Self-cleaning method of surface cleaning machine

Abstract

The present invention belongs to the technical field of cleaning equipment, and specifically provides a self-cleaning method for a surface cleaning machine, the surface cleaning machine comprising a cleaning roller driven by a driving motor, a sewage suction device driven by a sewage suction motor, and a liquid supply device, the sewage suction device comprising a sewage suction port, a sewage bucket, and a sewage suction pipe connecting the sewage bucket and the sewage suction port, the self-cleaning method comprising the following steps: step A - cleaning roller cleaning stage; step B - sewage suction stage; step C - sewage suction pipe cleaning stage: the sewage suction motor is turned on, the suction power of the sewage suction motor is P1, wherein P1 satisfies the range of 0.3P≤P1<0.5P, the sewage suction device sucks the cleaning liquid into the sewage suction pipe through the sewage suction port, the cleaning liquid flows up and down in the sewage suction pipe to continuously flush the inner wall of the sewage suction pipe and the sewage suction port, the self-cleaning method can, after automatically cleaning the cleaning roller, separately clean the sewage suction port and the sewage suction channel, and has high cleaning efficiency and good cleaning effect.

Description

Technical Field

[0001] The invention belongs to the technical field of cleaning equipment, and specifically provides a self-cleaning method of a surface cleaning machine. Background Art

[0002] As people's living standards improve, a variety of surface cleaning devices have gradually entered people's daily lives, providing great convenience for cleaning the floors of houses. One type of existing surface cleaning device includes a cleaning roller, a dirt collection box, and a scraping guide member disposed on a cleaning assembly. The cleaning roller rotates in contact with the surface to be cleaned to wipe the surface to be cleaned, and the scraping guide member scrapes the rotating cleaning roller. Dirt adsorbed by the cleaning roller is scraped off and flows into the dirt collection box. Another type of surface cleaning device has the dirt collection box and water tank both disposed on a body with a handle. This requires a dirt suction motor disposed on the body, a dirt suction channel disposed within the cleaning assembly, and a dirt suction port disposed at the bottom of the cleaning assembly. With the assistance of the cleaning roller, the dirt suction motor draws dirt from the cleaning roller and the floor through the dirt suction port and the dirt suction channel into the dirt collection box on the body.

[0003] To facilitate cleaning of the cleaning rollers of surface cleaning devices, more and more surface cleaning devices are equipped with cleaning components. When the cleaning rollers need to be cleaned, the surface cleaning device is placed in the cleaning tank of the cleaning component, and the rotating cleaning rollers can complete self-cleaning. Although existing surface cleaning devices can use the cleaning components to complete self-cleaning of the cleaning rollers, they cannot automatically clean the suction ports and suction channels. Over time, bacteria will breed and odors will be emitted, which will not provide a good customer experience. Summary of the Invention

[0004] In order to solve the above problems in the prior art, the present application provides a self-cleaning method for a surface cleaning system, which can clean the sewage suction port and the sewage suction channel after automatically cleaning the cleaning roller, and has a good cleaning effect.

[0005] A self-cleaning method for a surface cleaning machine, the surface cleaning machine comprising a cleaning roller driven by a drive motor, a sewage suction device driven by a sewage suction motor, and a water supply device, the sewage suction device comprising a sewage suction port, a sewage bucket, and a sewage suction channel connecting the sewage bucket and the sewage suction port, the self-cleaning method comprising the following steps:

[0006] Step A - Cleaning roller cleaning stage: Turn on the liquid supply device to spray cleaning liquid onto the cleaning roller or into the cleaning tank; turn on the drive motor to drive the cleaning roller to rotate and clean;

[0007] Step B - Sewage Suction Stage: Turn on the sewage suction motor, and the sewage suction device sucks the liquid on the roller brush into the sewage tank through the sewage suction port and the sewage suction channel. The rated power of the sewage suction motor is P;

[0008] The self-cleaning method further comprises:

[0009] Step C-cleaning the sewage suction channel: the sewage suction motor is turned on, and the suction power of the sewage suction motor is P1, where 0.3P≤P1<0.5P. Under the action of the sewage suction motor, the sewage suction device transports the cleaning liquid into the sewage suction channel through the sewage suction port. The cleaning liquid flows in the sewage suction channel, continuously flushing the inner wall of the sewage suction channel and the sewage suction port.

[0010] Furthermore, the length of the sewage suction channel is L, 12cm≤L≤24cm.

[0011] Furthermore, the height to which the cleaning liquid is driven to rise in the sewage suction channel by the sewage suction motor is H, wherein 0.3L≤H<L.

[0012] Furthermore, the suction power of the sewage suction motor changes in a pulsed, sinusoidal or stepped waveform, so that the cleaning liquid forms a regular up and down flow in the sewage suction channel, constantly flushing the sewage suction port and the inner wall of the sewage suction channel; or, the suction power of the sewage suction motor changes in a variety of waveforms alternately, so that the cleaning liquid forms a turbulent flow or torrent in the sewage suction channel, constantly flushing the sewage suction port and the inner wall of the sewage suction channel.

[0013] Furthermore, step C is arranged after step B, and in step B, the driving motor is turned on and the cleaning roller rotates continuously.

[0014] Furthermore, the self-cleaning method further includes step D - a suction and air-drying phase: the cleaning roller rotates, the suction device is activated, and the suction motor draws liquid from the cleaning roller, the suction port, and the suction channel through the suction port and the suction channel into a waste storage tank until the liquid is completely absorbed and no liquid is thrown off the bristles of the cleaning roller. Furthermore, the self-cleaning method further includes step E - a rinsing phase: the suction device draws liquid from the suction channel through the suction port and the suction channel into a waste storage tank. Simultaneously, new cleaning fluid is supplied, and the cleaning roller rotates to clean the cleaning roller, the suction port, and the suction channel.

[0015] Furthermore, the step E-rinsing stage is arranged after the step C-cleaning the sewage suction channel stage; or, the step E is arranged before the step D-sewage suction and air drying stage.

[0016] Furthermore, the step C is arranged during the sewage suction step B and is performed alternately with the sewage suction step B; or, the step C is arranged before the step B.

[0017] Furthermore, in step A, the liquid supply device and the drive motor are turned on at the same time; or, in step A, the liquid supply device is turned on first, and then the drive motor is turned on.

[0018] It will be understood by those skilled in the art that the self-cleaning method of the surface cleaning system described above in this application has at least the following beneficial effects:

[0019] 1. By adding step C - cleaning the sewage suction channel - to the automatic cleaning process of the floor scrubber: the sewage suction motor is turned on, the suction power of the sewage suction motor is P1, and the suction power of the sewage suction motor is set between 0.3P≤P1<0.5P, so that the sewage suction device draws the cleaning liquid into the sewage suction channel through the sewage suction port. The cleaning liquid flows in the sewage suction channel to continuously flush the inner wall of the sewage suction channel and the sewage suction port, so that the cleaning roller can achieve self-cleaning in the cleaning tank, and the sewage suction port and sewage suction channel can also achieve self-cleaning, reducing the user's cleaning work and improving the user experience. In addition, the self-cleaning of the sewage suction channel and sewage suction port covers most areas of the sewage suction port and sewage suction channel, so that the sewage suction port and sewage suction channel are also well cleaned, avoiding the dirt adhesion, mold and even odor caused by the inner wall of the sewage suction channel and the area near the sewage suction port due to long-term lack of cleaning, thereby reducing the user's secondary cleaning work.

[0020] When the power of the sewage suction motor is adjusted so that its actual suction power is P1 ≥ 0.5P, the cleaning liquid will quickly fill the pipe along the sewage suction channel under the negative pressure of the sewage suction motor and rise to the highest point in the sewage suction channel or be sucked into the sewage tank. The cleaning liquid has no flow space in the sewage suction channel and can only carry away the dust or sewage on the inner wall surface of the sewage suction channel. The impact force of the cleaning liquid on the inner wall of the sewage suction channel is insufficient, and the stubborn stains stuck on the sewage suction channel cannot be effectively soaked and difficult to be carried away by the water flow, resulting in a very poor cleaning effect on the sewage suction channel and the sewage suction port. When the power of the sewage suction motor is adjusted so that its actual suction power is P1 less than 0.3P, the suction power of the sewage suction motor is insufficient, and the cleaning liquid can only stay near the sewage suction port and cannot enter the sewage suction channel. It can only flush the sewage suction port but cannot clean the sewage suction channel.

[0021] 2. By setting the length of the sewage suction channel to 12cm≤L≤24cm, and coordinating it with the power of the sewage suction motor, the cleaning liquid can effectively enter the sewage suction channel and flow in the sewage suction channel of this length, continuously cleaning the sewage suction port and the inner wall of the sewage suction channel. This ensures that when the sewage suction motor uses a suction power of 0.3P to clean the sewage suction channel, the cleaning liquid can rise into the sewage suction channel and rise from the top to the highest point inside it, and then flow down from the highest point to the sewage suction port, repeatedly flushing the inner wall of the sewage suction channel, saving resources and ensuring the cleaning effect of the sewage suction channel; it also ensures that when the sewage suction motor uses a suction power of less than 0.5P, the pressure of the cleaning liquid driven by the sewage suction motor is sufficient and can rise into the sewage suction channel without jumping out of the sewage suction channel and flow inside it, which can concentrate the cleaning liquid in the sewage suction channel and increase the flow rate of the liquid in the sewage suction channel per unit area per unit time, so as to produce It generates enough impact force to repeatedly flush the inner wall of the sewage suction channel without changing the structure of the surface cleaning machine, so that the cleaning effect of the sewage suction channel is good, and resource utilization is maximized; and when the dirty cleaning liquid after cleaning the cleaning roller or the surface cleaning machine cleans the floor, the cleaning machine can quickly draw the dirty liquid into the sewage bucket to complete the self-cleaning of the cleaning roller or the cleaning work of the floor scrubber, ensuring the cleaning and self-cleaning efficiency of the cleaning roller while thoroughly cleaning the sewage suction port and the sewage suction channel, so as to maximize resource utilization, and make the machine body structure simple and reasonable in size, which ensures that the installation of the machine body is simple and easy to clean, and does not require a sewage suction motor with too much power.

[0022] When L is less than 12cm and the suction power is ≥0.5P, the cleaning liquid is directly sucked into the suction bucket under the action of the suction motor, and cannot stay in the suction channel and move up and down repeatedly, and cannot achieve the purpose of flushing the suction channel;

[0023] When L is greater than 24cm and the suction power is less than 0.3P, the power of the suction motor is insufficient to drive the cleaning liquid to the upper end of the suction channel. The lower end and the suction port of the suction channel can only be repeatedly flushed, leaving a dead corner at the upper end that cannot be reached, and the suction channel cannot be thoroughly cleaned.

[0024] 3. By setting the height H at which the cleaning liquid rises within the suction channel when driven by the suction motor to 0.3L ≤ H < L, the suction motor can drive the cleaning liquid to a minimum of 0.3L in the suction channel without overflowing the channel. This allows the cleaning liquid to surge up and down within the channel, continuously impacting the inner wall of the channel, effectively cleaning the inner wall of the channel and the suction port. When H is less than 0.3L, the suction motor lacks power, preventing the cleaning liquid from continuously impacting the inner wall of the channel. Consequently, the upper end of the channel is not properly cleaned, leaving blind spots.

[0025] 4. By changing the suction power of the sewage suction motor to a pulsed, sinusoidal, or stepped waveform, the cleaning liquid forms a regular up-and-down flow in the sewage suction channel, continuously flushing the sewage suction port and the inner wall of the sewage suction channel; or, by changing the suction power of the sewage suction motor to a plurality of waveforms alternately, the cleaning liquid forms a turbulent flow in the sewage suction channel, continuously flushing the sewage suction port and the inner wall of the sewage suction channel. This prevents the liquid flow in the sewage suction channel from forming turbulent flow, and each liquid flow collides with each other, continuously jetting onto the inner wall of the sewage suction channel. The liquid flow that is taken in first is reflected back and collides with the liquid flow that enters later, forming a torrent, which continuously flushes the sewage suction port and the inner wall of the sewage suction channel, thereby achieving the purpose of cleaning the sewage suction port and the sewage suction channel.

[0026] 5. The stage of step C-cleaning the sewage suction channel is set after step B-sewage suction step, and in step B-sewage suction step, the drive motor is turned on and the cleaning roller is continuously rotated, so that the cleaning liquid cleaning the sewage suction channel is clean, and the sewage suction channel can be thoroughly cleaned without being re-contaminated by the dirty liquid remaining in the roller brush. In the sewage suction step, the drive motor is first turned on so that the roller brush can assist in sewage suction, so that the sewage suction motor can better suck the sewage from the cleaning roller and clean the cleaning roller more thoroughly. After the cleaning roller is cleaned, the dirty cleaning liquid on the cleaning roller is sucked into the sewage storage bucket by the sewage suction motor. When cleaning the sewage suction channel again, clean cleaning liquid is sprayed onto the cleaning roller and then drawn into the sewage suction channel to clean the sewage suction channel. Since the cleaning roller has been cleaned, the cleaning liquid that enters the sewage suction channel again is clean and continuously impacts the sewage suction channel, so that the sewage suction channel is not re-contaminated and is cleaned more thoroughly.

[0027] 6. The self-cleaning method further includes step D—a suction and air-drying phase: the cleaning roller rotates, the suction device activates, and the suction motor draws liquid from the cleaning roller, suction port, and suction channel through the suction port and channel into a waste storage tank until the liquid is completely absorbed and no liquid is thrown off the bristles of the cleaning roller. The air-drying phase further draws excess moisture from the cleaning roller, suction port, and channel, ensuring they remain dry and preventing bacterial growth, mold, and odor from long-term moisture.

[0028] 7. The self-cleaning method further includes step E—a rinsing phase: the suction device draws the liquid after cleaning the suction channel through the suction port and the suction channel into the waste storage tank. Simultaneously, new cleaning liquid is supplied, and the cleaning roller rotates to clean the cleaning roller, the suction port, and the suction channel. The rinsing phase allows the cleaning roller, the suction port, and the suction channel to be rinsed again with clean cleaning liquid, resulting in a more thorough cleaning process and preventing residual cleaning liquid or contaminated cleaning liquid from causing secondary contamination of the cleaning roller, the suction port, and the suction channel.

[0029] 8. By placing step E) (rinsing) after step C) (cleaning the sewage suction channel), the cleaning roller, the sewage suction port, and the sewage suction channel are cleaned again with clean cleaning liquid, making the cleaning more thorough and preventing any residual dirty cleaning liquid. Air drying is then performed, ensuring that the cleaning roller, the sewage suction port, and the sewage suction channel are cleaned more thoroughly. Alternatively, step E) can be placed before step D) (sucking and air-drying). This ensures that the cleaning roller, the sewage suction port, and the sewage suction channel are cleaned more thoroughly, preventing secondary contamination of the cleaning roller, the sewage suction port, and the sewage suction channel by dirty cleaning liquid. Furthermore, after thorough cleaning, the cleaning roller is sucked and air-dried again, achieving a better self-cleaning effect and preventing bacterial growth. This prevents the cleaning roller from becoming dirty and moldy, which shortens its service life.

[0030] 9. The step C-cleaning the sewage suction channel is arranged during the sewage suction step B-sewage suction step, and is performed alternately with the sewage suction step B-sewage suction step; this ensures that the dirty cleaning liquid used to clean the sewage suction channel each time is collected in the sewage storage barrel, and the sewage suction channel will not be contaminated again, thereby saving more energy and making self-cleaning faster.

[0031] Alternatively, the step C-cleaning the sewage suction channel is arranged before the step B-sewage suction step, which ensures that the dirty cleaning liquid used to clean the sewage suction channel is collected into the sewage bucket in time each time, and the cleaning liquid that enters the sewage suction channel again later is clean, thereby improving the cleaning efficiency and avoiding secondary pollution.

[0032] 10. In step A, the liquid supply device and the drive motor are turned on simultaneously; alternatively, in step A, the liquid supply device is turned on first, and then the drive motor is turned on. This ensures that the bristles of the cleaning roller can be evenly wetted, making cleaning easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Some embodiments of the present application are described below with reference to the accompanying drawings, in which:

[0034] Figure 1 This is a schematic diagram of the surface cleaning device placed on the cleaning seat in the first embodiment of the present application;

[0035] Figure 2 It is a schematic diagram of the cleaning seat in the first embodiment of the present application;

[0036] Figure 3 This is a schematic diagram of the movement of the cleaning liquid in the sewage suction channel of the present application.

[0037] Description of reference numerals:

[0038] 1-body; 11-water tank; 12-sewage container; 13-sewage suction motor; 14-sewage suction channel; 15-sewage suction port; 2-cleaning assembly; 21-frame; 22-machine cover; 23-water spray port; 3-cleaning roller; 4, cleaning seat; cleaning tank 41. DETAILED DESCRIPTION

[0039] It should be understood by those skilled in the art that the embodiments described below are only part of the embodiments of the present application, rather than all the embodiments of the present application, and that these embodiments are intended to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Based on the embodiments provided in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should still fall within the scope of protection of the present application.

[0040] It should be noted that in the description of this application, terms such as "center," "upper," "lower," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer" that indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be understood as a limitation on this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0041] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0042] Example 1

[0043] The present invention provides a surface cleaning machine and a cleaning seat 4, such as Figure 1As shown, the surface cleaning machine includes a body 1 and a cleaning assembly 2 hinged to the body 1, the body 1 is provided with a water tank 11, a dirt bucket 12 and a dirt suction motor 13, the cleaning assembly 2 includes a frame 21, a driving motor 24 arranged on the frame, a cleaning roller 3 arranged at the bottom of the frame 21 and a cover 22 covered on the frame 21, the frame 21 is provided with a dirt suction channel 14 connected to the dirt bucket 12, the dirt suction port 15 of the dirt suction channel 14 is arranged toward and close to the cleaning roller 3, and the cover 22 is also provided with a water spray port 23, the cleaning roller 3 is driven to rotate by a driving motor (not shown in the figure), during automatic cleaning, the surface cleaning machine is placed on a cleaning seat 4, the cleaning seat is provided with a cleaning tank 41, and the cleaning roller 3 is correspondingly placed in the cleaning tank 41. The length of the sewage suction channel is L, where 12 cm ≤ L ≤ 24 cm. The suction power of the sewage suction motor is P1, where 0.3 P ≤ P1 < 0.5 P. The height to which the cleaning liquid rises within the sewage suction channel is H, where 0.3 L ≤ H < L. In this embodiment, the length of the sewage suction channel is 18 cm, the suction power P1 of the sewage suction motor is 0.45 P, and the suction power of the sewage suction motor varies in a pulsed manner. Under the influence of this variation in the suction power waveform of the sewage suction motor, the height H to which the cleaning liquid rises within the sewage suction channel is 0.8 L.

[0044] When the surface cleaning machine needs to be cleaned, the surface cleaning machine is placed on the cleaning seat and the automatic cleaning function is started. The automatic cleaning working process of the surface cleaning machine is as follows:

[0045] 1) Entering step A - cleaning roller cleaning phase: At this point, first turn on the liquid supply device. In this embodiment, the liquid supply device includes a water tank and a liquid spray port. The cleaning liquid in the water tank is delivered to the liquid spray port through the water supply channel and sprayed onto the cleaning roller or the cleaning tank. Then, turn on the drive motor, which drives the cleaning roller to rotate and clean the roller brush on the cleaning roller.

[0046] 2) After the cleaning roller is cleaned, step B - the sewage suction stage is entered: the sewage suction motor is turned on. In this step, the liquid supply device is turned off, the drive motor continues to work, and the cleaning roller is driven to rotate continuously. The sewage suction motor sucks the liquid on the roller brush of the cleaning roller through the sewage suction port and the sewage suction channel to the sewage bucket. The rated power of the sewage suction motor is P.

[0047] 3) After the suction phase ends, the system proceeds to step C - cleaning the suction channel: the liquid supply device is restarted, spraying cleaning liquid onto the cleaning roller and the cleaning tank. The suction motor and drive motor continue to operate, with the suction motor's suction power (P1) being 0.45P. Driven by the suction motor and cleaning roller, the cleaning liquid in the cleaning tank is drawn into the suction channel through the suction port. The cleaning liquid flows through the channel, continuously flushing the inner wall of the channel and the suction port. The suction motor's suction power is pulsed, creating a regular up-and-down flow of cleaning liquid within the channel, continuously flushing the suction port and the inner wall of the channel. The suction motor drives the cleaning liquid up to a height (H) of 0.8L within the channel.

[0048] 4) After cleaning the sewage suction channel, the liquid supply device stops working first, and then the driving motor and the sewage suction motor continue to work for a period of time, thereby sucking the cleaning liquid for cleaning the sewage suction channel into the sewage tank, and then the driving motor and the sewage suction motor stop working at the same time, and the automatic cleaning is completed.

[0049] By adding step C - the stage of cleaning the sewage suction channel in the automatic cleaning process of the floor scrubber: the sewage suction motor is turned on, the suction power P1 of the sewage suction motor is 0.45P, and the control device controls the sewage suction motor to perform pulse changes at a power of 0.45P, so that the sewage suction device sucks the cleaning liquid into the sewage suction channel through the sewage suction port, and the cleaning liquid flows up and down in the sewage suction channel, thereby continuously flushing the inner wall of the sewage suction channel and the sewage suction port up and down, so that the cleaning roller can realize self-cleaning in the cleaning tank, and the self-cleaning of the sewage suction channel and the sewage suction port covers most areas of the sewage suction port and the sewage suction channel, realizing intelligent self-cleaning of the sewage suction channel, and making the sewage suction port and the sewage suction channel clean more thoroughly, avoiding the dirt adhesion, mold and even odor caused by the inner wall of the sewage suction channel and the sewage suction port not being cleaned for a long time, thereby reducing the user's secondary cleaning work and improving the user experience.

[0050] Since the length L of the sewage suction channel in this embodiment is 18 cm, it cooperates with the power of the sewage suction motor of 0.45P, so that the cleaning liquid can effectively enter the sewage suction channel and flow up and down in the sewage suction channel. The height of the cleaning liquid rising in the sewage suction channel is 0.8L. Under the action of the pulse flow, the first wave of cleaning liquid first enters the sewage suction channel through the sewage suction port and rises to 0.8L, then stops and falls by gravity. Before it falls completely, the second wave of pulse flow enters again from the sewage suction port, and the two collide and impact, and so on. This allows the cleaning liquid to rise to the highest point of the sewage suction channel and flow up and down therein, constantly flushing the inner wall of the sewage suction channel, thereby saving resources and ensuring the cleaning effect of the sewage suction channel, and maximizing resource utilization. Moreover, with this self-cleaning method, when the dirty cleaning liquid after cleaning the cleaning roller or the surface cleaning machine is cleaning the floor, the cleaning machine can quickly draw the dirty liquid into the sewage bucket to complete the self-cleaning of the cleaning roller or the cleaning work of the floor scrubber, ensuring the cleaning and self-cleaning efficiency of the cleaning roller while thoroughly cleaning the sewage suction port and the sewage suction channel, maximizing resource utilization and making the machine body structure simple and reasonable in size, which not only ensures that the installation of the machine body is simple and easy to clean, but also does not require a sewage suction motor with too much power.

[0051] It is understood that the suction power of the sewage suction motor can also be alternating with multiple waveforms, so that the cleaning liquid forms turbulent flow in the sewage suction channel, continuously flushing the sewage suction port and the inner wall of the sewage suction channel. Innovations such as the sewage suction motor operating mode and the operating power variation mode that can change the direction of the liquid flow entering the sewage suction channel to prevent turbulent flow or laminar flow, and the liquid flow entering the sewage suction barrel continuously flushing the inner wall of the sewage suction channel, are all within the scope of protection of the present invention and will not be exemplified here.

[0052] Of course, it is understandable that in the step A - cleaning roller cleaning stage, the liquid supply device and the drive motor are turned on at the same time; such solutions that do not deviate from the intention of the present invention are within the scope of protection of the present invention and will not be given as examples here.

[0053] The self-cleaning method of the present invention adds a process for cleaning the sewage suction channel separately. By controlling the suction power of the sewage suction motor, the cleaning liquid is allowed to flow up and down in the sewage suction channel, so that the inner wall of the sewage suction channel is continuously flushed and cleaned by the cleaning liquid, so that the sewage suction channel can be cleaned separately with good cleaning effect. At the same time, while cleaning the sewage suction channel, the cleaning roller is also cleaned again, and the self-cleaning effect of the floor scrubber is good. At the same time, there is no need to change the structure of the floor scrubber itself, and the cleaning roller, sewage suction port and sewage suction channel are automatically cleaned, which saves resources, makes the floor scrubber more intelligent, and is easy to maintain, more convenient and hygienic to use, and also reduces the time and labor of customers in maintaining the floor scrubber, and provides a better experience.

[0054] Example 2:

[0055] The difference between this embodiment and the first embodiment is that after the self-cleaning method has cleaned the sewage suction channel, a step D - sewage suction and air drying stage is further provided.

[0056] In this embodiment, the length of the surface cleaning machine's suction channel is 15 cm, and the suction power of the suction motor varies in a stepwise manner, with the suction power P1 of the suction motor switching between 0.3 P and 0.4 P. Under the influence of this waveform variation in the suction power of the suction motor, the height to which the cleaning liquid rises within the suction channel varies between 0.5 L and 0.7 L. Because the length L of the suction channel in this embodiment is 15 cm, coupled with the switching of the suction power of the suction motor between 0.3 P and 0.4 P, the cleaning liquid can effectively enter the suction channel and, under the influence of the stepwise waveform of the suction power, flow up and down within the channel, continuously flushing the inner wall of the channel. The cleaning liquid rises to a height of 0.7L in the sewage suction channel under the action of a sewage suction motor with a suction power of 0.4P. The cleaning liquid rises to a height of 0.5L in the sewage suction channel under the action of a sewage suction motor with a suction power of 0.3P. Assuming that the sewage suction motor first works at a suction power of 0.3P, the first wave of cleaning liquid enters the sewage suction channel through the sewage suction port and rises to 0.5L. After working for a certain period of time, the suction motor is converted to work at a suction power of 0.4P, and the second wave of pulse flow follows from the sewage suction port. It enters the sewage suction channel again and rises to 0.7L. Since the first wave of liquid flow has not completely fallen back under the action of gravity, the second wave of cleaning liquid flow overlaps and collides with it, and this is repeated, so that the cleaning liquid can continue to rise or the two waves collide to generate a torrent and rise to the highest point of the sewage suction channel, and then fall back again before the next liquid flow arrives. In this way, it flows up and down in the sewage suction channel, constantly flushing the inner wall of the sewage suction channel, saving resources and ensuring the cleaning effect of the sewage suction channel, and maximizing resource utilization.

[0057] The specific self-cleaning method is as follows:

[0058] 1) Entering step A - cleaning roller cleaning phase: At this point, first turn on the liquid supply device. In this embodiment, the liquid supply device includes a water tank and a liquid spray port, and sprays the cleaning liquid in the water tank through the liquid spray port onto the cleaning roller or the cleaning tank. Then, turn on the drive motor, which drives the cleaning roller to rotate and clean.

[0059] 2) After the cleaning roller is cleaned, step B - the sewage suction stage is entered: the sewage suction motor is turned on. In this step, the liquid supply device is turned off, the drive motor continues to work, and the cleaning roller is driven to rotate continuously. The sewage suction motor sucks the liquid on the roller brush of the cleaning roller through the sewage suction port and the sewage suction channel to the sewage bucket. The rated power of the sewage suction motor is P.

[0060] 3) After the suction phase is complete, the process proceeds to step C, which involves cleaning the suction channel. The liquid supply device is activated, and cleaning liquid is sprayed into the cleaning tank. The suction motor and drive motor continue to operate, with the suction power of the suction motor varying in steps between 0.3P and 0.4P. Under the action of the suction motor and cleaning roller, the cleaning liquid in the cleaning tank is drawn into the suction channel through the suction port. The cleaning liquid flows within the suction channel, continuously flushing the inner wall of the suction channel and the suction port. The suction motor drives the cleaning liquid to rise to a height H within the suction channel. The heights of the cleaning liquid within the suction channel range from 0.5L to 0.7L, creating a regular upward and downward flow within the suction channel, continuously flushing the suction port and the inner wall of the suction channel. Once the suction channel is cleaned, the liquid supply device stops, and the drive motor and suction motor continue to operate for a period of time, thereby drawing the cleaning liquid from the suction channel into the waste storage tank.

[0061] 4) Then enter step D - suction and air drying stage: at this time, the drive motor continues to work, drives the cleaning roller to continue to rotate, and the suction device restarts. The suction motor sucks the liquid after cleaning the cleaning roller, the suction port and the suction channel into the sewage bucket through the suction port and the suction channel until the liquid is sucked out and no liquid is thrown out of the bristles of the cleaning roller.

[0062] 5) The suction and drying stage is over, and then the drive motor and the suction motor stop working at the same time, and the automatic cleaning is completed.

[0063] In this embodiment, the self-cleaning method adds a sewage suction and air-drying stage, so that the dirty liquid from the sewage suction port and the sewage suction channel is collected in the storage bucket. At the same time, the cleaning roller, sewage suction port and sewage suction channel are air-dried again, which not only ensures the cleanliness of the cleaning roller, sewage suction port and sewage suction channel, but also ensures the dryness of the three through air drying, thereby avoiding the breeding of bacteria and the generation of odor due to long-term moisture.

[0064] Example 3:

[0065] The difference between this embodiment and the first embodiment is that the self-cleaning method further includes step E—rinsing stage.

[0066] In this embodiment, the length of the sewage suction channel of the surface cleaning machine is 20 cm, the suction power of the sewage suction motor is sinusoidally changed, and the suction power P1 of the sewage suction motor varies between 0.35P and 0.45P. Under the action of the suction power waveform change of this sewage suction motor, the height to which the cleaning liquid rises in the sewage suction channel varies between 0.6L and 0.8L. Since the length L of the sewage suction channel in this embodiment is 20 cm, the sewage suction channel is relatively long, and it is matched with the sewage suction motor with a suction power sinusoidally varying between 0.35P and 0.45P, so that the cleaning liquid can effectively enter the sewage suction channel and flow up and down in the sewage suction channel. The height of the cleaning liquid rising in the sewage suction channel varies between 0.6L and 0.8L. Under the action of the sinusoidal waveform suction power, for example, assuming that the first wave of cleaning liquid first enters the sewage suction channel through the sewage suction port with a power of 0.35P and rises to 0.6L, and then stops, and then the second wave of cleaning liquid uses a gradually increasing suction power of 0.36P or 0.37P to allow the cleaning liquid to re-enter the sewage suction channel from the sewage suction port, and then within a certain period of time, it continues to increase at the maximum suction power. The large suction power of 0.45P enters the sewage suction channel again, allowing this wave of cleaning liquid to rise to 0.8L, and then enters the sewage suction channel with a gradually decreasing suction power. Because the liquid flow entering the sewage suction channel has not completely fallen back before the suction power of the sewage suction motor works at 0.45P, the various liquid flows continue to flow into the sewage suction channel and continue to overlap or collide. Under such a change in the suction power waveform, each liquid flow of different power collides and impacts each other and then continues to rise, causing it to rise to the highest point of the sewage suction channel. This is repeated, so that the cleaning liquid can flow up and down between the highest point of the sewage suction channel and the sewage suction port, continuously flushing the inner wall of the sewage suction channel, saving resources while ensuring the cleaning effect of the sewage suction channel and maximizing resource utilization.

[0067] The specific self-cleaning method is as follows:

[0068] 1) Entering step A - cleaning roller cleaning phase: At this point, first turn on the liquid supply device. In this embodiment, the liquid supply device includes a water tank and a liquid spray port, and sprays the cleaning liquid in the water tank through the liquid spray port onto the cleaning roller or the cleaning tank. Then, turn on the drive motor, which drives the cleaning roller to rotate and clean.

[0069] 2) After the cleaning roller is cleaned, step B - the sewage suction stage is entered: the sewage suction motor is turned on. In this step, the liquid supply device is turned off, the drive motor continues to work, and the cleaning roller is driven to rotate continuously. The sewage suction motor sucks the liquid on the roller brush of the cleaning roller through the sewage suction port and the sewage suction channel to the sewage bucket. The rated power of the sewage suction motor is P.

[0070] 3) After the sewage suction stage is completed, step C - cleaning the sewage suction channel is entered: the liquid supply device is started, and the cleaning liquid is sprayed into the cleaning tank. The sewage suction motor and the drive motor continue to move. The suction power of the sewage suction motor is P1, which continuously changes in a sinusoidal wave manner between 0.35P and 0.45P. Under the action of the sewage suction motor and the cleaning roller, the cleaning liquid in the cleaning tank is sucked into the sewage suction channel through the sewage suction port. The cleaning liquid flows in the sewage suction channel, continuously flushing the inner wall of the sewage suction channel and the sewage suction port. The sewage suction motor drives the cleaning liquid to rise to a height H in the sewage suction channel that varies between 0.6L and 0.8L, so that the cleaning liquid forms a regular up and down flow in the sewage suction channel, and continuously overlaps or collides with each other, thereby continuously rising from 0.6L to the highest point, and then falling back to continuously flush the sewage suction port and the inner wall of the sewage suction channel. After repeating this for a period of time, the sewage suction channel is cleaned, the liquid supply device stops working first, and then the drive motor and the sewage suction motor continue to work for a period of time, thereby sucking the dirty cleaning liquid that has cleaned the sewage suction channel into the sewage tank.

[0071] 4) Then proceed to the next step and start step E-rinsing stage: at this time, the liquid supply device is started again to provide new cleaning liquid for the cleaning roller, the sewage suction port and the sewage suction channel. The cleaning roller continues to rotate under the drive motor, and the new cleaning liquid is used to further rinse the cleaning roller, the sewage suction port and the sewage suction channel. Until the rinsing stage is over, the liquid supply device is turned off, and then the drive motor and the sewage suction motor continue to work for a period of time to suck the cleaning liquid for rinsing the cleaning roller, the sewage suction port and the sewage suction channel into the sewage tank.

[0072] 5) Then the suction motor and the drive motor stop working at the same time, and the automatic cleaning is completed.

[0073] The automatic cleaning method of the present invention is to add a rinsing stage after cleaning the sewage suction channel, so that the self-cleaning of the floor scrubber is made more thorough by adding a second rinsing of the cleaning roller, the sewage suction port and the sewage suction channel.

[0074] Example 4:

[0075] The difference between this embodiment and the third embodiment is that the automatic cleaning method further includes step D - the stage of sucking and drying pollutants, and the step E - the stage of rinsing pollutants is arranged after the stage of cleaning the suction channel and before the step D - the stage of sucking and drying pollutants.

[0076] In this embodiment, the length of the sewage suction channel of the surface cleaning machine is 24 cm, and the suction power of the sewage suction motor changes alternately in pulse and step manners. The suction power P1 of the sewage suction motor varies between 0.3P and 0.49P. Under the action of the suction power waveform change of this sewage suction motor, the height to which the cleaning liquid rises in the sewage suction channel varies between 0.5L and 0.9L. Since the length L of the sewage suction channel described in this embodiment is 24 cm, the sewage suction channel is relatively long, and it is combined with the sewage suction motor whose suction power varies between 0.3P and 0.49P in a pulsed and step-by-step manner, so that the cleaning liquid can effectively enter the sewage suction channel and flow up and down in the sewage suction channel. Under the action of the pulse and step-by-step mixed suction power, due to the combination of maximum suction power and small, the cleaning liquid will not directly enter the sewage bucket. There is no need to add a two-way valve between the sewage bucket and the sewage suction channel. The height of the cleaning liquid rising in the sewage suction channel can be controlled to vary between 0.5L and 0.9L. There is no need to change the structure of the floor scrubber, and the cleaning effect is better. For example, assuming that the first wave of cleaning liquid first enters the sewage suction channel through the sewage suction port and rises to 0.5L under the action of the sewage suction motor with a suction power of 0.3P and a pulse waveform, and then stops. Then, the second wave of cleaning liquid is operated by the sewage suction motor with a step-by-step waveform change of the suction power of 0.35P and 0.49P. The increased suction power allows the cleaning liquid to enter the sewage suction channel again from the sewage suction port, so that this wave of cleaning liquid can rise to 0.9L, and then enters the sewage suction channel with a pulse suction power of less than 0.3P. Then the sewage suction motor switches to a step-by-step waveform suction power. rate. Under the action of the suction power change of the sewage suction motor, the liquid flow entering the sewage suction channel has not completely fallen back, so the various liquid flows continue to flow into the sewage suction channel and continue to overlap or collide. Under such a change in the suction power waveform, each liquid flow with different power collides and impacts each other to produce a torrent or turbulence, and then continues to rise under the action of the torrent, so that it rises to the highest point of the sewage suction channel. This is repeated, so that the cleaning liquid can flow up and down between the highest point of the sewage suction channel and the sewage suction port, continuously flushing the inner wall of the sewage suction channel, saving resources and ensuring the cleaning effect of the sewage suction channel, and maximizing resource utilization.

[0077] The specific self-cleaning method is as follows:

[0078] 1) Entering step A - cleaning roller cleaning phase: At this point, first turn on the liquid supply device. In this embodiment, the liquid supply device includes a water tank and a liquid spray port, and sprays the cleaning liquid in the water tank through the liquid spray port onto the cleaning roller or the cleaning tank. Then, turn on the drive motor, which drives the cleaning roller to rotate and clean.

[0079] 2) After the cleaning roller is cleaned, step B - the sewage suction stage is entered: the sewage suction motor is turned on. In this step, the liquid supply device is turned off, the drive motor continues to work, and the cleaning roller is driven to rotate continuously. The sewage suction motor sucks the liquid on the roller brush of the cleaning roller through the sewage suction port and the sewage suction channel to the sewage bucket. The rated power of the sewage suction motor is P.

[0080] 3) After the sewage suction stage is over, step C - cleaning the sewage suction channel is entered: the liquid supply device is started, and the cleaning liquid is sprayed into the cleaning tank. The sewage suction motor and the drive motor continue to move. The length L of the sewage suction channel is 24 cm. The sewage suction channel is relatively long. It is combined with the sewage suction motor whose suction power alternates between 0.3P and 0.49P in pulse and step-by-step manner, so that the cleaning liquid can effectively enter the sewage suction channel and flow up and down in the sewage suction channel. Under the action of the pulse and step-by-step alternating suction power, due to the combination of maximum suction power and small, the cleaning liquid will not directly enter the sewage bucket. There is no need to add a two-way valve between the sewage bucket and the sewage suction channel. The height of the cleaning liquid rising in the sewage suction channel can be controlled to vary between 0.5L and 0.9L. There is no need to change the structure of the floor scrubber, and the cleaning effect is better. Driven by the suction motor and cleaning roller, the cleaning liquid in the cleaning tank is sucked into the suction channel through the suction port. The cleaning liquid flows through the channel, avoiding the formation of regular up-and-down turbulence. Instead, the interaction of various liquid streams at different powers creates a torrent or turbulent flow, continuously flushing the suction port and the inner wall of the suction channel. Once the suction channel has been cleaned for a certain period of time, the liquid supply device stops working, and the drive motor and suction motor continue to operate for a period of time, thereby sucking the dirty cleaning liquid that has cleaned the suction channel into the sewage storage tank.

[0081] 4) Then proceed to the next step and start step E-rinsing stage: at this time, the liquid supply device is started again to provide new cleaning liquid to the cleaning roller, the sewage suction port and the sewage suction channel. The cleaning roller continues to rotate under the drive motor, and the new cleaning liquid is used to further rinse the cleaning roller, the sewage suction port and the sewage suction channel until the rinsing stage is completed and the liquid supply device is closed.

[0082] 5) Then enter step D - suction and air drying stage: the drive motor continues to work, drives the cleaning roller to continue to rotate, and the suction device restarts. The suction motor sucks the liquid after cleaning the cleaning roller, the suction port and the suction channel into the sewage bucket through the suction port and the suction channel until the liquid is sucked out and no liquid is thrown out of the bristles of the cleaning roller.

[0083] 6) The suction and drying stage is over, and then the drive motor and the suction motor stop working at the same time, and the automatic cleaning is completed.

[0084] The self-cleaning method of the floor scrubber of this embodiment adds a rinsing stage and an air-drying stage, and the rinsing stage is arranged before the air-drying stage. After the cleaning roller, the sewage suction port and the sewage suction channel are cleaned, the three are rinsed again, so the cleaning is cleaner and more hygienic. However, since the cleaning roller, the sewage suction port and the sewage suction channel are cleaned multiple times, the water consumption is slightly higher, and after rinsing the three again, the rinsed cleaning liquid needs to enter the storage bucket through the sewage suction port and the sewage suction channel again, so it is wet again. The sewage extraction and air-drying stage is added afterwards, which not only ensures the cleanliness of the cleaning roller, the sewage suction port and the sewage suction channel, but also further ensures that they can be quickly air-dried, avoiding the cleaning roller, the sewage suction port and the sewage suction channel from breeding bacteria, generating odor, and even mold due to long-term moisture, thereby shortening the service life, especially in hidden places such as the sewage suction channel. This improves the sanitary conditions of the floor scrubber, makes it more convenient and intelligent for customers to use, and reduces the burden on customers.

[0085] The step C, cleaning the sewage suction channel, can also be performed during the step B, suctioning the sewage, and can be performed interleaved with the suctioning step B. Alternatively, the step C, cleaning the sewage suction channel, can also be performed before the step B, suctioning the sewage. Such modifications that do not depart from the intent of the present invention are also within the scope of protection of the present invention and are not listed here one by one.

[0086] Of course, it is understandable that a stepped waveform may be used first and then a pulsed waveform, or a sine waveform and a stepped waveform may be combined, etc. Such improvements that do not deviate from the intention of the present invention are also within the scope of protection of the present invention and will not be listed here one by one.

[0087] Of course, it is understandable that the above process method is also applicable to a double-roller floor scrubber with a sewage suction channel or other types of floor scrubbers with a sewage suction channel.

[0088] So far, the technical solutions of the present application have been described in conjunction with the foregoing multiple embodiments. However, it is easy for those skilled in the art to understand that the scope of protection of the present application is not limited to these specific embodiments. Without departing from the technical principles of the present application, those skilled in the art can split and combine the technical solutions in the above-mentioned various embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principles of the present application will fall within the scope of protection of the present application.

Claims

1. A self-cleaning method for a surface cleaning machine, the surface cleaning machine comprising a surface cleaning machine and a base having a cleaning tank, the surface cleaning machine comprising a dirt suction motor, a drive motor, a liquid supply device, a cleaning roller, a dirt suction port, a dirt storage bucket, and a dirt suction channel connecting the dirt storage bucket and the dirt suction port, the drive motor driving the cleaning roller to rotate, the dirt suction port being disposed proximate to the cleaning roller, the surface cleaning machine being placed on a cleaning base so that the cleaning roller performs self-cleaning in the cleaning tank, the self-cleaning method comprising the steps of: Step A - Cleaning roller cleaning stage: Turn on the liquid supply device, spray cleaning liquid onto the cleaning roller or into the cleaning tank, and the cleaning roller rotates for cleaning; Step C - Cleaning the Sewage Suction Channel: The suction motor is turned on and alternately operates at a suction power less than the rated power to draw the cleaning fluid into the suction channel without allowing the fluid to escape. This allows the cleaning fluid to enter the channel in sequence, collide with each other, and change direction, continuously flushing the inner wall of the channel. Step D - sewage suction and air drying stage: the sewage suction motor is controlled to operate at a power greater than that in step C, and the dirty cleaning liquid that has cleaned the sewage suction channel is sucked into the sewage storage bucket.

2. The self-cleaning method of the surface cleaning machine according to claim 1, characterized in that: The method further comprises: Step B - sewage suction stage: start the sewage suction motor and the sewage suction device to suck the cleaning liquid into the sewage bucket; wherein, step C is set after step B; or, step C is set during step B and is performed alternately with step B.

3. The self-cleaning method of the surface cleaning machine according to claim 2, characterized in that: The method further comprises: In step B-sewage suction stage, the sewage suction motor operates at rated power.

4. The self-cleaning method of a surface cleaning machine according to claim 2, characterized in that: In step B, the driving motor is turned on and the cleaning roller continues to rotate.

5. The self-cleaning method of a surface cleaning machine according to claim 1, characterized in that: The method further comprises: The suction power of the sewage suction motor in step C is P1, and the rated power of the sewage suction motor is P, wherein 0.3P≤P1<0.5P.

6. The self-cleaning method of a surface cleaning machine according to claim 5, characterized in that: The suction power P1 of the sewage suction motor changes in steps between 0.3P and 0.4P.

7. The self-cleaning method of a surface cleaning machine according to claim 5, characterized in that: The suction power P1 of the sewage suction motor varies sinusoidally between 0.3P and 0.45P.

8. The self-cleaning method of a surface cleaning machine according to claim 1, characterized in that: The length of the sewage suction channel is L, and the height to which the cleaning liquid is driven to rise in the sewage suction channel by the sewage suction motor is H, wherein 0.3L≤H≤0.9L.

9. The self-cleaning method of a surface cleaning machine according to claim 1, characterized in that: The self-cleaning method further comprises: Step E - rinsing stage: the sewage suction device sucks the liquid after cleaning the sewage suction channel into the sewage bucket through the sewage suction port and the sewage suction pipe. At the same time, new cleaning liquid is provided, and the cleaning roller rotates to clean the cleaning roller, the sewage suction port and the sewage suction channel respectively; wherein, the step E - rinsing stage is set after the C - cleaning the sewage suction channel stage; or, the step E is set before the step D - sewage suction air drying stage.

10. The self-cleaning method of a surface cleaning machine according to claim 1, characterized in that: In step A, the liquid spraying device and the driving motor are turned on simultaneously; or, in step A, the liquid spraying device is turned on first, and then the driving motor is turned on.

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