Cleaning device with air duct and scrubber with same

Abstract

This invention provides a cleaning device with air ducts and a floor scrubber having the same. The cleaning device includes a base and a suction assembly. The base is equipped with at least one front roller brush and at least one rear roller brush. The suction assembly includes at least one front air duct, at least one rear air duct, and a converging air duct. The front air duct corresponds to the front roller brush, and the rear air duct corresponds to the rear roller brush. The front and rear air ducts are connected to the converging air duct. The distance the cleaning airflow travels from the front suction port through the front air duct to the converging air duct is shorter than the distance the cleaning airflow travels from the rear suction port through the rear air duct to the converging air duct. The front roller brush is the primary cleaning roller brush, and the rear roller brush is the secondary cleaning roller brush. The front air duct absorbs more material than the rear air duct. This invention enhances the suction power of the front air duct and improves the cleaning device's suction capacity by making the distance the airflow travels in the front air duct shorter than the distance it travels in the rear air duct.

Description

Technical Field

[0001] This invention relates to the field of cleaning device technology, and more specifically to a cleaning device with an air duct and a floor scrubber having therein. Background Technology

[0002] In recent years, various smart home appliances have gradually entered people's daily lives. For example, smart cleaning devices such as robotic vacuum cleaners and floor scrubbers can assist users with housework, reduce their burden, and bring convenience to their lives. With the development of cleaning device technology, these devices have become widely available. As more and more people use them, they are placing higher demands on them.

[0003] Existing cleaning devices often leave water stains on the ground after cleaning, affecting the cleanliness and posing safety hazards such as slipping. Secondly, while suctioning out dirty liquids, these devices also remove dust, hair, and other fine particles. However, existing cleaning devices are ineffective at removing these particles and are prone to clogging the suction pipes, thus affecting the lifespan of the device. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a cleaning device with an air duct and a floor scrubber having therein.

[0005] The specific technical solution is as follows:

[0006] A cleaning device with an air duct, including a base and a suction assembly;

[0007] The base is provided with at least one front roller brush and at least one rear roller brush, the front roller brush and the rear roller brush are rotatably mounted on the base and abut against the surface to be cleaned, and the base is also provided with at least one front suction port and at least one rear suction port.

[0008] The suction assembly includes at least one front air duct, at least one rear air duct, and a converging air duct. The front suction port is correspondingly arranged with the front roller brush. Both ends of the front air duct are connected to the front suction port and the converging air duct, respectively, to suction the material cleaned by the front roller brush. The rear suction port is correspondingly arranged with the rear roller brush. Both ends of the rear air duct are connected to the rear suction port and the converging air duct, respectively, to suction the material cleaned by the rear roller brush. The distance traveled by the airflow from the front suction port through the front air duct to the converging air duct is shorter than the distance traveled by the airflow from the rear suction port through the rear air duct to the converging air duct.

[0009] In one specific embodiment, the suction assembly further includes a fan and a recovery container. The fan is used to generate negative pressure at the front suction port to draw in the dirty liquid generated by the front roller brush and recover it to the recovery container via the front air duct and the converging air duct. The fan is also used to generate negative pressure at the rear suction port to draw in the dirty liquid generated by the rear roller brush and recover it to the recovery container via the rear air duct and the converging air duct.

[0010] In one specific embodiment, the front air duct includes a first air duct and a second air duct. The first air duct of the front air duct corresponds to the front suction port, and the second air duct of the front air duct corresponds to the converging air duct. The second air duct of the front air duct is narrower than the first air duct of the front air duct. The inner wall of the second air duct of the front air duct facing the front roller brush is a first sidewall, and the first sidewall is an arc-shaped concave surface.

[0011] The rear air duct also includes a first air duct and a second air duct. The first air duct of the rear air duct corresponds to the rear suction port, and the second air duct of the rear air duct corresponds to the converging air duct. The second air duct of the rear air duct is narrower than the first air duct of the rear air duct. The inner wall of the second air duct of the rear air duct facing the rear roller brush is a second side wall, and the second side wall is an arc-shaped concave surface.

[0012] In one specific embodiment, a cover plate is provided on the base, and the first side wall and the second side wall are disposed on the cover plate. The first side wall and the second side wall are integral structures, and the first side wall and the second side wall are detachably connected to the base.

[0013] In one specific embodiment, the inner wall of the converging air duct is provided with a multi-ringed transverse groove, which forms a spiral inner wall of the converging air duct.

[0014] In one specific embodiment, the first air duct of the front air duct and the first air duct of the rear air duct are arranged laterally along the plane where the clean surface is located, and the converging air duct is arranged vertically along the plane where the clean surface is located.

[0015] In one specific embodiment, the air duct assembly is located between the front roller brush and the rear roller brush, and the dirty liquid conveying directions of the front air duct and the rear air duct are arranged opposite to each other.

[0016] In one specific embodiment, the cross-section of the front suction port is larger than the cross-section of the rear suction port.

[0017] In one specific embodiment, a first receiving groove is provided at the bottom of the second air duct of the front air duct for recovering the residual material in the second air duct of the front air duct;

[0018] And / or, the second air duct of the rear air duct is provided with a second receiving tank for recovering the substances remaining in the second air duct of the rear air duct.

[0019] In one specific embodiment, a third receiving groove is provided at the connection between the first sidewall and the second sidewall for recovering the residual material in the gathering air duct.

[0020] In one specific embodiment, the base is provided with two front roller brushes, the base is provided with two rear roller brushes, the front suction port corresponds to the two front roller brushes, and the rear suction port corresponds to the two rear roller brushes;

[0021] Alternatively, the base may be provided with two front roller brushes and one rear roller brush, with the front suction port corresponding to the two front roller brushes and the rear suction port corresponding to the rear roller brush;

[0022] Alternatively, the base may be provided with one front roller brush and two rear roller brushes, with the front suction port corresponding to the front roller brush and the rear suction port corresponding to the two rear roller brushes.

[0023] In one specific embodiment, a first cyclone device for generating cyclones is provided in the second duct of the front air duct; preferably, the first cyclone device includes a first blade, which is disposed on the inner wall of the second duct of the front air duct; preferably, the first cyclone device includes a first protrusion with an inclined surface, which is disposed on the windward surface of the second duct of the front air duct.

[0024] And / or, a second cyclone device for generating cyclones is provided in the second duct of the rear air duct; preferably, the second cyclone device includes a second blade, which is disposed on the inner wall of the second duct of the rear air duct; preferably, the second cyclone device includes a second protrusion with an inclined surface, which is disposed on the windward surface of the second duct of the rear air duct.

[0025] In one specific embodiment, the second air duct of the front air duct and / or the second air duct of the rear air duct are provided with a cyclone device for generating cyclones.

[0026] In one specific embodiment, the cyclone device has a spiral-shaped air guide slope.

[0027] A floor scrubber includes a cleaning device with an air duct and a floor scrubber body, wherein one end of the floor scrubber body is provided with a grip and the other end is connected to the cleaning device;

[0028] It also includes an infusion pipeline and a clean liquid container. The base is provided with a first spray nozzle and a second spray nozzle. The first spray nozzle is corresponding to the front roller brush, and the second spray nozzle is corresponding to the rear roller brush. One end of the infusion pipeline is connected to the clean liquid container, and the other end is connected to the first spray nozzle and the second spray nozzle respectively. The infusion pipeline is used to deliver cleaning liquid to the front roller brush and the rear roller brush.

[0029] The present invention has at least the following beneficial effects:

[0030] The present invention discloses a cleaning device with an air duct and a floor scrubber having the same. The cleaning device with the air duct includes a base and a suction assembly. The base is provided with at least one front roller brush and at least one rear roller brush, which are rotatably mounted on the base and abut against the surface to be cleaned. The base is also provided with at least one front suction port and at least one rear suction port. The suction assembly includes at least one front air duct, at least one rear air duct, and a converging air duct. The front suction port is correspondingly arranged with the front roller brush. Both ends of the front air duct are respectively connected to the front suction port and the converging air duct to suction the material cleaned by the front roller brush. The rear suction port is correspondingly arranged with the rear roller brush. Both ends of the rear air duct are respectively connected to the rear suction port and the converging air duct to suction the material cleaned by the rear roller brush. The distance traveled by the cleaning airflow from the front suction port through the front air duct to the converging air duct is shorter than the distance traveled by the cleaning airflow from the rear suction port through the rear air duct to the converging air duct. The front roller brush is the main cleaning roller brush, and the rear roller brush is the auxiliary cleaning roller brush. The front air duct absorbs more substances than the rear air duct. This invention enhances the suction power of the front air duct by making the travel distance of the cleaning airflow in the front air duct shorter than that in the rear air duct, so that the substances can be smoothly and quickly recovered. This overcomes the shortcomings of the prior art, such as poor suction effect and easy duct blockage, and improves the dirt suction capacity of the cleaning device.

[0031] Furthermore, the front air duct includes a first air duct and a second air duct. The first air duct corresponds to the front suction port, and the second air duct corresponds to the converging air duct. The second air duct is narrower than the first air duct, and its inner wall facing the front roller brush is a first sidewall, which is a concave arc surface. Similarly, the rear air duct also includes a first air duct and a second air duct. The first air duct corresponds to the rear suction port, and the second air duct corresponds to the converging air duct. The second air duct is narrower than the first air duct, and its inner wall facing the rear roller brush is a second sidewall, which is also a concave arc surface. By designing the first and second sidewalls as concave arc surfaces, the resistance encountered by materials moving within the air duct is effectively reduced, the speed of material movement during recovery is increased, and the probability of material blockage within the air duct is reduced.

[0032] Furthermore, a cover plate is provided on the base, and a first side wall and a second side wall are set on the cover plate. The first and second side walls are an integral structure, and the first and second side walls are detachably connected to the base. Because the first and second side walls are detachably connected to the base, when material blocks the air duct, the user only needs to remove the cover plate to clean the air duct, making air duct cleaning convenient and saving maintenance time. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic cross-sectional view of the overall structure of the cleaning device with air duct of the present invention;

[0035] Figure 2 This is a schematic diagram of the cleaning device with an air duct according to the present invention;

[0036] Figure 3 This is an exploded view of the cleaning device with an air duct according to the present invention;

[0037] Figure 4 This is a schematic diagram of the cover plate of the cleaning device with air duct of the present invention;

[0038] Figure 5 This is a cross-sectional view of the combined air duct and fixing member of the cleaning device with air duct of the present invention;

[0039] Figure 6 This is a schematic diagram of the structure of the floor scrubber of the present invention;

[0040] Figure 7 A cross-sectional view of the cleaning device with an air duct provided in Embodiment 1;

[0041] Figure 8 A cross-sectional view of the suction assembly of the cleaning device with an air duct provided in Embodiment 1;

[0042] Figure 9 A cross-sectional view of the cleaning device with an air duct provided in Embodiment 2;

[0043] Figure 10 A cross-sectional view of the cleaning device with an air duct provided in Embodiment 3;

[0044] Figure 11 This is a cross-sectional view of the cleaning device with an air duct provided in Example 4.

[0045] Figure label:

[0046] 1-Base; 4-Clean liquid container; 5-Floor scrubber body; 11-Front suction port; 12-Rear suction port; 13-Cover plate; 15-Fixing component; 16-First spray nozzle; 17-Second spray nozzle; 21-Front roller brush; 22-Rear roller brush; 31-Front air duct; 32-Rear air duct; 33-Converging air duct; 34-Recovery container; 35-First cyclone device; 36-Second cyclone device; 42-Second infusion pipe; 51-Holding part; 131-First side wall; 132 - Second sidewall; 311- First air duct of the front air duct; 312- First air duct of the rear air duct; 314- Second air duct of the front air duct; 315- Second air duct of the rear air duct; 351- First protrusion; 361- Second protrusion; 3111- First receiving groove; 3121- Second receiving groove; 3131- Third receiving groove; 3132- Annular groove; X1- Minimum distance for airflow to reach the converging air duct via the front air duct; X2- Minimum distance for airflow to reach the converging air duct via the rear air duct. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0048] like Figures 1 to 8 As shown, the present invention provides a cleaning device with an air duct and a floor scrubber having the same, wherein the cleaning device with the air duct includes a base 1 and a suction assembly. The base 1 is provided with at least one front roller brush 21 and at least one rear roller brush 22, which are rotatably mounted on the base 1 and abut against the surface to be cleaned. The base 1 is also provided with at least one front suction port 11 and at least one rear suction port 12.

[0049] The suction assembly includes at least one front air duct 31, at least one rear air duct 32, and a converging air duct 33. The front suction port 11 is correspondingly arranged with the front roller brush 21. Both ends of the front air duct 31 are connected to the front suction port 11 and the converging air duct 33, respectively, to suction the material cleaned by the front roller brush 21. The rear suction port 12 is correspondingly arranged with the rear roller brush 22. Both ends of the rear air duct 32 are connected to the rear suction port 12 and the converging air duct 33, respectively, to suction the material cleaned by the rear roller brush 22.

[0050] The suction assembly also includes a fan and a recovery container 34. The fan is used to generate negative pressure at the front suction port 11 to draw in the dirty liquid generated by the front roller brush 21 and recover it to the recovery container 34 through the front air duct 31 and the converging air duct 33. The fan is also used to generate negative pressure at the rear suction port 12 to draw in the dirty liquid generated by the rear roller brush 22 and recover it to the recovery container 34 through the rear air duct 32 and the converging air duct 33.

[0051] Example 1

[0052] like Figures 1 to 8 As shown, in this embodiment, a front roller brush 21 and a rear roller brush 22 are provided on the base 1. The front roller brush 21 and the rear roller brush 22 are rotatably mounted on the base 1 and abut against the surface to be cleaned. The base 1 is also provided with a front suction port 11 and a rear suction port 12. The suction assembly includes a front air duct 31, a rear air duct 32, and a converging air duct 33. The front suction port 11 is correspondingly arranged with the front roller brush 21. The two ends of the front air duct 31 are respectively connected to the front suction port 11 and the converging air duct 33 to suction the material cleaned by the front roller brush 21. The rear suction port 12 is correspondingly arranged with the rear roller brush 22. The two ends of the rear air duct 32 are respectively connected to the rear suction port 12 and the converging air duct 33 to suction the material cleaned by the rear roller brush 22.

[0053] like Figures 1 to 8 As shown, the direction in which the user moves forward using the cleaning device is considered the forward direction, and the direction in which the user moves backward using the cleaning device is considered the backward direction. The base 1 has a first receiving cavity along the forward direction of the cleaning device, and a second receiving cavity along the backward direction of the cleaning device. The front roller brush 21 is rotatably disposed in the first receiving cavity, and the rear roller brush 22 is rotatably disposed in the second receiving cavity.

[0054] The cleaning device can move forward or backward under the user's control, with the backward direction being opposite to the forward direction. When the cleaning device moves forward under the user's control, the front roller brush 21 and the rear roller brush 22 clean the ground in sequence; when the cleaning device moves backward under the user's control, the rear roller brush 22 and the front roller brush 21 clean the ground in sequence.

[0055] The front suction port 11 is located on the first receiving cavity and faces the front roller brush 21, and is used to absorb the dirty liquid generated by the front roller brush 21 as well as dust, hair and other substances in the first receiving cavity. The rear suction port 12 is located on the second receiving cavity and faces the rear roller brush 22, and is used to absorb the dirty liquid generated by the rear roller brush 22 as well as dust, hair and other substances in the second receiving cavity.

[0056] The cross-section of the front suction port 11 is larger than that of the rear suction port 12. Under normal conditions, the user drives the cleaning device forward to clean the surface to be cleaned. Therefore, the amount of material in the first chamber is greater than that in the second chamber, making the workload of the front suction port 11 greater than that of the rear suction port 12. By increasing the area of ​​the front suction port 11, it can absorb the material in the first chamber more quickly, improving the efficiency of material absorption and reducing the burden on the rear suction port 12.

[0057] Specifically, the front suction port 11 is located at the lower edge of the first receiving cavity and faces the bottom of the front roller brush 21, so that the front suction port 11 can absorb the dirty liquid in the first receiving cavity to the maximum extent. The rear suction port 12 is located at the lower edge of the second receiving cavity and faces the bottom of the rear roller brush 22, so that the rear suction port 12 can absorb the dirty liquid in the second receiving cavity to the maximum extent.

[0058] like Figures 1 to 8 As shown, an air duct 31 is provided on the base 1. The air duct 31 is located between the front roller brush 21 and the rear roller brush 22. The air duct 31 includes a front air duct 31, a rear air duct 32, and a converging air duct 33. In this embodiment, the base 1 is recessed inward along the front suction port 11 to form the front air duct 31, and recessed inward along the rear suction port 12 to form the rear air duct 32.

[0059] Specifically, the base 1 has a smooth, accommodating design on both sides of the front suction port 11. The opening length of the smooth design matches the length of the front roller brush 21 and is accommodated in the front suction port 11. The smooth design is specifically a streamlined shell, which helps to reduce the resistance when materials enter the front suction port 11 and facilitates the recovery of materials in the first accommodating cavity and the dirty liquid cleaned by the front roller brush 21.

[0060] Specifically, the base 1 is also equipped with the same smooth design along both sides of the rear suction port 12. The opening length of the smooth design matches the length of the rear roller brush 22 and is housed in the rear suction port 12. The smooth design is specifically a streamlined shell, which helps to reduce the resistance when the material enters the rear suction port 12 and facilitates the recovery of the material in the second receiving cavity and the dirty liquid cleaned by the rear roller brush 22.

[0061] like Figures 1 to 8 As shown, the front air duct 31 includes a first air duct 311 and a second air duct 314. The first air duct 311 corresponds to the front suction port 11, and the second air duct 314 corresponds to the converging air duct 33. The second air duct 314 is narrower than the first air duct 311, which facilitates the connection between the second air duct 314 and the converging air duct 33 and avoids the cross-section of the converging air duct 33 being too large, thus increasing the volume of the cleaning device.

[0062] The rear air duct 32 also includes a first air duct 312 and a second air duct 315. The first air duct 312 of the rear air duct corresponds to the rear suction port 12, and the second air duct 315 of the rear air duct corresponds to the converging air duct 33. The second air duct 315 of the rear air duct is narrower than the first air duct 312 of the rear air duct, which facilitates the connection between the second air duct 315 of the rear air duct and the converging air duct 33, and avoids the cross-section of the converging air duct 33 being too large, thus increasing the volume of the cleaning device.

[0063] like Figures 1 to 8 As shown, the second air duct 314 of the front air duct and / or the second air duct 315 of the rear air duct are provided with cyclone devices for generating cyclones. The cyclone device has a spiral-shaped air guide slope, but it is not necessarily an arc-shaped spiral air guide slope. It can also be a spiral-like air guide slope. For example, when the air guide slope is planar, it forms a spiral-like shape with the first air duct 311, thereby achieving the effect of generating a cyclone.

[0064] It is understood that a first cyclone device 35 for generating cyclones is provided within the second air duct 314 of the front air duct. In this embodiment, the first cyclone device 35 includes a first protrusion 351 with an inclined surface, which is disposed on the windward surface of the second air duct 314. Multiple first protrusions 351 are provided on the second air duct 314, and the inclined surfaces of the multiple first protrusions 351 cooperate to form the convex-concave inner wall of the second air duct 314. The suction force generated by the cleaning device drawing in material cooperates with the first protrusions 351 within the second air duct 314 to form a cyclone. This allows the material recovered by the first suction port 11 to rotate and advance into the converging air duct 33 as it passes through the second air duct 314, preventing the recovered material from clogging the second air duct 314 and reducing the maintenance frequency of the cleaning device.

[0065] Optionally, in other embodiments, the first cyclone device may also include a first blade, which is disposed on the inner wall of the second air duct 314 of the front air duct, for rotating to generate a cyclone, thereby preventing the recovered material from clogging the second air duct 314 of the front air duct and reducing the maintenance frequency of the cleaning device.

[0066] like Figures 1 to 8As shown, a second cyclone device 36 for generating cyclones is provided inside the second air duct 315 of the rear air duct. In this embodiment, the second cyclone device 36 includes a second protrusion 361 with an inclined surface, which is disposed on the windward side of the second air duct 315 of the rear air duct. Multiple second protrusions 361 are provided on the second air duct 315 of the rear air duct, and the inclined surfaces on the multiple second protrusions 361 cooperate to form the convex and concave inner wall of the second air duct 315 of the rear air duct. The suction force generated by the cleaning device drawing in material cooperates with the second protrusions 361 within the second air duct 315 of the rear air duct to form a cyclone. This allows the material recovered by the second suction port 12 to rotate and advance into the converging air duct 33 when passing through the second air duct 315 of the rear air duct, preventing the recovered material from clogging the second air duct 315 of the rear air duct and reducing the maintenance frequency of the cleaning device.

[0067] Optionally, in other embodiments, the second cyclone device may also include a second blade, which is disposed on the inner wall of the second air duct 315 of the rear air duct, for rotating to generate a cyclone, thereby preventing the recovered material from clogging the second air duct 315 of the rear air duct and reducing the maintenance frequency of the cleaning device.

[0068] like Figures 1 to 8 As shown, the first air duct 311 of the front air duct and the first air duct 312 of the rear air duct are arranged laterally along the plane of the cleaning surface. When the fan is working, the resistance encountered by the dirty liquid in the first air duct 311 of the front air duct and the first air duct 312 of the rear air duct is small, which facilitates the transportation of dirty liquid; when the fan stops working, the dirty liquid is not likely to flow back to the front suction port 11 or the rear suction port 12 due to gravity, thereby re-contaminating the ground and reducing the cleaning effect of the floor scrubber.

[0069] The converging air duct 33 is vertically arranged along the plane of the clean surface. The second air duct 314 of the front air duct bends upward along the first air duct 311 of the front air duct, and the second air duct 315 of the rear air duct bends upward along the first air duct 312 of the rear air duct. The second air ducts 314 and 315 of the front and rear air ducts are connected to the converging air duct 33. The connection in the horizontal and vertical directions is achieved through the second air ducts 314 and 315 of the front and rear air ducts.

[0070] like Figures 1 to 8As shown, the inner wall of the second air duct 314 of the front air duct facing the front roller brush 21 is the first sidewall 131, which is a downwardly concave arc-shaped surface. The inner wall of the second air duct 315 of the rear air duct facing the rear roller brush 22 is the second sidewall 132, which is also a downwardly concave arc-shaped surface. The first sidewall 131 and the second sidewall 132 are streamlined. This streamlined design reduces the resistance encountered by the dirty liquid when transporting it from the lateral direction to the vertical direction, facilitating a smooth transition of the dirty liquid through the front air duct 31 or the rear air duct 32 to the converging air duct 33. This improves the suction effect of the air duct, reduces the probability of air duct blockage in the cleaning device, and reduces the maintenance frequency of the cleaning device.

[0071] like Figures 1 to 8 As shown, the upper inner wall length of the front air duct 31 is the minimum distance X1 for airflow from the front suction port 11 through the front air duct 31 to the converging air duct 33, and the upper inner wall length of the rear air duct 32 is the minimum distance X2 for airflow from the rear suction port 12 through the rear air duct 32 to the converging air duct 33. In this invention, the minimum distance X1 for airflow from the front suction port 11 through the front air duct 31 to the converging air duct 33 is shorter than the minimum distance X2 for airflow from the rear suction port 12 through the rear air duct 32 to the converging air duct 33. In one embodiment of this invention, the ratio of X1:X2 is 1:2, but it is not limited to this and can also be 1:3 or other ratios.

[0072] The cleaning device of this invention performs a first cleaning of the cleaning surface by rolling the front roller brush 21, and a second cleaning by rolling the rear roller brush 22. Therefore, the front suction port 11 absorbs more dirty liquid and fine particles such as dust and hair from the ground than the rear suction port 12 absorbs. This invention increases the suction power of the front air duct 31 by reducing the minimum distance the airflow travels through it, thus enhancing the suction capacity of the front suction port 11 and shortening the path of matter within the front air duct 31. This allows the matter sucked in through the front suction port 11 to pass smoothly and quickly through the front air duct 31 and be recovered to the recovery container 34. This avoids blockage of the front air duct 31 due to the long path of matter, which would otherwise reduce the suction effect of the front suction port 11. This overcomes the shortcomings of existing cleaning devices, such as poor suction effect and easy blockage of air ducts, improving the cleaning ability and increasing the service life of the cleaning device.

[0073] like Figures 1 to 8 As shown, the converging air duct 33 is located between the front air duct 31 and the rear air duct 32, and the dirty liquid transport directions of the front air duct 31 and the rear air duct 32 are arranged opposite to each other. The front air duct 31 and the rear air duct 32 are arranged in an approximately symmetrical containment shape to the converging air duct 33, which helps to save the suction path of the cleaning device, reduce the fan power, and slow down the power consumption of the cleaning device.

[0074] like Figures 1 to 8As shown, a cover plate 13 is also provided on the base 1, and the cover plate 13 is detachably connected to the base 1. A first side wall 131 and a second side wall 132 are provided on the cover plate 13, and the first side wall 131 and the second side wall 132 are an integral structure. When the cover plate 13 is detachably connected to the base 1, the first side wall 131, the second side wall 132 and the inner wall of the base 1 form a second air duct 314 for the front air duct and a second air duct 315 for the rear air duct.

[0075] With the detachable fastening design of the cover plate 13 and the base 1, when fine particles such as dust and hair become blocked during recycling as they move from the horizontal direction to the vertical direction, specifically in the second air duct 314 of the front air duct or the second air duct 315 of the rear air duct, the user only needs to remove the cover plate 13 to clean the blocked area and remove the material, facilitating air duct cleaning. Furthermore, the entire cleaning device can be inspected without disassembling it, saving maintenance time and improving the ease of use of the cleaning device.

[0076] Specifically, the cover plate 13 and the base 1 are detachably connected by a threaded connection. Alternatively, the cover plate 13 and the base 1 can also be detachably connected by a snap-fit ​​connection or other means.

[0077] like Figures 1 to 8 As shown, the material enters the converging air duct 33 after passing through the second air duct 314 of the front air duct or the second air duct 315 of the rear air duct. The inner wall of the converging air duct 33 is provided with multiple transverse annular grooves 3132, and the annular grooves 3132 are inclined upward relative to the plane where the clean surface is located, forming a spiral inner wall of the converging air duct 33. This facilitates the material to climb along the annular grooves 3131 under the drive of the fan, and makes it easier for the material to move spirally upward along the inner wall of the converging air duct 33.

[0078] In this embodiment, the converging air duct 33 is connected to the second air duct 314 of the front air duct and the second air duct 315 of the rear air duct. A fixing member 15 for fixing the converging air duct 33 is provided in the base 1. The fixing member 15 is located at the connection between the second air duct 314 of the front air duct, the second air duct 315 of the rear air duct and the converging air duct 33.

[0079] Specifically, the fixing member 15 has a hollow structure, and the converging air duct 33 passes through the fixing member 15 and connects with the second air duct 314 of the front air duct and the second air duct 315 of the rear air duct, thereby achieving air duct connectivity. In this embodiment, the sidewall of the converging air duct 33 is provided with transverse multi-ring annular grooves, so that both the inner and outer surfaces of the converging air duct 33 are threaded. The inner wall of the fixing member 15 is correspondingly provided with threaded grooves, and the converging air duct 33 is threadedly connected to the fixing member 15, thereby fixing the converging air duct 33 to the fixing member 15.

[0080] like Figures 1 to 8 As shown, the second air duct 314 of the front air duct is provided with a first receiving groove 3111, which is located at the bottom of the second air duct 314. The second air duct 315 of the rear air duct is provided with a second receiving groove 3121, which is located at the bottom of the second air duct 315. A third receiving groove 3131 is provided at the connection between the first sidewall 131 and the second sidewall 132.

[0081] When the fan stops operating, some substances remain in the air duct 31. Due to the lack of negative pressure caused by the fan's cessation, they cannot move to the recovery container 34. At this time, the substances will flow back due to gravity. The third receiving tank 3131, located at the connection between the first side wall 131 and the second side wall 132, is used to recover the substances remaining in the converging air duct 33. The first receiving tank 3111 is used to recover the substances that were not completely collected in the third receiving tank 3131 and were originally located in the converging air duct 33, as well as the substances in the second air duct 314 located in the front air duct. The second receiving tank 3121 is used to recover the substances that were not completely collected in the third receiving tank 3131 and were originally located in the converging air duct 33, as well as the substances in the second air duct 315 located in the rear air duct.

[0082] like Figures 1 to 8 As shown, the floor scrubber provided by the present invention includes a cleaning device with an air duct and a floor scrubber body 5. One end of the floor scrubber body 5 is provided with a grip part 51, and the other end is connected to the cleaning device. The user drives the cleaning device to clean the floor by controlling the grip part 51, which is highly convenient.

[0083] like Figures 1 to 8 As shown, the floor scrubber also includes a liquid delivery pipe and a clean liquid container 4. A first spray nozzle 16 and a second spray nozzle 17 are provided on the base 1. The first spray nozzle 16 corresponds to the front roller brush 21, and the second spray nozzle 17 corresponds to the rear roller brush 22. One end of the liquid delivery pipe 42 is connected to the clean liquid container 4, and the other end is connected to both the first spray nozzle 16 and the second spray nozzle 17. The liquid delivery pipe is used to deliver cleaning liquid to the front roller brush 21 and the rear roller brush 22, facilitating the cleaning of the floor by the front roller brush 21 and the rear roller brush 22 and improving their cleaning ability.

[0084] The clean liquid container 4 and the recycling container 34 are respectively fastened to the main body 5 of the floor scrubber. The two ends of the collecting air duct 33 are located inside the cleaning device and the main body 5 of the floor scrubber, respectively, so that the dirty liquid can be recycled to the recycling container 34 through the air duct 31.

[0085] Example 2

[0086] like Figure 9As shown, the base is provided with two front roller brushes 21, which are arranged side by side along a straight line. The base is provided with two rear roller brushes 22, which are arranged side by side along a straight line. The front roller brushes 21 and the rear roller brushes 22 are rotatably mounted on the base and abut against the surface to be cleaned.

[0087] The front suction port is correspondingly positioned to the two front roller brushes 21, and the rear suction port is correspondingly positioned to the two rear roller brushes 22. The front suction port is located on the first receiving cavity and faces the two front roller brushes 21, and is used to absorb the dirty liquid generated by the two front roller brushes 21, as well as dust, hair, and other substances in the first receiving cavity. The rear suction port is located on the second receiving cavity and faces the two rear roller brushes 22, and is used to absorb the dirty liquid generated by the two rear roller brushes 22, as well as dust, hair, and other substances in the second receiving cavity.

[0088] The suction assembly includes a front air duct 31, a rear air duct 32, and a converging air duct 33. The two ends of the front air duct 31 are connected to the front suction port and the converging air duct 33, respectively, to suction the material cleaned by the two front roller brushes 21. The two ends of the rear air duct 32 are connected to the rear suction port and the converging air duct 33, respectively, to suction the material cleaned by the two rear roller brushes 22.

[0089] The distance the clean airflow from the front suction port through the front air duct 31 to the converging air duct 33 is shorter than the distance the clean airflow from the rear suction port through the rear air duct 32 to the converging air duct 33.

[0090] The cleaning device of the present invention performs a first cleaning by rolling two front roller brushes 21, each precisely cleaning its corresponding surface. Then, it performs a second cleaning by rolling two rear roller brushes 22, each precisely cleaning its corresponding surface. Therefore, the front suction port absorbs more dirty liquid and fine particles such as dust and hair on the ground than the rear suction port absorbs.

[0091] This invention improves the suction power of the front air duct 31 by reducing the minimum distance the airflow travels through it, thereby enhancing the suction capacity of the front suction port and shortening the path of materials within the duct. This allows materials sucked in through the front suction port to pass smoothly and quickly through the duct and be recovered to the collection container. It avoids blockage of the front air duct 31 due to slow movement caused by a long path, which would otherwise reduce the suction effect of the front suction port. This invention overcomes the shortcomings of existing cleaning devices, such as poor suction and easy blockage of air ducts, improving the cleaning ability and extending the service life of the cleaning device.

[0092] The other contents of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

[0093] Example 3

[0094] like Figure 10 As shown, the base is provided with two front roller brushes 21, which are arranged side by side in a straight line. The base is also provided with a rear roller brush 22. The front roller brushes 21 and the rear roller brush 22 are rotatably mounted on the base and abut against the surface to be cleaned.

[0095] The front suction port is correspondingly positioned to the two front roller brushes 21, and the rear suction port is correspondingly positioned to the rear roller brush 22. The front suction port is located on the first receiving cavity and faces the two front roller brushes 21, and is used to absorb the dirty liquid generated by the two front roller brushes 21 as well as dust, hair, and other substances in the first receiving cavity. The rear suction port is located on the second receiving cavity and faces the rear roller brush 22, and is used to absorb the dirty liquid generated by the rear roller brush 22 as well as dust, hair, and other substances in the second receiving cavity.

[0096] The distance the clean airflow from the front suction port through the front air duct 31 to the converging air duct 33 is shorter than the distance the clean airflow from the rear suction port through the rear air duct 32 to the converging air duct 33.

[0097] The cleaning device of the present invention performs a first cleaning of the cleaning surface by rolling two front roller brushes 21, each of which precisely cleans the corresponding surface to be cleaned. Then, it performs a second cleaning of the cleaning surface by rolling a rear roller brush 22. Therefore, the front suction port absorbs more dirty liquid and dust, hair and other substances on the ground than the rear suction port absorbs.

[0098] This invention improves the suction power of the front air duct 31 by reducing the minimum distance the airflow travels through it, thereby enhancing the suction capacity of the front suction port and shortening the path of materials within the duct. This allows materials sucked in through the front suction port to pass smoothly and quickly through the duct and be recovered to the collection container. It avoids blockage of the front air duct 31 due to slow movement caused by a long path, which would otherwise reduce the suction effect of the front suction port. This invention overcomes the shortcomings of existing cleaning devices, such as poor suction and easy blockage of air ducts, improving the cleaning ability and extending the service life of the cleaning device.

[0099] The other contents of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

[0100] Example 4

[0101] like Figure 11 As shown, the base is provided with a front roller brush 21 and two rear roller brushes 22, which are arranged side by side along a straight line. The front roller brush 21 and the rear roller brushes 22 are rotatably mounted on the base and abut against the surface to be cleaned.

[0102] The front suction port is correspondingly positioned to the front roller brush 21, and the rear suction port is correspondingly positioned to the two rear roller brushes 22. The front suction port is located on the first receiving cavity and faces the front roller brush 21, and is used to absorb the dirty liquid generated by the front roller brush 21, as well as dust, hair, and other substances in the first receiving cavity. The rear suction port is located on the second receiving cavity and faces the two rear roller brushes 22, and is used to absorb the dirty liquid generated by the two rear roller brushes 22, as well as dust, hair, and other substances in the second receiving cavity.

[0103] The distance the clean airflow from the front suction port through the front air duct 31 to the converging air duct 33 is shorter than the distance the clean airflow from the rear suction port through the rear air duct 32 to the converging air duct 33.

[0104] The cleaning device of the present invention performs a first cleaning of the cleaning surface by rolling the front roller brush 21, and then performs a second cleaning of the cleaning surface by rolling the two rear roller brushes 22. The two rear roller brushes 22 respectively precisely clean the corresponding surfaces to be cleaned. Therefore, the dirty liquid absorbed by the front suction port and the dirt, hair and other substances on the ground will be more than the dirty liquid absorbed by the rear suction port.

[0105] This invention improves the suction power of the front air duct 31 by reducing the minimum distance the airflow travels through it, thereby enhancing the suction capacity of the front suction port and shortening the path of materials within the duct. This allows materials sucked in through the front suction port to pass smoothly and quickly through the duct and be recovered to the collection container. It avoids blockage of the front air duct 31 due to slow movement caused by a long path, which would otherwise reduce the suction effect of the front suction port. This invention overcomes the shortcomings of existing cleaning devices, such as poor suction and easy blockage of air ducts, improving the cleaning ability and extending the service life of the cleaning device.

[0106] The other contents of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

[0107] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of a preferred embodiment, and the modules or processes shown in the drawings are not necessarily essential for implementing the present invention.

[0108] Those skilled in the art will understand that the modules in the apparatus of the implementation scenario can be distributed within the apparatus of the implementation scenario as described, or they can be located in one or more apparatuses different from this implementation scenario with corresponding changes. The modules of the above-mentioned implementation scenario can be combined into one module, or they can be further divided into multiple sub-modules.

[0109] The serial numbers of the present invention mentioned above are for descriptive purposes only and do not represent the superiority or inferiority of the implementation scenarios.

[0110] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. Cleaning device with air duct, characterized in that The cleaning device comprises a base and a suction assembly; The base is provided with at least one front roller brush and at least one rear roller brush, which are rotatably arranged on the base and abut against the surface to be cleaned, and are further provided with at least one front suction port and at least one rear suction port; The suction assembly comprises at least one front air duct, at least one rear air duct and a converging air duct, the front suction port is correspondingly arranged with the front roller brush, the front air duct is in communication with the front suction port and the converging air duct at both ends, so as to suck the dirt cleaned by the front roller brush; the rear suction port is correspondingly arranged with the rear roller brush, the rear air duct is in communication with the rear suction port and the converging air duct at both ends, so as to suck the dirt cleaned by the rear roller brush; The air flow cleaned by the cleaning device from the front suction port to the converging air duct through the front air duct is shorter than the air flow cleaned by the cleaning device from the rear suction port to the converging air duct through the rear air duct; The front air duct comprises a first air duct and a second air duct, the first air duct of the front air duct corresponds to the front suction port, and the second air duct of the front air duct corresponds to the converging air duct; the rear air duct also comprises a first air duct and a second air duct, the first air duct of the rear air duct corresponds to the rear suction port, and the second air duct of the rear air duct corresponds to the converging air duct; The second air duct of the front air duct is provided with a first cyclone device for generating cyclone, the first cyclone device comprises a plurality of first protrusions with inclined surfaces, the plurality of first protrusions are arranged on the windward surface of the second air duct of the front air duct and cooperatively form the convex-concave inner wall of the second air duct of the front air duct; and / or, the second air duct of the rear air duct is provided with a second cyclone device for generating cyclone, the second cyclone device comprises a plurality of second protrusions with inclined surfaces, the plurality of second protrusions are arranged on the windward surface of the second air duct of the rear air duct and cooperatively form the convex-concave inner wall of the second air duct of the rear air duct.

2. The cleaning device with air duct according to claim 1, characterized in that The suction assembly further comprises a fan and a recovery container, the fan is used to generate negative pressure at the front suction port to suck the dirty liquid cleaned by the front roller brush and recover the dirty liquid to the recovery container through the front air duct and the converging air duct, and generate negative pressure at the rear suction port to suck the dirty liquid cleaned by the rear roller brush and recover the dirty liquid to the recovery container through the rear air duct and the converging air duct.

3. The cleaning device having an air duct according to claim 1, wherein, The second air duct of the front air duct is narrowed relative to the first air duct of the front air duct, the inner wall of the second air duct of the front air duct towards the front roller brush is a first side wall, and the first side wall is an arc-shaped concave surface; The second air duct of the rear air duct is narrowed relative to the first air duct of the rear air duct, the inner wall of the second air duct of the rear air duct towards the rear roller brush is a second side wall, and the second side wall is an arc-shaped concave surface.

4. The cleaning device with air duct according to claim 3, characterized in that The base is provided with a cover plate, the first side wall and the second side wall are arranged on the cover plate, and the first side wall and the second side wall are in an integral structure, and the first side wall, the second side wall and the base are detachably connected.

5. The cleaning device having an air duct according to claim 1, wherein, The inner wall of the converging air duct is provided with a plurality of transverse annular grooves, and the plurality of annular grooves form a spiral inner wall of the converging air duct.

6. The cleaning device having an air duct according to claim 3, wherein, The first air ducts of the front air duct and the rear air duct are arranged transversely along the plane where the cleaning surface is located, and the converging air duct is arranged vertically along the plane where the cleaning surface is located.

7. The cleaning device having an air duct according to claim 1, wherein, The air duct assembly is located between the front roller brush and the rear roller brush, and the front air duct is arranged opposite to the dirty liquid conveying direction of the rear air duct.

8. The cleaning device having an air duct according to claim 1, wherein, The cross section of the front dirty suction port is larger than that of the rear dirty suction port.

9. The cleaning device having an air duct according to claim 3, wherein, The second air duct of the front air duct is provided with a first containing groove for recycling substances remaining in the second air duct of the front air duct. The second air duct of the rear air duct is provided with a second containing groove for recycling substances remaining in the second air duct of the rear air duct.

10. The cleaning device having an air duct according to claim 4, wherein, The connecting part of the first side wall and the second side wall is provided with a third containing groove for recycling substances remaining in the converging air duct.

11. The cleaning device having an air duct according to claim 1, wherein, The base is provided with two front roller brushes, the base is provided with two rear roller brushes, the front dirty suction port corresponds to the two front roller brushes, and the rear dirty suction port corresponds to the two rear roller brushes. Or, the base is provided with two front roller brushes, the base is provided with one rear roller brush, the front dirty suction port corresponds to the two front roller brushes, and the rear dirty suction port corresponds to the rear roller brush. Or, the base is provided with one front roller brush, the base is provided with two rear roller brushes, the front dirty suction port corresponds to the front roller brush, and the rear dirty suction port corresponds to the two rear roller brushes.

12. The scrubber machine characterized by, The cleaning device with an air duct and a scrubber main body are provided, one end of the scrubber main body is provided with a holding part, and the other end is connected with the cleaning device; Further comprising a liquid supply pipeline and a clean liquid container, the base is provided with a first liquid injection port and a second liquid injection port, the first liquid injection port corresponds to the front roller brush, the second liquid injection port corresponds to the rear roller brush, one end of the liquid supply pipeline is in communication with the clean liquid container, and the other end is in communication with the first liquid injection port and the second liquid injection port respectively, and the liquid supply pipeline is used for supplying cleaning liquid to the front roller brush and the rear roller brush.

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