Negative pressure cavity exhaust structure and cleaning robot

Abstract

The utility model discloses a negative-pressure cavity exhaust structure and a cleaning robot and relates to the technical field of intelligent cleaning equipment. The negative pressure cavity exhaust structure comprises a negative pressure cavity and a fan used for forming negative pressure in the negative pressure cavity so as to adsorb the cleaning robot to a to-be-cleaned surface, and further comprises an exhaust channel used for discharging sucked objects in the negative pressure cavity to the outside of a machine body. An isolation barrier is formed through the exhaust channel so as to prevent inhaled objects from making contact with a circuit structure in the machine body. According to the utility model, adverse effects on the interior of the machine caused by the fact that sucked objects are discharged to the outside after passing through the interior of the machine can be effectively avoided, particularly, the sucked objects can be prevented from being contacted with exposed electrical parts in the machine, and the risk of faults such as poor contact caused by oxidation damage of the electrical parts is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to intelligent cleaning equipment technical field, especially in kind of negative pressure cavity exhaust structure and cleaning robot. BACKGROUND

[0002] The existing window cleaning robot mostly sets the air outlet at the side or top of the machine. The air, dust, water mist and the like sucked into the negative pressure cavity at the bottom of the machine are discharged to the outside through the air outlet at the side or top of the machine. Since the suction includes air, dust, water mist and the like, in the process of discharging, the suction will contact the exposed electrical components (such as circuit board, interface end) in the machine, which is easy to cause the oxidation damage of the electrical components, and further cause the poor contact failure, thereby affecting the normal work and service life of the machine. SUMMARY

[0003] One of the purposes of the utility model is to provide a negative pressure cavity exhaust structure which can avoid the adverse effects of the suction on the internal parts of the machine.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme: a negative pressure cavity exhaust structure, comprising a negative pressure cavity and a fan for forming negative pressure in the negative pressure cavity to adsorb the cleaning robot on the surface to be cleaned, further comprising an exhaust passage for discharging the suction in the negative pressure cavity to the outside of the machine body, and forming an isolation barrier through the exhaust passage to prevent the suction from contacting the circuit structure inside the machine body.

[0005] Further, the negative pressure cavity exhaust structure further comprises a sealing cover installed at the air outlet end of the fan and sealing the upper end of the negative pressure cavity, the exhaust passage comprises an air duct arranged in the machine body of the cleaning robot and connected with the negative pressure cavity, and the air duct discharges the suction in the negative pressure cavity through the air outlet at the bottom end of the machine body.

[0006] Further, the air outlet is arranged at the bottom of the air exhaust groove outside the negative pressure cavity, and an opening is arranged on the side wall of the negative pressure cavity and connected with the air exhaust groove to form the air duct.

[0007] Further, the air outlet has at least two places and is distributed on opposite sides of the machine body.

[0008] Further, the middle of the sealing cover is provided with a concave mounting groove, and the fan is installed in the mounting groove.

[0009] Further, the sealing cover is provided with an annular lightening groove outside the mounting groove, and a plurality of reinforcing ribs are arranged in the annular lightening groove.

[0010] Another purpose of the utility model is to provide a cleaning robot, which comprises a machine body and a cleaning turntable arranged at the bottom of the machine body, and further comprises the negative pressure cavity exhaust structure described above.

[0011] Further, the cleaning turntable is provided with a chamber, and the chamber is connected with a negative pressure cavity.

[0012] Further, the outlet end of the air outlet at the bottom of the machine body is located outside the projection area of the cleaning turntable on the bottom of the machine body.

[0013] Further, the machine body is provided with a fixed shell, and a gap is left between the machine body and the fixed shell to form an air flow sandwich gap, the negative pressure cavity is arranged on the fixed shell and connected with the air flow sandwich gap, and the chamber on the cleaning turntable is connected with the negative pressure cavity through the air flow sandwich gap.

[0014] The negative pressure cavity exhaust structure of the utility model, through the exhaust passage arranged, exhausts the inhaled material in the negative pressure cavity to the outside of the machine body, utilizes the isolation barrier formed by the exhaust passage, prevents the inhaled material from contacting the circuit structure inside the machine body. In this way, the dust, water mist and other components in the inhaled material are prevented from affecting the internal circuit structure, for example, oxidation damage of exposed electrical components such as circuit boards and interface ends caused by contacting the inhaled material is prevented, and in turn, a poor contact fault is caused. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a perspective view of a cleaning robot Figure 1 ;

[0016] Figure 2 is a perspective view of a cleaning robot Figure 2 , and a fan and a sealing cover are omitted

[0017] Figure 3 is a schematic view of a bottom structure of a cleaning robot

[0018] Figure 4 is an exploded view of a cleaning robot Figure 1 ;

[0019] Figure 2 is an exploded view of a cleaning robot Figure 6 ;

[0020] Figure 1 is a schematic view of an installation structure of a fan and a sealing cover Figure 7 ;

[0021] Figure 2 is a schematic view of an installation structure of a fan and a sealing cover Figure 8 ;

[0022] Figures 1-8 is a schematic view of a structure of a sealing cover.

[0023] IN THE DRAWINGS:

[0024] 1 - machine body 1a - negative pressure cavity

[0025] 1b - exhaust port 2 - fan

[0026] 2a - fan blade 3 - sealing cover

[0027] 3a - mounting groove 3b - annular weight-reducing groove

[0028] 3c - reinforcing rib 4 - exhaust groove

[0029] 5 - cleaning turntable 5a - chamber

[0030] 6 - drive module 7 - fixed housing. DETAILED DESCRIPTION

[0031] In order for those skilled in the art to have a clearer understanding of the concept of the present application, further description will be made in conjunction with the embodiments and the accompanying drawings, which can be seen as follows Figures 1-8 . Embodiment 1

[0032] The embodiment provides a negative pressure cavity exhaust structure, aiming to improve the problem of existing cleaning robot internal parts being damaged by oxidation due to the entry of suction material into the machine interior. The negative pressure cavity exhaust structure discharges the suction material in the negative pressure cavity 1a to the outside of the machine body 1 by setting an exhaust passage. In this process, the exhaust passage can form an effective isolation barrier to prevent the suction material from contacting the circuit structure inside the machine body 1, thereby reducing the risk of part oxidation damage.

[0033] Specifically, as shown in Figures 6-8 , the negative pressure cavity exhaust structure includes a negative pressure cavity 1a and a fan 2, which can form a negative pressure in the negative pressure cavity 1a to adsorb the cleaning robot to the surface to be cleaned. The negative pressure cavity exhaust structure further includes an exhaust passage and a sealing cover 3, which is installed at the air outlet end of the fan 2 and seals the upper end of the negative pressure cavity 1a, so as to form a good sealing effect and avoid the suction material being discharged into the machine interior through the upper end of the negative pressure cavity 1a. The exhaust passage includes an air duct and an exhaust port 1b connected to the air duct, the air duct is arranged in the machine body 1 of the cleaning robot and connected to the negative pressure cavity 1a, and the air duct discharges the suction material in the negative pressure cavity 1a through the exhaust port 1b extending to the bottom end of the machine body 1. In this way, the suction material can be prevented from entering the machine interior, so that the machine interior parts will not be affected. In addition, the exhaust port 1b can also be arranged on the side or top of the machine body 1 according to the needs, as long as the isolation barrier effect of the exhaust passage is effective.

[0034] Among them, as shown in Figure 7As shown in the figure, the middle of the sealing cover 3 is provided with a concave mounting groove 3a, and the fan 2 is mounted in the mounting groove 3a, so that the fan 2 and the sealing cover 3 are more stable, and through reasonable space layout, the compactness of the overall structure is improved, and the installation and layout optimization on the cleaning robot body 1 are facilitated. In addition, the fan 2 can adopt a brushless motor to reduce noise and energy consumption.

[0035] As shown in the figure, Figure 8 As shown in the figure, the sealing cover 3 is arranged on the fan 2 close to one end (i.e. the air outlet end) of the fan blade 2a, so that the fan 2 can be better supported at this end. When the fan blade 2a at the air outlet end rotates at high speed, a large torque is generated, and the sealing cover 3 is fixedly installed (which can be fixed by screws, buckled, etc.) at the air outlet end of the fan 2, which can provide stable support for the fan 2 and ensure the stability of the fan blade 2a during rotation. The sealing cover 3 not only has a supporting function, but also has an isolation function. Because the sealing cover 3 is closely connected with the fan 2, it can prevent the suction of the front end (air outlet end) (such as dust, water mist, etc.) into the rear end area, avoid damaging the related components (such as wiring terminals, etc.) at the rear end (i.e. the machine interior), and ensure the reliability and stability of the fan 2 during operation.

[0036] In this embodiment, the sealing cover 3 is not connected with the fan 2 as in the past, but is sealingly mounted on the fan 2, and the upper end of the negative pressure cavity 1a is closed by the sealing cover 3, so that the suction of the upper end of the negative pressure cavity 1a into the machine interior is prevented, the cleanliness of the machine interior is effectively guaranteed, and the adverse effects of the suction on the machine interior parts are avoided.

[0037] As shown in the figure, Figure 2 As shown in the figure, the sealing cover 3 is provided with an annular weight-reducing groove 3b outside the mounting groove 3a, and a plurality of reinforcing ribs 3c are arranged in the annular weight-reducing groove 3b. The annular weight-reducing groove 3b can reduce the weight of the sealing cover 3 without affecting the strength of the sealing cover 3, and the overall weight of the cleaning robot is reduced, and the presence of the reinforcing ribs 3c ensures that the sealing cover 3 still has sufficient structural strength while reducing weight, improving the reliability and durability of the sealing cover 3.

[0038] The exhaust passage comprises an air duct arranged in the cleaning robot body 1 and connected with the negative pressure cavity 1a, and the air duct discharges the suction material in the negative pressure cavity 1a through the exhaust port 1b extending to the bottom end of the body 1. The exhaust port 1b is arranged at the bottom of the exhaust groove 4 outside the negative pressure cavity 1a, and an opening (which can be a notch area reserved at the upper end of the side wall of the negative pressure cavity 1a) is arranged on the side wall of the negative pressure cavity 1a, one side (the inner side) of the opening is connected with the negative pressure cavity 1a, and the other side (the outer side) is connected with the exhaust groove 4, so as to form the air duct connected with the negative pressure cavity 1a. Through the above arrangement, the suction material sucked into the negative pressure cavity 1a can be directly discharged to the outside of the bottom of the cleaning robot body 1, avoiding the suction material entering the inside of the machine. This not only avoids the damage of the suction material to the internal parts of the machine, such as preventing the dust, water mist and the like in the suction material from contacting the circuit board, interface and other electrical components, reducing the risk of oxidation and damage, but also avoids the residue and accumulation of the suction material in the inside of the machine, ensuring the cleaning and normal operation of the inside of the machine.

[0039] The cleaning robot body 1 is provided with at least two exhaust ports 1b, and the exhaust ports 1b are distributed on opposite sides of the body 1, such as left and right sides or front and back sides (according to the specific design). Of course, the exhaust ports 1b can be distributed on opposite sides of the body 1 based on the fan 2. For example, as shown in the structure of FIG. 2, the cleaning robot body 1 is provided with two exhaust ports 1b, which are arranged on opposite sides of the fan 2. Figures 1-8 The cleaning robot body 1 is provided with at least two exhaust ports 1b, and the exhaust ports 1b are distributed on opposite sides of the body 1, such as left and right sides or front and back sides (according to the specific design). Of course, the exhaust ports 1b can be distributed on opposite sides of the body 1 based on the fan 2. For example, as shown in the structure of FIG. 2, the cleaning robot body 1 is provided with two exhaust ports 1b, which are arranged on opposite sides of the fan 2.

[0040] In general, the negative pressure cavity exhaust structure of the embodiment discharges the suction material in the negative pressure cavity 1a to the outside of the body 1 through the exhaust passage, and uses the isolation barrier formed by the exhaust passage to prevent the suction material from contacting the circuit structure inside the body 1. In this way, the dust, water mist and other components in the suction material are prevented from affecting the internal circuit structure, such as preventing the oxidation and damage of the exposed electrical components such as the circuit board and interface end due to the contact with the suction material, and further causing the contact failure and other faults. Moreover, compared with the prior art, the embodiment avoids the suction material passing through the inside of the machine, greatly reducing the risk of damage of the suction material to the internal circuit structure and other components. This structural design ensures the stability and reliability of the internal circuit system of the cleaning robot, reduces the hidden troubles caused by the suction material, significantly reduces the maintenance frequency caused by the damage of the internal components, prolongs the service life of the cleaning robot, saves the maintenance cost of the user in the long-term use, and improves the overall performance and use efficiency of the cleaning robot. Embodiment 2

[0041] For example, as shown in FIG. 3, the cleaning robot body 1 is provided with two exhaust ports 1b, which are arranged on opposite sides of the fan 2. Figure 1As shown, the embodiment provides a cleaning robot, which comprises a body 1 and the negative pressure cavity exhaust structure of embodiment 1 arranged on the body 1. The bottom of the body 1 is provided with a cleaning turntable 5 for performing a cleaning function, and the cleaning turntable 5 is driven to rotate by a driving module 6. The cleaning turntable 5 is provided with a cavity 5a connected to the negative pressure cavity 1a. Through the suction effect of the fan 2, the air in the cavity 5a can be extracted, thereby forming a negative pressure suction cavity and generating a negative pressure suction force to adsorb the cleaning robot on a surface to be cleaned. The aforementioned surface to be cleaned includes but is not limited to the surface of a panel (for example, a floor, a glass window, a glass curtain wall, etc.).

[0042] Wherein, the negative pressure cavity 1 is usually arranged on the body 1, but it can also be arranged on other components on the body 1. For example, as shown in ​ 、 2 , 4, 5, a fixed shell 7 is installed on the body 1, a gap is reserved between the bottom end of the fixed shell 7 and the top end of the body 1 to form an airflow sandwich gap, the negative pressure cavity 1a is arranged on the fixed shell 7 and communicates with the airflow sandwich gap of the lower space, and the cavity 5a on the cleaning turntable 5 is connected to the negative pressure cavity 1a through the airflow sandwich gap.

[0043] In addition, the exhaust port 1b can be designed to deviate from the cleaning turntable 5 at the position of the bottom of the body 1 of the cleaning robot (i.e. the outlet end of the exhaust port 1b), that is, the outlet end of the exhaust port 1b is located outside the projection area of the cleaning turntable 5 on the bottom of the body 1, which is equivalent to that the projection of the outlet end of the exhaust port 1b on the surface to be cleaned is located outside the projection area of the cleaning turntable 5 on the same surface to be cleaned. In this way, when the suction is discharged from the exhaust port 1b, it can be directly blown to the surface to be cleaned. The suction into the negative pressure cavity 1a contains water mist mixed with dust, which will be discharged towards the surface to be cleaned. The dust adheres to the surface to be cleaned with the help of the water mist, and at this time the cleaning turntable 5 in operation can wipe it clean with the cloth thereon. Unlike discharging the suction from the side or top of the machine, directing the water mist mixed with dust to the surface to be cleaned can effectively prevent the dust from spreading in the air. If it is discharged from the side or top, the dust is easy to form dust raising, polluting other areas, and the water mist mixed with dust is easy to be blown again to the cleaned area on the surface to be cleaned after being discharged, while the machine has left the cleaned area, causing the area to be polluted again and affecting the final cleaning effect. The embodiment directs the water mist and dust to the surface to be cleaned and processes them with the cloth on the cleaning turntable 5, which is equivalent to processing the dust in a relatively closed "cleaning area". This way reduces the dust spreading and secondary pollution to the surface to be cleaned, ensuring the environmental cleanliness and cleaning effect.

[0044] The above embodiment is a preferred implementation scheme of the present application, and any obvious replacement without departing from the concept of the technical scheme is within the protection scope of the present application.

Claims

1. A negative pressure cavity exhaust structure, comprising a negative pressure cavity (1a) and a fan (2) for forming a negative pressure in the negative pressure cavity (1a) to adsorb a cleaning robot to a surface to be cleaned, characterized in that: The exhaust passage is further provided with a sealing cover (3) installed at the air outlet end of the fan (2) and sealing the upper end of the negative pressure cavity (1a), and the exhaust passage is formed by a wind channel provided in the cleaning robot body (1) and connected with the negative pressure cavity (1a), and the wind channel is connected with the negative pressure cavity (1a) through an exhaust port (1b) extending to the bottom end of the body (1) to discharge the suction in the negative pressure cavity (1a) through the bottom of the body (1).

2. The negative pressure cavity exhaust structure according to claim 1, wherein: The exhaust port (1b) is provided at the bottom of an exhaust groove (4) outside the negative pressure cavity (1a), and an opening is provided on the side wall of the negative pressure cavity (1a) and connected with the exhaust groove (4) to form the wind channel.

3. The negative pressure cavity exhaust structure of claim 2, wherein: The exhaust port (1b) is provided at the bottom of an exhaust groove (4) outside the negative pressure cavity (1a), and an opening is provided on the side wall of the negative pressure cavity (1a) and connected with the exhaust groove (4) to form the wind channel.

4. The negative pressure cavity exhaust structure of claim 2, wherein: The exhaust port (1b) is provided at the bottom of an exhaust groove (4) outside the negative pressure cavity (1a), and an opening is provided on the side wall of the negative pressure cavity (1a) and connected with the exhaust groove (4) to form the wind channel.

5. The negative pressure cavity venting structure of claim 2, wherein: The exhaust port (1b) is provided at the bottom of an exhaust groove (4) outside the negative pressure cavity (1a), and an opening is provided on the side wall of the negative pressure cavity (1a) and connected with the exhaust groove (4) to form the wind channel.

6. The negative pressure cavity venting structure of claim 5, wherein: The exhaust port (1b) is provided at the bottom of an exhaust groove (4) outside the negative pressure cavity (1a), and an opening is provided on the side wall of the negative pressure cavity (1a) and connected with the exhaust groove (4) to form the wind channel.

7. A cleaning robot comprising a body (1) and a cleaning turntable (5) arranged at the bottom of the body (1), characterized in that: The exhaust port (1b) is provided at the bottom of an exhaust groove (4) outside the negative pressure cavity (1a), and an opening is provided on the side wall of the negative pressure cavity (1a) and connected with the exhaust groove (4) to form the wind channel.

8. The cleaning robot of claim 7, wherein: The exhaust port (1b) is provided at the bottom of an exhaust groove (4) outside the negative pressure cavity (1a), and an opening is provided on the side wall of the negative pressure cavity (1a) and connected with the exhaust groove (4) to form the wind channel.

9. The cleaning robot of claim 7, wherein: The exhaust port (1b) is provided at the bottom of an exhaust groove (4) outside the negative pressure cavity (1a), and an opening is provided on the side wall of the negative pressure cavity (1a) and connected with the exhaust groove (4) to form the wind channel.

10. The cleaning robot of claim 8, wherein: The exhaust port (1b) is provided at the bottom of an exhaust groove (4) outside the negative pressure cavity (1a), and an opening is provided on the side wall of the negative pressure cavity (1a) and connected with the exhaust groove (4) to form the wind channel.

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