CN115613302A

CN115613302A - Washing machine and control method thereof

Info

Publication number: CN115613302A
Application number: CN202110789597.2A
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 and a control method thereof, wherein the washing machine comprises: the water containing cylinder is used for receiving water in the water containing cylinder for filtering and is provided with a sewage discharge outlet for discharging filtered impurities outwards; the outer discharge pipeline is used for discharging water to the outside of the washing machine; the switching device is used for controlling the filtration device and the outer discharge pipeline to be selected to be communicated with the water containing barrel; 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. The switching device is arranged in the washing machine, the communication direction of the water path can be controlled through the switching device, water is guided to the filtering device and drained outwards, the two purposes share a part of pipelines, the pipeline distribution structure in the washing machine is simplified, and the installation difficulty is reduced.

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 the clothes by the washing machine, the clothes generate threads and scraps to fall off and be mixed 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, a conventional washing machine is provided with a filter for filtering lint, and the lint is removed from the washing water by continuously passing the washing water through the filter during washing.

The filter of the existing washing machine is generally disposed inside the inner tub or the drain pump, and is used for filtering lint 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.

Meanwhile, for the scheme that the filter is arranged inside the drainage pump or outside the outer barrel, a circulating pipeline for circulating the washing water needs to be arranged in the washing machine for realizing the circulating filtration of the washing water, so that the internal water path structure of the washing machine is more complicated, and even the inside of the washing machine occupies larger space, and the volume of clothes contained in the washing machine is influenced.

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. Part of the thread scraps can be discharged along with water flow and enter ecological cycle, and the health of human bodies is finally influenced.

Because of the above problems, the prior art proposes a filter capable of self-cleaning, which is capable of removing thread scraps and the like in the filter by washing or vibrating, and then collecting the thread scraps and the like into a drain pipe of a washing machine along with washing water to be discharged out of the washing machine. However, in the scheme, the washed thread scraps are directly gathered into the drainage water flow of the washing machine and still enter into ecological circulation, thus posing a threat to human health.

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 and a control method thereof, wherein a switching device is arranged in the washing machine and used for controlling the communication mode of a water channel so as to control the flow direction of water flow, so that water can be guided to a filtering device and drained to the outside of the washing machine, two completely independent water channels are not required to be separately arranged, the distribution structure of the pipelines in the washing machine is simplified, meanwhile, filtered impurities can be drained into a recycling device for collection, and can not be directly drained along with the drainage of the washing machine, and the possibility that fine thread scraps enter ecological circulation along with the water flow is reduced.

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

a washing machine, comprising:

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

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

an external discharge pipeline for discharging water to the outside of the washing machine;

the switching device is used for controlling the filtration device and the outer discharge pipeline to be selected to be communicated with the water containing barrel;

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 switching device is a switching valve assembly comprising:

the water inlet is communicated with the water containing barrel through a pipeline;

the first water outlet is communicated with the filtering device;

the second water outlet is communicated with the outer discharge pipeline;

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

Furthermore, a circulating pump is arranged between the water inlet of the switching valve component and the water containing barrel;

preferably, a water containing barrel drain pipe is arranged on the water containing barrel and is connected with the water inlet end of the circulating pump; the water outlet end of the circulating pump is connected with a water drainage pipeline, and the water drainage pipeline is connected to the water inlet of the switching valve component.

Further, the switching device is a circulating drain pump, comprising:

the pump body is provided with a pump inlet communicated with the water containing barrel, a circulating water port communicated with the filtering device and a water outlet communicated with the external discharge pipeline;

the circulating motor is arranged on the pump body and corresponds to the circulating water gap, and controls the opening and closing of the circulating water gap;

and a drainage motor installed on the pump body at a position corresponding to the drainage outlet and controlling the opening and closing of the drainage outlet.

Furthermore, a water containing barrel drain pipe is arranged on the water containing barrel and is connected with the pump inlet; the circulating water port is communicated with the filtering device through a circulating pipeline, and the water outlet is communicated with the external discharge pipeline through a drainage pipeline.

Further, the pump body includes:

the pump body is of a hollow columnar structure with a certain length, one end of the pump body is arranged in a closed mode, and the side wall of the other end of the pump body is provided with the pump inlet;

the circulating motor mounting part is arranged on the side wall close to the closed end of the pump body and is provided with a circulating motor mounting opening communicated with the interior of the pump body, the orientation of the circulating motor mounting opening is vertical to the length direction of the pump body, and the circulating water gap is arranged on the side wall of the circulating motor mounting part;

the drainage motor mounting part is arranged at one end of the pump body where the pump inlet is positioned, and is provided with a drainage motor mounting opening communicated with the interior of the pump body, the direction of the drainage motor mounting opening is parallel to the length direction of the pump body, and the water outlet is formed in the side wall of the drainage motor mounting part;

preferably, the pump inlet and the circulation water gap are oriented parallel to each other, and the water discharge gap is oriented perpendicular to the orientation of the pump inlet.

Furthermore, the filtering device is also provided with a filtered water outlet for discharging the filtered water outwards, the filtered water outlet is communicated with the water containing barrel through a water return pipeline, and the water return pipeline is provided with a water return control valve for controlling the on-off of the water return pipeline;

and a sewage discharge port of the filtering device is communicated with the recovery device through a sewage discharge pipeline, and a sewage discharge control valve for controlling the on-off of the sewage discharge pipeline is arranged on the sewage discharge pipeline.

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 draining outlet 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.

Another objective of the present invention is to provide a control method for the above washing machine, wherein the switching device connects the water container and the filtering device, and the water in the water container is introduced into the filtering device;

the switching device is communicated with the water containing barrel and the outer discharge pipeline to discharge the water in the water containing barrel out of the washing machine through the outer discharge pipeline.

Furthermore, the filtering device is provided with a filtered water outlet, the filtered water outlet is communicated with the water containing barrel through a water return pipeline, and a water return control valve is arranged on the water return pipeline;

a sewage discharge port of the filtering device is communicated with the recovery device through a sewage discharge pipeline, and a sewage discharge control valve is arranged on the sewage discharge pipeline;

the switching device is used for communicating the water containing barrel with the filtering device, the return water control valve is opened to communicate the return water pipeline, the blowdown control valve is closed, water in the water containing barrel is introduced into the filtering device to be filtered, and the filtered water returns to the water containing barrel through the return water pipeline;

the switching device is used for switching on the water containing barrel and the filtering device, closing the water return control valve, opening the sewage discharge control valve to switch on the sewage discharge pipeline, introducing water in the water containing barrel into the filtering device, and discharging the water into the recovery device through the sewage discharge pipeline after cleaning the filtering device.

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

According to the invention, water in the water containing barrel of the washing machine can be introduced into the filtering device or directly discharged out of the washing machine, and the switching device is arranged to control the filtering device and the outer discharge pipeline to be alternatively communicated with the water containing barrel of the washing machine, so that the flow direction of water flow led out of the water containing barrel is controlled, the trouble of respectively arranging two completely independent water paths is eliminated, and the pipeline distribution structure in the washing machine is simplified. Meanwhile, filtering impurities such as thread scraps filtered by the filtering device are discharged into the recovery device to be collected, and are not directly discharged along with the drainage of the washing machine, so that the condition that fine thread scraps are mixed into ecological circulation to harm the ecological environment and human health is avoided.

The switching valve assembly is used for controlling the communication direction of the water path, the structure is simple, the realization is easy, meanwhile, only one circulating pump is arranged in the washing machine, and the switching valve assembly can be matched with the washing machine to realize two functions of water guiding to the filtering device and water drainage to the outside of the washing machine, so that the production cost is reduced.

According to the invention, the communication direction of the water path is controlled by the circulating drainage pump with an integrated structure, compared with a scheme that a circulating pump and a drainage pump are respectively arranged, the number of the water pumps is reduced, so that the installation space is saved, and the installation difficulty is reduced.

According to the invention, the on-off of the water return pipeline and the sewage discharge pipeline is respectively controlled by arranging the water return control valve and the sewage discharge control valve, so that the water outlet direction of the filtering device is controlled, the water in the filtering device is ensured to flow out from the corresponding outlet, and the circular filtration of the washing water and the discharge of filtered impurities are realized. Set up filtering component among the recovery unit, carry the sewage of filtering impurity to the exhaust of filter equipment and filter to filter impurity and separation of water and collect in inside first cavity, avoid filtering impurity and get into ecological cycle along with rivers discharge washing machine.

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 view 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 schematic view of the invention at B of FIG. 1;

FIG. 4 is a schematic view illustrating a drainage state of the washing machine according to the first embodiment of the present invention;

FIG. 5 is a schematic view illustrating the washing machine filtering the washing water according to the first embodiment of the present invention;

FIG. 6 is a schematic view of a washing machine according to a second embodiment of the present invention, in which a circulation motor is turned on;

FIG. 7 is a schematic view of a washing machine according to a second embodiment of the present invention, in which a drain motor is turned on;

FIG. 8 is a schematic structural view of a pump body according to a second embodiment of the present invention;

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

fig. 10 is a schematic view of the invention at section C-C in fig. 9.

In the figure: 10. a box body; 100. a water containing cylinder; 110. a window pad; 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 valve assembly; 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 part; 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;

700. circulating the drain pump; 701. a circulating motor; 702. a water discharge motor; 710. a pump body; 711. a circulating motor mounting part; 712. a drainage motor mounting part; 713. a pump body; 721. a circulating water gap; 722. a water discharge port; 723. a pump inlet.

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 to illustrate it by a person skilled in the art with 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 a specific case to those of ordinary skill in the art.

Example one

As shown in fig. 1 to 5, the washing machine according to the present embodiment includes:

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

a filtering device 600 for receiving the water in the water barrel 100 for filtering and having a sewage outlet 6103 for discharging the filtering impurities 501 outwards;

an external discharge pipe 250 for discharging water to the outside of the washing machine;

the switching device controls one of the filtering device 600 and the outer discharge pipeline 250 to be communicated with the water containing barrel 100;

the recycling device 500 is communicated with a sewage outlet 6103 of the filtering device 600, and is used for collecting the filtering impurities 501 discharged from the filtering device 600.

In the above solution, a switching device is provided inside the washing machine for controlling the flow direction of the water flow guided out from the water containing drum 100. When the switching device conducts the water containing cylinder 100 and the filtering device 600, water in the water containing cylinder 100 can be introduced into the filtering device 600; when the switching device conducts the water containing cylinder 100 and the external discharge pipeline 250, the water in the water containing cylinder 100 can be directly discharged out of the washing machine through the external discharge pipeline 250. Through the arrangement mode, two completely independent drainage water paths and circulation water paths do not need to be arranged inside the washing machine respectively, but the drainage water paths and the circulation water paths can share part of pipeline structures, so that the pipeline distribution structure inside the washing machine is simplified, and the installation space is saved.

The filtering apparatus 600 of this embodiment has a function of automatically cleaning the filtered impurities 501, and can discharge the filtered impurities 501 through the sewage outlet 6103. Discharged filtering impurities 501 can be introduced into the recovery device 500 for collection, and can not be mixed into the drainage water flow of the washing machine for direct discharge, so that the situation that fine thread scraps in the filtering impurities 501 enter ecological circulation along with the drainage water flow and harm the ecological environment and human health is avoided.

In a specific aspect of this embodiment, the switching device is a switching valve assembly 270, including:

a water inlet communicated with the water containing barrel 100 through a pipeline;

a first water outlet communicated with the filtering device 600;

a second water outlet communicated with the outer discharge pipeline 250;

A circulation pump 400 is provided between the water inlet of the switching valve assembly 270 and the water containing barrel 100.

In detail, the water drum 100 is provided with a water drum drain pipe 260, and the water drum drain pipe 260 is connected to a water inlet end of the circulation pump 400. The water outlet end of the circulation pump 400 is connected to the water discharge line 210, and the water discharge line 210 is connected to the water inlet of the switching valve assembly 270.

The filter device 600 is provided with a water inlet 6101, the first water outlet of the switching valve assembly 270 is connected to the circulation pipe 220, and the circulation pipe 220 is connected to the water inlet 6101 of the filter device 600. The second outlet of the diverter valve assembly 270 is connected directly to the outer discharge line 250.

In the above solution, the switching valve assembly 270 is adopted as a switching device for controlling the flow direction of the water flow, and the switching device has a simple structure, is low in production cost, and is easy to install. In this embodiment, the filtering device 600 is disposed above the water container 100, and the external discharge pipe 250 is also disposed in the upper region of the washing machine, so that the circulation pump 400 needs to be disposed to transport the water in the water container 100 upward along the pipe. The switching valve assembly 270 is arranged at the downstream of the circulating pump 400 to control the flow direction of water, and the inside of the washing machine can realize two purposes of water guiding to the filtering device 600 and outward water drainage only by arranging one circulating pump 400, so that the use number of water pumps is reduced, and the production cost is reduced.

As shown in fig. 1 and fig. 3, in this embodiment, after the circulation pump 400 is turned on, the switching device is controlled to connect the water container 100 and the filtering device 600, that is, the switching mechanism in the switching valve assembly 270 is controlled to operate to connect the water inlet and the first water outlet, so that water in the water container 100 can be introduced into the filtering device 600.

Further, the water introduced into the filter device 600 is discharged into the recovery device 500 together with the filtered foreign matters 501 after the filter device 600 is washed.

As shown in fig. 4, after the circulation pump 400 is turned on, the switching device is controlled to connect the water container 100 and the external discharge pipeline 250, that is, the switching mechanism in the switching valve assembly 270 is controlled to operate to connect the water inlet and the second water outlet, so that the water in the water container 100 can be discharged out of the washing machine through the external discharge pipeline 250.

In a further scheme of this embodiment, the filtering device 600 further has a filtered water outlet 6102 for discharging the filtered water outwards, the filtered water outlet 6102 is communicated with the water containing barrel 100 through a water return pipeline 230, and the water return pipeline 230 is provided with a water return control valve 231 for controlling the on/off of the water return pipeline 230. The water outlet end of the water return pipe 230 is connected to the window pad 110 at the opening of the water containing barrel 100, and the filtered water enters the water containing barrel 100 through the window pad 110.

A sewage outlet 6103 of the filtering apparatus 600 is communicated with the recycling apparatus 500 through a sewage pipeline 240, and a sewage control valve 241 for controlling the on-off of the sewage pipeline 240 is arranged on the sewage pipeline 240.

Specifically, in the present embodiment, the filter device 600 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 inside the filtering cavity 610, divides the inside of the filtering cavity 610 into an inner containing cavity and an outer containing cavity, and is provided with a water outlet connector 621 communicated with the filtered water outlet 6102.

When the filtering device 600 filters water, 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, is discharged out of the filtering device 600 through the filtered water outlet 6102, and filtered impurities 501 filtered out of the water are attached to the outer surface of the filtering mechanism 620. When the interior of the filter device 600 needs to be cleaned, water can be introduced into the filter cavity 610 through the water inlet 6101, and the filtering impurities 501 attached to the surface of the filter 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.

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 to ensure that the water entering the filter device 600 flows out from the corresponding outlet, so as to realize the circular filtration of the washing water and the discharge of the filtered impurities 501.

As shown in fig. 5, in this embodiment, after the circulation pump 400 is turned on, the switching device is controlled to connect the water container 100 and the circulation pipeline 220, the return control valve 231 is opened to connect the return pipeline 230, the blowdown control valve 241 is closed, water in the water container 100 is filtered by the filtering device 600, and the filtered water returns to the water container 100 through the return pipeline 230.

As shown in fig. 1 and 2, when the circulation pump 400 is in an on state, the switching device is controlled to connect the water container 100 and the circulation pipeline 220, the backwater control valve 231 is closed, the drain control valve 241 is opened to connect the drain pipeline 240, water in the water container 100 is introduced into the filtering device 600, and the filtering device 600 is cleaned and discharged into the recycling device 500 through the drain pipeline 240.

In this embodiment, by providing the switching device, specifically, the switching valve assembly 270 is used to control the communication mode of the internal water channel of the washing machine, so as to control the flow direction of the water flow guided out from the water containing cylinder 100, the pipeline distribution structure inside the washing machine can be simplified, and the installation is convenient. Meanwhile, the circulation pump 400 is matched with the switching valve assembly 270, so that two purposes of guiding water to the filtering device 600 and draining water to the outside of the washing machine are achieved, and the production cost is reduced. The return water pipeline 230 communicated with the water containing barrel 100 and the sewage discharge pipeline 240 communicated with the recovery device 500 are connected to the filter device 600, and control valves are arranged on the two pipelines to control on-off, so that the water outlet direction of the filter device 600 can be controlled, the filter device 600 is ensured to discharge water outwards through a corresponding outlet, washing water is filtered, and a self-cleaning function is realized.

Example two

As shown in fig. 6 to 8, the present embodiment is different from the first embodiment in that: the switching device is a circulating drain pump 700, and specifically comprises:

a pump body 710 provided with a pump inlet 723 communicated with the water containing barrel 100, a circulating water port 721 communicated with the filtering device 600, and a water discharge port 722 communicated with the outer discharge pipeline 250;

a circulation motor 701 installed at a position corresponding to the circulation water port 721 on the pump body 710 to control opening and closing of the circulation water port 721;

drain motor 702 is attached to pump body 710 at a position corresponding to drain port 722, and controls the opening and closing of drain port 722.

In the above solution, an integrated circulation drain pump 700 is used as a switching device, when the circulation motor 701 is turned on, water in the water container 100 can be pumped into the pump body 710 through the pump inlet 723 and then discharged from the circulation water outlet 721, so that the water is sent to the circulation pipeline 220 and conveyed to the filtering device 600. When the drain motor 702 is turned on, water pumped into the pump body 710 is pumped out of the drain port 722 into the drain line 250 and discharged out of the washing machine. The number of water pumps used in the washing machine is reduced by the above mode, so that the installation space is saved, and the installation difficulty is reduced.

In a further aspect of this embodiment, a water cartridge drain 260 is disposed on the water cartridge 100, and the water cartridge drain 260 is connected to the pump inlet 723. Circulation water port 721 communicates with filter apparatus 600 through circulation line 220, and drain port 722 communicates with drain line 250 through drain line 210.

In this embodiment, the body 710 of the recycling drain pump 700 specifically includes:

a pump body 713 having a hollow cylindrical structure with a certain length, one end of which is closed, and a pump inlet 723 is formed on the sidewall of the other end;

a circulation motor mounting part 711 provided on a side wall near a closed end of the pump body 713, having a circulation motor mounting port communicating with the inside of the pump body 713, the circulation motor mounting port being oriented perpendicular to a longitudinal direction of the pump body 713, and a circulation water port 721 provided on the side wall of the circulation motor mounting part 711;

the drain motor mounting portion 712 is provided at one end of the pump body 713 where the pump inlet 723 is located, and has a drain motor mounting opening that communicates with the inside of the pump body 713, the drain motor mounting opening being oriented in parallel with the longitudinal direction of the pump body 713, and the drain opening 722 is provided on a side wall of the drain motor mounting portion 712.

Preferably, the pump inlet 723 and the circulation gate 721 are oriented in parallel with each other, and the drain 722 is oriented perpendicular to the pump inlet 723.

In detail, an output end of the circulation motor 701 is disposed in the circulation motor mounting part 711 and connected to a circulation pump impeller, and a circulation water port 721 is located at an outer circumference of the circulation pump impeller. The circulation motor 701 is turned on to drive the circulation pump wheel to rotate, and water entering the interior of the pump body 713 is pumped out through the circulation water port 721.

Similarly, an output end of the drain motor 702 is disposed in the drain motor mounting portion 712 and connected with a drain pump, and the drain port 722 is located at an outer periphery of the drain pump. The drainage motor 702 is turned on to drive the drainage pump wheel to rotate, so as to pump out the water entering the interior of the pump body 713 through the drainage port 722.

In this embodiment, the internal of the washing machine is provided with the recycle water discharge pump 700 of an integrated structure, and the recycle water discharge pump 700 can be controlled to deliver water flows in different directions by respectively controlling the on/off of the recycle motor 701 and the water discharge motor 702, so as to control the washing machine to guide water to the filter device 600 or discharge water to the outside. By reducing the number of the water pumps, the installation space in the washing machine is saved, the production cost is reduced, and the control logic of the washing machine is simple and easy to realize.

EXAMPLE III

As shown in fig. 1 to 3, the present embodiment is further limited to the first embodiment, and 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, and enters the second chamber 532 after being filtered by the filtering assembly 520, and the filtering impurities 501 are collected in the first chamber 531.

Specifically, the filtering component 520 may be a frame horizontally disposed at a certain height in the recycling 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. The housing 510 is installed on the cabinet 10 of the washing machine to be inserted/withdrawn, and has an opening at an upper side, so that the user can withdraw the housing 510 from the cabinet 10, thereby cleaning the filtering impurities 501 attached to the upper surface of the filtering member 520.

Preferably, the second chamber 532 is provided with a water outlet to lead out the clean water entering the second chamber 532, so as to prevent the sewage discharged into the recycling device 500 from overflowing from the recycling device 500 due to an excessive amount of sewage. Meanwhile, when the user draws the housing 510 out of the cabinet 10, only the filtered impurities 501 on the filter assembly 520 need to be cleaned, and when the filter assembly 520 is detachably connected to the housing 510, the filter assembly 520 can be directly detached for cleaning without completely detaching the housing 510 from the washing machine, and the water in the second chamber 532 can be manually poured out, so that the operation is more convenient.

Specifically, the water outlet of the second chamber 532 may be communicated with a main water inlet pipeline of the washing machine through a pipeline, for example, connected to the detergent box 300 of the washing machine, or the water outlet of the second chamber 532 may be directly connected to the water drum 100 through a pipeline, so that the clean water filtered out of the filtered impurities 501 may be introduced into the water drum 100 for recycling. Or, the water outlet is communicated with an external discharge pipeline 250 of the washing machine through a pipeline, and the water filtered to remove the impurities 501 is merged into the drainage water flow of the washing machine and is discharged out of the washing machine together. Since the filtering foreign substances 501 are removed while passing through the filtering member 520, there is no filtering foreign substances 501, especially fine lint therein is discharged with the drainage water flow, thereby preventing the problem of the fine lint from being mixed into the ecological cycle.

In this embodiment, the washing machine is provided with a recycling device 500 for collecting the sewage discharged from the filtering device 600, and a filtering assembly 520 for filtering the sewage discharged from the filtering device 600 is disposed in the recycling device 500, so as to separate the filtering impurities 501 from the water. The clean water without the filtering impurities 501 can be introduced into the water containing barrel 100 for recycling, so that the water consumption of the washing machine is reduced, or the clean water can be gathered into the drainage water flow to be directly discharged, and the condition that fine thread scraps are directly discharged outside to cause the fine thread scraps to enter ecological cycle does not exist. The recycling apparatus 500 is integrally installed in the cabinet 10 of the washing machine in a drawer-like structure, so that a user can clean the filtered impurities 501 filtered by the filtering assembly 520.

Example four

As shown in fig. 1 and 2, this embodiment is further defined by the first embodiment, in the filter device 600, the filter mechanism 620 is rotatably installed inside the filter cavity 610, and the filter device 600 further includes a driving mechanism 660 connected to the filter mechanism 620 for driving the filter mechanism 620 to rotate inside the filter 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 filtration impurity peels off from filtering mechanism 620 surface under the dual function of centrifugal force and the water current of sloshing, has realized filter device 600's automatic clearance in this embodiment, need not the user and lift filter device 600 off and carry out manual clearance, and the clearance rate of filtering impurity is high simultaneously, and the clearance is effectual.

Further, as shown in fig. 9 and 10, the outer circumference of the filtered water outlet 6102 on the filtering cavity 610 extends to the outside of the filtering 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 a gap between the water outlet connector 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 chamber 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 utmost that the installation environment of first bearing 631 is anhydrous, has avoided first bearing 631 to meet the water and has rusted, influences filtering mechanism 620 pivoted smooth and easy nature.

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 stopper surface 601, the surface of the first bearing 631 facing the outside of the filter chamber 610 abuts against the second stopper surface 602, and the surface of the second sealing member 642 facing the outside of the filter chamber 610 abuts against the third stopper 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 connector 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 connector 621 is formed on an outer wall of the water outlet connector 621. The surface of the first bearing 631 facing the inside of the filter chamber 610 abuts against the fourth limit 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 stopper surface 604 facing the left side is formed at the abrupt change 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 652 inserted into the left end opening of seal support 611 for positioning when filter cavity flange 650 is 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, and is prevented from contacting 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 element 643. An inner wall of the third seal 643 is sealingly connected to an outer wall of the rotation support 622, and an outer wall of the third seal 643 is sealingly connected to 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 one 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 622, and the structure is stable.

In this embodiment, the first sealing element 641, the second sealing element 642 and the third sealing element 643 are all oil seals, and the right wall of the filtering cavity 610 is separated from the peripheral side wall thereof. 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 mounted inside the filter cavity 610, the third sealing element 643 and the second bearing 632 are mounted at the right end thereof, and finally the right wall of the filter cavity 610 is fastened with the peripheral 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 sewage 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 sewage outlet 6103 is disposed near the left end of the filtering cavity 610, and the positions of the water inlet 6101 and the sewage outlet 6103 in the circumferential direction of the filtering cavity 610 are symmetrical.

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 device 600, and after the washing water to be filtered enters the filtering cavity 610, the water filtered to remove thread scraps enters the filtering mechanism 620 and flows out through the water outlet connector 621. The filterable thread scraps are attached to the outer surface of the filtering mechanism 620, and the filtering mechanism 620 is driven to rotate, so that the thread scraps can be separated, and water in the filtering cavity 610 is discharged through the sewage outlet 6103, so that the self-cleaning function of the filtering device 600 is realized, and the manual cleaning of a user is not needed.

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.

In this embodiment, when the circulation pump 400 is turned on, the switching valve assembly 270 connects the drain line 210 and the circulation line 220, and the return control valve 231 is opened, the driving mechanism 660 remains closed, and the water in the water containing barrel 100 is filtered by the filtering device 600, flows out through the filtered water outlet 6102, and returns to the water containing barrel 100 through the return line 230. When the return water control valve 231 is closed and the drain control valve 241 is opened, the driving mechanism 660 is opened to drive the filtering mechanism 620 to rotate at a high speed in the filtering cavity 610, so that the filtering impurities attached to the surface of the filtering mechanism 620 fall off and are merged into the water in the filtering cavity 610, and are discharged through the drain outlet 6103, and enter the recovery device 500 through the drain pipeline 240.

EXAMPLE five

As shown in fig. 1 and 2, the present embodiment provides a control method of the washing machine in the fourth embodiment.

In this embodiment, the water discharge pipe 260 of the water container, the water discharge pipeline 210, the circulation pipeline 220 and the water return pipeline 230 together form a circulation filtering pipeline, and the water in the water container 100 flows along the circulation filtering pipeline, passes through the filtering device 600 for filtering, and then returns to the water container 100 along the circulation filtering pipeline.

To achieve the filtering of the water in the water cartridge 100, the washing machine performs a circulation filtering operation during washing and rinsing, including:

the blowdown control valve 241 is closed, and simultaneously the water return control valve 231 is opened to conduct the water return pipe 230, and the switching valve assembly 270 communicates the drain pipe 210 and the circulation pipe 220;

the circulation pump 400 is turned on, the water in the water containing cylinder 100 is introduced into the filtering device 600, and after the impurities are removed by the filtering device 600, the water returns to the water containing cylinder 100 again.

In this embodiment, the washing machine performs the circulation filtering operation in both the washing stage and the one-to-many rinsing stage of the washing process. 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 drain control valve 241 is opened to conduct the drain line 240;

and when the second set condition is reached, the circulating filtering 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 valve assembly 270 communicates the filter device 600 with the water outlet side of the circulation pump 400, and opens the return control valve 231 to communicate the return pipe 230. The cut-off circulating filter pipeline comprises: the switching valve assembly 270 communicates between the outer discharge line 250 and the water outlet of the circulation pump 400.

It will be appreciated that the described 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.

After the circulation pump 400 is turned off after rinsing, the water in the drain line 210 and the circulation line 220 flows back downward under the action of gravity, and at most, the water level in the drain line 210 is flush with the water level in the water container 100, and the pipeline 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 return water control valve 231 is also closed while the circulation pump 400 is closed, and the soil discharge control valve 241 is in a closed state at this time, and water inside the filtering apparatus 600 remains in the filtering chamber 610 and is not discharged to the outside.

After the driving mechanism 660 is opened, the filtering mechanism 620 is driven to rotate at a high speed, so that filtering 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.

When the first set condition is reached, the circulation pump 400 is started, and the drain control valve 241 is also opened, so that the drain pipeline 240 is conducted, and 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 drain 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, the sewage residue in the filtering device 600 is avoided, and the cleaning effect on the filtering device 600 is good. 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 completely discharged, 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 (b) can be obtained in advance through a large number of experiments and directly written into the 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 line 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: circulating pump 400 andin the pipeline between the filtering devices 600, the water level reaches a 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 in the drain line 210 rises to the second set value H ₂ Until the switching valve assembly 270 opens the drain line 210 and the outer drain line 250, typically with a time difference. 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 Has sufficient response time to control the switching valve assembly 270 to complete the switching of the water circuit.

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 water 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 action of 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 drum 100 may be lowered to a predetermined value Δ H ₁ When the circulation filtering pipeline is cut off, that is, the switching valve assembly 270 is controlled to conduct the drain pipeline 210 and the external discharge pipeline 250, the circulation pump 400 continues to operate, and the residual water in the water containing drum 100 is discharged 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 an operation of turning off the circulation pump 400 and then turning on the circulation pump 400 only at the end of the last rinsing 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:

the circulating pump 400 is started, the switching valve assembly 270 conducts the water outlet end of the circulating pump 400 and the filtering device 600, the water return control valve 231 is opened, and the washing machine performs circulating filtering washing;

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 setting condition is reached, the switching valve assembly 270 connects the water outlet end of the circulation pump 400 with 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 bucket 100 can reach the preset value deltaH 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 washing machine drives the water in the water drum 100 to circularly flow through the filtering device 600 by the circulating pump 400 during the washing and rinsing processes, so as to reduce the thread scraps in the water and improve the washing effect. The communication direction of the drain line 210 is controlled by the switching valve assembly 270, so that the flow direction of water in the line can be controlled, and two functions of draining water outwards and filtering washing water circularly can be realized by 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 after waiting, 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 is left 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 and then turning on the circulation pump only 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 the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.

Claims

1. A washing machine, characterized by comprising:

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

2. The washing machine as claimed in claim 1, wherein the switching device is a switching valve assembly comprising:

the first water outlet is communicated with the filtering device;

the second water outlet is communicated with the outer discharge pipeline;

3. The washing machine as claimed in claim 2, wherein a circulation pump is provided between the water inlet of the switching valve assembly and the water drum;

4. The washing machine as claimed in claim 1, wherein the switching device is a sump pump comprising:

the circulating motor is arranged on the pump body and corresponds to the circulating water port, and controls the opening and closing of the circulating water port;

5. The washing machine as claimed in claim 4, wherein a tub drain pipe is provided on the tub, the tub drain pipe being connected to the pump inlet; the circulating water port is communicated with the filtering device through a circulating pipeline, and the water outlet is communicated with the outer discharge pipeline through a drainage pipeline.

6. A washing machine as claimed in claim 4 or 5 wherein the pump body comprises:

7. The washing machine as claimed in any one of claims 1 to 6, wherein the filtering means further has a filtered water outlet for discharging the filtered water to the outside, the filtered water outlet being communicated with the water containing tub through a return pipe, the return pipe being provided with a return control valve for controlling the on/off of the return pipe;

and a sewage discharge port of the filtering device is communicated with the recycling device through a sewage discharge pipeline, and a sewage discharge control valve for controlling the on-off of the sewage discharge pipeline is arranged on the sewage discharge pipeline.

8. The washing machine as claimed in any one of claims 1 to 7, wherein the recycling apparatus comprises:

a housing having a recovery chamber therein;

the sewage draining exit 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.

9. A control method of a washing machine according to any one of claims 1 to 8, wherein the switching means connects the water containing cartridge and the filtering means, and passes water in the water containing cartridge into the filtering means;

10. The control method of a washing machine according to claim 9, wherein the filtering device has a filtered water outlet which is communicated with the water containing barrel through a return water pipeline, and a return water control valve is arranged on the return water pipeline;

the switching device switches on the water containing barrel and the filtering device, closes the water return control valve, opens the sewage discharge control valve to switch on the sewage discharge pipeline, and water in the water containing barrel is introduced into the filtering device and is discharged into the recycling device through the sewage discharge pipeline after the filtering device is cleaned.