Filtering device and dish washing machine

Abstract

The utility model discloses a filtering device and a dish-washing machine, the filtering device is installed in a washing inner cavity of the dish-washing machine, the filtering device comprises a first filtering piece and a second filtering piece, the first filtering piece comprises a first filtering layer and a second filtering layer which are arranged in a spaced mode, and the first filtering layer and the second filtering layer are matched to form a slag guiding flow channel; the second filtering part penetrates through the first filtering layer and the second filtering layer and comprises a third filtering layer and a fourth filtering layer which are arranged at an interval, the third filtering layer forms a first residue collecting cavity communicated with the washing inner cavity, and the fourth filtering layer is arranged around the peripheral side of the third filtering layer and is matched with the third filtering layer to form a second residue collecting cavity; and the second residue collecting cavity is communicated with the residue guide runner. The filtering effect and efficiency can be improved, so that the number of washing cycles is reduced, the washing time is saved, and the washing effect is improved.

Description

Technical Field

[0001] This application relates to the field of kitchen appliance technology, and in particular to a filtration device and a dishwasher having the filtration device. Background Technology

[0002] In related technologies, the filter device is a crucial component of the dishwasher. It is mainly responsible for filtering food residue and other impurities generated during the washing process to ensure the cleanliness of the washing water and thus improve the washing effect.

[0003] Therefore, improving the filtration efficiency of filtration devices is very important. Utility Model Content

[0004] This application provides a filtration device and a dishwasher, which can improve the filtration efficiency of the filtration device, thereby improving the washing effect.

[0005] To achieve the above objectives, a first aspect of this application provides a filtering device installed in the washing cavity of a dishwasher, the filtering device comprising:

[0006] The first filter element includes a first filter layer and a second filter layer that are spaced apart, and the first filter layer and the second filter layer cooperate to form a slag guiding channel.

[0007] The second filter element is disposed between the first filter layer and the second filter layer. The second filter element includes a third filter layer and a fourth filter layer disposed at intervals. The third filter layer forms a first residue collection chamber that communicates with the washing inner cavity. The fourth filter layer is disposed around the periphery of the third filter layer and cooperates with the third filter layer to form a second residue collection chamber. The second residue collection chamber communicates with the slag guide channel.

[0008] In some embodiments, the first filter layer and the second filter layer are arranged at an angle downward toward the second filter element.

[0009] In some embodiments, the first filter layer includes a first filter screen, and the second filter layer includes a second filter screen, wherein the mesh size of the second filter screen is greater than or equal to the mesh size of the first filter screen.

[0010] In some embodiments, the third filter layer includes:

[0011] A first annular support has a first slag guide opening on its peripheral wall. The first slag guide opening is higher than the end of the first filter layer near the second filter element, for guiding residue into the first residue collection chamber; and

[0012] The third filter screen is located on the peripheral wall of the first annular support and below the slag guide port.

[0013] In some embodiments, the fourth filter layer includes:

[0014] A second annular support is arranged around the first annular support, and the periphery of the opening of the second annular support is lower than the first slag guide opening; and

[0015] The fourth filter screen is located on the circumferential wall of the second annular support.

[0016] In some embodiments, the peripheral wall of the first annular support also has a flange located below the first slag guide port, the flange cooperating with the periphery of the opening of the second annular support to form a second slag guide port, the second slag guide port communicating with the slag guide channel.

[0017] In some embodiments, the flange is connected to the first filter layer, and the periphery of the opening of the second annular support is connected to the second filter layer.

[0018] In some embodiments, the mesh count of the fourth filter is greater than or equal to the mesh count of the third filter;

[0019] And / or, the mesh count of the third filter is greater than that of the second filter.

[0020] In some embodiments, at least two first slag guide ports are provided, and the two first slag guide ports are spaced apart circumferentially along the first annular support.

[0021] And / or, at least two third filters are provided, with the two third filters spaced apart circumferentially along the first annular support;

[0022] And / or, at least two fourth filters are provided, with the two fourth filters spaced apart circumferentially along the second annular support.

[0023] A second aspect of this application provides a dishwasher, comprising:

[0024] The inner liner forms a washing cavity;

[0025] The filter device described above is installed in the washing cavity;

[0026] A drainage channel, connected to the first and second residue collection chambers, is used to discharge residue and wastewater; and

[0027] The washing water path is connected to the washing chamber via the filter device.

[0028] In some embodiments, the dishwasher further includes a partition installed in the inner tub and dividing the washing chamber into an upper washing chamber and a lower washing chamber, and the filter is installed at the bottom of the partition and / or the lower washing chamber.

[0029] In the filtration device provided in this application embodiment, when washing water flows from the washing chamber into the first filter element, larger residues are first intercepted by the first filter layer and flow along the surface of the first filter layer to the first residue collection chamber (formed by the third filter layer of the second filter element). Smaller residues pass through the first filter layer and flow along the residue guide channel to the second residue collection chamber (formed by the cooperation of the third and fourth filter layers of the second filter element). The washing water, which has undergone preliminary filtration by the first filter element, undergoes secondary filtration again through the third and fourth filter layers after entering the second filter element. The third filter layer further filters the larger residues flowing into the first residue collection chamber, ensuring that larger residues do not enter the washing water path. The fourth filter layer performs finer filtration on the smaller residues entering the second residue collection chamber from the residue guide channel. Since both the first and second filter elements adopt a dual filtration structure, the filtration effect and efficiency are greatly improved, and residues and washing water can be separated more effectively, thereby reducing the number of washing cycles, saving washing time, and improving the washing effect. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a dishwasher provided in an embodiment of this application;

[0032] Figure 2 A schematic diagram of the separator, filter device, and spray arm provided in the embodiments of this application;

[0033] Figure 3 A schematic diagram of the internal structure of the separator, filter device, drainage water passage and washing water passage provided in the embodiments of this application;

[0034] Figure 4 This is a schematic diagram of the structure of the filtration device provided in the embodiments of this application;

[0035] Figure 5 This is a schematic diagram of the internal structure of the filtering device provided in the embodiments of this application;

[0036] Figure 6 This is a schematic diagram of the structure of the second filter element provided in an embodiment of this application.

[0037] Explanation of icon numbers:

[0038] 10. Inner tank; 100. Washing chamber; 101. Upper washing chamber; 102. Lower washing chamber; 20. Divider; 30. Filter device; 31. First filter element; 311. First filter layer; 312. Second filter layer; 3101. Slag guide channel; 32. Second filter element; 321. Third filter layer; 3211. First annular support; 3212. Third filter screen; 3213. Flange; 3201. First residue collection chamber; 3202. Second residue collection chamber; 3203. First slag guide port; 3204. Second slag guide port; 322. Fourth filter layer; 3221. Second annular support; 3222. Fourth filter screen; 40. Drainage channel; 41. Drainage pump; 50. Washing channel; 51. Washing pump; 52. Spray arm; 53. Water storage cup.

[0039] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0041] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0042] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0045] Most dishwashers on the market currently use a combination of a flat filter layer and a cylindrical food waste filter in the water reservoir inside the dishwasher. When the wash cycle begins, the flat filter layer works first, initially intercepting larger food scraps in the water and guiding them into the cylindrical food waste filter. The cylindrical food waste filter, using its internal mesh, further separates the food waste from the water. The separated water continues to participate in the wash cycle via a circulation pump, while the food waste remains inside the cylindrical filter, achieving the basic goal of food waste separation. During the draining phase, the waste waste and water are discharged from the dishwasher's washing chamber through the bottom channel by the drain pump.

[0046] However, this traditional filtration structure has the following problems. First, the filtration effect of circulating water is poor. The flat filter layer can only effectively filter larger particles of residue, but it is difficult to filter smaller particles. This causes these small particles to easily pass through the flat filter layer and mix into the washing pump to participate in subsequent circulating washes. As a result, the dishwasher needs to increase the number of circulating washes and extend the washing time. Even so, the washing effect is still difficult to achieve the ideal state. Second, if the filter layer is made denser to improve the filtration effect, the return water speed will be significantly slowed down. This will not only slow down the entire washing process, but also adversely affect the normal operation of the circulating pump, and may even cause the circulating pump to malfunction, reducing the service life of the dishwasher.

[0047] Therefore, this application provides a dishwasher that can improve the filtration efficiency of the filtration device, thereby improving the washing effect.

[0048] Specifically, please refer to Figures 1 to 5 , Figure 1 This is a schematic diagram of the dishwasher provided in this embodiment; Figure 2 This is a schematic diagram of the structure of the separator 20, the filter device 30, and the spray arm 52 provided in this embodiment;

[0049] Figure 3 A schematic diagram of the structure of the separator 20, filter device 30, drainage water passage 40 and washing water passage 50 provided in this embodiment; Figure 4 This is a schematic diagram of the structure of the filter device 30 provided in this embodiment; Figure 5 This is a schematic diagram of the internal structure of the filter device 30 provided in this embodiment.

[0050] The dishwasher in this embodiment includes an outer shell, a base, an inner tub 10, a door, a filter device 30, a drainage water channel 40, and a washing water channel 50.

[0051] The dishwasher's outer shell and base form its basic framework. The outer shell encloses the inner tub 10 and other internal components, protecting the internal structure and enhancing its appearance. The base supports the inner tub 10 and the entire internal structure of the dishwasher, ensuring stability during operation. The base is typically made of sturdy and durable materials, such as high-strength plastic or metal, to withstand the weight and pressure generated by the inner tub 10, dishes, and the washing process. The base can be equipped with reinforced support feet to further enhance stability. The outer shell can be made of different materials depending on design requirements; for example, a metal shell offers better durability and a premium feel, while a plastic shell prioritizes lightweight design and cost control.

[0052] The inner tank 10 in this embodiment is a key component of the dishwasher, forming a washing cavity 100 for accommodating tableware. The inner tank 10 can be formed by a top plate, a base, left and right side plates, and a back plate, creating a relatively enclosed space to prevent water and detergent leakage during the washing process and ensure that the washing operation takes place in a stable environment. For example, during the water spray washing stage, the inner tank 10 can withstand internal water pressure, ensuring that water does not leak out, thereby achieving efficient tableware cleaning.

[0053] In one embodiment, a dish rack is installed in the washing chamber 100 for placing tableware. The dish rack is movable, for example, it can be pushed and pulled out of the washing chamber 100. This allows the user to flexibly adjust the position of the dish rack according to the type and quantity of tableware to better adapt to different tableware placement needs. For example, when a large number of plates need to be washed, the dish rack can be pulled out to more easily arrange the plates neatly on the rack, and then pushed back into the washing chamber 100 for washing.

[0054] In this embodiment, the door is movably connected to the opening of the inner liner 10, specifically by a rotating mechanism. This rotating connection allows the door to be easily opened and closed, facilitating the user's loading and unloading of tableware. For example, the user can simply pull or push the door gently, and the door will smoothly rotate around its pivot axis, thus opening and closing the door.

[0055] In one embodiment, a control panel for controlling the washing program is installed on the door. The control panel integrates various operation buttons and a display screen. Users can select different washing modes, such as standard wash and quick wash, using the operation buttons to suit the cleaning needs of different types of tableware. The display screen shows the dishwasher's operating status in real time, such as remaining washing time and the current washing mode. For example, after placing the tableware in the dishwasher, the user selects the appropriate washing mode using the control panel on the door and starts the dishwasher to begin the automatic washing process. During the washing process, the user can monitor the dishwasher's progress at any time through the display screen.

[0056] The filter device 30 in this embodiment is installed in the washing cavity 100 and is a key component of the dishwasher, including a first filter element 31 and a second filter element 32.

[0057] In one embodiment, the first filter element 31 is arranged in a planar shape, and the second filter element 32 is arranged in a columnar shape.

[0058] The first filter element 31 includes a first filter layer 311 and a second filter layer 312 spaced apart, which cooperate to form a slag guiding channel 3101. The first filter layer 311 and the second filter layer 312 can be filter screens with different pore sizes. For example, the pore size of the first filter layer 311 is relatively large, which is used to initially intercept larger particles of slag, while the pore size of the second filter layer 312 is relatively small, which is used to further intercept smaller particles of slag, and together with the first filter layer 311, guides the flow of slag.

[0059] The first filter layer 311 and the second filter layer 312 can be fixed by a frame made of plastic or metal, formed by injection molding, welding and other processes to ensure a stable gap between the two filter layers, forming a slag guide channel 3101. The first filter element 31 can be installed at the bottom of the washing inner cavity 100 by snap-fit, bolt connection or other means.

[0060] In this embodiment, as Figure 3 As shown, Figure 3 The dashed arrow indicates the flow direction of the washing water. When the washing water flows from the washing chamber 100 into the first filter element 31, larger residues are first intercepted by the first filter layer 311 and flow along the surface of the first filter layer 311 to the first residue collection chamber 3201 (formed by the third filter layer 321 of the second filter element 32). Smaller residues pass through the first filter layer 311 and flow along the residue guide channel 3101 to the second residue collection chamber 3202 (formed by the cooperation of the third filter layer 321 and the fourth filter layer 322 of the second filter element 32). This design achieves preliminary classification and filtration of residues of different sizes, improves the targeting and efficiency of filtration, and provides a better foundation for subsequent secondary filtration.

[0061] The second filter element 32 is disposed between the first filter layer 311 and the second filter layer 312. The second filter element 32 includes a third filter layer 321 and a fourth filter layer 322 disposed at intervals. The third filter layer 321 forms a first residue collection chamber 3201 communicating with the washing inner cavity 100, used to collect larger residues that are directly intercepted and flow in from the first filter layer 311. The fourth filter layer 322 is disposed around the periphery of the third filter layer 321 and cooperates with the third filter layer 321 to form a second residue collection chamber 3202. The second residue collection chamber 3202 communicates with the residue guide channel 3101, used to collect smaller residues that flow in from the residue guide channel 3101. The third filter layer 321 and the fourth filter layer 322 can also be filter screens with different pore sizes for further fine filtration of the residues.

[0062] The third filter layer 321 and the fourth filter layer 322 can be fixed in a similar way to the first filter element 31, secured by a frame and kept spaced apart. The second filter element 32 is tightly fitted to the first filter element 31, ensuring smooth communication between the sludge guide channel 3101 and the second residue collection chamber 3202. For example, the second filter element 32 can be connected to the first filter element 31 by nesting, plugging, or other methods, and is securely connected to other components of the washing chamber 100, ensuring that it will not shift during dishwasher operation.

[0063] In this embodiment, the washing water, after initial filtration by the first filter element 31, undergoes secondary filtration through the third filter layer 321 and the fourth filter layer 322 after entering the second filter element 32. The third filter layer 321 further filters larger residues flowing into the first residue collection chamber 3201, ensuring that larger residues do not enter the washing water path 50. The fourth filter layer 322 performs finer filtration on smaller residues entering the second residue collection chamber 3202 from the slag guide channel 3101. Because both the first filter element 31 and the second filter element 32 employ a dual filtration structure, the filtration effect is greatly improved, enabling more effective separation of residues from the washing water. This reduces the possibility of small residues mixing into the washing pump 51 and participating in the circulating washing process, thereby reducing the number of washing cycles, saving washing time, and improving the washing effect.

[0064] In this embodiment, the drainage channel 40 is connected to the first residue collection chamber 3201 and the second residue collection chamber 3202. For example, as shown... Figure 3 As shown, the drainage path 40 includes a drain pump 41 and a drain pipe. The drain pipe is made of a corrosion-resistant material, such as plastic. The drain pump 41 provides the power for drainage. The drain pipe is connected to the first residue collection chamber 3201, the second residue collection chamber 3202, and the external drain outlet via a sealed connection to ensure that no leakage occurs during drainage. The drain pump 41 is connected to the drain pipe and is also electrically connected to the dishwasher's control system to achieve automatic drainage control.

[0065] After the washing cycle is completed, the drain pump 41 starts to discharge the residue and wastewater in the first residue collection chamber 3201 and the second residue collection chamber 3202 through the drain pipe to the dishwasher, thereby keeping the inside of the dishwasher clean and preventing residue from accumulating and causing odors and affecting the next washing effect.

[0066] In this embodiment, the washing water path 50 is connected to the washing chamber via the filter device 30. Exemplarily, the washing water path 50 includes a water storage cup 53, a washing pump 51, and a spray arm 52. The water storage cup 53 is connected to and communicates with the bottom wall of the washing chamber 100, and the filter device 30 is installed in the water storage cup 53. The inlet of the washing pump 51 is connected to the water storage cup 53, and the outlet of the washing pump 51 is connected to the spray arm 52.

[0067] The water reservoir 53 can be connected to the bottom wall of the washing cavity 100 by welding, one-piece molding, or sealing rings to ensure a tight seal and prevent water leakage. The washing pump 51 is connected to the water reservoir 53 and the spray arm 52 via a pipe, which is sealed. The spray arm 52 is installed inside the washing cavity 100 by rotation or fixation to ensure that the washing water is evenly sprayed onto the tableware.

[0068] During dishwasher operation, the washing water in the washing chamber 100, carrying food residue, flows to the water reservoir 53. The filter device 30 filters the washing water, trapping the residue in the residue collection chamber, while the relatively clean washing water remains in the water reservoir 53. The washing pump 51 starts, drawing the washing water from the water reservoir 53 and delivering it to the spray arm 52. The spray arm 52 sprays the washing water at a suitable pressure and angle onto the dishes in the washing chamber 100, thus cleaning the dishes. In this way, the washing water can be recycled within the washing water path 50, improving water resource utilization and reducing the dishwasher's energy consumption and water usage. Simultaneously, the water reservoir 53 provides a stable water source for the washing pump 51, ensuring the continuity and stability of the washing process.

[0069] In this embodiment, when the dishwasher is started, washing water is sprayed from the spray arm 52 of the washing water path 50 onto the dishes in the washing chamber 100, rinsing the dishes and causing food residue to detach from the dishes and mix into the washing water. The washing water containing residue first flows into the first filter element 31 of the filtration device 30. Larger residues are intercepted by the first filter layer 311 and flow along the first filter layer 311 to the first residue collection chamber 3201 (formed by the third filter layer 321 of the second filter element 32); smaller residues pass through the first filter layer 311 and flow along the residue guide channel 3101 to the second residue collection chamber 3202 (formed by the third filter layer 321 and the fourth filter layer 322 of the second filter element 32). The washing water that has been initially filtered by the first filter element 31 then undergoes secondary filtration through the third filter layer 321 and the fourth filter layer 322 of the second filter element 32. After double filtration, the clean washing water enters the water storage cup 53. The washing pump 51 draws the washing water from the water storage cup 53 and sprays it back onto the dishes through the spray arm 52 for cyclic washing. After the washing program is completed, the drain pump 41 starts to discharge the residue and wastewater in the first residue collection chamber 3201 and the second residue collection chamber 3202 into the dishwasher through the drain passage 40.

[0070] It is evident that this embodiment has the following beneficial effects:

[0071] First, the first filter element 31 and the second filter element 32 adopt a dual filtration structure and classify and filter residues of different sizes, which can more effectively intercept residues, greatly improve the filtration effect, and reduce the possibility of small residues being mixed into the washing cycle.

[0072] Secondly, due to the improved filtration effect, the washing water is cleaner, and a better washing effect can be achieved without multiple washing cycles, thereby reducing the number of washing cycles, saving washing time, and improving the working efficiency of the dishwasher.

[0073] Finally, effective filtration of residue prevents small particles from damaging the circulation pump, ensuring its normal operation and extending the dishwasher's lifespan. At the same time, the denser filter layer does not slow down the water return process, thus avoiding disruption to the entire washing cycle.

[0074] In one embodiment, the first filter layer 311 and the second filter layer 312 are arranged at an angle downward toward the second filter element 32. This inclined design helps guide the residue to slide naturally down the surfaces of the first filter layer 311 and the second filter layer 312, thereby improving the residue collection efficiency.

[0075] In one embodiment, the first filter layer 311 includes a first filter screen, and the second filter layer 312 includes a second filter screen, wherein the mesh size of the second filter screen is greater than or equal to the mesh size of the first filter screen. This means that the first filter screen is responsible for intercepting larger particles of residue, while the second filter screen further filters smaller particles of residue, creating a multi-stage filtration effect.

[0076] Please see Figure 6 , Figure 6 This is a schematic diagram of the structure of the second filter element 32 provided in this embodiment.

[0077] In one embodiment, the third filter layer 321 includes a first annular support 3211 and a third filter screen 3212.

[0078] The peripheral wall of the first annular support 3211 is provided with a first slag guide port 3203, which is higher than the end of the first filter layer 311 near the second filter element 32. This height design can effectively guide the residue sliding down from the first filter layer 311 smoothly into the first residue collection chamber 3201.

[0079] The third filter screen 3212 is disposed on the peripheral wall of the first annular support 3211 and located below the slag guide port. It is used to filter the slag entering the first slag collection chamber 3201 again to prevent larger slag from entering the washing water circuit 50.

[0080] The fourth filter layer 322 includes a second annular support 3221 and a fourth filter screen 3222.

[0081] The second annular support 3221 is arranged around the first annular support 3211, and the periphery of the opening of the second annular support 3221 is lower than the first slag guide port 3203, which can effectively prevent the residue from overflowing from the first slag guide port 3203 into the space between the fourth filter layer 322 and the third filter layer 321.

[0082] The fourth filter screen 3222 is located on the circumferential wall of the second annular support 3221 to finely filter the smaller residues that enter the second residue collection chamber 3202 from the slag guide channel 3101.

[0083] The annular supports for the third filter layer 321 and the fourth filter layer 322 can be formed by processes such as injection molding and welding to ensure structural stability. The third filter screen 3212 and the fourth filter screen 3222 are fixed to the peripheral wall of the corresponding annular supports by means of gluing, snap-fitting, etc.

[0084] In this embodiment, the washing water, after preliminary filtration by the first filter element 31, enters the second filter element 32. The first slag inlet 3203 of the third filter layer 321 guides larger residues into the first residue collection chamber 3201, where the third filter screen 3212 performs secondary screening. The fourth filter screen 3222 of the fourth filter layer 322 further filters smaller residues. This structural design further optimizes residue collection and filtration, effectively separating residues from washing water, reducing residue mixing into the washing pump 51 for circulating washing, significantly improving washing efficiency, and reducing the number of washing cycles.

[0085] In one embodiment, the peripheral wall of the first annular support 3211 also has a flange 3213 located below the first slag guide port 3203. The flange 3213 cooperates with the periphery of the opening of the second annular support 3221 to form a second slag guide port 3204, which is connected to the slag guide channel 3101.

[0086] In this embodiment, when the washing water carrying residue passes through the first filter element 31, the first filter layer 311 and the second filter layer 312 initially separate the residue. Larger residue enters the first residue collection chamber 3201 through the first residue guide port 3203, while smaller residue flows along the residue guide channel 3101. At this time, the second residue guide port 3204 serves as a connecting channel between the residue guide channel 3101 and the second residue collection chamber 3202, allowing smaller residue to smoothly enter the second residue collection chamber 3202 from the residue guide channel 3101. This design effectively optimizes the flow direction of the residue and improves the efficiency of residue collection.

[0087] Furthermore, the flange 3213 is connected to the first filter layer 311, and the periphery of the opening of the second annular support 3221 is connected to the second filter layer 312. This ensures that the first filter element 31 and the second filter element 32 form a tight, integrated structure, thereby guaranteeing that the connection between the slag guide channel 3101 and the second slag guide port 3204 remains smooth and will not become misaligned or blocked due to vibration or water flow impact during the washing process.

[0088] In one embodiment, the mesh count of the fourth filter 3222 is greater than or equal to the mesh count of the third filter 3212;

[0089] And / or, the mesh count of the third filter 3212 is greater than that of the second filter.

[0090] In this embodiment, when the washing water carrying residue enters the filtration device 30, it first passes through the first filter element 31, and the second filter screen performs preliminary filtration, intercepting relatively large residues. Next, some residue enters the first residue collection chamber 3201 through the first residue guide port 3203, where it undergoes secondary filtration by the third filter screen 3212. Since the third filter screen 3212 has a larger mesh size than the second filter screen, it can further intercept particles smaller than those intercepted by the second filter screen. The fourth filter screen 3222 is used for fine filtration of the residue entering the second residue collection chamber 3202; its mesh size is greater than or equal to that of the third filter screen 3212, allowing it to intercept even smaller residue particles. This progressive filtration method effectively improves the filtration effect, separating residues of different sizes as much as possible, reducing the amount of residue circulating in the washing water path 50, thereby improving the cleanliness of the washing water and ultimately enhancing the washing effect of the dishwasher. At the same time, this reasonable mesh size setting avoids clogging caused by excessive filtration load on a single filter, extends the filter's lifespan, and reduces maintenance costs.

[0091] In one embodiment, at least two first slag guide ports 3203 are provided, and the two first slag guide ports 3203 are provided at circumferential intervals along the first annular support 3211;

[0092] And / or, at least two third filters 3212 are provided, with the two third filters 3212 spaced apart circumferentially along the first annular support 3211;

[0093] And / or, at least two fourth filters 3222 are provided, with the two fourth filters 3222 being spaced apart circumferentially along the second annular support 3221.

[0094] This embodiment optimizes the quantity and distribution of the first slag guide port 3203, the third filter screen 3212, and the fourth filter screen 3222. At least two first slag guide ports 3203 are provided, spaced apart circumferentially along the first annular support 3211; at least two third filter screens 3212 are provided, spaced apart circumferentially along the first annular support 3211; similarly, at least two fourth filter screens 3222 are provided, spaced apart circumferentially along the second annular support 3221.

[0095] During dishwasher operation, when washing water and residue flow to the second filter element 32, the arrangement of multiple first residue guide ports 3203 allows larger residues to enter the first residue collection chamber 3201 more evenly and efficiently. From a hydrodynamic perspective, multiple guide ports can disperse the impact force of water flow and residue, preventing residue accumulation or blockage due to excessive pressure at a single guide port. Multiple third filter screens 3212 are spaced circumferentially along the first annular support 3211, increasing the filtration area for residues entering the first residue collection chamber 3201, improving filtration efficiency, and enabling faster interception and separation of residues. Similarly, multiple fourth filter screens 3222 are spaced circumferentially along the second annular support 3221, expanding the filtration range for residues entering the second residue collection chamber 3202, ensuring a fine filtration effect for smaller residues. This optimized arrangement of quantity and distribution makes the filter device 30 more efficient and stable in processing residues.

[0096] In one embodiment, such as Figure 1 As shown, the dishwasher also includes a divider 20, which is installed inside the inner tub 10 to divide the originally single washing chamber 100 into an upper washing chamber 101 and a lower washing chamber 102. The divider 20 can be a partition, the shape and size of which are adapted to the inner tub 10. It can be made of materials such as plastic or metal and is installed on the inner tub 10 by means of snap-fit, bolt connection or welding to ensure the stability and sealing of the separation.

[0097] During dishwasher operation, the upper and lower washing chambers 102 are relatively independent. Users can place different types of tableware in the upper washing chamber 101 and the lower washing chamber 102 according to their type, size, and quantity. For example, smaller, more delicate tableware, such as teacups and small bowls, can be placed in the upper washing chamber 101; larger, more greasy tableware, such as large plates and pots, can be placed in the lower washing chamber 102. This partitioned design allows the dishwasher to wash different types of tableware, improving the targeted and efficient washing process.

[0098] In this embodiment, the filter device 30 is installed at the bottom of the partition 20 and / or the lower washing chamber 102. When the filter device 30 is installed alone at the bottom of the partition 20 or the lower washing chamber 102, the filter device 30 can independently filter the washing water in the upper washing chamber 101 or the lower washing chamber 102. When the filter device 30 is installed at the bottom of both the partition 20 and the lower washing chamber 102, the filter device 30 can simultaneously filter the washing water flowing down from both the upper and lower washing chambers 102. The connection between the filter device 30 and the bottom of the partition 20 or the lower washing chamber 102 can be achieved by snap-fit, bolt connection, or integrated molding, etc., to ensure a firm connection and good sealing, preventing washing water leakage.

[0099] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A filter device installed in a washing chamber of a dishwasher, the filter device comprising: a first filter member comprising a first filter layer and a second filter layer arranged in a spaced-apart manner, the first filter layer and the second filter layer cooperating to form a slag flow channel; a second filter member penetrating the first filter layer and the second filter layer, the second filter member comprising a third filter layer and a fourth filter layer arranged in a spaced-apart manner, the third filter layer forming a first slag collection chamber communicating with the washing chamber, the fourth filter layer being arranged around a circumferential side of the third filter layer and cooperating with the third filter layer to form a second slag collection chamber, the second slag collection chamber communicating with the slag flow channel.

2. The filter device of claim 1, wherein, The first filter layer and the second filter layer are arranged in an inclined downward manner toward the second filter member.

3. The filter device of claim 2, wherein, The first filter layer comprises a first filter screen, and the second filter layer comprises a second filter screen, the second filter screen having a mesh number greater than or equal to that of the first filter screen.

4. The filter device of claim 3, wherein, The third filter layer comprises: a first annular support having a first slag guide opening in a circumferential wall thereof, the first slag guide opening being higher than an end of the first filter layer close to the second filter member for guiding slag into the first slag collection chamber; and a third filter screen arranged in the circumferential wall of the first annular support and below the slag guide opening.

5. The filter device of claim 4, wherein, The fourth filter layer comprises: a second annular support arranged around the first annular support, and an open circumferential edge of the second annular support being lower than the first slag guide opening; and a fourth filter screen arranged in a circumferential wall of the second annular support.

6. The filter device of claim 5, wherein, The circumferential wall of the first annular support further has a flange below the first slag guide opening, the flange cooperating with the open circumferential edge of the second annular support to form a second slag guide opening, the second slag guide opening communicating with the slag flow channel.

7. The filter device of claim 6, wherein, The flange is connected to the first filter layer, and the open circumferential edge of the second annular support is connected to the second filter layer.

8. The filter device of claim 5, wherein, The fourth filter screen has a mesh number greater than or equal to that of the third filter screen; and / or, the third filter screen has a mesh number greater than that of the second filter screen.

9. The filter device of claim 5, wherein, The first slag guide opening is arranged in at least two, the two first slag guide openings being arranged in a spaced-apart manner along a circumferential direction of the first annular support; and / or, the third filter screen is arranged in at least two, the two third filter screens being arranged in a spaced-apart manner along a circumferential direction of the first annular support; and / or, the fourth filter screen is arranged in at least two, the two fourth filter screens being arranged in a spaced-apart manner along a circumferential direction of the second annular support.

10. A dishwasher, characterized in that comprising: a tub forming a washing chamber; the filter device according to any one of claims 1 to 9, installed in the washing chamber; a drainage waterway communicating with the first slag collection chamber and the second slag collection chamber for draining slag and wastewater; and a washing waterway communicating with the washing chamber via the filter device. Further comprising a partition member installed in the tub and separating the washing chamber into an upper washing chamber and a lower washing chamber, the filter device being installed in the partition member and / or a bottom of the lower washing chamber.

11. The warewash machine of claim 10, wherein, ​

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