CN116219696A

CN116219696A - Washing machine and control method thereof

Info

Publication number: CN116219696A
Application number: CN202111477792.8A
Authority: CN
Inventors: 吕艳芬; 许升; 刘凯
Original assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2023-06-06

Abstract

The invention belongs to the technical field of washing machines, and discloses a washing machine and a control method thereof, wherein the washing machine comprises the following components: a water holding cylinder; the filtering device is communicated with the water containing cylinder, receives water in the water containing cylinder for filtering, and is provided with a sewage outlet for discharging sewage outwards; the suction device performs suction action and drives sewage in the filtering device to be discharged through the sewage outlet under the action of pressure difference; and the recovery device is used for collecting the sewage discharged by the filtering device. In the invention, the recovery device can collect the sewage discharged by the filter device, and the suction action of the suction device can form pressure difference inside and outside the sewage discharge outlet of the filter device, so that driving force is provided for the sewage to be discharged out of the filter device, and meanwhile, compared with the traditional pumping mode of the water pump, the problem that the water pump is blocked by the filtered impurities carried in the sewage is avoided.

Description

Washing machine and control method thereof

Technical Field

The invention belongs to the technical field of washing machines, and particularly relates to a washing machine and a control method thereof.

Background

In the process of washing clothes by the washing machine, the clothes can generate filings to fall off and be mixed into washing water due to friction between the clothes and friction between the clothes and the washing machine. If the lint in the washing water cannot be removed, the lint is likely to adhere to the surface of the laundry after the washing is completed, and the washing effect of the laundry is likely to be affected. For this, a filter for filtering lint is installed in the existing washing machine, and washing water is circulated through the filter during washing to remove lint from the washing water.

The filter of the existing washing machine is generally arranged inside the inner tub or the drain pump for filtering filings and impurities in the washing water. However, after the washing machine is used for a long time, the filter is filled with filings and other filtering impurities, so that the filtering effect of the filter is affected, the drain valve/drain pump is blocked, bacteria are very easy to breed, the bacteria are required to be cleaned in time, otherwise, the pollution of washing water is caused, secondary pollution is caused to clothes, and the health of a user is affected. Most washing machines require manual cleaning by removing the filter by a user, and are inconvenient to operate.

In view of the above problems, a filter device having a self-cleaning function has been proposed in the prior art, which can autonomously discharge the adhering filtered impurities. Most washing machines using the above-mentioned filtering device directly collect the sewage carrying the filtered impurities into the drainage water flow of the washing machine to be discharged after the self-cleaning of the filtering device is completed, and the following problems are brought.

On the one hand, because the inner space of the washing machine is compact, the sewage discharging path of the filtering device for discharging sewage outwards is long, and a certain height difference possibly exists, so that the sewage in the filtering device is difficult to sufficiently discharge under the condition of not using driving force, the sewage in the filtering device is left, and the problems of bacterial breeding and the like still can be caused after long-term use are caused.

On the other hand, in recent years, the concept of microplastic has been proposed and increasingly paid attention to in the field of environmental protection. Microplastic generally refers to plastic fragments and particles with diameters less than 5 mm, which are mixed into natural water environment, and organic pollutants in water are easily adsorbed due to the high specific surface area, so that organic pollution spheres are formed. The microplastic in the water can be easily eaten by low-end food chain organisms such as mussels, zooplankton and the like, and the microplastic can be continuously accumulated in the upper-layer organisms after the low-end food chain organisms are prey on by the upper-layer organisms because the microplastic cannot be digested. As the top organisms of the food chain, human food sources include the organisms that accumulate micro-plastics in the human body, which in turn can cause accumulation of micro-plastics in the human body, possibly affecting human health.

It has been found that an important source of microplastic is wastewater discharged from domestic washing machines. The method is characterized in that the clothes are washed by the washing machine, and the shed clothes are discharged along with the drainage water flow of the washing machine along with the popularization of chemical fiber fabrics, so that the shed clothes become micro-plastics mixed into natural water environment. Meanwhile, the micro plastic can be an industrial product made of plastic materials, and the outer barrel, the drain pipe and other structures in the washing machine are generally made of plastic, so that falling plastic fragments caused by aging and other reasons are unavoidable after long-term use. Therefore, how to reduce the micro-plastic content in the drainage of the washing machine is a problem to be solved in the environment protection field. In the prior art, the washing machine with the self-cleaning function of the filtering device has the problem that the content of the micro-plastics in the drainage of the washing machine is too high because the filtered impurities containing the micro-plastics are directly converged into the drainage flow of the washing machine and discharged.

In view of this, the present invention has been made.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a washing machine with a filtering device and a control method thereof, wherein the filtering device has a self-cleaning function, a recovery device is arranged in the washing machine, sewage discharged by the filtering device can be collected, filtered impurities in the sewage are prevented from being directly discharged, and meanwhile, a pressure difference is formed inside and outside a drain outlet of the filtering device by arranging a suction device, so that a driving force is provided for discharging the sewage in the filtering device, and the sewage is ensured to be smoothly and fully discharged out of the filtering device.

In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that:

a washing machine, comprising:

a water holding cylinder;

the filtering device is communicated with the water containing cylinder, receives water in the water containing cylinder for filtering, and is provided with a sewage outlet for discharging sewage outwards;

further comprises:

the suction device performs suction action and drives sewage in the filtering device to be discharged through the sewage outlet under the action of pressure difference;

and the recovery device is used for collecting the sewage discharged by the filtering device.

Further, the suction device is communicated between the sewage outlet of the filtering device and the recovery device through a suction pipeline, and suction action is executed according to the instruction;

Preferably, the suction device is an air pump.

Further, the sewage outlet of the filtering device is communicated with a sewage temporary storage device with an inner containing cavity, the sewage temporary storage device is communicated with the recycling device, and the suction pipeline is communicated with the inner containing cavity of the sewage temporary storage device;

the suction device performs suction action, and sewage in the filtering 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;

preferably, the sewage temporary storage device is provided with an air hole for communicating the internal cavity and the external space of the sewage temporary storage device; the suction device is closed, external air enters the internal cavity of the sewage temporary storage device through the air holes, and sewage in the internal cavity is driven to be discharged into the recovery device;

more preferably, the ventilation holes are arranged in the top area of the sewage temporary storage device.

Further, 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 sewage in the sewage temporary storage device is discharged into the recovery device under the action of gravity;

and/or the washing machine further comprises an inflating device for introducing gas into the sewage temporary storage device and driving sewage in the sewage temporary storage device to be discharged into the recovery device; or the suction device is also used for introducing gas into the sewage temporary storage device to drive sewage in the sewage temporary storage device to be discharged into the recovery device.

Further, a buffer part is arranged between the suction device and the sewage temporary storage device, and a buffer cavity is formed in the buffer part; the buffer chamber is communicated with the internal containing cavity of the sewage temporary storage device, the suction pipeline is connected with the buffer part, and the suction device and the buffer chamber are conducted.

Further, a drain control valve which can be opened/closed is arranged between the drain outlet of the filtering device and the suction inlet end of the suction pipeline;

preferably, the sewage outlet of the filtering device is communicated with a sewage temporary storage device with an inner containing cavity, the sewage temporary storage device is communicated with the recycling device, the suction pipeline is communicated with the sewage temporary storage device, and the sewage control valve is arranged between the sewage outlet of the filtering device and the sewage temporary storage device.

Further, the recovery device includes:

a housing having a recovery chamber therein;

the filter assembly is arranged in the recovery cavity and divides the recovery cavity into a first cavity and a second cavity;

the sewage carrying the filtered impurities enters the first chamber, is filtered by the filtering component and then enters the second chamber, and the filtered impurities are collected in the first chamber;

preferably, a water outlet is arranged on the second chamber and is used for discharging filtered clean water.

Another object of the present invention is to provide a control method of the above-mentioned washing machine, comprising: the suction device is controlled to execute suction action, and sewage in the filtering device is discharged through the sewage outlet and enters the recovery device under the action of pressure difference.

Further, the sewage outlet of the filtering device is communicated with a sewage temporary storage device with an inner containing cavity, the sewage temporary storage device is communicated with the recycling device, and the suction device is communicated with the sewage temporary storage device;

the control method comprises the following steps:

s1, controlling a suction device to execute suction action, wherein air in a sewage temporary storage device is pumped out, and sewage in a filtering device is discharged into the sewage temporary storage device under the action of pressure difference;

s2, closing the suction device, and discharging the sewage in the sewage temporary storage device into the recovery device;

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;

preferably, the washing machine further includes an air pumping device communicated with the sewage temporary storage device, and step S2 includes: closing the suction device, opening the inflating device, introducing gas into the sewage temporary storage device, and driving sewage in the sewage temporary storage device to be discharged into the recovery device;

Or, the suction device is further used for introducing gas into the sewage temporary storage device, and step S2 includes: and closing the suction device, controlling the suction device to perform inflation, introducing gas into the sewage temporary storage device, and driving sewage in the sewage temporary storage device to be discharged into the recovery device.

Further, a pollution discharge control valve which can be opened/closed is arranged between the filtering device and the sewage temporary storage device;

the step S1 specifically comprises the following steps:

s11, controlling the suction device to perform suction action, and sucking air in the sewage temporary storage device;

s12, opening a sewage discharge control valve, and discharging sewage in the filtering device into the sewage temporary storage device under the action of pressure difference.

By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects.

According to the invention, the recovery device is arranged in the washing machine, so that the sewage discharged by the filtering device can be collected, filtered impurities such as thread scraps carried in the sewage are prevented from being directly discharged out of the washing machine, and the effect on the ecological environment and human health caused by that micro plastics in the filtered impurities enter ecological circulation along with the water flow of the discharged water is avoided. The suction device is used for executing suction action, so that pressure difference can be formed inside and outside a sewage outlet of the filtering device, driving force is provided for sewage discharge in the filtering device, and the situation that sewage cannot be discharged due to too far distance between the filtering device and the recovery device or height difference is avoided.

According to the invention, the sewage temporary storage device and the buffer part can be used for accommodating sewage discharged by the filter device in the working process of the suction device, so that the suction device is protected, and sewage discharged by the filter device is prevented from entering the suction device through the pipeline, and the working performance of the suction device is prevented from being influenced. The air holes can enable the air pressure in the sewage temporary storage device to be balanced with the external air pressure after the suction device is closed, so that the situation that sewage cannot flow into the recovery device is avoided.

In the invention, the filter assembly is arranged in the recovery device, so that the collected sewage can be filtered, and the filtered impurities are separated from the water, thereby being convenient for users to treat the filtered impurities. The water outlet is arranged on the second chamber, so that filtered clean water can be discharged out of the recovery device at any time, the capacity of the recovery device is not required to be enlarged, the overflow condition of the recovery device can be avoided, and the internal space of the washing machine can be saved.

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:

Fig. 1 is a schematic view of a structure of a washing machine in an embodiment of the present invention;

fig. 2 is a schematic view illustrating an internal structure of a washing machine in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view showing a communication structure between a filtering device and a recycling device according to a first embodiment of the present invention;

FIG. 4 is a schematic diagram showing a communication structure between a filtering device and a recycling device in a second embodiment of the present invention;

FIG. 5 is a partial enlarged view (normal state) of the sewage inlet of the recovery apparatus in the third embodiment of the present invention;

FIG. 6 is a partial enlarged view of the sewage inlet of the recovery apparatus (blocking state when the air pump is turned on) in the third embodiment of the present invention;

FIG. 7 is a partially enlarged view of the sewage inlet of the recovery apparatus in the third embodiment of the present invention (opened state after the air pump is turned off);

FIG. 8 is a schematic view of a third embodiment of the present invention;

FIG. 9 is a schematic diagram of a communication structure between a filtering device and a recycling device (no water in a sewage temporary storage device) in a fourth embodiment of the present invention;

FIG. 10 is an enlarged schematic view of the invention at A in FIG. 9;

FIG. 11 is a schematic diagram of a communication structure between a filtering device and a recycling device (sewage temporary storage device is filled with water) in a fourth embodiment of the present invention;

FIG. 12 is an enlarged schematic view of the invention at B in FIG. 11;

FIG. 13 is a schematic view showing a communication structure between a filtering device and a recycling device in a sixth embodiment of the present invention;

fig. 14 is a schematic view illustrating an internal structure of a washing machine in accordance with a seventh embodiment of the present invention.

In the figure: 10. a case; 100. a water holding cylinder; 110. a window pad; 210. a drainage pipeline; 220. a circulation line; 230. a water return line; 240. a sewage discharge pipeline; 241. a blowdown control valve; 250. an outer line; 260. a water drum drain pipe; 270. a switching device; 300. a water inlet box; 400. a circulation pump; 500. a recovery device; 510. a housing; 520. a filter assembly; 531. a first chamber; 532. a second chamber; 540. a blocking member; 541. a base; 542. an opening part; 550. a sewage inlet; 551. a tubular portion; 552. a connection part; 600. a filtering device; 610. a filter cavity; 6101. a water inlet; 6102. a filtered water outlet; 6103. A sewage outlet; 620. a filtering mechanism; 621. a water outlet joint; 660. a driving mechanism; 680. cleaning the particles; 690. a baffle; 810. an air pump; 811. a suction line; 820. a sewage temporary storage device; 821. ventilation holes; 822. a floating ball; 823. a guide section; 830. a buffer section; 831. a vent line; 832. and a vent hole.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Example 1

As shown in fig. 1 to 3, the present embodiment provides a washing machine including:

a water drum 100;

a filtering device 600, which is communicated with the water containing cylinder 100, receives water in the water containing cylinder 100 for filtering, and has a drain 6103 for discharging sewage outwards;

and a recovery device 500 for collecting the sewage discharged from the filtering device 600.

In this embodiment, the washing machine is provided with a circulation filter pipe, both ends of which are respectively communicated with the water tub 100, and the filter device 600 is disposed on the circulation filter pipe. The circulating filter pipeline is also provided with a circulating pump 400, water in the water containing cylinder 100 is driven by the circulating pump 400 to continuously circulate through the circulating filter pipeline, and filtering impurities such as thread scraps can be removed when the water passes through the filtering device 600, so that the thread scraps content in the water can be reduced, and the washing effect of clothes can be improved.

The drain 6103 is arranged on the filter device 600, and filtered impurities remained in the filter device 600 after filtration can be discharged from the drain 6103 along with water flow, so that a user does not need to take out the filter device 600 for manual cleaning, and the use is more convenient. The recovery device 500 is communicated with the drain 6103 of the filter device 600, and the sewage carrying the filtered impurities is discharged from the drain 6103 and then can enter the recovery device 500 to be collected without being collected into the drainage water flow to be discharged out of the washing machine. The method avoids that the micro plastics in the filtered impurities are discharged along with water flow and enter the ecological cycle, thereby bringing harm to the ecological environment and human health.

The filtering device 600 may be spaced far from the recovery device 500 due to the limitation of the inner space of the washing machine, resulting in a long path through which the contaminated water is discharged into the recovery device 500. As shown in fig. 1, the recovery device 500 and the filtering device 600 in the present embodiment are respectively provided at left and right side areas of the top of the cabinet 10 of the washing machine, and it is difficult for sewage in the filtering device 600 to be thoroughly discharged into the recovery device 500 without an external force. And if the recovery device 500 is disposed at a higher level than the drain 6103 of the filtering device 600, even a situation may occur in which sewage cannot be discharged.

The conventional water pump is generally used to provide power for driving water flow, but the filtering device 600 discharges sewage carrying filtered impurities into the recovery device 500, and the sewage may be blocked when passing through the pump body of the water pump by adopting the conventional pumping mode, so that the washing machine fails.

To solve the problem of sewage discharged from the filtering device 600 to the recovery device 500, the washing machine of this embodiment is provided with a suction device, and the suction device can perform a suction action to suck air in the space outside the drain 6103, so as to drive sewage in the filtering device 600 to be discharged into the recovery device 500 through the drain 6103 under the action of pressure difference.

In this embodiment, an air pump 810 is employed as the suction means. Specifically, when the filtering device 600 needs to discharge sewage, the air pump 810 is controlled to perform the suction action, and the air in the space outside the sewage outlet 6103 is pumped by the air pump 810, so that the pipeline outside the sewage outlet 6103 forms a negative pressure environment, and the sewage in the filtering device 600 can be discharged under the action of the pressure difference and finally discharged into the recovery device 500.

By the above mode, sewage in the filtering device 600 can be discharged into the recycling device 500 to be collected efficiently and rapidly, meanwhile, the air pump 810 is only used for sucking air to form a negative pressure environment, discharged sewage does not pass through the air pump 810, and the problem that pump body is blocked easily due to water pump conveying is avoided.

In the present embodiment, the air pump 810 is connected between the drain 6103 of the filtering device 600 and the recovery device 500 through the suction pipe 811, and performs a suction action according to an instruction. The instruction is an instruction for controlling the filtering apparatus 600 to discharge sewage.

Further, the drain 6103 of the filtering device 600 communicates with the sewage temporary storage device 820 having an inner cavity, the sewage temporary storage device 820 communicates with the recovery device 500, and the suction pipe 811 communicates with the inner cavity of the sewage temporary storage device 820.

When the filtering apparatus 600 discharges the contaminated water outward, the washing machine performs the steps of:

s1, controlling an air pump 810 to perform suction action, wherein air in a sewage temporary storage device 820 is pumped out by the air pump 810, and sewage in a filtering device 600 is discharged into the sewage temporary storage device 820 under the action of pressure difference;

s2, the air pump 810 is turned off, the suction effect generated by the air pump 810 is eliminated, and the sewage in the sewage temporary storage device 820 is discharged into the recovery device 500.

In the above-described aspect, by providing the sewage temporary storage device 820, sewage is temporarily stored in the inner chamber of the sewage temporary storage device 820 after being drawn out from the filtering device 600 under the pressure difference. So avoided when sewage flows out fast from filter equipment 600, receive the great suction of air pump 810 and get into the condition of air pump 810 along suction line 811, played the guard action to air pump 810, prevented that the working property of air pump 810 from receiving the influence.

Preferably, a vent is provided at the top of the sewage temporary storage device 820 to communicate with the suction line 811. The suction line 811 is connected to the top region of the sewage temporary storage device 820, and sewage may enter the suction line 811 in a state where the internal chamber thereof is filled with sewage. Thus, the internal cavity of the sewage temporary storage device 820 can be utilized to the maximum extent, and the sewage amount which can be contained by the sewage temporary storage device 820 can be improved.

In this embodiment, the water outlet of the sewage temporary storage device 820 is higher than the sewage inlet of the recovery device 500, and after the air pump 810 is closed to stop pumping, the sewage in the sewage temporary storage device 820 is discharged into the recovery device 500 under the action of gravity.

In a preferred embodiment of this embodiment, the sewage temporary storage device 820 is provided with an air vent 821 for communicating the internal cavity and the external space of the sewage temporary storage device 820. After the air pump 810 is turned off, external air enters the internal cavity of the sewage temporary storage device 820 through the air holes 821, and the sewage therein is driven to be discharged into the recovery device 500. The ventilation hole 821 is also provided at the top region of the sewage temporary storage device 820, similar to the ventilation hole for communicating with the suction pipe 811.

In the above scheme, the opening area of the air vent 821 is small, and when the air pump 810 is in an on state to perform the pumping action, the air entering the sewage temporary storage device 820 through the air vent 821 does not have a significant influence on the formation of the negative pressure environment. After the air pump 810 is turned off, air in the sewage temporary storage device 820 is not pumped out, and the inside of the sewage temporary storage device 820 can be quickly restored to be close to the atmospheric pressure due to the arrangement of the air holes 821, and sewage is pushed to be discharged into the recovery device 500 through the entering of air. By providing the ventilation holes 821 on the sewage temporary storage device 820, the situation that the sewage cannot flow into the recovery device 500 after the air pump 810 stops working due to the overlarge air pressure in the recovery device 500 is avoided.

In this embodiment, the air pump 810 is a bi-directional pump, which can perform a pumping action to pump air, or perform an inflating action to introduce air into the sewage temporary storage device 820. In the above step S2, the air pump 810 is turned off to stop sucking air, and then the air pump 810 is turned on again to control the air pump 810 to perform the pumping action, and air is introduced into the sewage temporary storage device 820 to drive the sewage therein to be discharged into the recovery device 500.

In another aspect of this embodiment, the air pump 810 is an air pump having only a pumping function. The washing machine further includes an air pumping device (not shown) such as an air pumping pump, which is in communication with the sewage temporary storage device. In the above scheme, step S2 includes: the air pump 810 is turned off, the air pumping device is turned on, air is introduced into the sewage temporary storage device 820, and sewage therein is driven to be discharged into the recovery device 500.

In a further aspect of this embodiment, a drain control valve 241 is provided between the drain 6103 of the filter device 600 and the suction inlet of the suction line 811, which can be opened/closed. Specifically, the drain control valve 241 is disposed between the filtering apparatus 600 and the sewage temporary storage device 820.

In detail, the drain 6103 is communicated with the sewage temporary storage device 820 through the drain pipeline 240, and the drain control valve 241 is disposed on the drain pipeline 240 to control the on-off of the drain pipeline 240.

When the circulating pump 400 drives the water in the water containing cylinder 100 to perform circulating filtration, the sewage control valve 241 is in a closed state, and the sewage pipeline 240 is disconnected. When it is necessary to drain the contaminated water in the filtering apparatus 600, the washing machine sequentially performs the steps of:

s11, controlling the air pump 810 to perform a pumping action, and pumping air in the sewage temporary storage device 820;

s12, opening a sewage control valve 241, conducting a sewage pipeline 240, and discharging sewage in the filtering device 600 into a sewage temporary storage device 820 under the action of pressure difference;

s2, the air pump 810 is turned off, and the sewage in the sewage temporary storage device 820 is discharged into the recovery device 500.

In the above-mentioned scheme, the blowdown control valve 241 is kept in a closed state at the initial stage when the air pump 810 starts to perform the suction action, and the filter device 600 is not communicated with the sewage temporary storage device 820, so that a more obvious negative pressure environment can be formed in the sewage temporary storage device 820 more quickly. And then the drain control valve 241 is opened again, the sewage in the filtering apparatus 600 may be subjected to a greater driving force, thereby being efficiently and sufficiently discharged into the sewage temporary storage device 820.

In a further aspect of this embodiment, the recovery device 500 specifically includes:

a housing 510 having a recovery chamber therein;

a filter assembly 520 is disposed within the recovery chamber, dividing the recovery chamber into a first chamber 531 and a second chamber 532.

The sewage temporary storage device 820 is communicated with the first chamber 531, sewage carrying filtered impurities enters the first chamber 531, filtered by the filter component 520 and enters the second chamber 532, and the filtered impurities are collected in the first chamber 531.

In the above-mentioned scheme, after the recovery device 500 collects the sewage discharged from the filtering device 600, the sewage may be filtered by the internal filtering assembly 520, so as to separate out the filtered impurities in the sewage. Like this, the user can directly collect the processing to the filtration impurity that separates, has avoided filtering impurity to mix in sewage, can't carry out the condition of effective treatment to it.

Specifically, the filter assembly 520 may be a frame horizontally disposed at a certain height in the recovery chamber and a filter screen laid on the frame, the filter assembly 520 having a first chamber 531 formed at an upper side and a second chamber 532 formed at a lower side. After the contaminated water carrying the filtered impurities enters the first chamber 531, the water may enter the second chamber 532 through the filter assembly 520, and the filtered impurities are blocked by the filter screen and remain on the upper surface of the filter assembly 520.

Wherein, the filter screen of the filter component 520 can filter the microplastic in the sewage to prevent the microplastic from being mixed into the water body.

In this embodiment, the recovery device 500 is provided on the cabinet 10 of the washing machine so that the recovery device 500 can be inserted into and withdrawn from the cabinet 10 for cleaning.

Specifically, a housing 510 of the recovery device 500 is provided on the casing 10 to be insertable/withdrawable, and an upper side of the housing 510 has an opening. When the user withdraws the housing 510 from the case 10, the filtered foreign substances attached to the upper surface of the filter assembly 520 can be cleaned through the opening of the upper side of the housing 510. The filter assembly 520 is preferably removably coupled to the housing 510, and a user may remove the filter assembly 520 from the interior of the housing 510 and remove it for cleaning, thereby facilitating operation.

In a preferred embodiment of the present invention, a water outlet is provided in the second chamber 532 for discharging the filtered clean water. By providing the water outlet on the second chamber 532, the clean water entering the second chamber 532 can be timely discharged out of the recovery device 500, so that the recovery device 500 is prevented from overflowing when the sewage amount discharged by the filtering device 600 is large. Otherwise, the capacity of the second chamber 532 needs to be increased, that is, the volume of the recovery device 500 needs to be increased, which causes that it occupies a large space inside the washing machine, which is not beneficial to miniaturization of the whole volume of the washing machine.

On the other hand, the water in the second chamber 532 can be automatically discharged from the water outlet, so that the user only needs to clean the filtered impurities on the filter assembly 520 when cleaning the recovery device 500, and does not need to manually pour out the clean water in the second chamber 532. When the filter assembly 520 is detachably installed in the housing 510, a user does not even need to completely remove the housing 510 from the cabinet 10 of the washing machine, and only needs to take out the filter assembly 520 for cleaning, thereby facilitating the operation.

Preferably, the water outlet of the second chamber 532 is communicated with the water containing cylinder 100 through a pipeline, so that clean water filtered by the filtering component 520 can be introduced into the water containing cylinder 100 for recycling, and further, the water consumption of the washing machine can be saved. Or, the water outlet of the second chamber 532 can be communicated with the outside of the washing machine through a pipeline, and the filtered water without filtering impurities can be directly discharged out of the washing machine, so that the problem that the micro plastics enter the ecological cycle is avoided.

In this embodiment, the filtering device 600 specifically includes:

the filter cavity 610 is provided with a water inlet 6101, a filtered water outlet 6102 and a sewage outlet 6103, wherein the water inlet 6101 and the filtered water outlet 6102 are connected with the circulating filter pipeline;

a filter mechanism 620 rotatably disposed within the filter cavity 610;

the drive mechanism 660 drives the filter mechanism 620 to rotate within the filter cavity 610.

The filter mechanism 620 includes a filter support and a filter covered on the surface of the filter support, and divides the interior of the filter cavity 610 into an outer cavity and an inner cavity. The water in the water containing barrel 100 enters the outer cavity of the filter cavity 610 through the water inlet 6101, the filtered impurities in the water are blocked by the filter screen, the filtered impurities are attached to the outer surface of the filter mechanism 620, the clean water without the filtered impurities enters the inner cavity, flows out through the water outlet connector 621 communicated with the inner cavity, and finally flows out of the filter cavity 610 from the filtered water outlet 6102. Through the aperture design to the filter screen for filtering mechanism 620 not only can filter the jumbo size line bits in the aquatic, can also filter the microplastic in the aquatic, thereby reduce the content of microplastic in the washing machine drainage by a wide margin.

When the filter device 600 needs to be cleaned, the filter mechanism 620 is driven to rotate in the filter cavity 610 by the driving mechanism 660, such as a motor, so as to agitate the water remained in the filter cavity 610, and the filtered impurities attached to the surface of the filter mechanism 620 are peeled off from the filter mechanism 620 under the action of centrifugal force and the turbulent water flow and are fused into the water in the filter cavity 610. Eventually, the sewage is discharged from the sewage outlet 6103 by the air pump 810, and collected by the recovery device 500.

In this embodiment, the self-cleaning operation of turning on the driving mechanism 660 to rotate the filtering mechanism 620 and/or the pumping operation of the air pump 810 is controlled to perform the sewage draining operation of the sewage draining filtering apparatus 600 at least once during one complete washing process of the washing machine. The filter mechanism 620 may remain stationary while the blowdown operation is being performed, or may be rotated by the drive mechanism 660.

Further, cleaning particles 680 are further disposed in the filter cavity 610 of the filter device 600, so as to clean the inner wall of the filter cavity 610 and the outer wall of the filter mechanism 620 along with the friction collision of water flow. In the circulation filtering process, the cleaning particles 680 continuously rub against the inner wall of the filtering cavity 610 and the outer wall of the filtering mechanism 620 along with flowing water flow, so that the attached filtering impurities fall off, deposition of the filtering impurities is prevented, and the filtering mechanism 620 is prevented from being covered by the filtering impurities, so that the filtering efficiency is prevented from being influenced. When the filtering mechanism 620 rotates to perform self-cleaning, the cleaning particles 680 move in the filtering cavity 610 along with the action of the agitating water flow, and rub against the inner wall of the filtering cavity 610 and the outer wall of the filtering mechanism 620, so that the stripping efficiency of filtering impurities is improved, and the self-cleaning effect of the filtering device 600 is better.

A baffle 690 is further disposed in the filter chamber 610 to divide the interior of the filter chamber 610 into a first space on the left side and a second space on the right side, and the cleaning particles 680 and the main body portion of the filter mechanism 620 are disposed in the first space. The water inlet 6101 communicates with the first space, and the filtered water outlet 6102 and the drain 6103 communicate with the second space. The baffle 690 is provided with the water passing hole communicated with the first space and the second space, sewage in the filter cavity 610 can be discharged from the sewage outlet 6103 through the baffle 690, and the cleaning particles 680 can not pass through the water passing hole, so that the cleaning particles 680 are blocked on the left side by the baffle 690, and the situation that the cleaning particles 680 are discharged along with sewage through the sewage outlet 6103 or are accumulated at the sewage outlet 6103 to cause blockage is avoided.

The circulating filter pipeline of the washing machine in the embodiment specifically comprises:

a water drum drain pipe 260 connecting the water drum 100 with the water inlet end of the circulation pump 400;

a drain pipe 210 having one end connected to a water outlet end of the circulation pump 400 and the other end connected to the switching device 270;

the circulation pipeline 220, one end of which is connected with the switching device 270, and the other end of which is connected with the water inlet 6101 of the filtering device 600;

the water return pipe 230 has one end connected to the filtered water outlet 6102 of the filter device 600 and the other end connected to the water container 100, and conveys the filtered water to the water container 100.

The switching device 270 is further connected to the drain pipe 250 for draining water to the outside of the washing machine, and the switching device 270 can control the circulation pipe 220 and the drain pipe 250 to be selectively communicated with the drain pipe 210. Thus, the circulation pump 400 can provide driving force for the circulation filtration and drainage of the washing machine, and the corresponding functions can be realized only by controlling the conduction direction of the switching device 270.

The water outlet end of the water return pipeline 230 is connected to the window pad 110 at the mouth of the water containing cylinder 100, and the water filtered by the filtering device 600 enters from the window pad 110 back into the water containing cylinder 100.

In this embodiment, the recovery device 500 is disposed in the washing machine, so that the sewage discharged by the filtering device 600 can be collected, and the problem that the sewage carrying the filtered impurities is directly discharged out of the washing machine, so that the micro plastics in the filtered impurities enter the ecological cycle and influence the ecological environment and the human health is avoided. The recovery device 500 is internally provided with the filtering component 520 for filtering the collected sewage, so that the filtered impurities therein are separated from the water, and the filtered impurities are convenient to clean.

The washing machine is provided with an air pump 810 for sucking air between the filter device 600 and the recovery device 500, forming a negative pressure environment outside the drain 6103, and driving the sewage in the filter device 600 to be discharged from the drain 6103 into the recovery device 500 by a pressure difference, so that the sewage in the filter device 600 can be sufficiently discharged even if the distance between the filter device 600 and the recovery device 500 is long or there is a height difference. The sewage temporary storage device 820 is arranged between the filtering device 600 and the recycling device 500 and is directly communicated with the air pump 810, so that the condition of sucking sewage when the air pump 810 sucks air is prevented. The sewage is discharged by sucking air through the air pump 810, and compared with the traditional driving mode of the water pump, the problem that the water pump is blocked due to the filtered impurities in the sewage is avoided, and the sewage is discharged more smoothly.

Example two

As shown in fig. 4, this embodiment is further defined by the first embodiment, where a buffer portion 830 is disposed between the air pump 810 and the sewage temporary storage device 820, and a buffer chamber is provided in the buffer portion 830. The buffer chamber is communicated with the inner cavity of the sewage temporary storage device 820, the suction pipeline 811 is connected with the buffer part 830, and the air pump 810 and the buffer chamber are communicated.

In the above scheme, after the air pump 810 is turned on, the inside of the buffer portion 830 and the inside of the sewage temporary storage device 820 are sucked to be in a negative pressure state, and then after the sewage control valve 241 is turned on, the sewage in the filtering device 600 can be rapidly discharged under the pressure difference. By providing the buffer part 830 between the air pump 810 and the sewage temporary storage device 820, even if the amount of discharged sewage is large, resulting in overflowing from the sewage temporary storage device 820, part of overflowed sewage can be stored in the buffer chamber of the buffer part 830 without directly entering the air pump 810.

In a preferred embodiment of the present embodiment, the buffer portion 830 is disposed above the sewage temporary storage device 820 and is communicated through a ventilation pipe 831 extending vertically. Further, an air pump 810 is provided above the buffer portion 830, and a suction pipe 811 vertically extends to communicate the air pump 810 with the buffer chamber of the buffer portion 830. In this way, the suction force required for the sewage to enter the buffer 830 and the air pump 810 is greater, further preventing the air pump 810 from being charged with water.

In this embodiment, by providing the buffer portion 830 between the air pump 810 and the sewage temporary storage device 820, sewage overflowed from the sewage temporary storage device 820 can be stored, and the sewage is prevented from entering the air pump 810 when the amount of sewage is excessively large. The sewage temporary storage device 820, the ventilation pipeline 831, the buffer portion 830, the suction pipeline 811 and the air pump 810 are sequentially arranged from bottom to top, so that the lifting height required by sewage entering the air pump 810 is increased, and further, larger suction force is required, and the water inlet condition of the air pump 810 can be more effectively prevented.

Example III

As shown in fig. 3 to 8, this embodiment is further defined as the first or second embodiment, and the sewage inlet 550 of the recovery device 500 is provided with a blocking member 540 that is unidirectional from outside to inside.

When the air pump 810 performs the pumping action, the blocking member 540 can block the sewage inlet 550 of the recovery device 500, so that the air in the recovery device 500 cannot be pumped out from the sewage inlet 550, and the space between the sewage outlet 6103 and the recovery device 500 is relatively independent. Thus, under the suction effect of the air pump 810, a negative pressure environment can be formed on the outer side of the drain 6103 quickly, and the efficiency of sewage discharge can be improved. After the air pump 810 is turned off, the suction effect is eliminated, the sewage flows to the outside of the sewage temporary storage device 820 by the gravity effect or the air pressure increasing effect generated by the air entering the sewage temporary storage device 820, the blocking member 540 can open the sewage inlet 550 by the water pressure effect, and the sewage enters the recovery device 500 to be collected.

Specifically, the blocking member 540 specifically includes:

a base 541 mounted on the sewage inlet 550 of the recovery apparatus 500;

the opening portion 542 is movable relative to the base 541, and opens/closes the space outside and inside the recovery device 500.

Further, the sewage inlet 550 is provided in the housing 510 of the recovery device 500, and the outer circumference of the sewage inlet 550 extends from the inner wall of the housing 510 of the recovery device 500 to a certain length inside the recovery device 500 to form a tubular portion 551. The base 541 is mounted on the extending end of the tubular portion 551, and the opening portion 542 is movable relative to the extending end of the tubular portion 551 to open/close the opening of the extending end of the tubular portion 551.

In detail, the base 541 is sleeved at the extending end of the tubular portion 551, the opening portion 542 covers the opening of the tubular portion 551 from the outside of the tubular portion 551 to realize the blocking, and the opening portion 542 is turned to open the opening in a direction away from the tubular portion 551. The plugging member 540 has a simple structure, and the opening portion 542 abuts against the right end face of the tubular portion 551, so that the plugging member cannot turn over to the inner side of the tubular portion 551, and the sewage inlet 550 is communicated unidirectionally from outside to inside.

In one version of this embodiment, the opening portion 542 is made of a flexible material that can be elastically deformed, such as rubber or the like. When the air pump 810 is turned on, the opening portion 542 covers the opening and deforms to protrude toward the inside of the tubular portion 551, so as to seal the opening. The opening portion 542 may form a certain wrapping with an included angle between the inner wall of the tubular portion 551 and the right end surface of the tubular portion 551, so as to increase the contact area between the opening portion 542 and the opening of the tubular portion 551. Meanwhile, the surface of the opening portion 542 facing the tubular portion 551 forms a convex surface, and the surface area is increased, that is, the stress area of the opening portion 542 subjected to the negative pressure adsorption force is increased, so that a better sealing effect can be achieved on the sewage inlet 550 through the sealing member 540, and the rapid formation of a negative pressure environment is facilitated.

Further, the opening portion 542 and the base 541 are integrally formed, that is, the whole of the blocking member 540 is made of a flexible material, and no additional connection structure is required between the base 541 and the opening portion 542, so that the opening portion 542 and the base 541 can move relatively, and the opening at the right end of the tubular portion 551 can be opened/blocked by the movement of the opening portion 542.

In another aspect of this embodiment, the opening portion of the plugging member is made of a hard material, and a surface of the opening portion facing the opening of the tubular portion is a convex surface protruding toward the inside of the tubular portion. Specifically, the opening of the tubular part is circular, the opening part is of a disc-shaped structure, and the surface of the opening part facing the opening of the tubular part is a cambered surface with a convex middle.

When the opening part is used for blocking the opening of the tubular part, the opening part is provided with the cambered surface, so that the opening part can partially extend into the opening, the surface of the opening part, which is contacted with the opening part of the tubular part, is inclined relative to the end surface of the tubular part, the opening can be blocked more firmly, and the sealing effect is better. Meanwhile, the cambered surface structure of the opening part increases the surface area, namely the stressed area of the opening part, which is subjected to the suction of the air pump, and can further strengthen the sealing performance, so that a negative pressure environment is better formed between the sewage draining outlet of the filtering device and the recycling device.

The opening part of the plugging piece and the base body are arranged separately and can be movably connected relatively. Specifically, the opening portion is rotatably connected to the base body, and the opening portion opens/closes the opening of the tubular portion by a tilting movement.

Or the opening part and the matrix can be formed integrally by plastic, wherein the opening part and the matrix are both in a hard form and cannot be obviously deformed. The opening part and the base body are connected through a connecting sheet with small thickness, and the connecting sheet is thinner and can deform under small acting force, so that relative movement can be generated between the opening part and the base body.

In a further aspect of this embodiment, the outer periphery of the sewage inlet 550 extends from the outer wall of the housing 510 of the recovery device 500 to a certain length outside the recovery device 500 to form a connection portion 552, and the connection portion 552 is configured to be connected to a pipeline and to be communicated to the sewage temporary storage device 820 through the pipeline. The end of the pipe may be sleeved on the connection portion 552, so that the installation is more convenient.

In this embodiment, the one-way conduction blocking member 540 is disposed at the sewage inlet 550 of the recovery device 500, and the blocking member 540 can seal the sewage inlet 550 of the recovery device 500 when the air pump 810 pumps air, so as to form a negative pressure environment more rapidly, and increase the pressure difference that can be formed by the sewage outlet 6103, so as to improve the sewage draining efficiency of the filtering device 600. After the air pump 810 is turned off, the blocking member 540 can automatically open the sewage inlet 550 under the impact of water flow, so that sewage smoothly enters the recycling apparatus 500 to be collected.

Example IV

As shown in fig. 9 to 12, this embodiment is further defined by the second or third embodiment, and the washing machine further includes an isolation mechanism disposed between the drain 6103 and the air pump 810, where the isolation mechanism can gradually disconnect the communication between the air pump 810 and the drain 6103 along with the discharge of the sewage, so as to prevent the sewage discharged from the drain 6103 from being excessively large when the air pump 810 continues to suck, and the sewage is sucked into the air pump 810. Thus, the air pump 810 can be protected, and sewage is prevented from entering the air pump 810 to influence the working performance of the air pump 810.

In this embodiment, the isolation mechanism includes a floating member, and a vent 832 is disposed on a communication path between the air pump 810 and the drain 6103. During the sewage discharge process, the floating member rises to the lower part of the vent 832 along with the water surface to seal the vent 832.

In this embodiment, the floating member is a floating ball 822, and the diameter of the floating ball 822 is larger than the diameter of the vent 832.

In a further aspect of this embodiment, the float 822 is disposed inside the sewage temporary storage device 820, and the vent 832 is disposed on a top wall of the sewage temporary storage device 820. Preferably, the isolation mechanism further includes a guide 823 extending from the bottom of the sewage temporary storage device 820 toward the vent 832, the guide 823 having a hollow passage in which the float ball 822 is disposed.

As shown in fig. 9 and 10, in the initial state, no water exists in the sewage temporary storage device 820, and the float 822 is positioned at the bottom end of the guide 823. The water surface in the sewage temporary storage device 820 is gradually raised during the process of discharging sewage into the sewage temporary storage device 820. The side wall of the guide part 823 is provided with a through hole for communicating the hollow channel with the external space of the guide part 823, the water surface in the guide part 823 is synchronously raised, the floating ball 822 always floats on the water surface, and the floating ball gradually rises along with the rise of the water surface. As shown in fig. 11 and 12, when the sewage temporary storage device 820 is filled with water, the floating ball 822 rises to the top of the sewage temporary storage device 820 along with the water surface, and the sewage is blocked from below the vent 832, so that the sewage cannot further overflow upwards through the vent 832, and the sewage is ensured not to overflow from the vent 832 into the air pump 810.

In the above scheme, the air vent 832 is blocked by the floating ball 822 arranged in the sewage temporary storage device 820, and the air vent 832 can be blocked when the sewage temporary storage device 820 reaches a full water state, so that the filter device 600 can discharge a larger amount of sewage at one time on the premise that the sewage cannot enter the air pump 810, and the sewage discharge efficiency is improved. By providing the guide part 823 to guide the movement of the floating ball 822, the floating ball 822 can only reciprocate in the guide part 823, and the situation that the vent 832 is not blocked due to the fact that the movement track of the floating ball 822 is deviated is avoided.

In this embodiment, the guide portion 823 has a circular tubular structure, and the inner diameter of the guide portion 823 is larger than the outer diameter of the float ball 822. The clearance fit between the floating ball 822 and the guide part 823 reduces or even eliminates the friction resistance existing when the floating ball 822 reciprocates in the guide part 823, thereby avoiding the situation that the floating ball 822 is blocked in the guide part 823 and cannot rise along with the water surface.

In the preferred solution of this embodiment, the guide 823 extends vertically inside the sewage temporary storage device 820, which is more beneficial for the floating ball 822 to rise along with the water surface to block the vent 832.

In this embodiment, the lower end of the air vent pipeline 831 is connected to the top wall of the sewage temporary storage device 820, and the connection between the air vent pipeline 831 and the sewage temporary storage device 820 forms an air vent 832. The diameter of the floating ball 822 is larger than that of the vent pipeline 831, the floating ball 822 ascends along with the water surface to seal the vent 832, i.e. the floating ball 822 moves to the lower end of the vent pipeline 831 to seal the lower end opening of the vent pipeline 831.

In this embodiment, through setting up floater 822 and guiding portion 823 in sewage temporary storage device 820, can prevent that sewage from spilling over from air vent 832 through floater 822 shutoff air vent 832 above when sewage is full of sewage temporary storage device 820, and then can not appear sewage and spill over the condition of getting into air pump 810, guaranteed the working property of air pump 810.

Example five

The difference between this embodiment and the fourth embodiment is that: the isolating mechanism formed by the floating ball and the guiding part is arranged inside the buffer part.

Specifically, the top wall of the buffer part is provided with a vent hole and is communicated with the air pump through a suction pipeline. The buffer part is internally provided with a guide part which vertically extends upwards from the bottom to the vent hole, the side wall of the guide part is provided with a through hole, and the floating ball is arranged inside the guide part.

In this embodiment, the volume of the sewage temporary storage device is set to be larger than the volume of the filtering device, and under the condition that the washing machine is normally operated, sewage is generally not fully filled in the sewage temporary storage device. However, in some abnormal situations, overflow caused by a large amount of sewage entering the sewage temporary storage device may occur. At this time, sewage enters the buffer portion upward along the ventilation line, gradually accumulates in the buffer chamber of the buffer portion, and is not directly sucked into the air pump.

In the process that sewage enters the buffer part, the water surface in the buffer part gradually rises, and the floating ball gradually rises in the guide part along with the rising of the water surface and approaches to the vent hole at the top end. When the buffer part is also filled with sewage, the floating ball rises to the uppermost end of the guide part, so that the vent hole at the lower end of the suction pipeline can be blocked, and the sewage is prevented from overflowing from the buffer part and being sucked into the air pump.

Example six

As shown in fig. 13, this embodiment differs from the fourth embodiment in that: the sewage temporary storage device 820 and the buffer part 830 are provided with isolation mechanisms consisting of floating balls 822 and guide parts 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 which can be blocked by the corresponding floating balls 822.

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

Normally, when the filtering device 600 discharges the sewage outwards, the floating ball 822 in the sewage temporary storage device 820 rises along with the water surface until the sewage temporary storage device 820 moves to the top of the sewage temporary storage device 820, the vent 832 can be plugged, and the sewage is prevented from overflowing from the sewage temporary storage device 820. However, when the floating ball 822 in the sewage temporary storage device 820 is accidentally stuck and cannot move, the air vent pipeline 831 and the sewage temporary storage device 820 are always kept in a mutually communicated state, and in the case that the filtering device 600 continuously discharges sewage, the sewage can enter the buffer portion 830 upwards along the air vent pipeline 831.

The floating ball 822 is also disposed in the buffer portion 830 in this embodiment, and if sewage continuously enters the buffer portion 830, the floating ball 822 in the buffer portion 830 gradually rises along with the water surface. When the buffer portion 830 is also filled with sewage, the float ball 822 may block the vent 832 on the top wall of the buffer portion 830, that is, end-capped the lower end of the suction pipe 811, so that sewage cannot overflow from the buffer portion 830 into the air pump 810.

In this embodiment, the floating ball 822 is disposed in both the sewage temporary storage device 820 and the buffer portion 830, which plays a role of double protection. Even if the floating ball 822 in the sewage temporary storage device 820 fails to cause sewage overflow, the floating ball 822 in the buffer part 830 can also block the vent 832 at the lower end of the suction pipeline 811 when the sewage fills the buffer part 830, thereby preventing the sewage from further overflowing the buffer part 830 into the air pump 810, and being safer and more reliable.

Example seven

As shown in fig. 4 and 14, this embodiment is further defined by the second embodiment, and the washing machine further includes a detergent dispensing device having a water inlet box 300 communicating with the water tub 100. The water outlet of the second chamber 532 of the recovery device 500 is communicated with the water inlet box 300, and the filtered clean water is introduced into the water inlet box 300, and then enters the water containing cylinder 100 through the water inlet box 300.

In the above scheme, after the recovery device 500 filters the collected sewage, the filtered clean water returns to the water containing drum 100 again through the water inlet box 300 for recycling, so that the detergent possibly existing in the water inlet box 300 can be scoured, and the utilization rate of the detergent is improved.

In this embodiment, the water inlet box 300 and the water outlet of the second chamber 532 of the recovery device 500 may be connected through a pipeline, and the filtered clean water is discharged from the water outlet, enters the water inlet box 300 through the pipeline, and enters the water containing drum 100 through the pipeline connecting the water inlet box 300 and the water containing drum 100 to participate in the washing process.

In a preferred embodiment of the present invention, the recovery device 500 is integrally disposed inside the water inlet box 300, after filtering the sewage discharged from the filtering device 600, the clean water flows out from the water outlet on the second chamber 532 directly into the water inlet box 300, and then enters the water containing cylinder 100 along the pipeline communicating the water inlet box 300 and the water containing cylinder 100.

Through the above structure, the space inside the water inlet box 300 can be fully utilized, and meanwhile, the pipeline is not required to be independently arranged to communicate the recovery device 500 with the water inlet box 300, so that the internal structure of the washing machine is more compact, and the installation space inside the washing machine is saved.

Example eight

As shown in fig. 2 and 3, the present embodiment provides a control method of the washing machine according to the first embodiment, which controls the air pump 810 to perform the suction operation a plurality of times when the filtering apparatus 600 needs to discharge the sewage, thereby completing the sewage discharge in the filtering apparatus 600 a plurality of times.

In one aspect of the present embodiment, the washing machine controls the sewage in the filtering apparatus 600 to be discharged in multiple times according to the amount of sewage discharged each time the air pump 810 performs the pumping action.

Specifically, a water level detecting device is provided on the sewage temporary storage device 820, and the water level inside the sewage temporary storage device 820 can be detected. The control method of the washing machine comprises the following steps:

a1, controlling the air pump 810 to execute a pumping action;

a2, the water level in the sewage temporary storage device 820 rises to a first set water level, and the air pump 810 is closed;

a3, the water level in the sewage temporary storage device 820 is reduced to the second set water level, and the process returns to the step A1.

Further, the washing machine is provided with a preset number of times N of the pumping action performed by the air pump 810 according to the maximum sewage amount in the filtering device 600 and the difference between the first set water level and the second set water level ₁ When the number of times of execution of the step A1 reaches N ₁ After the execution of step A2 is completed, the washing machine does not execute step A3 any more, and the drain process of the filter device 600 is ended.

In another aspect of the present embodiment, the washing machine controls the sewage in the filtering apparatus 600 to be discharged in multiple times according to the duration of each pumping action performed by the air pump 810.

Specifically, the control method of the washing machine includes:

B1, controlling the air pump 810 to execute the suction action;

b2, the duration of the pumping action performed by the air pump 810 reaches the first preset duration t ₁ The air pump 810 is turned off;

b3, closing the air pump 810 for a second preset time period t ₂ The process returns to step B1.

Further, the first preset time period t is continuously executed according to the maximum sewage amount in the filtering device 600 and the pumping action ₁ The amount of sewage that can be discharged, the washing machine is provided with a preset number of times N of the pumping action performed by the air pump 810 ₂ When the number of times of execution of the step B1 reaches N ₂ After the execution of step B2 is completed, the washing machine does not execute step B3 any more, and the drain process of the filter device 600 is ended.

Through the above two schemes, the washing machine can control the amount of sewage discharged from the filtering device 600 when the air pump 810 performs one pumping action, ensure that the amount of sewage does not exceed the maximum volume of the sewage temporary storage device 820, and wait for the sewage received in the sewage temporary storage device 820 to be discharged into the recycling device 500 after the one pumping action is performed, and then perform the next pumping action. Thus, the sewage temporary storage device 820 is prevented from overflowing during the sewage draining process of the filtering device 600, and the sewage overflows the sewage temporary storage device 820 to be sucked into the air pump 810.

In this embodiment, the volume of the sewage temporary storage device 820 may be smaller than that of the filtering device 600, so that the overflow of the sewage temporary storage device 820 can be avoided by controlling the amount of sewage discharged when the air pump 810 performs a pumping action, 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.

The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.

Claims

1. A washing machine, comprising:

a water holding cylinder;

Characterized by further comprising:

2. The washing machine as claimed in claim 1, wherein the pumping means is connected between the drain outlet of the filtering means and the recovery means through a pumping pipe, and pumping action is performed according to an instruction;

preferably, the suction device is an air pump.

3. The washing machine as claimed in claim 2, wherein the drain of the filtering device is communicated with a sewage temporary storage device having an inner cavity, the sewage temporary storage device is communicated with the recycling device, and the suction pipeline is communicated with the inner cavity of the sewage temporary storage device;

4. A washing machine as claimed in claim 3, wherein the water outlet of the sewage temporary storage device is higher than the sewage inlet of the recovery device, the suction device is turned off, and the sewage in the sewage temporary storage device is discharged into the recovery device under the action of gravity;

5. The washing machine as claimed in claim 3 or 4, wherein a buffer part is provided between the pumping device and the sewage temporary storage device, and a buffer chamber is provided inside the buffer part; the buffer chamber is communicated with the internal containing cavity of the sewage temporary storage device, the suction pipeline is connected with the buffer part, and the suction device and the buffer chamber are conducted.

6. The washing machine as claimed in any one of claims 2 to 5, wherein a drain control valve which can be opened/closed is provided between the drain of the filtering means and the suction inlet end of the suction line;

7. A washing machine as claimed in any one of claims 1 to 6 wherein the recovery means comprises:

a housing having a recovery chamber therein;

8. A control method of a washing machine as claimed in any one of claims 1 to 7, comprising: the suction device is controlled to execute suction action, and sewage in the filtering device is discharged through the sewage outlet and enters the recovery device under the action of pressure difference.

9. The control method of a washing machine according to claim 8, wherein a drain of the filtering device is communicated with a sewage temporary storage device having an inner cavity, the sewage temporary storage device is communicated with the recycling device, and the suction device is communicated with the sewage temporary storage device;

The control method comprises the following steps:

10. The control method of a washing machine as claimed in claim 9, wherein a drain control valve which can be opened/closed is provided between the filtering means and the sewage temporary storage means;

The step S1 specifically comprises the following steps: