Filtering module, filtering module control method, and washing equipment

Abstract

The present invention relates to the technical field of washing equipment, and disclosed are a filtering module, a filtering module control method, and washing equipment. The filtering module comprises: a filtering device on which a drain outlet used for draining sewage carrying filtered impurities is formed; and a recovery device communicated with the drain outlet of the filtering device, wherein the recovery device is provided with at least two groups of lint collection assemblies, and the groups of lint collection assemblies mutually independently and / or jointly receive the sewage drained by the filtering device and collect the filtered impurities in the sewage. In the present invention, at least two groups of lint collection assemblies are arranged in the recovery device, and the at least two groups of lint collection assemblies are used for collecting the filtered impurities, so that the total quantity of collectible filtered impurities can be increased, thereby prolonging the use period of the recovery device after each cleaning; and the groups of lint collection assemblies can be cleaned separately, so that the use is more convenient.

Description

Filter module, filter module control method and washing equipment Technical Field

[0001] The present invention belongs to the technical field of washing equipment, and in particular relates to a filter module, a control method for the filter module and washing equipment. Background Art

[0002] During the washing process, laundry machines, such as washing machines, generate lint from the clothes due to friction between them and between them and the washing machine itself. This lint can become lodged in the wash water. If the lint in the wash water is not removed, it is likely to adhere to the surface of the clothes after washing, affecting the cleaning effect. To address this issue, existing washing machines are equipped with filters for filtering out lint. During the washing process, wash water is continuously passed through the filters to remove lint from the wash water.

[0003] However, filtered impurities such as lint will continue to accumulate in the filter after filtration, causing the filter to become clogged over time and rendering the filtration function inoperable. Since the filter is generally installed inside the washing machine, the user cannot directly observe the accumulation of filtered impurities and can only clean it regularly. However, if the user sheds a large amount of lint from the clothes washed over a period of time, or if the user forgets to clean the filter for a long time, the filter may become clogged. In this case, if the user uses the washing machine to wash clothes, the filter will not be able to perform its filtering function, which will affect the washing effect of the clothes. If the washing machine cannot determine that the filter is clogged and forcibly drives the washing water into the filter, the filter cannot drain water, which will cause the water pressure in the water channel structure of the washing machine to increase, and in severe cases, even damage the water channel structure.

[0004] On the other hand, in recent years, the concept of microplastics has been introduced in the environmental protection field and has gradually received increasing attention. Studies have found that a significant source of microplastics is the wastewater discharged from household washing machines. This is due to the prevalence of synthetic fabrics. Clothing fibers shed during the washing process are discharged with the washing machine's drain water and become microplastics that mix with the natural water environment. Microplastics enter the ecological cycle directly with the drainage water, accumulating through the natural food chain and ultimately in the human body, potentially affecting human health. For this reason, some regions have established standards for the content of microplastics in washing machine drainage. If the washing machine is operated while the filter is inoperative, lint from clothing may be discharged directly with the washing machine's drain water, resulting in the presence of large amounts of microplastics in the washing machine's drainage, which fails to meet emission standards.

[0005] In view of this, the present invention is proposed.

[0006] Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a filter module, a control method for the filter module and a washing device.

[0008] To solve the above technical problems, the first object of the present invention is to provide a filter module with a long service life and simple cleaning operation and a washing device having the filter module. Specifically, the following technical solutions are adopted:

[0009] A filtering module, comprising:

[0010] A filter device is provided with a sewage outlet for discharging sewage carrying filtered impurities;

[0011] A recovery device is connected to the sewage outlet of the filter device, and the recovery device is provided with at least two sets of lint collection components;

[0012] Each group of lint collecting components receives sewage discharged from the filtering device independently and / or together and collects filtered impurities in the sewage.

[0013] Furthermore, each group of lint collecting components has a collecting cavity for collecting filtered impurities, and each collecting cavity is connected to the sewage outlet of the filtering device.

[0014] Furthermore, it also includes a sewage pipeline, the water inlet end of the sewage pipeline is connected to the sewage outlet of the filter device, and the water outlet end is connected to one of the collection chambers; a sewage branch is connected between the water inlet end and the water outlet end of the sewage pipeline, and the water outlet end of the sewage branch is connected to other collection chambers.

[0015] Furthermore, a branch control valve is provided on the sewage branch to control the on-off of the sewage branch.

[0016] Furthermore, a pressure detection element for detecting the water pressure in the sewage branch line is provided between the water inlet end of the sewage branch line and the branch line control valve.

[0017] Furthermore, the initial state of the branch control valve is a closed state, and whether to open the branch control valve is determined based on the water pressure detected by the pressure detection element.

[0018] Furthermore, a sewage control valve for controlling the on-off of the sewage pipeline is provided on the sewage pipeline.

[0019] Furthermore, the sewage control valve is arranged between the water outlet end of the sewage pipeline and the water inlet end of the sewage branch line.

[0020] Furthermore, the recycling device includes a shell having a main cavity inside, and the lint collecting assembly is arranged in the main cavity;

[0021] The sewage carrying the filtered impurities enters the collection chamber of the lint collecting assembly, is filtered by the lint collecting assembly and flows into the main chamber outside the collection chamber, where the filtered impurities are collected.

[0022] A washing device comprises a water drum and the above-mentioned filter module, wherein the filter device of the filter module is connected to the water drum.

[0023] The second object of the present invention is to provide a filter module that can automatically release pressure when a blockage occurs and a washing device having the filter module. Specifically, the following technical solutions are adopted:

[0024] A filtering module, comprising:

[0025] A filter device is provided with a sewage outlet for discharging sewage carrying filtered impurities;

[0026] A recovery device, connected to the sewage outlet of the filtering device, to receive sewage discharged from the filtering device;

[0027] The pressure relief device is arranged between the sewage outlet of the filtering device and the recovery device, and is used to relieve pressure when the sewage entering the recovery device is blocked.

[0028] Furthermore, the pressure relief device includes a pressure relief branch and a pressure relief valve arranged on the pressure relief branch; the water inlet end of the pressure relief branch is connected between the sewage outlet of the filtering device and the recovery device, the pressure relief valve is opened to connect the pressure relief branch, and the sewage discharged from the filtering device enters the pressure relief branch to achieve pressure relief.

[0029] Furthermore, the pressure relief valve includes:

[0030] The valve body is provided with a water inlet and a water outlet;

[0031] A valve plug is reciprocatingly disposed in the valve body;

[0032] a reset member, applying a reset force to the valve plug to keep the valve plug sealing the water inlet;

[0033] When the water pressure in the pressure relief branch reaches a preset value, the valve plug moves under the action of the water pressure to open the water inlet; when the water pressure in the pressure relief branch drops, the valve plug resets and blocks the water inlet under the action of the reset member.

[0034] Furthermore, the valve body has a certain extension length along the direction of reciprocating motion of the valve plug, the water inlet is arranged at one end of the valve body, and the water outlet is arranged on the side wall of the valve body in an area close to the end where the water inlet is located.

[0035] Furthermore, a pressure detection element for detecting the water pressure in the pressure relief branch is provided between the water inlet end of the pressure relief branch and the pressure relief valve.

[0036] Furthermore, it also includes a sewage pipeline, the water inlet end of the sewage pipeline is connected to the sewage outlet of the filtering device, the water outlet end is connected to the recovery device, and the water inlet end of the pressure relief branch is connected to the sewage pipeline; a sewage control valve for controlling the on and off of the sewage pipeline is provided on the sewage pipeline.

[0037] Furthermore, the sewage control valve is arranged between the water outlet end of the sewage pipeline and the water inlet end of the pressure relief branch.

[0038] Furthermore, the recovery device comprises:

[0039] a housing having a recovery chamber therein;

[0040] The lint collecting assembly is arranged in the recovery chamber to form a collection chamber for receiving sewage. The sewage carrying filtered impurities enters the collection chamber, is filtered by the lint collecting assembly, and flows into the recovery chamber outside the collection chamber. The filtered impurities are collected in the collection chamber.

[0041] The pressure relief device relieves pressure when the wire chip collecting assembly is clogged by filtered impurities.

[0042] Furthermore, the pressure relief device includes a pressure relief branch, and the water inlet end of the pressure relief branch is connected between the sewage outlet of the filter device and the recovery device;

[0043] The water outlet end of the pressure relief branch is communicated with the external space, or the water outlet end of the pressure relief branch is communicated with the recovery chamber outside the collection chamber.

[0044] A washing device comprises a water drum and the above-mentioned filter module, wherein the filter device of the filter module is connected to the water drum.

[0045] The third object of the present invention is to provide a filter module capable of autonomously detecting a blockage state, a control method thereof, and a washing device having the filter module. Specifically, the following technical solutions are adopted:

[0046] A filtering module, comprising:

[0047] A filter device is provided with a sewage outlet for discharging sewage carrying filtered impurities;

[0048] a recovery device, connected to the sewage outlet of the filtering device, and used for receiving sewage discharged from the filtering device;

[0049] The blockage detection device is used to detect whether blockage occurs in the process of the filtering device discharging sewage to the recovery device.

[0050] Furthermore, the blockage detection device includes a flow detection device for detecting the flow of sewage discharged by the filter device; the blockage detection device determines whether blockage occurs in the process of the filter device discharging sewage to the recovery device based on the flow of sewage discharged by the filter device.

[0051] Furthermore, it also includes a sewage pipeline, the sewage outlet of the filtering device is connected to the water inlet end of the sewage pipeline, and the water outlet end of the sewage pipeline is connected to the recovery device; the flow detection device is arranged on the sewage pipeline.

[0052] Furthermore, the blockage detection device includes a water level detection device for detecting water level information in the recovery device; the blockage detection device determines whether blockage occurs in the process of the filtering device discharging sewage to the recovery device based on the water level information in the recovery device.

[0053] Furthermore, the water level detection device includes a plurality of water level probes arranged at different heights inside the recovery device, and the water level probes generate feedback signals when in contact with water.

[0054] Furthermore, a set of water level probes includes two electrodes spaced apart from each other, and a feedback signal is generated when the two electrodes are connected by water.

[0055] Furthermore, the water level detection device includes two electrode sheets extending a certain length in the vertical direction, and the two electrode sheets are arranged opposite to each other at a certain interval; the capacitance value between the two electrode sheets changes with the area of ​​the electrode sheets immersed below the water surface.

[0056] Furthermore, the recovery device comprises:

[0057] a housing having a recovery chamber therein;

[0058] The lint collecting assembly is arranged in the recovery chamber to form a collection chamber for receiving sewage. The sewage carrying filtered impurities enters the collection chamber, is filtered by the lint collecting assembly, and flows into the recovery chamber outside the collection chamber. The filtered impurities are collected in the collection chamber.

[0059] The water level detection device is arranged in the recovery chamber to detect the water level information outside the collection chamber.

[0060] A control method for the filtering module described above determines whether blockage occurs in the process of the filtering device discharging sewage to the recovery device based on the detection result of the blockage detection device.

[0061] Furthermore, the blockage detection device includes a flow detection device for detecting the flow of sewage discharged by the filter device; if it is detected that the flow of sewage discharged by the filter device is lower than a preset flow, it is determined that the process of the filter device discharging sewage to the recovery device is blocked;

[0062] Alternatively, the blockage detection device includes a water level detection device for detecting water level information in the recovery device; if it is detected that the water level height in the recovery device is greater than a preset water level, or it is detected that the water level change rate in the recovery device is less than a preset change rate, it is judged that the process of the filtering device discharging sewage to the recovery device is blocked.

[0063] A washing device comprises a water drum and the above-mentioned filter module, wherein the filter device of the filter module is connected to the water drum.

[0064] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0065] 1. The recycling device is equipped with at least two lint collection assemblies. Collecting filtered impurities through these two lint collection assemblies increases the total amount of filtered impurities that can be collected, preventing wastewater from being blocked from entering the recycling device. This not only extends the cleaning cycle of the recycling device, but also allows users to clean each lint collection assembly separately, making it more convenient to use.

[0066] 2. A pressure relief device is provided in the filter module, which can realize the pressure relief function when the sewage is blocked in the process of entering the recovery device, causing the water pressure between the filter device and the recovery device to increase, thereby avoiding the structural damage caused by excessive water pressure and playing a protective role for the filter module.

[0067] 3. When the user cannot directly observe the status of the filter module, the blockage detection device installed in the filter module can autonomously detect whether blockage occurs in the process of the filter device discharging sewage to the recovery device, so that the washing equipment can monitor the status of the filter module and avoid the problem of the filter module being blocked and unable to perform the filtering function.

[0068] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0070] FIG1 is a schematic structural diagram of a washing device according to an embodiment of the present invention;

[0071] FIG2 is a schematic structural diagram of the filtration module and related waterways in Examples 1 to 3 of the present invention;

[0072] 3 is a flow chart of a control method for a washing device in a second embodiment of the present invention;

[0073] FIG4 is a flow chart of a control method for a washing device in a third embodiment of the present invention;

[0074] FIG5 is a schematic structural diagram of a filtration module and related waterways in a fourth embodiment of the present invention;

[0075] FIG6 is a schematic structural diagram of a filter module and related waterways in a sixth embodiment of the present invention;

[0076] FIG7 is a schematic structural diagram of a pressure relief valve in a sixth embodiment of the present invention (closed state);

[0077] FIG8 is a schematic structural diagram of a pressure relief valve in a sixth embodiment of the present invention (in an open state);

[0078] 9 is a schematic structural diagram of the filter module and related waterways in Example 7 of the present invention;

[0079] 10 is a flow chart of a control method for a washing device according to an eighth embodiment of the present invention;

[0080] 11 is a schematic structural diagram of the filter module and related waterways in Example 9 of the present invention;

[0081] 12 is a schematic structural diagram of the filtration module and related waterways in Example 10 of the present invention;

[0082] 13 is a schematic structural diagram of a water level detection device in a recovery device according to a tenth embodiment of the present invention;

[0083] 14 is another schematic structural diagram of the water level detection device in the recovery device according to the tenth embodiment of the present invention;

[0084] FIG15 is a schematic structural diagram of a filtration module and related waterways in Example 11 of the present invention;

[0085] FIG16 is a flow chart of a control method for a washing device according to a twelfth embodiment of the present invention.

[0086] In the figure: 10, box body; 100, water tank; 110, window pad; 220, circulation pipeline; 230, return pipeline; 231, return water control valve; 240, sewage pipeline; 241, sewage control valve; 243, flow meter; 244, sewage branch; 245, pressure detection element; 246, branch control valve; 247, pressure relief branch; 250, external discharge pipeline; 260, water tank drain pipe; 270, switching device; 400, circulation pump; 500, recovery device; 510, shell; 511, first water inlet; 512, second water inlet; 531, first chamber; 532, second chamber; 533, main chamber; 570, lint collection assembly; 571, first lint collection assembly Assembly component; 572, second wire scrap collecting component; 580, water level detection device; 581, water level probe; 582, step structure; 583, electrode type water level detection device; 590, pressure relief valve; 591, valve body; 5911, water inlet; 5912, water outlet; 592, valve plug; 593, reset member; 594, protrusion; 595, limit portion; 596, valve seat; 597, guide rod; 600, filter device; 610, filter cavity; 6101, water inlet; 6102, filtered water outlet; 6103, sewage outlet; 620, filter mechanism; 621, water outlet joint; 660, drive mechanism; 680, cleaning particles; 690, baffle; 691, water hole.

[0087] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0088] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0089] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They 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 direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0090] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0091] Example 1

[0092] This embodiment provides a filter module and a washing device including the filter module. The washing device may be a washing machine, a washer-dryer, a care machine, or other washing device with a clothing washing function.

[0093] As shown in Figures 1 and 2, the washing device of this embodiment includes a water drum 100. The filter module is connected to the water drum 100 and can receive and filter water in the water drum 100. The filter module specifically includes a filter device 600 and a recovery device 500.

[0094] The filter device 600 is connected to the water storage drum 100, and a circulation pump 400 is provided between the filter device 600 and the water storage drum 100. The water in the water storage drum 100 can be introduced into the filter device 600 for filtration under the action of the circulation pump 400. The filter device 600 has a self-cleaning function. The user does not need to remove the filter device 600 for manual cleaning. The filter device 600 can automatically clean and discharge filtered impurities accumulated during the filtration process with the water flow. Specifically, the filter device 600 is provided with a sewage outlet 6103, through which sewage carrying filtered impurities after self-cleaning can be discharged, preventing filtered impurities from accumulating in large quantities inside the filter device 600 and affecting filtration efficiency.

[0095] The recovery device 500 is connected to the sewage outlet 6103 of the filtering device 600, and can receive the sewage discharged by the filtering device 600, so as to prevent the sewage discharged by the filtering device 600 from directly flowing into the drainage water flow of the washing equipment and being discharged outward, thereby preventing the problem of microplastics in the filtered impurities from entering the ecological cycle with the drainage water flow.

[0096] In this embodiment, the recovery device 500 is internally provided with at least two lint collection assemblies 570. Each lint collection assembly 570 independently receives wastewater discharged from the filter device and collects filtered impurities therein. Each lint collection assembly 570 has a collection chamber for collecting filtered impurities, and each collection chamber is connected to the sewage outlet 6103 of the filter device 600.

[0097] Specifically, the recovery device 500 of this embodiment is provided with a first lint collection component 571 and at least one second lint collection component 572. The first lint collection component 571 and the second lint collection component 572 independently receive sewage discharged by the filtering device 600 and collect filtered impurities in the sewage.

[0098] Furthermore, the first lint collection assembly 571 has a first collection chamber for collecting filtered impurities, and the second lint collection assembly 572 has a second collection chamber independent of the first collection chamber. The first and second collection chambers are each connected to the sewage outlet 6103 of the filter device 600. The second collection chamber being independent of the first means that sewage discharged from the filter device 600 directly enters the second collection chamber without entering the first collection chamber.

[0099] In the above scheme, the recovery device 500 can preferentially use the first lint collection component 571 to receive the sewage discharged by the filtering device 600. When the first lint collection component 571 is full and can no longer receive sewage, one or more second lint collection components 572 can also be used to continue to receive sewage, thereby avoiding the situation where the sewage discharge process of the filtering device 600 is forced to stop.

[0100] In this embodiment, the recovery device 500 further includes a housing 510 having a main chamber 533 therein. The first lint collecting assembly 571 and the second lint collecting assembly 572 are both disposed in the main chamber 533. The first lint collecting assembly 571 and the second lint collecting assembly 572 can each filter the wastewater.

[0101] Specifically, when sewage carrying filtered impurities enters the first collection chamber of the first lint collection assembly 571, it can be filtered by the first lint collection assembly 571 and flow into the main chamber 533 outside the first collection chamber, where the filtered impurities are collected. When sewage carrying filtered impurities enters the second collection chamber of the second lint collection assembly 572, it can be filtered by the second lint collection assembly 572 and flow into the main chamber 533 outside the second collection chamber, where the filtered impurities are collected.

[0102] Figure 2 shows a top view of the structure of the recovery device 500 when a second lint collection component 572 is set, wherein the first lint collection component 571 and the second lint collection component 572 are horizontally distributed in the shell 510, so that water filtered by either the first lint collection component 571 or the second lint collection component 572 will not drip onto the other.

[0103] In detail, the shell 510 of the recovery device 500 is provided with a first water inlet 511 and a second water inlet 512. The first water inlet 511 and the second water inlet 512 are both provided on the right end surface of the shell 510 and are connected to the sewage outlet 6103 of the filter device 600 through a pipeline. The first lint collection assembly 571 includes a filter mechanism that encloses a first collection chamber. The filter mechanism is provided near the right end surface of the shell 510 and is connected to the first water inlet 511. The structure of the second lint collection assembly 572 is similar to that of the first lint collection assembly 571, and also includes a filter mechanism that encloses a second collection chamber and is provided near the right end surface of the shell 510 and is connected to the second water inlet 512.

[0104] The housing 510 is insertable and removable on the washing machine housing 10, and the upper side of the housing 510 is open. The first and second lint collection assemblies 571 and 572 are detachably mounted inside the housing 510, allowing users to remove them for cleaning, making cleaning more convenient.

[0105] In the above solution, the wastewater discharged from the filter device 600 can be filtered in the recovery device 500, and the filtered impurities are ultimately collected within the first lint collection assembly 571 or the second lint collection assembly 572, while the water free of the filtered impurities is collected in the main chamber 533 of the recovery device 500. The separation of the filtered impurities from the wastewater by the first lint collection assembly 571 and the second lint collection assembly 572 facilitates direct processing of the collected filtered impurities by the user, avoiding the situation where the filtered impurities are mixed with the water and cannot be effectively processed.

[0106] In a preferred embodiment of this embodiment, a water outlet communicating with the main chamber 533 can be provided on the housing 510, allowing water collected in the main chamber 533 of the recovery device 500 to be discharged through the outlet. Since the water collected in the main chamber 533 is filtered water free of filtered impurities, it can be recirculated into the water storage drum 100 for reuse or directly discharged into the external discharge pipe 250 of the washing machine, thereby preventing the problem of micro-lint contained in the filtered impurities entering the ecological cycle.

[0107] In a further embodiment of this embodiment, to enable the filter device 600 to discharge wastewater into the recovery device 500, the filter module further includes a drain line 240. The water inlet of drain line 240 is connected to the drain outlet 6103 of the filter device 600, and the water outlet of drain line 240 is connected to the first water inlet 511 and communicates with the first collection chamber within the first lint collection assembly 571. A drain branch line 244 is connected between the water inlet and the water outlet of drain line 240. The water outlet of drain branch line 244 is connected to the second water inlet 512 and communicates with the second collection chamber within the second lint collection assembly 572.

[0108] A branch control valve 246 is provided on the sewage branch 244 to control the opening and closing of the sewage branch 244. When the branch control valve 246 is closed, the sewage branch 244 is not conductive, and sewage discharged from the filter device 600 flows along the sewage pipe 240 into the first collection chamber. When the branch control valve 246 is open, the sewage branch 244 is conductive, and sewage discharged from the filter device 600 can bypass the first lint collection assembly 571 and flow along the sewage branch 244 into the second collection chamber.

[0109] In this embodiment, the second lint collection component 572 is used as an auxiliary collection component. When the first lint collection component 571 is blocked by filtered impurities and cannot further receive sewage for filtration, the branch control valve 246 can be opened to guide the sewage discharged from the filtering device 600 to the second lint collection component 572.

[0110] Furthermore, the filtering module in this embodiment can monitor whether the first lint collecting assembly 571 is clogged, and then automatically control the branch control valve 246 to open.

[0111] Specifically, a pressure detection element 245 is provided between the water inlet of the sewage branch 244 and the branch control valve 246 for detecting the water pressure in the sewage branch 244. The branch control valve 246 is initially closed, and whether to open the branch control valve 246 is determined based on the water pressure detected by the pressure detection element 245.

[0112] In the initial state, the first lint collection assembly 571 is unobstructed, and wastewater discharged from the filter device 600 can smoothly enter the first collection chamber of the first lint collection assembly 571. At this time, there is almost no water in the sewage branch 244. However, if the first lint collection assembly 571 becomes obstructed, the incoming wastewater cannot pass through the first lint collection assembly 571 and enter the main chamber 533, and will quickly fill the first collection chamber.

[0113] When the first collection chamber is nearly full, wastewater cannot enter the first collection chamber and flows into the drainage branch 244. If the filter device 600 continues to discharge wastewater, the closed branch control valve 246 will cause the water pressure in the drainage branch 244 to rise rapidly. When the pressure detection element 245 detects that the water pressure exceeds the preset pressure, the branch control valve 246 is controlled to open, draining the wastewater into the second collection chamber within the second lint collection assembly 572.

[0114] In the above solution, by providing a pressure sensing element 245 to monitor the water pressure in the drainage branch 244, blockage of the first lint collection assembly 571 can be detected promptly, and the branch control valve 246 can be automatically controlled to open, ensuring that the filter device 600 can continue to discharge wastewater. The pressure sensing element 245 and the branch control valve 246 cooperate to automatically control the activation of the second lint collection assembly 572, providing a more intelligent operation.

[0115] In a further embodiment of the present invention, a sewage control valve 241 is provided on the sewage pipe 240 for controlling the on-off of the sewage pipe 240. The sewage control valve 241 is specifically provided between the outlet end of the sewage pipe 240 and the inlet end of the sewage branch 244.

[0116] When the filter device 600 filters the imported water, the sewage control valve 241 is in a closed state, and the branch control valve 246 is in a closed state, so that the sewage outlet 6103 of the filter device 600 is not connected to the recovery device 500, and the filter device 600 can only discharge the filtered water to the outside through the filtered water outlet 6102.

[0117] When the filter device 600 needs to discharge sewage, the sewage control valve 241 is opened again, or when the pressure detection element 245 detects that the water pressure rises to a preset pressure, the branch control valve 246 is opened, so that the filter device 600 can discharge the sewage into the recovery device 500.

[0118] It should be noted that since the sewage control valve 241 is disposed between the outlet of the sewage pipe 240 and the inlet of the sewage branch 244, the water pressure in the sewage branch 244 may be high even when the sewage control valve 241 is closed. Therefore, in this embodiment, the control pressure detection element 245 operates only when the sewage control valve 241 is open to detect the water pressure in the sewage branch 244, thereby preventing the branch control valve 246 from being accidentally opened while the filter device 600 is filtering.

[0119] In this embodiment, a first lint collection assembly 571 and a second lint collection assembly 572 are provided in the recovery device 500. If the first lint collection assembly 571 becomes clogged, the second lint collection assembly 572 can receive and filter wastewater discharged from the filter device 600. Even if the first lint collection assembly 571 becomes clogged, the filtration module can continue to operate, and the filtration efficiency will not be reduced due to the inability of the filter device 600 to discharge filtered impurities. By providing a pressure detection element 245 and a branch control valve 246 on the sewage branch 244, automatic control of whether the second lint collection assembly 572 is activated is achieved, resulting in a higher degree of automation when applied to washing equipment.

[0120] In a further solution of this embodiment, the filtering device 600 specifically includes:

[0121] The filter chamber 610 is provided with a water inlet 6101, a filtered water outlet 6102, and a sewage outlet 6103. The water inlet 6101 is used to communicate with the water container 100 to receive the introduced water, and the filtered water outlet 6102 is used to discharge the filtered water.

[0122] The filter mechanism 620 is rotatably disposed inside the filter cavity 610 and has a water outlet joint 621 rotatably and sealingly connected to the filtered water outlet 6102;

[0123] The driving mechanism 660 is connected to the filtering mechanism 620 and is used to drive the filtering mechanism 620 to rotate in the filtering cavity 610 .

[0124] The filter mechanism 620 divides the interior of the filter chamber 610 into an outer chamber and an inner chamber. The water inlet 6101 communicates with the outer chamber, while the filtered water outlet 6102 communicates with the inner chamber. Water from the water container 100, driven by the circulating pump 400, enters the outer chamber through the water inlet 6101, passes through the filter mechanism 620, and enters the inner chamber for filtration. Impurities carried in the water adhere to the outer wall of the filter mechanism 620. The water, free of these impurities, then flows out of the filtered water outlet 6102 through the water outlet connector 621.

[0125] Specifically, the filter mechanism 620 includes a filter holder and a filter covering the holder. One end of the filter holder extends into the filtered water outlet 6102 to form a water outlet connector 621. The pore size of the filter is such that the filter can remove impurities such as lint with a diameter of at least 17 μm ± 2 μm and a length of at least 500 μm ± 50 μm.

[0126] When it is necessary to clean the filtered impurities inside the filter device 600, the filter mechanism 620 is driven to rotate by the driving mechanism 660, which can stir the water flow in the filter cavity 610, so that the filtered impurities attached to the outer wall of the filter mechanism 620 are peeled off under the dual action of centrifugal force and agitated water flow, and merged into the water in the filter cavity 610, and then discharged with the water flow from the sewage outlet 6103 on the filter cavity 610.

[0127] Cleaning particles 680 are also provided between the inner wall of the filter cavity 610 and the outer wall of the filter mechanism 620. These particles are used to clean the inner wall of the filter cavity 610 and the outer wall of the filter mechanism 620 by friction and collision with the water flow. During the filtration process, the cleaning particles 680 continuously rub against the inner wall of the filter cavity 610 and the outer wall of the filter mechanism 620 with the flowing water, causing attached filtered impurities to fall off, thereby preventing the deposition of filtered impurities and preventing the filter mechanism 620 from being covered with filtered impurities too quickly, thereby affecting filtration efficiency. Furthermore, this also avoids the problem of thick, attached filtered impurities after filtration being completed, which would adhere too firmly to the inner wall of the filter cavity 610 or the outer wall of the filter mechanism 620, making it difficult to remove the filtered impurities when cleaning the filter device 600 later.

[0128] When the driving mechanism 660 drives the filter mechanism 620 to rotate in the filter cavity 610 to achieve self-cleaning, the cleaning particles 680 move in the filter cavity 610 under the action of the agitated water flow, and rub against the inner wall of the filter cavity 610 and the outer wall of the filter mechanism 620, thereby improving the stripping efficiency of the filtered impurities and achieving a better self-cleaning effect of the filter device 600.

[0129] A baffle 690 is also disposed within the filter chamber 610, with a water hole 691 formed therein. Cleaning particles 680 are disposed on one side of the baffle 690 (i.e., the left side in FIG. 2 ), while the filtered water outlet 6102 and the sewage outlet 6103 of the filter chamber 610 are located on the other side of the baffle 690 (i.e., the right side in FIG. 2 ).

[0130] The baffle 690 prevents cleaning particles 680 from accumulating toward the filtered water outlet 6102 during the filtration process. When the filter device 600 performs self-cleaning and discharges wastewater, the wastewater carrying filtered impurities can pass through the water holes 691, through the baffle 690, and out of the sewage outlet 6103. However, the cleaning particles 680 are blocked by the baffle 690 and are not discharged from the sewage outlet 6103 with the water flow, thus preventing the loss of the cleaning particles 680. Furthermore, the baffle 690 prevents the cleaning particles 680 from accumulating at the sewage outlet 6103, which could clog the outlet and affect sewage discharge efficiency.

[0131] The washing machine of this embodiment specifically includes a circulating filtration pipeline, whose water inlet and outlet are respectively connected to the water drum 100. A filter device 600 and a circulating pump 400 are both disposed within the circulating filtration pipeline. While the washing machine is washing clothes, turning on the circulating pump 400 drives water from the water drum 100 along the circulating filtration pipeline, into the filter device 600, and then back into the water drum 100 after filtration.

[0132] Specifically, the bottom of the water storage drum 100 is connected to the water storage drum drain pipe 260, which is connected to the inlet of the circulation pump 400. The outlet of the circulation pump 400 is connected to the circulation line 220, which is in turn connected to the water inlet 6101 of the filter device 600. The filtered water outlet 6102 of the filter device 600 is connected to the water storage drum 100 via the return line 230. The outlet of the return line 230 is specifically connected to the window gasket 110 at the mouth of the water storage drum 100, through which water is returned to the water storage drum 100.

[0133] In a further embodiment of the present invention, a switching device 270 is provided between the filtered water outlet 6102 of the filter device 600 and the return water line 230. The water inlet of the switching device 270 is connected to the filtered water outlet 6102 of the filter device 600. The switching device 270 has a first water outlet and a second water outlet. The first water outlet is connected to the return water line 230, and the second water outlet is connected to the external drainage line 250 for draining water to the outside of the washing device. A switching mechanism is provided inside the switching device 270 to control whether one of the first and second water outlets is connected to the water inlet. The drainage water of the washing device is filtered by the filtering device 600 before being discharged, ensuring that the drainage water contains almost no microplastics.

[0134] By configuring switching device 270, a single filter device 600 in the washing machine can achieve both circulation filtration during the washing process and drainage filtration during the draining process. Furthermore, the circulation filtration and drainage filtration share the circulating pump 400 and some piping structure, simplifying the internal water control structure of the washing machine. The circulation filtration and drainage filtration functions can be switched by controlling the conduction direction of switching device 270, simplifying the control logic.

[0135] Preferably, a return water control valve 231 is further provided outside the filtered water outlet 6102 of the filter device 600 to control the connection between the filtered water outlet 6102 and the switching device 270. When the filter device 600 is performing filtration (including circulating filtration and drainage filtration), the return water control valve 231 is open. When the filter device 600 is controlling the discharge of sewage, the return water control valve 231 is closed, preventing the filter device 600 from discharging water through the filtered water outlet 6102, thereby ensuring that the sewage in the filter device 600 is fully discharged through the sewage outlet 6103.

[0136] In this embodiment, the washing machine utilizes filter device 600 for circulating filtration during the laundry process, removing impurities such as lint from the water, ensuring a thorough cleaning of the clothes. During the drainage phase, filter device 600 is used to filter the water, allowing the water to pass through filter device 600 before being discharged. This minimizes the microplastic content in the drainage water and avoids the ecological impact of laundry drainage.

[0137] Example 2

[0138] As shown in FIG1 and FIG2 , this embodiment provides a control method for the washing device described in the first embodiment, including:

[0139] The washing equipment runs a washing program and performs an additional program of directing water to the filter device 600 for filtration;

[0140] It is determined that the second lint collecting component 572 in the recycling device 500 has been activated, and a prompt message is sent.

[0141] Specifically, the washing equipment in this embodiment performs additional procedures including: the circulation pump 400 operates to guide water to the filter device 600 for filtration, and the filter device 600 discharges sewage into the recovery device 500 according to the set procedure.

[0142] The sewage discharge operation according to the set program means that after the filtering device 600 continues filtering for a period of time, the sewage discharge control valve 241 is opened to discharge sewage into the recovery device 500.

[0143] In this embodiment, when the second lint collection assembly 572 is activated, it indicates that the first lint collection assembly 571 has become clogged and filled with wastewater, and can no longer receive wastewater discharged from the filter device 600. Although the second lint collection assembly 572 can be used to receive wastewater and allow the washing machine to complete the current wash cycle, if the user does not clean the recovery device 500 after the current wash cycle ends and then runs the wash cycle again and performs the additional step of directing water to the filter module, it is likely that the second lint collection assembly 572 will become clogged, causing the recovery device 500 to be unable to continue receiving wastewater.

[0144] In this embodiment, whether the second lint collection component 572 is enabled is monitored during the washing process of the washing equipment, and a prompt message can be sent to the user when the second lint collection component 572 is enabled, reminding the user to clean the recovery device 500 after the end of this washing process, to ensure that the washing equipment can complete the execution of the additional program when it runs the washing process next time.

[0145] Specifically, the control method of the washing equipment in this embodiment is shown in FIG3 , and includes the following steps:

[0146] S11, the washing program starts running;

[0147] S12, executing an additional procedure to guide water to the filter device 600 for filtration;

[0148] S13, determining whether the second lint collecting component 572 is enabled, if so, sending a prompt message and then executing step S14, otherwise directly executing step S14;

[0149] S14: The washing program continues to run.

[0150] Furthermore, in this embodiment, the activation of the second lint collecting assembly 572 is controlled by controlling the open / close state of the branch control valve 246. Whether the branch control valve 246 is open is determined based on the water pressure detected by the pressure detection element 245.

[0151] In step S13 of the control method of this embodiment, when the sewage control valve 241 is in the open state and the water pressure detected by the pressure detection element 245 exceeds the preset pressure, the control branch control valve 246 is opened, and at the same time, it is determined that the second lint collection component 572 has been enabled, and a prompt message is issued to remind the user to clean the recovery device 500 after the end of this washing program.

[0152] Specifically, the washing machine may determine that the second lint collection assembly 572 is activated upon receiving a signal indicating that the water pressure exceeds a preset pressure. Alternatively, the washing machine may control the branch control valve 246 to open upon receiving a signal indicating that the water pressure exceeds a preset pressure. Upon receiving a signal indicating that the branch control valve 246 is in an open state, the washing machine determines that the second lint collection assembly 572 is activated.

[0153] In this embodiment, the washing machine sends a prompt message to the user after the second lint collection assembly 572 is activated, so that the user is promptly informed of the current status of the recovery device 500, thereby reminding the user to clean the recovery device 500 after the current washing cycle. This prevents the user from forgetting to clean the recovery device 500, which could result in the recovery device 500 being unable to continue to receive wastewater discharged by the filtration device 600 during the washing cycle and thus being unable to continue the additional filtration process.

[0154] Example 3

[0155] As shown in FIG1 and FIG2 , this embodiment provides a control method for the washing device described in the first embodiment, including:

[0156] The washing equipment runs a washing program and performs an additional program of directing water to the filter module for filtration;

[0157] Get the current filtering capability of the filtering module;

[0158] It is determined that the current filtering capability of the filtering module is lower than the first filtering threshold, and the execution of the additional program is stopped.

[0159] Specifically, the washing equipment in this embodiment performs additional procedures including: the circulation pump 400 operates to guide water to the filter device 600 for filtration, and the filter device 600 discharges sewage into the recovery device 500 according to the set procedure.

[0160] The sewage discharge operation according to the set program means that after the filtering device 600 continues filtering for a period of time, the sewage discharge control valve 241 is opened to discharge sewage into the recovery device 500.

[0161] In this embodiment, the filtering capacity of the filtering module specifically refers to the remaining filtering capacity of the recovery device 500, which can be determined by monitoring whether the first lint collecting component 571 and / or the second lint collecting component 572 is blocked.

[0162] In this embodiment, the current filtering capacity of the filtration module falls below the first filtering threshold, which corresponds to a situation where both the first lint collection assembly 571 and the second lint collection assembly 572 are clogged. At this point, the recovery device 500 can no longer receive wastewater discharged from the filtration device 600. If the additional procedure continues, the accumulated filtered impurities in the filtration device 600 cannot be discharged, and thus will soon become clogged.

[0163] Therefore, in this embodiment, when both the first lint collecting assembly 571 and the second lint collecting assembly 572 are clogged, the control stops executing the additional program, that is, water is no longer introduced into the filter device 600.

[0164] Furthermore, before determining that the current filtering capacity of the filtering module is lower than the first filtering threshold, it also includes: determining that the current filtering capacity of the filtering module is lower than the second filtering threshold, enabling the second lint collection component 572, continuing to run the washing program and keeping executing the additional program.

[0165] When the filtration module's current filtration capacity falls below the second filtration threshold, the first lint collection assembly 571 becomes clogged and filled with wastewater, preventing wastewater from entering the first collection chamber of the first lint collection assembly 571. By opening the bypass control valve 246, the second lint collection assembly 572 is activated, allowing the recovery device 500 to continue receiving wastewater discharged from the filtration device 600, and thus the additional procedures can continue.

[0166] In a further embodiment of the present invention, after stopping the additional program, the washing program continues to run. That is, when it is determined that the recovery device 500 can no longer receive the sewage discharged by the filtering device 600, only the filtering module is controlled to stop working, and the washing program continues to run until it ends.

[0167] In this way, the clogging of the filter device 600 is avoided and the washing process can be completed without the user's operation, which increases the degree of automation. In particular, when the user is not waiting by the washing machine, the washing process will not be stopped due to the clogging of the recovery device 500, thus avoiding user complaints caused by the inability to complete the washing process.

[0168] Furthermore, the stopping of the additional program in this embodiment includes: in the subsequent running of the washing program, the circulation pump 400 is no longer turned on for circulation filtration, and the circulation pump 400 is only turned on for drainage filtration during the drainage stage.

[0169] In this embodiment of the washing machine, the drain water can only be discharged after passing through the filter device 600. Therefore, drainage filtration is unavoidable during the drainage phase. During the drainage phase, the filter device 600 operates for a shorter period of time than during the washing / rinsing phase. By completing the filtration of the drain water without draining the wastewater, the filter device 600 does not become completely clogged.

[0170] In this embodiment, the washing machine can determine whether the first lint collection assembly 571 is clogged by detecting the water pressure of the pressure detection element 245, and then control whether to open the branch control valve 246 to activate the second lint collection assembly 572. Similarly, the pressure detection element 245 can also detect the water pressure of the sewage branch 244 to further determine whether the second lint collection assembly 572 is clogged.

[0171] Specifically, when the branch control valve 246 is in a closed state, if the water pressure detected by the pressure detection element 245 exceeds the first preset pressure, it is determined that the first lint collection component 571 is blocked, and the branch control valve 246 is controlled to open, and the sewage discharged from the filter device 600 is received through the second lint collection component 572.

[0172] The washing machine continues to run the washing program, and each time the filter device 600 performs a sewage discharge operation, the branch control valve 246 is opened. When the branch control valve 246 is in the open state, if the water pressure detected by the pressure detection element 245 exceeds the second preset pressure, the second lint collection assembly 572 is determined to be clogged, and the execution of the additional program is stopped.

[0173] In detail, the control method of the washing equipment is shown in FIG4 , and includes the following steps:

[0174] S21, the washing program starts running;

[0175] S22, executing additional procedures to guide water to the filter device 600 for filtration;

[0176] S23: The water pressure detected by the pressure detection element 245 exceeds the first preset pressure, the branch control valve 246 is opened, and the second lint collecting assembly 572 is activated;

[0177] S24, the washing program continues to run, and the additional program continues to be executed;

[0178] S25: The water pressure detected by the pressure detection element 245 exceeds the second preset pressure, and the execution of the additional program is stopped;

[0179] S26: The washing program continues to run.

[0180] In the above solution, since stopping the additional program only means not executing the circulation filtration anymore, the drainage filtration still needs to be performed during the drainage phase. Therefore, the value of the second preset pressure is smaller than the value of the first preset pressure.

[0181] When the water pressure detected by the pressure detection element 245 exceeds the first preset pressure, the first lint collection component 571 is completely blocked and filled with sewage. At this time, the second lint collection component 572 is activated to ensure full utilization of the filtering capacity of the first lint collection component 571.

[0182] When the water pressure detected by the pressure detection element 245 exceeds the second preset pressure, since the second preset pressure is less than the first preset pressure, the second lint collection assembly 572 is blocked, but is not completely filled with wastewater and still has some space to continue receiving wastewater. In this way, during the subsequent washing process, when the water is filtered, a small amount of wastewater can still be discharged into the recovery device 500, thereby reducing the accumulation of filtered impurities in the filter device 600 and preventing clogging of the filter device 600.

[0183] In this embodiment, during a washing cycle, when the first lint collection assembly 571 is filled with wastewater, the second lint collection assembly 572 is activated. If the second lint collection assembly 572 becomes clogged, the filtration cycle is discontinued, but the washing cycle continues, with drainage filtration performed during the drainage phase. This prevents the potential for clogging of the filter device 600 if it continues to operate without being able to remove filtered impurities, while also ensuring that the washing cycle is completed without user intervention, thereby improving the automation level of the washing machine.

[0184] Example 4

[0185] As shown in FIG1 and FIG5 , the difference between this embodiment and the above-mentioned embodiment 1 is that the first lint collecting assembly 571 and the second lint collecting assembly 572 in the recovery device 500 together receive the sewage discharged by the filtering device 600 and collect filtered impurities in the sewage.

[0186] Specifically, in this embodiment, the first lint collection component 571 and the second lint collection component 572 receive sewage together, which specifically means that when the filter device 600 discharges sewage outward, the sewage can enter the first lint collection component 571 and the second lint collection component 572 at the same time, but the second collection chamber of the second lint collection component 572 is still independent of the first collection chamber of the first lint collection component 571.

[0187] Furthermore, in this embodiment, the sewage control valve 241 on the sewage pipe 240 is disposed between the water inlet of the sewage pipe 240 and the water inlet of the sewage branch 244, eliminating the need for a separate control valve structure for controlling its on / off operation on the sewage branch 244. When the sewage control valve 240 is open, the first collection chamber of the first lint collection assembly 571 and the second collection chamber of the second lint collection assembly 572 are simultaneously connected to the sewage outlet of the filter device 600, allowing sewage discharged from the filter device 600 to enter both the first and second collection chambers.

[0188] In this embodiment, the first lint collection assembly 571 and the second lint collection assembly 572 in the recovery device 500 do not have a specific order for receiving wastewater for filtration. When the wastewater control valve 241 is opened to discharge wastewater from the filtration device 600, the wastewater discharge line 240 and the wastewater branch line 244 are simultaneously connected, allowing wastewater to flow to both the first and second lint collection assemblies 571 and 572.

[0189] In this manner, the first lint collection assembly 571 and the second lint collection assembly 572 jointly receive wastewater discharged from the filter device 600, thereby extending the service life of the recovery device 500. Furthermore, the first lint collection assembly 571 and the second lint collection assembly 572 are used at similar frequencies, and the first lint collection assembly 571 does not need to be frequently maintained due to frequent use.

[0190] Example 5

[0191] This embodiment is a further limitation of the above-mentioned embodiment 1. A plurality of the second lint collection components are provided. The first lint collection component and the plurality of second lint collection components receive the sewage discharged by the filter device independently of each other, and the plurality of second lint collection components receive the sewage discharged by the filter device together.

[0192] Specifically, the drainage outlet of the filter device is connected to the first collection chamber of the first lint collection assembly via a drainage pipeline, and a drainage control valve is provided on the drainage pipeline. A drainage branch is connected between the water inlet end of the drainage pipeline and the drainage control valve. The drainage branch includes a main section connected to the drainage pipeline and a plurality of branch sections respectively connected to the main section. The plurality of branch sections are connected to the second collection chambers of the plurality of second lint collection assemblies in a one-to-one correspondence.

[0193] The branch control valve and pressure sensing element are both located on the main section of the drainage branch. Initially, the branch control valve is closed, allowing wastewater from the filter to flow to the first lint collection assembly. If the first lint collection assembly becomes clogged, wastewater enters the main section of the drainage branch, increasing the water pressure there. When the water pressure detected by the pressure sensing element exceeds a preset pressure, the branch control valve opens, allowing wastewater from the filter to flow through the various branch sections of the drainage branch to the various secondary lint collection assemblies.

[0194] In this embodiment, the provision of multiple second lint collection assemblies further increases the total amount of filtered impurities that can be collected by the recovery device. In the event of a blockage in the first lint collection assembly, the multiple second lint collection assemblies can essentially synchronously receive and filter wastewater discharged from the filtration device. This eliminates the need to individually control the reception of wastewater by each second lint collection assembly, simplifying the structure. Furthermore, each second lint collection assembly experiences similar frequency of use, resulting in a substantially uniform degree of wear and tear during use, making it easier for users to maintain or replace the entire assembly after a period of use.

[0195] Example 6

[0196] As shown in Figures 1 and 6, the difference between this embodiment and the above-mentioned embodiments one to five is that the filtration module also includes a pressure relief device, which is arranged between the sewage outlet 6103 of the filtration device 600 and the recovery device 500, and is used to relieve pressure when the sewage entering the recovery device 500 is blocked.

[0197] Because the recovery device 500 receives wastewater containing filtered impurities, the filtered impurities may clog the recovery device 500, preventing wastewater subsequently discharged from the filter device 600 from entering the recovery device 500. In particular, if the circulation pump 400 is running at this time, continuously pumping water from the water storage drum 100 into the filter device 600 while the filter device 600 is unable to discharge water to the recovery device 500, the water pressure inside the filter device 600 and between the filter device 600 and the recovery device 500 may increase significantly, potentially damaging the waterway structure.

[0198] By providing a pressure relief device, excessive water pressure can be released in time, thereby avoiding structural damage that may be caused by excessive water pressure and protecting the filter module.

[0199] Specifically, the recovery device 500 in this embodiment includes a housing 510 having a recovery chamber therein, and a lint collection assembly 570 disposed within the recovery chamber. The lint collection assembly 570 forms a collection chamber for receiving wastewater, dividing the recovery chamber into a collection chamber within the lint collection assembly 570 and a main chamber 533 outside the lint collection assembly 570. Sewage carrying filtered impurities discharged from the filtration device 600 enters the collection chamber, is filtered by the lint collection assembly 570, and then flows into the main chamber 533 outside the lint collection assembly 570, where the filtered impurities are collected.

[0200] The housing 510 is inserted / removed and mounted on the washing machine housing 10, and the upper side of the housing 510 is set to an open structure. The lint collection assembly 570 is detachably mounted inside the housing 510, and the user can remove it for cleaning, making the cleaning operation more convenient.

[0201] In the above solution, the wastewater discharged from the filter device 600 can be filtered in the recovery device 500, and the filtered impurities are finally collected in the collection chamber of the lint collection assembly 570, while the water without the filtered impurities is collected in the main chamber 533 outside the lint collection assembly 570. The lint collection assembly 570 separates the filtered impurities from the wastewater, making it convenient for the user to directly process the collected filtered impurities, and avoiding the situation where the filtered impurities are mixed with the water and cannot be effectively processed.

[0202] In this embodiment, the pressure relief device is primarily used to relieve pressure when the lint collection assembly 570 is clogged with filtered impurities. The interior of the lint collection assembly 570 primarily collects filtered impurities, while the water, which accounts for the vast majority of the sewage volume, is stored in the main chamber 533 outside the lint collection assembly 570. Consequently, the volume within the lint collection assembly 570 is relatively small. When the lint collection assembly 570 is clogged with filtered impurities, subsequent sewage cannot be filtered by the lint collection assembly 570 and flows into the main chamber 533, quickly filling the collection chamber within the lint collection assembly 570, preventing subsequent sewage from entering. At this point, a pressure relief device is required to relieve pressure.

[0203] In a specific embodiment of this embodiment, the pressure relief device includes a pressure relief branch 247 and a pressure relief valve 590 disposed on the pressure relief branch 247. The sewage outlet 6103 of the filter device 600 is connected to the recovery device 500 via the sewage discharge pipe 240. The water inlet end of the pressure relief branch 247 is connected to the sewage discharge pipe 240 between the sewage outlet 6103 of the filter device 600 and the recovery device 500. When the pressure relief valve 590 is opened, the pressure relief branch 247 is opened, allowing the sewage discharged from the filter device 600 to enter the pressure relief branch 247 for pressure relief.

[0204] In the above scheme, when pressure relief is required, the pressure relief valve 590 is opened to connect the pressure relief branch 247, and the sewage in the sewage pipe 240 can enter the pressure relief branch 247, and then the sewage in the filter device 600 can be discharged along the pressure relief branch 247, thereby achieving the purpose of reducing the water pressure in the sewage pipe 240.

[0205] In a further embodiment of this embodiment, the outlet of the pressure relief branch 247 communicates with the main chamber 533 outside the lint collection assembly 570. That is, the wastewater still flows into the recovery device 500, but instead of entering the collection chamber of the lint collection assembly 570, it flows directly into the main chamber 533 outside the lint collection assembly 570. This achieves pressure relief while also preventing the wastewater from carrying filtered impurities with it.

[0206] In this embodiment, the pressure relief valve 590 is a normally closed valve, which can automatically open when the water pressure reaches a certain level, eliminating the need for additional control of the pressure relief valve.

[0207] Specifically, as shown in Figures 7 and 8, the pressure relief valve 590 includes a valve body 591, a valve plug 592, and a reset member 593. The valve body 591 is provided with a water inlet 5911 and a water outlet 5912. The valve plug 592 is reciprocally disposed within the valve body 591. The reset member 593 is used to apply a reset force to the valve plug 592 to keep the valve plug 592 blocking the water inlet 5911.

[0208] When the water pressure in the pressure relief branch 247 reaches a preset value, the valve plug 592 moves under the action of the water pressure to open the water inlet 5911. When the water pressure in the pressure relief branch 247 drops, the valve plug 592 returns to its original position under the action of the reset member 593 to block the water inlet 5911.

[0209] Furthermore, the valve body 591 has a certain extended length along the direction of the reciprocating motion of the valve plug 592, the water inlet 5911 is arranged at one end of the valve body 591 (i.e., the left end in Figure 7), and the water outlet 5912 is arranged on the side wall of the valve body 591 in an area close to the end where the water inlet 5911 is located.

[0210] Specifically, a valve seat 596 is provided at the right end of the valve body 591. The valve plug 592 is connected to a guide rod 597 extending left and right, and the guide rod 597 is slidably mounted on the valve seat 596. The reset member 593 is a compression spring, which is mounted on the guide rod 597. Its left end abuts the valve plug 592, and its right end abuts the valve seat 596. A raised stopper 595 is provided on the inner wall of the valve body 591 at the water inlet 5911. The stopper 595 surrounds the water inlet 5911, and the outer periphery of the left end surface of the valve plug 592 abuts against the stopper 595 to seal the water inlet 5911. A raised protrusion 594 is formed in the central area of ​​the left end surface of the valve plug 592, and the protrusion 594 extends outward from the water inlet 5911.

[0211] When there is no water in the pressure relief branch 247 or the water pressure is low, the reset member 593 pushes the valve plug 592 to seal and contact the limiting portion 595 at the water inlet 5911, thereby blocking the water inlet 5911. At this time, the pressure relief valve 590 is in a closed state, so that the pressure relief branch 247 is not conductive.

[0212] If a blockage occurs during the sewage flow into recovery device 500, the water pressure in sewage pipe 240 increases, causing the sewage to flow into pressure relief branch 247. Valve plug 592 in pressure relief valve 590 directly contacts the sewage in pressure relief branch 247. The water pressure acts on protrusion 594 of valve plug 592, generating rightward pressure. This overcomes the elastic force of return element 593, pushing valve plug 592 rightward and opening water inlet 5911, thereby connecting water inlet 5911 to water outlet 5912. At this point, pressure relief branch 247 is open, allowing sewage to flow directly into recovery device 500 along pressure relief branch 247.

[0213] After the pressure relief branch 247 is connected, the water pressure therein drops rapidly, and the water pressure force acting on the valve plug 592 decreases, which is less than the elastic force applied by the reset member 593. The valve plug 592 moves to the left and resets under the elastic force of the reset member 593, re-blocking the water inlet 5911, and the pressure relief valve 590 automatically returns to the closed state.

[0214] In a further embodiment of the present invention, a pressure detection element 245 is provided between the water inlet of the pressure relief branch 247 and the pressure relief valve 590 to detect the water pressure in the pressure relief branch 247. The pressure detection element 245 is connected to the control system of the washing machine. The washing machine can determine whether the pressure relief valve 590 is currently open based on whether the water pressure detected by the pressure detection element 245 reaches a preset value, thereby determining whether the lint collection assembly 570 in the recovery device 500 is clogged.

[0215] In the above solution, since pressure relief valve 590 automatically opens or closes based on changes in water pressure in pressure relief branch 247, it cannot directly provide feedback on its own open / closed state. To detect the open / closed state of pressure relief valve 590, a pressure detection element 245 is provided on pressure relief branch 247. By detecting the water pressure in pressure relief branch 247, it is determined whether pressure relief valve 590 is currently open. This simple structure allows for efficient acquisition of the open / closed state of pressure relief valve 590.

[0216] In a further solution of this embodiment, the sewage control valve 241 is specifically arranged between the water outlet end of the sewage pipeline 240 and the water inlet end of the pressure relief branch 247 .

[0217] When the filter device 600 is filtering the incoming water, the sewage control valve 241 is closed, and the pressure relief valve 590 remains closed, so that the sewage outlet 6103 of the filter device 600 is not connected to the recovery device 500. The filter device 600 can only filter the incoming water and then discharge it. When the filter device 600 needs to discharge sewage, the sewage control valve 241 is opened again, allowing the filter device 600 to discharge the sewage into the recovery device 500.

[0218] It should be noted that since the drain control valve 241 is located between the outlet of the drain pipe 240 and the inlet of the pressure relief branch 247, even when the drain control valve 241 is closed, the water pressure in the pressure relief branch 247 may be high. Therefore, in this embodiment, the pressure detection element 245 is controlled to operate only when the drain control valve 241 is open, detecting the water pressure in the pressure relief branch 247. This avoids the false judgment of lint collection assembly 570 being clogged due to the drain control valve 241 not being open when the filter device 600 is filtering.

[0219] In this embodiment, a pressure relief branch 247 is connected to the sewage pipe 240, and a pressure relief valve 590 is provided that automatically opens when the water pressure rises to a preset value. If the lint collection assembly 570 in the recovery device 500 becomes clogged, the pressure relief branch 247 can be opened through the pressure relief valve 590, allowing the sewage discharged from the filter device 600 to enter the recovery device 500 directly along the pressure relief branch 247. In this way, when the lint collection assembly 570 becomes clogged and the water pressure in the sewage pipe 240 becomes excessive, the automatic pressure relief function can be realized, thus preventing structural damage that may be caused by excessive water pressure.

[0220] Example 7

[0221] As shown in Figures 1 and 9 , this embodiment differs from the aforementioned sixth embodiment in that the outlet of pressure relief branch 247 no longer communicates with the recovery device 500 but instead communicates with the exterior of the filtration module. Specifically, in this embodiment, pressure relief branch 247 communicates with the external drainage pipe 250 of the washing equipment. During pressure relief, wastewater discharged from pressure relief branch 247 flows directly into external drainage pipe 250 and out of the washing equipment.

[0222] In this embodiment, the pressure relief valve 590 automatically opens and closes in response to the water pressure in the pressure relief branch 247. When the water pressure in the pressure relief branch 247 reaches a preset value, the pressure relief valve 590 opens to release the pressure, causing the water pressure in the pressure relief branch 247 to drop rapidly. The pressure relief valve 590 then closes again within a short period of time. During this process, although the wastewater discharged through the pressure relief branch 247 contains filtered impurities, the total amount of wastewater discharged is minimal, preventing the microplastic content in the wastewater from being excessively high and failing to meet emission standards.

[0223] Furthermore, the pressure sensing element 245 provided on the pressure relief branch 247 can provide real-time feedback on the water pressure in the pressure relief branch 247. When the filter device 600 is discharging wastewater while the circulating pump 400 is operating, if the water pressure detected by the pressure sensing element 245 exceeds a preset value and then drops, it indicates that the pressure relief valve 590 has been opened by the water pressure. The washing machine then controls the circulating pump 400 to stop operating and no longer direct water to the filter device 600.

[0224] In another solution of this embodiment, the pressure relief branch 247 can also directly lead to the outside of the washing equipment, instead of discharging the sewage to the outside through the external discharge pipe 250.

[0225] In this embodiment, pressure relief branch 247 is directly connected to the washing machine's external discharge pipe 250, or directly leads to the exterior of the washing machine, achieving pressure relief by discharging wastewater from the washing machine. Because pressure relief valve 590 automatically opens and closes under the influence of water pressure, the entire pressure relief process is very short, and the total amount of wastewater discharged to achieve pressure relief is relatively small. This achieves pressure relief and protects the filter module without causing excessive microplastic content in the washing machine's wastewater.

[0226] Example 8

[0227] As shown in FIG1 , FIG6 and FIG9 , this embodiment provides a control method for the washing device in the sixth or seventh embodiment above, comprising:

[0228] The washing equipment runs a washing program and performs an additional program of directing water to the filter device 600 for filtration;

[0229] Determine whether the recovery device 500 receiving sewage is blocked;

[0230] If a blockage occurs, the additional program will be stopped and the washing program will remain running.

[0231] In the above solution, if it is determined that the wastewater recovery unit 500 is clogged, and therefore the lint collection assembly 570 is clogged, only the additional program is stopped, while the wash cycle continues to run until completion. This avoids the problem of the filtration unit 600 being unable to continue filtering and draining wastewater, and allows the washing process to be completed without user intervention, achieving a higher level of automation. In particular, if the user is not waiting by the washing machine, the wash cycle will not be stopped due to a malfunctioning filtration module, thus avoiding user complaints caused by an incomplete wash cycle.

[0232] In the specific solution of this embodiment, stopping the execution of the additional program includes: in the process of subsequent running of the washing program, the circulation pump 400 is no longer turned on for circulation filtration, and the circulation pump 400 is only turned on for drainage filtration during the drainage stage.

[0233] Since the filter device 600 is arranged on the drainage route of the washing machine, the drainage water flow inevitably passes through the filter device 600. When the lint collecting assembly 570 in the recovery device 500 is clogged, the filter device 600 cannot drain the sewage, but the filtering function is not lost.

[0234] At this point, the washing machine no longer performs circulating filtration. Only when it reaches the drainage stage is the circulating pump 400 turned on for drainage filtration, and the drainage water can pass through the filter device 600 without being blocked. At the same time, since the filter device 600 no longer performs circulating filtration, the operating time of the filter device 600 is reduced, thereby avoiding the problem of excessive accumulation of filtered impurities in the filter device 600 during the drainage stage and causing clogging.

[0235] In a further solution of this embodiment, if it is determined that the recovery device 500 is not blocked in receiving sewage, the washing program continues to run and the running state of executing the additional program is maintained.

[0236] Specifically, the control method of the washing machine in this embodiment is shown in FIG10 , and includes the following steps:

[0237] S31, running the washing program;

[0238] S32, executing an additional procedure for guiding water to the filtration module for filtration;

[0239] S33, determining whether the recovery device 500 is blocked when receiving sewage;

[0240] S34. If a blockage occurs, stop executing the additional program; otherwise, continue executing the additional program;

[0241] S35: The washing program continues to run.

[0242] In step S33 , if the pressure detection element 245 detects that the water pressure reaches a preset value, it is determined that the recovery device 500 is blocked in receiving sewage.

[0243] Furthermore, in step S34, when it is determined that a blockage has occurred, after the water pressure detected by the pressure detection element 245 drops, the washing device also issues a prompt message to remind the user to clean the recovery device 500 after the current washing process is completed.

[0244] If the water pressure detected by pressure detection element 245 drops after reaching a preset value, it indicates that pressure relief valve 590 is currently open. This promptly reminds the user that lint collection assembly 570 in recovery device 500 is clogged during the current wash cycle and that pressure relief valve 590 is open to relieve pressure. This allows the user to clean lint collection assembly 570 in recovery device 500 after the current wash cycle is complete, ensuring that the filter module can function properly when the washing machine runs the next wash cycle. In particular, filter device 600 can successfully remove filtered impurities accumulated during the filtration process, ensuring effective filtration. This solves the problem of users being unable to determine the status of lint collection assembly 570 in recovery device 500 and subsequently forgetting to clean it.

[0245] In this embodiment, the washing machine can determine during operation whether the recovery device 500 is blocked while receiving wastewater. If the lint collection assembly 570 in the recovery device 500 is blocked and cannot continue to receive wastewater, the additional program is stopped while the washing program continues. This allows the washing machine to complete the current washing process without user intervention, achieving a higher level of automation. Based on the water pressure detected by the pressure detection element 245, the washing machine can determine whether the pressure relief valve 590 is open to relieve pressure. If the pressure relief valve 590 is opened, a prompt message is issued to remind the user to clean the recovery device 500 after the current washing process is completed. This ensures that the additional program can be executed normally to achieve the filtering function when the washing machine is operated again, ensuring the cleaning effect of the clothes.

[0246] Example 9

[0247] As shown in Figures 1 and 11, this embodiment differs from the aforementioned embodiments 1 to 8 in that the filter module is provided with a blockage detection device for detecting whether a blockage occurs during the process of the filter device 600 discharging sewage to the recovery device 500. The filter module can determine whether a blockage occurs during the process of the filter device 600 discharging sewage to the recovery device 500 based on the detection results of the blockage detection device.

[0248] Since the filter module is completely installed inside the washing machine, the user cannot directly observe the status of the filter module, especially the accumulation of filtered impurities, when using the washing machine. If there are too many filtered impurities, the filter device 600 may be unable to continue to discharge wastewater to the recovery device 500, and the filter module may no longer be able to perform its filtering function.

[0249] By installing the blockage detection device, the filter module can autonomously detect whether the sewage discharge process is blocked. By connecting the blockage detection device to the control system of the washing machine, the washing machine can respond promptly when sewage discharge is blocked. This avoids the situation where the user cannot directly observe the status of the filter module, resulting in the filter module being blocked and unable to perform the filtering function.

[0250] In a specific solution of this embodiment, the blockage detection device includes a flow detection device for detecting the flow rate of sewage discharged by the filter device 600. The blockage detection device determines whether the process of the filter device 600 discharging sewage to the recovery device 500 is blocked based on the flow rate of sewage discharged by the filter device 600.

[0251] Furthermore, in this embodiment, the sewage outlet 6103 of the filter device 600 is connected to the water inlet of the sewage pipe 240, and the water outlet of the sewage pipe 240 is connected to the recovery device 500. The flow detection device is a flow meter 243 provided on the sewage pipe 240.

[0252] Specifically, the control method for detecting whether a blockage occurs includes:

[0253] During the process of the filtration device 600 discharging sewage to the recovery device 500, the flow rate of the discharged sewage is detected;

[0254] If it is detected that the flow rate of the sewage discharged by the filter device 600 is lower than the preset flow rate, it is determined that the process of the filter device 600 discharging sewage to the recovery device 500 is blocked.

[0255] When the filter module is in normal working state, the filter device 600 discharges sewage into the recovery device 500, and the flow rate of the discharged sewage can be maintained at a certain level. However, when the following situations occur, the flow rate of the discharged sewage will decrease.

[0256] In the first scenario, when filter device 600 becomes clogged due to accumulation of filtered impurities, or when drainage pipe 240 is partially clogged due to accumulation of filtered impurities, the flow of wastewater from filter device 600 to recovery device 500 is blocked, resulting in a decrease in wastewater flow. If the washing machine detects that the wastewater flow rate has dropped below a preset flow rate, it indicates that filter device 600 or drainage pipe 240 is clogged, preventing wastewater from being discharged.

[0257] In the second case, a lint collection assembly 570 is provided in the recovery device 500 of this embodiment, which divides the interior of the recovery device 500 into a first chamber 531 and a second chamber 532, which are distributed vertically. The outlet end of the sewage pipe 240 is connected to the first chamber 531, and the sewage carrying filtered impurities enters the first chamber 531, is filtered by the filter screen of the lint collection assembly 570, and then enters the second chamber 532. The filtered impurities are collected in the first chamber 531, that is, collected on the upper surface of the lint collection assembly 570. The recovery device 500 can separate the filtered impurities from the sewage it receives through the lint collection assembly 570, making it convenient for users to directly process the collected filtered impurities, and avoiding the situation where the filtered impurities are mixed in the water and cannot be effectively processed.

[0258] However, when the lint collection assembly 570 in the recovery device 500 becomes clogged with filtered impurities, filtering of the received sewage becomes impossible. The sewage cannot pass through the lint collection assembly 570 and enter the second chamber 532, gradually filling the first chamber 531. When the first chamber 531 is full or nearly full of sewage, the subsequent sewage encounters greater resistance when entering the recovery device 500. If the filtration device 600 does not use additional driving force when discharging sewage into the recovery device 500, but relies solely on the sewage's own gravity to complete the sewage discharge operation, it will make it difficult for the sewage to enter the recovery device 500, resulting in a decrease in the sewage flow rate.

[0259] When the washing equipment detects that the sewage flow rate drops below the preset flow rate, it indicates that the lint collection assembly 570 is clogged, causing the first chamber 531 to be nearly full, and the filter device 600 can no longer drain water into the recovery device 500.

[0260] In the above scheme, the flow rate of sewage discharged by the filter device 600 directly reflects the ability of the filter device 600 to discharge sewage into the recovery device 500, which is an intuitive detection of whether the sewage discharge process is blocked. The detection structure and logic are simple, and the judgment of the blockage situation is accurate.

[0261] In a further embodiment of the present invention, the recycling device 500 includes a housing 510, and a lint collection assembly 570 installed at a certain height inside the housing 510 to filter the received sewage and collect filtered impurities. The lint collection assembly 570 can be a horizontally arranged frame and a filter screen laid on the frame.

[0262] When the filter module of this embodiment is installed in the washing machine, the housing 510 is installed in an insertable / removable manner on the washing machine housing 10. The upper side of the housing 510 has an opening, and the lint collection assembly 570 is detachably installed inside the housing 510. When it is necessary to clean the recovery device 500, especially the lint collection assembly 570 therein, the user can remove the housing 510 from the housing 10 through the opening on the upper side of the housing 510 and remove the lint collection assembly 570 from the interior of the housing 510 for cleaning. In this case, there is no need to completely remove the recovery device 500, which is more convenient to operate.

[0263] In this embodiment, a sewage control valve 241 is provided on the sewage pipe 240 to control the opening and closing of the sewage pipe 240. When the filter device 600 is filtering the incoming water, the sewage control valve 241 is closed, cutting off the sewage pipe 240, ensuring that the water entering the filter device 600 can flow out of the filtered water outlet 6102 after being filtered. When it is necessary to drain the sewage in the filter device 600, the sewage control valve 241 is opened to open the sewage pipe 240, and the sewage in the filter device 600 can be discharged into the recovery device 500.

[0264] The flow meter 243 is arranged between the water inlet end of the sewage pipe 240 and the sewage control valve 241. The flow meter 243 detects the flow of discharged sewage only when the sewage control valve 241 is in the open state, and then determines whether the sewage discharge process is blocked.

[0265] Preferably, a return water control valve 231 is provided outside the filtered water outlet 6102 of the filter device 600 to control whether the filtered water outlet 6102 can discharge water. When the filter device 600 is filtering incoming water, the return water control valve 231 is open. When the filter device 600 is controlling the discharge of wastewater, the return water control valve 231 is closed, preventing the filter device 600 from discharging water through the filtered water outlet 6102, thereby ensuring that wastewater within the filter device 600 is fully discharged through the wastewater outlet 6103.

[0266] In this embodiment, while the washing machine is running a washing program, an additional process of directing water to the filtration module for filtration is executed. Specifically, during the washing or rinsing phase, the switching device 270 directs the filtered water outlet 6102 of the filter device 600 to the return water line 230, and the circulation pump 400 is turned on for circulation filtration. During the drainage phase, the switching device 270 directs the filtered water outlet 6102 of the filter device 600 to the external discharge line 250, and the circulation pump 400 is turned on for drainage filtration. After each continuous filtration period, the filter device 600 performs a sewage discharge operation to discharge the sewage to the recovery device 500 to prevent the accumulation of excessive filtered impurities in the filter device 600.

[0267] During operation of the filtration module, the flow rate of wastewater discharged from the filter device 600 in the wastewater discharge line 240 can be detected by the flow meter 243, thereby determining whether there is any blockage in the process of the filter device 600 discharging wastewater to the recovery device 500. This facilitates the user to determine the current status of the filtration module when direct observation is not possible. The washing machine can also determine whether the filter device 600 is able to perform the wastewater discharge operation normally, so as to respond in a timely manner to prevent the filter device 600 from continuing to operate when it is unable to discharge wastewater. It can also prompt the user to clean the recovery device 500 in a timely manner to avoid affecting the next operation of the washing machine.

[0268] Example 10

[0269] As shown in Figures 1 and 12, this embodiment differs from the ninth embodiment described above in that the blockage detection device includes a water level detection device 580 for detecting water level information in the recovery device 500. The blockage detection device determines whether a blockage occurs in the process of the filter device 600 discharging sewage into the recovery device 500 based on the water level information in the recovery device 500.

[0270] Specifically, the recovery device 500 of this embodiment has a recovery chamber within the housing 510. A lint collection assembly 570 is disposed within the recovery chamber, forming a collection chamber for receiving wastewater. The outlet of the sewage pipe 240 is connected to the collection chamber. Sewage carrying filtered impurities enters the collection chamber, is filtered by the lint collection assembly 570, and flows into a recovery chamber outside the collection chamber, where the filtered impurities are collected.

[0271] The water level detection device 580 is disposed in the recovery chamber to detect the water level information outside the collection chamber in the recovery chamber. FIG12 shows a top view of the recovery device 500 in this embodiment. The water level detection device 580 is specifically disposed on the inner side of the side wall of the housing 510.

[0272] As a specific solution of this embodiment, the water level detection device 580 detects the water level height in the recovery device 500. If the water level height is greater than the preset water level, it is determined that the process of the filter device 600 discharging sewage to the recovery device 500 is blocked.

[0273] The preset water level can be set close to the overflow level of the recovery device 500. Specifically, when the water level in the recovery device 500 is detected to be greater than the preset level, the recovery device 500 is nearly full. At this point, the filtration device 600 continues to drain wastewater, making it difficult for wastewater to enter the recovery device 500, equivalent to a blockage in the wastewater discharge process. Even if the discharged wastewater does enter the recovery device 500, it will soon cause the recovery device 500 to overflow.

[0274] By detecting whether the water level in the recovery device 500 reaches the preset water level, it is determined whether the sewage discharge process of the filter device 600 is blocked. On the one hand, timely feedback can be given on the occurrence of blockage problems, and on the other hand, overflow of the recovery device 500 can be effectively prevented.

[0275] As another specific solution of this embodiment, the water level detection device 580 detects the water level change rate in the recovery device 500. If the water level change rate is less than the preset change rate, it is determined that the process of the filter device 600 discharging sewage to the recovery device 500 is blocked.

[0276] During normal discharge of wastewater from the filter device 600 to the recovery device 500, wastewater entering the collection chamber of the lint collection assembly 570 is quickly filtered and flows outside the collection chamber, causing the water level outside the collection chamber to gradually rise. However, if the lint collection assembly 570 becomes clogged with filtered impurities, the received wastewater cannot be filtered and flows outside the lint collection assembly 570, slowing or even stopping the rise in the water level outside the collection chamber, and significantly reducing the detected rate of change of the water level. Furthermore, if the filter device 600 or the sewage discharge line 240 becomes clogged, the flow of wastewater entering the recovery device 500 will be significantly reduced, and the detected rate of change of the water level will also decrease accordingly.

[0277] By detecting whether the water level change rate in the recovery device 500 is less than the preset change rate, it is determined whether the sewage discharge process of the filter device 600 is blocked, and the response to the blockage is timely and effective.

[0278] A specific structure of a water level detection device 580 in this embodiment is shown in Figure 13 . It includes several sets of water level probes 581 positioned at different heights within the recovery device. These probes 581 generate feedback signals when in contact with water. The water level detection device 580 also includes a stepped structure 582 having multiple stepped surfaces of varying heights, each of which is provided with a set of water level probes 581.

[0279] Furthermore, each set of water level probes 581 includes two electrodes spaced apart from each other, and a feedback signal is generated when the two electrodes are connected by water.

[0280] When the water level detection device 580 detects the water level, as the water level in the recovery device 500 rises, each time the water level passes through a step surface of the step structure 582, the lower ends of the two electrodes in a set of water level probes 581 on the corresponding step surface come into contact with the water, causing the two electrodes to conduct and generate a feedback signal. Based on the on / off status of each of the multiple sets of water level probes 581, the current water level in the recovery device 500 can be determined. The preset water level can be set to the height of the step surface corresponding to one set of water level probes 581. When a signal is received indicating that the electrodes of the set of water level probes 581 are conducting, the water level is determined to be greater than the preset water level.

[0281] The water level detection device 580 using the above structure can also obtain the time when the two electrodes in each group of water level probes 581 are turned on one by one as the water level height in the recovery device 500 continues to rise, and then calculate the water level change rate based on the time difference between the two electrodes in different water level probes 581 being turned on.

[0282] Alternatively, if, after the two electrodes in any set of water level probes 581 are connected, a set time passes, and the two electrodes in the adjacent, higher set of water level probes 581 are still disconnected, then the current water level change rate is determined to be less than the preset change rate. For example, if, after the two electrodes in one set of water level probes 581 are connected, a set time passes, and the two electrodes in the adjacent, higher set of water level probes 581 are still disconnected, then the current water level change rate is determined to be less than the preset change rate.

[0283] Another specific structure of water level detection device 580 is shown in Figure 14. This is an electrode-type water level detection device 583, which includes two electrode plates extending a certain length in the vertical direction and arranged opposite each other with a certain distance between them. The capacitance between the two electrode plates changes with the area of ​​the electrode plates immersed below the water surface.

[0284] As the water level in recovery device 500 changes, the area of ​​the two electrode sheets submerged below the liquid surface changes. This means that the area of ​​the opposing surfaces of the two electrode sheets covered by liquid changes. The two electrode sheets form a capacitor. This change is equivalent to the dielectric between the two electrodes changing from air to water, which in turn causes the capacitance between the two electrodes to change. The water level in recovery device 500 can be calculated based on the detected capacitance.

[0285] The water level detection device 580 of the above structure can, on the one hand, obtain the specific water level within the recovery device 500 in real time and determine whether the current water level has reached a preset level. On the other hand, the water level change rate can be calculated based on the real-time changes in the detected water level, thereby determining whether the water level change rate is lower than the preset change rate. This allows for more accurate water level detection within the recovery device 500.

[0286] In this embodiment, the filtration module is provided with a water level detection device 580 as a blockage detection device, which determines whether blockage occurs in the sewage discharge process of the filtration device 600 by detecting the water level information in the recovery device 500. The structure is simple and the feedback on the blockage problem is timely and effective.

[0287] Example 11

[0288] As shown in FIG. 1 and FIG. 15 , the difference between this embodiment and the above-mentioned embodiment 10 is that the specific structure of the recovery device 500 is different.

[0289] Specifically, in this embodiment, the structure of the recovery device 500 is similar to that of the ninth embodiment, and the interior of the recovery device 500 is divided into a first chamber 531 and a second chamber 532 distributed in an upper and lower manner by a lint collection assembly 570 provided at a certain height inside the shell 510. The outlet end of the sewage pipe 240 is connected to the first chamber 531, and the sewage carrying filtered impurities enters the first chamber 531, is filtered by the filter screen of the lint collection assembly 570, and then enters the second chamber 532. The filtered impurities are collected in the first chamber 531, that is, collected on the upper surface of the lint collection assembly 570. The recovery device 500 can separate the filtered impurities from the sewage it receives through the lint collection assembly 570, making it convenient for users to directly process the collected filtered impurities, and avoiding the situation where the filtered impurities are mixed in the water and cannot be effectively processed.

[0290] In a specific solution of this embodiment, the water level detection device 580 determines whether the process of the filter device 600 discharging sewage to the recovery device 500 is blocked by detecting whether the water level in the recovery device 500 is greater than a preset water level.

[0291] Specifically, the preset water level in this embodiment is higher than the installation height of the lint collection assembly 570. When the water level in the recovery device 500 is detected to have reached the preset level, one possibility is that the recovery device 500 is nearly full of sewage, preventing the sewage from entering the recovery device 500 when the filter device 600 continues to discharge sewage, causing a blockage. Another possibility is that the lint collection assembly 570 is covered with filtered impurities, causing a blockage. Sewage entering the first chamber 531 cannot be filtered and enter the second chamber 532 below, but remains in the first chamber 531, causing the water level to gradually reach the preset level.

[0292] Therefore, in the above scheme of this embodiment, the same judgment logic as that of Example 10 can still be used, that is, if it is detected that the water level in the recovery device 500 is greater than the preset water level, it is judged that the process of the filter device 600 discharging sewage to the recovery device 500 is blocked.

[0293] In another specific solution of this embodiment, the water level detection device 580 determines whether blockage occurs in the process of the filter device 600 discharging sewage to the recovery device 500 by detecting whether the water level change rate in the recovery device 500 is less than a preset change rate.

[0294] Specifically, the water level detection device 580 detects the rate of change of the water level in the second chamber 532. When the filter device 600 or the sewage pipe 240 is clogged with filtered impurities, the flow of sewage entering the recovery device 500 decreases. Consequently, the flow of water entering the second chamber 532 after being filtered by the lint collection assembly 570 also decreases, resulting in a decrease in the rate of change of the water level in the second chamber 532. Furthermore, when the lint collection assembly 570 is clogged with filtered impurities, sewage entering the first chamber 531 cannot be filtered and enter the second chamber 532 below, causing the rate of change of the water level in the second chamber 532 to decrease.

[0295] Therefore, in the above scheme of this embodiment, the same judgment logic as that of Example 10 can also be adopted, that is, if it is detected that the water level change rate in the recovery device 500 is less than the preset change rate, it is judged that the process of the filter device 600 discharging sewage to the recovery device 500 is blocked.

[0296] This embodiment uses a recovery device 500 with a different structure from the above-mentioned embodiment 10, and can still determine whether blockage occurs in the sewage discharge process of the filter device 600 by detecting water level information.

[0297] Example 12

[0298] As shown in FIG1 , this embodiment provides a control method for a washing device having the filter module in the above embodiment, including:

[0299] The washing equipment runs a washing program and performs an additional program of directing water to the filter module for filtration;

[0300] Determine whether the sewage discharge process of the filter device 600 is blocked;

[0301] If the drainage process is blocked, the additional program will be stopped and the washing program will remain running.

[0302] In the above solution, if the drainage process of filter device 600 is determined to be clogged, only the additional program is stopped, while the washing process continues to run until completion. This avoids various problems that may arise from continued filtration and allows the washing process to be completed without user intervention, achieving a higher level of automation. In particular, if the user is not waiting near the washing machine, the washing process will not be stopped due to the inability of filter device 600 to drain sewage, thus avoiding user complaints caused by the inability to complete the washing process.

[0303] In the specific solution of this embodiment, stopping the execution of the additional program includes: in the process of subsequent running of the washing program, the circulation pump 400 is no longer turned on for circulation filtration, and the circulation pump 400 is only turned on for drainage filtration during the drainage stage.

[0304] Because the filter device 600 is located on the drainage route of the washing machine, the drainage water inevitably passes through the filter device 600. In this embodiment, by adjusting the blockage determination conditions, such as the preset flow rate in the ninth embodiment, or the preset water level or preset change rate in the tenth and eleventh embodiments, when the additional program is stopped, even if the drainage process of the filter device 600 is blocked, the filtering function of the filter device 600 is not completely lost.

[0305] At this time, the washing equipment no longer performs circulation filtration. Only when it reaches the drainage stage, the circulation pump 400 is turned on to perform drainage filtration. The drainage water flow can pass through the filtering device 600 and will not be unable to be discharged.

[0306] In a further solution of this embodiment, if it is determined that no blockage occurs in the sewage discharge process, the washing program continues to run and the running state of executing the additional program is maintained.

[0307] Specifically, the control method of the washing machine in this embodiment is shown in FIG16 and includes the following steps:

[0308] S41, running the washing program;

[0309] S42, executing an additional procedure for guiding water to the filtration module for filtration;

[0310] S43, determining whether the sewage discharge process of the filter device 600 is blocked;

[0311] S44. If the sewage discharge process is blocked, stop executing the additional procedure; otherwise, continue executing the additional procedure;

[0312] S45: The washing program continues to run.

[0313] In a further embodiment of this embodiment, when the filter device 600 is detected as clogged during the drainage process, the washing machine also issues a prompt message, reminding the user to clean the recovery device 500 or perform maintenance on the filter device 600 after the current washing cycle is completed. This avoids the problem of the user being unable to detect a clogged drainage process in the filter device 600, and ensures that the filter module can function normally when the washing machine runs the next washing cycle. In particular, the filter device 600 can smoothly discharge the filtered impurities accumulated during the filtration process, thereby ensuring the filtration effect.

[0314] In this embodiment, when the washing machine detects the operating status of the filter module and determines that the drainage process of filter device 600 is clogged, it can stop executing the additional program while continuing the wash process. This allows the washing machine to complete the current wash cycle without user intervention, achieving a higher degree of automation. This also avoids the problem of pausing the wash process if the filter module fails, which could waste significant laundry time if the user fails to take timely action.

[0315] Example 13

[0316] As shown in Figures 1, 2, 5 to 9, and 11 to 15, the difference between this embodiment and the above embodiments is that the filtering capacity of the filter module is defined as the remaining number of uses of the filter module, and when the remaining number of uses drops to a preset number, the washing device sends an alarm signal.

[0317] Specifically, the recovery device 500 in this embodiment is integrated with the detergent dispensing device and can be located within the water tank of the detergent dispensing device. After the recovery device 500 filters the received wastewater, the filtered water enters the water tank. The water tank is connected to the water storage drum 100 of the washing machine, allowing the filtered water to be passed into the water storage drum 100.

[0318] The inside of the sink is provided with an insertable / removable dispenser box, which is formed with a detergent adding chamber and a recovery installation chamber which are isolated from each other. The detergent adding chamber and the recovery installation chamber are independently connected to the sink. The recovery device 500 is installed in the recovery installation chamber.

[0319] The user can remove the dispenser box, add detergent to the detergent adding chamber, and then reinsert the dispenser box into the sink. The washing machine will then automatically dispense the detergent in the detergent adding chamber into the water drum 100 during the washing process. When the recycling device 500 needs to be cleaned, the dispenser box is also removed to remove the lint collection assembly 570 in the recycling device 500 for cleaning.

[0320] In this embodiment, based on the ability of the recovery device 500 to collect filtered impurities, the maximum number of times the washing equipment can run the washing program from the initial state (i.e., the state of not collecting filtered impurities) to the state of being completely blocked by filtered impurities can be estimated.

[0321] Each time the washing machine runs a washing cycle, in this embodiment, the number of times the recovery device 500 has been used increases by one. The washing machine has a preset total number of times S that the recovery device 500 can be used starting from the initial state. The total number of times S is used is not higher than the maximum number of washing cycles that the washing machine can run. That is, before the number of times S1 of times the recovery device has been used reaches the total number of times S, the recovery device 500 will not be completely clogged by filtered impurities.

[0322] The remaining usable times of the filter module in this embodiment specifically refers to the remaining usable times of the recovery device 500 , that is, the difference between the total usable times S and the used times S1 .

[0323] Typically, each time a user draws the dispenser box, detergent is added to the dispenser box, and the washing machine runs a wash cycle. Therefore, in a further embodiment of this embodiment, the washing machine accumulates the number of times the dispenser box is drawn, using this as the number of times the recovery device 500 has been used (S1). The remaining number of uses of the recovery device 500 is calculated as S2 = S - S1, representing the remaining number of uses of the filter module. When the calculated number S2 falls below the preset number S0, the washing machine issues an alarm, prompting the user to clean the recovery device 500.

[0324] Through the above solution, the washing machine can automatically remind the user to clean the recovery device 500 in time to avoid the washing machine running the washing program when the recovery device 500 is blocked, resulting in the sewage in the filter device 600 being unable to be discharged, affecting the filtering effect during the washing process.

[0325] Specifically, in this embodiment, the preset number of times S0 is set to 0. When the user removes the dispenser box and the accumulated number of times S1 reaches S, that is, when S2 drops to 0, the washing machine issues an alarm. The user can then clean the recycling device 500 and reinsert the dispenser box into the water tank of the detergent dispenser.

[0326] Furthermore, in this embodiment, when the washing machine detects that the dispenser box is reinserted, the current accumulated number S1 is reset to zero, and when the washing machine detects that the dispenser box is withdrawn again, the accumulated number S1 is recorded as 1.

[0327] For example, the washing machine is preset to have a total number of uses S of 20. Each time the user pulls out the dispenser box, the number S2 counted by the washing machine decreases by one. When the user pulls out the dispenser box for the 20th time, the washing machine calculates S2 = 0 and issues an alarm signal. After the user cleans the recycling device 500 and reinserts the dispenser box, the current cumulative number S1 is reset to zero. When the washing machine detects that the dispenser box has been pulled out again, the current cumulative number S1 is recorded as 1. Of course, the preset value S for the total number of uses can also be other values, such as any value in the range of 10 to 30.

[0328] It should be noted that in this embodiment, after the washing machine issues an alarm signal and detects that the dispenser box has been reinserted, it directly resets the currently accumulated count S1 without checking whether the recovery device 500 has been cleaned. In other words, after the washing machine issues an alarm signal, the user will clean the recovery device 500 before reinserting the dispenser box into the sink.

[0329] However, since the washing machine in this embodiment does not accumulate the number of actual wash program runs, but rather the number of times the dispenser box is pulled, it is possible that a user pulls the dispenser box multiple times but only runs a wash program once. Alternatively, if the amount of lint shed by the user's laundry is relatively small, the cumulative number of times the user pulls the dispenser box S1 reaches S, meaning that the wash program has run S times, but the recovery device 500 still has a certain capacity and can continue to receive wastewater and collect filtered impurities in the wastewater.

[0330] In both cases, when the washing machine issues an alarm, the user can choose not to clean the recovery device 500 and directly reinsert the dispenser box into the water tank of the detergent dispenser to continue the next wash cycle. However, the washing machine will reset the current accumulated count S1 and will not trigger the alarm again until the dispenser box has been pulled out again and the count reaches S0.

[0331] However, since a certain amount of filtered impurities has already been collected in the recovery device 500, before the total number of wash cycles reaches S0, the recovery device 500 may become clogged with filtered impurities and unable to receive any further wastewater discharged by the filter device 600. However, since the accumulated number of times S1 has not reached S0, the washing machine will not sound an alarm.

[0332] To avoid the above problem, in a further solution of this embodiment, the washing machine can receive a user's instruction to adjust the total number of times the washing machine can be used, and adjust the value of the total number of times the washing machine can be used from a preset value S to S'.

[0333] Specifically, after the washing machine issues an alarm signal, if the user determines that the recovery unit 500 does not need to be cleaned, they can directly insert the dispenser box into the water tank of the detergent dispensing unit after completing the detergent dispensing operation. The user can then manually operate the washing machine to independently set the total number of uses based on the current amount of filtered impurities collected in the recovery unit 500. For example, if the preset value of the total number of uses is S = 20, the user can manually adjust it to S' = 5. In this way, the washing machine will re-accumulate the number of times the dispenser box has been pulled out. When the dispenser box is pulled out for the fifth time, the alarm condition S2 = S' - S1 = 0 is triggered, and the washing machine will issue an alarm signal.

[0334] In the above solution, the washing equipment provides an editable function for the total number of times the recovery device 500 can be used. If the user does not clean the recovery device 500 after the washing equipment alarms, the user can manually adjust the value of the total number of times it can be used to reduce the cumulative number of times the washing program is run before the washing equipment alarms, ensuring that the recovery device 500 will not be blocked during the operation of the washing program.

[0335] In a further solution of this embodiment, after the washing device receives the user's adjustment instruction to adjust the value of the total number of uses, if the cumulative number of times the dispenser box is pulled reaches the adjusted S', that is, the alarm condition of S2=0 is triggered, the washing device sends an alarm signal, and then the value of the total number of uses can be automatically restored to the preset value S, for example 20 times in this embodiment.

[0336] The user's ability to set the total number of uses typically occurs when the washing machine issues an alarm but the user hasn't cleaned the recovery unit 500. If the washing machine issues an alarm again, the recovery unit 500 is likely to be clogged, or at least nearly clogged, with filtered impurities, since the user didn't clean it during the previous alarm. Therefore, the user is likely to manually clean the recovery unit 500 when the alarm is issued again.

[0337] When the recycling device 500 is used again after cleaning, since no filtered impurities are collected therein, the total number of washing cycles is accumulated again. That is, until the cumulative number of uses of the recycling device 500 reaches the preset total number of uses S, the recycling device 500 will basically not become clogged. In this embodiment, the total number of uses is automatically restored to the preset value S, eliminating the need for manual user settings and preventing the washing machine from alarming when the recycling device 500 can still be used multiple times.

[0338] In the preferred solution of this embodiment, after the washing equipment detects that the dispenser box is pulled out and issues an alarm signal based on the adjusted total number of times that can be used S', before receiving the instruction to start the washing program, if no adjustment instruction for the total number of times that can be used is received, the value of the total number of times that can be used can be restored to the preset value S, otherwise the value of the total number of times that can be used can be determined based on the received adjustment instruction.

[0339] After the washing machine issues an alarm based on the adjusted total usable times value S', there may still be special circumstances such as the user's previously set value S' being inappropriate, resulting in the current recycling device 500 continuing to be used without cleaning. In the above scheme, when this happens, the user can continue to manually set the total usable times value. However, if the user starts the washing program without manually setting the total usable times value, it means that the user has cleaned the recycling device 500, and the washing machine automatically controls the total usable times value to return to the preset value S.

[0340] In this embodiment, the washing machine presets a total number of times the recovery device 500 can be used, and accumulates the number of times the recovery device 500 is pulled out along with the dispenser box of the detergent dispenser as the number of times the recovery device 500 has been used. When the number of times the recovery device 500 has been used reaches the preset number of times it can be used, the washing machine issues an alarm signal, reminding the user to clean the recovery device 500. This ensures that the recovery device 500 has sufficient capacity to receive the wastewater discharged by the filter device 600 and collect the filtered impurities therein when the washing machine is running a washing cycle.

[0341] Example 14

[0342] As shown in FIG1 , FIG2 , FIG5 to FIG9 , and FIG11 to FIG15 , this embodiment is a further limitation of any one of the above embodiments.

[0343] The washing device executes an additional program of guiding water to the filter module for filtration during the washing program, wherein the additional program is executed once each time the washing program is completed.

[0344] In this embodiment, the filtering capacity of the filtering module includes: the number of times the filtering module can continue to execute additional procedures in the current state until the filtering device 600 and / or the recovery device 500 are blocked.

[0345] The initial filtration capacity of the filtration module is at least 10 to 30 times, preferably 15 to 25 times. For example, the initial filtration capacity of the filtration module is at least 20 times, that is, when there is no filtered impurities attached to the filter device 600 and no filtered impurities and sewage are collected in the recovery device 500, the filtration module can completely perform the additional process in at least 20 consecutive washing processes without clogging.

[0346] In the above description of this embodiment, the “complete execution of the additional program” refers to performing circulation filtration according to the set duration in the washing stage and the rinsing stage, and performing drainage filtration in the drainage stage.

[0347] Each time the filter module completes the additional steps in a wash cycle, the washing machine records the filter module's current filtration capacity and subtracts one from the original filtration capacity. If the filter module's cycle filtration duration during this wash cycle is less than the set duration, the loss of filtration capacity during this wash cycle can be determined based on the ratio of the actual filtration duration to the set duration, thereby calculating the filter module's current filtration capacity.

[0348] In a preferred embodiment of the present invention, the filtering threshold is set to 1 or 2. When the current filtering capacity of the filtering module is lower than the filtering threshold, the water supply to the filtering module is stopped, and no circulating filtering is performed in the subsequent washing process.

[0349] In the above scheme, when the washing equipment calculates that the filtering capacity of the filter module is close to 0 but has not yet reached 0, it controls to stop directing water to the filter module, so as to avoid the deviation between the calculation of the filtering capacity and the current actual state of the filter module, resulting in the failure to timely control the stop of water diversion to the filter module before the filter module becomes blocked or fails.

[0350] In another preferred embodiment of this embodiment, the initial filtration capacity of the filtration module is denoted as X, and the filtration threshold is set to a value between X / 5 and X / 3. For example, if the initial filtration capacity of the filtration module is 20 times, the filtration threshold can be set to a value between 4 and 6 times. When the current filtration capacity of the filtration module falls below the filtration threshold, the frequency and / or duration of water diversion to the filtration module is reduced.

[0351] In the above scheme, the filtration threshold is set relatively high. Even if the washing machine's calculation of filtration capacity deviates from the actual current state of the filtration module, it is unlikely that the calculated filtration capacity will fall below the filtration threshold, indicating that the filtration module has become clogged or otherwise malfunctioned, thus affecting filtration effectiveness. In this case, by reducing the frequency and / or duration of water diversion to the filtration module and continuing the washing process, some filtration effectiveness can be maintained, improving the washing effect.

[0352] The specific method of reducing the frequency and / or duration of water diversion to the filter module has been described in detail in the above embodiments and will not be repeated in this embodiment.

[0353] In a further embodiment of this embodiment, the filter device 600 filters the wash water and washing equipment drainage to remove impurities larger than 50 μm. These impurities may include microplastics. Specifically, these impurities may include plastic fibers larger than 50 μm in length and between 10 and 1000 μm in diameter. Preferably, the plastic fibers are between 400 and 600 μm in length, with the most common length distribution being between 500 μm ± 50 μm. These plastic fibers preferably have a diameter between 10 and 50 μm, with the most common diameter being 17 μm ± 2 μm.

[0354] To achieve the filtration and removal of microplastics of the above-mentioned sizes, the filter mesh in the filter device 600 is selected to have a mesh size of 20 to 500. In order to ensure that the recovery device 500 can collect the microplastics carried in the sewage as fully as possible and prevent the problem of microplastics filtered out by the filter device 600 passing through the lint collection assembly 570 in the recovery device 500, the pore size of the filter mesh in the lint collection assembly 570 is at least not larger than the pore size of the filter mesh in the filter device 600, that is, the mesh size of the filter mesh in the lint collection assembly 570 is not less than the mesh size of the filter mesh in the filter device 600, which is 20 to 500 mesh.

[0355] In this embodiment, by conducting a large number of tests on different types of clothing and different washing procedures in advance, it was found that by setting the mesh size of the filter in the lint collection assembly 570 and the mesh size of the filter in the filter device 600 within the above range, plastic fibers of the above sizes can be filtered out from the washing water and the drainage of the washing equipment, and finally microplastic particles accounting for more than 80% of the total content in the water can be collected in the recovery device 500, so that the microplastic content in the drainage water flow of the final washing equipment is greatly reduced and can meet the direct discharge standard.

[0356] In this embodiment, since the filter device 600 has a self-cleaning function, the loss of the filter module's filtering capacity is primarily reflected in the recovery device 500. For example, as the total amount of filtered impurities collected in the recovery device 500 increases, the lint collection assembly 570 is gradually covered by the filtered impurities. The filtered impurities clog the mesh of the filter screen, causing the lint collection assembly 570 to be unable to filter the sewage.

[0357] In this embodiment, a large number of tests are conducted on different types of clothing and different washing programs in advance, and the structure of the lint collection component 570 is adjusted to change the maximum amount of filtered impurities it can collect. This allows the filter module to fully execute additional programs in at least 10 to 30 consecutive washing programs without the user cleaning the recovery device 500, thereby ensuring the user experience.

[0358] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A filtering module, characterized in that: include: A filter device is provided with a sewage outlet for discharging sewage carrying filtered impurities; A recovery device is connected to the sewage outlet of the filter device, and the recovery device is provided with at least two sets of lint collection components; Each group of lint collecting components receives sewage discharged from the filtering device independently and / or together and collects filtered impurities in the sewage.

2. The filter module according to claim 1, characterized in that Each group of lint collecting components has a collecting cavity for collecting filtered impurities, and each collecting cavity is communicated with a sewage outlet of the filtering device.

3. The filter module according to claim 2, characterized in that It also includes a sewage discharge pipeline, the water inlet end of the sewage discharge pipeline is connected to the sewage discharge port of the filter device, and the water outlet end is connected to one of the collection chambers; the sewage discharge branch is connected between the water inlet end and the water outlet end of the sewage discharge pipeline, and the water outlet end of the sewage discharge branch is connected to other collection chambers.

4. The filter module according to claim 3, characterized in that A branch control valve is provided on the sewage branch to control the on and off of the sewage branch.

5. The filter module according to claim 4, characterized in that A pressure detection element for detecting the water pressure in the sewage branch line is provided between the water inlet end of the sewage branch line and the branch line control valve.

6. The filter module according to claim 5, characterized in that The initial state of the branch control valve is a closed state, and whether to open the branch control valve is determined according to the water pressure detected by the pressure detection element.

7. The filter module according to any one of claims 3 to 6, characterized in that: The sewage pipe is provided with a sewage control valve for controlling the on-off of the sewage pipe.

8. The filter module according to claim 7, characterized in that The sewage control valve is arranged between the water outlet end of the sewage pipeline and the water inlet end of the sewage branch line.

9. The filter module according to any one of claims 2 to 8, characterized in that: The recycling device comprises a shell, the interior of the shell has a main cavity, and the lint collecting assembly is arranged in the main cavity; The sewage carrying the filtered impurities enters the collection chamber of the lint collecting assembly, is filtered by the lint collecting assembly and flows into the main chamber outside the collection chamber, where the filtered impurities are collected.

10. A filtering module, characterized in that: include: A filter device is provided with a sewage outlet for discharging sewage carrying filtered impurities; A recovery device, connected to the sewage outlet of the filtering device, to receive sewage discharged from the filtering device; The pressure relief device is arranged between the sewage outlet of the filtering device and the recovery device, and is used to relieve pressure when the sewage entering the recovery device is blocked.

11. The filter module according to claim 10, characterized in that The pressure relief device includes a pressure relief branch and a pressure relief valve arranged on the pressure relief branch; the water inlet end of the pressure relief branch is connected between the sewage outlet of the filtering device and the recovery device, the pressure relief valve is opened to connect the pressure relief branch, and the sewage discharged from the filtering device enters the pressure relief branch to achieve pressure relief.

12. The filter module according to claim 11, characterized in that The pressure relief valve comprises: The valve body is provided with a water inlet and a water outlet; A valve plug is reciprocatingly disposed in the valve body; a reset member, applying a reset force to the valve plug to keep the valve plug sealing the water inlet; When the water pressure in the pressure relief branch reaches a preset value, the valve plug moves under the action of the water pressure to open the water inlet; when the water pressure in the pressure relief branch drops, the valve plug resets and blocks the water inlet under the action of the reset member.

13. The filter module according to claim 12, characterized in that The valve body has a certain extension length along the direction of the reciprocating motion of the valve plug. The water inlet is arranged at one end of the valve body, and the water outlet is arranged on the side wall of the valve body in an area close to the end where the water inlet is located.

14. The filter module according to claim 11, characterized in that A pressure detection element for detecting the water pressure in the pressure relief branch is provided between the water inlet end of the pressure relief branch and the pressure relief valve.

15. The filter module according to any one of claims 11 to 14, characterized in that: It also includes a sewage pipeline, the water inlet end of the sewage pipeline is connected to the sewage outlet of the filtering device, the water outlet end is connected to the recovery device, and the water inlet end of the pressure relief branch is connected to the sewage pipeline; a sewage control valve for controlling the on and off of the sewage pipeline is provided on the sewage pipeline.

16. The filter module according to claim 15, characterized in that The sewage control valve is arranged between the water outlet end of the sewage pipeline and the water inlet end of the pressure relief branch.

17. The filter module according to any one of claims 10 to 16, characterized in that: The recovery device comprises: a housing having a recovery chamber therein; The lint collecting assembly is arranged in the recovery chamber to form a collection chamber for receiving sewage. The sewage carrying filtered impurities enters the collection chamber, is filtered by the lint collecting assembly, and flows into the recovery chamber outside the collection chamber. The filtered impurities are collected in the collection chamber. The pressure relief device relieves pressure when the wire chip collecting assembly is clogged by filtered impurities.

18. The filter module according to claim 17, characterized in that The pressure relief device includes a pressure relief branch, the water inlet end of which is connected between the sewage outlet of the filter device and the recovery device; The water outlet end of the pressure relief branch is communicated with the external space, or the water outlet end of the pressure relief branch is communicated with the recovery chamber outside the collection chamber.

19. A filtering module, characterized in that: include: A filter device is provided with a sewage outlet for discharging sewage carrying filtered impurities; a recovery device, connected to the sewage outlet of the filtering device, and used for receiving sewage discharged from the filtering device; The blockage detection device is used to detect whether blockage occurs in the process of the filtering device discharging sewage to the recovery device.

20. The filter module according to claim 19, characterized in that The blockage detection device includes a flow detection device for detecting the flow of sewage discharged by the filter device; the blockage detection device determines whether blockage occurs in the process of the filter device discharging sewage to the recovery device based on the flow of sewage discharged by the filter device.

21. The filter module according to claim 20, characterized in that It also includes a sewage pipeline, the sewage outlet of the filtering device is connected to the water inlet end of the sewage pipeline, and the water outlet end of the sewage pipeline is connected to the recovery device; the flow detection device is arranged on the sewage pipeline.

22. The filter module according to claim 19, characterized in that The blockage detection device includes a water level detection device for detecting water level information in the recovery device; the blockage detection device determines whether blockage occurs in the process of the filter device discharging sewage to the recovery device based on the water level information in the recovery device.

23. The filter module according to claim 22, characterized in that The water level detection device includes a plurality of water level probes arranged at different heights inside the recovery device. The water level probes come into contact with water to generate feedback signals.

24. The filter module according to claim 23, characterized in that A set of water level probes includes two electrodes spaced apart from each other, which generate a feedback signal when the two electrodes are connected by water.

25. The filtration module according to claim 22, characterized in that The water level detection device includes two electrode sheets extending a certain length in the vertical direction, and the two electrode sheets are arranged opposite to each other at a certain interval; the capacitance value between the two electrode sheets changes with the area of ​​the electrode sheets immersed below the water surface.

26. The filter module according to any one of claims 22 to 25, characterized in that: The recovery device comprises: a housing having a recovery chamber therein; The lint collecting assembly is arranged in the recovery chamber to form a collection chamber for receiving sewage. The sewage carrying filtered impurities enters the collection chamber, is filtered by the lint collecting assembly, and flows into the recovery chamber outside the collection chamber. The filtered impurities are collected in the collection chamber. The water level detection device is arranged in the recovery chamber to detect the water level information outside the collection chamber.

27. A method for controlling a filter module according to any one of claims 19 to 26, characterized in that: Whether blockage occurs in the process of the filter device discharging sewage to the recovery device is determined based on the detection result of the blockage detection device.

28. The control method of the filter module according to claim 27, characterized in that: The blockage detection device includes a flow detection device for detecting the flow rate of the sewage discharged by the filter device; if it is detected that the flow rate of the sewage discharged by the filter device is lower than the preset flow rate, it is determined that the process of the filter device discharging sewage to the recovery device is blocked; Alternatively, the blockage detection device includes a water level detection device for detecting water level information in the recovery device; if it is detected that the water level height in the recovery device is greater than a preset water level, or it is detected that the water level change rate in the recovery device is less than a preset change rate, it is judged that the process of the filtering device discharging sewage to the recovery device is blocked.

29. A washing device comprising a water container, characterized in that: It also includes the filter module according to any one of claims 1 to 26, wherein the filter device of the filter module is connected to the water storage cylinder.

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