Dual-fan module and cleaning robot

Abstract

The present disclosure belongs to the technical field of robots, and particularly relates to a double-fan module and a cleaning robot. The double-fan module comprises a first shell, a second shell and two fans. The first shell comprises two air inlet channels, which extend from the horizontal direction of the first shell to the thickness direction in the first shell. The second shell comprises two air outlet channels and two fan chambers. One air outlet channel is communicated with one fan chamber. The second shell is connected with the first shell in the thickness direction. One air inlet channel is communicated with one fan chamber. Each fan is arranged in the corresponding fan chamber. The fan is used for providing suction and extracting air, so that the airflow sequentially passes through the air inlet channel, the fan chamber and the air outlet channel. The scheme of the present disclosure can improve the problem of small fan flow.

Description

Technical Field

[0001] This disclosure belongs to the field of robotics technology, specifically relating to a dual-fan module and a cleaning robot. Background Technology

[0002] As people's living standards continue to improve, cleaning robots are becoming more and more widespread, and their level of intelligence is developing from the initial basic intelligence to a higher level of intelligence, gradually replacing traditional manual cleaning.

[0003] When a cleaning robot sweeps or vacuums, its roller brush rotates, and the fan assembly draws air from the dustbin, creating suction at the suction port. Debris swept up by the roller brush is then sucked into the dustbin. However, because the airflow generated by the fan assembly per unit time is not large enough, the amount of debris carried away by the airflow is limited, resulting in cleaning efficiency that needs improvement. Summary of the Invention

[0004] The purpose of this disclosure is to provide a dual-fan module and a cleaning robot, thereby overcoming, at least to some extent, one or more problems caused by the limitations and defects of related technologies.

[0005] The first aspect of this disclosure provides a dual-fan module, which includes:

[0006] The first housing includes two air inlet channels, which extend from the horizontal direction of the first housing to the thickness direction within the first housing.

[0007] The second housing includes two air outlet channels and two fan chambers, one of the air outlet channels communicates with one of the fan chambers, the second housing is connected to the first housing in the thickness direction, and one of the air inlet channels communicates with one of the fan chambers;

[0008] Two fans are provided, each fan being disposed in a corresponding fan chamber. The fans are used to provide suction and draw in air, so that the airflow passes sequentially through the air inlet channel, the fan chamber, and the air outlet channel.

[0009] In one exemplary embodiment of this disclosure, two air inlet channels are symmetrically arranged on the first housing along the thickness direction, and two air outlet channels of the second housing are symmetrically arranged along the thickness direction.

[0010] In an exemplary embodiment of this disclosure, the air inlet channel includes an exhaust port and an exhaust connection port. The two exhaust ports in the two air inlet channels are both disposed on one side of the first housing in the horizontal direction. The exhaust ports are used to connect with the dust box, and the exhaust connection port is disposed on one side of the first housing in the thickness direction.

[0011] The second housing also includes an air inlet connection port and an air outlet, wherein the air inlet connection port is connected to the air outlet connection port so that the fan chamber is connected to the air inlet channel.

[0012] In one exemplary embodiment of this disclosure, a sealing portion is provided between the air outlet connection port and the air inlet connection port, the sealing portion being used to seal the periphery of the air outlet connection port and the air inlet connection port.

[0013] In an exemplary embodiment of this disclosure, in the thickness direction, the first housing is provided with a guide portion on the side away from the air outlet connection port. The guide portion is used to guide the airflow entering from the exhaust port into the air inlet channel and to accumulate and guide the airflow to the air outlet connection port.

[0014] In one exemplary embodiment of this disclosure, the guide portion is vortex-shaped and recessed towards one side of the air outlet connection port.

[0015] In one exemplary embodiment of this disclosure, the axis of the air guide, the axis of the air outlet connection port, and the rotation axis of the fan are coaxially arranged.

[0016] In one exemplary embodiment of this disclosure, the fan is installed in the fan chamber, and the air outlet channel is arranged around the fan chamber in the circumferential direction.

[0017] In one exemplary embodiment of this disclosure, the second housing includes an upper housing and a lower housing, the upper housing and the lower housing being detachably connected, and the upper housing and the lower housing together defining the air outlet channel.

[0018] In one exemplary embodiment of this disclosure, the included angle between the exhaust port and the exhaust port is an acute angle.

[0019] In one exemplary embodiment of this disclosure,

[0020] This disclosure also provides a cleaning robot, which includes a robot body and a dual-fan module detachably mounted on the robot body. The dual-fan module is the aforementioned dual-fan module. The robot body also includes a dust box assembly, and the air inlet channel of the first housing is connected to the dust box assembly.

[0021] The dual-fan module and cleaning robot disclosed herein have the following beneficial effects:

[0022] In this design, a first housing is installed on top of the second housing. This first housing acts as an independent air intake structure. Since the air intake channel is connected to the air outlet channel through the fan chamber, the airflow from the dustbin assembly is diverted and directed to the air outlet channel within the second housing. Both fans share the same air intake structure and can operate synchronously, forming a dual-fan structure. This increases the airflow rate per unit time, allowing for the extraction of more waste and improving cleaning efficiency. More importantly, the first housing (i.e., the air intake structure) completely covers the top of the second housing (i.e., the fan structure). Compared to the limited opening area of ​​a conventional single-fan air inlet, the air intake structure in this design has a large opening on one side, resulting in a larger air intake area. Therefore, with the same air intake volume, the larger air intake area at the exhaust port leads to a relatively lower air velocity flowing through the air intake channel. This results in a lower coefficient of friction between the airflow and the inner wall of the air intake structure, leading to less noise and reducing the noise level of the dual-fan module during operation. Furthermore, the air intake channel in the air intake structure allows the airflow to be buffered for a period of time within the first housing, reducing the airflow velocity and consequently reducing suction noise. In addition, the air intake channel guides the airflow from horizontal to downward into the fan, changing the airflow direction and giving the airflow a certain vortex beforehand. This allows the airflow to enter the air outlet channel with less resistance to the inner wall of the air outlet channel, which also reduces suction noise.

[0023] Other features and advantages of this disclosure will become apparent from the following detailed description, or may be learned in part by practice of this disclosure.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0026] Figure 1 A schematic diagram of the cleaning robot according to an embodiment of the present disclosure is shown from one perspective;

[0027] Figure 2 It shows Figure 1 A structural schematic diagram of the cleaning robot from another perspective;

[0028] Figure 3 It shows Figure 1A schematic diagram of the dual-fan module from one perspective;

[0029] Figure 4 It shows Figure 3 A schematic diagram of the dual-fan module from another perspective;

[0030] Figure 5 It shows Figure 3 An exploded view of the aforementioned dual-fan module.

[0031] Explanation of reference numerals in the attached drawings: 1. Cleaning robot; 100. Dual fan module; 200. Chassis; 300. Dust box assembly; 10. First housing; 11. Left housing; 12. Right housing; 13. Air inlet channel; 13a. Left air inlet channel; 13b. Right air inlet channel; 130. Exhaust port; 131. Air outlet connection port; 20. Second housing; 21. Upper housing; 22. Lower housing; 23. Air outlet channel; 230. Air inlet connection port; 231. Air outlet; 30. Fan; 31. Drive motor; 32. Fan blade; 40. Sealing part; 50. Shock-absorbing connecting pipe; 60. Sealing ring; 70. Air guide part. Detailed Implementation

[0032] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art.

[0033] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0034] The present disclosure will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present disclosure described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0035] This disclosure provides a cleaning robot; please refer to [link / reference]. Figure 1 and Figure 2It includes a dual-fan module 100, a chassis 200, and a dust box assembly 300. The dust box assembly 300 and the dual-fan module 100 are independently installed on the chassis 200. The dust box assembly 300 and the dual-fan module 100 are connected. The dual-fan module 100 is used to create negative pressure to suck up dust from the ground and to create airflow through the dust box assembly 300 and the dual-fan module 100. The dust box assembly 300 is used to collect the dust that enters the dust box assembly 300 along with the airflow, so as to play the role of cleaning and dust suction.

[0036] The dustbin assembly 300 may include an air inlet (not shown in the figure), a dust collection chamber (not shown in the figure), and an air outlet (not shown in the figure). The air inlet is usually located at the bottom of the dust collection chamber and faces downwards towards the ground to facilitate the suction of dust from the ground. The air outlet is usually located on one side of the dust collection chamber. The dust collection chamber has a filter (not shown in the figure) at the air outlet to intercept dust. This filter can intercept dust passing through the air outlet and trap it in the dust collection chamber. Under the suction action of the dual fan module 100, dust enters the dustbin assembly 300 with the airflow from the air inlet. Then, when passing through the air outlet of the dustbin assembly 300, the filter can intercept dust and other particles in the dust collection chamber. The airflow then enters the dual fan module 100 after passing through the air outlet and is then discharged to the outside, thus completing the dust collection work of the cleaning robot 1.

[0037] Please see Figure 3 , Figure 4 and Figure 5 This disclosure provides a dual-fan module 100, which includes a first housing 10, a second housing 20, and two fans 30. The first housing 10 includes two air inlet channels 13, which extend from the horizontal direction to the thickness direction. The second housing 20 includes two air outlet channels 23 and two fan chambers, with each air outlet channel 23 corresponding to one of the two fan chambers. The second housing 20 is connected to the first housing 10 in the thickness direction, and the two fan chambers are respectively corresponding to one of the two air inlet channels 13. Each of the two fans 30 is disposed in a corresponding fan chamber, and the fan 30 is used to provide suction and draw air, so that the airflow passes sequentially through the air inlet channel 13, the fan chamber, and the air outlet channel 23.

[0038] It should be noted that, as Figure 3 As shown, the plane formed by the X and Y directions can be the horizontal direction mentioned above, which can be understood as the extension direction of the plane of the first housing 10; the Z direction can be the thickness direction mentioned above, which can be understood as the extension direction of the thickness of the first housing 10.

[0039] The first housing 10 can fully cover the second housing 20, thus ensuring the air intake area and length of the air intake channel of the first housing. This increases the residence time of the airflow within the first housing 10, buffering the airflow and reducing suction noise. Within the first housing 10, the two air intake channels 13 can be distributed horizontally or vertically. In this embodiment, the two air intake channels 13 are symmetrically distributed horizontally within the first housing 10. Therefore, the two air intake channels 13 in the first housing 10 can be referred to as the left air intake channel 13a and the right air intake channel 13b. The symmetrical distribution of the left air intake channel 13a and the right air intake channel 13b ensures that the airflow force received by the left air intake channel 13a and the right air intake channel 13b is balanced during the air intake process, improving the operational stability of the air intake structure. The first housing 10 may also include a left housing 11 and a right housing 12 that are symmetrical about left and right. The left housing 11 and the right housing 12 are connected to form the first housing 10, and the left air inlet channel 13a and the right air inlet channel 13b are respectively provided in the left housing 11 and the right housing 12.

[0040] Furthermore, the horizontal cross-sectional shapes of the left housing 11 and the right housing 12 can be elliptical, circular, or arc-shaped, etc. In this embodiment, taking the horizontal cross-section of the left housing 11 and the right housing 12 as circular as an example, the cavities inside the left housing 11 and the right housing 12 form the left air intake channel 13a and the right air intake channel 13b, which are arranged in a ring within the first housing 10.

[0041] Both the left air inlet channel 13a and the right air inlet channel 13b include an exhaust port 130 and an exhaust connection end 131 arranged along the airflow direction. The exhaust port 130 of the left housing 11 is located on one side of the left housing 11 in the horizontal direction, while the exhaust connection end 131 is located at the bottom of the left housing 11. This ensures that the airflow is horizontal when passing through the exhaust port 130, and then switches to the thickness direction (i.e., vertical direction) when passing through the exhaust connection port 131. Similarly, the exhaust port 130 of the right housing 12 is located on one side of the right housing 12 in the horizontal direction, while the exhaust connection end 131 is located at the bottom of the right housing 12. The exhaust ports 130 of the left housing 11 and the right housing 12 are both located on the same side of the first housing 10, which facilitates docking with the air passage of the dust box assembly 300, thereby connecting the air passage of the dust box assembly 300 with the air inlet channel 13 inside the first housing 10. The air outlet connection 131 of the left housing 11 and the right housing 12 are connected to the fan chamber in the second housing 20.

[0042] It should be noted that the opening area of ​​the air vent in the dust box assembly 300 matches the opening area of ​​the two exhaust vents 130 in the first housing 10, thereby enabling the exhaust vents 130 of the left air inlet channel 13a and the right air inlet channel 13b in the first housing 10 to connect with the air vent of the dust box assembly 300. A sealing ring 60 is provided between the air vent of the dust box assembly 300 and the exhaust vents 130 of the first housing 10, and the sealing ring 60 is used to seal the connection gap between the dust box assembly 300 and the first housing 10.

[0043] In an exemplary embodiment of this disclosure, the air outlet connection end 131 of the left housing 11 is located in the middle of the left housing 11, and the air outlet connection port 131 of the right housing 12 is located in the middle of the right housing 12. This allows the airflow of the air inlet channel 13 in the first housing 10 to be guided toward the center of the left housing 11 or the right housing 12, forming a swirling airflow, which facilitates the airflow entering the second housing 20 and reduces noise.

[0044] In an exemplary embodiment of this disclosure, the first housing 10 has a guide portion 70 on the side away from the air outlet connection end 131 (i.e., the top of the first housing 10) in the thickness direction. It is understood that both the left housing 11 and the right housing 12 have a guide portion 70. Since the first housing 10 needs to guide the airflow through the air inlet channel 13 to the air outlet connection end 131 at the bottom of the first housing 10, the guide portion 70 at the top of the first housing 10 can guide the airflow entering the air inlet channel 13 from the exhaust port 130 and concentrate the airflow to the air outlet connection port 131, thereby guiding the airflow and forming a swirling airflow. The guide portion 70 guides the airflow, reduces the irregularity of the airflow within the air inlet channel 13, and avoids significant loss of kinetic energy due to the uncertainty of the airflow direction within the first housing 10, thus ensuring the suction efficiency of the fan 30 inside the second housing 20.

[0045] In some embodiments of this disclosure, the guide portion 70 is vortex-shaped and recessed towards the side of the air outlet connection port 131. The vortex-shaped guide portion 70 can better guide the airflow in the air inlet channel 13, directing the airflow into a vortex with a swirling direction, and leading it to the air outlet connection port 131, which facilitates the subsequent discharge of airflow in the air outlet channel 23, and reduces noise during the discharge process.

[0046] In some embodiments of this disclosure, the second housing 20 can have various structures, such as an integral structure or a split structure. Taking a split structure as an example, the second housing 20 may include two upper housings 21 and two lower housings 22. One upper housing 21 and one lower housing 22 are detachably connected. The upper housing 21 and one lower housing 22 together define a fan chamber and an air outlet duct 23. The other upper housing 21 and the other lower housing 22 together define another fan chamber and another air outlet duct 23. The detachable connection between the upper housings 21 and the lower housings 22 facilitates the disassembly of the second housing 20, making it convenient for the fan 30 to be installed, disassembled, and maintained.

[0047] The upper shell 21 and the lower shell 22 can be connected by screws, snaps, or other means.

[0048] For example, taking the screw connection between the upper shell 21 and the lower shell 22 as an example, one of the upper shell 21 and the lower shell 22 is provided with a threaded post with a screw hole inside, and the other is provided with a connecting lug with a screw hole. The upper shell 21 and the lower shell 22 are detachably connected by screws.

[0049] In some embodiments, the two fan chambers can be two spaced chambers formed on a housing, the housing including a lower half-shell and an upper half-shell, the lower half-shell having two spaced lower chambers and each connected to a lower air duct, the upper half-shell having two spaced upper chambers and each connected to an upper air duct, the upper half-shell and the lower half-shell being joined together, the upper chambers and the lower chambers being joined together to form a fan chamber, and the upper air ducts and the lower air ducts being joined together to form an air outlet channel.

[0050] The horizontal cross-sectional shape of the second housing 20 can be elliptical, circular, or arc-shaped, etc. In this embodiment, the horizontal cross-section of the second housing 20 is circular, and the two fans 30 are correspondingly installed in the fan chambers of the second housing 20. Please refer to [link / reference]. Figure 5 The fan 30 includes a drive motor 31 and a fan blade 32. The output end of the drive motor 31 is connected to the fan blade 32, thereby driving the fan blade 32 to rotate. Specifically, the fan 30 can be an exhaust fan, such as a turbine-type negative pressure fan.

[0051] In some embodiments of this disclosure, please refer to Figure 5 The air outlet duct 23 of the second housing 20 is arranged in a ring around the circumference of the corresponding fan chamber. The second housing 20 includes an air inlet connection port 230 and an air outlet 231. Due to the layout considerations of the cleaning robot 1 itself, the air outlet 231 of the air outlet duct 23 needs to be directed at a certain angle to the direction of the exhaust 130 of the first housing 10, so as to facilitate the introduction and discharge of airflow. Therefore, the air outlet duct 23 is arranged around the circumference of the fan chamber 30, which makes it easier to place the air outlet 231 of the second housing 20 close to the exhaust 130.

[0052] Furthermore, the air inlet connection 230 is connected to the air outlet connection port 131, thereby connecting the air outlet channel 23 to the air inlet channel 13 through the fan chamber. A sealing part 40 is provided between the air outlet connection 131 and the air inlet connection port 230. The sealing part 40 is used to ensure a peripheral seal between the air outlet connection port 131 and the air inlet connection port 230, thereby ensuring seamless communication between the air inlet channel 13 of the first housing 10 and the fan chamber of the second housing 20. This prevents air leakage during the suction process of the fan 30, thus avoiding any impact on the suction efficiency of the fan 30.

[0053] For example, the horizontal cross-sectional shape of the air outlet connection port 131 and the air inlet connection port 230 can be circular. When the horizontal cross-section of the air outlet connection port 131 and the air inlet connection port 230 is circular, the sealing part 40 can be an O-ring rubber ring, which covers the periphery of the air outlet connection port 131 and the air inlet connection port 230. Because the rubber sealing part 40 has a certain elasticity and provides a certain cushioning effect, the sealing part 40 can also effectively reduce the vibration caused by the airflow impacting the first housing 10 and the second housing 20, thereby reducing the noise generated during the suction process.

[0054] In some embodiments of this disclosure, the axis of the guide section 70, the axis of the air outlet connection port 131, and the rotation axis of the fan 30 are coaxially arranged, thereby better guiding the airflow through the air inlet channel 13 and the air outlet channel 23, smoothly leading the airflow to the air outlet 231 for discharge, avoiding the airflow from being dispersed in the dual fan module 100, improving the airflow efficiency, and also reducing noise.

[0055] In some embodiments of this disclosure, the angle between the exhaust port 130 and the exhaust port 231 is an acute angle. For better internal layout of the cleaning robot 1, the fan structure and dustbin assembly 300 are typically located at the rear of the robot, while the front of the robot generally houses the cleaning wheels. Therefore, the exhaust port 130 and exhaust port 231 need to be set at a certain angle, specifically an acute angle. Compared to setting the exhaust port 130 and exhaust port 231 in the same direction, this ensures the relative independence of the exhaust and ventilation processes, thereby reducing interference between the intake and exhaust airflows, while also meeting the layout requirements of the fan structure and dustbin assembly 300 on the robot.

[0056] In some embodiments of this disclosure, please refer to Figure 5 A shock-absorbing connecting pipe 50 is fitted at the air outlet 231 of the second housing 20. The shock-absorbing connecting pipe 50 can effectively connect the air outlet end of the second housing 20 to the robot, and play the role of connection and shock absorption.

[0057] The dual-fan module and cleaning robot disclosed herein have the following beneficial effects:

[0058] The first housing 10, located on top of the second housing 20, acts as an independent air intake structure. Since the air intake channel 13 is connected to the air outlet channel 23 through the fan chamber, the airflow from the dust box assembly 300 can be diverted and directed to the air outlet channel 23 inside the second housing 20 through the air intake structure. The two fans 30 share the same air intake structure, and the two fans 30 can work synchronously to form a dual-fan fan structure, which increases the airflow per unit time, thereby allowing more garbage to be extracted and improving cleaning efficiency. More importantly, the first housing 10 (i.e., the air inlet structure) can completely cover the top of the second housing 20 (i.e., the fan structure). Compared to the air inlet of a conventional single fan, which has a limited opening area, the air inlet structure in this design has an overall opening on one side, resulting in a large air inlet area. Therefore, at the same air intake volume, due to the larger air inlet area of ​​the exhaust port 130, the wind speed flowing through the air inlet channel 13 is relatively lower. This results in a relatively low coefficient of friction between the air flowing through the air inlet channel 13 and the air inlet structure, and thus relatively low noise, reducing the noise during the operation of the dual fan module. Furthermore, the air inlet channel in the air inlet structure allows the airflow to be buffered for a period of time within the first housing, reducing the airflow velocity and correspondingly reducing suction noise. Moreover, the air inlet channel guides the airflow from horizontal to downward into the fan, changing the airflow direction and giving the airflow a certain vortex beforehand. This reduces the resistance between the airflow and the inner wall of the air outlet channel, further reducing suction noise.

[0059] Furthermore, the terms "first," "second," "third," and "fourth" 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," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0060] In this disclosure, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0061] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure. Therefore, any changes or modifications made in accordance with the claims and description of the present disclosure should fall within the scope of the patent coverage of the present disclosure.

Claims

1. A dual-fan module, characterized in that, include: The first housing includes two air inlet channels, which extend from the horizontal direction of the first housing to the thickness direction within the first housing. The second housing includes two air outlet channels and two fan chambers, one of the air outlet channels communicates with one of the fan chambers, the second housing is connected to the first housing in the thickness direction, and one of the air inlet channels communicates with one of the fan chambers; Two fans are provided, each fan being disposed in a corresponding fan chamber. The fans are used to provide suction and draw in air, so that the airflow passes sequentially through the air inlet channel, the fan chamber and the air outlet channel. The air inlet channel includes an exhaust port and an exhaust connection port. The two exhaust ports in the two air inlet channels are both located on one side of the first housing in the horizontal direction. The exhaust ports are used to connect with the dust box assembly. The exhaust connection port is located on one side of the first housing in the thickness direction. In the thickness direction, the first housing is provided with a guide section on the side away from the air outlet connection port. The guide section is used to guide the airflow that enters from the exhaust port into the air inlet channel and to accumulate and guide the airflow to the air outlet connection port. The axis of the air guide, the axis of the air outlet connection port, and the rotation axis of the fan are all coaxially arranged.

2. The dual-fan module according to claim 1, characterized in that, The two air inlet channels are symmetrically arranged on the first housing along the thickness direction, and the two air outlet channels of the second housing are symmetrically arranged along the thickness direction.

3. The dual-fan module according to claim 1, characterized in that, The second housing also includes an air inlet connection port and an air outlet, wherein the air inlet connection port is connected to the air outlet connection port so that the fan chamber is connected to the air inlet channel.

4. The dual-fan module according to claim 3, characterized in that, A sealing part is provided between the air outlet connection port and the air inlet connection port, and the sealing part is used to seal the periphery of the air outlet connection port and the air inlet connection port.

5. The dual-fan module according to claim 1, characterized in that, The air guide is vortex-shaped and recessed on one side toward the air outlet connection port.

6. The dual-fan module according to claim 1, characterized in that, The fan is installed in the fan chamber, and the air outlet channel is arranged around the fan chamber in the circumferential direction.

7. The dual-fan module according to claim 1, characterized in that, The second housing includes an upper housing and a lower housing, the upper housing and the lower housing being detachably connected, and the upper housing and the lower housing together defining the air outlet channel.

8. The dual-fan module according to claim 3, characterized in that, The angle between the exhaust vent and the outlet is an acute angle.

9. A cleaning robot, comprising a robot body and a dual-fan module mounted on the robot body, characterized in that, The dual-fan module is the dual-fan module according to any one of claims 1 to 8, and the robot body further includes a dust box assembly, wherein the air inlet channel of the first shell is connected to the dust box assembly.

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