A washing machine control method and washing machine

Abstract

The present invention discloses a control method and a washing machine, the washing machine comprising: a water drum; a circulating filter pipeline, the water inlet and the water outlet of which are respectively connected to the water drum, and a circulating pump and a filtering device are arranged on the pipeline; the filtering device comprises a filtering cavity, which has a water inlet and a filtered water outlet; a filtering mechanism, which is rotatably arranged inside the filtering cavity, and filters the water entering the filtering cavity; the control method comprises: adding a clothing treatment agent into the water drum; turning on the circulating pump, so that the water in the water drum circulates through the filtering device; controlling the filtering mechanism to rotate in the filtering cavity at a first set speed to dissolve the clothing treatment agent in the water. The filtering device of the present invention itself has the function of removing lint from the water. After adding the clothing treatment agent, the filtering mechanism can also be rotated to stir the water flow, so that the clothing treatment agent in the water is more fully dissolved, thereby improving the washing effect. The filtering device can realize multiple functions and save space.

Description

Technical Field

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

[0002] In the prior art, the general structure of a drum washing machine is to set a water drum drain pipe at the lowest point of the water drum, which is used to connect a drain pump to drain water outward. The water drum drain pipe is generally a hose, which has a certain volume and can hold a certain amount of water. When the drum washing machine is working, the clothing treatment agent is flushed into the outer drum by the incoming water flow. If it is not fully dissolved, it will be flushed into the space inside the water drum drain pipe. It is difficult to continue to dissolve and contact the clothes in the subsequent washing process. It will be directly discharged with the drainage water flow during drainage, causing waste.

[0003] Most current drum washing machines first add a certain amount of water into the water drum, fill the water drum drain pipe with water, and then add the clothing treatment agent, thereby reducing the accumulation of undissolved clothing treatment agent in the water drum drain pipe. However, for granular washing powder, since it cannot be fully dissolved in a short time, it will still sink under the action of gravity, causing some undissolved washing powder particles to fall into the water drum drain pipe. This will cause the actual concentration of washing powder to be low during the washing process, affecting the washing effect of clothes.

[0004] Chinese patent application number 201210497315.2 discloses a control method for a drum washing machine with agitated water flow, comprising the following steps: S10: detecting whether the water level in the drum of the washing machine has dropped; S20: detecting whether the clothes with water in the drum are evenly distributed, and determining the eccentricity; S30: accelerating the inner drum to a first preset speed, agitating the water flow at a speed greater than the normal washing speed, and bringing out the water and washing powder in the drain hose and returning to the drum of the washing machine; S40: repeating step S30 N times, bringing out the water and washing powder in the drain hose and returning them repeatedly, so that the washing powder is fully and evenly dissolved in the water; S50: rotating the inner drum at the normal washing speed, and starting washing.

[0005] However, in the above scheme, the dissolution effect of the washing powder is improved by controlling the rotation of the inner drum, but since there is a large amount of water and clothes in the inner drum, it is necessary to detect the eccentricity to prevent large vibrations during rotation. On the other hand, the inner drum drives the clothes and water in the drum to rotate together, and due to the large overall mass, the motor is prone to stalling.

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

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a control method for a washing machine and a washing machine. A circulating filtering pipeline with a filtering device is arranged on the washing machine. After the clothes treating agent is added, the water in the water drum can be driven to circulate continuously through the filtering device by turning on the circulating pump. The agitation of the water flow is enhanced by controlling the rotation of the filtering mechanism in the filtering device, so that the clothes treating agent in the water can be dissolved faster and more fully, which is beneficial to improving the washing effect of the clothes.

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

[0009] A method for controlling a washing machine, the washing machine comprising:

[0010] water container;

[0011] A circulating filtration pipeline, the water inlet and outlet of which are respectively connected to the water storage cylinder, and a circulating pump and a filtration device are arranged on the pipeline;

[0012] The filtering device comprises

[0013] A filter chamber having a water inlet and a filtered water outlet;

[0014] The filter mechanism is rotatably disposed inside the filter cavity to filter the water entering the filter cavity;

[0015] The control method comprises:

[0016] Add clothing treatment agent to the water drum;

[0017] Turn on the circulation pump to circulate the water in the water storage cylinder through the filter device;

[0018] The filter mechanism is controlled to rotate in the filter cavity at a first set speed to dissolve the clothes treating agent in the water.

[0019] Furthermore, the filter mechanism continuously rotates at the first set speed for a preset time period, and then the filter mechanism is controlled to stop rotating.

[0020] Furthermore, after the filter mechanism stops rotating, the circulation pump remains turned on, and the washing machine performs circulation filtering washing / rinsing.

[0021] Furthermore, after washing / rinsing is finished, the filter mechanism is controlled to rotate in the filter cavity at a second set speed to remove filter impurities on the surface of the filter mechanism; the first set speed is greater than the second set speed;

[0022] Preferably, the first set rotation speed is 100-800 rpm.

[0023] Further, the washing machine determines the value of the first set speed according to the washing parameters in the currently running washing program;

[0024] Preferably, the washing parameters include the water temperature in the water drum, and / or whether the heating function of the washing machine is turned on;

[0025] More preferably, the value of the first set speed decreases as the water temperature in the water container increases;

[0026] And / or, the value of the first set speed decreases when the heating function of the washing machine is turned on.

[0027] Furthermore, the washing machine determines the value of the preset time length according to the washing parameters in the currently running washing program;

[0028] Preferably, the washing parameters include the water level in the water drum, and / or the water temperature in the water drum, and / or whether the washing machine has a heating function turned on;

[0029] More preferably, the value of the preset time length increases as the water level in the water storage cylinder increases;

[0030] And / or, the value of the preset time length is shortened as the water temperature in the water container increases;

[0031] And / or, the value of the preset time length is shortened when the heating function of the washing machine is turned on.

[0032] Furthermore, before starting the circulation pump, the process also includes: if the water level in the water storage drum is greater than a preset water level, starting the circulation pump; otherwise, waiting for the water level in the water storage drum to reach a preset water level before starting the circulation pump.

[0033] Furthermore, the filtering device further comprises a driving mechanism, which is connected to the filtering mechanism and is used to drive the filtering mechanism to rotate in the filtering cavity;

[0034] After the circulation pump is turned on, the washing machine determines the value of the first set speed according to the washing parameters in the currently running washing program;

[0035] The driving mechanism is turned on to drive the filtering mechanism to rotate at a first set speed.

[0036] Another object of the present invention is to provide a washing machine, which adopts the control method of the washing machine described above.

[0037] Furthermore, cleaning particles are arranged in the filter cavity to rub and collide with the water flow to accelerate the dissolution of the clothing treatment agent.

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

[0039] In the present invention, the filter device can circulate and filter the water in the water drum during the washing process, thereby removing the filaments and other filter impurities in the water, and improving the washing effect of the clothes. After the clothes treatment agent is added, the circulation pump is turned on to transport the water in the water drum to the filter device, and the filter mechanism is controlled to rotate at the same time, which can strengthen the stirring of the water flow inside the filter device, so that the clothes treatment agent therein is more fully and evenly dissolved in the water, and then transported back to the water drum, which is conducive to accelerating the dissolution of the clothes treatment agent, improving the utilization rate of the clothes treatment agent, and thus improving the washing effect. The filter device can realize two different functions in one, saving the space inside the washing machine.

[0040] In the present invention, the washing machine adjusts the rotation speed and rotation time of the filter mechanism according to the washing parameters, so as to complete the full dissolution of the clothing treatment agent as quickly as possible under the current washing parameters, thereby ensuring the working efficiency of the washing machine and saving the washing time of the washing machine.

[0041] In the present invention, the washing machine controls the circulation pump to start after the water level in the water drum reaches a preset water level, so as to prevent the circulation pump from sucking in air and generating operating noise due to insufficient water in the water drum.

[0042] In the present invention, cleaning particles are arranged inside the filter cavity. The cleaning particles move with the water flow. On the one hand, the inner wall of the filter cavity and the outer wall of the filter mechanism can be cleaned by friction and collision during the circulation filtration process, thereby preventing the filter device from being blocked due to the deposition of filtered impurities and affecting the filtration efficiency. On the other hand, the agitation force of the water flow in the filter cavity can be further enhanced during the process of dissolving the clothing treatment agent, thereby further accelerating the dissolution efficiency of the clothing treatment agent.

[0043] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0045] Figure 1 is a schematic structural diagram of a washing machine in an embodiment of the present invention;

[0046] Figure 2 The present invention Figure 1 The enlarged schematic diagram of point A in the middle;

[0047] Figure 3 is a flow chart of a control method for a washing machine in Embodiment 1 of the present invention;

[0048] Figure 4 is a schematic diagram of a washing machine dissolving a clothes treating agent in Embodiment 1 of the present invention;

[0049] Figure 5 is a schematic diagram of a washing machine performing a sewage discharge operation according to an embodiment of the present invention;

[0050] Figure 6 The present invention Figure 5 The enlarged schematic diagram of point B in the middle;

[0051] Figure 7 is a schematic structural diagram of a baffle in Embodiment 2 of the present invention;

[0052] Figure 8 is a schematic diagram of the structure of the filtering device in the third embodiment of the present invention;

[0053] Fig. 9 The present invention Figure 8 Schematic diagram of the CC section.

[0054] In the figure: 10, box body; 100, water cylinder; 110, window pad; 120, drum; 210, drainage pipeline; 220, circulation pipeline; 230, return pipeline; 231, return control valve; 240, sewage pipeline; 241, sewage control valve; 250, external discharge pipeline; 260, water cylinder drainage pipe; 270, switching device; 400, circulation pump; 500, recovery device; 501, filter impurities; 510, shell; 520, filter assembly; 531, first chamber; 532, second chamber;

[0055] 600, filter device; 601, first limiting surface; 602, second limiting surface; 603, third limiting surface; 604, fourth limiting surface; 605, fifth limiting surface; 606, sixth limiting surface; 610, filter cavity; 6101, water inlet; 6102, filtered water outlet; 6103, sewage outlet; 6104, installation port; 611, sealing support portion; 612, sleeve portion; 613, reinforcing rib; 620, filter mechanism; 621, water outlet joint; 622, rotating support portion; 623, filter support portion; 624, motor mounting portion; 625, filter; 631, first bearing; 632, second bearing; 641, first sealing member; 642, second sealing member; 643, third sealing member; 650, filter chamber flange; 651, connecting portion; 652, plug-in portion; 653, through-port; 660, driving mechanism; 680, cleaning particles; 690, baffle; 691, water hole; 692, through hole.

[0056] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0058] In the description of the present invention, it should be noted that the terms "up", "down", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0059] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" 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 direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] Embodiment 1

[0061] like Figure 1 and 2 As shown, the washing machine described in this embodiment includes:

[0062] Water container 100;

[0063] The water inlet and outlet of the circulating filtering pipeline are respectively connected to the water container 100, and a circulating pump 400 and a filtering device 600 are arranged thereon.

[0064] In this embodiment, the filter device 600 is disposed between the water outlet end of the circulation pump 400 and the water outlet end of the circulation filter pipeline, and the filter device 600 specifically includes:

[0065] The filter chamber 610 has a water inlet 6101 and a filtered water outlet 6102;

[0066] The filter mechanism 620 is rotatably disposed inside the filter cavity 610 to filter the water entering the filter cavity 610 .

[0067] Specifically, the water cylinder 100 is provided with a water cylinder drain pipe 260 connected to the water inlet of the circulation pump 400, the water outlet of the circulation pump 400 is connected to the drain pipe 210, the drain pipe 210 is further connected to the circulation pipe 220, and the water outlet of the circulation pipe 220 is connected to the water inlet 6101 of the filter device 600. When the circulation pump 400 is turned on, the water in the water cylinder 100 passes through the water cylinder drain pipe 260, the drainage pipe 210 of the circulation pump 400 and the circulation pipe 220 in sequence and enters the filter device 600.

[0068] The filtered water outlet 6102 of the filter device 600 is used to discharge the filtered water, and is connected to the water storage cylinder 100 through the return water pipeline 230, which is specifically connected to the window pad 110 at the cylinder mouth of the water storage cylinder 100. The return water pipeline 230 is also provided with a return water control valve 231 for controlling the on and off of the return water pipeline 230.

[0069] It is understandable that a water return port may be provided on the wall of the water storage cylinder, and the water outlet of the water return pipe may be connected to the water return port to directly return water to the water storage cylinder.

[0070] The washing machine of this embodiment also includes a main water inlet pipe for connecting an external water source with the water drum. In another scheme, the water outlet end of the return pipe can also be connected to the main water inlet pipe, for example, connected to a detergent box arranged on the main water inlet pipe, and the filtered water returns to the water drum through the detergent box.

[0071] In detail, the filter mechanism 620 divides the interior of the filter chamber 610 into an outer chamber and an inner chamber, wherein the water inlet 6101 is connected to the outer chamber, and the filtered water outlet 6102 is connected to the inner chamber. Under the action of the circulation pump 400, the water in the water cylinder 100 enters the outer chamber through the water inlet 6101, enters the inner chamber through the filter mechanism 620 to be filtered, and the wire scraps carried in the water adhere to the outer wall of the filter mechanism 620. The return water control valve 231 is in an open state, and the filtered water is finally discharged from the filtered water outlet 6102 and returns to the water cylinder 100 through the return water pipeline 230.

[0072] In this embodiment, the filter device 600 can not only be used for circulating filtration, but also assist the dissolution process of the clothing treatment agent. Figure 3 and Figure 4 As shown, the control method of the washing machine in this embodiment includes:

[0073] Putting clothes treating agent into the water drum 100;

[0074] Turn on the circulation pump 400 to circulate the water in the water storage cylinder 100 through the filter device 600;

[0075] The filter mechanism 620 is controlled to rotate in the filter cavity 610 at a first set speed to dissolve the clothes treating agent in the water.

[0076] The clothes treating agent described in this embodiment includes but is not limited to washing powder, washing block or washing liquid used in the washing stage, and softener used in the rinsing stage, etc. Especially for solid washing powder or washing block which dissolves slowly in water, the effect of accelerating dissolution is more significant.

[0077] After the clothes treatment agent is put into the water drum 100, part of the clothes treatment agent may sink into the inner space of the water drum drain pipe 260. If washing or rinsing is started directly, this part of the clothes treatment agent cannot be fully dissolved in the water and cannot act on the clothes, affecting the washing effect.

[0078] In this embodiment, after the clothes treatment agent is added, the circulation pump 400 is turned on, and the return water control valve 231 is in an open state, so that the clothes treatment agent sunk into the water storage drum drain pipe 260 can be returned to the water storage drum 100 with the water circulation, which is conducive to the clothes treatment agent being more fully and evenly dispersed in the water. At the same time, during the circulation process, the filter mechanism 620 rotates in the filter cavity 610, stirring the water in the filter cavity 610, which is conducive to making the clothes treatment agent more fully dissolved in the filter cavity 610, and then returning to the water storage drum 100, which can accelerate the dissolution of the clothes treatment agent, improve the utilization rate of the clothes treatment agent, and thus improve the washing effect of the clothes.

[0079] The filter device 600 of this embodiment can be used for circulating filtration of the washing machine and can also accelerate the dissolution of the laundry treatment agent in water. The same structure realizes two different functions, saving the space inside the washing machine. On the other hand, after the filter device 600 has been used for a long time and the filtering effect has deteriorated, it can still provide the function of accelerating the dissolution of the laundry treatment agent, avoiding the filter device 600 from being unable to play any role and wasting space inside the washing machine.

[0080] It should be noted that the control method of this embodiment can also be used for other washing equipment that requires the addition of washing reagents, such as nursing machines, dishwashers, etc.

[0081] In this embodiment, the filter device 600 further includes a driving mechanism 660, which is connected to the filter mechanism 620 and is used to drive the filter mechanism 620 to rotate in the filter cavity 610. After the circulation pump 400 is turned on, the filter mechanism 620 is driven to rotate at a first set speed by turning on the driving mechanism 660 and controlling the working parameters of the driving mechanism 660.

[0082] In a further solution of this embodiment, the filter mechanism 620 rotates continuously at the first set speed for a preset time, and then the filter mechanism 620 is controlled to stop rotating.

[0083] Furthermore, after the filter mechanism 620 stops rotating, the circulation pump 400 remains turned on, and the washing machine performs circulation filtering washing / rinsing.

[0084] In the above scheme, the preset time is the time required to ensure that the clothes treatment agent is fully dissolved. The washing machine controls the rotation time of the filter mechanism 620, that is, the working time of the driving mechanism 660, and stops the rotation of the filter mechanism 620 after the clothes treatment agent is fully dissolved. When the washing machine enters the washing / rinsing stage, the circulation pump 400 remains turned on, driving the water in the water drum 100 to circulate through the filter device 600 for filtration. The filter mechanism 620 remains stationary during the circulation and filtration process, which is conducive to the smooth discharge of the filtered water.

[0085] In detail, the drum 120 is coaxially arranged in the water holding drum 100 for holding the laundry. After the filter mechanism 620 stops rotating, the washing machine controls the drum 120 to rotate at a set rotation-stop ratio to perform laundry washing / rinsing.

[0086] In a specific solution of this embodiment, the washing machine determines the value of the preset time length according to the washing parameters in the currently running washing program.

[0087] The washing parameters include the water level in the water drum 100, and / or the water temperature in the water drum 100, and / or whether the heating function of the washing machine is turned on.

[0088] In detail, the value of the preset time length increases as the water level in the water drum 100 increases. The higher the water level, the greater the amount of water in the water drum 100, and under the condition of a certain water circulation flow rate, the longer the time required for the water in the water drum 100 to fully circulate. At the same time, a higher water level generally corresponds to a larger amount of clothing treatment agent, and thus a longer time required for the clothing treatment agent to fully dissolve.

[0089] The value of the preset time length is shortened as the water temperature in the water drum 100 increases, and the value of the preset time length is shortened when the washing machine turns on the heating function. Generally, the dissolution rate of the clothing treatment agent in water increases as the water temperature increases. In this embodiment, the higher the water temperature in the water drum 100, the shorter the value of the rotation time length can be; and when the washing machine turns on the heating function, the value of the rotation time length can be shorter than when the heating function is not turned on.

[0090] In the above scheme, the rotation time of the filter mechanism 620 is controlled by the laundry parameters. Under the premise of ensuring that the clothing treatment agent in the water is fully dissolved, the time spent in the process of dissolving the clothing treatment agent is made as short as possible, which helps to shorten the overall running time of a washing program of the washing machine and improve the user experience.

[0091] In this embodiment, the washing machine performs a self-cleaning operation after washing / rinsing, including: closing the return water control valve 231, controlling the filter mechanism 620 to rotate in the filter cavity 610 at a second set speed, and removing filtered impurities on the surface of the filter mechanism 620.

[0092] Specifically, the driving mechanism 660 is turned on to drive the filter mechanism 620 to rotate, so that the filtered impurities such as wire scraps attached to the outer wall of the filter mechanism 620 are peeled off from the outer wall of the filter mechanism 620 under the action of centrifugal force. At this time, since the return water control valve 231 is closed, the water in the filter cavity 610 does not flow out from the filtered water outlet 6102. The rotating filter mechanism 620 can also stir the water flow in the filter cavity 610, and the turbulent water flow formed will cause a certain impact force on the outer wall of the filter mechanism 620, and can also cause the wire scraps to fall off. The wire scraps peeled off from the surface of the filter mechanism 620 are integrated into the water in the filter cavity 610.

[0093] The first set speed of the filter mechanism 620 is greater than the second set speed. For example, the first set speed is 100-800 rpm, and the second set speed is 50-80 rpm.

[0094] In a further solution of this embodiment, the washing machine determines the value of the first set speed according to the washing parameters in the currently running washing program.

[0095] Specifically, the value of the first set speed decreases as the water temperature in the water drum 100 increases, and the value of the first set speed decreases when the washing machine turns on the heating function. The faster the speed of the filter mechanism 620, the greater the force of stirring the water flow, and the more significant the effect of accelerating the dissolution of the clothing treatment agent. Since the dissolution rate of the clothing treatment agent in water increases with the increase of the water temperature, in this embodiment, the higher the water temperature in the water drum 100, the lower the value of the first set speed can be; and when the washing machine turns on the heating function, the value of the first set speed can be lower than when the heating function is not turned on.

[0096] The above scheme prevents the filter mechanism 620 from rotating at too high a speed while ensuring that the clothing treatment agent dissolves as quickly as possible, thereby preventing the filter mechanism 620 from rotating at too high a speed to accelerate the wear and aging of the internal structure of the filter device 600, resulting in a shortened life of the filter device 600.

[0097] In a further solution of this embodiment, before starting the circulation pump 400, the process also includes: if the water level in the water cylinder 100 is greater than a preset water level, starting the circulation pump 400; otherwise, waiting for the water level in the water cylinder 100 to reach a preset water level before starting the circulation pump 400.

[0098] The clothes treatment agent is generally added during the water intake process of the washing machine. In this embodiment, the circulation pump 400 is turned on after the washing machine has completed the addition of the clothes treatment agent. However, since the washing machine has not completed the water intake process under normal circumstances at this time, the actual water level in the water drum 100 has not yet reached the set washing / rinsing water level. In this embodiment, the actual water level in the water drum 100 is first judged before the circulation pump 400 is turned on. The circulation pump 400 is turned on only when the actual water level reaches the preset water level, which can prevent the water in the water drum 100 from being too low and the circulation pump 400 from sucking in air to generate operating noise.

[0099] In this embodiment, after the circulation pump 400 is turned on, the washing machine determines the value of the first set speed and the value of the preset time according to the washing parameters in the currently running washing program;

[0100] The driving mechanism 660 is turned on to drive the filtering mechanism 620 to rotate at a first set rotation speed.

[0101] In detail, Figure 3 As shown, the control method of the washing machine in this embodiment includes the following steps:

[0102] S1. Add clothing treatment agent;

[0103] S2: Clothes treatment agent is added and the circulation pump is turned on;

[0104] S3, determining the operating parameters of the driving mechanism according to the washing parameters, including the value of the first set speed and the value of the preset time;

[0105] S4, turning on the driving mechanism to drive the filtering mechanism to rotate at a first set speed;

[0106] S5. When the preset time is reached, the driving mechanism is turned off and the filtering mechanism stops rotating.

[0107] The washing machine of this embodiment executes the above steps S1 to S5 in sequence during the water intake stage when the clothing treatment agent needs to be added, and performs circulating filtering washing / rinsing after the water intake is completed, including performing a circulating filtering operation: the circulating pump 400 remains in the turned-on state, the return water control valve 231 remains open, and the water in the water drum 100 is filtered by the filtering device 600 and then returns to the water drum 100.

[0108] In another solution of this embodiment, step S1 can also be performed during the water inlet process, and steps S2 to S5 can be performed in sequence after the water inlet is completed. After step S5 is completed, the washing machine performs cyclic filtering washing / rinsing.

[0109] In this embodiment, a sewage outlet 6103 is also provided on the filter cavity 610 of the filter device 600, which is connected to the outer chamber in the filter cavity 610 and is used to discharge the filtered impurities such as wire scraps. The sewage outlet 6103 is connected to the sewage pipe 240, and the sewage pipe 240 is provided with a sewage control valve 241 to control its on and off.

[0110] After washing / rinsing, the washing machine performs a self-cleaning operation to remove the filter impurities such as thread scraps attached to the filter mechanism 620, so that the thread scraps are integrated into the water in the filter cavity 610. When performing the self-cleaning operation, the circulation pump 400 can be turned off, and the sewage control valve 241 can be controlled to remain closed so that the water in the filter cavity 610 does not flow out. The circulation pump 400 can also be controlled to remain open, and the sewage control valve 241 can be opened to guide the water in the water storage drum 100 into the filter device 600 to flush and clean the outer wall of the filter mechanism 620, and then discharged through the sewage outlet 6103.

[0111] like Figure 5 and Figure 6 As shown, after the self-cleaning operation is completed, the washing machine also performs a sewage discharge operation, including: closing the return water control valve 231, opening the sewage control valve 241 to connect the sewage pipe 240, and discharging the sewage carrying lint in the filter device 600 through the sewage outlet 6103.

[0112] Through the above process, the filtering device 600 can accelerate the dissolution process of the clothing treatment agent after the clothing treatment agent is added to the washing machine, circulate and filter the water in the water drum 100 during the washing / rinsing process to remove the lint in the water, and autonomously clean and discharge the attached lint after the washing / rinsing is completed, so that the next cycle filtering operation can be performed.

[0113] In a further solution of this embodiment, the washing machine also includes a recovery device 500, which is connected to the water outlet end of the sewage pipe 240 and is used to collect the discharged filtered impurities 501 such as thread scraps.

[0114] In the above scheme, the recovery device 500 is provided to collect the filtered impurities 501 discharged by the filter device 600, so that the filtered impurities 501 will not enter the drainage water flow, but will be discharged from the washing machine with the drainage water flow. The above method prevents the fine lint in the filtered impurities 501 from being discharged with the water flow and entering the ecological cycle, thereby causing harm to the ecological environment and human health.

[0115] In the specific solution of this embodiment, the recovery device 500 includes:

[0116] The housing 510 has a recovery chamber therein;

[0117] The filter assembly 520 is disposed in the recovery chamber, and divides the recovery chamber into a first chamber 531 and a second chamber 532 .

[0118] The sewage outlet 6103 is connected to the first chamber 531 , and sewage carrying the filtered impurities 501 enters the first chamber 531 , and enters the second chamber 532 after being filtered by the filter assembly 520 , and the filtered impurities 501 are collected in the first chamber 531 .

[0119] Specifically, the filter assembly 520 can be a frame horizontally arranged at a certain height in the recovery chamber and a filter screen laid on the frame. After the sewage carrying the filtered impurities 501 enters the first chamber 531, the water can enter the second chamber 532 through the filter assembly 520, and the filtered impurities 501 are blocked by the filter screen and remain on the upper surface of the filter assembly 520.

[0120] In the above scheme, a filter assembly 520 is provided in the recovery device 500 for filtering the received sewage and separating the filtered impurities 501 therein from the water. The inside of the recovery device 500 is divided into a first chamber 531 and a second chamber 532 by the filter assembly 520, and the filtered impurities 501 in the sewage are blocked by the filter assembly 520, so that the filtered impurities 501 are collected on the upper surface of the filter assembly 520 in the first chamber 531, and the clean water obtained after filtration is collected in the second chamber 532. The user can directly collect and process the separated filtered impurities 501, avoiding the situation where the filtered impurities 501 are dispersed in the water and difficult to process.

[0121] In this embodiment, the washing machine further comprises a housing 10, and the water drum 100 and the filter device 600 are both disposed in the housing 10. The housing 510 is insertable / removable on the housing 10, and the user can remove the housing 510 from the housing 10 to clean the inside thereof.

[0122] Specifically, the upper side of the housing 510 has an opening, and when the user pulls the housing 510 out of the box 10, the filtered impurities 501 attached to the upper surface of the filter assembly 520 can be cleaned through the opening on the upper side of the housing 510. The filter assembly 520 is preferably detachably connected to the housing 510, and the user can remove the filter assembly 520 from the inside of the housing 510 and take it out for cleaning, which is more convenient to operate.

[0123] In the preferred solution of this embodiment, a water outlet is provided on the second chamber 532 for discharging the filtered clean water. By providing the water outlet on the second chamber 532, the clean water entering the second chamber 532 can be discharged from the recovery device 500 in time, so as to avoid overflow of the recovery device 500 when the amount of sewage discharged from the filtering device 600 is large. Otherwise, the capacity of the second chamber 532 needs to be increased, that is, the overall volume of the recovery device 500 needs to be increased, resulting in it occupying a large space inside the washing machine, which is not conducive to the miniaturization of the overall volume of the washing machine.

[0124] On the other hand, the water in the second chamber 532 can be automatically discharged from the water outlet. When the user cleans the recovery device 500, he only needs to clean the filtered impurities 501 on the filter assembly 520, without manually pouring out the clean water in the second chamber 532. When the filter assembly 520 is detachably installed in the housing 510, the user does not even need to completely remove the housing 510 from the washing machine body 10, but only needs to take out the filter assembly 520 for cleaning, which is more convenient to operate.

[0125] In a further solution of this embodiment, the drainage pipeline 210 and the circulation pipeline 220 are connected through the switching device 270, and the switching device 270 is also connected to the external drainage pipeline 250, which can control the circulation pipeline 220 and the external drainage pipeline 250 to selectively connect to the drainage pipeline 210.

[0126] Specifically, the switching device 270 includes:

[0127] A water inlet connected to the water outlet of the drainage pipe 210;

[0128] A first water outlet connected to the water inlet end of the circulation pipeline 220;

[0129] A second water outlet connected to the water inlet end of the external discharge pipe 250;

[0130] The switching mechanism controls the first water outlet and the second water outlet to selectively connect to the water inlet.

[0131] The washing machine dissolves the laundry treatment agent through the filter device 600, and when performing the circulation filtering operation and the self-cleaning operation, the switching device 270 conducts the drainage pipeline 210 and the circulation pipeline 220. After the self-cleaning operation is completed, the washing machine performs the sewage discharge operation, and at the same time controls the switching device 270 to conduct the drainage pipeline 210 and the external discharge pipeline 250, and the circulation pump 400 is turned on to discharge the remaining water in the water drum 100 out of the washing machine.

[0132] The switching device 270 simplifies the pipe connection structure inside the washing machine. At the same time, the circulating pump 400 can be used for both circulating filtration and washing machine drainage, so there is no need to set two water pumps with different functions in the washing machine, which saves space and reduces production costs.

[0133] In this embodiment, a circulating filter pipeline and a filter device 600 are provided in the washing machine. The circulating pump 400 can drive the water in the water drum 100 to circulate through the filter device 600 during the washing and rinsing process of the washing machine, thereby reducing the content of lint in the water and improving the washing effect. At the same time, the filter device 600 can also accelerate the dissolution of the clothing treatment agent through the rotation of the filter mechanism 620 after the clothing treatment agent is added, so that the clothing treatment agent added to the water drum 100 can be more evenly and fully dissolved in the water, further improving the washing effect. The filter device 600 is dual-purpose, saving the installation space inside the washing machine.

[0134] Embodiment 2

[0135] like Figure 1 and Figure 2 As shown, this embodiment is a further limitation of the above-mentioned embodiment 1, and cleaning particles 680 are further provided in the filter cavity 610 for accelerating the dissolution of the clothing treatment agent by friction and collision with the movement of the water flow.

[0136] In this embodiment, cleaning particles 680 are arranged in the filter cavity 610. During the process of dissolving the clothing treatment agent, the filter mechanism 620 rotates to stir the water flow. At the same time, the cleaning particles 680 move with the water flow, causing friction and collision between each other, or friction and collision with the inner wall of the filter cavity 610 and the outer wall of the filter mechanism 620. This can further enhance the agitation of the water flow in the filter cavity 610, thereby further accelerating the dissolution rate of the clothing treatment agent.

[0137] On the other hand, during the circulation filtration process, the cleaning particles 680 can also clean the inner wall of the filter cavity 610 and the outer wall of the filter mechanism 620 through friction and collision, preventing the filtered impurities from being deposited during the circulation filtration process, causing the filter device 600 to be blocked and affecting the filtration efficiency.

[0138] In this embodiment, the shape of the cleaning particles 680 includes but is not limited to sphere, ellipsoid, elliptical cylinder, etc. The surface of the cleaning particles 680 can be a smooth surface or a non-smooth surface. The cleaning particles 680 with non-smooth surfaces are preferred because they can increase the friction between the cleaning particles 680 and the inner wall of the filter cavity 610 and the outer wall of the filter mechanism 620, thereby achieving a better effect of removing and filtering impurities.

[0139] The material of the cleaning particles 680 is preferably a wear-resistant elastic material to prevent the cleaning particles 680 from being easily worn during use. The resilience of the cleaning particles 680 is preferably 0% to 50%. The cleaning particles 680 are made of an elastic material that is more likely to deform when subjected to force, which can prevent the filter mechanism 620 from getting stuck with the cleaning particles 680 during rotation, or even causing damage to the filter device 600.

[0140] In a further solution of this embodiment, a baffle 690 is provided in the filter cavity 610, a first space is formed on the left side of the baffle 690, and a second space is formed on the right side of the baffle 690. The water inlet 6101 and the cleaning particles 680 are provided on the left side of the baffle 690, and the filtered water outlet 6102 and the sewage outlet 6103 are provided on the right side of the baffle 690.

[0141] The specific structure of the baffle 690 is as follows: Figure 7 As shown, a plurality of water holes 691 are provided thereon. Figure 1 and Figure 2 As shown, the water hole 691 connects the first space and the second space, but the cleaning particles 680 are restricted in the first space by the baffle 690 and do not enter the second space. This prevents the cleaning particles 680 from being discharged from the filtered water outlet 6102 or the sewage outlet 6103 with the water flow, or from accumulating at the filtered water outlet 6102 or the sewage outlet 6103 to cause blockage.

[0142] Specifically, the outer periphery of the baffle 690 is in close contact with or nearly in close contact with the inner wall of the filter cavity 610 , the width of the water hole 691 is D1 , the width of the cleaning particles 680 is d, and D1<d.

[0143] The water hole 691 in this embodiment is a circular hole, and the width D1 of the water hole 691 is the diameter of the water hole 691. It is understandable that the water hole 691 can also be set to other shapes, such as a square hole, a strip hole, etc. In this case, the minimum size of the water hole 691 in different directions is the width D1.

[0144] Similarly, for spherical cleaning particles 680, the width d of the cleaning particles 680 is the diameter of the cleaning particles 680. For cleaning particles 680 of other shapes, since the sizes of the cleaning particles 680 in different directions are not exactly the same, the smallest size among multiple different sizes is the width d. This ensures that the cleaning particles 680 cannot pass through the water holes 691 on the baffle 690 no matter how they change direction, thereby ensuring that the baffle 690 effectively blocks the cleaning particles 680.

[0145] In a further solution of this embodiment, the density of the cleaning particles 680 is less than that of water. After the water flows into the filter cavity 610, the cleaning particles 680 can float in the water, and then more easily move in the first space of the filter cavity 610 driven by the water flow, thereby causing friction and collision, accelerating the uniform dissolution of the clothing treatment agent, or causing the filtered impurities to fall off. This avoids the situation where the cleaning particles 680 are deposited at the bottom of the filter cavity 610 when the impact force of the water flow is insufficient and cannot play an effective role.

[0146] In a further solution of this embodiment, the outer periphery of the filtered water outlet 6102 extends toward the outside of the filter cavity 610 to form a sealing support portion 611 .

[0147] The filtering mechanism 620 includes:

[0148] The filter part is disposed on the same side of the baffle 690 as the water inlet 6101 and filters the water entering the first space;

[0149] The water outlet joint 621 has a left end connected to the filter portion, a right end passing through the baffle 690 , and is rotatably inserted into the sealing support portion 611 .

[0150] The baffle 690 is provided with a through hole 692 for the water outlet connector 621 to pass through, and the through hole 692 is gap-matched with the outer wall of the water outlet connector 621 .

[0151] In the above scheme, the water outlet joint 621 is rotatably sealed with the sealing support part 611, and the filtered water flows out through the water outlet joint 621. The baffle 690 is provided with a through hole 692 which is in clearance with the outer wall of the water outlet joint 621, and the outer wall of the water outlet joint 621 does not contact the inner wall of the through hole 692, so as to prevent the friction between the baffle 690 and the water outlet joint 621 when the filter mechanism 620 rotates and generate resistance, thereby affecting the smooth rotation of the filter mechanism 620.

[0152] In this embodiment, cleaning particles 680 are arranged inside the filter cavity 610, and can move with the water flow during the rotation of the filter mechanism 620, thereby further strengthening the agitation of the water flow and making the clothing treatment agent dissolve in the water more quickly. At the same time, during the circulation filtering process, the cleaning particles 680 can rub and collide with the water flow to clean the inner wall of the filter cavity 610 and the outer wall of the filter mechanism 620, preventing the deposition of filtered impurities during the filtering process, ensuring the filtering efficiency, and at the same time, it can also make it easier for the filtered impurities to fall off when the filter device 600 performs self-cleaning.

[0153] Embodiment 3

[0154] like Figure 8 and Fig. 9 As shown, this embodiment is a further limitation of the filter device 600 in the above-mentioned embodiment one or two, the outer periphery of the filtered water outlet 6102 extends outside the filter cavity 610 to form a sealing support portion 611, and one end of the filter mechanism 620 has a water outlet joint 621 inserted in the sealing support portion 611, and the water outlet joint 621 is rotatably sealed and connected to the sealing support portion 611.

[0155] The filter device 600 further includes:

[0156] The first bearing 631 is sleeved on the water outlet joint 621;

[0157] The first sealing member 641 is disposed on a side of the first bearing 631 facing the inside of the filter cavity 610 to seal a gap between the water outlet joint 621 and the sealing support portion 611 .

[0158] In detail, the filter mechanism 620 includes a filter support and a filter 625, wherein the filter support includes:

[0159] The filter screen support portion 623 is located inside the filter cavity 610, and the filter screen 625 covers the surface of the filter screen support portion 623;

[0160] The water outlet connector 621 is arranged at the left end of the filter support part 623;

[0161] The rotating support portion 622 is disposed at the right end of the filter support portion 623 and is rotatably connected to the filter cavity 610 .

[0162] In the above scheme, a first bearing 631 is arranged between the water outlet joint 621 and the sealing support part 611 to support the water outlet joint 621, so that the water outlet joint 621 can rotate more smoothly in the sealing support part 611, and the structure is stable, which can ensure the stable rotation of the filter mechanism 620 in the filter cavity 610. A first seal 641 is arranged on the right side of the first bearing 631, so that the washing water in the filter cavity 610 cannot enter the gap between the water outlet joint 621 and the sealing support part 611, thereby preventing the first bearing 631 from contacting with water, avoiding the failure of the first bearing 631, and ensuring the effect of the first bearing 631. At the same time, the first seal 641 also prevents unfiltered washing water from flowing out from the filtered water outlet 6102 through the sealing support part 611, affecting the cleaning efficiency of the filter device 600 for wire scraps.

[0163] In the specific scheme of this embodiment, the first sealing member 641 is sleeved on the water outlet joint 621, the inner wall of the first sealing member 641 is sealedly connected to the outer wall of the water outlet joint 621, and the outer wall of the first sealing member 641 is rotatably sealedly connected to the inner wall of the sealing support part 611.

[0164] In a further solution of this embodiment, the filter device 600 further includes a second seal 642 , which is disposed on a side of the first bearing 631 facing away from the inside of the filter cavity 610 to seal a gap between the water outlet connector 621 and the sealing support portion 611 .

[0165] Specifically, the second sealing member 642 is sleeved on the water outlet joint 621 , the inner wall of the second sealing member 642 is sealedly connected to the outer wall of the water outlet joint 621 , and the outer wall of the second sealing member 642 is rotatably sealedly connected to the inner wall of the sealing support portion 611 .

[0166] In the above solution, a second seal 642 is further provided on the left side of the first bearing 631, and the water flowing out through the water outlet joint 621 can be blocked by the second seal 642 and will not contact the first bearing 631. The first bearing 631 is located between the first seal 641 and the second seal 642, which ensures that the installation environment of the first bearing 631 is free of water to the greatest extent, and avoids the first bearing 631 from rusting when it encounters water, which affects the smoothness of the rotation of the filter mechanism 620.

[0167] In a further solution of this embodiment, the inner wall of the sealing support part 611 has a stepped structure, and a first limiting surface 601, a second limiting surface 602 and a third limiting surface 603 having an annular structure and a gradually decreasing inner diameter are formed in sequence from one end of the sealing support part 611 to the outside of the filter cavity 610.

[0168] The surface of the first seal 641 facing the outside of the filter cavity 610 abuts against the first limiting surface 601, the surface of the first bearing 631 facing the outside of the filter cavity 610 abuts against the second limiting surface 602, and the surface of the second seal 642 facing the outside of the filter cavity 610 abuts against the third limiting surface 603.

[0169] In the above scheme, a plurality of vertical annular limiting surfaces are formed by the inner wall of the sealing support portion 611 with a stepped structure, which respectively abut against the left side surfaces of the first seal 641, the first bearing 631 and the second seal 642, thereby limiting the axial movement of the above three in the water outlet joint 621 and preventing the matching structure between the water outlet joint 621 and the sealing support portion 611 from loosening during the rotation of the filter mechanism 620.

[0170] In the preferred solution of this embodiment, the outer diameter of one end of the water outlet joint 621 close to the outside of the filter cavity 610 is smaller than the outer diameter of the other end, and a fourth limiting surface 604 having an annular structure and perpendicular to the axis of the water outlet joint 621 is formed on the outer wall of the water outlet joint 621. The surface of the first bearing 631 facing the inner side of the filter cavity 610 abuts against the fourth limiting surface 604.

[0171] By setting the outer diameter of the left end of the water outlet joint 621 smaller than that of the right end, a fourth limiting surface 604 facing the left is formed at the sudden change of the outer diameter, which abuts against the right surface of the first bearing 631. In this way, both sides of the first bearing 631 have limiting structures, and the structure is more stable.

[0172] In this embodiment, one end of the sealing support part 611 away from the filter cavity 610, that is, the left end of the sealing support part 611 is connected to the filter cavity flange 650, and the middle of the filter cavity flange 650 has a through hole 653 connected to the water outlet joint 621. The outer periphery of the through hole 653 extends away from the sealing support part 611 to form a connecting part 651.

[0173] Preferably, the surface of the filter chamber flange 650 facing the sealing support portion 611 has a protruding plug-in portion 652 , and the plug-in portion 652 is inserted into the opening at the left end of the sealing support portion 611 .

[0174] In the above solution, the left end of the sealing support part 611 is connected to the filter chamber flange 650, and a connecting part 651 is formed on the filter chamber flange 650. The outer diameter of the connecting part 651 is smaller than the outer diameter of the sealing support part 611, and the inner diameter of the connecting part 651 is preferably equal to the inner diameter of the water outlet joint 621. When the filter device 600 is installed in the washing machine, it is connected to the return water pipeline through the connecting part 651, which is easier to install than the method in which the return water pipeline is directly connected to the left end of the sealing support part 611.

[0175] The right side of the filter chamber flange 650 has a plug-in portion 652 inserted into the left end opening of the sealing support portion 611, which facilitates the positioning of the filter chamber flange 650 and the sealing support portion 611 during assembly. A plurality of fixing portions are respectively provided on the periphery of the filter chamber flange 650 and the sealing support portion 611, and screws are passed through the fixing portions to achieve the fixing of the filter chamber flange 650 and the sealing support portion 611.

[0176] In a further solution of this embodiment, the outer wall of the sealing support portion 611 is provided with a reinforcing rib 613 extending along the radial direction of the sealing support portion 611 , and the reinforcing rib 613 is connected to the surface of the filter cavity 610 where the filtered water outlet 6102 is located.

[0177] Since the sealing support portion 611 extends a certain length from the left end surface of the filter cavity 610 , the reinforcement ribs 613 are provided to support the peripheral side wall thereof from the outside, thereby ensuring the strength of the sealing support portion 611 .

[0178] In a further solution of this embodiment, the rotating support part 622 at the right end of the filter mechanism 620 extends along its rotating axis toward the outside of the filter cavity 610, and the filter cavity 610 is provided with an installation opening 6104 for the rotating support part 622 to pass through. The rotating support part 622 is rotatably sealedly connected to the installation opening 6104.

[0179] The rotating support part 622 is used to connect to the driving mechanism that drives the filter mechanism 620 to rotate. The rotating support part 622 extends from the right end of the filter cavity 610, and a motor mounting part 624 is provided at the right end of the rotating support part 622 for connecting to the driving mechanism, so that the driving mechanism can be disposed outside the filter cavity 610 to avoid contact with water.

[0180] Furthermore, the outer periphery of the installation opening 6104 extends outward from the filter cavity 610 along the axis of the rotation support portion 622 to form a sleeve portion 612, and the rotation support portion 622 is sleeved with a third sealing member 643. The inner wall of the third sealing member 643 is sealedly connected to the outer wall of the rotation support portion 622, and the outer wall of the third sealing member 643 is rotatably sealedly connected to the inner wall of the sleeve portion 612.

[0181] A second bearing 632 is further disposed between the sleeve portion 612 and the rotation support portion 622 . The second bearing 632 is sleeved on the rotation support portion 622 and is located at a side of the third sealing member 643 facing the outside of the filter cavity 610 .

[0182] In the above solution, the third seal 643 is provided to prevent water in the filter cavity 610 from leaking out from the mounting port 6104, and the second bearing 632 is provided to support the rotation support portion 622, thereby ensuring smoother relative rotation between the rotation support portion 622 and the sleeve portion 612. The second bearing 632 is provided on the right side of the third seal 643 and does not contact the water in the filter cavity 610, thereby avoiding failure.

[0183] In a preferred solution of this embodiment, the inner diameter of one end of the sleeve portion 612 close to the outside of the filter cavity 610 is smaller than the inner diameter of the other end, and a fifth limiting surface 605 having an annular structure and perpendicular to the axis of the rotation support portion 622 is formed on the inner wall of the sleeve portion 612. The surface of the third sealing member 643 facing the outside of the filter cavity 610 abuts against the fifth limiting surface 605.

[0184] The outer diameter of one end of the rotation support part 622 close to the outside of the filter cavity 610 is smaller than the outer diameter of the other end, and a sixth limiting surface 606 having an annular structure and perpendicular to the axis of the rotation support part 622 is formed on the outer wall of the rotation support part 622. The surface of the second bearing 632 facing the inner side of the filter cavity 610 abuts against the sixth limiting surface 606.

[0185] In the above scheme, the inner diameter of the right end of the sleeve portion 612 is smaller than that of the left end, and a fifth limit surface 605 facing the left side is formed at the sudden change of the inner diameter thereof, which abuts against the right side surface of the third sealing member 643. The outer diameter of the right end of the rotation support portion 622 is smaller than that of the left end, and a sixth limit surface 606 facing the right side is formed at the sudden change of the outer diameter thereof, which abuts against the left side surface of the second bearing 632. The above structure limits the movement of the third sealing member 643 and the second bearing 632 in the axial direction of the rotation support portion 622, and the structure is stable.

[0186] Furthermore, the cross-sectional area of ​​the middle region of the filter support portion 623 is constant, and the left and right ends thereof have a conical structure, so that the local surface of the filter 625 is inclined, which is conducive to the shedding of attached wire scraps.

[0187] In this embodiment, the first bearing 631 and the second bearing 632 are respectively provided at both ends of the filter mechanism 620 for support, so as to ensure that the filter mechanism 620 rotates smoothly and stably in the filter cavity 610. At the same time, through the arrangement of the first seal 641, the second seal 642 and the third seal 643, the installation environment of the first bearing 631 and the second bearing 632 is guaranteed to be free of water to the greatest extent, so as to prevent the first bearing 631 and the second bearing 632 from contacting with water and avoiding failure of both.

[0188] Embodiment 4

[0189] like Figure 1 and Figure 2 As shown, this embodiment provides a control method for a washing machine. The structure of the washing machine in this embodiment is the same as that of the washing machine in the above-mentioned embodiment 1.

[0190] Specifically, the control method includes:

[0191] The circulation pump 400 is turned on to connect the circulation filtering pipeline, and the washing machine performs circulation filtering and rinsing;

[0192] After rinsing, turn off the circulation pump 400;

[0193] Turn on the driving mechanism 660 to drive the filtering mechanism 620 to rotate in the filtering cavity 610;

[0194] When the first set condition is reached, the circulation pump 400 is turned on, and at the same time, the sewage control valve 241 is opened to connect the sewage pipeline 240;

[0195] When the second set condition is reached, the circulating filtration pipeline is cut off.

[0196] Preferably, after the first set condition is reached, the driving mechanism 660 remains in an on state, driving the filtering mechanism 620 to continuously rotate.

[0197] In this embodiment, the said conducting circulation filtering pipeline comprises: the switching device 270 conducts the water outlet of the filtering device 600 and the circulation pump 400, and opens the return water control valve 231 to conduct the return water pipeline 230. The said cutting off circulation filtering pipeline comprises: the switching device 270 conducts the external discharge pipeline 250 and the water outlet of the circulation pump 400.

[0198] It is understandable that the cutting off of the circulating filtering pipeline may also be achieved by shutting down the circulating pump 400 .

[0199] In this embodiment, the water inlet 6101 of the filter device 600 is higher than the highest water level of the washing machine. The washing machine circulates and filters the rinse water during the rinsing process, and the filter device 600 and the circulating filter pipeline are always filled with rinse water.

[0200] After rinsing is completed and the circulation pump 400 is turned off, since the drainage pipeline 210 transports water from bottom to top, the circulation pipeline 220 and the filter device 600 are arranged higher than the water storage drum 100, and the water in the drainage pipeline 210 and the circulation pipeline 220 flows back downward under the action of gravity, and can flow back to the water level in the drainage pipeline 210 and the water level in the water storage drum 100 at most, and the pipeline above the water surface to the filter device 600 is filled with air. However, the filter device 600 is lower than the circulation pipeline 220, and the water therein will not flow back through the circulation pipeline 220. When the circulation pump 400 is turned off, the return water control valve 231 is also turned off, and at this time, the sewage control valve 241 is in a closed state, and the water inside the filter device 600 remains in the filter cavity 610 and will not be discharged to the outside.

[0201] After the driving mechanism 660 is turned on, it drives the filter mechanism 620 to rotate at a high speed, so that the filter impurities such as wire scraps attached to the surface are peeled off from the surface of the filter mechanism 620 under the action of centrifugal force. At this time, since the return water control valve 231 and the sewage control valve 241 are both in a closed state, the water in the filter cavity 610 does not flow out, and the high-speed rotating filter mechanism 620 can also stir the water flow in the filter cavity 610, and the turbulent water flow formed causes a certain impact force on the surface of the filter mechanism 620, and at the same time drives the cleaning particles 680 to move to rub and collide with the inner wall of the filter cavity 610 and the outer wall of the filter mechanism 620, further enhancing the shedding of wire scraps. The filter impurities such as wire scraps peeled off from the surface of the filter mechanism 620 are melted into the water in the filter cavity 610.

[0202] When the circulation pump 400 is turned on, the sewage control valve 241 is also opened to make the sewage pipe 240 conductive, and the sewage in the filter device 600 can be discharged from the sewage outlet 6103, and the cleaning particles 680 are blocked by the baffle 690 and remain in the filter chamber 610. The opening of the circulation pump 400 presses the air in the drainage pipe 210 and the circulation pipe 220 into the filter device 600, so that the sewage carrying the wire scraps in the filter device 600 is completely discharged from the sewage outlet 6103 under the air pressure, avoiding the presence of sewage residue in the filter device 600, and having a good cleaning effect on the filter device 600. The sewage control valve 241 is opened at the same time as the circulation pump 400 is turned on, ensuring the pressure generated when the air is passed into the filter device 600, thereby ensuring that the sewage in the filter device 600 is fully discharged.

[0203] To prevent the water in the water drum 100 from entering the filter device 600 through the circulation pipeline 220 after the sewage in the filter device 600 is drained, the washing machine is preset with a second setting condition. When the second setting condition is reached, the circulation filter pipeline is cut off and the water in the water drum 100 is stopped from being transported to the filter device 600.

[0204] In a specific solution of this embodiment, the first setting condition may be that the circulation pump 400 is turned off for a first setting time t1, and the second setting condition may be that the circulation pump 400 is turned on for a second setting time t2.

[0205] In the above solution, specific values ​​of the first set time t1 and the second set time t2 can be obtained in advance through a large number of experiments and directly written into the control program of the washing machine.

[0206] Specifically, the value of the first set time t1 is approximately the maximum time required for the water level in the drainage pipe 210 to start to drop and stop, and the value of the second set time t2 is approximately the shortest time required for the water level in the drainage pipe 210 to rise to near the top of the drainage pipe 210 after the circulation pump 400 is turned on. In this way, it can be ensured that a larger amount of air can enter the pipe during the period when the circulation pump 400 is turned off, and at the same time, it is effectively prevented that water enters the filter device 600 after the circulation pump 400 is turned on.

[0207] In another solution of this embodiment, the water level height can also be used as the first setting condition and the second setting condition. Specifically, the first setting condition is: the water level in the pipeline between the circulation pump 400 and the filter device 600 reaches the first setting value H1. The second setting condition is: the water level in the pipeline between the circulation pump 400 and the filter device 600 reaches the second setting value H2. Among them, H1 <H2。

[0208] In the present embodiment, the water level is specifically the water level height in the drainage pipe 210 . A water level detection device may be provided in the drainage pipe 210 of the washing machine to detect the water level in the drainage pipe 210 .

[0209] In the above solution, the first set value H1 is greater than and as close as possible to the maximum water level of the washing machine to ensure that after the circulation pump 400 is turned off, the water level in the drainage pipe 210 can drop to the first set value H1.

[0210] There is generally a certain time difference between when the washing machine receives a signal that the water level in the drainage pipe 210 rises to the second set value H2 and when the switching device 270 conducts the drainage pipe 210 and the external drainage pipe 250. In order to avoid water entering the filter device 600 again after the circulation pump 400 is turned on due to response delay, there needs to be a certain difference ΔH between the value of the second set value H2 and the water level height corresponding to the top of the drainage pipe 210. The specific value of the difference ΔH can be obtained through a large number of experiments conducted in advance, so as to ensure that after the washing machine receives a signal that the water level reaches the second set value H2, there is sufficient response time to control the switching device 270 to complete the switching of the water circuit.

[0211] In a further solution of this embodiment, the washing machine determines that the current operation process is the last rinsing stage in this washing program, then turns off the circulation pump 400 after the rinsing is completed, and turns on the circulation pump 400 after the first set condition is met.

[0212] If the washing machine determines that the current operation process is not the last rinsing stage of this washing program, it will perform the following operations after the rinsing is completed:

[0213] The circulation pump 400 remains in operation;

[0214] When the third setting condition is reached, the circulating filtration pipeline is cut off.

[0215] In the above scheme, for the intermediate rinsing stage, since the washing machine needs to continue to operate, that is, the rinse water will still circulate through the filter device 600 for filtration, it is not necessary to drain the sewage carrying lint in the filter device 600 at this time, and it is only necessary to remove the lint attached to the surface of the filter mechanism 620.

[0216] After rinsing, the return water control valve 231 is closed, the sewage control valve 241 is opened, and the circulation pump 400 remains in operation. The water in the water storage drum 100 continues to be transported to the filter device 600 under the action of the circulation pump 400 to flush the inside of the filter device 600. The sewage after flushing is discharged into the sewage pipe 240 through the sewage outlet 6103.

[0217] In this embodiment, the third setting condition may be that the rinsing ends at a third preset time t3, the value of which is obtained in advance through experiments and written into the control program to ensure that the lint attached to the surface of the filter mechanism 620 can be basically removed.

[0218] Alternatively, the circulation and filtering pipeline can be cut off when the water level in the water drum 100 drops to a preset value ΔH1, that is, the switching device 270 is controlled to connect the drainage pipeline 210 and the external drainage pipeline 250, and the circulation pump 400 continues to run to drain the remaining water in the water drum 100 out of the washing machine.

[0219] In the preferred scheme of this embodiment, after the intermediate rinsing is completed, the driving mechanism 660 is turned on to drive the filter mechanism 620 to rotate at high speed in the filter cavity 610, which can stir the water in the filter cavity 610, so that the attached wire scraps are peeled off from the surface of the filter mechanism 620 under the dual effects of centrifugal force and agitated water flow, and merged into the water in the filter cavity 610, and then discharged from the filter cavity 610 through the sewage outlet 6103, with high cleaning efficiency of the wire scraps.

[0220] In this embodiment, the washing machine only performs the operation of first turning off the circulation pump 400 and then turning on the circulation pump 400 at the end of the last rinse to completely drain the sewage in the filter device 600. At the end of the intermediate rinse, the circulation pump 400 remains in operation, thereby avoiding the circulation pump 400 from being frequently turned on and off during the operation of the washing machine, which would affect its service life.

[0221] In this embodiment, the washing machine also cleans the filter device 600 after washing. The specific control method is as follows:

[0222] The circulation pump 400 is turned on, the switching device 270 conducts the water outlet of the circulation pump 400 and the filtering device 600, the return water control valve 231 is opened, and the washing machine performs circulation filtering and washing;

[0223] After washing is finished, the circulation pump 400 remains in operation, the return water control valve 231 is closed, and the sewage control valve 241 is opened;

[0224] When the fourth setting condition is reached, the switching device 270 connects the water outlet of the circulation pump 400 and the external discharge pipeline 250 .

[0225] The fourth setting condition may be that washing ends at a fourth preset time t4, or that the water level in the water drum 100 drops to a preset value ΔH2.

[0226] After washing is completed, circulating filtering and rinsing are required in the subsequent process of the laundry program. Similar to the intermediate rinsing, it is not necessary to completely discharge the sewage in the filtering device 600. The circulating pump 400 can remain in operation and does not need to be shut down.

[0227] In this embodiment, after washing and intermediate rinsing, the washing machine controls the circulating pump 400 to keep running, and delivers the water in the water drum 100 to the filter device 600 for rinsing, and the sewage after rinsing is discharged from the sewage outlet 6103 of the filter device 600. After the last rinsing, the circulating pump 400 is first turned off, waiting for air to enter the pipeline, and then the circulating pump 400 is turned on again to press the air in the pipeline into the filter device 600, so that the sewage therein is completely discharged, ensuring that no sewage remains in the filter device 600 after the washing machine stops running, which can effectively prevent bacteria from growing. At the same time, the washing machine only performs the operation of turning off the circulating pump 400 first and then turning it on again after the last rinsing, which reduces unnecessary opening and closing operations of the circulating pump 400 and prolongs the service life of the circulating pump 400.

[0228] 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 method for controlling a washing machine, the washing machine comprising: water container; A circulating filtration pipeline, the water inlet and outlet of which are respectively connected to the water storage cylinder, and a circulating pump and a filtration device are arranged on the pipeline; The filtering device comprises A filter chamber having a water inlet and a filtered water outlet; The filter mechanism is rotatably disposed inside the filter cavity to filter the water entering the filter cavity; Characterized in that the control method comprises: Add clothing treatment agent to the water tank; Turn on the circulation pump to circulate the water in the water storage cylinder through the filter device; Controlling the filter mechanism to rotate in the filter cavity at a first set speed to dissolve the clothing treatment agent in the water; The washing machine enters the washing / rinsing stage, the circulation pump remains turned on, and the washing machine performs circulation filtering washing / rinsing; Among them, the filtering mechanism divides the interior of the filter cavity into an outer cavity and an inner cavity; the water in the water cylinder enters the outer cavity through the water inlet, enters the inner cavity through the filtering mechanism to be filtered, and the wire scraps carried in the water adhere to the outer wall of the filtering mechanism.

2. The control method of the washing machine according to claim 1, characterized in that: The filter mechanism is continuously rotated at a first set speed for a preset time period, and the filter mechanism is controlled to stop rotating.

3. The control method of the washing machine according to claim 2, characterized in that: After the filter mechanism stops rotating, the circulation pump remains on and the washing machine performs circulation filtering washing / rinsing.

4. The control method of the washing machine according to claim 3, characterized in that: After washing / rinsing is completed, the filter mechanism is controlled to rotate in the filter cavity at a second set speed to remove filtered impurities on the surface of the filter mechanism; the first set speed is greater than the second set speed.

5. The control method of the washing machine according to claim 4, characterized in that: The first set speed is 100~800rpm.

6. The control method of the washing machine according to claim 4, characterized in that: The washing machine determines the value of the first set speed according to the washing parameters in the currently running washing program.

7. The control method of the washing machine according to claim 6, characterized in that: The laundry parameters include the water temperature in the water drum, and / or whether the heating function of the washing machine is turned on.

8. The control method of the washing machine according to claim 7, characterized in that: The value of the first set speed decreases as the water temperature in the water container increases; And / or, the value of the first set speed decreases when the heating function of the washing machine is turned on.

9. The control method of the washing machine according to claim 2, characterized in that: The washing machine determines the value of the preset time length according to the washing parameters in the currently running washing program.

10. The control method of the washing machine according to claim 9, characterized in that: The laundry parameters include the water level in the water drum, and / or the water temperature in the water drum, and / or whether the heating function of the washing machine is turned on.

11. The control method of the washing machine according to claim 10, characterized in that: The value of the preset time length increases as the water level in the water container increases; And / or, the value of the preset time length is shortened as the water temperature in the water container increases; And / or, the value of the preset time length is shortened when the heating function of the washing machine is turned on.

12. The control method of a washing machine according to any one of claims 1 to 11, characterized in that: Before starting the circulation pump, the method further includes: if the water level in the water storage drum is greater than a preset water level, the circulation pump is started; otherwise, the circulation pump is started after the water level in the water storage drum reaches a preset water level.

13. The control method of a washing machine according to any one of claims 1 to 11, characterized in that: The filtering device further comprises a driving mechanism, which is connected to the filtering mechanism and is used to drive the filtering mechanism to rotate in the filtering cavity; After the circulation pump is turned on, the washing machine determines the value of the first set speed according to the washing parameters in the currently running washing program; The driving mechanism is turned on to drive the filtering mechanism to rotate at a first set speed.

14. A washing machine, characterized in that: A control method for a washing machine according to any one of claims 1 to 13 is adopted.

15. The washing machine according to claim 14, characterized in that: Cleaning particles are arranged in the filter cavity to rub and collide with the water flow to accelerate the dissolution of the clothing treatment agent.

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