CN115613306A

CN115613306A - Washing machine

Info

Publication number: CN115613306A
Application number: CN202110790971.0A
Authority: CN
Inventors: 刘凯; 许升; 吕艳芬
Original assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2023-01-17

Abstract

The invention belongs to the technical field of washing machines, and discloses a washing machine, which comprises: the water containing barrel and the filtering device are communicated with the water containing barrel, receive water in the water containing barrel for filtering and are provided with a sewage discharge outlet for discharging filtered impurities outwards; and the recovery device is communicated with the sewage discharge port of the filtering device and is used for collecting filtering impurities discharged by the filtering device. In the washing machine, the filtering device can discharge filtering impurities remained in the washing water after filtering, and the filtering impurities are collected by the recovery device, so that the filtering impurities cannot be directly discharged along with the drainage water flow of the washing machine, and the condition that fine thread scraps in the filtering impurities enter ecological circulation along with the drainage water flow and finally influence the ecological environment and the human health is avoided.

Description

Washing machine

Technical Field

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

Background

In the process of washing the clothes by the washing machine, the clothes generate thread scraps to fall off and mix into the 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, which may affect the washing effect of the laundry. For this reason, the conventional washing machine is provided with a filter for filtering lint, and washing water is circulated through the filter to remove lint from the washing water during washing.

The filter of the existing washing machine is generally arranged in the inner tub or the drainage pump for filtering thread scraps and impurities in the washing water. However, after the washing machine is used for a long time, the filter is filled with the thread scraps and the sundries, the filtering effect of the filter is affected, the blocking of a drain valve/a drain pump is caused, bacteria are easy to breed, the filter needs to be cleaned in time, otherwise, the washing water is polluted, the secondary pollution is caused to clothes, and the health of a user is affected. However, most washing machines require the user to remove the filter for manual cleaning, and are inconvenient to operate.

On the other hand, in the partial filter, due to consideration of blockage of the filter holes on the filter by the lint, the pore size of the filter holes is usually set to be larger, but fine lint on some clothes cannot be filtered due to the blockage, so that the lint is adhered to the clothes, and the user experience is influenced. Meanwhile, part of the thread scraps can be discharged along with water flow and enter ecological cycle, and the health of a human body is finally influenced.

Because there is above-mentioned problem, the filter that can carry out automatically cleaning has been proposed among the prior art, for example chinese patent with application number 201310612183.8 discloses a filter and washing machine, and this filter includes filter barrel and filter screen, water inlet, delivery port and drain have been seted up on the barrel, the filter screen install in the barrel to separate the inner chamber of filter barrel for inside appearance chamber and outside appearance chamber two parts, inside appearance chamber upper end with the water inlet is connected, the lower extreme with the drain is connected, outside appearance chamber with the delivery port meets, and sewage flows into inside appearance chamber from the water inlet, goes into outside appearance chamber and flows through the delivery port after filter screen filters, and filterable impurity by the drain is discharged.

However, in the above scheme, the sewage draining outlet is directly connected with the sewage draining pipeline leading to the outside of the washing machine, the filtered impurities are discharged out of the washing machine along with the drainage of the washing machine, and the problem that fine thread scraps and the like enter ecological circulation to threaten human health still exists.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a washing machine capable of collecting the filtering impurities discharged by a filtering device, wherein the filtering impurities are collected in a recovery device, so that the situation that the filtering impurities are directly discharged out of the washing machine along with the drainage water flow, and fine thread scraps in the filtering impurities enter into ecological circulation to finally influence the health of a human body is avoided.

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

a washing machine comprising:

a water-containing cylinder is arranged in the water tank,

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

and the recovery device is communicated with the sewage discharge port of the filtering device and is used for collecting filtering impurities discharged by the filtering 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;

a sewage discharge port of the filtering device is communicated with the first cavity, sewage carrying filtering impurities enters the first cavity, the sewage enters the second cavity after being filtered by the filtering component, and the filtering impurities are collected in the first cavity;

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

Furthermore, the washing machine also comprises a detergent box, and the detergent box is communicated with the water containing barrel through a pipeline; the second chamber is communicated with the detergent box, and the filtered clean water flows into the detergent box from the second chamber and then enters the water containing barrel.

Furthermore, the recovery device and the detergent box are arranged up and down, and a passage for filtered clean water to pass through is arranged between the recovery device and the detergent box;

preferably, the passage for filtered clean water to pass through is vertically extended.

Furthermore, the recovery device is arranged at one side of the detergent box in the horizontal direction, and a passage for filtered clean water to pass through is arranged between the recovery device and the detergent box;

preferably, the passage for the filtered clean water to pass through is horizontally extended;

preferably, the housing of the recovery device is integrally formed with the detergent box.

Further, the second chamber is communicated with a water containing barrel through a pipeline, and filtered clean water is sent into the water containing barrel;

preferably, the washing machine further comprises a detergent box, the recycling device and the detergent box are both arranged in the top area of the washing machine, the recycling device is arranged close to one side of the top area, and the detergent box is arranged close to the other side of the top area.

Furthermore, a first water return hole is formed in the water containing cylinder, and the second chamber is communicated to the first water return hole through a pipeline;

or a barrel opening of the water containing barrel is provided with a window pad, a second water return hole is formed in the window pad, and the second cavity is communicated to the second water return hole through a pipeline.

Further, the washing machine further comprises a main drain pipeline for draining water to the outside, and the second chamber is communicated with the main drain pipeline through a pipeline.

Furthermore, the washing machine also comprises a box body, and the water containing barrel and the filtering device are arranged in the box body; the recovery device is arranged on the box body in an insertable/extractable mode.

Furthermore, the washing machine also comprises a detergent box, and the detergent box is communicated with the water containing barrel through a pipeline; the recovery device is arranged in the detergent box and comprises a filtering component capable of filtering sewage carrying filtering impurities;

the sewage entering the recovery device is filtered by the filtering component, and the filtered clean water enters the water containing barrel through the detergent box.

After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.

According to the invention, the filtering device can receive and filter water in the water containing barrel, filtered impurities can be discharged from the sewage discharge outlet, and the filtering device is prevented from being blocked by the filtered impurities to influence the filtering effect. The drain communicates with recovery unit, and accessible recovery unit collects filter impurities of filter equipment exhaust, avoids filter impurities to directly discharge along with washing machine's drainage rivers, leads to the fine thread bits wherein to sneak into the condition of ecological cycle.

According to the invention, the recovery device is internally provided with the filtering component for filtering the sewage discharged by the filtering device, so that the filtering impurities are separated from the water, and a user can conveniently treat the filtering impurities. A set up the delivery port on the second cavity for collecting clear water after filtering, can discharge recovery unit with the clear water after filtering, can avoid recovery unit overflow to appear, and need not be great with the volume setting of recovery unit self.

In the invention, after the sewage discharged by the filtering device is filtered by the filtering component in the recovery device, the obtained clean water can be gathered into a water inlet pipeline of the washing machine through the detergent box, or the pipeline directly communicated with the water containing barrel is arranged, so that the filtered clean water can be introduced into the water containing barrel for reuse, and the water consumption of the washing machine is favorably saved.

According to the invention, the recovery device is integrated in the detergent box, so that the internal space of the detergent box is fully utilized, the filtered clean water can be recycled, and the installation space can be saved.

The following describes 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, 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 without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic structural diagram of a washing machine according to a first embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the invention at A in FIG. 1;

FIG. 3 is an enlarged view of the invention at B in FIG. 1

FIG. 4 is a schematic front view of a washing machine according to an embodiment of the present invention;

FIG. 5 is a schematic view of a washing machine according to a second embodiment of the present invention;

FIG. 6 is a schematic front view of a washing machine according to a second embodiment of the present invention;

FIG. 7 is a schematic structural view of a washing machine according to a third embodiment of the present invention;

FIG. 8 is a schematic front view of a washing machine according to a third embodiment of the present invention;

FIG. 9 is a schematic structural view of a filter device according to a sixth embodiment of the present invention;

FIG. 10 is a schematic view of section C-C of FIG. 9 of the present invention;

fig. 11 is a schematic view of a washing machine filtering washing water according to a seventh embodiment of the present invention;

fig. 12 is a schematic view illustrating a drainage state of the washing machine in accordance with the seventh embodiment of the present invention.

In the figure: 10. a box body; 100. a water containing cylinder; 110. a window pad; 111. a window pad water return port; 210. a drain line; 220. a circulation line; 230. a water return pipeline; 231. a return water control valve; 240. a sewage draining pipeline; 241. a blowdown control valve; 250. an outer discharge pipeline; 260. a drain pipe of the water containing barrel; 270. a switching device; 300. a detergent box; 400. a circulation pump; 500. a recovery device; 501. filtering impurities; 510. a housing; 520. a filter assembly; 531. a first chamber; 532. a second chamber;

600. a filtration device; 601. a first limiting surface; 602. a second limiting surface; 603. a third limiting surface; 604. a fourth limiting surface; 605. a fifth limiting surface; 606. a sixth limiting surface; 610. a filtering cavity; 6101. a water inlet; 6102. a filtered water outlet; 6103. a sewage draining outlet; 6104. an installation port; 611. a seal support portion; 612. a sleeve portion; 613. reinforcing ribs; 620. a filtering mechanism; 621. a water outlet joint; 622. a rotation support; 623. a filter screen support part; 624. a motor mounting portion; 625. a filter screen; 631. a first bearing; 632. a second bearing; 641. a first seal member; 642. a second seal member; 643. a third seal member; 650. a filter cavity flange; 651. a connecting portion; 652. a plug-in part; 653. a through opening; 660. a drive mechanism.

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

Detailed Description

In order to make the objects, 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 with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

As shown in fig. 1 to 4, the washing machine according to the present embodiment includes:

the water containing cylinder (100) is provided with a water inlet,

a filtering device 600 communicated with the water containing cylinder 100, receiving the water in the water containing cylinder 100 for filtering, and having a drain outlet 6103 for discharging the filtering impurities 501 outwards;

the recovery device 500 is connected to a drain outlet 6103 of the filter device 600, and collects the filtered impurities 501 discharged from the filter device 600.

In this embodiment, the washing machine is provided with a circulation filtering pipeline, two ends of which are respectively communicated with the water containing drum 100, and the filtering device 600 is arranged on the circulation filtering pipeline. The circulating filtering pipeline is also provided with a circulating pump 400, the circulating pump 400 drives water in the water containing barrel 100 to continuously circulate through the circulating filtering pipeline, and filtering impurities 501 such as thread scraps in the water 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 is improved.

The filter device 600 is provided with the drain outlet 6103, the filtered impurities 501 remained in the filter device 600 after filtering can be discharged from the drain outlet 6103, the filter device 600 does not need to be taken out by a user for manual cleaning, and the use is more convenient. The recycling device 500 is arranged on the washing machine and is communicated with the sewage outlet 6103 of the filtering device 600, and the filtered impurities 501 can enter the recycling device 500 to be collected after being discharged from the sewage outlet 6103, and can not enter the water flow and can be discharged out of the washing machine along with the water flow. Through the above manner, the fine thread scraps in the filtering impurities 501 are prevented from being discharged along with water flow and entering into ecological circulation, so that harm is brought to ecological environment and human health.

In a further aspect of this embodiment, the recycling apparatus 500 includes:

a housing 510 having a recovery chamber therein;

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

The sewage outlet 6103 of the filtering device 600 is communicated with the first chamber 531, the sewage carrying the filtering impurities 501 enters the first chamber 531, the sewage enters the second chamber 532 after being filtered by the filtering component 520, and the filtering impurities 501 are collected in the first chamber 531.

In the above solution, the recycling device 500 is provided with a filtering component 520 for filtering the sewage discharged from the filtering device 600 and separating the filtering impurities 501 from the water. The interior of the recycling device 500 is divided into a first chamber 531 and a second chamber 532 by the filter assembly 520, the filtering impurities 501 in the sewage are blocked by the filter assembly 520, so that the filtering impurities 501 are collected on the upper surface of the filter assembly 520 in the first chamber 531, and the filtered clean water is collected in the second chamber 532. The user can directly collect the processing to the filtration impurity 501 who separates, has avoided filtering impurity 501 to mix in aqueous, can't carry out the condition of effective processing to it.

In particular, the filter assembly 520 may be a frame horizontally disposed at a certain height within the recovery chamber and a filter screen laid on the frame. After the sewage carrying the filtering impurities 501 enters the first chamber 531, the water can enter the second chamber 532 through the filtering component 520, and the filtering impurities 501 are blocked by the filter screen and remain on the upper surface of the filtering component 520.

In this embodiment, the washing machine further includes a cabinet 10, and the water container 100 and the filter 600 are disposed in the cabinet 10. The recycling device 500 is provided on the case 10 to be inserted/extracted, and a user can extract the recycling device 500 from the case 10 to clean it.

Specifically, the housing 510 of the recycling apparatus 500 is provided on the cabinet 10 to be inserted/extracted, and the upper side of the housing 510 has an opening. When the user draws the housing 510 out of the cabinet 10, the filtered impurities 501 attached to the upper surface of the filter assembly 520 may be cleaned through the opening of the upper side of the housing 510. The filter assembly 520 is preferably removably attached 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.

In a preferred embodiment of this embodiment, a water outlet is disposed on the second chamber 532 for discharging filtered clean water. By arranging the water outlet on the second chamber 532, the clean water entering the second chamber 532 can be discharged out of the recovery device 500 in time, and the overflow phenomenon of the recovery device 500 when the amount of sewage discharged by the filtering device 600 is large is avoided. Otherwise, the capacity of the second chamber 532 needs to be increased, that is, the volume of the recycling device 500 needs to be increased, so that the recycling device occupies a large space inside the washing machine, which is not beneficial to the 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, and when the user cleans the recycling device 500, only the filtered impurities 501 on the filtering component 520 need to be cleaned, and the clean water in the second chamber 532 does not need to be manually poured out. When the filter assembly 520 is detachably installed in the housing 510, a user does not need to completely remove the housing 510 from the cabinet 10 of the washing machine even and only needs to remove the filter assembly 520 for cleaning, which is more convenient to operate.

In this embodiment, the washing machine further includes a detergent box 300, and the detergent box 300 is communicated with the water containing barrel 100 through a pipeline. The second chamber 532 is communicated with the detergent box 300, and the filtered clean water flows into the detergent box 300 from the second chamber 532 and then enters the water containing barrel 100.

In the above embodiment, the second chamber 532 is communicated with the detergent box 300, and the collected clean water can be introduced into the detergent box 300 and then sent into the water containing barrel 100 through a pipeline communicating the detergent box 300 and the water containing barrel 100. Since the sewage entering the recycling device 500 is filtered by the filtering assembly 520 in the recycling device 500, the filtering impurities 501 therein are removed, and the clean water without the filtering impurities 501 is collected in the second chamber 532. The water is sent into the water containing barrel 100 through the detergent box 300, so that the part of clean water can be recycled, the water inflow required by the continuous operation of the washing machine is reduced, and the purpose of saving the water consumption of the washing machine is realized.

In this embodiment, the filtering device 600 is disposed above the water container 100, and the recycling device 500 and the detergent box 300 are disposed in the top region of the washing machine cabinet 10.

Specifically, the recovery device 500 and the detergent box 300 in the present embodiment are vertically disposed in the cabinet 10, and a passage through which filtered clean water passes is provided therebetween. Preferably, the passage for filtered clean water to pass through is vertically extended.

In one solution of this embodiment, the detergent box 300 is disposed above the recycling device 500, and a power device is disposed on a path between the two for delivering the clean water in the second chamber 532 to the detergent box 300 along the path.

In another aspect of this embodiment, the detergent box is disposed below the recycling device, a passage between the detergent box and the recycling device extends vertically, and the clean water in the second chamber can enter the detergent box along the passage under the action of gravity.

In this embodiment, the recycling device 500 is disposed inside the washing machine and is communicated with the sewage outlet 6103 of the filtering device 600, and the sewage containing the filtered impurities 501 discharged from the filtering device 600 can be introduced into the recycling device 500 for collection, and the discharged water flow which is not merged into the washing machine is directly discharged. Thus, the situation that fine thread scraps in the filtering impurities 501 cause influence on the ecological environment and human health by entering ecological cycle to the drainage water flow is avoided. Set up filter assembly 520 in recovery unit 500 and filter the sewage of collecting to impurity 501 and separation of water will be filtered, the clearance of impurity 501 of being convenient for filter. Meanwhile, the recycling device 500 is communicated with the detergent box 300, and the filtered clean water is introduced into the water containing barrel 100 through the detergent box 300 for reuse, so that the water consumption of the washing machine is saved.

Example two

As shown in fig. 5 and 6, the present embodiment is different from the first embodiment in that: the recovery device 500 is horizontally disposed at one side of the detergent box 300, and a passage for filtered clean water to pass through is disposed therebetween.

Preferably, the passage through which the filtered clean water passes is horizontally extended, so that the filtered clean water in the recycling device 500 enters the detergent box 300 through the passage and then enters the water containing barrel 100.

In this embodiment, the detergent box 300 and the housing 510 of the recycling device 500 may be separately provided, and each of the detergent box 300 and the recycling device 500 may be independently inserted into/withdrawn from the cabinet 10 of the washing machine.

In another embodiment of the present invention, the detergent box 300 and the housing 510 of the recycling device 500 are integrally formed, preferably, they are integrally formed. The detergent box 300 is inserted into/withdrawn from the cabinet 10 of the washing machine in synchronization with the recovery device 500 by the user's operation.

In this embodiment, the detergent box 300 and the recycling device 500 are laterally arranged side by side, so that both can be drawn out from the cabinet 10 at the same time without mutual interference, that is, without one being shielded by the other to affect the user operation. The detergent box 300 and the housing 510 of the recycling device 500 are integrally formed, so that the user can conveniently draw or insert the detergent box 300 and the recycling device into the cabinet 10 at the same time, and the operation is simpler.

EXAMPLE III

As shown in fig. 7 and 8, the present embodiment is different from the first embodiment in that: the second chamber 532 is connected to the water container 100 through a pipeline (not shown), and the filtered clean water is directly fed into the water container 100.

In this embodiment, the recycling device 500 and the detergent box 300 are both disposed in the top region of the washing machine cabinet 10. As shown in fig. 8, the recovery device 500 and the detergent box 300 are respectively disposed at both sides of the top area of the cabinet 10 as viewed from the front side of the washing machine, i.e., the recovery device 500 is disposed near the left side of the top area and the detergent box 300 is disposed near the right side of the top area.

Since the distance between the recycling device 500 and the detergent box 300 is long, the second chamber 532 of the recycling device 500 is directly communicated with the water containing barrel 100 through a pipeline, and the filtered clean water is sent into the water containing barrel 100. Compared with the way of communicating the recovery device 500 and the detergent box 300 through the pipeline, the pipeline length is shorter and the structure is simpler.

In the specific scheme of this embodiment, a first water return hole is formed in the water containing cylinder 100, and the filtered clean water in the second chamber 532 enters the water containing cylinder 100 through the first water return hole.

Or, a window pad 110 is disposed at a cylinder opening of the water containing cylinder 100, a second water return hole is formed in the window pad 110, and the filtered clean water in the second chamber 532 enters the water containing cylinder 100 through the second water return hole.

In this embodiment, the filtering device 600 is communicated with the water container 100 through the water return pipe 230, and is used for returning the water filtered by the filtering device 600 to the water container 100. The window pad 110 at the opening of the water container 100 is provided with a window pad water return opening 111 communicated with the water container 100, and the water outlet end of the water return pipeline 230 is specifically connected to the window pad water return opening 111.

In another embodiment of the present invention, a pipeline connecting the second chamber 532 of the recycling device 500 and the water containing barrel 100 may have a water outlet end connected to the water return pipeline 230, and the clean water in the second chamber 532 is sent to the water containing barrel 100 through the water return pipeline 230.

In the above solution, in order to realize the circulation filtration of water in the water container 100, the window pad 110 has a window pad water return port 111 for receiving filtered return water. The pipeline connected with the second chamber 532 is directly connected to the water return pipeline 230, the existing pipeline structure and the window mat water return port 111 can be utilized, the purpose of guiding the clean water in the recovery device 500 into the water containing cylinder 100 is achieved, the newly added pipeline structure is reduced, an opening is not needed to be formed in the water containing cylinder 100, and the structure is simpler.

In this embodiment, a return water control valve 231 for controlling the on/off of the return pipe 230 is further disposed on the return pipe 230. When the filter device 600 discharges water to the recovery device 500, the return control valve 231 is closed, so that the water in the filter device 600 is completely discharged into the recovery device 500 and is not filtered by the filter device 600 and then enters the water containing barrel 100 along the return pipe 230, and the discharge efficiency of the filtered impurities 501 in the filter device 600 is ensured.

A pipe connecting the second chamber 532 of the recovery device 500 with the water containing cartridge 100 has its water outlet end connected to the return pipe 230 at a position downstream of the return control valve 231 so that the closing of the return control valve 231 blocks only the water from being discharged from the filter device 600 to the return pipe 230 without blocking the filtered clean water in the recovery device 500 from entering the water containing cartridge 100 along the return pipe 230.

In this embodiment, the detergent box 300 and the recycling device 500 are respectively disposed at two sides of the cabinet 10, and the filtered clean water in the recycling device 500 is directly fed into the water container 100 through a pipeline instead of passing through the detergent box 300, so as to simplify the internal pipeline structure of the washing machine as much as possible.

Example four

The present embodiment is different from the first embodiment in that: the washing machine further comprises a main drainage pipeline for draining water to the outside, and the second chamber is communicated with the main drainage pipeline through a pipeline.

In this embodiment, through the main drainage pipeline of pipeline intercommunication second chamber and outside drainage, can be with the water in the second chamber through main drainage pipeline directly discharge washing machine. Because the sewage that gets into recovery unit filters the back through filtering component, wherein filter impurity adheres to filtering component surface, and what get into the second cavity is the clear water that does not contain filter impurity, directly discharges it and can not cause the problem that fine thread scraps got into ecological cycle. Meanwhile, the problem of overflow of the recovery device can be avoided, and the operation that a user manually pours out water stored in the second chamber is omitted.

EXAMPLE five

The present embodiment is different from the first embodiment in that: the recovery device is arranged in the detergent box and comprises a filtering component which can filter sewage carrying filtering impurities.

Specifically, a filter assembly may be additionally provided in the detergent box, the filter assembly dividing an inner space of the detergent box into an upper space and a lower space. The pipeline for communicating the detergent box and the water containing barrel is communicated with the lower space of the detergent box, and the containing cavity of the detergent is also positioned in the lower space. The sewage draining port of the filtering device is communicated with the upper space, sewage drained by the filtering device enters the upper space, then when passing through the filtering component, filtering impurities are attached to the surface of the filtering component, and clean water enters the lower space through the filtering component and then can be led into the water containing barrel.

In this embodiment, recovery unit sets up inside the detergent box, make full use of the inside space of detergent box to save the inside installation space of washing machine, also can realize collecting and filtering impurity, and the mesh of recycling to the clear water after the filtration.

EXAMPLE six

As shown in fig. 1 and fig. 2, this embodiment is a further limitation of the first embodiment, and the filter device 600 specifically includes:

a filtering cavity 610, on which a water inlet 6101, a filtered water outlet 6102 and a sewage outlet 6103 are arranged;

and the filtering mechanism 620 is arranged in the filtering cavity 610, divides the inside of the filtering cavity 610 into an inner cavity and an outer cavity, and is provided with a water outlet connector 621 communicated with the filtered water outlet 6102.

When the filtering device 600 filters water, the water to be filtered enters the outer cavity of the filtering cavity 610 through the water inlet 6101, enters the inner cavity after being filtered by the filtering mechanism 620, then flows out through the water outlet connector 621, and is discharged out of the filtering device 600 through the filtered water outlet 6102, and the filtered impurities filtered out of the water are attached to the outer surface of the filtering mechanism 620. When the interior of the filtering device 600 needs to be cleaned, water can be introduced into the filtering cavity 610 through the water inlet 6101, and the filtering impurities attached to the surface of the filtering mechanism 620 are peeled off and then melted into the water flow in the outer cavity, and are discharged through the sewage outlet 6103 together with the water flow.

Wherein, the filtered water outlet 6102 is connected with the return pipe 230 to communicate with the water barrel 100, a return control valve 231 is arranged thereon, the sewage outlet 6103 is connected with the sewage pipe 240 to communicate with the recovery device 500, and a sewage control valve 241 is arranged thereon. By controlling the open/close states of the return water control valve 231 and the drain control valve 241, the on/off states of the return water pipe 230 and the drain pipe 240 can be controlled, which is equivalent to controlling the opening and closing of the filtered water outlet 6102 and the drain outlet 6103 of the filtering apparatus 600. Thereby, the water outlet direction of the filter device 600 can be controlled, and the water entering the filter device 600 is ensured to flow out from the corresponding outlet, so as to realize the circular filtration of the washing water and the discharge of the filtered impurities.

In a further aspect of this embodiment, the filtering mechanism 620 is rotatably installed inside the filtering cavity 610, and the filtering apparatus 600 further includes a driving mechanism 660 connected to the filtering mechanism 620 for driving the filtering mechanism 620 to rotate in the filtering cavity 610. The drive mechanism 660 may be a motor.

In this embodiment, when the filter device 600 needs to be cleaned, the driving mechanism 660 drives the filter mechanism 620 to rotate, and the filtered impurities attached to the surface of the filter mechanism 620 can fall off under the action of centrifugal force, so as to be discharged through the sewage outlet 6103. In the case of water stored in the filtering chamber 610, the rotation of the filtering mechanism 620 may also agitate the water in the filtering chamber 610, and the resulting agitated water flow may further act on the surface of the filtering mechanism 620 to assist in stripping off the filtered impurities.

Adnexed filtering impurity peels off from filtering mechanism 620 surface under centrifugal force and the dual function of surging rivers, has realized filter device 600's automatic clearance in this embodiment, need not the user and unloads filter device 600 and carry out manual clearance, and filtering impurity's clearance rate is high simultaneously, and the clearance is effectual.

Further, as shown in fig. 9 and 10, the outer periphery of filtered water outlet 6102 on filter cavity 610 extends outward of filter cavity 610 to form a sealing support 611. The water outlet connector 621 is disposed at the left end of the filter mechanism 620, inserted into the sealing support portion 611, and rotatably and sealingly connected to the sealing support portion 611.

The filter device 600 further includes:

a first bearing 631 sleeved on the water outlet joint 621;

the first sealing member 641 is disposed on one side of the first bearing 631 facing the inside of the filter chamber 610, and seals the gap between the water outlet 621 and the sealing support portion 611.

In detail, the filter mechanism 620 includes a filter screen holder and a filter screen 625, wherein the filter screen holder includes:

a filter screen support 623 located inside the filter cavity 610, wherein the filter screen 625 covers the surface of the filter screen support 623;

a water outlet joint 621 which is arranged at the left end of the filter screen supporting portion 623 and is rotatably inserted into the sealing supporting portion 611;

and a rotating support 622 arranged at the right end of the filter screen support 623 and rotatably connected with the filter chamber 610.

In the above scheme, the first bearing 631 is disposed between the water outlet connector 621 and the sealing support portion 611 to support the water outlet connector 621, so that the water outlet connector 621 can rotate more smoothly in the sealing support portion 611, and meanwhile, the structure is stable, and the stable rotation of the filtering mechanism 620 in the filtering cavity 610 can be ensured. The first sealing element 641 is arranged on the right side of the first bearing 631, so that the washing water in the filtering cavity 610 can not enter the gap between the water outlet joint 621 and the sealing support part 611, the first bearing 631 is prevented from contacting with the water, the failure of the first bearing 631 is avoided, and the effect of the first bearing 631 is ensured. Meanwhile, the first sealing member 641 also prevents the unfiltered washing water from flowing out of the filtered water outlet 6102 through the sealing support 611, which may affect the thread waste removing efficiency of the filter apparatus 600.

In a specific scheme of this embodiment, the first sealing element 641 is sleeved on the water outlet 621, an inner wall of the first sealing element 641 is connected to an outer wall of the water outlet 621 in a sealing manner, and an outer wall of the first sealing element 641 is connected to an inner wall of the sealing support portion 611 in a rotatable sealing manner.

In a further aspect of this embodiment, the filter device 600 further includes a second sealing element 642, where the second sealing element 642 is disposed on a side of the first bearing 631 facing away from the inside of the filter cavity 610, and blocks a gap between the water outlet 621 and the sealing support 611.

Specifically, the second sealing element 642 is sleeved on the water outlet connector 621, an inner wall of the second sealing element 642 is in sealing connection with an outer wall of the water outlet connector 621, and an outer wall of the second sealing element 642 is in rotatable sealing connection with an inner wall of the sealing support portion 611.

In the above solution, the left side of the first bearing 631 is further provided with a second sealing element 642, and water flowing out through the water outlet joint 621 can be blocked by the second sealing element 642 and does not contact the first bearing 631. First bearing 631 is located between first sealing member 641 and second sealing member 642, has guaranteed to the at utmost that first bearing 631's installation environment is anhydrous, has avoided first bearing 631 to meet the water and has rusted, influences the pivoted smoothness nature of filter mechanism 620.

In a further aspect of this embodiment, the inner wall of the sealing support portion 611 has a stepped structure, and a first limiting surface 601, a second limiting surface 602, and a third limiting surface 603, which have an annular structure and gradually decrease in inner diameter, are sequentially formed from one end of the sealing support portion 611 to the outside of the filtering cavity 610.

The surface of the first sealing member 641 facing the outside of the filter chamber 610 abuts against the first limit surface 601, the surface of the first bearing 631 facing the outside of the filter chamber 610 abuts against the second limit surface 602, and the surface of the second sealing member 642 facing the outside of the filter chamber 610 abuts against the third limit surface 603.

In the above scheme, a plurality of vertical annular limiting surfaces are formed on the inner wall of the sealing support portion 611 of the stepped structure and are respectively abutted against the respective left side surfaces of the first sealing element 641, the first bearing 631 and the second sealing element 642, so that the movement of the three in the axial direction of the water outlet joint 621 can be limited, and the looseness of a matching structure between the water outlet joint 621 and the sealing support portion 611 in the rotation process of the filter mechanism 620 is prevented.

In a preferred embodiment of this embodiment, an outer diameter of one end of the water outlet joint 621 close to the outside of the filtering cavity 610 is smaller than an outer diameter of the other end, and a fourth limiting surface 604 having an annular structure and perpendicular to an axis of the water outlet joint 621 is formed on an outer wall of the water outlet joint 621. The surface of the first bearing 631 facing the inside of the filter chamber 610 abuts against the fourth limiting surface 604.

By setting the outer diameter of the left end of the water outlet joint 621 smaller than that of the right end, a fourth limiting surface 604 facing the left side is formed at the abrupt change position of the outer diameter and abuts against the right side surface of the first bearing 631. Therefore, the first bearing 631 has a limiting structure on both sides, and the structure is more stable.

In this embodiment, one end of the sealing support portion 611 far away from the filtering cavity 610, that is, the left end of the sealing support portion 611 is connected to the filtering cavity flange 650, and the middle of the filtering cavity flange 650 is provided with a through hole 653 communicated with the water outlet connector 621. The outer periphery of the through-hole 653 extends away from the seal support 611 to form a connecting portion 651.

Preferably, the surface of the filter cavity flange 650 facing the side of the sealing support 611 has a raised socket 652, and the socket 652 is inserted into the opening at the left end of the sealing support 611.

In the above solution, the left end of the sealing support portion 611 is connected to the filter flange 650, and a connection portion 651 is formed on the filter flange 650, wherein the outer diameter of the connection portion 651 is smaller than the outer diameter of the sealing support portion 611, and the inner diameter of the connection portion 651 is preferably equal to the inner diameter of the water outlet connector 621. When the filter device 600 is installed in the washing machine, it is connected to the pipe through the connection portion 651, so that the washing water without thread scraps after filtering can be discharged, and the installation is easier than a mode in which the pipe is directly connected to the left end of the sealing support portion 611.

The right side of filter cavity flange 650 has a plug portion 652 inserted into the left end opening of seal support 611 for positioning filter cavity flange 650 when assembled with seal support 611. The periphery of the filter cavity flange 650 and the periphery of the sealing support portion 611 are respectively provided with a plurality of fixing portions, and the fixing of the filter cavity flange 650 and the sealing support portion 611 is realized by passing screws through the fixing portions.

In a further aspect of this embodiment, a rotation axis of the rotation support 622 at the right end of the filter mechanism 620 extends toward the outside of the filter cavity 610, and the filter cavity 610 is provided with an installation opening 6104 for the rotation support 622 to pass through. The rotation support 622 is rotatably and hermetically connected to the mounting opening 6104.

In this embodiment, since the filtering mechanism 620 is driven by the driving mechanism 660 to rotate, the driving mechanism 660 is disposed outside the filtering chamber 610 to avoid contact with the washing water. To this end, a rotation support 622 is protruded from the right end of the filtering chamber 610, and a motor mounting portion 624 is provided at the right end of the rotation support 622 for coupling with a driving mechanism 660, such as a motor.

Further, the outer circumference of the mounting opening 6104 extends along the axis of the rotation support 622 to the outside of the filtering cavity 610 to form a sleeve portion 612, and the rotation support 622 is sleeved with a third sealing member 643. An inner wall of the third seal 643 is sealingly connected with an outer wall of the rotation support 622, and an outer wall of the third seal 643 is rotatably sealingly connected with an inner wall of the sleeve portion 612.

A second bearing 632 is further disposed between the sleeve portion 612 and the rotation support portion 622, and the second bearing 632 is disposed on the rotation support portion 622 and located at a side of the third sealing element 643 facing the outside of the filtering cavity 610.

In the above-described embodiment, the third seal 643 is provided to prevent water in the filtering chamber 610 from leaking out of the mounting opening 6104, and the second bearing 632 is provided to support the rotation support 622, so that the relative rotation between the rotation support 622 and the sleeve portion 612 can be more smoothly ensured. The second bearing 632 is disposed on the right side of the third seal 643 and does not contact water in the filter chamber 610, thereby preventing failure.

In a preferred embodiment of the present invention, the sleeve portion 612 has an inner diameter smaller at one end thereof adjacent to the outside of the filter chamber 610 than at the other end thereof, and a fifth stopper surface 605 having an annular structure and perpendicular to the axis of the rotation support 622 is formed on the inner wall of the sleeve portion 612. The surface of the third seal 643 facing the outside of the filter chamber 610 abuts against the fifth stopper surface 605.

The outer diameter of the end of the rotating support 622 close to the outside of the filtering cavity 610 is smaller than that of the other end, and a sixth limiting surface 606 having an annular structure and perpendicular to the axis of the rotating support 622 is formed on the outer wall of the rotating support 622. The surface of the second bearing 632 facing the inside of the filter chamber 610 abuts against the sixth stopper surface 606.

In the above configuration, the sleeve portion 612 has a smaller inner diameter at the right end than at the left end, and a fifth stopper surface 605 facing the left side is formed at the abrupt change of the inner diameter thereof, and abuts against the right side surface of the third seal 643. The right end of the rotation support 622 has an outer diameter smaller than that of the left end, and a sixth stopper 606 facing the right side is formed at a sudden change of the outer diameter and abuts against the left side surface of the second bearing 632. The above structure restricts the movement of the third seal 643 and the second bearing 632 in the axial direction of the rotation support portion 622, and the structure is stable.

In this embodiment, the first seal 641, the second seal 642 and the third seal 643 are oil seals, and the right wall and the peripheral wall of the filtering cavity 610 are provided separately. The filter mechanism 620, the first sealing element 641, the second sealing element 642 and the first bearing 631 at the left end thereof are integrally installed inside the filter chamber 610, the third sealing element 643 and the second bearing 632 are installed at the right end thereof, and finally the right wall of the filter chamber 610 is fastened with the peripheral side wall thereof.

In this embodiment, the cross-sectional area of the middle area of the filter screen support portion 623 is fixed, and the left and right ends of the filter screen support portion 623 have tapered structures, so that the local surface of the filter screen 625 is inclined, which is beneficial to falling off of the attached thread scraps.

In this embodiment, the water inlet 6101 and the drainage outlet 6103 on the filtering cavity 610 are oriented perpendicular to the axial direction of the filtering mechanism 620.

Preferably, the filtering cavity 610 has a cylindrical structure, the water inlet 6101 is disposed near the right end of the filtering cavity 610, the drain 6103 is disposed near the left end of the filtering cavity 610, and the positions of the water inlet 6101 and the drain 6103 are symmetrical in the circumferential direction of the filtering cavity 610.

In the above-described embodiment, the position of the water inlet 6101 is as far away from the water outlet connector 621 as possible, so that the area of the filter screen 625 can be fully utilized. The water inlet 6101 and the sewage outlet 6103 are arranged up and down, and staggered in the axial direction of the filtering cavity 610, which is beneficial to fully discharging the sewage after the filtering cavity 610 is cleaned with the filtering apparatus 600.

In a further aspect of this embodiment, the outer wall of the sealing support 611 is provided with a rib 613 extending along the radial direction of the sealing support 611, and the rib 613 is connected to the surface of the filtering cavity 610 where the filtered water outlet 6102 is located.

Since the seal support portion 611 extends from the left end surface of the filter chamber 610 by a certain length, the reinforcing ribs 613 support the peripheral side wall thereof from the outside, and the strength of the seal support portion 611 is ensured.

In this embodiment, a rotatable filtering mechanism 620 is disposed in the filtering cavity 610 of the filtering apparatus 600, the washing water to be filtered enters the filtering cavity 610, and after being filtered by the filtering mechanism 620, the filtered impurities are attached to the outer surface of the filtering mechanism 620. Through the rotation of drive filter mechanism 620, can make the thread scraps break away from, discharge by drain 6103 along with the water in filtering cavity 610, realized filter 600's self-cleaning function, need not user's manual clearance.

The two ends of the filtering mechanism 620 are respectively provided with a first bearing 631 and a second bearing 632 for supporting, so as to ensure that the filtering mechanism 620 smoothly and stably rotates in the filtering cavity 610. Meanwhile, the first, second and

third seals

641, 642, 643 prevent the first and

second bearings

631, 632 from contacting water, and avoid the failure of the two.

EXAMPLE seven

As shown in fig. 1 to fig. 3, this embodiment is a further limitation of the sixth embodiment, and the circulation filtering pipeline specifically includes:

the water containing barrel drain pipe 260 is connected with the water containing barrel 100 and the water inlet end of the circulating pump 400;

a drain line 210 having one end connected to the water outlet end of the circulation pump 400;

a circulation line 220 having one end connected to the drain line 210 and the other end connected to a water inlet 6101 of the filter device 600;

one end of the return pipe 230 is connected to the filtered water outlet 6102 of the filter device 600, and the other end thereof is communicated with the water container 100, so as to deliver the filtered water to the water container 100.

Specifically, the filtering device 600 is disposed above the water container 100, the circulation pipeline 220 and the water return pipeline 230 are also disposed above the water container 100, and a water outlet end of the water return pipeline 230 is connected to the window mat 110, so as to communicate with the water container 100. The circulation pump 400 is disposed under the water container 100, and is communicated with the water container 100 through the water container drain pipe 260, and the drain line 210 delivers the washing water from bottom to top under the action of the circulation pump 400.

In a further aspect of this embodiment, the other end of the drain line 210 communicates with the circulation line 220 through a switching device 270, and the switching device 270 includes:

a water inlet connected to the water outlet end of the drain line 210;

a first water outlet connected to the circulation line 220;

a second water outlet connected to an external discharge pipe 250 for discharging water to the outside of the washing machine;

and the switching mechanism controls one of the first water outlet and the second water outlet to be communicated with the water inlet.

In the above scheme, the switching device 270 is arranged to alternatively conduct both the circulation line 220 and the outer discharge line 250 with the drain line 210. As shown in fig. 11, at this time, the switching mechanism switches on the water inlet and the first water outlet, that is, the water discharge pipeline 210 is communicated with the circulation pipeline 220, the circulation filtering loop is switched on, and the washing water continuously circulates and flows in the circulation filtering loop for filtering under the action of the circulation pump 400. As shown in fig. 12, at this time, the switching mechanism switches on the water inlet and the second water outlet, that is, the drain pipeline 210 is communicated with the external discharge pipeline 250, and under the action of the circulation pump 400, the washing water in the water containing drum 100 is pumped out through the water containing drum drain pipe 260, and then is finally conveyed to the external discharge pipeline 250 through the drain pipeline 210 to be discharged out of the washing machine.

Under the above-mentioned mode of setting, washing machine is inside need not to set up mutually independent loop filter pipeline and drain line respectively, also need not to set up drain pump and circulating pump respectively simultaneously, only through the intercommunication mode of auto-change device 270 action in order to change the pipeline, just can realize two kinds of functions of outside drainage and loop filter washing water respectively through same circulating pump 400. Therefore, the pipeline connecting structure in the washing machine is simplified, the space occupied by the pipeline is saved, and meanwhile, the production cost can be reduced by only arranging one circulating pump 400.

The embodiment also provides a control method of the washing machine.

The washing machine performs a circulation filtering operation during washing and rinsing, including:

the blowdown control valve 241 is closed, meanwhile, the return control valve 231 is opened to conduct the return pipe 230, and the switching device 270 is communicated with the drain pipe 210 and the circulation pipe 220;

the circulation pump 400 is started, water in the water containing barrel 100 is introduced into the filtering device 600, filtered impurities 501 are removed through the filtering device 600, and then the water returns to the water containing barrel 100 again.

In this embodiment, the washing machine performs the circulation filtering operation in both the washing stage and the one-time to multi-time rinsing stage of the washing program. Specifically, the circulation pump 400 is turned on after the washing stage and each rinsing stage start to feed water for a certain period of time.

In detail, after the washing machine starts to supply water, the water level in the water tub 100 is detected, and when the water level reaches a preset water level, the circulation pump 400 is turned on. Thus, the water in the water container 100 is prevented from being too small, and the circulating pump 400 sucks air to generate operation noise.

In a further aspect of this embodiment, in order to sufficiently discharge the contaminated water in the filtering apparatus 600, the control method of the washing machine includes:

starting the circulating pump 400, conducting the circulating filtering pipeline, and circularly filtering and rinsing by the washing machine;

after rinsing, the circulation pump 400 is turned off;

the driving mechanism 660 is started to drive the filtering mechanism 620 to rotate in the filtering cavity 610;

when the first set condition is reached, the circulation pump 400 is started, and the blowdown control valve 241 is opened to conduct the blowdown pipeline 240;

and when the second set condition is reached, the circulating filtration pipeline is cut off.

Preferably, after the first set condition is reached, the driving mechanism 660 remains open, and the filtering mechanism 620 is driven to rotate continuously.

In this embodiment, the conducting circulation filtering pipeline includes: the switching device 270 conducts the filter device 600 and the water outlet side of the circulation pump 400, and opens the return control valve 231 to conduct the return pipe 230. The cut-off circulating filter pipeline comprises: the switching device 270 connects the outer discharge pipe 250 and the water outlet of the circulation pump 400.

It will be appreciated that the shut-off of the recirculation filter circuit can also be achieved by turning off the recirculation pump 400.

In the above scheme, the washing machine performs the circulation filtration of the rinsing water during the rinsing process, and the filtration device 600 and the circulation filtration pipeline are always filled with the rinsing water.

As shown in fig. 10, after the circulation pump 400 is turned off after rinsing is finished, the water in the drain line 210 and the circulation line 220 flows back downward under gravity, and at most, the water level in the drain line 210 is level with the water level in the water container 100, and the line between the water level and the filter 600 is filled with air. However, the filter device 600 is lower than the circulation line 220, and water therein does not flow back through the circulation line 220. The circulating pump 400 is closed and the return water control valve 231 is also closed, and at this time, the drain control valve 241 is in a closed state, and water in the filtering apparatus 600 is retained in the filtering chamber 610 and is not discharged to the outside.

As shown in fig. 11, after the driving mechanism 660 is turned on, the filtering mechanism 620 is driven to rotate at a high speed, so that the filtered impurities such as thread scraps attached to the surface are peeled off from the surface of the filtering mechanism 620 under the action of centrifugal force. At this time, since the backwater control valve 231 and the blowdown control valve 241 are both in a closed state, water in the filter cavity 610 does not flow out, the filter mechanism 620 rotating at a high speed can also stir water flow in the filter cavity 610, and the formed stirred water flow causes a certain impact force to the surface of the filter mechanism 620, so that lint can also fall off. Lint that is stripped from the surface of the filter mechanism 620 is dissolved into the water in the filter chamber 610.

As shown in fig. 12, when the circulation pump 400 is turned on, the drain control valve 241 is also opened to conduct the drain line 240, so that the sewage in the filtering apparatus 600 can be discharged from the drain outlet 6103. The circulation pump 400 is opened to press the air in the drainage pipeline 210 and the circulation pipeline 220 into the filtering device 600, so that the sewage carrying the thread scraps in the filtering device 600 is completely discharged through the sewage outlet 6103 under the air pressure, thereby avoiding the existence of sewage residue in the filtering device 600 and achieving good cleaning effect on the filtering device 600. The drain control valve 241 is opened while the circulation pump 400 is turned on, so that pressure generated when air is introduced into the filtering apparatus 600 is ensured, and thus, sufficient discharge of sewage in the filtering apparatus 600 can be ensured.

In order to prevent the water in the water container 100 from entering the filtering device 600 through the circulation pipeline 220 after the sewage in the filtering device 600 is drained, the washing machine is preset with a second set condition, and when the second set condition is reached, the circulation filtering pipeline is cut off, and the water in the water container 100 is stopped from being conveyed to the filtering device 600.

In a specific aspect of this embodiment, the first setting condition may be that the circulation pump 400 is turned off for a first setting time t ₁ The second setting condition may be that the circulation pump 400 is turned on for a second setting time t ₂ 。

In the above scheme, the first set time t ₁ And a second set time t ₂ The specific value of (a) can be obtained in advance through a large number of experiments and directly written into a control program of the washing machine.

Specifically, the first set time t ₁ Is about the maximum time period required for the water level in the drain pipeline 210 to start to fall until stop, and the second set time t ₂ Is about the shortest time period required for the water level in the drain line 210 to rise to near the top end of the drain line 210 after the circulation pump 400 is turned on. So, can guarantee that during circulating pump 400 closed, can get into a larger amount of air in the pipeline, simultaneously, effectively avoid circulating pump 400 to open the back condition that has water to get into filter equipment 600 again.

In another aspect of this embodiment, the water level height may also be used as the first setting condition and the second setting condition. Specifically, the first setting condition is: in the pipe between the circulation pump 400 and the filtering apparatus 600, the water level reaches the first set value H ₁ . The second setting condition is as follows: the water level reaches the second set value H in the pipe between the circulation pump 400 and the filtering apparatus 600 ₂ . Wherein H ₁ <H ₂ 。

In this embodiment, the water level is specifically the height of the water level in the drain pipeline 210, and a water level detection device may be disposed in the drain pipeline 210 of the washing machine to detect the water level in the drain pipeline 210.

In the above-described aspect, the first set value H ₁ Is greater than and as close as possible to the maximum water level height of the washing machine to ensure that the water level in the drain line 210 can be lowered to the first set value H after the circulation pump 400 is turned off ₁ 。

The water level received from the washing machine into the drain line 210 rises to the second set value H ₂ Until the switching device 270 switches on the drain line 210 and the outer discharge line 250, there is generally a time difference therebetween. In order to prevent water from entering the filter 600 after the circulation pump 400 is turned on due to a response delay, the second setting value H ₂ A certain difference Δ H is required between the value of (a) and the water level corresponding to the top end of the drain line 210. The specific value of the difference value delta H can be obtained through a large number of experiments carried out in advance, so that the fact that the water level received by the washing machine reaches the second set value H is guaranteed ₂ After the signal is received, the switching device 270 is controlled to complete the switching of the water circuit with sufficient response time.

In a further scheme of this embodiment, if the washing machine determines that the current operation process is the last rinsing stage in the washing program, the circulation pump 400 is turned off after the rinsing is finished, and the circulation pump 400 is turned on after the first set condition is reached.

If the washing machine judges that the current running process is not the last rinsing stage in the washing program, the following operations are executed after the rinsing is finished:

the circulation pump 400 maintains the operation state;

when the third set condition is reached, the circulating filtering pipeline is cut off;

in the above scheme, for the intermediate rinsing stage, since the washing machine needs to continue to operate after the washing machine, that is, the rinsing water circulates through the filtering device 600 for filtering, the sewage carrying the lint in the filtering device 600 may not be completely discharged, and only the lint attached to the surface of the filtering mechanism 620 needs to be removed.

As shown in fig. 9, after the rinsing is finished, the return control valve 231 is closed, the drain control valve 241 is opened, the circulation pump 400 keeps operating, the water in the water containing barrel 100 is continuously conveyed to the filtering device 600 by the circulation pump 400, the interior of the filtering device 600 is flushed, and the flushed sewage is discharged into the drain pipeline 240 through the drain outlet 6103.

In this embodiment, the third setting condition may be that the rinsing is finished for a third preset time t ₃ The values of which are obtained in advance through experiments and written into a control program, so as to ensure that lint attached to the surface of the filter mechanism 620 can be basically removed.

Alternatively, the water level in the water bucket 100 may drop to a predetermined value Δ H ₁ When the circulation filtering pipeline is cut off, that is, the switching device 270 is controlled to connect the drainage pipeline 210 and the external drainage pipeline 250, the circulation pump 400 continues to operate, and the residual water in the water containing barrel 100 is drained out of the washing machine.

In the preferred scheme of this embodiment, after rinsing, start actuating mechanism 660, drive filter mechanism 620 and rotate at a high speed in filtering cavity 610, can stir the water in filtering cavity 610, make the adnexed thread scraps peel off from filter mechanism 620 surface under the dual function of centrifugal force and the water current of stirring, melt the aquatic in filtering cavity 610, discharge filtering cavity 610 by drain 6103 again, the cleaning efficiency of thread scraps is high.

In this embodiment, the washing machine performs the operation of turning off the circulation pump 400 and then turning on the circulation pump 400 only when the last rinsing is finished, so as to completely drain the sewage in the filtering apparatus 600. And when the middle rinsing is finished, the circulating pump 400 keeps the running state, so that the phenomenon that the service life of the circulating pump 400 is influenced because the circulating pump 400 is frequently opened and closed in the running process of the washing machine is avoided.

In this embodiment, the washing machine also cleans the filtering device 600 after the washing is finished, and the specific control method is as follows:

starting the circulating pump 400, conducting the water outlet end of the circulating pump 400 and the filtering device 600 by the switching device 270, opening the water return control valve 231, and carrying out circulating filtering washing by the washing machine;

after washing, the circulating pump 400 keeps running, the backwater control valve 231 is closed, and the blowdown control valve 241 is opened;

when the fourth set condition is reached, the switching device 270 connects the water outlet end of the circulation pump 400 and the external discharge pipeline 250.

Wherein, the fourth setting condition may be that the washing end reaches a fourth preset time t ₄ Or the water level falling height in the water container 100 can reach the preset value delta H ₂ 。

After washing, the circulation filtering rinsing is required in the subsequent process of the washing program, and similar to the intermediate rinsing, the sewage in the filtering device 600 is not required to be completely discharged, and the circulation pump 400 can be kept in a running state without being turned off.

In this embodiment, the water in the water container 100 is driven by the circulating pump 400 to circularly flow through the filtering device 600 during the washing and rinsing processes of the washing machine, so that the thread scraps in the water can be reduced, and the washing effect can be improved. The switching device 270 controls the communication direction of the drain pipeline 210, so that the flow direction of water in the pipeline can be controlled, and two functions of outward draining and circulating and filtering washing water can be realized through one circulating pump 400.

When the thread scraps in the filtering device 600 are cleaned, after the washing and intermediate rinsing of the washing machine are finished, the circulating pump 400 is controlled to keep the operation state, the water in the water containing barrel 100 is conveyed to the filtering device 600 for washing, and the sewage after washing is discharged from the sewage outlet 6103 of the filtering device 600. After the last rinsing is finished, the circulating pump 400 is closed firstly, air enters the pipeline, the circulating pump 400 is restarted, air in the pipeline is pressed into the filtering device 600, so that sewage in the pipeline is completely discharged, no sewage residue exists in the filtering device 600 after the washing machine stops running, and bacteria breeding can be effectively avoided. Meanwhile, the washing machine performs the operation of turning off the circulation pump 400 first and then turning on the circulation pump after the last rinsing is finished, thereby reducing unnecessary turning on and off operations of the circulation pump 400 and prolonging the service life of the circulation pump 400.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A washing machine, characterized by comprising:

a water-containing cylinder is arranged at the bottom of the water tank,

2. The washing machine as claimed in claim 1, wherein the recovery device comprises:

a housing having a recovery chamber therein;

3. The washing machine as claimed in claim 2, further comprising a detergent box in communication with the water containing tub through a pipe; the second chamber is communicated with the detergent box, and the filtered clean water flows into the detergent box from the second chamber and then enters the water containing barrel.

4. The washing machine as claimed in claim 3, wherein the recovery unit is disposed above and below the detergent box, and a passage for filtered clean water to pass through is disposed between the recovery unit and the detergent box;

5. The washing machine as claimed in claim 3, wherein the recovery device is provided at one side of the detergent box in a horizontal direction, and a passage for filtered clean water to pass is provided therebetween;

6. The washing machine as claimed in claim 2, wherein the second chamber is communicated with the water drum through a pipeline to feed filtered clean water into the water drum;

7. The washing machine as claimed in claim 6, wherein the water container has a first water return hole, and the second chamber is connected to the first water return hole via a pipeline;

8. The washing machine as claimed in claim 2, further comprising a main drain line to drain water to the outside, the second chamber being communicated with the main drain line through a pipe.

9. The washing machine as claimed in claims 1 to 8, further comprising a cabinet, wherein the water cartridge and the filtering device are both disposed in the cabinet; the recovery device is arranged on the box body in an insertion/extraction mode.

10. The washing machine as claimed in claim 1, further comprising a detergent box communicated with the water containing drum through a pipeline; the recovery device is arranged in the detergent box and comprises a filtering component capable of filtering sewage carrying filtering impurities;