A washing machine

Abstract

The present application belongs to the technical field of washing machines, and discloses a washing machine, which comprises a water containing cylinder, a filtering device in communication with the water containing cylinder, a suction device, a recovery device and an isolation mechanism, wherein the filtering device receives water in the water containing cylinder to filter the water, and has a sewage outlet for discharging sewage outward; the suction device performs a suction action to drive sewage in the filtering device to be discharged through the sewage outlet under the action of pressure difference; the recovery device is used for collecting the sewage discharged by the filtering device; and the isolation mechanism is arranged between the sewage outlet and the suction device, and disconnects the communication between the suction device and the sewage outlet with the discharge of the sewage. In the present application, the isolation mechanism is arranged between the suction device and the sewage outlet of the filtering device, so that the communication between the suction device and the sewage outlet can be automatically disconnected when the discharged sewage reaches a certain amount, the sewage is prevented from being further discharged and sucked into the suction device, and the suction device is protected.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of washing machines, and particularly relates to a washing machine. BACKGROUND

[0002] In the process of washing clothes by a washing machine, due to the friction between clothes and clothes and between clothes and the washing machine itself, lint will fall off the clothes and mix into the washing water. If the lint in the washing water cannot be removed, it will most likely adhere to the surface of the clothes after the washing is completed, affecting the washing effect of the clothes. Therefore, a filter for filtering the lint is installed on the existing washing machine, and the washing water is circulated through the filter during the washing process to remove the lint from the washing water.

[0003] The filter of the existing washing machine is generally arranged inside the inner tub or the drain pump and used for filtering the lint and sundries in the washing water. However, after the washing machine is used for a long time, the filter will be filled with filtering sundries such as lint, affecting the filtering effect of the filter and causing the blockage of the drain valve / drain pump, and bacteria are easily bred, so the filter needs to be cleaned in time, otherwise the washing water will be polluted and the clothes will be secondarily polluted, affecting the health of the user. However, most washing machines need the user to take down the filter for manual cleaning, which is inconvenient to operate.

[0004] In view of the above problems, the filter device with the self-cleaning function is currently proposed, which can autonomously discharge the attached filtering sundries. Most washing machines applying the above filter device directly discharge the sewage carrying the filtering sundries into the drain flow of the washing machine after the self-cleaning of the filter device is completed, which brings the following problems.

[0005] On the one hand, due to the relatively compact internal space of the washing machine, the sewage discharge path of the filter device is relatively long, and there may be a certain height difference, so that the sewage in the filter device is difficult to be fully discharged without the aid of driving force, resulting in that the self-cleaning of the filter device is not thorough. After the washing machine is used for a long time, the hygiene problem caused by the accumulation of the filtering sundries in the filter device cannot be avoided.

[0006] In the washing machine of the prior art, the water pump is generally used to provide power for the water flow transmission, but if the water pump is used to transmit the sewage discharged from the filter device, after a long time, the lint and other sundries in the sewage may be left in the water pump, causing the blockage of the pump body of the water pump, and further causing the failure of the washing machine. How to drive the discharge of the sewage by the driving device which does not directly contact with the sewage becomes a problem to be solved urgently.

[0007] On the other hand, in recent years, the concept of microplastics has been proposed and gradually received increasing attention in the environmental protection field. Microplastics generally refer to plastic fragments and particles with a diameter of less than 5 millimeters. When mixed into the water environment in nature, microplastics can easily adsorb organic pollutants in water to form organic pollution spheres due to their high specific surface area. Microplastics in water can be easily eaten by low-end food chain organisms such as mussels and plankton, and since microplastics cannot be digested, when these low-end food chain organisms are preyed upon by upper-level organisms, microplastics will continue to accumulate in the upper-level organisms. As the top organisms in the food chain, the food sources of humans include the above-mentioned organisms with in-vivo accumulated microplastics, which may cause the accumulation of microplastics in the human body and may affect human health.

[0008] Research has found that an important source of microplastics is wastewater discharged by household washing machines. This is because washing machines wash clothes and wash off the fibers of the clothes. With the popularity of chemical fiber fabrics, the fibers that fall off are discharged with the washing machine drainage flow and become microplastics mixed into the natural water environment. At the same time, microplastics can also come from industrial products made of plastic materials, and the outer drum, drain pipe and other structures in the washing machine are generally made of plastic and will inevitably produce plastic fragments due to aging and other reasons after long-term use. Therefore, how to reduce the content of microplastics in the drainage of the washing machine has become a problem to be solved in the environmental protection field. The washing machine with a self-cleaning function of the filter device in the prior art has the problem of high content of microplastics in the drainage of the washing machine because the filter impurities containing microplastics directly flow into the drainage flow of the washing machine and are discharged.

[0009] In view of this, the present application is proposed. SUMMARY

[0010] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a washing machine with a filter device. The suction device is provided to perform a suction action to drive the sewage in the filter device to be discharged and collected in the recovery device, thereby avoiding the direct discharge of filter impurities in the sewage. The isolation mechanism is arranged between the suction device and the sewage discharge port of the filter device, which can automatically disconnect the communication between the suction device and the sewage discharge port when the discharged sewage reaches a certain amount, thereby preventing the sewage from being sucked into the suction device.

[0011] To solve the above technical problems, the basic idea of the technical solution of the present application is:

[0012] A washing machine comprises:

[0013] A water containing drum;

[0014] A filter device in communication with the water containing drum, receiving water in the water containing drum for filtration, having a sewage discharge port for discharging sewage outwardly;

[0015] Further comprising:

[0016] a suction device, which performs a suction action and drives the sewage in the filter device to be discharged through the sewage outlet under the action of pressure difference;

[0017] a recovery device, which is used for collecting the sewage discharged from the filter device;

[0018] an isolation mechanism, which is arranged between the sewage outlet and the suction device and disconnects the communication between the suction device and the sewage outlet during the discharge of the sewage.

[0019] Further, the isolation mechanism comprises a floating member, and a vent hole is arranged on a communication path between the suction device and the sewage outlet; during the discharge of the sewage, the floating member rises to the vent hole along with the water surface and blocks the vent hole.

[0020] Preferably, the floating member is a floating ball, and the diameter of the floating ball is greater than the diameter of the vent hole.

[0021] Further, the filter device is communicated with a sewage temporary storage device having an internal cavity, and the sewage temporary storage device is communicated with the recovery device; the suction device is communicated with the internal cavity of the sewage temporary storage device and sucks the air in the internal cavity of the sewage temporary storage device.

[0022] The floating member is arranged in the internal cavity of the sewage temporary storage device, and the vent hole is arranged on the sewage temporary storage device; and / or the floating member is arranged between the sewage temporary storage device and the suction device.

[0023] Further, a buffer portion is arranged between the suction device and the sewage temporary storage device, and the buffer portion has a buffer cavity which is communicated with the internal cavity of the sewage temporary storage device and the suction device respectively.

[0024] The floating member is arranged in the internal cavity of the sewage temporary storage device, and the vent hole is arranged on the sewage temporary storage device; and / or the floating member is arranged in the buffer portion, and the vent hole is arranged on the buffer portion.

[0025] Further, the isolation mechanism further comprises a guide portion extending from the bottom of the sewage temporary storage device to the vent hole, and the guide portion has a hollow channel, and the floating member is arranged in the hollow channel.

[0026] Preferably, the guide portion is arranged in a vertical manner.

[0027] Further, a through hole is arranged on the side wall of the guide portion and used for communicating the hollow channel with the space outside the guide portion.

[0028] Further, the floating member is a floating ball, and the guide portion is a circular tube structure, and the inner diameter of the guide portion is greater than the outer diameter of the floating ball.

[0029] Further, the sewage temporary storage device is connected with an air passage, and the air passage is communicated with the suction device; the floating member is a floating ball arranged in the sewage temporary storage device, and the diameter of the floating ball is larger than the diameter of the air passage.

[0030] Further, the floating member is a floating ball, and an air passage is arranged between the sewage temporary storage device and the suction device; the air passage has a reduced-diameter section with a diameter gradually decreasing from bottom to top, and the floating ball is arranged in the reduced-diameter section; the diameter of the top end of the reduced-diameter section is smaller than the diameter of the floating ball, and the floating ball is blocked when the water surface rises to the top end of the reduced-diameter section.

[0031] Further, the sewage temporary storage device is provided with a gas permeable hole, and the gas permeable hole is unidirectionally communicated from the outside to the inside of the sewage temporary storage device.

[0032] After the above technical scheme is adopted, the present application has the following beneficial effects compared with the prior art.

[0033] In the present application, the recovery device arranged in the washing machine can collect the sewage discharged from the filtering device, prevent the filter impurities such as lint carried by the sewage from being directly discharged from the washing machine, and avoid the microplastics in the filter impurities from entering the ecological cycle with the water flow, thereby affecting the ecological environment and human health. The suction device performs a suction action, and a pressure difference is generated inside and outside the sewage discharge port, thereby providing a driving force for the discharge of the sewage in the filtering device, and avoiding the pump blockage problem that may exist in the water pump delivery. The isolation mechanism is used to disconnect the communication between the sewage discharge port and the suction device when the sewage discharge reaches a certain amount, thereby protecting the suction device.

[0034] In the present application, the floating member is arranged in the sewage temporary storage device and / or the buffer part, the floating member floats on the water surface and rises with the rising water surface, and when the water surface rises to a certain height, the floating member can block the air passage, thereby preventing the sewage from overflowing from the air passage, and effectively avoiding the suction of the sewage by the suction device. The guide part guides the movement of the floating member, and ensures that the floating member can accurately move to the air passage when the water surface rises.

[0035] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0036] The accompanying drawings are part of the present application and serve to provide a further understanding of the present application, and the illustrative embodiments of the present application and the description thereof serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the accompanying drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0037] Figure 1 is a structural schematic diagram of a washing machine in an embodiment of the present application;

[0038] Figure 2 is a structural schematic diagram of a washing machine in an embodiment of the present application;

[0039] Figure 3 is a structural schematic diagram of a communication structure between a filtering device and a recycling device in an embodiment of the present application (no water in a sewage temporary storage device);

[0040] Figure 4 is an enlarged schematic diagram of A in the present application; Figure 3

[0041] Figure 5 is a structural schematic diagram of a communication structure between a filtering device and a recycling device in an embodiment of the present application (full water in a sewage temporary storage device);

[0042] Figure 6 is an enlarged schematic diagram of B in the present application; Figure 5

[0043] Figure 7 is a structural schematic diagram of a communication structure between a filtering device and a recycling device in an embodiment of the present application;

[0044] Figure 8 is a partial enlarged view of a sewage inlet of a recycling device in an embodiment of the present application (normal state);

[0045] Figure 9 is a partial enlarged view of a sewage inlet of a recycling device in an embodiment of the present application (blocking state when a gas pump is opened);

[0046] Figure 10 is a partial enlarged view of a sewage inlet of a recycling device in an embodiment of the present application (opening state after the gas pump is closed);

[0047] Figure 11 is a structural schematic diagram of a blocking member in an embodiment of the present application.

[0048] ​​In the figure: 10, box; 100, water tank; 110, window pad; 210, drainage pipeline; 220, circulating pipeline; 230, backwater pipeline; 240, sewage pipeline; 241, sewage control valve; 250, external discharge pipeline; 260, water tank drainage pipe; 270, switching device; 300, water inlet box; 400, circulating pump; 500, recovery device; 510, shell; 520, filter assembly; 531, first chamber; 532, second chamber; 540, blocking piece; 541, base body; 542, opening part; 550, sewage inlet; 551, tubular part; 552, connecting part; 600, filter device; 610, filter cavity; 6101, water inlet; 6102, filtered water outlet; 6103, sewage outlet; 620, filtering mechanism; 621, water outlet joint; 660, driving mechanism; 680, cleaning particles; 690, baffle; 810, air pump; 811, suction pipeline; 820, sewage temporary storage device; 821, air hole; 822, floating ball; 823, guide part; 830, buffer part; 831, air vent pipeline; 832, air vent hole.

[0049] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way. Rather, the drawings and the written description are intended to illustrate the concepts of the present application to a person skilled in the art. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0051] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0052] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] Embodiment one

[0054] As Figures 1 to 6 shown, the washing machine described in the embodiment comprises:

[0055] a water tub 100;

[0056] a filtering device 600, which is in communication with the water tub 100, receives water in the water tub 100 for filtering, and has a sewage outlet 6103 for discharging sewage to the outside;

[0057] a recycling device 500 for collecting the sewage discharged by the filtering device 600.

[0058] In the embodiment, the washing machine is provided with a circulating filtering pipeline having two ends in communication with the water tub 100, and the filtering device 600 is arranged on the circulating filtering pipeline. The circulating filtering pipeline is further provided with a circulating pump 400, which drives the water in the water tub 100 to continuously circulate through the circulating filtering pipeline, so that the lint and other filtering impurities in the water can be removed when passing through the filtering device 600, thereby reducing the content of lint in the water and improving the washing effect of the clothes.

[0059] The filtering device 600 is provided with the sewage outlet 6103, and the filtering impurities remaining in the filtering device 600 after filtering can be discharged from the sewage outlet 6103 along with the water flow, without the need for the user to take out the filtering device 600 for manual cleaning, and the use is more convenient. The recycling device 500 is in communication with the sewage outlet 6103 of the filtering device 600, and the sewage carrying the filtering impurities discharged from the sewage outlet 6103 can enter the recycling device 500 for collection, and will not be discharged from the washing machine along with the water flow. Through the above method, the microplastics in the filtering impurities are prevented from being discharged along with the water flow and entering the ecological cycle, thereby causing harm to the ecological environment and human health.

[0060] Specifically, the filtering device 600 of the embodiment comprises:

[0061] a filtering cavity 610, which is provided with a water inlet 6101, a filtered water outlet 6102 and a sewage outlet 6103, and the water inlet 6101 and the filtered water outlet 6102 are connected to the circulating filtering pipeline;

[0062] a filtering mechanism 620, which is rotatably arranged in the filtering cavity 610;

[0063] a driving mechanism 660, which drives the filtering mechanism 620 to rotate in the filtering cavity 610.

[0064] The filtering mechanism 620 comprises a filtering screen support and a filtering screen covering the surface of the filtering screen support, which separates the filtering cavity 610 into an outer cavity and an inner cavity. The water in the water tank 100 enters the outer cavity of the filtering cavity 610 through the water inlet 6101, and the filtering impurities in the water are blocked by the filtering screen and adhere to the outer surface of the filtering mechanism 620. The clean water without filtering impurities enters the inner cavity and flows out through the water outlet joint 621 in communication with the inner cavity, and finally flows out of the filtering cavity 610 through the filtered water outlet 6102. By designing the aperture of the filtering screen, the filtering mechanism 620 can not only filter large-size wire scraps in the water, but also filter micro-plastics in the water, thereby significantly reducing the content of micro-plastics in the washing machine drain water.

[0065] When the filtering device 600 needs to be cleaned, the filtering mechanism 620 is driven to rotate in the filtering cavity 610 by the driving mechanism 660, such as a motor, to agitate the residual water in the filtering cavity 610, so that the filtering impurities adhering to the surface of the filtering mechanism 620 are stripped from the filtering mechanism 620 under the action of centrifugal force and turbulent water flow and are mixed into the water in the filtering cavity 610. Finally, they can be discharged from the drain 6103 with the water flow and collected by the recycling device 500.

[0066] In this embodiment, the self-cleaning operation of starting the driving mechanism 660 to rotate the filtering mechanism 620 and / or the drain operation of discharging sewage from the filtering device 600 through the drain 6103 is performed at least once during the operation of the washing machine for one complete washing program. When the drain operation is performed, the filtering mechanism 620 can remain in a stationary state or be driven to rotate by the driving mechanism 660.

[0067] Further, cleaning particles 680 are arranged in the filtering cavity 610 of the filtering device 600 for rubbing and colliding with the inner wall of the filtering cavity 610 and the outer wall of the filtering mechanism 620. During the circulation filtering process, the cleaning particles 680 continuously rub the inner wall of the filtering cavity 610 and the outer wall of the filtering mechanism 620 with the flowing water flow, so that the adhering filtering impurities are stripped off, thereby preventing the deposition of filtering impurities and avoiding the covering of the filtering mechanism 620 by filtering impurities, which affects the filtering efficiency. When the filtering mechanism 620 rotates for self-cleaning, the cleaning particles 680 move in the filtering cavity 610 under the action of the turbulent water flow and rub the inner wall of the filtering cavity 610 and the outer wall of the filtering mechanism 620, thereby improving the stripping efficiency of the filtering impurities and making the self-cleaning effect of the filtering device 600 better.

[0068] The filter cavity 610 is further provided with a baffle 690, which separates the filter cavity 610 into a first space on the left and a second space on the right, and the cleaning particles 680 and the main body of the filter mechanism 620 are located in the first space. The water inlet 6101 is in communication with the first space, and the filtered water outlet 6102 and the sewage outlet 6103 are in communication with the second space. The baffle 690 is provided with a water passing hole in communication with the first space and the second space, and the sewage in the filter cavity 610 can be discharged from the sewage outlet 6103 through the baffle 690, and the cleaning particles 680 cannot pass through the water passing hole and are thus blocked by the baffle 690 on the left side, avoiding the situation that the cleaning particles 680 are discharged with the sewage through the sewage outlet 6103 or are accumulated at the sewage outlet 6103 to cause blockage.

[0069] The circulating filter pipeline of the washing machine in the embodiment specifically includes:

[0070] The water tub drain pipe 260 connects the water tub 100 and the water inlet end of the circulating pump 400.

[0071] The drain pipeline 210 is connected at one end to the water outlet end of the circulating pump 400 and at the other end to the switching device 270.

[0072] The circulating pipeline 220 is connected at one end to the switching device 270 and at the other end to the water inlet 6101 of the filter device 600.

[0073] The backwater pipeline 230 is connected at one end to the filtered water outlet 6102 of the filter device 600 and at the other end to the water tub 100, and conveys the filtered water into the water tub 100.

[0074] The switching device 270 is further connected to the external drain pipeline 250 for draining water outside the washing machine, and the switching device 270 can control the circulating pipeline 220 and the external drain pipeline 250 to be in communication with the drain pipeline 210 alternatively. In this way, the circulating pump 400 can provide driving force for the circulating filtration and the water draining of the washing machine, and only the communication direction of the switching device 270 needs to be controlled to realize the corresponding functions.

[0075] The water outlet end of the backwater pipeline 230 is connected to the window cushion 110 at the opening of the water tub 100, and the filtered water from the filter device 600 enters the water tub 100 through the window cushion 110.

[0076] In the embodiment, the washing machine is provided with the recycling device 500, which can collect the sewage discharged from the filter device 600. However, due to the limitation of the internal space of the washing machine, the filter device 600 and the recycling device 500 can be far apart, resulting in a long path for the sewage to be discharged into the recycling device 500. Figure 1As shown, the recovery device 500 and the filtering device 600 in the embodiment are respectively arranged at the left and right side regions of the top of the cabinet 10 of the washing machine, and the sewage in the filtering device 600 is difficult to be completely discharged into the recovery device 500 without external force. If the arrangement height of the recovery device 500 is higher than the sewage discharge port 6103 of the filtering device 600, the sewage may even be unable to be discharged.

[0077] The washing machine generally uses a traditional water pump to provide driving power for water flow, but since the filtering device 600 discharges sewage carrying filtered impurities into the recovery device 500, the sewage may cause blockage when passing through the pump body of the traditional pump, thereby causing failure of the washing machine.

[0078] To solve the problem of discharging sewage from the filtering device 600 into the recovery device 500, the washing machine in the embodiment is provided with a suction device, which can perform a suction action to suck air in the space outside the sewage discharge port 6103, thereby driving the sewage in the filtering device 600 to be discharged into the recovery device 500 under the action of pressure difference.

[0079] In the embodiment, an air pump 810 is used as the suction device. Specifically, when the filtering device 600 needs to discharge sewage, the air pump 810 is controlled to perform a suction action, air in the space outside the sewage discharge port 6103 is sucked out by the air pump 810, a negative pressure environment is formed in the pipeline outside the sewage discharge port 6103, and the sewage in the filtering device 600 can be discharged under the action of pressure difference, thereby entering the recovery device 500.

[0080] In the above manner, the sewage in the filtering device 600 can be efficiently and rapidly discharged into the recovery device 500 for collection, and meanwhile, the air pump 810 is only used to suck air to form a negative pressure environment, and the discharged sewage does not pass through the air pump 810, thereby avoiding the problem of blockage of the pump body caused by water pump delivery.

[0081] Meanwhile, a separation mechanism is further arranged between the sewage discharge port 6103 and the air pump 810, which can gradually disconnect the communication between the air pump 810 and the sewage discharge port 6103 with the discharge of the sewage, so as to prevent the sewage discharged from the sewage discharge port 6103 from being too large when the air pump 810 continuously sucks, and the sewage is sucked into the air pump 810. In this way, the air pump 810 can be protected, and the working performance of the air pump 810 can be prevented from being affected by the sewage.

[0082] In the specific scheme of the embodiment, the separation mechanism includes a floating member, and a vent hole 832 is arranged on the communication path between the air pump 810 and the sewage discharge port 6103. During the discharge of the sewage, the floating member rises with the water surface to block the vent hole 832 below the vent hole 832.

[0083] In this embodiment, the floating member is a floating ball 822, and the diameter of the floating ball 822 is greater than the diameter of the air hole 832.

[0084] Further, a sewage temporary storage device 820 with an internal cavity is arranged between the filtering device 600 and the recovery device 500, the suction pipeline 811 is in communication with the internal cavity of the sewage temporary storage device 820, and air in the internal cavity of the sewage temporary storage device 820 is sucked. The water outlet of the sewage temporary storage device 820 is higher than the sewage inlet 550 of the recovery device 500.

[0085] When the filtering device 600 discharges sewage, the air pump 810 is controlled to perform a suction action, air in the sewage temporary storage device 820 is sucked out by the air pump 810, and sewage in the filtering device 600 is discharged into the sewage temporary storage device 820 under the action of pressure difference. Then, the air pump 810 is closed, the suction action generated by the air pump 810 disappears, and the sewage in the sewage temporary storage device 820 can be further discharged into the recovery device 500 under the action of gravity.

[0086] The sewage discharge outlet 6103 is in communication with the sewage temporary storage device 820 through a sewage discharge pipeline 240, and a sewage discharge control valve 241 that can be opened / closed is arranged on the sewage discharge pipeline 240 to control the opening / closing of the sewage discharge pipeline 240.

[0087] When the circulating pump 400 drives the water in the water tank 100 to circulate and filter, the sewage discharge control valve 241 is in a closed state, and the sewage discharge pipeline 240 is disconnected. When it is necessary to discharge the sewage in the filtering device 600, the washing machine sequentially performs the following steps:

[0088] S1, the air pump 810 is controlled to perform a suction action, and air in the sewage temporary storage device 820 is sucked out;

[0089] S2, the sewage discharge control valve 241 is opened, the sewage discharge pipeline 240 is connected, and the sewage in the filtering device 600 is discharged into the sewage temporary storage device 820 under the action of pressure difference;

[0090] S3, the air pump 810 is closed, and the sewage in the sewage temporary storage device 820 is discharged into the recovery device 500 under the action of gravity.

[0091] The sewage discharge control valve 241 is kept in a closed state at the initial stage when the air pump 810 starts to perform a suction action, the filtering device 600 is not in communication with the sewage temporary storage device 820, and a more obvious negative pressure environment can be formed in the sewage temporary storage device 820. Then, the sewage discharge control valve 241 is opened, the sewage in the filtering device 600 can be driven by a greater driving force, and the sewage can be efficiently and sufficiently discharged into the sewage temporary storage device 820.

[0092] In a further aspect of the embodiment, the air pump 810 is a bidirectional pump, which can perform both the suction action to suck air and the blowing action to blow air into the sewage temporary storage device 820. In step S3, the air pump 810 is first closed to stop the air suction, and then opened again to perform the blowing action to blow air into the sewage temporary storage device 820 to drive the sewage therein to the recovery device 500.

[0093] In another aspect of the embodiment, the air pump 810 is a suction pump with only the suction function. The washing machine further comprises a blowing device (not shown in the figure) such as a blowing pump, which is in communication with the sewage temporary storage device. In the above aspect, step S3 comprises: closing the air pump 810, opening the blowing device, blowing air into the sewage temporary storage device 820 to drive the sewage therein to the recovery device 500.

[0094] In the embodiment, the floating ball 822 is arranged inside the sewage temporary storage device 820, and the air vent 832 is arranged on the sewage temporary storage device 820, preferably on the top wall. The isolation mechanism further comprises a guide portion 823 extending from the bottom of the sewage temporary storage device 820 to the air vent 832, and the guide portion 823 has a hollow channel, in which the floating ball 822 is arranged.

[0095] As shown in Figure 3 and Figure 4 , in the initial state, the sewage temporary storage device 820 is empty of water, and the floating ball 822 is located at the bottom end of the guide portion 823. During the process of the sewage being discharged into the sewage temporary storage device 820, the water level in the sewage temporary storage device 820 gradually rises. The side wall of the guide portion 823 is provided with a through hole for communicating the hollow channel with the space outside the guide portion 823, and the water level inside the guide portion 823 rises synchronously, so that the floating ball 822 always floats at the water level and gradually rises as the water level rises. As shown in Figure 5 and Figure 6 , when the sewage temporary storage device 820 is full of water, the floating ball 822 rises to the top of the sewage temporary storage device 820 along with the water level, and seals the air vent 832 from below to prevent the sewage from overflowing further upward through the air vent 832, so as to ensure that the sewage cannot overflow from the air vent 832 into the air pump 810.

[0096] In the above scheme, the air vent 832 is blocked by the floating ball 822 arranged in the sewage temporary storage device 820, the air vent 832 can be blocked when the sewage temporary storage device 820 reaches the full water state, on the premise of ensuring that the sewage does not enter the air pump 810, the filter device 600 can discharge a larger amount of sewage at a time, and the efficiency of sewage discharge is improved. The movement of the floating ball 822 is guided by the guide part 823, and the floating ball 822 can only reciprocate inside the guide part 823, avoiding the situation that the floating ball 822 cannot block the air vent 832 due to the deviation of the movement track.

[0097] In the embodiment, the guide part 823 is a circular tube structure, and the inner diameter of the guide part 823 is greater than the outer diameter of the floating ball 822. The floating ball 822 and the guide part 823 form a clearance fit, which reduces or even eliminates the frictional resistance existing when the floating ball 822 reciprocates inside the guide part 823, thereby avoiding the situation that the floating ball 822 is stuck inside the guide part 823 and cannot rise with the water surface.

[0098] In the preferred scheme of the embodiment, the guide part 823 is vertically arranged inside the sewage temporary storage device 820, which is more conducive to the floating ball 822 rising without obstruction to block the air vent 832 as the water surface rises.

[0099] In the further scheme of the embodiment, a buffer part 830 is arranged between the air pump 810 and the sewage temporary storage device 820, and the buffer part 830 has a buffer chamber inside, which is in communication with the internal cavity of the sewage temporary storage device 820 and the air pump 810 respectively.

[0100] Specifically, the air inlet end of the air pump 810 is connected to the suction pipeline 811, the suction pipeline 811 is connected to the buffer part 830, and the buffer part 830 is connected to the sewage temporary storage device 820 through the air vent pipeline 831.

[0101] In the above scheme, when the air pump 810 is turned on, the inside of the buffer part 830 and the inside of the sewage temporary storage device 820 can be sucked to a negative pressure state, and then when the sewage control valve 241 is opened, the sewage in the filter device 600 can be quickly discharged under the action of the pressure difference. When the sewage enters the sewage temporary storage device 820 too fast, the timing of the floating ball 822 floating to block the air vent 832 may be delayed relative to the sewage filling the sewage temporary storage device 820, resulting in a small amount of sewage overflowing before the air vent 832 is blocked. The overflowing sewage can be stored in the buffer chamber of the buffer part 830, and will not directly enter the air pump 810, further avoiding the problem of water entering the air pump 810.

[0102] In the preferred embodiment of the present application, the buffer part 830 is arranged above the sewage temporary storage device 820, and the air vent pipeline 831 extends vertically upward from the top wall of the sewage temporary storage device 820 and communicates with the buffer part 830. The air pump 810 is arranged above the buffer part 830, and the suction pipeline 811 extends vertically upward from the top wall of the buffer part 830 and communicates with the air pump 810 and the buffer chamber of the buffer part 830. In this way, the suction force required for the sewage to enter the buffer part 830 and the air pump 810 is greater, further preventing the air pump 810 from being filled with water.

[0103] In the present embodiment, the lower end of the air vent pipeline 831 is connected to the top wall of the sewage temporary storage device 820, and the connection between the air vent pipeline 831 and the sewage temporary storage device 820 forms an air vent hole 832. The diameter of the floating ball 822 is greater than the diameter of the air vent pipeline 831, and the floating ball 822 rises with the water surface to block the air vent hole 832, that is, the floating ball 822 moves to the lower end of the air vent pipeline 831 to block the opening of the lower end of the air vent pipeline 831.

[0104] In a further embodiment of the present application, the sewage temporary storage device 820 is provided with an air permeable hole 821, which is unidirectionally communicated from the outside to the inside of the sewage temporary storage device 820. The air permeable hole 821 is preferably arranged on the top wall of the sewage temporary storage device 820. After the air pump 810 sucks the inside of the sewage temporary storage device 820 to form a negative pressure environment and is turned off, external air will enter the inside of the sewage temporary storage device 820 through the air permeable hole 821 under the action of pressure difference, and then drive the sewage therein to be discharged into the recovery device 500.

[0105] In the above-mentioned embodiment, the opening area of the air permeable hole 821 is small, and when the air pump 810 is in an open state to perform a suction action, the air entering the sewage temporary storage device 820 through the air permeable hole 821 will not significantly affect the formation of the negative pressure environment. After the air pump 810 is turned off, the air in the sewage temporary storage device 820 is no longer sucked out, and due to the arrangement of the air permeable hole 821, the inside of the sewage temporary storage device 820 can quickly recover to near atmospheric pressure, and the entering air can push the sewage to be discharged into the recovery device 500. By arranging the air permeable hole 821 on the sewage temporary storage device 820, the situation that the air pressure in the recovery device 500 is too large and the sewage cannot flow into the recovery device 500 after the air pump 810 stops working is avoided.

[0106] On the other hand, by installing a one-way valve or similar structure on the air permeable hole 821 to control the unidirectional communication from the outside to the inside of the air permeable hole 821, the situation that the sewage overflows from the air permeable hole 821 after the sewage temporary storage device 820 is filled with water can be avoided.

[0107] In this embodiment, a recycling device 500 is installed inside the washing machine. Wastewater discharged from the filtration device 600 can enter the recycling device 500 for collection, instead of being directly discharged with the washing machine's drain water. This avoids the problem of microplastics in the wastewater entering the ecological cycle and posing a potential threat to the ecological environment and human health. A negative pressure environment is created by an air pump 810 drawing air from outside the drain outlet 6103 to drive the wastewater in the filtration device 600 to be discharged. Simultaneously, the wastewater storage device 820 and buffer section 830, as well as the float ball 822 and guide section 823 installed inside the wastewater storage device 820, maximize the protection that the discharged wastewater will not be sucked into the air pump 810, ensuring the working performance of the air pump 810.

[0108] Example 2

[0109] The difference between this embodiment and the first embodiment described above is that the isolation mechanism consisting of the float and the guide is located inside the buffer section.

[0110] Specifically, a vent is provided on the buffer section and connected to an air pump via a suction pipe. The vent is preferably located on the top wall of the buffer section. A guide section extending vertically upwards from the bottom to the vent is provided inside the buffer section. The side wall of the guide section has through holes, and a float is disposed inside the guide section.

[0111] In this embodiment, the volume of the wastewater storage device is set to be larger than the volume of the filtration device. Under normal operating conditions of the washing machine, wastewater generally will not completely fill the wastewater storage device. However, in some abnormal situations, a large amount of wastewater may enter the wastewater storage device, causing an overflow. In this case, the wastewater enters the buffer section upwards along the vent pipe and gradually accumulates in the buffer chamber of the buffer section, rather than being directly sucked into the air pump.

[0112] As sewage enters the buffer section, the water level gradually rises. The float rises along with the water level in the guide section, moving closer to the vent at the top. When the buffer section is also filled with sewage, the float rises to the top of the guide section, blocking the vent at the lower end of the suction pipe and preventing sewage from overflowing from the buffer section and being sucked into the pump.

[0113] Example 3

[0114] like Figure 7 As shown, the difference between this embodiment and the first embodiment above is that: both the sewage temporary storage device 820 and the buffer part 830 are provided with an isolation mechanism composed of a float 822 and a guide part 823. The top wall of the sewage temporary storage device 820 and the top wall of the buffer part 830 are respectively provided with vent holes 832 that can be blocked by the corresponding floats 822.

[0115] Specifically, the lower end of the venting pipe 831 is connected to the top wall of the sewage temporary storage device 820 to form a vent hole 832. The lower end of the suction pipe 811 is connected to the top wall of the buffer portion 830 to form another vent hole 832.

[0116] Normally, when the filter device 600 discharges sewage, the floating ball 822 in the sewage temporary storage device 820 rises with the water level until it blocks the vent hole 832 at the top of the sewage temporary storage device 820 to prevent sewage from overflowing from the sewage temporary storage device 820. However, when the floating ball 822 in the sewage temporary storage device 820 is unexpectedly stuck and cannot move, the venting pipe 831 and the sewage temporary storage device 820 will always be in communication. In the case of continuous discharge of sewage from the filter device 600, sewage will enter the buffer portion 830 along the venting pipe 831.

[0117] The buffer portion 830 of the present embodiment also has a floating ball 822. If sewage continuously enters the buffer portion 830, the floating ball 822 in the buffer portion 830 will gradually rise with the water level. When the buffer portion 830 is also filled with sewage, the floating ball 822 can block the vent hole 832 on the top wall of the buffer portion 830, i.e., seal the lower end of the suction pipe 811, so that sewage cannot overflow from the buffer portion 830 into the air pump 810.

[0118] In the present embodiment, floating balls 822 are provided in both the sewage temporary storage device 820 and the buffer portion 830, providing double protection. Even if the floating ball 822 in the sewage temporary storage device 820 fails and causes sewage to overflow, the floating ball 822 in the buffer portion 830 can still block the vent hole 832 at the lower end of the suction pipe 811 when the buffer portion 830 is filled with sewage, thereby preventing further overflow of sewage from the buffer portion 830 into the air pump 810, making it more secure and reliable.

[0119] Embodiment Four

[0120] The difference between the present embodiment and the above-mentioned Embodiment One is that the floating ball is arranged between the sewage temporary storage device and the air pump. Specifically, the floating ball is arranged in the venting pipe that connects the sewage temporary storage device and the buffer portion.

[0121] In the present embodiment, the venting pipe has a reduced-diameter section that gradually decreases in diameter from bottom to top, and the floating ball is arranged inside the reduced-diameter section. The diameter of the top end of the reduced-diameter section is smaller than the diameter of the floating ball, and the floating ball blocks when it rises to the top end of the reduced-diameter section.

[0122] To ensure that the floating ball can freely move back and forth inside the reduced-diameter section, the diameter of the bottom end of the reduced-diameter section is greater than the diameter of the floating ball. Further, the reduced-diameter section has a limiting portion below it to prevent the floating ball from falling into the sewage temporary storage device.

[0123] In one specific embodiment, the venting pipe has a tapered structure with a gradually decreasing cross-sectional diameter. Several small holes are provided on the top wall of the sewage storage device, communicating with the venting pipe. The float is confined within the venting pipe by the top wall of the sewage storage device. When sewage overflows from the sewage storage device into the venting pipe, the float rises with the water level until it reaches a certain height within the venting pipe, at which point the float completely adheres to the inner wall of the venting pipe circumferentially, achieving a seal.

[0124] In another specific embodiment, the diameter of the venting pipe gradually increases from bottom to top and then gradually decreases. The diameters of the top and bottom ends of the venting pipe are both smaller than the diameter of the float, while the maximum diameter of the venting pipe is larger than the diameter of the float. Because the diameter of the bottom end of the venting pipe is smaller than the diameter of the float, the float can be confined inside the venting pipe. When sewage overflows from the sewage storage device into the venting pipe, the float rises with the water level to a certain height in the venting pipe, and the float completely adheres to the inner wall of the venting pipe circumferentially, achieving a seal.

[0125] Example 5

[0126] like Figure 3 and Figures 8 to 11 As shown, this embodiment is a further limitation of the first embodiment above, wherein the wastewater inlet 550 of the recycling device 500 is provided with a unidirectional blocking member 540 that flows from the outside to the inside.

[0127] When the air pump 810 performs its suction action, the sealing component 540 can block the sewage inlet 550 of the recovery device 500, preventing air from being extracted from the sewage inlet 550 within the recovery device 500. This creates a relatively independent space between the sewage outlet 6103 and the recovery device 500. Under the suction action of the air pump 810, a negative pressure environment can be quickly formed outside the sewage outlet 6103, improving the efficiency of sewage discharge. After the air pump 810 is turned off, the suction action disappears, and the sealing component 540 can open the sewage inlet 550 under water pressure, allowing sewage to enter the recovery device 500 for collection.

[0128] Specifically, the sealing component 540 includes:

[0129] The substrate 541 is installed on the sewage inlet 550 of the recycling device 500;

[0130] The opening part 542 is movable relative to the base 541, opening / closing the space outside and inside the recycling device 500.

[0131] Further, the recovery device 500 comprises a shell 510 with a recovery chamber inside, and a sewage inlet 550 is arranged on the shell 510 of the recovery device 500, and the outer periphery of the sewage inlet 550 extends from the inner wall of the shell 510 of the recovery device 500 to the inside of the recovery device 500 to form a tubular part 551. The base body 541 is mounted at the extended end of the tubular part 551, and the opening part 542 is movably arranged opposite to the extended end of the tubular part 551 to open / close the opening of the extended end of the tubular part 551.

[0132] In detail, the base body 541 is sleeved on the extended end of the tubular part 551, and the opening part 542 covers the opening of the tubular part 551 from the outside of the tubular part 551 to achieve sealing, and the opening part 542 is flipped away from the tubular part 551 to open the opening. The structure of the sealing piece 540 is simple, and the opening part 542 abuts against the right end surface of the tubular part 551 and cannot be flipped to the inside of the tubular part 551, thereby achieving one-way conduction of the sewage inlet 550 from the outside to the inside.

[0133] In one scheme of the embodiment, the opening part 542 is made of flexible material capable of elastic deformation, such as rubber or the like. When the air pump 810 is opened, the part of the opening part 542 covering the opening deforms to protrude into the inside of the tubular part 551 to achieve sealing of the opening. The opening part 542 can wrap the included angle between the inner wall of the tubular part 551 and the right end surface of the tubular part 551 to a certain extent, thereby increasing the contact area of the opening part 542 with the opening of the tubular part 551. At the same time, the surface of the opening part 542 facing the tubular part 551 is formed as a convex surface, and the surface area is increased, that is, the force receiving area of the opening part 542 subjected to the negative pressure adsorption force is increased, thereby the sealing piece 540 can better seal the sewage inlet 550, and the negative pressure environment can be quickly formed.

[0134] Further, the opening part 542 is integrally formed with the base body 541, that is, the sealing piece 540 is integrally made of flexible material, and the base body 541 and the opening part 542 do not need additional connecting structure, and the opening part 542 and the base body 541 can be movably arranged, and the opening part 542 can open / close the opening of the right end of the tubular part 551.

[0135] In another scheme of the embodiment, the opening part of the sealing piece is made of hard material, and the surface of the opening part facing the opening of the tubular part is a convex surface protruding into the inside of the tubular part.

[0136] When the opening portion blocks the opening of the tubular section, its curved surface allows it to partially extend into the opening. Furthermore, the surface of the opening portion that contacts the opening of the tubular section is inclined relative to the end face of the tubular section, resulting in a more secure seal and a better sealing effect. Simultaneously, the curved structure of the opening portion increases the surface area, which in turn increases the area subjected to the suction force of the air pump, further enhancing the sealing performance and thus better creating a negative pressure environment between the drain port of the filter device and the recovery device.

[0137] Furthermore, the opening portion of the sealing component is separately provided from the base, and the two are connected in a relatively movable manner. Specifically, the opening portion and the base are rotatably connected, and the opening portion opens / closes the tubular opening through a flipping motion.

[0138] Alternatively, the opening and the base can be integrally molded from plastic, where both the opening and the base are rigid and will not undergo significant deformation. The opening and the base are connected by a thin connecting piece, which is thin enough to deform under relatively small forces, allowing relative movement between the opening and the base.

[0139] In a further embodiment, the outer periphery of the sewage inlet 550 extends a certain length from the outer wall of the housing 510 of the recycling device 500 to the outside of the recycling device 500 to form a connecting part 552. The connecting part 552 is used to connect to a pipeline and to the sewage temporary storage device 820 through the pipeline. The end of the pipeline can be sleeved on the connecting part 552, making installation more convenient.

[0140] In this embodiment, a unidirectional sealing element 540 is provided at the sewage inlet 550 of the recycling device 500. This sealing element 540 can seal the sewage inlet 550 of the recycling device 500 when the air pump 810 draws air, thereby creating a negative pressure environment more quickly and increasing the pressure difference that can be formed at the discharge port 6103, thus improving the efficiency of the filtration device 600 in discharging sewage. After the air pump 810 is turned off, the sealing element 540 can automatically open the sewage inlet 550 under the impact of water flow, allowing sewage to smoothly enter the recycling device 500 for collection.

[0141] Example 6

[0142] like Figure 2 and Figure 3 As shown, this embodiment is a further limitation of the first embodiment described above. The recycling device 500 includes:

[0143] The housing 510 has a recovery chamber inside;

[0144] A filter assembly 520 is disposed in the recovery chamber, dividing the recovery chamber into a first chamber 531 and a second chamber 532.

[0145] The drain port 6103 of the filtering device 600 is in communication with the first chamber 531, and the sewage carrying the filtered impurities enters the first chamber 531 and then enters the second chamber 532 after being filtered by the filtering assembly 520, and the filtered impurities are collected in the first chamber 531.

[0146] In the above scheme, after the recovery device 500 collects the sewage discharged by the filtering device 600, the sewage can be filtered by the internal filtering assembly 520 to separate the filtered impurities in the sewage. In this way, the user can directly collect and process the separated filtered impurities, avoiding the situation that the filtered impurities are mixed in the sewage and cannot be effectively processed.

[0147] Specifically, the filtering assembly 520 can be a frame horizontally arranged at a certain height in the recovery chamber and a filter screen laid on the frame. After the sewage carrying the filtered impurities enters the first chamber 531, the water can enter the second chamber 532 through the filtering assembly 520, and the filtered impurities are blocked by the filter screen and remain on the upper surface of the filtering assembly 520. The filter screen of the filtering assembly 520 can filter the microplastics in the sewage to prevent the microplastics from mixing into the water body.

[0148] In this embodiment, the recovery device 500 is inserted / extracted on the cabinet 10 of the washing machine, and the user can extract the recovery device 500 from the cabinet 10 for cleaning.

[0149] Specifically, the housing 510 of the recovery device 500 is inserted / extracted on the cabinet 10, and the upper side of the housing 510 has an open mouth. When the user extracts the housing 510 from the cabinet 10, the filtered impurities attached to the upper surface of the filtering assembly 520 can be cleaned through the open mouth on the upper side of the housing 510. The filtering assembly 520 is preferably detachably connected to the housing 510, and the user can detach the filtering assembly 520 from the inside of the housing 510 and take it out for cleaning, which is more convenient to operate.

[0150] In the preferred scheme of this embodiment, a water outlet is arranged on the second chamber 532 for discharging the filtered clean water. By arranging the water outlet on the second chamber 532, the clean water entering the second chamber 532 can be discharged from the recovery device 500 in time, avoiding the overflow of the recovery device 500 when the amount of sewage discharged by the filtering device 600 is large. Otherwise, the capacity of the second chamber 532 needs to be increased, that is, the volume of the recovery device 500 needs to be increased, which leads to a large space occupied by the recovery device 500 in the washing machine, which is not conducive to the miniaturization of the overall volume of the washing machine.

[0151] On the other hand, the water in the second chamber 532 can be automatically discharged through the water outlet, and when the user cleans the recycling device 500, only the filter impurities on the filter assembly 520 need to be cleaned, without the need to manually pour out the clean water in the second chamber 532. When the filter assembly 520 is detachably installed in the shell 510, the user does not even need to completely remove the shell 510 from the cabinet 10 of the washing machine, but only needs to remove the filter assembly 520 for cleaning, which is more convenient to operate.

[0152] Preferably, the water outlet of the second chamber 532 is communicated with the tub 100 through a pipeline, and the clean water filtered by the filter assembly 520 can be introduced into the tub 100 for reuse, thereby saving the water consumption of the washing machine. Alternatively, the water outlet of the second chamber 532 can be communicated with the outside of the washing machine through a pipeline, and the filtered water without filter impurities can be directly discharged from the washing machine, without the problem of microplastics entering the ecological cycle.

[0153] In the embodiment, the washing machine further comprises a detergent dispenser, and the detergent dispenser has a water inlet box 300 communicated with the tub 100. The water outlet of the second chamber 532 of the recycling device 500 is communicated with the water inlet box 300, and the filtered clean water is introduced into the water inlet box 300, and then enters the tub 100 through the water inlet box 300.

[0154] In the preferred embodiment of the present embodiment, the recycling device 500 is arranged inside the water inlet box 300 as a whole, and after the sewage discharged by the filter device 600 is filtered, the clean water flows out through the water outlet on the second chamber 532 and enters the water inlet box 300, and then enters the tub 100 along the pipeline communicating the water inlet box 300 and the tub 100.

[0155] Through the above structure, on the one hand, the water is returned to the tub 100 through the water inlet box 300 of the detergent dispenser, and the clean water filtered in the recycling device 500 can also flush the detergent that may exist inside the water inlet box 300 when passing through the water inlet box 300, thereby improving the utilization rate of the detergent. On the other hand, the space inside the water inlet box 300 can be fully utilized, and a separate pipeline is not needed to communicate the recycling device 500 and the water inlet box 300, thereby saving the installation space inside the washing machine.

[0156] In the embodiment, the filter assembly 520 is arranged inside the recycling device 500, which can filter the collected sewage, thereby separating the filter impurities from the water and making it more convenient for the user to handle. By arranging the recycling device 500 inside the water inlet box 300, the clean water filtered in the recycling device 500 can enter the tub 100 through the water inlet box 300 for reuse, thereby saving the water consumption of the washing machine, and the internal structure of the washing machine is more compact.

[0157] Embodiment Seven

[0158] As Figure 2 and Figure 3 shown, the embodiment provides a control method of the washing machine described in Embodiment One, controlling the air pump 810 to perform suction action multiple times when the filter device 600 needs to discharge sewage, thereby completing the discharge of sewage in the filter device 600 in multiple times.

[0159] In one aspect of the embodiment, the washing machine controls the sewage in the filter device 600 to be discharged in multiple times according to the amount of sewage discharged by the air pump 810 each time it performs suction action.

[0160] Specifically, a water level detection device is arranged on the sewage temporary storage device 820 to detect the water level inside the sewage temporary storage device 820. The control method of the washing machine comprises:

[0161] A1, controlling the air pump 810 to perform suction action;

[0162] A2, when the water level in the sewage temporary storage device 820 rises to a first set water level, the air pump 810 is turned off;

[0163] A3, when the water level in the sewage temporary storage device 820 falls to a second set water level, returning to step A1.

[0164] Further, according to the maximum amount of sewage in the filter device 600 and the difference between the first set water level and the second set water level, the washing machine is provided with a preset number N1 of times for the air pump 810 to perform suction action, and when the number of times of performing step A1 reaches N1, the washing machine does not perform step A3 after completing step A2, ending the sewage discharge process of the filter device 600.

[0165] In another aspect of the embodiment, the washing machine controls the sewage in the filter device 600 to be discharged in multiple times according to the duration of the air pump 810 performing suction action each time.

[0166] Specifically, the control method of the washing machine comprises:

[0167] B1, controlling the air pump 810 to perform suction action;

[0168] B2, when the duration of the air pump 810 performing suction action reaches a first preset duration t1, the air pump 810 is turned off;

[0169] B3, when the air pump 810 is turned off for a second preset duration t2, returning to step B1.

[0170] Further, according to the maximum amount of sewage in the filter device 600 and the amount of sewage that can be discharged by the suction action lasting for the first preset time t1, the washing machine is provided with a preset number N2 of times of execution of the suction action by the air pump 810, and when the number of times of execution of step B1 reaches N2, the washing machine does not execute step B3 after the execution of step B2 is completed, and the sewage discharge process of the filter device 600 is ended.

[0171] Through the above two schemes, the washing machine can control the amount of sewage discharged by the filter device 600 when the air pump 810 performs a suction action once, ensure that the amount of sewage does not exceed the maximum volume of the sewage temporary storage device 820, and perform the next suction action after waiting for the sewage received in the sewage temporary storage device 820 to be discharged into the recovery device 500 after the execution of the suction action is completed. In this way, it is ensured that the sewage temporary storage device 820 will not have the problem of sewage overflow during the process of discharging sewage by the filter device 600, and the situation of sewage overflowing the sewage temporary storage device 820 and being sucked into the air pump 810 is avoided.

[0172] In this embodiment, the volume of the sewage temporary storage device 820 can be smaller than the volume of the filter device 600, and by controlling the amount of sewage discharged by the air pump 810 when performing a suction action once, the sewage temporary storage device 820 can be prevented from overflowing, and the overall volume of the sewage temporary storage device 820 can be reduced, which is beneficial to saving the installation space inside the washing machine.

[0173] The above only describes the preferred embodiments of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with the preferred embodiments, it is not intended to limit the present application, and any person skilled in the art can make some changes or modifications to the above-mentioned technical content without departing from the scope of the technical solution of the present application, and any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A washing machine, comprising: water container; The circulating filter pipeline is connected to the water tank at both ends; A filtration device is installed on the circulating filtration pipeline and connected to the water tank. It receives water from the water tank for filtration and has a drain outlet for discharging wastewater. Its characteristic is that it further includes: The suction device performs a suction action, driving the sewage in the filter device to be discharged through the drain outlet under the action of pressure difference; A recycling device is used to collect wastewater discharged from the filtration device; An isolation mechanism is installed between the sewage outlet and the suction device, which disconnects the connection between the suction device and the sewage outlet as the sewage is discharged. The filtration device is connected to a wastewater storage device with an internal cavity, and the wastewater storage device is connected to a recycling device; the suction device is connected to the internal cavity of the wastewater storage device and suctions air from inside the wastewater storage device. The isolation mechanism includes a floating component, and a vent is provided on the communication path between the suction device and the sewage outlet; during the sewage discharge process, the floating component rises with the water surface to the vent and blocks the vent. The floating element is disposed inside the sewage storage device, and the vent is disposed on the sewage storage device; and / or, the floating element is disposed between the sewage storage device and the suction device.

2. The washing machine according to claim 1, characterized in that, The floating component is a float, and the diameter of the float is larger than the diameter of the vent hole.

3. The washing machine according to claim 1, characterized in that, A buffer section is provided between the suction device and the sewage storage device. The buffer section has a buffer chamber inside, which is connected to the internal cavity of the sewage storage device and the suction device. The floating component is disposed inside the sewage storage device, and the vent is disposed on the sewage storage device; and / or the floating component is disposed inside the buffer section, and the vent is disposed on the buffer section.

4. The washing machine according to claim 1, characterized in that, The isolation mechanism also includes a guide section extending from the bottom of the sewage storage device to the vent, the guide section having a hollow channel, and the floating element disposed in the hollow channel.

5. The washing machine according to claim 4, characterized in that, The guide section extends vertically.

6. The washing machine according to claim 4, characterized in that, The side wall of the guide is provided with a through hole for connecting the hollow channel and the external space of the guide.

7. The washing machine according to claim 4, characterized in that, The floating component is a float, and the guide part is a cylindrical structure with an inner diameter larger than the outer diameter of the float.

8. The washing machine according to claim 1, characterized in that, The wastewater storage device is connected to a venting pipe, which is connected to a suction device; the floating element is a float inside the wastewater storage device, and the diameter of the float is larger than the diameter of the venting pipe.

9. The washing machine according to claim 1, characterized in that, The floating component is a float, and a venting pipe is provided between the sewage storage device and the suction device. The venting pipe has a narrowing section whose diameter gradually decreases from bottom to top, and the float is located inside the narrowing section. The diameter of the top of the narrowing section is smaller than the diameter of the float, and the float rises with the water surface to the top of the narrowing section to achieve a seal.

10. The washing machine according to any one of claims 1-9, characterized in that, The wastewater storage device is provided with a vent hole, which allows unidirectional flow from the outside of the wastewater storage device to the inside.

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