Slag collecting and filtering system and dish washing machine

Abstract

The utility model discloses a slag collecting and filtering system and a dish washing machine. The slag collecting and filtering system comprises a filtering cavity which is provided with a first inlet and a first outlet and is provided with a first filter screen used for filtering washing water flowing from the first inlet to the first outlet; the residue collecting cavity is provided with a second inlet and a second outlet, the second inlet is communicated with the filter cavity, the residue collecting cavity is provided with a second filter screen and is used for filtering washing flowing from the second inlet to the second outlet, and the driving structure is in transmission connection with the first filter screen and the second filter screen. The first filter screen and the second filter screen are driven to rotate. According to the slag collecting and filtering system disclosed by the embodiment of the utility model, the washing water can be filtered through the filtering cavity, and the slag collecting cavity is used for collecting the slag, so that the filtering effect of the slag collecting and filtering system is improved, and the slag is convenient to discharge.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a slag collection and filtering system and a dishwasher. Background Art

[0002] Dishwashers use internally circulated water to wash dishes using a jet flow, reducing water consumption. During the wash cycle, food debris enters the water and is filtered through a filter. As food debris accumulates, the pores in the filter gradually become clogged with large particles, reducing the water flow through the pump. This reduces the strength of the water jet flow and results in incomplete washing. To ensure optimal dishwashing performance, users must regularly clean the filter.

[0003] In existing internal circulation systems, debris is constantly washed away by the circulating water. Small particles of debris can enter the wash water and be carried onto dishes, causing secondary contamination. To ensure optimal dishwashing performance, several solutions are commonly used: 1) increasing the filter area to reduce the frequency of filter cleaning; 2) using a scraper to clean the side of the filter where debris accumulates.

[0004] However, increasing the filter area increases the cost of the filter. During cleaning, the scraper squeezes out debris, which then passes through the filter and into the water pump, causing secondary pollution, affecting the cleaning effect, affecting the filter's performance and lifespan, and increasing secondary pollution, affecting the cleaning effect. Furthermore, debris adheres to the filter, making it difficult to remove. Utility Model Content

[0005] One purpose of the utility model is to provide a slag collection and filtering system and a dishwasher.

[0006] According to an embodiment of the utility model, a residue collection and filtering system is used for a dishwasher, and the residue collection and filtering system includes: a filter chamber, the filter chamber having a first inlet and a first outlet, the filter chamber being provided with a first filter screen for filtering washing water flowing from the first inlet to the first outlet; a residue collection chamber, the residue collection chamber having a second inlet and a second outlet, the second inlet being connected to the filter chamber, the residue collection chamber being provided with a second filter screen for filtering washing water flowing from the second inlet to the second outlet, wherein the residue collection and filtering system also includes a driving structure, the driving structure being transmission-connected to the first filter screen and the second filter screen, and being used to drive the first filter screen and the second filter screen to rotate.

[0007] According to the slag collection and filtering system of the embodiment of the present invention, the washing water can be filtered through the filter cavity, and the slag collection cavity is used to collect slag, so as to improve the filtering effect of the slag collection and filtering system and facilitate slag discharge.

[0008] In addition, the slag collection and filtration system according to the above embodiment of the utility model may also have the following additional technical features:

[0009] In some embodiments, the distance between at least a portion of the first filter and the rotation axis is R1, and the rotation speed of the first filter is ω1; the distance between at least a portion of the second filter and the rotation axis is R2, and the rotation speed of the second filter is ω2, wherein ω2 / ω1≥sqrt(R1 / R2).

[0010] In some embodiments, the filter cavity is further provided with a flushing device for flushing the first filter screen, and ω2 / ω1≥1.1×sqrt(R1 / R2).

[0011] In some embodiments, the first filter screen is configured to be cylindrical, and the radius of the first filter screen is R1; the second filter screen is configured to be cylindrical, and the radius of the second filter screen is R2.

[0012] In some embodiments, the radius R1 of the first filter screen is greater than the radius R2 of the second filter screen.

[0013] In some embodiments, the filter area of ​​the first filter screen is larger than the filter area of ​​the second filter screen; and / or, a boss is provided on the inner bottom surface of the slag collecting chamber, and the second filter screen is provided on the boss.

[0014] In some embodiments, the driving structure includes 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, and is used to transmit the rotational 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.

[0015] In some embodiments, the transmission assembly includes a first gear, a second gear and a third gear, the first gear, the second gear and the third gear are transmission connected, the first gear is transmission connected to the drive shaft of the driving member, the second gear is transmission connected to the first filter, and the third gear is transmission connected to the second filter.

[0016] In some embodiments, the driving structure further includes a first shaft, which is transmission-connected to the first filter screen and the first gear, the first gear is arranged on the bottom wall of the filter chamber, the first shaft passes through the bottom wall of the filter chamber and is provided with a sealing structure; and / or, the driving structure further includes a second shaft, which is transmission-connected to the second filter screen and the second gear, the second gear is arranged on the bottom wall of the slag collecting chamber, the second shaft passes through the bottom wall of the slag collecting chamber and is provided with a sealing structure.

[0017] In some embodiments, the filter chamber is provided with an air vent, which is connected to the external space of the slag collection filter system to balance the internal and external air pressure of the filter chamber; and / or, when the slag collection filter system is filtering, other positions of the slag collection chamber except the second inlet and the second outlet are closed.

[0018] In some embodiments, the slag collecting chamber further has a slag discharge port, and the slag collecting and filtering system further includes a drainage pump and a one-way valve, wherein the one-way valve is used to open and close the slag discharge port, and the drainage pump is connected to the slag discharge port when the one-way valve is opened.

[0019] In some embodiments, the slag collection and filtration system includes a water cup, the water cup includes a cup body and a flow channel plate, the flow channel plate is covered below the cup body, and the first outlet and the second outlet are provided on the flow channel plate.

[0020] In some embodiments, a filter chamber cover is provided at the upper end of the filter chamber, the upper end of the first filter screen is rotatably connected to the filter chamber cover, and the lower end is rotatably connected to the flow channel plate; and / or, a slag collecting chamber cover is provided at the upper end of the slag collecting chamber, the upper end of the second filter screen is rotatably connected to the slag collecting chamber cover, and the lower end is rotatably connected to the flow channel plate.

[0021] In some embodiments, the residue collection and filtration system further includes a water collection chamber, the water collection chamber is used to collect washing water, and the first inlet is connected to the water collection chamber.

[0022] A dishwasher according to an embodiment of the present invention includes the aforementioned residue collection and filtering system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a slag collection and filtering system according to an embodiment of the present invention.

[0024] Figure 2 It is a schematic diagram of a slag collection and filtering system according to an embodiment of the present invention.

[0025] Figure 3 It is a cross-sectional view of a slag collection and filtering system according to one embodiment of the present invention.

[0026] Figure 4 It is a cross-sectional view of a slag collection and filtering system according to one embodiment of the present invention.

[0027] Figure 5 It is a cross-sectional view of a slag collection and filtering system according to one embodiment of the present invention.

[0028] Figure 6 It is a cross-sectional view of a slag collection and filtering system according to one embodiment of the present invention.

[0029] Figure 7It is a schematic diagram of a slag collection and filtering system according to an embodiment of the present invention.

[0030] Figure 8 It is an explosion diagram of a slag collection and filtering system according to one embodiment of the present invention.

[0031] Figure 9 It is an explosion diagram of a slag collection and filtering system according to one embodiment of the present invention.

[0032] Figure 10 It is a schematic diagram of a water cup of a slag collection and filtration system according to one embodiment of the present invention.

[0033] Reference numerals: 10, slag collection and filtration system; 101, water collection chamber; 161, flat filter screen; 162, filter cup; 102, filter chamber; 1021, first inlet; 1022, first outlet; 1023, vent; 163, first filter screen; 1631, first spoiler; 1632, filter chamber cover; 1633, first sealing ring; 103, slag collection chamber; 1031, second inlet; 1032, second outlet; 1033, slag discharge port; 164, second filter screen; 1641, second spoiler; 1 642. Slag collecting chamber cover; 1643. Second sealing ring; 17. One-way valve; 104. Drain chamber; 11. Water cup; 111. Cup body; 1111. Water diverter valve; 112. Flow channel plate; 1121. Pump flow channel; 1122. Backwash flow channel; 1123. Transmission chamber; 1124. Flushing device; 12. Circulation pump; 13. Drain pump; 14. Driving member; 15. Transmission assembly; 151. First gear; 152. Second gear; 153. Third gear; 154. First shaft; 155. Second shaft. DETAILED DESCRIPTION

[0034] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0035] like Figures 1 to 10According to an embodiment of the present invention, the residue collection filter system 10 is used for a dishwasher. The residue collection filter system 10 includes: a filter chamber 102 and a residue collection chamber 103. The filter chamber 102 has a first inlet 1021 and a first outlet 1022. The first inlet 1021 is used to allow washing water to enter. The filter chamber 102 is used to separate the residue and water in the washing water. The filter chamber 102 is provided with a first filter 163 for filtering the washing water flowing from the first inlet 1021 to the first outlet 1022. The residue collection chamber 103 has a second inlet 1031 and a second outlet 1032. The second inlet 1031 is connected to the filter chamber 102. The residue collection chamber 103 is provided with a second filter 164 for filtering the washing water flowing from the second inlet 1031 to the second outlet 1032. The residue collection chamber 103 is used to collect the residue separated by the filter chamber 102.

[0036] Specifically, during the operation of the dishwasher, the circulation pump 12 can drive the washing water from the residue collection and filtration system 10 to the spray arm and other components for cleaning tableware, and the washing water is used to clean the tableware, etc.; then the washing water flows into the residue collection and filtration system 10; then the washing water is passed into the filter chamber 102, and the washing water entering the filter chamber 102 is separated from the residue; most of the separated water will be passed into the circulation pump 12, and pumped to the spray arm and other components for cleaning tableware by the circulation pump 12, and the separated residue will flow into the residue collection chamber 103.

[0037] According to the slag collection and filtration system 10 of the embodiment of the present invention, the washing water can be filtered through the filter chamber 102, and the slag collection chamber 103 can be used to collect the residue. The residue can be retained in the slag collection chamber 103, which facilitates the collection of residue during the washing process and prevents the residue from remaining in the filter chamber 102 and affecting the separation of slag and water in the washing water in the filter chamber 102, thereby improving the filtering 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 manually or automatically. Since the residue is relatively concentrated, the slag discharge can be convenient.

[0038] In addition, if Figure 3The slag collection and filtration system 10 further includes a circulation pump 12. A first flow channel is provided between the inlet of the circulation pump 12 and the first outlet 1022, and a second flow channel is provided between the inlet of the circulation pump 12 and the second outlet 1032. After the washing water enters the slag collection and filtration system 10, part of the washing water is discharged from the filter chamber 102 through the first outlet 1022, and part of the washing water is discharged from the slag collection chamber 103 through the second outlet 1032. In addition, the circulation pump 12 drives the washing water at the first outlet 1022 to the circulation pump 12 through the first flow channel, and drives the washing water at the second outlet 1032 to the circulation pump 12 through the second flow channel, thereby collecting the washing water to the circulation pump 12 to meet the washing water needs of the dishwasher. Among them, the flow resistance from the filter chamber 102 to the circulation pump 12 is different from the flow resistance from the slag collecting chamber 103 to the circulation pump 12, which can make it easier for the fluid to enter the circulation pump 12 from the filter chamber 102. In this way, the washing water entering the slag collecting filter system 10 will be separated from the slag water in the filter chamber 102, and the residue will be collected in the slag collecting chamber 103, avoiding a large amount of washing water from entering the slag collecting chamber 103, thereby reducing the fluid flow in the slag collecting chamber 103 to facilitate slag collection.

[0039] Optionally, the slag collection and filtering system 10 further includes a driving structure, which is in transmission connection with the first filter screen 163 and the second filter screen 164 and is used to drive the first filter screen 163 and the second filter screen 164 to rotate.

[0040] According to the slag collection and filtering system 10 of the embodiment of the present invention, a driving structure is used to drive the first filter screen 163 and the second filter screen 164 to rotate, thereby facilitating surface cleaning of the first filter screen 163 and the second filter screen 164, avoiding blockage, improving the operating stability of the slag collection and filtering system 10, and extending the cleaning cycle.

[0041] In some embodiments, at least a portion of the first filter 163 is at a distance R1 from the rotation axis, and the rotation speed of the first filter 163 is ω1; at least a portion of the second filter 164 is at a distance R2 from the rotation axis, and the rotation speed of the second filter 164 is ω2, wherein ω2 / ω1≥sqrt(R1 / R2). The centrifugal force F1 of at least a portion of the first filter 163 is equal to ω1^2×R1, and the centrifugal force F2 of at least a portion of the second filter 164 is equal to ω2^2×R2. By limiting ω2 / ω1≥sqrt(R1 / R2), the centrifugal forces of the first and second filter screens 163, 164 can be easily maintained, so as to expel contaminants in the wash water from the first and second filter screens 163, 164, and prevent the first and second filter screens 163, 164 from clogging.

[0042] Optionally, ω2 / ω1 can be set to sqrt(R1 / R2), 1.1×sqrt(R1 / R2), 2.1×sqrt(R1 / R2), or 2.4×sqrt(R1 / R2), etc.

[0043] Furthermore, the filter chamber 102 is provided with a flushing device 1124 for flushing the first filter screen 163, and ω2 / ω1 ≥ 1.1 × sqrt(R1 / R2). Because the filter chamber 102 is provided with the flushing device 1124, under the same centrifugal force, the second filter screen 164 of the slag collection chamber 103 should rotate at a higher speed to prevent clogging. Therefore, through this limitation, clogging of the first filter screen 163 and the second filter screen can be further avoided.

[0044] In some embodiments, such as Figures 3 to 6 The first filter 163 is cylindrical, and the peripheral wall of the first filter 163 is used to filter the washing water. The filtering area of ​​the first filter 163 can be increased. In combination with the above-mentioned first filter 163 being rotatably arranged around the axis of the first filter 163 in the filter chamber 102, the internal space of the first filter 163 is opposite to the first outlet 1022; Figures 3 to 6 The second filter screen 164 can be cylindrical in shape, with the peripheral wall of the second filter screen 164 used for filtering. The inner space of the second filter screen 164 is connected to the second outlet 1032, and the outer space of the second filter screen 164 is connected to the second inlet 1031 and the slag discharge port 1033. This can increase the filtering area of ​​the second filter screen 164. In conjunction with the aforementioned configuration, the second filter screen 164 is rotatably disposed in the slag collecting chamber 103 around its axis, with the inner space of the second filter screen 164 facing the second outlet 1032. In conjunction with the aforementioned embodiment, the radius of the first filter screen 163 is R1; 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. This can improve the filtering effect of the first filter screen 163 and facilitate the collection of residues in the slag collecting chamber 103.

[0045] like Figure 4 、 Figure 8 and Figure 9 In some embodiments, the filter area of ​​the first filter 163 is larger than that of the second filter 164. This allows the first filter 163 to have a larger area for filtration, thereby increasing the filtration flow rate of the first filter 163. This allows the majority of the wash water to be filtered through the first filter 163 and discharged, while only a small portion enters the slag collecting chamber 103. This facilitates the accumulation of residue within the slag collecting chamber 103 and prevents backflow of fluid within the slag collecting chamber 103. Furthermore, the inner bottom surface of the slag collecting chamber 103 may be provided with a boss, and the second filter 164 may be positioned on the boss. This reduces the possibility of clogging of the second filter 164.

[0046] In some embodiments, such as Figure 4 and Figure 7The drive structure includes a drive member 14 and a transmission assembly 15. The drive member 14 is in transmission connection with the transmission assembly 15. The transmission assembly 15 is in transmission connection with the first filter 163 and the second filter 164, and is used to transmit the rotational motion of the drive shaft of the drive member 14 to the first filter 163 and the second filter 164, and the first filter 163 and the second filter 164 are in transmission coordination. It can facilitate the linkage of the first filter 163 and the second filter 164 so that the drive structure can drive the first filter 163 and the second filter 164 to rotate. In addition, it can also facilitate the limitation of the speed ratio of the first filter 163 and the second filter 164 to avoid clogging of the first filter 163 or the second filter 164. Of course, the first filter 163 and the second filter 164 in the utility model can also be set to be driven separately and independently.

[0047] In some embodiments, the transmission assembly 15 includes 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 driving connection with each other. The first gear 151 is drivingly connected to the drive shaft of the driver 14, the second gear 152 is drivingly connected to the first filter 163, and the third gear 153 is drivingly connected to the second filter 164. This facilitates the transmission of power from the driver 14 to the first filter 163 and the second filter 164, thereby improving the stability of the drive structure.

[0048] Alternatively, as Figure 8 The drive structure also includes a first shaft 154, which is drivingly connected to the first filter screen 163 and the first gear 151. The first gear 151 is located on the bottom wall of the filter chamber 102. The first shaft 154 penetrates the bottom wall of the filter chamber 102 and is equipped with a sealing structure. The upper end of the first filter screen 163 may be provided with a first mounting hole. The upper end of the first shaft 154 penetrates the first mounting hole. The first shaft 154 and the first mounting hole may be keyed to facilitate the rotation of the first filter screen 163 by the first shaft 154. The lower end of the first shaft 154 is connected to the second gear 152. The lower end of the first shaft 154 penetrates the bottom wall of the filter chamber 102 and is equipped with a bearing and an oil seal.

[0049] Alternatively, as Figure 9The driving structure also includes a second shaft 155, which is connected to the second filter screen 164 and the second gear 152 in a transmission manner. The second gear 152 is provided on the bottom wall of the slag collecting chamber 103. The second shaft 155 passes through the bottom wall of the slag collecting chamber 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, and the upper end of the second shaft 155 passes through the second mounting hole. The second shaft 155 and the second mounting hole can be provided with a key fit, etc., so that the second filter screen 164 can be driven to rotate by the second shaft 155. The lower end of the second shaft 155 is connected to the second gear 152. The lower end of the second shaft 155 passes through the bottom wall of the filter chamber 102 and is provided with a bearing and an oil seal. In addition, the bottom of the slag collecting filtration system 10 of the present invention is provided with a flow channel plate 112, and the flow channel plate 112 can also be provided with a transmission chamber 1123, and a transmission assembly 15 is provided in the transmission chamber 1123.

[0050] Alternatively, as Figure 3 The slag collection and filtering system 10 further includes a first spoiler 1631, which is provided in the filter chamber 102 and is used to stir the washing water in the filter chamber 102. The first spoiler 1631 can be connected to the lower end of the first filter screen 163 and includes a plurality of first blades spaced apart along the circumference of the first filter screen 163. Figure 3 and Figure 9 The slag collection and filtering system 10 also includes a second spoiler 1641, which is arranged in the slag collection chamber 103 and is used to stir the water and residue in the slag collection chamber 103. The second spoiler 1641 can be connected to the lower end of the second filter screen 164 and includes a plurality of second blades distributed at circumferential intervals along the second filter screen 164.

[0051] In some embodiments, the filter mesh pore size of the first filter screen 163 is set to be no less than 0.1 mm and no greater than 1 mm. When the first filter screen 163 is rotatable and the rotation speed is relatively high (for example, greater than 1000 rpm), the filter mesh pore size of the first filter screen 163 can be appropriately enlarged. Optionally, the filter mesh pore size of the first filter screen 163 is set to be no less than 0.6 mm and no greater than 1 mm. For example, the filter mesh pore size of the first filter screen 163 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 first filter screen 163 is relatively low (for example, no greater than 1000 rpm), the filter mesh pore size of the first filter screen 163 can be appropriately reduced.

[0052] In some embodiments, the pore size of the second filter screen 164 is set to be no less than 0.1 mm and no greater than 1 mm. When the second filter screen 164 is rotatable and the rotation speed is relatively high (e.g., greater than 1000 rpm), the pore size of the second filter screen 164 can be appropriately enlarged. Alternatively, the pore size of the second filter screen 164 is set to be no less than 0.6 mm and no greater than 1 mm. For example, the pore size of the second filter screen 164 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 second filter screen 164 is relatively low (e.g., no greater than 1000 rpm), the pore size of the second filter screen 164 can be appropriately reduced.

[0053] In some embodiments, the filter chamber 102 is provided with a vent that connects to the exterior of the slag collection filter system 10 to balance the internal and external pressures of the filter chamber 102. Alternatively, during filtration by the slag collection filter system 10, all locations of the slag collection chamber 103, except for the second inlet 1031 and the second outlet 1032, are sealed. Optionally, a vent 1023 is provided between the water collection chamber 101 and the filter chamber 102. The vent 1023 connects to the exterior of the slag collection filter system 10 to balance the internal and external pressures of the filter chamber 102. The vent 1023 can be located at the upper end of the peripheral wall of the filter chamber 102. This facilitates the discharge of wash water into the filter chamber 102, facilitating filtration by the slag collection filter system 10, and effectively improving filtration efficiency and effectiveness. Furthermore, the vent 1023 being higher than the first inlet 1021 and / or no lower than the second inlet 1031 can reduce the likelihood of clogging. In addition, when the slag collection and filtering system 10 is filtering, the other positions of the slag collection chamber 103 except the second inlet 1031 and the second outlet 1032 are closed, which can facilitate the formation of a relatively high-pressure environment in the slag collection chamber 103, thereby reducing the water flowing into the slag collection chamber 103, and can achieve the retention of residues in the slag collection chamber 103, thereby improving the filtering efficiency and effect of the slag collection and filtering system 10.

[0054] In some embodiments, the slag collection chamber 103 may further include a slag discharge port 1033, and the slag collection and filtration system 10 may further include a drainage pump 13, which is connected to the slag discharge port 1033. Optionally, the slag collection and filtration system 10 may further include a one-way valve 17, which is used to open and close the slag discharge port 1033. The drainage pump 13 is connected to the slag discharge port 1033 when the one-way valve 17 is open. The one-way valve 17 may include a cover plate, a rubber cover, a bracket, and a third sealing ring, primarily to open and close the slag discharge port 1033. The bracket may serve as a support, assembled with the slag discharge port 1033, and sealed by a sealing ring. The bracket may have an opening, and the rubber cover may be connected to the bracket and configured to rotate to open and close the opening. The portion of the rubber cover opposite the opening is provided with a cover plate to provide support for the rubber cover, thereby improving the sealing effect when the rubber cover closes the opening. The one-way valve 17 is used to open and close the slag discharge port 1033. The inner bottom surface of the slag collecting chamber 103 can be configured as a slope that gradually slopes downward from the filter chamber 102 to the slag discharge port 1033. The lower end of the second filter screen 164 can be configured to be higher than the inner bottom surface of the slag collecting chamber 103. This prevents residue remaining in the slag collecting chamber 103 from adhering to the surface of the second filter screen 164, thereby improving the filtering performance of the second filter screen 164. The inner bottom surface of the slag collecting chamber 103 is provided with a boss, and the second outlet 1032 is located on the top surface of the boss. The second filter screen 164 is also located on the boss.

[0055] In some embodiments, the slag collection and filtration system 10 includes a water cup 11, which may include a water collection chamber 101, a filter chamber 102, a slag collection chamber 103, a drainage chamber 104, and a diversion chamber. This can improve the integration of the slag collection and filtration system 10, simplify the slag collection and filtration system 10, and enhance the stability of the dishwasher. Of course, the water collection chamber 101, filter chamber 102, and slag collection chamber 103 in the present invention can also be configured as separate structures. Optionally, the water cup 11 includes a cup body 111 and a flow plate 112, which covers the bottom of the cup body 111. The first outlet 1022 and the second outlet 1032 are located on the flow plate 112, and at least a portion of the first flow channel and / or at least a portion of the second flow channel are located on the flow plate 112. This can improve the integration of the slag collection and filtration system 10, simplify the structure, optimize the water path, and facilitate the connection of the circulation pump 12 to the slag collection chamber 103 and the filter chamber 102.

[0056] The flow plate 112 serves as the bottom wall of the filter chamber 102 and the slag collecting chamber 103. A flushing channel is provided in the flow plate 112, which is connected to a flushing device 1124 and is used to connect to the circulation pump 12. A transmission chamber 1123 is also provided in the flow plate 112, and the transmission assembly 15 is provided in the transmission chamber 1123.

[0057] In some embodiments, the flow channel plate 112 is also provided with a pump interface for connecting to the circulation 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 between the circulation pump 12, the first outlet 1022 and the second outlet 1032, simplify the flow path, and facilitate the assembly and maintenance of the slag collection and filtration system 10.

[0058] In some embodiments, the filter chamber 102 is provided with a first filter screen 163, the first inlet 1021 and the second inlet 1031 are provided on one side of the first filter screen 163, and the first outlet 1022 is provided on the other side of the first filter screen 163; the slag collecting chamber 103 is provided with a second filter screen 164, the second inlet 1031 is provided on one side of the second filter screen 164, and the second outlet 1032 is provided on the other side of the second filter screen 164.

[0059] Alternatively, as Figure 4 and Figure 8 A filter chamber cover 1632 is provided at the upper end of the filter chamber 102. A first filter screen 163 is rotatably mounted on the filter chamber 102. The upper end of the first filter screen 163 is rotatably connected to the filter chamber cover 1632, and the lower end is rotatably connected to the flow channel plate 112. The first filter screen 163 can be configured to rotate freely, that is, the first filter screen 163 can be configured to rotate under the drive of the water flow; alternatively, the first filter screen 163 can be configured to rotate driven by the drive member 14. A first groove is provided on the circumferential surface of the filter chamber cover 1632. A first sealing ring 1633 is provided along the circumference of the filter chamber cover 1632 and engages with the first groove. The first sealing ring 1633 seals the gap between the filter chamber cover 1632 and the inner circumferential surface of the filter chamber 102. Furthermore, the filter chamber cover 1632 is further provided with a bearing. The upper end of the first filter screen 163 is connected to the bearing, and the bearing is used to achieve a rotational connection between the first filter screen 163 and the filter chamber cover 1632. The upper end of the first filter screen 163 is rotatably connected to the filter chamber cover 1632 .

[0060] Alternatively, as Figure 4 and Figure 9A slag chamber cover 1642 is provided at the upper end of the slag chamber 103. A second filter screen 164 is rotatably mounted within the slag chamber 103. The upper end of the second filter screen 164 is rotatably connected to the slag chamber cover 1642, while the lower end is rotatably connected to the flow channel plate 112. The second filter screen 164 can be configured to rotate freely, that is, driven by the water flow; alternatively, the second filter screen 164 can be configured to rotate driven by the drive member 14. A second groove is provided on the circumferential surface of the slag chamber cover 1642. A second sealing ring 1643 is disposed along the circumference of the slag chamber cover 1642 and engages with the groove. The second sealing ring 1643 seals the gap between the slag chamber cover 1642 and the inner circumferential surface of the slag chamber 103. Furthermore, the slag chamber cover 1642 is provided with a bearing. The upper end of the second filter screen 164 is connected to the bearing, utilizing the bearing to achieve a rotatable connection between the second filter screen 164 and the slag chamber cover 1642. The upper end of the second filter screen 164 is rotatably connected to the slag collecting chamber cover 1642 , and the lower end of the second filter screen 164 is rotatably connected to the bottom wall of the slag collecting chamber 103 .

[0061] Alternatively, as Figure 4 The flow channel plate 112 is provided with a flushing device 1124, which extends into the filter chamber 102 for flushing the first filter screen 163. The flow channel plate 112 is also provided with a backwash channel 1122, which is connected to the flushing device 1124, and the backwash channel 1122 is configured to be connected to the outlet of the wash circulation pump 12. The flushing device 1124 is configured to spray water toward the first filter screen 163 to flush the first filter screen 163. The flushing device 1124 can be provided downstream of the first filter screen 163 and spray water toward the first filter screen 163. The first filter screen 163 can be provided in a cylindrical shape, and the peripheral wall of the first filter screen 163 is used to separate the residue and water in the wash water, wherein the inner space of the first filter screen 163 is connected to the first outlet 1022, and the outer space of the first filter screen 163 is connected to the first inlet 1021 and the second inlet 1031.

[0062] The flushing device 1124 may include at least one backwash spray arm positioned inside the first filter 163 and spraying water toward the perimeter of the first filter 163. The backwash spray arm is configured to extend along the axis of the first filter 163 and offset from the central axis of the first filter 163. The spray range of the at least one backwash spray arm covers the entire first filter 163 along the axis of the first filter 163. In other words, the backwash spray arm's flushing area may cover the entire first filter 163 along the axis. Optionally, multiple backwash spray arms may be provided, and the multiple backwash spray arms may be distributed along the circumference of the first filter 163. The flushing device 1124 is connected to the outlet of the circulation pump 12. The slag filtration system 10 is provided with a water diversion valve 1111 for connecting the spray arm. The outlet of the circulation pump 12 is connected to the water diversion valve 1111. The circulation pump 12 is connected to a flushing branch, one end of which is connected to the outlet and the other end is connected to the flushing device 1124.

[0063] In some embodiments, the debris collection and filtration system 10 further includes a water collection chamber 101 for collecting wash water, with a first inlet 1021 communicating with the water collection chamber 101. Optionally, the water collection chamber 101 and the filter chamber 102 are arranged side by side, with the first inlet 1021 located between the water collection chamber 101 and the filter chamber 102. The filter chamber 102 and the debris collection chamber 103 are arranged side by side, with the second inlet 1031 located between the filter chamber 102 and the debris collection chamber 103. The second inlet 1031 can be positioned above the bottom of both the filter chamber 102 and the bottom of the debris collection chamber 103. Optionally, the water collection chamber 101, the filter chamber 102, and the debris collection chamber 103 are arranged side by side, with the water collection chamber 101 adjacent to the filter chamber 102, the filter chamber 102 adjacent to the debris collection chamber 103, and the debris collection chamber 103 adjacent to the water collection chamber 101. This facilitates the flow of water and debris, facilitating filtration of wash water and collection of debris.

[0064] In addition, the slag collection and filtering system 10 may include a drainage chamber 104 , which is disposed below the water collection chamber 101 and connects the water collection chamber 101 and the slag discharge port 1033 . The drainage pump 13 is connected to the drainage chamber 104 .

[0065] like Figure 1 、 Figure 4 and Figure 6In some embodiments, the residue collection and filtration system 10 further includes: a flat filter screen 161 having an installation opening, and the flat filter screen 161 is configured to be inclined downward from the periphery to the installation opening, and the upper end of the water collection chamber 101 is provided with a water collection opening and is opposite to the installation opening; and a filter cup 162, the filter cup 162 being inserted through the installation opening and the water collection chamber 101. The filter screens (first filter screen 163, second filter screen 164, and filter cup 162) in the present invention can be configured as an easily assembled and disassembled structure, and can all be removed from the inside of the cleaning chamber, facilitating later maintenance. The peripheral wall of the filter cup 162 is provided with a first filter portion, and the bottom wall is provided with a second filter portion. The first filter element filters the washing water from the water collection chamber 101 to the filter chamber 102, and the second filter portion is used to filter the washing water from the water collection chamber 101 to the drainage chamber 104. This can facilitate the discharge of residue. Optionally, the mesh size of the first filter portion is larger than the mesh size of the second filter portion. Optionally, a positioning portion is provided at the lower end of the water collecting chamber 101, and the lower end of the filter cup 162 is detachably fastened to the positioning portion, so as to facilitate filtering and removal of the filter cup 162, so as to facilitate primary filtration and the disposal of larger residues.

[0066] A dishwasher according to an embodiment of the present invention includes the aforementioned residue collection and filtering system.

[0067] Combine Figures 1 to 10 The slag collection and filtration system 10 of the present invention can include a water collection chamber 101, a filter chamber 102, a slag collection chamber 103, a circulation pump 12, a drainage pump 13, and a water diversion valve 1111. It has a multi-stage filtration function, primarily utilizing a flat filter screen 161, a filter cup 162, a first filter screen 163, a second filter screen 164, a circulation pump 12, a driver 14, and a transmission assembly 15 for multi-stage filtration.

[0068] Specifically, the primary filtration system includes a flat filter 161 and a filter cup 162. During the washing process, water rinses the surface of the dishes, carrying debris to the bottom of the washing chamber. The water then flows through the flat filter 161 and collects in the water collection chamber 101. Debris smaller than the pore size of the flat filter 161 (the pore size of the flat filter 161 is 0.5-2 mm) enters the filter chamber 102. Debris larger than the pore size of the flat filter 161 enters the filter cup 162.

[0069] Filter cup 162 has two aperture sizes. The side aperture of filter cup 162 is small and can be set to 0.5 to 3 mm. The bottom aperture of filter cup 162 is large and can be set to 5 to 10 mm. Residue larger than the bottom aperture of filter cup 162 requires manual cleaning. Residue smaller than the bottom aperture of filter cup 162 and larger than the side aperture is discharged through drainage pump 13 during drainage. Residue smaller than the side aperture of filter cup 162 enters filter chamber 102. Primary filtration achieves filtration of residue larger than 3 mm.

[0070] The secondary filtration system consists of a first filter 163 and a second filter 164. The pore sizes of the first and second filters 163 and 164 can be the same or different. Water and debris entering the filter chamber 102 are filtered through the first filter 163. Tiny particles smaller than the first filter 163 pass through the filter and enter the circulation pump 12 along with the water. Residue larger than the first filter 163 (size ranges from 0.1 to 3 mm) enters the slag chamber 103. During drainage, the residue in the slag chamber 103 is discharged via the drainage pump 13.

[0071] The first filter screen 163 and the second filter screen 164 of the secondary filtration are driven to rotate by the driving member 14 and the transmission assembly 15. Under the action of centrifugal force, the residue is separated from the filter screen.

[0072] The first filter screen 163 and / or the second filter screen 164 of the present invention may be rotatable to utilize centrifugal separation.

[0073] Specifically, the water after the first-stage filtration enters the filter chamber 102, and the first filter screen 163 rotates at high speed under the drive of the driving member 14 (such as a motor). Through the high-speed rotation of the first filter screen 163, the pollutants attached to the surface of the first filter screen 163 are separated from the filter screen, so that the first filter screen 163 has better water permeability. A first blade is provided on the first filter screen 163. The rotating first blade pushes the water to flush the surface of the first filter screen 163, accelerates the separation of the residue and the filter screen, and makes the filter screen clean more thoroughly. In addition, the first inlet 1021 is provided on the peripheral surface of the filter chamber 102, the first outlet 1022 is provided on the bottom surface of the filter chamber 102, and the second inlet 1031 is provided on the peripheral surface of the filter chamber 102. When the circulation pump 12 is working, water is sucked from the filter chamber 102 into the pump chamber of the circulation pump 12. A low-pressure zone is formed at the first outlet 1022, the outside of the filter screen of the filter chamber 102 is a relatively high-pressure zone, and the first inlet 1021 is a relatively high-pressure zone; a low-pressure zone is formed at the second outlet 1032, and the second inlet 1031 is a relatively high-pressure zone. Therefore, some water will pass through the slag collecting chamber 103 and enter the second outlet 1032. Pollutants outside the first filter screen 163 are pushed along by the water flow toward the second inlet 1031 and enter the slag collecting chamber 103 through the second inlet 1031. Because the water flow in the slag collecting chamber 103 is relatively slow and a second filter screen 164 is provided at the second outlet 1032, pollutants are collected in the slag collecting chamber 103, realizing the residue collection function and separating pollutants from the circulating water. Therefore, the water used to wash the dishes is always clean water, avoiding secondary contamination of the dishes. In addition, the utility model is also provided with a cleaning module to clean the first filter screen 163, and the cleaning of the first filter screen 163 is achieved through the circulating water microfiltration function and the centrifugal cleaning filter screen function.

[0074] In addition, during the cleaning process, the water that has passed the first-stage filtration enters the slag collecting chamber 103 from the second inlet 1031 through the filter chamber 102. The residue is collected in the slag collecting chamber 103 and separated from the main circulating water, thereby achieving slag-water separation. In order to solve the problem of residue clogging the second filter screen 164, a second blade is provided at the bottom of the second filter screen 164. The second filter screen 164 is driven to rotate by a motor. The second blade drives the water flow to flush the surface of the filter screen, separating the residue from the surface of the filter screen. When draining, the second filter screen 164 rotates, and the second spoiler 1641 stirs the water in the slag collecting chamber 103, causing the residue to mix with the water and move. The residue is discharged through the slag discharge port 1033 of the slag collecting chamber 103. The slag collecting chamber 103 can realize the functions of residue collection and slag-water separation.

[0075] The slag collection and filtration system 10 of this utility model can separate slag from circulating water, achieving clean water washing and avoiding secondary contamination. Centrifugal separation can automatically clean the filter screen, eliminating the need for manual maintenance. It can ensure stable water output from the water pump and improve the working efficiency of the water pump. It can also make it easier to discharge the accumulated slag. All filters can be easily removed for easy maintenance.

[0076] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0077] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0078] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0079] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. 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 can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0081] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A slag collection and filtering system (10) for a dishwasher, characterized in that: The slag collection and filtering system (10) comprises: a filter chamber (102), the filter chamber (102) having a first inlet (1021) and a first outlet (1022), the filter chamber (102) being provided with a first filter screen (163) for filtering wash water flowing from the first inlet (1021) to the first outlet (1022); A slag collecting chamber (103), the slag collecting chamber (103) having a second inlet (1031) and a second outlet (1032), the second inlet (1031) being connected to the filter chamber (102), the slag collecting chamber (103) being provided with a second filter screen (164) for filtering the washing liquid flowing from the second inlet (1031) to the second outlet (1032), The slag collection and filtering system (10) further comprises a driving structure, wherein the driving structure is in transmission connection with the first filter screen (163) and the second filter screen (164) and is used to drive the first filter screen (163) and the second filter screen (164) to rotate.

2. The slag collection and filtering system (10) according to claim 1, characterized in that: The distance between at least a portion of the first filter (163) and the rotation axis is R1, and the rotation speed of the first filter (163) is ω1; the distance between at least a portion of the second filter (164) and the rotation axis is R2, and the rotation speed of the second filter (164) is ω2, wherein ω2 / ω1≥sqrt(R1 / R2).

3. The slag collection and filtering system (10) according to claim 2, characterized in that: The filter chamber (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 collection and filtering system (10) according to claim 2, characterized in that: The first filter screen (163) is configured to be cylindrical, and the radius of the first filter screen (163) is R1; the second filter screen (164) is configured to be cylindrical, and the radius of the second filter screen (164) is R2.

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

6. The slag collection and filtering system (10) according to claim 1, characterized in that: The filter area of ​​the first filter screen (163) is greater than the filter area of ​​the second filter screen (164); and / or, the inner bottom surface of the slag collecting chamber (103) is provided with a boss, and the second filter screen (164) is provided on the boss.

7. The slag collection and filtering system (10) according to claim 1, characterized in that: The driving structure includes a driving member (14) and a transmission assembly (15), wherein the driving member (14) is in transmission connection with the transmission assembly (15), and the transmission assembly (15) is in transmission connection with the first filter screen (163) and the second filter screen (164), and is used for transmitting the rotational 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.

8. The slag collection and filtering system (10) according to claim 7, characterized in that: 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 collection and filtering system (10) according to claim 8, characterized in that: The driving structure further comprises a first shaft (154), the first shaft (154) being transmission-connected to the first filter screen (163) and the first gear (151), the first gear (151) being arranged on the bottom wall of the filter chamber (102), the first shaft (154) passing through the bottom wall of the filter chamber (102) and being provided with a sealing structure; and / or, the driving structure further comprises a second shaft (155), the second shaft (155) being transmission-connected to the second filter screen (164) and the second gear (152), the second gear (152) being arranged on the bottom wall of the slag collecting chamber (103), the second shaft (155) passing through the bottom wall of the slag collecting chamber (103) and being provided with a sealing structure.

10. The slag collection and filtering system (10) according to any one of claims 1 to 9, characterized in that: The filter cavity (102) is provided with a vent hole, and the vent hole is connected to the external space of the slag collection and filtering system (10) for balancing the internal and external air pressures of the filter cavity (102); And / or, when the slag collection and filtering system (10) is filtering, other positions of the slag collection chamber (103) except the second inlet (1031) and the second outlet (1032) are closed.

11. The slag collection and filtering system (10) according to any one of claims 1 to 9, characterized in that: The slag collecting chamber (103) further comprises 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), wherein the one-way valve (17) is used to open and close the slag discharge port (1033), and the drainage pump (13) is connected to the slag discharge port (1033) when the one-way valve (17) is opened.

12. The slag collection and filtering system (10) according to any one of claims 1 to 9, characterized in that: The slag collection and filtering system (10) comprises a water cup (11), wherein the water cup (11) comprises a cup body (111) and a flow channel plate (112), wherein the flow channel plate (112) covers the bottom of the cup body (111), and the first outlet (1022) and the second outlet (1032) are provided on the flow channel plate (112).

13. The slag collection and filtering system (10) according to claim 12, characterized in that: A filter chamber cover (1632) is provided at the upper end of the filter chamber (102); the upper end of the first filter screen (163) is rotatably connected to the filter chamber cover (1632), and the lower end is rotatably connected to the flow channel plate (112); And / or, a slag collecting chamber cover (1642) is provided at the upper end of the slag collecting chamber (103), and the upper end of the second filter screen (164) is rotatably connected to the slag collecting chamber cover (1642), and the lower end is rotatably connected to the flow channel plate (112).

14. The slag collection and filtering system (10) according to claim 1, characterized in that: The slag collection and filtering system (10) further comprises a water collection chamber (101), wherein the water collection chamber (101) is used to collect washing water, and the first inlet (1021) is connected to the water collection chamber (101).

15. A dishwasher, characterized in that: The invention comprises a slag collection and filtering system (10) according to any one of claims 1 to 14.

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