Filtering device and washing machine

Abstract

The application belongs to the technical field of washing machines, and discloses a filtering device and a washing machine, the filtering device comprising: a filtering cavity having a water inlet, a filtered water outlet and a blowdown port for discharging filtered impurities outward; a filtering mechanism rotatably arranged inside the filtering cavity and used for filtering water entering the filtering cavity; cleaning particles arranged in the filtering cavity and used for rubbing and colliding with the inner wall of the filtering cavity and the outer wall of the filtering mechanism along with the water flow; and an intercepting mechanism arranged outside the filtering cavity and communicated with the blowdown port and used for intercepting the cleaning particles discharged from the blowdown port. In the application, the arrangement of the cleaning particles can prevent the deposition of filtered impurities in the filtering process and avoid the clogging of the filtering device; when the filtered impurities are discharged along with the water flow through the blowdown port, the cleaning particles are also discharged out of the filtering cavity, and then the cleaning particles are intercepted by the intercepting mechanism, so that the cleaning particles can be reused, and meanwhile, the accumulation of the cleaning particles in the blowdown port is avoided, which can ensure the smooth discharge of sewage in the filtering cavity.

Description

Technical Field

[0001] This invention belongs to the field of washing machine technology, specifically, it relates to a filtration device and a washing machine. Background Technology

[0002] During the washing process, friction between clothes and between clothes and the washing machine itself causes lint to shed and mix into the wash water. If this lint isn't removed, it may adhere to the clothes after washing, affecting the cleaning effect. Therefore, existing washing machines are equipped with lint filters that circulate the wash water through the filter during the washing process to remove the lint.

[0003] The filters in most washing machines are located inside the inner drum or drain pump to remove lint and debris from the wash water. However, after prolonged use, these filters become clogged with lint and debris, affecting their filtration efficiency, clogging the drain valve / pump, and easily breeding bacteria. Timely cleaning is essential to prevent contamination of the wash water, causing secondary pollution of clothes and impacting user health. However, most washing machines require users to remove the filter for manual cleaning, which is inconvenient.

[0004] On the other hand, some filters, designed to prevent lint from clogging the filter pores, typically have larger pore sizes. However, this can result in some fine lint from clothing not being filtered out, causing it to stick to the garment and negatively impacting the user experience. Furthermore, some of this lint will be carried away by the water flow, entering the ecological cycle and ultimately affecting human health.

[0005] Chinese Patent Application No. 201310612183.8 discloses a filter and a washing machine. The filter includes a filter cylinder and a filter screen. The cylinder has an inlet, an outlet, and a drain outlet. The filter screen is installed inside the cylinder and divides the inner cavity of the filter cylinder into an inner cavity and an outer cavity. The upper end of the inner cavity is connected to the inlet, and the lower end is connected to the drain outlet. The outer cavity is connected to the outlet. Wastewater flows into the inner cavity from the inlet, is filtered by the filter screen, enters the outer cavity, and flows out through the outlet. Filtered impurities are discharged through the drain outlet.

[0006] In the above solutions, the filter structure is designed to prevent impurities from easily adhering to the filter screen and facilitate their discharge, reducing the need for manual cleaning. However, this does not achieve complete automatic cleaning of the filter, and manual cleaning is still required when necessary. Furthermore, these solutions struggle to clean the inside of the filter during the circulating filtration process. When there are many impurities such as lint in the water, they may cover the filter screen, severely impacting filtration efficiency.

[0007] In view of this, the present invention is hereby proposed. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a filtration device and a washing machine. The filtration device has cleaning particles in the filter chamber. During the filtration process, the friction of the cleaning particles against the inside of the filtration device can prevent the deposition of filter impurities and ensure filtration efficiency. At the same time, an interception mechanism is set outside the filter chamber. When filter impurities are discharged, the cleaning particles are discharged with the sewage and are then intercepted by the interception mechanism, which prevents the cleaning particles from accumulating inside the filter chamber at the drain outlet and affecting the smooth discharge of sewage.

[0009] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0010] A filtration device, comprising:

[0011] The filter chamber has a water inlet, a filtered water outlet, and a drain outlet to discharge filtered impurities.

[0012] The filtration mechanism is rotatably installed inside the filtration chamber to filter the water entering the filtration chamber.

[0013] The filtration device further includes:

[0014] Cleaning particles are placed inside the filter chamber and are used to clean the inner wall of the filter chamber and the outer wall of the filter mechanism by friction and collision with the water flow.

[0015] An interception mechanism is installed outside the filter chamber and connected to the drain outlet to intercept cleaning particles discharged from the drain outlet.

[0016] Furthermore, the interception mechanism includes a particle collection chamber having an inlet end communicating with a sewage outlet and an outlet end for discharging sewage carrying filtered impurities.

[0017] A blocking element is provided in the particle collection chamber to prevent the washing particles from being discharged from the outlet end.

[0018] Furthermore, the blocking element is a baffle, the distance between the baffle and the inner wall of the particle collection chamber is D, the width of the cleaning particles is d, and D < d;

[0019] Preferably, the baffle is arranged perpendicular to the flow direction of the water in the particle collection chamber.

[0020] Furthermore, the diameter of the drain outlet and the diameter of the inlet of the particle collection chamber are greater than the width d of the cleaning particles.

[0021] Furthermore, the interception mechanism is positioned below the drain outlet of the filter device, and the density of the cleaning particles is less than the density of water;

[0022] Preferably, the density of the cleaning particles is 0.3 to 0.9 times that of water, and more preferably 0.4 to 0.6 times.

[0023] Furthermore, the outer periphery of the filtered water outlet extends outward from the filter cavity to form a sealing support portion;

[0024] The filtration mechanism has a rotatable water outlet connector inserted into the sealing support, and a bearing is sleeved on the water outlet connector; a sealing element is provided on the side of the bearing facing the interior of the filtration chamber, and the sealing element seals the gap between the water outlet connector and the sealing support.

[0025] Furthermore, the orientation of both the water inlet and the sewage outlet is perpendicular to the axis of the filtration mechanism;

[0026] Preferably, the filter chamber has a columnar structure, with the water inlet located at one end of the filter chamber and the sewage outlet located at the other end of the filter chamber.

[0027] Another object of the present invention is to provide a washing machine, comprising:

[0028] water container;

[0029] The circulating filtration pipeline has its inlet and outlet ends connected to a water container, and the filtration device described above is installed on it.

[0030] Furthermore, it also includes a recovery device connected to the outlet end of the interception mechanism for collecting discharged filter impurities;

[0031] Preferably, the outlet end of the interception mechanism is connected to the recycling device through a sewage discharge pipeline, and a sewage control valve for controlling the opening and closing of the sewage discharge pipeline is provided on the sewage discharge pipeline.

[0032] Furthermore, the recycling device includes:

[0033] The shell has an internal recovery chamber;

[0034] A filter assembly is disposed within the recovery chamber, dividing the recovery chamber into a first chamber and a second chamber;

[0035] The outlet end of the interception mechanism is connected to the first chamber. Wastewater carrying filtered impurities enters the first chamber, is filtered by the filter assembly, and then enters the second chamber. The filtered impurities are collected in the first chamber.

[0036] Preferably, the second chamber is provided with a water outlet for discharging filtered clean water;

[0037] Preferably, the washing machine further includes a cabinet, and the water tank and the filter device are both disposed in the cabinet; the housing is insertable / removable on the cabinet.

[0038] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0039] In this invention, cleaning particles are installed inside the filtration device. During the filtration process, the cleaning particles continuously rub against the inner wall of the filtration chamber and the outer wall of the filtration mechanism under the influence of water flow, preventing the deposition of filtered impurities and avoiding clogging of the filtration device that could affect filtration efficiency. After filtration is completed, the filtered impurities accumulated during the filtration process can be discharged through the drain outlet with the water flow, and the cleaning particles in the filtration chamber can also be discharged from the filtration chamber with the water flow. The cleaning particles are then intercepted and collected by an interception mechanism located downstream of the drain outlet, allowing them to be reused. This also prevents the cleaning particles from accumulating in the filtration chamber at the drain outlet, ensuring the smooth discharge of wastewater from the filtration chamber.

[0040] In this invention, a blocking component is installed in the particle collection chamber. The cleaning particles enter the particle collection chamber along with the water flow, while wastewater carrying filtered impurities is discharged through the gap between the blocking component and the inner wall of the filter chamber. The cleaning particles are blocked by the blocking component and thus collected in the particle collection chamber. The structure is simple and enables the reusability of the cleaning particles. Since the density of the cleaning particles is less than that of water, and the interception mechanism is lower than the drain port of the filter device, when water is fed into the filter device again for filtration, the cleaning particles in the interception mechanism float to the surface and automatically return to the filter chamber, cleaning the inside of the filter chamber.

[0041] In this invention, by driving the water in the water tank to circulate along the circulating filtration pipeline, the water continuously passes through the filtration device on the circulating filtration pipeline, removing impurities such as lint from the water, thereby reducing the lint content in the water in the water tank and improving the washing effect. The recovery device is connected to the outlet end of the interception mechanism, which can receive the wastewater carrying the filtered impurities discharged from the filtration device, preventing the filtered impurities from directly flowing into the washing machine's drain water and being discharged outwards, causing the fine lint to enter the ecological cycle and harm human health.

[0042] In this invention, a filtration assembly is installed in the recycling device to filter the wastewater entering the recycling chamber, thereby separating the filtered impurities from the water and avoiding the situation where the filtered impurities mix with the water and are difficult to handle. At the same time, the filtered clean water can be poured into a water container for reuse or discharged into a drainage pipe without causing fine debris to affect the ecological environment.

[0043] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0044] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0045] Figure 1 This is a schematic diagram of the filter device installed in the washing machine according to Embodiment 1 of the present invention;

[0046] Figure 2 This is the present invention. Figure 1 Enlarged view of point A in the middle;

[0047] Figure 3 This is a schematic diagram of the washing machine performing a self-cleaning operation in Embodiment 1 of the present invention;

[0048] Figure 4 This is a schematic diagram of the washing machine performing a sewage discharge operation in Embodiment 1 of the present invention;

[0049] Figure 5 This is the present invention. Figure 4 Enlarged view of point B in the middle;

[0050] Figure 6 This is a schematic diagram of the filtration device in Embodiment 3 of the present invention;

[0051] Figure 7 This is the present invention. Figure 6 A schematic diagram of the CC section.

[0052] In the diagram: 10. Box body; 100. Water tank; 110. Window gasket; 210. Drainage pipe; 220. Circulation pipe; 230. Return water pipe; 231. Return water control valve; 240. Sewage pipe; 241. Sewage control valve; 250. External discharge pipe; 260. Water tank drain pipe; 270. Switching device; 400. Circulation pump; 500. Recovery device; 501. Filter impurities; 510. Shell; 520. Filter assembly; 531. First chamber; 532. Second chamber;

[0053] 600. Filter device; 601. First limiting surface; 602. Second limiting surface; 603. Third limiting surface; 604. Fourth limiting surface; 605. Fifth limiting surface; 606. Sixth limiting surface; 610. Filter chamber; 6101. Water inlet; 6102. Filtered water outlet; 6103. Sewage outlet; 6104. Mounting port; 611. Sealing support; 612. Sleeve; 613. Reinforcing rib; 620. Filter mechanism; 621. Water outlet connection 622. Head; 623. Rotating support; 624. Filter screen support; 625. Motor mounting part; 631. Filter screen; 632. First bearing; 641. Second bearing; 642. First seal; 643. Second seal; 644. Third seal; 650. Filter chamber flange; 651. Connecting part; 652. Insertion part; 653. Through port; 660. Drive mechanism; 670. Interception mechanism; 671. Blocking element; 680. Cleaning particles.

[0054] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0056] In the description of this invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0057] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0058] Example 1

[0059] like Figures 1 to 5 As shown, this embodiment provides a filtration device 600, including:

[0060] The filter chamber 610 has a water inlet 6101, a filtered water outlet 6102, and a drain outlet 6103 for discharging filtered impurities 501.

[0061] The filter mechanism 620 is rotatably installed inside the filter chamber 610 to filter the water entering the filter chamber 610.

[0062] Cleaning particles 680 are placed inside the filter chamber 610 and are used to clean the inner wall of the filter chamber 610 and the outer wall of the filter mechanism 620 by friction and collision with the water flow.

[0063] An interception mechanism 670 is located outside the filter chamber 610 and is connected to the drain port 6103. It is used to intercept the cleaning particles 680 discharged from the drain port 6103.

[0064] The filter device 600 of this embodiment can be installed in a washing machine to filter and remove lint carried in the washing water. The washing machine includes, but is not limited to, washing machines, cleaning machines, and dishwashers. This embodiment combines... Figures 1 to 5 The following explanation will be based on the example of a filter device 600 installed in a washing machine.

[0065] In this embodiment, the filtration mechanism 620 divides the interior of the filtration chamber 610 into an outer cavity and an inner cavity. The water inlet 6101 on the filtration chamber 610 communicates with the outer cavity. Water to be filtered in the washing machine's water tank 100 is transported to the water inlet 6101 and then enters the outer cavity inside the filtration chamber 610. The water in the outer cavity is filtered by the filtration mechanism 620 and then enters the inner cavity, flowing out through the filtered water outlet 6102, which communicates with the inner cavity. Filtered impurities 501 in the water cannot pass through the filtration mechanism 620 and remain in the outer cavity.

[0066] During the filtration process, the cleaning particles 680, positioned between the filter chamber 610 and the filter mechanism 620, continuously rub against the inner wall of the filter chamber 610 and the outer wall of the filter mechanism 620 as the water flows, causing the attached filter impurities 501 to detach. This prevents the deposition of filter impurities 501 and avoids the filter mechanism 620 being covered by filter impurities 501, thus affecting filtration efficiency. On the other hand, it also avoids the problem of filter impurities 501 being too thick after filtration, adhering too firmly to the inner wall of the filter chamber 610 or the outer wall of the filter mechanism 620, making it difficult to remove the filter impurities 501 when cleaning the filter device 600 later.

[0067] The filter mechanism 620 is connected to a drive mechanism 660, such as a motor, to drive the filter mechanism 620 to rotate within the filter chamber 610. When the filter device 600 needs cleaning, the drive mechanism 660 drives the filter mechanism 620 to rotate, agitating the water within the filter chamber 610. This causes the filtered impurities 501 on the outer wall of the filter mechanism 620 to be detached from the outer wall under the action of centrifugal force and the turbulent water flow, dissolving into the water within the filter chamber 610 and then being discharged from the filter chamber 610 through the drain port 6103. This achieves automatic cleaning of the filter device 600 without manual operation by the user, making it convenient to use.

[0068] During the above process, the cleaning particles 680 move within the filter chamber 610 under the influence of the turbulent water flow, rubbing against the inner wall of the filter chamber 610 and the outer wall of the filter mechanism 620. This improves the removal efficiency of the filtered impurities 501, resulting in better self-cleaning of the filter device 600. When the filtered impurities 501 are discharged, the cleaning particles 680 are discharged from the filter chamber 610 along with the water flow. Upon passing through the interception mechanism 670 located downstream of the drain outlet 6103, the filtered impurities 501 and the water flow can be discharged through the interception mechanism 670, while the cleaning particles 680 are intercepted and collected. Thus, when water is fed into the filter chamber 610 for filtration again, the cleaning particles 680 can return to the filter chamber 610, achieving the reuse of the cleaning particles 680.

[0069] In this embodiment, the shape of the cleaning particles 680 includes, but is not limited to, spherical, ellipsoidal, and elliptical cylindrical shapes. The surface of the cleaning particles 680 can be smooth or non-smooth. Preferably, the cleaning particles 680 have non-smooth surfaces, which can increase the friction between them and the inner wall of the filter chamber 610 and the outer wall of the filter mechanism 620, resulting in a better effect in removing filtered impurities 501.

[0070] The cleaning particles 680 are preferably made of a wear-resistant elastic material to prevent them from easily wearing out during use. The resilience of the cleaning particles 680 is preferably 0% to 50%, and they are made of an elastic material that is easy to deform under stress to prevent the filter mechanism 620 from getting stuck with the cleaning particles 680 during rotation, or even causing damage to the filter device 600.

[0071] Even better, the cleaning particles 680 are made of wear-resistant, elastic, and antibacterial materials, such as copper ions and silver ions, which can also play a certain bactericidal role in the filtered water during the filtration process.

[0072] In a further embodiment, the interception mechanism 670 includes a particle collection chamber having an inlet end communicating with a drain outlet 6103 and an outlet end for discharging wastewater carrying filtered impurities 501. A blocking member 671 is provided in the particle collection chamber to prevent cleaning particles 680 from being discharged from the outlet end.

[0073] Furthermore, the blocking member 671 is a baffle, the distance between the baffle and the inner wall of the particle collection chamber is D, the width of the cleaning particles 680 is d, and D < d.

[0074] In the above scheme, for spherical cleaning particles 680, the width d is the diameter of the cleaning particle 680. For cleaning particles 680 of other shapes, since the size of the cleaning particles 680 is different in different directions, the smallest size among multiple different sizes is the width d, thereby ensuring that the cleaning particles 680 cannot pass through the gap between the baffle and the particle collection chamber no matter how they change direction, thus ensuring the effective interception of the cleaning particles 680 by the interception mechanism 670.

[0075] In a preferred embodiment, the baffle is positioned perpendicular to the flow direction of the water in the particle collection chamber. The cleaning particles 680 move under the influence of the water flow, and their direction of movement is essentially the same as the water flow direction. The baffle, being perpendicular to the direction of movement of the cleaning particles 680, provides better blocking and interception. If the baffle is tilted at a certain angle, due to the elasticity of the cleaning particles 680, there is a possibility that the particles may deform at the gap at the lower end of the baffle and pass through the gap, resulting in the loss of the cleaning particles 680.

[0076] Furthermore, the diameter of the drain outlet 6103 and the diameter of the inlet of the particle collection chamber are larger than the width d of the cleaning particles 680. The drain outlet 6103 and the inlet of the particle collection chamber are connected by a pipeline, the diameter of which is also larger than the width d of the cleaning particles 680. This ensures that the cleaning particles 680 can smoothly enter the particle collection chamber and avoids blockage between the drain outlet 6103 and the particle collection chamber.

[0077] In this embodiment, the interception mechanism 670 is positioned below the drain outlet 6103 of the filter device 600, and the density of the cleaning particles 680 is less than the density of water. During the next filtration, water entering from the inlet 6101 of the filter chamber 610 fills the interception mechanism 670 and the pipeline between it and the drain outlet 6103. The cleaning particles 680 can then float in the water, leave the interception mechanism 670, and return to the filter chamber 610 through the drain outlet 6103.

[0078] In the above scheme, the cleaning particles 680 intercepted and collected by the interception mechanism 670 can automatically return to the filter chamber 610 during the next water inlet filtration, thereby assisting in cleaning the filter impurities 501 inside the filter chamber 610 during and after filtration. The cleaning particles 680 can be reused autonomously without user operation, making it more convenient to use.

[0079] In a preferred embodiment, the density of the cleaning particles 680 is 0.3 to 0.9 times that of water, preferably 0.4 to 0.6 times, so that the cleaning particles 680 can quickly float back from the bottom to the surface, thereby ensuring that the cleaning particles 680 can quickly return from the interception mechanism 670 to the filter chamber 610.

[0080] Furthermore, the water inlet 6101 of the filter chamber 610 is located at the top, and the drain outlet 6103 is located at the bottom. The filtered impurities 501 sink due to gravity. By placing the drain outlet 6103 at the bottom of the filter chamber 610, it is more conducive to the discharge of the filtered impurities 501 from the drain outlet 6103, thereby making it easier to ensure the full removal of the filtered impurities 501.

[0081] The diameter of the inlet 6101 is smaller than the width d of the cleaning particles 680, preventing the cleaning particles 680 from passing through the inlet 6101. This confines the cleaning particles 680 to the filter chamber 610 and the interception mechanism 670. When the filter chamber 610 is filled with water, it prevents the cleaning particles 680 from floating up under buoyancy and moving outside the filter chamber 6101 through the inlet 6101.

[0082] This embodiment also provides a washing machine having the above-described filter device 600, comprising:

[0083] Water container 100;

[0084] The circulating filter pipeline has its inlet and outlet connected to the water tank 100, and a filter device 600 is installed on it.

[0085] Specifically, a circulation pump 400 is installed between the water inlet of the circulating filter pipe and the water inlet 6101 of the filter device 600. When the circulation pump 400 is turned on, water in the water tank 100 is drawn into the circulating filter pipe, flows along the circulating filter pipe, and is filtered by the filter device 600. The filtered water then returns to the water tank 100. During the washing / rinsing process of the washing machine, the water in the water tank 100 is continuously driven by the circulation pump 400 to pass through the filter device 600, which can reduce the lint content in the water in the water tank 100 and improve the washing effect.

[0086] In this embodiment, the filter device 600 is installed horizontally in the washing machine, that is, the axial direction of the filter mechanism 620 is parallel to the horizontal direction.

[0087] In a further embodiment, a T-junction is provided between the outlet of the circulation pump 400 and the outlet of the circulation filter pipe, the T-junction being connected to the external drain pipe 250 for draining water to the outside of the washing machine. The filter device 600 is disposed between the T-junction and the outlet of the circulation filter pipe.

[0088] Furthermore, the three-way structure is a switching device 270 that controls the connection between the filter device 600 and the external discharge pipe 250 and the outlet end of the circulation pump 400, comprising:

[0089] The inlet is connected to the outlet of the circulating pump 400;

[0090] The first water outlet is connected to the filter device 600;

[0091] The second outlet is connected to the external drainage pipe 250.

[0092] The switching mechanism controls the first and second water outlets to connect with the water inlet.

[0093] Specifically, the circulating filtration pipeline includes:

[0094] The drain pipe 260 of the water tank connects the water tank 100 to the inlet of the circulating pump 400;

[0095] The drain pipe 210 is connected at one end to the outlet of the circulating pump 400 and at the other end to the inlet of the switching device 270.

[0096] The circulation pipeline 220 is connected at one end to the first outlet of the switching device 270 and at the other end to the inlet 6101 of the filter device 600.

[0097] The return water pipe 230 is connected at one end to the filtered water outlet 6102 of the filter device 600 and at the other end to the water tank 100, so as to transport the filtered water to the water tank 100.

[0098] The inlet of the external drain pipe 250 is connected to the second outlet of the switching device 270, and the outlet extends to the outside of the washing machine.

[0099] In detail, the filter device 600 is located above the water tank 100, and the circulation pipe 220 and the return water pipe 230 are also located above the water tank 100. The outlet end of the return water pipe 230 is connected to the window gasket 110, thereby achieving communication with the water tank 100. The circulation pump 400 is located below the water tank 100 and is connected to the water tank 100 through the water tank drain pipe 260. Under the action of the circulation pump 400, the water in the water tank 100 is pumped out and transported from bottom to top along the drain pipe 210 to the switching device 270.

[0100] In the above scheme, by setting the switching device 270, either the filter device 600 or the external discharge pipe 250 is selectively connected to the circulation pump 400. For example... Figure 1 As shown, at this time, the switching mechanism connects the inlet and the first outlet, that is, the circulation pump 400 and the filter device 600 are connected. Under the action of the circulation pump 400, the water in the water tank 100 flows along the circulation filter pipeline and is filtered by the filter device 600. Figure 4 As shown, at this time, the switching mechanism connects the water inlet and the second water outlet, that is, the circulation pump 400 is connected to the external drain pipe 250. Under the action of the circulation pump 400, the washing water in the water tank 100 is drawn out through the water tank drain pipe 260, and then through the drain pipe 210, and finally delivered to the external drain pipe 250 to be discharged from the washing machine.

[0101] With the above configuration, the washing machine does not need two independent water paths for circulating, filtering, and draining the washing water, nor does it require separate drain and circulation pumps. By simply switching the connection between the pipes using the switching device 270, both draining and circulating / filtering the washing water can be achieved using a single circulation pump 400. This simplifies the internal piping structure of the washing machine, saves space occupied by the piping, and reduces production costs by using only one circulation pump 400.

[0102] In this embodiment, a return water inlet can also be opened on the wall of the water container, and the outlet end of the return water pipe is connected to the return water inlet to directly return water to the water container.

[0103] The washing machine in this embodiment also includes a main water inlet pipe for connecting an external water source to a water tank. The outlet of the return water pipe can also be connected to the main water inlet pipe, for example, to a detergent dispenser located on the main water inlet pipe. The filtered water returns to the water tank through the detergent dispenser.

[0104] In a further embodiment, the washing machine further includes a recycling device 500, which is connected to the outlet end of the interception mechanism 670 and is used to collect the discharged filter impurities 501.

[0105] In the above solution, a recycling device 500 collects the filtered impurities 501 discharged after the filter device 600 self-cleansing, preventing the filtered impurities 501 from entering the drain water and being discharged from the washing machine with it. This method avoids the fine lint in the filtered impurities 501 being carried away by the water flow and entering the ecological cycle, thus preventing harm to the ecological environment and human health.

[0106] Preferably, the outlet end of the interception mechanism 670 is connected to the recycling device 500 through a sewage pipe 240, and a sewage control valve 241 is provided on the sewage pipe 240 to control the opening and closing of the sewage pipe 240.

[0107] Meanwhile, a return water control valve 231 is installed between the filter device 600 and the outlet end of the circulating filter pipeline, that is, on the return water pipeline 230, to control the opening and closing of the return water pipeline 230, thereby realizing the control of the opening and closing of the circulating filter pipeline.

[0108] In the above scheme, when the washing water in the water tank 100 is circulated and filtered, the return water control valve 231 opens to connect the return water pipe 230, and the drain control valve 241 closes to cut off the drain pipe 240. Under the action of the circulation pump 400, the washing water passes sequentially through the water tank drain pipe 260, drain pipe 210, circulation pipe 220, and filter device 600, and finally returns to the water tank 100 through the return water pipe 230. When it is necessary to remove the filter impurities 501 remaining in the filter device 600, the return water control valve 231 closes to cut off the return water pipe 230, and the washing water cannot flow out from the filter water outlet 6102. At the same time, the drain control valve 241 opens to connect the drain pipe 240, which can ensure that all the water entering the filter device 600 flows out from the drain port 6103, and fully remove the filter impurities 501 from the filter device 600.

[0109] In the specific implementation of this embodiment, the recycling device 500 includes:

[0110] The housing 510 has a recovery chamber inside;

[0111] A filter assembly 520 is disposed in the recovery chamber, dividing the recovery chamber into a first chamber 531 and a second chamber 532.

[0112] The outlet end of the interceptor 670 is connected to the first chamber 531. Wastewater carrying filtered impurities 501 enters the first chamber 531, is filtered by the filter assembly 520, and then enters the second chamber 532. The filtered impurities 501 are collected in the first chamber 531.

[0113] Specifically, the filter assembly 520 can be a frame horizontally positioned at a certain height within the recovery chamber and a filter screen laid on the frame. After the wastewater carrying the filtered impurities 501 enters the first chamber 531, the water can pass through the filter assembly 520 into the second chamber 532. The filtered impurities 501 are blocked by the filter screen and remain on the upper surface of the filter assembly 520.

[0114] In the above scheme, the recycling device 500 is equipped with a filter assembly 520 for filtering the received wastewater and separating the filter impurities 501 from the water. The filter assembly 520 divides the interior of the recycling device 500 into a first chamber 531 and a second chamber 532. The filter impurities 501 in the wastewater are blocked by the filter assembly 520, thereby collecting the filter impurities 501 on the upper surface of the filter assembly 520 in the first chamber 531. The filtered clean water is collected in the second chamber 532. The user can directly collect and process the separated filter impurities 501, avoiding the situation where the filter impurities 501 are dispersed in the water and difficult to process.

[0115] In this embodiment, the washing machine also includes a cabinet 10, a water tank 100, and a filter device 600, all of which are disposed inside the cabinet 10. A removable housing 510 is mounted on the cabinet 10, allowing the user to remove the recycling device 500 from the cabinet 10 for cleaning.

[0116] Specifically, the upper side of the housing 510 has an opening, allowing the user to clean the filter impurities 501 adhering to the upper surface of the filter assembly 520 by pulling the housing 510 out of the housing 10. Preferably, the filter assembly 520 is detachably connected to the housing 510, allowing the user to remove the filter assembly 520 from inside the housing 510 for cleaning, making the operation more convenient.

[0117] In a preferred embodiment, a water outlet is provided on the second chamber 532 for discharging filtered clean water. By providing a water outlet on the second chamber 532, the clean water entering the second chamber 532 can be promptly discharged from the recovery device 500, preventing overflow of the recovery device 500 when a large amount of wastewater is discharged from the filtration device 600. Otherwise, the capacity of the second chamber 532 would need to be increased, which would require a larger volume of the recovery device 500, resulting in it occupying a large space inside the washing machine and hindering the miniaturization of the overall washing machine size.

[0118] On the other hand, the water in the second chamber 532 can be automatically discharged from the outlet. When cleaning the recycling device 500, the user only needs to clean the filter impurities 501 on the filter assembly 520, without having to manually pour out the clean water in the second chamber 532. When the filter assembly 520 is detachably installed in the housing 510, the user does not even need to completely remove the housing 510 from the washing machine's cabinet 10; they only need to remove the filter assembly 520 for cleaning, making operation more convenient.

[0119] In this embodiment, the washing machine performs a circulating filtration operation, a self-cleaning operation, and a sewage discharge operation during the washing program.

[0120] Specifically, such as Figure 1 and Figure 2 As shown, the circulating filtration operation includes: closing the drain control valve 241 and simultaneously opening the return water control valve 231 to connect the return water pipeline 230; starting the circulating pump 400 to introduce water from the water tank 100 into the circulating filtration pipeline, where it passes through the filtration device 600 to remove impurities, and then returns to the water tank 100. During this process, the cleaning particles 680 move with the water flow in the filter chamber 610, continuously rubbing against the inner wall of the filter chamber 610 and the outer wall of the filter mechanism 620, preventing the deposition of impurities.

[0121] like Figure 3 As shown, the self-cleaning operation includes: closing the return water control valve 231, opening the drain control valve 241 to connect the drain pipe 240, starting the circulation pump 400, introducing water from the water tank 100 into the filter device 600, cleaning the filter device 600, and then discharging it into the recovery device 500. It also includes: controlling the drive mechanism 660 to drive the filter mechanism 620 to rotate within the filter chamber 610. During this process, the cleaning particles 680 move with the water flow, rubbing against the inner wall of the filter chamber 610 and the outer wall of the filter mechanism 620, assisting in the removal of impurities.

[0122] like Figure 4 and Figure 5 As shown, the sewage discharge operation includes: opening the sewage control valve 241 to connect the sewage discharge pipe 240, discharging the sewage carrying the filtered impurities 501 from the filter device 600 into the recovery device 500. During the sewage discharge operation, the drive mechanism 660 can be activated to rotate the filter mechanism 620, or the drive mechanism 660 can be deactivated, keeping the filter mechanism 620 stationary within the filter chamber 610. In this process, the cleaning particles 680 are discharged from the filter chamber 610 along with the sewage. When passing through the interception mechanism 670, the water flow and the carried filtered impurities 501 can pass through and enter the recovery device 500 along the sewage discharge pipe 240. The cleaning particles 680 are intercepted by the blocking member 671 and collected in the particle collection chamber.

[0123] In this embodiment, the cyclic filtration operation is performed during the washing phase and one or more rinsing phases of the washing program, and the self-cleaning operation and / or sewage discharge operation are performed at least once in a complete washing program. Preferably, the self-cleaning operation and sewage discharge operation are performed at the end of the washing phase and each rinsing phase.

[0124] Specifically, after a certain period of water intake during the washing and rinsing stages, the circulation pump 400 is activated to begin the circulation filtration operation. This circulation filtration operation continues until the washing or rinsing stage is nearing completion and drainage is imminent. At this point, the return water control valve 231 is closed, the drain control valve 241 is opened, and the drive mechanism 660 is activated to perform a self-cleaning operation. After the self-cleaning operation continues for a certain period, the washing machine then performs a drain operation.

[0125] In detail, after the washing machine starts filling with water, it detects the water level in the water tank 100. When the water level reaches the preset level, the circulation pump 400 is turned on to begin the circulation and filtration operation. This prevents the circulation pump 400 from drawing in air and generating operating noise if the water level in the water tank 100 is too low. While the washing machine is performing the sewage discharge operation, it also controls the switching device 270 to connect the drain pipe 210 and the external drain pipe 250, allowing the circulation pump 400 to continue running and drain the remaining water from the water tank 100.

[0126] In this embodiment, the washing machine is equipped with a filter device 600, which circulates and filters the water in the water tank 100 during washing machine operation, reducing the content of lint in the water and improving the washing effect. The filter device 600 is self-cleaning, thereby discharging the filter impurities 501 remaining inside the filter device 600 without requiring the user to remove the filter device 600 from the washing machine for manual cleaning, making it convenient to use. The filter device 600 contains cleaning particles 680, which can move with the water flow to prevent the accumulation of filter impurities 501 inside the filter chamber 610, thereby improving the cleaning efficiency of filter impurities 501. An interception mechanism 670 is provided outside the filter chamber 610. The cleaning particles 680 are discharged from the filter chamber 610 with the wastewater and are intercepted and collected when passing through the interception mechanism 670, so that they can be returned to the filter chamber 610 for reuse in the next filtration, while avoiding the accumulation of cleaning particles 680 inside the filter chamber 610 and affecting the wastewater discharge efficiency.

[0127] Example 2

[0128] This embodiment provides a washing machine, which differs from the first embodiment above in that the filter device is installed vertically in the washing machine, that is, the filter mechanism is set vertically in the axial direction.

[0129] Specifically, the water outlet on the filter chamber is vertically downward, and the inlet and outlet face opposite directions and are both parallel to the horizontal. Preferably, the inlet is positioned higher than the outlet to fully discharge any remaining filter impurities from the filter, preventing bacterial growth and contamination of the washing water.

[0130] In this embodiment, the other structures and control methods of the washing machine are the same as in Embodiment 1, and have similar effects as in Embodiment 1.

[0131] Example 3

[0132] like Figure 6 and Figure 7 As shown, this embodiment is a further limitation of the filter device 600 in the first embodiment above. The outer periphery of the filtered water outlet 6102 extends outward from the filter cavity 610 to form a sealing support part 611.

[0133] The filter mechanism 620 has a rotatable water outlet connector 621 inserted into the sealing support part 611, and a first bearing 631 is sleeved on the water outlet connector 621. A first seal 641 is provided on the side of the first bearing 631 facing the inside of the filter chamber 610, and the first seal 641 seals the gap between the water outlet connector 621 and the sealing support part 611.

[0134] In the above scheme, a first bearing 631 is provided between the water outlet connector 621 and the sealing support part 611 to support the water outlet connector 621, making the rotation of the water outlet connector 621 within the sealing support part 611 smoother and ensuring structural stability, thus guaranteeing the stable rotation of the filter mechanism 620 within the filter chamber 610. A first seal 641 is provided on the right side of the first bearing 631, preventing washing water in the filter chamber 610 from entering the gap between the water outlet connector 621 and the sealing support part 611, preventing the first bearing 631 from contacting water, avoiding failure of the first bearing 631, and ensuring the effective functioning of the first bearing 631. At the same time, the first seal 641 also prevents unfiltered washing water from flowing out of the filtered water outlet 6102 through the sealing support part 611, which would affect the removal efficiency of the filter device 600 for lint and other filter impurities.

[0135] In the specific embodiment, the first sealing member 641 is sleeved on the water outlet connector 621, the inner wall of the first sealing member 641 is sealed to the outer wall of the water outlet connector 621, and the outer wall of the first sealing member 641 is rotatably sealed to the inner wall of the sealing support part 611.

[0136] In a further embodiment, the filter device 600 further includes a second seal 642, which is disposed on the side of the first bearing 631 facing away from the inside of the filter cavity 610, and blocks the gap between the water outlet connector 621 and the sealing support 611.

[0137] Specifically, the second sealing element 642 is sleeved on the water outlet connector 621, the inner wall of the second sealing element 642 is sealed to the outer wall of the water outlet connector 621, and the outer wall of the second sealing element 642 is rotatably sealed to the inner wall of the sealing support part 611.

[0138] In the above design, a second seal 642 is also provided on the left side of the first bearing 631. Water flowing out through the water outlet 621 can be blocked by the second seal 642 and will not come into contact with the first bearing 631. The first bearing 631 is located between the first seal 641 and the second seal 642, which ensures that the installation environment of the first bearing 631 is water-free to the greatest extent, avoiding rusting of the first bearing 631 when it comes into contact with water, and preventing it from affecting the smooth rotation of the filter mechanism 620.

[0139] In a further embodiment, the inner wall of the sealing support 611 has a stepped structure, and a first limiting surface 601, a second limiting surface 602, and a third limiting surface 603 with an annular structure and gradually decreasing inner diameter are formed sequentially from one end of the sealing support 611 to the outside of the filter cavity 610.

[0140] The surface of the first seal 641 facing the outside of the filter cavity 610 abuts against the first limiting surface 601, the surface of the first bearing 631 facing the outside of the filter cavity 610 abuts against the second limiting surface 602, and the surface of the second seal 642 facing the outside of the filter cavity 610 abuts against the third limiting surface 603.

[0141] In the above scheme, multiple vertical annular limiting surfaces are formed on the inner wall of the stepped sealing support 611, which respectively abut against the left side surfaces of the first seal 641, the first bearing 631 and the second seal 642. This restricts the movement of the above three components in the axial direction of the water outlet connector 621 and prevents the mating structure between the water outlet connector 621 and the sealing support 611 from loosening during the rotation of the filter mechanism 620.

[0142] In a preferred embodiment, the outer diameter of the end of the water outlet connector 621 near the outside of the filter chamber 610 is smaller than the outer diameter of the other end. A fourth limiting surface 604 with an annular structure and perpendicular to the axis of the water outlet connector 621 is formed on the outer wall of the water outlet connector 621. The surface of the first bearing 631 facing the inside of the filter chamber 610 abuts against the fourth limiting surface 604.

[0143] By setting the outer diameter of the left end of the water outlet connector 621 to be smaller than that of the right end, a fourth limiting surface 604 facing to the left is formed at the abrupt change in outer diameter, which abuts against the right side surface of the first bearing 631. In this way, the first bearing 631 has limiting structures on both sides, making the structure more stable.

[0144] In this embodiment, the end of the sealing support 611 away from the filter chamber 610, that is, the left end of the sealing support 611, is connected to the filter chamber flange 650. The filter chamber flange 650 has a through-hole 653 in the middle that communicates with the water outlet connector 621. The outer periphery of the through-hole 653 extends away from the sealing support 611 to form a connecting part 651.

[0145] Preferably, the surface of the filter chamber flange 650 facing the sealing support 611 has a protruding insertion portion 652, which is inserted into the opening at the left end of the sealing support 611.

[0146] In the above solution, the left end of the sealing support 611 is connected to the filter chamber flange 650, and a connecting part 651 is formed on the filter chamber flange 650. The outer diameter of the connecting part 651 is smaller than the outer diameter of the sealing support 611, and the inner diameter of the connecting part 651 is preferably equal to the inner diameter of the water outlet connector 621. When the filter device 600 is installed in the washing machine, it is connected to the return water pipe through the connecting part 651. Compared with the method of directly connecting the return water pipe to the left end of the sealing support 611, the installation is easier.

[0147] The filter chamber flange 650 has a plug-in portion 652 on the right side, which is inserted into the left end opening of the sealing support portion 611, facilitating the positioning of the filter chamber flange 650 and the sealing support portion 611 during assembly. Several fixing portions are respectively provided on the outer periphery of the filter chamber flange 650 and the sealing support portion 611, and the filter chamber flange 650 and the sealing support portion 611 are fixed by screws passing through the fixing portions.

[0148] In a further embodiment, the outer wall of the sealing support 611 is provided with a reinforcing rib 613 extending radially along the sealing support 611, and the reinforcing rib 613 is connected to the surface of the filter water outlet 6102 on the filter chamber 610.

[0149] Since the sealing support 611 extends a certain length from the left end face of the filter chamber 610, the reinforcing rib 613 provides external support to its peripheral sidewall, ensuring the strength of the sealing support 611.

[0150] In this embodiment, the filtration mechanism 620 includes a filter support and a filter 625. The filter support specifically includes:

[0151] The filter support 623 is located inside the filter chamber 610, and the filter 625 covers the surface of the filter support 623.

[0152] The water outlet connector 621 is located at the left end of the filter screen support 623 and is rotatably inserted into the sealing support 611.

[0153] The rotating support part 622 is located at the right end of the filter support part 623 and is rotatably connected to the filter chamber 610.

[0154] In a further embodiment, the rotating support portion 622 at the right end of the filter mechanism 620 extends outward from the filter cavity 610 along its rotation axis, and the filter cavity 610 is provided with a mounting port 6104 through which the rotating support portion 622 passes. The rotating support portion 622 and the mounting port 6104 are rotatably and sealingly connected.

[0155] The rotating support part 622 is used to connect the drive mechanism that drives the filter mechanism 620 to rotate. The rotating support part 622 extends from the right end of the filter chamber 610, and a motor mounting part 624 is provided at the right end of the rotating support part 622 for connecting with the drive mechanism. This allows the drive mechanism to be placed outside the filter chamber 610 to avoid contact with water.

[0156] Furthermore, the outer periphery of the mounting port 6104 extends outward from the filter cavity 610 along the axis of the rotating support portion 622 to form a sleeve portion 612, and a third sealing member 643 is fitted onto the rotating support portion 622. The inner wall of the third sealing member 643 is sealed to the outer wall of the rotating support portion 622, and the outer wall of the third sealing member 643 is rotatably sealed to the inner wall of the sleeve portion 612.

[0157] A second bearing 632 is also provided between the sleeve portion 612 and the rotating support portion 622. The second bearing 632 is sleeved on the rotating support portion 622 and is located on the side of the third seal 643 facing the outside of the filter chamber 610.

[0158] In the above design, the third seal 643 prevents water in the filter chamber 610 from leaking out of the mounting port 6104, and the second bearing 632 supports the rotating support 622, ensuring smoother relative rotation between the rotating support 622 and the sleeve 612. The second bearing 632 is located on the right side of the third seal 643, preventing contact with water in the filter chamber 610 and thus avoiding failure.

[0159] In a preferred embodiment, the inner diameter of the sleeve portion 612 near the outside of the filter chamber 610 is smaller than the inner diameter of the other end. A fifth limiting surface 605 with an annular structure is formed on the inner wall of the sleeve portion 612 and is perpendicular to the axis of the rotating support portion 622. The surface of the third sealing member 643 facing the outside of the filter chamber 610 abuts against the fifth limiting surface 605.

[0160] The outer diameter of the rotating support 622 near the outside of the filter chamber 610 is smaller than that of the other end. A sixth limiting surface 606 with an annular structure and perpendicular to the axis of the rotating support 622 is formed on the outer wall of the rotating support 622. The surface of the second bearing 632 facing the inside of the filter chamber 610 abuts against the sixth limiting surface 606.

[0161] In the above design, the inner diameter of the right end of the sleeve portion 612 is smaller than that of the left end, and a fifth limiting surface 605 facing left is formed at the abrupt change in its inner diameter, abutting against the right side surface of the third seal 643. The outer diameter of the right end of the rotating support portion 622 is smaller than that of the left end, and a sixth limiting surface 606 facing right is formed at the abrupt change in its outer diameter, abutting against the left side surface of the second bearing 632. This structure restricts the axial movement of the third seal 643 and the second bearing 632 in the rotating support portion 622, resulting in structural stability.

[0162] In this embodiment, the first seal 641, the second seal 642, and the third seal 643 are all oil seals, and the right wall of the filter cavity 610 is separately disposed from its peripheral sidewall. First, the filter mechanism 620, along with the first seal 641, the second seal 642, and the first bearing 631 on its left end, are installed as a whole into the filter cavity 610. Then, the third seal 643 and the second bearing 632 are installed on its right end. Finally, the right wall of the filter cavity 610 is fastened to its peripheral sidewall.

[0163] In this embodiment, the cross-sectional area of ​​the middle region of the filter support 623 is fixed, and its left and right ends have tapered structures, so that the local surface of the filter 625 is tilted, which is conducive to the shedding of attached lint.

[0164] In this embodiment, the water inlet 6101 and the drain outlet 6103 of the filter device 600 are both perpendicular to the axis of the filter mechanism 620.

[0165] Preferably, the filter chamber 610 has a columnar structure, with the water inlet 6101 located near the right end of the filter chamber 610 and the sewage outlet 6103 located near the left end of the filter chamber 610.

[0166] In the above design, the inlet 6101 is positioned as far away from the outlet 621 as possible to fully utilize the area of ​​the filter screen 625. The inlet 6101 and the outlet 6103 are arranged vertically and staggered axially within the filter chamber 610, facilitating the full discharge of wastewater after cleaning the filter device 600 within the filter chamber 610. Simultaneously, the staggered arrangement of the inlet 6101 and outlet 6103 creates an axial water flow within the filter chamber 610, which also helps to move the cleaning particles 680 within the filter chamber 610 within its axial range, thereby thoroughly cleaning the filter impurities adhering to the inside of the filter chamber 610.

[0167] In this embodiment, the filter mechanism 620 is supported at both ends by a first bearing 631 and a second bearing 632, respectively, ensuring smooth and stable rotation of the filter mechanism 620 within the filter cavity 610. Simultaneously, the placement of the first seal 641, the second seal 642, and the third seal 643 maximizes the protection of the first bearing 631 and the second bearing 632 within a water-free environment, preventing contact with water and thus avoiding their failure.

[0168] Example 4

[0169] like Figure 1 and Figure 2 As shown, this embodiment provides a control method for a washing machine as described in Embodiment 1 above, used to fully discharge sewage from the filter device 600.

[0170] Specifically, the control method includes:

[0171] Turn on the circulation pump 400, open the circulation filter pipe, and the washing machine will perform circulation filtration and rinsing.

[0172] After rinsing is complete, turn off the circulation pump at 400.

[0173] Turn on the drive mechanism 660 to drive the filter mechanism 620 to rotate inside the filter chamber 610;

[0174] When the first set condition is met, start the circulation pump 400 and at the same time open the sewage control valve 241 to open the sewage pipe 240.

[0175] Once the second set condition is met, the circulating filter pipeline will be shut off.

[0176] Preferably, after the first set condition is met, the drive mechanism 660 remains open, driving the filter mechanism 620 to rotate continuously.

[0177] In this embodiment, the circulating filtration pipeline includes: a switching device 270 connecting the outlet of the filtration device 600 and the circulating pump 400, and opening the return water control valve 231 to connect the return water pipeline 230. The circulating filtration pipeline is cut off by: the switching device 270 connecting the external discharge pipeline 250 and the outlet of the circulating pump 400.

[0178] It is understandable that the aforementioned disconnection of the circulating filter pipeline can also be achieved by shutting down the circulating pump 400.

[0179] In the above scheme, the washing machine circulates and filters the rinsing water during the rinsing process, and the filtration device 600 and the circulating filtration pipeline are always filled with rinsing water.

[0180] After rinsing is completed and the circulation pump 400 is turned off, the water in the drain pipe 210 and the circulation pipe 220 flows back downwards under gravity, up to a point where the water level in the drain pipe 210 is level with the water level in the water tank 100. The pipes above the water level up to the filter device 600 are filled with air. However, the filter device 600 is lower than the circulation pipe 220, so the water in it will not flow back through the circulation pipe 220. Turning off the circulation pump 400 also closes the return water control valve 231, and at this time, the drain control valve 241 is closed. The water inside the filter device 600 remains in the filter chamber 610 and will not be discharged.

[0181] After the drive mechanism 660 is activated, it drives the filter mechanism 620 to rotate at high speed, causing the lint and other filter impurities attached to the surface to peel off from the surface of the filter mechanism 620 under centrifugal force. At this time, since both the return water control valve 231 and the drain control valve 241 are closed, the water in the filter chamber 610 does not flow out. The high-speed rotating filter mechanism 620 can also agitate the water flow in the filter chamber 610, and the resulting turbulent water flow exerts a certain impact force on the surface of the filter mechanism 620, which can also cause the lint to fall off. The lint and other filter impurities peeled off from the surface of the filter mechanism 620 are absorbed into the water in the filter chamber 610.

[0182] Simultaneously with starting the circulation pump 400, the drain control valve 241 is also opened, opening the drain pipe 240 and allowing wastewater in the filter device 600 to be discharged from the drain port 6103. The activation of the circulation pump 400 forces air from the drain pipe 210 and circulation pipe 220 into the filter device 600, thereby completely discharging the wastewater carrying lint from the filter device 600 through the drain port 6103 under air pressure, preventing wastewater residue in the filter device 600 and ensuring effective cleaning. The drain control valve 241 opens simultaneously with the circulation pump 400, ensuring the pressure generated when air enters the filter device 600, thus guaranteeing the full discharge of wastewater from the filter device 600.

[0183] To prevent water from the water tank 100 from re-entering the filter device 600 through the circulation pipe 220 after the wastewater in the filter device 600 has been drained, the washing machine has a preset second setting condition. When the second setting condition is met, the circulation filter pipe is cut off, and the water in the water tank 100 is stopped from being transported to the filter device 600.

[0184] In the specific scheme of this embodiment, the first setting condition can be that the circulation pump 400 is turned off for a first set time t1, and the second setting condition can be that the circulation pump 400 is turned on for a second set time t2.

[0185] In the above scheme, the specific values ​​of the first set time t1 and the second set time t2 can be obtained in advance through a large number of experiments and directly written into the control program of the washing machine.

[0186] Specifically, the value of the first set time t1 is approximately the maximum duration required for the water level in the drain pipe 210 to start to decline until it stops, and the value of the second set time t2 is approximately the shortest duration required for the water level in the drain pipe 210 to rise close to the top of the drain pipe 210 after the circulation pump 400 is turned on. In this way, it can be ensured that during the period when the circulation pump 400 is turned off, a larger amount of air can enter the pipeline, and at the same time, it can effectively avoid the situation where water enters the filtering device 600 after the circulation pump 400 is turned on.

[0187] In another solution of this embodiment, the water level height can also be used as the first set condition and the second set condition. Specifically, the first set condition is that the water level in the pipeline between the circulation pump 400 and the filtering device 600 reaches the first set value H1. The second set condition is that the water level in the pipeline between the circulation pump 400 and the filtering device 600 reaches the second set value H2. Among them, H1 < H2.

[0188] In this embodiment, the above-mentioned water level is specifically the water level height in the drain pipe 210. A water level detection device can be set in the drain pipe 210 of the washing machine to detect the water level in the drain pipe 210.

[0189] In the above solution, the value of the first set value H1 is greater than and as close as possible to the highest water level height of the washing machine to ensure that after the circulation pump 400 is turned off, the water level in the drain pipe 210 can drop to reach the first set value H1.

[0190] From the time when the washing machine receives the signal that the water level in the drain pipe 210 rises to the second set value H2 until the switching device 270 conducts between the drain pipe 210 and the external drain pipe 250, there is generally a certain time difference. To avoid water entering the filtering device 600 after the circulation pump 40 is turned on due to response delay, a certain difference ΔH needs to be set between the value of the second set value H2 and the water level height corresponding to the top of the drain pipe 210. The specific value of the difference ΔH can be obtained through a large number of pre-experiments, so as to ensure that after the washing machine receives the signal that the water level reaches the second set value H2, there is enough response time to control the switching device 270 to complete the switching of the water circuit.

[0191] In a further solution of this embodiment, if the washing machine determines that the current running process is the last rinsing stage in this washing program, then after the rinsing is completed, the circulation pump 400 is turned off, and the circulation pump 400 is turned on after the first set condition is reached.

[0192] If the washing machine determines that the current running process is not the last rinsing stage in this washing program, then the following operations are performed after the rinsing is completed:

[0193] The circulation pump 400 remains in the running state;

[0194] Once the third set condition is met, the circulating filter pipeline will be shut off.

[0195] In the above scheme, during the intermediate rinsing stage, since the washing machine will continue to run afterward, that is, the rinsing water will circulate through the filter device 600 for filtration. At this time, it is not necessary to drain the wastewater carrying lint from the filter device 600. It is only necessary to remove the lint attached to the surface of the filter mechanism 620.

[0196] After rinsing, the return water control valve 231 is closed, the drain control valve 241 is opened, the circulation pump 400 remains running, and the water in the water tank 100 continues to be transported to the filter device 600 under the action of the circulation pump 400 to rinse the inside of the filter device 600. The rinsed wastewater is discharged into the drain pipe 240 through the drain outlet 6103.

[0197] In this embodiment, the third setting condition can be the completion of rinsing and the arrival of a third preset time t3. Its value is obtained in advance through experiments and written into the control program to ensure that the lint attached to the surface of the filter mechanism 620 can be basically removed.

[0198] Alternatively, when the water level in the water tank 100 drops to a preset value ΔH1, the circulation filter pipe can be cut off. That is, the control switching device 270 connects the drain pipe 210 and the external discharge pipe 250, and the circulation pump 400 continues to run, draining the remaining water in the water tank 100 from the washing machine.

[0199] In the preferred embodiment, after rinsing, the drive mechanism 660 is turned on, driving the filter mechanism 620 to rotate at high speed in the filter chamber 610. This agitates the water in the filter chamber 610, causing the attached lint to peel off from the surface of the filter mechanism 620 under the combined action of centrifugal force and turbulent water flow. The lint is then dissolved in the water in the filter chamber 610 and discharged from the filter chamber 6103. This method results in high efficiency in cleaning lint.

[0200] In this embodiment, the washing machine only performs the operation of first turning off the circulation pump 400 and then turning it on again at the end of the final rinse cycle to completely drain the wastewater from the filter device 600. At the end of the intermediate rinse cycle, the circulation pump 400 remains running, avoiding frequent turning on and off of the circulation pump 400 during washing machine operation, which would affect its service life.

[0201] In this embodiment, the washing machine also cleans the filter device 600 after the washing cycle is completed. The specific control method is as follows:

[0202] Turn on the circulation pump 400, switch the device 270 to connect the water outlet of the circulation pump 400 with the filter device 600, open the return water control valve 231, and the washing machine will perform circulation filtration and washing.

[0203] After washing is finished, the circulation pump 400 remains running, the return water control valve 231 is closed, and the drain control valve 241 is opened;

[0204] When the fourth set condition is met, the switching device 270 connects the outlet of the circulation pump 400 to the external discharge pipe 250.

[0205] The fourth setting condition can be either the completion of washing at a fourth preset time t4, or the water level in the water tank 100 dropping to a preset value ΔH2.

[0206] Since a circulating filter rinse is required in the subsequent washing process after the washing is finished, similar to the intermediate rinse, it is not necessary to completely drain the wastewater in the filter device 600. The circulation pump 400 can remain running and does not need to be turned off.

[0207] In this embodiment, after the washing and intermediate rinsing cycles are completed, the washing machine keeps the circulation pump 400 running, delivering water from the water tank 100 to the filter device 600 for rinsing. The rinsed wastewater is discharged from the drain port 6103 of the filter device 600. After the final rinse, the circulation pump 400 is first turned off, and air is allowed to enter the pipeline before the circulation pump 400 is turned on again to force the air into the filter device 600, thereby completely draining the wastewater and ensuring that there is no wastewater residue in the filter device 600 after the washing machine stops running, effectively preventing bacterial growth. Furthermore, the washing machine only performs the operation of turning the circulation pump 400 off and on again after the final rinse, reducing unnecessary on / off operations of the circulation pump 400 and extending its service life.

[0208] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A washing machine, characterized in that, It includes a water tank, and a circulating filter pipeline with an inlet and an outlet connected to the water tank. A filter device is installed on the circulating pipeline, and a circulating pump is installed between the inlet of the circulating filter pipeline and the inlet of the filter device. The filtration device includes: The filter chamber has a water inlet, a filtered water outlet, and a drain outlet to discharge filtered impurities. The filtration mechanism is rotatably installed inside the filtration chamber to filter the water entering the filtration chamber. Cleaning particles are placed inside the filter chamber and are used to clean the inner wall of the filter chamber and the outer wall of the filter mechanism by friction and collision with the water flow. An interception mechanism is installed outside the filter chamber and communicates with the drain outlet to intercept cleaning particles discharged from the drain outlet. The outlet end of the interception mechanism is connected to a sewage pipe, and a sewage control valve is provided on the sewage pipe; The circulating filtration pipeline includes a drain pipe connected to the outlet of the circulating pump and a circulating pipeline connected to the inlet of the filtration device; under the action of the circulating pump, the water in the water tank is transported from bottom to top along the drain pipe. During the rinsing process, the washing machine activates the circulation pump to perform circulating filtration and rinsing. After rinsing, the circulation pump is turned off, and the drain control valve is closed. The water in the drain pipe and circulation pipe flows downward under gravity. When the first set condition is met, the circulation pump is activated and the drain control valve is opened simultaneously. The activation of the circulation pump forces the air in the drain pipe and circulation pipe into the filter device, so that the wastewater carrying lint in the filter device is completely discharged from the drain port under air pressure. The first setting condition is that the circulation pump is shut down for a first set time t1, or the first setting condition is that the water level in the pipeline between the circulation pump and the filter device reaches a first set value H1.

2. The washing machine according to claim 1, characterized in that, The interception mechanism includes a particle collection chamber, which has an inlet end communicating with a sewage outlet and an outlet end for discharging wastewater carrying filtered impurities. A blocking element is provided in the particle collection chamber to prevent the washing particles from being discharged from the outlet end; After the circulation pump is turned on, when the second set condition is reached, the circulation filter pipeline is cut off, and the water in the water tank is stopped from being delivered to the filter device.

3. The washing machine according to claim 2, characterized in that, The blocking component is a baffle, the distance between the baffle and the inner wall of the particle collection chamber is D, the width of the cleaning particles is d, and D < d; The second setting condition is that the circulation pump is turned on for a second set time t2; or, the second setting condition is that the water level in the pipeline between the circulation pump and the filter device reaches a second set value H2, where H2 < H1.

4. The washing machine according to claim 3, characterized in that, The baffle is positioned perpendicular to the flow direction of the water in the particle collection chamber.

5. The washing machine according to claim 3, characterized in that, The diameter of the drain outlet and the diameter of the inlet of the particle collection chamber are greater than the width d of the cleaning particles.

6. The washing machine according to claim 1, characterized in that, The interception mechanism is positioned below the drain outlet of the filter device, and the density of the cleaning particles is less than the density of water. The filtration device is positioned above the water tank and below the circulation pipeline.

7. The washing machine according to claim 6, characterized in that, The density of the cleaning particles is 0.3 to 0.9 times that of water.

8. The washing machine according to claim 7, characterized in that, The density of the cleaning particles is 0.4 to 0.6 times that of water.

9. The washing machine according to claim 1, characterized in that, The outer periphery of the filtered water outlet extends outward from the filter cavity to form a sealing support portion; The filtration mechanism has a rotatable water outlet connector inserted into the sealing support, and a bearing is sleeved on the water outlet connector; a sealing element is provided on the side of the bearing facing the interior of the filtration chamber, and the sealing element seals the gap between the water outlet connector and the sealing support.

10. The washing machine according to claim 1, characterized in that, The orientation of both the water inlet and the sewage outlet is perpendicular to the axis of the filtration mechanism.

11. The washing machine according to claim 10, characterized in that, The filter chamber has a columnar structure, with the water inlet located at one end of the filter chamber and the sewage outlet located at the other end of the filter chamber.

12. The washing machine according to any one of claims 1-11, characterized in that, It also includes a recycling device, which is connected to the outlet end of the interception mechanism through a sewage pipe, for collecting the discharged filter impurities; if the washing machine determines that the current running process is the last rinsing stage in this washing program, it will turn off the circulation pump after the rinsing is completed, and turn on the circulation pump after the first set condition is met.

13. The washing machine according to claim 12, characterized in that, The recycling device includes: The shell has an internal recovery chamber; A filter assembly is disposed within the recovery chamber, dividing the recovery chamber into a first chamber and a second chamber; The outlet end of the interception mechanism is connected to the first chamber. Wastewater carrying filtered impurities enters the first chamber, is filtered by the filter assembly, and then enters the second chamber. The filtered impurities are collected in the first chamber. If the washing machine determines that the current running process is not the last rinsing stage of the current washing program, it will control the circulation pump to keep running after the rinsing is completed, and cut off the circulation filter pipeline when the third set condition is met. The third preset condition is either the rinsing process ends at a third preset time t3, or the water level in the water tank drops to a preset value ΔH1.

14. The washing machine according to claim 13, characterized in that, The second chamber is provided with a water outlet for discharging filtered clean water.

15. The washing machine according to claim 13, characterized in that, The washing machine also includes a cabinet, and the water tank and filter device are both disposed inside the cabinet; the housing is insertable / removable from the cabinet.

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