A washing machine and a control method thereof

Abstract

The present application belongs to the technical field of washing machines, and discloses a washing machine and a control method thereof.The washing machine comprises a water containing cylinder, a filtering device in communication with the water containing cylinder, a suction device, and a recovery device.The filtering device receives water in the water containing cylinder for filtering and has a sewage discharge port for discharging sewage to the outside.The suction device performs a suction action to drive sewage in the filtering device to be discharged through the sewage discharge port under the action of a pressure difference.The recovery device is used for collecting sewage discharged by the filtering device.In the present application, the recovery device can collect sewage discharged by the filtering device, and a pressure difference can be formed inside and outside the sewage discharge port of the filtering device through the suction action of the suction device, thereby providing a driving force for discharging sewage from the filtering device.Meanwhile, compared with the conventional water pump pumping mode, the problem of the filtering impurities carried in the sewage blocking the water pump is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of washing machines, in particular, relates to a washing machine and a control method thereof. BACKGROUND

[0002] In the process of washing clothes by the washing machine, due to the friction between clothes and clothes, and between clothes and the washing machine itself, lint will fall off from the clothes and mix into the washing water. If the lint in the washing water cannot be removed, it will be attached to the surface of the clothes after the washing is completed, which will affect 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 is 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, which will affect the filtering effect of the filter and cause the blockage of the drain valve / drain pump, and bacteria are easy to breed in the filter, so the filter needs to be cleaned in time, otherwise the washing water will be polluted and the clothes will be polluted again, which will affect the health of the user. However, most of the washing machines need the user to take down the filter to clean it manually, which is inconvenient to operate.

[0004] In view of the above problems, the existing technology proposes a filter device with a self-cleaning function, which can automatically discharge the attached filtering sundries. Most of the washing machines applying the above filter device directly discharge the sewage carrying the filtering sundries into the drain flow of the washing machine after completing the self-cleaning of the filter device, which brings the following problems.

[0005] On the one hand, due to the relatively compact space inside 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, which causes the sewage to remain in the filter device, and long-term use will still cause problems such as bacterial breeding.

[0006] On the other hand, in recent years, the concept of microplastics has been proposed and gradually received increasing attention in the field of environmental protection. Microplastics generally refer to plastic fragments and particles with a diameter of less than 5 millimeters, which are mixed into the water environment of nature. Due to the high specific surface area, microplastics can easily adsorb organic pollutants in water to form organic pollution spheres. 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 accumulated microplastics in the body, which may cause the accumulation of microplastics in the human body and affect human health.

[0007] Research found that an important source of microplastics is the wastewater discharged by household washing machines. This is because the washing machine washes the clothes and washes off the clothes fibers, and with the popularity of chemical fiber fabrics, these shed clothes fibers are discharged with the washing machine drainage flow and become microplastics mixed into the natural water environment. At the same time, microplastics may also come from industrial products made of plastic materials, and the outer barrel, drain pipe and other structures in the washing machine are generally made of plastic, which 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 washing machine drainage has become a problem to be solved in the environmental protection field. The washing machine with a filter device self-cleaning function in the prior art has the problem of high content of microplastics in the washing machine drainage because the filter impurities containing microplastics directly flow into the washing machine drainage.

[0008] Therefore, the present application is proposed. SUMMARY

[0009] 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 and a control method thereof. The filter device has a self-cleaning function, a recovery device is arranged in the washing machine to collect the sewage discharged by the filter device, and the filter impurities in the sewage are prevented from being directly discharged. At the same time, a suction device is arranged to form a pressure difference inside and outside the sewage discharge port of the filter device, which provides a driving force for the discharge of the sewage in the filter device, ensuring that the sewage is discharged smoothly and sufficiently from the filter device.

[0010] To solve the above technical problems, the basic idea of the technical solution of the present application is:

[0011] A washing machine comprises:

[0012] A water tub;

[0013] A filter device in communication with the water tub, receiving water in the water tub for filtration, having a sewage discharge port for discharging sewage outwardly;

[0014] Further comprising:

[0015] A suction device performing a suction action to drive the sewage in the filter device to be discharged through the sewage discharge port under the action of the pressure difference;

[0016] A recovery device for collecting the sewage discharged by the filter device.

[0017] Further, the suction device is connected to the sewage discharge port of the filter device and the recovery device through a suction pipeline and performs the suction action according to the instruction;

[0018] Preferably, the suction device is a gas pump.

[0019] Further, the sewage outlet of the filter device is connected to a sewage temporary storage device having an internal cavity, and the sewage temporary storage device is connected to a recovery device, and the suction pipeline is connected to the internal cavity of the sewage temporary storage device;

[0020] The suction device performs a suction action, and the sewage in the filter device enters the sewage temporary storage device under the action of pressure difference; the suction device is closed, and the sewage in the sewage temporary storage device is discharged into the recovery device;

[0021] Preferably, the sewage temporary storage device is provided with a gas permeable hole for connecting the internal cavity of the sewage temporary storage device to the external space; when the suction device is closed, the external air enters the internal cavity of the sewage temporary storage device through the gas permeable hole, and drives the sewage in the internal cavity to be discharged into the recovery device;

[0022] More preferably, the gas permeable hole is arranged at the top region of the sewage temporary storage device.

[0023] Further, the water outlet of the sewage temporary storage device is higher than the sewage inlet of the recovery device, and when the suction device is closed, the sewage in the sewage temporary storage device is discharged into the recovery device under the action of gravity;

[0024] And / or, the washing machine further comprises a gas charging device for charging gas into the sewage temporary storage device to drive the sewage in the sewage temporary storage device to be discharged into the recovery device; or the suction device is further used for charging gas into the sewage temporary storage device to drive the sewage in the sewage temporary storage device to be discharged into the recovery device.

[0025] Further, a buffer part is arranged between the suction device and the sewage temporary storage device, and the buffer part has a buffer cavity inside; the buffer cavity is connected to the internal cavity of the sewage temporary storage device, and the suction pipeline is connected to the buffer part to connect the suction device to the buffer cavity.

[0026] Further, an openable / closable sewage discharge control valve is arranged between the sewage outlet of the filter device and the suction inlet end of the suction pipeline.

[0027] Preferably, the sewage outlet of the filter device is connected to a sewage temporary storage device having an internal cavity, and the sewage temporary storage device is connected to a recovery device, and the suction pipeline is connected to the sewage temporary storage device, and the sewage discharge control valve is arranged between the sewage outlet of the filter device and the sewage temporary storage device.

[0028] Further, the recovery device comprises:

[0029] A housing having a recovery cavity inside;

[0030] A filter assembly arranged in the recovery cavity to divide the recovery cavity into a first cavity and a second cavity;

[0031] The sewage carrying impurities enters the first chamber, and after being filtered by the filtering assembly, enters the second chamber, and the filtered impurities are collected in the first chamber;

[0032] Preferably, a water outlet is arranged on the second chamber for discharging the filtered clean water.

[0033] Another object of the present application is to provide a control method of the washing machine as described above, comprising: controlling the suction device to perform a suction action, and sewage in the filtering device is discharged into the recovery device through the sewage outlet under the action of pressure difference.

[0034] Further, the sewage outlet of the filtering device is communicated with a sewage temporary storage device having an internal cavity, the sewage temporary storage device is communicated with the recovery device, and the suction device is communicated with the sewage temporary storage device.

[0035] The control method comprises the following steps:

[0036] S1, controlling the suction device to perform a suction action, air in the sewage temporary storage device is sucked out, and sewage in the filtering device is discharged into the sewage temporary storage device under the action of pressure difference.

[0037] S2, closing the suction device, and sewage in the sewage temporary storage device is discharged into the recovery device.

[0038] Preferably, the water outlet of the sewage temporary storage device is higher than the sewage inlet of the recovery device, and in step S2, sewage in the sewage temporary storage device is discharged into the recovery device under the action of gravity.

[0039] Preferably, the washing machine further comprises a gas charging device communicated with the sewage temporary storage device, and step S2 comprises: closing the suction device, opening the gas charging device, and introducing gas into the sewage temporary storage device to drive sewage therein to be discharged into the recovery device.

[0040] Alternatively, the suction device is further used to introduce gas into the sewage temporary storage device, and step S2 comprises: closing the suction device, and then controlling the suction device to perform a gas charging action to introduce gas into the sewage temporary storage device to drive sewage therein to be discharged into the recovery device.

[0041] Further, an openable / closable sewage discharge control valve is arranged between the filtering device and the sewage temporary storage device.

[0042] Step S1 specifically comprises the following steps:

[0043] S11, controlling the suction device to perform a suction action, and air in the sewage temporary storage device is sucked out.

[0044] S12, opening the sewage discharge control valve, and sewage in the filtering device is discharged into the sewage temporary storage device under the action of pressure difference.

[0045] Compared with the prior art, the present application has the following beneficial effects.

[0046] In the present application, the sewage discharged by the filtering device can be collected by the recycling device arranged in the washing machine, so that the lint and other filtering impurities carried by the sewage can be prevented from being directly discharged from the washing machine, and the microplastics in the filtering impurities can be prevented from entering the ecological cycle with the water flow, thereby affecting the ecological environment and human health. The suction device performs the suction action, so that a pressure difference can be formed inside and outside the sewage discharge port of the filtering device, and driving force is provided for the discharge of the sewage in the filtering device, thereby preventing the situation that the sewage cannot be discharged due to the long distance or height difference between the filtering device and the recycling device.

[0047] In the present application, the sewage temporary storage device and the buffer part can accommodate the sewage discharged by the filtering device during the operation of the suction device, thereby protecting the suction device and preventing the sewage discharged by the filtering device from entering the suction device through the pipeline, thereby affecting the working performance of the suction device. The air holes can make the air pressure in the sewage temporary storage device reach the balance with the external air pressure quickly after the suction device is closed, thereby preventing the situation that the sewage cannot flow into the recycling device.

[0048] In the present application, the filtering assembly arranged in the recycling device can filter the collected sewage, so that the filtering impurities can be separated from the water, thereby facilitating the user to handle the filtering impurities. The water outlet arranged on the second chamber can discharge the filtered clean water from the recycling device at any time, so that the situation that the recycling device is overflowed can be avoided without expanding the volume of the recycling device itself, and the internal space of the washing machine can be saved.

[0049] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0050] The accompanying drawings are part of the present application and serve to provide a further understanding of the present application, and the schematic 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:

[0051] Figure 1 is a structural schematic diagram of a washing machine in an embodiment of the present application;

[0052] Figure 2 is a structural schematic diagram of a washing machine in an embodiment of the present application;

[0053] Figure 3 is a structural schematic diagram of a washing machine in an embodiment of the present application;

[0054] Figure 4 is the schematic diagram of the communication structure between the filtering device and the recovery device in the second embodiment of the present application;

[0055] Figure 5 is the partial enlarged view of the sewage inlet of the recovery device in the third embodiment of the present application (normal state);

[0056] Figure 6 is the partial enlarged view of the sewage inlet of the recovery device in the third embodiment of the present application (occlusion state when the air pump is opened);

[0057] Figure 7 is the partial enlarged view of the sewage inlet of the recovery device in the third embodiment of the present application (opening state after the air pump is closed);

[0058] Figure 8 is the schematic diagram of the occlusion member in the third embodiment of the present application;

[0059] Figure 9 is the schematic diagram of the communication structure between the filtering device and the recovery device in the fourth embodiment of the present application (no water in the sewage temporary storage device);

[0060] Figure 10 is the enlarged schematic diagram of A in the fourth embodiment of the present application; Figure 9

[0061] Figure 11 is the schematic diagram of the communication structure between the filtering device and the recovery device in the fourth embodiment of the present application (water in the sewage temporary storage device);

[0062] Figure 12 is the enlarged schematic diagram of B in the fourth embodiment of the present application; Figure 11

[0063] Figure 13 is the schematic diagram of the communication structure between the filtering device and the recovery device in the sixth embodiment of the present application;

[0064] Figure 14 is the schematic diagram of the internal structure of the washing machine in the seventh embodiment of the present application.

[0065] ​​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.

[0066] It should be noted that the drawings and the written description are not intended to limit the scope of the inventive concept in any way, but are merely to illustrate the inventive concept to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0067] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be described clearly and completely below in conjunction with the drawings of 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.

[0068] 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 merely 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 limiting the present application.

[0069] 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 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.

[0070] Embodiment one

[0071] As Figures 1 to 3 shown, the embodiment provides a washing machine, comprising:

[0072] a water tub 100;

[0073] a filtering device 600, in communication with the water tub 100, receiving water in the water tub 100 for filtration, having a sewage outlet 6103 for discharging sewage outward;

[0074] a recycling device 500 for collecting sewage discharged by the filtering device 600.

[0075] In the embodiment, the washing machine is provided with a circulating filtration pipeline having two ends in communication with the water tub 100, and the filtering device 600 is arranged on the circulating filtration pipeline. A circulating pump 400 is further arranged on the circulating filtration pipeline, which drives water in the water tub 100 to continuously circulate through the circulating filtration 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.

[0076] The sewage outlet 6103 is arranged on the filtering device 600, and the filtering impurities remaining in the filtering device 600 after filtration 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, making the use 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, without being discharged from the washing machine together with the water flow. Through the above method, the microplastics in the filtering impurities are prevented from being discharged with the water flow and entering the ecological cycle, thereby causing harm to the ecological environment and human health.

[0077] Due to the limitation of the internal space of the washing machine, the filtering device 600 and the recycling device 500 may be far apart, resulting in a long path required for the sewage to be discharged into the recycling device 500. As Figure 1 shown, in the embodiment, the recycling device 500 and the filtering device 600 are arranged on the left and right side regions of the top of the cabinet 10 of the washing machine, and under the condition of not relying on external force, the sewage in the filtering device 600 is difficult to be completely discharged into the recycling device 500. If the setting height of the recycling device 500 is higher than the sewage outlet 6103 of the filtering device 600, the sewage may not be discharged.

[0078] In the washing machine, a traditional water pump is generally used to provide power for driving the water flow, but since the filtering device 600 discharges sewage carrying filtering impurities into the recycling device 500, using the traditional pumping method may cause blockage when the sewage passes through the pump body, thereby causing failure of the washing machine.

[0079] To solve the problem that the filter device 600 discharges sewage into the recovery device 500, the washing machine in the embodiment is provided with a suction device, and the suction device can perform a suction action to suck air outside the sewage discharge port 6103, so as to drive the sewage in the filter device 600 to be discharged into the recovery device 500 under the action of pressure difference.

[0080] In the embodiment, the air pump 810 is used as the suction device. Specifically, when the filter 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, so that the pipeline outside the sewage discharge port 6103 forms a negative pressure environment, and the sewage in the filter device 600 can be discharged under the action of pressure difference, and finally discharged into the recovery device 500.

[0081] In the above manner, the sewage in the filter device 600 can be efficiently and rapidly discharged into the recovery device 500 for collection, and 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 that the pump body is easily blocked by the water pump.

[0082] In the embodiment, the air pump 810 is connected to the space between the sewage discharge port 6103 of the filter device 600 and the recovery device 500 through the suction pipeline 811, and performs a suction action according to an instruction. The instruction is an instruction for controlling the filter device 600 to discharge sewage.

[0083] Further, the sewage discharge port 6103 of the filter device 600 is connected to the sewage temporary storage device 820 having an internal cavity, the sewage temporary storage device 820 is connected to the recovery device 500, and the suction pipeline 811 is connected to the internal cavity of the sewage temporary storage device 820.

[0084] When the filter device 600 discharges sewage outward, the washing machine performs the following steps:

[0085] S1, control the air pump 810 to perform a suction action, air in the sewage temporary storage device 820 is sucked out by the air pump 810, and the sewage in the filter device 600 is discharged into the sewage temporary storage device 820 under the action of pressure difference;

[0086] S2, turn off the air pump 810, and the suction action generated by the air pump 810 disappears, and the sewage in the sewage temporary storage device 820 is discharged into the recovery device 500.

[0087] In the above scheme, by setting the sewage temporary storage device 820, the sewage is temporarily stored in the internal cavity of the sewage temporary storage device 820 under the action of the pressure difference after being extracted from the filter device 600. In this way, the situation that the sewage is sucked into the air pump 810 along the suction pipeline 811 due to the large suction force of the air pump 810 when the sewage flows out of the filter device 600 quickly is avoided, which protects the air pump 810 and prevents the working performance of the air pump 810 from being affected.

[0088] Preferably, an air vent is arranged on the top of the sewage temporary storage device 820 and communicates with the suction pipeline 811. The suction pipeline 811 is connected to the top region of the sewage temporary storage device 820, and the sewage can enter the suction pipeline 811 only when the internal cavity of the sewage temporary storage device 820 is filled with sewage. In this way, the internal cavity of the sewage temporary storage device 820 can be utilized to the maximum extent, and the amount of sewage that can be accommodated by the sewage temporary storage device 820 is increased.

[0089] In the embodiment, the water outlet of the sewage temporary storage device 820 is higher than the sewage inlet of the recovery device 500, and the sewage in the sewage temporary storage device 820 is discharged into the recovery device 500 under the action of gravity after the air pump 810 is closed and stopped.

[0090] In the preferred scheme of the embodiment, the air-permeable hole 821 is arranged on the sewage temporary storage device 820 and is used to communicate the internal cavity of the sewage temporary storage device 820 with the external space. After the air pump 810 is closed, the external air enters the internal cavity of the sewage temporary storage device 820 through the air-permeable hole 821 and drives the sewage in the sewage temporary storage device 820 to be discharged into the recovery device 500. The air-permeable hole 821 is similar to the air vent for communicating the suction pipeline 811 and is also arranged in the top region of the sewage temporary storage device 820.

[0091] In the above scheme, the opening area of the air-permeable hole 821 is small, and when the air pump 810 is in an open state to perform the suction action, the air entering the sewage temporary storage device 820 through the air-permeable hole 821 does not obviously affect the formation of the negative pressure environment. After the air pump 810 is closed, the air in the sewage temporary storage device 820 is no longer extracted, and due to the arrangement of the air-permeable hole 821, the internal cavity of the sewage temporary storage device 820 can quickly recover to close to atmospheric pressure. The sewage is pushed out by the entering air and enters 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.

[0092] In this embodiment, the air pump 810 is a bidirectional pump, which can perform both suction and blowing actions. In step S2, the air pump 810 is first closed to stop the suction action, and then opened again to perform the blowing action to drive the sewage in the sewage temporary storage device 820 into the recovery device 500.

[0093] In another scheme of this embodiment, the air pump 810 is a suction pump having 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 scheme, step S2 comprises: closing the air pump 810, opening the blowing device, and blowing air into the sewage temporary storage device 820 to drive the sewage therein into the recovery device 500.

[0094] In a further scheme of this embodiment, a sewage discharge control valve 241 that can be opened and closed is arranged between the sewage discharge port 6103 of the filter device 600 and the suction inlet end of the suction pipeline 811. Specifically, the sewage discharge control valve 241 is arranged between the filter device 600 and the sewage temporary storage device 820.

[0095] In detail, the sewage discharge port 6103 and the sewage temporary storage device 820 are in communication through a sewage discharge pipeline 240, and the sewage discharge control valve 241 is arranged on the sewage discharge pipeline 240 to control the opening and closing of the sewage discharge pipeline 240.

[0096] When the circulating pump 400 drives the water in the water tub 100 to circulate and filter, the sewage discharge control valve 241 is in the closed state, and the sewage discharge pipeline 240 is disconnected. When it is necessary to discharge the sewage in the filter device 600, the washing machine performs the following steps in sequence:

[0097] S11, controlling the air pump 810 to perform the suction action, and the air in the sewage temporary storage device 820 is sucked out;

[0098] S12, opening the sewage discharge control valve 241 to connect the sewage discharge pipeline 240, and the sewage in the filter device 600 is discharged into the sewage temporary storage device 820 under the action of the pressure difference;

[0099] S2, closing the air pump 810, and the sewage in the sewage temporary storage device 820 is discharged into the recovery device 500.

[0100] In the above scheme, the sewage discharge control valve 241 is kept in the closed state at the initial stage when the air pump 810 starts to perform the suction action, and the filter device 600 and the sewage temporary storage device 820 are not in communication, so that a more obvious negative pressure environment can be formed in the sewage temporary storage device 820 more quickly. Then the sewage discharge control valve 241 is opened, and the sewage in the filter device 600 can be driven by a greater driving force, so that it can be efficiently and sufficiently discharged into the sewage temporary storage device 820.

[0101] In a further aspect of the embodiment, the recycling device 500 specifically comprises:

[0102] a housing 510 having a recycling chamber inside;

[0103] a filtering assembly 520 arranged in the recycling chamber, separating the recycling chamber into a first chamber 531 and a second chamber 532.

[0104] The sewage temporary storage device 820 is in communication with the first chamber 531, and the sewage carrying the filtering impurities enters the first chamber 531 and then enters the second chamber 532 after being filtered by the filtering assembly 520, and the filtering impurities are collected in the first chamber 531.

[0105] In the above aspect, after the recycling device 500 collects the sewage discharged by the filtering device 600, the sewage can be filtered by the filtering assembly 520 inside to separate the filtering impurities in the sewage. In this way, the user can directly collect and process the separated filtering impurities, avoiding the situation that the filtering impurities are mixed in the sewage and cannot be effectively processed.

[0106] Specifically, the filtering assembly 520 can be a frame horizontally arranged at a certain height in the recycling chamber and a filter screen laid on the frame, and the filtering assembly 520 forms the first chamber 531 on the upper side and the second chamber 532 on the lower side. After the sewage carrying the filtering impurities enters the first chamber 531, the water can enter the second chamber 532 through the filtering assembly 520, and the filtering impurities are blocked by the filter screen and remain on the upper surface of the filtering assembly 520.

[0107] Among them, 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.

[0108] In this embodiment, the recycling device 500 is inserted / extracted on the cabinet 10 of the washing machine, and the user can extract the recycling device 500 from the cabinet 10 for cleaning.

[0109] Specifically, the housing 510 of the recycling 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 filtering 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 with 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.

[0110] In the preferred embodiment of the present embodiment, the second chamber 532 is provided with a water outlet for discharging filtered clean water. By providing a water outlet on the second chamber 532, the clean water entering the second chamber 532 can be discharged from the recycling device 500 in time, avoiding the overflow of the recycling 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, i.e. the volume of the recycling device 500 needs to be increased, which leads to a larger space occupied by the recycling device 500 in the washing machine, which is not conducive to the miniaturization of the overall volume of the washing machine.

[0111] 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, he only needs to clean the filtering impurities on the filtering assembly 520, without the need to manually pour out the clean water in the second chamber 532. When the filtering assembly 520 is detachably mounted in the housing 510, the user does not even need to completely remove the housing 510 from the cabinet 10 of the washing machine, but only needs to remove the filtering assembly 520 for cleaning, which is more convenient to operate.

[0112] Preferably, the water outlet of the second chamber 532 is communicated with the water tub 100 through a pipeline, so that the filtered clean water of the filtering assembly 520 can be introduced into the water 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, so that the filtered water without filtering impurities can be directly discharged from the washing machine, without causing the problem of microplastics entering the ecological cycle.

[0113] In the present embodiment, the filtering device 600 specifically comprises:

[0114] a filtering cavity 610, which is provided with a water inlet 6101, a filtered water outlet 6102 and a sewage outlet 6103, the water inlet 6101 and the filtered water outlet 6102 being connected to the circulating filtering pipeline;

[0115] a filtering mechanism 620, which is rotatably arranged in the filtering cavity 610;

[0116] a driving mechanism 660, which drives the filtering mechanism 620 to rotate in the filtering cavity 610.

[0117] 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.

[0118] 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, the sewage can be discharged from the sewage outlet 6103 by the action of the air pump 810 and collected by the recycling device 500.

[0119] In this embodiment, the self-cleaning operation of starting the driving mechanism 660 to rotate the filtering mechanism 620 and / or the sewage discharge operation of controlling the air pump 810 to perform the suction action to discharge the sewage from the filtering device 600 are performed at least once during the operation of the washing machine for one complete washing program. When the sewage discharge operation is performed, the filtering mechanism 620 can remain in a stationary state or be driven to rotate by the driving mechanism 660.

[0120] Further, the cleaning particles 680 are arranged in the filtering cavity 610 of the filtering device 600, which are used to rub and collide with the inner wall of the filtering cavity 610 and the outer wall of the filtering mechanism 620 with the water flow. 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 the 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.

[0121] 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 filtering 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.

[0122] The circulating filtering pipeline of the washing machine in the embodiment specifically includes:

[0123] The water tub drain pipe 260 connects the water tub 100 and the water inlet end of the circulating pump 400;

[0124] The drain pipeline 210 is connected to the water outlet end of the circulating pump 400 at one end and connected to the switching device 270 at the other end;

[0125] The circulating pipeline 220 is connected to the switching device 270 at one end and connected to the water inlet 6101 of the filtering device 600 at the other end;

[0126] The backwater pipeline 230 is connected to the filtered water outlet 6102 of the filtering device 600 at one end and in communication with the water tub 100 at the other end, and the filtered water is delivered to the water tub 100.

[0127] 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 filtering and the draining of the washing machine, and only the communication direction of the switching device 270 needs to be controlled to realize the corresponding functions.

[0128] 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 filtering device 600 enters the water tub 100 through the window cushion 110.

[0129] In the embodiment, the recycling device 500 is arranged in the washing machine to collect the sewage discharged from the filtering device 600, so as to avoid the problem that the filtered impurities in the sewage directly discharged from the washing machine enter the ecological cycle and affect the ecological environment and human health. The filtering assembly 520 is arranged in the recycling device 500 to filter the collected sewage, so as to separate the filtered impurities from the water and facilitate the cleaning of the filtered impurities.

[0130] The air pump 810 is arranged in the washing machine to suck air between the filtering device 600 and the recycling device 500, so that a negative pressure environment is formed outside the sewage outlet 6103, and the sewage in the filtering device 600 is driven to flow out of the sewage outlet 6103 and into the recycling device 500 through the pressure difference. Even if the filtering device 600 and the recycling device 500 are far apart or have a height difference, the sewage in the filtering device 600 can be fully discharged. The sewage temporary storage device 820 is arranged between the filtering device 600 and the recycling device 500 and directly communicates with the air pump 810, so that the air pump 810 does not suck in sewage when sucking air. The sewage is driven to flow out by the air pump 810 sucking air, which avoids the problem of water pump blockage caused by impurities in the sewage compared with the traditional water pump driving mode, and the sewage flows out more smoothly.

[0131] Embodiment Two

[0132] As shown in Figure 4 the further limitation of the above-mentioned embodiment one, the 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. The buffer chamber communicates with the internal cavity of the sewage temporary storage device 820, and the suction pipeline 811 is connected with the buffer part 830 to guide the air pump 810 to communicate with the buffer chamber.

[0133] In the above-mentioned scheme, the air pump 810 is opened to suck the inside of the buffer part 830 and the inside of the sewage temporary storage device 820 to a negative pressure state, and then the sewage in the filtering device 600 can be quickly discharged under the action of the pressure difference after the sewage control valve 241 is opened. By arranging the buffer part 830 between the air pump 810 and the sewage temporary storage device 820, even if the discharged sewage is large and causes overflow from the sewage temporary storage device 820, the overflowed part of the sewage can be stored in the buffer chamber of the buffer part 830, and will not directly enter the air pump 810.

[0134] In the preferred scheme of the embodiment, the buffer part 830 is arranged above the sewage temporary storage device 820 and communicates through the vertically extending air pipeline 831. Further, the air pump 810 is arranged above the buffer part 830, and the suction pipeline 811 vertically extends to communicate the air pump 810 with 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, which further prevents the air pump 810 from being filled with water.

[0135] In this embodiment, by providing a buffer section 830 between the air pump 810 and the sewage storage device 820, sewage overflowing from the sewage storage device 820 can be stored, preventing excessive sewage from entering the air pump 810. The sewage storage device 820, air pipe 831, buffer section 830, suction pipe 811, and air pump 810 are arranged sequentially from bottom to top, increasing the required height for sewage to enter the air pump 810, thus requiring greater suction force, thereby more effectively preventing water from entering the air pump 810.

[0136] Example 3

[0137] like Figures 3 to 8 As shown, this embodiment is a further limitation of the above embodiment one or two, and the sewage inlet 550 of the recycling device 500 is provided with a unidirectional blocking member 540 from the outside to the inside.

[0138] When the air pump 810 performs its suction action, the sealing member 540 can block the sewage inlet 550 of the recovery device 500, preventing air from being drawn out of the sewage inlet 550 within the recovery device 500, thus creating a relatively independent space between the sewage outlet 6103 and the recovery device 500. This allows a negative pressure environment to be quickly created outside the sewage outlet 6103 under the suction action of the air pump 810, improving the efficiency of sewage discharge. After the air pump 810 is turned off, the suction action disappears, and the sewage flows out of the sewage storage device 820 due to gravity or the increased air pressure generated by air entering the sewage storage device 820. Under water pressure, the sealing member 540 can open the sewage inlet 550, allowing the sewage to enter the recovery device 500 for collection.

[0139] Specifically, the sealing component 540 includes:

[0140] The substrate 541 is installed on the sewage inlet 550 of the recycling device 500;

[0141] The opening part 542 is movable relative to the base 541, opening / closing the space outside and inside the recycling device 500.

[0142] Furthermore, a wastewater inlet 550 is disposed on the housing 510 of the recycling device 500, and the outer periphery of the wastewater inlet 550 extends a certain length from the inner wall of the housing 510 of the recycling device 500 into the recycling device 500 to form a tubular portion 551. A base 541 is installed at the extended end of the tubular portion 551, and an opening portion 542 is movable relative to the extended end of the tubular portion 551 to open / close the opening at the extended end of the tubular portion 551.

[0143] In detail, the base 541 is sleeved on the extended end of the tubular part 551, the opening part 542 covers the opening of the tubular part 551 from the outside of the tubular part 551 to achieve the plugging, and the opening part 542 flips to open the opening in the direction away from the tubular part 551. The structure of the plugging member 540 is simple, and the opening part 542 abuts against the right end surface of the tubular part 551 and cannot flip to the inside of the tubular part 551, thereby achieving the one-way conduction of the sewage inlet 550 from the outside to the inside.

[0144] 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, thereby achieving the plugging 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 and the opening of the tubular part 551. Meanwhile, the surface of the opening part 542 facing the tubular part 551 is formed as a convex surface, 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 plugging member 540 can better seal the sewage inlet 550, and the rapid formation of the negative pressure environment is facilitated.

[0145] Further, the opening part 542 is integrally formed with the base 541, that is, the plugging member 540 is integrally made of flexible material, and the base 541 and the opening part 542 do not need additional connecting structure, and the opening part 542 and the base 541 can relatively move, thereby the opening part 542 can open / close the opening at the right end of the tubular part 551 through the movement.

[0146] In another scheme of the embodiment, the opening part of the plugging member 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. Specifically, the opening of the tubular part is circular, the opening part is in the form of a circular sheet, and the surface of the opening part facing the opening of the tubular part is an arc surface protruding in the middle.

[0147] When the opening part plugs the opening of the tubular part, the opening part has an arc surface and can partially protrude into the inside of the opening, and the surface of the opening part contacting the opening of the tubular part is relatively inclined to the end surface of the tubular part, thereby the opening part can more firmly plug the opening and has better sealing effect. Meanwhile, the arc surface structure of the opening part increases the surface area, that is, the force receiving area of the opening part subjected to the suction force of the air pump is increased, thereby the sealing performance can be further improved, and the negative pressure environment can be better formed between the sewage outlet of the filtering device and the recycling device.

[0148] Further, the opening part of the plugging member is separately arranged with the base and can relatively move. Specifically, the opening part and the base are rotatably connected, and the opening part opens / plugs the opening of the tubular part through the flipping movement.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] Example 4

[0153] like Figures 9 to 12 As shown, this embodiment is a further limitation of the above-described embodiments two or three. The washing machine further includes an isolation mechanism disposed between the drain outlet 6103 and the air pump 810. This isolation mechanism can gradually disconnect the connection between the air pump 810 and the drain outlet 6103 as sewage is discharged, preventing excessive sewage from being drawn into the air pump 810 when the air pump 810 is continuously pumping. This protects the air pump 810, preventing sewage from entering and affecting its performance.

[0154] In this specific embodiment, the isolation mechanism includes a floating component, and a vent 832 is provided on the communication path between the air pump 810 and the sewage outlet 6103. During the sewage discharge process, the floating component rises with the water level to below the vent 832 and blocks the vent 832.

[0155] In this embodiment, the floating component is a float 822, and the diameter of the float 822 is larger than the diameter of the vent 832.

[0156] In a further aspect of the embodiment, the float 822 is arranged inside the sewage temporary storage device 820, and the air vent 832 is arranged on the top wall of the sewage temporary storage device 820. Preferably, 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 float 822 is arranged.

[0157] As shown in Figure 9 and Figure 10 , in the initial state, there is no water in the sewage temporary storage device 820, and the float 822 is located at the bottom end of the guide portion 823. During the process of discharging sewage 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 connecting the hollow channel and the space outside the guide portion 823, and the water level inside the guide portion 823 rises synchronously. The float 822 always floats at the water level and gradually rises as the water level rises. As shown in Figure 11 and Figure 12 , when the sewage temporary storage device 820 is full of water, the float 822 rises to the top of the sewage temporary storage device 820 along with the water level, and blocks the air vent 832 from below, so that the sewage cannot overflow further upward through the air vent 832, ensuring that the sewage cannot overflow from the air vent 832 into the air pump 810.

[0158] In the above-mentioned aspect, the float 822 arranged in the sewage temporary storage device 820 is used to block the air vent 832. The air vent 832 can be blocked when the sewage temporary storage device 820 is full of water. On the premise of ensuring that the sewage cannot enter the air pump 810, the filter device 600 can discharge a larger amount of sewage at one time, thereby improving the efficiency of discharging sewage. By arranging the guide portion 823 to guide the movement of the float 822, the float 822 can only move reciprocatingly inside the guide portion 823, avoiding the situation that the movement track of the float 822 deviates and fails to block the air vent 832.

[0159] In the embodiment, the guide portion 823 has a circular tube structure, and the inner diameter of the guide portion 823 is greater than the outer diameter of the float 822. The gap between the float 822 and the guide portion 823 is formed to reduce or even eliminate the frictional resistance when the float 822 moves reciprocatingly inside the guide portion 823, thereby avoiding the situation that the float 822 is stuck inside the guide portion 823 and cannot rise along with the water level.

[0160] In a preferred aspect of the embodiment, the guide portion 823 extends vertically inside the sewage temporary storage device 820, which is more conducive to the float 822 rising along with the water level without obstruction to block the air vent 832.

[0161] In this embodiment, the lower end of the vent pipe 831 is connected to the top wall of the sewage storage device 820, and the connection between the vent pipe 831 and the sewage storage device 820 forms a vent hole 832. The diameter of the float 822 is larger than the diameter of the vent pipe 831. The float 822 rises with the water level and blocks the vent hole 832. That is, when the float 822 moves to the lower end of the vent pipe 831, it blocks the lower opening of the vent pipe 831.

[0162] In this embodiment, by setting a float 822 and a guide 823 in the sewage temporary storage device 820, the float 822 can block the vent 832 above when the sewage temporary storage device 820 is full of sewage, preventing sewage from overflowing from the vent 832, thus preventing sewage from overflowing into the air pump 810 and ensuring the working performance of the air pump 810.

[0163] Example 5

[0164] The difference between this embodiment and the fourth embodiment described above is that the isolation mechanism composed of the float and the guide is located inside the buffer section.

[0165] Specifically, a vent is provided on the top wall of the buffer section, and it is connected to an air pump through a suction pipe. A guide section is provided inside the buffer section, extending vertically upward from the bottom to the vent. The side wall of the guide section has a through hole, and a float is located inside the guide section.

[0166] 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 cavity of the buffer section, rather than being directly sucked into the air pump.

[0167] 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.

[0168] Example 6

[0169] like Figure 13 As shown, the difference between this embodiment and the above embodiment four 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, and 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 float 822.

[0170] Specifically, the lower end of the vent pipe 831 is connected to the top wall of the sewage storage device 820, forming a vent hole 832. The lower end of the suction pipe 811 is connected to the top wall of the buffer section 830, forming another vent hole 832.

[0171] Under normal circumstances, when the filter device 600 discharges sewage, the float 822 in the sewage storage device 820 rises with the water level until it reaches the top of the sewage storage device 820, where it blocks the vent 832 and prevents sewage from overflowing from the sewage storage device 820. However, if the float 822 in the sewage storage device 820 becomes accidentally stuck and cannot move, the vent pipe 831 will remain connected to the sewage storage device 820. As the filter device 600 continues to discharge sewage, the sewage will flow upwards along the vent pipe 831 into the buffer section 830.

[0172] In this embodiment, a float 822 is also provided inside the buffer section 830. If sewage continues to enter the buffer section 830, the float 822 inside the buffer section 830 will gradually rise with the water level. When the buffer section 830 is also filled with sewage, the float 822 can block the vent 832 on the top wall of the buffer section 830, that is, seal off the lower end of the suction pipe 811, so that sewage cannot overflow from the buffer section 830 into the air pump 810.

[0173] In this embodiment, floats 822 are provided in both the sewage storage device 820 and the buffer section 830, providing dual protection. Even if the float 822 in the sewage storage device 820 fails and causes sewage to overflow, the float 822 in the buffer section 830 can still prevent sewage from further overflowing into the air pump 810 by blocking the vent 832 at the lower end of the suction pipe 811 when the buffer section 830 is full of sewage, making it safer and more reliable.

[0174] Example 7

[0175] like Figure 4 and Figure 14 As shown, this embodiment is a further limitation of the above embodiment two. The washing machine also includes a detergent dispensing device, which has a water inlet box 300 connected to the water tank 100. The outlet of the second chamber 532 of the recycling device 500 is connected to the water inlet box 300, allowing filtered clean water to be passed into the water inlet box 300 and then into the water tank 100.

[0176] In the above scheme, the recycling device 500 filters the collected sewage, and the filtered clean water is returned to the water tank 100 through the water inlet box 300 for reuse. This can flush out any detergent that may be present inside the water inlet box 300 and improve the utilization rate of the detergent.

[0177] In the embodiment, the water inlet box 300 and the water outlet of the second chamber 532 of the recovery device 500 are connected by a pipeline. The filtered clean water is discharged from the water outlet, enters the water inlet box 300 through the pipeline, and then enters the water tub 100 through the pipeline connecting the water inlet box 300 and the water tub 100 to participate in the washing process.

[0178] In a preferred scheme of the embodiment, the recovery device 500 is arranged inside the water inlet box 300. After the filtered water discharged by the filtering device 600 is filtered, the clean water flows out of the water outlet on the second chamber 532 and directly enters the water inlet box 300, and then enters the water tub 100 along the pipeline connecting the water inlet box 300 and the water tub 100.

[0179] Through the above structure, the space inside the water inlet box 300 can be fully utilized, and the pipeline connecting the recovery device 500 and the water inlet box 300 does not need to be arranged separately, so that the internal structure of the washing machine is more compact, thereby saving the installation space inside the washing machine.

[0180] Embodiment Eight

[0181] As shown in Figure 2 and Figure 3 The embodiment provides a control method of the washing machine described in Embodiment One. The air pump 810 performs the suction action multiple times when the filtering device 600 needs to discharge the sewage, so that the discharge of the sewage in the filtering device 600 is completed in multiple times.

[0182] In a scheme of the embodiment, the washing machine controls the sewage in the filtering device 600 to be discharged in multiple times according to the amount of sewage discharged by the air pump 810 each time the suction action is performed.

[0183] 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 the following steps:

[0184] A1, controlling the air pump 810 to perform the suction action;

[0185] A2, the water level in the sewage temporary storage device 820 rises to a first set water level, and the air pump 810 is turned off;

[0186] A3, the water level in the sewage temporary storage device 820 drops to a second set water level, and returns to step A1.

[0187] Further, according to the maximum amount of sewage in the filtering 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 of performing the suction action by the air pump 810. When the number of times of performing step A1 reaches N1, the washing machine does not perform step A3 after the completion of step A2, and ends the sewage discharge process of the filtering device 600.

[0188] In another aspect of the embodiment, the washing machine controls the sewage in the filtering device 600 to be discharged in multiple times according to the duration of each suction action performed by the air pump 810.

[0189] Specifically, the control method of the washing machine comprises:

[0190] B1, controlling the air pump 810 to perform a suction action;

[0191] B2, when the duration of the suction action performed by the air pump 810 reaches a first preset duration t1, the air pump 810 is turned off;

[0192] B3, when the air pump 810 is turned off for a second preset duration t2, the step B1 is returned to.

[0193] Further, according to the maximum amount of sewage in the filtering device 600 and the amount of sewage that can be discharged when the suction action is performed for the first preset duration t1, the washing machine is provided with a preset number N2 of times of performing the suction action by the air pump 810, and when the number of times of performing the step B1 reaches N2, the washing machine does not perform the step B3 after the step B2 is performed, and the sewage discharge process of the filtering device 600 is ended.

[0194] Through the above two aspects, the washing machine can control the amount of sewage discharged from the filtering 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 the sewage received in the sewage temporary storage device 820 is discharged into the recovery device 500 after the performance of the suction action is completed. In this way, it is ensured that the sewage temporary storage device 820 will not overflow during the process of discharging sewage from the filtering device 600, and the situation that the sewage overflows the sewage temporary storage device 820 and is sucked into the air pump 810 is avoided.

[0195] In the embodiment, the volume of the sewage temporary storage device 820 can be smaller than the volume of the filtering device 600, and by controlling the amount of sewage discharged when the air pump 810 performs a suction action once, the overflow of the sewage temporary storage device 820 can be avoided, 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.

[0196] 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 made on the basis of the technical essence of the present application to the above embodiments 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; The sewage outlet of the filtration device is connected to a sewage storage device with an internal cavity, the sewage storage device is connected to a recycling device, and the suction device is connected to the internal cavity of the sewage storage device through a suction pipe. When the suction device performs a suction action, the sewage in the filtration device enters the sewage storage device under the action of pressure difference; when the suction device is turned off, the sewage in the sewage storage device is discharged into the recycling device.

2. The washing machine according to claim 1, characterized in that, The suction device performs a suction action according to the instruction, and the suction device is an air pump.

3. The washing machine according to claim 1, characterized in that, The wastewater storage device is provided with a vent hole to connect the internal cavity of the wastewater storage device with the external space; when the suction device is closed, external air enters the internal cavity of the wastewater storage device through the vent hole, driving the wastewater inside to be discharged into the recycling device.

4. The washing machine according to claim 3, characterized in that, The vent is located in the top area of ​​the sewage storage device.

5. The washing machine according to claim 1, characterized in that, The outlet of the sewage storage device is higher than the sewage inlet of the recycling device. When the suction device is closed, the sewage in the sewage storage device is discharged into the recycling device under the action of gravity. And / or, the washing machine further includes an air pumping device for introducing gas into the wastewater storage device to drive the wastewater therein into the recycling device; or the suction device is further used for introducing gas into the wastewater storage device to drive the wastewater therein into the recycling device.

6. The washing machine according to any one of claims 1-5, characterized in that, A buffer section is provided between the suction device and the sewage storage device, and the buffer section has a buffer chamber inside; the buffer chamber is connected to the internal cavity of the sewage storage device, and the suction pipeline is connected to the buffer section to conduct the suction device and the buffer chamber.

7. The washing machine according to any one of claims 1-5, characterized in that, A drain control valve that can be opened / closed is provided between the drain outlet of the filter device and the suction inlet of the suction pipeline.

8. The washing machine according to claim 7, characterized in that, The sewage control valve is installed between the sewage outlet of the filter device and the sewage temporary storage device.

9. The washing machine according to any one of claims 1-5, characterized in that, The recycling device includes: The shell has an internal recovery chamber; A filter assembly is disposed within the recovery chamber, dividing the recovery chamber into a first chamber and a second chamber; Wastewater carrying filtered impurities enters the first chamber, is filtered by the filter assembly, and then enters the second chamber, where the filtered impurities are collected in the first chamber.

10. The washing machine according to claim 9, characterized in that, The second chamber is provided with a water outlet for discharging filtered clean water.

11. A control method for a washing machine as described in any one of claims 1-10, characterized in that, include: The suction device is controlled to perform a suction action, and the sewage in the filter device is discharged through the drain outlet into the recycling device under the action of pressure difference.

12. The control method for a washing machine according to claim 11, characterized in that, The control method includes the following steps: S1. Control the suction device to perform the suction action. The air in the sewage storage device is extracted, and the sewage in the filter device is discharged into the sewage storage device under the action of pressure difference. S2. Turn off the suction device, and discharge the sewage in the sewage storage device into the recycling device.

13. The control method for a washing machine according to claim 12, characterized in that, The outlet of the sewage storage device is higher than the sewage inlet of the recycling device. In step S2, the sewage in the sewage storage device is discharged into the recycling device under the action of gravity.

14. The control method for a washing machine according to claim 12, characterized in that, The washing machine also includes an air pumping device connected to the sewage storage device. Step S2 includes: turning off the suction device, turning on the air pumping device, introducing gas into the sewage storage device, and driving the sewage therein to be discharged into the recycling device. Alternatively, the suction device can also be used to introduce gas into the sewage storage device. Step S2 includes: turning off the suction device, then controlling the suction device to perform an air pumping action to introduce gas into the sewage storage device and drive the sewage therein to be discharged into the recycling device.

15. The control method for a washing machine according to any one of claims 12-14, characterized in that, A drain control valve that can be opened / closed is provided between the filtration device and the wastewater storage device; Step S1 specifically includes the following steps: S11. Control the suction device to perform the suction action, and the air in the sewage temporary storage device is extracted. S12. Open the sewage discharge control valve, and the sewage in the filter device will be discharged into the sewage storage device under the action of pressure difference.

Images