A washing machine

Abstract

The present invention discloses a washing machine, comprising: a water drum; a filtering device, connected to the water drum, receiving water in the water drum for filtering, and having a sewage outlet for discharging sewage; a sewage temporary storage device, having an internal chamber connected to the sewage outlet of the filtering device; a recovery device, connected to the internal chamber of the sewage temporary storage device, wherein sewage discharged from the filtering device is collected in the recovery device through the sewage temporary storage device; and a suction device, which performs a suction action and drives the sewage in the filtering device into the sewage temporary storage device under the action of a pressure difference. In the present invention, the suction device can first suck the sewage in the filtering device into the sewage temporary storage device and then discharge it into the recovery device, thereby avoiding the situation where the suction force generated by the suction device is too strong and the sewage is directly sucked into the suction device, thereby preventing water from entering the suction device and affecting its working performance.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing machines, and in particular relates to a washing machine. Background Art

[0002] During the washing process, friction between clothes and between the washing machine itself can cause lint to fall off and mix into the wash water. If the lint in the wash water isn't removed, it's likely to adhere to the surface of the clothes after washing, affecting the cleaning effect. To address this issue, existing washing machines are equipped with filters to filter out lint. During the washing process, the wash water circulates through the filters to remove the lint from the water.

[0003] Existing washing machine filters are typically located inside the inner tub or drain pump to filter lint and other debris from the wash water. However, after prolonged use, the filter can become filled with lint and other impurities, affecting its effectiveness, clogging the drain valve / drain pump, and easily breeding bacteria. Prompt cleaning is crucial to prevent contamination of the wash water, secondary contamination of clothing, and adverse health effects. However, most washing machines require users to remove the filter manually for cleaning, which is inconvenient.

[0004] To address these issues, self-cleaning filters have been proposed, capable of autonomously removing trapped impurities. However, most washing machines using these filters, after completing the self-cleaning process, drain the wastewater, carrying the impurities, directly into the washing machine's drain stream, which in turn creates the following issues.

[0005] On the one hand, due to the compact interior of the washing machine, the drainage path from the filter to the outside is long and may have certain height differences, making it difficult to fully drain the sewage from the filter without the help of a driving force, resulting in incomplete self-cleaning of the filter. Even after long-term use of the washing machine, the accumulation of filtered impurities inside the filter cannot be avoided, causing hygiene problems.

[0006] Existing washing machines typically use a water pump to power the water flow. However, if a water pump is used to transport wastewater discharged from a filter, lint and other impurities in the wastewater can remain inside the pump over time, clogging the pump and causing malfunction. Therefore, finding a way to drain the wastewater using a drive mechanism that doesn't come into direct contact with the wastewater has become a pressing issue.

[0007] On the other hand, in recent years, the concept of microplastics has been proposed in the field of environmental protection and has gradually received increasing attention. Microplastics generally refer to plastic fragments and particles with a diameter of less than 5 mm. When mixed into the natural aquatic environment, due to their high specific surface area, they easily absorb organic pollutants in the water, forming organic pollution spheres. Microplastics floating in the water are easily consumed by organisms lower in the food chain, such as mussels and zooplankton. However, since microplastics cannot be digested, when these bottom-level organisms are preyed upon by organisms above, the microplastics continue to accumulate in the bodies of these organisms. As organisms at the top of the food chain, humans' food sources include organisms that accumulate microplastics in their bodies, which in turn causes the accumulation of microplastics in the human body, potentially affecting human health.

[0008] Studies have found that a major source of microplastics is the wastewater discharged from household washing machines. This is because washing machines rinse away clothing fibers when washing clothes. With the prevalence of synthetic fabrics, these shed clothing fibers are discharged with the washing machine's drainage water and become microplastics that are mixed into the natural water environment. At the same time, microplastics can also come from industrial products made of plastic materials. The outer drum, drain pipe and other structures in washing machines are generally made of plastic. After long-term use, plastic fragments will inevitably be produced due to aging and other reasons. Therefore, how to reduce the content of microplastics in washing machine drainage has become an urgent problem to be solved in the field of environmental protection. However, in the existing washing machines with self-cleaning filter devices, the filtered impurities containing microplastics are directly discharged into the washing machine's drainage water, resulting in the problem of excessively high microplastic content in the washing machine's drainage.

[0009] In view of this, the present invention is proposed. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a washing machine with a filtering device, the filtering device having a self-cleaning function, a recovery device is provided inside the washing machine, which can collect sewage discharged by the filtering device, and a sewage temporary storage device is provided between the filtering device and the recovery device. The suction action is performed by the suction device to generate a pressure difference between the inside of the sewage temporary storage device and the inside of the filtering device, driving the sewage in the filtering device to be discharged and stored in the sewage temporary storage device, thereby avoiding the situation where the sewage is sucked into the suction device.

[0011] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0012] A washing machine, comprising:

[0013] water container;

[0014] The filtering device is connected to the water storage drum, receives water in the water storage drum for filtering, and has a sewage outlet for discharging sewage to the outside;

[0015] Also includes:

[0016] A sewage temporary storage device having an internal cavity connected to a sewage outlet of the filtering device;

[0017] The recovery device is connected to the internal cavity of the sewage temporary storage device, and the sewage discharged by the filtering device is collected in the recovery device through the sewage temporary storage device;

[0018] The suction device performs a suction action to drive the sewage in the filtering device into the sewage temporary storage device under the action of pressure difference.

[0019] Furthermore, the sewage temporary storage device is provided with a first vent connected to the suction device.

[0020] Furthermore, the sewage temporary storage device is provided with an air vent for connecting the internal volume of the sewage temporary storage device with the external space;

[0021] 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 external air enters the internal cavity of the sewage temporary storage device through the air vent, driving the sewage therein to be discharged into the recovery device.

[0022] Furthermore, a buffer portion is provided between the suction device and the sewage temporary storage device, and a buffer chamber is provided inside the buffer portion; the buffer chamber is communicated with the first vent on the sewage temporary storage device, and the suction device is communicated with the buffer chamber.

[0023] Furthermore, a second vent connected to the suction device is provided on the buffer portion.

[0024] Furthermore, the second vent of the buffer portion is connected to a suction pipeline, and the suction pipeline is extended to be connected to an air inlet end of the suction device.

[0025] Furthermore, the first vent of the sewage temporary storage device is connected to a vent pipe, and the vent pipe extends to communicate with the buffer chamber of the buffer part.

[0026] Furthermore, the water outlet of the sewage temporary storage device is higher than the sewage inlet of the recovery device, the suction device is closed, and the sewage in the sewage temporary storage device is discharged into the recovery device under the action of gravity;

[0027] And / or, the washing machine also includes an aerating device for introducing gas into the sewage temporary storage device to drive the sewage therein to be discharged into the recovery device; or the suction device is also used to introduce gas into the sewage temporary storage device to drive the sewage therein to be discharged into the recovery device.

[0028] Furthermore, the washing machine further comprises a detection device for detecting the discharge of sewage from the filter device; the suction device is configured to stop the suction action when the detection device detects that the sewage in the filter device is completely discharged.

[0029] Furthermore, the amount of sewage that can be accommodated between the sewage outlet of the filtering device and the sewage inlet of the recovery device is greater than or equal to the maximum amount of sewage that can be accommodated by the filtering device;

[0030] Preferably, the volume of the sewage temporary storage device is greater than or equal to the volume of the filtering device.

[0031] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0032] In the present invention, the recovery device provided in the washing machine can collect the sewage discharged by the filtering device, prevent the filtered impurities such as lint carried in the sewage from being directly discharged from the washing machine, and avoid the microplastics in the filtered impurities from entering the ecological cycle with the drainage water flow, causing an impact on the ecological environment and human health. A sewage temporary storage device is provided between the filtering device and the recovery device, and the suction device performs a suction action to form a negative pressure environment in the sewage temporary storage device, thereby utilizing the pressure difference to drive the sewage to be discharged from the filtering device. The discharged sewage is stored in the sewage temporary storage device, thereby avoiding the situation where the sewage is subjected to a large suction force and is sucked into the suction device. The suction device does not come into direct contact with the sewage during the entire process of the sewage being discharged from the filtering device into the recovery device, thereby avoiding the problem of pump body blockage that may exist in water pump transportation.

[0033] In the present invention, a buffer portion having a buffer chamber is provided between the sewage temporary storage device and the suction device. Even if the sewage temporary storage device overflows, the overflowed sewage can be collected in the buffer portion and will not directly enter the suction device, thereby protecting the suction device.

[0034] In the present invention, a device with both vacuuming and air-inflating functions is selected as the suction device, or an air-inflating device is additionally connected to the sewage temporary storage device. After the sewage in the filtering device is completely discharged into the sewage temporary storage device, gas is introduced into it. By increasing the air pressure inside the sewage temporary storage device, the sewage therein is pressed into the recovery device, which is conducive to the sewage in the sewage temporary storage device being fully discharged into the recovery device for collection, thereby reducing the residual sewage in the sewage temporary storage device.

[0035] In the present invention, a detection device is provided in the washing machine to detect the discharge of sewage from the filter device. The suction device is controlled to stop the suction action based on the detection result of the detection device, so that the sewage in the filter device can be emptied in one suction action, and the sewage discharge efficiency is high. The volume of the sewage temporary storage device is set to be larger than the volume of the filter device, ensuring that the sewage discharged from the filter device can all enter the sewage temporary storage device without overflowing, thereby preventing the sewage from overflowing and being sucked into the suction device, and better protecting the suction device.

[0036] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0038] Figure 1 is a schematic structural diagram of a washing machine according to an embodiment of the present invention;

[0039] Figure 2 Schematic diagram of the internal structure of the washing machine in the first and sixth embodiments of the present invention;

[0040] Figure 3 is a schematic diagram of the communication structure between the filtering device and the recovery device in the first and sixth embodiments of the present invention;

[0041] Figure 4 This is a partial enlarged view of the sewage inlet of the recovery device in Example 2 of the present invention (normal state);

[0042] Figure 5 This is a partial enlarged view of the sewage inlet of the recovery device in the second embodiment of the present invention (blocked state when the air pump is turned on);

[0043] Figure 6 This is a partial enlarged view of the sewage inlet of the recovery device in the second embodiment of the present invention (open state after the air pump is turned off);

[0044] Figure 7 Schematic diagram of the structure of the blocking member in the second embodiment of the present invention;

[0045] Figure 8 Schematic diagram of the communication structure between the filtering device and the recovery device in the third embodiment of the present invention (no water in the sewage temporary storage device);

[0046] Figure 9 This invention Figure 8A magnified schematic diagram of point A in the middle;

[0047] Figure 10 Schematic diagram of the communication structure between the filtering device and the recovery device in the third embodiment of the present invention (the sewage temporary storage device is full of water);

[0048] Figure 11 This invention Figure 10 A magnified schematic diagram of point B in the middle;

[0049] Figure 12 It is a schematic diagram of the communication structure between the filtering device and the recovery device in the fifth embodiment of the present invention.

[0050] In the figure: 10, box body; 100, water tank; 110, window pad; 210, drainage pipe; 220, circulation pipe; 230, return pipe; 240, sewage pipe; 241, sewage control valve; 250, external discharge pipe; 260, water tank drain pipe; 270, switching device; 300, water inlet box; 400, circulation pump; 500, recovery device; 510, shell; 520, filter assembly; 531, first chamber; 532, second chamber; 540, blocking member; 541, base; 542, opening portion; 550, sewage inlet; 551, pipe shaped portion; 552, connecting portion; 600, filtering device; 610, filtering 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 vent; 822, float; 823, guide portion; 824, water level detection device; 825, connecting pipeline; 830, buffer portion; 831, ventilation pipeline; 832, air vent.

[0051] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0053] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0054] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0055] Example 1

[0056] like Figures 1 to 3 As shown, the washing machine described in this embodiment includes:

[0057] Water container 100;

[0058] The filter device 600 is connected to the water storage drum 100, receives water in the water storage drum 100 for filtering, and has a sewage outlet 6103 for discharging sewage;

[0059] The sewage temporary storage device 820 has an internal cavity connected to the sewage outlet 6103 of the filter device 600;

[0060] The recovery device 500 is in communication with the internal cavity of the sewage temporary storage device 820. The sewage discharged from the filtering device 600 is collected in the recovery device 500 through the sewage temporary storage device 820.

[0061] The suction device performs a suction action to drive the sewage in the filtering device 600 into the sewage temporary storage device 820 under the action of pressure difference.

[0062] In this embodiment, the washing machine is provided with a circulating filter pipe, each end of which is connected to the water drum 100. A filter device 600 is disposed within the circulating filter pipe. A circulating pump 400 is also provided within the circulating filter pipe. The circulating pump 400 continuously circulates water from the water drum 100 through the circulating filter pipe, removing lint and other impurities as the water passes through the filter device 600. This reduces the lint content in the water and improves the washing effect.

[0063] The filter device 600 has a self-cleaning function and is provided with a sewage outlet 6103. After filtration, the filtered impurities remaining in the filter device 600 can be discharged from the sewage outlet 6103 along with the water flow, without the user having to remove the filter device 600 for manual cleaning, making it more convenient to use. The recovery device 500 is connected to the sewage outlet 6103 of the filter device 600 via the sewage temporary storage device 820. After the sewage carrying the filtered impurities is discharged from the sewage outlet 6103, it can eventually enter the recovery device 500 and be collected, instead of being merged into the drainage water flow and discharged from the washing machine. The above method prevents the microplastics in the filtered impurities from being discharged with the water flow and entering the ecological cycle, thereby causing harm to the ecological environment and human health.

[0064] Due to the limitation of the internal space of the washing machine, the distance between the filter device 600 and the recovery device 500 may be relatively far, resulting in a long path for the sewage to be discharged into the recovery device 500. Figure 1 As shown, in this embodiment, the recovery device 500 and the filter device 600 are respectively arranged on the left and right sides of the top of the washing machine housing 10. Without external force, it is difficult for the sewage in the filter device 600 to be completely discharged into the recovery device 500. If the recovery device 500 is arranged at a height higher than the sewage outlet 6103 of the filter device 600, the sewage may even be unable to be discharged.

[0065] A conventional water pump is generally used in a washing machine to provide power to drive the water flow. However, since the filter device 600 discharges sewage carrying filtered impurities into the recovery device 500, the conventional pumping method may cause blockage when the sewage passes through the water pump body, thereby causing the washing machine to malfunction.

[0066] To address the issue of wastewater being discharged from the filter device 600 into the recovery device 500, the washing machine of this embodiment is equipped with a suction device. This suction device performs a suction action, drawing air outside the wastewater outlet 6103 to generate negative pressure, driving the wastewater out. Furthermore, a temporary wastewater storage device 820 capable of accommodating a certain amount of wastewater is provided between the filter device 600 and the recovery device 500. This prevents wastewater rapidly flowing out of the filter device 600 from being directly drawn into the suction device.

[0067] In this embodiment, an air pump 810 is used as a suction device. Specifically, when the filter device 600 needs to discharge sewage, the air pump 810 is controlled to perform a suction operation. The air in the sewage temporary storage device 820 is extracted by the air pump 810, creating a negative pressure environment. Under the action of the pressure difference, the sewage in the filter device 600 is discharged through the sewage outlet 6103 and enters the sewage temporary storage device 820. The air pump 810 is then turned off, and the suction effect generated by the air pump 810 disappears. The sewage in the sewage temporary storage device 820 can be further discharged into the recovery device 500 for collection.

[0068] In this embodiment, the air pump 810 performs a suction action to discharge all the sewage retained in the filter device 600 into the sewage temporary storage device 820.

[0069] The washing machine also includes a detection device for detecting the drainage of sewage from the filter device 600. The air pump 810 stops pumping when the detection device detects that the sewage in the filter device 600 has been completely drained. The air pump 810 can completely remove the sewage from the filter device 600 with a single pumping action, achieving efficient sewage drainage.

[0070] Specifically, the detection device can be a water level gauge provided on the filter device 600, which determines whether the sewage is completely discharged by detecting the water level in the filter device 600. When the water level in the filter device 600 fed back by the water level gauge is zero, the air pump 810 is controlled to be turned off to stop the suction action.

[0071] Alternatively, the detection device is a flow meter arranged on the sewage pipe 240. During the suction action of the air pump 810, if the flow meter detects that the flow in the sewage pipe 240 is continuously zero, it is determined that the sewage in the filter device 600 has been completely discharged, and the air pump 810 is controlled to be closed to stop the suction action.

[0072] Alternatively, the detection device may capture images of the interior of the filter device 600 and determine whether the sewage is completely discharged based on the captured images. When the washing machine determines that the sewage is completely discharged based on the captured images of the interior of the filter device 600, the air pump 810 is controlled to be turned off to stop the suction action.

[0073] In a further embodiment of the present invention, the amount of sewage that can be accommodated between the sewage outlet 6103 of the filter device 600 and the sewage inlet of the recovery device 500 is greater than or equal to the maximum amount of sewage that the filter device 600 can accommodate. Specifically, the sewage outlet 6103 of the filter device 600 is connected to the sewage temporary storage device 820 via the sewage discharge pipe 240, and the sewage temporary storage device 820 is connected to the recovery device 500 via the connecting pipe 825. The total volume of the sewage discharge pipe 240, the connecting pipe 825, and the sewage temporary storage device 820 is no less than the volume of the filter device 600.

[0074] The above structure ensures that when the air pump 810 performs a suction action to completely discharge the sewage in the filter device 600, the discharged sewage will not overflow from the sewage temporary storage device 820 and flow into the air pump 810 before entering the recovery device 500, thereby preventing the sewage from entering the air pump 810.

[0075] In a preferred embodiment of this invention, the volume of the temporary sewage storage device 820 is set to be larger than the volume of the filter device 600, or at least larger than the maximum amount of sewage that can be stored in the filter device 600. In this way, when the sewage in the filter device 600 is completely discharged at once, the temporary sewage storage device 820 will not be filled up. This further prevents the sewage from overflowing the temporary sewage storage device 820 and entering the air pump 810 when the filter device 600 discharges the sewage into the temporary sewage storage device 820, thereby protecting the air pump 810.

[0076] In a further embodiment of the present invention, a first vent is provided on the sewage temporary storage device 820, which is in communication with the air pump 810. The first vent is preferably provided on the top wall of the sewage temporary storage device 820, so as to maximize the capacity of the sewage temporary storage device 820 and ensure that the sewage temporary storage device 820 does not overflow before being filled with sewage.

[0077] In this embodiment, the water outlet of the sewage temporary storage device 820 is higher than the sewage inlet of the recovery device 500. After the air pump 810 is turned off and stops pumping air, the sewage in the sewage temporary storage device 820 can be discharged into the recovery device 500 under the action of gravity.

[0078] In a preferred embodiment of this embodiment, a vent hole 821 is provided on the top wall of the temporary sewage storage device 820, connecting the internal chamber of the temporary sewage storage device 820 with the external space. When the air pump 810 is turned on, the sewage in the filter device 600 enters the temporary sewage storage device 820 due to the pressure differential. When the air pump 810 is turned off, external air enters the internal chamber of the temporary sewage storage device 820 through the vent hole 821, driving the sewage therein into the recovery device 500.

[0079] In the above solution, the opening area of ​​the air vent 821 is relatively small. When the air pump 810 is turned on, the air entering the sewage temporary storage device 820 through the air vent 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 extracted. Due to the provision of the air vent 821, the interior of the sewage temporary storage device 820 can quickly return to a pressure close to atmospheric pressure, and the entry of air pushes the sewage out into the recovery device 500. By providing the air vent 821 in the sewage temporary storage device 820, the situation where the air pressure in the recovery device 500 is excessively high and the sewage cannot flow into the recovery device 500 after the air pump 810 stops working is avoided.

[0080] In this embodiment, the air pump 810 can be a bidirectional pump that can perform both a suction action to draw air and a pumping action to introduce air into the temporary sewage storage device 820. After the sewage in the filter device 600 is discharged into the temporary sewage storage device 820, the air pump 810 is first turned off to stop suctioning air, and then turned on again to pump air into the temporary sewage storage device 820, thereby driving the sewage therein into the recovery device 500.

[0081] In another embodiment, air pump 810 is a suction pump with only a suction function. The washing machine further includes an aeration device (not shown), such as an air pump, connected to the temporary sewage storage device. After the sewage in the filter device 600 is discharged into the temporary sewage storage device 820, the air pump 810 is turned off and the aeration device is turned on to introduce air into the temporary sewage storage device 820, thereby driving the sewage therein into the recovery device 500.

[0082] In the above two solutions, since the sewage in the sewage temporary storage device 820 is mainly squeezed into the recovery device 500 by air, the outlet of the sewage temporary storage device 820 can also be slightly lower than the sewage inlet of the recovery device 500.

[0083] In a further embodiment of this embodiment, the sewage outlet 6103 of the filter device 600 is connected to the sewage temporary storage device 820 via a sewage pipe 240. A sewage control valve 241 is provided on the sewage pipe 240, which can be opened / closed. When the circulating pump 400 drives the water in the water tank 100 to circulate and filter, the sewage control valve 241 is closed, and the sewage pipe 240 is disconnected. When it is necessary to drain the sewage from the filter device 600, the washing machine performs the following steps in sequence:

[0084] S1. Control the air pump 810 to perform a suction action, and the air in the sewage temporary storage device 820 is extracted;

[0085] S2. Open the sewage control valve 241 to connect the sewage pipe 240. The sewage in the filter device 600 is discharged into the sewage temporary storage device 820 under the action of the pressure difference.

[0086] S3. Turn off the air pump 810, and the sewage in the sewage temporary storage device 820 is discharged into the recovery device 500.

[0087] In the above solution, the sewage control valve 241 remains closed during the initial suction phase of the air pump 810. This disconnects the filter device 600 from the temporary sewage storage device 820, allowing a more pronounced negative pressure to form within the temporary sewage storage device 820 more quickly. Subsequently, when the sewage control valve 241 is opened, the sewage in the filter device 600 is subjected to a greater driving force, allowing it to be efficiently and fully discharged into the temporary sewage storage device 820.

[0088] In a further embodiment of this embodiment, a buffer portion 830 is provided between the air pump 810 and the temporary sewage storage device 820. The buffer portion 830 has a buffer chamber therein. The buffer chamber is connected to the first vent on the temporary sewage storage device 820. The air pump 810 is connected to the buffer chamber, and air in the temporary sewage storage device 820 is sucked through the buffer portion 830.

[0089] Preferably, a second vent connected to the air pump 810 is provided on the top wall of the buffer portion 830 .

[0090] In the above solution, buffer section 830 is disposed between temporary sewage storage device 820 and air pump 810 and can accommodate a certain amount of sewage. If sewage from temporary sewage storage device 820, discharged during the previous sewage discharge by filter device 600, is not completely drained, causing sewage to overflow from temporary sewage storage device 820, the overflowed sewage can be stored in the buffer chamber of buffer section 830 rather than directly entering air pump 810. This provides further protection for air pump 810 and enhances safety and reliability.

[0091] In this embodiment, the air pump 810 is disposed above the buffer portion 830. The second vent of the buffer portion 830 is connected to a suction line 811, which extends vertically upward and connects to the air inlet of the air pump 810. The buffer portion 830 is disposed above the temporary sewage storage device 820. The first vent of the temporary sewage storage device 820 is connected to a ventilation line 831, which extends vertically upward and communicates with the buffer chamber of the buffer portion 830.

[0092] Through the above structure, the sewage enters the upper buffer part 830 and the air pump 810 from the sewage temporary storage device 820 under the suction action of the air pump 810, and the suction force required is greater, which further prevents the air pump 810 from entering with water.

[0093] In a further embodiment of the present invention, a water level detection device 824 is provided in the internal cavity of the sewage temporary storage device 820. When the amount of sewage in the sewage temporary storage device 820 reaches a preset water level, the water level detection device 824 issues an early warning signal.

[0094] like Figure 3 As shown, the water level detection device 824 is a probe installed in the top area of ​​the sewage temporary storage device 820. When the sewage in the sewage temporary storage device 820 reaches the height of the probe, an early warning signal is issued. It is understood that other forms of water level detection devices 824, such as floats, can also be used in this embodiment.

[0095] Although the solution of this embodiment ensures that the sewage temporary storage device 820 can receive all the sewage discharged from the filter device 600 without overflowing by setting the volume of the sewage temporary storage device 820, it is still possible that the sewage temporary storage device 820 will be filled before the sewage in the filter device 600 is completely discharged due to unexpected circumstances such as the sewage received by the sewage temporary storage device 820 was not completely discharged. In this case, if the sewage in the filter device 600 continues to be discharged, the sewage temporary storage device 820 will overflow.

[0096] In this embodiment, a water level detection device 824 is provided to issue a warning signal when the sewage temporary storage device 820 is about to be filled. Upon receiving the warning signal, the washing machine controls the air pump 810 to shut down, stopping the suction of air from the sewage temporary storage device 820, thereby suspending the process of sewage from the filter device 600 into the sewage temporary storage device 820. This further ensures that the sewage temporary storage device 820 will not overflow, thereby effectively protecting the air pump 810.

[0097] In a further solution of this embodiment, the recovery device 500 specifically includes:

[0098] The housing 510 has a recovery chamber therein;

[0099] The filter assembly 520 is disposed in the recovery chamber, dividing the recovery chamber into a first chamber 531 and a second chamber 532 .

[0100] The sewage outlet 6103 of the filter device 600 is connected to the first chamber 531 . Sewage carrying filtered impurities enters the first chamber 531 , is filtered by the filter assembly 520 , and then enters the second chamber 532 . The filtered impurities are collected in the first chamber 531 .

[0101] In the above solution, after the recovery device 500 collects the sewage discharged by the filter device 600, it can also filter the sewage through the internal filter 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 where the filtered impurities are mixed with the sewage and cannot be effectively treated.

[0102] Specifically, the filter assembly 520 can be a frame horizontally arranged at a certain height within the recovery chamber, and a filter screen laid on the frame. The upper side of the filter assembly 520 forms a first chamber 531, and the lower side forms a second chamber 532. After the sewage carrying filtered impurities enters the first chamber 531, the water can pass through the filter assembly 520 and enter the second chamber 532. The filtered impurities are blocked by the filter screen and remain on the upper surface of the filter assembly 520.

[0103] Among them, the filter screen of the filter component 520 can filter microplastics in sewage and prevent microplastics from mixing into the water body.

[0104] In this embodiment, the recovery device 500 is arranged on the housing 10 of the washing machine in an insertable / removable manner, and the user can remove the recovery device 500 from the housing 10 for cleaning.

[0105] Specifically, the housing 510 of the recovery device 500 is insertably and removably mounted on the housing 10. The upper side of the housing 510 is open. When the user removes the housing 510 from the housing 10, the user can clean filtered impurities adhering to the upper surface of the filter assembly 520 through the upper opening. The filter assembly 520 is preferably detachably connected to the housing 510, allowing the user to remove and clean the filter assembly 520 from the interior of the housing 510 for greater convenience.

[0106] In a preferred embodiment of this embodiment, a water outlet is provided on the second chamber 532 for discharging filtered clean water. This outlet allows clean water entering the second chamber 532 to be promptly discharged from the recovery device 500, preventing overflow from the recovery device 500 when a large amount of wastewater is discharged from the filtration device 600. Otherwise, the capacity of the second chamber 532 would need to be increased, which in turn would require increasing the size of the recovery device 500. This would result in the recovery device 500 occupying a larger space within the washing machine, hindering the overall miniaturization of the washing machine.

[0107] On the other hand, the water in the second chamber 532 can be automatically drained from the water outlet. When the user cleans the recovery device 500, they only need to clean the filtered impurities on the filter assembly 520 without having to manually pour out the clean water in the second chamber 532. When the filter assembly 520 is detachably mounted in the housing 510, the user does not even need to completely remove the housing 510 from the washing machine body 10. They only need to remove the filter assembly 520 for cleaning, which is more convenient.

[0108] Preferably, the water outlet of the second chamber 532 is connected to the water drum 100 via a pipe, allowing the clean water filtered by the filter assembly 520 to be passed into the water drum 100 for reuse, thereby saving water in the washing machine. Alternatively, the water outlet of the second chamber 532 can be connected to the outside of the washing machine via a pipe, allowing the filtered water, free of filtered impurities, to be directly discharged from the washing machine, preventing the problem of microplastics entering the ecological cycle.

[0109] In this embodiment, the filtering device 600 specifically includes:

[0110] The filter chamber 610 is provided with a water inlet 6101, a filtered water outlet 6102 and a sewage outlet 6103. The water inlet 6101 and the filtered water outlet 6102 are connected to the circulating filter pipeline;

[0111] The filter mechanism 620 is rotatably disposed in the filter cavity 610;

[0112] The driving mechanism 660 drives the filtering mechanism 620 to rotate in the filtering cavity 610 .

[0113] The filter mechanism 620 includes a filter screen holder and a filter screen covering the surface of the filter screen holder, which divides the interior of the filter chamber 610 into an outer chamber and an inner chamber. Water from the water storage cylinder 100 enters the outer chamber of the filter chamber 610 through the water inlet 6101. Filter impurities in the water are blocked by the filter screen and adhere to the outer surface of the filter mechanism 620. Clean water without filtered impurities enters the inner chamber, flows out through the water outlet connector 621 connected to the inner chamber, and finally flows out of the filter chamber 610 through the filtered water outlet 6102. By designing the pore size of the filter screen, the filter mechanism 620 can not only filter large-sized lint in the water, but also filter microplastics in the water, thereby significantly reducing the content of microplastics in the washing machine's drainage.

[0114] When the filter device 600 needs to be cleaned, the drive mechanism 660, such as a motor, drives the filter mechanism 620 to rotate within the filter chamber 610, stirring the residual water in the filter chamber 610. Centrifugal force and the agitated water flow cause the filtered impurities attached to the surface of the filter mechanism 620 to be stripped from the filter mechanism 620 and dissolved into the water within the filter chamber 610. Finally, the air pump 810 is used to discharge the sewage from the sewage outlet 6103, into the sewage temporary storage device 820, and ultimately collected by the recovery device 500. The volume of the sewage temporary storage device 820 is specifically larger than that of the filter chamber 610.

[0115] In this embodiment, the self-cleaning operation of rotating the filter mechanism 620 by activating the driving mechanism 660 and / or the drainage operation of discharging the wastewater from the filter device 600 by activating the air pump 810 are performed at least once during a complete washing cycle of the washing machine. During the drainage operation, the filter mechanism 620 can remain stationary or be driven to rotate by the driving mechanism 660.

[0116] Furthermore, cleaning particles 680 are also provided in the filter cavity 610 of the filter device 600, which are used to clean the inner wall of the filter cavity 610 and the outer wall of the filter mechanism 620 by friction and collision with the water flow. During the circulating filtration process, the cleaning particles 680 continuously rub the inner wall of the filter cavity 610 and the outer wall of the filter mechanism 620 with the flowing water, causing the attached filter impurities to fall off, thereby preventing the deposition of filter impurities and avoiding the filter mechanism 620 from being covered by filter impurities, which affects the filtration efficiency. When the filter mechanism 620 rotates for self-cleaning, the cleaning particles 680 move in the filter cavity 610 with the action of the agitated water flow, and rub against the inner wall of the filter cavity 610 and the outer wall of the filter mechanism 620, thereby improving the efficiency of removing filter impurities and achieving a better self-cleaning effect of the filter device 600.

[0117] A baffle 690 is also provided within the filter chamber 610, dividing the interior of the filter chamber 610 into a first space on the left and a second space on the right. The cleaning particles 680 and the main body of the filter mechanism 620 are both located within the first space. The water inlet 6101 is connected to the first space, and the filtered water outlet 6102 and the sewage outlet 6103 are connected to the second space. The baffle 690 is provided with a water hole connecting the first and second spaces. The sewage within the filter chamber 610 can be discharged from the sewage outlet 6103 through the baffle 690. The cleaning particles 680 cannot pass through the water hole and are therefore blocked on the left by the baffle 690. This prevents the cleaning particles 680 from being discharged with the sewage through the sewage outlet 6103 or from accumulating at the sewage outlet 6103 and causing blockage.

[0118] The circulating filter pipeline of the washing machine in this embodiment specifically includes:

[0119] The water storage drum drain pipe 260 connects the water storage drum 100 and the water inlet end of the circulation pump 400;

[0120] The drainage pipe 210 has one end connected to the water outlet of the circulation pump 400 and the other end connected to the switching device 270;

[0121] The circulation line 220 has one end connected to the switching device 270 and the other end connected to the water inlet 6101 of the filtering device 600;

[0122] One end of the return water pipe 230 is connected to the filtered water outlet 6102 of the filter device 600 , and the other end is connected to the water storage drum 100 to transport the filtered water to the water storage drum 100 .

[0123] Switching device 270 is also connected to external drainage pipe 250, which drains water to the outside of the washing machine. Switching device 270 can control whether either circulation pipe 220 or external drainage pipe 250 is connected to drainage pipe 210. In this way, a single circulation pump 400 can provide driving force for both circulation, filtration, and drainage of the washing machine. This is achieved simply by controlling the direction of the switching device 270.

[0124] The water outlet end of the return pipe 230 is connected to the window pad 110 at the mouth of the water storage cylinder 100. The water filtered by the filter device 600 enters the window pad 110 and returns to the water storage cylinder 100.

[0125] In the washing machine of this embodiment, the recovery device 500 can collect the sewage discharged from the filtering device 600 to prevent the sewage carrying filtered impurities from being directly discharged from the washing machine, causing microplastics in the filtered impurities to enter the ecological cycle, and causing an impact on the ecological environment and human health. A sewage temporary storage device 820 is set between the filtering device 600 and the recovery device 500, and an air pump 810 is set to suck the air in the sewage temporary storage device 820, which can drive the sewage in the filtering device 600 to be discharged by generating a pressure difference. The discharged sewage enters the recovery device 500 through the sewage temporary storage device 820, avoiding the situation where the suction force of the air pump 810 is too large, causing the sewage to be directly sucked into the air pump 810, and avoiding the impact of water in the air pump 810 on the working performance.

[0126] Example 2

[0127] like Figures 3 to 7 As shown, this embodiment is a further limitation of the above-mentioned embodiment 1, and a blocking member 540 that conducts one-way from outside to inside is provided at the sewage inlet 550 of the recovery device 500.

[0128] When the air pump 810 is turned on, the sealing member 540 can block the sewage inlet 550 of the recovery device 500, preventing the air inside the recovery device 500 from being drawn out through the sewage inlet 550. Consequently, the space between the sewage outlet 6103 and the recovery device 500 is relatively independent. This allows the suction of the air pump 810 to quickly create a negative pressure environment inside the sewage temporary storage device 820, improving the efficiency of sewage discharge. After the air pump 810 is turned off, the suction effect disappears, and the sewage flows out of the sewage temporary storage device 820 due to gravity or the increased air pressure generated by the air entering the sewage temporary storage device 820. The sealing member 540, under the action of water pressure, can open the sewage inlet 550, allowing the sewage to enter the recovery device 500 and be collected.

[0129] Specifically, the blocking member 540 includes:

[0130] The base 541 is mounted on the sewage inlet 550 of the recovery device 500;

[0131] The opening portion 542 is movable relative to the base 541 to open / close the space outside and inside the recovery device 500 .

[0132] Furthermore, a sewage inlet 550 is provided on the housing 510 of the recovery device 500. The outer periphery of the sewage inlet 550 extends a certain length from the inner wall of the housing 510 of the recovery device 500 into the interior of the recovery device 500 to form a tubular portion 551. The base 541 is mounted at the extended end of the tubular portion 551. The opening portion 542 is movable relative to the extended end of the tubular portion 551 to open and close the opening at the extended end of the tubular portion 551.

[0133] Specifically, the base 541 is fitted over the extended end of the tubular portion 551, and the opening portion 542 covers the opening of the tubular portion 551 from the outside to seal it. The opening portion 542 flips away from the tubular portion 551 to open the opening. The sealing member 540 has a simple structure, and the opening portion 542 abuts against the right end surface of the tubular portion 551, preventing it from flipping inward, thereby ensuring that the sewage inlet 550 is unidirectional and flows from outside to inside.

[0134] In one solution of this embodiment, the opening portion 542 is made of a flexible material that can undergo elastic deformation, such as rubber. When the air pump 810 is turned on, the portion of the opening 542 covering the opening is deformed to bulge toward the inside of the tubular portion 551, thereby sealing the opening. The opening portion 542 can wrap the angle between the inner wall of the tubular portion 551 and the right end face of the tubular portion 551 to a certain extent, thereby increasing the contact area between the opening portion 542 and the opening of the tubular portion 551. At the same time, the surface of the opening portion 542 facing the tubular portion 551 forms a convex surface, and the surface area is increased, which also increases the force area of ​​the opening portion 542 subjected to the negative pressure adsorption force, thereby achieving a better sealing effect on the sewage inlet 550 through the sealing member 540, which is conducive to the rapid formation of a negative pressure environment.

[0135] Furthermore, the opening portion 542 and the base 541 are integrally formed, that is, the blocking member 540 is made of a flexible material as a whole. No additional connecting structure is required between the base 541 and the opening portion 542, so that the opening portion 542 and the base 541 can be relatively movable, and the opening at the right end of the tubular portion 551 can be opened / closed by the movement of the opening portion 542.

[0136] In another embodiment of the present invention, the opening portion of the blocking member is made of a hard material, and the surface of the opening portion facing the opening of the tubular portion is a convex surface that protrudes into the interior of the tubular portion. Specifically, the opening of the tubular portion is circular, the opening portion is a disc-shaped structure, and the surface of the opening portion facing the opening of the tubular portion is a centrally convex arc surface.

[0137] When the opening portion seals the opening of the tubular portion, the curved surface of the opening portion allows it to partially extend into the opening. Furthermore, the surface in contact with the opening of the tubular portion is inclined relative to the end face of the tubular portion, enabling it to more securely seal the opening and achieve a better sealing effect. Furthermore, the curved surface of the opening portion increases its surface area, thereby increasing the area of ​​the opening portion exposed to the suction force of the air pump, further enhancing the sealing performance and thereby better creating a negative pressure environment between the sewage outlet of the filter device and the recovery device.

[0138] In a further improvement, the opening portion of the blocking member is separated from the base body and the two are connected in a relatively movable manner. Specifically, the opening portion and the base body are rotatably connected, and the opening portion opens / closes the opening of the tubular portion through a turning motion.

[0139] Alternatively, the opening portion and the base may be integrally formed of plastic, wherein both the opening portion and the base are rigid and do not deform significantly. The opening portion and the base are connected by a thin connecting piece, which is thin enough to deform under relatively low force, thereby allowing relative movement between the opening portion and the base.

[0140] In a further embodiment of the present invention, the outer periphery of the sewage inlet 550 extends a certain length from the outer wall of the housing 510 of the recovery device 500 toward the outside of the recovery device 500 to form a connecting portion 552. The connecting portion 552 is used to connect to a pipeline and communicate through the pipeline to the sewage temporary storage device 820. The end of the pipeline can be sleeved on the connecting portion 552, making installation more convenient.

[0141] In this embodiment, a one-way sealing member 540 is provided at the sewage inlet 550 of the recovery device 500. This sealing member 540 seals the sewage inlet 550 of the recovery device 500 when the air pump 810 draws air, thereby more quickly creating a negative pressure environment and increasing the pressure differential that can be formed at the sewage outlet 6103, thereby improving the efficiency of sewage discharge from the filter device 600. After the air pump 810 is turned off, the sealing member 540 automatically opens the sewage inlet 550 under the impact of the water flow, allowing the sewage to smoothly enter the recovery device 500 for collection.

[0142] Example 3

[0143] like Figures 8 to 11 As shown, this embodiment is a further limitation of the above-mentioned embodiment one or two, and the washing machine also includes an isolation mechanism arranged between the sewage temporary storage device 820 and the air pump 810. The isolation mechanism can gradually disconnect the connection between the air pump 810 and the sewage temporary storage device 820 as the sewage is discharged, thereby further preventing the sewage temporary storage device 820 from overflowing.

[0144] In a specific solution of this embodiment, the isolation mechanism includes a floating member, and a vent hole 832 is provided on the communication path between the air pump 810 and the sewage temporary storage device 820. During the sewage discharge process, the floating member rises with the water surface to below the vent hole 832 to block the vent hole 832.

[0145] In this embodiment, the floating member is a float 822 , and the diameter of the float 822 is larger than the diameter of the vent hole 832 .

[0146] In a further embodiment of this embodiment, a float 822 is disposed within the temporary sewage storage device 820, and a vent hole 832 is formed at the connection between the vent pipe 831 and the temporary sewage storage device 820. Preferably, the isolation mechanism further includes a guide portion 823 extending from the bottom of the temporary sewage storage device 820 toward the vent hole 832. The guide portion 823 has a hollow passage, and the float 822 is disposed in the hollow passage.

[0147] like Figure 8 and Figure 9 As shown, 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 part 823. During the process of sewage being discharged into the sewage temporary storage device 820, the water level in the sewage temporary storage device 820 gradually rises. A through hole is provided on the side wall of the guide part 823 for connecting the hollow channel with the external space of the guide part 823. The water level inside the guide part 823 rises synchronously, and the float 822 always floats at the water level and gradually rises as the water level rises. Figure 10 and Figure 11 As shown, when the sewage temporary storage device 820 is filled with water, the float 822 rises with the water surface to the top of the sewage temporary storage device 820 and blocks the vent 832 from below, so that the sewage cannot overflow further upward through the vent 832, thereby ensuring that the sewage will not overflow the sewage temporary storage device 820.

[0148] In the above solution, vent hole 832 is blocked by float 822 disposed within temporary sewage storage device 820. This allows vent hole 832 to be blocked only when temporary sewage storage device 820 is full. This prevents overflow of sewage, allowing filter device 600 to discharge a larger amount of sewage at once, thereby improving sewage discharge efficiency. A guide portion 823 is provided to guide the movement of float 822, allowing it to reciprocate only within guide portion 823. This prevents the movement of float 822 from deviating and potentially failing to block vent hole 832.

[0149] In this embodiment, the guide portion 823 is a circular tubular structure, and the inner diameter of the guide portion 823 is larger than the outer diameter of the float 822. This creates a clearance fit between the float 822 and the guide portion 823, reducing or even eliminating frictional resistance when the float 822 reciprocates within the guide portion 823, thereby preventing the float 822 from becoming stuck within the guide portion 823 and being unable to rise with the water surface.

[0150] In a preferred solution of this embodiment, the guide portion 823 is vertically extended inside the sewage temporary storage device 820 , which is more conducive to the float 822 rising unhindered as the water level rises to block the vent hole 832 .

[0151] In this embodiment, by setting a float 822 and a guide part 823 in the sewage temporary storage device 820, when the sewage temporary storage device 820 is filled with sewage, the upper air vent 832 can be blocked by the float 822 to prevent sewage from overflowing from the air vent 832, further avoiding the problem of water overflow in the sewage temporary storage device 820.

[0152] Example 4

[0153] The difference between this embodiment and the third embodiment is that the isolation mechanism composed of the float and the guide portion is arranged inside the buffer portion.

[0154] Specifically, a vent hole is formed at the connection between the suction pipeline and the buffer part. A guide part is provided in the buffer part and extends vertically upward from the bottom to the vent hole. A through hole is provided on the side wall of the guide part, and a float is provided inside the guide part.

[0155] In this embodiment, the volume of the temporary sewage storage device is set larger than that of the filtration device. Under normal operating conditions, the sewage will generally not completely fill the temporary sewage storage device. However, in some abnormal circumstances, such as when there is residual sewage in the temporary sewage storage device from a previous drain, the temporary sewage storage device may overflow. In this case, the overflowing sewage will flow upward along the ventilation pipe into the buffer unit, gradually accumulating within the buffer chamber and not being directly drawn into the air pump.

[0156] As sewage enters the buffer, the water level gradually rises, and the float rises within the guide section, moving toward the vent at the top. When the buffer is also filled with sewage, the float rises to the top of the guide section, sealing the vent at the bottom of the suction line and preventing sewage from overflowing from the buffer and being sucked into the air pump.

[0157] Example 5

[0158] like Figure 12 As shown, the difference between this embodiment and the above-mentioned embodiment three is that: the sewage temporary storage device 820 and the buffer part 830 are both provided with an isolation mechanism consisting 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 air vents 832 that can be blocked by the corresponding floats 822.

[0159] Specifically, the lower end of the ventilation pipe 831 is connected to the top wall of the sewage temporary storage device 820 to form a ventilation hole 832. The lower end of the suction pipe 811 is connected to the top wall of the buffer part 830 to form another ventilation hole 832.

[0160] Under normal circumstances, when the filter device 600 discharges sewage, the float 822 in the sewage temporary storage device 820 rises with the water level until it reaches the top of the sewage temporary storage device 820, where it blocks the vent 832 and prevents sewage from overflowing from the sewage temporary storage device 820. However, if the float 822 in the sewage temporary storage device 820 accidentally gets stuck and cannot move, the vent line 831 will remain connected to the sewage temporary storage device 820. If the sewage temporary storage device 820 overflows, the overflowing sewage will flow upward along the vent line 831 and into the buffer portion 830.

[0161] In this embodiment, a float 822 is also installed within the buffer 830. As sewage continues to flow into the buffer 830, the float 822 gradually rises with the water level. When the buffer 830 is also filled with sewage, the float 822 blocks the vent 832 on the top wall of the buffer 830, thereby sealing the lower end of the suction pipe 811 and preventing sewage from overflowing from the buffer 830 into the air pump 810.

[0162] In this embodiment, floats 822 are provided in both the temporary sewage storage device 820 and the buffer unit 830, providing dual protection. Even if float 822 in the temporary sewage storage device 820 fails, causing sewage to overflow, float 822 in the buffer unit 830 can still block the vent 832 at the lower end of the suction pipe 811 when the buffer unit 830 is filled with sewage, thereby preventing sewage from further overflowing the buffer unit 830 and entering the air pump 810, providing greater safety and reliability.

[0163] Example 6

[0164] like Figure 2 and Figure 3 As shown, this embodiment is a further limitation of the above-mentioned embodiment 1, wherein the washing machine further includes a detergent dispensing device having a water inlet box 300 connected to the water drum 100. The water outlet of the second chamber 532 of the recovery device 500 is connected to the water inlet box 300, and the filtered clean water is passed into the water inlet box 300 and then into the water drum 100 through the water inlet box 300.

[0165] In the above solution, after the recovery device 500 filters the collected sewage, the filtered clean water returns to the water storage drum 100 through the water inlet box 300 for reuse, which can flush the detergent that may exist inside the water inlet box 300 and improve the utilization rate of the detergent.

[0166] In this embodiment, the water inlet box 300 can be connected to the water outlet of the second chamber 532 of the recovery device 500 through a pipe. After the filtered clean water is discharged from the water outlet, it enters the water inlet box 300 through the pipe, and then enters the water holding drum 100 through the pipe connecting the water inlet box 300 and the water holding drum 100 to participate in the washing process.

[0167] In a preferred solution of this embodiment, the recovery device 500 is arranged as a whole inside the water inlet box 300. After filtering the sewage discharged by the filtering device 600, the clean water flows out through the water outlet on the second chamber 532 and directly enters the water inlet box 300, and then enters the water cylinder 100 along the pipe connecting the water inlet box 300 and the water cylinder 100.

[0168] Through the above structure, the space inside the water inlet box 300 can be fully utilized, and there is no need to set up a separate pipeline to connect the recovery device 500 and the water inlet box 300, making the internal structure of the washing machine more compact, thereby saving the installation space inside the washing machine.

[0169] Example 7

[0170] like Figure 2 and Figure 3 As shown, the difference between this embodiment and the above-mentioned embodiment 1 is that the volume of the sewage temporary storage device 820 is smaller than the volume of the filtering device 600, thereby reducing the overall volume of the sewage temporary storage device 820, which is beneficial to saving the installation space inside the washing machine.

[0171] In order to avoid overflow of the sewage temporary storage device 820, the washing machine of this embodiment controls the air pump 810 to perform suction actions multiple times during the sewage discharge process of the filter device 600, thereby completing the discharge of sewage in the filter device 600 in multiple times.

[0172] In one solution of this 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 each time the air pump 810 performs a suction action.

[0173] Specifically, a water level detection device 824 is provided 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 includes:

[0174] A1. Control the air pump 810 to perform the suction action;

[0175] A2: The water level in the sewage temporary storage device 820 rises to the first set water level, and the air pump 810 is turned off;

[0176] A3. The water level in the sewage temporary storage device 820 drops to the second set water level, and the process returns to step A1.

[0177] Furthermore, based on 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 that the air pump 810 performs the suction action. When the number of executions of step A1 reaches N1 times, the washing machine will no longer execute step A3 after completing step A2, and the sewage discharge process of the filter device 600 will end.

[0178] In another solution of this embodiment, the washing machine controls the sewage in the filter device 600 to be discharged in multiple times according to the duration of each suction action performed by the air pump 810.

[0179] Specifically, the control method of the washing machine includes:

[0180] B1, controlling the air pump 810 to perform the suction action;

[0181] B2: When the duration of the suction action of the air pump 810 reaches the first preset duration t1, the air pump 810 is turned off;

[0182] B3. The air pump 810 is turned off for a second preset time t2, and the process returns to step B1.

[0183] Furthermore, based on the maximum amount of sewage in the filtering device 600 and the amount of sewage that can be discharged by continuously performing the suction action for the first preset time t1, the washing machine is provided with a preset number N2 of times that the air pump 810 performs the suction action. When the number of executions of step B1 reaches N2 times, the washing machine will no longer execute step B3 after completing step B2, and the sewage discharge process of the filtering device 600 will end.

[0184] Through the above two solutions, the washing machine can control the amount of sewage discharged from the filter device 600 during each suction operation of the air pump 810, ensuring that the amount of sewage does not exceed the maximum capacity of the sewage temporary storage device 820. After completing one suction operation, the washing machine waits for the sewage received in the sewage temporary storage device 820 to be discharged into the recovery device 500 before performing the next suction operation. This ensures that sewage temporary storage device 820 will not overflow during the sewage discharge process of the filter device 600, preventing sewage from overflowing from the sewage temporary storage device 820 and being sucked into the air pump 810.

[0185] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A washing machine comprising: water container; The filtering device is connected to the water storage drum, receives water in the water storage drum for filtering, and has a sewage outlet for discharging sewage to the outside; It is characterized by further comprising: A sewage temporary storage device having an internal cavity connected to a sewage outlet of the filtering device; The recovery device is connected to the internal cavity of the sewage temporary storage device, and the sewage discharged by the filtering device is collected in the recovery device through the sewage temporary storage device; The suction device performs a suction action to drive the sewage in the filtering device into the sewage temporary storage device under the action of pressure difference.

2. The washing machine according to claim 1, wherein The sewage temporary storage device is provided with a first vent which is in communication with the suction device.

3. The washing machine according to claim 2, characterized in that The sewage temporary storage device is provided with an air vent for connecting the internal cavity of the sewage temporary storage device with the external space; The suction device performs the 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 external air enters the internal cavity of the sewage temporary storage device through the air vent, driving the sewage therein to be discharged into the recovery device.

4. The washing machine according to claim 2, wherein: A buffer portion is provided between the suction device and the sewage temporary storage device, and a buffer chamber is provided inside the buffer portion; the buffer chamber is communicated with the first vent on the sewage temporary storage device, and the suction device is communicated with the buffer chamber.

5. The washing machine according to claim 4, characterized in that The buffer portion is provided with a second vent which is in communication with the suction device.

6. The washing machine according to claim 5, characterized in that The second air vent of the buffer portion is connected to a suction pipeline, and the suction pipeline is extended to be connected to an air inlet end of a suction device.

7. The washing machine according to any one of claims 4 to 6, characterized in that: The first vent of the sewage temporary storage device is connected to a vent pipe, and the vent pipe extends to communicate with the buffer chamber of the buffer part.

8. The washing machine according to any one of claims 1 to 6, characterized in that: The water outlet of the sewage temporary storage device is higher than the sewage inlet of the recovery device, the suction device is closed, and the sewage in the sewage temporary storage device is discharged into the recovery device under the action of gravity; And / or, the washing machine also includes an aerating device for introducing gas into the sewage temporary storage device to drive the sewage therein to be discharged into the recovery device; or the suction device is also used to introduce gas into the sewage temporary storage device to drive the sewage therein to be discharged into the recovery device.

9. The washing machine according to any one of claims 1 to 6, characterized in that: The washing machine further comprises a detection device for detecting the discharge of sewage from the filter device; the suction device is used to stop the suction action when the detection device detects that the sewage in the filter device is completely discharged.

10. The washing machine according to claim 9, characterized in that The amount of sewage that can be accommodated between the sewage outlet of the filtering device and the sewage inlet of the recovery device is greater than or equal to the maximum amount of sewage that can be accommodated by the filtering device.

11. The washing machine according to claim 10, characterized in that The volume of the sewage temporary storage device is greater than or equal to the volume of the filtering device.

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