Filter assembly and dish washing machine

Abstract

The utility model discloses a filtering assembly and a dish-washing machine, the filtering assembly comprises a water cup, the water cup is provided with a water collecting cavity and a filtering cavity communicated with the water collecting cavity, the water collecting cavity is used for collecting washing water; the filter screen is arranged in the filter cavity and is used for separating residues and water in the washing water; the circulating pump is used for pumping water separated from the washing water; and the draining pump is used for draining residues separated from the washing water. According to the filtering assembly disclosed by the embodiment of the utility model, washing water can be collected by utilizing the water collecting cavity and is filtered by utilizing the filter screen, so that the filtering effect and the filtering efficiency of the washing water can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, and particularly relates to a filtering component and a dishwasher Background Art

[0002] The dishwasher uses internal circulating water for jet dishwashing to reduce water consumption. During the dishwashing process, food residues enter the water and are filtered through a filter screen. As the food residues accumulate, the holes in the filter screen are gradually blocked by large particles, the water intake of the water pump gradually decreases, affecting the water jet intensity of dishwashing and resulting in unclean tableware washing. To ensure the dishwashing effect of the dishwasher, the user must clean the filter screen regularly

[0003] In the existing internal circulation system, the residues are continuously washed by the circulating water. Small particle residues will enter the cleaning water and be carried to the tableware, resulting in secondary pollution of the tableware. To ensure the dishwashing effect of the dishwasher, there are usually the following solutions: 1) increasing the area of the filter screen to reduce the frequency of user cleaning of the filter screen; 2) using a scraper to clean on the side where the residues accumulate on the filter screen

[0004] However, increasing the area of the filter screen increases the cost of the filter screen; when cleaning with a scraper, the residues will be squeezed, and the residues will pass through the filter screen and enter the water pump, forming secondary pollution, affecting the cleaning effect, the performance and service life of the filter screen, and also increasing the secondary pollution and affecting the cleaning effect. In addition, the residues adhere to the filter screen and are difficult to discharge Summary of the Utility Model

[0005] An object of the utility model is to provide a filtering component, which can collect washing water by using a water collecting cavity and filter it by using a filter screen, and can improve the filtering effect and filtering efficiency of the washing water

[0006] Another object of the utility model is to provide a dishwasher

[0007] The filtering component according to an embodiment of the utility model is used for a dishwasher, and the filtering component includes: a water cup, the water cup is provided with a water collecting cavity and a filtering cavity communicating with the water collecting cavity, the water collecting cavity is used for collecting washing water; a filter screen, the filter screen is arranged in the filtering cavity and is used for separating residues and water in the washing water; a circulation pump, the circulation pump is used for pumping the water separated from the washing water; a drainage pump, the drainage pump is used for discharging the residues separated from the washing water

[0008] The filtering component according to an embodiment of the utility model can collect washing water by using a water collecting cavity and filter it by using a filter screen, and can improve the filtering effect and filtering efficiency of the washing water

[0009] In addition, the filtering component according to the above embodiment of the utility model may further have the following additional technical features

[0010] In some embodiments, the filtering component further includes a flushing device configured to flush the filter net.

[0011] In some embodiments, the flushing device is disposed downstream of the filter net and has a nozzle for spraying water toward the filter net.

[0012] In some embodiments, the filter net is configured as a cylinder, and the flushing device includes at least one backwashing spray arm disposed inside the filter net, and the nozzle is disposed on the backwashing spray arm.

[0013] In some embodiments, the backwashing spray arm is configured to extend along the axial direction of the filter net and deviate from the central axis of the filter net, and the water spraying range of the nozzle of the at least one backwashing spray arm covers the filter net along the axial direction of the filter net.

[0014] In some embodiments, the flushing device communicates with the outlet of the circulation pump; and / or, the water cup is provided with a water distribution structure for connecting the spray arm, the outlet of the circulation pump communicates with the water distribution structure, the circulation pump is connected with a flushing branch, one end of the flushing branch communicates with the outlet, and the other end communicates with the flushing device.

[0015] In some embodiments, the filter net is rotatably disposed in the filtering chamber.

[0016] In some embodiments, the filter net is configured to rotate freely; or, the filtering component further includes a driving member, the driving member is in transmission connection with the filter net, and the driving member is used to drive the filter net to rotate.

[0017] In some embodiments, the filtering component further includes a flow disturbing member for the filtering chamber, and the flow disturbing member for the filtering chamber is disposed in the filtering chamber and is used to agitate the washing water in the filtering chamber.

[0018] In some embodiments, the flow disturbing member for the filtering chamber is rotatably disposed in the filtering chamber; or, the flow disturbing member for the filtering chamber includes a plurality of blades spaced apart along the circumferential direction; or, the flow disturbing member for the filtering chamber is relatively stationary with respect to the filter net or relatively stationary with respect to the filtering chamber; or, at least a part of the flow disturbing member for the filtering chamber is located in the lower part of the filtering chamber.

[0019] In some embodiments, the filter net is configured as a cylinder, the peripheral wall of the filter net is used to filter the washing water, the circulation pump communicates with the inside of the filter net, and the outer space of the filter net communicates with the water collecting chamber and the drainage pump.

[0020] In some embodiments, the water collecting chamber and the filtering chamber are arranged side by side, and the peripheral wall of the water collecting chamber is provided with a filtering chamber inlet communicating with the filtering chamber.

[0021] In some embodiments, the peripheral wall of the filtering chamber is provided with ventilation holes, which are arranged on the upper side of the peripheral wall of the filtering chamber and communicate with the external space of the water cup to balance the internal and external air pressures of the filtering chamber.

[0022] In some embodiments, the aperture of the filter screen of the filter net is set to be not less than 0.1 mm and not more than 1 mm; or, the aperture of the filter screen of the filter net is set to be not less than 0.6 mm and not more than 1 mm.

[0023] In some embodiments, the water collecting chamber and the filtering chamber extend in the up and down direction and penetrate through the top surface of the water cup. The upper end opening of the water collecting chamber forms a water inlet, and the upper end of the filtering chamber is provided with a filtering chamber cover for closing the filtering chamber.

[0024] In some embodiments, the filter net is positioned on the filtering chamber cover; and / or, the filtering chamber cover is detachably connected to the water cup.

[0025] The dishwasher according to an embodiment of the present invention includes the aforementioned filtering assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of a filtering assembly according to an embodiment of the present invention.

[0027] Figure 2 is a three-dimensional schematic diagram of a filtering assembly according to an embodiment of the present invention in one direction.

[0028] Figure 3 is a three-dimensional schematic diagram of a filtering assembly according to an embodiment of the present invention in another direction.

[0029] Figure 4 is a cross-sectional view of a filtering assembly according to an embodiment of the present invention.

[0030] Figure 5 is a cross-sectional view of a filtering assembly according to an embodiment of the present invention.

[0031] Figure 6 is an exploded schematic diagram of a filtering assembly according to an embodiment of the present invention.

[0032] Figure 7 is a cross-sectional view of a filtering assembly according to another embodiment of the present invention.

[0033] Reference numerals: 10, filtering component; 11, water cup; 111, flow channel plate; 112, water distribution structure; 101, water collection cavity; 106, filtering cavity; 171, filter screen; 172, filtering cavity inlet; 173, filtering cavity outlet; 161, circulation pump; 162, drainage pump; 18, flushing device; 181, backwashing spray arm; 13, driving member; 141, first gear; 143, third gear; 174, filtering cavity turbulence member; 175, filtering cavity cover; 151, flat filter screen; 152, filter cup. Detailed implementation manners

[0034] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation to the present utility model.

[0035] As Figures 1 to 7 , the filtering component 10 according to the embodiment of the present utility model is used for a dishwasher. The filtering component 10 includes: a water cup 11. The water cup 11 is provided with a water collection cavity 101 and a filtering cavity 106 communicating with the water collection cavity 101. The water collection cavity 101 is used for collecting washing water. The filtering component 10 further includes a filter screen 171. The filter screen 171 is disposed in the filtering cavity 106 and is used for separating residues and water in the washing water. In addition, the filtering component 10 further includes a circulation pump 161 and a drainage pump 162. The circulation pump 161 is used for pumping the water separated from the washing water; the drainage pump 162 is used for discharging the residues separated from the washing water. The filtering cavity 106 may be provided with a filtering cavity inlet 172 and a filtering cavity outlet 173. Among them, the filtering cavity inlet 172 may communicate with the water collection cavity 101. The filtering cavity 106 may be connected to the circulation pump 161. The drainage pump 162 may be connected to the filtering cavity inlet 172 or a slag discharge structure disposed in the filtering cavity 106.

[0036] Specifically, during the washing process of the dishwasher, the washing water converges into the water collection cavity 101, and then the washing water enters the filtering cavity 106 from the water collection cavity 101. Under the filtering action of the filter screen 171, water residue separation is achieved. The filtered water leads to the circulation pump 161. Under the driving action of the circulation pump 161, the water sent out from the filtering cavity outlet 173 is sent into the spray arm to wash the tableware by using the spray arm. The water sprayed by the spray arm converges into the water collection cavity 101 after washing the tableware; during the drainage process, the residues are discharged by using the drainage pump 162.

[0037] The filtering component 10 according to the embodiment of the present utility model can collect the washing water by using the water collection cavity 101 and perform filtration by using the filter screen 171, which can improve the filtering effect and filtering efficiency of the washing water.

[0038] Among them, the inside of the filtration chamber 106 in the present utility model can be set to be suitable for temporarily storing residues, and a slag discharge port is provided in the filtration chamber 106 for discharging slag. The drainage pump 162 can be communicated with the slag discharge port, and a switching valve can be provided at the slag discharge port, so as to close the slag discharge port during the filtration process of the filtration assembly 10 and open the slag discharge port during the slag discharge process. The switching valve can be a one-way valve.

[0039] For example Figures 4 to 6 , in some embodiments, the filtration assembly 10 further includes a flushing device 18, and the flushing device 18 is configured to flush the filter screen 171. Through the flushing device 18, the surface cleaning of the filter screen 171 can be realized to maintain the filtration performance of the filter screen 171.

[0040] Optionally, the flushing device 18 is arranged downstream of the filter screen 171 and has a nozzle for spraying water towards the filter screen 171. Thus, the reverse flushing of the filter screen 171 can be realized to improve the cleaning effect on the filter screen 171. Of course, the flushing device 18 can also be arranged upstream of the filter screen 171 and spray water towards the filter screen 171, which can also realize the cleaning of the filter screen 171.

[0041] Furthermore, for example Figure 4 and Figure 5 , the filter screen 171 is set to be cylindrical. The inner space of the filter screen 171 is communicated with the circulation pump 161, and the outer space is communicated with the water collecting chamber 101 and the drainage pump 162. When the filter screen 171 performs filtration, the washing water can flow from the outer space of the filter screen 171 to the inner space of the filter screen 171, and the peripheral wall of the filter screen 171 is used for filtration. The outer space of the filter screen 171 is configured as the upstream of the filter screen 171, and the inner space of the filter screen 171 is configured as the downstream of the filter screen 171. Optionally, the flushing device 18 includes at least one backwashing spray arm 181 arranged inside the filter screen 171, and the nozzle is arranged on the backwashing spray arm 181 and faces the filter screen 171. The backwashing spray arm 181 can be used to quickly clean the filter screen 171 and improve the cleaning efficiency and effect on the filter screen.

[0042] Optionally, the backflush spray arm 181 is arranged to extend along the axial direction of the filter net 171 and deviate from the central axis of the filter net 171, so that the spray nozzles of the backflush spray arm 181 can be close to the peripheral wall of the filter net 171, improving the impact force of the water flow on the filter net 171 and the flushing effect. The water spray range of the spray nozzles of at least one backflush spray arm 181 covers the filter net 171 along the axial direction of the filter net 171. That is to say, the flushing area of the backflush spray arm 181 can cover the entire filter net 171 along the axial direction, thereby increasing the flushing range of the filter net 171 to achieve effective flushing. In addition, the filter net 171 of the present utility model can be arranged to be rotatable. In this way, during the flushing process, the entire filter net 171 can be flushed and cleaned by the backflush spray arm 181.

[0043] Optionally, there can be multiple backflush spray arms 181. The multiple backflush spray arms 181 can be circumferentially distributed along the filter net 171. In this way, by using the spray nozzles of the multiple backflush spray arms 181 to cover the filtering area of the filter net 171, the arrangement density of the spray nozzles of the backflush spray arm 181 can be reduced, facilitating the improvement of the structural strength of the backflush spray arm 181 and the impact force of the spray nozzles.

[0044] In some embodiments, the flushing device 18 is connected to the outlet of the circulation pump 161. The circulation pump 161 can be used to transport the water for flushing to the flushing device 18, and the pumping action of the circulation pump 161 can be used to achieve the backflush cleaning of the filter net 171. The structure of the filtering component 10 can be simplified, and during the process of the dishwasher washing tableware, the reverse flushing of the filter net 171 can be simultaneously achieved, thereby improving the filtering efficiency and effect of the filtering component 10.

[0045] Optionally, the water cup 11 is provided with a water distribution structure 112 for connecting the spray arm. The outlet of the circulation pump 161 is connected to the water distribution structure 112. The circulation pump 161 is connected with a flushing branch. One end of the flushing branch is connected to the outlet, and the other end is connected to the flushing device 18. The structure of the filtering component 10 can be further simplified, and the cleaning efficiency and effect of the filter net 171 can be improved.

[0046] In other embodiments of the present utility model, the filter net 171 is rotatably arranged in the filtering cavity 106. The rotation of the filter net 171 can be used to achieve the surface cleaning of the filter screen to maintain the filtering performance of the filter net 171. In addition, in combination with the aforementioned flushing device 18, the flushing device 18 can cover the filter net 171 along the axial direction of the filter net 171, and at the same time, the rotation of the filter net 171 can achieve the comprehensive flushing of the filter net 171 and improve the efficiency and effect of the surface cleaning of the filter net 171. In addition, the centrifugal force during the rotation of the filter net 171 will cause the residues attached to the surface to separate from the filter net 171; the relative movement between the filter net 171 and the water will also cause the residues attached to the surface to separate from the filter net 171.

[0047] In some examples, the filter screen 171 can be set to rotate freely. That is to say, the filter screen 171 can be set to rotate under the driving action of the water flow, which can simplify the structure of the filter assembly 10 and facilitate the surface cleaning of the filter screen 171 during the filtering process.

[0048] In other examples, such as Figures 4 to 6 , the filter assembly 10 further includes a driving member 13. The driving member 13 is in transmission connection with the filter screen 171, and the driving member 13 is used to drive the filter screen 171 to rotate. That is, the driving member 13 can be used to drive the filter screen 171 to rotate, realizing the passive rotation of the filter screen 171, so as to further improve the surface cleanliness of the filter screen 171 and the filtering effect of the filter screen 171.

[0049] Optionally, the driving member 13 is arranged side by side on the outer side of the water cup 11. The filter assembly 10 further includes a transmission assembly. The transmission assembly is respectively in transmission connection with the driving member 13 and the filter screen 171, and is used to transmit the rotational motion of the driving shaft of the driving member 13 to the filter screen 171. The arrangement of the components of the filter assembly 10 can be optimized, the size of the filter assembly 10 in the up and down direction can be reduced, and the space utilization rate of the filter assembly 10 can be improved.

[0050] Among them, such as Figure 5 and Figure 6 , the transmission assembly can include a first gear 141 and a third gear 143. The first gear 141 is in transmission connection with the driving member 13, the third gear 143 is in transmission connection with the first gear 141, and the second gear is in transmission connection with the filter screen 171. Among them, the transmission assembly can be arranged on the bottom wall of the water cup 11. In addition, the filter chamber outlet 173 can also be arranged on the bottom wall of the water cup 11, and a flow channel is integrated in the bottom wall of the water cup 11 for communicating with the circulation pump 161.

[0051] Optionally, a flow channel plate 111 is provided at the bottom of the water cup 11. The filter chamber outlet 173 is arranged on the flow channel plate 111. A flow channel communicating with the filter chamber outlet 173 and the circulation pump 161 is provided in the flow channel plate 111. In addition, a gear chamber is also provided on the flow channel plate 111, and the first gear 141 and the third gear 143 are arranged in the gear chamber.

[0052] The transmission assembly can also include a first shaft. An installation hole is provided at the upper end of the filter screen 171. The upper end of the first shaft passes through the installation hole. A spline fit or the like can be set between the first shaft and the installation hole, so as to facilitate the rotation of the filter screen 171 driven by the centrifugal force of the first shaft. The lower end of the first shaft is connected to the third gear 143. The driving shaft of the driving member 13 is connected to the first gear 141. The lower end of the first shaft passes through the hole on the flow channel plate 111, and a bearing and an oil seal are provided.

[0053] Such as Figure 7, in some embodiments, the filtration component 10 further includes a filtration chamber turbulence inducer 174 disposed in the filtration chamber 106 for agitating the washing water in the filtration chamber 106. The filtration chamber turbulence inducer 174 can be used to promote turbulence in the filtration chamber 106, facilitating the collection of residues. When discharging residues from the filtration chamber 106, the filtration chamber turbulence inducer 174 can also be used to turbulently flow the fluid in the filtration chamber 106, so as to empty the residues in the filtration chamber 106, facilitating the cleaning of the dishwasher, avoiding bacterial growth, and improving the cleaning effect and safety of the dishwasher.

[0054] The filtration chamber turbulence inducer 174 of the present utility model can have, including but not limited to, the following implementation manners and their combinations.

[0055] Embodiment 1, the filtration chamber turbulence inducer 174 is rotatably disposed in the filtration chamber 106, and the filtration chamber turbulence inducer 174 can turbulently flow the fluid in the filtration chamber 106 by rotation.

[0056] Embodiment 2, the filtration chamber turbulence inducer 174 includes a plurality of blades spaced circumferentially, which can improve the turbulence effect on the fluid in the filtration chamber 106. The filtration chamber turbulence inducer 174 can be configured to rotate around the circumferential axis. In this way, during the rotation of the filtration chamber turbulence inducer 174, the plurality of blades can be used to turbulently flow the fluid in the filtration chamber 106. Optionally, the filtration chamber 106 is provided with a rotatable filter net 171, and blades are provided at the end of the filter net 171 to agitate the mixture of residues and water in the filtration chamber 106, facilitating the discharge of residues. Blades are provided at one end of the filter net 171, and during rotation, the water can be pushed to wash the surface of the side filter net, separating the residues from the filter net.

[0057] Embodiment 3, the filtration chamber turbulence inducer 174 is relatively stationary with respect to the filter net 171. When the filter net 171 rotates, it can drive the filtration chamber turbulence inducer 174 to rotate, thereby simplifying the drive structure of the filtration chamber turbulence inducer 174.

[0058] Embodiment 4, the filtration chamber turbulence inducer 174 can also be set to be relatively stationary with respect to the filtration chamber 106. In this way, when water flows through the filtration chamber turbulence inducer 174, eddies will be generated, and the eddies can be used to disturb the water flow.

[0059] Embodiment 5, at least a part of the filtration chamber turbulence inducer 174 is located in the lower part of the filtration chamber 106, which can improve the turbulence effect on the fluid in the filtration chamber 106.

[0060] Embodiment 6, the filtration chamber turbulence inducer 174 is connected to the lower end of the filter net 171 and is distributed along the direction around the filter net 171.

[0061] Such as Figure 5, In some embodiments, the filter net 171 is provided in a cylindrical shape. The peripheral wall of the filter net 171 is used to filter the washing water. The circulation pump 161 is connected to the inside of the filter net 171, and the outer space of the filter net 171 communicates with the water collecting chamber 101 and the drainage pump 162. The filtering area of the filter net 171 can be increased, so as to achieve a larger flow rate of filtration, ensuring the washing efficiency of the dishwasher. Combining the foregoing, the filter net 171 is rotatably arranged around the axis of the filter net 171 in the filtering chamber 106. The filtering chamber 106 can be provided with a filtering chamber outlet 173, and the inner space of the filter net 171 faces the filtering chamber outlet 173.

[0062] In some embodiments, the water collecting chamber 101 and the filtering chamber 106 are arranged side by side, and the peripheral wall of the filtering chamber 106 is provided with a filtering chamber inlet 172 communicating with the water collecting chamber 101. It is convenient for the washing water in the water collecting chamber 101 to flow into the filtering chamber 106, which can not only facilitate the collection of the washing water in the water collecting chamber 101, but also facilitate the filtration of the washing water and the retention of residues in the washing chamber.

[0063] Optionally, the peripheral wall of the filtering chamber 106 is provided with ventilation holes, which are arranged on the upper side of the peripheral wall of the filtering chamber 106 and communicate with the external space of the water cup 11 to balance the internal and external air pressures of the filtering chamber 106. It is convenient for the washing water in the water collecting chamber 101 to be discharged into the filtering chamber 106, which is beneficial to the filtration of the washing water through the filtering assembly 10, effectively improving the filtration efficiency and effect.

[0064] In some embodiments, the mesh aperture of the filter net 171 is set to be not less than 0.1 mm and not more than 1 mm. When the filter net 171 is rotatable and the rotation speed is relatively high (for example, greater than 1000 rpm), the mesh aperture of the filter net 171 can be appropriately enlarged. Optionally, the mesh aperture of the filter net 171 is set to be not less than 0.6 mm and not more than 1 mm. For example, the mesh aperture of the filter net 171 can be set to 0.1 mm, 0.2 mm, 0.35 mm, 0.5 mm, 0.6 mm, 0.75 mm or 1 mm, etc. Of course, when the rotation speed of the filter net 171 is relatively low (for example, not greater than 1000 rpm), the mesh aperture of the filter net 171 can be appropriately reduced.

[0065] In some embodiments, such as Figure 4 , the water collecting chamber 101 and the filtering chamber 106 extend in the vertical direction. The upper end of the water collecting chamber 101 penetrates the top surface of the water cup 11, and the upper end opening of the water collecting chamber 101 constructs a water inlet. The upper end of the filtering chamber 106 penetrates the top surface of the water cup 11, and the upper end of the filtering chamber 106 is provided with a filtering chamber cover 175 for closing the filtering chamber 106. Thus, it is convenient for the assembly and maintenance of the centrifugal component, and the assembly efficiency of the centrifugal component is improved.

[0066] The filter screen 171 is positioned on the filter chamber cover 175, so that the filter chamber cover 175 can be quickly assembled. Optionally, the filter chamber cover 175 is detachably connected to the water cup 11. This facilitates the quick assembly and disassembly of the filter chamber cover 175, improves the stability of the centrifugal assembly, and makes it easy to check the status of the filter chamber 106, so as to facilitate the cleaning of the centrifugal assembly.

[0067] The filter chamber cover 175 covers the water cup 11 and closes the filter chamber 106. The filter chamber cover 175 has a groove on its circumferential surface. The centrifugal seal ring is arranged along the circumference of the filter chamber cover 175 and fits in the groove. The centrifugal seal ring closes the gap between the filter chamber cover 175 and the inner circumferential surface of the filter chamber 106. In addition, the filter chamber cover 175 is also provided with a bearing. The upper end of the filter screen 171 is connected to the bearing, and the bearing is used to realize the rotation connection between the filter screen 171 and the filter chamber cover 175. The upper end of the filter screen 171 is rotationally connected to the filter chamber 106, and the lower end is rotationally connected to the water cup 11.

[0068] A flow path is provided in the flow channel plate 111, one end of the flow path is connected to the filter chamber outlet 173, and the other end is connected to the circulation pump 161. An opening connected to the circulation pump 161 is provided on the peripheral wall of the filter chamber outlet 173, and an opening for the second shaft to pass through is provided on the bottom wall, and an oil seal and a bearing are provided between the second shaft and the flow channel plate 111.

[0069] In some embodiments, the centrifugal assembly further includes: a plane filter 151, the plane filter 151 has an opening, and the plane filter 151 is set to be inclined downward from the periphery to the opening, and the upper end of the water collection chamber 101 is open and opposite to the opening; a filter cup 152, and the filter cup 152 is inserted through the opening and the water collection chamber 101. The plane filter 151 can be used to filter the washing water once, further improving the filtering effect of the washing water. In addition, the filter cup 152 can retain larger residues, and the centrifugal assembly can be cleaned by removing the filter. The filter (filter cup 152 and / or filter 171) in the utility model can be set as an easy-to-assemble and disassemble structure, and can be taken out from the inside of the cleaning chamber to facilitate later maintenance.

[0070] The dishwasher according to the embodiment of the utility model comprises the aforementioned filter assembly 10 .

[0071] The filter assembly 10 of the present invention may include multiple stages of filtration.

[0072] The primary filtration includes a flat filter screen 151 and a filter cup 152. During the cleaning process, after water rinses the surface of the tableware, the water carries the residues to the bottom of the cleaning cavity, flows through the flat filter screen 151 and converges into the water collection cavity 101. Residues smaller than the pore size of the flat filter screen 151 (the pore size of the flat filter screen 151 is 0.5 - 2 mm) enter the water collection cavity 101. Residues larger than the pore size of the flat filter screen 151 enter the filter cup 152. The filter cup 152 has two pore sizes. The pore size on the side of the filter cup 152 is small and can be set to 0.5 - 3 mm. The pore size at the bottom of the filter cup 152 is large and can be set to 5 - 10 mm. Residues larger than the pore size at the bottom of the filter cup 152 need to be manually cleaned. Residues smaller than the pore size at the bottom of the filter cup 152 and larger than the pore size on the side are discharged by the drain pump 162 during drainage. Residues smaller than the pore size on the side of the filter cup 152 enter the filtration cavity 106. The primary filtration achieves the filtration of residues larger than 3 mm.

[0073] The secondary filtration includes modules such as a filter net 171 and a driving member 13. The pore size of the filter net 171 can be set to 0.4 - 0.1 mm, preferably 0.25 - 0.35 mm. The water and residues entering the filtration cavity 106 are filtered through the filter net 171. Tiny particles smaller than the filter net can pass through the filter net and enter the circulation pump 161 together with the water. Additionally, the secondary filtration can also include a filter net 171. The pore size of the filter net 171 can be set to be the same as that of the filter net 171. Residues larger than the pore size of the filter net 171 (with a size of 0.1 - 3 mm) enter the filtration cavity 106. During drainage, the residues in the filtration cavity 106 are discharged by the drain pump 162. The filter net 171 of the secondary filtration is driven to rotate by the driving member 13. Under the action of centrifugal force, the residues are separated from the filter net.

[0074] Specifically, the water after multi-stage filtration is pressurized by the circulation pump 161. Most of the water enters the spray channel through the water distribution valve module. A small part of the water enters the backwash channel through the backwash water outlet formed on the pump outlet channel, then is split into multiple backwash spray arms 181, and is sprayed onto the filter net 171 through the backwash nozzles. From the inside to the outside, the filter net 171 is cleaned in the reverse direction. The pollutants attached to the outer surface of the filter net 171 are separated from the filter net 171, enabling the filter net to have better water permeability. The filter net rotates driven by the motor, enabling the entire filter net to be cleaned.

[0075] As mentioned above, in some embodiments of the present utility model, the water cup 11 includes a filtration cavity 106. When the circulating water pump works, it sucks water into the pump cavity. A low-pressure area is formed at the inlet channel of the circulation pump 161, and the water collection cavity 101 (or the aforementioned filtration cavity 106) is a relatively high-pressure area. The pollutants outside the filter net flow towards the filtration cavity along with the water flow. The residue collection function is achieved, separating the pollutants from the circulating water. Therefore, the water for cleaning tableware is always clean water, avoiding secondary pollution of the tableware.

[0076] During the cleaning process, the water that has passed through the primary filtration enters the filtration chamber 106, where the residues gather and are separated from the main circulating water, achieving the separation of residues and water. To solve the problem of residue clogging the filter screen 171, blades are provided at the bottom of the filter screen 171, and the filter screen 171 is driven to rotate by a motor. The blades drive the water flow to scour the surface of the filter screen, separating the residues from the surface of the filter screen. During drainage, the filter screen 171 rotates, and the impeller agitates the water movement in the filtration chamber 106, causing the residues to move in a mixed state with the water, and the residues are discharged through the slag discharge port of the filtration chamber 106. The centrifugal module mainly realizes the functions of residue collection and slag-water separation.

[0077] Optionally, the filtration assembly 10 may further include at least one of the filtration chamber 106, the filter screen 171, the filtration chamber cover 175, the first shaft, the first gear 141, the third gear 143, the bearing, the oil seal, the sealing ring, the driving member 13, etc. Among them, the driving member 13 can be in transmission connection with the first gear 141, the first gear 141 is in transmission connection with the third gear 143, the third gear 143 is in transmission connection with the first shaft, and the first shaft is in transmission connection with the filter screen 171, so as to transmit the rotational drive of the driving member 13 to the filter screen 171. In addition, the first shaft passes through the filtration chamber 106 and is connected to the transmission assembly at its end. The end of the first shaft can pass through the bottom wall of the filtration chamber 106, and structures such as an oil seal, a sealing ring, and a bearing can be provided between the first shaft and the bottom wall of the filtration chamber 106.

[0078] The filtration chamber 106 is provided with a filter screen 171, a backwash spray arm 181, backwash spray nozzles, a vent port, a first shaft, a bearing, an oil seal, and a filtration chamber cover 175, etc. Outside the filtration chamber 106, there are a driving member 13, a first gear 141, and a third gear 143. In addition, a water inlet flow channel of the circulation pump 161, a backwash flow channel, and a water collection chamber 101 are also provided outside the filtration chamber 106. The cleaning module of the filter screen 171 mainly realizes the functions of micro-filtration of the circulating water and backwashing the filter screen. The filter screen rotates driven by a motor, and the blades push the water towards the surface of the filter screen, scouring the surface of the filter screen and separating the residues from the filter screen.

[0079] The water cup 11 of the present utility model may include a water collection chamber 101 and a filtration chamber 106. In addition, the water cup 11 may further include a slag collection chamber, a drainage chamber, a diversion chamber, etc. The slag collection chamber can be communicated with the filtration chamber 106, and a part of the washing water in the filtration chamber will be sent to the slag collection chamber. The slag collection chamber is communicated with the water collection chamber 101 through a slag discharge port, and a one-way valve is provided at the slag discharge port. During cleaning, the one-way valve is closed, separating the water collection chamber 101 from the slag collection chamber; during drainage, the one-way valve is opened, communicating the water collection chamber 101 with the slag collection chamber. The water cup 11 mainly realizes functions such as return water collection, slag collection, spray arm flow channel switching, and drainage and slag discharge.

[0080] The aforementioned one-way valve may include a cover plate, a rubber cover, a bracket, a sealing ring, etc., and mainly realizes the opening and closing functions of the slag discharge port. The bracket can be used as a support, assembled with the slag discharge port and sealed through a sealing ring. The bracket can be provided with an opening. The rubber cover can be connected to the bracket and set to be rotatable for opening and closing the opening. A cover plate is provided on the part of the rubber cover opposite to the opening to provide support for the rubber cover to improve the sealing effect when the rubber cover closes the opening.

[0081] A flow channel plate 111 is provided at the bottom of the water cup 11. The flow channel plate 111 can integrate a backwash spray arm 181, a backwash flow channel, an inlet flow channel of a circulation pump 161, a filter cavity outlet 173, and a gear cavity. It mainly realizes the functions of backwashing the filter screen and circulating water flowing back into the circulation pump 161.

[0082] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0083] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0084] In the present invention, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0085] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0086] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0087] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A filtering component for a dishwasher, characterized in that The filtering component includes: A water cup, which is provided with a water collecting cavity and a filtering cavity communicating with the water collecting cavity, and the water collecting cavity is used for collecting washing water; A filter net, which is arranged in the filtering cavity and is used for separating residues and water in the washing water; A circulation pump, which is used for pumping the water separated from the washing water; A drainage pump, which is used for discharging the residues separated from the washing water.

2. The filtering component according to claim 1, wherein The filtering component further includes a flushing device, which is configured to flush the filter net.

3. The filtering component according to claim 2, wherein The flushing device is arranged downstream or upstream of the filter net and has a nozzle for spraying water towards the filter net.

4. The filtering component according to claim 3, characterized in that, The filter net is configured as a cylinder, and the flushing device includes at least one backflushing spray arm arranged inside the filter net, and the nozzle is arranged on the backflushing spray arm.

5. The filtering component according to claim 4, wherein The backflushing spray arm is configured to extend along the axial direction of the filter net and deviate from the central axis of the filter net, and the water spraying range of the nozzles of the at least one backflushing spray arm covers the filter net along the axial direction of the filter net.

6. The filtering component according to claim 2, wherein The flushing device communicates with the outlet of the circulation pump; and / or, the water cup is provided with a water distribution structure for connecting the spray arm, the outlet of the circulation pump communicates with the water distribution structure, the circulation pump is connected with a flushing branch, one end of the flushing branch communicates with the outlet, and the other end communicates with the flushing device.

7. The filtering component according to any one of claims 1-6, characterized in that, The filter net is rotatably arranged in the filtering cavity.

8. The filter assembly according to claim 5, wherein The filter net is configured to rotate freely; or, the filtering component further includes a driving member, the driving member is in transmission connection with the filter net, and the driving member is used for driving the filter net to rotate.

9. The filtering component according to any one of claims 1-6, characterized in that The filtering component further includes a flow disturbing member in the filtering cavity, which is arranged in the filtering cavity and is used for agitating the washing water in the filtering cavity.

10. The filter assembly according to claim 9, wherein, The flow disturbing member in the filtering cavity is rotatably arranged in the filtering cavity; or, the flow disturbing member in the filtering cavity includes a plurality of blades distributed at intervals in the circumferential direction; or, the flow disturbing member in the filtering cavity is relatively stationary with the filter net or relatively stationary with the filtering cavity; or, the flow disturbing member in the filtering cavity is connected to the lower end of the filter net and is distributed along the direction surrounding the filter net.

11. The filtering component according to any one of claims 1-6, characterized in that, The filter net is configured as a cylinder, the peripheral wall of the filter net is used for filtering the washing water, the circulation pump communicates with the inside of the filter net, and the outer space of the filter net communicates with the water collecting cavity and the drainage pump; and / or, the water collecting cavity and the filtering cavity are arranged side by side, and the peripheral wall of the filtering cavity is provided with a filtering cavity inlet communicating with the water collecting cavity; and / or, the peripheral wall of the filtering cavity is provided with a vent hole, and the vent hole is arranged on the upper side of the peripheral wall of the filtering cavity and communicates with the external space of the water cup for balancing the internal and external air pressures of the filtering cavity; and / or, the mesh aperture of the filter net is configured to be not less than 0.1 mm and not more than 1 mm; or, the mesh aperture of the filter net is configured to be not less than 0.6 mm and not more than 1 mm.

12. The filter component according to claim 1, characterized in that, The water collecting cavity and the filtering cavity extend in the up and down direction and penetrate through the top surface of the water cup. The upper end opening of the water collecting cavity constructs a water inlet, and the upper end of the filtering cavity is provided with a filtering cavity cover for closing the filtering cavity.

13. The filter assembly according to claim 12, wherein The filter net is positioned on the filtering cavity cover; and / or, the filtering cavity cover is detachably connected to the water cup.

14. The filter assembly according to claim 1, characterized in that, The filter assembly further includes: A flat filter screen having an opening, and the flat filter screen is arranged to slope downward from the periphery to the opening, and the upper end of the water collection chamber is open and opposite to the opening; A filter cup, which is inserted through the opening and the water collection chamber.

15. A dishwasher, characterized in that, Comprising the filter assembly according to any one of claims 1-14.

Images