Fan device and cleaning robot

Abstract

This invention belongs to the technical field of intelligent cleaning equipment, and particularly relates to a fan device and a cleaning robot. The fan device is used in a cleaning robot and includes a fan assembly comprising: a fan having a first end and a second end disposed opposite to each other; the first end having an air inlet; and at least one air outlet located between the first and second ends; a first shock-absorbing sleeve covering at least a portion of the first end; the first shock-absorbing sleeve having a vent communicating with the air inlet; and a second shock-absorbing sleeve covering at least a portion of the second end; with at least one air outlet located between the first and second shock-absorbing sleeves. This technical solution solves the problem of unsatisfactory vibration damping and noise reduction effects of fans in cleaning robots.

Description

Technical Field

[0001] This invention belongs to the field of intelligent cleaning equipment technology, and particularly relates to a fan device and a cleaning robot. Background Technology

[0002] Cleaning robots typically use low-speed, quiet fans in their vacuuming systems. When high-speed fans are used, the vibration is significantly amplified, reaching speeds of around 80,000 rpm, leading to high-frequency resonance and instability. Current technology addresses the vibration caused by these high-speed fans by simply encasing the robot in soft rubber. To achieve good shock absorption, this rubber is often quite thick, increasing the robot's overall size. However, if the rubber is too thin, the shock absorption is ineffective, and the fan itself generates noise. Summary of the Invention

[0003] The purpose of this invention is to provide a fan device and a cleaning air man, which aims to solve the problem of unsatisfactory vibration reduction and noise reduction effect of the fan in the existing cleaning robot.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a fan device for a cleaning robot, the fan device including a fan assembly, the fan assembly including: a fan having a first end and a second end disposed opposite to each other, the first end having an air inlet, and at least one air outlet being provided between the first end and the second end; a first shock-absorbing sleeve covering at least a portion of the first end, the first shock-absorbing sleeve having a vent communicating with the air inlet; and a second shock-absorbing sleeve covering at least a portion of the second end, at least one air outlet being located between the first shock-absorbing sleeve and the second shock-absorbing sleeve.

[0005] Optionally, the first damping sleeve includes a first sleeve body and multiple first ribs, the multiple first ribs being evenly distributed circumferentially on the outer circumferential surface of the first sleeve body, and each first rib extending along the axial direction of the first sleeve body.

[0006] Optionally, the second damping sleeve includes a second sleeve body and multiple second ribs, the multiple second ribs being evenly distributed circumferentially on the outer circumferential surface of the second sleeve body, and each second rib extending along the axial direction of the second sleeve body.

[0007] Optionally, the second damping sleeve also includes multiple third ribs, which are evenly distributed circumferentially on the outer end face of the second sleeve, and the multiple third ribs are connected to the multiple second ribs in a one-to-one correspondence.

[0008] Optionally, the fan assembly further includes: a fan cover having a receiving cavity for housing the fan, and a first damping sleeve and a second damping sleeve both located between the fan and the cavity wall of the receiving cavity.

[0009] Optionally, the fan cover also has an air outlet channel communicating with the receiving cavity, the air outlet channel being configured corresponding to the air outlet of the fan; the air outlet channel has a first side wall and a second side wall arranged opposite to each other, the first side wall being connected to the cavity wall of the receiving cavity and extending in the tangential direction of the receiving cavity, the second side wall being connected to the cavity wall of the receiving cavity and forming a partition rib at the connection, the partition rib being used to block airflow from entering the receiving cavity.

[0010] Optionally, the Shore hardness of the first damping sleeve is 20 to 30 degrees.

[0011] Optionally, the Shore hardness of the second damping sleeve is 20 to 30 degrees.

[0012] Optionally, the first damping sleeve is interference-fitted with the first end of the fan, and the second damping sleeve is interference-fitted with the second end of the fan.

[0013] Optionally, the fan cover has an air inlet for allowing airflow to flow in and an air outlet for allowing airflow to flow out, the air inlet being connected to a vent and the air outlet being the outlet of an air outlet channel; the fan device further includes: an air inlet chamber assembly connected to the air inlet; and a silencer chamber assembly connected to the air outlet.

[0014] According to another aspect of the present invention, a cleaning robot is provided, comprising a robot body and a fan device mounted on the robot body, wherein the fan device is the aforementioned fan device.

[0015] Optionally, the cleaning robot also includes: a cleaning component installed at the bottom of the robot body for cleaning the floor; and a trash can detachably installed on the robot body, the trash can having a first connection port and a second connection port, the first connection port connecting to the outside of the robot body and located behind the cleaning component along the forward direction of the cleaning robot, and the second connection port connecting to a vent.

[0016] The present invention has at least the following beneficial effects:

[0017] During operation, the fan generates vibrations. By using a first damping sleeve to enclose the first end of the fan and a second damping sleeve to cover the second end, the fan's vibrations are transmitted to both sleeves. This causes the first and second damping sleeves to undergo elastic deformation, reducing the outward transmission of vibrations and achieving vibration reduction. In this way, the fan is stably assembled, and the fan's vibrations are converted into elastic deformation of the first and second damping sleeves, achieving vibration reduction. Reduced vibration helps reduce noise, thus achieving noise reduction. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an exploded view of the fan device according to an embodiment of the present invention;

[0020] Figure 2 This is an exploded view of the fan assembly in the fan device according to an embodiment of the present invention;

[0021] Figure 3 This is a first cross-sectional view of the fan assembly in the fan device according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the first shock-absorbing sleeve in the fan device according to an embodiment of the present invention;

[0023] Figure 5 For along Figure 4 The front view in the direction of the middle arrow S;

[0024] Figure 6 This is a schematic diagram of the structure of the second shock-absorbing sleeve of the fan device according to an embodiment of the present invention;

[0025] Figure 7 This is a second cross-sectional view of the fan assembly in the fan device according to an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the fan structure in the fan device according to an embodiment of the present invention;

[0027] Figure 9 This is a cross-sectional view of the fan cover, the first shock-absorbing sleeve, and the silencing chamber assembly of the fan device according to an embodiment of the present invention.

[0028] The following are the labeling elements in the figure:

[0029] 100. Fan assembly; 10. Inlet chamber assembly; 11. Inlet chamber outlet; 20. Fan assembly; 21. Fan cover; 211. Upper shell cover; 212. Lower shell cover; 213. Receiving cavity; 22. Fan; 221. Air inlet; 222. Air outlet; 23. First shock absorber sleeve; 231. First rib; 24. Second shock absorber sleeve; 241. Second rib; 242. Third rib; 25. Sealing ring; 201. Airflow inlet; 202. Airflow outlet; 203. Separating rib; 204. First side wall; 205. Second side wall; 30. Silencer assembly; 31. Top cover; 32. Main shell; 301. Air outlet channel. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Furthermore, the terms "first," "second," etc., 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 with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," 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 invention according to the specific circumstances.

[0034] like Figures 1 to 9 As shown, the present invention provides a fan device 100 and uses the fan device 100 in a cleaning robot. Specifically, the fan device 100 includes a fan assembly 20, which includes a fan 22, a first shock-absorbing sleeve 23, and a second shock-absorbing sleeve 24. The second shock-absorbing sleeve 24 is paired with the first shock-absorbing sleeve 23. The fan 22 has a first end and a second end disposed opposite to each other. The first end is provided with an air inlet 221, and at least one air outlet 222 is provided between the first end and the second end. The first shock-absorbing sleeve 23 covers at least a portion of the first end and has a vent that communicates with the air inlet 221. The second shock-absorbing sleeve 24 covers at least a portion of the second end, and at least one air outlet 222 is located between the first shock-absorbing sleeve 23 and the second shock-absorbing sleeve 24.

[0035] During operation, the fan 22 generates vibration. Because the first damping sleeve 23 covers the first end of the fan 22 and the second damping sleeve 24 is fitted onto the second end, the vibration of the fan 22 is transmitted to the first and second damping sleeves 23 and 24. This causes the first and second damping sleeves 23 and 24 to undergo elastic deformation, reducing the outward transmission of the fan 22's vibration and achieving vibration reduction. In this way, the fan 22 is stably assembled, and the vibration of the fan 22 is converted into the elastic deformation of the first and second damping sleeves 23 and 24 to achieve vibration reduction. Reduced vibration helps to reduce noise, thus achieving noise reduction.

[0036] like Figure 2 , Figure 4 and Figure 5 As shown, the first damping sleeve 23 includes a first sleeve body (unlabeled) and multiple first ribs 231. The first sleeve body serves as the base, and the multiple first ribs 231 are evenly distributed circumferentially on the outer circumferential surface of the first sleeve body (i.e., the multiple first ribs 231 are evenly distributed around the central axis of the first sleeve body). Each first rib 231 extends along the axial direction of the first sleeve body. Figure 6 As shown, the second damping sleeve 24 includes a second sleeve body (unlabeled) and multiple second ribs 241. The multiple second ribs 241 are evenly distributed circumferentially on the outer circumferential surface of the second sleeve body (i.e., the multiple second ribs 241 are evenly distributed around the central axis of the second sleeve body), and each second rib 241 extends along the axial direction of the second sleeve body. During the operation of the fan 22, radial vibration is generated. The radial vibration is first transmitted to the first sleeve body and the second sleeve body. Then, the first sleeve body continues to transmit the vibration to the first rib 231, and the second sleeve body continues to transmit the vibration to the second ribs 241. Both the first rib 231 and the second rib 241 undergo elastic deformation. That is, the vibration of the fan 22 is converted into the elastic deformation of the first rib 231 and the second rib 241, which reduces the outward transmission of the vibration of the fan 22 and achieves the purpose of radial damping.

[0037] Furthermore, the second damping sleeve 24 also includes multiple third ribs 242, which are evenly distributed circumferentially on the outer end face of the second sleeve (i.e., the multiple third ribs 242 are evenly distributed around the central axis of the second sleeve). The multiple third ribs 242 are connected one-to-one with the multiple second ribs 241. During the operation of the fan 22, axial vibration is generated, which is transmitted to the multiple third ribs 242, causing the third ribs 242 to undergo elastic deformation. This transforms the axial vibration of the fan 22 into the elastic deformation of the third ribs 242, thereby reducing the outward transmission of the axial vibration of the fan 22 and achieving the purpose of axial vibration reduction.

[0038] like Figure 2 , Figure 3 and Figure 7As shown, the fan assembly 20 also includes a fan cover 21, which has a receiving cavity 213. Specifically, the fan cover 21 includes an upper cover 211 and a lower cover 212, which together form the receiving cavity 213. The receiving cavity 213 houses the fan 22, and the first damping sleeve 23 and the second damping sleeve 24 are both located between the fan 22 and the cavity wall of the receiving cavity 213. Figure 3 As shown, the first damping sleeve 23 is interference-fitted with the first end of the fan 22, and the second damping sleeve 24 is interference-fitted with the second end of the fan 22. Furthermore, the fan cover 21 also has an air outlet channel 301 that communicates with the receiving cavity 213. That is, the air outlet channel 301 is also formed when the upper cover 211 and the lower cover 212 are closed. The air outlet 301 is set to correspond to the air outlet 222 of the fan 22. The air output by the fan 22 first enters the receiving cavity 213, and then continues to be blown from the inlet of the corresponding air outlet 301. The air outlet 301 has a first side wall 204 and a second side wall 205 arranged opposite to each other. The first side wall 204 is connected to the cavity wall of the receiving cavity 213 and extends in the tangential direction of the receiving cavity 213. The second side wall 205 is connected to the cavity wall of the receiving cavity 213 and forms a partition rib 203 at the connection. The partition rib 203 is used to block the airflow from entering the receiving cavity 213. After the air output by the fan 22 rotates in the receiving cavity 213, it enters the air outlet 301 from the first side wall 204. Since the airflow initially entering the air outlet 301 still has a rotational tendency, it blows towards the second side wall 205. At this time, the partition rib 203 can block these airflows, thereby preventing the airflow that has entered the air outlet 301 from flowing back into the receiving cavity 213.

[0039] The fan 22 has three circumferential air outlets, which simultaneously output airflow. The airflow reaches the receiving cavity 213, which is circular. An air guiding device (not shown) is installed within the receiving cavity 213 to guide the airflow in a clockwise direction within the receiving cavity 213 (e.g., Figure 7 As shown), the airflow then flows along the first sidewall 204 to the air outlet channel 301, and the partition rib 203 formed at the junction of the second sidewall 205 and the cavity wall of the receiving cavity 213 can block the airflow with a rotational tendency in the air outlet channel 301 and prevent the airflow from flowing back into the receiving cavity 213.

[0040] like Figure 1 and Figure 9As shown, the fan cover 21 has an air inlet 201 for airflow in and an air outlet 202 for airflow out. The air inlet 201 is connected to the vent, and the air outlet 202 is the outlet of the air outlet channel 301. Furthermore, the fan device 100 also includes an air inlet chamber assembly 10 and a silencer chamber assembly 30. The silencer chamber assembly 30 includes a top cover 31 and a main shell 32. The top cover 31 covers the main shell 32 and forms an airflow channel for noise reduction. The air inlet outlet 11 of the air inlet chamber assembly 10 is connected to the air inlet 201, and the inlet of the silencer chamber assembly 30 is connected to the air outlet 202. A good sealing effect is achieved between the inlet and the air outlet 202 of the silencer chamber assembly 30 by mounting a sealing ring 25. Additionally, sound-absorbing material, such as sound-absorbing cotton, is installed in the airflow channel of the silencer chamber assembly 30. During the airflow through the silencer chamber assembly 30, wind noise is generated. At this time, the sound-absorbing material absorbs the generated wind noise, achieving the purpose of noise reduction. Furthermore, such as Figure 9 As shown, in order to lengthen the airflow channel of the anechoic chamber assembly 30, the airflow channel is a multi-segment combined channel with a bend-shaped transition between adjacent segments. In this way, after the airflow enters and exits the airflow channel from the fan assembly 20, the extended length of the airflow channel can avoid the concentrated release of airflow pressure, thereby avoiding excessive noise caused by the concentrated release of airflow pressure in the airflow channel, which helps to reduce the noise generated by the airflow in the airflow channel.

[0041] In this embodiment, the Shore hardness of the first damping sleeve 23 is 20 to 30 degrees, and the Shore hardness of the second damping sleeve 24 is 20 to 30 degrees.

[0042] According to another aspect of the present invention, a cleaning robot is provided. Specifically, the cleaning robot includes a robot body and a fan device 100 mounted on the robot body, particularly the aforementioned fan device 100.

[0043] In a cleaning robot, this fan device 100 is used. During operation, the fan 22 generates vibrations. Because a first damping sleeve 23 covers the first end of the fan 22, and a second damping sleeve 24 covers the second end, the vibrations of the fan 22 are transmitted to the first and second damping sleeves 23 and 24. This causes the first and second damping sleeves 23 and 24 to undergo elastic deformation, reducing the outward transmission of vibrations from the fan 22 and achieving vibration reduction. In this way, the fan 22 is stably assembled, and the vibrations of the fan 22 are converted into elastic deformations of the first and second damping sleeves 23 and 24, achieving vibration reduction. Reduced vibration helps to reduce noise, thus achieving noise reduction.

[0044] This cleaning robot also includes a cleaning component (not shown) and a waste collection bin (not shown). The cleaning component is installed at the bottom of the robot body and is used to clean the floor. The waste collection bin is detachably installed on the robot body and has a first connecting port and a second connecting port. The first connecting port connects to the outside of the robot body and is located behind the cleaning component along the robot's forward direction. The second connecting port connects to a ventilation opening. When the cleaned waste reaches the ground position between the cleaning component and the waste collection bin, the fan 22 operates to draw in airflow, which in turn draws the waste from the first connecting port into the waste collection bin for temporary storage. As the amount of waste stored in the waste collection bin gradually increases, the waste collection bin can be removed and the waste emptied.

[0045] High-speed fans generate noise during operation. Existing cleaning robots typically wrap the fan with sound-absorbing cotton, which reduces noise but significantly impacts airflow and can even disrupt normal operation. In contrast, the cleaning robot of this invention uses a first damping sleeve 23 and a second damping sleeve 24 to assemble the fan 22, converting the fan's vibration into the deformation of the first and second ribs 231 and 241. The damping sleeves 23 and 24 completely avoid the fan's outlet 222, preventing any obstruction of airflow. This allows for smooth airflow from the outlet, further reducing fan vibration. The smooth airflow and reduced fan vibration effectively lower the noise generated by the fan, resulting in superior noise reduction.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fan device for a cleaning robot, the fan device comprising a fan assembly, characterized in that, The wind turbine assembly includes: A fan has a first end and a second end disposed opposite to each other, the first end is provided with an air inlet, and at least one air outlet is provided between the first end and the second end; A first shock-absorbing sleeve, the first shock-absorbing sleeve covering at least a portion of the first end, the first shock-absorbing sleeve having a vent communicating with the air inlet, the first shock-absorbing sleeve comprising a first sleeve body and a plurality of first ribs, the plurality of first ribs being circumferentially and evenly distributed on the outer peripheral surface of the first sleeve body, each first rib extending axially along the first sleeve body; and The second shock-absorbing sleeve covers at least a portion of the second end. The at least one air outlet is located between the first shock-absorbing sleeve and the second shock-absorbing sleeve. The second shock-absorbing sleeve includes a second sleeve body, multiple second ribs, and multiple third ribs. The multiple second ribs are evenly distributed circumferentially on the outer peripheral surface of the second sleeve body. Each second rib extends along the axial direction of the second sleeve body. The multiple third ribs are evenly distributed circumferentially on the outer end surface of the second sleeve body. The multiple third ribs are connected to the multiple second ribs in a one-to-one correspondence. The fan operates to deliver airflow. The airflow direction from the air inlet to the air outlet is perpendicular to the extension direction of the third rib. The airflow is blown to the inner wall of the second end and then turns to blow out from the air outlet. The airflow direction from the air outlet is perpendicular to the extension directions of the first rib and the second rib.

2. The fan device according to claim 1, characterized in that, The wind turbine assembly also includes: The fan cover has a receiving cavity that houses the fan, and the first shock-absorbing sleeve and the second shock-absorbing sleeve are both located between the fan and the cavity wall of the receiving cavity.

3. The fan device according to claim 2, characterized in that, The fan cover also has an air outlet channel communicating with the receiving cavity, and the air outlet channel is provided corresponding to the air outlet of the fan; The air outlet channel has a first sidewall and a second sidewall arranged opposite to each other. The first sidewall is connected to the cavity wall of the receiving cavity and extends in the tangential direction of the receiving cavity. The second sidewall is connected to the cavity wall of the receiving cavity and forms a partition rib at the connection. The partition rib is used to block airflow from entering the receiving cavity.

4. The fan device according to claim 1, characterized in that, The Shore hardness of the first shock absorber is 20 to 30 degrees.

5. The fan device according to claim 1, characterized in that, The Shore hardness of the second shock absorber is 20 to 30 degrees.

6. The fan device according to claim 1, characterized in that, The first damping sleeve is interference-fitted with the first end of the fan, and the second damping sleeve is interference-fitted with the second end of the fan.

7. The fan device according to claim 3, characterized in that, The fan cover has an air inlet for airflow to flow in and an air outlet for airflow to flow out. The air inlet is connected to the vent, and the air outlet is the outlet of the air outlet channel. The fan unit also includes: An air inlet assembly, wherein the air inlet assembly is connected to the airflow inlet; and A silencer assembly, wherein the inlet of the silencer assembly is connected to the airflow outlet.

8. A cleaning robot, comprising a robot body and a fan device installed on the robot body, characterized in that, The fan device is the fan device according to any one of claims 1 to 7.

9. The cleaning robot according to claim 8, characterized in that, The cleaning robot also includes: A cleaning component, which is installed on the bottom of the robot body, is used for cleaning floors; A waste collection container is detachably mounted on the robot body. The waste collection container has a first connection port and a second connection port. The first connection port connects to the outside of the robot body and is located behind the cleaning component along the forward direction of the cleaning robot. The second connection port connects to the ventilation port.

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