Floor brush structure, cleaning equipment and control method

Abstract

The invention provides a floor brush structure, cleaning equipment and a control method.The floor brush structure comprises a floor brush body, the floor brush body comprises a bottom plate, the bottom plate is provided with at least one air suction channel, the air suction channel comprises a first end and a second end, and the first end of the air suction channel is located on the bottom plate and faces a to-be-cleaned face; the second end of the suction channel is communicated with a negative pressure source; the rolling brush is arranged at the bottom of the floor brush body, and a dirt suction opening is formed between the rolling brush and the bottom plate; the air suction channel responds to starting of the negative pressure source to suck air between the bottom plate and the to-be-cleaned face from the first end of the air suction channel, and the air is exhausted from the second end of the air suction channel, so that a negative pressure space is formed between the bottom plate and the to-be-cleaned face. According to the floor brush structure, when the negative pressure source is started, the negative pressure space lower than the external atmospheric pressure is formed below the bottom plate, the contact pressure between the rolling brush and the ground is remarkably increased, then the sliding friction force between the rolling brush and the ground is increased, and therefore the cleaning effect of the rolling brush is enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning equipment, and in particular to a floor brush structure, cleaning equipment and control method. Background Art

[0002] Existing cleaning equipment, such as floor scrubbers, usually use a rotating roller brush in conjunction with an air suction structure to clean floor stains and dust. However, for stubborn stains such as highly sticky stains, granular dirt embedded in floor cracks, or solid residues formed after liquid dries, traditional floor brushes cannot effectively remove them by relying solely on the mechanical friction of the roller brush, resulting in incomplete cleaning. To remove such stains, multiple round trips are often required, resulting in low cleaning efficiency and high energy consumption.

[0003] Therefore, a novel floor brush structure is in urgent need of. Summary of the Invention

[0004] In view of this, the embodiments of the present application are dedicated to providing a floor brush structure, cleaning equipment and control method to solve the problems of low efficiency in cleaning stubborn stains and low cleaning rate in the prior art.

[0005] In the first aspect, the present application proposes a floor brush structure, comprising:

[0006] A floor brush body, the floor brush body comprising a bottom plate, at least one suction channel being provided on the bottom plate, the suction channel comprising a first end and a second end, the first end of the suction channel being located on the bottom plate and arranged toward the surface to be cleaned, the second end of the suction channel being connected to a negative pressure source;

[0007] A roller brush, the roller brush being arranged at the bottom of the floor brush body and forming a sewage suction port between the roller brush and the bottom plate;

[0008] In which, in response to the activation of the negative pressure source, the suction channel sucks the gas between the bottom plate and the surface to be cleaned from the first end of the suction channel and discharges it to the second end of the suction channel, so as to form a negative pressure space between the bottom plate and the surface to be cleaned.

[0009] According to the floor brush structure of the present application, a wind shield structure is provided on the bottom plate, and the wind shield structure is provided around the first end of the air suction channel and extends toward the surface to be cleaned.

[0010] According to the floor brush structure of the present application, the negative pressure source is provided in the floor brush body;

[0011] The negative pressure source is configured as a fan, and the air inlet of the fan is connected to the second end of the air suction channel.

[0012] Optionally, an air jet is provided at the rear end of the floor brush body, the air jet is connected to the air outlet of the fan, and the air jet is directed toward the surface to be cleaned.

[0013] Optionally, a heating component is further provided in the first air duct connecting the air outlet of the fan and the air jet.

[0014] According to the floor brush structure of the present application, the floor brush structure is used to be connected to the cleaning device body, and the negative pressure source is the main fan in the cleaning device body.

[0015] Optionally, an electric control valve is provided in the air intake channel, and the electric control valve changes its opening in response to an electric control signal sent by the cleaning device body to change the air flow rate of the air intake channel.

[0016] The floor brush structure according to the present application includes:

[0017] A stain recognition module is provided at the front end of the floor brush body and in front of the roller brush. The detection direction of the stain recognition module is toward the surface to be cleaned. The stain recognition module and the negative pressure source are used to be electrically connected to the controller. The controller is configured to adjust the output power of the negative pressure source according to the recognition result of the stain recognition module.

[0018] Optionally, the floor brush body is provided with a power piece and an auxiliary wheel, the power piece is in transmission connection with the auxiliary wheel, and the controller adjusts the output torque size and / or direction of the power piece according to the output power of the negative pressure source.

[0019] In a second aspect, the present application proposes a cleaning device, comprising a cleaning device body and a floor brush structure as described above connected to the cleaning device body.

[0020] In a third aspect, the present application proposes a control method for controlling the above-mentioned floor brush structure, wherein the floor brush structure further includes a stain recognition module. The control method includes:

[0021] Acquiring a stain image of the surface to be cleaned;

[0022] generating an identification result including at least one stain feature parameter according to the stain image;

[0023] The output power of the negative pressure source is adjusted according to the stain characteristic parameters in the identification result.

[0024] Optionally, the floor brush structure further includes a power member and an auxiliary wheel transmission-connected to the power member, and the control method further includes:

[0025] Acquiring current cleaning mode parameters, wherein the cleaning mode parameters include the output power of the negative pressure source;

[0026] The output torque magnitude and / or direction of the power component is adjusted according to the cleaning mode parameters.

[0027] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0028] The floor brush structure provided in the present application is characterized in that an air intake channel is provided on the bottom plate of the floor brush main body, a first end of which is located on the bottom plate and arranged toward the surface to be cleaned, and a second end is used to connect to a negative pressure source. When the negative pressure source is started, an airflow is formed in the air intake channel from the side of the surface to be cleaned toward the negative pressure source. The air between the bottom plate and the surface to be cleaned is sucked into the air intake channel from the first end of the air intake channel and discharged through the second end connected to the negative pressure source, thereby forming a negative pressure space lower than the atmospheric pressure of the external environment between the bottom plate and the surface to be cleaned. At this time, the air pressure difference between the upper surface of the floor brush main body and the bottom plate below will generate downward pressure on the floor brush toward the surface to be cleaned. The downward pressure is transmitted to the roller brush through the floor brush main body, thereby increasing the contact pressure between the roller brush and the ground surface to be cleaned.

[0029] When the roller brush is rolling, sliding friction is formed between it and the surface to be cleaned, and the sliding friction force also increases with the increase of the contact pressure. The increase in sliding friction force will significantly increase the effectiveness of the roller brush bristles in cleaning stubborn stains. When rotating, the bristles of the roller brush can penetrate deeper into the gaps in the ground or contact sticky stains more forcefully. In addition, increasing the output power of the negative pressure source can significantly increase the above-mentioned air pressure difference, thereby further increasing the pressure of the roller brush on the surface to be cleaned and strengthening the cleaning effect of the roller brush. For example, for dust accumulated in the gaps between floor tiles or sticky residues on the floor, the increased contact pressure can significantly enhance the ability of the roller brush to peel the stains off the ground. Therefore, the cleaning force of the roller brush can be flexibly controlled by adjusting the power of the negative pressure source. For example, when cleaning soft surfaces such as carpets, the increased contact pressure can make the bristles of the roller brush penetrate deeper into the fiber roots of the carpet, effectively removing deep-seated dust, thereby reducing the number of repeated cleanings, improving cleaning efficiency and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Shown is a front view of the floor brush structure of an embodiment of the present application.

[0031] Figure 2 Shown is a three-dimensional diagram of the floor brush structure of an embodiment of the present application.

[0032] Figure 3 Shown Figure 2 Enlarged view of point E in the middle.

[0033] Figure 4 Shown is a bottom view of the floor brush structure of an embodiment of the present application.

[0034] Figure 5Shown is a three-dimensional diagram of the floor brush structure of an embodiment of the present application.

[0035] Figure 6 Shown is a side view of the floor brush structure of an embodiment of the present application.

[0036] Figure 7 Shown are bottom views of floor brush structures of other embodiments of the present application.

[0037] Figure 8 Shown are rear views of floor brush structures according to some further embodiments of the present application.

[0038] Figure 9 for Figure 8 Cross-sectional view in the FF direction.

[0039] Figure 10 Shown is a schematic diagram of the steps of the control method of an embodiment of the present application.

[0040] Figure 11 Shown is another step schematic diagram of the control method of an embodiment of the present application.

[0041] Reference numerals:

[0042] Floor brush structure 1, floor brush body 10, bottom plate 11, air suction channel 12, wind shield structure 13, exhaust port 14, roller brush 15, auxiliary wheel 16, air jet port 17, sewage suction port 18, sewage suction channel 19, first end A, negative pressure source 20, and surface to be cleaned 2. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0044] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0045] For ease of description, spatially relative terms may be used herein to describe the relative position or movement of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," "above," "front," "back," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures undergoes a positional flip or a change in posture or motion state, these directional indications will also change accordingly. For example, an element described as "below" or "below" another element or feature will subsequently be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein will be interpreted accordingly.

[0046] like Figure 1-Figure 3 as well as Figure 9 As shown, the floor brush structure 1 according to an embodiment of the present application includes a floor brush body 10 and a roller brush 15 .

[0047] Specifically, the floor brush body 10 includes a base plate 11, on which is disposed at least one suction channel 12. The suction channel 12 includes a first end A and a second end. The first end A is located on the base plate 11 and faces the surface to be cleaned 2, and the second end is connected to a negative pressure source 20. A roller brush 15 is disposed at the bottom of the floor brush body 10, and a suction port 18 is formed between the roller brush 15 and the base plate 11. In response to activation of the negative pressure source 20, the suction channel 12 draws air between the base plate 11 and the surface to be cleaned 2 from the first end A and discharges it to the second end, thereby forming a negative pressure space between the base plate 11 and the surface to be cleaned 2.

[0048] The bottom plate 11 is generally substantially parallel to the surface to be cleaned 2 , and the bottom plate 11 may be a rectangular or oval flat plate.

[0049] The roller brush 15 is a rotating cleaning structure with bristles on its surface, typically located on the front side of the base plate 11. It rotates when in contact with the surface 2 to be cleaned, generating friction with the surface 2. This removes dirt from the surface 2 and then rolls the removed dirt toward the suction port 18. Due to the presence of the negative pressure space, there is a pressure difference between the upper surface of the floor brush body and the base plate below. This pressure difference increases the pressure of the floor brush body against the ground, resulting in an increase in the pressure between the roller brush and the ground. This in turn increases the sliding friction between the roller brush and the ground, improving the dirt removal effect.

[0050] The roller brush 15 is usually cylindrical in shape, and the bristles can be made of materials of different hardness, such as nylon, silicone, etc., and arranged in a spiral or segmented manner, so as to optimize the stain stripping effect and optimize the effect of convolution of the stain to the suction port 18.

[0051] The sewage suction port 18 is an opening area formed between the roller brush 15 and the bottom plate 11, and is usually located behind or to the side of the roller brush 15. The sewage suction port 18 can also be located below the rotation axis of the roller brush 15, and can suck the dirt convoluted by the roller brush 15 into the sewage suction channel 19. The sewage suction channel 19 is set independently of the air intake channel 12. A main fan is provided on the main body of the cleaning equipment (not shown in the figure), and the main fan is connected to the air outlet of the sewage suction channel 19. When the main fan is started, it can drive the gas at the sewage suction port 18 to flow toward the sewage suction channel 19, and the air flow carries the dirt at the sewage suction port 18 together and is sucked into the sewage suction channel 19. A scraper can also be provided at the lower edge of the sewage suction port 18, and the scraper can assist in guiding the sewage into the sewage suction channel 19.

[0052] The sewage suction port 18 may be a rectangular long slit extending along the axial direction of the roller brush 15 , or may be a segmented opening or a partially widened opening provided according to cleaning requirements.

[0053] The air intake channel 12 connects the negative pressure source 20 with the space outside the base plate 11. When the negative pressure source 20 is activated, a directional flow of gas is formed within the air intake channel 12, driving ambient air from the base plate side of the air intake channel 12 toward the negative pressure source 20. Air between the base plate 11 and the surface to be cleaned 2 is drawn into the air intake channel 12 from a first end A facing the surface to be cleaned and is discharged through a second end connected to the negative pressure source 20. The cross-sectional shape of the air intake channel 12 can be circular or rectangular, and this application does not impose any restrictions.

[0054] The number of the air intake channels 12 can be one or more. When there is one air intake channel 12, it can be centrally arranged on the bottom plate 11; when there are multiple air intake channels 12, the multiple air intake channels 12 can be distributed in a circular, parallel or array manner. According to the spacing distance of the air intake channels 12, when the negative pressure source 20 starts to operate, one air intake channel 12 can form a negative pressure space corresponding to the bottom plate 11 and the surface to be cleaned 2, and a total of multiple spaced negative pressure spaces can be formed between the bottom plate 11 and the surface to be cleaned 2; or at least two air intake channels 12 can form a negative pressure space corresponding to the bottom plate 11 and the surface to be cleaned 2, and a total of multiple spaced negative pressure spaces can be formed between the bottom plate 11 and the surface to be cleaned 2.

[0055] It is understandable that when there are multiple air intake channels 12 , each air intake channel 12 may correspond to one negative pressure source 20 , or multiple air intake channels 12 may ultimately be connected to the same negative pressure source 20 .

[0056] The shape of the opening formed at the first end A of the air intake channel 12 can be circular, square, elliptical or rectangular, and the size of the opening is adapted to the size of the bottom plate 11 .

[0057] The sewage suction port 18 can be located between the roller brush 15 and the first end A, with the roller brush 15 located in front of the sewage suction port 18. When there is only one suction channel 12, the first end A can be centrally located behind the sewage suction port 18. When there are two suction channels 12, the first ends A can be symmetrically located on the left and right sides of the rear side of the sewage suction port 18.

[0058] The negative pressure source 20 is used to drive the airflow from the space between the bottom plate 11 and the surface to be cleaned 2 through the first end A into the air intake channel 12 and out through the second end, thereby creating a pressure difference between the negative pressure space formed between the bottom plate 11 and the surface to be cleaned 2 and the external atmospheric pressure. The pressure difference between the upper and lower surfaces of the floor brush structure 1 causes the floor brush structure to exert an increased pressure on the ground. The output power of the negative pressure source 20 affects the magnitude of the pressure difference. The greater the output power, the stronger the suction force of the negative pressure source 20, and the greater the amount of gas sucked per unit time. In other words, the greater the output power of the negative pressure source 20, the greater the pressure of the floor brush structure 1 on the ground.

[0059] The negative pressure source 20 can be provided in the floor brush structure 1. The floor brush structure 1 is used in a cleaning device, which also includes a main body and a handle, and the floor brush structure 1, the main body, and the handle are connected in sequence. The negative pressure source 20 can also be provided in the main body connected to the floor brush structure 1.

[0060] The negative pressure source 20 is a device that can reduce the air pressure in the space, and can be a vacuum pump, a vacuum generator, an axial flow fan, or a centrifugal fan. This application is not limited to this and can be selected as needed. When there are multiple negative pressure sources 20, some of the negative pressure sources 20 can be of the same type, some of the negative pressure sources 20 can be of different types, or all of the negative pressure sources 20 can be of the same type.

[0061] According to the floor brush structure 1 of the embodiment of the present application, the bottom plate 11 of the floor brush body 10 is provided with an air intake channel 12, the first end A of which is located on the bottom plate 11 and is arranged toward the surface to be cleaned 2, and the second end is used to connect to the negative pressure source 20. When the negative pressure source 20 is started, an airflow is formed in the air intake channel 12, which is driven by the side of the surface to be cleaned 2 toward the negative pressure source 20. The air between the bottom plate 11 and the surface to be cleaned 2 is sucked into the air intake channel 12 from the first end A facing the surface to be cleaned 2, and is discharged through the second end connected to the negative pressure source 20, thereby forming a negative pressure space below the bottom plate 11 that is lower than the external atmospheric pressure. At this time, the air pressure difference between the upper surface of the floor brush body 10 and the bottom plate 11 below will generate a downward pressure toward the surface to be cleaned 2. The downward pressure is transmitted to the roller brush 15 through the floor brush body 10, which significantly increases the contact pressure between the roller brush 15 and the ground.

[0062] When the roller brush 15 is rolling, it creates sliding friction with the surface to be cleaned 2. This sliding friction also increases with increasing contact pressure. This increased sliding friction significantly enhances the effectiveness of the roller brush 15 in cleaning stubborn stains. During rotation, the bristles of the roller brush 15 can penetrate deeper into floor crevices or more effectively contact sticky stains. Furthermore, increasing the output power of the negative pressure source 20 significantly increases the aforementioned air pressure differential, further increasing the pressure exerted by the roller brush 15 on the surface to be cleaned 2 and enhancing its cleaning effect. For example, for dust accumulated in the gaps between tiles or sticky residue on the floor, the increased contact pressure enables the roller brush 15 to effectively overcome the adhesion between the stain and the floor, removing it and entraining it toward the suction port 18. Therefore, the cleaning force of the roller brush 15 can be flexibly controlled by adjusting the power of the negative pressure source 20. For another example, when cleaning soft surfaces such as carpets, the increased contact pressure enables the bristles of the roller brush 15 to penetrate deeper into the carpet's fiber roots, effectively removing deep-seated dust. This reduces the number of repetitive cleaning cycles, improving cleaning efficiency while reducing energy consumption.

[0063] In some embodiments, a filter assembly is further provided in the air intake passage 12. The filter assembly can filter hair, dust, and the like that enter the air intake passage 12 through the first end A, preventing them from entering the negative pressure source 20 and causing wear on the impeller and blockage of the air intake passage 12. The filter assembly is removable and is preferably located at the inlet of the first end A, facilitating regular maintenance and replacement, thereby extending the service life of the entire device.

[0064] like Figure 5 and Figure 6 As shown, in some embodiments, an exhaust port 14 is further provided on the side wall of the floor brush structure 1 , and the exhaust port 14 can discharge the air sucked in from the first end A by the negative pressure source 20 out of the floor brush structure 1 .

[0065] The exhaust port 14 can be configured as a plurality of arrays of exhaust holes, which can disperse the airflow and prevent the unit exhaust port 14 from causing dust to fly.

[0066] According to the floor brush structure 1 of the embodiment of the present application, it includes a stain recognition module, which is arranged at the front end of the floor brush body 10 and in front of the roller brush 15. The detection direction of the stain recognition module is toward the surface to be cleaned 2. The stain recognition module and the negative pressure source 20 are used to be electrically connected to the controller. The controller is configured to adjust the output power of the negative pressure source 20 according to the recognition result of the stain recognition module.

[0067] The stain recognition module is positioned in front of the roller brush 15. It can be located inside the housing at the front end of the floor brush structure 1, directly in front of the axis of the roller brush 15, or outside the housing and above the axis of the roller brush 15. The stain recognition module's detection direction is toward the surface to be cleaned 2, so that the stain recognition module's detection range covers the area that the roller brush 15 will soon contact. The stain recognition module can be an image sensor, which can identify the type, area, and location of the stain. Of course, when the stain recognition module is an image sensor, it is only necessary to store the corresponding material type database in the controller, so that the stain recognition module can identify the material type of the surface to be cleaned 2 or a type similar to a pre-stored type.

[0068] The stain recognition module is installed in front of the roller brush 15. It can obtain the characteristic signal of the stain in advance before the bristles touch the ground, and transmit the detection data to the controller. The algorithm model built into the controller performs real-time analysis of the type and area of ​​the stain, and some can also analyze the location of the stain. It then sends a power adjustment instruction to the negative pressure source 20 to change the output power of the negative pressure source 20 in advance before the roller brush 15 contacts the stain. For example, when stubborn oil stains on kitchen floor tiles are identified, the controller drives the negative pressure source 20 to increase the output power, so that the pressure difference between the upper surface of the floor brush body 10 and the bottom plate 11 below increases, and the roller brush 15 presses against the ground with greater pressure, enhancing the bristles' stripping effect on the stains. If light dust is detected on the living room carpet, the output power of the negative pressure source 20 is reduced, thereby reducing energy consumption while avoiding damage to the fluff.

[0069] According to the floor brush structure 1 of the embodiment of the present application, the stain recognition module can detect the distribution and type of stains on the surface to be cleaned 2 in advance, and the controller adjusts the power of the negative pressure source 20 in real time based on the recognition result of the stain recognition module, so that the pressure difference between the negative pressure space and the external atmospheric pressure can adapt to the characteristics of the stain in real time. When stubborn stains are detected, the controller automatically controls the output power of the negative pressure source 20 to increase to increase the pressure of the roller brush 15 on the ground and strengthen the peeling force; in the face of light stains, the output power of the negative pressure source 20 is automatically controlled to decrease to reduce the pressure of the roller brush 15 on the ground, reducing unnecessary energy consumption and ground damage. This adaptive adjustment of the output power of the negative pressure source 20 can achieve simultaneous optimization of cleaning power and energy efficiency, while improving the stain removal effect and reducing energy consumption, without the need for manual intervention, thereby improving the effect of automated cleaning.

[0070] According to an embodiment of the present application, the floor brush structure 1 includes a pressure sensor. The floor brush structure 1 includes a housing. One of the housing and the roller brush 15 is provided with a rotating shaft, and the other is provided with a rotating groove. The rotating shaft is inserted into the rotating groove and can rotate relative to each other. Taking the rotating shaft provided on the housing as an example, the pressure sensor can be attached to the rotating shaft. This allows real-time detection of the load on the roller brush 15. For example, when the stain recognition module detects that the carpet is being cleaned, the pressure sensor can detect the difference in pressure when cleaning different areas. When the rotating shaft pressure increases due to resistance, it can also indicate the stubbornness of the stain, assisting the stain recognition module in identifying and providing feedback on stubborn stains. The controller controls the output power of the negative pressure source 20 to increase, thereby increasing the pressure difference between the upper surface of the floor brush body 10 and the bottom plate 11 below, enhancing the pressure of the roller brush 15 on the ground and strengthening the stripping force of the bristles on deep-seated hair. In addition, when the rotating shaft pressure increases abnormally due to hair entanglement or foreign matter being stuck, the controller can immediately trigger the anti-entanglement mechanism or shutdown protection after receiving the signal from the pressure sensor to prevent overload of the motor connected to the roller brush 15.

[0071] Furthermore, when there are multiple intake channels 12, an electromagnetic control valve can be set in each intake channel 12, or an electromagnetic control valve can be set in some intake channels 12. By changing the opening of the electromagnetic control valve, the pressure difference between different intake channels 12 and the external atmospheric pressure can be changed.

[0072] For example, when each suction channel 12 corresponds to a negative pressure source 20, the negative pressure source 20 can adjust the overall suction force and adjust its own opening through the electromagnetic control valve to change the airflow flow rate of the suction channel 12, so that the floor brush structure 1 can adapt to the surface to be cleaned 2 of different materials. For example, when cleaning carpets, the opening of the electromagnetic control valve can be adjusted to the maximum to enhance the overall negative pressure between the floor brush structure 1 and the surface to be cleaned 2, allowing the roller brush 15 to press against the deep layer of the fluff with greater pressure, effectively removing dust hidden at the root of the fiber. When dealing with fragile materials such as wooden floors, the opening of the electromagnetic control valve can be reduced to reduce the negative pressure difference between the negative pressure space and the external atmospheric pressure, thereby preventing the bristles from being scratched due to excessive pressure.

[0073] The electromagnetic control valve is provided because although the pressure difference between the negative pressure space and the external atmospheric pressure can be adjusted by adjusting the output power of the negative pressure source 20, the power adjustment of the negative pressure source 20 involves changes in the motor speed, and the response speed is lower than that of the electromagnetic control valve. Therefore, the electromagnetic control valve can be used to assist in adjusting the pressure difference between the negative pressure space and the external atmospheric pressure to cope with emergencies, thereby changing the pressure of the roller brush 15 on the ground and enhancing the cleaning force of the roller brush 15.

[0074] It should be noted that in the above content and the subsequent content, the controller adjusts the output power of the negative pressure source 20 in essence to adjust the negative pressure difference between the suction channel 12 and the external atmospheric pressure. Therefore, if an electromagnetic control valve is also provided in the suction channel 12 in the floor brush structure 1, when the output power of the negative pressure source 20 needs to be adjusted in the control mechanism of the controller, the opening of the electromagnetic control valve can also be adjusted. Both can change the air pressure difference between the upper surface of the floor brush body 10 and the bottom plate 11 below, and have the same technical effect.

[0075] Those skilled in the art should understand that the above two adjustment methods can be used separately or in combination, and both fall within the protection scope of the embodiments of this application. The specific selection of a method or combination does not constitute a limitation on the technical solution of this application. Their essence is to achieve dynamic adaptation of the negative pressure difference and the stain type through the control logic of the controller to meet the suction requirements in different cleaning scenarios.

[0076] like Figure 2 and Figure 4 As shown, according to the floor brush structure 1 of the embodiment of the present application, a wind shielding structure 13 is provided on the bottom plate 11 , and the wind shielding structure 13 is provided around the first end A and extends toward the surface 2 to be cleaned.

[0077] The windshield structure 13 is disposed around the first end A and is annular or rectangular in shape, with the bottom edge of the windshield structure 13 parallel to the ground. The windshield structure 13 may extend perpendicularly toward the surface to be cleaned 2 or extend at an angle. When the windshield structure 13 extends at an angle, it may be configured as a trumpet-shaped structure, with a larger bottom and a smaller top, extending from the surface to be cleaned 2 toward the base plate 11, although this application is not limited thereto.

[0078] The windshield structure 13 can be a rigid structure, for example, integrally formed with the bottom plate 11. The windshield structure 13 can also be a flexible structure, for example, a fixed structure is provided on the upper edge of the windshield structure 13, and a convex edge is provided at the bottom of the bottom plate 11, and the fixed structure is used to assemble with the convex edge.

[0079] Exemplarily, when a single air intake channel 12 is provided on the base plate 11 and is centrally arranged, when the opening of the first end A is circular, the windshield structure 13 can be arranged in a circular surround around the first end A; when the opening of the first end A is rectangular, the windshield structure 13 can adopt a rectangular frame, and the corners of the windshield structure 13 form an arc transition, and the bottom edge of the windshield structure 13 remains flush with the bottom surface of the base plate 11.

[0080] like Figure 2 and Figure 4As shown, when multiple air intake channels 12 are provided on the bottom plate 11, and the first ends A corresponding to the multiple air intake channels 12 are arranged linearly on the bottom plate 11, each air intake channel 12 corresponds to an independent rectangular windshield structure 13, and there is a gap between adjacent windshield structures 13. For example, the number of air intake channels 12 is two, and the two windshield structures 13 are arranged along Figure 1 The left and right directions shown in are arranged sequentially.

[0081] The bottom edge of the windshield structure 13 forms a gap with the surface to be cleaned 2, forming a stable space around the first end A. This gap can guide air to flow evenly into the semi-enclosed space enclosed by the windshield structure 13. The windshield structure 13 converges the airflow, forcing the air to flow rapidly within the semi-enclosed space, thereby cooperating with the suction of the negative pressure source 20 to strengthen the negative pressure, increase the negative pressure intensity, and thus improve the overall cleaning effect of the floor brush structure 1.

[0082] Specifically, when negative pressure source 20 is activated, the gap between the bottom edge of windshield structure 13 and surface 2 to be cleaned guides air evenly into the semi-enclosed space, ensuring stable airflow. Windshield structure 13 converges airflow, forcing it to flow rapidly, increasing the negative pressure around first end A. This in turn increases the contact pressure between roller brush 15 and the ground, thereby enhancing the sliding friction between roller brush 15 and the dirt, and strengthening the removal effect.

[0083] The area enclosed by the windshield structure 13 is directly related to the coverage of the negative pressure space. A larger enclosed area allows more airflow to be sucked into the negative pressure source 20, thereby increasing the upper limit of the air pressure difference between the upper surface of the floor brush body 10 and the bottom plate 11 below, ensuring that during the cleaning process, no matter whether it is a large area of ​​stains or local stubborn stains, the peeling force of the roller brush 15 on the stains can achieve efficient removal of the stains.

[0084] like Figure 3 As shown, according to the floor brush structure 1 of the embodiment of the present application, the cross-sectional area of ​​the air suction channel 12 gradually decreases as it approaches the negative pressure source 20.

[0085] The cross-sectional area of ​​the air inlet channel 12 may be linearly or nonlinearly reduced as it approaches the negative pressure source 20 . The inner wall of the air inlet channel 12 may be extended upward at a fixed inclination angle or in a curved shape such as a parabola or an arc. This application is not limited thereto.

[0086] When multiple air intake channels 12 correspond to the same negative pressure source 20, the second ends of the air intake channels 12 may converge into a manifold, which is then connected to the inlet of the negative pressure source 20. Of course, guide vanes may be provided at the inlet of the manifold to guide the airflow in the air intake channels 12 to converge evenly into the manifold, thereby avoiding mutual interference and turbulence.

[0087] The cross-sectional area of ​​the air intake channel 12 gradually decreases as it approaches the negative pressure source 20. When the negative pressure source 20 is activated, the air between the base plate 11 and the surface to be cleaned 2 enters the air intake channel 12 from the first end A and flows toward the negative pressure source 20 at the second end. As the cross-sectional area of ​​the air intake channel 12 gradually narrows with the flow direction, the air is constrained by the inner wall of the air intake channel 12 during flow and is forced to accelerate. As the air approaches the negative pressure source 20, the flow rate gradually increases, significantly increasing the negative pressure between the base plate 11 and the surface to be cleaned 2. This further increases the pressure difference between the upper surface of the floor brush body 10 and the base plate 11 below, thereby increasing the contact pressure between the roller brush 15 and the floor, and strengthening the bristles' ability to remove stubborn stains.

[0088] According to the floor brush structure 1 of the embodiment of the present application, the negative pressure source 20 is arranged in the floor brush body 10; the negative pressure source 20 is configured as a fan, and the air inlet of the fan is connected to the second end of the suction channel 12.

[0089] When the fan is started, the impeller rotates at high speed to produce a suction effect. The air at the second end of the suction channel 12 is quickly drawn out by the fan and discharged from the air outlet, causing the air pressure in the suction channel 12 to be lower than the air pressure between the bottom plate 11 and the surface to be cleaned 2. Under the action of the air pressure difference, the air below the bottom plate 11 continues to flow into the suction channel 12 through the first end A to replenish the extracted air, and then is discharged through the fan, so that the air between the bottom plate 11 and the surface to be cleaned 2 forms a stable negative pressure environment due to the continuous extraction of air, and the negative pressure intensity below the bottom plate 11 changes with the power of the negative pressure source 20, which can match the pressure requirements in different cleaning scenarios.

[0090] The fan is arranged in the floor brush structure 1, shortening the path length between the second end of the air intake channel 12 and the fan inlet, reducing the resistance loss of the air flow during transmission, making the fan's suction efficiency higher, making the air flow through the air intake channel 12 larger per unit time, and shortening the response time from startup to forming a stable negative pressure. When the floor brush structure 1 suddenly encounters stains during movement, the negative pressure intensity can be quickly increased. At the same time, the fan inlet is directly connected to the second end of the air intake channel 12, ensuring the stability and uniformity of the airflow in the air intake channel 12, making the pressure distribution of the negative pressure space under the bottom plate 11 more balanced, and the pressure deviation between the roller brush 15 and the surface to be cleaned 2 at various axial locations is smaller. Each location can be pressed against the ground with a relatively consistent pressure. Whether it is the center area or the edge position of the roller brush 15, the same cleaning effect can be achieved, reducing cleaning blind spots.

[0091] In the above embodiment, the fan is a centrifugal fan, and its spiral volute design can evenly converge the airflow at the second end of the air intake channel 12. Compared with the axial flow fan, the negative pressure in the air intake channel 12 is greater at the same power, that is, the air pressure difference between the bottom plate 11 and the surface to be cleaned 2 is greater, and the downward pressure obtained by the roller brush 15 toward the surface to be cleaned 2 is more significant. The force of the bristles to peel off the dust deep in the gaps between the tiles or the sticky stains on the floor is further enhanced due to the increase in contact pressure.

[0092] like Figure 7 and Figure 8 As shown, in some embodiments, the rear end of the floor brush body 10 is provided with an air jet 17 , the air jet 17 is connected to the air outlet of the fan, and the air jet 17 faces the surface 2 to be cleaned.

[0093] The rear end of the floor brush body 10 is located behind the sewage suction port 18 and near the connection position between the floor brush body and the main body of the cleaning device. It can be located on the rear end surface of the housing of the floor brush body 10, or located in the rear area of ​​the side of the housing of the floor brush body 10, or located in the rear area of ​​the bottom plate 11. Of course, it can also be located in the rear area of ​​the top surface of the housing of the floor brush body 10. Among them, the rear end surface of the housing is relative to the front end surface of the housing, and refers to the rear end surface along the length direction of the floor brush body 10.

[0094] That is to say, in the length direction of the floor brush body 10, the roller brush 15, the sewage suction port 18 and the air jet 17 are arranged in sequence. In the floor brush structure 1 partially provided with the wind shield structure 13, in the length direction of the floor brush body 10, the roller brush 15, the sewage suction port 18, the wind shield structure and the air jet 17 are arranged in sequence, as shown in FIG. Figure 6 As shown, the roller brush is located at the front side, the suction port 18 and the wind shield structure 13 are located between the roller brush 15 and the air jet 17, and the air jet 17 is located at the rear side. In this way, the roller brush 15 cleans along the direction of travel of the floor brush structure 1, removes stubborn stains, and the stains are sucked into the suction channel 19 through the suction port 18.

[0095] The air jets 17 can be configured as circular, elliptical, square or rectangular, and are usually configured as a plurality of air jets 17 distributed in an array, which can increase the air flow velocity at the air jets 17 and enhance the drying effect.

[0096] For example, Figure 7 As shown, the air jet 17 can be set on the bottom plate 11, with the spray direction toward the surface to be cleaned 2, and multiple air jets 17 are evenly distributed along the width direction of the floor brush body 10. The air jet 17 can be set as a small circular hole to ensure that the airflow can cover a larger range and avoid water stains in local areas of the surface to be cleaned 2 that are not covered by the airflow.

[0097] For example, Figure 8As shown, the rear end of the shell of the floor brush body 10 extends a section of air duct toward the surface 2 to be cleaned, and an air jet 17 is provided in the air duct, and the jet direction of the air jet 17 is inclined toward the rear, which can expand the effective area.

[0098] When the fan is operating, the fan's inlet creates a negative pressure space beneath the base plate 11, while the high-speed airflow from the fan's outlet is transported through the guide channel to the air jet 17, forming a jet airflow directed toward the surface to be cleaned 2. This airflow impacts the ground at a certain angle, directly acting on the area just cleaned by the roller brush 15. Due to the friction between the roller brush 15 and the ground, there may be a thin layer of water stains in this area. The airflow quickly dries these water stains, reducing the duration of wetness and residual water stains on the ground. This ensures that the cleaned ground is not only free of visible stains but also quickly returns to dryness. This is particularly effective in applications where water is likely to accumulate in areas such as kitchens and bathrooms. Furthermore, the dried ground reduces resistance during subsequent cleaning, for example, preventing hair from sticking to the ground due to moisture, thereby improving overall cleaning efficiency.

[0099] In some embodiments, a heating component is further provided in the first air duct connecting the air outlet of the fan and the air outlet 17 .

[0100] When the fan is running, it drives air through the fan outlet and into the first air duct. The heating component heats the airflow in the first air duct, raising the temperature of the airflow flowing out of the first air duct to above the ambient temperature. The heated airflow is then directed from the air jet 17 toward the surface to be cleaned 2, accelerating the drying of water stains on the surface to be cleaned 2. Furthermore, for porous materials like carpet, the hot air can penetrate deep into the fibers, heating and vaporizing the moisture hidden at the base of the hairs, preventing mold growth and odor caused by moisture, and resolving the problem of slippery or scratched floors caused by traditional cleaning equipment.

[0101] In the above embodiment, the heating component can be an electric heating wire or a PTC heating element, etc. The heating component can also be electrically connected to the controller, and the power of the heating component can be adjusted by the controller. The power adjustment control logic of the heating component can also be combined with the stain recognition module. For example, when the stain recognition module can identify the background of the stain, that is, the type of the surface to be cleaned 2 while identifying the stain, it can adaptively adjust the power of the heating component according to the movement of the floor brush structure 1 to different materials of the surface to be cleaned 2.

[0102] For example, when it is detected that the floor tiles are wet and there is no carpet, the controller drives the heating component to operate at high power, quickly raising the hot air temperature of the jet nozzle 17 to an appropriate range to accelerate the evaporation of water stains. If it is detected on the carpet, the heating power is reduced to maintain the hot air temperature within a safe range to protect the fibers and avoid deformation of the fluff due to high temperature.

[0103] It is understood that when the power of the heating component is controlled by the above control logic, the user does not need to manually set the heating gear, which significantly improves the convenience of operation and cleaning safety. Of course, a control panel can also be provided on the main body of the cleaning device, the control panel being electrically connected to the controller, and the control panel being used to receive user input instructions to achieve the ability to change the heating power of the heating component according to the user's own settings.

[0104] According to the floor brush structure 1 of the embodiment of the present application, the floor brush structure 1 is used to be connected to the main body of the cleaning device, and the negative pressure source 20 is the main fan in the main body of the cleaning device.

[0105] When the main fan is started, the dirt removed by the roller brush 15 is sucked in by the suction effect generated by the dirt suction channel 19 and transported to the dust collecting device, ensuring that the dirt rolled up by the roller brush 15 is collected in time.

[0106] In this embodiment, the main fan is connected to the sewage suction channel 19 and the air intake channel 12 through pipelines, and on the basis of maintaining the original suction force of the sewage suction channel 19, it simultaneously provides suction power for the air intake channel 12. When the main fan is started, the strong suction force generated by the high-speed rotation of the impeller of the main fan acts on the sewage suction channel 19 to collect stains, and the other part is used to suck the air under the bottom plate 11 of the floor brush structure 1 through the air intake channel 12, so that a negative pressure space lower than the external atmospheric pressure is formed between the bottom plate 11 and the surface to be cleaned 2. As the core power source of the cleaning equipment, the main fan usually has higher power and stronger suction capacity. Compared with the small fan built into the floor brush structure 1, it can generate a higher intensity of negative pressure in the bottom area of ​​the floor brush structure 1, so that the roller brush 15 obtains a greater pressure on the ground, significantly improving the bristles' ability to peel off stubborn stains. At the same time, there is no need to set up an additional fan inside the floor brush structure 1, which can greatly reduce the weight of the floor brush structure 1, making the operation lighter and more flexible, especially suitable for long-term cleaning or frequent lifting scenarios, such as cleaning the bottom of the sofa.

[0107] In some embodiments, an electric control valve is provided in the air intake channel 12 , and the electric control valve changes its opening in response to an electric control signal sent by the cleaning device body to change the air flow rate of the air intake channel 12 .

[0108] The electric control valve provided in the air intake passage 12 changes its opening by receiving an electric control signal from the cleaning device body, thereby adjusting the effective flow area in the air intake passage 12. When the controller of the cleaning device body generates an electric signal to increase the opening of the electric control valve based on the detection data of the stain recognition module or a user instruction, the electric control valve opening increases, the air flow in the air intake passage 12 increases, and the air flow driven by the main fan flows more smoothly through the air intake passage 12, thereby increasing the pressure difference in the negative pressure space between the bottom plate 11 and the surface to be cleaned 2. The roller brush 15 obtains a greater downward force toward the surface to be cleaned 2, and the bristles can penetrate deeper into the cracks in the ground to remove stains.

[0109] When the controller of the cleaning device body generates an electrical signal to reduce the opening of the electric control valve based on the detection data of the stain recognition module or the user's instruction, the opening of the electric control valve is reduced, the air flow rate is reduced, and the pressure difference in the negative pressure space is reduced, thereby avoiding excessive pressure of the roller brush 15 on the ground.

[0110] It's understandable that the opening of the electric control valve is linearly proportional to the airflow within the suction channel 12, allowing the controller to adjust the intensity of the negative pressure. Of course, the most important thing is that the suction channel 19, which is connected to the suction port 18, shares a main blower with the suction channel 12. When the main blower is activated, the suction generated by the rotation of the main blower's impeller acts simultaneously on both the suction channel 12 and the suction channel 19. The suction channel 12 controls the amount of air drawn from beneath the base plate 11 by adjusting the opening of the electric control valve, creating a negative pressure space that increases the pressure of the roller brush 15 on the ground. The suction channel 19, in turn, relies on the suction force of the main blower to draw dirt lifted by the roller brush 15 into the suction channel 19. When the controller adjusts the opening of the electric control valve according to the type of stains, the total air intake of the main fan will be redistributed between the air intake channel 12 and the sewage suction channel 19. The increase in the air flow in the air intake channel 12 will cause the air flow in the sewage suction channel 19 to decrease accordingly, but the power of the main fan can be adjusted synchronously to ensure that the suction force of the sewage suction channel 19 is sufficient to suck in the stains.

[0111] In addition, when the stain recognition module can also distinguish different materials and adjust the opening of the electric control valve according to the type of stain, under ideal conditions, for the same stubborn stains, the air flow rate of the air intake channel 12 can be different on different materials of the surface to be cleaned 2. For example, for harder floors, the controller will prioritize the cleaning effect and increase the opening of the electric control valve to increase the air flow rate of the air intake channel 12, so that a higher negative pressure is formed under the bottom plate 11. The roller brush 15 is pressed against the ground with greater pressure, and the bristles penetrate deep into the gaps to peel off the stains. At the same time, the power of the main fan is synchronously increased to compensate for the suction force required by the suction channel 19, ensuring that the peeled stains are sucked in in time. When the same stubborn stains appear on the surface of fragile materials such as wooden floors, the controller will appropriately reduce the opening of the electric control valve (compared to the hard floor scenario), and reduce the pressure of the roller brush 15 on the ground while ensuring that the bristles can overcome the adhesion of the stains, so as to avoid the floor brush structure 1 scratching the wooden surface due to excessive negative pressure.

[0112] When there is no need to increase the ground pressure of the roller brush 15, the electric control valve can be controlled to close the air intake channel 12, so that the air intake of the main fan is completely directed to the sewage suction channel 19, thereby reducing the power of the main fan and saving energy consumption.

[0113] Of course, multiple gears can also be set in the controller, and the user can select the corresponding gear by operating the control panel. Each gear corresponds to a specific opening range of the electric control valve of the suction channel 12 and the main fan power parameters.

[0114] For example, when the user selects "Strong Clean" via the control panel, the controller fully opens the electric control valve, maximizing airflow through the air intake duct 12 and creating maximum negative pressure beneath the baseplate 11. The roller brush 15 presses against the floor with maximum pressure, making it suitable for treating stubborn stains such as those in tile crevices and heavy kitchen grease. When the user selects "Mild Clean," the electric control valve opening is reduced compared to the "Strong Clean" setting, for example, to 30%-50%. This reduces the pressure differential in the negative pressure space beneath the baseplate 11 and maintains moderate pressure on the roller brush 15, making it suitable for routine dust removal on delicate materials such as wood floors and marble. Selecting "Eco-Friendly Clean" partially closes the air intake duct 12 or minimizes the valve opening, operating the main fan at low power, making it suitable for light dust removal. Of course, while users can select the gear, they can also fine-tune the setting based on the data from the stain recognition module, allowing for tailored cleaning to meet varying user needs.

[0115] like Figure 2 、 Figure 4 and Figure 6 As shown, in some embodiments, the floor brush body 10 is provided with a power piece and an auxiliary wheel 16 , the power piece is transmission-connected to the auxiliary wheel 16 , and the controller adjusts the output torque size and / or direction of the power piece according to the output power of the negative pressure source 20 .

[0116] When the negative pressure source 20 is not started, there is no negative pressure adsorption force between the base plate 11 and the ground, and the floor brush structure moves forward under the action of the roller brush 15. The controller drives the auxiliary wheel 16 to rotate in the opposite direction of the forward direction of the floor brush structure 1 by default, and achieves the braking effect through the reverse friction resistance, slowing down the movement speed of the floor brush structure 1, ensuring that the user can accurately control the cleaning path when pushing, especially when dealing with narrow areas or edge stains, the low-speed movement of the floor brush structure 1 can make the moving range of the roller brush 15 fully cover the surface to be cleaned 2, ensuring the contact time between the roller brush 15 and the surface to be cleaned 2, and avoiding cleaning blind spots due to excessive speed.

[0117] After the negative pressure source 20 is activated, the negative pressure formed in the negative pressure space below the bottom plate 11 increases the friction between the floor brush structure 1 and the surface to be cleaned 2. The controller detects the working signal of the negative pressure source 20 in real time. When the operating power of the negative pressure source 20 is low and there is no need to change the rotation direction of the auxiliary wheel 16, the output power of the power component is controlled to decrease until it is determined that the auxiliary wheel 16 needs to change its direction. The power component is controlled to change its direction and, as needed, the output power of the power component is increased when the output power of the negative pressure source 20 increases, and the output power of the power component is reduced when the output power of the negative pressure source 20 decreases. In this way, the floor brush structure 1 can be maintained at an appropriate forward movement speed, which not only prevents the floor brush structure 1 from slipping in place due to excessive negative pressure, but also prevents the cleaning path from being deviated due to excessive driving force, ensures the contact time between the roller brush 15 and the surface to be cleaned 2, avoids stains from being missed or incomplete cleaning, and ensures the stability and efficiency of the cleaning process.

[0118] In the above embodiment, the power member may be a brushless DC motor or a stepper motor, etc., and the output shaft of the power member may be directly connected to the main shaft of the auxiliary wheel 16 via a coupling, or the output shaft of the power member may be connected to a reducer, and the output end of the reducer may be directly connected to the main shaft of the auxiliary wheel 16 via a coupling.

[0119] like Figure 6 As shown, the auxiliary wheel 16 can be a cylindrical wheel body with anti-slip grooves on the surface. Two auxiliary wheels 16 can be provided, and the two auxiliary wheels 16 can be symmetrically arranged at the rear end of the floor brush structure 1, so as to achieve balance with the traveling wheel arranged at the front end of the floor brush structure 1. When the bottom plate 11 of the floor brush body 10 is parallel to the surface to be cleaned 2, the lowest point of the auxiliary wheel 16 is spaced from the ground. Based on the design of the auxiliary wheel 16, when the bottom plate 11 of the floor brush body 10 is roughly parallel to the surface to be cleaned 2, the lower end surface of the windshield structure 13 also presents a trend of gradually tilting upward from front to back. After the auxiliary wheel 16 contacts the ground, it supports the rear end of the floor brush structure 1, so that when the bottom plate 11 is tilted, the lower end surface of the windshield structure 13 is parallel to the ground and maintains a uniform interval, so that the airflow velocity at each location between the windshield structure 13 and the surface to be cleaned 2 is consistent, avoiding turbulent loss caused by changes in spacing.

[0120] The cleaning device according to the embodiment of the present application includes a cleaning device body and the above-mentioned floor brush structure 1 connected to the cleaning device body.

[0121] According to the cleaning equipment of the embodiment of the present application, the existence of the negative pressure space makes the contact between the floor brush and the ground closer. Combined with the rotating friction of the roller brush 15, the roller brush 15 adheres to the ground with greater pressure under the action of negative pressure, thereby enhancing the ability of the bristles to remove stubborn stains such as dirt accumulated in the gaps of floor tiles and dust mites deep in the carpet, so that the cleaning process that originally required multiple reciprocating strokes can be completed in a single time, so that the floor brush structure 1 can be efficiently cleaned when facing different cleaning scenarios, especially various stubborn stains that are difficult to clean.

[0122] like Figure 10 As shown, according to the control method of an embodiment of the present application, it is used to control the above-mentioned floor brush structure 1, which also includes a stain recognition module. The control method includes:

[0123] Step S10: obtaining a stain image of the surface to be cleaned 2;

[0124] Step S20: generating an identification result including at least one stain feature parameter according to the stain image;

[0125] Step S30: adjusting the output power of the negative pressure source 20 according to the stain characteristic parameters in the identification result.

[0126] In step S10, the stain recognition module can utilize an optical image sensor, such as a CMOS or CCD camera, and associated optical components to capture images of stains on the surface to be cleaned 2. As the cleaning device or floor brush structure 1 moves, the stain recognition module captures images of the floor ahead at a preset frequency. The stain recognition module can also include a fill light component, which automatically activates when ambient light is insufficient. This component uses reflective lighting to evenly illuminate the surface to be cleaned 2, preventing image distortion caused by shadows and improving the detection accuracy of the stain recognition module.

[0127] In step S20, the stain recognition module transmits the acquired stain image to the controller, which analyzes the stain image through the built-in image processing algorithm and the stain feature database to generate an identification result including at least one characteristic parameter such as stain type, stubbornness, and coverage area.

[0128] Among them, the type of stain can include solid, liquid or mixed. The stubbornness of the stain can be mild, moderate or severe. Through algorithm design, it is possible to accurately distinguish the difference between sticky stains such as ketchup and powdery stains such as flour, and even identify the dry and wet states of the same stain, such as the cracked texture of dried coffee stains and the moist reflectiveness of fresh coffee stains. This provides a basis for subsequent power adjustment of the negative pressure source 20, allowing the cleaning device or floor brush structure 1 to adapt different cleaning forces to different stain characteristics, avoiding over-cleaning or under-cleaning.

[0129] In step S30, the controller adjusts the output power of the negative pressure source 20 based on the stain characteristic parameters in the identification result and a preset control strategy to adjust the output power of the negative pressure source 20 to match the state of the stain. For example, the output power of the negative pressure source 20 increases as the stain's stubbornness is ranked from mild to moderate to severe.

[0130] Different control strategies can be used for different stain conditions. The following examples are provided as reference control strategies only.

[0131] For heavy and stubborn stains, a graded cleaning strategy can also be implemented. For example, in the initial cleaning phase, the negative pressure source 20 is controlled to operate at a higher power to allow the roller brush 15 to initially soften the stain. In the middle phase, the power of the negative pressure source 20 is further increased, allowing the roller brush 15 to remove the stain with greater force. Once the characteristic parameters of the stain fall below the heavy threshold, the negative pressure source 20 is adjusted to operate at a lower power.

[0132] When multiple different types of stains are superimposed, the controller first adjusts the output power of the negative pressure source 20 to preferentially match the liquid stains. After processing the liquid layer, the output power of the negative pressure source 20 is adjusted and increased, thereby increasing the friction between the roller brush 15 and the surface to be cleaned 2.

[0133] Of course, in the above embodiments, when selecting different control strategies, in addition to considering the stain characteristic parameters, the output power of the negative pressure source 20 can also be adjusted in combination with the floor material. For example, a pressure sensor is provided in the cleaning device or the floor brush structure 1. For example, if a rotating shaft is provided on the housing, the pressure sensor can be attached to the rotating shaft.

[0134] When the brush travels over a hard surface, such as ceramic tile, the pressure sensor detects a small fluctuation in contact pressure with a stable frequency, leading the controller to determine the material type as hard. If the brush travels over carpet, the pressure sensor detects periodic fluctuations and an increase in average pressure, leading the controller to determine the material type as carpet. Given the same level of soiling, the controller can control the negative pressure source 20 to output a higher power when cleaning carpets than when cleaning hard floors.

[0135] like Figure 11 As shown, in some embodiments, the floor brush structure 1 further includes a power member and an auxiliary wheel 16 transmission-connected to the power member, and the control method further includes:

[0136] Step S40: obtaining current cleaning mode parameters, the cleaning mode parameters including the output power of the negative pressure source 20;

[0137] Step S50: adjusting the output torque and / or direction of the power component according to the cleaning mode parameters.

[0138] In step S40, the controller obtains the current cleaning mode parameters, which include the output power of the negative pressure source 20. The cleaning mode parameters can include the preset power value of the negative pressure source 20 corresponding to the mode manually selected by the user, such as automatic mode, strong mode, energy-saving mode, etc., and can also include the real-time power value of the negative pressure source 20 generated based on the stain recognition result.

[0139] The cleaning mode parameters may also include the travel speed of the floor brush structure 1. Alternatively, when stubborn stains are identified, the controller may control the floor brush structure 1 to move back and forth several times in the stained area according to a preset cleaning mode. In this case, the cleaning mode parameters may also include the setting of the cleaning path.

[0140] In step S50, the controller adjusts the magnitude of the output torque of the power component, or adjusts the direction of the output torque of the power component, or adjusts both the magnitude and direction of the output torque of the power component according to the cleaning mode parameters. The controller defaults to driving the auxiliary wheel 16 to rotate in the direction opposite to the forward direction of the floor brush structure 1, achieving a braking effect through reverse friction resistance, thereby slowing the movement of the floor brush structure 1.

[0141] When the floor brush structure 1 or the cleaning equipment needs to clean heavy stains with strong force, the negative pressure source 20 is in high power output, so that the roller brush 15 fits tightly against the stains, enhancing the peeling force, and the power part changes the direction of the output torque. At the same time, it can cooperate with the increase in output torque to offset the travel resistance caused by the strong negative pressure suction, ensuring that the floor brush structure 1 will not get stuck when moving on the ground.

[0142] If the floor brush structure 1 or cleaning device needs to clean light stains, the negative pressure source 20 is in energy-saving mode and operates at low power output, and the power component reduces its torque output. In automatic cleaning mode, the output torque of the power component changes in real time with the power of the negative pressure source 20. That is, when the output power of the negative pressure source 20 increases, the output torque of the power component increases synchronously, and when the output power of the negative pressure source 20 decreases, the output torque of the power component decreases accordingly, and the two remain matched.

[0143] When the floor brush structure 1 or the cleaning device needs to cross floors of different materials, if necessary, the controller can adjust the magnitude or direction of the output torque of the power component in advance according to the power change trend of the negative pressure source 20, so that the driving force of the auxiliary wheel 16 can transition smoothly, preventing cleaning interruptions or equipment jams due to sudden changes in material resistance, and ensuring that the floor brush structure 1 or the cleaning device can operate stably and efficiently in various cleaning modes. For example, when the cleaning device moves from a surface with lower resistance to a floor with higher resistance, the direction of the auxiliary wheel's travel resistance may change significantly. At this time, the controller needs to control the power component to adjust the direction of the output torque to ensure that the floor brush structure 1 can smoothly cross floors of different materials.

[0144] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an", etc. as used in the text may also be represented to include plural forms. The terms "comprise", "include", "contain", and "have" are inclusive and therefore specify the existence of the stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps can be used.

[0145] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0146] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A floor brush structure, characterized in that: include: A floor brush body, the floor brush body comprising a bottom plate, at least one suction channel being provided on the bottom plate, the suction channel comprising a first end and a second end, the first end of the suction channel being located on the bottom plate and arranged toward the surface to be cleaned, the second end of the suction channel being connected to a negative pressure source; A roller brush, the roller brush being arranged at the bottom of the floor brush body and forming a sewage suction port between the roller brush and the bottom plate; In which, in response to the activation of the negative pressure source, the suction channel sucks the gas between the bottom plate and the surface to be cleaned from the first end of the suction channel and discharges it to the second end of the suction channel, so as to form a negative pressure space between the bottom plate and the surface to be cleaned.

2. The floor brush structure according to claim 1, characterized in that: The bottom plate is provided with a wind shield structure, which is arranged around the first end of the air suction channel and extends toward the surface to be cleaned.

3. The floor brush structure according to claim 1, characterized in that: The negative pressure source is arranged in the floor brush body; The negative pressure source is configured as a fan, and the air inlet of the fan is connected to the second end of the air suction channel.

4. The floor brush structure according to claim 3, characterized in that: The rear end of the floor brush body is provided with an air jet port, the air jet port is communicated with the air outlet of the fan, and the air jet port faces the surface to be cleaned.

5. The floor brush structure according to claim 4, characterized in that: A heating component is also provided in the first air duct communicating with the air outlet of the fan and the air jet port.

6. The floor brush structure according to claim 1, characterized in that: The floor brush structure is used to be connected to a cleaning device body, and the negative pressure source is a main fan in the cleaning device body.

7. The floor brush structure according to claim 6, characterized in that: An electric control valve is provided in the air intake passage. The electric control valve changes its opening in response to an electric control signal sent by the cleaning device body, so as to change the air flow rate of the air intake passage.

8. The floor brush structure according to claim 3, characterized in that: include: A stain recognition module is provided at the front end of the floor brush body and in front of the roller brush. The detection direction of the stain recognition module is toward the surface to be cleaned. The stain recognition module and the negative pressure source are used to be electrically connected to the controller. The controller is configured to adjust the output power of the negative pressure source according to the recognition result of the stain recognition module.

9. The floor brush structure according to claim 8, characterized in that: The floor brush body is provided with a power piece and an auxiliary wheel, the power piece is in transmission connection with the auxiliary wheel, and the controller adjusts the output torque size and / or direction of the power piece according to the output power of the negative pressure source.

10. A cleaning device, characterized in that: The utility model comprises a cleaning device body and a floor brush structure according to any one of claims 1 to 9 connected to the cleaning device body.

11. A control method for controlling the floor brush structure according to any one of claims 1 to 9, or for controlling the cleaning device according to claim 10, characterized in that: The floor brush structure further includes a stain recognition module, and the control method includes: Acquiring a stain image of the surface to be cleaned; generating an identification result including at least one stain feature parameter according to the stain image; The output power of the negative pressure source is adjusted according to the stain characteristic parameters in the identification result.

12. The control method according to claim 11, characterized in that: The floor brush structure further includes a power member and an auxiliary wheel transmission-connected to the power member, and the control method further includes: Acquiring current cleaning mode parameters, wherein the cleaning mode parameters include the output power of the negative pressure source; The output torque magnitude and / or direction of the power component is adjusted according to the cleaning mode parameters.

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