Dishwasher and filtering device

Abstract

The application relates to a dish washing machine and a filtering device. During the cleaning process, a driving mechanism drives a blocking element to ascend along the axial direction of a filtering cavity to open a water inlet, and then the water inlet is communicated with a cleaning cavity; washing water and residues in the cleaning cavity enter the filtering cavity through an installation through hole and the water inlet to be filtered and discharged, so that the residues and part of the residual water are left in the filtering cavity. When the dish washing machine stops running, the driving mechanism drives the blocking element to descend along the axial direction of the filtering cavity to block the water inlet, and then the water inlet is cut off from the cleaning cavity, so that the residues and the residual water in the filtering cavity cannot cause secondary pollution to tableware, the tableware can be stored in the cleaning cavity for a long time, and the tableware is convenient to take.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen utensils, in particular to a dishwasher and a filtering device. BACKGROUND

[0002] The dishwasher has been more and more widely applied because it can automatically clean tableware. During the cleaning process of the dishwasher, the washing water washes the tableware, and the washing water with residues is filtered through the filtering device, so that the residues and part of the residual water are stored in the filtering device. When the dishwasher stops running, since the filtering device is in communication with the inner container, the tableware stored in the inner container will be secondarily contaminated. SUMMARY

[0003] The first technical problem solved by the present application is to provide a filtering device which does not cause secondary contamination of tableware.

[0004] The second technical problem solved by the present application is to provide a dishwasher which does not cause secondary contamination of tableware.

[0005] The first technical problem is solved by the following technical scheme:

[0006] A filtering device for a dishwasher, the dishwasher comprising an inner container formed with a cleaning cavity, comprising:

[0007] a water cup mounted to the bottom wall of the inner container, the water cup having a filtering cavity in communication with the cleaning cavity, and the top of the water cup being provided with a water inlet in communication with the filtering cavity;

[0008] a blocking element arranged above the water cup;

[0009] a driving mechanism in transmission connection with the blocking element to drive the blocking element to ascend or descend along the axial direction of the filtering cavity, thereby opening or blocking the water inlet.

[0010] The filtering device has the beneficial effects compared with the background art: the driving mechanism drives the blocking element to ascend along the axial direction of the filtering cavity to open the water inlet, thereby making the water inlet communicate with the cleaning cavity, and the washing water and residues in the cleaning cavity enter the filtering cavity through the mounting through hole and the water inlet for filtering and discharge, so that the residues and part of the residual water are stored in the filtering cavity. The driving mechanism drives the blocking element to descend along the axial direction of the filtering cavity to block the water inlet, thereby making the water inlet cut off the cleaning cavity, which can avoid the residues and residual water in the filtering cavity from causing secondary contamination to the outside.

[0011] In one of the embodiments, the bottom of the cup is provided with a communication port in communication with the filtering cavity, the communication port is arranged opposite to the water inlet port, the driving mechanism comprises a driving member and a transmission member, one end of the transmission member penetrates through the communication port and is connected with the blocking element, the driving member is arranged outside the filtering cavity and is in transmission connection with the other end of the transmission member, so as to drive the blocking element to ascend or descend along the axial direction of the filtering cavity to open or block the water inlet port.

[0012] In one of the embodiments, the filtering device further comprises a first filtering member arranged at least partially in the filtering cavity, one end of the first filtering member is connected with the blocking element, and the other end of the first filtering member is in transmission connection with the transmission member, so as to drive the first filtering member to drive the blocking element to ascend or descend along the axial direction of the filtering cavity to open or block the water inlet port.

[0013] In one of the embodiments, the first filtering member is at least partially sleeved outside the transmission member, the inner side wall of the first filtering member is provided with a first threaded transmission part, and the outer side wall of the first filtering member is provided with a first guide part extending along the axial direction of the filtering cavity; the inner side wall of the filtering cavity is provided with a second guide part in guide cooperation with the first guide part, and the outer side wall of the transmission member is provided with a second threaded transmission part in threaded transmission cooperation with the first threaded transmission part, the driving member drives the transmission member to rotate to drive the first filtering member to drive the blocking element to ascend or descend along the axial direction of the filtering cavity to open or block the water inlet port.

[0014] In one of the embodiments, the filtering device further comprises a second filtering member, the filtering diameter of the second filtering member is smaller than the filtering diameter of the first filtering member, the second filtering member is arranged at least partially in the filtering cavity, the second filtering member is at least partially sleeved outside the first filtering member, and the inner side wall of the second filtering member is provided with the second guide part.

[0015] In one of the embodiments, the outer side wall of the second filtering member is provided with a first positioning part, the inner side wall of the filtering cavity is provided with a second positioning part, and the second positioning part is in positioning cooperation with the first positioning part.

[0016] In one of the embodiments, the driving member is arranged as a servo motor, the transmission member is arranged as a transmission shaft, the rotation output shaft of the servo motor is arranged in parallel and spaced apart from the transmission shaft, the driving mechanism further comprises at least two gears in meshing cooperation, and the servo motor and the transmission shaft are in transmission connection through the at least two gears.

[0017] In one of the embodiments, the transmission member further comprises a transmission ring, one end of the transmission shaft is connected with the transmission ring, the transmission ring is at least partially arranged in the first filter member, and an outer side wall of the transmission ring is provided with the second threaded transmission part.

[0018] In one of the embodiments, the filter device further comprises a sealing element, the sealing element is sleeved on the outer side wall of the transmission shaft, and the transmission shaft is in sealing cooperation with the inner side wall of the communication port.

[0019] In one of the embodiments, a sealing part is arranged on the circumference of the blocking element, and the sealing part is in sealing cooperation with the circumferential side wall of the water inlet port.

[0020] The second technical problem is solved by the following technical scheme:

[0021] A dishwasher comprises the filter device, and a bottom wall of the inner container is provided with a mounting through hole for mounting the water cup, the mounting through hole is in communication with the water inlet port.

[0022] Compared with the background art, the dishwasher has the following beneficial effects: during the cleaning process, the driving mechanism drives the blocking element to ascend along the axial direction of the filter cavity to open the water inlet port, so that the water inlet port is in communication with the cleaning cavity, the washing water and residues in the cleaning cavity enter the filter cavity through the mounting through hole and the water inlet port for filtration and discharge, so that the residues and part of the residual water are retained in the filter cavity. When the dishwasher stops running, the driving mechanism drives the blocking element to descend along the axial direction of the filter cavity to block the water inlet port, so that the water inlet port is cut off from the cleaning cavity, the residues and residual water in the filter cavity can not cause secondary pollution to the tableware, and the tableware can be stored in the cleaning cavity for a long time, which is convenient for use. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated herein for explanation by reference. The present application will become more fully understood from the detailed description and accompanying drawings given below.

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and other accompanying drawings can be obtained by those skilled in the art without any creative effort.

[0025] Figure 1 A structure diagram when the blocking element of the dishwasher blocks the water inlet port;

[0026] Figure 2 AFigure 1 A cross-sectional view of dishwasher AA;

[0027] Figure 3 A schematic diagram of the structure of a dishwasher with its sealing element opening the water inlet according to one embodiment;

[0028] Figure 4 for Figure 3 A cross-sectional view of the dishwasher BB;

[0029] Figure 5 This is an exploded view of a dishwasher from one embodiment.

[0030] Figure 6 for Figure 5 An exploded view of a dishwasher from another perspective;

[0031] Figure 7 for Figure 5 An assembly diagram of the sealing element, first filter element and drive mechanism of the dishwasher;

[0032] Figure 8 for Figure 5 A schematic diagram of the assembly of the sealing element and the first filter element of the dishwasher;

[0033] Figure 9 for Figure 5 An assembly diagram of the second filter element, the first filter element, and the drive ring of a dishwasher;

[0034] Figure 10 for Figure 5 A schematic diagram of the assembly of the water cup and the second filter of the dishwasher.

[0035] Figure label:

[0036] 100. Filter device; 110. Water cup; 111. Filter chamber; 112. Inlet; 113. Outlet; 114. Second positioning part; 115. Connecting port; 120. Sealing element; 121. Sealing part; 130. Drive mechanism; 131. Drive component; 132. Transmission component; 1321. Drive shaft; 1322. Transmission ring; 1323. Second threaded transmission part; 133. Gearbox; 140. First filter element; 141. First threaded transmission part; 142. First guide part; 150. Second filter element; 151. Second guide part; 152. First positioning part; 160. Sealing element; 170. Fastener; 200. Inner liner; 210. Cleaning chamber; 220. Mounting through hole. Detailed Implementation

[0037] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described below in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in many different ways from what is described herein, and should not be construed as being limited to the embodiments set forth herein, but should be understood to include all possible embodiments.

[0038] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.

[0039] In addition, the terms "first", "second", "third" and the like are used only for descriptive purposes, and should not be construed as indicating or implying relative importance or implying a specified number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0040] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0042] It is to be noted that when an element is referred to as being "on" or "connected to" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar terms as used herein are for the purpose of illustration only and do not indicate the only possible orientation of the device.

[0043] As shown in the drawings, Figures 1 to 4 In one embodiment, a dishwasher is provided, comprising a tub 200 and a filter device 100.

[0044] The tub 200 has a washing cavity 210, in which dishes can be placed for washing.

[0045] It is to be understood that the dishwasher further comprises a spray arm and other accessories for spraying washing water, which can be existing components and thus will not be described here.

[0046] The filter device 100 is installed on the bottom wall of the tub 200, so that the filter device 100 can be used to filter residues and avoid blockage during water discharge.

[0047] As shown in the drawings, Figure 3 Specifically, the bottom wall of the tub 200 is provided with a mounting through hole 220, and the filter device 100 can be installed in the mounting through hole 220 by clamping, screwing or other methods.

[0048] In one embodiment, a filter device 100 is provided. It is to be emphasized that in order to facilitate the explanation of the principles of the embodiments of the present application, the filter device 100 is exemplified as being applied to a dishwasher in the following description, which should not be understood as the filter device 100 of the embodiments of the present application being only applicable to a dishwasher. In other embodiments, the filter device 100 can also be applied to other suitable scenarios, such as a washing machine or other equipment.

[0049] As shown in the drawings, Figure 5 and Figure 6 Specifically, the filter device 100 comprises a water cup 110, a blocking element 120 and a driving mechanism 130.

[0050] The water cup 110 can serve as the main support structure of the filter device 100 and can have a cup-shaped or cylindrical structure.

[0051] As shown in the drawings, Figure 10As shown, specifically, the water cup 110 has a filtering cavity 111, and a water inlet 112 is arranged on the top of the water cup 110 and communicates with the filtering cavity 111. Thus, the water cup 110 is installed on the bottom wall of the inner container 200 at the mounting through hole 220 in a clamping, screwing or other manner, so that the mounting through hole 220 communicates with the water inlet 112. The water in the cleaning cavity 210 enters the filtering cavity 111 through the mounting through hole 220 and the water inlet 112 for filtering, so that the residues and part of the residual water are left in the filtering cavity 111.

[0052] Further, in order to avoid leakage at the installation position of the water cup 110, a sealing gasket or sealing glue can be arranged between the water cup 110 and the bottom wall of the inner container 200, so as to ensure that the assembly position of the water cup 110 and the bottom wall of the inner container 200 will not leak.

[0053] In addition, a corresponding mounting flange can be arranged at the circumferential position of the water inlet 112 of the water cup 110, and a corresponding mounting groove is arranged on the circumferential side wall of the mounting through hole 220. The mounting flange is installed in the mounting groove, which increases the contact area of the water cup 110 and the inner container 200, and the sealing performance is better. Of course, a sealing gasket or sealing glue can also be arranged between the mounting flange and the inner side wall of the mounting groove.

[0054] At the same time, in order to facilitate the washing water and residues to enter the filtering cavity 111 through the water inlet 112, the water inlet 112 can be arranged in a flared shape.

[0055] As shown in Figure 5 and Figure 6 can be understood that the water cup 110 also has a water outlet 113 which communicates with the filtering cavity 111. The water outlet 113 can be arranged on the circumferential side wall of the water cup 110.

[0056] The plugging element 120 can be in the form of a plugging cover or a plugging plug.

[0057] Specifically, the plugging element 120 is located above the water cup 110.

[0058] More specifically, the plugging element 120 is located directly above the water inlet 112, and the contour shape of the plugging element 120 matches the contour shape of the water inlet 112.

[0059] The driving mechanism 130 and the plugging element 120 are connected in transmission in a screwing, clamping or other manner, so that the driving mechanism 130 can drive the plugging element 120 to move up and down along the axial direction of the filtering cavity 111 (any arrow direction of the C direction of Figure 5 , so as to open or plug the water inlet 112.

[0060] Specifically, during the cleaning process, the dishwasher drives the blocking element 120 to ascend along the axial direction of the filter cavity 111 to open the water inlet 112, so that the water inlet 112 is in communication with the cleaning cavity 210. The washing water and residues in the cleaning cavity 210 enter the filter cavity 111 through the mounting hole 220 and the water inlet 112 for filtration and discharge, so that the residues and part of the residual water remain in the filter cavity 111. When the dishwasher stops running, the driving mechanism 130 drives the blocking element 120 to descend along the axial direction of the filter cavity 111 to block the water inlet 112, so that the water inlet 112 is cut off from the cleaning cavity 210. This can avoid secondary pollution of the dishes by the residues and residual water in the filter cavity 111, and can store the dishes in the cleaning cavity 210 for a long time, which is convenient for use.

[0061] It can be understood that the opening or blocking of the water inlet 112 by the blocking element 120 can be directly achieved by opening and blocking the water inlet 112, that is, the blocking element 120 is directly separated from or covers the water inlet 112, or the opening or blocking of the water inlet 112 is indirectly achieved by opening or blocking the mounting hole 220, that is, the blocking element 120 is separated from the mounting hole 220 to open the water inlet 112, and the blocking element 120 covers the mounting hole 220 to block the water inlet 112. As long as the water inlet 112 can be in communication or cut off from the cleaning cavity 210 as needed, it is acceptable.

[0062] In addition, as shown in Figure 5 and Figure 6 In order to ensure that the blocking element 120 can effectively block the water inlet 112, a sealing portion 121 can be arranged on the circumference of the blocking element 120. When the blocking element 120 descends to block the water inlet 112, the sealing portion 121 can be in sealing cooperation with the circumferential side wall of the water inlet 112, so as to effectively seal the filter cavity 111 and prevent the odor in the filter cavity 111 from spreading into the cleaning cavity 210 to pollute the dishes.

[0063] The sealing portion 121 can be in the form of a sealing flange, a sealing ring, etc.

[0064] In the embodiments of the present application, the sealing portion 121 can be in the form of a sealing flange. The sealing flange is made of elastic materials such as rubber or silicone, which can deform to tightly contact the circumferential side wall of the water inlet 112 when the sealing flange comes into contact with the circumferential side wall of the water inlet 112, so that the sealing effect is better.

[0065] Considering that the water cup 110 has a small volume, in order to facilitate the arrangement of the driving mechanism 130, as shown in Figure 6As shown, the bottom of the water cup 110 is provided with a communication port 115 that communicates with the filter chamber 111. The communication port 115 is arranged opposite to the water inlet 112, that is, the projection of the water inlet 112 and the projection of the communication port 115 are in a relationship of inclusion or overlap in the vertical direction.

[0066] like Figure 7 As shown, optionally, the drive mechanism 130 includes a drive member 131 and a transmission member 132.

[0067] Specifically, one end of the transmission component 132 passes through the connecting port 115 and is connected to the sealing element 120 by means of screwing or plugging. The driving component 131 is located outside the filter chamber 111, so that the driving component 131 does not occupy the filter space of the filter chamber 111. Furthermore, the other end of the driving component 131 is connected to the transmission component 132, and the driving component 131 transmits power to the transmission component 132, which drives the sealing element 120 to move up and down along the axial direction of the filter chamber 111, thereby enabling the sealing element 120 to open or close the water inlet 112. Moreover, the external location of the driving component 131 and the power transmission of the driving component 131 through the transmission component 132 make the entire drive mechanism 130 compact, which is beneficial to the miniaturization design of the water cup 110.

[0068] The drive component 131 transmits power to the transmission component 132, which in turn drives the sealing element 120 to move up and down along the axial direction of the filter chamber 111. This can be achieved through gear and rack transmission (for example, the drive component 131 is a drive gear, and the transmission component 132 is a transmission rack. The rotation of the drive gear drives the transmission rack to move back and forth along the axial direction of the filter chamber 111, thereby driving the sealing element 120 to move up and down along the axial direction of the filter chamber 111). Alternatively, it can be achieved through the extension and retraction of a telescopic rod, or through the cooperation of a screw and nut. The only requirement is that the sealing element 120 can open or block the inlet 112 as needed.

[0069] Furthermore, it is understood that the connection between the transmission component 132 and the sealing component 120 can be a direct connection or an intermediate component can be present.

[0070] like Figure 7 As shown, in a specific embodiment of this application, the filtration device 100 further includes a first filter element 140 at least partially disposed in the filter chamber 111, thereby using the first filter element 140 to filter the washing water entering the filter chamber 111 and avoid clogging during the water discharge process.

[0071] The first filter 140 can be a cylindrical structure or a columnar structure with a filtering cavity. The outer side wall of the first filter 140 is provided with filter holes. The filter diameter of the filter holes can be flexibly designed or selected according to filtering needs. The first filter 140 can be arranged in the filtering cavity 111 in a plug-in or clamping manner.

[0072] Further, the top end of the first filter 140 is connected to the blocking element 120 in a screwing or clamping manner. The bottom end of the first filter 140 is drivingly connected to the transmission member 132. Thus, the transmission member 132 can transmit power to the first filter 140, so that the first filter 140 can move up and down along the axial direction of the filtering cavity 111, thereby synchronously driving the blocking element 120 to move up and down along the axial direction of the filtering cavity 111 to open or block the water inlet 112. Moreover, the first filter 140 drives the blocking element 120 to move up and down, which does not affect the normal filtering function, and can shorten the length of the transmission member 132, which is beneficial to simplify the structure of the driving mechanism 130.

[0073] It can be understood that the lifting movement of the first filter 140 driven by the transmission member 132 can be directly achieved in a jacking manner, or can be achieved by converting the rotary motion into linear lifting motion. It is only required to satisfy that the first filter 140 can drive the blocking element 120 to move up and down along the axial direction of the filtering cavity 111 to open or block the water inlet 112.

[0074] As shown in Figure 8 and Figure 9 , in some embodiments, the first filter 140 is at least partially sleeved on the outer side of the transmission member 132. The inner side wall of the first filter 140 is provided with a first threaded transmission part 141. The outer side wall of the first filter 140 is provided with a first guide part 142 extending along the axial direction of the filtering cavity 111. Figure 10 As shown in , the inner side wall of the filtering cavity 111 is provided with a second guide part 151 guidingly matched with the first guide part 142. The outer side wall of the transmission member 132 is provided with a second threaded transmission part 1323 threadedly matched with the first threaded transmission part 141. Thus, when the driving member 131 drives the transmission member 132 to rotate, the second threaded transmission part 1323 is synchronously driven to rotate. By the thread transmission cooperation between the second threaded transmission part 1323 and the first threaded transmission part 141, and the guiding cooperation between the second guide part 151 and the first guide part 142, the first filter 140 moves up and down along the axial direction of the filtering cavity 111, thereby synchronously driving the blocking element 120 to move up and down along the axial direction of the filtering cavity 111, and opening or blocking the water inlet 112 can be achieved.

[0075] It can be understood that the rotation of the driving member 131 driving the transmission member 132 means that the power of the driving member 131 is transmitted to the transmission member 132, so that the transmission member 132 rotates around its central axis.

[0076] In some embodiments, the driving member 131 can be a servo motor, and the transmission member 132 can be a transmission shaft 1321. The rotating output shaft of the servo motor is coaxially arranged with the transmission shaft 1321 and is connected with each other, so that the forward rotation and reverse rotation of the servo motor drives the forward rotation and reverse rotation of the transmission shaft 1321. Combined with the threaded transmission cooperation between the second threaded transmission part 1323 and the first threaded transmission part 141, the first filter part 140 is driven to ascend and descend along the axial direction of the filter cavity 111, and the blocking element 120 is synchronously driven to ascend and descend along the axial direction of the filter cavity 111, thereby realizing the opening or blocking of the water inlet 112.

[0077] As shown in Figures 5 to 7 , of course, in other embodiments, the rotating output shaft of the servo motor and the transmission shaft 1321 can also be arranged in parallel and spaced apart, and the power of the rotating output shaft is transmitted to the transmission shaft 1321 through the intermediate element such as the gear box 133 to make the transmission shaft 1321 rotate, as long as the servo motor can drive the transmission shaft 1321 to rotate forward and reverse and ultimately realize the opening or blocking of the water inlet 112. At this time, the servo motor can be arranged on the side (left or right) of the transmission shaft 1321, so as to save the axial space and make the structure more compact, facilitating miniaturization. Moreover, the power transmission is realized by using the gear box 133, so that the transmission is more stable and accurate, and the blocking element 120 can stably ascend and descend. Specifically, the gear box 133 can include at least two gears meshing with each other, and the rotating output shaft of the servo motor and the transmission shaft 1321 are drivingly connected through the at least two gears to realize the transmission of power. More specifically, a corresponding transmission gear can be sleeved on the rotating output shaft and the transmission shaft 1321 to realize the driving connection with the gear box 133, so as to ensure smooth transmission of power.

[0078] Considering that the radial dimension of the first filter part 140 is usually larger than the radial dimension of the transmission member 132, in order to facilitate the machining of the second threaded transmission part 1323 on the end of the transmission member 132 close to the first filter part 140, the transmission member 132 can be arranged in a split structure for separate machining. As shown in Figure 5 、 Figure 6 and Figure 9As shown, specifically, the transmission member 132 further comprises a transmission ring 1322. Specifically, one end of the transmission shaft 1321 is connected with the transmission ring 1322, and the other end of the transmission shaft 1321 is in transmission connection with the gear box 133. Moreover, the transmission ring 1322 is at least partially arranged in the first filter member 140, and the outer side wall of the transmission ring 1322 is provided with a second threaded transmission part 1323. In this way, the rotation movement of the servo motor is transmitted to the transmission shaft 1321, so that the transmission shaft 1321 rotates around its central axis, and in turn the transmission ring 1322 rotates around the central axis of the transmission shaft 1321, and the threaded transmission cooperation between the second threaded transmission part 1323 and the first threaded transmission part 141 is utilized, so that the first filter member 140 performs the lifting movement along the axial direction of the filtering cavity 111. Moreover, the transmission shaft 1321 can be arranged to be relatively thin, and the outer diameter of the transmission ring 1322 can be arranged to match the inner diameter of the first filter member 140, thereby saving the production cost. Moreover, only the second threaded transmission part 1323 needs to be machined on the outer side wall of the transmission ring 1322, thereby reducing the machining difficulty.

[0079] Meanwhile, in order not to affect the filtering effect, the transmission ring 1322 can be designed to have a cylindrical structure with a cavity, the cavity of the transmission ring 1322 can be in communication with the filtering cavity of the first filter member 140, and a corresponding filtering hole can also be arranged on the bottom wall of the transmission ring 1322 to participate in the filtering.

[0080] Among them, the connection between the transmission ring 1322 and the transmission shaft 1321 can be achieved by welding, inserting or screwing, etc., as long as the rotation of the transmission shaft 1321 can drive the transmission ring 1322 to rotate synchronously.

[0081] As shown in Figure 5 and Figure 6 Specifically, in the embodiment of the present application, the bottom wall of the transmission ring 1322 is provided with a first mounting hole, and the top end of the transmission shaft 1321 is provided with a second mounting hole, so that after the second mounting hole and the first mounting hole are in corresponding communication, the fastening cooperation of the fastener 170 and the first mounting hole and the second mounting hole is utilized, thereby stably and reliably connecting the transmission ring 1322 and the transmission shaft 1321 into one. Moreover, the cross-sectional profile of the first mounting hole, the cross-sectional profile of the second mounting hole and the cross-sectional profile of the fastener 170 can be matched with each other, for example, they can be hexagonal.

[0082] Moreover, in order to avoid leakage after the transmission shaft 1321 is arranged in the communication port 115, and to ensure that the transmission shaft 1321 can rotate smoothly relative to the water cup 110, a corresponding sealing element 160 can also be arranged. As shown in Figure 5 and Figure 6As shown, specifically, the sealing element 160 is sleeved on the outer sidewall of the transmission shaft 1321, so that the transmission shaft 1321 is in sealing cooperation with the inner sidewall of the communication port 115, avoiding leaving a gap between the transmission shaft 1321 and the inner sidewall of the communication port 115 to cause leakage. Moreover, the sealing element 160 also does not affect the rotation of the transmission shaft 1321, so that the power can be smoothly output.

[0083] The sealing element 160 can be in the form of a sealing ring or a sealing sleeve, and can be made of an elastic material such as silica gel or rubber, so that the sealing effect is good and the rotation of the rotating shaft is not affected.

[0084] It can also be understood that the threaded transmission cooperation between the first threaded transmission part 141 and the second threaded transmission part 1323 is equivalent to the cooperation structure of a screw nut. When the transmission member 132 provided with the second threaded transmission part 1323 is rotated in different directions, the first filter member 140 provided with the first threaded transmission part 141 can be driven to move linearly and reciprocally.

[0085] Specifically, in the embodiment of the present application, the first threaded transmission part 141 is provided as at least two protrusions arranged in a spiral line, and the second threaded transmission part 1323 is provided as a threaded groove extending in a spiral line. By cooperation of the at least two protrusions and the threaded groove, the first filter member 140 can be driven to move up and down along the axial direction of the filter cavity 111 when the transmission member 132 is rotated forward or reversely.

[0086] In addition, the guiding cooperation of the first guide part 142 and the second guide part 151 can be realized by the cooperation of a sliding block and a sliding groove, or by the cooperation of a guide rail and a guide groove. It is only required to satisfy that the first filter member 140 and the transmission member 132 can be constrained to rotate synchronously to guide the first filter member 140 to move up and down along the axial direction of the filter cavity 111.

[0087] Specifically, in the embodiment of the present application, the first guide part 142 is provided as a guide groove extending along the axial direction of the filter cavity 111, and the second guide part 151 is provided as a guide rib extending along the axial direction of the filter cavity 111. By the guiding cooperation of the guide rib and the guide groove, the first filter member 140 and the transmission member 132 can be constrained to rotate synchronously to guide the first filter member 140 to move up and down along the axial direction of the filter cavity 111.

[0088] In addition, considering that there are residues of different thicknesses and sizes in the washing water, in order to ensure the filtering effect and avoid blockage when water is discharged, the filter cavity 111 is provided with a plurality of filter holes 112, and the first filter member 140 is provided with a plurality of filter holes 141. Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 9 and Figure 10As shown, optionally, the filtration device 100 further includes a second filter element 150, and the filtration diameter of the second filter element 150 is smaller than that of the first filter element 140. In this way, the first filter element 140 and the second filter element 150 can be used to perform targeted dual filtration of residues of different coarseness and size, respectively, to ensure the filtration effect.

[0089] Specifically, the second filter element 150 is at least partially installed inside the filter chamber 111 by means of plugging or snapping, and the second filter element 150 is at least partially sleeved on the outside of the first filter element 140. This allows the second filter element 150 to perform a first filtration of the washing water, followed by a second filtration by the first filter element 140 before entering the outlet 113, effectively filtering out residues in the washing water. Of course, the washing water can also directly enter the outlet 113 after being filtered by the first filter element 140. Simultaneously, the inner wall of the second filter element 150 is provided with a second guide portion 151, which allows the second filter element 150 to constrain the first filter element 140 to rotate synchronously with the transmission component 132, thus guiding the first filter element 140 to move up and down along the axial direction of the filter chamber 111.

[0090] The second filter element 150 can be a cylindrical or columnar structure with a filter cavity. The outer wall of the second filter element 150 is provided with filter holes, and the filter diameter of the filter holes can be flexibly designed or selected according to the filtration needs.

[0091] like Figure 10 As shown, in addition to ensuring accurate assembly of the second filter element 150 and the water cup 110, a first positioning part 152 can be provided on the outer side wall of the second filter element 150, and a corresponding second positioning part 114 can be provided on the inner side wall of the filter cavity 111. The positioning cooperation between the second positioning part 114 and the first positioning part 152 provides positioning and guidance for the assembly of the second filter element 150 and the water cup 110, improving assembly accuracy. Simultaneously, the positioning cooperation between the first positioning part 152 and the second positioning part 114 also prevents the second filter element 150 from rotating relative to the water cup 110, ensuring that the second filter element 150 can constrain the first filter element 140 and the transmission member 132 to rotate synchronously, thus guiding the first filter element 140 to move up and down along the axial direction of the filter cavity 111.

[0092] The positioning cooperation between the first positioning part 152 and the second positioning part 114 can be achieved by the cooperation of the positioning protrusion and the positioning groove, or by the cooperation of the hook and the groove. As long as it can guide and position the assembly of the second filter element 150 and the water cup 110, and can also prevent the second filter element 150 from rotating relative to the water cup 110.

[0093] Specific to the embodiments of the present application, the first positioning part 152 is provided as a boss, and the second positioning part 114 is provided as a groove. When the second filter 150 is installed into the filter cavity 111, the boss and the groove are inserted and fitted to realize the positioning and installation of the second filter 150 and the water cup 110, and meanwhile, the rotation of the second filter 150 relative to the water cup 110 around the central axis of the filter cavity 111 is constrained.

[0094] Further, in order to strengthen the filtering effect, a filter screen plate or the like element can be sleeved on the outer sidewall of the second filter 150. After the second filter 150 is installed into the filter cavity 111, the filter screen plate is covered on the installation through hole 220, and the filtering of the washing water is also realized.

[0095] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0096] The above-described embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, however, it should not be understood as the limitation of the patent scope of the present application. It should be pointed out that, for the ordinary skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A filtration device for a dishwasher, the dishwasher comprising an inner tub (200) forming a cleaning chamber (210), characterized in that, include: A water cup (110) is installed on the bottom wall of the inner liner (200). The water cup (110) has a filter chamber (111) communicating with the cleaning chamber (210) and a water outlet (113) communicating with the filter chamber (111). The top of the water cup (110) is provided with a water inlet (112) communicating with the filter chamber (111). The bottom of the water cup (110) is provided with a connecting port (115) communicating with the filter chamber (111). The connecting port (115) is arranged opposite to the water inlet (112). A sealing element (120) is disposed above the water cup (110); The drive mechanism (130) includes a drive member (131) and a transmission member (132). One end of the transmission member (132) passes through the communication port (115) and is connected to the sealing element (120). The drive member (131) is located outside the filter chamber (111) and is connected to the other end of the transmission member (132) to drive the sealing element (120) to move up and down along the axial direction of the filter chamber (111) to open or block the water inlet (112). The filtration device further includes a first filter element (140) at least partially disposed in the filtration chamber (111). One end of the first filter element (140) is connected to the sealing element (120), and the other end of the first filter element (140) is connected to the transmission element (132) for transmission, so that the first filter element (140) drives the sealing element (120) to move up and down along the axial direction of the filtration chamber (111) to open or block the water inlet (112).

2. The filtration device according to claim 1, characterized in that, The sealing element (120) is located directly above the inlet (112); the outline shape of the sealing element (120) matches the outline shape of the inlet (112).

3. The filtration device according to claim 2, characterized in that, The first filter element (140) is at least partially sleeved on the outside of the transmission element (132), and the inner wall of the first filter element (140) is provided with a first threaded transmission part (141), and the outer wall of the first filter element (140) is provided with a first guide part (142) extending axially along the filter cavity (111); the inner wall of the filter cavity (111) is provided with a second guide part (151) that guides and cooperates with the first guide part (142), and the outer wall of the transmission element (132) is provided with a second threaded transmission part (1323) that threadedly cooperates with the first threaded transmission part (141). The driving element (131) drives the transmission element (132) to rotate so as to drive the first filter element (140) to drive the sealing element (120) to move up and down axially along the filter cavity (111) to open or block the water inlet (112).

4. The filtration device according to claim 3, characterized in that, The filtration device further includes a second filter element (150), the second filter element (150) having a filtration diameter larger than that of the first filter element (140), the second filter element (150) being at least partially disposed within the filtration chamber (111), the second filter element (150) being at least partially sleeved on the outside of the first filter element (140), and the inner sidewall of the second filter element (150) being provided with a second guide portion (151).

5. The filtration device according to claim 4, characterized in that, The outer side wall of the second filter element (150) is provided with a first positioning part (152), and the inner side wall of the filter cavity (111) is provided with a second positioning part (114). The second positioning part (114) is positioned and cooperates with the first positioning part (152).

6. The filtration device according to claim 3, characterized in that, The driving component (131) is a servo motor, and the transmission component (132) is a transmission shaft (1321). The rotation output shaft of the servo motor is parallel to and spaced apart from the transmission shaft (1321). The driving mechanism (130) also includes at least two meshing gears, through which the servo motor and the transmission shaft (1321) are connected for transmission.

7. The filtration device according to claim 6, characterized in that, The transmission component (132) further includes a transmission ring (1322), one end of the transmission shaft (1321) is connected to the transmission ring (1322), the transmission ring (1322) is at least partially disposed inside the first filter (140), and the outer side wall of the transmission ring (1322) is provided with a second threaded transmission part (1323).

8. The filtration device according to claim 7, characterized in that, The filter device also includes a sealing element (160), which is sleeved on the outer wall of the drive shaft (1321) so that the drive shaft (1321) and the inner wall of the communication port (115) are sealed together.

9. The filtration device according to any one of claims 1 to 8, characterized in that, The sealing element (120) is provided with a sealing part (121) in the circumferential direction, and the sealing part (121) can be sealed and fitted with the circumferential sidewall of the inlet (112).

10. A dishwasher, characterized in that, Includes an inner liner (200) and a filter device (100) as described in any one of claims 1 to 9, wherein the bottom wall of the inner liner (200) is provided with a mounting through hole (220) for mounting the water cup (110), and the mounting through hole (220) is connected to the water inlet (112).

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