Washing machine and control method thereof

Abstract

In the washing machine and the control method thereof, the washing machine comprises a water tank (100), a circulation filtration pipe having a water inlet end and a water outlet end each connected to the water tank (100), a filter device (600) provided in the circulation filtration pipe and having a water inlet (6101), a filtered water outlet (6102), and a polluted water outlet (6103), a polluted water outlet pipe (240) for receiving polluted water discharged from the polluted water outlet (6103), and a circulation filter. and a control valve assembly (700) provided between the water inlet end of the filtering line and the filtration device (600), comprising a first valve chamber (711) and a second valve chamber (712) which are independent of each other, the first valve chamber (711) connecting the water tank (100) and the water inlet (6101) of the filtration device (600), and the second valve chamber (712) connecting the polluted discharge line (240) and the polluted discharge outlet (6103) of the filtration device (600). The control valve assembly (700) has a first operating state in which the water tank (100) is connected to the water inlet (6101) and the pollutant outlet (6103) is connected to the pollutant outlet line (240) and a second operating state in which the water tank (100) is connected to the water inlet (6101) and the pollutant outlet (6103) is connected to the pollutant outlet line (240). The entire control valve assembly (700) can simultaneously control the opening and closing of two independent water passages. This structure is simple and reduces costs.

Description

[Technical Field]

[0001] The present invention relates to the technical field of washing machines, and more particularly to a washing machine and a control method thereof. [Background technology]

[0002] During the washing process of clothes in a washing machine, friction occurs between the clothes and between the clothes and the washing machine itself, causing lint to fall off the clothes and become mixed into the wash water. If the lint in the wash water cannot be removed, it will likely adhere to the surface of the clothes after washing is complete, affecting the washing effect of the clothes. For this reason, conventional washing machines are equipped with a filter to filter out lint, and the wash water is constantly passed through the filter during the washing process to remove lint from the wash water.

[0003] Generally, filters in conventional washing machines are installed inside the inner tub or drain pump and are used to filter lint and other foreign matter from the wash water. However, over time, the filter becomes filled with lint and other foreign matter, affecting the filter's filtering effect. This can clog the drain valve / drain pump and make it easy for bacteria to grow. If not cleaned immediately, the wash water can become contaminated, causing secondary contamination of clothes and endangering the user's health. However, most washing machines require users to remove the filter and clean it manually, which is inconvenient.

[0004] Therefore, in the prior art, filtration devices with an automatic cleaning function have been provided, but in order to discharge wastewater after cleaning, a corresponding piping structure must be added. Furthermore, when the filter is installed inside the drain pump or outside the outer tub, a circulation pipe must be installed inside the washing machine to circulate the wash water and filter it. This further complicates the waterway structure inside the washing machine, which in turn occupies a large amount of space inside the washing machine, thereby affecting the volume of clothes that the washing machine can accommodate.

[0005] Furthermore, as the waterway structure becomes more complex, controlling the opening and closing of the waterways becomes more complicated and cumbersome. If a control valve is provided for each waterway that requires control, the control valve must be driven to open and close, which requires an increased number of drive devices on the washing machine, increasing production costs. In addition, if each control valve is controlled individually, the wiring inside the washing machine becomes more complicated, making assembly more difficult and the control logic more complex.

[0006] In view of the above, the present invention is proposed. Summary of the Invention [Problem to be solved by the invention]

[0007] The technical problem that the present invention aims to solve is to provide a washing machine and a control method thereof that overcomes the defects of the prior art by providing a control valve assembly that can simultaneously control the opening and closing between the water tank and the water inlet of the filter device, and the opening and closing between the pollutant discharge port of the filter device and the pollutant discharge pipe, thereby realizing switching of the filter device between two operating processes, namely filtration and pollutant discharge, and simplifying the control structure of the water channel. [Means for solving the problem]

[0008] In order to solve the above technical problems, the basic idea of ​​the technical solution adopted in the present invention is as follows.

[0009] The washing machine includes a water tank, a circulation filtration pipe whose water inlet end and water outlet end are connected to the water tank, a filter device provided in the circulation filtration pipe and having a water inlet, a filtered water outlet, and a polluted water outlet, and a polluted water outlet pipe for receiving polluted water discharged from the polluted water outlet.

[0010] The system further includes a control valve assembly provided between the water inlet end of the circulating filtration pipe and the filtration device, the control valve assembly having a first valve chamber and a second valve chamber that are independent of each other. The first valve chamber connects the water tank with the water inlet of the filtration device, and the second valve chamber connects the polluted discharge pipe with the polluted discharge outlet of the filtration device.

[0011] The control valve assembly has a first operating state in which the water tank and the water inlet are connected and the pollutant outlet and the pollutant discharge line are blocked, and a second operating state in which the water tank and the water inlet are connected and the pollutant outlet and the pollutant discharge line are connected.

[0012] The control valve assembly further includes a valve body, within which a first valve chamber and a second valve chamber are formed that are independent of each other.

[0013] The first valve chamber has a water inlet communicating with the water tank and a circulating water outlet communicating with the water inlet, while the second valve chamber has a sewage inlet communicating with the pollutant discharge port and a sewage outlet communicating with the pollutant discharge pipeline.

[0014] A switching mechanism is provided within the valve body. In a first operating state, the switching mechanism opens the circulating water outlet and closes the wastewater inlet and / or the wastewater outlet. In a second operating state, the switching mechanism closes the circulating water outlet and opens the wastewater inlet and the wastewater outlet.

[0015] Preferably, the wastewater outlet is normally open. In a first operating state, the switching mechanism closes the wastewater inlet, and in a second operating state, the switching mechanism opens the wastewater inlet.

[0016] The washing machine further includes an external drain pipe for draining water to the outside. The first valve chamber is further provided with a drain outlet communicating with the external drain pipe.

[0017] In a first operating state, the switching mechanism closes the drain outlet, and in a second operating state, the switching mechanism opens the drain outlet.

[0018] Furthermore, the switching mechanism includes a flap that is rotatably attached inside the valve body and has a first surface and a second surface that face away from each other, a drainage seal member that is provided on the first surface of the flap and is located inside the first valve chamber and is used to block the drainage outlet, a pollution discharge seal member that is provided on the first surface of the flap and is located inside the second valve chamber and is used to block the sewage inlet, and a circulation seal member that is provided on the second surface of the flap and is located inside the first valve chamber and is used to block the circulating water outlet.

[0019] The waste water outlet and the waste water inlet are located on the same side of the valve body. In a first operating state, the waste water seal member and the contamination discharge seal member respectively close the waste water outlet and the waste water inlet. In a second operating state, the flap rotates away from the waste water outlet and the waste water inlet until the circulation seal member closes the circulating water outlet.

[0020] Furthermore, the first valve chamber and the second valve chamber both have a certain extension length, and the extension directions of the respective lengths are parallel to each other.

[0021] The drain outlet is provided in a chamber wall at an end surface in the direction of extension of the length of the first valve chamber, and the wastewater inlet is provided in a chamber wall at an end surface in the same direction of the second valve chamber.

[0022] Preferably, the water inlet is provided in a chamber wall on another end face of the first valve chamber and is parallel to and opposite to the direction of the wastewater outlet, and the wastewater outlet is provided in a chamber wall on another end face of the second valve chamber and is parallel to and opposite to the direction of the wastewater inlet.

[0023] Furthermore, the circulating water outlet and the waste water outlet are oriented perpendicular to each other, and when the control valve assembly is switched from the first operating state to the second operating state, the flap rotates 90° around the rotation axis.

[0024] Preferably, the circulating water outlet is provided in a side chamber wall in the direction of extension of the length of the first valve chamber, and the side chamber wall on which the circulating water outlet is located is adjacent to the side chamber wall of the second valve chamber.

[0025] Furthermore, the switching mechanism also includes a drive member for rotating the flap within the valve body.

[0026] Preferably, the drive member includes a drive motor provided outside the valve body.

[0027] Furthermore, a circulation pump is provided between the water inlet end of the circulation filtration line and the control valve assembly.

[0028] Another object of the present invention is to provide a method for controlling the above-mentioned washing machine, wherein when the control valve assembly is switched to a first operating state, water in the water tank passes through the first valve chamber and enters the filtration device for filtration, and the filtered water returns to the water tank.

[0029] When the control valve assembly is switched to the second operating state, the wastewater in the filter device is discharged into the polluted discharge line via the second valve chamber.

[0030] The washing machine further includes an external drain pipe for draining water to the outside. The first valve chamber is provided with a circulating water outlet communicating with the water inlet and a drain outlet communicating with the external drain pipe.

[0031] When the control valve assembly is switched to the first operating state, the circulating water outlet is opened and the drain outlet is closed, allowing water in the water tank to be introduced into the first valve chamber, discharged through the circulating water outlet, and enter the filtration device.

[0032] When the control valve assembly is switched to the second operating state, the circulating water outlet is blocked and the drain outlet is opened, allowing water in the water tank to be introduced into the first valve chamber, discharged through the drain outlet, and then discharged from the washing machine via the external discharge pipe. [Effects of the Invention]

[0033] By using the above technical solutions, the present invention has the following beneficial effects compared with the prior art:

[0034] In the present invention, a washing machine is provided with a control valve assembly. The control valve assembly can be switched between a first operating state and a second operating state to simultaneously control two independent water channels: one between the water tank and the water inlet of the filter device, and the other between the filter device's pollutant outlet and the pollutant discharge pipe, thereby switching the filter device between two operating processes: filtering and pollutant discharge. This simplifies the control structure of the water channels within the washing machine, which is advantageous for reducing production costs.

[0035] In the present invention, the valve element of the control valve assembly is provided with multiple openings for allowing water to flow in and out. These openings are connected to the corresponding first and second valve chambers, respectively. The switching mechanism can simultaneously switch the multiple openings between open and closed states by moving flaps with a single drive motor. This simple structure allows for simultaneous drainage of water from the water tank to the outside and discharge of wastewater from the filter device to the outside, improving the operating efficiency of the washing machine.

[0036] Specific embodiments of the present invention will be described in more detail below in conjunction with the drawings.

[0037] The drawings are used as part of the present invention for further understanding of the present invention. Furthermore, the schematic embodiments of the present invention and their explanations are used for interpreting the present invention, but do not unduly limit the present invention. It goes without saying that the drawings described below are only a part of the embodiments, and those skilled in the art can obtain other drawings from these drawings without requiring creative work. [Brief explanation of the drawings]

[0038] [Figure 1] FIG. 1 is a schematic structural diagram of the communication of water passages in a first operating state of a control valve assembly according to an embodiment of the present invention. [Figure 2]FIG. 2 is a schematic structural diagram of the communication of the water passages in the second operating state of the control valve assembly in the embodiment of the present invention. [Figure 3] FIG. 3 is a schematic structural diagram of a control valve assembly in an embodiment of the present invention (second operating state). [Figure 4] FIG. 4 is a schematic view of the AA cross section of FIG. 3 according to the present invention. [Figure 5] FIG. 5 is a schematic structural diagram of a washing machine according to an embodiment of the present invention. [Figure 6] FIG. 6 is a schematic enlarged view of part B of FIG. 5 according to the present invention. [Figure 7] FIG. 7 is a schematic structural diagram of a filtering device according to a third embodiment of the present invention. [Figure 8] FIG. 8 is a schematic view of the CC cross section of FIG. 7 according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0039] It should be explained that these drawings and written descriptions are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art with reference to specific embodiments.

[0040] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and concisely describe the technical solutions of the embodiments in combination with the drawings in the embodiments of the present invention, which are for the purpose of illustrating the present invention but are not intended to limit the scope of the present invention.

[0041] In describing the present invention, it should be noted that directions or positional relationships indicated by terms such as "upper," "lower," "front," "rear," "left," "right," "vertical," "inner," and "outer" are directions or positional relationships based on the drawings, and are merely for the convenience and simplification of the description of the present invention, and do not explicitly or implicitly indicate that the subject devices or components have a specific direction and must be constructed and operated in a specific direction, and therefore should not be construed as limiting the present invention.

[0042] In describing the present invention, it is to be understood that unless otherwise clearly defined and limited, the terms "attach" and "connect" should be interpreted broadly. For example, they may be fixedly connected, detachably connected, or integrally connected. They may also be directly connected or indirectly connected via an intermediate medium. Those skilled in the art can interpret the specific meanings of the above terms in the present invention according to the specific circumstances. [Example]

[0043] As shown in Figures 1 to 5, the washing machine described in this embodiment includes a water tank 100, a circulation filtration pipe having a water inlet end and a water discharge end each connected to the water tank 100, a filtration device 600 provided in the circulation filtration pipe and having a water inlet 6101, a filtered water outlet 6102, and a polluted discharge outlet 6103, a polluted discharge pipe 240 for receiving polluted water discharged from the polluted discharge outlet 6103, and a control valve assembly 700 provided between the water inlet end of the circulation filtration pipe and the filtration device 600 and including a first valve chamber 711 and a second valve chamber 712 which are independent of each other, the first valve chamber 711 connecting the water tank 100 and the water inlet 6101 of the filtration device 600, and the second valve chamber 712 connecting the polluted discharge pipe 240 and the polluted discharge outlet 6103 of the filtration device 600.

[0044] The control valve assembly 700 of this embodiment has two different operating states: a first operating state that opens the water tank 100 and the water inlet 6101 and blocks the pollutant outlet 6103 and the pollutant discharge pipeline 240, and a second operating state that blocks the water tank 100 and the water inlet 6101 and opens the pollutant outlet 6103 and the pollutant discharge pipeline 240.

[0045] In this embodiment, a circulation pump 400 is further provided between the water inlet end of the circulation filtering line and the control valve assembly 700. In addition, the control method of the washing machine includes the following.

[0046] When the control valve assembly 700 is switched to the first operating state and the circulation pump 400 is started, the water in the water tank 100 passes through the first valve chamber 711 and enters the filtration device 600 to be filtered. The filtered water then returns to the water tank 100.

[0047] When the control valve assembly 700 is switched to the second operating state, the wastewater in the filter device 600 is discharged into the polluted discharge line 240 via the second valve chamber 712 .

[0048] In the above solution, the control valve assembly 700 can simultaneously control the opening and closing of the connection between the water tank 100 and the water inlet 6101 of the filter 600, and the opening and closing of the connection between the pollutant discharge port 6103 of the filter 600 and the pollutant discharge pipe 240. By switching the operating state of the control valve assembly 700, the filter 600 can be switched between two operating processes, namely, filtering and pollutant discharge. The control valve assembly 700 can simultaneously control the opening and closing of two independent water channels. This is advantageous in simplifying the layout of the water channel structure inside the washing machine and in simplifying the control logic for opening and closing the water channels.

[0049] In this embodiment, the control valve assembly 700 includes a valve body 710. Inside the valve body 710, a first valve chamber 711 and a second valve chamber 712 are formed which are independent of each other.

[0050] The first valve chamber 711 is provided with a water inlet 701 communicating with the water tank 100 and a circulating water outlet 702 communicating with the water inlet 6101. The second valve chamber 712 is provided with a wastewater inlet 704 communicating with the pollutant discharge outlet 6103 and a wastewater outlet 705 communicating with the pollutant discharge pipeline 240.

[0051] A switching mechanism 720 is provided within the valve body 710. In a first operating state, the switching mechanism 720 opens the circulating water outlet 702 and closes the wastewater inlet 704 and / or the wastewater outlet 705. In a second operating state, the switching mechanism 720 closes the circulating water outlet 702 and opens the wastewater inlet 704 and the wastewater outlet 705.

[0052] In a preferred embodiment of the present invention, the wastewater outlet 705 is normally open. In a first operating state, the switching mechanism 720 closes the wastewater inlet 704, and in a second operating state, the switching mechanism 720 opens the wastewater inlet 704.

[0053] Specifically, the control valve assembly 700 has a dividing section provided within the valve disc 710, dividing the internal space of the valve disc 710 into a first valve chamber 711 and a second valve chamber 712 that are independent of each other. The switching mechanism 720 passes through the first valve chamber 711 and the second valve chamber 712, thereby achieving simultaneous control of these chambers. Because the switching mechanism 720 must move within the valve disc 710, over long periods of use of the control valve assembly 700, the sealing performance at the position where the switching mechanism 720 passes through the first valve chamber 711 and the second valve chamber 712 may deteriorate, potentially causing leakage between the first valve chamber 711 and the second valve chamber 712.

[0054] In this embodiment, the wastewater outlet 705 is normally open, and the switching mechanism 720 opens / closes the wastewater inlet 704, thereby controlling whether the filtration device 600 can discharge wastewater into the polluted discharge pipeline 240. When the control valve assembly 700 is in the first operating state, water in the water tank 100 enters the first valve chamber 711. Even if water leaks from the first valve chamber 711 toward the second valve chamber 712, the wastewater inlet 704 is closed, so the polluted discharge outlet 6103 and the second valve chamber 712 are not in communication, and water flow does not enter the filtration device 600 from the polluted discharge outlet 6103.

[0055] In a specific embodiment of this embodiment, the filtration device 600 includes a filtration chamber 610 having a water inlet 6101, a filtered water outlet 6102, and a pollutant outlet 6103, a filtration mechanism 620 rotatably mounted inside the filtration chamber 610, and a driving mechanism 660 connected to the filtration mechanism 620 to rotate the filtration mechanism 620 within the filtration chamber 610.

[0056] The filtering mechanism 620 divides the interior of the filtering chamber 610 into an outer storage chamber and an inner storage chamber. The water inlet 6101 communicates with the outer storage chamber, and the filtered water outlet 6102 communicates with the inner storage chamber. When the control valve assembly 700 is switched to the first operating state, the water in the water tank 100 flows through the water inlet 6101 into the outer storage chamber under the action of the circulation pump 400, passes through the filtering mechanism 620, and enters the inner storage chamber, thereby achieving filtration. Note that lint contained in the water adheres to the outer wall of the filtering mechanism 620.

[0057] The drive mechanism 660 rotates the filtering mechanism 620, thereby agitating the water flow within the filtering chamber 610. As a result, lint adhering to the outer wall of the filtering mechanism 620 is peeled off by the combined effects of centrifugal force and the turbulent water flow, and mixed into the water within the filtering chamber 610. When the control valve assembly 700 is switched to the second operating state, the wastewater inlet 704 is opened, and the pollutant discharge port 6103 and the pollutant discharge pipe 240 are connected, allowing the wastewater with lint to be discharged from the pollutant discharge port 6103 and enter the pollutant discharge pipe 240 via the second valve chamber 712.

[0058] In detail, the circulation filtering pipe of the washing machine in this embodiment specifically includes: water tank drain pipe 260 connecting water tank 100 and the water inlet end of circulation pump 400; drain pipe 210 having one end connected to the water discharge end of circulation pump 400 and the other end connected to water inlet 701 of control valve assembly 700; circulation pipe 220 having one end connected to circulating water outlet 702 of control valve assembly 700 and the other end connected to water inlet 6101 of filtering device 600; and return water pipe 230 having one end connected to filtered water outlet 6102 of filtering device 600 and the other end communicating with water tank 100, for transporting filtered water into water tank 100.

[0059] In this embodiment, specifically, the water return pipe 230 is connected to the window packing 110 at the tank opening of the water tank 100 .

[0060] The polluted discharge port 6103 of the filtration device 600 is connected to the communicating pipe 280, which is connected to the wastewater inlet 704 of the control valve assembly 700. The water inlet end of the polluted discharge pipe 240 is connected to the wastewater outlet 705 of the control valve assembly 700. This forms a discharge path for wastewater within the filtration device 600.

[0061] Preferably, the return water pipe 230 is provided with a return water control valve 231 for controlling the opening and closing of the return water pipe 230. When the control valve assembly 700 is switched to the second operating state, the return water control valve 231 is closed to block the return water pipe 230, thereby reliably ensuring that the water in the filtering chamber 610 does not flow out from the filtered water outlet 6102. This is advantageous for sufficiently discharging lint remaining in the filtering device 600.

[0062] In another embodiment of the present invention, the washing machine further includes an external discharge pipe 250 for discharging water to the outside. In addition, the first valve chamber 711 further includes a drain outlet 703 communicating with the external discharge pipe 250.

[0063] In the first operating state, the switching mechanism 720 closes the drain outlet 703, and in the second operating state, the switching mechanism 720 opens the drain outlet 703.

[0064] Accordingly, the control method for the washing machine includes:

[0065] When the control valve assembly 700 is switched to the first operating state, the circulating water outlet 702 is opened, the drain outlet 703 is closed, and the circulating pump 400 is started. Then, water in the water tank 100 is introduced into the first valve chamber 711, discharged from the circulating water outlet 702, and enters the filtration device 600.

[0066] When control valve assembly 700 is switched to the second operating state, circulating water outlet 702 is closed, drain outlet 703 is opened, and circulation pump 400 is started. Then, water in water tank 100 is introduced into first valve chamber 711, discharged from drain outlet 703, and discharged from the washing machine via external discharge pipe 250.

[0067] Specifically, during the washing / rinsing process of the washing machine, control valve assembly 700 is switched to the first operating state, and return water control valve 231 is opened. Also, circulation pump 400 is started, and water is drawn out from water tank 100 and discharged from circulating water outlet 702 as it passes through control valve assembly 700. This water then enters filtration device 600 to remove lint, and then returns to water tank 100 via return water line 230.

[0068] After the washing / rinsing cycle is completed, control valve assembly 700 is switched to the second operating state, and return water control valve 231 is closed. Circulation pump 400 is started, and water is drawn out of water tank 100. As the water passes through control valve assembly 700, it is discharged from drain outlet 703 and then discharged from the washing machine via external discharge pipe 250. At the same time, dirty water inlet 704 of control valve assembly 700 is opened, and dirty water containing lint in filtration chamber 610 is discharged from polluted discharge port 6103. The dirty water then enters second valve chamber 712 of control valve assembly 700 from dirty water inlet 704, and is then discharged from dirty water outlet 705 and enters polluted discharge pipe 240.

[0069] In the above solution, filtering device 600 can automatically discharge lint and other foreign matter remaining inside during the circulating filtration process, eliminating the need for the user to manually clean filtering device 600. Furthermore, when control valve assembly 700 is in the second operating state, the water inlet 701 and drain outlet 703, and the wastewater inlet 704 and wastewater outlet 705 are simultaneously opened, allowing water to be drained from water tank 100 to the outside of the washing machine and wastewater to be discharged from filtering device 600 to the outside to be performed simultaneously. This improves the operating efficiency of the washing machine and the user experience.

[0070] In a specific solution of this embodiment, as shown in Figures 3 and 4, the switching mechanism 720 includes a flap 740 rotatably mounted inside the valve body 710 and having a first surface 741 and a second surface 742 facing away from each other, a drainage seal member 733 provided on the first surface 741 of the flap 740, located inside the first valve chamber 711, and used to block the drainage outlet 703, a pollution discharge seal member provided on the first surface 741 of the flap 740, located inside the second valve chamber 712, and used to block the sewage inlet 704, and a circulation seal member 732 provided on the second surface 742 of the flap 740, located inside the first valve chamber 711, and used to block the circulating water outlet 702.

[0071] The waste water outlet 703 and the waste water inlet 704 are provided on the same side of the valve body 710. In a first operating state, the drain seal member 733 and the contaminant discharge seal member respectively close the waste water outlet 703 and the waste water inlet 704. In a second operating state, the flap 740 rotates in a direction away from the waste water outlet 703 and the waste water inlet 704 until the circulation seal member 732 closes the circulating water outlet 702.

[0072] The switching mechanism 720 further includes a drive member for rotating the flap 740 within the valve body 710. Specifically, the drive member includes a drive motor 750 provided outside the valve body 710.

[0073] Since the drive motor 750 is installed outside the valve body 710, the risk of contact with water is avoided, making it safer. The control valve assembly 700 has a simple structure because it can simultaneously control the open / closed states of the circulating water outlet 702, the wastewater outlet 703, and the sewage inlet 704 by moving the flap 740 with a single drive motor 750. Furthermore, costs can be effectively reduced compared to the prior art solution of providing a separate control valve for each independent waterway.

[0074] In this embodiment, the first valve chamber 711 and the second valve chamber 712 of the control valve assembly 700 each have a certain extension length, and the extension directions of their respective lengths are parallel to each other. Specifically, the first valve chamber 711 and the second valve chamber 712 extend left and right and are arranged parallel to each other.

[0075] The drain outlet 703 is provided in the chamber wall at the right end surface in the direction of extension of the length of the first valve chamber 711, and the wastewater inlet 704 is provided in the chamber wall at the right end surface of the second valve chamber 712.

[0076] Preferably, water inlet 701 is provided on the chamber wall at the left end surface of first valve chamber 711, and faces parallel to and opposite to wastewater outlet 703. Furthermore, wastewater outlet 705 is provided on the chamber wall at the left end surface of second valve chamber 712, and faces parallel to and opposite to wastewater inlet 704. When control valve assembly 700 is in the second operating state, water flows from left to right in first valve chamber 711 and from right to left in second valve chamber 712. This reduces the resistance force on the water flow, allowing for smoother drainage of the washing machine and smoother discharge of pollutants from filtration device 600.

[0077] The circulating water outlet 702 and the waste water outlet 703 are oriented perpendicular to each other. Therefore, when the control valve assembly 700 is switched from the first operating state to the second operating state, the flap 740 rotates 90° around the rotation axis.

[0078] Preferably, the circulating water outlet 702 is provided on a side chamber wall in the direction of extension of the length of the first valve chamber 711. Furthermore, the side chamber wall on which the circulating water outlet 702 is located is adjacent to the side chamber wall of the second valve chamber 712.

[0079] 3, the first valve chamber 711 is provided above the second valve chamber 712, and the circulating water outlet 702 is provided on the front chamber wall of the first valve chamber 711. The front chamber wall of the first valve chamber 711 and the front chamber wall of the second valve chamber 712 are arranged adjacent to each other.

[0080] When the control valve assembly 700 is in the first operating state, the flap 740 is approximately parallel to the chamber walls on the right end surfaces of the first valve chamber 711 and the second valve chamber 712, causing the drain seal member 733 to close the drain outlet 703 and the contamination discharge seal member to close the wastewater inlet 704. When the control valve assembly 700 is switched to the second operating state, the drive motor 750 rotates the flap 740 forward 90°, causing the circulation seal member 732 to close the circulating water outlet 702. At this time, the drain seal member 733 separates from the drain outlet 703, opening the drain outlet 703. The contamination discharge seal member separates from the wastewater inlet 704, opening the wastewater inlet 704.

[0081] In this embodiment, the washing machine is provided with a control valve assembly 700, and a single drive motor 750 can control whether water in the water tank 100 is transported to the filtration device 600 or to the external discharge pipe 250, and can simultaneously control whether or not dirty water is discharged to the outside from the pollutant discharge port 6103 of the filtration device 600. The circulation filtration and drainage of the washing machine and the pollutant discharge operation of the filtration device 600 are both controlled by the same control valve assembly 700. This simplifies the waterway structure inside the washing machine, further saving space and reducing costs. [Example]

[0082] 5 and 6, this embodiment further limits the above-mentioned embodiment 1. The above-mentioned washing machine further includes a collection device 500. The collection device 500 is connected to the discharge end of the polluted discharge pipe 240 and is used to collect the polluted water discharged from the filtering device 600.

[0083] Specifically, the collecting device 500 is used to collect foreign matter 501 such as lint that is discharged together with the wastewater.

[0084] Fine lint may be present in the filtering particles 501. Therefore, if the wastewater containing the filtering particles 501 is directly combined with the drainage water flow of the washing machine and discharged together with the drainage water, the fine lint may enter the ecological cycle, causing harm to the ecological environment and human health.

[0085] The washing machine of this embodiment is provided with a recovery device 500. After the wastewater containing the filtering foreign matter 501 is discharged from the pollutant discharge port 6103, it does not enter the drain water flow and be discharged from the washing machine together with the drain water flow, but instead enters the recovery device 500 via the pollutant discharge pipe 240 and can be collected.

[0086] In a further embodiment of this embodiment, the collection device 500 includes a housing 510 having a collection chamber therein, and a filter assembly 520 disposed within the collection chamber and dividing the collection chamber into a first chamber 531 and a second chamber 532.

[0087] The contaminant outlet 6103 of the filtering device 600 communicates with the first chamber 531. The dirty water containing the filtration particles 501 enters the first chamber 531, passes through the filtering assembly 520, is filtered, and then enters the second chamber 532. The filtration particles 501 are collected in the first chamber 531.

[0088] In the above solution, a filter assembly 520 is provided in the recovery device 500 to filter the wastewater discharged from the filter device 600 and thereby separate the foreign particles 501 from the water. The filter assembly 520 divides the interior of the recovery device 500 into a first chamber 531 and a second chamber 532, and the foreign particles 501 in the wastewater are blocked by the filter assembly 520. As a result, the foreign particles 501 are collected on the upper surface of the filter assembly 520 in the first chamber 531, and the clean water obtained by filtration is collected in the second chamber 532. The user can directly collect and treat the separated foreign particles 501, which prevents the foreign particles 501 from mixing with the water and preventing effective treatment.

[0089] Specifically, the filter assembly 520 may be a frame installed horizontally at a certain height in the collection chamber, and a filter mesh laid on the frame. After the wastewater carrying the contaminants 501 enters the first chamber 531, the water can pass through the filter assembly 520 and enter the second chamber 532, but the contaminants 501 are blocked by the filter mesh and remain on the top surface of the filter assembly 520.

[0090] In this embodiment, the washing machine further includes a housing 10. The water tank 100 and the filtering device 600 are both provided in the housing 10. The collecting device 500 is provided in the housing 10 so as to be insertable / removable. A user can remove the collecting device 500 from the housing 10 for cleaning.

[0091] Specifically, the housing 510 of the recovery device 500 is mounted in the case 10 so as to be insertable / removable. The housing 510 has an opening at the top. When the user removes the housing 510 from the case 10, the user can clean the filtering foreign matter 501 adhering to the top surface of the filtering assembly 520 through the opening at the top of the housing 510. Preferably, the filtering assembly 520 is detachably connected to the housing 510. In this case, the user can disassemble the filtering assembly 520 from inside the housing 510, remove it, and clean it, making the operation even easier.

[0092] In a preferred version of this embodiment, second chamber 532 is provided with a water outlet for discharging filtered clean water. Providing a water outlet in second chamber 532 allows clean water that has entered second chamber 532 to be quickly discharged from recovery device 500. This prevents overflow in recovery device 500 when a large amount of wastewater flows in from filtering device 600. Otherwise, the capacity of second chamber 532 would need to be increased, which would require an increase in the volume of recovery device 500, which would occupy a large space inside the washing machine and be detrimental to reducing the overall volume of the washing machine.

[0093] Furthermore, since the water in second chamber 532 can be automatically discharged from the water outlet, when the user cleans collection device 500, he or she only needs to clean filtering foreign matter 501 on filter assembly 520, and does not need to manually discard the clean water in second chamber 532. Furthermore, if filter assembly 520 is removably attached within housing 510, the user can simply take out filter assembly 520 and clean it without having to completely remove housing 510 from casing 10 of the washing machine, making operation even easier.

[0094] In a preferred embodiment of this embodiment, the outlet of the second chamber 532 may be connected to the return water pipe 230 or may be directly connected to the water tank 100 through a pipe.

[0095] The wastewater that enters recovery device 500 is filtered by filter assembly 520 in recovery device 500, and filtration debris 501 is removed. Therefore, clean water that does not contain filtration debris 501 is collected in second chamber 532. If this clean water is sent to water tank 100, it is possible to reuse this clean water, thereby reducing the amount of water required for the washing machine to continue operating, and achieving the goal of saving water usage in the washing machine.

[0096] In another preferred embodiment of this embodiment, the water outlet of second chamber 532 may be directly or indirectly connected to the outside of the washing machine. For example, the water outlet of second chamber 532 may be connected to external discharge line 250 through a pipe, so that the water collected in second chamber 532 can be discharged from the washing machine via external discharge line 250.

[0097] What is collected in the second chamber 532 is clean water that does not contain the filtering foreign matter 501. Therefore, even if this is directly discharged, there is no problem of fine lint entering the ecosystem circulation.

[0098] In this embodiment, a collection device 500 is provided inside the washing machine. Wastewater containing filtration contaminants 501 discharged from the filtration device 600 passes through the connecting pipe 280, the control valve assembly 700, and the pollutant discharge pipe 240 in that order, and then passes through the collection device 500 to be collected rather than joining the drainage water flow of the washing machine and being directly discharged. This prevents fine lint particles in the filtration contaminants 501 from entering the ecological cycle along with the drainage water flow, which could have an adverse effect on the ecological environment or human health. The collection device 500 is provided with a filter assembly 520 that filters the collected wastewater to separate the filtration contaminants 501 from the water, making it easy to clean the filtration contaminants 501. [Example]

[0099] As shown in Figures 7 and 8, this embodiment further limits the filtration device 600 of Example 1 or Example 2. The outer periphery of the filtered water outlet 6102 of the filtration device 600 extends toward the outside of the filtration chamber 610 to form a sealed support part 611. One end of the filtration mechanism 620 is provided with a water discharge joint 621 inserted into the sealed support part 611. The water discharge joint 621 is rotatably and sealedly connected to the sealed support part 611. A first bearing 631 is provided to cover the water discharge joint 621. A first seal member 641 is provided on the side of the first bearing 631 facing the inside of the filtration chamber 610 to close the gap between the water discharge joint 621 and the sealed support part 611.

[0100] Specifically, the filtering mechanism 620 includes a filter mesh holder and a filter mesh 625. The filter mesh holder is located inside the filtering chamber 610 and includes a filter mesh support part 623 whose surface is covered with the filter mesh 625, a water discharge joint 621 provided at the left end of the filter mesh support part 623 and rotatably inserted into the sealing support part 611, and a rotating support part 622 provided at the right end of the filter mesh support part 623 and rotatably connected to the filtering chamber 610.

[0101] In the above solution, a first bearing 631 supporting the water discharge joint 621 is provided between the water discharge joint 621 and the sealing support 611. This allows the water discharge joint 621 to rotate more smoothly within the sealing support 611 and stabilizes the structure, ensuring stable rotation of the filtering mechanism 620 within the filtering chamber 610. In addition, a first seal member 641 is provided to the right of the first bearing 631, preventing flushing water within the filtering chamber 610 from entering the gap between the water discharge joint 621 and the sealing support 611. This prevents contact between the first bearing 631 and water, preventing loss of function of the first bearing 631 and ensuring the function and effect of the first bearing 631. In addition, the first seal member 641 also prevents unfiltered flushing water from flowing out from the filtered water outlet 6102 via the sealing support 611, which would affect the lint removal efficiency of the filtering device 600.

[0102] In a specific solution of this embodiment, the first sealing member 641 is installed over the water discharge joint 621. As a result, the inner wall of the first sealing member 641 and the outer wall of the water discharge joint 621 are hermetically connected, and the outer wall of the first sealing member 641 and the inner wall of the sealing support part 611 are rotatably hermetically connected.

[0103] In a further solution of this embodiment, the filtering device 600 further includes a second sealing member 642. The second sealing member 642 is disposed on the opposite side of the first bearing 631 from the inside of the filtering chamber 610, and closes the gap between the water discharge joint 621 and the sealing support part 611.

[0104] Specifically, the second sealing member 642 is installed to cover the water discharge joint 621. As a result, the inner wall of the second sealing member 642 and the outer wall of the water discharge joint 621 are hermetically connected, and the outer wall of the second sealing member 642 and the inner wall of the sealing support part 611 are rotatably hermetically connected.

[0105] In the above solution, water flowing out from the water discharge joint 621 is blocked by the second seal member 642 and does not come into contact with the first bearing 631. The first bearing 631 is provided between the first seal member 641 and the second seal member 642, which maximizes the assurance that no water is present in the installation environment of the first bearing 631. This prevents the first bearing 631 from coming into contact with water and becoming rusty, which could affect the smooth rotation of the filtering mechanism 620.

[0106] In a further solution of this embodiment, the inner wall of the sealing support part 611 has a stepped structure, and from one end of the sealing support part 611 toward the outside of the filtration chamber 610, a first position control surface 601, a second position control surface 602, and a third position control surface 603 are formed, in order, having an annular structure and gradually decreasing inner diameter.

[0107] The surface of the first sealing member 641 facing outward from the filtration chamber 610 abuts against the first position control surface 601, the surface of the first bearing 631 facing outward from the filtration chamber 610 abuts against the second position control surface 602, and the surface of the second sealing member 642 facing outward from the filtration chamber 610 abuts against the third position control surface 603.

[0108] In the above solution, a plurality of vertically oriented annular position restriction surfaces are formed on the inner wall of the stepped sealing support part 611, and are brought into contact with the left-side surfaces of the first sealing member 641, first bearing 631, and second sealing member 642, respectively, thereby restricting their movement in the axial direction of the water discharge joint 621. This prevents the fitting structure between the water discharge joint 621 and the sealing support part 611 from becoming loose when the filtering mechanism 620 is rotating.

[0109] In a preferred design of this embodiment, the outer diameter of one end of the water discharge joint 621 that is close to the outside of the filtering chamber 610 is smaller than the outer diameter of the other end. As a result, a fourth position restriction surface 604 having an annular structure and perpendicular to the axis of the water discharge joint 621 is formed on the outer wall of the water discharge joint 621. The surface of the first bearing 631 that faces the inside of the filtering chamber 610 abuts against the fourth position restriction surface 604.

[0110] By making the outer diameter of the left end of water discharge joint 621 smaller than that of the right end, a fourth position restriction surface 604 facing left is formed where the outer diameter suddenly changes, and is brought into contact with the surface on the right side of first bearing 631. In this way, both sides of first bearing 631 have a position restriction structure, further stabilizing the structure.

[0111] In this embodiment, one end of the sealing support part 611 remote from the filtering chamber 610, i.e., the left end of the sealing support part 611, is connected to the filtering chamber flange 650. A through hole 653 communicating with the water discharge joint 621 is provided in the center of the filtering chamber flange 650. The outer periphery of the through hole 653 extends to the opposite side of the sealing support part 611 to form a connection part 651.

[0112] Preferably, the surface of the filtration chamber flange 650 facing the sealing support portion 611 is provided with a protruding insert portion 652. The insert portion 652 is inserted into the opening at the left end of the sealing support portion 611.

[0113] In the above solution, the left end of the sealing support part 611 is connected to the filtering chamber flange 650. The filtering chamber flange 650 is formed with a connecting part 651. The outer diameter of the connecting part 651 is smaller than that of the sealing support part 611. The inner diameter of the connecting part 651 is preferably equal to that of the water outlet joint 621. When the filtering device 600 is installed in the washing machine, it is connected to the water return pipe via the connecting part 651 of the filtering chamber flange 650. This is easier to install than a method in which the water return pipe is directly connected to the left end of the sealing support part 611.

[0114] The right side of filtration chamber flange 650 is provided with an insertion portion 652 that is inserted into the opening at the left end of sealing support portion 611. This is convenient for positioning when assembling filtration chamber flange 650 and sealing support portion 611. Several fixing portions are provided on the outer peripheries of filtration chamber flange 650 and sealing support portion 611, respectively, and filtration chamber flange 650 and sealing support portion 611 are fixed to each other by inserting screws into these fixing portions.

[0115] In a further solution of this embodiment, the pivot support 622 at the right end of the filtering mechanism 620 extends along the pivot axis to the outside of the filtering chamber 610. The filtering chamber 610 is provided with an attachment opening 6104 through which the pivot support 622 is inserted. The pivot support 622 is rotatably connected to the attachment opening 6104 in a sealed manner.

[0116] In this embodiment, the filtration mechanism 620 rotates when driven by a drive mechanism, but to prevent the drive mechanism from coming into contact with the cleaning water, the drive mechanism is provided outside the filtration chamber 610. Therefore, the rotation support part 622 extends from the right end of the filtration chamber 610. In addition, a motor mounting part 624 for connecting a drive mechanism such as a motor is provided at the right end of the rotation support part 622.

[0117] Furthermore, the outer periphery of the mounting port 6104 extends to the outside of the filtration chamber 610 along the axis of the rotation support part 622, thereby forming a sleeve part 612. A third seal member 643 is provided to cover the rotation support part 622. The inner wall of the third seal member 643 and the outer wall of the rotation support part 622 are hermetically connected, and the outer wall of the third seal member 643 and the inner wall of the sleeve part 612 are rotatably and hermetically connected.

[0118] A second bearing 632 is further provided between the sleeve portion 612 and the rotary support portion 622. The second bearing 632 is covered by the rotary support portion 622 and is located on the side of the third seal member 643 that faces the outside of the filtration chamber 610.

[0119] In the above solution, the third seal member 643 is provided to prevent water in the filtering chamber 610 from leaking out through the mounting opening 6104. The second bearing 632 provides a support for the pivot support member 622, ensuring smoother relative rotation between the pivot support member 622 and the sleeve member 612. The second bearing 632 is provided on the right side of the third seal member 643, so it does not come into contact with the water in the filtering chamber 610, preventing loss of function.

[0120] In a preferred design of this embodiment, the inner diameter of one end of sleeve portion 612, which is adjacent to the outside of filtration chamber 610, is smaller than the inner diameter of the other end. As a result, a fifth position restriction surface 605 having an annular structure and perpendicular to the axis of rotation support portion 622 is formed on the inner wall of sleeve portion 612. The surface of third seal member 643 facing the outside of filtration chamber 610 abuts against fifth position restriction surface 605.

[0121] The outer diameter of one end of rotation support part 622 that is close to the outside of filtration chamber 610 is smaller than the outer diameter of the other end. As a result, sixth position restriction surface 606 having an annular structure and perpendicular to the axis of rotation support part 622 is formed on the outer wall of rotation support part 622. The surface of second bearing 632 that faces the inside of filtration chamber 610 abuts against sixth position restriction surface 606.

[0122] In the above solution, the inner diameter of the right end of sleeve portion 612 is smaller than the inner diameter of the left end, and a fifth position restriction surface 605 facing leftward is formed at the point where the inner diameter suddenly changes and abuts against the right surface of third seal member 643. In addition, the outer diameter of the right end of rotation support portion 622 is smaller than the outer diameter of the left end, and a sixth position restriction surface 606 facing rightward is formed at the point where the outer diameter suddenly changes and abuts against the left surface of second bearing 632. With the above structure, movement of third seal member 643 and second bearing 632 in the axial direction of rotation support portion 622 is restricted, resulting in a stable structure.

[0123] In this embodiment, the first seal member 641, the second seal member 642, and the third seal member 643 are all oil seals. The right wall and the peripheral side wall of the filtration chamber 610 are provided as separate bodies. First, the filtration mechanism 620, the first seal member 641 at the left end, the second seal member 642, and the first bearing 631 are all installed inside the filtration chamber 610, and then the third seal member 643 and the second bearing 632 are installed at the right end. Finally, the right wall of the filtration chamber 610 is engaged with the peripheral side wall.

[0124] In this embodiment, the cross-sectional area of ​​the central region of the filter mesh support part 623 is constant, but the left and right ends have cone-shaped structures. In this way, by providing a part of the surface of the filter mesh 625 at an incline, it is advantageous for adhering lint to fall off.

[0125] In this embodiment, the water inlet 6101 and the contaminant outlet 6103 of the filtration chamber 610 are oriented perpendicular to the axial direction of the filtration mechanism 620 .

[0126] Preferably, the filtering chamber 610 has a cylindrical structure, and the water inlet 6101 is located near the right end of the filtering chamber 610, and the pollutant outlet 6103 is located near the left end of the filtering chamber 610. The positions of the water inlet 6101 and the pollutant outlet 6103 are symmetrical in the circumferential direction of the filtering chamber 610.

[0127] In the above solution, the position of the water inlet 6101 is as far away as possible from the water outlet joint 621 so as to fully utilize the area of ​​the filter mesh 625. Moreover, the water inlet 6101 and the pollutant outlet 6103 are arranged above and below each other and are offset in the axial direction of the filtering chamber 610. This is advantageous for fully discharging the polluted water in the filtering chamber 610 after cleaning the filtering device 600.

[0128] In a further solution of this embodiment, a reinforcing rib 613 is provided on the outer wall of the sealing support 611, extending in the radial direction of the sealing support 611. The reinforcing rib 613 is connected to the surface of the filtering chamber 610 where the filtered water outlet 6102 is located.

[0129] Since the sealing support part 611 extends a certain length from the left end face of the filtration chamber 610, a reinforcing rib 613 is provided to support the peripheral side wall from the outside, thereby ensuring the strength of the sealing support part 611.

[0130] In the filtering device 600 of this embodiment, a first bearing 631 and a second bearing 632 are provided at both ends of the filtering mechanism 620 to support it, thereby ensuring that the filtering mechanism 620 rotates smoothly and stably within the filtering chamber 610. In addition, the provision of a first sealing member 641, a second sealing member 642, and a third sealing member 643 prevents the first bearing 631 and the second bearing 632 from coming into contact with water, thereby avoiding loss of their functionality.

[0131] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above through a preferred embodiment, it is not intended to limit the present invention. Within the scope of the technical solution of the present invention, slight changes or modifications that can be made by those skilled in the art using the technical content presented above are equivalently modified equivalent embodiments, and none of them deviate from the content of the technical solution of the present invention. Furthermore, any simple modifications, equivalent variations, and modifications made to the above embodiments based on the technical essence of the present invention all fall within the scope of the solution of the present invention. [Explanation of symbols]

[0132] 10. Cabinet 100 Water Tank 110 Window Gasket 210 Drain pipeline 220 Circulation pipeline 230 Water ring pipe 231 Return water control valve 240 Pollution Discharge Pipes 250 External discharge pipe 260 Water tank drain pipe 280 Communication pipeline 400 Circulation Pump 500 Recovery Device 501 Filtered foreign matter 510 Housing 520 Filtration Assembly 531 Chamber 1 532 Second Chamber 600 Filtration equipment 601 First position control surface 602 Second position control surface 603 Third position control surface 604 4th position control surface 605 5th position control surface 606 6th Position Control Surface 610 Filtration Chamber 6101 Water inlet 6102 Filtered water outlet 6103 Pollution outlet 6104 Mounting port 611 Sealing support part 612 Sleeve part 613 Reinforcing rib 620 Filtration mechanism 621 Water outlet joint 622 Rotation support part 623 Filter mesh support part 624 Motor mounting part 625 Filter Mesh 631 First bearing 632 Second bearing 641 First sealing member 642 Second seal member 643 Third seal member 650 Filtration Chamber Flange 651 Connection 652 Insertion section 653 Through hole 660 Drive Mechanism 700 Control valve assembly 701 Water inlet 702 Circulating water outlet 703 Drainage outlet 704 Sewage inlet 705 Sewage outlet 710 Valve body 711 1st valve chamber 712 2nd valve chamber 720 Switching Mechanism 732 Circulating seal material 733 Drainage seal material 740 Flap 741 First Side 742 Second Side 750 drive motor

Claims

1. A washing machine including: a water tank; a circulation filtration pipe having a water inlet end and a water outlet end each communicating with the water tank; a filtering device provided in the circulation filtration pipe and having a water inlet, a filtered water outlet, and a polluted water discharge outlet; and a polluted water discharge pipe for receiving polluted water discharged from the polluted water discharge outlet, The system further includes a control valve assembly provided between the water inlet end of the circulation filtration pipe and the filtration device, the control valve assembly having a first valve chamber and a second valve chamber independent from each other, the first valve chamber communicating the water tank with the water inlet of the filtration device, and the second valve chamber communicating the polluted discharge pipe with the polluted discharge outlet of the filtration device; The control valve assembly has a first operating state in which the water tank and the water inlet are connected and the pollutant discharge port and the pollutant discharge pipe are blocked, and a second operating state in which the water tank and the water inlet are connected and the pollutant discharge port and the pollutant discharge pipe are connected.

2. The control valve assembly includes a valve body, and a first valve chamber and a second valve chamber are formed inside the valve body, the first valve chamber and the second valve chamber being independent of each other. The first valve chamber is provided with a water inlet communicating with a water tank and a circulating water outlet communicating with the water inlet, and the second valve chamber is provided with a sewage inlet communicating with the polluted discharge port and a sewage outlet communicating with the polluted discharge pipeline, A switching mechanism is provided within the valve body, and in a first operating state, the switching mechanism opens the circulating water outlet and closes the wastewater inlet and / or the wastewater outlet, and in a second operating state, the switching mechanism closes the circulating water outlet and opens the wastewater inlet and the wastewater outlet. The washing machine according to claim 1.

3. The washing machine further includes an external discharge pipe for draining water to the outside, and the first valve chamber is further provided with a drain outlet communicating with the external discharge pipe, In a first operating state, the switching mechanism closes the drain outlet, and in a second operating state, the switching mechanism opens the drain outlet. The washing machine according to claim 2.

4. The switching mechanism includes a flap rotatably attached to the inside of the valve body and having a first surface and a second surface facing away from each other; a drain seal member provided on a first surface of the flap and positioned inside the first valve chamber to close the drain outlet; a pollution discharge seal member provided on the first surface of the flap and located inside the second valve chamber, the pollution discharge seal member being used to close the pollution inlet; a circulation seal member provided on the second surface of the flap and positioned inside the first valve chamber to close the circulating water outlet, The drain outlet and the wastewater inlet are provided on the same side of the valve body, and in a first operating state, the drain seal member and the contamination discharge seal member close the drain outlet and the wastewater inlet, respectively, and in a second operating state, the flap rotates in a direction away from the drain outlet and the wastewater inlet until the circulation seal member closes the circulating water outlet. The washing machine according to claim 3.

5. The first valve chamber and the second valve chamber each have a certain extension length, and the extension directions of the respective lengths are parallel to each other; The drain outlet is provided on a chamber wall at an end surface in an extension direction of the length of the first valve chamber, and the sewage inlet is provided on a chamber wall at an end surface in the same direction of the second valve chamber. The washing machine according to claim 4.

6. The direction of the circulating water outlet and the direction of the waste water outlet are perpendicular to each other, and when the control valve assembly is switched from the first operating state to the second operating state, the flap rotates 90° around the rotation axis. The washing machine according to claim 5.

7. The switching mechanism further includes a drive member for rotating the flap within the valve body. The washing machine according to any one of claims 4 to 6.

8. a circulation pump is provided between the water inlet end of the circulation filtration line and the control valve assembly. The washing machine according to any one of claims 1 to 7.

9. A method for controlling a washing machine according to any one of claims 1 to 8, When the control valve assembly is switched to the first operating state, the water in the water tank passes through the first valve chamber, enters the filter device and is filtered, and the filtered water returns to the water tank; When the control valve assembly is switched to the second operating state, the wastewater in the filter device is discharged into the polluted discharge line via the second valve chamber.

10. The washing machine further includes an external discharge pipe for draining water to the outside, and the first valve chamber is provided with a circulating water outlet communicating with the water inlet and a drain outlet communicating with the external discharge pipe, When the control valve assembly is switched to the first operating state, the circulating water outlet is opened and the drain outlet is closed, so that water in the water tank is introduced into the first valve chamber, discharged from the circulating water outlet, and enters the filtration device; 10. The method for controlling a washing machine according to claim 9, wherein when the control valve assembly is switched to the second operating state, the circulating water outlet is closed, the drain outlet is opened, and water in the water tank is introduced into the first valve chamber, discharged through the drain outlet, and then discharged from the washing machine via the external discharge pipe.

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