Filtering device and electrical equipment

Abstract

The invention belongs to the technical field of electrical equipment, particularly relates to a filtering device and electrical equipment, and aims to solve the problems that a filter is easy to block and manual cleaning wastes time and labor to a certain extent. The filtering device comprises a filtering shell, a filtering piece and a cleaning piece, wherein the filtering shell is provided with a filtering cavity, and a water inlet and a water outlet which are communicated with the filtering cavity; the filtering piece is arranged in the filtering cavity so as to filter a fluid medium flowing through the filtering piece; the cleaning piece is arranged inside or / and outside the filtering piece, and the filtering piece and the cleaning piece rotate relatively. According to the filtering device, relative rotation of the filtering part and the cleaning part is controlled, in the rotation process, the cleaning part cleans the inner surface of the filtering part, so that residual foreign matter on the filtering part is separated from the filtering part, the technical problem that the filtering part is blocked is relieved to a certain degree, an automatic cleaning scheme is adopted, and the cleaning efficiency is improved. The technical problem that manual cleaning wastes time and labor can be avoided, and good practicability is achieved.

Description

Technical Field

[0001] This application belongs to the field of electrical equipment technology, specifically relating to a filtration device and electrical equipment. Background Technology

[0002] The dishwasher's filtration system is a crucial component of the overall water flow system, primarily responsible for filtering the circulating washing water and collecting and removing different types of food residue. During operation, the filter is easily clogged by food residue, grease, and other debris, requiring manual cleaning which is time-consuming and labor-intensive. Summary of the Invention

[0003] This application provides a filtration device and electrical equipment, which aims to at least partially solve the problem of filters being easily clogged and the time-consuming and laborious process of manual cleaning.

[0004] In a first aspect of this application, a filtration device is provided, the filtration device comprising: a filter housing having a filter chamber and an inlet and an outlet communicating with the filter chamber; a filter element disposed within the filter chamber to filter fluid media flowing through the filter element; and a cleaning element disposed within and / or outside the filter element, the filter element and the cleaning element rotating relative to each other.

[0005] The filtration device provided in this application controls the relative rotation of the filter element and the cleaning element. During the rotation, the cleaning element cleans the inner surface of the filter element, causing the residue and foreign matter on the filter element to separate from the filter element. This alleviates the technical problem of filter element clogging to a certain extent. Moreover, it is an automatic cleaning solution that avoids the technical problem of time-consuming and laborious manual cleaning, and has good practicality.

[0006] In some embodiments, the cleaning element is fixed relative to the filter housing, and the filter element is rotatably disposed relative to the filter housing.

[0007] In some embodiments, the filtering device further includes: a first drive member having a rotatable output end, the filtering member being connected to the output end of the first drive member.

[0008] In some implementations, the first drive element is located outside the filter housing, and the output end of the first drive element is connected to a drive shaft, which extends into the filter cavity and is connected to the connection end of the filter element.

[0009] In some implementations, the filter element has a connection port at its connection end, and the filter device includes a mounting component that is fitted into the connection port and connected to the drive shaft.

[0010] In some embodiments, the filter element has a connecting portion at its connecting end, a connecting port is disposed within the connecting portion, the head of the mounting element is placed within the connecting port, a support portion is disposed on the periphery of the mounting element, and at least a portion of the plane of the connecting portion is attached to the support portion.

[0011] In some embodiments, the connecting portion and the peripheral side of the head of the mounting member are snap-fitted together.

[0012] In some embodiments, the rear end of the mounting component is provided with a connecting groove, and the drive shaft is connected to the connecting groove.

[0013] In some implementations, the cross-section of the portion of the drive shaft that connects to the connecting groove is non-circular.

[0014] In some implementations, the filter chamber is provided with a limiting groove; the filter element is also provided with a positioning end, which is disposed opposite to the connecting end, and the positioning end is rotatably disposed within the limiting groove.

[0015] In some embodiments, the filter element is fixed relative to the filter housing, and the cleaning element is rotatably disposed relative to the filter housing.

[0016] In some implementations, the two ends of the filter element are respectively snapped into the filter cavity.

[0017] In some embodiments, the filtration device further includes a second drive member having a rotatable output end, wherein the cleaning member is connected to the output end of the second drive member.

[0018] In some embodiments, the cleaning element includes: a cleaning frame disposed inside and / or outside the filter element; and a cleaning brush attached to the periphery of the cleaning frame facing the filter element.

[0019] In some embodiments, the filter housing has an inlet on its periphery and an outlet at its end, both of which are connected to the filter cavity.

[0020] In some implementations, the axis of the inlet and the axis of the filter element do not intersect.

[0021] In some implementations, the water inlet is oriented tangentially to the circumferential surface of the filter housing.

[0022] In some implementations, the housing is connected by two monolithic structures.

[0023] In a second aspect of this application, an electrical device is provided, which includes the aforementioned filtering device.

[0024] Electrical equipment equipped with the above-mentioned filtration device can alleviate the technical problem of filter clogging to a certain extent, and it is an automatic cleaning solution that avoids the time-consuming and labor-intensive technical problem of manual cleaning, making it highly practical.

[0025] In some implementations, the electrical appliance is a dishwasher. Attached Figure Description

[0026] Figure 1 A schematic diagram of the first filtration device is shown;

[0027] Figure 2 It shows Figure 1 An explosion diagram;

[0028] Figure 3 It shows Figure 1 A frontal view diagram;

[0029] Figure 4 It shows Figure 3 A schematic diagram of the AA cross-section;

[0030] Figure 5 It shows Figure 1 A schematic diagram of the structure of the first cleaning component;

[0031] Figure 6 A schematic diagram of the internal structure of the first housing is shown;

[0032] Figure 7 A schematic diagram of the internal structure of the second housing is shown;

[0033] Figure 8 It shows Figure 1 A schematic diagram of the structure of the first filter element in the process;

[0034] Figure 9 It shows Figure 1 A schematic diagram of the structure of the mounting components;

[0035] Figure 10 It shows Figure 9 Another structural diagram from a different perspective;

[0036] Figure 11 It shows Figure 1 A schematic diagram of the structure of the first drive shaft in the process;

[0037] Figure 12 It shows Figure 6 A cross-sectional schematic diagram;

[0038] Figure 13 An exploded schematic diagram of the second filtration device is shown;

[0039] Figure 14 It shows Figure 13 A schematic diagram of the main shell structure;

[0040] Figure 15 It shows Figure 13 A schematic diagram of the structure of the second filter element in the process;

[0041] Figure 16 It shows Figure 13 A schematic diagram of the cap structure;

[0042] Figure 17 It shows Figure 13 A schematic diagram of the structure of the second cleaning component;

[0043] Figure 18 A schematic diagram of the water cup assembly is shown.

[0044] Figure 19 It shows Figure 18 A side view diagram;

[0045] Figure 20 It shows Figure 18 An explosion diagram;

[0046] Figure 21 It shows Figure 18 BB cross-sectional diagram;

[0047] Figure 22 It shows Figure 18 A schematic diagram of the cup's structure;

[0048] Figure 23 It shows Figure 22 A structural diagram from another perspective.

[0049] Explanation of reference numerals in the attached figures:

[0050] First filtration device (main filtration device) - 100, Filter housing - 101, First housing - 1011, Second housing - 1012, First seal - 1013, First filter element - 102, Positioning end - 1021, Connecting end - 1022, Connecting port - 1023, Connecting part - 1024, Second notch - 1025, First cleaning element - 103, First cleaning frame - 1031, First ring structure - 10311, Connecting post - 10312, First cleaning brush - 1032, First protrusion - 1033, First filter chamber - 104, First notch - 1041, Limiting groove -1042, First limiting ring -1043, Inlet -105, First inlet -1051, Second inlet -1052, Third inlet -1053, Outlet -106, First driving component -107, First driving shaft -108, First limiting surface -1081, Second limiting surface -1082, Sealing groove -1083, Mounting component -109, Support part -1091, Second protrusion -1092, Connecting groove -1093, First limiting ring -110, First mounting groove -111, Second limiting ring -112, Second mounting groove -113, Second sealing component 114;

[0051] Second filtration device (auxiliary filtration device) -200, second filter housing -201, main housing -2011, cover -2012, third seal -2013, positioning recess -2014, third protrusion -2015, third protrusion -2016, limiting hole -2017, second cleaning component -202, second cleaning frame -2021, second cleaning brush -2022, connecting recess -2023, second filter component -203, second ring structure -2031, third notch -2032, third ring structure -2033, third notch -2034, second drive component -204, second drive shaft -205;

[0052] Inner liner -300;

[0053] Cup body - 400, water-containing cavity - 401, main cavity - 4011, water distribution cavity - 4012, first water outlet - 402, second water outlet - 403, third water outlet - 404, water inlet - 405, fourth water outlet - 406, drain cavity - 407, drain channel - 408;

[0054] Washing pump-500;

[0055] Drain pump-600;

[0056] Spray arm assembly-700. Detailed Implementation

[0057] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0058] The first aspect of this application provides a filtering device that can automatically clean the filter, thereby solving to some extent the problem that the filter is easily clogged and manual cleaning is time-consuming and laborious.

[0059] The filtration device provided in this application includes a filter housing, a filter element, and a cleaning element. The filter housing has a filter chamber and an inlet and an outlet communicating with the filter chamber. The filter chamber can be cylindrical, spherical, prismatic, planar, or curved, and can house the filter element. The inlet communicates with the filter chamber, allowing fluid media to enter through it. The outlet communicates with the filter chamber, allowing fluid media to exit through it. The filter element is placed inside the filter chamber to filter the fluid media flowing through it. The shape of the filter element is adapted to the filter chamber, and its gaps are arranged within the chamber. A mesh-like filter hole can be provided around the filter element. This filter hole is easily clogged by food residue, oil, and other foreign matter, requiring manual cleaning, which is time-consuming and labor-intensive.

[0060] In one embodiment, the inlet may face the periphery of the filter element, and the outlet may face the axial end of the filter element, so that the fluid medium flows from the outer periphery of the filter element into the interior and then exits from the axial end of the filter element. In another embodiment, the inlet may face the axial end of the filter element, and the outlet may face the periphery of the filter element, so that the fluid medium enters from the axial end of the filter element and then moves through the filter holes to the outside of the filter element; or, both the inlet and outlet may face the periphery of the filter element, and the inlet and outlet may be located on both sides of the filter element or arranged at an angle on the outer side of the filter element, so that the fluid medium flows from the periphery of one side of the filter element through the filter element to the other side of the filter element.

[0061] In one embodiment, the cleaning element is placed inside the filter element, and the filter element and the cleaning element rotate relative to each other. During rotation, the cleaning element cleans the inner surface of the filter element, causing residues and foreign matter on the filter element to separate from it, thus alleviating the problem of filter element clogging to some extent. In another embodiment, the cleaning element is placed outside the filter element, and the filter element and the cleaning element rotate relative to each other. During rotation, the cleaning element cleans the outer surface of the filter element, causing residues and foreign matter on the filter element to separate from it, thus alleviating the problem of filter element clogging to some extent. Alternatively, cleaning elements are provided both inside and outside the filter element, and the filter element and the cleaning element rotate relative to each other. During rotation, the cleaning elements clean both the inner and outer surfaces of the filter element, causing residues and foreign matter on the filter element to separate from it, thus alleviating the problem of filter element clogging to some extent.

[0062] In one embodiment, the filter element is fixed relative to the filter housing, while the cleaning element rotates relative to the filter housing. The rotating cleaning element cleans the stationary filter element, thus alleviating filter clogging to some extent. In another embodiment, the cleaning element is fixed relative to the filter housing, while the filter element rotates relative to the filter housing. The stationary cleaning element cleans the rotating filter element, also mitigating filter clogging to some extent.

[0063] Appendix Figure 1 -Appendix Figure 12 A filtration device according to one embodiment is shown. This filtration device can be defined as a first filtration device 100. In this first filtration device 100, the filter housing is defined as a first filter housing 101, the cleaning element is defined as a first cleaning element 103, the filter element is defined as a first filter element 102, and the filter chamber is defined as a first filter chamber 104. The first cleaning element 103 is placed outside the first filter element 102, and the first cleaning element 103 is fixed relative to the first filter housing 101, while the first filter element 102 rotates relative to the first filter housing 101. For other forms of filtration devices where the filter element rotates relative to the cleaning element, the design can be adjusted accordingly based on this first filtration device 100, and will not be described in detail here.

[0064] Figure 1 A schematic diagram of the first filtration device is shown. Figure 2 It shows Figure 1 A schematic diagram of the explosion. Combined with... Figure 1 as well as Figure 2 The first filter housing 101 may have one or more inlets 105 on its periphery, and an outlet 106 is provided at the end of the first filter housing 101. Both the inlets 105 and the outlets 106 are connected to the first filter chamber 104. The fluid medium flows in from the inlet 105, is filtered by the first filter element 102, and is discharged from the outlet 106. For example: combined with Figure 1 as well as Figure 2The first filter housing 101 may have two or more water inlets 105 on its periphery to provide more media to the first filter chamber 104, thereby increasing the filtration capacity of the first filter device 100. In other embodiments, the first filter housing 101 may also have more water inlets 105 on its periphery, which is not limited here.

[0065] Figure 3 It shows Figure 1 A frontal view diagram, Figure 4 It shows Figure 3 A schematic diagram of the AA cross-section. Combined with... Figures 1-4 In one embodiment, the axis of the inlet 105 does not intersect with the axis of the first filter element 102. This ensures that the fluid medium entering the first filter element 102 through the inlet 105 of the first filter housing 101 does not pass through the central axis of the first filter element 102, but flows along the wall of the first filter element 102, thereby flushing the periphery of the first filter element 102. This increases the path and time of the fluid medium's flow on the first filter element 102, improving the filtration effect. It also helps to clean foreign matter on the first filter element 102 to some extent, alleviating the problem of clogged filter pores. Combined with... Figure 1 The water inlet 105 is preferably tangentially positioned along the periphery of the first filter housing 101. This allows the fluid medium entering the first filter element 102 through the inlet 105 to flow spirally along the wall of the first filter element 102, flushing its periphery. This increases the path and time of flow, improving filtration efficiency and cleaning foreign matter, thus alleviating clogging of the filter pores. In another embodiment, the axis of the inlet 105 intersects the axis of the first filter element 102, meaning the water inlet 105 is perpendicular to the axial direction of the first filter element 102, achieving the same filtration effect.

[0066] Combination Figures 1-4Since both the first filter element 102 and the first cleaning element 103 are located within the first filter cavity 104 of the first filter housing 101, to facilitate the assembly of the first filter element 102 and the first cleaning element 103 within the first filter cavity 104, the first filter housing 101 can be connected by two single-unit structures. These two single-unit structures can be a first housing 1011 and a second housing 1012, which can be connected by screws and / or snap-fit ​​connections to form the first filter cavity 104. To improve the sealing performance between the first housing 1011 and the second housing 1012, a first sealing element 1013 is also provided between them. This first sealing element 1013 can be an X-shaped or O-shaped sealing ring.

[0067] Figure 5 It shows Figure 1 A schematic diagram of the structure of the first cleaning component. (Combined with...) Figure 5 The first cleaning component 103 includes a first cleaning frame 1031 and a first cleaning brush 1032. The first cleaning frame 1031 is positioned outside the first filter element 102, and the first cleaning brush 1032 is connected to the circumferential side of the first cleaning frame 1031 facing the first filter element 102. That is, the first cleaning brush 1032 is located between the first cleaning frame 1031 and the first filter element 102. The first cleaning frame 1031 is connected to the first filter chamber 104. Since the first cleaning frame 1031 is positioned outside the first filter element 102, the first cleaning frame 1031 is a circumferentially extended structure to enclose the first filter element 102. In specific implementation, the first cleaning brush 1032 is snapped or / and bonded to the first cleaning frame 1031. Multiple first cleaning brushes 1032 can be provided, such as two, three or four, etc. The multiple first cleaning brushes 1032 are distributed at intervals. Under the condition that the first filter element 102 rotates for one cycle, the same part of the first filter element 102 can be cleaned by multiple first cleaning brushes 1032, thereby improving the cleaning effect on the first filter element 102.

[0068] Combination Figure 5 In specific implementation, the first cleaning frame 1031 can be a frame structure that is adapted to the shape of the first filter element 102. It includes a plurality of first ring structures 10311 spaced apart along its axial direction. The plurality of ring structures are connected by connecting posts 10312. The inner side of each connecting post 10312 can be provided with the aforementioned first cleaning brush 1032.

[0069] Figure 6 A schematic diagram of the internal structure of the first housing is shown. Figure 7 A schematic diagram of the internal structure of the second housing is shown. (Combined with...) Figures 4-7 The first cleaning frame 1031 is snapped into the first filter chamber 104. In a specific implementation, as follows... Figure 5As shown, the end of the first cleaning frame 1031 is provided with a plurality of first protrusions 1033 spaced apart, such as Figure 6 as well as Figure 7 As shown, a first notch 1041 matching the first protrusion 1033 is provided on the inner side of the end of the first filter chamber 104 (the first housing 1011 and the second housing 1012), as shown. Figure 4 As shown, the first protrusion 1033 is inserted into the corresponding first notch 1041 to fix the first cleaning frame 1031 into the first filter chamber 104. In another embodiment, the end of the first cleaning frame 1031 is provided with a plurality of first notches 1041 spaced apart, and the inner side of the end of the first filter chamber 104 is provided with a first protrusion 1033 matching the notches. The first protrusion 1033 is inserted into the corresponding first notch 1041, which can also fix the first cleaning frame 1031 into the first filter chamber 104.

[0070] Figure 8 It shows Figure 1 A schematic diagram of the structure of the first filter element. (Combined with...) Figure 8 The first filter element 102 has a positioning end 1021 and a connecting end 1022 disposed opposite to each other. The positioning end 1021 of the first filter element 102 is rotatably connected to one end inside the first filter cavity 104, and the connecting end 1022 of the first filter element 102 is used to connect with the first driving member 107 so that the first filter element 102 is driven by the first driving member 107 to rotate within the first filter cavity 104. The specific assembly method of the first filter element 102 within the first filter cavity 104 will now be further described with reference to the figures.

[0071] Combination Figure 6 A limiting groove 1042 is provided at one end of the first filter chamber 104. The positioning end 1021 of the first filter element 102 is rotatably disposed in the limiting groove 1042. The limiting groove 1042 is an annular groove coaxial with the first filter element 102. The positioning end 1021 of the first filter element 102 is partially disposed in the limiting groove 1042 so that the first filter element 102 can rotate relative to the filter housing 101 under the drive of the first driving member 107. In a specific implementation, a first limiting ring 110 is provided at the end of the first filter chamber 104. The first limiting ring 110 and the side wall of the filter chamber form the aforementioned limiting groove 1042.

[0072] In one embodiment, the first driving member 107 may be a drive motor. The first driving member 107 has a rotatable output end. The output end of the first driving member 107 is connected to the first filter 102 to drive the first filter 102 to rotate relative to the first cleaning member 103.

[0073] Combination Figures 1-4In one embodiment, the first driving member 107 is located outside the filter housing 101, thus not occupying the installation space of the first filter element 102 or the flow space of the fluid medium. This also prevents the fluid medium from affecting the operation of the drive motor. Specifically, the output end of the first driving member 107 is connected to a first drive shaft 108, which extends into the first filter chamber 104 and connects to the connection end 1022 of the first filter element 102. This allows the first filter element 102 to rotate relative to the first cleaning element 103 under the drive of the first driving member 107. In another embodiment, the first driving member 107 can also be located inside the first filter housing 101, but a sealed space is required to house the first driving member 107. The specific details of the connection and assembly between the first driving member 107 and the first filter element 102 are now further described with reference to the accompanying drawings.

[0074] Combination Figure 2 , Figure 4 as well as Figure 8 The first filter element 102 has a connection port 1023 at its connecting end 1022. The first filter device 100 also includes a mounting member 109, which is fitted into the connection port 1023 and connected to the first drive shaft 108. When the first drive member 107 is activated, it sequentially drives the first drive shaft 108 and the mounting member 109 to rotate, thereby driving the first filter element 102 to rotate. The mounting member 109 provides a mounting base for the first filter element 102, and it can also be assembled with the first drive shaft 108 to achieve connection and assembly between the first drive shaft 108 and the first filter element 102.

[0075] Combination Figure 8 In specific implementation, the connecting end 1022 of the first filter element 102 is provided with a connecting part 1024, and the installation port is provided in the connecting part 1024. Figure 9 It shows Figure 1 The structural diagram of the mounting components in the diagram, combined with Figure 9 The mounting member 109 has a head and a tail along the axial direction of the first drive member 107. The head of the mounting member 109 is connected to the connection port 1023 of the connection part 1024. The first drive shaft 108 of the first drive member 107 is connected to the tail of the mounting member 109 so that the first drive member 107 is connected and assembled with the first filter member 102 through the transition of the mounting member 109.

[0076] Combination Figure 9The mounting member 109 has a support portion 1091 on its periphery at the head, and at least a portion of the plane of the connecting portion 1024 is in contact with the support portion 1091. The connecting portion 1024 can be a connecting ring located inside the first filter element 102. The inner ring of the connecting ring forms a connection port 1023. The support portion 1091 at the head of the mounting member 109 is a supporting ring surface, and the end face of the connecting ring is in contact with the supporting ring surface, thus allowing the mounting member 109 to support the first filter element 102. In another embodiment, the periphery of the mounting member 109 can be provided with multiple annular steps, such as a three-level or four-level annular step. One of the step surfaces of the multiple annular steps forms a supporting ring surface that is in contact with the connecting ring, and one of the remaining step surfaces of the multiple annular steps abuts against the connecting end 1022 of the first filter element 102.

[0077] Combination Figure 9 In one embodiment, the head of the mounting member 109 may be conical to form a guide structure on its periphery, so as to facilitate the assembly of the mounting member 109 with the first filter element 102. In another embodiment, the head of the mounting member 109 may also be cylindrical.

[0078] Combination Figure 8 as well as Figure 9 The connecting portion 1024 and the head of the mounting member 109 are engaged peripherally. In one embodiment, the connecting portion 1024 may have a plurality of second notches 1025 spaced around its central axis, and the head of the mounting member 109 may have a plurality of second protrusions 1092. The second protrusions 1092 and the second notches 1025 are correspondingly arranged, and the second protrusions 1092 are inserted into the corresponding second notches 1025 to achieve the engagement of the head of the connecting portion 1024 and the mounting member 109. In another embodiment, the second notches 1025 may also be provided on the head of the mounting member 109, and the second protrusions 1092 may be provided on the connecting portion 1024, which can also achieve the assembly of the mounting member 109 with the connecting portion 1024.

[0079] Figure 10 It shows Figure 9 Another structural diagram from the perspective of Figure 11 It shows Figure 1 A schematic diagram of the structure of the first drive shaft in the process. (Combined with...) Figure 10 as well as Figure 11 The mounting component 109 has a connecting groove 1093 at its tail end, and the first drive shaft 108 is connected to the connecting groove 1093. The cross-section of the portion of the first drive shaft 108 that connects to the connecting groove 1093 is a non-circular structure. For example, the cross-section of the portion of the first drive shaft 108 that extends into the connecting groove 1093 is cross-shaped, triangular prism, quadrangular prism, or flower-shaped. The shape of the connecting groove 1093 matches the non-circular structure of the first drive shaft 108 so that the first drive shaft 108 can rotate synchronously with the mounting component 109.

[0080] Combination Figure 11 The first drive shaft 108 has a stepped structure. The top of the stepped structure is a first limiting surface 1081. The first limiting part 1081 abuts against the top of the connecting groove 1093 of the mounting part 109. The periphery of the stepped structure is a second limiting surface 1082. The second limiting surface 1082 is provided with a sealing groove 1083. A second sealing element 114 is provided in the sealing groove 1083 and is provided between the filter housing 101 and the second limiting surface 1082. Figure 2 as well as Figure 4 As shown, the second seal 114 can be an X-shaped seal or an O-shaped seal to improve the sealing performance of the first drive shaft 108 connected in the connecting groove 1093.

[0081] Combination Figure 6 The first filter device 100 provided in this application has an outlet 106 located at the axial end of the first filter housing 101 and an inlet 105 located on the periphery of the first filter housing 101. Figure 12 It shows Figure 6 A cross-sectional schematic diagram, combined with Figure 4 as well as Figure 12 The first housing 1011 is provided with two first limiting rings 110. The two first limiting rings 110 have different radial dimensions. The two first limiting rings 110 and the inner wall of the first housing 1011 form a limiting groove 1042 for accommodating the positioning end 1021 of the first filter element 102. The limiting ring located on the outer side forms a first mounting groove 111 for accommodating the end of the first cleaning frame 1031 with the inner wall of the first housing 1011, so as to perform rough positioning of the first cleaning frame 1031 during assembly. The bottom of the first mounting groove 111 is provided with a structure for engaging with the first cleaning frame 1031. After rough positioning, it is engaged with the first cleaning frame 1031.

[0082] Combination Figure 4 The second housing 1012 is provided with a second limiting ring 112. The bottom outer peripheral surface of the mounting member 109 abuts against the inner ring surface of the second limiting ring 112. The outer ring surface of the second limiting ring 112 and the side wall of the second housing 1012 form a second mounting groove 113 to accommodate the other end of the first cleaning frame 1031, so as to perform rough positioning of the first cleaning frame 1031 during the assembly process. The bottom of the second mounting groove 113 is provided with a structure that engages with the first cleaning frame 1031. After rough positioning, the first cleaning frame 1031 is rotated to engage. Finally, the first housing 1011 and the second housing 1012 are connected together.

[0083] Appendix Figure 13 -Appendix Figure 17Another embodiment of the filtration device is shown, defined as a second filtration device 200. In this second filtration device 200, the filter housing is defined as a second filter housing 201, the cleaning element is defined as a second cleaning element 202, the filter element is defined as a second filter element 203, and the filter chamber is defined as a second filter chamber. The second cleaning element 202 is placed inside the second filter element 203, and the second filter element 203 is fixed relative to the second filter housing 201, while the second cleaning element 202 rotates relative to the second filter housing 201. For other forms of filtration devices where the cleaning element rotates relative to the filter element, corresponding adjustments can be made to the design based on this second filtration device 200, and will not be elaborated here. The following is an illustration... Figure 13 - Appendix Figure 17 Further details of the second filtration device 200 are described below.

[0084] Figure 13 An exploded schematic diagram of the second filtration device is shown. (Combined with...) Figure 13 Similar to the first filter housing 101, to facilitate the assembly of the second cleaning component 202 and the second filter component 203 within the second filter housing 201, the second filter housing 201 is also connected by two single-unit structures. The two single-unit structures of the filter housing 101 are the main housing 2011 and the cover 2012. The main housing 2011 can be a columnar structure with an opening at one axial end. The cover 2012 can be detachably fitted onto the opening of the main housing 2011 by means of snap-fit ​​or screw connection. The cover 2012 and the main housing 2011 constitute the second filter chamber to facilitate the assembly of the filter component and the cleaning component within the filter housing 101. To improve the seal between the cover 2012 and the main housing 2011, a third sealing component 2013 is also provided between the cover 2012 and the main housing 2011. The third sealing component 2013 can be an O-ring or an X-ring, and there is no limitation on this.

[0085] Similar to the first filter device 100, the main housing 2011 of the second filter device 200 is also provided with an inlet and an outlet that communicate with the second filter chamber, so that the fluid medium can flow into the second filter chamber through the inlet, be filtered by the second filter element 203, and then be led out from the outlet.

[0086] Figure 14 It shows Figure 13 A schematic diagram of the main shell structure. (Combined with...) Figure 14A positioning recess 2014 is provided at the bottom of the main housing 2011. An inlet can be located on the periphery of the positioning recess 2014, and an outlet is located on the periphery of the main housing 2011, above the inlet. The media fluid is injected into the main housing 2011 through the inlet at the bottom and flows towards the outlet within the main housing 2011. During this flow, the media fluid is filtered by the second filter element 203 and then exits from the outlet. The outlet is preferably located at the top of the main housing 2011 to create a greater height difference between the outlet and the inlet, thereby extending the flow path of the media fluid within the second filter element 203 and improving the filtration effect.

[0087] Figure 15 It shows Figure 13 A schematic diagram of the structure of the second filter element. (Combined with...) Figure 14 as well as Figure 15 The bottom of the second filter element 203 is engaged with the top of the side wall of the positioning recess 2014. In one embodiment, a second ring structure 2031 is provided on the periphery of the bottom of the second filter element 203. A plurality of third notches 2032 are provided at intervals on the second ring structure 2031. A plurality of third protrusions 2015 are provided at intervals on the top of the side wall of the positioning recess 2014. The plurality of third protrusions 2015 are inserted into the corresponding third notches 2032 to connect the bottom of the second filter element 203 to the top of the side wall of the positioning recess 2014. In another embodiment, a plurality of third protrusions 2015 are spaced apart on the second annular structure 2031 on the periphery of the bottom of the second filter element 203, and a plurality of third notches 2032 are spaced apart on the top of the sidewall of the positioning recess 2014. The plurality of third protrusions 2015 are inserted into the corresponding third notches 2015, or the bottom of the second filter element 203 can be connected to the top of the sidewall of the positioning recess 2014.

[0088] Figure 16 It shows Figure 13 A schematic diagram of the cap structure. Combined with... Figure 15 as well as Figure 16The top of the second filter element 203 is snapped onto the top of the cover 2012. In one embodiment, a third annular structure 2033 is provided on the periphery of the top of the second filter element 203, and a plurality of fourth notches 2034 are spaced apart on the third annular structure 2033. A plurality of fourth protrusions 2016 are spaced apart on the bottom of the cover 2012, and the plurality of fourth protrusions 2016 are inserted into the corresponding fourth notches 2034 to snap the top of the second filter element 203 onto the bottom of the cover 2012. In another embodiment, a plurality of fourth protrusions 2016 are spaced apart on the third annular structure 2033 on the periphery of the top of the second filter element 203, and a plurality of fourth notches 2034 are spaced apart on the bottom of the cover 2012. The plurality of fourth protrusions 2016 are inserted into the corresponding fourth notches 2034, which can also connect the top of the second filter element 203 to the bottom of the cover 2012.

[0089] Figure 17 It shows Figure 13 A schematic diagram of the structure of the second cleaning component. (Combined with...) Figure 17 The second cleaning component 202 includes a second cleaning frame 2021 and a second cleaning brush 2022. The second cleaning frame 2021 is placed inside the second filter component 203. The second cleaning brush 2022 can be connected to the second cleaning frame 2021 on the periphery facing the second filter component 203 by snap-fit ​​or adhesive. Multiple second cleaning brushes 2022 can be provided, such as two, three, or four, and are spaced apart. When the second cleaning component 202 rotates once, the same part of the second filter component 203 can be cleaned by multiple second cleaning brushes 2022, improving the cleaning effect on the second filter component 203.

[0090] Combination Figure 17 In one embodiment, the second cleaning frame 2021 of the second cleaning member 202 may extend along the radial direction of the second filter member 203, and the central axis of the second cleaning frame 2021 and the second filter member 203 are coaxially arranged. According to another embodiment of this application, the second cleaning frame 2021 of the second cleaning member 202 may also be a columnar structure, which is coaxially arranged with the second filter member 203.

[0091] Combination Figure 13 The second filter device 200 also includes a second drive member 204, and a second cleaning member 202 is connected to the second drive member 204 to drive the second cleaning member 202 to rotate inside the second filter member 203 to clean foreign objects on the filter holes of the second filter member 203.

[0092] Combination Figure 13Similar to the first filter device 100, the second drive unit 204 of the second filter device 200 can also be a drive motor, which is located below the bottom of the main housing 2011. The output end of the second drive unit 204 can enter the main housing 2011 through the second drive shaft 205 and be connected to the second cleaning frame 2021.

[0093] Combination Figure 17 In specific implementation, the second cleaning frame 2021 is provided with a connecting recess 2023, and the second drive shaft 205 is connected to the connecting recess 2023. The cross-section of the part of the second drive shaft 205 that connects to the connecting recess 2023 is a non-circular structure. For example, the cross-section of the part of the second drive shaft that extends into the connecting recess 2023 is cross-shaped, triangular prism, quadrangular prism, or flower-shaped. The shape of the connecting recess 2023 matches the non-circular structure of the first drive shaft 108 so that the second cleaning frame 2021 rotates synchronously with the second drive shaft. For details, refer to the connection method of the drive shaft of the first filter device 100, which will not be elaborated here.

[0094] Combination Figure 16 The inner side of the cover 2012 is provided with a limiting hole 2017. The top of the second cleaning frame 2021 can be rotatably connected to the limiting hole 2017 through the connecting shaft 2024. During the process of the second driving member 204 driving the second cleaning member 202 to rotate, the connecting shaft also rotates accordingly in the limiting hole 2017 to improve the smoothness of the rotation of the second cleaning frame 2021.

[0095] The filtration device provided in this application, during the filtration of fluid media, cleans foreign objects on the filter elements by controlling the relative rotation of the cleaning element and / or the filter element, thereby alleviating the technical problem of filter element clogging to a certain extent and improving the smoothness of the fluid medium, and has good practicality.

[0096] A second aspect of this application provides an electrical device that includes the aforementioned filtration device.

[0097] Electrical equipment equipped with the aforementioned filtration devices can alleviate the technical problem of filter clogging to a certain extent, thereby improving the smoothness of the fluid flow and demonstrating excellent practicality.

[0098] In one embodiment, the electrical device can be a dishwasher. According to another embodiment of this application, the electrical device can also be other devices requiring the filtration of fluid media, such as a water dispenser, etc., and there is no limitation herein. Taking a dishwasher as an example, the arrangement of the filtration device within the dishwasher will now be described.

[0099] In related technologies, the dishwasher includes an inner tub 300 and a cup body 400. After the dishes are cleaned, the washing pump 500 stops working, and the drain pump 600 drains the water in the cup to the municipal pipe network.

[0100] Since the water collected in the water-containing cavity 401 of the cup body 400 is residual water after cleaning the tableware, the filter holes of the filter device are easily clogged when the residual water is filtered through the filter device, which affects the cleaning effect and cleaning efficiency of the tableware.

[0101] In view of the above-mentioned technical problems, this application provides a water cup assembly. Figure 18 A schematic diagram of the water cup assembly is shown. Figure 19 It shows Figure 18 Side view diagram, Figure 20 It shows Figure 18 An explosion diagram. Figure 21 It shows Figure 18 BB cross-sectional diagram, Figure 22 It shows Figure 18 A schematic diagram of the cup's structure. (Combined with...) Figures 18-22 The water cup assembly includes a cup body 400, an auxiliary filter device 200, and a main filter device 100. The cup body 400 is provided with a water-containing cavity 401, which is provided with a main cavity 4011 and a water-distributing cavity 4012 that are in communication. The auxiliary filter device 200 is placed in the water-distributing cavity 4012. The main filter device 100 is connected to both the main cavity 4011 and the auxiliary filter device 200.

[0102] The water cup assembly provided in this application allows residual water after washing dishes to be temporarily stored in the water-containing cavity 401 of the cup body 400. Since the water-containing cavity 401 is divided into a main cavity 4011 and a sub-cavity 4012, and the main cavity 4011 and the sub-cavity 4012 are connected, the washing water entering the main cavity 4011 can flow into the sub-cavity 4012. Because an auxiliary filter device 200 is installed in the sub-cavity 4012, the washing water flowing through the auxiliary filter device 200 in the sub-cavity 4012 can be filtered, improving the cleanliness of the washing water. Since the main filter device 100 is connected to the main cavity 4011, the main filter device 100 can filter the washing water discharged from the main cavity 4011. Under the action of the washing pump 500, the washing water filtered by the auxiliary filter device 200 and the main filter device 100 is transported to the spray arm of the dishwasher to wash the dishes. In actual use, if part of the filter holes of the main filter device 100 is blocked, the auxiliary filter device 200 and the unblocked filter holes of the main filter device 100 can provide enough washing water for the spray arm to avoid affecting the cleaning effect and efficiency of the tableware, which is very practical.

[0103] In one embodiment, the main filter device 100 can be the first filter device 100 described above, and the auxiliary filter device 200 can be the second filter device 200 described above. This allows for the cleaning of foreign objects on the filter element through relatively rotating cleaning or filtering elements, thereby alleviating the technical problem of filter element clogging to a certain extent, improving the smoothness of the medium fluid, ensuring the smooth delivery of washing water, and thus avoiding affecting the cleaning effect and efficiency of the tableware. When the auxiliary filter device 200 adopts the second filter device 200 described above, the second filter chamber of the second filter housing 201 of the second filter device 200 is a water distribution chamber 4012. In another embodiment, the main filter device 100 and the auxiliary filter device 200 can also adopt other types of filter devices, such as filter devices without cleaning elements, etc., which will not be elaborated here. The following is an explanation... Figure 22 -Appendix Figure 23 Further details regarding the specific components of the water cup are described.

[0104] Combination Figure 22 The cup body 400 of the water cup assembly of this application is a container with an open top. A closed container is provided inside the cup body 400. The closed container can be the aforementioned water distribution chamber 4012, or it can be the second filter housing of the second filter device 200. In one embodiment, the water distribution chamber 4012 can be eccentrically arranged with the cup body 400. In another embodiment, the water distribution chamber 4012 can also be concentrically arranged with the cup body 400. There is no limitation here.

[0105] To achieve communication between the main cavity 4011 and the water distribution cavity 4012 within the cup body 400, one or more openings (not shown) can be provided around the water distribution cavity 4012 to connect the main cavity 4011 and the water distribution cavity 4012. This opening is preferably located at the bottom of the water distribution cavity 4012 so that the washing water received by the main cavity 4011 flows into the water distribution cavity 4012, preventing it from remaining at the bottom of the main cavity 4011.

[0106] Figure 23 It shows Figure 22 A structural diagram from another perspective. Combined with... Figure 23 The cup body 400 also has a first water outlet 402 and a second water outlet 403. The first water outlet 402 is connected to the main cavity 4011, and the second water outlet 403 is connected to the water distribution cavity 4012. The first water outlet 402 and the second water outlet 403 can be tube structures and are configured as two water outlet connectors of the cup body 400. Figure 1The first filtration device 100 has two inlets 105, namely a first inlet 1051 and a second inlet 1052. The first inlet 1051 is connected to the first outlet 402, so that the washing water in the main chamber 4011 can directly enter the first filter chamber 104 of the first filtration device 100 through the first outlet 402 and the first inlet 1051, and be discharged from the outlet 106 after being filtered by the first filter element 102 inside. The second inlet 1052 is connected to the second outlet 403, and the washing water filtered by the second filter element 203 of the second filtration device 200 enters the filter chamber of the first filter housing 101 through the second outlet 403 and the second inlet 1052. In one embodiment, the second inlet 1052 is located at the end of the first filter housing 101 of the first filter device 100. The washing water entering the filter chamber of the first filter housing 101 through the second inlet 1052 does not flow through the filter chamber of the first filter housing 101, but is discharged directly from the outlet 106 at the end of the first filter housing 101 of the first filter device 100. In another embodiment, the second inlet 1052 is located on the periphery of the first filter housing 101 of the first filter device 100. The washing water entering the second filter chamber of the first filter housing 101 through the second inlet 1052 flows through the filter chamber of the first filter housing 101 for secondary filtration and is then transported to the spray arm assembly. Alternatively, the first filter device 100 may not have a second inlet 1052, and the second water outlet 403 of the water cup may be directly connected to the washing pump 500. Compared to the first filter device 100 which does not have a second water inlet 1052, the second filter device 200 with a second water inlet 1052 can be connected to the second water outlet 403 and the washing pump 500, which saves more space.

[0107] Therefore, the washing water after washing the tableware enters the main cavity 4011 of the cup body 400 and is divided into two paths. One path enters the water distribution cavity 4012 from the main cavity 4011, and is then conveyed to the spray arm assembly through the second filter element and the second water outlet 403. The other path exits from the first water outlet 402 of the main cavity 4011, is filtered by the first filter element 102 of the first filter device 100, and is then conveyed to the spray arm assembly. Thus, the cup assembly provided in this application offers two cleaning pathways for supplying washing water to the spray arm assembly, ensuring sufficient washing water for use, thereby improving the cleaning effect and efficiency of the tableware, and possessing excellent practicality.

[0108] Combination Figure 23 In some embodiments, the cup body 400 is further provided with a third water outlet 404, which is connected to the positioning recess 2014 of the water distribution cavity 4012. The third water outlet 404 can also be a tube structure and is configured as the third water outlet connector of the water cup. Accordingly, combined with Figure 1The inlet 105 of the first filter device 100 also includes a third inlet 1053, which is connected to the third outlet 404. This allows the washing water in the positioning recess 2014 within the water distribution chamber 4012 to enter the first filter chamber 104 of the first filter device 100 through the third outlet 404 and the third inlet 1053. After being filtered by the first filter element 102 inside, the water is discharged through the outlet 106. This avoids the phenomenon of washing water accumulating in the positioning recess 2014 and causing odors, thereby improving cleaning quality and user experience. In addition, the third outlet 404, the second outlet 403, and the first outlet 402 can form three transport paths, ensuring the flow rate of washing water and avoiding the technical problem of insufficient washing water delivery caused by clogging of the filter holes in the filter device, thus improving the cleaning efficiency of the dishwasher.

[0109] In practice, the first water outlet 402 and the third water outlet 404 on the cup body 400 are positioned as close to the bottom of the cup body 400 as possible to draw out residual water from the cup body 400. This avoids the phenomenon of washing water accumulating in the positioning recess 2014 and causing odors, thereby improving cleaning quality and user experience. The second water outlet 403 can be positioned higher to avoid the first water outlet 402 and the third water outlet 404 and to have a certain height difference, making reasonable use of the dishwasher's internal space.

[0110] Combination Figure 22 as well as Figure 23 The cup body 400 is also provided with a water inlet 405 and one or more fourth water outlets 406. The water inlet 405 is connected to the output of the washing pump 500 to introduce filtered washing water. The water inlet 405 is connected to the fourth water outlet 406, which is used to connect to the spray arm assembly. Therefore, under the action of the washing pump 500, the filtered washing water is discharged to the spray arm assembly of the dishwasher through the water inlet 405 and the fourth water outlet 406, so that the spray arm can spray water to clean the dishes. In one embodiment, there may be two fourth water outlets 406, which are respectively connected to the upper spray arm and the lower spray arm of the spray arm assembly. In another embodiment, there may be three fourth water outlets 406, which are respectively connected to the upper spray arm, the middle spray arm, and the lower spray arm of the spray arm assembly. When multiple fourth water outlets 406 are provided, a connecting cavity (not shown) is also provided on the cup body 400. The connecting cavity is connected to the water inlet 405 and multiple fourth water outlets 406 to distribute the washing water filtered by the water inlet 405 to each of the fourth water outlets 406.

[0111] This application achieves the connection between the washing pump 500 and the spray arm assembly by providing a water inlet 405 and one or more fourth water outlets 406 on the cup body 400, without the need to provide corresponding connecting pipes between the washing pump 500 and the spray arm assembly, which has the effect of compact structure and improved space utilization.

[0112] It should be noted that in other embodiments, the washing pump 500 can also be connected to the spray arm assembly through a structure such as a three-way valve, and this is not a limitation.

[0113] In one embodiment, combined with Figure 22 The cup body 400 is also provided with a drain chamber 407 and a drain channel 408. The drain chamber 407 is located on the periphery of the cup body 400. At least part of the drain pump 600 can be installed in the drain chamber 407. The drain chamber 407 is connected to the interior of the water distribution chamber 4012 through the drain channel 408 to drain the residual water in the cup after the dishes are washed, so that the dishwasher is dry and clean and foreign objects ferment and produce odors.

[0114] Combination Figure 22 as well as Figure 23 The first water outlet 402, the second water outlet 403, the third water outlet 404, and the water inlet 405 are all located on the same side of the cup body 400, facilitating direct connection with the second filter device 200, washing pump 500, etc., eliminating the need for piping, resulting in a compact structure and improved space utilization. The drain chamber 407 is located on the other side of the cup body 400, allowing water circulation and drainage to occur on both sides of the cup body 400, facilitating piping arrangement. The fourth water outlet 406 is located at the top of the cup body 400, facilitating connection with the spray arm assembly above the tableware, saving space. In another embodiment, the drain chamber 407 can also be located on the same side of the cup body 400 as the first water outlet 402, the second water outlet 403, and the third water outlet 404.

[0115] Based on the aforementioned water cup assembly, this application also provides a dishwasher including the aforementioned water cup assembly. The dishwasher with the aforementioned water cup assembly can provide sufficient washing water for the spray arms to avoid affecting the cleaning effect and efficiency of the tableware. Furthermore, it can clean foreign objects on the filter element through relatively rotating cleaning or filtering components, thereby alleviating the technical problem of filter clogging to a certain extent, improving the smoothness of the fluid medium, and ensuring the smooth delivery of washing water to avoid affecting the cleaning effect and efficiency of the tableware, thus possessing excellent practicality.

[0116] Based on the aforementioned water cup assembly, this application also provides a dishwasher water system, which includes a washing pump 500, a drain pump 600, a spray arm assembly 700, and the aforementioned water cup assembly. The main filter device 100 of the water cup assembly is sequentially connected to the washing pump 500 and the spray arm assembly 700, and the drain pump 600 is connected to the water-containing chamber 401. The dishwasher water system with the aforementioned water cup assembly can provide sufficient washing water for the spray arms to avoid affecting the cleaning effect and efficiency of the tableware. Furthermore, the relatively rotating cleaning or filtering components can clean foreign objects on the filter components, alleviating the technical problem of filter clogging to a certain extent, thereby improving the smoothness of the fluid and ensuring the smooth delivery of washing water to avoid affecting the cleaning effect and efficiency of the tableware. This system has excellent practicality.

[0117] The specific workflow of the dishwasher water system provided in this application is as follows:

[0118] When the dishwasher is in operation, the drain pump 600 is turned off. The water used to wash the dishes collects at the bottom of the inner tank 300 and enters the main cavity 4011 of the cup body 400. A portion of the water flows along the first water outlet 402 and the first water inlet 1051 into the first filter device 100. After being filtered by the first filter device 100, the water is output by the washing pump 500 and distributed to each spray arm of the spray arm assembly to clean the dishes. A portion of the water in the main cavity 4011 flows to the water distribution chamber 4012. A portion of the washing water in the water distribution chamber 4012 is filtered by the second filter element 203 and then flows along the second water outlet 403 and the second water inlet 1052 to the second filter device 200. Under the power of the washing pump 500, the water is distributed to each spray arm of the spray arm assembly to clean the dishes.

[0119] After the dishes are cleaned, the drain pump 600 is turned on to discharge the washing water containing contaminants in the main chamber 4011 and the water distribution chamber 4012 of the cup body 400 through the drain channel 408 to the municipal pipe network, so that the dishwasher is dry and clean and to prevent foreign objects from fermenting and producing odors.

[0120] It should be noted that the first filter device 100 and / or the second filter device 200 of this application can be operated at a certain stage of the dishwasher's operation, or after the dishwasher has finished operating, and can be operated by the user through commands. No limitation is made here.

[0121] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0122] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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, they should not be construed as limitations on this application.

[0123] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0124] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0125] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A filter device, characterized in that The filter device comprises: a filter housing provided with a filter cavity, a water inlet and a water outlet communicating with the filter cavity; a filter element arranged in the filter cavity to filter fluid medium flowing through the filter element; a cleaning element arranged in or / and outside the filter element, the filter element and the cleaning element being relatively rotatable.

2. The filter device of claim 1, wherein, The cleaning element is fixed relative to the filter housing, and the filter element is arranged to rotate relative to the filter housing.

3. The filter device of claim 2, wherein, The filter device further comprises: a first driving element having a rotatable output end, the filter element being connected to the output end of the first driving element.

4. The filter device of claim 3, wherein, The first driving element is arranged outside the filter housing, and the output end of the first driving element is connected to a driving shaft which extends into the filter cavity and is connected to a connecting end of the filter element.

5. The filter device of claim 4, wherein, The connecting end of the filter element is provided with a connecting port, and the filter device comprises a mounting element which is fitted into the connecting port and connected to the driving shaft.

6. The filter device of claim 5, wherein, The connecting end of the filter element is provided with a connecting portion, the connecting port is arranged in the connecting portion, a head portion of the mounting element is arranged in the connecting port, a supporting portion is arranged on a circumferential side of the mounting element, and at least a part of the connecting portion is attached to the supporting portion.

7. The filter device of claim 6, wherein, The connecting portion and the circumferential side of the head portion of the mounting element are connected by clamping.

8. The filter device according to any one of claims 5-7, characterized in that A tail portion of the mounting element is provided with a connecting groove, and the driving shaft is connected to the connecting groove.

9. The filter device of claim 8, wherein, A cross section of a portion of the driving shaft connected to the connecting groove is non-circular.

10. The filter device according to any of claims 4-7 and 9, characterized in that The filter cavity is provided with a limiting groove. The filter element is further provided with a positioning end which is arranged opposite to the connecting end and is rotatably arranged in the limiting groove.

11. The filter device of claim 1, wherein, The filter element is arranged to be fixed relative to the filter housing, and the cleaning element is arranged to rotate relative to the filter housing.

12. The filter device of claim 11, wherein, Two ends of the filter element are clamped in the filter cavity.

13. The filter device of claim 11, wherein, The filter device further comprises: a second driving element having a rotatable output end, the cleaning element being connected to the output end of the second driving element.

14. The filter device according to any one of claims 1-7, 9 and 11-13, characterized in that The cleaning element comprises: a cleaning frame arranged in or / and outside the filter element; a cleaning brush connected to the cleaning frame and arranged towards a circumferential side of the filter element.

15. The filter device according to any one of claims 1-7, 9 and 11-13, characterized in that A circumferential side of the filter housing is provided with a water inlet, and an end portion of the filter housing is provided with a water outlet, the water inlet and the water outlet both communicating with the filter cavity.

16. The filter device of claim 15, wherein, An axis of the water inlet and an axis of the filter element do not intersect.

17. The filter device of claim 16, wherein, A water inlet direction of the water inlet is arranged along a tangent direction of a circumferential surface of the filter housing.

18. The filter device according to any one of claims 1-7, 9, 11-13, and 16-17, characterized in that, The housing is connected by two single body structures.

19. An electrical appliance, characterized in that The electric appliance comprises the filter device according to any one of claims 1-18.

20. The appliance of claim 19, wherein, The electric appliance is a dishwasher.

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