Surface cleaning system

Abstract

The utility model discloses a surface cleaning system, which belongs to the technical field of cleaning equipment and comprises a surface cleaning device provided with a floor brush and a base used for placing the surface cleaning device, the floor brush is provided with a cleaning piece driven by a motor, and the front end of the base is provided with a cleaning tank matched with the cleaning piece and a dirt blocking part located in front of the cleaning tank. An airflow generating module for providing airflow to dry the cleaning piece is arranged in the base, and an air outlet hole for blowing the airflow to the cleaning piece is formed in the dirt blocking part. The dirt blocking part comprises a front blocking wall and a rear blocking wall which are arranged front and back in a spaced mode and matched to form an air outlet cavity, the lower end of the rear blocking wall is provided with an arc-shaped transition part smoothly connected with the bottom wall of the cleaning tank, the radius of the arc-shaped transition part is larger than that of the cleaning piece, and the air outlet holes are formed in the rear blocking wall. Cleaning dead angles between the lower end of the rear retaining wall and the bottom wall of the cleaning tank are eliminated through the arc-shaped transition part, so that the cleaning tank can be kept clean after self-cleaning of the cleaning part is finished, and the use experience of a user is improved.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, and in particular to a surface cleaning system. Background Technology

[0002] With the development of technology, there are more and more types of surface cleaning equipment, and various surface cleaning devices have gradually entered people's homes and become common electrical appliances for cleaning floors. Existing handheld floor scrubbers are generally equipped with a base, which allows the handheld floor scrubber to be charged and self-cleaned when placed on the base.

[0003] The base is equipped with a cleaning tank for cleaning the cleaning parts. A dirt-blocking part is set on the front side of the cleaning tank, and an air outlet is set on the dirt-blocking part. After the cleaning parts are cleaned, the hot air flow provided by the drying module blows the cleaning parts from the air outlet to dry the cleaning parts. This ensures that the cleaning parts remain dry after self-cleaning and prevents bacteria from growing and odors from being in a damp state for a long time.

[0004] Because the cleaning component rotates back and forth during self-cleaning, to prevent the waste liquid in the cleaning tank from flowing upwards towards the air outlet and then into the base, the side wall where the air outlet is located is generally designed to be steep. This allows the upward-flowing waste liquid to flow back into the cleaning tank under its own weight. However, the angle between the steep wall where the air outlet is located and the bottom wall of the cleaning tank can easily create a cleaning dead zone. The rotating cleaning component cannot reach this dead zone, which easily accumulates a large amount of sand and dirt. Once the sand and dirt dry, they become even more difficult to clean, which is detrimental to the user experience. Utility Model Content

[0005] To address the shortcomings and deficiencies of the existing technology, this utility model provides a surface cleaning system that eliminates the cleaning dead angle between the lower end of the rear baffle and the bottom wall of the cleaning tank through an arc-shaped transition section, so that the cleaning tank can remain clean after the cleaning components have finished self-cleaning, thereby improving the user experience.

[0006] To achieve the above-mentioned technical objectives, this utility model provides a surface cleaning system, including a surface cleaning device with a floor brush and a base for placing the surface cleaning device. The floor brush has a cleaning component driven by a motor. The front end of the base has a cleaning tank adapted to the cleaning component and a dirt-blocking part located in front of the cleaning tank. The interior of the base has an airflow generating module that provides airflow to dry the cleaning component. The dirt-blocking part has an air outlet for airflow to blow onto the cleaning component. The dirt-blocking part includes a front baffle wall and a rear baffle wall that are spaced apart and cooperate to form an air outlet cavity. The lower end of the rear baffle wall has an arc-shaped transition part that is smoothly connected to the bottom wall of the cleaning tank. The radius of the arc-shaped transition part is larger than the radius of the cleaning component. The air outlet is located on the rear baffle wall.

[0007] Preferably, the lower end of the arc-shaped transition portion is tangent to the front end of the bottom wall of the cleaning tank; and / or, the rear baffle includes an inclined wall portion extending obliquely backward from top to bottom, with the upper end of the arc-shaped transition portion tangent to the lower end of the inclined wall portion.

[0008] Preferably, at least a portion of the air outlet is higher than the arc-shaped transition portion.

[0009] Preferably, the radial gap between the arc-shaped transition portion and the outer surface of the cleaning component gradually widens from bottom to top; or, the arc-shaped transition portion and the cleaning component are substantially concentrically arranged.

[0010] Preferably, the rear baffle wall is provided with an upper baffle rib that protrudes rearward and is located above the air outlet. The left and right ends of the upper baffle rib extend beyond the air outlet. The upper baffle rib extends obliquely downward from one end to the other end or extends obliquely downward from the middle to both ends.

[0011] Preferably, the rear baffle wall is provided with a lower baffle rib that protrudes rearward and is located below the air outlet, with the left and right ends of the lower baffle rib extending beyond the air outlet.

[0012] Preferably, the left and right ends of the upper baffle extend beyond the left and right ends of the lower baffle; and / or, the lower baffle is made of elastic soft rubber.

[0013] Preferably, the bottom wall of the base is provided with a recessed water collection trough, the vertical projection of the air outlet falls in the water collection trough, and the bottom wall of the water collection trough is provided with a drain hole.

[0014] Preferably, the rear baffle is provided with a downwardly extending water baffle, which is located behind the air outlet, and the vertical projection of the water baffle falls into the water collection tank; and / or, the airflow generating module is provided with a heating unit, and the base is provided with a temperature detection element for detecting the airflow temperature, which is located close to the water collection tank.

[0015] Preferably, the top side of the dirt-blocking part is provided with a rearwardly extending baffle, the rear edge of which is located behind the air outlet and falls within the vertical projection range of the arc-shaped transition part.

[0016] By adopting the above technical solution, this utility model has the following advantages:

[0017] 1. The surface cleaning system provided by this utility model includes a front baffle wall and a rear baffle wall as its dirt-blocking part. An air outlet is located on the rear baffle wall. An arc-shaped transition section is provided between the lower end of the rear baffle wall and the bottom wall of the cleaning tank. This arc-shaped transition section allows for a smooth connection between the lower end of the rear baffle wall and the bottom wall of the cleaning tank, eliminating cleaning dead angles between them. Because the arc-shaped transition section is curved, the rotating cleaning component can contact it, allowing sand and dirt in the cleaning tank to be sucked away by the cleaning component. This avoids sand and dirt remaining between the lower end of the rear baffle wall and the bottom wall of the cleaning tank, preventing them from being difficult to remove. This ensures the cleaning tank remains clean after the cleaning component finishes self-cleaning, significantly reducing the frequency of manual cleaning of the base and improving the user experience. The radius of the arc-shaped transition section is larger than the radius of the cleaning component. By reasonably setting the radius relationship between the arc-shaped transition section and the cleaning component, interference from the arc-shaped transition section on the placement and rotation of the cleaning component can be avoided. This allows the cleaning component to smoothly enter the cleaning tank when the surface cleaning device is placed on the base. It also avoids the situation where the cleaning component located in the cleaning tank comes into contact with the arc-shaped transition section, which would hinder the rotation of the cleaning component. This helps to ensure the self-cleaning effect of the cleaning component.

[0018] 2. The lower end of the arc-shaped transition section is preferably tangent to the front end of the bottom wall of the cleaning tank, and the upper end of the arc-shaped transition section is preferably tangent to the lower end of the inclined wall. By reasonably setting the connection method between the upper and lower ends of the arc-shaped transition section and the corresponding parts, the lower end of the rear baffle and the bottom wall of the cleaning tank can be smoothly connected through the arc-shaped transition section, and the cleaning dead corners between the arc-shaped transition section and the bottom wall of the cleaning tank or between the arc-shaped transition section and the inclined wall can be avoided.

[0019] 3. The air outlet should be at least partially higher than the arc-shaped transition section to ensure its height relative to the rear baffle wall. This will allow the air outlet and the cleaning component to be aligned as much as possible in the height direction, enabling the airflow from the air outlet to effectively act on the entire outer circumference of the cleaning component, thus improving the drying effect. Furthermore, maintaining an appropriate height position of the air outlet relative to the rear baffle wall will prevent the dirty liquid carried by the rotating cleaning component in the cleaning tank from easily flowing into the base through the air outlet.

[0020] 4. The radial gap between the arc-shaped transition section and the outer surface of the cleaning component gradually widens from bottom to top. This reduces the difficulty for the cleaning component to enter the cleaning tank when the surface cleaning device is placed on the base, thus simplifying the user's operation. Additionally, the gradually widening gap also appropriately increases the distance between the air outlet and the cleaning component, preventing dirt thrown off by the cleaning component from easily entering the base through the air outlet.

[0021] 5. The rear baffle wall is equipped with a rearward-protruding upper baffle rib located above the air outlet. Both ends of the upper baffle rib extend beyond the air outlet, meaning its length is greater than the length of the area containing the air outlet. The upper baffle rib effectively blocks liquid splashed onto the upper part of the rear baffle wall, preventing it from flowing downwards through the air outlet into the base. This helps ensure the performance stability of the electrical components inside the base. The upper baffle rib extends diagonally downwards from one end to the other, or from the middle to both ends. A well-designed upper baffle rib structure allows liquid blocked by it to flow downwards along the inclined rib, preventing excessive accumulation and subsequent spread downwards along the surface of the upper baffle rib.

[0022] 6. The rear baffle is provided with a lower baffle rib that protrudes backward and is located below the air outlet. The left and right ends of the lower baffle rib extend beyond the air outlet, that is, the length of the lower baffle rib is greater than the length of the area where the air outlet is located. The lower baffle rib has a certain blocking effect on the liquid rolled up by the rotating cleaning parts in the cleaning tank. The lower baffle rib prevents the rolled-up liquid from flowing into the base from the air outlet, which helps to ensure the performance stability of the electrical components inside the base.

[0023] 7. The left and right ends of the upper baffle rib extend beyond the left and right ends of the lower baffle rib, meaning the length of the upper baffle rib is greater than the length of the lower baffle rib, and the lower baffle rib is completely within the length range of the upper baffle rib. This prevents liquid flowing downwards from the end of the upper baffle rib from contacting the lower baffle rib, thus avoiding the accumulation of liquid on the top side of the lower baffle rib and its spread towards the air outlet. The lower baffle rib is preferably made of elastic soft rubber to avoid hard contact between the lower baffle rib and the cleaning component, which could obstruct the rotation of the cleaning component.

[0024] 8. During the self-cleaning process of the cleaning components, the waste liquid splashed off by the cleaning components may enter the base through the air outlet. The bottom wall of the base is equipped with a recessed water collection tank, and the vertical projection of the air outlet falls into the water collection tank. The waste liquid splashed into the base from the air outlet can fall downward into the water collection tank. The waste liquid in the water collection tank can be discharged in time through the drain hole on the bottom wall, preventing the waste liquid splashed into the base from accumulating inside the base. This prevents the waste liquid entering the base from spreading to the electrical components inside the base and causing damage to the electrical components due to water contact, thus ensuring the performance stability of the electrical components inside the base.

[0025] 9. A downward-extending water-retaining edge is provided on the rear baffle wall, located behind the air outlet. This edge blocks spillage of contaminants from the air outlet, preventing them from spreading along the rear baffle wall and damaging electrical components inside the base. Because the vertical projection of the water-retaining edge falls into the water collection tank, contaminants splashed from the air outlet flow downwards along the edge and into the tank. The contaminants in the tank can then be promptly discharged through the drain hole, preventing accumulation inside the base.

[0026] The airflow generating module can be equipped with a heating unit, enabling it to dry cleaned parts with hot air after cleaning, improving drying efficiency and effectiveness. A temperature sensing element is installed within the base to detect the airflow temperature. The temperature signal from this element is used to adjust the heating intensity of the heating unit in real time. The temperature sensing element is positioned close to the water collection tank. Optimizing its location, placing it as close as possible to the air outlet, minimizes the difference between the temperature signal from the sensing element and the actual drying temperature of the cleaned parts, preventing overheating of the heating unit while ensuring effective drying.

[0027] 10. A rearward-extending baffle is provided on the top side of the dirt-blocking section. This baffle effectively blocks dirt ejected from the cleaning component during self-cleaning, preventing it from splashing onto the outside of the base and landing on the cleaned floor, thus improving the user experience. Additionally, when the airflow generation module dries the cleaning component, the baffle guides the airflow, preventing significant dissipation of airflow from the air outlet through the gap between the cleaning component and the dirt-blocking section. This ensures sufficient airflow to the cleaning component, improving drying efficiency and effectiveness. Especially when the airflow generation module uses hot air drying, the baffle prevents rapid dissipation of hot air, which could lead to a rapid drop in temperature, further enhancing the hot air drying effect. The rear edge of the baffle is located behind the air outlet and falls within the vertical projection range of the arc transition section. The end position of the baffle extending backward is reasonably set to ensure that the baffle can block splashed dirt and guide the airflow, and also to prevent the baffle from extending too far backward and obstructing the entry of cleaning parts into the cleaning tank. Attached Figure Description

[0028] Figure 1 This is a structural diagram of the surface cleaning device in Example 1;

[0029] Figure 2 This is a cross-sectional view of the ground brush in the front and rear directions in Example 1;

[0030] Figure 3 This is a structural diagram of the base in Example 1;

[0031] Figure 4 This is a front-to-back sectional view of the base in Embodiment 1;

[0032] Figure 5 This is a structural diagram of the lower housing in Embodiment 1;

[0033] Figure 6 This is a front-to-back sectional view of a portion of the surface cleaning device in Embodiment 1 when it is placed on the base;

[0034] Figure 7 This is a schematic diagram of the liquid supply assembly in Example 1;

[0035] Figure 8 This is a structural diagram of the base in Example 2;

[0036] Figure 9 This is a front-to-back sectional view of the front end of the base in Embodiment 2;

[0037] Figure 10 This is a front-to-back sectional view of the front end of the base in Embodiment 3;

[0038] Figure 11 This is a partial structural diagram of the base in Example 4;

[0039] Figure 12 This is a structural diagram of the base in Example 5.

[0040] Figure 13 This is a structural diagram of the retaining edge in Example 5;

[0041] Figure 14 This is a front-to-back sectional view of a portion of the surface cleaning device in Example 5, when it is placed on the base.

[0042] In the diagram, 10 - surface cleaning device.

[0043] 20-Base, 210-Cleaning tank, 220-Dirty baffle, 221-Air outlet, 222-Air outlet cavity, 223-Front baffle wall, 224-Rear baffle wall, 2241-Arc-shaped transition section, 2242-Sloping wall section, 230-Airflow generating module, 231-Fan unit, 232-Heating unit

[0044] 241-Upper housing, 242-Lower housing, 243-Protrusion, 244-Air guide channel, 245-Side baffle, 246-Water collection tank, 247-Drain hole, 248-Air inlet, 249-Boss, 251-Upper baffle rib, 252-Lower baffle rib, 253-Water baffle edge, 260-Temperature sensing element, 270-Side flange

[0045] 100-Floor brush, 110-Cleaning component, 120-Motor, 130-Floor brush body, 140-Roller brush cover, 150-Roller brush cavity, 160-Suction port, 170-Scraper component, 180-Floor scraper

[0046] 300 - fuselage, 310 - handle, 320 - hinge joint

[0047] 400 - Liquid supply assembly; 410 - Clean water tank; 420 - Water pump; 430 - Water distribution unit; 431 - Water outlet; 440 - Heating module.

[0048] 500-Sewage suction assembly, 510-Blower, 520-Sewage tank, 530-Sewage suction channel. Detailed Implementation

[0049] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," and "bottom," etc., which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0050] Example 1

[0051] Combination Figures 1 to 7 The first embodiment of this utility model provides a surface cleaning system, including a surface cleaning device 10 with a floor brush 100 and a base 20 for placing the surface cleaning device 10. The floor brush 100 is provided with a cleaning component 110 driven by a motor 120. The front end of the base 20 is provided with a cleaning groove 210 adapted to the cleaning component 110 and a dirt-blocking part 220 located in front of the cleaning groove 210. The interior of the base 20 is provided with an airflow generating module 230 that provides airflow to dry the cleaning component 110. The dirt-blocking part 220 is provided with an air outlet 221 for airflow to blow towards the cleaning component 110. The dirt-blocking part 220 includes a front baffle 223 and a rear baffle 224 that are spaced apart and cooperate to form an air outlet cavity 222. The lower end of the rear baffle 224 is provided with an arc-shaped transition part 2241 that is smoothly connected to the bottom wall of the cleaning tank 210. The radius R2 of the arc-shaped transition part 2241 is larger than the radius R1 of the cleaning component 110. The air outlet 221 is provided on the rear baffle 224.

[0052] The arc-shaped transition section 2241 allows the lower end of the rear baffle 224 to smoothly connect with the bottom wall of the cleaning tank 210, eliminating cleaning dead angles between the lower end of the rear baffle 224 and the bottom wall of the cleaning tank 210. Since the arc-shaped transition section 2241 is arc-shaped, the rotating cleaning component 110 can contact the arc-shaped transition section 2241, allowing sand and dirt in the cleaning tank 210 to be sucked away by the cleaning component 110. This avoids sand and dirt from being stuck between the lower end of the rear baffle 224 and the bottom wall of the cleaning tank 210 and being difficult to suck away, so that the cleaning tank 210 can remain clean after the cleaning component 110 finishes self-cleaning. This greatly reduces the frequency of manual cleaning of the base 20 by the user and improves the user experience. The radius R2 of the arc-shaped transition portion 2241 is greater than the radius R1 of the cleaning component 110. By reasonably setting the radius relationship between the arc-shaped transition portion 2241 and the cleaning component 110, interference of the arc-shaped transition portion 2241 with the placement and rotation of the cleaning component 110 is avoided. This allows the cleaning component 110 to smoothly enter the cleaning tank 210 when the surface cleaning device 10 is placed on the base 20. It also avoids the situation where the cleaning component 110 located in the cleaning tank 210 comes into contact with the arc-shaped transition portion 2241, which would hinder the rotation of the cleaning component 110. This helps to ensure the self-cleaning effect of the cleaning component 110.

[0053] Combination Figure 1 , Figure 2 In this embodiment, the surface cleaning device 10 is described using a handheld floor scrubber as an example. The floor brush 100 of the surface cleaning device 10 includes a floor brush body 130 and a roller brush cover 140. The roller brush cover 140 is detachably mounted on the top of the floor brush body 130, and the floor brush body 130 is provided with several rollers. The cleaning component 110 is detachably mounted on the front side of the floor brush body 130. When both the cleaning component 110 and the roller brush cover 140 are mounted on the floor brush body 130, the front part of the roller brush cover 140 is located above and covers the cleaning component 110. The motor 120 for driving the cleaning component 110 can be located inside the floor brush body 130 or on the front side of the floor brush body 130. When the motor 120 is located on the front side of the floor brush body 130, the cleaning component 110 mounted on the floor brush body 130 houses the motor 120. The cleaning component 110 can be a single roller brush structure, a double roller brush structure with front and rear distribution, or a tracked mop structure; no further restrictions are imposed here. The surface cleaning device 10 also includes a body 300, with a handle 310 at the upper end of the body 300, and the lower end of the body 300 is pivotally connected to the rear side of the floor brush body 130 via a hinge joint 320. The body 300 can swing back and forth relative to the floor brush 100.

[0054] In this embodiment, the surface cleaning device 10 is further provided with a liquid supply assembly 400, which is used to supply cleaning liquid to the cleaning component 110. Specifically, in conjunction with Figure 7The liquid supply assembly 400 includes a clean water tank 410, a water pump 420, and a water distributor 430, which are arranged sequentially from upstream to downstream via pipelines. The clean water tank 410 is detachably installed on the body 300, the brush body 130, or fixed to the bottom of the roller brush cover 140. The water pump 420 is located inside the brush body 130. The water distributor 430 is located on the front side of the brush body 130 or at the bottom of the front roller brush cover 140. The water distributor 430 has multiple water outlet holes 431 spaced apart in the left-right direction, which face the cleaning component 110. The cleaning liquid in the clean water tank 410 flows to the water distributor 430 under the pumping action of the water pump 420. The cleaning liquid flowing into the water distributor 430 is sprayed onto the cleaning component 110 from the water outlet holes 431, so that the cleaning component 110 can absorb and wet the cleaning liquid. As a preferred embodiment, the water distribution component 430 can adopt the existing technology of dividing a water inlet channel into 2 N The structure divides the water into multiple outlet channels in a manner where (N is a natural number). Of course, other components such as nozzles or spray heads that meet the liquid supply requirements can be used instead of the water distribution component 430. As an improvement to this embodiment, the liquid supply assembly 400 can be equipped with a heating module 440 or an electrolysis module upstream of the water distribution component 430. The heating module 440 is used to heat the flowing cleaning liquid, and the electrolysis module is used to electrolyze the flowing cleaning liquid, thereby improving the cleaning ability of the cleaning component 110. As an alternative to this embodiment, the liquid supply assembly 400 can also be equipped with a spraying component for spraying the cleaning liquid onto the ground based on the water distribution component 430. The spraying component is connected to the end of the pipeline through an electronic control valve. In this case, a ground spraying button can be provided on the handle 310 for selective operation by the user. If the user presses the ground spraying button, the electronic control valve opens, and the liquid supply assembly 400 can spray the cleaning liquid onto the ground through the spraying component.

[0055] In this embodiment, the roller brush cover 140 and the floor brush body 130 cooperate to form a roller brush cavity 150 adapted to the cleaning component 110. The floor brush body 130 is provided with a centrally located suction port 160, which is located behind and communicates with the roller brush cavity 150. The surface cleaning device 10 in this embodiment also includes a suction assembly 500, which includes a blower 510 and a wastewater tank 520. The wastewater tank 520 is detachably installed on the body 300. A suction channel 530 for communicating the suction port 160 and the wastewater tank 520 is provided between the lower end of the body 300 and the floor brush body 130. The specific structure of the wastewater tank 520 can be referred to the prior art, and will not be described in detail here. The blower 510 can be located at the upper part of the body 300, or it can be used as a component of the suction power source assembly. The suction power source assembly is detachably installed on the body 300. The suction power source assembly detached from the body 300 can be connected to a separate vacuuming accessory for dry vacuuming. When the blower 510 is working, it provides suction to create a negative pressure inside the wastewater tank 520 and forms a suction airflow from the suction port 160 into the wastewater tank 520. The dirt at the suction port 160 can flow into the wastewater tank 520 with the suction airflow, thus collecting the dirt.

[0056] In this embodiment, the front side of the floor brush body 130 is provided with a scraper 170 for scraping and squeezing the cleaning component 110. The scraper 170 extends along the axial direction of the cleaning component 110. The scraper 170 can adopt a single scraper structure, a single comb structure, or a combination of scraper and comb structure. The specific structure of the scraper 170 is not limited here. In addition, a floor scraper 180 is also provided at the lower edge of the front side of the floor brush body 130. The floor scraper 180 extends along the axial direction of the cleaning component 110, and the leading edge of the floor scraper 180 extends downward and can contact the ground. The water distribution component 430, the scraper component 170, the suction port 160, and the floor scraper 180 are distributed from top to bottom. The water distribution component 430 and the scraper component 170 can be installed together at the bottom of the roller brush cover 140, or together at the front of the floor brush body 130, or they can be installed separately with the water distribution component 430 at the bottom of the roller brush cover 140 and the scraper component 170 at the front of the floor brush body 130. There are no major restrictions on the installation position of the water distribution component 430 and the scraper component 170.

[0057] The surface cleaning device 10 also includes a battery pack and a control board. The battery pack supplies power to the electrical components of the surface cleaning device 10, while the control board controls the overall system. Electrical components such as the motor 120, fan 510, water pump 420, and airflow generation module 230 are controlled by the control board. The battery pack can be directly installed inside the body 300, or it can be used together with the fan 510 as a detachable suction power source assembly mounted on the body 300. A power connection module is provided on the base 20, and a charging structure for charging the battery pack is provided between the surface cleaning device 10 and the base 20. The charging structure is detachably plugged in. When the surface cleaning device 10 is placed on the base 20, the charging structure is plugged in, and the power connection module can charge the battery pack through the charging structure. The charging structure can refer to existing technology and will not be described in detail here.

[0058] Combination Figure 3 , Figure 4 The base 20 adopts a shell structure and includes an upper shell 241 and a lower shell 242 fixed together. The cleaning tank 210 is formed by the recessed front part of the upper shell 241, and the dirt-blocking part 220 is formed by bending the front end of the upper shell 241. Multiple air outlets 221 are spaced apart in the left-right direction. The upper shell 241 has an upwardly arched protrusion 243 at the rear end of the cleaning tank 210. In this embodiment, the rear baffle 224 includes a sloping wall 2242 extending obliquely from top to bottom and rearward. The upper end of the arc-shaped transition part 2241 is preferably tangent to the lower end of the sloping wall 2242, and the lower end of the arc-shaped transition part 2241 is preferably tangent to the front end of the bottom wall of the cleaning tank 210. By reasonably setting the connection method between the upper and lower ends of the arc-shaped transition part 2241 and the corresponding parts, the lower end of the rear baffle 224 and the bottom wall of the cleaning tank 210 can be smoothly connected through the arc-shaped transition part 2241. In this embodiment, the arc-shaped transition portion 2241 adopts a single arc-shaped surface structure. Figure 4 Point A represents the upper edge of the arc-shaped transition portion 2241, point B represents the lower edge of the arc-shaped transition portion 2241, point C represents the center of the arc-shaped transition portion 2241, line L1 represents the radial direction of point A, and line L2 represents the radial direction of point B. The tangent at point A to the lower end of the inclined wall portion 2242 is substantially perpendicular to the radial direction indicated by line L1, and the tangent at point B to the front end of the bottom wall of the cleaning tank 210 is substantially perpendicular to the radial direction indicated by line L2, thus ensuring smooth connection between the upper and lower ends of the arc-shaped transition portion 2241 and the lower end of the inclined wall portion 2242 and the front end of the bottom wall of the cleaning tank 210, respectively. As an alternative to this embodiment, the arc-shaped transition portion 2241 can also adopt a multi-arc surface combination structure with several arc surfaces smoothly connected.

[0059] To ensure the height of the air outlet 221, at least a portion of the air outlet 221 is higher than the arc-shaped transition portion 2241. Figure 4In the diagram, line L3 represents the height of the upper edge of the air outlet 221, and line L4 represents the height of the lower edge of the air outlet 221. The upper edge of the arc-shaped transition portion 2241 shown at point A is located between lines L3 and L4 in the height direction. That is, the upper part of the air outlet 221 is located on the inclined wall portion 2242 of the rear baffle 224, and the lower part of the air outlet 221 is located on the arc-shaped transition portion 2241 of the rear baffle 224. Furthermore, the local height h of the air outlet 221 on the arc-shaped transition portion 2241 does not exceed 1 / 3 of the total height H of the air outlet 221, that is, h / H≤1 / 3. As an alternative to this embodiment, the air outlet 221 can also be completely located on the inclined wall portion 2242 of the rear baffle 224, that is, line L4 is set higher than or level with point A.

[0060] Combination Figure 6 When the surface cleaning device 10 is placed on the base 20, the cleaning component 110 is suspended in the cleaning tank 210. The center of the arc-shaped transition portion 2241 (point C) is offset from the central axis of the cleaning component 110 (point D) by a certain distance, meaning the arc-shaped transition portion 2241 and the cleaning component 110 are not concentrically arranged. Furthermore, point C is located in front of point D, meaning the center of the arc-shaped transition portion 2241 is positioned forward relative to the central axis of the cleaning component 110. This causes the radial gap ΔR between the arc-shaped transition portion 2241 and the outer surface of the cleaning component 110 to gradually widen from bottom to top. This reduces the difficulty for the cleaning component 110 to enter the cleaning tank 210 when the surface cleaning device 10 is placed on the base 20, thus simplifying the user's operation. The gradually widening gap ΔR also appropriately increases the distance between the air outlet 221 and the cleaning component 110, preventing dirt thrown off by the cleaning component 110 from easily entering the base 20 through the air outlet 221. In addition, the air outlet 221 is set in the middle area of ​​the height direction of the cleaning component 110, so that the airflow blown out from the air outlet 221 can flow through the entire outer peripheral surface of the cleaning component 110, which is beneficial to improving the drying effect of the cleaning component 110.

[0061] Combination Figure 4 , Figure 5To improve the drying effect on the cleaning component 110, the airflow generating module 230 of this embodiment includes a fan unit 231 located upstream and a heating unit 232 located downstream. An air guide channel 244 is formed between the upper housing 241 and the lower housing 242, located between the heating unit 232 and the air outlet cavity 222. The lower housing 242 has an air inlet 248 located away from the cleaning tank 210. The fan unit 231 generates an airflow from upstream to downstream. The heating unit 232 heats the airflow to generate a hot airflow that continues to flow downstream. The hot airflow flows along the air guide channel 244 to the air outlet cavity 222 of the dirt-blocking part 220. The hot airflow flowing to the air outlet cavity 222 finally flows backward from the air outlet 221 on the rear baffle 224 to the cleaning component 110. The hot airflow flowing to the cleaning component 110 dries the cleaning component 110 with hot air, so that the cleaning component 110 can remain dry and fluffy after self-cleaning. The fan unit 231 can adopt an existing vortex fan or similar structure, and the heating unit 232 can adopt an existing heating wire or similar structure. As an alternative to this embodiment, the airflow generating module 230 can also omit the heating unit 232 and only use cold air to dry the cleaning component 110.

[0062] To improve the drying efficiency of the cleaning component 110, the base 20 has upwardly protruding side baffles 245 on both sides, which are formed by the upward protrusion of the upper housing 241 from both sides. The side baffles 245 are set at approximately the same height as the dirt-blocking part 220, and the left and right ends of the dirt-blocking part 220 are respectively connected to the side baffles 245 on the left and right sides to form an integral structure. The side baffles 245 reduce the amount of cold air mixed in from the left and right sides when drying the cleaning component 110, ensuring the drying temperature of the cleaning component 110 by the hot airflow, thereby improving the drying effect of the cleaning component 110. When the airflow generating module 230 dries the cleaning component 110, the fan 510 can also work, using the negative pressure airflow generated by the fan 510 to accelerate the flow speed of the hot airflow, thereby improving the drying efficiency of the cleaning component 110.

[0063] After use, the surface cleaning device 10 is placed on the base 20, with the cleaning component 110 suspended in the cleaning tank 210. The liquid supply component 400 continuously or intermittently supplies cleaning liquid to the cleaning component 110 during its self-cleaning process. The dirt generated by the self-cleaning of the cleaning component 110 can be temporarily stored in the cleaning tank 210. The dirt stored in the cleaning tank 210 is agitated when the cleaning component 110 reciprocates. Because an arc-shaped transition portion 2241 is provided between the rear baffle wall 224 of the dirt-blocking part 220 and the bottom wall of the cleaning tank 210, when the fan 510 operates, it removes the dirt from the cleaning tank 210. When the wastewater is sucked into the wastewater tank 520, the agitated wastewater carries sand and dirt towards the suction port 160. At the same time, the bristles on the outer periphery of the cleaning component 110 can disturb the sand and dirt remaining at the arc-shaped transition section 2241 towards the suction port 160 when the cleaning component 110 rotates. This allows the sand and dirt in the cleaning tank 210 to be basically sucked into the wastewater tank 520, preventing sand and dirt from remaining between the lower end of the rear baffle 224 and the front end of the bottom wall of the cleaning tank 210 after the cleaning component 110 has finished cleaning. This greatly reduces the frequency of manual cleaning of the base 20 by the user and improves the user experience.

[0064] As a feasible solution in this embodiment, the difference between the radius R2 of the arc transition section and the radius R1 of the cleaning component can be set to a reasonable size such as 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc.

[0065] As an alternative to this embodiment, when the surface cleaning device 10 is placed on the base 20, points C and D can also be basically coincident, that is, the arc-shaped transition portion 2241 and the cleaning component 110 are basically concentric. At this time, the radial gap between the arc-shaped transition portion 2241 and the outer surface of the cleaning component 110 is basically consistent from bottom to top.

[0066] Example 2

[0067] Combination Figure 8 , Figure 9In this embodiment, the rear baffle 224 is provided with an upper baffle 251 and a lower baffle 252. The upper baffle 251 protrudes rearward from the inclined wall portion 2242 and is located above the air outlet 221, while the lower baffle 252 protrudes rearward from the arc-shaped transition portion 2241 and is located below the air outlet 221. Furthermore, both the upper baffle 251 and the lower baffle 252 extend in the left-right direction. The length of the upper baffle 251 is greater than the length of the lower baffle 252. The left end of the upper baffle 251 extends to the left beyond the leftmost air outlet 221 and the left end of the lower baffle 252, and the right end of the upper baffle 251 extends to the right beyond the rightmost air outlet 221 and the right end of the lower baffle 252. Thus, both ends of the upper baffle 251 extend beyond the area where the air outlet 221 is located and the lower baffle 252. That is, the lower baffle 252 and all the air outlets 221 are located within the length range of the upper baffle 251. Meanwhile, the left end of the lower baffle 252 extends beyond the leftmost air outlet 221, and the right end of the lower baffle 252 extends beyond the rightmost air outlet 221, so that both ends of the lower baffle 252 extend beyond the area where the air outlet 221 is located. That is, all the air outlets 221 are simultaneously located within the length of the lower baffle 252. The upper baffle 251 has a certain blocking effect on the dirty liquid splashed onto the upper end of the rear baffle 224. The upper baffle 251 prevents the liquid splashed onto the upper end of the rear baffle 224 from flowing into the base 20 through the air outlet 221 when flowing downward, which helps to ensure the performance stability of the electrical components inside the base 20. The lower baffle 252 has a certain blocking effect on the liquid rolled up by the rotating cleaning component 110 in the cleaning tank 210. The lower baffle 252 prevents the rolled-up liquid from flowing into the base 20 through the air outlet 221, which helps to ensure the performance stability of the electrical components inside the base 20.

[0068] To prevent excessive accumulation of liquid blocked by the upper baffle 251, causing it to spread downwards along its surface, the upper baffle 251 is preferably designed to extend diagonally downwards from the center to both ends. This means the upper baffle 251 is configured with an inclined structure, allowing the liquid blocked by it to flow downwards along the inclined structure. The angle α of the upper baffle 251 relative to the horizontal direction can be set to any value between 3° and 5°, i.e., 3°, 3.5°, 4°, 4.5°, 5°, etc. Alternatively, the upper baffle 251 can extend diagonally downwards from left to right or from right to left. As a feasible solution in this embodiment, the upper baffle 251 can be integrally formed with the upper housing 241, or it can be formed separately and then fixed to the upper housing 241.

[0069] To avoid the lower baffle 252 obstructing the rotation of the cleaning component 110, in this embodiment, the lower baffle 252 is preferably made of soft rubber, that is, the lower baffle 252 has a certain degree of elasticity and can deform to a certain extent. The lower baffle 252 can be made of materials such as rubber and silicone, and the lower baffle 252 can be molded separately and then fixed to the lower housing 242.

[0070] As an alternative to this embodiment, the rear baffle 224 may only have an upper baffle 251 protruding rearward, or it may only have a lower baffle 252 protruding rearward.

[0071] The other structures of Embodiment 2 are the same as those of Embodiment 1, and will not be described again here.

[0072] Example 3

[0073] Combination Figure 10 In this embodiment, the bottom wall of the base 20 is provided with a recessed water collection trough 246, the vertical projection of the air outlet 221 falls in the water collection trough 246, and the bottom wall of the water collection trough 246 is provided with a drain hole 247. Figure 10 In the diagram, straight line L5 represents the longitudinal projection plane where the upper end of the air outlet 221 is located, and straight line L6 represents the longitudinal projection plane where the lower end of the air outlet 221 is located. The two longitudinal projection planes shown by straight lines L5 and L6 are located between the front and rear side walls of the water collection tank 246 in the front-back direction. The sewage splashed into the base 20 from the air outlet 221 can fall downward into the water collection tank 246. The sewage that falls into the water collection tank 246 can be discharged in time through the drain hole 247 on the bottom wall, avoiding the sewage splashed into the base 20 from accumulating inside the base 20. This prevents the sewage splashed into the base 20 from spreading to the electrical components inside the base 20 and causing damage to the electrical components when exposed to water, thus ensuring the performance stability of the electrical components inside the base 20.

[0074] Furthermore, the inner surface of the rear baffle 224 is provided with a downwardly extending water baffle 253, which is located behind the air outlet 221, and the vertical projection of the water baffle 253 falls into the water collection trough 246. Figure 10 In the diagram, straight line L7 represents the front surface of the water-retaining edge 253. Line L7 is located behind straight line L6 and lies between the front and rear walls of the water collection tank 246 in the front-rear direction. The water-retaining edge 253 blocks the spilled liquid from the air outlet 221, preventing it from spreading along the inner surface of the rear baffle wall 224 and causing damage to the electrical components inside the base 20. Since the vertical projection of the water-retaining edge 253 falls within the water collection tank 246, the spilled liquid from the air outlet 221 flows downwards along the water-retaining edge 253 and falls into the water collection tank 246. The spilled liquid in the water collection tank 246 can then be discharged promptly through the drain hole 247, preventing the accumulation of spilled liquid inside the base 20.

[0075] Example 3 may be combined with Example 2 or may not be combined with Example 2.

[0076] The other structures of Embodiment 3 are the same as those of Embodiment 1, and will not be described again here.

[0077] Example 4

[0078] Combination Figure 11 In this embodiment, the base 20 is provided with a temperature detection element 260 for detecting the airflow temperature. The temperature signal fed back by the temperature detection element 260 is used to control the heating of the heating unit 232 to avoid the hot airflow temperature being too high or too low.

[0079] To minimize the difference between the temperature signal fed back by the temperature sensing element 260 and the actual drying temperature experienced by the cleaning component 110, the temperature sensing element 260 is positioned as close as possible to the air outlet 221. Specifically, the lower housing 242 of the base 20 has an upwardly protruding boss 249 near the dirt-blocking part 220, and the temperature sensing element 260 is mounted on the boss 249.

[0080] In this embodiment, the temperature sensing element 260 can be an electrical component that meets the temperature sensing requirements, such as a thermocouple or a thermistor.

[0081] Example 4 can be combined with Example 2, or it can be separated from Example 2.

[0082] Embodiment 4 can be combined with Embodiment 3. In this case, the boss 249 is located behind the water collection tank 246 and is positioned as close as possible to the water collection tank 246. Embodiment 4 can also be separate from Embodiment 3. In this case, the front end of the lower housing 242 does not have a water collection tank 246, and the boss 249 can be located inside the air outlet cavity 222 and offset from the air outlet 221 in the front-rear direction.

[0083] The other structures of Embodiment 4 are the same as those of Embodiment 1, and will not be described again here.

[0084] Example 5

[0085] Combination Figure 12 , Figure 13 , Figure 14 In this embodiment, the top side of the dirt-blocking part 220 is provided with a rearwardly extending baffle 270. The rear edge of the baffle 270 falls within the vertical projection range of the arc-shaped transition part 2242, and the rear edge of the baffle 270 is located behind the air outlet 221. The baffle 270 can be formed independently and then fixed to the top side of the dirt-blocking part 220, or the baffle 270 can be integrally formed with the dirt-blocking part 220. Figure 14In the diagram, straight line L8 represents the longitudinal projection plane of the rear edge of the baffle 270. Line L8 is located between the front and rear ends of the arc-shaped transition section 2242 shown at points A and B in the front-back direction, and is also located behind the entire air outlet 221. The baffle 270 acts as a barrier to prevent dirt from being thrown off the cleaning component 110 during self-cleaning, thus preventing it from splashing out of the base 20 and landing on the cleaned ground, improving the user experience. Furthermore, when the airflow generation module dries the cleaning component 110, the baffle 270 guides the airflow, preventing a significant amount of airflow from the air outlet 221 from dissipating through the gap between the cleaning component 110 and the baffle 220, thereby ensuring sufficient airflow to the cleaning component 110 and improving its drying efficiency. Especially when the airflow generating module uses hot air drying, the baffle 270 can prevent the hot airflow from dissipating rapidly, thus avoiding a rapid drop in temperature and improving the hot air drying effect on the cleaning component 110. The rear edge of the baffle 270 falls within the vertical projection range of the arc-shaped transition portion 2241. The reasonable setting of the rearward extension end position of the baffle 270 ensures that it blocks splashed dirt and guides the airflow, while also preventing the baffle 270 from extending too far backward and obstructing the cleaning component 110 from entering the cleaning tank 210.

[0086] Example 5 may be combined with Example 2 or may not be combined with Example 2.

[0087] Example 5 may be combined with Example 3, or it may not be combined with Example 3.

[0088] Example 5 may be combined with Example 4, or it may not be combined with Example 4.

[0089] The other structures of Embodiment 5 are the same as those of Embodiment 1, and will not be described again here.

[0090] In addition to the preferred embodiments described above, there are other embodiments of this utility model. Those skilled in the art can make various changes and modifications based on this utility model. As long as they do not depart from the spirit of this utility model, they should all fall within the scope defined in the claims of this utility model.

Claims

1. A surface cleaning system comprising a surface cleaning device provided with a floor brush, the floor brush being provided with a cleaning element driven by a motor, and a base for placing the surface cleaning device, the base being provided at a front end thereof with a washing tank adapted to the cleaning element and a dirt blocking portion located in front of the washing tank, the base being provided internally with an air flow generating module for providing an air flow for drying the cleaning element, the dirt blocking portion being provided with air outlet holes for blowing the air flow towards the cleaning element, characterized in that, The dirt blocking part comprises a front blocking wall and a rear blocking wall which are arranged at intervals and cooperate to form an air outlet cavity, the lower end of the rear blocking wall is provided with an arc-shaped transition part which is smoothly connected with the bottom wall of the cleaning tank, the radius of the arc-shaped transition part is greater than the radius of the cleaning element, and the air outlet hole is arranged on the rear blocking wall.

2. The surface cleaning system of claim 1, wherein, The lower end of the arc-shaped transition part is tangent to the front end of the bottom wall of the cleaning tank, and / or the rear blocking wall comprises an inclined wall part which extends rearward and downward from top to bottom, and the upper end of the arc-shaped transition part is tangent to the lower end of the inclined wall part.

3. The surface cleaning system of claim 1, wherein, At least part of the air outlet hole is higher than the arc-shaped transition part.

4. The surface cleaning system of claim 1, wherein, The radial gap between the arc-shaped transition part and the outer surface of the cleaning element gradually widens from bottom to top, or the arc-shaped transition part is arranged substantially concentrically with the cleaning element.

5. The surface cleaning system of claim 1, wherein, The rear blocking wall is provided with an upper blocking rib which protrudes rearward and is located above the air outlet hole, the left and right ends of the upper blocking rib are located beyond the air outlet hole, the upper blocking rib extends downward and obliquely from one end to the other end, or the upper blocking rib extends downward and obliquely from the middle to the two ends.

6. A surface cleaning system as claimed in claim 5, wherein, The rear blocking wall is provided with a lower blocking rib which protrudes rearward and is located below the air outlet hole, the left and right ends of the lower blocking rib are located beyond the air outlet hole.

7. A surface cleaning system as claimed in claim 6, wherein, The left and right ends of the upper blocking rib are located beyond the left and right ends of the lower blocking rib, and / or the lower blocking rib is made of soft rubber which has elasticity.

8. The surface cleaning system of claim 1, wherein, The bottom wall of the base is provided with a concave water collecting groove, the vertical projection of the air outlet hole falls within the water collecting groove, and the bottom wall of the water collecting groove is provided with a drain hole.

9. A surface cleaning system as claimed in claim 8, wherein, The rear blocking wall is provided with a water blocking edge which extends downward, the water blocking edge is located rearward of the air outlet hole, and the vertical projection of the water blocking edge falls within the water collecting groove, and / or the airflow generating module is provided with a heating unit, the base is provided with a temperature detecting element which is used for detecting the temperature of the airflow and is arranged close to the water collecting groove.

10. The surface cleaning system of claim 1, wherein, The top side of the dirt blocking part is provided with a blocking edge which extends rearward, the rear edge of the blocking edge is located rearward of the air outlet hole and falls within the vertical projection range of the arc-shaped transition part.

Images