Filter assembly and dishwasher

Abstract

The present application relates to the field of filtering equipment and cleaning device, and particularly relates to a filtering assembly and a dishwasher. The filtering assembly of the dishwasher comprises: a planar filter, the inner periphery of the planar filter has an opening part, and the outer periphery of the planar filter is a porous structure; a cylindrical filter, which is embedded in the opening part and surrounded by the planar filter; a water container, which is sleeved on the outer periphery of the cylindrical filter and connected with the planar filter at one end, and the water flow channel between the water container and the cylindrical filter is communicated with the porous structure; and a protruding part, which is arranged on the outer periphery of the cylindrical filter and protrudes outward or arranged on the inner periphery of the water container and protrudes inward, so that the water flow channel forms an annular necking part at the protruding part. The filtering assembly is provided with the protruding part, so that the proportion of the washing water filtered by the planar filter and the cylindrical filter is relatively reasonable, thereby the filtering amount and the filtering precision can be considered, and the filtering effect is improved.

Description

Technical Field

[0001] This invention relates to the field of filtration equipment and cleaning devices, and more specifically to a filter assembly and a dishwasher having the filter assembly. Background Technology

[0002] With the continuous improvement of living standards, dishwashers are becoming increasingly widely used. A dishwasher includes a washing chamber, which contains a dish rack and spray arms. After the user places the dishes to be washed on the dish rack, the spray arms spray washing water to clean the dishes, thus achieving the dishwasher's cleaning function.

[0003] Dishwashers are typically equipped with filters to remove wastewater. After being filtered, the wastewater can be reused as washing water to wash dishes, achieving water recycling and thus saving water consumption and reducing user costs.

[0004] Existing filtration components, such as those disclosed in patent document CN204708799U, include a cylindrical filter and a planar filter arranged around the cylindrical filter. Both the planar filter and the cylindrical filter can filter wastewater after washing.

[0005] However, in existing filtration systems, the load of washing water is primarily concentrated in the planar filter, meaning more washing water passes through the planar filter and less through the cylindrical filter. Because the filtration precision of the planar filter is lower than that of the cylindrical filter, contaminants filtered by the planar filter during the washing process tend to disperse and cannot be effectively collected when the washing water enters the water tank from the washing chamber, thus affecting the final cleaning effect of the dishwasher.

[0006] Therefore, how to provide a filter component that can effectively distribute the load of washing water and thus improve the filtration effect has become a problem that needs to be solved. Summary of the Invention

[0007] To address the issue that the load of washing water is mainly concentrated in the planar filter, thus affecting the filtration effect, this invention provides a filter assembly for a dishwasher, comprising:

[0008] A planar filter has an opening on its inner circumference and a porous structure on its outer circumference.

[0009] A cylindrical filter, embedded in the opening and surrounded by a planar filter;

[0010] A water container, fitted around the outer periphery of a cylindrical filter and connected at one end to a planar filter, forms a water flow channel communicating with a porous structure between the water container and the cylindrical filter. The filter assembly also includes...

[0011] The protrusion is arranged around the outer periphery of the cylindrical filter and protrudes outward, or the protrusion is arranged around the inner periphery of the water container and protrudes inward, so that the water flow channel forms an annular neck at the protrusion.

[0012] According to the above technical solution, the planar filter and the cylindrical filter respectively filter the washing water, which can then be reused for washing dishes. The filtered washing water is stored in a water container, which can be used during dishwasher washing. This achieves the recycling of washing water, thereby saving water consumption in the dishwasher and reducing user operating costs. By setting a protrusion to form an annular neck at the water flow channel, the amount of washing water flowing through the planar filter through the water flow channel is reduced, preventing excessive concentration of washing water flowing into the planar filter. This ensures a relatively reasonable ratio of washing water filtered by the planar filter and the cylindrical filter, balancing filtration volume and filtration accuracy, and improving the filtration effect of the filter components.

[0013] Preferably, the cylindrical filter includes a cylindrical coarse filter and a cylindrical fine filter sleeved around the outer periphery of the cylindrical coarse filter.

[0014] According to the above technical solution, the cylindrical coarse filter performs preliminary coarse filtration on the washing water flowing into the cylindrical filter. The washing water filtered by the cylindrical coarse filter is then further finely filtered by the cylindrical fine filter, thus achieving two-stage filtration of the washing water. Compared to single-stage filtration, two-stage filtration provides a more thorough filtration of the washing water, thereby effectively improving the filtration accuracy and filtration effect of the cylindrical filter.

[0015] Preferably, the end of the cylindrical fine filter near the planar filter has a funnel-shaped structure, and the opening diameter of the cylindrical fine filter expands along the direction toward the planar filter.

[0016] According to the above technical solution, a funnel-shaped structure is formed at the end of the cylindrical fine filter near the planar filter, such that the opening diameter of the cylindrical fine filter expands in the direction towards the planar filter. This causes the cross-sectional area of ​​the water flow channel, the gap between the cylindrical fine filter and the water container, to gradually decrease along the flow direction of the washing water. This reduces the flow rate and filtration volume of the washing water flowing into the water container through the planar filter, while correspondingly increasing the flow rate and filtration volume of the washing water passing through the cylindrical filter. The cylindrical filter achieves higher filtration precision, thereby improving the overall filtration precision of the filter assembly.

[0017] Preferably, the protrusion expands the diameter of the cylindrical fine filter by 0.5-11.5 mm or shrinks the diameter of the water container by 0.5-11.5 mm to form an annular necked portion, and the gap width of the annular necked portion is 0.1-15 mm.

[0018] According to the above technical solution, the annular necked section with a gap width of 0.1-15mm creates a narrow flow path in the water flow channel, thereby effectively controlling the flow rate of washing water passing through the planar filter. This facilitates the adjustment of the flow rates of washing water passing through both the planar and cylindrical filters, preventing excessive concentration of washing water through the planar filter. Consequently, it balances the filtration volume and accuracy of both the planar and cylindrical filters, improving the filtration effect of the filter assembly.

[0019] Preferably, the protrusion is integrally formed with the cylindrical fine filter.

[0020] According to the above technical solution, the protrusion and the cylindrical fine filter are integrally formed, which facilitates processing and manufacturing and helps to reduce manufacturing costs.

[0021] Preferably, both the cylindrical coarse filter and the cylindrical fine filter have through holes on their side walls, and the cylindrical filter is connected to the water flow channel through the through holes.

[0022] According to the above technical solution, after the washing water enters the cylindrical filter, it first flows out through the through-holes on the side wall of the coarse cylindrical filter, and then flows out through the through-holes on the side wall of the fine cylindrical filter, finally entering the water flow channel for further recycling. Therefore, the washing water entering the cylindrical filter undergoes two filtrations, and the food residue in the washing water is fully filtered and retained on the side wall of the coarse or fine cylindrical filter, allowing the filtered washing water to be recycled again.

[0023] Preferably, the cylindrical filter has an inlet corresponding to the opening of the planar filter, and the cross-sectional area of ​​the annular constriction is smaller than the cross-sectional area of ​​the inlet.

[0024] According to the above technical solution, the cross-sectional area of ​​the annular constriction is smaller than the cross-sectional area of ​​the inlet of the cylindrical filter, so that the water flow channel forms a narrower channel at the annular constriction. This limits the amount of washing water flowing into the water container through the water flow channel of the planar filter to less than the amount of washing water flowing into the water container through the inlet of the cylindrical filter. As a result, the cylindrical filter filters more washing water than the planar filter. Furthermore, because the cylindrical filter has a higher filtration accuracy than the planar filter, the filtration accuracy is improved while ensuring the filtration capacity of the filter assembly. Therefore, it is beneficial to improve the overall filtration effect of the filter assembly.

[0025] Preferably, the protrusion is a complete and continuous annular protrusion, or a partially discontinuous annular protrusion.

[0026] According to the above technical solution, a complete and continuous annular protrusion is continuously arranged around the entire outer circumference of the cylindrical filter and protrudes outward, or around the entire inner circumference of the water container and protrudes inward. This technical solution can uniformly form an annular constriction throughout the entire annular water flow channel, effectively reducing washing water from all directions of the planar filter.

[0027] The discontinuous annular protrusions create annular necks with varying cross-sectional areas in the water flow channel. These discontinuous annular protrusions can be achieved by either incorporating or omitting arc-shaped protrusions on the outer circumference of the cylindrical filter or the inner surface of the water container. The resulting annular necks, with their varying cross-sectional areas, allow food residue to pass through, preventing it from clogging the annular necks and reducing the amount of water used in the filter, thus improving the overall filtration efficiency. Furthermore, the specific structure of the protrusions can be modified to suit different applications, enhancing the filter's applicability and flexibility.

[0028] Preferably, the end of the water container connected to the planar filter is provided with a constricted section, the diameter of which decreases along the direction away from the planar filter, and the position of the protrusion corresponds to the minimum diameter of the constricted section.

[0029] According to the above technical solution, the protrusion is positioned at the smallest diameter of the constriction, that is, the position of the annular neck constriction corresponds to the smallest diameter of the constriction. Therefore, while ensuring the original filtration effect, it avoids the structural strength reduction caused by the excessively long protrusion distance of the protrusion, which is beneficial to improving the overall processability and stability of the filter assembly.

[0030] The present invention also provides a dishwasher, including a washing chamber for placing tableware and a filter assembly for filtering the washing water after washing the tableware in the washing chamber. The filter assembly can be any of the filter assemblies described above. Attached Figure Description

[0031] Figure 1 This is a partial perspective view of a dishwasher according to an embodiment of the present invention.

[0032] Figure 2 This is a partial perspective view of the filter component according to an embodiment of the present invention.

[0033] Figure 3 This is an exploded view of the filtering component according to an embodiment of the present invention.

[0034] Figure 4 This is a cross-sectional view of the filtering component according to an embodiment of the present invention.

[0035] Figure 5 yes Figure 4 A magnified view of a portion of the image.

[0036] Reference numerals: 100 Filter assembly; 200 Dishwasher; 1 Flat filter; 11 Opening; 12 Porous structure; 2 Cylindrical filter; 21 Cylindrical coarse filter; 211 Inlet; 212 First through hole; 22 Cylindrical fine filter; 221 Horn-shaped structure; 222 Second through hole; 3 Water container; 31 Narrowing; 4 Protrusion; 5 Annular neck; 6 Through hole; a Water flow channel; b Intermediate water channel. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] This invention provides a filter assembly 100. Figure 1 This is a partial perspective view of the dishwasher 200 according to an embodiment of the present invention, as shown below. Figure 1 As shown, the filter assembly 100 is used in the dishwasher 200 to filter wastewater generated after washing dishes. The filter assembly 100 is disposed below the washing chamber of the dishwasher 200. In other embodiments of the present invention, the filter assembly 100 is not limited to being disposed as shown in the diagram. Figure 1 The dishwasher 200 shown may also be of other types, and no specific limitation is made here.

[0039] Figure 2 This is a partial perspective view of the filter assembly 100 according to an embodiment of the present invention, as shown below. Figure 2 As shown, the filter assembly 100 further includes a planar filter 1 and a cylindrical filter 2, each of which filters the wastewater generated during the washing of dishes.

[0040] Specifically, the outer periphery of the planar filter 1 has a porous structure 12. It should be noted that the outer periphery here does not specifically refer to the edge of the planar filter 1, but rather to the area from the opening 11 to the edge of the planar filter 1, for example... Figure 2 The location of the porous structure 12 shown is illustrated. In this embodiment, the porous structure 12 consists of multiple tiny pores (due to their small diameter, therefore...). Figure 2(Not shown), the residue left after washing the dishes with the washing water cannot pass through the porous structure 12, thus playing a filtering role.

[0041] The planar filter 1 has an opening 11 on its inner periphery. A cylindrical filter 2 is embedded in the opening 11 and surrounded by the planar filter 1. The cylindrical filter 2 includes a cylindrical coarse filter 21 and a cylindrical fine filter 22 sleeved on the outer periphery of the cylindrical coarse filter 21. The cylindrical filter 2 has an inlet 211 corresponding to the opening 11 of the planar filter 1. The cylindrical coarse filter 21 performs preliminary filtration on the sewage flowing into the cylindrical filter 2 through the inlet 211. After the water flow is filtered by the cylindrical coarse filter 21, it is further filtered by the cylindrical fine filter 22. The water flow filtered by the cylindrical fine filter 22 is relatively cleaner, thereby effectively improving the filtration accuracy of the cylindrical filter 2.

[0042] The terms "coarse" and "fine" used in the context of the coarse and fine tubular filters 21 and 22 do not refer to the coarse tubular filter 21 being coarser in shape than the fine tubular filter 22, but rather to their filtration capacity.

[0043] Figure 3 This is an exploded view of the filter component 100 according to an embodiment of the present invention, as shown below. Figure 3 As shown, both the cylindrical coarse filter 21 and the cylindrical fine filter 22 have through holes 6 on their side walls. Specifically, the through holes 6 include a first through hole 212 and a second through hole 222. The cylindrical coarse filter 21 has the first through hole 212, and the cylindrical fine filter 22 has the second through hole 222. The second through hole 222 connects to the water container 3. Figure 4 (As shown in the diagram) connection. Therefore, the washing water entering the tubular filter 2 undergoes two filtrations, and the food residue in the washing water is fully filtered and retained on the side wall of the tubular coarse filter 21 or the tubular fine filter 22. The filtered washing water can be recycled again.

[0044] Figure 4 This is a cross-sectional view of the filter component 100 according to an embodiment of the present invention, as shown below. Figure 4 As shown, the filter assembly 100 also includes a water container 3, which is fitted around the outer periphery of the cylindrical filter 2 and connected at one end to the planar filter 1. After the planar filter 1 and the cylindrical filter 2 filter the water flow, the water flows into the water container 3 for temporary storage and is then used for washing dishes, realizing the recycling of water resources, thereby saving water consumption and reducing the user's water costs.

[0045] Furthermore, the porous structure 12 is connected to the water container 3, and the water flow sequentially forms a water flow channel a along the porous structure 12 of the planar filter 1 and the water container 3. The cylindrical filter 2 is connected to the water flow channel a through the through hole 6, and the water flow sequentially forms an intermediate water channel b along the cylindrical coarse filter 21, the cylindrical fine filter 22 and the water container 3.

[0046] Figure 5 yes Figure 4 A magnified view of a portion, such as Figure 4 as well as Figure 5 As shown, the protrusion 4 is disposed around the outer periphery of the cylindrical fine filter 22 and protrudes outward, so that the water flow channel a forms an annular necked portion 5 at the protrusion 4. In some other embodiments of the present invention, the protrusion 4 is not limited to being disposed in the cylindrical fine filter 22, but can also be disposed in other locations, for example, the protrusion 4 can also be disposed on the inner periphery of the water container 3 and protrude inward.

[0047] By circling the protrusions 4, the flow rate entering the water container 3 along the water flow channel a is relatively reduced, while the flow rate entering the water container 3 through the intermediate water channel b is relatively increased. Since the cylindrical filter 2 has higher filtration precision, the increased flow rate in the intermediate water channel b facilitates the collection of pollutants in the wastewater through the cylindrical filter 2, preventing pollutants from spreading.

[0048] The surface of the planar filter 1 can collect food residue for easy cleaning, so it is usually set relatively large to capture residue. However, this can easily lead to excessive water flow through the planar filter 1, resulting in poor filtration. Therefore, an annular constriction 5 is provided to limit the amount of washing water flowing into the surface of the planar filter 1. This allows the surface of the planar filter 1 to be set relatively large to capture more food residue while limiting the amount of water flowing into the surface of the planar filter 1, thus ensuring filtration efficiency.

[0049] The protrusion 4 enables directional flow of water between the water container 3 and the suction port of the washing pump (not shown), promoting effective collection of contaminants and thus improving the washing effect of the dishwasher 200. After the water flows through the washing chamber into the water container 3, it enters the washing pump through the fixed suction port connected to the water container 3, and then re-enters the washing chamber through the washing pump, realizing a washing cycle.

[0050] In this embodiment, the protrusion 4 expands the diameter of the cylindrical fine filter 22 outward by 0.5-11.5 mm or shrinks the diameter of the water container 3 inward by 0.5-11.5 mm to form an annular necked portion 5, the gap width of which is 0.1-15 mm. Through actual experiments and tests, the annular necked portion 5 with a gap width of 0.1-15 mm creates a narrow flow path at the water flow channel a, thereby effectively controlling the flow rate of washing water passing through the planar filter 1. This facilitates the adjustment of the flow rates of washing water passing through both the planar filter 1 and the cylindrical filter 2, preventing excessive concentration of washing water through the planar filter 1. This balances the filtration volume and filtration accuracy of both the planar filter 1 and the cylindrical filter 2, improving the filtration effect of the filter assembly 100.

[0051] In this embodiment, the cross-sectional area of ​​the annular constriction 5 is smaller than that of the inlet 211, so that the water flow channel a forms a narrower channel at the annular constriction 5. This limits the amount of washing water flowing into the water container 3 through the water flow channel a via the planar filter 1, making it less than the amount of washing water flowing into the water container 3 through the inlet 211 of the cylindrical filter 2. As a result, the cylindrical filter 2 filters more washing water than the planar filter 1. Furthermore, because the cylindrical filter 2 has a higher filtration accuracy than the planar filter 1, the filtration accuracy is improved while ensuring the filtration capacity of the filter assembly 100. Therefore, it is beneficial to improve the overall filtration effect of the filter assembly 100.

[0052] In this embodiment, a funnel-shaped structure 221 is formed at one end of the cylindrical fine filter 22 near the planar filter 1. The funnel-shaped structure 221 expands in diameter in the direction toward the planar filter 1, causing the cross-sectional area of ​​the gap between the cylindrical fine filter 22 and the water container 3, i.e., the water flow channel a, to gradually decrease along the flow direction of the washing water. This reduces the flow rate and filtration volume of the washing water flowing into the water container 3 through the planar filter 1, while correspondingly increasing the flow rate and filtration volume of the washing water passing through the cylindrical filter 2. The cylindrical filter 2 has higher filtration accuracy, thereby improving the overall filtration accuracy of the filter assembly 100.

[0053] Furthermore, a constriction portion 31 is provided at the end where the water container 3 is connected to the planar filter 1. The diameter of the constriction portion 31 decreases along the direction away from the planar filter 1. The position of the protrusion 4 corresponds to the smallest diameter of the constriction portion 31. That is, the position of the annular necked portion 5 corresponds to the smallest diameter of the constriction portion 31. Therefore, while ensuring the original filtration effect, the structural strength is avoided from decreasing due to the excessively long protrusion distance of the protrusion 4, which is beneficial to improving the overall stability.

[0054] In this embodiment, the protrusion 4 is a complete and continuous annular protrusion that surrounds the entire outer periphery of the cylindrical filter 2 and protrudes outward, or surrounds the entire inner periphery of the water container 3 and protrudes inward, so as to uniformly form an annular constriction neck 5, which can effectively reduce the washing water from all directions of the planar filter 1.

[0055] In other embodiments of the present invention, the protrusion 4 is not limited to a complete annular protrusion structure; the protrusion 4 can also be a partially discontinuous annular protrusion. The partially discontinuous annular protrusion can form an annular necked portion 5 with varying flow path cross-sectional areas in the water flow channel a. This partially discontinuous annular protrusion can be achieved by providing arc-shaped protrusions or not providing them on parts of the outer periphery of the cylindrical filter 2 or the inner periphery of the water container 3. The annular necked portion 5 formed by this partially discontinuous annular protrusion creates a situation where the flow path cross-sectional area varies in different parts of the water flow channel a. Therefore, food residue can pass through the larger flow path cross-sectional area, preventing food residue carried in the washing water from clogging the annular necked portion 5, thus excessively reducing the amount of washing water passing through the cylindrical filter 2 and affecting the overall filtration effect of the filter assembly 100. Furthermore, the filter assembly 100 can change the specific structural form of the protrusion 4 according to the specific usage scenario, thereby improving the applicability and flexibility of the filter assembly 100.

[0056] In this embodiment, the protrusion 4 and the cylindrical fine filter 22 are integrally formed, which facilitates processing and manufacturing and helps reduce manufacturing costs. In other embodiments of the present invention, the protrusion 4 and the cylindrical fine filter 22 may also be manufactured separately and then connected, which is not specifically limited here.

[0057] Those skilled in the art will understand that specific technical features in various embodiments can be adaptively split or combined. Such splitting or combining of specific technical features will not cause the technical solution to deviate from the principles of the present invention; therefore, the technical solutions after splitting or combining will all fall within the protection scope of the present invention. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A filter assembly for a dishwasher, comprising: A planar filter, wherein the inner circumference of the planar filter has an opening and the outer circumference of the planar filter has a porous structure; A cylindrical filter is embedded in the opening and surrounded by the planar filter; the cylindrical filter includes a cylindrical coarse filter and a cylindrical fine filter sleeved around the outer periphery of the cylindrical coarse filter; A water container, fitted around the outer periphery of the cylindrical filter and connected at one end to the planar filter, forms a water flow channel communicating with the porous structure between the water container and the cylindrical filter. The filter assembly further comprises... The protrusion is disposed around the outer periphery of the cylindrical filter and protrudes outward, or the protrusion is disposed around the inner periphery of the water container and protrudes inward, so that the water flow channel forms an annular neck at the protrusion. The protrusion can be a complete and continuous annular protrusion, or a partially discontinuous annular protrusion. The protrusion expands the diameter of the cylindrical fine filter outward by 0.5-11.5 mm or shrinks the diameter of the water container inward by 0.5-11.5 mm to form the annular necked portion, and the gap width of the annular necked portion is 0.1-15 mm.

2. The filter assembly for a dishwasher as described in claim 1, characterized in that, The cylindrical fine filter has a horn-shaped structure at one end near the planar filter, and the horn-shaped structure expands in diameter in the direction toward the planar filter.

3. The filter assembly for a dishwasher as described in claim 1, characterized in that, The protrusion is integrally formed with the cylindrical fine filter.

4. The filter assembly for a dishwasher as described in any one of claims 1-3, characterized in that, Both the cylindrical coarse filter and the cylindrical fine filter have through holes on their side walls, and the cylindrical filter is connected to the water flow channel through the through holes.

5. The filter assembly for a dishwasher as claimed in claim 1, characterized in that, The cylindrical filter has an inlet corresponding to the opening, and the cross-sectional area of ​​the annular constriction is smaller than the cross-sectional area of ​​the inlet.

6. The filter assembly for a dishwasher as claimed in claim 1, characterized in that, The water container is provided with a constricted section at one end connected to the planar filter. The diameter of the constricted section decreases along the direction away from the planar filter, and the position of the protrusion corresponds to the smallest diameter of the constricted section.

7. A dishwasher, comprising a washing chamber for holding tableware and a filter assembly for filtering the washing water after washing the tableware in the washing chamber, characterized in that, The filter assembly is the filter assembly according to any one of claims 1-6.

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