A cleaning device

Abstract

The present application relates to the technical field of cleaning machines, and provides a cleaning device, which comprises a machine body, a clean water tank installed on the machine body and used for storing clean water, a floor brush pivotally connected to the machine body and comprising a main body and a rolling brush installed on the main body and used for cleaning the floor, a fan assembly installed on the main body and used for providing suction force for the cleaning device, a sewage tank installed on the main body and used for recycling sewage generated by the rolling brush, a water pump installed on the main body and connected to the clean water tank, the clean water tank being used for conveying clean water to the rolling brush through the water pump, and a hepa filter assembly installed on the main body and arranged on one side of the fan assembly, the sewage tank being communicated with the fan assembly through the hepa filter assembly. The present application can greatly shorten the length of the air duct of the cleaning device, reduce the weight of the machine body and lower the gravity center of the cleaning device, improve the suction force of the fan assembly for sewage, and make it easier to suck in garbage and more convenient to use.

Description

Technical Field

[0001] This invention relates to the field of cleaning machinery technology, and more specifically to a cleaning device. Background Technology

[0002] As people's living standards improve, cleaning devices have become common appliances for cleaning floors. Currently, most floor cleaning devices on the market typically have their wastewater tanks mounted on the machine body. Wastewater needs to be collected by returning it from the floor brush to the wastewater tank. This structure requires the motor to exert a significant amount of suction power during wastewater collection. Furthermore, over time, dirt and grime can easily accumulate on the pipes, causing blockages and hindering wastewater collection.

[0003] To address these issues, cleaning devices that mount the wastewater tank on the floor brush have been developed. For example, Chinese invention patent CN113749581A, published on December 7, 2021, entitled "A Floor Cleaning Device," shortens the wastewater collection path by mounting the wastewater tank on the floor brush, allowing for rapid collection. However, this structure, where the wastewater tank is mounted on the brush and the motor on the body, results in a low negative pressure on the wastewater tank. This leads to insufficient suction, preventing all wastewater from being drawn into the tank and leaving residue on the floor. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a cleaning device that can shorten the length of the air duct and increase the suction power.

[0005] To address the above problems, the present invention provides the following technical solution:

[0006] A cleaning device comprising:

[0007] body;

[0008] A clean water tank is installed on the machine body and is used to store clean water.

[0009] A floor brush, pivotally connected to the body, the floor brush comprising a main body and a roller brush mounted on the main body for cleaning the floor;

[0010] A fan assembly, mounted on the main body, is used to provide suction for the cleaning device;

[0011] A wastewater tank, installed on the main body, is used to recycle the wastewater generated by the roller brush;

[0012] A water pump is installed on the main body and connected to the clean water tank, and the clean water tank delivers clean water to the roller brush through the water pump.

[0013] The HEPA filter assembly is installed on the main body and located on one side of the blower assembly, and the wastewater tank is connected to the blower assembly through the HEPA filter assembly.

[0014] In one embodiment, the wastewater tank includes a first housing, a second housing, and a third housing;

[0015] The first housing includes a sewage chamber for holding sewage and a water inlet disposed on one side of the sewage chamber;

[0016] The second housing includes a first air intake communicating with the water inlet and a second air intake communicating with the HEPA filter assembly;

[0017] When the second housing is placed over the first housing and the third housing is placed over the second housing, a first air intake channel is formed inside the sewage tank. The first air intake channel passes through the water inlet, through the first air intake, and connects to the second air intake.

[0018] In one embodiment, the wind turbine assembly includes a main motor and a housing for mounting the main motor;

[0019] The main motor includes a third receiving cavity, a motor drive unit installed in the third receiving cavity, a rotating shaft protruding from the motor drive unit to both sides, and a first impeller and a second impeller installed at both ends of the rotating shaft.

[0020] The housing includes a fourth receiving cavity separated from the third receiving cavity, a third air intake connected to the HEPA filter assembly, and a first air outlet connected to the fourth receiving cavity. The third air intake is connected to the first air outlet through the fourth receiving cavity to form a second air intake channel.

[0021] One end of the rotating shaft extends into the fourth receiving cavity so that the first impeller is installed in the fourth receiving cavity, and the second impeller is installed in the third receiving cavity;

[0022] The housing also includes a fourth air intake connected to the third receiving cavity and a second air outlet connected to the third receiving cavity; the fourth air intake is connected to the second air outlet through the third receiving cavity to form a heat dissipation channel.

[0023] In one embodiment, the HEPA filter assembly includes a lower HEPA shell attached to the housing, an upper HEPA shell pivotally connected to the lower HEPA shell, and HEPA filter cotton sandwiched between the lower HEPA shell and the upper HEPA shell.

[0024] The HEPA filter cotton is arranged in a ring shape with a hollow area in the middle, and the third air intake is arranged opposite to the hollow area of ​​the HEPA filter cotton.

[0025] In one embodiment, the fan assembly includes a partition installed between the main motor and the housing, one end of the partition surrounding the third air inlet, and the other end abutting against the inner sidewall of the housing parallel to the third air inlet.

[0026] The fan assembly includes a first sealing ring installed between the third air inlet and the partition, a second sealing ring installed at the junction of the partition and the inner wall of the housing, a third sealing ring installed between the main motor and the housing, and a fourth sealing ring installed between the main motor and the partition.

[0027] The third sealing ring is close to the fourth air intake, and the fourth sealing ring is close to the third air intake.

[0028] In one embodiment, the first air intake is disposed on one side of the second housing along both the first and second directions, and the second air intake is disposed diagonally opposite the first air intake.

[0029] The water inlet is located on one side of the sewage tank along the second direction, and the water inlet is located in the center of one side of the sewage tank along the first direction and is located on one side of the first air intake.

[0030] The first air intake is disposed at the top of the second housing along a third direction, and the water inlet and the second air intake are disposed on the same horizontal plane along a third direction;

[0031] The first direction, the second direction, and the third direction are all perpendicular to each other.

[0032] In one embodiment, the wastewater tank includes a filter screen installed in the second housing, and the filter screen is installed in the first air intake along a third direction;

[0033] The second housing has a baffle plate protruding in a third direction toward the sewage chamber, and the baffle plate is located between the water inlet and the first air intake.

[0034] In one embodiment, the floor brush includes a water spray valve mounted on one side of the roller brush along a second direction, the water spray valve being connected to the water pump;

[0035] The water spray valve is evenly provided with multiple nozzles, and each of the multiple nozzles is arranged opposite to the roller brush.

[0036] In one embodiment, the wastewater tank further includes a wastewater outlet disposed on one side of the roller brush, the wastewater outlet being disposed at the lower end of the spray valve along a third direction, and the wastewater outlet being connected to the water inlet to form a water inlet channel;

[0037] The diameter of the sewage outlet gradually increases along the second direction towards the side of the roller brush.

[0038] In one embodiment, the water inlet channel is connected to the first air intake channel, and the first air intake channel passes through the filter screen and the HEPA filter cotton and is connected to the second air intake channel.

[0039] The beneficial effects of this invention are as follows: By installing the wastewater tank, HEPA filter assembly, and blower assembly all on the floor brush, the overall air duct length of the cleaning device can be significantly shortened, the weight of the device can be reduced, and the center of gravity of the cleaning device can be lowered. This shortens the distance the airflow in the wastewater tank travels through the HEPA filter assembly to the blower assembly, thereby increasing the blower assembly's ability to adsorb wastewater and making it easier to suck up debris. This allows the cleaning device to have a longer operating time, a larger cleaning area, and fewer charging cycles with the same battery capacity. In addition, the HEPA filter assembly is independently installed on one side of the blower assembly, thus enabling independent disassembly, cleaning, and replacement of the HEPA filter assembly. The overall structure is simple and easy to disassemble and clean, while also allowing for a larger volume of the HEPA filter cotton, thereby improving the filtration effect. Attached Figure Description

[0040] Figure 1 This is a perspective view of one embodiment of a cleaning device according to the present invention;

[0041] Figure 2 for Figure 1 A schematic diagram of the structure of one embodiment of the mid-fuselage;

[0042] Figure 3 for Figure 1 A schematic diagram of the structure of one embodiment of a floor brush;

[0043] Figure 4 for Figure 1 An exploded view of one embodiment of a floor brush;

[0044] Figure 5 for Figure 1 A top view of one embodiment of a ground brush;

[0045] Figure 6 for Figure 3 A cross-sectional view of one embodiment of a ground brush;

[0046] Figure 7 for Figure 3 A cross-sectional view of one embodiment of the blower assembly and the HEPA filter assembly;

[0047] Figure 8 for Figure 3 An exploded view of one embodiment of a mid-wind turbine assembly;

[0048] Figure 9 for Figure 3An exploded view of one embodiment of a wastewater tank;

[0049] Figure 10 for Figure 3 An exploded view of another embodiment of the wastewater tank;

[0050] Figure 11 for Figure 3 An exploded view of one embodiment of the HEPA filter assembly;

[0051] Figure 12 for Figure 3 An exploded view of one embodiment of the medium roller brush;

[0052] Figure 13 for Figure 3 A schematic diagram of one embodiment of a medium roller brush.

[0053] Figure label:

[0054] 100. Cleaning equipment;

[0055] 1. Fuselage;

[0056] 2. Handle;

[0057] 3. Clean water tank;

[0058] 4. Water pump; 41. Diversion pipe;

[0059] 5. Floor brush; 50. Main body; 51. Roller brush; 501. Intermediate shell; 502. Pivot shell; 55. Spray valve; 511. Nozzle; 52. Roller; 53. Abutment part; 54. Drive motor;

[0060] 6. Fan assembly; 61. Main motor; 62. Housing; 60a. Third receiving cavity; 611. Motor drive component; 612. Rotating shaft; 613. First impeller; 614. Second impeller; 61a. Fourth receiving cavity; 61b. Third air intake; 62b. Fourth air intake; 61c. First air outlet; 62c. Second air outlet; 61d. Second air intake channel; 62d. Heat dissipation channel; 62a. Opening; 63. Partition; 64. First sealing ring; 65. Second sealing ring; 66. Third sealing ring; 67. Fourth sealing ring;

[0061] 7. Wastewater tank; 71. First shell; 72. Second shell; 73. Third shell; 70a. Wastewater chamber; 71b. Water inlet; 72b. First air intake; 73b. Second air intake; 70d. First air intake channel; 74b. Wastewater outlet; 71d. Water inlet channel; 74. Filter screen; 75. Water baffle;

[0062] 8. HEPA filter assembly; 81. HEPA lower housing; 82. HEPA upper housing; 83. HEPA filter cotton; 821. Knob; 83a. Hollow area;

[0063] 9. Battery. Detailed Implementation

[0064] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0066] For ease of description of the first, second, and third directions in the embodiments of this application, the first direction is the left-right direction in the figures, the second direction is the front-back direction in the figures, and the third direction is the up-down direction in the figures. The x-axis arrow direction is referred to as the "right" direction, the y-axis arrow direction as the "back" direction, and the z-axis arrow direction as the "up" direction, but these are not the sole limitations in the actual application of this application.

[0067] Please refer to Figure 1-6 and Figure 12As shown, this embodiment provides a cleaning device 100, which includes: a body 1 and a handle 2 installed at one end of the body 1 for holding; it also includes a clean water tank 3 installed on the body 1, a water pump 4, and a battery 9 installed on the top of the clean water tank 3. The battery 9 is used to store electrical energy and to power the fan assembly 6; further, the clean water tank 3 is used to store clean water, and the water pump 4 is connected to the clean water tank 3 to transport the clean water. Furthermore, the cleaning device 100 also includes a floor brush 5 pivotally connected to the body 1. The floor brush 5 includes a main body 50 and a roller brush 51 installed on the main body 50. The cleaning device 100 also includes a fan assembly 6 and a wastewater tank 7. The fan assembly 6 provides suction to the cleaning device 100. The floor brush 5 also includes a drive motor 54 installed on one side of the roller brush 51 along a second direction. The drive motor 54 is electrically connected to the battery 9 to power the roller brush 51 and make it rotate. The clean water tank 3 delivers clean water to the roller brush 51 through a water pump 4. The suction motor draws the wastewater generated by the roller brush 51 into the wastewater tank 7 for recycling. Furthermore, the cleaning device 100 also includes a HEPA filter assembly 8 installed on the main body 50. The HEPA filter assembly 8 is located on one side of the fan assembly 6 along a first direction. The wastewater tank 7 is connected to the fan assembly 6 through the HEPA filter assembly 8 so that the airflow entering the motor is filtered.

[0068] Please refer to Figure 3-5 As shown, optionally, the main body 50 includes an intermediate shell 501 for loading the sewage tank 7 and the HEPA filter assembly 8 and a pivot shell 502 for housing the blower assembly 6; the roller brush 51 is disposed on one side of the intermediate shell 501 along the second direction.

[0069] Please refer to Figure 3-5As shown in Figures 7 and 11, in this embodiment, the HEPA filter assembly 8 is separate from and connected to the wastewater tank 7, allowing the HEPA filter assembly 8 to be independently installed on one side of the blower assembly 6. This enables independent disassembly, cleaning, and replacement, replacing the traditional structure where the HEPA filter assembly 8 is installed inside the wastewater tank 7. This avoids the need to remove the HEPA filter assembly 8 when treating wastewater in the wastewater tank 7. Furthermore, the HEPA filter assembly 8 includes a lower HEPA shell 81, an upper HEPA shell 82 pivotally connected to the lower HEPA shell 81, and HEPA filter cotton 83 sandwiched between the lower HEPA shell 81 and the upper HEPA shell 82. The upper HEPA shell 82 is equipped with a rotatable knob 821. By rotating the knob 821, the tightness between the upper HEPA shell 82 and the lower HEPA shell 81 can be adjusted to tighten the HEPA filter assembly 8 or loosen the upper HEPA shell 82 to remove the HEPA filter cotton 83 for cleaning. This simplifies the disassembly and assembly of the HEPA filter assembly 8, and the overall structure is simple and convenient to disassemble. Cleaning is achieved through a combination of methods. Furthermore, since the wastewater tank 7 is mounted on the floor brush 5, the traditional HEPA filter assembly 8, installed within the wastewater tank 7, has limited space on the floor brush 5, making it difficult to increase the volume of the HEPA filter cotton 83. This embodiment, by independently installing the HEPA filter assembly 8, allows for a larger volume of the HEPA filter cotton 83, thereby improving the filtration effect. Additionally, in this embodiment, the wastewater tank 7, HEPA filter assembly 8, and blower assembly 6 of the cleaning device 100 are all mounted on the floor brush 5, significantly shortening the overall air duct length of the cleaning device 100, reducing the weight of the body 1, and lowering the center of gravity of the cleaning device 100. This enhances the suction power of the blower assembly 6, making it easier to suck up debris. This allows the cleaning device 100 to operate for a longer time, clean a larger area, and reduce the number of charging cycles with the same battery capacity 9, making it easier and more convenient to use. The body 1 can rotate 180 degrees horizontally with the floor brush 5 to clean low areas such as under beds and sofas.

[0070] Please refer to Figure 3-6 , Figure 9-10As shown, preferably, the sewage tank 7 includes a first shell 71, a second shell 72, and a third shell 73; the first shell 71 includes a sewage cavity 70a for holding sewage and an inlet 71b disposed on one side of the sewage cavity 70a along a second direction. The opening of the sewage cavity 70a is configured as an open structure. The first shell 71 protrudes from one side of the sewage cavity 70a toward the center of the opening of the sewage cavity 70a to form an inlet pipe. The inlet 71b is disposed at the end of the inlet pipe and is flush with the opening of the sewage cavity 70a. This structure allows as much sewage as possible to flow into the sewage cavity 70a through the inlet 71b, preventing the inlet 71b from being lower than the sewage cavity 70a and causing sewage overflow; further, the second shell... The body 72 includes a first air intake 72b communicating with the water inlet 71b and a second air intake 73b communicating with the HEPA filter assembly 8's upper shell 82. When the second shell 72 is installed over the first shell 71 along a third direction and the third shell 73 is installed over the second shell 72 along a third direction, a first air intake channel 70d is formed inside the sewage tank 7. The first air intake channel 70d passes from the water inlet 71b through the first air intake 72b and connects to the second air intake 73b. It can be understood that this structure is designed so that the first air intake channel 70d is designed entirely within the sewage tank 7, which shortens the distance the airflow in the sewage tank 7 travels through the HEPA filter assembly 8 to the blower assembly 6, making it less likely to cause blockage and making it easier to suck in garbage.

[0071] Please refer to Figure 3-6 , Figure 9-10As shown, specifically, the fan assembly 6 includes a main motor 61 and a housing 62 for mounting the main motor 61. In this embodiment, the HEPA lower housing 81 is attached to one side of the housing 62 along the first direction. Further, the main motor 61 includes a third receiving cavity 60a, a motor drive 611 installed in the third receiving cavity 60a, a rotating shaft 612 protruding from the motor drive 611 to both sides, and a first impeller 613 and a second impeller 614 installed at both ends of the rotating shaft 612 along the first direction. The housing 62 includes a fourth receiving cavity 61a separated from the third receiving cavity 60a, a third air intake 61b connected to the HEPA filter assembly 8, and a first air outlet 61c connected to the fourth receiving cavity 61a. Air vent 61b connects to the first air outlet 61c via the fourth receiving cavity 61a to form the second air intake channel 61d. In this embodiment, the HEPA filter cotton 83 is arranged in a ring shape with a hollow region 83a in the middle. By aligning the hollow region 83a of the HEPA filter cotton 83 with the third air intake vent 61b along the first direction, and clamping the HEPA filter cotton 83 with the upper and lower shells 82 and 81 along the first direction, the airflow and particles from the first air intake channel 70d in the sewage tank 7 can only pass through the outer wall of the HEPA filter assembly 8 to reach the hollow region 83a before entering the housing 62, thus achieving the purification of the airflow within the first air intake channel 70d. The airflow and particulate matter are deeply filtered to ensure that debris or particulate matter floating in the airflow is not sucked into the housing 62. Furthermore, one end of the rotating shaft 612 extends into the fourth receiving cavity 61a so that the first impeller 613 is installed in the fourth receiving cavity 61a and the second impeller 614 is installed in the third receiving cavity 60a. The rotating shaft 612 is driven to rotate by the motor drive 611, thereby driving the first impeller 613 to rotate, so that the main motor 61 provides suction to the first suction channel 70d. Furthermore, the third receiving cavity 60a and the fourth receiving cavity 61a are separated, so that the airflow in the first suction channel 70d, after passing through the third suction port 61b and entering the housing 62, directly passes through the first impeller 613. The fan blades spread out toward the inner wall of the housing 62, and then pass through the second air intake channel 61d before being discharged outward from the first air outlet 61c. This structure prevents the airflow drawn into the housing 62 from the first air intake channel 70d from entering the third receiving cavity 60a, thus avoiding the impact of the high humidity and fine particles in the airflow in the first air intake channel 70d on the motor drive unit 611 in the third receiving cavity 60a. In addition, the fourth air intake 62b and the second air outlet 62c are both located on the other side of the floor brush 5 away from the HEPA filter assembly 8 along the first direction, and the fourth air intake 62b is connected to the motor drive unit 611, which has an opening 62a that connects to the third receiving cavity 60a.This structure creates a heat dissipation channel 62d within the housing 62, connecting the fourth air intake 62b to the second air outlet 62c. Cool airflow is drawn into the motor drive unit 611 by the rotation of the second impeller 614, thus dissipating heat from the motor drive unit 611. The cool airflow acting on the motor drive unit 611 becomes hot airflow, passes through the opening 62a, enters the third receiving cavity 60a, and then flows out from the second air outlet 62c, carrying away the heat generated during the rotation of the motor drive unit 611.

[0072] Please refer to Figure 7-8 As shown, specifically, the fan assembly 6 includes a partition 63 installed between the main motor 61 and the housing 62. According to the above scheme, the third receiving cavity 60a and the fourth receiving cavity 61a are separated by one end of the partition 63 surrounding the third air inlet 61b and the other end abutting against the inner wall of the housing 62 parallel to the third air inlet 61b. In addition, the fan assembly 6 also includes a first sealing ring 64 installed between the third air inlet 61b and the partition 63, and a second sealing ring 65 installed at the abutment of the partition 63 against the inner wall of the housing 62. A third sealing ring 66 is installed between the main motor 61 and the housing 62, and a fourth sealing ring 67 is installed between the main motor 61 and the partition 63. The third sealing ring 66 is close to the fourth air intake 62b, and the fourth sealing ring 67 is close to the third air intake 61b. This structure seals the connection between the partition 63 and the housing 62 and the main motor 61 by setting multiple sealing rings, ensuring the independence of the third receiving cavity 60a and the fourth receiving cavity 61a, thereby forming two independent air ducts in the housing 62 of the blower assembly 6. It can be understood that the second air intake channel 61d is the main air duct leading to the first air intake channel 70d in the sewage tank 7, and the other heat dissipation channel 62d is the air duct for heat dissipation of the motor drive component 611. The two are independent of each other and do not affect each other, avoiding the diversion of the heat dissipation channel 62d to the second air intake channel 61d, and improving the suction force of the second air intake channel 61d to the first air intake channel 70d. Furthermore, by mounting the motor on the floor brush 5, the airflow in the second suction channel 61d is positioned lower when it is discharged from the first air outlet 61c, preventing the airflow from blowing upwards and thus carrying moisture or fine particles of dirt into the air, which plays an environmental protection role in the cleaning process. In addition, the heat dissipation channel 62d removes the heat from the main motor 61, thereby cooling the main motor 61 and extending its service life.

[0073] Please refer to Figure 2 , 12As shown in Figure -13, preferably, the floor brush 5 includes a water spray valve 55 installed along the second direction on one side of the roller brush 51. The water pump 4 is connected to the water spray valve 55 through a guide pipe 41 for conveying clean water. The water spray valve 55 is provided with a plurality of nozzles 511 evenly arranged along the first direction. The plurality of nozzles 511 are all arranged opposite to the roller brush 51. Clean water is sprayed onto the roller brush 51 through the water spray valve 55. The bottom of the floor brush 5 is provided with a roller 52. The roller brush 51 is driven by a drive motor 54 to rotate, so that the floor brush 5 cleans the ground as it moves after the roller 52 rotates. Further, the floor brush 5 also includes an abutment member 53 that abuts against one side of the roller brush 51 and is used to squeeze the sewage inside the roller brush 51. The sewage tank 7 also includes a... On one side of the roller brush 51, there is a wastewater outlet 74b, which is located at the lower end of the spray valve 55 along a third direction. The wastewater outlet 74b is connected to the water inlet 71b to form a water inlet channel 71d. The structure is such that when the roller brush 51 cleans the ground during rotation, the wastewater generated by the cleaning on the roller brush 51 is squeezed out by the pressure of the abutment member 53 and flows into the wastewater outlet 74b, and enters the wastewater chamber 70a through the water inlet channel 71d. In addition, the diameter of the wastewater outlet 74b gradually increases along the second direction towards the roller brush 51, so that the maximum diameter of the wastewater outlet 74b is equal to the length of the roller brush 51 along the first direction, thereby allowing all the wastewater generated by the roller brush 51 to be sucked into the wastewater tank 7, ensuring that the cleaned ground is clean and tidy.

[0074] Please refer to Figure 3-7 , Figure 9-11As shown, specifically, the wastewater tank 7 includes a filter screen 74 installed on the second housing 72, and the filter screen 74 is installed in the third direction at the first air intake 72b. Furthermore, a baffle plate 75 protrudes from the second housing 72 in the third direction toward the wastewater chamber 70a. The baffle plate 75 is located between the inlet 71b and the first air intake 72b. This structure allows the baffle plate 75 on the inlet 71b side to block wastewater and small debris such as hair when it is drawn into the wastewater chamber 70a from the inlet 71b, preventing dirt from being directly sucked from the wastewater outlet 74b to the first air intake 72b and falling into the bottom of the wastewater chamber 70a. The filter screen 74 also blocks debris in the wastewater chamber 70a, preventing larger pieces of dirt and hair from falling into the bottom of the chamber. Waste such as hair enters the first suction channel 70d; in this embodiment, the water inlet channel 71d is connected to the first suction channel 70d, and the first suction channel 70d passes through the filter screen 74 and the HEPA filter cotton 83 and connects to the second suction channel 61d, ultimately realizing a complete air duct structure from the first air outlet 61c to the sewage outlet 74b. This air duct structure performs double filtration of waste in the airflow through the filter screen 74 and the HEPA filter cotton 83; furthermore, the first air inlet 72b is located on one side of the second housing 72 along both the first and second directions, and the second air inlet 73b is located diagonally opposite the first air inlet 72b; furthermore, the water inlet 71b is located on one side of the sewage tank 7 along the second direction, and the water inlet 71b The first suction channel 70d is positioned at the center of one side of the sewage tank 7 and on one side of the first suction port 72b. Furthermore, the first suction port 72b is positioned at the top of the second housing 72 along a third direction, and the inlet 71b and the second suction port 73b are positioned on the same horizontal plane along a third direction. By setting the first suction channel 70d in a twisted shape, when the motor drive 611 drives the first impeller 613 to rotate, sewage is sucked into the sewage chamber 70a. At this time, the airflow generated by the suction moves towards the inlet 71b side. Since the baffle plate 75 is positioned on one side of the inlet 71b, some lighter debris easily moves towards the first suction channel 70d with the airflow. This structure, through the cooperation of the baffle plate 75, effectively controls the movement of this debris. By partially blocking the debris, the first air intake 72b of the first air intake channel 70d is less likely to be blocked. This prevents debris from adhering to the filter screen 74 and causing blockage of the first air intake channel 70d. At the same time, it allows small particles or fine debris that are not filtered by the filter screen 74 to enter the first air intake channel 70d to adhere to the side wall of the second housing 72 or the third housing 73 when passing through the twisted channel, thus preventing blockage of the second air intake 73b. This structure allows the main motor 61 to use a lower power of 50-100W to successfully suck up debris, ultimately increasing the single-use time of the cleaning device 100, avoiding frequent cleaning of the wastewater tank 7, reducing the number of charging cycles, and simplifying the maintenance of the cleaning device 100.

[0075] In summary, this invention provides a cleaning device that significantly shortens the overall air duct length, reduces the weight of the device, and lowers the center of gravity by mounting the wastewater tank, HEPA filter assembly, and blower assembly all on a floor brush. This shortens the distance the airflow in the wastewater tank travels through the HEPA filter assembly to the blower assembly, enhancing the blower assembly's ability to adsorb wastewater and making it easier to suck up debris. This results in a longer operating time, a larger cleaning area, and fewer charging cycles with the same battery capacity. Furthermore, the HEPA filter assembly is independently installed on one side of the blower assembly, allowing for independent disassembly, cleaning, and replacement. The overall structure is simple and easy to disassemble and clean, while also allowing for larger volumes of the HEPA filter cotton, thereby improving the filtration effect.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A cleaning device, characterized in that, include: body; A clean water tank is installed on the machine body and is used to store clean water. A floor brush, pivotally connected to the body, the floor brush comprising a main body and a roller brush mounted on the main body for cleaning the floor; A fan assembly, mounted on the main body, is used to provide suction for the cleaning device; A wastewater tank, installed on the main body, is used to recycle the wastewater generated by the roller brush; A water pump is installed on the main body and connected to the clean water tank, and the clean water tank delivers clean water to the roller brush through the water pump. The HEPA filter assembly is installed on the main body and located on one side of the blower assembly, and the wastewater tank is connected to the blower assembly through the HEPA filter assembly; The wastewater tank includes a first shell, a second shell, and a third shell; The first housing includes a sewage chamber for holding sewage and a water inlet disposed on one side of the sewage chamber; The second housing includes a first air intake communicating with the water inlet and a second air intake communicating with the HEPA filter assembly; When the second housing is placed over the first housing and the third housing is placed over the second housing, a first air intake channel is formed inside the sewage tank. The first air intake channel passes through the water inlet, through the first air intake, and connects to the second air intake. The wind turbine assembly includes a main motor and a housing that mounts the main motor; The main motor includes a third receiving cavity, a motor drive unit installed in the third receiving cavity, a rotating shaft protruding from the motor drive unit to both sides, and a first impeller and a second impeller installed at both ends of the rotating shaft. The housing includes a fourth receiving cavity separated from the third receiving cavity, a third air intake connected to the HEPA filter assembly, and a first air outlet connected to the fourth receiving cavity. The third air intake is connected to the first air outlet through the fourth receiving cavity to form a second air intake channel. One end of the rotating shaft extends into the fourth receiving cavity so that the first impeller is installed in the fourth receiving cavity, and the second impeller is installed in the third receiving cavity; The housing also includes a fourth air intake connected to the third receiving cavity and a second air outlet connected to the third receiving cavity; the fourth air intake and the second air outlet are both arranged along the first direction on the other side of the floor brush away from the HEPA filter assembly, and the fourth air intake is connected to the motor drive component, which has an opening connected to the third receiving cavity. The fourth air intake is connected to the second air outlet through the third receiving cavity to form a heat dissipation channel; The HEPA filter assembly includes a lower HEPA shell attached to the housing, an upper HEPA shell pivotally connected to the lower HEPA shell, and HEPA filter cotton sandwiched between the lower HEPA shell and the upper HEPA shell. The HEPA filter cotton is arranged in a ring shape with a hollow area in the middle, and the third air intake is arranged opposite to the hollow area of ​​the HEPA filter cotton.

2. The cleaning device according to claim 1, characterized in that: The fan assembly includes a partition installed between the main motor and the housing. One end of the partition surrounds the third air inlet, and the other end abuts against the inner side wall of the housing parallel to the third air inlet. The fan assembly includes a first sealing ring installed between the third air inlet and the partition, a second sealing ring installed at the junction of the partition and the inner wall of the housing, a third sealing ring installed between the main motor and the housing, and a fourth sealing ring installed between the main motor and the partition. The third sealing ring is close to the fourth air intake, and the fourth sealing ring is close to the third air intake.

3. The cleaning device according to claim 1, characterized in that: The first air intake is disposed on one side of the second housing along both the first and second directions, and the second air intake is disposed diagonally opposite the first air intake. The water inlet is located on one side of the sewage tank along the second direction, and the water inlet is located in the center of one side of the sewage tank along the first direction and is located on one side of the first air intake. The first air intake is disposed at the top of the second housing along a third direction, and the water inlet and the second air intake are disposed on the same horizontal plane along a third direction; The first direction, the second direction, and the third direction are all perpendicular to each other.

4. A cleaning device according to claim 3, characterized in that: The wastewater tank includes a filter screen installed in the second housing, and the filter screen is installed in the first air intake along a third direction; The second housing has a baffle plate protruding in a third direction toward the sewage chamber, and the baffle plate is located between the water inlet and the first air intake.

5. A cleaning device according to claim 4, characterized in that: The floor brush includes a water spray valve installed on one side of the roller brush along the second direction, and the water spray valve is connected to the water pump; The water spray valve is evenly provided with multiple nozzles, and each of the multiple nozzles is arranged opposite to the roller brush.

6. A cleaning device according to claim 5, characterized in that: The wastewater tank also includes a wastewater outlet located on one side of the roller brush. The wastewater outlet is located at the lower end of the spray valve along a third direction. The wastewater outlet is connected to the water inlet to form a water inlet channel. The diameter of the sewage outlet gradually increases along the second direction towards the side of the roller brush.

7. A cleaning device according to claim 6, characterized in that: The water inlet channel is connected to the first air intake channel, and the first air intake channel passes through the filter screen and the HEPA filter cotton and is connected to the second air intake channel.

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