

7. The pulsator assembly according to any one of claims 1-6, characterized in that: one end of the check valve is connected to the side wall of the lint filter close to the pulsator shaft, and the other end extends away from the pulsator shaft and abuts against the lower surface of the pulsator.

8. The impeller assembly of claim 7, wherein: the protruding part is arranged on the bottom wall of the lint filter below the check valve.

9. A laundry machine characterized by comprising: a washing tub; and the pulsator assembly according to any one of claims 1-8, which is arranged at the bottom of the washing tub.

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