Filter screen, filter screen assembly and dish washing machine

Abstract

The utility model belongs to the technical field of electrical equipment, and particularly relates to a filter screen, a filter screen assembly and a dish washing machine to solve the technical problem that washing water cannot be continuously circulated or the washing effect of tableware becomes poor. The filter screen is applied to the dish washing machine, a mounting part used for assembling a filter cup is arranged in the middle of the filter screen, the top of the filter screen is sequentially lowered in the direction close to the mounting part, a plurality of filter holes are formed in the filter screen, and at least part of the filter holes are different in hole diameter. According to the washing water filtering device, the filtering effect on washing water can be guaranteed, foreign matter is prevented from blocking the filtering holes of all the filtering areas, it is guaranteed that the washing water can continuously pass through the filtering net, the washing water is continuously circulated, and good practicability is achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of electrical equipment, and specifically relates to a filter, a filter assembly, and a dishwasher. Background Art

[0002] The dishwasher is equipped with a filter assembly consisting of a flat filter and a filter cup to filter the washing water to prevent the dirt in the washing water from causing secondary contamination to the tableware during the washing process.

[0003] In the related art, the filter assembly has technical problems such as the inability to continuously circulate washing water or the deterioration of the washing effect of tableware, and there is room for improvement. Summary of the Invention

[0004] The present application provides a filter, a filter assembly, and a dishwasher to improve the technical problem that washing water cannot be continuously circulated or the washing effect of tableware is deteriorated.

[0005] In a first aspect of the present application, a filter screen is provided for use in a dishwasher, wherein a mounting portion for assembling a filter cup is provided in the middle of the filter screen, and the top of the filter screen gradually decreases toward the mounting portion. The filter screen is provided with a plurality of filter holes, and at least some of the plurality of filter holes have different apertures.

[0006] The filter provided by the present application has a mounting portion for assembling the filter cup provided in the middle of the filter, and the top of the filter gradually decreases in the direction close to the mounting portion. Foreign matter on the filter is washed through the surface of the filter into the filter cup of the mounting portion for collection. In the process of the foreign matter being washed into the filter cup of the mounting portion, since at least some of the multiple filter holes on the filter have different apertures, the filter holes with smaller apertures can prevent foreign matter from falling through the filter holes, thereby ensuring the filtering effect on the washing water, and the filter holes with larger apertures can ensure the filtering efficiency, thereby preventing foreign matter from clogging the filter holes on the filter screen, thereby ensuring that the washing water can continuously pass through the filter screen, so that the washing water can continuously circulate, and has good practicality.

[0007] In some embodiments, the filter screen is provided with more than two filtering areas, the more than two filtering areas are sequentially close to the mounting portion, the tops of the more than two filtering areas are sequentially lowered toward the mounting portion, and the aperture diameters of the filtering holes of the more than two filtering areas are sequentially reduced toward the mounting portion.

[0008] In some embodiments, the diameters of the filter holes in the two or more filter areas decrease in sequence as they approach the mounting portion.

[0009] In some embodiments, the pore sizes of the filter holes in the two or more filter areas decrease in sequence by 0.1 mm to 0.2 mm.

[0010] In some embodiments, the filtering area is in an annular structure or a square structure coaxial with the mounting portion.

[0011] In some embodiments, a recess is provided on the top of the filter screen, and the mounting portion is provided at the center of the recess.

[0012] In some embodiments, the sidewall of the recess is inclined and / or arc-shaped, and the two or more filtering areas are arranged on the sidewall of the recess.

[0013] In a second aspect of the present application, the present application further provides a filter assembly, which includes a filter cup and the above-mentioned filter, the filter cup is assembled at the mounting portion of the filter, and at least a portion of the filter is placed at the bottom of the filter.

[0014] The filter assembly provided in the present application can ensure the filtering effect of foreign matter, improve the washing effect of tableware, and ensure that the washing water can continue to pass through the filter so that the washing water can continue to circulate, and has good practicality.

[0015] In a third aspect of the present application, the present application further provides a dishwasher comprising the above-mentioned filter assembly.

[0016] The dishwasher provided by the present application has a filter assembly that can ensure the filtering effect of foreign matter, improve the washing effect of tableware, and ensure that the washing water can continue to pass through the filter so that the washing water can continue to circulate, which has good practicality.

[0017] In some embodiments, the dishwasher further comprises: a spray arm assembly, wherein an output portion of the spray arm assembly is positioned above the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A partial structural schematic diagram of a dishwasher in one or more embodiments of the present application is shown;

[0020] Figure 2 Shown Figure 1 A schematic diagram of the structure of the filter assembly;

[0021] Figure 3 Shown Figure 2 Explosion diagram of

[0022] Figure 4 Shown Figure 2 Schematic diagram of the structure of the filter;

[0023] Figure 5 Shown Figure 3 Schematic diagram of the structure of the filter cup.

[0024] Description of reference numerals:

[0025] Filter 100, mounting portion 101, filtering area 102, first filtering area 1021, second filtering area 1022, concave area 103, first overlapping portion 104, concave portion 105, mounting recess 106, filtering hole 107;

[0026] Filter cup-200, second overlapping portion-201, sewage inlet-202;

[0027] Spray arm assembly-300;

[0028] Liner - 400;

[0029] Water cup - 500. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to understand the present application more clearly, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of this application.

[0031] Dishwashers automatically wash dishes such as bowls, chopsticks, plates, dishes, knives, and forks. They typically use a circulating water system. To prevent secondary contamination of the dishes by impurities in the wastewater during the washing process, filtration is required to ensure a high cleanliness rate. In related technology, a filter assembly consisting of a screen and a filter cup is typically installed at the bottom of the dishwasher's inner tank to filter the water within.

[0032] In the prior art, the pores on the filter screen have a uniform diameter to filter foreign matter from the wash water, causing the foreign matter to accumulate on the filter screen. If too much foreign matter accumulates on the filter screen, it will clog the filter screen, affecting the continuous circulation of the wash water. To prevent the accumulation of foreign matter and block the filter screen, the pore size of the filter screen is increased, but the filter screen will not be able to filter foreign matter, affecting the washing effect of the dishes and failing to guarantee the dishwashing rate.

[0033] In view of this, the present application provides a filter, a filter assembly and a dishwasher to improve the technical problem that the washing water cannot circulate continuously or the washing effect of the dishes deteriorates.

[0034] Figure 1 shows a partial structural schematic diagram of a dishwasher in one or more embodiments of the present application, Figure 2 Shown Figure 1 Schematic diagram of the structure of the filter assembly, Figure 3 Shown Figure 2 Explosion diagram of . Figure 1-Figure 3 The dishwasher provided in this application includes an inner tank 400, a filter screen 100, a filter cup 200, a spray arm assembly 300, and a water cup 500. The spray arm assembly 300 is placed in the inner tank 400, the filter screen 100 is assembled to the bottom of the inner tank 400 and is located below the spray arm assembly 100, the filter cup 200 is assembled on the filter screen 100, and the water cup 500 is assembled below the filter screen 100. The bottom of the filter cup 200 is embedded in the water cup 500 located at the bottom of the filter screen 100. The clean water output by the spray arm assembly 300 is sprayed onto the tableware in the inner tank 400. The washing water after cleaning the tableware is mixed with foreign matter. After being filtered by the filter screen assembly formed by the filter cup 200 and the filter screen 100, it is input into the water cup 500 and then pumped by the washing pump to the spray arm assembly 300 for output again, thereby forming a recycling of the washing water.

[0035] Figure 4 Shown Figure 2 Schematic diagram of the filter structure. Figure 4 The filter screen 100 of the present application is applied to a dishwasher. A mounting portion 101 for assembling a filter cup 200 is provided in the middle of the filter screen 100. The top of the filter screen 100 gradually decreases toward the mounting portion 101. A plurality of filter holes 107 are provided on the filter screen 100, and at least some of the plurality of filter holes 107 have different apertures.

[0036] The filter screen 100 provided in the present application has a mounting portion 101 for assembling the filter cup 200 provided in the middle portion of the filter screen 100. The top of the filter screen 100 gradually decreases in the direction close to the mounting portion 101. Foreign matter on the filter screen 100 is washed through the surface of the filter screen 100 and collected in the filter cup 200 of the mounting portion 101. In the process of the foreign matter being washed into the filter cup 200 of the mounting portion 101, since at least some of the multiple filter holes 107 on the filter screen 100 have different apertures, the filter holes 107 with smaller apertures can prevent foreign matter from falling from the filter holes 107, thereby ensuring the filtering effect of the washing water. The filter holes 107 with larger apertures can ensure the filtering efficiency and prevent foreign matter from clogging the filter holes 107 on the filter screen 100, thereby ensuring that the washing water can continue to pass through the filter screen 100, so that the washing water can continue to circulate, and has good practicality.

[0037] In one embodiment, the filter 100 is provided with two or more filter areas 102, and the two or more filter areas 102 are successively close to the mounting portion 101. The tops of the two or more filter areas 102 are successively lowered in the direction close to the mounting portion 101. The two or more filter areas 102 are all provided with filter holes 107, and the diameters of the filter holes 107 of the two or more filter areas 102 are successively reduced in the direction close to the mounting portion 101. Since the diameters of the filter holes 107 of the two or more filter areas 102 on the filter 100 are successively reduced in the direction close to the mounting portion 101, the diameters of the filter holes 107 in the filter areas 102 far from the mounting portion 101 are larger. The filter holes 107 with larger diameters can ensure the filtration efficiency and prevent foreign matter from clogging the filter holes 107 on the filter 100, so as to ensure that the washing water can continuously pass through the filter 100, so that the washing water can continuously circulate. Since the tops of the two or more filter areas 102 are successively lowered in the direction close to the mounting portion 101, the diameters of the filter holes 107 of the filter areas 102 far from the mounting portion 101 are larger. The filter holes 107 with larger diameters can ensure the filtration efficiency and prevent foreign matter from clogging the filter holes 107 on the filter 100, so as to ensure that the washing water can continuously pass through the filter 107, so that the washing water can continuously circulate. The filter holes 107 of the two or more filter areas 102 are successively reduced in diameter in the direction close to the mounting portion 101. Foreign matter remaining on the filter screen 100 is washed through the surface of the filter screen 100 and collected in the filter cup 200 of the mounting portion 101, and will not fall from the filter holes 107 of the filter area 102, thereby ensuring the filtering effect of the washing water and preventing foreign matter from clogging the filter holes 107 of each filter area 102, so as to ensure that the washing water can continue to pass through the filter screen 100, so that the washing water can continue to circulate, which has good practicality.

[0038] In another embodiment, the apertures of the filter holes 107 in each filter area 102 may not decrease sequentially. For example, the apertures of the filter holes 107 in the outer filter area 102 and the inner filter area 102 are consistent, and the apertures of the filter holes 107 in the middle filter area 102 are smaller or larger than the apertures of the adjacent filter areas 102. This can also ensure the filtering effect to a certain extent and prevent foreign matter from clogging the filter holes 107 on the filter screen 100.

[0039] Combine Figure 4 The filter 100 shown in the present application is a roughly planar structure, with a concave area 103 provided on its circumference for cooperating with the spray arm assembly 300 of the dishwasher. A first overlapping portion 104 is provided on the periphery of the filter 100. The first overlapping portion 104 is a plate-like structure, which overlaps the edge of the opening at the bottom of the inner pot 400. A mounting hole is provided in the middle of the filter 100, and an annular mounting recess 106 is provided on the edge of the mounting hole for loading the filter cup 200. The mounting hole is configured as the mounting portion 101 of the filter 100.

[0040] In one embodiment, the aperture diameters of the filter holes 107 of the two or more filter areas 102 decrease in a direction approaching the mounting portion 101, and the aperture diameters of the filter holes 107 of the two or more filter areas 102 decrease in a range of 0.1 mm to 0.2 mm. For example, the aperture diameter of the filter holes 107 of the outermost filter area 102 is 0.8 mm, the aperture diameter of the filter holes 107 of the middle filter area 102 is 0.6 mm, and the aperture diameter of the filter holes 107 of the inner filter area 102 is 0.4 mm, that is, the aperture diameters of the filter holes 107 of the two or more filter areas 102 decrease in a range of 0.2 mm. In another embodiment, the aperture diameters of the filter holes 107 of more than two filter areas 102 may not decrease in sequence in the direction approaching the mounting portion 101. For example, the aperture diameter of the filter holes 107 of the outermost filter area 102 is 0.8 mm, the aperture diameter of the filter holes 107 of the middle filter area 102 is 0.6 mm, and the aperture diameter of the filter holes 107 of the inner filter area 102 is 0.5 mm.

[0041] In one embodiment, the filter area 102 of the present application is an annular structure coaxial with the mounting portion 101. Since the concave area 103 is provided on the periphery of the filter screen 100, the annular structure may be a fan-shaped structure or a circular ring structure. In another embodiment, the filter area 102 may be coaxial with the mounting portion 101, which is not limited here.

[0042] Combine Figure 4 Specifically, in this application, two filter regions 102 are provided. The filter region 102 away from the mounting portion 101 is defined as the first filter region 1021. The filter holes 107 of the first filter region 1021 have a diameter of 0.6 to 0.8 mm, which is the diameter commonly set for filter screens 100 in related art to ensure filtering effectiveness. The filter region 102 closer to the mounting portion 101 is defined as the second filter region 1022. The filter holes 107 of the second filter region 1022 have a diameter of 0.4 to 0.6 mm to prevent foreign matter from flowing out through the filter holes 107 of the second filter region 1022. Foreign matter remaining in the first filter region 1021 flows along the top of the second filter region 1022 to be collected in the filter cup 200 located in the middle of the filter screen 100.

[0043] Combine Figure 4 The filter screen 100 of the present application is provided with a recess 105 at the top, and the mounting portion 101 is provided at the center of the recess 105, that is, the mounting portion 101 is provided at the lowest point of the top of the filter screen 100, so that foreign matter on the filter screen 100 flows along the top of the filter screen 100 to the filter cup 200 of the mounting portion 101 of the filter screen 100 for collection.

[0044] Combine Figure 4In one embodiment, the sidewall of the recess 105 is inclined, that is, the sidewall of the recess 105 has a certain slope, and two or more filter areas 102 are provided on the sidewall of the recess 105, so that foreign matter on each filter area 102 of the filter screen 100 flows along the sidewall of the recess 105 to be collected in the filter cup 200 of the mounting portion 101 of the filter screen 100. In another embodiment, the sidewall of the recess 105 is curved, or a combination of an inclined surface and a curved surface, which can also cause foreign matter on each filter area 102 of the filter screen 100 to flow along the sidewall of the recess 105 to be collected in the filter cup 200 of the mounting portion 101 of the filter screen 100.

[0045] Combine Figure 4 ,

[0046] In the second aspect of the present application, the present application also provides a filter assembly, which includes a filter cup 200 and the above-mentioned filter 100, the filter cup 200 is assembled at the mounting portion 101 of the filter 100, and at least a portion of the filter 100 is placed at the bottom of the filter 100.

[0047] The filter assembly provided in the present application can ensure the filtering effect of foreign matter, improve the washing effect of tableware, and ensure that the washing water can continue to pass through the filter 100 so that the washing water can continue to circulate, and has good practicality.

[0048] Figure 5 Shown Figure 3 The structural diagram of the filter cup, combined with Figure 3-Figure 5 The filter cup 200 of the present application is provided with a second overlapping portion 201 on its circumference. The second overlapping portion 201 is also a plate-shaped structure. It overlaps the mounting recess 106 at the edge of the mounting hole, so that the filter cup 200 can be detachably connected to the filter screen 100, thereby facilitating the removal of foreign matter from the filter cup 200 and ensuring the cleanliness of the filter screen 100. When the filter cup 200 is assembled on the filter screen 100, the second overlapping portion 201 on the filter cup 200 is flush with the edge of the mounting recess 106. Alternatively, the second overlapping portion 201 on the filter cup 200 can be lower than the edge of the mounting recess 106, so that foreign matter can smoothly enter the filter cup 200 along the second overlapping portion 201.

[0049] Combine Figure 5 The filter cup 200 of the present application is provided with a plurality of sewage inlet holes 202 on the circumferential side. The plurality of sewage inlet holes 202 are arranged above the second overlapping portion 201. The bottom of the sewage inlet holes 202 extends to the second overlapping portion 201. Foreign matter on the filter screen 100 passes through the plurality of sewage inlet holes 202 and smoothly enters the filter cup 200 along the second overlapping portion 201.

[0050] Combine Figure 5The filter cup 200 of the present application has a frame structure on its periphery, and the second overlapping portion 201 is integrally formed in the middle of the frame structure. The hole on the frame structure adjacent to the second overlapping portion 201 is configured as a sewage inlet 202. The frame structure below the second overlapping portion 201 is assembled into the water cup 500 located below the filter assembly to collect the washing water filtered by the filter 100 and the filter cup 200, and pump it into the spray arm assembly 300 of the dishwasher through the pump body for recycling.

[0051] In a third aspect of the present application, the present application further provides a dishwasher comprising the above-mentioned filter assembly.

[0052] The dishwasher provided in the present application has a filter assembly that can ensure the filtering effect of foreign matter, improve the washing effect of tableware, and ensure that the washing water can continue to pass through the filter 100 so that the washing water can continue to circulate, which has good practicality.

[0053] Combine Figure 1 The dishwasher provided in this application also includes a spray arm assembly 300, the output portion of which is positioned above the filter 100. Wash water provided by the spray arm assembly 300 acts on the top surface of the filter 100 through the water spray holes (output portion) of the spray arm assembly 300, thereby flushing foreign matter remaining on the filter 100 through the surface of the filter 100 and collecting it in the filter cup 200 of the mounting portion 101. The specific structure of the spray arm assembly 300 is prior art and will not be described in detail here.

[0054] Since the filter assembly and dishwasher provided in the present application include the filter 100 according to any of the above technical solutions, the filter assembly and dishwasher have all the beneficial effects of the filter 100 according to the above technical solutions, which will not be elaborated here.

[0055] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0056] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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, and therefore should not be understood as a limitation on the present application.

[0057] In this application, unless otherwise specified or limited, the terms "connect," "fix," etc. should be understood broadly. For example, "fix" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0058] In addition, the terms "first," "second," and so on, used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0059] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A filter screen used in a dishwasher, characterized in that: A mounting portion for assembling a filter cup is provided in the middle of the filter screen, and the top of the filter screen gradually decreases toward the mounting portion. A plurality of filter holes are provided on the filter screen, and at least some of the plurality of filter holes have different apertures.

2. The filter screen according to claim 1, characterized in that The filter screen is provided with more than two filtering areas, the more than two filtering areas are sequentially close to the mounting portion, the tops of the more than two filtering areas are sequentially lowered toward the mounting portion, and the aperture diameters of the filtering holes of the more than two filtering areas are sequentially reduced toward the mounting portion.

3. The filter screen according to claim 2, characterized in that The diameters of the filter holes in the two or more filter areas decrease in sequence as they approach the mounting portion.

4. The filter screen according to claim 3, characterized in that The apertures of the filter holes in the two or more filter areas decrease in sequence by 0.1 mm to 0.2 mm.

5. The filter screen according to any one of claims 2 to 4, characterized in that: The filtering area is in an annular structure or a square structure coaxial with the mounting portion.

6. The filter screen according to any one of claims 2 to 4, characterized in that: A recess is provided on the top of the filter screen, and the mounting portion is provided at the center of the recess.

7. The filter screen according to claim 6, characterized in that The side wall of the recess is inclined and / or arc-shaped, and the two or more filtering areas are arranged on the side wall of the recess.

8. A filter assembly, characterized in that: The filter assembly includes a filter cup and the filter according to any one of claims 1 to 7, the filter cup is assembled at the mounting portion of the filter, and at least a portion of the filter is placed at the bottom of the filter.

9. A dishwasher, characterized in that: The dishwasher comprises the filter assembly according to claim 8.

10. The dishwasher according to claim 9, characterized in that The dishwasher further comprises: A spray arm assembly, wherein the output portion of the spray arm assembly is placed above the filter screen.

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