Control method of washing equipment and washing equipment

Abstract

The invention discloses a control method of washing equipment and the washing equipment. The washing equipment comprises a water containing barrel, a water pump and a controller, the thread chip filtering device is communicated with the water containing barrel and is used for filtering washing water carrying thread chips; the thread chip filtering device is provided with a thread chip discharging opening and is used for discharging thread chips filtered out from the washing water along with water flow; the washing equipment further comprises a thread scrap discharging water way which is connected to the thread scrap discharging opening. The waterway switching device is used for controlling the on-off of the line chip discharging waterway; the washing program runs until the final dehydration stage is completed, and the waterway switching device is controlled to conduct the thread scrap discharging waterway; after the washing program is finished, the waterway switching device keeps the state of conducting the thread scrap discharging waterway; and the washing equipment receives the program starting instruction and controls the water path switching device to cut off the thread scrap discharging water path. According to the washing equipment, after the washing procedure is finished, the thread chip discharging water way is kept to be conducted, the thread chip filtering device can continue to discharge thread chips and accumulated water, and residues of the thread chips and the accumulated water are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing equipment, and specifically relates to a control method for a washing equipment and a washing equipment. Background Art

[0002] For washing equipment used to wash clothes, such as a washing machine, during the process of washing clothes, due to the friction between clothes and between clothes and the washing machine itself, lint will fall off the clothes and mix into the washing water. If the lint in the washing water cannot be removed, it is very likely to adhere to the surface of the clothes after the laundry is completed, affecting the washing effect of the clothes. For this reason, a filter for filtering lint is installed on existing washing machines, and the washing water continuously passes through the filter during the laundry process to remove the lint from the washing water.

[0003] However, the filtered lint will continuously accumulate in the filter. When the lint collection reaches a certain amount, it will affect the realization of the filtering function. And the filter is generally installed inside the washing machine, and users cannot directly observe the lint collection situation in it, and can only clean it regularly. However, if the amount of lint falling off the clothes washed by the user in a period of time is large, or the user forgets to clean the filter for a long time, the filter may become blocked. At this time, if the user uses the washing machine to wash clothes, since the filter cannot perform the filtering function, it will affect the washing effect of the clothes.

[0004] In recent years, the concept of microplastics has been proposed in the environmental protection field and has gradually received increasing attention. Research has found that an important source of microplastics is the wastewater discharged from household washing machines. This is because with the popularization of chemical fiber fabrics, the clothing fibers shed during the laundry process form micro-lint and are discharged with the drainage water flow of the washing machine, which becomes the microplastics mixed into the natural water environment. The micro-lint directly enters the ecological cycle with the drainage water flow and may accumulate in the human body through the natural biological chain, which may have an impact on human health. For this reason, relevant standards have been formulated for the content of micro-lint in the drainage of washing machines in some regions. And once the washing machine runs to wash clothes when the filter cannot be used, the lint shed from the clothes may be directly discharged with the drainage water flow of the washing machine, resulting in a large amount of micro-lint in the drainage of the washing machine and not meeting the emission standards.

[0005] To solve the above problems, filters with self-cleaning functions have been proposed in the prior art, which can automatically clean the filtered lint and discharge it. However, most filters achieve self-cleaning by guiding water to the filter during the washing process for flushing, and generally discharge the water mixed with a large amount of lint after self-cleaning when the washing is nearly completed. But when the filter filters out a large amount of lint from the water, especially when there are many micro-lints in the filtered lint, the micro-lints and water will form a relatively viscous fluid, and the discharge speed is slow. It is very easy to have the problem that when the washing machine finishes running and shuts down, the accumulated water mixed with a large amount of lint in the filter has not been completely discharged, resulting in the residue of lint and water in the filter, and further there is a risk of bacteria breeding and contaminating clothes during the next washing.

[0006] In view of this, the present invention is specifically proposed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a control method for a washing device and a washing device, which effectively avoid the problem of lint and accumulated water residues inside the lint filtering device of the washing device.

[0008] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0009] A control method for a washing device, the washing device includes:

[0010] A water storage barrel;

[0011] A lint filtering device, which is communicated with the water storage barrel and is used for filtering the washing water carrying lint;

[0012] The lint filtering device has a lint discharge port for discharging the lint filtered from the washing water along with the water flow;

[0013] The washing device further includes a lint discharge waterway connected to the lint discharge port;

[0014] And a waterway switching device for controlling the on-off of the lint discharge waterway;

[0015] When the washing program of the washing device runs to the end of the final dehydration stage, control the waterway switching device to conduct the lint discharge waterway;

[0016] When the washing program ends, the waterway switching device maintains the state of conducting the lint discharge waterway;

[0017] When the washing device receives a program start instruction, control the waterway switching device to cut off the lint discharge waterway.

[0018] Further, in the drainage stage of the washing program, water is guided from the water tub to the lint filtering device, and after being filtered, it is discharged from the washing device. The water path switching device maintains the state of cutting off the lint discharge water path; when it is detected that the water level in the water tub drops to the empty water level, the water path switching device is controlled to conduct the lint discharge water path.

[0019] Further, after the water path switching device conducts the lint discharge water path in the drainage stage, before entering the dehydration stage, the washing device controls the water path switching device to disconnect the lint discharge water path;

[0020] Or, after the water path switching device conducts the lint discharge water path in the drainage stage, it keeps the lint discharge water path continuously conducting for a first set duration T1, and then controls the water path switching device to disconnect the lint discharge water path.

[0021] Further, the drainage stage includes the drainage stage after the main washing stage;

[0022] Or, the drainage stage includes the drainage stage after the main washing stage and the drainage stage after the rinsing stage.

[0023] Further, the lint filtering device has a filtered water outlet for discharging the filtered water flow; the water path switching device includes a switching valve and a on-off valve that are integrally arranged and independently controlled. The on-off valve is connected to the lint discharge water path. The switching valve has one inlet and at least two outlets, and the inlet of the switching valve is in communication with the filtered water outlet;

[0024] After the washing device receives the program start instruction, it controls the on-off valve to close and cut off the lint discharge water path, and controls the switching valve to maintain the state where its inlet is not connected to each outlet, and starts to fill water into the water tub.

[0025] Further, the washing device further includes a water pump for guiding water from the water tub to the lint filtering device; the switching valve has two outlets, one of which is connected to a return water pipe for returning water to the water tub, and the other is connected to a drainage pipe for draining water outwards;

[0026] After the water filling is completed, the washing program enters the main washing stage, and the on-off valve remains closed;

[0027] When the main washing stage runs for a second set duration T2, it controls the switching valve to conduct and maintain the filtered water outlet of the lint filtering device and the return water pipe, and controls the water pump to start, and starts the circulating filtration washing.

[0028] Further, the lint filtering device includes a filter housing, and a filter cylinder rotatably arranged inside the filter housing. The filtered water outlet is in communication with the internal cavity of the filter cylinder;

[0029] The cyclic filtration and washing includes the following steps:

[0030] (1) The water pump starts and operates continuously for a first preset duration t1;

[0031] (2) The water pump stops operating, and the filter cartridge is controlled to continuously rotate in the filter housing for a second preset duration t2;

[0032] (3) The rotation of the filter cartridge is controlled to stop, the water pump is controlled to start and operate continuously for the first preset duration t1;

[0033] (4) The water pump stops operating, and the filter cartridge is controlled to continuously rotate in the filter housing for the second preset duration t2;

[0034] (5) The rotation of the filter cartridge is controlled to stop, after a certain duration, return to step (1).

[0035] Further, when the washing program runs to the drainage stage, the switching valve is controlled to conduct the filtered water outlet of the lint filtering device and the drainage pipeline, and the water pump is controlled to start to filter and discharge the washing water in the water holding cylinder.

[0036] Further, in the rinsing stage of the washing program, the on-off valve remains in the closed state, the switching valve is controlled to conduct and hold the filtered water outlet of the lint filtering device and the return water pipeline; the water pump operates for cyclic filtration and rinsing.

[0037] A washing device executes the control method of the above-mentioned washing device.

[0038] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0039] In the present invention, after the washing program of the washing device ends, the lint discharge water path remains in the conducting state, and the lint filtering device can continue to discharge the internal lint and accumulated water along the lint discharge water path, effectively avoiding the residue of lint and accumulated water in the lint filtering device, and further preventing the problem of bacterial growth caused by the residue of lint and accumulated water and secondary pollution to the clothes.

[0040] In the present invention, the lint filtering device filters the drainage water flow in the drainage stage of the washing program, avoiding the problem of direct discharge of lint, especially micro lint. After each drainage is completed, the washing device controls the lint discharge water path to conduct through the water path switching device, and the filtered lint can be discharged in time to avoid affecting the use of the lint filtering device in the subsequent stage of the washing program.

[0041] In the present invention, after the main washing stage runs for a period of time, the washing water is circularly filtered. Since the lint content in the water is very low at the beginning of washing, unnecessary operation of the water pump is avoided, and the loss of the water pump is reduced. During the process of circularly filtering and washing, the operation of the water pump to conduct water to the lint filtering device and the operation of the filter cylinder to rotate to shake off the attached lint are alternately carried out, which can avoid the problem of blockage of the lint filtering device when the lint amount is large. An interval period during which the water pump does not operate and the filter cylinder does not rotate is set during the circular filtering and washing. On the premise of ensuring the filtering effect, the loss of the water pump and the driving components for rotating the filter cylinder is reduced.

[0042] The following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings, as a part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the accompanying drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0044] Figure 1 is a schematic structural diagram of a washing device in an embodiment of the present invention;

[0045] Figure 2 is a specific structural diagram of a washing device in an embodiment of the present invention (the water holding cylinder is not shown);

[0046] Figure 3 is a schematic structural diagram of a water path switching device in an embodiment of the present invention;

[0047] Figure 4 is a schematic structural diagram of a lint filtering device in an embodiment of the present invention;

[0048] Figure 5 is a sectional view of a lint filtering device in an embodiment of the present invention;

[0049] Figure 6 is a flowchart of a control method of a washing device in an embodiment of the present invention;

[0050] Figure 7 is a detailed flowchart of a control method of a washing device in an embodiment of the present invention.

[0051] In the figure: 10, box body; 100, water cylinder; 220, intermediate pipeline; 230, return water pipeline; 240, lint discharge waterway; 250, drainage pipeline; 260, pump hose; 280, connecting pipeline; 400, water pump; 500, lint collection device; 560, collection assembly; 600, lint filtering device; 610, filter housing; 6101, water inlet; 6102, filtered water outlet; 6103, lint discharge outlet; 620, filter cylinder; 660, drive motor; 800, waterway switching device; 801, filtered water inlet; 802, circulation outlet; 803, drainage outlet; 804, lint water inlet; 805, lint water outlet; 810, switching valve; 811, switching motor; 820, on-off valve; 821, on-off motor.

[0052] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Specific embodiments

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0054] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0055] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] An embodiment of the present invention provides a control method for a washing device and a washing device that executes the control method. The washing device can be a washing machine, a washing and drying integrated machine, a nursing machine, or other washing devices with a clothing washing function.

[0057] Specifically, as Figures 1 to 5As shown in the figure, the washing device of this embodiment includes a box body 10, and a water storage cylinder 100 is arranged inside the box body 10. The washing device further includes a lint filtering device 600, which is communicated with the water storage cylinder 100 and can filter the washing water carrying lint in the water storage cylinder 100. The lint filtering device 600 also has a self-cleaning function, and a lint discharge port 6103 is arranged thereon. The lint discharge port 6103 is connected to a lint discharge waterway 240, and the lint collected by the lint filtering device 600 is discharged along with the water flow.

[0058] Further, the washing device further includes a lint collection device 500. The lint discharge waterway 240 extends from the lint discharge port 6103 of the lint filtering device 600 to the lint collection device 500, and the lint water discharged from the lint discharge port 6103 is sent into the lint collection device 500.

[0059] It should be noted that in the embodiments of the present invention, the lint water refers to the water flow discharged from the lint discharge port 6103 of the lint filtering device 600 and carrying a large amount of lint therein.

[0060] The lint collection device 500 can also filter the lint water, so as to separate the lint, including the micro lint therein, from the water. The water without lint after being filtered by the lint collection device 500 can be directly discharged from the washing device, without causing the problem of direct discharge of micro lint.

[0061] As a specific solution, the lint filtering device 600 has a water inlet 6101, a filtered water outlet 6102 and a lint discharge port 6103. Among them, the water inlet 6101 is communicated with the water storage cylinder 100, the washing water to be filtered enters the lint filtering device 600 from the water inlet 6101, the filtered water is discharged from the filtered water outlet 6102, and the lint discharge port 6103 is used to discharge the water flow carrying lint after self-cleaning. The lint discharge port 6103 is communicated with the lint collection device 500 through the lint discharge waterway 240, and the discharged lint water enters the lint collection device 500 along the lint discharge waterway 240.

[0062] In this embodiment, the lint collection device 500 is arranged at a position lower than the height of the lint discharge port 6103 of the lint filtering device 600. In this way, after the lint water in the lint filtering device 600 is discharged from the lint discharge port 6103, it can be discharged into the lint collection device 500 under the action of gravity, without the need for additional driving force. There is no need to separately set a driving device for the operation of discharging the lint water by the lint filtering device 600 inside the washing device, and the function of automatically discharging the lint water by the lint filtering device 600 can be realized.

[0063] As a specific solution, the lint filtering device 600 is arranged in the top area of the cabinet 10, the lint collecting device 500 is arranged in the bottom area of the cabinet 10, and the lint discharge water channel 240 extends from top to bottom, so that the lint water carrying lint in the lint filtering device 600 can be discharged into the lint collecting device 500 under the action of gravity.

[0064] Since the lint water in the lint filtering device 600 can be discharged along the lint discharge water channel 240 under the action of gravity, in order to prevent the lint filtering device 600 from discharging water from the lint discharge port 6103 during the filtering process and failing to play a filtering role, the washing device is further provided with a water channel switching device 800. The washing device can control the on-off of the lint discharge water channel 240 through the water channel switching device 800. Especially during the process of guiding water to the lint filtering device 600 for filtering, the lint discharge water channel 240 can be cut off to prevent the water entering the lint filtering device 600 from directly discharging from the lint discharge port 6103.

[0065] In this embodiment, the washing device controls the water channel switching device 800 to conduct the lint discharge water channel 240 at least when each washing program is about to finish running, so as to discharge the lint filtered out in the lint filtering device 600 during this running process and prevent the collected lint from affecting the filtering effect during the next running.

[0066] However, most devices for controlling the on-off of the water channel in the washing device use solenoid valves. However, in this embodiment, the water flow passing through the lint discharge water channel 240 carries lint. If a solenoid valve is used, it is possible that the lint gets hooked on the solenoid valve. And the torque of the solenoid valve is small, and the on-off control of the lint discharge water channel 240 may fail due to the hooking of the lint. On the other hand, most solenoid valves adopt a structure of opening when energized and automatically closing when de-energized, so they are in a closed state when the washing device is shut down. If a solenoid valve is used in the washing device of this embodiment to control the on-off of the lint discharge water channel 240, there may be a problem that the solenoid valve closes when there is still lint water remaining in the lint filtering device 600, resulting in the remaining of lint water in the lint filtering device 600.

[0067] Therefore, as shown in Figure 6 the washing device of this embodiment adopts a water channel switching device 800 that can maintain the state of conducting the lint discharge water channel 240 when de-energized, and at the same time cooperates with the following control method:

[0068] When the washing program of the washing device runs to the end of the final dehydration stage, control the water channel switching device 800 to conduct the lint discharge water channel 240;

[0069] When the washing program ends, the water channel switching device 800 maintains the state of conducting the lint discharge water channel 240;

[0070] Upon receiving a program start instruction, the washing device controls the water path switching device 800 to cut off the lint discharge water path 240.

[0071] As a specific implementation manner, the washing program at least includes a main washing stage, a main washing drainage stage, a main washing dehydration stage, a rinsing stage, a rinsing drainage stage, a rinsing dehydration stage, and a final dehydration stage. In at least one stage before the final dehydration stage, the washing device performs a filtering operation of guiding water to the lint filtering device 600.

[0072] In the above solution, when the washing device completes the final dehydration stage of the washing program, it controls the water path switching device 800 to conduct the lint discharge water path 240. At this time, the washing program is approaching the end, and the lint filtered out in the lint filtering device 600 can be discharged into the lint collection device 500 along with the water flow along the lint discharge water path 240. Before the washing program ends, the water path switching device 800 no longer operates. Thus, after the washing program ends and after the washing device is shut down, the lint discharge water path 240 remains in a conducting state, and the lint filtering device 600 can continue to discharge the lint water along the lint discharge water path 240. In this way, the residue of the lint water in the lint filtering device 600 is effectively avoided, and further, the problem of bacterial growth caused by the presence of lint and accumulated water in the lint filtering device 600 and the secondary pollution of the clothes can be prevented.

[0073] In this embodiment, during the drainage stage of the washing program, the washing device guides water from the water storage barrel 100 to the lint filtering device 600, and after filtering, it is discharged. The water path switching device 800 maintains the state of cutting off the lint discharge water path 240.

[0074] Specifically, a water pump 400 is provided between the water storage barrel 100 and the lint filtering device 600 for pumping water from the water storage barrel 100 to the lint filtering device 600. The filtered water outlet 6102 of the lint filtering device 600 can be communicated to the outside of the box body 10 of the washing device, so as to discharge the filtered water.

[0075] More specifically, the bottom of the water storage barrel 100 is communicated with the water inlet end of the water pump 400 through a pump hose 260. The water outlet end of the water pump 400 is connected to an intermediate pipeline 220. The intermediate pipeline 220 extends upward and is connected to the water inlet 6101 of the lint filtering device 600. The filtered water outlet 6102 of the lint filtering device 600 is communicated with a drainage pipeline 250 extending to the outside of the box body 10.

[0076] It can be understood that with the above structure of the washing device, the drainage of the water storage barrel 100 must pass through the lint filtering device 600. Therefore, the drainage stage of the above-mentioned washing program includes both the main washing drainage stage after the main washing stage and the rinsing drainage stage after the rinsing stage.

[0077] During the drainage stage of the washing program, the 400 water pump is started to guide water to the lint filtering device 600. After the washing water carrying lint in the water storage barrel 100 is filtered by the lint filtering device 600, it is then discharged from the washing device along the drainage pipeline 250, which can avoid the problem of lint in the water, especially micro lint, being directly discharged.

[0078] Furthermore, the washing device obtains the water level height in the water storage barrel 100 during the drainage stage. When it is detected that the water level in the water storage barrel 100 drops to the empty water level, the water path switching device 800 is controlled to conduct the lint discharge water path 240. In this way, the lint filtered out by the lint filtering device 600 during this drainage process can be discharged into the lint collection device 500 along with the water flow.

[0079] In a further solution, the interior of the lint collection device 500 is provided with a collection component 560 having a filtering structure. After the lint water enters the lint collection device 500, the filtering structure on the collection component 560, such as a filter screen, can intercept the lint in the lint water to achieve the collection purpose, and the water flow without lint after filtration can be discharged from the lint collection device 500.

[0080] Preferably, both the lint collection device 500 and the water pump 400 are arranged at the bottom of the cabinet 10, and the water outlet on the lint collection device 500 is in communication with the water pump 400. After the lint is filtered out in the lint collection device 500, the lint water can pass through the lint filtering device 600 again by the driving force of the water pump 400 and is finally discharged from the washing device along the drainage pipeline 250.

[0081] The washing device of this embodiment adopts the above structure. The lint collection device 500 is communicated with the water storage barrel 100 through a pump hose 260 and a water pump 400. After the drainage stage of the washing device, the dehydration stage is run. The washing barrel (not shown in the figure) in the water storage barrel 100 is controlled to rotate at a high speed to spin-dry the clothes in the barrel. To prevent the drainage of the lint collection device 500 from flowing back into the water storage barrel 100 through the water pump 400 during the dehydration stage and causing secondary pollution to the clothes, the washing device further executes the following control method.

[0082] As a specific implementation manner, after the water path switching device 800 conducts the lint discharge water path 240 during the drainage stage, before entering the immediately following dehydration stage, the washing device controls the water path switching device 800 to disconnect the lint discharge water path 240.

[0083] As another specific embodiment, after the waterway switching device 800 conducts the lint discharge waterway 240 during the drainage stage, the lint discharge waterway 240 is kept continuously conducted for a first set duration T1, and then the waterway switching device 800 is controlled to disconnect the lint discharge waterway 240. It can be understood that the first set duration T1 does not exceed the time interval between the drainage in the water storage barrel 100 to the empty water level and the start of the subsequent dehydration stage.

[0084] By controlling the waterway switching device 800 to disconnect the lint discharge waterway 240 before the start of the dehydration stage immediately following the drainage stage, it is possible to prevent the lint water from continuing to enter the lint collection device 500 after the start of the dehydration stage, thereby preventing the problem that the lint water in the lint collection device 500 accumulates too much and causes the filtered lint water to flow back into the water storage barrel 100.

[0085] In a specific solution of this embodiment, the washing device only executes the control process of first conducting the lint discharge waterway 240 and then cutting off the lint discharge waterway 240 before the start of the main wash dehydration stage during the main wash drainage stage after the main wash stage. This is because a large amount of lint falls off the clothes during the main wash stage, and the lint filtering device 600 will filter out more lint. During the rinsing stage, no large amount of lint falls off the clothes, so the lint filtering device 600 can not discharge the lint water, and only discharge the lint water once after the final dehydration stage.

[0086] In another specific solution of this embodiment, during the main wash drainage stage after the main wash stage and the rinse drainage stage after the rinsing stage, the washing device both executes the control process of first conducting the lint discharge waterway 240 and then cutting off the lint discharge waterway 240. That is to say, after each drainage, the washing device controls the lint filtering device 600 to discharge the lint filtered from the drainage water flow, which can more effectively avoid the problem of the lint filtering device 600 being blocked by lint.

[0087] In a further solution of this embodiment, the lint filtering device 600 is also used to circularly filter the water in the water storage barrel 100. For this purpose, a return water pipeline 230 for returning water to the water storage barrel 100 is also provided in the washing device, and the filtered water outlet 6102 of the lint filtering device 600 can also be conducted with the return water pipeline 230. In this way, when the water pump 400 works, the water in the water storage barrel 100 can be pumped to the lint filtering device 600, and the water filtered by the lint filtering device 600 can return to the water storage barrel 100 along the return water pipeline 230.

[0088] In order to control the flow direction of the filtered water, in this embodiment, the water path switching device 800 of the washing device includes a switching valve 810 and a on-off valve 820 that are integrally arranged and independently controlled. Among them, the on-off valve 820 is connected to the lint discharge water path 240 to control the on-off of the lint discharge water path 240. The switching valve 810 has one inlet, that is, the filtered water inlet 801, and at least two outlets. The filtered water inlet 801 of the switching valve 810 is communicated with the filtered water outlet 6102 of the lint filtering device 600.

[0089] More specifically, the switching valve 810 has two outlets, namely a circulation outlet 802 and a drainage outlet 803. The filtered water inlet 801 of the switching valve 810 and the filtered water outlet 6102 of the lint filtering device 600 are communicated through a connecting pipeline 280. The circulation outlet 802 of the switching valve 810 is connected to the return water pipeline 230, and the drainage outlet 803 is connected to the drainage pipeline 250.

[0090] The on-off valve 820 has a lint water inlet 804 and a lint water outlet 805. The lint discharge water path 240 is separated by the on-off valve 820 into a front lint discharge section and a rear lint discharge section. Among them, one end of the front lint discharge section is connected to the lint discharge port 6103 of the lint filtering device 600, and the other end is connected to the lint water inlet 804 of the on-off valve 820. One end of the rear lint discharge section is connected to the lint water outlet 805 of the on-off valve 820, and the other end is connected to the lint collection device 500.

[0091] In this embodiment, the fact that the switching valve 810 and the on-off valve 820 are integrally arranged and independently controlled means that the two are arranged in a valve body connected as a whole. There are two independent and non-communicating valve cavities in the valve body, corresponding to the switching valve 810 and the on-off valve 820 respectively. At the same time, the switching valve 810 has a switching motor 811 for controlling the on-off between the filtered water inlet 801 and the circulation outlet 802 and the drainage outlet 803, while the on-off valve 820 has an on-off motor 821 for controlling the on-off between the lint water inlet 804 and the lint water inlet 804. The switching motor 811 and the on-off motor 821 are respectively controlled by the control system of the washing device, and there is no linkage relationship between the two. Among them, the motor bodies of the switching motor 811 and the on-off motor 821 are respectively installed in a motor housing, and the motor housings of the switching motor 811 and the on-off motor 821 can be set as a single piece.

[0092] Adopting the above structure makes the structure for water path control inside the washing device more compact, which is beneficial to saving the installation space occupied by the water path switching device 800.

[0093] Furthermore, a valve plate is provided in the valve cavity of the switching valve 810, so as to divide the valve cavity of the switching valve 810 into a coaxial water inlet cavity and a water outlet cavity, the water inlet cavity is connected with the filtered water inlet 801, and a water outlet connecting the water inlet cavity and the water outlet cavity is provided on the valve plate. A partition plate perpendicular to the valve plate is further provided in the water outlet cavity, so as to divide the water outlet cavity into two sub-water outlet cavities, which are connected one by one with the circulation outlet 802 and the drainage outlet 803. A water outlet is provided on both sides of the partition plate on the valve plate, so as to connect the two sub-water outlet cavities with the water inlet cavity respectively. A switching plate fitted with the valve plate is provided in the water inlet cavity, and a switching port is provided on the switching plate. The switching plate is connected to the switching motor 811, and the switching motor 811 drives the switching plate to rotate, and the switching port is rotated to coincide with or stagger with the water outlet on the valve plate, so as to close or open the water outlet.

[0094] Specifically, when the switching port on the switching plate coincides with the water port on the side where the circulation outlet 802 is located, the filtered water inlet 801 is connected to the circulation outlet 802, and the filtered water discharged by the lint filter device 600 can enter the return water pipeline 230 and flow back to the water storage drum 100. When the switching port on the switching plate coincides with the water port on the side where the drainage outlet 803 is located, the filtered water inlet 801 is connected to the drainage outlet 803, and the filtered water discharged by the lint filter device 600 can enter the drainage pipeline 250 and be discharged from the washing device. When the switching port is staggered with both water ports, the switching valve 810 is in a closed state, that is, the filtered water inlet 801 is not connected to the circulation outlet 802 and the drainage outlet 803.

[0095] Unlike the switching valve 810, the on-off valve 820 described in this embodiment adopts a ball valve structure. This is because the on-off valve 820 is passed through the wire scrap water carrying wire scraps. The ball valve structure can reduce the wire scraps in the wire scrap water from being hooked inside the on-off valve 820, thereby avoiding the problem that the on-off valve 820 cannot be closed due to residual wire scraps, thereby causing the on-off valve 820 to fail to control. The on-off motor 821 is connected to the ball valve core located in the valve cavity of the on-off valve 820. By driving the ball valve core to rotate, the on-off valve 820 can be controlled to be open and closed, and the on-off valve 820 can be kept closed in the power-off state.

[0096] In this embodiment, the control method of the washing device further includes: after the washing device receives the program start instruction, the on-off valve 820 is controlled to close and cut off the lint discharge water path 240, and the switching valve 810 is controlled to keep the filtered water inlet 801 disconnected from the circulation outlet 802 and the drainage outlet 803, and water starts to be introduced into the water drum 100.

[0097] Further, after the water inlet is completed, the washing program enters the main washing stage, and the on-off valve 820 remains closed. When the operation in the above main washing stage reaches the second set duration T2, the washing equipment controls the switching valve 810 to conduct and maintain the connection between the filtered water inlet 801 and the circulation outlet 802, so that the filtered water outlet 6102 of the lint filtering device 600 is continuously conducted with the return water pipeline 230, and controls the water pump 400 to start, and starts the circulating filtration washing.

[0098] In the above solution, during the water inlet process of the washing equipment, the water path switching device 800 remains fully closed. After entering the main washing stage, the on-off valve 820 continues to remain closed, thereby ensuring that when the subsequent circulating filtration washing is carried out, the lint filtering device 600 will not drain water outward from the lint discharge port 6103. After the main washing stage runs for a period of time, the filtered water outlet 6102 and the return water pipeline 230 are conducted, and the water pump 400 is started. This is because at the beginning of washing, there is not much lint falling off the clothes in the washing water. If the washing water is circulated at this time, it will not have much effect, but will cause unnecessary operation of the water pump 400 and resulting losses.

[0099] In a further solution of this embodiment, the self-cleaning function of the lint filtering device 600 is realized by the following specific structure. The lint filtering device 600 includes a filter housing 610, and a filter cylinder 620 rotatably arranged in the filter housing 610. Among them, the water inlet 6101, the filtered water outlet 6102, and the lint discharge port 6103 are all arranged on the filter housing 610. The filter cylinder 620 divides the interior of the filter housing 610 into an outer cavity of the filter cylinder 620 and an inner cavity of the filter cylinder 620, and the filtered water outlet 6102 communicates with the inner cavity of the filter cylinder 620.

[0100] For the lint filtering device 600 with the above structure, the filter cylinder 620 has a filtering structure that can block lint, such as a filter screen. The water flow to be filtered enters the filter housing 610 from the water inlet 6101. The lint is blocked by the filter cylinder 620 and adheres to the outer wall of the filter cylinder 620. The water flow without lint can enter the inner cavity of the filter cylinder 620 and then be discharged from the filtered water outlet 6102. By setting the filter cylinder 620 to be rotatable, the centrifugal force generated by the rotation of the filter cylinder 620 can be used to throw off the lint adhering to the outer wall of the filter cylinder 620, realizing the self-cleaning function of the lint filtering device 600.

[0101] Further, in this embodiment, the circulating filtration washing of the washing equipment includes the following steps:

[0102] (1) The water pump 400 starts and runs continuously for the first preset duration t1;

[0103] (2) The water pump 400 stops running, and the filter cartridge 620 is controlled to continuously rotate in the filter housing 610 for a second preset duration t2;

[0104] (3) Control the filter cartridge 620 to stop rotating, control the water pump 400 to start and continuously run for a first preset duration t1;

[0105] (4) The water pump 400 stops running, and the filter cartridge 620 is controlled to continuously rotate in the filter housing 610 for a second preset duration t2;

[0106] (5) Control the filter cartridge 620 to stop rotating, and after a certain duration, return to step (1).

[0107] The above steps (1) to (5) are continuously executed in a loop until the main washing stage is completed, and then enter the main washing drainage stage.

[0108] More specifically, the lint filtering device 600 further includes a driving motor 660 for driving the filter cartridge 620 to rotate. The driving motor 660 is arranged outside the filter housing 610 and at the other end relative to the end where the filtered water outlet 6102 is located. By controlling the start and stop of the driving motor 660, the rotation or stop of the filter cartridge 620 can be controlled.

[0109] With the above structure, the steps of the washing equipment for cyclic filtration and rinsing are specifically as follows:

[0110] (1) The water pump 400 starts and continuously runs for a first preset duration t1;

[0111] (2) The water pump 400 stops running, the driving motor 660 is started, and the filter cartridge 620 is driven to continuously rotate in the filter housing 610 for a second preset duration t2;

[0112] (3) The driving motor 660 is turned off, the filter cartridge 620 stops rotating, and the water pump 400 is controlled to start and continuously run for a first preset duration t1;

[0113] (4) The water pump 400 stops running, the driving motor 660 is started, and the filter cartridge 620 is driven to continuously rotate in the filter housing 610 for a second preset duration t2;

[0114] (5) The driving motor 660 is turned off, the filter cartridge 620 stops rotating, and after a certain duration, return to step (1).

[0115] In the above solution, during the cyclic filtration and washing process, the operation of the water pump 400 to conduct water filtration to the lint filtration device 600 and the operation of the filter cylinder 620 to rotate and shake off the attached lint are carried out alternately. That is to say, every time after continuous filtration for a period of time, the filter cylinder 620 is driven to rotate to achieve the self-cleaning effect, which can avoid the problem that the lint filtration device 600 is blocked when the lint content in the water is large, resulting in its inability to continue filtering.

[0116] Meanwhile, in the cyclic filtration and washing process, step (5) is set, that is, the interval period when the water pump 400 does not operate and the filter cylinder 620 does not rotate. The certain duration in step (5) can be a fixed set duration, or it can gradually shorten with the increase of the operation duration of the main washing stage, and the certain duration of each interval gradually shortens. In this embodiment, the first preset duration t1, the second preset duration t2, and the proportion of the value of the certain duration in step (5) in the total operation duration of the main washing stage can be reasonably set according to the previous tests, so as to minimize the total operation duration of the water pump 400 and the drive motor 660 while ensuring the filtration effect, and thus reduce the loss of the water pump 400 and the drive motor 660.

[0117] In a further solution of this embodiment, when the washing program runs to the drainage stage, the control switching valve 810 is controlled to conduct the filtered water outlet 6102 of the lint filtration device 600 and the drainage pipeline 250, and the water pump 400 is controlled to start to filter and discharge the water in the water storage cylinder 100.

[0118] Specifically, the above-mentioned drainage stage includes the main washing drainage stage and the rinsing drainage stage. When the washing program runs to the main washing drainage stage or the rinsing drainage stage, the on-off valve 820 continues to remain in the closed state, and the switching plate in the switching valve 810 is driven to rotate by the switching motor 811, so that the filtered water inlet 801 and the drainage outlet 803 are conducted. Then, the water pump 400 is started to pump water from the water storage cylinder 100, and the water in the water storage cylinder 100 can be filtered and discharged along the drainage pipeline 250 from the washing equipment.

[0119] As a further solution, in the rinsing stage of the washing program, the on-off valve 820 remains in the closed state, and the control switching valve 810 is controlled to conduct the filtered water outlet 6102 of the lint filtration device 600 and the return water pipeline 230 and keep it; the water pump 400 operates for cyclic filtration and rinsing.

[0120] In the above solution, the cyclic filtration and rinsing can adopt the same step process as the cyclic filtration and washing. Specifically, after running for a period of time in the rinsing stage, the switching valve 810 is controlled to actuate and the water pump 400 is started to begin cyclic filtration and rinsing. During the cyclic filtration and rinsing process, the water pump 400 and the drive motor 660 are alternately operated. Every time after filtering for a period of time, the lint filtering device 600 is controlled to perform self-cleaning. After the water pump 400 and the drive motor 660 are alternately operated twice, both are shut down for a period of time and then alternately operated again. The above process is cycled until the rinsing stage ends.

[0121] Furthermore, during the water inlet process before the rinsing stage starts, the on-off valve 820 and the switching valve 810 can be controlled to remain in the closed state.

[0122] As another further solution, since the amount of lint falling off the clothes during the rinsing stage is very small, the water in the water storage barrel 100 is no longer cyclically filtered during the rinsing stage.

[0123] Specifically, during the water inlet process before the rinsing stage starts and during the operation of the rinsing stage, the washing device controls the on-off valve 820 and the switching valve 810 to remain in the closed state, and the water pump 400 remains closed and does not operate. When it runs to the rinsing and draining stage, the washing device controls the switching motor 811 to drive the switching plate to rotate, so that the switching valve 810 is switched to the state where the filtered water inlet 801 is communicated with the drainage outlet 803, and then the water pump 400 is started to drain water.

[0124] The following is combined with Figure 7 as shown, to describe the control process of the washing device in this embodiment in detail and completely.

[0125] When the washing device is in the shutdown state, the on-off valve 820 in the water path switching device 800 remains open, and the switching valve 810 remains closed. When the washing device is powered on and receives the program start instruction, the washing program is started, the on-off valve 820 is controlled to be closed in place, and then the water inlet operation is started.

[0126] After the water inlet is completed, the main washing stage of the washing program starts. When the main washing stage runs to reach the second set duration T2, the filtered water inlet 801 of the switching valve 810 is controlled to be communicated with the circulation outlet 802, and the water pump 400 is started to pump water to the lint filtering device 600. The filtered water enters the return water pipeline 230 through the switching valve 810 of the water path switching device 800 and then returns to the water storage barrel 100.

[0127] After the water pump 400 starts in the main washing stage, the water pump 400 operates in a manner that it continuously runs for a first preset duration t1, then continuously shuts down for a second preset duration t2, then continuously runs for the first preset duration t1 again, and then continuously shuts down for the second preset duration t2 again. During the second preset duration t2 when the water pump 400 is continuously shut down, the drive motor 660 of the lint filtering device 600 operates to drive the filter cylinder 620 to continuously rotate within the filter housing 610. The above process is carried out once every certain period of time in the main washing stage until the main washing stage ends. During the interval period, both the water pump 400 and the drive motor 660 remain in the off state.

[0128] When the main washing stage ends and the washing program enters the main washing drainage stage, the on-off valve 820 still remains in the closed state. The washing equipment controls the switching valve 810 to conduct the filtered water inlet 801 and the drainage outlet 803, starts the water pump 400 and continuously runs it. The water in the water storage barrel 100 flows into the drainage pipeline 250 through the switching valve 810 and is discharged from the washing equipment. During the drainage process, the washing equipment continuously obtains the water level height in the water storage barrel 100. When it detects that the water level in the water storage barrel 100 drops to the empty water level, it controls the on-off valve 820 to open so as to conduct the lint discharge water path 240. The lint filtered out in the lint filtering device 600 can then flow out through the lint discharge port 6103 along with the water flow and flow downward under the action of gravity into the lint collection device 500. After a first set duration T1, the washing equipment controls the on-off valve 820 to close and continues to run the subsequent main washing dehydration stage according to the set time sequence of the washing program.

[0129] In the above main washing drainage stage, the water pump 400 continues to remain in the running state after the on-off valve 820 is opened, and the water pump 400 is shut down when the main washing dehydration stage is completed or nearly completed. Correspondingly, the switching valve 810 maintains the state of conducting the filtered water inlet 801 and the drainage outlet 803.

[0130] After the main washing dehydration stage is completed, the washing equipment starts to perform rinsing water inlet. At this time, it controls the switching valve 810 to switch to the closed state, and the on-off valve 820 remains in the closed state. After the water inlet is completed, if cyclic filtration rinsing is required, it can control the switching valve 810 to switch to the state of conducting the filtered water inlet 801 and the circulation outlet 802, and start the water pump 400 for circulation. If cyclic filtration rinsing is not required, then when it runs to the rinsing drainage stage, it controls the filtered water inlet 801 and the drainage outlet 803 of the switching valve 810 to be conducted, and then starts the water pump 400 for drainage. During the drainage process, it can open the on-off valve 820 and maintain it for the first set duration T1 after detecting the empty water level to discharge the lint water, and then continue to run the subsequent rinsing dehydration stage; or it can not discharge the lint water and control the on-off valve 820 to remain in the closed state until the rinsing dehydration stage is completed.

[0131] The above-mentioned rinsing stage, rinsing and draining stage and rinsing and dehydrating stage can be performed once or multiple times according to the setting of the washing program, and then the washing program enters the final dehydrating stage.

[0132] In the final dehydration stage, the switching valve 810 is in a state where the filtered water inlet 801 is connected to the drain outlet 803, and the on-off valve 820 is in a closed state until the final dehydration stage is completed. At this time, the washing device turns off the water pump 400, controls the switching valve 810 to switch to a closed state, and controls the on-off valve 820 to open again, so that the residual lint and accumulated water in the lint filtering device 600 are discharged into the lint collecting device 500 through the on-off valve 820 and the lint discharge waterway 240.

[0133] After that, the water circuit switching device 800 does not operate any more, that is, the switching valve 810 remains closed, and the on-off valve 820 remains open, and the washing program ends. When the washing device receives a program start instruction again, the on-off valve 820 is controlled to close.

[0134] In this embodiment, the washing device adopts the above-mentioned control process, and can guide the lint water carrying lint discharged by the lint filter device 600 and the filtered water without lint to different pipelines respectively, especially the lint water carrying lint can be introduced into the lint collection device 500, which can improve the collection efficiency of micro-lint and prevent the micro-lint from entering the nature with the drainage of the washing device. The control of the on-off valve 820 in the water circuit switching device 800 adopts the method of keeping the on-off valve 820 normally open when the washing device is turned off, ensuring that the lint and accumulated water in the lint filter device 600 can be fully discharged, effectively avoiding the residue of lint and accumulated water in the lint filter device 600, and thus preventing the residue of lint and accumulated water from causing bacteria to grow and causing secondary contamination of clothes.

[0135] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A control method for a washing device, characterized in that, the washing device includes: a water storage cylinder; a lint filtering device communicated with the water storage cylinder for filtering washing water carrying lint; the lint filtering device has a lint discharge port for discharging the lint filtered out from the washing water along with the water flow; the washing device further includes a lint discharge water path connected to the lint discharge port; and a water path switching device for controlling the on-off of the lint discharge water path; when the washing program of the washing device runs to the end of the final dehydration stage, control the water path switching device to conduct the lint discharge water path; when the washing program ends, the water path switching device maintains the state of conducting the lint discharge water path; when the washing device receives a program start instruction, control the water path switching device to cut off the lint discharge water path.

2. The control method for the washing device according to claim 1, characterized in that, in the drainage stage of the washing program, water is guided from the water storage cylinder to the lint filtering device, and after filtration, it is discharged from the washing device. The water path switching device maintains the state of cutting off the lint discharge water path; when it is detected that the water level in the water storage cylinder drops to the empty water level, control the water path switching device to conduct the lint discharge water path.

3. The control method for the washing device according to claim 2, characterized in that, after the water path switching device conducts the lint discharge water path in the drainage stage, before entering the dehydration stage, the washing device controls the water path switching device to disconnect the lint discharge water path; alternatively, after the water path switching device conducts the lint discharge water path in the drainage stage, the lint discharge water path is maintained to be continuously conducted for a first set duration T1, and then the water path switching device is controlled to disconnect the lint discharge water path.

4. The control method for the washing device according to claim 2 or 3, characterized in that, the drainage stage includes the drainage stage after the main washing stage; alternatively, the drainage stage includes the drainage stage after the main washing stage and the drainage stage after the rinsing stage.

5. The control method for the washing device according to any one of claims 1-3, characterized in that, the lint filtering device has a filtered water outlet for discharging the filtered water flow; the water path switching device includes a switching valve and a on-off valve that are integrally arranged and independently controlled. The on-off valve is connected to the lint discharge water path, and the switching valve has one inlet and at least two outlets. The inlet of the switching valve is communicated with the filtered water outlet; after the washing device receives a program start instruction, control the on-off valve to close and cut off the lint discharge water path, control the switching valve to maintain the state where its inlet is not connected to each outlet, and start to fill water into the water storage cylinder.

6. The control method for the washing device according to claim 5, characterized in that, the washing device further includes a water pump for guiding water from the water storage cylinder to the lint filtering device; the switching valve has two outlets, one of which is connected to a return water pipe for returning water to the water storage cylinder, and the other is connected to a drainage pipe for discharging water outwards; after the water filling is completed and the washing program enters the main washing stage, the on-off valve remains closed; When the main washing stage runs for the second set duration T2, control the switching valve to conduct and maintain the connection between the filtered water outlet of the lint filtering device and the return water pipeline, and control the water pump to start to perform circulating filtration and washing.

7. The control method of the washing equipment according to claim 6, wherein, the lint filtering device includes a filter housing and a filter cartridge rotatably arranged in the filter housing, and the filtered water outlet communicates with the internal cavity of the filter cartridge; the circulating filtration and washing includes the following steps: (1) Start the water pump and continuously operate for the first preset duration t1; (2) Stop the water pump, and control the filter cartridge to continuously rotate in the filter housing for the second preset duration t2; (3) Control the filter cartridge to stop rotating, control the water pump to start and continuously operate for the first preset duration t1; (4) Stop the water pump, and control the filter cartridge to continuously rotate in the filter housing for the second preset duration t2; (5) Control the filter cartridge to stop rotating, after a certain duration, return to step (1).

8. The control method of the washing equipment according to claim 6, wherein, when the washing program runs to the drainage stage, control the switching valve to conduct the filtered water outlet of the lint filtering device and the drainage pipeline, and control the water pump to start to filter and discharge the washing water in the water storage barrel.

9. The control method of the washing equipment according to claim 6, wherein, in the rinsing stage of the washing program, the on-off valve remains in the closed state, control the switching valve to conduct and maintain the connection between the filtered water outlet of the lint filtering device and the return water pipeline; the water pump operates to perform circulating filtration and rinsing.

10. A washing equipment, wherein, it executes the control method of the washing equipment according to any one of claims 1-9.

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