Cleaning robot

Abstract

The utility model relates to the technical field of cleaning devices, in particular to a cleaning robot which comprises a machine shell, a heat dissipation air channel, a dust collection air channel, a dust collection fan and a driving element. Under the action of the dust collection fan, first airflow enters the dust collection air duct from the first air inlet and is discharged from the first air outlet; the heat dissipation air channel comprises a first pipeline section extending in the flowing direction of the first airflow, and one end of the first pipeline section is the second air outlet; the first air flow flows through the peripheral side of the second air outlet to drive the second air flow to flow into the heat dissipation air duct from the second air inlet, passes through the driving element, flows out of the second air outlet, converges into the first air flow and is discharged from the first air outlet; compared with the prior art, the cleaning robot has the advantages that the driving element is actively subjected to air-cooling heat dissipation equivalently, during active heat dissipation, the power source is the power source of the cleaning robot, no fan needs to be additionally arranged for air-cooling heat dissipation, and cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning devices, and in particular to a cleaning robot. Background Art

[0002] During the operation of the cleaning robot, the driving elements (such as motors) that drive the cleaning parts usually generate a large amount of heat. If the heat generated by the driving elements is not discharged from the body in time, it may cause the driving elements to overheat and damage the driving elements; or, the heat is retained inside the body, causing damage to other components in the body. In the prior art, heat can be dissipated passively through heat sinks and heat dissipating silicone grease, but the heat dissipation effect is limited. Alternatively, liquid cooling and other methods can be used to dissipate the heat of the driving elements, but the use of liquid cooling and other methods requires additional liquid cooling equipment to be set up near the driving elements, thereby occupying the space inside the cleaning robot and affecting the compactness of the internal structure of the cleaning robot. Utility Model Content

[0003] The utility model aims to provide a cleaning robot, which can further improve the heat dissipation effect of the driving mechanism on the basis of ensuring the compactness of the internal structure arrangement of the cleaning robot.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A cleaning robot comprises a housing, a heat dissipation duct, a dust collection duct, a dust collection fan and a driving element for driving a cleaning member; the driving element is arranged in the heat dissipation duct, and the dust collection fan is arranged in the dust collection duct;

[0006] One end of the dust suction duct is a first air inlet connected to the surface to be cleaned, and the other end is a first air outlet provided on the housing; under the action of the dust suction fan, the first airflow enters the dust suction duct from the first air inlet, and then is discharged from the first air outlet;

[0007] One end of the heat dissipation duct is a second air inlet, and the other end is a second air outlet. The heat dissipation duct includes a first pipe section extending along the first air flow direction, and one end of the first pipe section is the second air outlet; wherein,

[0008] The first airflow flows through the periphery of the second air outlet, driving the second airflow to flow from the second air inlet into the heat dissipation duct, passing through the driving element, and then flowing out from the second air outlet, merging into the first airflow and being discharged from the first air outlet.

[0009] As an optional embodiment of the utility model, the dust suction duct includes a second pipe section arranged between the dust suction fan and the first air outlet;

[0010] The second pipe segment is sleeved in the first pipe segment, or the first pipe segment is sleeved in the second pipe segment.

[0011] As an optional implementation of the utility model, the dust suction duct includes a second pipe section arranged between the dust suction fan and the first air outlet; the second pipe section is surrounded by a tube shell, and the tube shell is sealed and connected to the casing.

[0012] As an optional embodiment of the utility model, the dust suction duct includes a second pipe section arranged between the dust suction fan and the first air outlet; the second pipe section is enclosed by a tube shell, and the tube shell forms a first exhaust pipe opening for the first air flow to flow out; there is a gap between the first exhaust pipe opening and the first air outlet;

[0013] Taking any plane perpendicular to the flow direction of the first air flow as the designated plane, a first projection area of ​​the first air outlet on the designated plane covers a second projection area of ​​the first exhaust pipe opening on the designated plane;

[0014] The second air outlet is connected to the gap, so that when the first airflow flows through the gap, it drives the second airflow to flow in from the second air inlet, flows into the gap through the driving element and the second air outlet, merges into the first airflow, and is discharged from the first air outlet.

[0015] As an optional implementation of the present invention, the second air inlet is arranged at a position close to the driving element.

[0016] As an optional implementation manner of the present utility model, the channel formed between the first pipe segment and the second pipe segment has a raised portion on the inner wall.

[0017] As an optional embodiment of the utility model, the side wall of the protrusion facing the first air inlet is inclined to form a first guide surface, and / or the side wall of the protrusion facing away from the first air inlet is inclined to form a second guide surface.

[0018] As an optional implementation manner of the present utility model, the first guide surface and / or the second guide surface is an arc-shaped surface.

[0019] As an optional implementation manner of the present utility model, the cross-sectional area of ​​the channel formed between the first pipeline segment and the second pipeline segment is equal to the cross-sectional area of ​​the first pipeline segment.

[0020] As an optional implementation of the present utility model, the first air inlet is provided with a filter.

[0021] As an optional implementation of the present utility model, the cleaning robot includes a rolling brush chamber, and the first air inlet of the dust suction duct is the dust suction port of the rolling brush chamber.

[0022] As an optional implementation manner of the present invention, the cleaning member is a track cloth, and the driving element is a motor that drives the track cloth to rotate.

[0023] As an optional embodiment of the utility model, one end of the first pipe section away from the second air outlet constitutes a first air inlet pipe opening, a drainage pipe is provided between the first air inlet pipe opening and the driving element, and the drainage pipe is surrounded by a pipe shell; one end of the drainage pipe is located close to the driving element, and the other end is connected to the first air inlet pipe opening.

[0024] As an optional embodiment of the utility model, one end of the second pipe section close to the first air outlet is a first exhaust pipe opening, and the first exhaust pipe opening of the second pipe section is closer to the first air outlet than the second air outlet of the first pipe section.

[0025] The utility model also provides another cleaning robot, the cleaning robot comprises a housing, a heat dissipation channel, a dust suction duct, a dust suction fan and a driving element for driving a cleaning member; the driving element is arranged in the heat dissipation duct, and the dust suction fan is arranged in the dust suction duct;

[0026] One end of the dust suction duct is a first air inlet connected to the surface to be cleaned, and the other end is a first air outlet provided on the housing; the dust suction duct includes a second pipe section provided between the dust suction fan and the first air outlet; the second pipe section is surrounded by a tube shell; the tube shell is formed with a first exhaust pipe opening for the first air flow to flow out, and there is a gap between the first exhaust pipe opening and the first air outlet, wherein,

[0027] Taking any plane perpendicular to the flow direction of the first air flow as the designated plane, a first projection area of ​​the first air outlet on the designated plane covers a second projection area of ​​the first exhaust pipe opening on the designated plane;

[0028] The housing is provided with a second air inlet, and the driving element is arranged on the air flow path between the second air inlet and the gap, so that when the first air flow flows through the gap, it drives the second air flow to flow in from the second air inlet, pass through the driving element, flow into the gap, and flow out from the first air outlet together with the first air flow.

[0029] As an optional implementation of the present invention, the second air inlet is arranged at a position close to the driving element.

[0030] Compared with the prior art, the advantages of adopting this solution are:

[0031] The solution provided by the utility model utilizes the airflow generated by the vacuum motor during the operation of the cleaning robot to guide the external airflow into the interior of the cleaning robot and flow through the surrounding side of the driving element, so as to achieve cyclic and continuous air cooling and heat dissipation of the driving element during the operation of the cleaning robot, and discharge the hot airflow out of the body, thereby improving the heat dissipation effect of the driving element while further avoiding the accumulation of heat inside the body. In addition, the heat dissipation structure provided by the utility model only requires a simple air duct arrangement adjustment of the vacuum duct inside the body of the cleaning robot, and the heat dissipation duct is flexibly designed, which reduces the impact on the arrangement of components inside the cleaning robot while ensuring the heat dissipation effect. At the same time, the heat dissipation duct can also make full use of the gap inside the body, without occupying more space inside the body, thereby ensuring the compactness of the internal space arrangement of the cleaning robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 It is a schematic diagram of the structure of the utility model;

[0034] Figure 2 This is a schematic diagram of the bottom structure of the utility model;

[0035] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0036] Figure 4 It is a schematic diagram of the flow paths of the first airflow and the second airflow in the working state of the utility model;

[0037] Figure 5 It is a partial top cross-sectional view of the utility model at the position of the dust suction fan (an implementation method in which the second pipe section is directly connected to the first air outlet);

[0038] Figure 6 It is a partial top cross-sectional view of the utility model at the dust suction fan position (an implementation method of setting the gap between the second pipe section and the first air outlet);

[0039] Figure 7 This is a schematic structural diagram of an embodiment of the utility model equipped with a drainage pipe;

[0040] Figure 8 It is a schematic diagram of the structure of the structural member in the utility model;

[0041] Fig. 9The cross section of the structural member in the utility model Figure 1 ;

[0042] Fig.10 It is a schematic diagram of the front structure of the structural member in the utility model;

[0043] Fig.11 The cross section of the structural member in the utility model Figure 2 ;

[0044] Fig.12 This is a schematic diagram of the bottom structure of another embodiment of the utility model;

[0045] Fig.13 This is a schematic diagram of the internal structure of another embodiment of the utility model;

[0046] Fig.14 It is a partial top cross-sectional view of another embodiment of the utility model at the position of the dust suction fan. DETAILED DESCRIPTION

[0047] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0048] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operate in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0049] See also Figure 1-11 As shown, this embodiment provides a cleaning robot, which can be a sweeping robot, a sweeping and mopping robot, etc. The cleaning robot may include a body, a walking system, a cleaning module, a control system, a sensing system, etc. Among them, a housing 1 is provided outside the body, and a mounting cavity is provided inside the body for installation of some structures. The shape of the body is not limited, and can be, but not limited to, round, D-shaped, triangular, or other shapes.

[0050] The walking system is arranged on the body, and is used to drive the body to realize the self-moving walking function on the surface to be cleaned. Among them, the surface to be cleaned can be but is not limited to the surface or scene of objects such as the ground and the desktop. For the convenience of expression, the surface to be cleaned below is described using the ground as an example. The cleaning module includes a dry cleaning module or a wet cleaning module, or includes both a dry cleaning module and a wet cleaning module. Regarding the arrangement of the dry cleaning module and the wet cleaning module on the body, when the cleaning robot is performing a cleaning task, it can sweep first and then mop the floor. In this case, in the forward direction of the cleaning robot, the wet cleaning module is located behind the dry cleaning module.

[0051] The dry cleaning module includes a roller brush, a dust box and a dust suction fan. A roller brush chamber 11 is provided at the bottom of the machine body. The roller brush is rotatably arranged in the roller brush chamber 11. The dust suction port on the roller brush chamber 11 is connected to the dust inlet of the dust box. The airflow outlet of the dust box is connected to the dust suction fan 5. The housing 1 is provided with a first air outlet 22, and the dust suction fan 5 is connected to the first air outlet 22. A filter is provided on the airflow outlet of the dust box to filter dust and prevent dust from entering the dust suction fan 5. During the rotation process, the roller brush moves the garbage around and in front of it to the dust suction port. The garbage at the dust suction port is sucked into the dust box under the negative pressure generated by the dust suction fan 5, and then filtered by the filter, flows out from the airflow outlet of the dust box, enters the dust suction fan 5, and then flows out of the machine body through the first air outlet 22, thereby achieving the cleaning function of the surface to be cleaned.

[0052] The wet cleaning module includes a driving motor and a wet cleaning member. The wet cleaning member may include a cleaning disc and a rag disposed on the bottom of the cleaning disc. The driving motor drives the cleaning disc to move, so as to drive the rag to vibrate or rotate back and forth. The rag forms friction with the ground during the movement to clean the surface to be cleaned. Alternatively, the wet cleaning member includes a rotating shaft and a tracked rag 13. The tracked rag 13 is sleeved on the rotating shaft. The driving motor 14 drives the rotating shaft to move, so as to drive the tracked rag 13 to move. The tracked rag 13 forms friction with the ground during the movement to clean the surface to be cleaned.

[0053] The cleaning module also includes edges located on one or both sides of the front part of the body. Along the forward direction of the cleaning robot, the side brush 15 is located in front of the dry cleaning module, and at least part of the side brush 15 extends out of the edge of the body. The side brush 15 rotates under the drive of the driving mechanism. During the rotation of the side brush 15, the garbage in front of and around the surface to be cleaned is moved toward the inside of the body, so that the roller brush of the dry cleaning module located at the rear can clean up the garbage and be sucked into the dust box by the dust suction fan.

[0054] It can be seen from the above description that the cleaning parts of the cleaning robot (such as rags, roller brushes, and side brushes) all need to move under the drive of the driving element to achieve the cleaning of the surface to be cleaned. The driving element may include a driving motor 14, of course, and may also include other driving structures, which are not limited here. During operation, the driving element may generate a large amount of heat. If the heat generated by the driving element is not dissipated to the outside of the body in time, the driving element may overheat, causing damage to the driving element; or, the heat is retained inside the body, causing damage to other components in the body. In the prior art, heat can be dissipated passively by means of heat sinks and heat dissipating silicone grease, but the heat dissipation effect is limited. Alternatively, the driving element is cooled by liquid cooling or other methods, but the use of liquid cooling or other methods requires additional liquid cooling equipment to be set near the driving element, thereby occupying the space inside the cleaning robot and affecting the compactness of the internal structure arrangement of the cleaning robot.

[0055] Accordingly, the embodiment of the present specification provides a cleaning robot, which may be provided with at least a housing 1, a heat dissipation duct, a dust suction duct, a dust suction fan 5, and a driving element for driving a cleaning member. Figure 2 , Figure 3 As shown, when the cleaning member is a crawler rag 13, the driving element is a motor 14 that drives the rotating shaft of the crawler rag 13 to rotate. The driving element is arranged in the heat dissipation air duct, and the dust suction fan 5 is arranged in the dust suction air duct.

[0056] One end of the dust suction duct is a first air inlet 21 connected to the surface to be cleaned, and the other end is a first air outlet 22 provided on the housing 1. The first air inlet 21 of the dust suction duct is the dust suction port of the dust suction duct. Figure 2 As shown, the first air outlet 22 can be arranged on the peripheral wall of the casing 1 and located at the rear side of the body. The first air outlet 22 is arranged on the peripheral side and the rear side of the body, which can minimize the airflow blowing dust on the surface to be cleaned and affect the cleaning effect.

[0057] like Figure 2 As shown, when the cleaning robot uses a roller brush to perform dry cleaning, the first air inlet 21 of the dust suction duct can be the dust suction port of the roller brush chamber 11. Figure 3 As shown, the dust suction duct may include a rolling brush chamber 11, a dust box chamber 12 for installing a dust box, and a dust suction fan 5 which are connected in sequence.

[0058] When the cleaning robot performs cleaning work, the dust suction fan 5 is turned on to perform dust suction. Under the action of the dust suction fan 5, as shown in FIG. Figure 4As shown, the first airflow J1 enters the dust suction duct from the first air inlet 21 and is discharged from the first air outlet 22. Specifically, the first airflow J1 passes through the first air inlet 21-rolling brush cavity 11-dust box cavity 12-dust suction fan 5-first air outlet 22 in sequence.

[0059] Combination Figure 3 and Figure 4 As shown, one end of the heat dissipation duct is a second air inlet 31, and the other end is a second air outlet 321. The second air inlet 31 can be provided on the peripheral wall of the housing 1, or can be provided at other positions, such as the bottom wall of the housing 1. The second air inlet 31 is preferably provided at a position close to the driving element (i.e., the motor 5), so that the second airflow J2 can pass through the driving element immediately after entering the body from the outside of the body, effectively utilizing the external cold air to dissipate heat from the driving element, thereby improving the heat dissipation efficiency.

[0060] like Figure 3 and Fig. 9 As shown, the heat dissipation duct includes a first pipe section 32 extending along the flow direction of the first airflow J1 . The first pipe section 32 is a pipe surrounded by a tube shell, and one end of the first pipe section 32 constitutes a second air outlet 321 .

[0061] When the dust suction fan 5 is working, Figure 3 , Figure 4 and Fig.11 As shown, a first airflow J1 will be formed in the dust collection air duct and circulate along the dust collection air duct. When the first airflow J1 flows through the peripheral side of the second air outlet 321, the gas flow at the second air outlet 321 will be driven by the viscosity of the gas, thereby driving the airflow of the first pipe section 32. The first pipe section 32 is connected to the second air inlet 31. The airflow of the first pipe section 32 can further drive the airflow outside the machine body to enter the machine body from the second air inlet 31 to form the second airflow J2. The driving element is arranged in the heat dissipation air duct, so that the second airflow J2 can flow through the driving element, take away the heat of the driving element, and achieve the purpose of heat dissipation. The two sides of the second airflow J2 form a high-pressure and low-speed airflow layer relative to the first airflow J1, that is, the second airflow J2 is a high-pressure and low-speed airflow, so that after the second airflow J2 flows out of the second air outlet 321, it further converges to the first airflow J1 and flows out of the first air outlet 22 with the first airflow J1.

[0062] Since the first pipe section 32 can be connected to the outside through the second air inlet 31, if the angle between the first pipe section 32 and the first airflow J1 is improperly set, part of the first airflow J1 may flow directly to the first pipe section 32, resulting in the failure to generate the second airflow J2. By extending the portion of the heat dissipation duct near the second air outlet 321 (i.e., the first pipe section 32) along the direction of the first airflow J1, the first airflow J1 can flow along the extension direction of the first pipe section 32 when it is near the second air outlet 321, thereby avoiding the phenomenon that the first airflow J1 flows to the first pipe section 32, and preventing the high-speed airflow from having an adverse effect on the driving components in the machine body. At the same time, when the second airflow J2 is near the second air outlet 321, the airflow flows along the direction of the first airflow J1, and the airflow discharged from the second air outlet 321 can be in the same direction as the first airflow J1, and when it merges into the first airflow J1, it will not generate a large airflow impact on the first airflow J1, so that the converged airflow can be effectively and quickly discharged from the machine body.

[0063] The solution provided in the above-mentioned embodiments of this specification utilizes the airflow generated by the vacuum motor during the operation of the cleaning robot to guide the external airflow into the interior of the cleaning robot and flow through the surrounding side of the driving element, so as to achieve cyclic and continuous air cooling and heat dissipation of the driving element during the operation of the cleaning robot, and discharge the hot air flow out of the body, thereby improving the heat dissipation effect of the driving element while further avoiding the accumulation of heat inside the body, thereby ensuring the heat dissipation effect of the whole machine. In addition, the part of the heat dissipation duct adjacent to the second air outlet is designed to extend along the direction of the first airflow, which can also prevent the first airflow from flowing arbitrarily and causing adverse effects on the components in the body; at the same time, the use of this structural design can also effectively guide the second airflow to be quickly discharged from the body with the first airflow, while achieving heat dissipation of the driving element, ensuring the rapid discharge of the hot airflow and avoiding the hot airflow from affecting other components in the body.

[0064] In the embodiments of this specification, the portion outside the first pipe section 32 in the heat dissipation duct can be completely formed by the gaps between the components in the casing; it can also be partially formed by the gaps between the components in the casing and partially formed by the tube shell; it can also be entirely formed by the tube shell. Those skilled in the art can flexibly configure it according to the space requirements inside the body. The space for arranging components inside the cleaning robot is relatively limited, making it difficult to set up heat dissipation ducts for the drive elements inside the body. The above structure provided in the embodiments of this specification can further reduce the impact on the arrangement of components inside the cleaning robot while ensuring the heat dissipation effect, thereby improving the simplicity and flexibility of the heat dissipation design of the cleaning robot. At the same time, using the gaps between components as part of the heat dissipation duct can further ensure the compactness of the arrangement of components inside the body.

[0065] In this embodiment, it can be understood that the internal space of the housing 1 and the first pipe segment 32 constitute a heat dissipation duct as a whole, one end of the first pipe segment 32 constitutes the second air outlet 321, and the other end is connected to the internal space of the housing 1 as the first air inlet 322 of the first pipe segment 32, for example:

[0066] like Figure 4 As shown, the first air inlet pipe opening 322 can be directly placed in the internal space of the casing 1. When the dust suction fan 5 is working, the second air flow J2 enters the internal space of the casing 1 from the second air inlet opening 31, and then flows from the internal space of the casing 1 through the first air inlet pipe opening 322 into the first pipe section 32, and is finally discharged from the first air outlet 22.

[0067] Of course, it can also be, Figure 7 As shown, a drainage duct 6 is provided between the first air inlet 322 and the driving element, and the drainage duct 6 is surrounded by a tube shell. The driving element is provided in the drainage duct 6, one end of the drainage duct 6 is the second air inlet 31, and the other end is connected and communicated with the first air inlet 322. By providing the drainage duct 6 and arranging the driving element in the drainage duct 6, it can be ensured that the cold air entering from the second air inlet 31 is first concentrated in the drainage duct 6 to flow, effectively improving the heat dissipation effect of the driving element.

[0068] As a specific implementation, the dust suction air duct includes a second pipe section 23 disposed between the dust suction fan 5 and the first air outlet 22;

[0069] like Figure 8-Figure 11 As shown, the first pipe segment 32 is sleeved in the second pipe segment 23, the first pipe segment 32 and the second pipe segment 23 are axially the same, and the outer circumferential wall of the first pipe segment 32 and the inner circumferential wall of the second pipe segment 23 are spaced apart to form a channel 41 for the first airflow J1 to flow, preferably an annular channel 41 is formed between the two.

[0070] In this way, after the first airflow J1 enters the dust suction air duct, it flows from the channel 41 toward the first air outlet 22, passes through the peripheral side of the second air outlet 321, and drives the second airflow J2 to flow in the heat dissipation air duct. After the second airflow J2 flows out from the second air outlet 321, it merges with the first airflow J1 and then flows out from the first air outlet 22. In this solution, the first airflow J1 can be further accelerated by passing through the narrow gap formed by the two pipe sections, that is, the aforementioned channel 41. When the high-speed first airflow J1 passes through the second air outlet 321, it will attract more surrounding air flow, thereby forming a second airflow J2 with a higher flow rate, further improving the heat dissipation effect of the driving element.

[0071] Of course, in other optional embodiments, the positions of the first pipe segment 32 and the second pipe segment 23 are interchangeable, for example, the second pipe segment 23 is sleeved in the first pipe segment 32, the first pipe segment 32 and the second pipe segment 23 are axially the same, and the inner circumferential wall of the first pipe segment 32 and the outer circumferential wall of the second pipe segment 23 are spaced to form a channel 41. The first airflow J1 passes through the peripheral side of the second air outlet 321, driving the second airflow J2 to flow in the heat dissipation duct, and the second airflow J2 flows out of the second air outlet 321 after passing through the channel 41. Through the above structure, the second airflow J2 can flow through the narrow gap formed by the two pipe segments, that is, the aforementioned channel 41, further ensuring the flow rate of the second airflow J2 and improving the heat dissipation effect of the driving element.

[0072] For ease of understanding, this embodiment is specifically described below in a manner that the first pipe section 32 is sleeved within the second pipe section 23:

[0073] In this embodiment, the first pipe section 32 and the second pipe section 23 can be formed by enclosing a pipe shell. In this embodiment, Figure 8-Figure 11 As shown, the first pipe segment 32 and the second pipe segment 23 are formed on a structural member; wherein the radial cross-sections of the first pipe segment 32 and the second pipe segment 23 are both elliptical, and of course, may be other shapes, which are not specifically limited here.

[0074] In this embodiment, for the convenience of description, the end of the second pipe section 23 close to the first air outlet 22 constitutes the first air outlet 231, and the end of the second pipe section 23 away from the first air outlet 231 constitutes the second air inlet 232; Figure 3 As shown, the second air inlet 232 of the second pipe section 23 can be directly connected to the air outlet of the dust suction fan 5 and communicated with the air outlet of the dust suction fan 5 .

[0075] Among them, Fig.11 As shown, the first air outlet 231 of the second duct segment 23 is closer to the first air outlet 22 than the second air outlet 321 of the first duct segment 32, which is equivalent to extending the second duct segment 23 forward by a certain distance compared to the first duct segment 32, so as to form a mixing zone between the first air outlet 231 and the second air outlet 321, and the first airflow J1 and the second airflow J2 converge in the mixing zone.

[0076] The reason for setting up the mixing zone is that the mixing zone is equivalent to extending the second pipe segment 23 forward by a certain distance, so that the extended portion can restrain the first airflow J1 output by the second pipe segment 23, thereby preventing the first airflow J1 from diffusing outward before reaching the second air outlet 321. The outward diffusion of the first airflow J1 will affect the airflow injection effect of the first airflow J1 on the first pipe segment 32.

[0077] The connection relationship between the second pipe section 23 and the first air outlet 22 can be specifically in the following two ways:

[0078] The first one, such as Figure 5 As shown, the tube shell constituting the second pipe section 23 is directly and sealedly connected to the casing 1. Specifically, one end of the tube shell close to the first air outlet 22 (i.e., the aforementioned first exhaust pipe opening 231) is directly and sealedly fixedly docked on the first air outlet 22 and communicated with it, so that the first airflow J1 output by the second pipe section 23 is finally discharged directly from the first air outlet 22.

[0079] The second type, such as Figure 6 As shown, one end of the tube shell constituting the second pipe section 23 close to the first air outlet 22 constitutes a first exhaust duct opening 231 for the first air flow J1 to flow out; there is a gap a1 between the first exhaust duct opening 231 and the first air outlet 22, and the gap a1 here mainly refers to the axial gap a1 between the first exhaust duct opening 231 and the first air outlet 22.

[0080] Taking any plane perpendicular to the flow direction of the first air flow J1 as the designated plane, the first projection area of ​​the first air outlet 22 on the designated plane covers the second projection area of ​​the first exhaust pipe port 231 on the designated plane. The first projection area covers the second projection area, which can ensure that the first air flow J1 can be discharged from the first air outlet 22 as much as possible after flowing out of the first exhaust pipe port 231, so as to avoid the influence of the unexhausted first air flow J1 in the machine body. There is a gap a1 between the first exhaust pipe port 231 and the first air outlet 22, and the first air flow J1 may diverge after flowing out of the first exhaust pipe port 231. The divergence degree of the first air flow J1 can be determined based on the distance between the first exhaust pipe port 231 and the first air outlet 22 and the flow rate of the first air flow J1, and then the size of the area of ​​the first projection area outside the second projection area is determined, so as to ensure that the first air flow J1 can be discharged from the first air outlet 22 as much as possible after flowing out of the first exhaust pipe port 231, so as to avoid the influence of the unexhausted first air flow J1 in the machine body.

[0081] On the basis of setting a gap between the pipe section of the dust suction duct close to the first air outlet 22 and the first air outlet 22, a first pipe section 32 extending along the flow direction of the first air flow J1 is further set as a part of the heat dissipation duct, which can further guide the flow direction of the second air flow J2 flowing out of the second air outlet 321, thereby ensuring the convergence effect of the second air flow J2 with the first air flow J1 after flowing out of the second air outlet 321.

[0082] like Fig. 9 and Fig.10As shown, a protrusion 42 is provided on the inner wall of the channel 41 formed between the first pipe segment 32 and the second pipe segment 23 . Specifically in this embodiment, the protrusion 42 is located in the channel 41 and is provided on the inner circumferential wall of the second pipe segment 23 .

[0083] The purpose of providing the raised portion 42 is to be used for rectification, so that after the first airflow J1 enters the channel 41, under the guidance of the raised portion 42, the first airflow J1 can be more evenly distributed in the entire channel 41 to form an annular airflow in the channel 41, and finally distributed from the second air outlet 321 in the form of an annular airflow around the second air outlet 321, thereby improving the effect of the injection of the second airflow J2.

[0084] Specifically, the side wall of the protrusion 42 facing the first air inlet 21 is inclined to form a first guide surface 421 . Of course, the side wall of the protrusion 42 facing away from the first air inlet 21 can also be inclined to form a second guide surface 422 .

[0085] In order to improve the flow guiding effect, it is preferred that the first flow guiding surface 421 and / or the second flow guiding surface 422 is configured as an arc surface.

[0086] In order to further improve the ejection effect, in this embodiment, it is preferred that the cross-sectional area of ​​the channel 41 formed between the first pipe segment 32 and the second pipe segment 23 is equal to the cross-sectional area of ​​the first pipe segment 32. It can be understood that the cross-sectional area of ​​the channel 41 and the cross-sectional area of ​​the first pipe segment 32 here both refer to the cross-sectional area perpendicular to the pipe axis.

[0087] The second air inlet 31 is provided with a filter element. The filter element is mainly used to prevent the second airflow J2 from introducing foreign matter into the housing 1. The filter element may be a filter net or a filter plate with filter holes, such as a grille.

[0088] like Figure 12-14 As shown, this embodiment also provides a cleaning robot, such as a cleaning robot, which includes a housing 1, a heat dissipation channel 41, a dust suction duct, a dust suction fan 5 and a driving element for driving the cleaning member; the driving element is arranged in the heat dissipation duct, and the dust suction fan 5 is arranged in the dust suction duct.

[0089] One end of the dust suction duct is a first air inlet 21 connected to the surface to be cleaned, and the other end is a first air outlet 22 provided on the housing 1. The surface to be cleaned and the dust suction duct structure here can refer to the description of embodiment 1, such as Figure 2 As shown, the dust suction port of the roller brush chamber 11 of the cleaning robot can be used as the first air inlet 21 of the dust suction air duct.

[0090] like Fig.13 and Fig.14As shown, the dust suction duct includes a second pipe section 24 arranged between the dust suction fan 5 and the first air outlet 22; the second pipe section 24 is enclosed by a tube shell; one end of the tube shell constitutes a first exhaust pipe opening 231 for the first air flow J1 to flow out, and the other end is connected to the air outlet end of the dust suction fan 5; there is a gap a2 between the first exhaust pipe opening 231 and the first air outlet 22.

[0091] Taking any plane perpendicular to the flow direction of the first airflow J1 as the designated plane, the first projection area of ​​the first air outlet 22 on the designated plane covers the second projection area of ​​the first exhaust pipe port 231 on the designated plane. The first projection area covers the second projection area, which can ensure that the first airflow J1 can be discharged from the first air outlet 22 as much as possible after flowing out of the first exhaust pipe port 231, so as to avoid the influence of the unexhausted first airflow J1 in the machine body. There is a gap between the first exhaust pipe port 231 and the first air outlet 22, and the first airflow J1 may diverge after flowing out of the first exhaust pipe port 231. The divergence degree of the first airflow J1 can be determined based on the distance between the first exhaust pipe port 231 and the first air outlet 22 and the flow rate of the first airflow J1, and then the size of the area of ​​the first projection area outside the second projection area is determined, so as to ensure that the first airflow J1 can be discharged from the first air outlet 22 as much as possible after flowing out of the first exhaust pipe port 231, so as to avoid the influence of the unexhausted first airflow J1 in the machine body.

[0092] like Fig.13 As shown, the housing 1 is provided with a second air inlet 31, and the driving element is arranged on the airflow path between the second air inlet 31 and the gap a2. In this way, when the first airflow J1 flows through the gap a2, the viscosity of the gas will drive the gas flow on both sides of the first airflow J1, thereby driving the airflow in the body. Since the second air inlet 31 is connected to the gap a2, the airflow in the body can further drive the airflow outside the body to enter the body from the second air inlet 31 to form the second airflow J2. Since the driving element is arranged on the airflow path between the second air inlet 31 and the gap a2, the second airflow J2 can flow through the driving element, take away the heat of the driving element, and achieve the purpose of heat dissipation. The two sides of the first airflow J1 form a high-pressure and low-speed airflow layer relative to the first airflow J1, so that the second airflow J2 further converges to the first airflow J1 and flows out of the first air outlet 22 with the first airflow J1.

[0093] The distance between the first exhaust duct opening 231 and the first air outlet 22 can be set as needed. In view of the compactness of the cleaning robot structure, the air outlet of the dust suction fan is generally close to the casing on the surrounding side, so that the distance between the first exhaust duct opening 231 and the first air outlet 22 is limited. The smaller distance between the first exhaust duct opening 231 and the first air outlet 22 can make the divergence area of ​​the first airflow J1 in the gap a2 smaller, and the airflow speed reduction is smaller, so as to maintain a better induced effect and effectively drive the flow of the second airflow J2.

[0094] The space for arranging components inside the cleaning robot is relatively limited, which makes it difficult to set up a heat dissipation duct for the driving element inside the body. By setting a gap a2 between the duct section (i.e., the second duct section 24) of the dust suction duct close to the first air outlet 22 and the first air outlet, the airflow around the first air flow J1 is driven to flow, thereby achieving heat dissipation for the driving element. This can make the formation and arrangement of the heat dissipation duct more flexible, and it is only necessary to ensure that the air flow channel between the second air inlet 31 and the gap a2 can pass through the driving element.

[0095] For example, the heat dissipation duct can be completely formed by the gaps between components in the housing; or, the heat dissipation duct can also be partially formed by the gaps between components in the housing, and partially formed by the tube shell; or, the heat dissipation duct can also be entirely formed by the tube shell. Those skilled in the art can flexibly configure it according to the space requirements inside the body. Of course, in the structure of using the gap to achieve heat dissipation of the driving element, the pipeline structure shown in the above embodiment can also be used. For the specific implementation method, refer to the above embodiment, and no further description is given here.

[0096] The solution provided in the above-mentioned embodiments of this specification utilizes the airflow generated by the vacuum motor during the operation of the cleaning robot to guide the external airflow into the interior of the cleaning robot and flow through the surrounding side of the driving element, thereby realizing cyclic and continuous air cooling and heat dissipation of the driving element during the operation of the cleaning robot, and discharging the hot airflow out of the body, thereby improving the heat dissipation effect of the driving element while further avoiding the accumulation of heat inside the body, thereby ensuring the heat dissipation effect of the whole machine. In addition, the above-mentioned structure provided in the embodiments of this specification can further reduce the impact on the arrangement of components inside the cleaning robot while ensuring the heat dissipation effect, thereby improving the simplicity and flexibility of the heat dissipation design of the cleaning robot. By using the gaps between components as part of the heat dissipation air duct, the compactness of the arrangement of components inside the body can also be further ensured.

[0097] In some embodiments, similar to Figure 7In a manner, the heat dissipation air duct may include a drainage duct, which is a duct surrounded by a tube shell, and the driving element is arranged in the drainage duct. One end of the drainage duct is the second air inlet 31, and the other end is formed with a second exhaust duct opening, which is connected to the gap a2. By setting the drainage duct, it can be ensured that the cold air entering from the second air inlet 31 is first concentrated in the drainage duct to flow, effectively improving the heat dissipation effect on the driving element.

[0098] The second air inlet 31 is disposed at a position close to the driving element, so that the second airflow J2 can immediately flow through the driving element after passing through the second air inlet 31, thereby improving the heat dissipation effect on the driving element.

[0099] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A cleaning robot, characterized in that: It includes a housing, a heat dissipation duct, a dust collection duct, a dust collection fan and a driving element for driving a cleaning member; the driving element is arranged in the heat dissipation duct, and the dust collection fan is arranged in the dust collection duct; One end of the dust suction duct is a first air inlet connected to the surface to be cleaned, and the other end is a first air outlet provided on the housing; under the action of the dust suction fan, the first airflow enters the dust suction duct from the first air inlet, and then is discharged from the first air outlet; One end of the heat dissipation duct is a second air inlet, and the other end is a second air outlet. The heat dissipation duct includes a first pipe section extending along the first air flow direction, and one end of the first pipe section is the second air outlet; wherein, The first airflow flows through the periphery of the second air outlet, driving the second airflow to flow from the second air inlet into the heat dissipation duct, passing through the driving element, and then flowing out from the second air outlet, merging into the first airflow and being discharged from the first air outlet.

2. A cleaning robot according to claim 1, characterized in that: The dust suction air duct includes a second pipe section arranged between the dust suction fan and the first air outlet; The second pipe segment is sleeved in the first pipe segment, or the first pipe segment is sleeved in the second pipe segment.

3. A cleaning robot according to claim 1 or 2, characterized in that: The dust suction air duct comprises a second pipe section arranged between the dust suction fan and the first air outlet; the second pipe section is enclosed by a tube shell, and the tube shell is sealed and connected to the casing.

4. A cleaning robot according to claim 1 or 2, characterized in that: The dust suction duct includes a second pipe section arranged between the dust suction fan and the first air outlet; the second pipe section is enclosed by a tube shell, and the tube shell forms a first exhaust pipe opening for the first air flow to flow out; there is a gap between the first exhaust pipe opening and the first air outlet; Taking any plane perpendicular to the flow direction of the first air flow as the designated plane, a first projection area of ​​the first air outlet on the designated plane covers a second projection area of ​​the first exhaust pipe opening on the designated plane; The second air outlet is connected to the gap, so that when the first airflow flows through the gap, it drives the second airflow to flow in from the second air inlet, flows into the gap through the driving element and the second air outlet, merges into the first airflow, and is discharged from the first air outlet.

5. The cleaning robot according to claim 1, characterized in that: The second air inlet is arranged at a position close to the driving element.

6. A cleaning robot according to claim 2, characterized in that: A raised portion on the inner wall of the channel formed between the first pipe section and the second pipe section.

7. A cleaning robot according to claim 6, characterized in that: The side wall of the protrusion facing the first air inlet is inclined to form a first guide surface, and / or the side wall of the protrusion facing away from the first air inlet is inclined to form a second guide surface.

8. A cleaning robot according to claim 7, characterized in that: The first flow guiding surface and / or the second flow guiding surface is an arc-shaped surface.

9. The cleaning robot according to claim 2, characterized in that: The cross-sectional area of ​​the channel formed between the first pipeline segment and the second pipeline segment is equal to the cross-sectional area of ​​the first pipeline segment.

10. The cleaning robot according to claim 1, characterized in that: The first air inlet is provided with a filter.

11. The cleaning robot according to claim 4, characterized in that: The first air outlet of the second pipe section is closer to the first air outlet than the second air outlet of the first pipe section.

12. The cleaning robot according to claim 1, characterized in that: One end of the first pipe section away from the second air outlet constitutes a first air inlet pipe opening, a drainage pipe is provided between the first air inlet pipe opening and the driving element, the drainage pipe is surrounded by a tube shell, and the driving element is arranged in the drainage pipe; one end of the drainage pipe is the second air inlet, and the other end is connected to the first air inlet pipe opening.

13. A cleaning robot, characterized in that: The cleaning robot comprises a housing, a heat dissipation channel, a dust suction duct, a dust suction fan and a driving element for driving a cleaning member; the driving element is arranged in the heat dissipation duct, and the dust suction fan is arranged in the dust suction duct; One end of the dust suction duct is a first air inlet connected to the surface to be cleaned, and the other end is a first air outlet provided on the housing; the dust suction duct includes a second pipe section provided between the dust suction fan and the first air outlet; the second pipe section is surrounded by a tube shell; the tube shell is formed with a first exhaust pipe opening for the first air flow to flow out, and there is a gap between the first exhaust pipe opening and the first air outlet, wherein, Taking any plane perpendicular to the flow direction of the first air flow as the designated plane, a first projection area of ​​the first air outlet on the designated plane covers a second projection area of ​​the first exhaust pipe opening on the designated plane; The housing is provided with a second air inlet, and the driving element is arranged on the air flow path between the second air inlet and the gap, so that when the first air flow flows through the gap, it drives the second air flow to flow in from the second air inlet, pass through the driving element, flow into the gap, and flow out from the first air outlet together with the first air flow.

14. A cleaning robot according to claim 13, characterized in that: The second air inlet is arranged at a position close to the driving element.

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