Cleaning device and cleaning system
By setting up a flow channel between the fan and the radar in the cleaning device, the airflow is used to remove dust and hair on the radar, solving the problem of radar failure caused by impurities entering and high temperature, and improving the reliability and service life of the cleaning device.
Patent Information
- Application Number
- CN202422787980.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-10-14
- Estimated Expiration
- 2034-11-14
AI Technical Summary
The radar in the existing cleaning device is easily unable to work properly due to the ingress of impurities, and after long-term use, the radar may overheat and fail to operate normally.
A flow channel is set between the fan and the radar in the cleaning device. The airflow generated by the fan is used to remove dust and hair on the radar, and the heat is dissipated through the flow channel to prevent impurities from entering the radar.
It effectively prevents the radar from failing to work properly due to impurities and high temperature, prolongs the service life of the radar and improves the reliability of the cleaning device.
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Figure CN223429495U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of floor cleaning, and in particular, to a cleaning device and a cleaning system. BACKGROUND
[0002] Cleaning devices include a sweeping robot, a scrubber, and a multifunctional cleaning station, most of which are provided with a radar, which enables the cleaning device to have the ability to position and avoid obstacles.
[0003] However, the cleaning device configured with the radar may cause impurities to enter the radar after long-term use, thereby affecting the radar and ultimately causing the cleaning device to malfunction. CONTENT OF THE UTILITY MODEL
[0004] The main purpose of the present application is to provide a cleaning device and a cleaning system to at least solve the problem that impurities easily enter the radar in the prior art.
[0005] According to one aspect of the present application, a cleaning device is provided, comprising:
[0006] a main body;
[0007] a radar provided on the main body;
[0008] a fan provided on the main body, and a flow channel is provided between the air outlet end of the fan and the radar to deliver the airflow generated by the fan to the radar.
[0009] Further, an avoidance hole is opened at the top of the main body, the avoidance hole extends along the height direction of the main body, the radar is arranged in the avoidance hole, and the flow channel is in communication with the avoidance hole, wherein,
[0010] the outflow end of the flow channel close to the radar is located directly below the avoidance hole along the height direction of the main body; or,
[0011] the outflow end of the flow channel close to the radar is located on the outer circumferential side of the avoidance hole, the center line of the outflow end of the flow channel is tangent to the outer circumferential side wall of the avoidance hole, and the outflow direction of the outflow end of the flow channel is towards the top of the main body.
[0012] Further, the radar and the avoidance hole are gap-fitted, an installation cavity is provided on the main body, the avoidance hole and the installation cavity are in communication, and the fan is installed in the installation cavity.
[0013] Further, the cleaning device further comprises a protective cover connected to the main body and located at the top of the radar.
[0014] The top of the main body is provided with a clearance hole, and a projection of the protective cover at least partially exceeds a projection of the clearance hole in the height direction of the main body.
[0015] Further, the protective cover comprises a cover body and a plurality of ribs, the cover body is arranged at the top of the radar, the plurality of ribs are arranged at the outer circumferential side of the cover body and connected with the main body, and an air outlet hole is formed between adjacent two ribs.
[0016] Further, the cleaning device further comprises a protective cover connected to the main body and located at the top of the radar, the protective cover is provided with a guide structure for guiding the airflow colliding with the protective cover to the upper surface of the main body.
[0017] Further, the guide structure comprises a plurality of guide grooves arranged on the side of the protective cover close to the upper surface of the main body and extending from the center of the protective cover to the outer edge of the protective cover, the plurality of guide grooves are arranged at intervals in the circumferential direction of the protective cover, and the distance between each guide groove and the upper surface of the main body gradually decreases in the direction from the center of the protective cover to the outer edge of the protective cover.
[0018] Further, the guide structure comprises a guide vane arranged at the outer edge of the protective cover, and the distance between the guide vane and the upper surface of the main body gradually decreases in the direction away from the protective cover.
[0019] Further, the cleaning device further comprises a dust collecting box arranged on the main body.
[0020] The fan comprises a negative pressure fan, the suction end of the negative pressure fan is in communication with the dust collecting box, and the air outlet end of the negative pressure fan is in communication with the flow channel.
[0021] In another aspect, the application provides a cleaning system comprising the above cleaning device.
[0022] Compared with the prior art, the cleaning device in the application is provided with a fan, and a flow channel is arranged between the fan and the radar. When the cleaning device works, the fan starts and continuously blows the airflow to the radar through the flow channel, and the airflow carries away the dust or hair impurities at the radar, thereby avoiding the dust or hair from entering the interior of the radar and causing the radar to fail to operate normally. In addition, after the radar works for a long time, the temperature of the radar may be relatively high and affect the radar. In the application, the airflow continuously blows to the radar, and the airflow can carry away the heat on the radar, thereby cooling the radar and preventing the radar from working abnormally due to the excessively high temperature. BRIEF DESCRIPTION OF DRAWINGS
[0023] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
[0024] Figure 1 A structure schematic view of the cleaning device disclosed in the present application in a first perspective view;
[0025] Figure 2 A partial structure schematic view of the cleaning device disclosed in the present application (with the upper cover removed);
[0026] Figure 3 A partial structure schematic view of the cleaning device disclosed in the present application (with the protective cover removed);
[0027] Figure 4 A structure schematic view of the cleaning device disclosed in the present application in a second perspective view;
[0028] Figure 5 A schematic view of a positional relationship between the flow channel and the avoiding hole disclosed in the present application;
[0029] Figure 6 Another schematic view of a positional relationship between the flow channel and the avoiding hole disclosed in the present application
[0030] Figure 7 A bottom view of the protective cover disclosed in the present application;
[0031] Figure 8 A schematic view of a positional relationship between the protective cover, the flow channel and the avoiding hole disclosed in the present application.
[0032] In the above drawings, the following reference signs are used:
[0033] 10, main body; 11, base; 12, upper cover; 20, radar; 30, fan; 31, negative pressure fan; 40, driving member; 50, dust collection box; 60, cleaning assembly; 70, flow channel; 101, mounting cavity; 121, avoiding hole; 122, protective cover; 1221, cover body; 1222, rib; 1223, air outlet hole; 1224, guide structure; 1225, guide vane; 1226, guide groove. DETAILED DESCRIPTION
[0034] It should be noted that the embodiments and features in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0035] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.
[0036] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale of the actual proportions used in the fabrication, assembly, and operation of the example embodiments. Techniques, methods, and apparatus known to those of ordinary skill can not be discussed in detail because such techniques, methods, and apparatus are considered to be part of the existing art. In all examples shown and discussed herein, any specific values are to be interpreted as being exemplary only and not limiting. Other examples of the example embodiments can therefore have different values. It is to be noted that like reference numerals and letters refer to like items in the drawings, and once an item is defined in one drawing, it need not be discussed further in subsequent drawings.
[0037] Referring to Figures 1 to 6 As shown, according to the embodiments of the present application, a cleaning device is provided, which comprises a main body 10, a radar 20 and a fan 30. The radar 20 is arranged on the main body 10, and the fan 30 is arranged on the main body 10. A flow channel 70 is arranged between the fan 30 and the radar 20 to deliver the airflow generated by the fan 30 to the radar 20.
[0038] Specifically, after the cleaning device works for a long time, too much dust or hair may enter the radar 20, so that the dust covers the radar 20 or the hair wraps around the radar 20, and finally the radar 20 cannot accurately monitor the external environment, thereby causing the cleaning device to malfunction. In the present embodiment, the fan 30 is arranged on the cleaning device, and the flow channel 70 is arranged between the fan 30 and the radar 20. When the cleaning device works, the fan 30 is started and blows the airflow to the radar 20 through the flow channel 70. The airflow carries away the dust or hair impurities at the radar 20, thereby avoiding the dust or hair from entering the inside of the radar 20 and causing the radar 20 to malfunction. In addition, after the radar 20 works for a long time, the temperature of the radar 20 may be high and affect the radar 20. In the present embodiment, the airflow is constantly blown to the radar 20, and the airflow can carry away the heat on the radar 20, thereby cooling the radar 20 and preventing the radar 20 from malfunctioning due to high temperature.
[0039] Further, the main body 10 is provided with a mounting cavity 101, and the top of the main body 10 is provided with an avoiding hole 121, which is in communication with the mounting cavity 101. The radar 20 is arranged in the avoiding hole 121, and the radar 20 is arranged to pass through the avoiding hole 121. The fan 30 is arranged in the mounting cavity 101, and the flow channel 70 is in communication with the avoiding hole 121.
[0040] It can be understood that the radar 20 needs to monitor the external environment, so the radar 20 needs to pass through the avoiding hole 121, that is, part of the radar 20 is located in the mounting cavity 101, and part of the radar 20 is located outside the mounting cavity 101. If the fan 30 and the flow channel 70 are arranged, dust, hair and other impurities may enter the radar 20 through the avoiding hole 121, which may eventually cause the radar 20 to malfunction. In the embodiment, the flow channel 70 and the fan 30 are arranged, and the flow channel 70 is in communication with the avoiding hole 121, and the radar 20 is in clearance fit with the avoiding hole 121. This means that the airflow in the flow channel 70 hits the radar 20 and then is discharged to the outside of the cleaning device through the avoiding hole 121. That is, when the cleaning device is working, the airflow is continuously blown out of the avoiding hole 121, thereby preventing dust, hair and other impurities from entering the radar 20 through the avoiding hole 121.
[0041] Further, the avoiding hole 121 extends along the height direction of the main body 10, as shown in FIG. 6, in some embodiments, the outflow port of the flow channel 70 close to the radar 20 is located directly below the avoiding hole 121 along the height direction of the main body 10. Figure 5
[0042] That is, the airflow blown out of the flow channel 70 by the fan 30 is directed upward along the height direction of the main body 10, and then is discharged through the avoiding hole 121 after passing through the radar 20, thereby preventing dust, hair and other impurities from entering the mounting cavity 101 through the avoiding hole 121. The arrangement of the embodiment can increase the flow rate of the airflow discharged from the avoiding hole 121, thereby preventing larger impurities from entering the mounting cavity 101 through the avoiding hole 121 to a certain extent.
[0043] In other embodiments, as shown in FIG. 7, the outflow port of the flow channel 70 close to the radar 20 is located on the outer circumferential side of the avoiding hole 121, the center line of the outflow port of the flow channel 70 is tangent to the outer circumferential wall of the avoiding hole 121, and the outflow direction of the outflow port of the flow channel 70 is toward the top of the main body 10. Figure 6
[0044] Specifically, when the air outlet of the flow channel 70 is located on the outer peripheral side of the avoidance hole 121, the center line of the air outlet of the flow channel 70 is tangent to the outer peripheral wall of the avoidance hole 121, and the air outlet direction of the air outlet of the flow channel 70 is directed toward the top of the main body 10, part of the airflow flowing out of the flow channel 70 hits the radar 20, the flow direction changes, and hits the inner wall surface of the mounting cavity 101 again, and finally the overall flow trend of the airflow is spirally upward and finally flows out of the avoidance hole 121. In this embodiment, since the airflow can act on the radar 20 multiple times, the airflow can effectively carry the dust on the radar 20 out of the avoidance hole 121, thereby increasing the service life of the radar 20 to some extent. In addition, when the airflow spirally rises to the avoidance hole 121, part of the airflow is discharged along the tangent direction of the avoidance hole 121, thereby avoiding the impurities carried out by the airflow from falling into the avoidance hole 121 again due to the action of gravity. Of course, the flow channel 70 can also be provided as multiple flow channels 70, part of the flow channels 70 are located on the outer peripheral side of the avoidance hole 121 near the air outlet of the radar 20, and part of the flow channels 70 are located directly below the avoidance hole 121 near the air outlet of the radar 20.
[0045] In addition, since part of the radar 20 protrudes out of the mounting cavity 101, in order to avoid the accumulation of a large amount of dust on the upper surface of the radar 20, the cleaning device in this embodiment further comprises a protective cover 122, which is connected to the main body 10 and located at the top of the radar 20. On the other hand, the protective cover 122 can also improve the protection performance of the radar 20, thereby avoiding direct contact between the radar 20 and external objects, causing damage to the radar 20.
[0046] As shown in the accompanying drawings, Figure 1 The protective cover 122 comprises a cover body 1221 and a plurality of ribs 1222, the cover body 1221 is arranged at the top of the radar 20, the plurality of ribs 1222 are arranged at the outer peripheral side of the cover body 1221 and connected with the main body 10, and the air outlet holes 1223 are formed between adjacent two ribs 1222.
[0047] Specifically, the cover body 1221 is arranged at the top of the radar 20 to play a protective role for the radar 20 and avoid dust accumulation on the top of the radar 20. The plurality of ribs 1222 are arranged to improve the connection stability of the cover body 1221 and the main body 10. In addition, the air outlet holes 1223 are arranged between adjacent two ribs 1222, which are used for discharging airflow on one hand, and the radar 20 can monitor the external environment through the air outlet holes 1223 on the other hand, thereby avoiding the protective cover 122 from shielding the radar 20 and causing the radar 20 to malfunction.
[0048] Further, in the height direction of the main body 10, the projection of the protective cover 122 at least partially exceeds the projection of the avoiding hole 121. Specifically, the protective cover 122 is arranged above the avoiding hole 121, when the air flow passes through the avoiding hole 121, due to the projection of the protective cover 122 at least partially exceeds the projection of the avoiding hole 121 in the height direction, part of the air flow collides with the protective cover 122, and part of the air flow after the collision, so that the air flow blows to the upper surface of the main body 10, thereby blowing away the dust on the upper surface of the main body 10. In the embodiment, the main body 10 includes a base 11 and an upper cover 12, the upper cover 12 is detachably connected to the base 11, which is convenient for the maintenance of the cleaning device, and the avoiding hole 121 and the protective cover 122 are arranged on the upper cover 12.
[0049] Further, the protective cover 122 is provided with a guide structure 1224, which is used to guide the air flow colliding with the protective cover 122 to the upper surface of the main body 10.
[0050] Specifically, when the air flow blows out of the avoiding hole 121, part of the air flow collides with the protective cover 122, and after the air flow collides with the protective cover 122, it is affected by the guide structure 1224, thereby changing the direction of motion and flowing towards the upper cover 12, and finally blowing away the dust or impurities on the upper cover 12.
[0051] In some embodiments, as shown in the accompanying drawings, Figure 7 The guide structure 1224 includes a plurality of guide grooves 1226, which are arranged on the side of the protective cover 122 close to the upper surface of the main body 10 and extend from the center of the protective cover 122 to the outer edge of the protective cover 122, the plurality of guide grooves 1226 are arranged in the circumferential direction of the protective cover 122, and the distance between each guide groove 1226 and the upper surface of the main body 10 gradually decreases in the direction from the center of the protective cover 122 to the outer edge of the protective cover 122.
[0052] Specifically, when the air flow collides with the side of the protective cover 122 close to the avoiding hole 121, the air flow is affected by the guide grooves 1226 and flows in the extension direction of the guide grooves 1226, and since the distance between each guide groove 1226 and the upper surface of the main body 10 gradually decreases in the direction from the center of the protective cover 122 to the outer edge of the protective cover 122, the air flow flows obliquely from the protective cover 122 to the upper cover 12 after passing through the guide grooves 1226, and finally blows away the dust or impurities on the upper cover 12.
[0053] Further, as shown in the accompanying drawings, Figure 8As shown, the guide structure 1224 includes guide vanes 1225 which are arranged at the outer edge of the protective cover 122 and gradually decrease in distance from the upper surface of the main body 10 in a direction away from the protective cover 122. Similarly, after the air flow collides with the protective cover 122, the air flow is guided by the guide vanes 1225 to move in the extension direction of the guide vanes 1225 and finally flow to the upper cover 12 to blow away the dust or impurities on the upper cover 12. Of course, the guide structure 1224 in the present embodiment can include both the guide vanes 1225 and the guide grooves 1226 to improve the ability to guide the air flow after colliding with the protective cover 122 to the upper cover 12.
[0054] In addition, the cleaning device further includes a driving member 40 which is arranged on the main body 10 and connected with the radar 20, and the driving member 40 is used to drive the radar 20 to rotate.
[0055] Specifically, in the present embodiment, the driving member 40 is arranged at the bottom of the radar 20, and the driving member 40 rotates to drive the radar 20 to rotate, and the radar 20 rotates to monitor the surrounding environment to prevent the cleaning device from colliding with obstacles. In addition, since the radar 20 and the fan 30 have the flow channel 70, the air flow out of the flow channel 70 is affected by the rotating radar 20 to finally rise in a spiral shape and flow out of the avoiding hole 121, so that the air flow can better carry the dust on the radar 20 out of the installation cavity 101. In the present embodiment, the driving member 40 is a motor.
[0056] As shown in the accompanying drawings, Figure 2 The cleaning device further includes a dust collection box 50 which is arranged on the main body 10; the fan 30 includes a negative pressure fan 31, the suction end of the negative pressure fan 31 is in communication with the dust collection box 50, and the air outlet end of the negative pressure fan 31 is in communication with the flow channel 70.
[0057] In the embodiment, the cleaning device further comprises a cleaning assembly 60 for cleaning the bottom surface, and the dust collecting box 50 is provided with an opening corresponding to the cleaning assembly 60. When the cleaning assembly 60 cleans the bottom surface, the suction end of the negative pressure fan 31 applies negative pressure to the dust collecting box 50, so that the dust collecting box 50 generates negative pressure at the opening corresponding to the cleaning assembly 60, and the dust or impurities on the cleaning assembly 60 are sucked into the dust collecting box 50. In addition, the air outlet end of the negative pressure fan 31 provides air flow to the flow channel 70, so that the air flow can cool the radar 20, and prevent dust or hair and other impurities from entering the radar 20. In the embodiment, only one negative pressure fan 31 is used to suck the dust collecting box 50 and provide air flow to the radar 20, which improves the space utilization of the cleaning device to a certain extent. Specifically, the cleaning assembly 60 connected to the dust collecting box 50 in the embodiment is a middle sweeping assembly, which is mainly used to sweep the dust and hair and other impurities on the ground, so that the dust and hair and other impurities are sucked into the dust collecting box 50. The middle sweeping assembly of the embodiment is a brush.
[0058] It can be understood that a dust screen is arranged between the suction end of the negative pressure fan 31 and the dust collecting box 50, so as to prevent dust or other impurities from entering the negative pressure fan 31 through the suction end, and the dust or other impurities are blown into the radar 20 by the air outlet end.
[0059] Further, the radar 20 at least comprises one of a laser radar and an ultrasonic radar. Specifically, the ultrasonic radar has simple structure, low cost, small imaging data processing amount, and can be made into a small radar. The laser radar has high monitoring precision for the environment, and can enable the cleaning device to have good environmental perception ability. In the embodiment, the radar 20 adopts a laser radar with high precision.
[0060] On the other hand, the application also provides a cleaning system comprising the cleaning device in the above embodiment and a base station for charging the cleaning device, replacing sewage, etc. Therefore, the cleaning system comprises all the technical effects of the cleaning device in the above embodiment. Since the technical effects of the cleaning device have been described in detail in the foregoing, they will not be described here.
[0061] In summary, the application provides a cleaning system, which comprises a cleaning device, wherein a fan 30 and a radar 20 are arranged on a main body 10 of the cleaning device, and the fan 30 and the radar 20 are directly provided with a flow channel 70, when the cleaning device works, the fan 30 is started and makes the flow channel 70 flow out the airflow, the airflow hits on the radar 20 and makes the airflow take away the dust or hair and other impurities on the radar 20; at the same time, the airflow can also heat the radar 20 to a certain extent, thereby avoiding the radar overheating and unable to work normally. In addition, the upper surface of the cleaning device of the application is provided with a avoiding hole 121, the radar 20 is arranged in the avoiding hole 121, and the flow channel 70 is communicated with the avoiding hole 121, which means that the avoiding hole 121 continuously flows out the airflow, thereby avoiding the dust or impurities from the avoiding hole 121 into the inside of the radar 20. On the other hand, the application is provided with a protective cover 122 above the avoiding hole 121, and in the height direction of the main body, the projection area of the protective cover 122 at least partially exceeds the projection area of the avoiding hole 121; that is to say, part of the airflow flowing out of the avoiding hole 121 changes the airflow flow direction after hitting the protective cover 122, and hits on the upper cover 12, thereby taking away the dust and impurities on the upper cover 12. Finally, the cleaning device of the application is provided with a dust collecting box 50, the fan 30 is a negative pressure fan 31, the suction end of the negative pressure fan 31 is communicated with the dust collecting box 50, and the air outlet end of the negative pressure fan 31 is communicated with the flow channel, that is, one negative pressure fan 31 can make the dust collecting box 50 collect the stains cleaned by the cleaning assembly 60, and also can produce the airflow blowing to the radar 20, avoiding the hair or impurities entering the inside of the radar 20, that is to say, the structure of the application can greatly improve the space utilization rate of the cleaning device, and at the same time, the manufacturing cost of the cleaning device is reduced to a certain extent.
[0062] For the purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "rear", "front", "vertical", "horizontal", and derivatives thereof (e.g., "vertical ly", "horizontally", etc.) can refer to the relative positions of an object in the drawings as placed thereon by the draftsperson. As such, the relative spatial terms are intended to encompass different positional relationships to the devices depicted in the drawings, during use or operation. For example, if the devices in the drawings were inverted, then an object which is depicted as above other objects or features would instead be oriented below the other objects or features. Accordingly, the exemplary term "above" can encompass both a position superior to and a position inferior to. The devices can be otherwise oriented (rotated 90 degrees or located in other orientations) and the spatially relative descriptions used herein interpreted accordingly.
[0063] In addition, it should be noted that the use of "first", "second", and the like words to qualify elements is merely intended to distinguish the respective elements from one another, and does not have a special meaning unless otherwise stated. Therefore, these words should not be interpreted as limiting the scope of protection of the present application.
[0064] The preferred embodiments of the present application have been described above with the aid of drawing figures, and are not limited to those embodiments per se, which can be modified in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall fall within the scope of protection of the present application.
Claims
1. A cleaning device, characterized in that: include: Subject (10); a radar (20), wherein the radar (20) is disposed on the main body (10); A fan (30) is provided on the main body (10), and a flow channel (70) is provided between an air outlet end of the fan (30) and the radar (20) to transport the airflow generated by the fan (30) to the radar (20).
2. The cleaning device according to claim 1, characterized in that A circumvention hole (121) is provided on the top of the main body (10), the circumvention hole (121) extends along the height direction of the main body (10), the radar (20) is arranged in the circumvention hole (121), and the flow channel (70) is communicated with the circumvention hole (121), wherein: The air outlet port of the flow channel (70) close to the radar (20) is located directly below the avoidance hole (121) along the height direction of the main body (10); or, The flow channel (70) is located near the air outlet port of the radar (20) on the outer peripheral side of the avoidance hole (121), the center line of the air outlet port of the flow channel (70) is tangent to the outer peripheral side wall of the avoidance hole (121), and the air outlet direction of the air outlet port of the flow channel (70) is toward the top of the main body (10).
3. The cleaning device according to claim 2, characterized in that The radar (20) is clearance-matched with the avoidance hole (121); a mounting cavity (101) is provided on the main body (10); the avoidance hole (121) is communicated with the mounting cavity (101); and the fan (30) is installed in the mounting cavity (101).
4. The cleaning device according to claim 3, characterized in that The cleaning device further comprises a protective cover (122), wherein the protective cover (122) is connected to the main body (10) and is located on the top of the radar (20); A relief hole (121) is provided on the top of the main body (10), and along the height direction of the main body (10), the projection of the protective cover (122) at least partially exceeds the projection of the relief hole (121).
5. The cleaning device according to claim 4, characterized in that The protective cover (122) includes a cover body (1221) and a plurality of ribs (1222), wherein the cover body (1221) is arranged on the top of the radar (20), and the plurality of ribs (1222) are arranged at intervals on the outer peripheral side of the cover body (1221) and connected to the main body (10), and an air outlet (1223) is formed between two adjacent ribs (1222).
6. The cleaning device according to claim 1, characterized in that The cleaning device further comprises a protective cover (122), the protective cover (122) being connected to the main body (10) and being located on the top of the radar (20), the protective cover (122) being provided with a guide structure (1224), the guide structure (1224) being used to guide the airflow colliding with the protective cover (122) to the upper surface of the main body (10).
7. The cleaning device according to claim 6, characterized in that The guide structure (1224) includes a plurality of guide grooves (1226), and the plurality of guide grooves (1226) are arranged on a side of the protective cover (122) close to the upper surface of the main body (10) and extend from the center position of the protective cover (122) to the outer edge of the protective cover. The plurality of guide grooves (1226) are arranged at intervals along the circumferential direction of the protective cover (122), and the distance between each guide groove (1226) and the upper surface of the main body (10) gradually decreases along the direction from the center position of the protective cover (122) to the outer edge of the protective cover (122).
8. The cleaning device according to claim 6, characterized in that The guide structure (1224) includes a guide blade (1225), which is arranged on the outer edge of the protective cover (122), and the distance between the guide blade (1225) and the upper surface of the main body (10) gradually decreases in a direction away from the protective cover (122).
9. The cleaning device according to any one of claims 1 to 8, characterized in that The cleaning device further comprises a dust collecting box (50), wherein the dust collecting box (50) is arranged on the main body (10); The fan (30) includes a negative pressure fan (31), the suction end of the negative pressure fan (31) is connected to the dust collecting box (50), and the air outlet end of the negative pressure fan (31) is connected to the flow channel (70).
10. A cleaning system, characterized in that: The cleaning system comprises the cleaning device according to any one of claims 1 to 9.