Self-cleaning method of surface cleaning device

Abstract

The invention discloses a self-cleaning method of a surface cleaning device, the surface cleaning device comprises a cleaning piece, a scraping piece, a water supply assembly and a dirt suction assembly, and the surface cleaning device is characterized in that the cleaning piece and the scraping piece have a first state in which the cleaning piece and the scraping piece abut against each other and a second state in which the cleaning piece and the scraping piece are separated from each other; the method comprises a soaking stage and a decontamination stage, in the soaking stage, the water supply assembly is controlled to work; and in the decontamination stage, the first state and the second state are switched at least once, and the cleaning piece is switched between the positive rotation and the negative rotation. According to the self-cleaning device, the first state and the second state are switched in the self-cleaning process, and positive and negative rotation switching of the cleaning piece is carried out, so that dirt on the surface of the cleaning roller and the roller brush cavity can be better removed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning equipment, in particular to a self-cleaning method of a surface cleaning device. BACKGROUND

[0002] With the continuous improvement of people's living standards, surface cleaning equipment used in families has been widely used. Vacuum cleaners, floor washing machines, robots and other products are increasingly used to assist in cleaning scenes. In order to further improve the user experience, the existing products are all provided with an automatic cleaning function, which can return to the base or the corresponding position for self-cleaning after completing the cleaning operation. However, the self-cleaning of the existing products is not complete, the effect is limited, and the user needs to participate in the post-processing, so that the self-cleaning becomes a gimmick and cannot realize real self-cleaning.

[0003] In one prior art, the scraper is first driven away from the roller brush by the cleaning driving member to make the scraper and the roller brush be spaced apart, at this time, clean water is provided to the roller brush to make it fully absorb water and promote the stains on the roller brush to dissolve, and then the interference between the scraper and the roller brush is controlled to use the scraper to squeeze out the dirty water on the rotating roller brush. In the above prior art, the scraper and the roller brush are only spaced apart during soaking, and the interference between the roller brush and the scraper is still used to remove dirt during the rotation of the roller brush. Due to the presence of the scraper, part of the dirt is inevitably blocked by the scraper and adheres to the roller brush cavity or the back of the scraper, especially some large-volume or flexible flower soil and other dirt may be clamped between the back of the scraper and the roller brush cavity wall, resulting in incomplete cleaning and odor. SUMMARY

[0004] In order to at least partially solve the shortcomings and deficiencies existing in the prior art, the present application provides a self-cleaning method of a surface cleaning device, the surface cleaning device comprising a cleaning member, a scraping member, a water supply assembly and a dirt suction assembly, characterized in that the cleaning member and the scraping member have a first state of mutual abutment and a second state of mutual separation, the method comprising a soaking stage and a dirt removal stage.

[0005] In the soaking stage, the water supply assembly is controlled to work.

[0006] In the dirt removal stage, the first state and the second state are switched at least once,

[0007] The cleaning member is switched between forward rotation and reverse rotation.

[0008] Further, the dirt removal stage comprises a first dirt removal step and a second dirt removal step.

[0009] In the first dirt removal step, the cleaning member is in the first state, and the cleaning member is alternately rotated forward and backward.

[0010] The cleaning member is in the second state in the second decontamination step, and the cleaning member is alternately rotated in the forward direction and the reverse direction.

[0011] Further, the first decontamination step and the second decontamination step include a water supply step, and the cleaning member is switched from the first state to the second state after the water supply assembly supplies water for a first preset time length.

[0012] Further, the decontamination stage includes a third decontamination step:

[0013] The cleaning member is in the first state, and the cleaning member is rotated in the forward direction for a first preset time length.

[0014] The cleaning member is switched to the second state, and the cleaning member is rotated in the reverse direction for a second preset time length.

[0015] Further, the decontamination stage includes a third decontamination step:

[0016] The cleaning member is in the first state, and the cleaning member is rotated in the reverse direction for a first preset time length.

[0017] The cleaning member is switched to the second state, and the cleaning member is rotated in the forward direction for a second preset time length.

[0018] Further, the cleaning member is in the second state separate from the scraping member in the soaking stage.

[0019] Further, the decontamination stage includes a water supply step.

[0020] Further, the method further includes a decontamination stage, the cleaning member is in the first state, the water supply assembly is operated, and the cleaning member is rotated.

[0021] Further, the decontamination stage includes a water supply step.

[0022] Further, in the decontamination stage, the water supply assembly supplies liquid for a preset time before the suction assembly operates.

[0023] The beneficial effects of this technical solution include: switching between a first state and a second state during the decontamination stage, especially in the second state where a gap exists between the cleaning component and the wiping component. This gap forms a transfer channel for large particles or volumes of dirt during the self-cleaning process, reducing or even preventing surface dirt from accumulating on the back of the wiping component or in other areas of the roller brush cavity. In the first state, the cleaning component and the wiping component are in interference contact, and the scraping action of the cleaning component with the wiping component during rotation can remove or fling out dirt adhering to or stuck between the brush bristles. Furthermore, during the decontamination stage, the cleaning component also switches between forward and reverse rotation. By rotating the cleaning component in both directions, dirt trapped between the bristles can be scraped or flung out from both directions, further improving the cleaning effect. Attached Figure Description

[0024] Figure 1 This is a complete diagram of the surface cleaning device;

[0025] Figure 2 A schematic diagram of the internal structure of a floor brush in one possible implementation of a surface cleaning device;

[0026] Figure 3 This is a schematic diagram of the water distribution plate structure in a surface cleaning device.

[0027] Figure 4 An exploded view of the water distribution plate in a surface cleaning device;

[0028] Figure 5 This is a schematic diagram of the cross-sectional structure of the water distribution plate;

[0029] Figure 6 For the appendix Figure 2 A schematic diagram of a partial cross-sectional structure along the AA direction;

[0030] Figure 7 For the appendix Figure 2 A schematic diagram of another state of the local cross-sectional structure in the AA direction;

[0031] Figure 8 For the appendix Figure 2 A schematic diagram of a partial cross-sectional structure in the BB direction;

[0032] Figure 9 A schematic diagram of the internal structure of the floor brush in a preferred embodiment of the surface cleaning device;

[0033] Figure 10 for Figure 9 A magnified view of a section in part D;

[0034] Figure 11 A partial cross-sectional structural diagram of a preferred embodiment of the surface cleaning device;

[0035] Figure 12 Figure 8 is a partial cross-sectional view of the surface cleaning apparatus docked with the base and the cleaning member in a first state;

[0036] Figure 13 Figure 9 is a partial cross-sectional view of the surface cleaning apparatus docked with the base and the cleaning member in a second state;

[0037] Figure 14 Figure 10 is a flow diagram of a self-cleaning method for the surface cleaning apparatus;

[0038] Figure 15 Figure 11 is a preferred self-cleaning method embodiment for the surface cleaning apparatus of Example One;

[0039] Figure 16 Figure 12 is a self-cleaning method embodiment for the surface cleaning apparatus of Example Two;

[0040] Figure 17 Figure 13 is a preferred self-cleaning method embodiment for the surface cleaning apparatus of Example Three;

[0041] Figure 18 Figure 14 is a preferred self-cleaning method embodiment for the surface cleaning apparatus of Example Four;

[0042] Figure 19 Figure 15 is a preferred self-cleaning method embodiment for the surface cleaning apparatus of Example Five;

[0043] Figure 20 Figure 16 is a preferred self-cleaning method embodiment for the surface cleaning apparatus of Example Six;

[0044] Figure 21 Figure 17 is a preferred self-cleaning method embodiment for the surface cleaning apparatus of Example Seven. DETAILED DESCRIPTION

[0045] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0046] In the description of the present application, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, as the terms "first", "second", "third" appear, they are only for descriptive purposes and cannot be understood as indicating or implying relative importance, nor can they be understood as relative priority or priority order.

[0047] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, as the terms "mounting", "connecting", "connecting" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] It should be noted that the surface cleaning device in the embodiments of the present application can be a dry dust collector, or a dry and wet combined floor washing / cleaning device. Specifically, the surface cleaning device can be a handheld cleaning machine with a handle and manually operated by a user, such as a handheld floor washing machine, a handheld floor cleaning machine, a handheld dust collector, etc.; it can also be a cleaning robot with a driving wheel, which can control the driving wheel to travel according to the program stored therein, and control the cleaning roller to clean the floor. The present application will be further described below with reference to the drawings and specific embodiments taking a handheld surface cleaning device as an example.

[0049] As the surface cleaning device of the present application, such as Figures 1-13As shown, including the body 10 and the brush 20, the body 10 and the brush 20 are hinged, the brush 20 includes a brush housing 210, the brush 20 is provided with a driving assembly, a roller brush cavity, a cleaning element 202, a scraping element 203 and a roller brush cover 204, the driving assembly includes a driving motor 201, the cleaning element 202 and the scraping element 203 are arranged in the roller brush cavity, the driving motor 201 is rotatably connected with the cleaning element 202 to rotate and wipe the dirt on the surface to be cleaned, the cleaning element 202 and the scraping element 203 have a first state of mutual abutment, the cleaning element 202 and the scraping element 203 form a predetermined interference amount, for example, at least in the first state during the cleaning operation of the surface to be cleaned, so that the dirt wiped by the cleaning element can be scraped off by the scraping element. Specifically, the scraping element 203 can be a scraping strip, a comb tooth element or a combination thereof, and can be made of metal, plastic or rubber material, preferably a combination of scraping strip 2032 and comb tooth 2031 to form the wiping element 203. The surface cleaning device further comprises a water supply assembly and a dirt suction assembly, the water supply assembly comprises a clean water tank, a water pump 205 and a water distribution plate 206, the clean water tank, the water pump 205 and the water distribution plate 206 are sequentially connected by pipelines to supply the cleaning liquid in the clean water tank to the cleaning element through the multiple water outlets on the water distribution plate 206, the water outlets correspond to the cleaning roller and are arranged along the axial direction of the cleaning roller, and the comb tooth is located below the water outlet, so that the dirt in the gap between the comb teeth can be flushed during the self-cleaning process; the dirt suction assembly includes a suction port 207, a sewage tank and a dirt suction fan, the suction port 207, the sewage tank and the dirt suction fan are sequentially connected by pipelines, the suction port 207 is communicated with the roller brush cavity to suck away the dirt on the surface to be cleaned, the cleaning element or the dirt scraped off by the scraping element and store it in the sewage tank. The body 10 is also provided with a battery assembly and a control board, the control board is electrically connected with the driving motor, the dirt suction fan and the battery assembly to control the battery assembly to supply power to the driving motor and the dirt suction fan and control the driving motor and the dirt suction fan to start, stop and other actions.

[0050] In the embodiment, the cleaning element 202 and the scraping element 203 also have a second state of mutual separation. In one possible implementation, the cleaning element 202 is fixedly installed on the brush, and the scraping element 203 is movably installed on the brush, and the scraping element 203 can move relative to the cleaning element to control the distance between the scraping element 203 and the cleaning element; in another possible implementation, the cleaning element and the scraping element 203 are movably installed on the brush, and the cleaning element and the scraping element 203 can simultaneously move relative to each other to adjust the distance between the scraping element and the cleaning element; in a preferred implementation, the scraping element 203 is fixedly installed on the brush, and the cleaning element is movably installed on the brush, and the cleaning element can move relative to the scraping element to control the distance between the scraping element and the cleaning element.

[0051] The above two moving modes are described as follows.

[0052] In the above possible implementation, in combination with Figures 2 to 8As shown, the water diversion plate is connected with the wiping member to form an integrated assembly structure, and in the first state switching, the water diversion plate 206 moves together with the wiping member 203. The roller brush shell 210 is provided with a movable slot with an opening facing the direction of the roller brush, and the integrated assembly structure is installed in the movable slot. Specifically, the water diversion plate 206 includes a main shell 2061, a middle plate 2062 and a top cover 2063. The main shell 2061 is provided with a water outlet, and the top surface of the main shell 2061 is provided with an inner recess. The middle plate 2062 and the top cover 2063 are sequentially embedded in the inner recess. The lower surface of the main shell 2061 and the middle plate 2062 form a second flow channel in communication with the water supply port. The upper surface of the middle plate 2062 and the top cover 2063 abut to form a first flow channel in communication with the second flow channel. The first flow channel is located above the second flow channel, and the cleaning liquid is uniformly distributed through the first flow channel and the second flow channel. The top surface of the comb member 2031 is provided with a screw column 20311, which penetrates the scraping strip 2032, the main shell 2061, the middle plate 2062 and the top cover 2063 from top to bottom, and is finally fixed by a fastening screw 2064, so that the water diversion plate 205 is connected with the wiping member 203 to form an integrated assembly structure. The middle plate 2062 is provided with a water inlet 20621, which is in communication with the first flow channel. The water inlet 20621 is supplied with water from the horizontal direction, so that the water inlet direction of the water inlet 20621 is perpendicular to the arrangement direction of the first and second flow channels. The integrated assembly structure further includes a sealing member 2065, which is annularly arranged around the outer periphery of the main shell 2061 and the comb member 2031 and in contact with the peripheral wall of the movable slot. The sealing member corresponding to the main shell 2061 is closer to the roller brush surface than the sealing member corresponding to the comb member 2031, so that the sealing member 2031 is inclined and approximately tangent to the roller brush. The main shell 2061 is further provided with a transmission wall 20611 and a limiting column 20612, which are formed by extending the rear wall surface of the main shell 2061 rearward, i.e. the extension direction of the transmission wall 20641 and the limiting column 20642 is parallel to the extension direction or water inlet direction of the water inlet. The bottom of the movable slot is provided with an opening structure for the transmission wall 20611 to extend out, and the limiting column 20612 and the movable slot are further provided with an elastic member such as a spring. The roller brush shell 210 is further provided with a driver 208, and the output end of the driver 208 is in transmission connection with the transmission wall 20611 through a transmission assembly 209, so as to move the integrated assembly structure in the front-rear direction, thereby realizing the switching control of the cleaning member and the scraping member between the first state and the second state.The transmission assembly 209 comprises a threaded column 2091 and a threaded sleeve 2092, one end of the threaded column 2091 is fixedly connected with the output end of the driver 208, the outer surface of the threaded column 2091 is provided with a transmission thread, the threaded sleeve 2092 comprises a first end provided with an internal thread and a second end provided with a limiting protrusion 20921, the limiting protrusion 20921 of the second end extends into the hole or slot 206111 on the transmission wall 20611 to realize transmission connection.

[0053] In the embodiment, after the integrated assembly structure is moved to the position and contacts the bottom of the movable groove, the wiping member is still at least partially located outside the movable groove and extends into the roller brush cavity, so that the wiping member can scrape and block the large mass of dirt in the roller brush cavity although the wiping member is separated from the roller brush. The driver 208 is preferably an electric motor, and the output end of the driver rotates to transmit power to the threaded column, the threaded sleeve and the limiting column 2062, thereby driving the integrated assembly structure to move. The extending direction of the limiting column is the same as the extending direction of the water inlet joint. The driver is two, and is asymmetrically arranged about the central axis plane of the floor brush and located on both sides of the dirt suction opening.

[0054] In a preferred embodiment, the integrated assembly structure is combined with the floor brush to form a roller brush assembly, and the roller brush assembly is arranged in the roller brush cavity. Figures 9 to 11As shown, the cleaning member 202 includes a side plate 2021 and a roller 2022, which are pivotally connected, and the brush housing 210 includes an upper housing 210a, a lower housing 210b, and a cover 210c, the lower housing 210b is provided with a mounting groove 2101 for placing the driver 208, a first groove 2102, and a second groove 2103, the first groove and the second groove are respectively arranged on two opposite side walls of the brush housing, the first groove 2102 is formed by at least partial recessing of one side wall of the brush housing, the second groove 2103 is formed by at least partial recessing of the other side wall of the brush housing, the cover 210 is mounted on the lower housing 210b, and the bottom wall of the first groove is at least partially recessed to form a sliding groove 2104. The driving assembly 201 further includes a driving motor 208, a bracket 2011, an end cover 2012, and a transmission assembly 209', the driving motor is mounted on the bracket 201, and the bracket 201 and the end cover 2012 are pivotally linked. When the cleaning interval is installed, the user holds the side plate 2021 and inserts it from one side of the first groove 2102 to the other side of the second groove 2103, after installation is completed, the side plate 2021 is embedded in the first groove 2102 and flush with the side wall of the brush housing, and the output end of the driving motor is in transmission connection with the roller 2022. The side plate 2021 and the end cover 2102 are respectively in transmission connection with the output end of the driver 208 through the transmission assembly 209', and the cleaning member is driven to move back and forth by a distance S through the side plate 2021 and the end cover 2102, so as to switch and control the scraper between the first state and the second state. The transmission assembly 209' includes a threaded column 2091', a threaded sleeve 2092', and a sliding block 2093', the outer surface of the threaded column 2091' is provided with a transmission thread, the threaded sleeve 2092' includes a first part with an internal thread and a second part formed on the peripheral wall of the first part, the second part is provided with a platform face 20922' extending along the axial direction of the thread, the platform face 20922' is provided with a limiting screw column 20921' extending radially outward along the internal thread, and the threaded sleeve 2092' is fixedly connected with the sliding block 2093' through the limiting screw column 20921'. Specifically, the bottom of the cover of the first groove 2102 is further provided with a sliding groove 2104, at least a part of the sliding block 2093' is arranged in the sliding groove 2104, the limiting screw column 20921' extends into the sliding groove 2104 from the inside of the brush housing through the first wall 2105 on the brush housing, and then at least partially extends into the groove in the inside of the sliding block 2093' and is fixedly connected with the limiting screw column 20921' from the outside of the sliding block 2093' through a fixing member.The outer side of the sliding block 2093' is provided with a limiting groove surrounding the fixing member, and the inner side wall of the side plate 2021 is provided with a limiting rib 20211 corresponding to the limiting groove. The limiting rib and the limiting groove can be a closed ring or a partially disconnected approximate ring structure. After the roller brush is installed, the limiting rib 20211 extends into the limiting groove on the sliding block 2093' to achieve detachable installation.

[0055] Further, the wall surface on the outer side of the sliding block 2093' within the range of the limiting rib 20211 is lower than the wall surface on the outer side of the sliding block 2093' outside the range of the limiting rib 20211. Preferably, the limiting rib 20211 is partially disconnected, and the space between the partially disconnected position and the wall surface and the side plate 2021 is communicated, so as to avoid the problem that the side plate 2021 cannot be detached due to the negative pressure suction force of the space.

[0056] Further, the peripheral side of the sliding block 2093' is further provided with a first sliding groove 20931, and the side wall of the sliding groove 2104 is further provided with a second sliding groove 21041 corresponding to the first sliding groove 20931. A steel ball is arranged between the first sliding groove 20931 and the second sliding groove 21041, so as to reduce the resistance when the sliding block moves.

[0057] Further, the movable side plate 2021 and the end cover 2012 are exposed to the side wall of the brush housing 210. Preferably, the area of the side plate and / or the end cover 2012 is approximately equal to the area of the side wall of the brush housing, and the ratio of the area of the side plate and / or the end cover 2012 to the area of the side wall of the brush housing is in the range of 0.8 to 1.

[0058] As part of the present application, as shown in Figure 12 Further, a cleaning groove 310 accommodating the cleaning member 202 is formed, and in one form of the cleaning groove, the cleaning groove 310 is formed in the base 30, and the peripheral side of the cleaning groove is provided with a surrounding rib 330. When the user needs to self-clean or charge the battery assembly, the surface cleaning device is placed on the base so that the two are adapted to be docked. In another form of the cleaning groove, the cleaning groove is formed with a groove plate, and the groove plate is movably arranged in the brush. When self-cleaning operation is needed, the groove plate is moved to below the cleaning member to form a cleaning groove for self-cleaning operation of the cleaning member.

[0059] In the prior art, there is also a problem that during the self-cleaning process of the surface cleaning device docking with the base, the dirty liquid is splashed out from the gap between the roller brush cover and the base during the rotation of the cleaning roller, causing pollution. When there is a mass of winding objects, the winding objects will be stuck in the gap, not only causing the cleaning roller to be unable to drive the winding objects to form a "dead zone", but also because the gap is far away from the suction port, the suction force is insufficient to suck it away. Therefore, the base 30 and the roller brush cover 204 are also provided with a blocking part 320, which extends from the front edge of the roller brush cover to the base 30. The cleaning roller 202, the roller brush cover 204, the blocking part, and the base together form a guide channel. The drive 208 drives the roller brush to move forward to the second state close to the blocking part to reduce the cross-sectional area of the guide channel in the rotation direction of the cleaning roller. The moving direction of the dirt in the guide channel is shown by the dashed arrow in Figure 12

[0060] By setting the blocking part to fill the gap between the roller brush cover and the base as much as possible, the splashing of dirty liquid by the rotation of the cleaning roller during the self-cleaning process can be avoided. At the same time, the drive is also arranged to drive the cleaning roller to move forward to be close to the blocking part. Compared with the first state, when the cleaning roller is in the second state, the cross-sectional area of the guide channel in the rotation direction of the cleaning roller is significantly reduced, and the mass of winding objects and other dirt can be driven by the cleaning roller to the suction port and sucked away, thereby eliminating the "dead zone". On the other hand, the significantly reduced cross-sectional area of the guide channel here can accelerate the flow speed of the airflow, thereby further avoiding the winding objects from being trapped in the "dead zone".

[0061] Further, the ratio of the maximum distance between the cleaning roller in the first state and the roller brush cavity to the maximum distance between the cleaning roller in the second position and the inner wall of the blocking part is in the range of 0.7-1.3. Specifically, in the present embodiment, the maximum distance between the cleaning roller in the first state and the roller brush cavity is S1 as shown in Figure 12 , and the maximum distance between the cleaning roller in the second position and the inner wall of the blocking part is S2 as shown in Figure 12 . The ratio of S1 / S2 is in the range of 0.7-1.3.

[0062] ​In the preferred embodiment of the present embodiment, one end 3210 of the blocking part 320 is detachably clamped on the rim 330, and the other end 3220 is matched with the roller brush cover 204. It can be understood that the other end 3220 is in close contact with the roller brush cover, and specifically, there can be a small gap or direct abutment. By detachably arranging the blocking part on the base, the user can conveniently detach it for cleaning. Specifically, one end 3210 of the blocking part 320 includes a first side plate 3211 and a second side plate 3212, and one end of the first side plate and the second side plate converges to form a groove 3230 clamped on the rim 330. By arranging the downward-opening groove 3230 on the blocking part and clamping it on the outer surface of the rim 330 from top to bottom, the installation is more convenient, and the installation direction is consistent with the tangential direction of the forward rotation of the cleaning roller, which can reduce the entry of dirt and dirty liquid into the groove and the rim when the cleaning roller is forward rotated. More specifically, the other end 3220 is provided with an elastic member for abutting against the roller brush cover. By arranging the elastic member on the other end 3220, the user can reduce the hard collision between the surface cleaning device and the blocking part 320 when docking, and the elasticity of the elastic member can facilitate the user to dock and install.

[0063] In a possible embodiment of the present embodiment, the blocking part 320 is formed on the roller brush cover 204. Specifically, the blocking part is detachably arranged on the front side of the roller brush cover or integrally fixed on the front side of the roller brush cover. The other end of the blocking part is also provided with an elastic member for abutting against the base station.

[0064] Further, the inner side of the front part of the roller brush cover is formed with a first arc surface 2041, and the blocking part is formed with a second arc surface 3240 facing the roller brush, and the first arc surface 2041 and the second arc surface 3240 are not smoothly transitioned. Specifically, in the present embodiment, the first arc surface 2041 and the second arc surface 3240 are not smoothly transitioned at the second end 3220 of the blocking part 320. By arranging the first arc surface and the second arc surface to be not smoothly transitioned, the cross-sectional area of the guide channel is changed at this point, which increases the state change of the winding material, especially the bundled winding material, at this point, thereby increasing the probability of being driven to the dirt suction port by the cleaning roller. More specifically, the second arc surface is coaxial with the cleaning roller, and the radius of the second arc surface is greater than the radius of the first arc surface, thereby further increasing the probability of being driven to the dirt suction port by the cleaning roller.

[0065] The cleaning roller is separated from the dirt scraping member in the second state to form a gap between the cleaning roller and the dirt scraping member, which communicates with the guide channel. More specifically, the cleaning roller and the dirt scraping member have a first interference amount between the cleaning member and the scraping member in the self-cleaning state of mutual interference, and the cleaning roller and the dirt scraping member have a first gap amount between the cleaning member and the scraping member in the self-cleaning state of mutual separation, wherein the first gap amount is greater than or equal to the first interference amount. In the case that the cleaning roller moves a certain distance relative to the comb teeth, the width of the first gap can be increased as much as possible, the probability of the dirt being blocked by the wiping member is reduced, especially when there are strips or groups of entanglements, the entanglements are reduced to be affected by the wiping member and hooked on the comb teeth of the wiping member, thereby improving the entanglement removal effect, and the wiping effect of the roller brush cavity during the rotation of the cleaning roller driven by the group of entanglements can also be improved.

[0066] The surface cleaning device is docked with the base 30 after cleaning the surface to be cleaned, so that the roller brush is located in the cleaning tank, and the self-cleaning is started automatically or in response to the user manually triggering the start switch. The technical solutions of the self-cleaning method of the surface cleaning system are described below.

[0067] In this embodiment, the self-cleaning method of the surface cleaning device includes a soaking stage and a dirt removal stage. In the soaking stage, the water supply assembly is controlled to work to provide cleaning liquid to the cleaning tank and / or the roller brush. As described in the background, the cleaning liquid is first provided to the cleaning tank through the water distribution plate, so that the cleaning member can be fully soaked, thereby realizing the dissolution of the dirt on the cleaning member, and it is easier to shake off or scrape off the dissolved dirt during the rotation of the cleaning member. As an optional embodiment of this embodiment, the cleaning member and the scraping member are in the first state during the soaking stage. As a preferred embodiment of this embodiment, the cleaning member and the scraping member are in the second state during the soaking stage. When the water outlet of the water distribution plate supplies liquid, the cleaning liquid flushes the large volume of dirt adhered to the back of the scraping member or the area between the water outlet and the scraping member, so that the dirt is flushed and falls into the cleaning tank through the gap between the cleaning member and the scraping member.

[0068] In the dirt removal stage of this embodiment, as shown in Figure 14 The first state and the second state are switched at least once, and the cleaning member is switched between forward rotation and reverse rotation.

[0069] In this embodiment, a switch between a first state and a second state is performed during the decontamination stage. Specifically, in the second state, a gap exists between the cleaning component and the wiping component, allowing this gap to form a transfer channel for large particles or volumes of dirt during the self-cleaning process. This reduces or even prevents surface dirt from accumulating on the back of the wiping component or in other areas of the roller brush cavity. In the first state, the cleaning component and the wiping component are in interference contact. When the cleaning component rotates, it scrapes or flits out dirt adhering to or stuck between the roller brush bristles. Furthermore, during the decontamination stage, the cleaning component also switches between forward and reverse rotation. By rotating the cleaning component in both directions, dirt trapped between the bristles can be scraped or flung out from both directions, further improving the cleaning effect.

[0070] Understandably, the forward / reverse switching of the cleaning component can be either forward first and then reverse, or reverse first and then forward; the switching between the first and second states can be from the first state to the second state, or from the second state to the first state; the cleaning component can switch between forward and reverse in the first state, or in the second state, or both the first and second states can be switched between forward and reverse. (See attached document) Figures 6 to 8 For example, based on the reference direction in the attached diagram, if counterclockwise rotation of the cleaning component is defined as forward rotation, then clockwise rotation is reverse rotation; conversely, if clockwise rotation is defined as forward rotation, then counterclockwise rotation is reverse rotation. The following embodiments will use counterclockwise rotation as an example of forward rotation. The preset number of cycles is the cycle period, which can be 1, 2, 3, or more. The self-cleaning method embodiment of the surface cleaning system is described below.

[0071] Example 1:

[0072] In this embodiment, the decontamination stage includes a first decontamination step, in which the cleaning component is in a first state and the cleaning component switches between forward and reverse rotation.

[0073] In one embodiment of this invention, the cleaning component is in the second state and rotates forward or backward for a preset time before entering the first decontamination step, thus switching the cleaning component from the first state to the reverse direction. It is understood that when the cleaning component is in the second state, it can continuously rotate forward, continuously rotate backward, or alternate between forward and reverse rotation. In the second state, the fully soaked and water-absorbed cleaning component rotates, and large particles of dirt are more significantly affected by centrifugal force and are more easily thrown off. On the other hand, most of the liquid is thrown out under the action of centrifugal force, impacting the roller brush cavity wall, thereby vigorously washing away the dirt, especially large particles, adhering to the roller brush cavity wall, thus first washing off the large particles of dirt and preventing them from getting stuck in the first state. Then, the system switches from the second state to the first state. At this time, the water content of the cleaning component itself has been significantly reduced, and the cleaning component and wiping element come into contact. The scraped-off cleaning liquid, in reverse rotation, washes away any small particles of dirt that may remain adhering to the back of the wiping element.

[0074] like Figure 15 As shown, in a preferred embodiment of this example, the cleaning component remains in a first state during the first decontamination step. After continuously rotating forward and backward for a preset time, the cleaning component switches to a second state, rotating either forward or backward in the second state. It can be understood that after switching to the second state, the cleaning component can continuously rotate forward, continuously rotate backward, or alternate between forward and backward rotation. The cleaning component, after soaking and absorbing water, first switches between forward and backward rotation in the first state. This not only utilizes the centrifugal force of the rotating cleaning component to brush away the dirt dissolved in the water, but also allows the soaked cleaning component to come into contact with the wiping component, causing the dirt dissolved in the water to detach from the cleaning component along with the liquid scraped off by the wiping component. Then, it switches to the second state and maintains forward or backward rotation, allowing some of the dirt brushed out and flowing down the roller brush cavity wall in the second state to flow smoothly through the gap between the cleaning component and the wiping component. Especially when there is also tangled material inside the roller brush cavity, there may be problems such as hair getting tangled on the outer surface of the cleaning roller and hair getting caught on the comb teeth or metal scraper of the wiping component. This dirt is light and loose, and it is difficult to remove by rotating forward or backward alone. In the first state, the cleaning component rotates in both forward and reverse directions alternately. By using the contact between the cleaning component and the wiping component, it simulates the working principle of "rubbing hemp rope" to rub and gather this kind of dirt into strips of dirt, thereby increasing its removability.

[0075] Further, in the preferred embodiment of the present embodiment, in the first decontamination stage, the steps S100 and S200 are included, in the S100 step, the roller brush switches the direction of rotation for a preset number of times; in the S200 step, the roller brush switches the direction of rotation for a preset number of times, and between the steps S100 and S200, the water supply assembly supplies water for a preset time, and during the water supply of the water supply assembly, the roller brush and the air blower are both stopped. On the one hand, the cleaning liquid is relatively concentrated, and the area where the bristles are expanded is also relatively concentrated, so that the unwinding effect of the winding object is better, and the cleaning liquid is prevented from being dispersed by the rotation of the roller brush or directly sucked away by the air blower.

[0076] In the preferred embodiment of the present embodiment, the suction assembly continues to operate during the rotation of the cleaning member in the decontamination stage. In the entire decontamination stage, the dirt that is separated from the roller brush cavity, the cleaning member, or the back of the wiping member is sucked away through the dirt suction port and stored in the dirt bucket, so that the dirt carried by the cleaning member is prevented from being stuck on the back of the wiping member or adhered to the roller brush cavity to cause secondary pollution.

[0077] In the preferred embodiment of the present embodiment, before the cleaning member is switched to the second state, a water supply step is further included and the cleaning member is kept stopped. The water supply is started when the cleaning member is still in the first state. Since the water supply port is located above the wiping member, the cleaning liquid is blocked by the wiping member and accumulated in the area above the wiping member, and the bristles in this area can absorb water faster and more uniformly. Especially when there is a winding object in the roller brush cavity, the water supply assembly is started to supply water first, so that the strip-shaped dirt that is not removed in the foregoing first decontamination step is further expanded by water absorption. When the cleaning member is in the second state, the distance between the cleaning roller and the wiping member becomes larger to form a gap, and the cleaning roller can drive the strip-shaped winding object to the dirt suction port more quickly when the cleaning roller rotates in the forward direction or the reverse direction.

[0078] A specific embodiment of the foregoing preferred embodiment is that: the cleaning member is controlled to be switched to the first state, the air blower is started and then reversely rotates for 2 seconds, forwardly rotates for 2 seconds, and the cycle is repeated for 6 times; the air blower and the cleaning roller are kept stopped in the first state, the water supply assembly supplies 14 grams of water, and then the cleaning member is switched to the second state.

[0079] In the present embodiment, the self-cleaning method further includes a dirt suction stage: the cleaning member is in the first state, the cleaning member is kept rotating, and the air blower continues to operate. In the decontamination stage, the air blower continues to operate while the cleaning member rotates, and there may be some dirt that cannot be taken away by the air blower. By increasing the dirt suction step, the cleaning member is in the first state in this step, so that the space of the roller brush cavity above the wiping member is not in the action area of the air blower due to the isolation of the wiping member, thereby increasing the suction force of the air blower and ensuring that the remaining dirt is completely sucked away. In order to further improve the cleaning effect, the power of the air blower at this time can be higher than that in the decontamination stage.

[0080] Further, in the dirt suction stage, the cleaning member in the first state rotates alternately in the forward direction and the reverse direction. In order to further improve the cleaning effect, the length of time of forward rotation of the cleaning member is set to be greater than or equal to the length of time of reverse rotation of the cleaning member. The cleaning member rotates alternately in the forward direction and the reverse direction, so that dirt on both sides of the bristles can be sucked away by the fan. When the cleaning member rotates in the forward direction, most of the dirt can be scraped by the wiping member and sucked away by the fan under the joint action of the wiping member, and only a small amount of dirt on the other side of the bristles can be sucked away by the fan in a short reverse rotation. In this case, the length of time of forward rotation of the cleaning member is set to be greater than or equal to the length of time of reverse rotation of the cleaning member, so that the cleaning efficiency of the rotation of the cleaning member can be improved while the cleaning effect is taken into account, and the service life of the bristles can be prolonged.

[0081] As described above, some dirt in the roller brush cavity can still be sucked away by the fan in the dirt removal stage. The dirt is likely to be light in weight and large in adhesion. In order to further process the dirt, the water supply assembly supplies water for a preset length of time before the dirt suction assembly operates in the dirt suction stage, so that the dirt groups remaining in the roller brush cavity can be increased in weight due to water absorption, and the dirt groups can be more easily sucked away by the fan.

[0082] In the embodiment, one specific implementation of the dirt suction stage is that the water supply assembly supplies water for 30 seconds, the fan is started, the roller brush rotates in the forward direction for 20 seconds in the first state, rotates in the reverse direction for 5 seconds, and then rotates in the forward direction for 20 seconds to end.

[0083] Embodiment two:

[0084] In the embodiment, in the dirt removal stage, a second dirt removal step is included, in which the cleaning member is in the second state and rotates alternately in the forward direction and the reverse direction.

[0085] In one implementation of the embodiment, as Figure 16As shown, the cleaning member is in the first state and keeps rotating forward or reversely for a preset time, and then enters the second decontamination step, so that the cleaning member is in the second state and the forward and reverse rotation is switched. When the cleaning member keeps rotating forward for a preset time in the first state, the cleaning member soaked after absorbing water first rotates forward or reversely in the first state, which can use the centrifugal force during the rotation of the cleaning member to brush off and separate the dirt dissolved in the water, and can also use the abutment between the soaked cleaning member and the wiping member to separate the dirt dissolved in the water together with the liquid scraped by the wiping member. Then the cleaning member is in the second state, so that a gap is formed between the cleaning member and the wiping member, on the one hand, so that the dirt or dirty liquid accumulated on the back of the wiping member or adhered to the wall of the roller brush cavity can pass through the gap between the cleaning member and the wiping member in the first state of the cleaning member; on the other hand, the dirt or dirty liquid adhered to the wall of the roller brush cavity can also pass through the gap between the cleaning member and the wiping member when the cleaning member is switched in the second state. Especially when the roller brush cavity contains the winding object, in the second state, the winding object hooked and scraped at the comb teeth or metal scraping strip of the wiping member releases pressure and changes in volume, and through the forward and reverse rotation of the cleaning member, the winding object is driven by the bristles to separate from the comb teeth or metal scraping strip and pass through the gap.

[0086] In another embodiment of the present embodiment, the cleaning member keeps the second state and switches the forward and reverse rotation for a preset time in the second decontamination step, and then keeps the first state and rotates forward or reversely. When the cleaning member keeps the forward and reverse rotation for a preset time in the second state, the cleaning member soaked after absorbing water uses the centrifugal force during the rotation to brush off and separate most of the dirt mixed in the cleaning liquid from the cleaning member, and part of the dirt or dirty liquid separated from the cleaning member can be thrown to the roller brush cavity and flow downward along the roller brush cavity under the gravity and pass through the gap between the cleaning liquid and the wiping member. Then the cleaning member keeps rotating forward or reversely in the first state, so as to further scrape off the dirt hidden in the roots of the bristles on the cleaning member. As a specific implementation in the present embodiment, the cleaning member rotates forward in the first state. When the roller brush cavity contains the winding object, in the second state, the winding object hooked and scraped at the comb teeth or metal scraping strip of the wiping member releases pressure and changes in volume, and through the forward and reverse rotation of the cleaning member, the winding object is driven by the bristles to separate from the comb teeth or metal scraping strip and pass through the gap. Compared with the foregoing embodiment, the cleaning effect on the winding object in the present embodiment is earlier.

[0087] In the foregoing embodiment of the present embodiment, the dirt suction assembly keeps operating during the rotation of the cleaning member in the decontamination stage. So that in the whole decontamination stage, the dirt separated from the roller brush cavity, the cleaning member or the back of the wiping member is sucked away through the dirt suction port and stored in the sewage bucket, avoiding that the dirt carried by the cleaning member is stuck on the back of the wiping member or adhered to the roller brush cavity to cause secondary pollution.

[0088] In the above embodiment, before the second decontamination step, a water supply step is further included and the cleaning member is kept stationary. The water supply is started when the cleaning member is still in the first state. Since the water supply port is located above the wiping member, the cleaning liquid is blocked by the wiping member and accumulated in the area above the wiping member. The bristles in this area can absorb water faster and more uniformly. Especially when there are entanglements in the roller brush cavity, the water supply assembly is started first to supply water. When the cleaning member rotates in the forward direction or in the reverse direction, the dirt accumulated on the back of the wiping member can be flushed to both ends along the axial direction of the cleaning member. When there are entanglements in the roller brush cavity, the entanglements hooked on the comb teeth or the metal scraping strips of the wiping member expand and change in weight due to water absorption, so as to be easily taken away from the comb teeth or the metal scraping strips in the second state.

[0089] Further, in the embodiment, after the decontamination stage, the water absorption stage as described in Embodiment 1 is further included. The working process of the water absorption stage is the same as that of Embodiment 1, which will not be described herein.

[0090] Embodiment 3

[0091] In the embodiment, the decontamination stage includes a first decontamination step and a second decontamination step. In the first decontamination step, the cleaning member is in the first state and rotates in the forward direction or in the reverse direction. In the second decontamination step, the cleaning member is in the second state and rotates in the forward direction or in the reverse direction.

[0092] In an embodiment of the embodiment, the second decontamination step is first performed. In the second decontamination step, the cleaning member is in the second state and rotates in the forward direction or in the reverse direction. Then, the first decontamination step is performed. In the first decontamination step, the cleaning member is in the first state and rotates in the forward direction or in the reverse direction. In the second decontamination step, the cleaning member soaked in the cleaning liquid uses the centrifugal force generated during rotation to brush off most of the dirt mixed in the cleaning liquid from the cleaning member. Some of the dirt or dirty liquid separated from the cleaning member can be thrown into the roller brush cavity and flow downward along the roller brush cavity under the action of gravity and through the gap between the cleaning liquid and the wiping member. In the first decontamination step, the cleaning member is in the first state and rotates in the forward direction or in the reverse direction, so that the dirt trapped at the root of the bristles can be further scraped off by the wiping member, thereby further improving the cleaning effect. When there are entanglements in the roller brush cavity, the entanglements hooked on the comb teeth or the metal scraping strips of the wiping member change in volume due to the release of pressure in the second decontamination stage. During the rotation of the roller brush, the entanglements can be taken away in the forward direction or in the reverse direction. In the second decontamination stage, the entanglements can be basically cleaned up.

[0093] In a preferred embodiment of the embodiment, as Figure 17As shown, the first decontamination step is run first, in which the cleaning member switches between forward and reverse rotation; then the second decontamination step is entered, in which the cleaning member switches between forward and reverse rotation. The first decontamination step is run first, at which time the cleaning member is in the first state and switches between forward and reverse rotation, on the one hand using the centrifugal force of the rotating cleaning member to brush off the contaminants dissolved in the water to separate from the cleaning member. On the other hand, using the abutment of the soaked cleaning member and the wiping member, the contaminants dissolved in the water are separated from the cleaning member along with the liquid scraped off by the wiping member, thereby achieving better cleaning of the cleaning member. Then switch to the second state, in which part of the contaminated liquid that is brushed off and flows down the roller brush cavity wall smoothly flows down the space between the cleaning member and the wiping member, thereby enabling better cleaning of the roller brush cavity and timely and effective transfer of the cleaned contaminants. In addition, especially when there are a large number of entanglements such as hair and pets in the cleaning process, there may be a problem of hair entangling on the outer surface of the cleaning roller and hair being hooked on the comb teeth or metal scraping strips of the wiping member. These dirty masses are light and loose, and it is difficult to remove them by forward or reverse rotation alone. By using forward and reverse rotation alternately and using the contact between the cleaning member and the wiping member, the working principle of "twisting a rope" is simulated to wring and gather such dirty masses into strip-shaped contaminants, thereby increasing their removability.

[0094] In addition, in the above preferred embodiment, in the presence of entanglements, it is still possible that a small amount of entanglements are entangled on the surface of the cleaning roller brush and cannot be wrung into strips. Therefore, in the first decontamination step, the water supply assembly is also controlled to supply liquid before at least one forward and reverse rotation switching cycle of the cleaning member. This enables the cleaning liquid to be more absorbed by the cleaning roller brush. In addition, when there are entanglements in the cleaning process, the strip-shaped contaminants wrung in the above embodiment swell after absorbing water, thereby being more easily scraped off by the wiping member. On the other hand, for the small amount of entanglements still entangled on the surface of the cleaning roller in the foregoing embodiment, the bristles of the cleaning roller swell after absorbing water, the entanglements entangled on the surface of the cleaning roller are loosened by the swelling force, are disentangled by the scraping action of the wiping member, and gradually peel off the surface of the roller brush, and then form strips or are directly sucked away. Preferably, in the present embodiment, the first decontamination stage includes S100 and S200 steps, in the S100 step, the roller brush switches forward and reverse a predetermined number of times; in the S200 step, the roller brush switches forward and reverse a predetermined number of times, between steps S100 and S200, the water supply assembly supplies liquid for a predetermined time, and during the liquid supply of the water supply assembly, the roller brush and the fan are both stopped. On the one hand, the cleaning liquid is relatively concentrated, and the area of the bristles that swells is also relatively concentrated, making the loosening of the entanglements better, and avoiding the dispersion of the cleaning liquid by the rotation of the roller brush or the direct suction of the fan.

[0095] Further, in the second decontamination step, the liquid supply assembly supplies liquid for a preset time, and then the cleaning member is controlled to be in the second state, and then the cleaning member is switched between forward rotation and reverse rotation. First, the liquid supply assembly supplies liquid when the cleaning member is in the first state, and the water outlet is located above the wiping member, so that the cleaning liquid is blocked by the wiping member and accumulated in the area above the wiping member. When the cleaning member is reversed, the bristles first absorb the cleaning liquid and then are scraped by the wiping member, so that the dirt on the bristles is scraped off and flushed to both ends of the wiping member along with the cleaning liquid, thereby avoiding accumulation of dirt on the back of the wiping member. When the cleaning process contains entanglements, the liquid supply assembly first supplies liquid, so that the strip-shaped dirt that cannot be removed in the first decontamination step is further expanded. When the cleaning member is in the second state, the distance between the cleaning roller and the wiping member is increased to form a gap. At this time, the forward rotation and reverse rotation of the cleaning roller can further gather the strip-shaped entanglements to form larger groups or thicker and shorter strips, thereby being more easily removed. Specifically, the cleaning member is switched between forward rotation and reverse rotation, and at the same time, the fan is continuously turned on, so that the entanglements can be transferred to outside the roller brush cavity.

[0096] As a specific mode of the embodiment, in the S100 step: the cleaning member is first reversed for 2 seconds and then rotated forward for 2 seconds as one cycle, and the forward rotation and reverse rotation are repeated for 6 times, and at the same time, the fan is continuously turned on. In the S200 step: the liquid supply assembly supplies liquid for N seconds, and then waits for 10 seconds, and then the cleaning member is first reversed for 2 seconds and then rotated forward for 2 seconds as one cycle, and the forward rotation and reverse rotation are repeated for 6 times, and at the same time, the fan is continuously turned on. Then, the second decontamination step is entered: the liquid supply assembly supplies liquid for N seconds, and then the cleaning member is controlled to be in the second state, and the cleaning member is first reversed for 2 seconds and then rotated forward for 2 seconds as one cycle, and the forward rotation and reverse rotation are repeated for 5 times, and at the same time, the fan is continuously turned on.

[0097] Further, in the embodiment, after the decontamination stage, the dirt suction stage as described in the first embodiment is further included, and the working process of the dirt suction stage is the same as that of the first embodiment, which will not be described herein.

[0098] Embodiment Four

[0099] In the embodiment, the decontamination stage includes a third decontamination step. In the third decontamination step, the cleaning member is rotated forward in the first state, and is reversed in the second state, and / or the cleaning member is rotated forward in the second state, and is reversed in the first state, and the first state or the second state is switched. That is, in the third decontamination step, the cleaning member is unidirectionally rotated in the first state or the second state.

[0100] In the embodiment, possible implementation modes include but are not limited to the following cases:

[0101] Case One: the cleaning member is first rotated forward in the first state for a preset time, and then is reversed in the second state for a preset time, and the forward rotation and reverse rotation are repeated for a preset number of times.

[0102] Case two: first reverse rotation of the cleaning member in the first state for a preset time, then forward rotation of the cleaning member in the second state for a preset time, and the cycle is repeated for a preset number of times;

[0103] Case three: first forward rotation of the cleaning member in the second state for a preset time, then reverse rotation of the cleaning member in the first state for a preset time, and the cycle is repeated for a preset number of times;

[0104] Case four: first reverse rotation of the cleaning member in the second state for a preset time, then forward rotation of the cleaning member in the first state for a preset time, and the cycle is repeated for a preset number of times;

[0105] Case five: first forward rotation of the cleaning member in the second state for a preset time, then reverse rotation of the cleaning member in the first state for a preset time, and the cycle is repeated for a preset number of times; then forward rotation of the cleaning member in the first state for a preset time, then reverse rotation of the cleaning member in the second state for a preset time, and the cycle is repeated for a preset number of times;

[0106] Case six: first forward rotation of the cleaning member in the second state for a preset time, then reverse rotation of the cleaning member in the first state for a preset time, and the cycle is repeated for a preset number of times; then switching to reverse rotation of the cleaning member in the second state for a preset time, then forward rotation of the cleaning member in the first state for a preset time, and the cycle is repeated for a preset number of times;

[0107] Case seven: first forward rotation of the cleaning member in the first state for a preset time, then reverse rotation of the cleaning member in the second state for a preset time, and the cycle is repeated for a preset number of times; then forward rotation of the cleaning member in the second state for a preset time, then reverse rotation of the cleaning member in the first state for a preset time, and the cycle is repeated for a preset number of times;

[0108] Case eight: first forward rotation of the cleaning member in the first state for a preset time, then reverse rotation of the cleaning member in the second state for a preset time, and the cycle is repeated for a preset number of times; then switching to reverse rotation of the cleaning member in the first state for a preset time, then forward rotation of the cleaning member in the second state for a preset time, and the cycle is repeated for a preset number of times.

[0109] The following describes the preferred embodiment of the present application with case seven as an example. As shown in FIG. 4, the cleaning member 2 is rotated in the first state for a preset time, and then rotated in the second state for a preset time, and the cycle is repeated for a preset number of times. Figure 18As shown, in the preferred embodiment, the third decontamination step includes S300 step: after the cleaning member rotates forward for a preset time in the first state, the cleaning member rotates reverse for a preset time in the second state, for a preset number of cycles; and S400 step: after the cleaning member rotates forward for a preset time in the second state, the cleaning member rotates reverse for a preset time in the first state, for a preset number of cycles. While the cleaning member rotates in the S300 and S400 steps, the fan continuously operates. In the first state, the wiping member scrapes most of the dirt particles on the surface of the roller brush, and at this time, the dirt is most likely to be hooked or mixed between the cleaning member and the wiping member. Therefore, the cleaning member is switched to the second state to shake off or fall off the dirt mixed between the cleaning member and the wiping member, so that the dirt can be quickly sucked away. Then, the cleaning member is kept in the second state to rotate forward to shake off the dirt on the other side of the bristles. Finally, the cleaning member is switched back to the first state, and at this time, the dirty liquid on the roller brush has basically been shaken off. During the reverse rotation of the cleaning member, the bristles of the roller brush stand up, and the dirt attached to the water distribution plate and / or the comb teeth is taken away, and the dirt adhered to the back of the wiping member can be wiped clean. As a specific embodiment of the present case: S300 step: the roller brush is switched to the second state and rotates reverse for 10 seconds after rotating forward for 10 seconds in the first state, for 2 cycles; and then S400 step: the roller brush is kept in the second state and rotates forward for 10 seconds, and then is switched to the first state and rotates reverse for 10 seconds, for 2 cycles.

[0110] Further, in the decontamination phase, the decontamination phase also includes the dirt suction phase as described in Embodiment One, and the working process of the dirt suction phase is the same as that of Embodiment One, which will not be described here.

[0111] Embodiment Five:

[0112] In the present embodiment, the decontamination phase includes the first decontamination step in Embodiment One and the third decontamination step in Embodiment Four.

[0113] As an optional embodiment of the present embodiment, in the decontamination phase, the third decontamination step is performed first, and then the first decontamination step is performed.

[0114] As a preferred embodiment of the present embodiment, as shown, Figure 19 in the decontamination phase, the first decontamination step is performed first, and then the third decontamination step is performed. Since the cleaning member is in the first state in the first decontamination step, in the third decontamination step, the cleaning member is first switched to the second state, rotates forward for a preset time, and then is switched to the first state again to rotate reverse for a preset time, or rotates reverse for a preset time and then is switched to the first state again to rotate forward for a preset time, for a preset number of cycles.

[0115] As a case of the preferred embodiment, the cleaning member keeps rotating forward and reverse in the first state, and the fan operates simultaneously for a preset time, for a preset period of cycles, and then enters the third decontamination step.

[0116] As another case of the preferred embodiment, the first decontamination stage includes S100 step and S200 step, in the S100 step, the roller brush switches forward and reverse for a preset number of times; in the S200 step, the roller brush switches forward and reverse for a preset number of times, between steps S100 and S200, the water supply assembly supplies liquid for a preset time, and during the water supply assembly supplies liquid, the roller brush and the fan are both stopped. On the one hand, the cleaning liquid is relatively concentrated, and the area of the bristle expansion is also relatively concentrated, so that the unwinding effect of the winding is better, and the cleaning liquid is avoided from being dispersed by the rotation of the roller brush or directly sucked away by the fan.

[0117] For example, a specific way is: control the cleaning member to switch to the first state, the fan is turned on and reverses for 2 seconds, then forwards for 2 seconds and circulates 6 times; switch to the second state, switch to the first state after forward rotation for 10 seconds, and reverse rotation for 10 seconds and circulate 2 times.

[0118] Further, in the decontamination stage, the decontamination stage further includes the decontamination stage as described in embodiment one, the working process of the decontamination stage is the same as that of embodiment one, and details are not repeated here.

[0119] Embodiment six:

[0120] In this embodiment, the decontamination stage includes the second decontamination step in embodiment two and the third decontamination step in embodiment four.

[0121] As an optional embodiment of the present embodiment, in the decontamination stage, the third decontamination step is run first, and then the second decontamination step is run.

[0122] As a preferred embodiment of the present embodiment, as shown in Figure 20 In the decontamination stage, the second decontamination step is run first, and then the third decontamination step is run. Specifically, since the cleaning member is in the second state in the second decontamination step, it is switched to the first state in the third decontamination step, and then forward rotation is performed for a preset time with the fan running at the same time, and then switched to the second state, reverse rotation is performed for a preset time with the fan running at the same time, and circulates for a preset number of times.

[0123] Further, in the decontamination stage, the decontamination stage further includes the decontamination stage as described in embodiment one, the working process of the decontamination stage is the same as that of embodiment one, and details are not repeated here.

[0124] Embodiment seven:

[0125] In this embodiment, the decontamination stage includes the first decontamination step and the second decontamination step in embodiment three and the third decontamination step in embodiment four.

[0126] As a preferred embodiment of the present embodiment, as shown in Figure 21As shown, the first decontamination step, the second decontamination step, and the third decontamination step are sequentially arranged in the decontamination stage. Specifically, the first decontamination stage includes the S100 step and the S200 step. In the S100 step, the cleaning roller is switched to the first state, the fan is turned on, and the roller brush is switched to the forward rotation and the reverse rotation cyclically for a preset number of times, and then the roller brush and the fan are both stopped. In the S200 step, the water supply assembly supplies water for a preset time, the fan is turned on, and the roller brush is switched to the forward rotation and the reverse rotation cyclically for a preset number of times, and then the second decontamination step is entered. In the second decontamination step, the water supply assembly supplies water for a preset time, and then the second state is switched to, the fan is turned on, and the roller brush is switched to the forward rotation and the reverse rotation cyclically for a preset number of times, and then the third decontamination step is entered. In the third decontamination step, the fan is turned on, and the cleaning roller is switched to the first state. The roller brush is switched to the second state after being forward rotated for a preset time, and then the roller brush is reverse rotated for a preset time. The cleaning roller is forward rotated in the second state for a preset time after being kept in the second state for a preset number of times, and then the roller brush is switched to the first state and is reverse rotated for a preset time. The above process is repeated for a preset number of times.

[0127] Further, in the decontamination stage, the decontamination stage further includes the decontamination stage as described in Embodiment One. The working process of the decontamination stage is the same as that of Embodiment One, which will not be described here.

[0128] A specific self-cleaning method of the preferred embodiment of the present embodiment is as follows:

[0129] The flushing stage: the cleaning member is controlled to be in the second state, the water supply assembly supplies water, and the cleaning member is switched to the first state after the water supply is completed;

[0130] The first decontamination step: the fan is turned on, and the cleaning member is reverse rotated for 2 seconds and forward rotated for 2 seconds cyclically for 6 times after being reverse rotated for 2 seconds. The water supply assembly supplies water for 10 seconds, and then the S200 step is entered. In the S200 step, the fan is turned on, and the cleaning member is reverse rotated for 2 seconds and forward rotated for 2 seconds cyclically for 6 times after being reverse rotated for 2 seconds.

[0131] The second decontamination step: the water supply assembly supplies water for 14 grams, the cleaning member is controlled to be in the second state, the cleaning member is reverse rotated for 2 seconds and forward rotated for 2 seconds as a cycle, and the forward rotation and the reverse rotation are cyclically repeated for 5 times. The cleaning member is rotated, and the fan is continuously turned on at the same time.

[0132] The third decontamination step: the roller brush is switched to the first state, the roller brush is forward rotated for 10 seconds in the first state, and then is switched to the second state and is reverse rotated for 10 seconds. The above process is repeated for 2 times. Then, the roller brush is kept in the second state and is forward rotated for 10 seconds, and then is switched to the first state and is reverse rotated for 10 seconds. The above process is repeated for 2 times.

[0133] The decontamination stage: the water supply assembly supplies water for 30 seconds, the fan is turned on, the roller brush is forward rotated for 20 seconds in the first state, and then is reverse rotated for 5 seconds. Finally, the roller brush is forward rotated for 20 seconds, and then the decontamination stage is ended.

Claims

1. A self-cleaning method for a surface cleaning device, the surface cleaning device comprising a cleaning component, a scraping component, a water supply component, and a suction component, characterized in that, The cleaning component and the scraping component have a first state of mutual contact and a second state of mutual separation, and the method includes a soaking stage and a decontamination stage; During the soaking stage, the water supply components are controlled to operate. During the decontamination stage, the first state and the second state are switched at least once, and the cleaning component is switched between forward and reverse rotation.

2. The self-cleaning method of the surface cleaning device according to claim 1, characterized in that, The decontamination stage includes a first decontamination step and a second decontamination step: In the first cleaning step, the cleaning component is in a first state, and the cleaning component rotates alternately in the forward and reverse directions; In the second cleaning step, the cleaning component is in a second state, and the cleaning component rotates alternately in the forward and reverse directions.

3. The self-cleaning method of the surface cleaning device according to claim 2, characterized in that, A water supply step is included between the first and second decontamination steps. After the water supply component supplies water for a first preset time, the cleaning component switches from the first state to the second state.

4. The self-cleaning method of the surface cleaning device according to claim 1, characterized in that, The decontamination stage includes a third decontamination step: The cleaning component is in a first state, and the cleaning component rotates in the forward direction for a first preset time; The cleaning component switches to the second state and rotates in the opposite direction for a second preset time.

5. The self-cleaning method of the surface cleaning device according to claim 1, characterized in that, The decontamination stage includes a third decontamination step: The cleaning component is in a first state, and the cleaning component rotates in the opposite direction for a first preset time; The cleaning component switches to the second state and rotates forward for a second preset time.

6. The self-cleaning method of the surface cleaning device according to claim 1, characterized in that, During the soaking stage, the cleaning component is in a second state where it is separated from the scraping component.

7. The self-cleaning method of the surface cleaning device according to claim 1, characterized in that, The decontamination stage involves the operation of the suction component.

8. The self-cleaning method of the surface cleaning device according to any one of claims 1-7, characterized in that, The method further includes a suction phase, in which the cleaning component is in a first state, the suction assembly is in operation, and the cleaning component rotates.

9. The self-cleaning method of the surface cleaning device according to claim 8, characterized in that, During the suction phase, the cleaning component rotates alternately in both directions, wherein the duration of the forward rotation is greater than or equal to the duration of the reverse rotation.

10. The self-cleaning method of the surface cleaning device according to claim 8, characterized in that, During the sludge suction stage, the water supply component supplies liquid for a preset time before the sludge suction component operates.

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