Filter system for dishwasher and dishwasher having the same

Abstract

The application discloses a filter system of a dishwasher and the dishwasher with the filter system, which comprises a circulating water path and a drainage water path, and further comprises at least three filter parts; wherein at least one filter part is shared by the circulating water path and the drainage water path; at least another filter part cooperates with the filter part shared by the circulating water path and the drainage water path to form a filter system of the circulating water path; and at least one more filter part cooperates with the filter part shared by the circulating water path and the drainage water path to form a filter system of the drainage water path. The filter system of the dishwasher and the dishwasher with the filter system can effectively solve the problem of the dishwasher being blocked when washing dishes and vegetables containing a large amount of particles, improve the service life of the dishwasher, directly collect the particles that cannot be discharged by the drainage pump, facilitate cleaning, and improve the cleanliness of the dishwasher.

Description

Technical Field

[0001] The present invention belongs to the technical field of household appliances, and in particular relates to a filter system for a dishwasher and a dishwasher having the filter system. Background Art

[0002] Currently, most dishwasher filters consist of two parts: a coarse filter and a fine filter. These two parts are cylindrical in shape, with different diameters. The coarse filter is assembled into the fine filter through an assembly structure. However, the fine filter currently lacks any filtration structure at the bottom, connecting directly to the interior of the pump. This allows a large amount of particulate matter to pass through the coarse filter and enter the drain pump directly, preventing the pump from completely removing it. This can lead to particulate matter accumulation and blockage. When a dishwasher is washing dishes and vegetables containing large amounts of particulate matter, the water flowing through the coarse filter directly reaches the drain pump inlet. This large amount of particulate matter entering the drain pump increases the pump's load, and some particulate matter that cannot be discharged in time accumulates in the dishwasher's sump, causing drainage problems.

[0003] Chinese patent application number CN201810302070.0 discloses a dishwasher and its filtration system, wherein the dishwasher includes a water collection cup and a washing pump, wherein the washing pump is used to pump water from the water collection cup. The filtration system according to an embodiment of the present invention includes: a planar filter component, wherein the planar filter component is arranged above the water collection cup; and a cylindrical filter component, wherein the cylindrical filter component is cylindrically configured and rotatably arranged in the water collection cup, and the cylindrical filter component rotates when the washing pump pumps water.

[0004] Chinese patent application number CN201810302061.1 discloses a dishwasher and its filtration system. The dishwasher includes a water collection cup, and the filtration system comprises a cylindrical filter element rotatably disposed within the water collection cup, and a motor for rotating the cylindrical filter element.

[0005] Although the above-mentioned prior art proposes a solution for a dishwasher filtration system, which solves the problem of the washing water in the dishwasher forming circulating spray water through a washing pump to wash the items to be washed in the dishwasher, there is still a problem that during the filtration process, excessive food residues such as particulate matter are mixed into the washing water and eventually accumulate in the filtration system. When the dishwasher is draining, a large amount of food residues such as particulate matter directly enters the drain pump, making it impossible for the drain pump to completely remove the waste, resulting in the accumulation of particulate matter and clogging the drain pump.

[0006] Therefore, it is necessary to improve the shortcomings and defects of the existing technology and provide a filtering system for a dishwasher and a dishwasher with the filtering system. By setting a three-layer filtering system with a filtering structure at the bottom, the problem of clogging the drainage pump when the dishwasher is washing tableware and vegetables containing a large amount of particulate matter can be effectively solved, thereby improving the overall life of the dishwasher; at the same time, it can directly collect particulate matter that cannot be removed by the drainage pump, facilitate cleaning, and improve the cleanliness of the inside of the dishwasher.

[0007] In view of this, the present invention is proposed. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a filter system for a dishwasher that can overcome the above problems or at least partially solve the above problems.

[0009] Another object of the present invention is to provide a dishwasher having the filtering system.

[0010] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a filtration system for a dishwasher, the dishwasher includes a circulating water path and a drainage water path,

[0011] Also includes at least three filter parts;

[0012] in,

[0013] At least one filter section, shared by the circulating water circuit and the drainage water circuit;

[0014] At least one other filter unit cooperates with the filter unit shared by the circulating water channel and the drainage water channel to form a filtering system for the circulating water channel;

[0015] At least one more filter unit cooperates with the filter unit shared by the circulating water channel and the drainage water channel to form a filtration system for the drainage water channel.

[0016] Furthermore, the filtration system includes a first filter section, a second filter section, and a third filter section;

[0017] The first filter portion is at least partially sleeved inside the second filter portion;

[0018] The third filter portion is arranged on a side of the second filter portion close to the bottom;

[0019] In one embodiment, the washing water in the dishwasher flows into the first filter part from outside the filter system;

[0020] After passing through the first filter part, the washing water enters the second filter part.

[0021] Also includes

[0022] A washing pump provided at the rear of the circulating water filtration system;

[0023] In one embodiment, the washing water in the dishwasher passes through the first filter part and the second filter part, and then forms circulating spray water under the action of the washing pump.

[0024] In addition, it also includes

[0025] A drainage pump provided at the rear of the drainage waterway filtration system;

[0026] In one embodiment, the washing water in the dishwasher passes through the first filter part and the third filter part, and then is discharged from the dishwasher under the action of a drainage pump.

[0027] At the same time, at least a portion of the first filter portion extends into the second filter portion to form a receiving tank for receiving impurities in the washing water;

[0028] The accommodating tank is provided with the protruding structure arranged toward the water inlet end of the first filter part;

[0029] In one embodiment, at least the protruding structure is provided with a structure for filtering washing water.

[0030] Furthermore, the second filter portion is at least sleeved on the outside of the receiving groove of the first filter portion;

[0031] At least a side wall of the second filter portion is provided with a structure for filtering washing water.

[0032] Furthermore, the third filter portion at least covers the bottom of the second filter portion to form a filter structure for filtering the washing water flowing out of the dishwasher;

[0033] In one embodiment, the outer edge of the third filter portion is provided with a guide structure extending toward the side where the first filter portion is located;

[0034] The guide structure has a tendency to extend from the periphery of the third filter part toward the center.

[0035] Further, at least the bottom of the second filter portion is rotatable;

[0036] The third filter portion is connected to the bottom of the second filter portion;

[0037] In one embodiment, at least one protruding claw is provided on a side of the third filter portion facing the location of the first filter portion.

[0038] Furthermore, the first filter portion and the second filter portion, as well as the second filter portion and the third filter portion, are detachably connected;

[0039] In one embodiment, the first filter portion and the second filter portion, as well as the second filter portion and the third filter portion, are connected by magnetic attraction or snap connection.

[0040] A dishwasher comprises any one of the above-mentioned filter systems for the dishwasher.

[0041] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0042] 1. By adding a bottom filter device to the bottom of the filter structure of the dishwasher, the present invention can effectively solve the problem of clogging the drainage pump when washing tableware and vegetables containing a large amount of particulate matter, thereby extending the life of the dishwasher. At the same time, it can directly collect particulate matter that cannot be removed by the drainage pump, making it easier to clean and improving the cleanliness of the inside of the dishwasher.

[0043] 2. A raised structure is provided in the first filter section to prevent a large amount of particles in the wash water from clogging the filter structure. The raised structure effectively diverts particles entering from the water inlet end of the first filter section to the side wall of the first filter section, while raising the water level of the filter structure to prevent particles from burying the filter structure.

[0044] 3. The third filter part set at the bottom of the second filter part can rotate, so that when too much particulate matter blocks the filter structure, the third filter part can stir the particulate matter by rotating to avoid clogging;

[0045] 4. A guide structure is provided around the periphery of the third filter to prevent excessive particles from falling out of the first filter and clogging the gaps in the equipment connection. At the same time, the guide structure also serves to guide particles and other impurities to the drainage pump.

[0046] 5. The first, second and third filter parts are connected by a detachable structure, and the detachable structure is snap-on or magnetic, which facilitates the user's disassembly and cleaning and improves the user experience.

[0047] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings, as part of this disclosure, are intended to provide a further understanding of the disclosure. The exemplary embodiments of the disclosure and their descriptions are intended to explain the disclosure and do not constitute undue limitations thereon. Obviously, the drawings described below are merely examples, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0049] In the attached figure:

[0050] Figure 1 It is a schematic diagram of the axial side of the filtration system structure of the present invention;

[0051] Figure 2 This is a first schematic diagram of a front cross-sectional view of the filtration system structure of the present invention;

[0052] Figure 3 This is a second schematic diagram of a front cross-sectional view of the filtration system structure of the present invention;

[0053] Figure 4 This is a schematic structural diagram of the first filter portion of the present invention;

[0054] Figure 5 It is a schematic structural diagram of the second filter portion of the present invention;

[0055] Figure 6 It is a schematic structural diagram of the third filter part of the present invention.

[0056] In the figure: 1. First filter part; 101. Receiving groove; 102. Protruding structure; 2. Second filter part; 3. Third filter part; 301. Protruding claw; 4. Washing pump; 5. Drain pump; 6. Guide structure.

[0057] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0059] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0060] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0061] Figure 1 This is a schematic diagram of the axial side of the filtration system structure of the present invention. Figure 1 The axial structure of the filter system of the dishwasher of the present invention can be seen in the figure. The first filter part 1 is placed inside the second filter part 2. A plurality of strip-shaped rib-shaped filter structures are arranged at intervals on the side wall of the first filter part 1. After the washing water filled with particulate matter in the dishwasher passes through the first filter part 1, the particulate matter is retained in the first filter part 1. The washing water filtered by the filter structure enters the second filter part 2. Figure 1 It can be seen that the side wall of the second filter part 2 is provided with a filtering structure composed of vertical ribs. The filtering structure of the second filter part 2 is relatively sparsely distributed than the filtering structure of the first filter part 1. The particulate matter is mainly collected by the first filter part 1, and the washing water passing through the second filter part 2 can be directly circulated back to the dishwasher from the washing pump 4; in addition, a third filter part 3 is also provided at the bottom of the second filter part 2. Since the washing water filtered out of the first filter part 1 still contains a certain degree of particulate matter, during the drainage process, a large amount of particulate matter will directly enter the drainage pump 5 after coarse filtration, making it impossible for the drainage pump 5 to completely eliminate the particulate matter, resulting in the accumulation of particulate matter and clogging the drainage pump 5. Therefore, the present invention provides a third filter part 3 to address this phenomenon.

[0062] Figure 2 and Figure 3 The first and second schematic diagrams of the main cross-sectional view of the filtration system structure of the present invention are shown in FIG. Figure 3 Most of the filtering structures in the first filter part 1 are omitted to facilitate observation of the overall structure of the filtering system. Figure 2 and Figure 3As can be seen, a receiving groove 101 and a protruding structure 102 are provided in the first filter part 1. The receiving groove 101 forms a space for accommodating particulate matter, and the protruding structure 102 can prevent a large amount of particulate matter in the washing water from clogging the filter structure. The protruding structure 102 effectively diverts the particulate matter entering from the water inlet end of the first filter part 1 to the side wall of the first filter part 1, and at the same time raises the water level of the filter structure to prevent the particulate matter from burying the filter structure. In addition, a protruding claw 301 and a guide structure 6 are also provided on the third filter part 3, and the third filter part 3 provided at the bottom of the second filter part 2 can rotate, so that when too much particulate matter clogs the filter structure, the third filter part 3 can stir the particulate matter by rotation to avoid clogging, and the guide structure 6 prevents too much particulate matter from falling out of the first filter part 1, causing problems such as clogging in the gap where the equipment is connected. At the same time, the guide structure 6 also has the function of introducing impurities such as particulate matter to the drainage pump 5.

[0063] Figure 4 、 5 6 is a schematic diagram of the structure of the first filter part 1, the second filter part 2 and the third filter part 3 of the present invention, which is mainly used to separately display the first filter part 1, the second filter part 2 and the third filter part 3 of the present invention. Figure 6 The protruding claws 301 and the guiding structure 6 provided on the third filter portion 3 can be seen more clearly in the figure. Figure 6 In the illustrated solution, two protruding claws 301 are symmetrically arranged on the third filter portion 3 , and the guiding structure 6 is arranged in a trend of being inclined from the periphery of the third filter portion 3 toward the center.

[0064] In general, the present invention can effectively solve the problem of clogging the drain pump 5 when the dishwasher is washing tableware and vegetables containing a large amount of particulate matter by adding a bottom filter device to the bottom of the filter structure of the dishwasher, thereby improving the overall life of the dishwasher; at the same time, it can directly collect particulate matter that cannot be removed by the drain pump 5, facilitate cleaning, and improve the cleanliness of the inside of the dishwasher; a raised structure 102 is provided in the first filter part 1, which can avoid the situation where a large amount of particulate matter in the washing water clogs the filter structure. The raised structure 102 effectively diverts the particulate matter entering from the water inlet end of the first filter part 1 to the side wall of the first filter part 1, and at the same time raises the water level of the filter structure , to prevent particles from burying the filter structure; the third filter part 3 arranged at the bottom of the second filter part 2 can rotate, so that when too much particulate matter blocks the filter structure, the third filter part 3 can stir the particulate matter by rotation, thereby avoiding clogging; a guide structure 6 is provided on the periphery of the third filter part 3 to prevent excessive particulate matter from falling out of the first filter part 1, causing problems such as clogging in the gaps where the equipment is connected. At the same time, the guide structure 6 also has the function of introducing impurities such as particles into the drainage pump 5; the first, second and third filter parts are connected by a detachable structure, and the detachable structure is snap-fit ​​or magnetic, which is convenient for users to disassemble and clean, and improves the user experience.

[0065] Example 1

[0066] like Figures 1 to 6 As shown, the filter system of a dishwasher described in this embodiment includes a circulating water channel and a drainage water channel, and also includes at least three filter parts; wherein, at least one filter part is shared by the circulating water channel and the drainage water channel; at least another filter part cooperates with the filter part shared by the circulating water channel and the drainage water channel to constitute a filter system for the circulating water channel; at least another filter part cooperates with the filter part shared by the circulating water channel and the drainage water channel to constitute a filter system for the drainage water channel.

[0067] Example 2

[0068] like Figures 1 to 6As shown, this embodiment is a further limitation of the above-mentioned embodiment 1. The filter system of a dishwasher described in this embodiment comprises a first filter part 1, a second filter part 2 and a third filter part 3; the first filter part 1 is at least partially placed inside the second filter part 2; the third filter part 3 is arranged on the side near the bottom of the second filter part 2; the washing water in the dishwasher flows into the first filter part 1 from the outside of the filter system; after passing through the first filter part 1, the washing water enters the second filter part 2; further, a washing pump 4 is provided on the circulating waterway; after the washing water in the dishwasher passes through the first filter part 1 and the second filter part 2, it forms circulating spray water under the action of the washing pump 4; further, a drainage pump 5 is provided on the drainage waterway; after the washing water in the dishwasher passes through the first filter part 1 and the third filter part 3, it is discharged from the dishwasher under the action of the drainage pump 5.

[0069] from Figure 1 The axial structure of the filter system of the dishwasher of the present invention can be seen in the figure. The first filter part 1 is placed inside the second filter part 2. A plurality of strip-shaped rib-shaped filter structures are arranged at intervals on the side wall of the first filter part 1. After the washing water filled with particulate matter in the dishwasher passes through the first filter part 1, the particulate matter is retained in the first filter part 1. The washing water filtered by the filter structure enters the second filter part 2. Figure 1 It can be seen that the side wall of the second filter part 2 is provided with a filtering structure composed of vertical ribs. The filtering structure of the second filter part 2 is relatively sparsely distributed than the filtering structure of the first filter part 1. The particulate matter is mainly collected by the first filter part 1, and the washing water passing through the second filter part 2 can be directly circulated back to the dishwasher from the washing pump 4; in addition, a third filter part 3 is also provided at the bottom of the second filter part 2. Since the washing water filtered out of the first filter part 1 still contains a certain degree of particulate matter, during the drainage process, a large amount of particulate matter will directly enter the drainage pump 5 after coarse filtration, making it impossible for the drainage pump 5 to completely eliminate the particulate matter, resulting in the accumulation of particulate matter and clogging the drainage pump 5. Therefore, the present invention provides a third filter part 3 to address this phenomenon.

[0070] Example 3

[0071] like Figures 1 to 6As shown, the embodiment is a further limitation of the above-mentioned embodiment one or embodiment two, and the filter system of the dishwasher of the embodiment has the first filter part 1, at least a part of which extends into the second filter part 2 and forms a holding groove 101 for holding impurities in the washing water; the holding groove 101 is provided with the protruding structure 102 arranged towards the water inlet end of the first filter part 1; at least the protruding structure 102 is provided with a structure for filtering the washing water; further, the second filter part 2 is at least sleeved outside the holding groove 101 of the first filter part 1; at least the side wall of the second filter part 2 is provided with a structure for filtering the washing water; the third filter part 3 at least covers the bottom of the second filter part 2 and forms a filtering structure for filtering the washing water flowing out of the dishwasher; the outer edge of the third filter part 3 is provided with a guide structure 6 extending towards the first filter part 1, and the guide structure 6 forms a tendency of guiding the filtering structure from the periphery of the third filter part 3 to the center.

[0072] Figure 2 And Figure 3 are the first and second schematic views of the main view of the filter system structure of the application, wherein Figure 3 most of the filtering structures in the first filter part 1 are omitted to facilitate observation of the overall structure of the filter system, and from Figure 2 and Figure 3 it can be seen that the holding groove 101 and the protruding structure 102 are arranged in the first filter part 1, the holding groove 101 forms a space for holding particles, and the protruding structure 102 can avoid the situation that a large amount of particles in the washing water block the filtering structure, the protruding structure 102 effectively divides the particles entering from the water inlet end of the first filter part 1 to the side wall of the first filter part 1, at the same time, the water level of the filtering structure is raised to avoid the particles burying the filtering structure; in addition, the guide structure 6 is also arranged on the third filter part 3, the guide structure 6 prevents too many particles from falling out of the first filter part 1 and causing problems such as blockage in the gap of the equipment connection, at the same time, the guide structure 6 also has the effect of guiding the particles and impurities to the drain pump 5.

[0073] Embodiment four

[0074] As shown in Figures 1 to 6 the embodiment is a further limitation of any one of the above-mentioned embodiments one to three, and the filter system of the dishwasher of the embodiment has the third filter part 3 capable of rotating at the bottom of the second filter part 2; the third filter part 3 is provided with at least one pawl 301 towards the first filter part 1.

[0075] Specifically, this setting is achieved by providing a rotatable unit at the contact point between the second filter part 2 and the third filter part 3. Furthermore, a structure that provides power for the rotation of the third filter part 3 can be provided on the guide structure 6 or the water-facing surface of the third filter part 3, that is, on the plane facing the first filter part 1. This structure can be similar to a fin and have a certain inclination angle. During the drainage operation, the washing water drives such a structure to cause the third filter part 3 to rotate. The protruding claws 301 on the third filter part 3 constantly stir the particulate matter on the third filter part 3 to prevent the particulate matter from clogging the filter structure on the third filter part 3, thereby causing blockage of the drainage channel.

[0076] Figure 2 and Figure 3 The first and second schematic diagrams of the main cross-sectional view of the filtration system structure of the present invention are shown in FIG. Figure 3 Most of the filtering structures in the first filter part 1 are omitted to facilitate observation of the overall structure of the filtering system. Figure 2 and Figure 3 As can be seen in the figure, a receiving groove 101 and a protruding structure 102 are provided in the first filter part 1. The receiving groove 101 forms a space for accommodating particulate matter, and the protruding structure 102 can prevent a large amount of particulate matter in the wash water from clogging the filter structure. The protruding structure 102 effectively diverts the particulate matter entering from the water inlet end of the first filter part 1 to the side wall of the first filter part 1, while raising the water level of the filter structure to prevent the particulate matter from burying the filter structure. In addition, a protruding claw 301 and a guide structure 6 are also provided on the third filter part 3. The bottom of the second filter part 2 is configured as a rotatable structure. After the third filter part 3 is connected to the bottom of the second filter part 2, it can be rotated at the bottom of the second filter part 2. When too much particulate matter clogs the filter structure, the third filter part 3 can stir the particulate matter by rotating to avoid clogging. The guide structure 6 prevents too much particulate matter from falling out of the first filter part 1 and causing problems such as clogging in the gap where the equipment is connected. At the same time, the guide structure 6 also has the function of guiding particulate matter and other impurities to the drain pump 5.

[0077] Example 5

[0078] This embodiment is a further limitation of the above-mentioned embodiment 4. In this embodiment, the side of the second filter part 2 is set to be fixed, and the bottom is provided with a rotating structure to realize the rotation of the bottom of the second filter part 2. The rotating structure can be realized by a rotating bearing or a sliding bearing. The third filter part 3 is connected to the bottom of the second filter part 2, so that the rotation of the third filter part 3 can be realized under the action of washing water during drainage operation. Further, when too much particulate matter blocks the filter structure, the third filter part 3 can stir the particulate matter by rotation to avoid clogging; and a guide structure 6 is provided on the periphery of the third filter part 3 to prevent too much particulate matter from falling out of the first filter part 1, causing problems such as clogging in the gap of the equipment connection. At the same time, the guide structure 6 also has the function of introducing impurities such as particulate matter into the drainage pump 5.

[0079] Example 6

[0080] like Figures 1 to 6 As shown, this embodiment is a further limitation of any one of the above-mentioned embodiments 1 to 5. In this embodiment, a filter system for a dishwasher is described, wherein the first filter part 1 and the second filter part 2, as well as the second filter part 2 and the third filter part 3, are all detachably connected; the first filter part 1 and the second filter part 2, as well as the second filter part 2 and the third filter part 3, are connected by magnetic attraction or snap-on connection.

[0081] Example 7

[0082] A dishwasher includes the filter system of any one of the above-mentioned embodiments 1 to 6.

[0083] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0084] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Accordingly, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of the invention.

[0085] All features disclosed in this specification (including accompanying claims, abstracts and drawings) and all processes or units of any method or apparatus disclosed herein may be combined in any combination, except where at least some of such features and / or processes or units are mutually exclusive. Unless expressly stated otherwise, each feature disclosed in this specification (including accompanying claims, abstracts and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0086] Furthermore, those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of the present invention and to form different embodiments. For example, in the claims below, any of the claimed embodiments may be used in any combination.

[0087] It should be noted that the above embodiments illustrate rather than limit the invention, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between brackets should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names.

[0088] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A filtration system for a dishwasher, comprising a circulating water path and a drainage water path, Its characteristics are: The filtration system comprises a first filtration part (1), a second filtration part (2) and a third filtration part (3); in, The first filter part (1) is shared by the circulating water channel and the drainage water channel; The second filter part (2) cooperates with the first filter part (1) to form a filtering system for the circulating water circuit; The third filter part (3) cooperates with the first filter part (1) to form a filtration system for the drainage waterway; The first filter part (1) is at least partially placed inside the second filter part (2), and the washing water in the dishwasher flows into the first filter part (1) from the outside of the filter system; after passing through the first filter part (1), the washing water enters the second filter part (2); The third filter portion (3) at least covers the bottom of the second filter portion (2), forming a filter structure for filtering the washing water flowing out of the dishwasher; The side of the second filter part (2) is arranged to be fixed, and the bottom is provided with a rotating structure so that the bottom of the second filter part (2) can rotate; the rotating structure is realized by a rotating bearing or a sliding bearing; The third filter part (3) is connected to the bottom of the second filter part (2) and can rotate on the bottom of the second filter part (2); A guide structure (6) is provided on the periphery of the third filter portion (3), and the guide structure (6) surrounds the outer periphery of the filter structure of the third filter portion (3) and has a tendency to extend obliquely downward from the periphery of the third filter portion (3) toward the center of the filter structure to guide; At least one protruding claw (301) is provided on the side of the third filter portion (3) facing the location of the first filter portion (1).

2. The filter system for a dishwasher according to claim 1, characterized in that: Also includes A washing pump (4) is arranged at the rear of the circulating water filtering system.

3. The filter system for a dishwasher according to claim 2, characterized in that: The washing water in the dishwasher passes through the first filter part (1) and the second filter part (2), and then forms circulating spray water under the action of the washing pump (4).

4. The filter system for a dishwasher according to claim 1, characterized in that: Also includes A drainage pump (5) is arranged at the rear of the drainage waterway filtering system.

5. The filter system for a dishwasher according to claim 4, characterized in that: The washing water in the dishwasher passes through the first filter part (1) and the third filter part (3), and is then discharged from the dishwasher under the action of a drainage pump (5).

6. A filter system for a dishwasher according to any one of claims 1 to 5, characterized in that: At least a portion of the first filter portion (1) extends into the second filter portion (2) to form a receiving tank (101) for receiving impurities in the washing water; A protruding structure (102) is provided in the receiving groove (101) and is arranged in the direction of the water inlet end of the first filter part (1).

7. The filter system for a dishwasher according to claim 6, characterized in that: At least the protruding structure (102) is provided with a structure for filtering washing water.

8. The filter system for a dishwasher according to claim 6, characterized in that: The second filter portion (2) is at least sleeved on the outside of the receiving groove (101) of the first filter portion (1); At least the side wall of the second filter portion (2) is provided with a structure for filtering washing water.

9. A filter system for a dishwasher according to any one of claims 1 to 5, characterized in that: The first filter part (1) and the second filter part (2), as well as the second filter part (2) and the third filter part (3), are all detachably connected.

10. The filter system for a dishwasher according to claim 9, characterized in that: The first filter part (1) and the second filter part (2), as well as the second filter part (2) and the third filter part (3), are connected by magnetic attraction or snap connection.

11. A dishwasher, characterized in that: A filter system for a dishwasher comprising any one of claims 1 to 10.

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