Residue collecting and filtering system, and dishwasher

Abstract

A residue collecting and filtering system (10), and a dishwasher. The residue collecting and filtering system (10) comprises: a filtering chamber (102), provided with a first inlet (1021) and a first outlet (1022), and provided with a first filter screen (163) for filtering washing water flowing from the first inlet (1021) to the first outlet (1022); and a residue collecting chamber (103), provided with a second inlet (1031) and a second outlet (1032), the second inlet (1031) being in communication with the filtering chamber (102), and the residue collecting chamber (103) being provided with a second filter screen (164) for filtering washing water flowing from the second inlet (1031) to the second outlet (1032). The residue collecting and filtering system (10) further comprises a driving structure, which is transmittingly connected to the first filter screen (163) and the second filter screen (164), and is used for driving the first filter screen (163) and the second filter screen (164) to rotate.

Description

Sludge collecting and filtering system and dishwasher

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 202411311386.8, filed on September 19, 2024, with the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of dishwashers, in particular to a sludge collecting and filtering system and a dishwasher. BACKGROUND

[0004] The dishwasher applies internal circulating water for jet washing, so as to reduce water consumption. During the dishwashing process, food residues enter the water, and are filtered through the filter screen. As the food residues accumulate, the holes on the filter screen are gradually blocked by large particles, the water inlet amount of the water pump gradually decreases, the water jet intensity of the dishwashing is affected, and the tableware cannot be washed clean. In order to ensure the dishwashing effect of the dishwasher, the user must clean the filter screen regularly.

[0005] In the existing internal circulation system, the residues are always flushed by the circulating water, and small particles of residues can enter the cleaning water and be brought to the tableware, causing secondary pollution of the tableware. In order to ensure the dishwashing effect of the dishwasher, the following solutions are usually used: 1) increasing the filter screen area to reduce the frequency of cleaning the filter screen by the user; 2) using a scraper to clean the side where the residues accumulate on the filter screen.

[0006] However, increasing the filter screen area increases the cost of the filter screen; when the scraper is used for cleaning, the residues are squeezed and enter the water pump through the filter screen, causing secondary pollution, affecting the cleaning effect, affecting 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 the residues are difficult to discharge.

[0007] SUMMARY

[0008] One object of the present application is to provide a sludge collecting and filtering system and a dishwasher.

[0009] The sludge collecting and filtering system according to the embodiments of the present application is used in a dishwasher, and includes a filter cavity having a first inlet and a first outlet, a first filter screen provided in the filter cavity for filtering washing water flowing from the first inlet to the first outlet; a sludge collecting cavity having a second inlet and a second outlet, the second inlet being communicated with the filter cavity, a second filter screen provided in the sludge collecting cavity for filtering washing water flowing from the second inlet to the second outlet, wherein the sludge collecting and filtering system further includes a driving structure in transmission connection with the first filter screen and the second filter screen, for driving the first filter screen and the second filter screen to rotate.

[0010] According to the slag collecting and filtering system, the washing water can be filtered through the filtering cavity, and the slag can be collected through the slag collecting cavity, so that the filtering effect of the slag collecting and filtering system is improved, and the slag is conveniently discharged.

[0011] In addition, the slag collecting and filtering system according to the above-mentioned embodiments of the application can further have the following additional technical features:

[0012] In some embodiments, at least a part of the first filter screen is at a distance R1 from the rotating shaft, and the rotating speed of the first filter screen is ω1; at least a part of the second filter screen is at a distance R2 from the rotating shaft, and the rotating speed of the second filter screen is ω2, wherein ω2 / ω1≥sqrt(R1 / R2).

[0013] In some embodiments, the filtering cavity is further provided with a flushing device for flushing the first filter screen, and ω2 / ω1≥1.1×sqrt(R1 / R2).

[0014] In some embodiments, the first filter screen is in a cylindrical shape, and the radius of the first filter screen is R1; the second filter screen is in a cylindrical shape, and the radius of the second filter screen is R2.

[0015] In some embodiments, the radius R1 of the first filter screen is greater than the radius R2 of the second filter screen.

[0016] In some embodiments, the filter screen area of the first filter screen is greater than the filter screen area of the second filter screen; and / or, the inner bottom surface of the slag collecting cavity is provided with a boss, and the second filter screen is arranged on the boss.

[0017] In some embodiments, the driving structure comprises a driving member and a transmission assembly, the driving member is in transmission connection with the transmission assembly, the transmission assembly is in transmission connection with the first filter screen and the second filter screen, for transmitting the rotating motion of the driving shaft of the driving member to the first filter screen and the second filter screen, and the first filter screen and the second filter screen are in transmission cooperation.

[0018] In some embodiments, the transmission assembly comprises a first gear, a second gear and a third gear, the first gear, the second gear and the third gear are in transmission connection, the first gear is in transmission connection with the driving shaft of the driving member, the second gear is in transmission connection with the first filter screen, and the third gear is in transmission connection with the second filter screen.

[0019] In some embodiments, the driving structure further comprises a first shaft, the first shaft being drivingly connected to the first filter screen and the first gear, the first gear being arranged on a bottom wall of the filtering cavity, the first shaft penetrating the bottom wall of the filtering cavity and being provided with a sealing structure; and / or, the driving structure further comprises a second shaft, the second shaft being drivingly connected to the second filter screen and the second gear, the second gear being arranged on a bottom wall of the slag collecting cavity, the second shaft penetrating the bottom wall of the slag collecting cavity and being provided with a sealing structure.

[0020] In some embodiments, the filtering cavity is provided with a vent hole, the vent hole being communicated with an external space of the slag collecting and filtering system for balancing the air pressure inside and outside the filtering cavity; and / or, the slag collecting cavity is closed at positions other than the second inlet and the second outlet during filtering of the slag collecting and filtering system.

[0021] In some embodiments, the slag collecting cavity is further provided with a slag discharging port, the slag collecting and filtering system further comprises a water pump and a one-way valve, the one-way valve being used for opening and closing the slag discharging port, the water pump being communicated with the slag discharging port when the one-way valve is opened.

[0022] In some embodiments, the slag collecting and filtering system comprises a water cup, the water cup comprising a cup body and a flow channel plate, the flow channel plate being arranged below the cup body, the first outlet and the second outlet being arranged on the flow channel plate.

[0023] In some embodiments, an upper end of the filtering cavity is provided with a filtering cavity cover, an upper end of the first filter screen being rotatably connected to the filtering cavity cover and a lower end of the first filter screen being rotatably connected to the flow channel plate; and / or, an upper end of the slag collecting cavity is provided with a slag collecting cavity cover, an upper end of the second filter screen being rotatably connected to the slag collecting cavity cover and a lower end of the second filter screen being rotatably connected to the flow channel plate.

[0024] In some embodiments, the slag collecting and filtering system further comprises a water collecting cavity, the water collecting cavity being used for collecting washing water, the first inlet being communicated with the water collecting cavity.

[0025] A dishwasher according to embodiments of the present application comprises the aforementioned slag collecting and filtering system. BRIEF DESCRIPTION OF DRAWINGS

[0026] FIG. 1 is a schematic view of a slag collecting and filtering system according to an embodiment of the present application.

[0027] FIG. 2 is a schematic view of a slag collecting and filtering system according to an embodiment of the present application.

[0028] FIG. 3 is a sectional view of a slag collecting and filtering system according to an embodiment of the present application.

[0029] FIG. 4 is a sectional view of a slag collecting and filtering system according to an embodiment of the present application.

[0030] Fig. 5 is a sectional view of a slag collecting and filtering system according to an embodiment of the present application.

[0031] Fig. 6 is a sectional view of a slag collecting and filtering system according to an embodiment of the present application.

[0032] Fig. 7 is a schematic view of a slag collecting and filtering system according to an embodiment of the present application.

[0033] Fig. 8 is an exploded schematic view of a slag collecting and filtering system according to an embodiment of the present application.

[0034] Fig. 9 is an exploded schematic view of a slag collecting and filtering system according to an embodiment of the present application.

[0035] Fig. 10 is a schematic view of a water cup according to an embodiment of the present application.

[0036] Fig. 10 is a schematic view of a water cup according to an embodiment of the present application. DETAILED DESCRIPTION

[0037] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals are used throughout the drawings to refer to the same or like elements or elements with the same or similar functionality. The embodiments described below are exemplary and are intended to be illustrative of the present application and are not to be construed as limiting thereof.

[0038] As shown in FIGS. 1-10, the slag collection and filtration system 10 according to the embodiments of the present application is used in a dishwasher, and includes a filtration chamber 102 and a slag collection chamber 103. The filtration chamber 102 has a first inlet 1021 for washing water to flow in, and a first outlet 1022. The filtration chamber 102 is configured to separate the washing water and the residue. The filtration chamber 102 is provided with a first filter screen 163 for filtering the washing water flowing from the first inlet 1021 to the first outlet 1022. The slag collection chamber 103 has a second inlet 1031 connected to the filtration chamber 102, and a second outlet 1032. The slag collection chamber 103 is provided with a second filter screen 164 for filtering the washing water flowing from the second inlet 1031 to the second outlet 1032. The slag collection chamber 103 is configured to collect the residue separated by the filtration chamber 102.

[0039] Specifically, during the operation of the dishwasher, the circulating pump 12 can drive the washing water to flow from the slag collection and filtration system 10 to the spray arm and other components for cleaning the tableware, so as to clean the tableware and the like by the washing water. Then, the washing water flows into the slag collection and filtration system 10. Then, the washing water flows into the filtration chamber 102, and the washing water in the filtration chamber 102 is subjected to slag-water separation. Most of the separated water flows into the circulating pump 12 and is pumped to the spray arm and other components for cleaning the tableware by the circulating pump 12. The separated residue flows into the slag collection chamber 103.

[0040] According to the slag collection and filtration system 10 of the embodiments of the present application, the washing water can be filtered by the filtration chamber 102, and the residue can be collected by the slag collection chamber 103. The residue can be stored in the slag collection chamber 103, so as to facilitate the collection of the residue during the washing process, and avoid the residue affecting the slag-water separation of the washing water in the filtration chamber 102, thereby improving the filtration effect of the slag collection and filtration system 10. In addition, after the residue is collected by the slag collection chamber 103, the residue can be discharged by manual or automatic mode. Since the residue is relatively concentrated, the residue can be conveniently discharged.

[0041] In addition, as shown in FIG. 3, the slag collection and filtration system 10 further comprises a circulating pump 12, a first flow channel is arranged between the inlet of the circulating pump 12 and the first outlet 1022, and a second flow channel is arranged between the inlet of the circulating pump 12 and the second outlet 1032. Wherein, after the washing water enters the slag collection and filtration system 10, part of the washing water is discharged from the filtration cavity 102 through the first outlet 1022, and part of the washing water is discharged from the slag collection cavity 103 through the second outlet 1032. In addition, the circulating pump 12 drives the washing water at the first outlet 1022 to the circulating pump 12 through the first flow channel, and drives the washing water at the second outlet 1032 to the circulating pump 12 through the second flow channel, so as to collect the washing water to the circulating pump 12, thereby facilitating the washing water demand of the dishwasher. Wherein, the flow resistance from the filtration cavity 102 to the circulating pump 12 is different from the flow resistance from the slag collection cavity 103 to the circulating pump 12, so that the fluid can more easily enter the circulating pump 12 from the filtration cavity 102. In this way, the washing water entering the slag collection and filtration system 10 will be separated from the slag in the filtration cavity 102, and the residues will be collected in the slag collection cavity 103, thereby avoiding a large amount of washing water entering the slag collection cavity 103, reducing the fluid flow in the slag collection cavity 103, and facilitating slag collection.

[0042] Optionally, the slag collection and filtration system 10 further comprises a driving structure, which is in transmission connection with the first filter screen 163 and the second filter screen 164, and is used for driving the first filter screen 163 and the second filter screen 164 to rotate.

[0043] According to the slag collection and filtration system 10 of the embodiments of the present application, the driving structure is used to drive the first filter screen 163 and the second filter screen 164 to rotate, so as to facilitate the surface cleaning of the first filter screen 163 and the second filter screen 164, avoid blockage, improve the operation stability of the slag collection and filtration system 10, and prolong the cleaning period.

[0044] In some embodiments, the distance between at least part of the first filter screen 163 and the rotating shaft is R1, and the rotating speed of the first filter screen 163 is ω1; the distance between at least part of the second filter screen 164 and the rotating shaft is R2, and the rotating speed of the second filter screen 164 is ω2, wherein ω2 / ω1≥sqrt(R1 / R2). The centrifugal force of the at least part of the first filter screen 163 is F1=ω1^2×R1, and the centrifugal force of the at least part of the second filter screen 164 is F2=ω2^2×R2. By limiting ω2 / ω1≥sqrt(R1 / R2), the centrifugal forces of the first filter screen 163 and the second filter screen 164 can be conveniently maintained, so as to drive the contaminants in the washing water away from the first filter screen 163 and the second filter screen 164, and prevent the first filter screen 163 and the second filter screen 164 from being blocked.

[0045] Optionally, ω2 / ω1 can be set as sqrt(R1 / R2), 1.1×sqrt(R1 / R2), 2.1×sqrt(R1 / R2), or 2.4×sqrt(R1 / R2), etc.

[0046] Further, the filtering cavity 102 is also provided with a flushing device 1124 for flushing the first filter screen 163, ω2 / ω1≥1.1×sqrt(R1 / R2). Since the filtering cavity 102 is provided with the flushing device 1124, the rotating speed of the second filter screen 164 of the slag collecting cavity 103 should be higher to ensure no blockage under the same centrifugal force, and therefore, through the limitation, the first filter screen 163 and the second filter screen can be further prevented from being blocked.

[0047] In some embodiments, as shown in FIGS. 3-6, the first filter screen 163 is provided in a cylindrical shape, and the peripheral wall of the first filter screen 163 is used for filtering the washing water. The filtering area of the first filter screen 163 can be increased, and the first filter screen 163 is rotatably arranged around the axis of the first filter screen 163 in the filtering cavity 102, and the inner space of the first filter screen 163 is opposite to the first outlet 1022. As shown in FIGS. 3-6, the second filter screen 164 can be provided in a cylindrical shape, and the peripheral wall of the second filter screen 164 is used for filtering, and the inner space of the second filter screen 164 is communicated with the second outlet 1032, and the outer space of the second filter screen 164 is communicated with the second inlet 1031 and the slag discharge port 1033. The filtering area of the second filter screen 164 can be increased, and the second filter screen 164 is rotatably arranged around the axis of the second filter screen 164 in the slag collecting cavity 103, and the inner space of the second filter screen 164 is opposite to the second outlet 1032. In combination with the foregoing embodiments, the radius of the first filter screen 163 is R1, and the radius of the second filter screen 164 is R2. Optionally, the radius R1 of the first filter screen 163 is greater than the radius R2 of the second filter screen 164. The filtering effect of the first filter screen 163 can be improved, and the slag collecting cavity 103 can be facilitated to collect the residue.

[0048] As shown in FIGS. 4, 8 and 9, in some embodiments, the filter screen area of the first filter screen 163 is greater than the filter screen area of the second filter screen 164, and the first filter screen 163 has a larger area for filtering, so that the filtering flow of the first filter screen 163 can be improved, so that most of the washing water is discharged after being filtered by the first filter screen 163, and only a small part of the washing water enters the slag collecting cavity 103, so that the residue can be conveniently accumulated in the slag collecting cavity 103, and the backflow of the fluid in the slag collecting cavity 103 can be avoided. In addition, the inner bottom surface of the slag collecting cavity 103 can be provided with a boss, and the second filter screen 164 is arranged on the boss. The possibility of the second filter screen 164 being blocked can be reduced.

[0049] In some embodiments, as shown in FIG. 4 and FIG. 7, the driving structure comprises a driving member 14 and a transmission assembly 15, the driving member 14 is in transmission connection with the transmission assembly 15, the transmission assembly 15 is in transmission connection with the first filter screen 163 and the second filter screen 164, for transmitting the rotating motion of the driving shaft of the driving member 14 to the first filter screen 163 and the second filter screen 164, and the first filter screen 163 and the second filter screen 164 are in transmission cooperation. The first filter screen 163 and the second filter screen 164 can be conveniently linked to facilitate the driving structure to drive the first filter screen 163 and the second filter screen 164 to rotate, and in addition, the rotational speed ratio of the first filter screen 163 and the second filter screen 164 can be conveniently limited to avoid the first filter screen 163 or the second filter screen 164 from being blocked. Of course, the first filter screen and the second filter screen 164 in the present application can also be respectively independently driven.

[0050] In some embodiments, the transmission assembly 15 comprises a first gear 151, a second gear 152 and a third gear 153, the first gear 151, the second gear 152 and the third gear 153 are in transmission connection, the first gear 151 is in transmission connection with the driving shaft of the driving member 14, the second gear 152 is in transmission connection with the first filter screen 163, and the third gear 153 is in transmission connection with the second filter screen 164. Thus, the power from the driving member 14 to the first filter screen 163 and the second filter screen 164 can be conveniently transmitted, and the stability of the driving structure can be improved.

[0051] Optionally, as shown in FIG. 8, the driving structure further comprises a first shaft 154, the first shaft 154 is in transmission connection with the first filter screen 163 and the first gear 151, the first gear 151 is arranged on the bottom wall of the filter cavity 102, the first shaft 154 penetrates the bottom wall of the filter cavity 102 and is provided with a sealing structure. The upper end of the first filter screen 163 can be provided with a first mounting hole, the upper end of the first shaft 154 penetrates the first mounting hole, and the first shaft 154 and the first mounting hole can be in key cooperation or the like, so as to drive the first filter screen 163 to rotate by using the first shaft 154, and the lower end of the first shaft 154 is connected with the second gear 152. The lower end of the first shaft 154 penetrates the bottom wall of the filter cavity 102 and is provided with a bearing and an oil seal.

[0052] Optionally, as shown in FIG. 9, the driving structure further comprises a second shaft 155, the second shaft 155 is drivingly connected with the second filter screen 164 and a second gear 152 provided on the bottom wall of the slag collecting cavity 103, the second shaft 155 penetrates the bottom wall of the slag collecting cavity 103 and is provided with a sealing structure. The upper end of the second filter screen 164 can be provided with a second mounting hole, the upper end of the second shaft 155 penetrates the second mounting hole, and the second shaft 155 and the second mounting hole can be provided with a key fit or the like, so as to drive the second filter screen 164 to rotate by the second shaft 155, and the lower end of the second shaft 155 is connected with the second gear 152. The lower end of the second shaft 155 penetrates the bottom wall of the filtering cavity 102 and is provided with a bearing and an oil seal. In addition, the bottom of the slag filtering system 10 in the present application is provided with a flow channel plate 112, and the flow channel plate 112 can be further provided with a transmission cavity 1123, and the transmission cavity 1123 is provided with a transmission assembly 15,

[0053] Optionally, as shown in FIG. 3, the slag filtering system 10 further comprises a first flow disturbing member 1631 provided in the filtering cavity 102 and used for agitating the washing water in the filtering cavity 102, the first flow disturbing member 1631 can be connected with the lower end of the first filter screen 163 and comprises a plurality of first blades distributed along the circumference of the first filter screen 163. As shown in FIG. 3 and FIG. 9, the slag filtering system 10 further comprises a second flow disturbing member 1641 provided in the slag collecting cavity 103 and used for agitating the water and the residue in the slag collecting cavity 103, the second flow disturbing member 1641 can be connected with the lower end of the second filter screen 164 and comprises a plurality of second blades distributed along the circumference of the second filter screen 164.

[0054] In some embodiments, the filter screen aperture of the first filter screen 163 is not less than 0.1 mm and not more than 1 mm. When the first filter screen 163 is rotatable and the rotating speed is relatively high (for example, greater than 1000 rpm), the filter screen aperture of the first filter screen 163 can be appropriately enlarged. Optionally, the filter screen aperture of the first filter screen 163 is not less than 0.6 mm and not more than 1 mm. For example, the filter screen aperture of the first filter screen 163 can be 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 rotating speed of the first filter screen 163 is relatively low (for example, not more than 1000 rpm), the filter screen aperture of the first filter screen 163 can be appropriately reduced.

[0055] In some embodiments, the second filter screen 164 has a screen aperture size of not less than 0.1 mm and not more than 1 mm. When the second filter screen 164 is rotatable and has a high rotation speed (e.g., greater than 1000 rpm), the screen aperture size of the second filter screen 164 can be appropriately enlarged. Alternatively, the second filter screen 164 has a screen aperture size of not less than 0.6 mm and not more than 1 mm. For example, the second filter screen 164 can have a screen aperture size of 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 second filter screen 164 has a low rotation speed (e.g., not greater than 1000 rpm), the screen aperture size of the second filter screen 164 can be appropriately reduced.

[0056] In some embodiments, the filter cavity 102 is provided with a vent hole communicating with the outside space of the slag collecting and filtering system 10 for balancing the air pressure inside and outside the filter cavity 102; and / or, the slag collecting cavity 103 is closed at other positions than the second inlet 1031 and the second outlet 1032 during the filtering of the slag collecting and filtering system 10. Alternatively, the water collecting cavity 101 and the filter cavity 102 are further provided with a vent hole 1023. The vent hole 1023 communicates with the outside space of the slag collecting and filtering system 10 for balancing the air pressure inside and outside the filter cavity 102, wherein the vent hole 1023 can be arranged at the upper end of the circumferential wall of the filter cavity 102. This can facilitate the washing water to be discharged into the filter cavity 102, and facilitate the washing water to be filtered by the slag collecting and filtering system 10, thereby effectively improving the filtering efficiency and effect. In addition, the vent hole 1023 is higher than the first inlet 1021 and / or the vent hole 1023 is not lower than the second inlet 1031, which can reduce the possibility of the vent hole 1023 being blocked. In addition, the slag collecting cavity 103 is closed at other positions than the second inlet 1031 and the second outlet 1032 during the filtering of the slag collecting and filtering system 10, which can facilitate the formation of a relatively high pressure environment in the slag collecting cavity 103, so as to reduce the water entering the slag collecting cavity 103, and can achieve the retention of the residues in the slag collecting cavity 103, thereby improving the filtering efficiency and effect of the slag collecting and filtering system 10.

[0057] In some embodiments, the slag collecting cavity 103 can further comprise a slag discharge port 1033, and the slag collecting and filtering system 10 can further comprise a water pump 13 connected to the slag discharge port 1033. Optionally, the slag collecting and filtering system 10 can further comprise a one-way valve 17 configured to open and close the slag discharge port 1033, and the water pump 13 is connected to the slag discharge port 1033 when the one-way valve 17 is open. The one-way valve 17 can comprise a cover plate, a rubber cap, a support, and a third sealing ring, etc., and mainly serves to open and close the slag discharge port 1033. The support can serve as a support and is assembled with the slag discharge port 1033 and sealed by the sealing ring. The support can be provided with an opening, and the rubber cap can be connected to the support and configured to be rotatable to open and close the opening. The rubber cap opposite to the opening is provided with a cover plate to provide support for the rubber cap, so as to improve the sealing effect when the rubber cap closes the opening. The one-way valve 17 is configured to open and close the slag discharge port 1033. The inner bottom surface of the slag collecting cavity 103 can be provided as an inclined surface gradually inclined downward in the direction from the filtering cavity 102 to the slag discharge port 1033. The lower end of the second filter screen 164 can be provided higher than the inner bottom surface of the slag collecting cavity 103, so that the residue remaining in the slag collecting cavity 103 can be prevented from adhering to the surface of the second filter screen 164, and the filtering performance of the second filter screen 164 can be improved. The inner bottom surface of the slag collecting cavity 103 is provided with a boss, the second outlet 1032 is arranged on the top surface of the boss, and the second filter screen 164 is arranged on the boss.

[0058] In some embodiments, the slag collecting and filtering system 10 can comprise a water cup 11, which can comprise a water collecting cavity 101, a filtering cavity 102, a slag collecting cavity 103, a water discharging cavity 104, and a shunt cavity, etc., so as to improve the integration of the slag collecting and filtering system 10, simplify the slag collecting and filtering system 10, and improve the stability of the dishwasher. Of course, the water collecting cavity 101, the filtering cavity 102, and the slag collecting cavity 103, etc. in the present application can also be provided as a split structure. Optionally, the water cup 11 can comprise a cup body 111 and a flow channel plate 112, the flow channel plate 112 covers the lower portion of the cup body 111, the first outlet 1022 and the second outlet 1032 are arranged on the flow channel plate 112, and at least a portion of the first flow channel and / or at least a portion of the second flow channel are arranged on the flow channel plate 112. The integration of the slag collecting and filtering system 10 can be improved, the structure can be simplified, the water circuit can be optimized, and the connection between the circulating pump 12 and the slag collecting cavity 103 and the filtering cavity 102 can be facilitated.

[0059] In some embodiments, the flow channel plate 112 can serve as the bottom wall of the filtering cavity 102 and the slag collecting cavity 103, and the flow channel plate 112 is further provided with a flushing flow channel connected to the flushing device 1124 and configured to connect the circulating pump 12. The flow channel plate 112 is further provided with a transmission cavity 1123, and the transmission assembly 15 is arranged in the transmission cavity 1123.

[0060] In some embodiments, the flow channel plate 112 is further provided with a pump interface for connecting the circulating pump 12, the first flow channel is connected between the pump interface and the first outlet 1022, and the second flow channel is connected between the pump interface and the second outlet 1032, so as to facilitate the connection of the circulating pump 12, the first outlet 1022 and the second outlet 1032, simplify the flow path, facilitate the assembly and maintenance of the slag collecting and filtering system 10, and the like.

[0061] In some embodiments, the filtering cavity 102 is provided with a first filter screen 163, the first inlet 1021 and the second inlet 1031 are arranged on one side of the first filter screen 163, and the first outlet 1022 is arranged on the other side of the first filter screen 163; the slag collecting cavity 103 is provided with a second filter screen 164, the second inlet 1031 is arranged on one side of the second filter screen 164, and the second outlet 1032 is arranged on the other side of the second filter screen 164.

[0062] Optionally, as shown in FIG. 4 and FIG. 8, the upper end of the filtering cavity 102 is provided with a filtering cavity cover 1632, the first filter screen 163 is rotatably arranged in the filtering cavity 102, the upper end of the first filter screen 163 is rotatably connected with the filtering cavity cover 1632, and the lower end is rotatably connected with the flow channel plate 112. The first filter screen 163 can be arranged to rotate freely, that is, the first filter screen 163 can be arranged to rotate under the driving action of water flow; in addition, the first filter screen 163 can also be arranged to rotate under the driving of the driving member 14. The circumferential surface of the filtering cavity cover 1632 is provided with a first groove portion, a first sealing ring 1633 is arranged along the circumference of the filtering cavity cover 1632 and is matched with the first groove portion, the first sealing ring 1633 seals the gap between the filtering cavity cover 1632 and the inner circumferential surface of the filtering cavity 102, in addition, the filtering cavity cover 1632 is further provided with a bearing, the upper end of the first filter screen 163 is connected with the bearing, and the bearing is used to realize the rotational connection between the first filter screen 163 and the filtering cavity cover 1632. The upper end of the first filter screen 163 is rotatably connected with the filtering cavity cover 1632.

[0063] Optionally, as shown in FIG. 4 and FIG. 9, the upper end of the slag collecting cavity 103 is provided with a slag collecting cavity cover 1642, and a second filter screen 164 is rotatably arranged in the slag collecting cavity 103. The upper end of the second filter screen 164 is rotatably connected to the slag collecting cavity cover 1642, and the lower end is rotatably connected to the flow channel plate 112. The second filter screen 164 can be arranged to rotate freely, that is, the second filter screen 164 can be arranged to rotate under the driving action of water flow; in addition, the second filter screen 164 can also be arranged to rotate under the driving of the driving member 14. The peripheral surface of the slag collecting cavity cover 1642 is provided with a second groove portion, and a second sealing ring 1643 is arranged along the circumference of the slag collecting cavity cover 1642 and cooperates with the groove portion. The second sealing ring 1643 seals the gap between the slag collecting cavity cover 1642 and the inner peripheral surface of the slag collecting cavity 103. In addition, the slag collecting cavity cover 1642 is also provided with a bearing, and the upper end of the second filter screen 164 is connected to the bearing. The bearing realizes the rotational connection between the second filter screen 164 and the slag collecting cavity cover 1642. The upper end of the second filter screen 164 is rotatably connected to the slag collecting cavity cover 1642, and the lower end of the second filter screen 164 is rotatably connected to the bottom wall of the slag collecting cavity 103. The upper end of the second filter screen 164 is rotatably connected to the slag collecting cavity cover 1642.

[0064] Optionally, as shown in FIG. 4, the flow channel plate 112 is provided with a flushing device 1124 which extends into the filtering cavity 102 for flushing the first filter screen 163. The flow channel plate 112 is also provided with a backflush flow channel 1122 which is communicated with the flushing device 1124 and is configured to be communicated with the outlet of the washing circulating pump 12. The flushing device 1124 is arranged to spray water towards the first filter screen 163 to flush the first filter screen 163. The flushing device 1124 can be arranged downstream of the first filter screen 163 and spray water towards the first filter screen 163. The first filter screen 163 can be arranged in a cylindrical shape, and the peripheral wall of the first filter screen 163 is used to separate the residues in the washing water and the water. The inner side space of the first filter screen 163 is communicated with the first outlet 1022, and the outer side space of the first filter screen 163 is communicated with the first inlet 1021 and the second inlet 1031.

[0065] The flushing device 1124 can include at least one backflushing spray arm arranged inside the first filter screen 163 and spraying water towards the peripheral wall of the first filter screen 163. The backflushing spray arm is arranged to extend along the axis of the first filter screen 163 and deviate from the central axis of the first filter screen 163. The spray range of the spray opening of the at least one backflushing spray arm covers the first filter screen 163 along the axis of the first filter screen 163, that is, the flushing area of the backflushing spray arm can cover the entire first filter screen 163 along the axis. Alternatively, the backflushing spray arm can include a plurality of backflushing spray arms, which can be distributed along the periphery of the first filter screen 163. The flushing device 1124 is connected to the outlet of the circulating pump 12, and the slag collecting and filtering system 10 is provided with a water distribution valve 1111 for connecting the spray arm. The outlet of the circulating pump 12 is connected to the water distribution valve 1111, and the circulating pump 12 is connected to a flushing branch. One end of the flushing branch is connected to the outlet, and the other end is connected to the flushing device 1124.

[0066] In some embodiments, the slag collecting and filtering system 10 further includes a water collecting cavity 101 for collecting washing water, and the first inlet 1021 is connected to the water collecting cavity 101. Alternatively, the water collecting cavity 101 and the filtering cavity 102 are arranged side by side, and the first inlet 1021 is arranged between the water collecting cavity 101 and the filtering cavity 102. The filtering cavity 102 and the slag collecting cavity 103 are arranged side by side, and the second inlet 1031 is arranged between the filtering cavity 102 and the slag collecting cavity 103. The second inlet 1031 can be arranged to be higher than the bottom of the filtering cavity 102 and the bottom of the slag collecting cavity 103. Alternatively, the water collecting cavity 101, the filtering cavity 102, and the slag collecting cavity 103 are arranged side by side, the water collecting cavity 101 is adjacent to the filtering cavity 102, the filtering cavity 102 is adjacent to the slag collecting cavity 103, and the slag collecting cavity 103 is adjacent to the water collecting cavity 101. This can facilitate the flow of water and residue, so as to facilitate the filtering of washing water and the collection of residue.

[0067] In addition, the slag collecting and filtering system 10 can include a drainage cavity 104 arranged below the water collecting cavity 101 and connected to the water collecting cavity 101 and the slag discharge port 1033, and the drainage pump 13 is connected to the drainage cavity 104.

[0068] As shown in FIG. 1, FIG. 4 and FIG. 6, in some embodiments, the slag collection and filtration system 10 further comprises a flat filter screen 161 having a mounting opening and being inclined downward from the periphery to the mounting opening, and the upper end of the water collection cavity 101 is provided with a water collection opening opposite to the mounting opening; and a filter cup 162 is provided in the mounting opening and the water collection cavity 101. The filter screens (the first filter screen 163, the second filter screen 164 and the filter cup 162) in the present application can be provided in a detachable structure and can be taken out from the inside of the cleaning cavity, facilitating the later maintenance. The peripheral wall of the filter cup 162 is provided with a first filter part and the bottom wall is provided with a second filter part, the first filter part filters the washing water from the water collection cavity 101 to the filtration cavity 102, and the second filter part filters the washing water from the water collection cavity 101 to the drainage cavity 104. The discharge of the residue can be facilitated. Optionally, the mesh size of the first filter part is larger than that of the second filter part. Optionally, the lower end of the water collection cavity 101 is provided with a positioning part, and the lower end of the filter cup 162 is detachably buckled with the positioning part. The filtration and disassembly of the filter cup 162 are facilitated, so as to facilitate the one-time filtration and the processing of the residue with a large volume.

[0069] The dishwasher according to the embodiments of the present application comprises the aforementioned slag collection and filtration system.

[0070] In combination with FIG. 1 to FIG. 10, the slag collection and filtration system 10 of the present application can comprise a water collection cavity 101, a filtration cavity 102, a slag collection cavity 103, a circulating pump 12, a drainage pump 13 and a water distribution valve 1111 and the like modules. It has a multi-stage filtration function. Among them, the flat filter screen 161, the filter cup 162, the first filter screen 163, the second filter screen 164, the circulating pump 12, the driving part 14, the transmission assembly 15 and the like are mainly used for multi-stage filtration.

[0071] Specifically, the first-stage filtration system comprises the flat filter screen 161 and the filter cup 162. During the cleaning process, after the water washes the surface of the tableware, the water carries the residue to the bottom of the cleaning cavity, flows through the flat filter screen 161 and collects in the water collection cavity 101, and the residue smaller than the aperture size of the flat filter screen 161 (the aperture size of the flat filter screen 161 is 0.5-2 mm) enters the filtration cavity 102. The residue larger than the aperture size of the flat filter screen 161 enters the filter cup 162.

[0072] The filter cup 162 has two apertures, the aperture size of the side surface of the filter cup 162 is small and can be set to 0.5-3 mm. The aperture size of the bottom of the filter cup 162 is large and can be set to 5-10 mm. The residue larger than the aperture of the bottom of the filter cup 162 needs to be cleaned manually. The residue smaller than the aperture of the bottom of the filter cup 162 and larger than the aperture of the side surface is discharged by the drainage pump 13 during the drainage. The residue smaller than the aperture of the side surface of the filter cup 162 enters the filtration cavity 102. The first-stage filtration realizes the filtration of the residue larger than 3 mm.

[0073] The secondary filtering system is composed of the first filter screen 163 and the second filter screen 164. The first filter screen 163 and the second filter screen 164 can have the same or different aperture diameters. The water and the residue entering the filtering cavity 102 are filtered by the first filter screen 163, and the tiny particles smaller than the first filter screen 163 can pass through the filter screen and enter the circulating pump 12 with the water. The residue larger than the first filter screen 163 (with a size of 0.1-3 mm) enters the residue collecting cavity 103. When draining water, the residue in the residue collecting cavity 103 is discharged by the drainage pump 13.

[0074] The first filter screen 163 and the second filter screen 164 of the secondary filtering are driven to rotate by the driving member 14 and the transmission assembly 15. Under the action of the centrifugal force, the residue is separated from the filter screen.

[0075] In the application, the first filter screen 163 and / or the second filter screen 164 can be rotatable and utilize centrifugal separation.

[0076] Specifically, the water filtered by the primary filtering enters the filtering cavity 102, and the first filter screen 163 rotates at high speed under the driving of the driving member 14 (such as a motor). Through the high-speed rotation of the first filter screen 163, the contamination adhered to the outer surface of the first filter screen 163 is separated from the filter screen, so that the first filter screen 163 has better water permeability. The first filter screen 163 is provided with first blades, the rotation of the first blades pushes the water to flush the surface of the first filter screen 163, accelerates the separation of the residue from the filter screen, and makes the filter screen cleaning more thorough. In addition, the first inlet 1021 is arranged on the peripheral surface of the filtering cavity 102, the first outlet 1022 is arranged on the bottom surface of the filtering cavity 102, and the second inlet 1031 is arranged on the peripheral surface of the filtering cavity 102. When the circulating pump 12 works, the water is sucked from the filtering cavity 102 into the pump cavity of the circulating pump 12. A low-pressure area is formed at the first outlet 1022, the outer side of the filter screen of the filtering cavity 102 is a relatively high-pressure area, and the position of the first inlet 1021 is a relatively high-pressure area; a low-pressure area is formed at the second outlet 1032, and the position of the second inlet 1031 is a relatively high-pressure area. Therefore, part of the water enters the second outlet 1032 through the residue collecting cavity 103. The contamination on the outer side of the first filter screen 163 is pushed towards the second inlet 1031 by the water flow, and enters the residue collecting cavity 103 through the second inlet 1031. Since the water flow in the residue collecting cavity 103 is slow, and the second filter screen 164 is arranged at the second outlet 1032, the contamination is collected in the residue collecting cavity 103, the residue collecting function is realized, the contamination is separated from the circulating water, therefore, the water for cleaning tableware is always clean water, and the secondary pollution of the tableware is avoided. In addition, the application also provides a cleaning module for cleaning the first filter screen 163, and the circulating water micro-filtration function and the centrifugal cleaning filter screen function are used to clean the first filter screen 163.

[0077] In addition, during the cleaning process, the water filtered by the first filter enters the slag collection chamber 103 from the second inlet 1031 through the filter chamber 102, and the slag is collected in the slag collection chamber 103 and separated from the main circulating water, so as to realize slag-water separation. In order to solve the problem of slag blocking the second filter screen 164, a second blade is arranged at the bottom of the second filter screen 164. The second filter screen 164 is driven to rotate by the motor, and the water flow driven by the second blade scours the surface of the filter screen, so that the slag is separated from the surface of the filter screen. When draining, the second filter screen 164 rotates, and the second flow disturbing member 1641 agitates the water in the slag collection chamber 103 to make the slag move with the water, and the slag is discharged through the slag discharge port 1033 of the slag collection chamber 103. The slag collection chamber 103 can realize the functions of slag collection and slag-water separation.

[0078] The slag collection and filtration system 10 of the present application can separate the slag from the circulating water, realize clean water cleaning, avoid secondary pollution, automatically clean the filter screen through centrifugal separation, and the filter screen does not need to be maintained by people, can ensure the stability of the water pump output, improve the working efficiency of the water pump, and make the slag more easily discharged after being collected. All filter screens can be easily taken out and maintained.

[0079] In the description of the present application, it should be understood that 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" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0080] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "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 specifically limited.

[0081] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixed", and similar terms should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, 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 this application can be understood according to the specific circumstances.

[0082] In this application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" 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", "under" and "under" 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.

[0083] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 application. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0084] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A slag collecting filter system (10) for a dishwasher, wherein, The slag collecting and filtering system (10) comprises: a filtering cavity (102) having a first inlet (1021) and a first outlet (1022), the filtering cavity (102) being provided with a first filter screen (163) for filtering washing water flowing from the first inlet (1021) to the first outlet (1022); a slag collecting cavity (103) having a second inlet (1031) and a second outlet (1032), the second inlet (1031) being communicated with the filtering cavity (102), the slag collecting cavity (103) being provided with a second filter screen (164) for filtering washing water flowing from the second inlet (1031) to the second outlet (1032), wherein the slag collecting and filtering system (10) further comprises a driving structure in driving connection with the first filter screen (163) and the second filter screen (164) for driving the first filter screen (163) and the second filter screen (164) to rotate.

2. The slag filtering system (10) according to claim 1, wherein At least a part of the first filter screen (163) is at a distance R1 from a rotating shaft, and the first filter screen (163) rotates at a speed ω1; at least a part of the second filter screen (164) is at a distance R2 from the rotating shaft, and the second filter screen (164) rotates at a speed ω2, wherein ω2 / ω1≥sqrt(R1 / R2).

3. The slag filtering system (10) according to claim 2, wherein The filtering cavity (102) is further provided with a flushing device (1124) for flushing the first filter screen (163), and ω2 / ω1≥1.1×sqrt(R1 / R2).

4. The slag filtering system (10) according to claim 2 or 3, wherein The first filter screen (163) is in a cylindrical shape, and has a radius R1; the second filter screen (164) is in a cylindrical shape, and has a radius R2.

5. The slag filtering system (10) according to claim 4, wherein The radius R1 of the first filter screen (163) is greater than the radius R2 of the second filter screen (164).

6. The slag filtering system (10) according to any one of claims 1-5, wherein The filter screen area of the first filter screen (163) is greater than the filter screen area of the second filter screen (164); and / or, the inner bottom surface of the slag collecting cavity (103) is provided with a boss, and the second filter screen (164) is arranged on the boss.

7. The slag filtering system (10) according to any one of claims 1-6, wherein The driving structure comprises a driving member (14) and a transmission assembly (15), the driving member (14) is in driving connection with the transmission assembly (15), the transmission assembly (15) is in driving connection with the first filter screen (163) and the second filter screen (164) for transmitting the rotating movement of the driving shaft of the driving member (14) to the first filter screen (163) and the second filter screen (164), and the first filter screen (163) and the second filter screen (164) are in driving cooperation.

8. The slag filtering system (10) according to claim 7, wherein The transmission assembly (15) comprises a first gear (151), a second gear (152) and a third gear (153), the first gear (151), the second gear (152) and the third gear (153) are in transmission connection, the first gear (151) is in transmission connection with the driving shaft of the driving member (14), the second gear (152) is in transmission connection with the first filter screen (163), and the third gear (153) is in transmission connection with the second filter screen (164).

9. The slag filtering system (10) according to claim 8, wherein The driving structure further comprises a first shaft (154) in transmission connection with the first filter screen (163) and the first gear (151), the first gear (151) is arranged on the bottom wall of the filtering cavity (102), the first shaft (154) penetrates the bottom wall of the filtering cavity (102) and is provided with a sealing structure; and / or the driving structure further comprises a second shaft (155) in transmission connection with the second filter screen (164) and the second gear (152), the second gear (152) is arranged on the bottom wall of the slag collecting cavity (103), and the second shaft (155) penetrates the bottom wall of the slag collecting cavity (103) and is provided with a sealing structure.

10. The slag filtering system (10) according to any one of claims 1-9, wherein The filtering cavity (102) is provided with a ventilation hole communicating with the external space of the slag collecting and filtering system (10) for balancing the internal and external air pressures of the filtering cavity (102); And / or, during the filtering of the slag collecting and filtering system (10), the slag collecting cavity (103) is closed at positions other than the second inlet (1031) and the second outlet (1032).

11. The slag filtering system (10) according to any one of claims 1-10, wherein The slag collecting cavity (103) further has a slag discharge port (1033), and the slag collecting and filtering system (10) further comprises a drainage pump (13) and a one-way valve (17), the one-way valve (17) is used for opening and closing the slag discharge port (1033), and the drainage pump (13) communicates with the slag discharge port (1033) when the one-way valve (17) is opened.

12. The slag filtering system (10) according to any one of claims 1-11, wherein The slag collecting and filtering system (10) comprises a water cup (11), the water cup (11) comprises a cup body (111) and a flow channel plate (112), the flow channel plate (112) covers the lower part of the cup body (111), and the first outlet (1022) and the second outlet (1032) are arranged on the flow channel plate (112).

13. The slag filtering system (10) according to claim 12, wherein The upper end of the filtering cavity (102) is provided with a filtering cavity cover (1632), the upper end of the first filter screen (163) is rotationally connected to the filtering cavity cover (1632), and the lower end is rotationally connected to the flow channel plate (112); And / or, the upper end of the slag collecting cavity (103) is provided with a slag collecting cavity cover (1642), the upper end of the second filter screen (164) is rotationally connected to the slag collecting cavity cover (1642), and the lower end is rotationally connected to the flow channel plate (112).

14. The slag filtering system (10) according to any one of claims 1-13, wherein The slag collecting and filtering system (10) further comprises a water collecting cavity (101) for collecting washing water, and the first inlet (1021) communicates with the water collecting cavity (101).

15. A dishwasher, wherein, A slag filter system (10) according to any one of claims 1-14.

Images