Fan and cleaning equipment

Abstract

The embodiment of the utility model discloses a fan and cleaning equipment, and the fan comprises a main body which is provided with an air inlet and an air outlet; a cavity used for containing the main body is formed in the shell, and the shell is provided with an exhaust outlet communicated with the air outlet; the double-air-duct assembly is arranged adjacent to the shell and comprises a first air duct and a second air duct; the rotary switching valve is arranged between the double-air-duct assembly and the main body and used for selectively communicating one of the first air duct and the second air duct with the air inlet and communicating the other one of the first air duct and the second air duct with the air outlet through the rotary motion of the rotary switching valve; and the rotation axis of the rotary switching valve coincides with the axis of the air inlet of the main body. According to the scheme provided by the embodiment of the invention, the switching of the air path and the air direction of the fan can be realized by adopting one fan, and the space occupied by the fan is saved.

Description

Technical Field

[0001] This application relates to the field of smart home technology, and more particularly to a fan and cleaning equipment. Background Technology

[0002] The emergence of intelligent cleaning equipment has greatly facilitated people's lives. Examples include floor scrubbers, vacuum cleaners, and sweepers. Typical intelligent cleaning equipment has dust removal and wastewater discharge modes. Wastewater discharge generally occurs in three ways: by gravity, by flushing with water from a tank, and by fan pressure. Gravity-based discharge is slow, and using water from a tank to accelerate discharge wastewater wastes water. Using fan pressure to accelerate discharge is undoubtedly the optimal solution. However, since the fan's airflow direction is fixed, current intelligent cleaning equipment that can automatically perform both suction and discharge generally requires two fans, which occupies considerable space and increases the overall cost.

[0003] Therefore, there is a need to provide an improved wind turbine structure to at least partially solve the above problems. Utility Model Content

[0004] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, according to a first aspect of the present invention, a fan is provided, comprising:

[0006] The main body has an air inlet and an air outlet;

[0007] The outer casing has a cavity for accommodating the main body, and the outer casing has an exhaust port communicating with the air outlet;

[0008] A dual-duct assembly, disposed adjacent to the housing, includes a first duct and a second duct; and

[0009] A rotary switching valve is disposed between the dual-duct assembly and the main body, and is used to selectively connect one of the first duct and the second duct to the air inlet and the other to the air outlet through its own rotational movement.

[0010] The rotation axis of the rotary switching valve coincides with the axis of the air inlet of the main body.

[0011] Preferably, the rotary switching valve is provided with a valve plate air inlet and a valve plate air outlet, the valve plate air inlet being closer to the rotation axis than the valve plate air outlet; wherein, the valve plate air inlet is connected to the air inlet, and the valve plate air outlet is connected to the air outlet; wherein, the first air duct is connected to the air inlet through the valve plate air inlet, and the second air duct is connected to the air outlet through the valve plate air outlet; or the second air duct is connected to the air inlet through the valve plate air inlet, and the first air duct is connected to the air outlet through the valve plate air outlet.

[0012] Preferably, the rotary switching valve includes a first valve plate and a second valve plate, wherein the first valve plate and the valve plate air intake are located on the same circumference, and the second valve plate and the valve plate air outlet are located on the same circumference;

[0013] Wherein, when the first air duct is connected to the air inlet and the second air duct is connected to the air outlet, the first valve plate blocks the connection between the second air duct and the air inlet, and the second valve plate blocks the connection between the first air duct and the air outlet; or

[0014] When the second air duct is connected to the air inlet and the first air duct is connected to the air outlet, the first valve plate blocks the connection between the first air duct and the air inlet, and the second valve plate blocks the connection between the second air duct and the air outlet.

[0015] Preferably, the circumference of the second valve plate is located outside the circumference of the first valve plate; wherein,

[0016] The valve plate's air intake is configured as a fan shape passing through the rotation axis of the rotary switching valve, and the valve plate's air outlet is configured as a fan-shaped annulus.

[0017] Preferably, a porous array is provided at one end of the housing near the rotary switching valve, and the porous array forms part of the exhaust port;

[0018] In this configuration, a portion of the porous array is blocked by the second valve plate, while the remaining portion of the porous array is connected to either the first or the second air duct through the air outlet of the valve plate.

[0019] Preferably, it also includes a drive assembly disposed on the housing and adjacent to the rotary switching valve; wherein the drive assembly is throttle-connected to the rotary switching valve and is used to drive the rotary switching valve to rotate, so as to connect the air inlet of the fan to the first air duct or the second air duct through the rotation of the rotary switching valve.

[0020] Preferably, the outer wall of the rotary switching valve is provided with an external gear;

[0021] The drive assembly includes a drive motor and a drive gear set. The drive motor is connected to the drive gear set, and the drive gear set meshes with an external gear on the outer wall of the rotary switching valve.

[0022] Preferably, the dual-duct assembly is provided with a rotating shaft, and the rotating switching valve is sleeved on the rotating shaft; wherein, a bearing is also sleeved on the rotating shaft, the inner ring of the bearing is connected to the rotating shaft, and the outer ring of the bearing is connected to the rotating switching valve.

[0023] Preferably, it also includes a seal disposed between the rotary switching valve and the dual-duct assembly.

[0024] According to a second aspect of the present invention, a cleaning device is provided, the cleaning device including a controller, a blower and a wastewater tank, the blower including a dual-duct assembly, a rotary switching valve and a drive assembly, the first duct of the dual-duct assembly being connected to the wastewater tank, the second duct of the dual-duct assembly being connected to the outside atmosphere, the drive assembly being drivenly connected to the rotary switching valve, and the controller being communicatively connected to the drive assembly.

[0025] The controller is used to detect the working mode of the cleaning equipment and control the drive component to work according to the working mode, so as to drive the rotary switching valve to rotate to a preset position, so that the air inlet of the fan is connected to one of the first air duct and the second air duct, and the air outlet of the fan is connected to the other of the first air duct and the second air duct.

[0026] Preferably, the working mode includes a cleaning mode and a sewage discharge mode;

[0027] When the working mode is cleaning mode, the controller is used to control the drive component to drive the rotary switching valve to rotate to the first position, so that the air inlet of the fan is connected to the first air duct and the air outlet of the fan is connected to the second air duct.

[0028] When the working mode is the sewage discharge mode, the controller is used to control the drive component to drive the rotary switching valve to rotate to the second position, so that the air inlet of the fan is connected to the second air duct and the air outlet of the fan is connected to the first air duct.

[0029] The fan and cleaning equipment provided in the embodiments of this specification have the following technical effects:

[0030] The fan provided in this specification includes a main body, a housing for fixing and accommodating the main body, a dual-duct assembly, and a rotary switching valve. The dual-duct assembly includes two ducts: a first duct and a second duct. The rotary switching valve is located between the dual-duct assembly and the main body. By rotating the valve, one of the first and second ducts can be connected to the fan's air inlet, while the other duct is connected to the fan's exhaust outlet. This allows for two airflow directions: either air enters the air inlet through the first duct and exits through the second duct, or air enters the air inlet through the second duct and exits through the first duct. A single fan can change the airflow direction, saving space and providing technical support for different cleaning modes of subsequent cleaning equipment.

[0031] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, embodiments of the present invention include many changes, modifications, and equivalents. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0032] To more clearly illustrate the technical solutions and advantages in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the overall structure of the fan in one embodiment of this specification;

[0034] Figure 2 This is a schematic diagram of the installation structure of the fan body and the outer casing in one embodiment of this specification;

[0035] Figure 3 This is a schematic diagram of the structure of a dual-duct assembly in one embodiment of this specification;

[0036] Figure 4 This is a schematic diagram of the overall structure of the fan in another embodiment of this specification;

[0037] Figure 5 This is a schematic diagram of the rotary switching valve in one embodiment of this specification;

[0038] Figure 6 This is a schematic diagram of the bottom structure of the fan in one embodiment of this specification;

[0039] Figure 7 This is a schematic diagram of the bottom structure of the fan in another embodiment of this specification;

[0040] Figure 8 This is a schematic diagram of the casing of the fan in one embodiment of this specification.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1-Main body, 2-Outer shell, 3-Dual air duct assembly, 4-Rotary switching valve; 5-Drive assembly;

[0043] 11-Air inlet, 12-Air outlet;

[0044] 21 - Exhaust vent;

[0045] 31 - First air duct, 32 - Second air duct;

[0046] 41-Valve plate air intake, 42-Valve plate air outlet, 43-First valve plate, 44-Second valve plate. Detailed Implementation

[0047] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this specification.

[0048] It should be noted that the terms "first," "second," etc., in the description, claims, and accompanying drawings of the embodiments in this specification are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0049] In the embodiments of this specification, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the component itself in the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit the embodiments of this specification.

[0050] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “part” or “component” appearing herein can refer to a single part or a combination of multiple parts. Terms such as “installation” or “installation” appearing herein can refer to one component being directly attached to another component or one component being attached to another component via an intermediary. A feature described in one embodiment herein may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise specified.

[0051] Figure 1 This is a schematic diagram of the overall structure of the fan in one embodiment of this specification, as shown below. Figure 1 As shown in some embodiments of this specification, a fan may be provided, which may include a main body 1, a housing 2, a dual air duct assembly 3, and a rotary switching valve 4. Figure 2 This is a schematic diagram of the installation structure of the fan body and casing in one embodiment of this specification, as shown below. Figure 2 As shown, the main body 1 is provided with an air inlet 11 and an air outlet 12. The outer shell 2 is mainly used to house the main body 1 of the fan. The outer shell 2 has a cavity that can accommodate the main body 1, and the outer shell 2 is provided with an exhaust port 21 that can communicate with the air outlet 12 of the fan 1. Figure 1 As shown, the air inlet 11 and air outlet 12 of the fan body 1 can be aligned to the same direction through the outer casing 2. Figure 1 As shown, the dual-duct assembly 3 is disposed adjacent to the housing 2. In some embodiments, the dual-duct assembly 3 may be disposed below the exhaust port 21 of the housing 2. Figure 3 This is a schematic diagram of the dual-duct assembly in one embodiment of this specification, as shown below. Figure 3As shown, the dual-duct assembly 3 may include a first duct 31 and a second duct 32. A rotary switching valve 4 is provided between the dual-duct assembly 3 and the main body 1. The rotation axis of the rotary switching valve 4 coincides with the axis of the air inlet 11 of the fan. By rotating the rotary switching valve 4, the first duct 31 of the dual-duct assembly 3 can be connected to the air inlet 11 and the second duct 32 can be connected to the air outlet 21, or the first duct 31 can be connected to the air outlet 21 and the second duct 32 can be connected to the air inlet 11.

[0052] In other words, by rotating the rotary switching valve 4, the connection between the fan's inlet and outlet and which duct in the dual-duct assembly 3 is made can be controlled, thus changing the fan's airflow direction without changing the fan's position. Specifically, for example... Figure 1 As shown, the direction of the arrow indicates the airflow direction in the fan's air path. Figure 1 The air inlet 11 of the blower is connected to the first air duct 31, and the air outlet 21 of the blower is connected to the second air duct 32. When the blower is working, the air can flow from the first air duct 31 through the air inlet 11 to the air outlet 12, and then through the air outlet 21 to the second air duct 32. Figure 4 This is a schematic diagram of the overall structure of the fan in another embodiment of this specification, as shown below. Figure 4 As shown, the direction of the arrow can indicate the flow direction of the fan's air path. In this embodiment, the fan's air inlet 11 is connected to the second air duct 32, and the fan's air outlet 21 is connected to the first air duct 31. When the fan is working, the air path can flow from the second air duct 32 through the air inlet 11 to the air outlet 12, and then through the air outlet 21 to the first air duct 31.

[0053] In some embodiments of this specification, the dual-duct assembly 3 is provided with a rotating shaft, and a bearing is also sleeved on the rotating shaft. The inner ring of the bearing is connected to the rotating shaft, and the outer ring of the bearing is connected to the rotary switching valve. The rotating shaft of the selection switching valve 4 is set on the dual-duct assembly 3. The rotary switching valve 4 can be sleeved on the rotating shaft, so that when the rotary switching valve 4 rotates around the rotating shaft, the positional relationship between the structure on the rotary switching valve 4 and the dual-duct assembly 3 is changed. This changes the communication relationship between the first air duct 31 and the second air duct 32 on the dual-duct assembly 3 and the fan inlet 11 and outlet 21, thus changing the airflow direction of the fan. In some embodiments of this specification, a sealing element can also be provided between the rotary switching valve 4 and the dual-duct assembly 3 to ensure the fan's sealing performance.

[0054] The rotary switching valve 4 can be controlled manually or by using a drive assembly to control its rotation. For example, a knob can be installed on the rotary switching valve 4, allowing the user to manually control its rotation. Alternatively, a drive motor can be connected to the rotating shaft of the rotary switching valve 4, controlling its rotation through the motor's rotation. The specific method depends on actual needs, and this embodiment does not impose any specific limitations.

[0055] Figure 5 This is a schematic diagram of the rotary switching valve in one embodiment of this specification, as shown below. Figure 5 As shown in some embodiments of this specification, the rotary switching valve 4 is provided with a valve plate suction port 41 and a valve plate outlet 42. The valve plate suction port 41 is closer to the rotation axis of the rotary switching valve 4 than the valve plate outlet 42. Generally, the air inlet 11 of the fan is located on the rotation axis of the fan. The rotation axis of the rotary switching valve 4 coincides with the axis of the fan inlet. Placing the valve plate suction port 41 near the rotation axis of the rotary switching valve 4 ensures that the valve plate suction port 41 is always connected to the air inlet 11 of the fan body 1. Placing the valve plate outlet 42 at a position relatively far from the rotation axis of the rotary switching valve 4 avoids the valve plate outlet 42 from connecting to the air inlet 11. Simultaneously, the valve plate outlet 42 can be positioned to connect with the exhaust port 21.

[0056] The rotary switching valve 4 has its valve plate suction port 41 always connected to the air inlet 11, and its valve plate outlet 42 always connected to the air outlet 21. Since the rotary switching valve 4 is adjacent to the dual-duct assembly 3, rotating the rotary switching valve 4 can control the connection between the first duct 31 and the second duct 32 of the dual-duct assembly 3 and the valve plate suction port 41 and outlet 42, thereby changing the connection between the first duct 31 and the second duct 32 of the dual-duct assembly 3 and the air inlet 11 and outlet 21 of the fan. For example, rotating the rotary switching valve 4 can connect the first duct 31 to the valve plate suction port 41 and the second duct 32 to the valve plate outlet 42, or vice versa. Because the valve plate suction port 41 is connected to the air inlet 11 of the fan body 1, and the valve plate outlet 42 is connected to the exhaust port 21, when the first air duct 31 is connected to the valve plate suction port 41 and the second air duct 32 is connected to the valve plate outlet 42, the first air duct 31 is connected to the air inlet 11 through the valve plate suction port 41, and the second air duct 32 is connected to the exhaust port 21 through the valve plate outlet 42. Similarly, when the first air duct 31 is connected to the valve plate outlet 42 and the second air duct 32 is connected to the valve plate suction port 41, the first air duct 31 is connected to the exhaust port 21 through the valve plate outlet 42, and the second air duct 32 is connected to the air inlet 11 through the valve plate suction port 41.

[0057] The size and shape of the valve plate suction port 41 and valve plate outlet 42 can be set according to the size and shape of the first air duct 31, the second air duct 32, the air inlet 11, and the air outlet 21. This specification does not impose specific limitations on the embodiments. By setting the valve plate suction port 41 and valve plate outlet 42 on the rotary switching valve 4, the connection relationship between the first air duct 31 and the second air duct 32 of the dual air duct assembly 3 and the air inlet 11 and the air outlet 21 of the fan can be switched. The structure is simple and the fan airflow direction can be changed without changing the position of the fan.

[0058] In some embodiments of this specification, such as Figure 5 As shown, the rotary switching valve 4 may further include a first valve plate 43 and a second valve plate 44, wherein the first valve plate 43 and the valve plate air intake 41 are located on the same circumference, and the second valve plate 44 and the valve plate air outlet 42 are located on the same circumference. Figure 5 As shown, if a plane passing through the rotation axis of the rotary switching valve 4 is used as the dividing plane, then the valve plate air intake 41 and the second valve plate 44 can be set on one side of the dividing plane, while the valve plate air outlet 42 and the first valve plate 43 are set on the other side of the rotary switching valve 4. Figure 6 This is a schematic diagram of the bottom structure of the fan in one embodiment of this specification, as shown below. Figure 6As shown, when the first air duct 31 is connected to the air inlet 11 through the valve plate suction port 41 and the second air duct 32 is connected to the air outlet 21 through the valve plate outlet 42, the first air duct 31 and the air outlet 21 can be blocked by the second valve plate 44 on the same side as the valve plate suction port 41, and the second air duct 32 and the air inlet 11 can be blocked by the first valve plate 43 on the same side as the valve plate outlet 42. Figure 7 This is a schematic diagram of the bottom structure of the fan in another embodiment of this specification, as shown below. Figure 7 As shown, similarly, when the first air duct 31 is connected to the exhaust port 21 via the valve outlet 42 and the second air duct 32 is connected to the inlet port 11 via the valve suction port 41, the first valve 43 can block the connection between the first air duct 31 and the inlet port 11, and the second valve 44 can block the connection between the second air duct 32 and the exhaust port 21. It can be seen that by cooperating with the valve suction port 41 and the first valve 43, and with the valve outlet 42 and the second valve 44, the connection relationship between the first air duct 31 and the second air duct 32 of the dual air duct assembly 3 and the inlet port 11 and the exhaust port 21 of the fan can be switched, thereby controlling the direction of the fan's airflow.

[0059] like Figure 5 As shown in some embodiments of this specification, the circumference of the second valve plate 44 is located outside the circumference of the first valve plate 43, and the valve plate suction port 41 is configured as a sector passing through the rotation axis of the rotary switching valve 4, and the valve plate outlet port 42 is configured as a sector-shaped annulus. The size of the central angle of the sector shapes of the valve plate suction port 41 and the valve plate outlet port 42 can be adjusted according to actual needs, such as setting the central angle to 30 degrees, 60 degrees, 80 degrees, 120 degrees, etc. The central angles of the sector shapes of the valve plate suction port 41 and the valve plate outlet port 42 can be the same or different. This specification does not specifically limit the size of the central angles of the sector shapes of the valve plate suction port 41 and the valve plate outlet port 42 in the embodiments.

[0060] When selecting the rotary switching valve 4 to control the connection between the first air duct 31, the second air duct 32 of the dual air duct assembly 3 and the air inlet 11 and exhaust outlet 21 of the fan, the rotation angle can be determined based on the size of the central angle of the fan-shaped sector of the valve plate suction port 41 and the valve plate exhaust port 42. For example... Figure 4 As shown in some embodiments of this specification, the valve plate air intake 41 can be set as a semicircle passing through the rotation axis of the rotary switching valve 4, while the valve plate air outlet 42 can be set as a semicircular ring. Rotating the rotary switching valve 4 by 180 degrees can change the airflow direction of the fan, which can ensure the ventilation volume and allow the first valve plate 43 and the second valve plate 44 to block the first air duct 31 or the second air duct 32. The operation is simple and the rotation position is relatively easy to determine.

[0061] Figure 8This is a schematic diagram of the fan casing in one embodiment of this specification, as shown below. Figure 8 As shown, a perforated array can be installed at one end of the outer casing 2 near the rotary switching valve 4, i.e., at the end where the exhaust port 21 is located. The perforated array can be arranged in a ring at one end of the outer casing 2, and this perforated array can serve as part of the exhaust port 21. In this way, the outer casing 2 can both realize the exhaust function of the fan and accommodate the main body 1 of the fan. Figure 3 As shown, an air intake can be provided in the middle of the end of the housing 2 adjacent to the rotary switching valve 4. This air intake can be used to accommodate the air inlet 11 of the fan. In some embodiments of this specification, the porous array can be arranged in a ring around the air intake. Figures 6-8 As shown, a portion of the porous array is blocked by the second valve plate 44, while the remaining portion of the porous array is connected to the valve plate outlet 42 of the rotary switching valve 4. This portion of the porous array can be connected to the first air duct 31 or the second air duct 32 through the valve plate outlet 42, thereby achieving the connection between the first air duct 31 or the second air duct 32 and the fan outlet.

[0062] like Figure 5 As shown in some embodiments of this specification, the fan may further include a drive assembly 5. The drive assembly 5 may be located near the rotary switching valve 4 on the housing 2. The drive assembly 5 is connected to the rotary switching valve 4 and is used to drive the rotary switching valve 4 to rotate, thereby switching the connection between the air inlet 11 and the first air duct 31 or the second air duct 32, and changing the airflow direction of the fan. The drive assembly 5 can be selected according to actual needs, such as a mechanical transmission structure or a motor. This specification does not impose specific limitations on the embodiments.

[0063] In some embodiments of this specification, the drive component 5 may include a drive gear set and a drive motor, such as... Figure 5 As shown, an external gear is provided on the outer wall of the rotary switching valve 4. A drive gear set meshes with the external gear on the outer wall of the switching valve 4. A drive motor is connected to the drive gear set. The drive motor controls the rotation of the drive gear set, thereby driving the rotation of the external gear meshing with the drive gear set, and thus driving the rotary switching valve 4 to rotate. Of course, other driving methods can be selected according to actual needs, such as: a drive motor and a synchronous belt, or a drive motor and a friction belt, or the rotary switching valve 4 can be directly connected to the motor, etc.

[0064] In some embodiments of this specification, a cleaning device may also be provided, such as a floor scrubber, sweeper, or vacuum cleaner. This cleaning device may include a controller, a fan, and a wastewater tank. The fan may include a dual-duct assembly, a rotary switching valve, and a drive assembly. The structure and connection relationship of the dual-duct assembly, rotary switching valve, and drive assembly can be referred to the description in the above embodiments, and will not be repeated here. As described in the above embodiments, the dual-duct assembly may include a first duct and a second duct. The first duct of the dual-duct assembly is connected to the wastewater tank of the cleaning device, and the second duct is connected to the outside atmosphere. The drive assembly may be drively connected to the rotary switching valve to drive the rotary switching valve to rotate. The controller may be communicatively connected to the drive assembly to control the drive assembly to drive the rotation of the rotary switching valve.

[0065] Specifically, when the cleaning equipment is working, the controller can detect the operating mode of the cleaning equipment and control the drive components accordingly. Different operating modes can control the drive components to rotate the rotary switching valve to different preset positions, thereby connecting the fan's air inlet to one of the first and second air ducts, and the fan's air outlet to the other of the first and second air ducts. This achieves the different airflow direction requirements of the fan under different operating modes, such as... Figure 1 , Figure 4 As shown in the embodiments of this specification, two flow directions of the fan air path can be provided. The method by which the controller detects the operating mode of the cleaning equipment can be determined according to actual needs. For example, in the sewage discharge mode, the status of the cleaning equipment's docking with the base station can be detected to identify whether it has entered the sewage discharge mode. Specifically, a sensor, such as a Hall effect sensor, can be used to identify the docking status, or the battery pack can be detected to be electrically connected to the base station's charging adapter. After determining that the equipment is located at the base station, the machine generally needs to perform self-cleaning and sewage discharge. The cleaning equipment leaving the base station generally indicates the cleaning mode. Of course, depending on the actual usage, other methods can also be used to detect the operating mode of the cleaning equipment; this specification does not specifically limit this method.

[0066] The specific structure of the cleaning equipment can be determined according to actual needs, and its working mode can be determined according to the cleaning process, such as a cleaning mode and a wastewater discharge mode. The cleaning mode can include a vacuuming mode, a floor-washing mode, etc. In some embodiments of this specification, the working mode of the cleaning equipment can include a cleaning mode and a wastewater discharge mode, such as... Figure 4 As shown, Figure 4 Below the first air duct 31, a wastewater tank for the cleaning equipment can be connected. The second air duct 32 is connected to the outside atmosphere. When the cleaning equipment is in cleaning mode, the controller can control the drive component to drive the rotary switching valve to rotate to the first position, so that the air inlet 11 of the blower is connected to the first air duct 31 and the air outlet 21 of the blower is connected to the second air duct 32. For details on the airflow direction of the blower, please refer to [reference needed]. Figure 4 This connects the air inlet of the blower to the wastewater tank, creating negative pressure when the blower rotates. This suction draws the wastewater into the tank, achieving a cleaning function. Figure 1 As shown, a wastewater tank of the cleaning equipment can be connected below the first air duct 31. The second air duct 32 is connected to the outside atmosphere. When the controller detects that the working mode of the cleaning equipment is the sewage discharge mode, the controller can control the drive component to drive the rotary switching valve to rotate to the second position, so that the air inlet 11 of the blower is connected to the second air duct 32 and the air outlet 21 of the blower is connected to the first air duct 31, thereby making the air inlet 11 of the blower connected to the outside atmosphere. When the blower rotates, the first air duct connected to the wastewater tank generates positive pressure, thereby generating a sewage discharge force into the wastewater tank and discharging the wastewater in the wastewater tank.

[0067] Furthermore, cleaning equipment may involve multiple workflows under different operating modes. Some workflows require sewage discharge or suction, while others do not. The usage requirements of the cleaning equipment can be determined based on the workflows within each operating mode, thereby determining the airflow direction of the blower and adjusting the rotary switching valve to meet the needs of different workflows. For example, self-cleaning typically includes a washing stage, a sewage discharge stage, and a drying stage. Depending on whether the remaining space in the sewage tank is sufficient for a complete self-cleaning process, multiple sewage discharges may be necessary, or a process of sewage discharge followed by washing, sewage discharge again, and finally drying may be required. Only when sewage discharge is needed should the blower be controlled to generate positive pressure, creating a force to discharge sewage from the sewage tank. The washing and drying processes can be set to negative pressure mode to draw water from components such as the cleaning rollers into the sewage tank. Therefore, the blower's airflow direction can be switched by controlling the motor-driven rotary switching valve according to the specific workflow of the cleaning equipment, meeting the needs of different workflows. Multiple switches may be required within a single operating mode. For example, in a self-cleaning and sewage discharge mode, the switching process of the fan airflow direction of the cleaning equipment may include: after the cleaning equipment is detected to be connected to the base station, the fan control rotary valve is switched to rotate, so that the fan changes from negative pressure to positive pressure, and sewage discharge is performed immediately; then, the fan switches to negative pressure and starts cleaning; then, the fan switches to positive pressure and discharges sewage again; then the fan switches to negative pressure to absorb some of the heat during drying, drying the roller brush while drying the sewage suction pipe and sewage tank.

[0068] The cleaning equipment provided in the embodiments of this specification realizes that in the cleaning mode, the fan is connected to the sewage tank under negative pressure, and the sewage tank is under negative pressure to suck up dirt; in the sewage discharge mode, the fan is connected to the outside atmosphere under negative pressure, and the sewage tank is under positive pressure to discharge dirt. It can meet the airflow direction requirements of the cleaning equipment in different working modes without the need to set up multiple motors, thus saving the overall space of the cleaning equipment.

[0069] Obviously, the embodiments described above are merely some of the embodiments in this specification, and not all of them. Based on the embodiments in this specification, those skilled in the art can make other variations or modifications without creative effort, and all such variations should fall within the scope of protection of the embodiments in this specification.

[0070] Other embodiments of the embodiments of this specification will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the embodiments of this specification that follow the general principles of the embodiments of this specification and include common knowledge or customary techniques in the art not disclosed in the embodiments of this specification. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the embodiments of this specification are indicated by the following claims.

[0071] It should be understood that the embodiments described herein are not limited to the precise structures already described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from their scope. The scope of the embodiments described herein is limited only by the appended claims.

Claims

1. A fan, characterized by, The fan comprises: a main body (1) having an air inlet (11) and an air outlet (12); a shell (2) formed with a cavity for accommodating the main body (1), the shell (2) having an air outlet (21) communicating with the air outlet (12); a double air duct assembly (3) disposed adjacent to the shell (2) and comprising a first air duct (31) and a second air duct (32); and a rotary switching valve (4) disposed between the double air duct assembly (3) and the main body (1) and used for selectively communicating one of the first air duct (31) and the second air duct (32) with the air inlet (11) and the other with the air outlet (21) through rotation of the rotary switching valve (4); wherein the rotation axis of the rotary switching valve (4) coincides with the axis of the air inlet (11) of the main body (1). The rotary switching valve (4) is provided with a valve plate air inlet (41) and a valve plate air outlet (42), the valve plate air inlet (41) being closer to the rotation axis than the valve plate air outlet (42); wherein the valve plate air inlet (41) communicates with the air inlet (11) and the valve plate air outlet (42) communicates with the air outlet (21); wherein the first air duct (31) communicates with the air inlet (11) through the valve plate air inlet (41) and the second air duct (32) communicates with the air outlet (21) through the valve plate air outlet (42); or the second air duct (32) communicates with the air inlet (11) through the valve plate air inlet (41) and the first air duct (31) communicates with the air outlet (21) through the valve plate air outlet (42).

2. The fan of claim 1, wherein The rotary switching valve comprises a first valve plate (43) and a second valve plate (44), the first valve plate (43) and the valve plate air inlet (41) are located on the same circle, and the second valve plate (44) and the valve plate air outlet (42) are located on the same circle; 3. The fan of claim 2, wherein, wherein when the first air duct (31) communicates with the air inlet (11) and the second air duct (32) communicates with the air outlet (21), the first valve plate (43) blocks the communication of the second air duct (32) with the air inlet (11) and the second valve plate (44) blocks the communication of the first air duct (31) with the air outlet (21); or wherein when the second air duct (32) communicates with the air inlet (11) and the first air duct (31) communicates with the air outlet (21), the first valve plate (43) blocks the communication of the first air duct (31) with the air inlet (11) and the second valve plate (44) blocks the communication of the second air duct (32) with the air outlet (21). The circle where the second valve plate (44) is located is outside the circle where the first valve plate (43) is located; wherein 4. The fan of claim 3, wherein the valve plate air inlet (41) is arranged as a sector passing through the rotation axis of the rotary switching valve (4), and the valve plate air outlet (42) is arranged as a sector ring.

5. The fan according to claim 3, wherein ​ The housing (2) is provided with a porous array adjacent to one end of the rotary switching valve (4), and the porous array constitutes part of the air outlet (21); Part of the porous array is shielded by the second valve plate (44), and the rest of the porous array is in communication with the first air duct (31) or the second air duct (32) through the valve plate air outlet (42).

6. The fan according to claim 1, further comprising a driving assembly (5) arranged on the housing (2) and adjacent to the rotary switching valve (4); wherein the driving assembly (5) is in transmission connection with the rotary switching valve (4) and is used to drive the rotary switching valve (4) to rotate, so that the air inlet (11) of the fan is in communication with the first air duct (31) or the second air duct (32) through the rotation of the rotary switching valve (4). The outer wall of the rotary switching valve (4) is provided with an external gear; 7. The fan of claim 6, wherein, The driving assembly (5) comprises a driving motor and a driving gear set, the driving motor is connected with the driving gear set, and the driving gear set is in meshing connection with the external gear on the outer wall of the rotary switching valve (4). The double air duct assembly is provided with a rotating shaft, and the rotary switching valve (4) is sleeved on the rotating shaft; wherein a bearing is also sleeved on the rotating shaft, the inner ring of the bearing is connected with the rotating shaft, and the outer ring of the bearing is connected with the rotary switching valve (4).

8. The fan of claim 6, wherein, Further comprising a sealing element arranged between the rotary switching valve (4) and the double air duct assembly.

9. The fan of claim 1, wherein, The cleaning device comprises a controller, a fan and a sewage bucket, the fan comprises a double air duct assembly, a rotary switching valve (4) and a driving assembly (5), the first air duct (31) of the double air duct assembly is in communication with the sewage bucket, the second air duct (32) of the double air duct assembly is in communication with the external atmosphere, the driving assembly (5) is in transmission connection with the rotary switching valve (4), and the controller is in communication connection with the driving assembly (5); 10. A cleaning apparatus, characterized by The controller is used to detect the working mode of the cleaning device, control the driving assembly (5) to work according to the working mode, drive the rotary switching valve (4) to rotate to a preset working position, so that the air inlet (11) of the fan is in communication with one of the first air duct (31) and the second air duct (32), and the air outlet (21) of the fan is in communication with the other one of the first air duct (31) and the second air duct (32). The working mode comprises a cleaning mode and a sewage discharge mode; 11. The cleaning apparatus of claim 10, wherein, When the working mode is the cleaning mode, the controller is used to control the driving assembly (5) to drive the rotary switching valve (4) to rotate to a first working position, so that the air inlet (11) of the fan is in communication with the first air duct (31), and the air outlet (21) of the fan is in communication with the second air duct (32). ​ When the working mode is the exhaust mode, the controller is configured to control the driving assembly (5) to drive the rotary switching valve (4) to rotate to a second working position, so that the air inlet (11) of the fan is in communication with the second air duct (32), and the air outlet (21) of the fan is in communication with the first air duct (31).

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