Filtering device and dish washing machine

Abstract

The dish washing machine is provided with a drainage waterway and a washing waterway, the filtering device is installed in a washing inner cavity of the dish washing machine, the filtering device comprises a second filtering piece, an isolation cover and a driving mechanism, the second filtering piece is provided with a residue collecting cavity, and the residue collecting cavity communicates with the drainage waterway; a second filter screen is arranged on the cavity wall of the residue collecting cavity, and the second filter screen is communicated with the residue collecting cavity and the washing water path; the isolation cover is movably arranged in the residue collecting cavity and is provided with a residue collecting position and a residue separating position, when the isolation cover is located at the residue collecting position, the isolation cover communicates the residue collecting cavity with the washing inner cavity, and when the isolation cover is located at the residue separating position, the isolation cover blocks the second filter screen and / or separates the washing inner cavity from the drainage waterway; the driving mechanism is connected with the isolation cover and used for driving the isolation cover to move between the slag collecting position and the slag isolating position. The peculiar smell in the drainage waterway can be effectively isolated, and the use experience of a user 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. Background Technology

[0002] In related technologies, the filter is a crucial component of the dishwasher structure, primarily responsible for filtering food residue and other impurities generated during the washing process. The filtered wash water enters the washing water circuit for circulation, while the residue in the filter is discharged through the drain circuit.

[0003] However, existing filtration devices struggle to isolate the odors produced by residues, impacting the user experience. Utility Model Content

[0004] This application provides a filtration device and a dishwasher that can isolate odors from food residue and improve the user experience.

[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 dishwasher having a drainage water path and a washing water path, the filtering device comprising:

[0006] The second filter element has a residue collection chamber, which is connected to the drainage water passage. The wall of the residue collection chamber is provided with a second filter screen, which is connected to the residue collection chamber and the washing water passage.

[0007] An isolation cover, movably disposed in the residue collection chamber, has a residue collection position and a residue separation position. When the isolation cover is in the residue collection position, it connects the residue collection chamber and the washing chamber. When the isolation cover is in the residue separation position, it blocks the second filter screen and / or isolates the washing chamber and the drainage path.

[0008] A drive mechanism, connected to the isolation cover, is used to drive the isolation cover to move between the slag collection position and the slag separation position.

[0009] In some embodiments, the drive mechanism is driven to the isolation cover for driving the isolation cover to move along the height direction of the second filter element.

[0010] In some embodiments, the drive mechanism includes:

[0011] The motor is mounted on the outside of the second filter element; and

[0012] The transmission screw has one end connected to the output end of the motor, and the other end extends into the residue collection chamber and is connected to the isolation cover.

[0013] In some embodiments, the isolation cover includes a top wall and a peripheral wall connected to the periphery of the top wall. The top wall is provided with a first shielding portion, and the peripheral wall is provided with a slag guide port. When the isolation cover is in the slag collection position, the slag guide port is at least partially higher than the top surface of the second filter element to connect the residue collection chamber and the washing inner chamber.

[0014] When the isolation cover is in the slag-separating position, the periphery of the first shielding part abuts against the cavity wall of the slag collection chamber to isolate the washing inner cavity and the drainage waterway.

[0015] In some embodiments, the top surface of the first shielding portion is a first guide surface with an incline, and the first guide surface is arranged inclined downward from the center toward the edge.

[0016] In some embodiments, the slope φ of the first guide surface satisfies: 0°<Φ≤45°.

[0017] In some embodiments, the peripheral wall of the isolation cover is further provided with a second shielding part, which is located below the slag guide port and abuts against the cavity wall of the residue collection chamber. When the isolation cover is in the slag-separating position, the second shielding part blocks the second filter screen.

[0018] In some embodiments, the height dimension of the second shielding part is H1, and the height dimension of the second filter is H2, wherein H1 ≥ H2.

[0019] In some embodiments, the wall of the residue collection chamber is further provided with a third shielding part, which is located above the second filter screen;

[0020] When the isolation cover is in the slag-blocking position, the third shielding part abuts against the periphery of the first shielding part and blocks the slag guide port.

[0021] In some embodiments, the height dimension of the third shielding part is H3, and the height dimension of the slag guide port is H4, wherein H3 ≥ H4.

[0022] In some embodiments, the wall of the residue collection chamber is further provided with a third filter screen, which is located above the third shielding part;

[0023] When the isolation cover is in the slag-blocking position, the lowest position of the third filter screen is higher than the first shielding part, and cooperates with the first shielding part to form a slag-settling groove.

[0024] In some embodiments, the filtering device further includes a first filter element having an opening in the middle, and a second filter element passing through the opening.

[0025] In some embodiments, the first filter element has a second flow guiding surface that is inclined downward toward the opening, and the second flow guiding surface is provided with a first filter screen that connects the washing inner cavity and the washing water path.

[0026] A second aspect of this application provides a dishwasher, comprising:

[0027] The inner liner forms a washing cavity;

[0028] The filter device described above is installed in the washing cavity;

[0029] A drainage channel, connected to the residue collection chamber, is used to discharge residue and wastewater; and

[0030] The washing water path is connected to the residue collection chamber via the second filter screen.

[0031] 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 in the partition and / or at the bottom of the lower washing chamber.

[0032] In the filtration device provided in this application embodiment, an isolation cover is movably disposed in the residue collection chamber of the second filter element. When the washing program is started, the drive mechanism drives the isolation cover to the residue collection position. At this time, the isolation cover connects the residue collection chamber and the washing inner chamber. The washing water passes sequentially through the washing water path, the washing inner chamber, the residue collection chamber, and the second filter screen. Food residue generated during washing is collected into the residue collection chamber for subsequent discharge through the drainage path. When the washing program is in the rinsing stage or at the end of the washing program, the drive mechanism drives the isolation cover to the residue separation position. At this time, the isolation cover can block the second filter screen, thereby blocking the channel between the residue collection chamber and the washing water path; the isolation cover can also isolate the washing inner chamber and the drainage path; the isolation cover can also block the second filter screen and isolate the washing inner chamber and the drainage path, thereby blocking the odor transmission path between the residue collection chamber, the drainage path, and the washing inner chamber, effectively preventing the odor generated by residue residue in the residue collection chamber and the drainage path from escaping, thus improving the user experience. Attached Figure Description

[0033] 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.

[0034] Figure 1This is a schematic diagram of the structure of a dishwasher provided in an embodiment of this application;

[0035] Figure 2 A schematic diagram of the separator, filter device, and spray arm provided in the embodiments of this application;

[0036] Figure 3 This is a schematic diagram of the structure of the filtration device provided in the embodiments of this application;

[0037] Figure 4 Another schematic diagram of the filtering device provided in the embodiments of this application;

[0038] Figure 5 This is a schematic diagram of the internal structure of the isolation cover provided in an embodiment of this application;

[0039] Figure 6 This is a schematic diagram of the internal structure of the first and second filters provided in the embodiments of this application;

[0040] Figure 7 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;

[0041] Figure 8 This is another internal structural diagram of the separator, filter device, drainage water passage and washing water passage provided in the embodiments of this application.

[0042] Explanation of icon numbers:

[0043] 10. Inner tank; 100. Washing chamber; 101. Upper washing chamber; 102. Lower washing chamber; 20. Divider; 30. Filter device; 31. First filter element; 311. Second guide surface; 32. Second filter element; 321. Second filter screen; 322. Third shielding part; 323. Third filter screen; 3201. Residue collection chamber; 33. Isolation cover; 331. First shielding part; 3311. First guide surface; 3312. Sludge groove; 332. Second shielding part; 3301. Sludge guide port; 34. Drive mechanism; 341. Motor; 342. Transmission screw; 40. Drainage water channel; 41. Drainage pump; 42. Drainage pipe; 50. Washing water channel; 51. Washing pump; 52. Spray arm; 53. Water storage cup.

[0044] 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

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] The filter is a key component in a dishwasher. During operation, food residue and other impurities from the dishes are mixed into the wash water. The filter effectively filters these impurities, ensuring the cleanliness of the wash water. This allows the clean water to play a more effective role in subsequent wash cycles, significantly improving the washing effect and ensuring the cleanliness of the dishes.

[0051] However, in actual use, although the filter can perform the basic function of filtering residue, it is difficult to isolate the odor produced by the residue. When food residue accumulates in the filter, it will gradually ferment and deteriorate over time, producing an unpleasant odor, which seriously affects the user experience.

[0052] Therefore, this application provides a dishwasher that can isolate odors from food residue and improve the user experience.

[0053] Specifically, please refer to Figures 1 to 4 , 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;

[0054] Figure 3 This is a schematic diagram of the structure of the filter device 30 provided in this embodiment; Figure 4 This is another structural schematic diagram of the filtration device 30 provided in this embodiment.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] The filter device 30 in this embodiment is installed in the washing cavity 100 and is a key component of the dishwasher, including a second filter element 32, an isolation cover 33 and a drive mechanism 34.

[0062] The second filter element 32 has a residue collection chamber 3201, which is used to collect food residue. A second filter screen 321 is provided on the wall of the residue collection chamber 3201. The filter screen can be made of stainless steel, plastic, etc., and its mesh size is designed according to the size of the residue particles to be intercepted, so as to effectively intercept common food residues such as rice grains and vegetable scraps.

[0063] The second filter element 32 can be fixed in a suitable position in the washing cavity 100 by means of welding, snap-fitting or bolting to ensure its stability and sealing.

[0064] When the dishwasher is operating, the washing water in the washing water path 50 carries food residue into the washing chamber 100 to clean the dishes. The washing water containing residue then flows into the residue collection chamber 3201. As the water flows through the second filter 321, the filter traps the food residue, keeping it in the residue collection chamber 3201. The relatively clean washing water then returns to the washing water path 50 for reuse. This improves the cleanliness of the washing water, reduces secondary contamination of the dishes by residue, and enhances the washing effect. Simultaneously, concentrating the residue in the residue collection chamber 3201 facilitates subsequent drainage through the drain path 40, reducing the risk of clogging the drain path 40.

[0065] In this embodiment, the isolation cover 33 is movably disposed within the residue collection chamber 3201. Its shape and size are adapted to the residue collection chamber 3201 and the second filter screen 321, and it can move between the residue collection position and the residue separation position. The material of the isolation cover 33 should have certain corrosion resistance and sealing performance, such as plastic or rubber.

[0066] The isolation cover 33 can be moved using guide rails, slides, lead screws, etc., to ensure its smooth and accurate movement.

[0067] In this embodiment, the isolation cover 33 has two states: a slag collection position and a slag separation position.

[0068] like Figure 3 As shown, the isolation cover 33 is in the residue collection position: when the dishwasher starts the washing program and enters the main wash stage, the drive mechanism 34 drives the isolation cover 33 to move to the residue collection position. In this position, the isolation cover 33 connects the residue collection chamber 3201 and the washing inner cavity 100, allowing the washing water to carry food residue smoothly into the residue collection chamber 3201. This effectively collects the residue generated during the washing process, preventing the residue from continuously circulating in the washing inner cavity 100, and further improving the washing effect.

[0069] like Figure 4As shown, the isolation cover 33 is in the sludge-separating position: when the washing program enters the rinsing stage or ends, the drive mechanism 34 drives the isolation cover 33 to move to the sludge-separating position. At this time, the isolation cover 33 can block the second filter screen 321, thereby blocking the channel between the sludge collection chamber 3201 and the washing water channel 50; the isolation cover 33 can also isolate the washing inner cavity 100 and the drainage water channel 40; the isolation cover 33 can also block the second filter screen 321 and isolate the washing inner cavity 100 and the drainage water channel 40. For example, in the rinsing stage, the isolation cover 33 blocks the second filter screen 321 and blocks the channel between the sludge collection chamber 3201 and the washing water channel 50. This can prevent sludge and odors in the sludge collection chamber 3201 from mixing into the rinsing water, ensuring that clean washing water is used for circulating rinsing and improving the rinsing effect. After the washing cycle is completed, the isolation cover 33 isolates the odor transmission path between the residue collection chamber 3201, the drainage water path 40 and the washing chamber 100, which can effectively prevent the odor caused by residue residue in the residue collection chamber 3201 and the drainage water path 40 from escaping, avoid odor pollution of the washing chamber 100 and the surrounding environment, and significantly improve the user experience.

[0070] In this embodiment, the drive mechanism 34 is connected to the isolation cover 33 and is used to drive the isolation cover 33 to move between the slag collection position and the slag separation position. The drive mechanism 34 can take various forms such as an electric push rod, a motor gear transmission, or a cylinder.

[0071] In one embodiment, the drive mechanism 34 is drively connected to the isolation cover 33 for driving the isolation cover 33 to move along the height direction of the second filter element 32. Exemplarily, the drive mechanism 34 includes a motor 341 and a drive screw 342. The motor 341 is mounted on the outside of the second filter element 32, and the drive screw 342 extends along the height direction of the second filter element 32. One end of the drive screw 342 is connected to the output end of the motor 341, and the other end extends into the residue collection chamber 3201 and is connected to the isolation cover 33.

[0072] The motor 341 is mounted on the outside of the second filter element 32 by bolts or other fixing methods to ensure a secure installation. The transmission screw 342 is connected to the output end of the motor 341 by a coupling or other means, and the end of the screw that extends into the residue collection chamber 3201 is threadedly connected to the isolation cover 33 to ensure the stability of the transmission.

[0073] When the dishwasher control system issues a command, the motor 341 starts, driving the transmission screw 342 to rotate. Since the transmission screw 342 is connected to the isolation cover 33, the rotational motion of the screw is converted into linear movement of the isolation cover 33 along the height direction of the second filter element 32, which can accurately drive the isolation cover 33 to the slag collection position and the slag separation position.

[0074] In this embodiment, the drainage channel 40 is connected to the residue collection chamber 3201 of the filter device 30. For example, as shown... Figure 7 As shown, the drainage path 40 includes a drain pump 41 and a drain pipe 42. The drain pipe 42 is made of a corrosion-resistant material, such as plastic. The drain pump 41 provides the power for drainage. The drain pipe 42 is connected to the residue collection chamber 3201 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 42 and is also electrically connected to the dishwasher's control system to achieve automatic drainage control.

[0075] After the washing cycle is completed, the drain pump 41 starts to discharge the residue and wastewater in the residue collection chamber 3201 into the dishwasher through the drain pipe 42, thereby keeping the inside of the dishwasher clean and preventing residue from accumulating and causing odors and affecting the next wash.

[0076] In this embodiment, the washing water path 50 is connected to the residue collection chamber 3201 via the second filter screen 321. 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 of the washing inner chamber 100, and the filter device 30 is installed in the water storage cup 53. The water inlet of the washing pump 51 is connected to the water storage cup 53, and the water outlet of the washing pump 51 is connected to the spray arm 52.

[0077] The water reservoir 53 can be connected to the bottom of the washing chamber 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 sealed pipe. The spray arm 52 is installed inside the washing chamber 100 by rotation or fixation to ensure that the washing water is evenly sprayed onto the tableware.

[0078] 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 3201, 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.

[0079] In this embodiment, the dishwasher's washing program includes a main wash stage and a rinsing stage.

[0080] like Figure 7 As shown, Figure 7The dashed arrows indicate the flow direction of washing water and food residue. During the main wash, the dishwasher's control system issues a command, and the drive mechanism 34 drives the isolation cover 33 to move to the residue collection position. At this time, the isolation cover 33 connects the residue collection chamber 3201 and the washing chamber 100. The washing pump 51 starts, delivering washing water and detergent to the washing water path 50, which is then sprayed onto the dishes in the washing chamber 100 via the spray arm 52. As the washing water rinses the dishes, it carries food residue into the residue collection chamber 3201. When the water flows through the second filter 321, the filter intercepts the food residue, keeping it in the residue collection chamber 3201, while the relatively clean washing water returns to the washing water path 50 for recycling. In this way, during the main wash, food residue is effectively collected in the residue collection chamber 3201, preventing residue from circulating in the washing chamber 100 and improving the washing effect.

[0081] like Figure 8 As shown, Figure 8 The dotted arrows indicate the flow direction of washing water and food residue. After the main wash stage, the rinsing stage begins. The dishwasher's control system issues a command, and the drive mechanism 34 drives the isolation cover 33 to the residue-separating position. At this time, the isolation cover 33 blocks the second filter screen 321 and isolates the washing chamber 100 from the drainage water path 40. The water pump restarts, delivering clean water to the washing water path 50, which rinses the dishes through the spray arm 52. Because the isolation cover 33 isolates the residue collection chamber 3201 from the washing water path 50, the rinsing water is not contaminated by residue and odors, thus ensuring the rinsing effect.

[0082] The washing program also includes a draining phase. After the rinsing phase ends, the draining phase begins, and the drain pump 41 starts to discharge the residue and wastewater in the residue collection chamber 3201 into the dishwasher through the drain pipe 42.

[0083] It is evident that this embodiment has the following beneficial effects:

[0084] First, food residue is intercepted by the second filter 321 and the residue is collected by the isolation cover 33 during the main wash stage, which prevents the residue from circulating during the washing process and keeps the washing water clean, thereby improving the cleanliness of the tableware and providing users with cleaner tableware.

[0085] Secondly, the isolation cover 33 moves to the residue separation position during the rinsing stage and after washing, blocking the odor transmission path between the residue collection chamber 3201, the drainage water path 40 and the washing inner chamber 100, effectively preventing odor from escaping, maintaining a fresh internal environment for the dishwasher, and improving the user experience.

[0086] Then, the second filter element 32 concentrates food residue in the residue collection chamber 3201, which is convenient for discharge through the drainage channel 40, reducing the possibility of residue entering the drainage channel 40 and causing blockage, and reducing maintenance costs and usage risks.

[0087] Finally, the circulating design of the washing water circuit 50 allows the washing water to be used multiple times, improving the utilization rate of water resources and reducing the energy consumption and water consumption of the dishwasher.

[0088] Please see Figures 5 to 8 , Figure 5 This is a schematic diagram of the internal structure of the isolation cover 33 provided in this embodiment; Figure 6 This is a schematic diagram of the internal structure of the first filter element 31 and the second filter element 32 provided in this embodiment;

[0089] Figure 7 A schematic diagram of the internal structure of the separator 20, filter device 30, drainage water passage 40 and washing water passage 50 provided in this embodiment; Figure 8 Another internal structural diagram of the separator 20, filter device 30, drainage water passage 40 and washing water passage 50 provided in this embodiment.

[0090] In some of these embodiments, such as Figure 5 As shown, the isolation hood 33 includes a top wall and a peripheral wall connected to the periphery of the top wall. The top wall has a first shielding portion 331, and the peripheral wall has a slag guide port 3301. The top surface of the first shielding portion 331 is a first guide surface 3311 with an incline, which is inclined downward from the center toward the edge, and the incline φ satisfies 0°<Φ≤45°. The peripheral wall of the isolation hood 33 also has a second shielding portion 332, located below the slag guide port 3301.

[0091] like Figure 7 As shown, when the isolation cover 33 is in the slag collection position, the slag guide port 3301 is at least partially higher than the top surface of the second filter element 32, thereby connecting the slag collection chamber 3201 and the washing inner chamber 100. The inclined design of the first guide surface 3311 facilitates the flow of slag along its direction to the slag guide port 3301, allowing food residue carried in the washing water to enter the slag collection chamber 3201 more smoothly, avoiding the accumulation and circulation of residue in the washing inner chamber 100, improving the slag collection efficiency, and thus enhancing the washing effect.

[0092] like Figure 8As shown, when the isolation cover 33 is in the residue-separating position, the periphery of the first shielding part 331 abuts against the cavity wall of the residue collection chamber 3201, isolating the washing inner cavity 100 and the drainage water passage 40, effectively preventing odors from emanating from the drainage water passage 40 and the residue collection chamber 3201 into the washing inner cavity 100. At the same time, the second shielding part 332 blocks the second filter screen 321, and the height dimension H1 of the second shielding part 332 satisfies H1≥H2 (H2 is the height dimension of the second filter screen 321), ensuring that the second filter screen 321 is completely blocked, preventing residues and odors from entering the washing water passage 50 through the filter screen.

[0093] like Figure 6 As shown, the wall of the residue collection chamber 3201 is provided with a third shielding part 322, located above the second filter screen 321. When the isolation cover 33 is in the residue-separating position, the third shielding part 322 abuts against the periphery of the first shielding part 331 and blocks the residue guide port 3301. The height dimension H3 of the third shielding part 322 satisfies H3≥H4 (H4 is the height dimension of the residue guide port 3301), further enhancing the isolation effect between the residue collection chamber 3201 and the washing inner cavity 100, preventing odor and residue leakage.

[0094] Furthermore, the wall of the residue collection chamber 3201 is also provided with a third filter screen 323, located above the third shielding part 322. For example... Figure 4 and Figure 8 As shown, when the isolation cover 33 is in the slag-separating position, the lowest point of the third filter screen 323 is higher than the first shielding part 331, and cooperates with the first shielding part 331 of the isolation cover 33 to form a slag-separating groove 3312. During the rinsing stage, the washing water flows through the slag-separating groove 3312, passes through the third filter screen 323 and enters the water storage cup 53 for circulating rinsing. The residue generated during the rinsing process is collected in the slag-separating groove 3312, further improving the cleanliness of the washing water and ensuring the rinsing effect.

[0095] like Figure 6 As shown, in some embodiments, the filtration device 30 further includes a first filter element 31. The first filter element 31 has an opening in the middle, through which a second filter element 32 passes. The first filter element 31 has a second guide surface 311, which is inclined downward toward the opening, and a first filter screen is provided on the second guide surface 311. The first filter screen connects the washing inner cavity 100 and the washing water passage 50.

[0096] The first filter element 31 can be fixed to the bottom of the washing cavity 100 by means of snap-fit ​​or bolt connection to ensure its stability. The first filter screen can be made of stainless steel, plastic or other materials, and its mesh size is designed according to the size of the residue particles to be filtered, so as to effectively intercept larger food residues, such as bones and large pieces of vegetable stalks.

[0097] The first filter element 31 is used for the initial filtration of the washing water. When the dishwasher is working, the washing water carrying food residue flows from the washing chamber 100 into the first filter element 31. After being filtered by the first filter screen, a portion of the washing water directly enters the water storage cup 53 of the washing water path 50, providing a relatively clean water source for subsequent washing cycles. The remaining washing water and residue flow along the inclined second guide surface 311, through the residue guide port 3301, into the residue collection chamber 3201. This increases the filtration efficiency, as the initial screening of the washing water by the first filter element 31 intercepts larger residues in advance, reducing the burden on subsequent filtration. At the same time, it ensures a sufficient and stable circulation of the circulating water, because the water that has undergone initial filtration can be replenished into the washing water path 50 in a timely manner, maintaining the continuity of the water flow.

[0098] In this embodiment, the inner liner 10 can form one or more cavities to accommodate the washing requirements of different tableware.

[0099] In one embodiment, such as Figure 1 As shown, the dishwasher also includes a divider 20, which is installed in the inner tub 10 and divides the washing chamber 100 into an upper washing chamber 101 and a lower washing chamber 102. This design allows the dishwasher to handle different types of tableware at the same time. For example, the upper washing chamber 101 can be used to wash small tableware such as teacups and small bowls, while the lower washing chamber 102 can accommodate larger tableware such as large plates and pots, improving the versatility and practicality of the dishwasher.

[0100] The separator 20 is installed inside the inner tank 10, serving to separate the washing cavity 100. Its material can be high-strength plastic or metal to ensure structural stability and durability. The separator 20 can be connected to the inner tank 10 via snap-fit, bolt connection, or other methods.

[0101] The divider 20 divides the washing chamber 100 into an upper washing chamber 101 and a lower washing chamber 102, enabling the dishwasher to employ different washing strategies for different types of tableware. For example, the flow rate, pressure, and washing time of the washing water can be adjusted according to the number and degree of soiling of the tableware in the upper and lower washing chambers 102, thereby improving washing efficiency and effectiveness.

[0102] The filter device 30 can be installed on the partition 20, or at the bottom of the lower washing chamber 102, or at the bottom of both the partition 20 and the lower washing chamber 102.

[0103] 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 filtering device installed in the washing cavity of a dishwasher, the dishwasher having a drainage water path and a washing water path, characterized in that, The filtration device includes: The second filter element has a residue collection chamber, which is connected to the drainage water passage. The wall of the residue collection chamber is provided with a second filter screen, which is connected to the residue collection chamber and the washing water passage. An isolation cover, movably disposed in the residue collection chamber, has a residue collection position and a residue separation position. When the isolation cover is in the residue collection position, it connects the residue collection chamber and the washing chamber. When the isolation cover is in the residue separation position, it blocks the second filter screen and / or isolates the washing chamber and the drainage path. A drive mechanism, connected to the isolation cover, is used to drive the isolation cover to move between the slag collection position and the slag separation position.

2. The filtration device according to claim 1, characterized in that, The drive mechanism is connected to the isolation cover and is used to drive the isolation cover to move along the height direction of the second filter element.

3. The filtration device according to claim 2, characterized in that, The drive mechanism includes: The motor is mounted on the outside of the second filter element; and The transmission screw has one end connected to the output end of the motor, and the other end extends into the residue collection chamber and is connected to the isolation cover.

4. The filtration device according to claim 1, characterized in that, The isolation cover includes a top wall and a peripheral wall connected to the periphery of the top wall. The top wall is provided with a first shielding part, and the peripheral wall is provided with a slag guide port. When the isolation cover is in the slag collection position, the slag guide port is at least partially higher than the top surface of the second filter element to connect the residue collection chamber and the washing inner chamber. When the isolation cover is in the slag-separating position, the periphery of the first shielding part abuts against the cavity wall of the slag collection chamber to isolate the washing inner cavity and the drainage waterway.

5. The filtration device according to claim 4, characterized in that, The top surface of the first shielding part is a first guide surface with an inclination, and the first guide surface is inclined downward from the middle towards the edge.

6. The filtration device according to claim 5, characterized in that, The slope Φ of the first guide surface satisfies: 0°<Φ≤45°.

7. The filtration device according to claim 4, characterized in that, The peripheral wall of the isolation cover is also provided with a second shielding part. The second shielding part is located below the slag guide port and abuts against the cavity wall of the residue collection chamber. When the isolation cover is in the slag-separating position, the second shielding part blocks the second filter screen.

8. The filtration device according to claim 7, characterized in that, The height dimension of the second shielding part is H1, and the height dimension of the second filter is H2, wherein H1 ≥ H2.

9. The filtration device according to claim 4, characterized in that, The wall of the residue collection chamber is also provided with a third shielding part, which is located above the second filter screen; When the isolation cover is in the slag-blocking position, the third shielding part abuts against the periphery of the first shielding part and blocks the slag guide port.

10. The filtration device according to claim 9, characterized in that, The height of the third shielding part is H3, and the height of the slag guide port is H4, wherein H3 ≥ H4.

11. The filtration device according to claim 9, characterized in that, The wall of the residue collection chamber is also provided with a third filter screen, which is located above the third shielding part; When the isolation cover is in the slag-blocking position, the lowest position of the third filter screen is higher than the first shielding part, and cooperates with the first shielding part to form a slag-settling groove.

12. The filtration device according to claim 4, characterized in that, It also includes a first filter element, which has an opening in the middle, and a second filter element passing through the opening.

13. The filtration device according to claim 12, characterized in that, The first filter element has a second flow guiding surface, which is inclined downward toward the opening, and the second flow guiding surface is provided with a first filter screen, which connects the washing inner cavity and the washing water path.

14. A dishwasher, characterized in that, include: The inner liner forms a washing cavity; The filtration device as described in any one of claims 1 to 13 is installed in the washing cavity; The drainage channel is connected to the residue collection chamber and is used to discharge residue and sewage; as well as The washing water path is connected to the residue collection chamber via the second filter screen.

15. The dishwasher according to claim 14, characterized in that, It also includes a separator, which is installed in the inner tank and divides the washing cavity into an upper washing cavity and a lower washing cavity, and the filter device is installed at the bottom of the separator and / or the lower washing cavity.

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