Self-cleaning method of cleaning equipment and cleaning equipment

Abstract

The invention provides a self-cleaning method of cleaning equipment and the cleaning equipment. The self-cleaning method of the cleaning equipment comprises the steps that a suction device of the cleaning equipment is controlled to operate for t1 time at first power P1, so that the suction device is in a first state; and the suction device is controlled to continue for t2 in the state that the operation power is smaller than the first power P1, and t2 is smaller than t1, so that the suction device is in the second state. The first power P1 is larger than zero and does not exceed the dirt suction power P0 of the suction device. According to the self-cleaning method provided by the invention, the dirt suction pipeline of the cleaning equipment can be self-cleaned, so that the use experience of a user is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cleaning equipment, and in particular to a self-cleaning method for cleaning equipment and the cleaning equipment. Background Art

[0002] With the development of science and technology and social progress, more and more families have begun to use cleaning equipment such as vacuum cleaners, fabric cleaning machines, carpet cleaning machines, sweepers or floor scrubbers to improve household hygiene cleaning efficiency and cleaning quality.

[0003] Typically, cleaning equipment in related art includes a collection tank for collecting dirt and a suction pipe connected to the tank. During use, dirt is sucked into the collection tank by the negative pressure within the suction pipe. However, this dirt easily remains attached to the suction pipe, breeding bacteria and producing odors, resulting in a poor user experience. Summary of the Invention

[0004] The present disclosure provides a self-cleaning method for cleaning equipment and a cleaning equipment, which can self-clean a sewage suction pipe of the cleaning equipment, thereby improving the user experience.

[0005] Specifically, the present disclosure is achieved through the following technical solutions:

[0006] According to a first aspect of an embodiment of the present disclosure, the present disclosure provides a self-cleaning method for a cleaning device, comprising:

[0007] The suction device of the cleaning equipment is controlled to operate at the first power P1 for a time t1, so that the suction device is in a first state.

[0008] The suction device is controlled to operate at a power lower than the first power P1 for a period of time t2, where t2 is lower than t1, so that the suction device is in a second state.

[0009] The first power P1 is greater than zero and does not exceed the sewage suction power P0 of the suction device.

[0010] The technical solution of this application is further described below:

[0011] In one embodiment, controlling the suction device to operate at a power less than the first power P1 for a period of time t2 includes:

[0012] The suction device is controlled to operate at a power of zero for a time period of t2. Alternatively, the suction device is controlled to operate at a second power P2 for a time period of t2, where the second power P2 is greater than zero and less than the first power P1.

[0013] In one embodiment, when the suction device is in the first state, the self-cleaning method further includes:

[0014] The suction device is controlled to operate at the first power P1 in sequence for time t0 and time t1, and t0 is not less than t1.

[0015] Alternatively, the suction device is controlled to operate at the third power P3 for t0 time, and then controlled to operate at the first power for t1 time, the third power P3 is greater than zero and does not exceed the sewage suction power P0, and the third power P3 is not equal to the first power P1.

[0016] In one embodiment, the first power P1 does not exceed 30% of the sewage suction power P0.

[0017] In one embodiment, the self-cleaning method further includes: when the suction device is in the first state or the second state, controlling the roller brush device of the cleaning equipment to rotate, the rotation of the roller brush device includes forward rotation, reverse rotation or alternating forward and reverse rotation.

[0018] In one embodiment, the self-cleaning method further includes: controlling the suction device to alternately cycle between the first state and the second state until a first preset condition is satisfied. When the first preset condition is satisfied, controlling the suction device to operate at a suction power P0 until a second preset condition is satisfied.

[0019] According to the second aspect of an embodiment of the present disclosure, the present disclosure provides a self-cleaning method for a cleaning device, including: controlling the suction device of the cleaning device to operate in a state not exceeding the sewage suction power P0, so that the suction device has a closed state with an operating power of zero and a working state with an operating power of non-zero.

[0020] The suction device is controlled to be in the working state for a time period of t1, and is controlled to be in the closed state for a time period of t2, where t2 is less than t1. The suction device is controlled to alternate between the working state and the closed state at least once.

[0021] According to a third aspect of an embodiment of the present disclosure, a cleaning device is provided, comprising a control device, a dirt collection tank for collecting dirt, a dirt suction pipe connected to the dirt collection tank, and a suction device acting on the dirt suction pipe. The control device is capable of implementing any of the aforementioned self-cleaning methods. The suction device operates at a suction power capable of drawing cleaning fluid along the dirt suction pipe into the dirt collection tank.

[0022] In one embodiment, the cleaning device further includes a shell device and a roller brush device rotatably connected to the shell device, at least a portion of the sewage suction pipe is detachably arranged on the shell device, and at least a portion of the inlet of the sewage suction pipe is arranged toward the roller brush device.

[0023] In one embodiment, the cleaning device further includes a main unit connected to the housing device, wherein the dirt collection tank is located in the main unit. The dirt suction pipe includes at least two interconnected pipes, the at least two pipes including a first pipe located in the housing device and a second pipe located in the dirt collection tank, wherein the first pipe is connected to the second pipe.

[0024] The technical solutions provided by the embodiments of the present application include at least the following beneficial effects:

[0025] The cleaning device provided in the present application has a self-cleaning mode. In the self-cleaning mode of the cleaning device, the suction device can operate at different powers, so that the suction device has at least two states. Among them, the suction device can operate at a first power P1 greater than zero and less than the sewage suction power for t1 time in the first state, and the suction device can operate at a state less than the first power P1 for t2 time in the second state, so that the negative pressure suction force generated by the suction device on the sewage suction pipe in the first state can be greater than the negative pressure suction force generated in the second state. In this way, the suction device can generate negative pressure suction forces of different sizes in the sewage suction pipe, so that the cleaning liquid can form a surge in the sewage suction pipe, and the sewage suction pipe is flushed back and forth by the fluctuation of the surge, so as to achieve self-cleaning of the sewage suction pipe and prevent the sewage suction pipe from breeding bacteria, generating odor or being blocked due to residual dirt.

[0026] In addition, the duration t2 of the suction device in the second state can be shorter than the duration t1 in the first state, that is, the present application can also weaken the user's perception of changes in the operating state of the suction device by shortening the duration of changes in the negative pressure suction of the suction device, thereby avoiding unnecessary concerns from users due to mistakenly believing that the cleaning equipment is operating unstably, inefficiently or damaged.

[0027] In this way, the self-cleaning method of the cleaning equipment provided in the present application can not only self-clean the sewage suction pipe, but also weaken the user's perception of the state change of the suction device during the self-cleaning process, thereby improving the user's experience.

[0028] In addition, the cleaning equipment provided in this application is not limited to cleaning equipment such as floor scrubbers, fabric cleaning machines or carpet cleaning machines, and this application does not impose any restrictions. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which constitute a part of the present disclosure, are used to provide a further understanding of the present disclosure. The exemplary embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation to the present disclosure.

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 This is a schematic diagram of the structure of the cleaning equipment provided in this application.

[0032] Figure 2 for Figure 1 Schematic diagram of the internal structure of the cleaning equipment after docking with the base station.

[0033] Figure 3 This is the control principle diagram of the cleaning equipment provided in this application.

[0034] Figure 4 This is a schematic diagram of the self-cleaning method of the cleaning equipment provided in this application.

[0035] Reference numerals:

[0036] 1-cleaning equipment; 11-housing device; 12-rolling brush device; 13-host device; 14-dirt collecting box; 15-sewage suction pipe; 151-first pipe; 152-second pipe; 16-suction device; 17-control device; 18-cleaning liquid output device; 2-maintenance equipment; 21-cleaning tank. DETAILED DESCRIPTION

[0037] Here, the technical solutions in the embodiments (or "implementations") of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0038] If there are terms related to directional indications or positional relationships in the embodiments of the present disclosure (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, height, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships, movement, etc. between the components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first" and "second" in the embodiments of the present disclosure are only used for the purpose of convenience of description and should not be understood as indicating or implying relative importance.

[0039] With the development of science and technology, people's living standards have gradually improved. More and more families have begun to use cleaning equipment such as fabric cleaning machines, carpet cleaning machines, sweeping robots or floor scrubbers. These cleaning equipment frees people from the complicated cleaning work, helping them to clean their living environment and allowing them to enjoy more free time, thus becoming very popular.

[0040] Typically, cleaning equipment has a dirt collection box for collecting dirt, a sewage suction pipe connected to the dirt collection box, and a suction device that can generate negative pressure suction. When the suction device is activated, the negative pressure suction generated by the suction device can suck the dirt along the sewage suction pipe into the dirt collection box. Understandably, there are often various degrees of dirt on the ground. These dirts include light dirt that is easy to clean, such as dust, hair or sweat stains, as well as stubborn dirt that is more difficult to clean, such as oil stains, scale or mold. In the process of the cleaning equipment sucking these dirts into the dirt collection box, these dirts are likely to remain and adhere to the inner wall of the sewage suction pipe. Long-term accumulation will cause bacteria to grow in the sewage suction pipe and produce odors, and even cause the sewage suction pipe to be blocked, affecting the normal use of the cleaning equipment and resulting in a poor user experience.

[0041] Based on this, the present application provides a self-cleaning method for cleaning equipment, which can self-clean the sewage suction pipe of the cleaning equipment, thereby improving the problems of bacteria breeding, odor generation and pipe blockage in the sewage suction pipe, thereby reducing the maintenance frequency of the cleaning equipment and extending its service life, thereby improving the user experience.

[0042] To facilitate understanding of the control method of the cleaning equipment provided in the present application, the cleaning equipment provided in the present application will be described below with reference to the accompanying drawings.

[0043] See also Figures 1 to 3 , Figure 1 This is a schematic structural diagram of the cleaning device 1 provided in this application. Figure 2 for Figure 1 The schematic diagram of the internal structure of the cleaning device 1 shown in the dotted box is after being docked with the base station. Figure 3This is a control schematic diagram of the cleaning device 1 provided in the present application. Specifically, the cleaning device 1 provided in the present application includes a control device 17, a dirt collecting box 14 for collecting dirt, a dirt suction pipe 15 connected to the dirt collecting box 14, and a suction device 16 acting on the dirt suction pipe 15. The control device 17 can control the cleaning device 1 to perform multiple working modes according to control instructions. The multiple working modes include a cleaning mode in which the cleaning device 1 is used to clean dirt from the surface to be cleaned, and a self-cleaning mode in which the cleaning device 1 itself is maintained and cleaned. For example, when the cleaning device 1 is in cleaning mode, the control device 17 can control the suction device 16 to operate at a dirt suction power according to the cleaning mode. The negative pressure suction force generated by the suction device 16 can suck the dirt on the surface to be cleaned along the dirt suction pipe 15 to the dirt collecting box 14. The surface to be cleaned includes the ground, kitchen countertops, blankets or fabrics, etc., which are not limited by the present application.

[0044] It can be understood that the suction device 16 includes a device such as a pump or a fan that can generate negative pressure suction, which is not limited in this application.

[0045] The dirt collecting box 14 can be flexibly assembled and disassembled on the housing of the cleaning device 1 to facilitate the user to dump the dirt in the dirt collecting box 14 .

[0046] The sewage suction pipe 15 includes a hard connecting pipe and a soft connecting pipe, etc., which is not limited in this application.

[0047] The control device 17 includes a control device such as an MCU (micro control unit), a PLC (programmable logic controller), a CPU (central processing unit) or a single chip microcomputer, and this application does not impose any restrictions.

[0048] See also Figure 1 and Figure 2 In some embodiments, in order to improve the cleaning effect of the cleaning device 1, the cleaning device 1 also includes a shell device 11 and a roller brush device 12 rotatably connected to the shell device 11, at least part of the sewage suction pipe 15 is detachably arranged on the shell device 11, and at least part of the inlet of the sewage suction pipe 15 is arranged toward the roller brush device 12.

[0049] It should be noted that when the cleaning device 1 is in the cleaning mode, the control device 17 can also control the roller brush device 12 to rotate relative to the housing device 11, so that the roller brush device 12 can rub against the surface to be cleaned to wipe away the stains, and the dirt on the surface to be cleaned can also be rolled up by the rotation of the roller brush device 12 and enter the dirt collection box 14 along the sewage suction pipe 15. In this way, through the dual action of the roller brush device 12 and the negative pressure suction force in the sewage suction pipe 15, the cleaning ability of the cleaning device 1 to remove dirt on the surface to be cleaned can be improved.

[0050] As will be understood, the roller brush device 12 includes a motor, a transmission mechanism connected to the motor, and a roller brush connected to the transmission mechanism. The transmission mechanism is capable of transmitting the torque output by the motor to the roller brush to drive the roller brush to rotate. The transmission mechanism may include a gear mechanism and a connecting rod mechanism, etc., and this application does not limit this.

[0051] Understandably, if Figure 2 As shown, the roller brush device 12 and the inlet of the sewage suction pipe 15 are usually spaced apart along the front-to-back direction shown in the figure. For example, the roller brush device 12 can be arranged at the front part of the housing device 11, and the sewage suction pipe 15 can be arranged at the rear part of the housing device.

[0052] See also Figure 1 and Figure 2 In some embodiments, the cleaning device 1 further includes a main unit 13 connected to the housing 11, and a dirt collection tank 14 is located in the main unit 13. The dirt suction pipe 15 includes at least two interconnected pipes. For example, the at least two pipes include a first pipe 151 and a second pipe 152. The first pipe 151 may be located in the housing 11, and the second pipe 152 may be located in the dirt collection tank 14 and connected to the first pipe 151.

[0053] It should be noted that the main unit 13 can be connected to the shell device 11 in the up-down direction in the figure, and the main unit 13 can be rotated relative to the shell device 11 to facilitate the user to hold the main unit 13 to move the cleaning device 1, thereby using the roller brush device 12 to clean dirt in different positions. It can be understood that the dirt collecting box 14 is located on the main unit 13, which is convenient for the user to disassemble and assemble, and the user does not need to repeatedly bend over to work. The first pipe 151 and the second pipe 152 can extend in the up-down direction in the figure. The first pipe 151 is located in the shell device 11 so as to be close to the surface to be cleaned, thereby facilitating the collection of dirt by negative pressure suction. The second pipe 152 is located in the dirt collecting box 14 and is connected to the first pipe 151, and can transport the dirt in the first pipe 151 to the dirt collecting box 14 through the second pipe 152.

[0054] It is understandable that by locating the second pipe 152 in the dirt collection box 14, when the user removes the dirt collection box 14 and cleans it, the user can also clean the second pipe 152 of the dirt suction pipe 15. This arrangement allows the dirt suction pipe 15 to be configured as at least two detachable pipe sections, and the section of the dirt suction pipe 15 located in the dirt collection box 14 can also be cleaned separately when the dirt collection box 14 is removed. This can increase the frequency of maintenance of the dirt suction pipe 15 by the user and reduce the difficulty of cleaning the dirt suction pipe 15 when the cleaning device 1 is in the self-cleaning mode of the dirt suction pipe 15.

[0055] In addition, in other embodiments, the second pipe 152 of the sewage suction pipe 15 may also be located in the host device 13. Alternatively, the sewage suction pipe 15 further includes a third pipe located between the first pipe 151 and the second pipe 152, and the third pipe may also be located in the host device 13, which is not limited in this application.

[0056] In some embodiments, the host device 13 may be provided with an operation button electrically connected to the control device 17, and the user may input control instructions for executing various operating modes such as the cleaning mode or the self-cleaning mode through the operation button. Of course, the various operating modes of the cleaning device 1 may also be controlled by the user through a device such as a mobile phone or a computer, and this application does not limit this.

[0057] See also Figure 3 In some embodiments, to improve the cleaning effect of the cleaning device 1, the cleaning device 1 further includes a cleaning liquid output device 18. The cleaning liquid output device 18 is capable of outputting at least one liquid medium, such as clean water, cleaning liquid, and disinfectant. These cleaning liquids can be directly output to the surface to be cleaned through a nozzle or other pipeline to directly dissolve dirt on the surface to be cleaned, thereby facilitating wiping by the roller brush device 12. These cleaning liquids can also be directly output to the bristle surface of the roller brush device 12 to self-clean the roller brush device 12, or to improve the cleaning effect of dirt by soaking the bristles of the roller brush device 12.

[0058] As will be understood, the cleaning fluid delivery device 18 comprises a pump assembly, an delivery assembly, and a connection assembly connected between the pump assembly and the delivery assembly. The pump assembly is used to pump the cleaning fluid. The delivery assembly includes at least one nozzle for spraying the cleaning fluid. The connection assembly includes a valve and connecting pipes for controlling the flow of the cleaning fluid.

[0059] In other embodiments, the cleaning liquid output device 18 may further include a foam generator, so that the cleaning liquid can generate abundant foam in the foam generator and then be sprayed out by the nozzle, so as to utilize the foam to improve the cleaning effect.

[0060] See also Figure 2 In some embodiments, to facilitate self-cleaning of the cleaning device 1, the cleaning device 1 can be docked with the maintenance device 2 to execute a self-cleaning mode. The maintenance device 2 has a cleaning tank 21, which can accommodate the cleaning liquid required for self-cleaning the cleaning device 1. The cleaning liquid in the cleaning tank 21 can be the liquid injected into the cleaning tank 21 by the cleaning liquid output device 18 of the cleaning device 1, or the liquid injected into the cleaning tank 21 by the maintenance device 2, or the cleaning liquid added to the cleaning tank 21 by the user, and this application does not impose any restrictions.

[0061] In the self-cleaning mode of the cleaning device 1, the cleaning device 1 can be docked with the maintenance device 2, and the suction device 16 can be controlled to start, so that the cleaning liquid in the cleaning tank 21 can be sucked by the negative pressure along the sewage suction pipe 15 into the sewage collecting box 14, thereby self-cleaning the sewage suction pipe 15.

[0062] For the cleaning device 1 with the roller brush device 12, the cleaning device 1 is docked with the maintenance device 2, and the roller brush device 12 is placed in the cleaning tank 21, so that the bristles are soaked in the cleaning liquid in the cleaning tank 21 to perform self-cleaning on the roller brush device 12. It can be understood that the roller brush device 12 can rotate in the self-cleaning mode, so that the bristles can rub against the cleaning liquid, thereby improving the cleaning effect of the self-cleaning.

[0063] It is understood that the maintenance device 2 may include a base station compatible with the cleaning device 1, and the base station can be used in conjunction with the host device 13. That is, the base station can communicate with the host device 13 and operate according to the operating instructions of the host device 13. For example, when the cleaning device 1 is docked with the base station, the base station can perform self-cleaning operations on the cleaning device 1, dry the bristles of the roller brush of the cleaning device 1, spray clean the dirt collection box 14, and charge the cleaning device 1.

[0064] It is understandable that the maintenance equipment 2 may also include containers such as a sink, a bucket or a pool, and this application does not impose any limitation thereto.

[0065] It is understandable that in order to facilitate the provision of cleaning liquid, the cleaning device 1 can also have a solution tank for storing cleaning liquid. The user can fill the solution tank with cleaning liquid, or the solution tank can automatically load and unload water to fill the cleaning liquid. This application does not impose any restrictions.

[0066] This application does not elaborate on other structures of the cleaning device 1.

[0067] In addition to the above-mentioned cleaning device 1, the present application also provides a self-cleaning method for the cleaning device 1. The self-cleaning method for the cleaning device 1 provided in the present application will be described below.

[0068] See also Figure 4 , the self-cleaning method provided in this application includes:

[0069] The suction device 16 of the cleaning apparatus 1 is controlled to operate at the first power P1 for a time t1 , so that the suction device 16 is in a first state.

[0070] The suction device 16 is controlled to operate at a power lower than the first power P1 for a period of time t2 , where t2 is lower than t1 , so that the suction device 16 is in the second state.

[0071] The first power P1 is greater than zero and does not exceed the sewage suction power P0 of the suction device 16 .

[0072] It should be noted that the cleaning device 1 can execute the cleaning mode and the self-cleaning mode according to the user's control instructions. In the cleaning mode of the cleaning device 1, the suction device 16 of the cleaning device 1 can operate with the sewage suction power, so that the negative pressure suction force generated by the suction device 16 can suck the dirt on the surface to be cleaned along the sewage suction pipe 15 to the sewage collection box 14, so as to clean the dirt on the surface to be cleaned. In the self-cleaning mode of the cleaning device 1, the suction device 16 can operate in a state where the operating power is less than the sewage suction power, so that the negative pressure suction force generated by the suction device 16 can suck the cleaning liquid into the sewage suction pipe 15 instead of directly entering the sewage collection box 14, so as to use the cleaning liquid to flush the inner wall of the sewage suction pipe 15, thereby realizing self-cleaning of the sewage suction pipe 15.

[0073] In order to improve the self-cleaning effect of the sewage suction pipe 15, in the self-cleaning mode of the cleaning device 1, the suction device 16 can operate at different powers, so that the suction device 16 has at least two states.

[0074] As an example, when the suction device 16 is in the first state, the suction device 16 can operate at the first power P1 for t1 time. When the suction device 16 is in the second state, the suction device 16 can operate at a state less than the first power P1 for t2 time. It can be understood that the negative pressure suction force of the suction device 16 in the first state can be greater than the negative pressure suction force of the suction device 16 in the second state. With this arrangement, the suction device 16 can generate different negative pressure suction forces in the sewage suction pipe 15, so that the cleaning liquid can flush the sewage suction pipe 15 under the action of different negative pressure suction forces. Moreover, according to the different negative pressure suction forces generated by the suction device 16, the cleaning liquid can generate different degrees of fluctuations in the sewage suction pipe 15 to form a rolling surge, and then use the inertial impact of the surge to increase the cleaning impact force on the sewage suction pipe 15 and can flush the sewage suction pipe 15 back and forth, thereby improving the self-cleaning force of the sewage suction pipe 15.

[0075] Furthermore, in the self-cleaning mode of the cleaning device 1, the duration of the suction device 16 in the second state is shorter than the duration of the suction device 16 in the first state. This shortens the duration of changes in the negative pressure suction force generated by the suction device 16, thereby reducing the user's perception of changes in the operating state of the suction device 16. For example, the suction device 16 in different states not only generates different negative pressure suction forces due to different operating power, but also causes changes in the operating noise of the suction device 16. Shortening the duration of the suction device 16 in the second state significantly reduces noise fluctuations, thereby reducing the user's perception of changes in the operating state of the suction device 16, thereby preventing the user from worrying about unstable operation, inefficiency, or damage to the cleaning device 1.

[0076] Thus, the self-cleaning method of the cleaning device 1 provided in this application can, on the one hand, self-clean the sewage suction pipe 15, thereby removing dirt attached to the sewage suction pipe 15 through surge flushing, thereby improving the problems of bacterial growth, odor generation, and blockage in the sewage suction pipe 15, thereby extending the service life of the cleaning device 1. On the other hand, it can also reduce the user's perception of changes in the state of the suction device 16 during the self-cleaning process, thereby improving the user's experience.

[0077] In some embodiments, the first power P1 of the suction device 16 is greater than zero and does not exceed 30% of the sewage suction power P0. In this way, the suction device 16 can generate negative pressure suction in the sewage suction pipe 15 while avoiding excessive operating noise.

[0078] It is understandable that the first power P1 may be 10% of the suction power P0, or 70% of the suction power P0, or 30% of the suction power P0. In other words, the first power P1 may be any power greater than zero but not exceeding 30% of the suction power P0, and this application does not impose any limitation thereto.

[0079] As an example, the suction power P0 of the suction device 16 can be set to 120W, and the first power P1 can be set to 36W, 30W, 25W, 20W, 15W, 10W, 5W, etc., which are not limited in this application. The t1 time can be set to 3 seconds, and the t2 time can be set to greater than 0 seconds and less than 3 seconds, which are not limited in this application.

[0080] In some embodiments, when the suction device 16 is in the second state, controlling the suction device 16 to operate at a power less than the first power P1 for a time t2 includes controlling the suction device 16 to operate at zero power for a time t2.

[0081] It should be noted that, in order to facilitate the control of the operating power of the suction device 16 in the second state, the operating power of the suction device 16 can be set to zero. At this time, the suction device 16 is in the closed state, that is, the suction device 16 can be closed for t2 time.

[0082] In this way, when the suction device 16 is in the first state, the cleaning liquid can be sucked into the sewage suction pipe 15 by the negative pressure suction force generated by the suction device 16, so as to flow along the direction from the first pipe 151 to the second pipe 152 (such as Figure 2 When the suction device 16 is in the second state, the negative pressure suction force generated by the suction device 16 disappears, and the cleaning liquid can fall back in the suction pipe 15 by its own gravity, and flow along the direction from the second pipe 152 to the first pipe 151 (as shown in FIG. Figure 2At the same time, as the cleaning liquid in the sewage suction pipe 15 falls back, the cleaning liquid in the cleaning tank 21 of the maintenance equipment 2 can be hit by the falling cleaning liquid to generate fluctuations, and the fluctuating cleaning liquid can repeatedly impact the sewage suction pipe 15 due to inertia.

[0083] Of course, in other embodiments, the suction device 16 can also be in a non-closed state in the second state. For example, when the suction device 16 is in the second state, controlling the suction device 16 to operate at a power less than the first power P1 for a period of time t2 also includes: controlling the suction device 16 to operate at a second power P2 for a period of time t2, wherein the second power P2 is greater than zero and less than the first power P1. It is understandable that the second power P2 is less than the first power P1, and the negative pressure suction force generated by the suction device 16 in the second power P2 state is less than the negative pressure suction force generated in the first power P1 state, and the cleaning liquid can also fluctuate back and forth in the sewage suction pipe 15 to flush the sewage suction pipe 15 back and forth. In addition, with this configuration, the negative pressure suction force of the suction device 16 can be gradually reduced, so that the suction device 16 can smoothly transition from the first state to the second state, thereby reducing the user's perception of changes in the operating state of the suction device 16. It is understandable that the second power P2 can be set to be greater than zero and not more than 80% of the first power P1, and this application does not impose any restrictions on this.

[0084] In some embodiments, to facilitate the entry of the cleaning liquid into the sewage suction pipe 15, when the suction device 16 is in the first state, the self-cleaning method further includes: controlling the suction device 16 to run sequentially at the first power P1 for t0 time and t1 time, and t0 is not less than t1.

[0085] It should be noted that some gas will inevitably remain in the sewage suction pipe 15. When the cleaning liquid enters the sewage suction pipe 15, the gas originally in the sewage suction pipe 15 will be compressed, thereby occupying a portion of the space in the sewage suction pipe 15, resulting in a reduction in the area of ​​the sewage suction pipe 15 flushed by the cleaning liquid. However, by pre-operating the suction device 16 at the first power P1 for a time t0, the suction device 16 can be used to suck out at least part of the gas originally in the sewage suction pipe 15. This not only facilitates the formation of a negative pressure environment in the sewage suction pipe 15, but also prevents the original gas in the sewage suction pipe 15 from being compressed and forming air blockage, which would occupy a large amount of space in the sewage suction pipe 15. In this way, this configuration facilitates the entry of the cleaning liquid into the sewage suction pipe 15 and enables the cleaning liquid to flush a larger area of ​​the sewage suction pipe 15, thereby improving the self-cleaning effect.

[0086] like Figure 2As shown, there is a bend between the first pipe 151 and the second pipe 152 of the sewage suction pipe 15 to accommodate the rotation of the main unit 13 of the cleaning device 1 relative to the shell unit 11. It can be understood that the bend between the first pipe 151 and the second pipe 152 is very easy for dirt to remain attached. In this case, setting the time t0 to be not less than the time t1 can utilize the negative pressure suction force generated by the suction device 16 to accumulate at least a portion of the cleaning liquid in the sewage suction pipe 15 at the time t0, and the cleaning liquid in the sewage suction pipe 15 can at least cover the bend between the first pipe 151 and the second pipe 152, thereby soaking and dissolving the dirt remaining attached to the bend, so as to improve the cleaning effect of the dirt remaining in the bend of the sewage suction pipe 15. For example, t0 is set to 5 seconds and t1 is set to 3 seconds. Of course, t0 can also be equal to t1, and this application is not limited.

[0087] In addition, the suction device 16 is controlled to operate at the first power P1 for time t0, so that the operating power of the suction device 16 remains unchanged during time t0 and time t1, and can also avoid frequent changes in the operating noise of the suction device 16 during the self-cleaning process to weaken the user's perception.

[0088] Of course, in other embodiments, when the suction device 16 is in the first state, the suction device 16 may be controlled to operate at the third power P3 for a time t0 and then at the first power for a time t1. The third power P3 is greater than zero and does not exceed the suction power P0, and the third power P3 is not equal to the first power P1.

[0089] It should be noted that when the third power P3 is greater than the first power P1 and does not exceed the sewage suction power P0, the negative pressure suction force generated by the suction device 16 with the third power P1 can be greater than the negative pressure suction force generated by the first power P1, so that a negative pressure environment can be formed in the sewage suction pipe 15 more quickly to improve the self-cleaning efficiency.

[0090] When the first power P1 is greater than the third power P3 but not greater than the suction power P0, the negative pressure suction force generated by the suction device 16 at the first power P1 can be greater than the negative pressure suction force generated at the third power P1, causing the amount of cleaning liquid sucked into the suction pipe 15 to gradually increase. This, on the one hand, can continuously increase the cleaning area of ​​the suction pipe 15 by the cleaning liquid, thereby improving the self-cleaning effect. On the other hand, it can increase the gravitational potential energy of the cleaning liquid, so that the cleaning liquid falls back to form a surge in the second state of the suction device 16, thereby improving the self-cleaning effect.

[0091] In some embodiments, for a cleaning device 1 with a roller brush device 12, the self-cleaning method provided in the present application also includes: when the suction device 16 is in the first state or the second state, controlling the rotation of the roller brush device 12 of the cleaning device 1, the rotation of the roller brush device 12 includes forward rotation, reverse rotation or alternating forward and reverse rotation.

[0092] It should be noted that the rotation of the roller brush device 12 can also cause the cleaning liquid in the cleaning tank 21 to fluctuate, so that the cleaning liquid can enter the sewage suction pipe 15 by virtue of the fluctuation, thereby repeatedly flushing the sewage suction pipe 15. In this way, the combined effect of the rotation of the roller brush device 12 and the negative pressure suction force of the suction device 16 can increase the fluctuation of the cleaning liquid, thereby improving the self-cleaning effect of the sewage suction pipe 15.

[0093] In addition, the rotation of the roller brush device 12 can also cause the bristles of the roller brush device 12 to rub against the cleaning liquid repeatedly, thereby performing self-cleaning on the roller brush device 12 to avoid residual dirt on the bristles.

[0094] It can be understood that the forward rotation of the roller brush device 12 can be Figure 2 The counterclockwise rotation of the roller brush device 12 can cause the cleaning liquid in the cleaning tank 21 to be drawn into the sewage suction pipe 15. Figure 2 The roller brush device 12 rotates clockwise in the washing tank 21. At this time, the cleaning liquid in the washing tank 21 can be driven to fall back from the sewage suction pipe 15. Of course, the roller brush device 12 can also rotate alternately in forward and reverse directions, and this application does not limit it.

[0095] In some embodiments, the suction device 16 can alternately cycle between the first state and the second state to increase the flushing time and the number of flushing times of the sewage suction pipe 15, thereby improving the self-cleaning effect.

[0096] Thus, the self-cleaning method provided in the present application further includes: controlling the suction device 16 to alternately cycle between the first state and the second state until a first preset condition is satisfied.

[0097] It can be understood that satisfying the first preset condition includes at least one of the following:

[0098] (1) The suction device 16 is controlled to alternately cycle between the first state and the second state until a preset number of cycles is satisfied, wherein the preset number of cycles is not limited to 2, 3, 4 or 5 times.

[0099] (2) Control the suction device 16 to alternately cycle between the first state and the second state until a preset cycle time is satisfied. For example, if the preset cycle time is 5 minutes, the suction device 16 needs to alternately operate between the first state and the second state for 5 minutes before stopping.

[0100] (3) Controlling the suction device 16 to alternately cycle between the first state and the second state until a cycle-off signal is received. For example, the cycle-off signal may be generated by a user manually operating an operation button on the host device 13, so that the user can manually stop the cycle operation state of the suction device 16 to prevent an emergency.

[0101] In some embodiments, after the suction device 16 cycles through the first state and the second state to meet the first preset condition, the self-cleaning method further includes: controlling the suction device 16 to operate at the sewage suction power P0 until a second preset condition is met.

[0102] It is understandable that when the cleaning device 1 flushes the sewage suction pipe 15 a predetermined number of times or for a predetermined time, the suction device 16 can also operate the sewage suction power P0 to suck the cleaning liquid into the sewage collection box 14, thereby cleaning the sewage collection box 14. This arrangement can automatically fill the sewage collection box 14 with cleaning liquid and soak the sewage collection box 14 with the cleaning liquid, thereby facilitating the user to clean the sewage collection box 14.

[0103] Wherein, satisfying the second preset condition includes at least one of the following:

[0104] (1) Controlling the cleaning liquid to reach a preset level in the dirt collection tank 14. This arrangement can prevent the cleaning liquid from being sucked out of the dirt collection tank and causing leakage. It is understood that the cleaning device 1 can be provided with a liquid level sensor on the dirt collection tank 14 to detect the position of the cleaning liquid in the dirt collection tank 14, thereby preventing the cleaning liquid from overflowing the dirt collection tank 14.

[0105] (2) Controlling the cleaning liquid to reach a preset time in the dirt collecting box 14. This arrangement can fully soak the dirt collecting box 14 with the cleaning liquid to dissolve the dirt in the dirt collecting box 14, thereby improving the cleaning effect of the dirt collecting box 14.

[0106] Of course, the second preset condition is not limited to the above two. The user can also control the suction device 16 to stop running the sewage suction power according to usage needs, which will not be elaborated in this application.

[0107] In some embodiments, to improve the cleaning effect, the self-cleaning method of the cleaning device 1 further includes: controlling the cleaning device 1 and / or the maintenance device 2 to heat the cleaning liquid.

[0108] It is understood that the cleaning device 1 and / or the maintenance device 2 may be provided with a heating device that can heat the cleaning liquid so that the cleaning liquid entering the sewage suction pipe 15 can dissolve dirt faster due to the heated temperature, thereby improving the self-cleaning effect of the cleaning device 1. It is understood that the heating device includes a PTC heater, a DPS heater, or an electric heating wire, etc., and this application does not impose any limitation thereto.

[0109] For ease of understanding, this application will be described below using a specific self-cleaning method of the cleaning device 1 as an example.

[0110] Taking the cleaning device 1 as an example, a floor scrubber, when a user uses the floor scrubber to clean the floor, dirt on the floor can be sucked into the dirt collection tank 14 along the floor scrubber's suction pipe 15. It is understandable that the surface of the floor scrubber's suction pipe 15 typically has a pleated structure. These pleated structures are stacked in multiple layers to enable the suction pipe 15 to bend flexibly to accommodate the user holding the floor scrubber's handle (such as the main unit 13) to drive the roller brush device 12 to move. However, dirt on the floor includes hair, paper scraps, small particles of garbage, sticky sauces, and other forms. These dirt easily remain attached to the surface of the suction pipe 15, not only easily accumulating to form stubborn dirt, but also easily producing chemical reactions in the wet pipe to corrode the pipe.

[0111] The self-cleaning method of the cleaning device 1 provided in this application, when applied to a floor scrubber, may include:

[0112] The suction device 16 is controlled to operate at a suction power not exceeding P0, so that the suction device 16 has an off state with zero operating power and an on state with non-zero operating power. The suction device 16 is controlled to remain in the on state for a time period t1. The suction device 16 is controlled to remain in the off state for a time period t2, where t2 is less than t1. The suction device 16 is controlled to alternate between the on state and the off state at least once.

[0113] With this configuration, after the scrubber is docked with the maintenance equipment 2, part of the scrubber's roller brush assembly 12 and the inlet of the sewage suction pipe 15 can be immersed in the cleaning fluid in the cleaning tank 21. When the scrubber's suction device 16 operates for a time t1 at a power level greater than zero but not exceeding the suction power, the cleaning fluid is drawn into the sewage suction pipe 15 by negative pressure and prevents it from entering the sewage collection tank 14. When the scrubber's suction device 16 stops for a time t2, the negative pressure within the sewage suction pipe 15 disappears, allowing the cleaning fluid in the sewage suction pipe 15 to fall back into the cleaning tank 21. Thus, as the scrubber's suction device 16 alternates between operating and stopping, the cleaning fluid in the cleaning tank 21 can enter and be discharged from the sewage suction pipe 15, creating a reciprocating flow within the suction pipe 15, forming a surge. The impact force generated by the surge allows the cleaning fluid to repeatedly flush the sewage suction pipe 15, self-cleaning the pipe.

[0114] At the same time, the duration t2 of the sewage suction pipe 15 in the closed state is shorter than the duration t1 in the working state, which can weaken the user's feeling of shutting down the floor scrubber.

[0115] In some embodiments, the suction device 16 of the floor scrubber can also operate at the first power P1 for time t0 and time t1 in sequence, so as to clearly enter the sewage suction pipe 15 and improve the cleaning effect of the sewage suction pipe 15.

[0116] Specifically, the self-cleaning method of the floor scrubber can be performed according to the contents shown in Table 1 below.

[0117] After the floor scrubber is docked with the maintenance device 2, the floor scrubber can perform a self-cleaning mode, including:

[0118] Step 1: Control the suction device 16 of the floor scrubber to operate at the first power P1 for a time t0.

[0119] Step 2: Control the suction device 16 of the floor scrubber to operate at the first power P1 for a time t1.

[0120] Step 3: Control the suction device 16 of the floor scrubber to remain closed for a period of time t2.

[0121] Step 4: Control the suction device 16 of the floor scrubber to alternately cycle through steps 2 and 3.

[0122] It can be understood that the suction device 16 of the floor scrubber can be controlled to cycle twice.

[0123] In this way, the floor scrubber can complete the self-cleaning of the sewage suction pipe 15 .

[0124] Of course, in the self-cleaning mode of some floor scrubbers, the self-cleaning method may further include step 5 shown in Table 1: controlling the suction device 16 of the floor scrubber to operate at the dirt suction power P0.

[0125] With this arrangement, the cleaning liquid in the cleaning tank 21 can be sucked into the dirt collecting box 14 , thereby enabling the dirt collecting box 14 to be self-cleaned.

[0126] It can be understood that the sewage suction power P0 can be set to 120W, the first power P1 can be set to 30W, t0 can be set to 5 seconds, t1 can be set to 3 seconds, and t2 can be set to 2 seconds.

[0127] time power t0 P1 t1 P1 t2 0W t1 P1 t2 0W t1 P1 t2 0W P0

[0128] Table 1

[0129] It is understandable that the suction device 16 of the floor scrubber can also operate at a non-zero power that does not exceed the sewage suction power for a period of time t2, and this application does not impose any limitation thereto.

[0130] The technical solutions or technical features described in the above embodiments may be combined or supplemented with each other without conflict. The scope of protection of this disclosure is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this disclosure shall be included in the scope of protection of this disclosure.

Claims

1. A self-cleaning method for a cleaning device, characterized in that: include: Controlling the suction device of the cleaning equipment to operate at a first power P1 for a time t1, so that the suction device is in a first state; controlling the suction device to operate at a power lower than the first power P1 for a time t2, where t2 is lower than t1, so that the suction device is in a second state; The first power P1 is greater than zero and does not exceed the sewage suction power P0 of the suction device.

2. The self-cleaning method according to claim 1, characterized in that The step of controlling the suction device to operate at a power lower than the first power P1 for a period of time t2 includes: Controlling the suction device to operate at zero power for a period of time t2; Alternatively, the suction device is controlled to operate at a second power P2 for a time t2, where the second power P2 is greater than zero and less than the first power P1.

3. The self-cleaning method according to claim 2, characterized in that: When the suction device is in the first state, the self-cleaning method further includes: Controlling the suction device to operate at a first power P1 for time t0 and time t1 in sequence, where t0 is not less than t1; Alternatively, the suction device is controlled to operate at a third power P3 for t0, and then controlled to operate at the first power for t1, wherein the third power P3 is greater than zero and does not exceed the sewage suction power P0, and the third power P3 is not equal to the first power P1.

4. The self-cleaning method according to claim 1, characterized in that The first power P1 does not exceed 30% of the sewage suction power P0.

5. The self-cleaning method according to claim 1, characterized in that: The self-cleaning method further comprises: When the suction device is in the first state or the second state, the roller brush device of the cleaning equipment is controlled to rotate, and the rotation of the roller brush device includes forward rotation, reverse rotation, or alternating forward and reverse rotation.

6. The self-cleaning method according to any one of claims 1 to 5, characterized in that: The self-cleaning method further comprises: Controlling the suction device to alternately cycle between the first state and the second state until a first preset condition is satisfied; When the first preset condition is met, the suction device is controlled to operate at the sewage suction power P0 until a second preset condition is met.

7. A self-cleaning method for cleaning equipment, characterized in that: include: The suction device of the cleaning equipment is controlled to operate in a state where the suction power does not exceed P0, so that the suction device has a closed state with zero operating power and a working state with non-zero operating power: Controlling the suction device to be in the working state for a period of time t1; Controlling the suction device to be in the closed state for a period of time t2, where t2 is less than t1; The suction device is controlled to alternately cycle between the working state and the closed state at least once.

8. A cleaning device, characterized in that: It comprises a control device, a dirt collecting box for collecting dirt, a dirt suction pipe connected to the dirt collecting box, and a suction device acting on the dirt suction pipe; the control device can implement the self-cleaning method described in any one of claims 1 to 7; the suction device can operate the dirt suction power to suck the cleaning liquid into the dirt collecting box along the dirt suction pipe.

9. The cleaning device according to claim 8, characterized in that The cleaning device also includes a shell device and a roller brush device rotatably connected to the shell device. At least part of the sewage suction pipe is detachably arranged on the shell device, and at least part of the inlet of the sewage suction pipe is arranged toward the roller brush device.

10. The cleaning device according to claim 9, characterized in that The cleaning device also includes a host device connected to the shell device, and the dirt collecting tank is located in the host device; the dirt suction pipe includes at least two pipes connected to each other, and the at least two pipes include a first pipe located in the shell device and a second pipe located in the dirt collecting tank, and the first pipe is connected to the second pipe.

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