Fan, cleaning equipment and cleaning system

Abstract

The invention is suitable for the technical field of cleaning equipment, and provides a fan, cleaning equipment and a cleaning system.The fan is at least used for the cleaning equipment and comprises a shell and a heating part, the shell comprises a first area and a second area, and the heat conductivity of the first area is larger than that of the second area; and the heating element is in heat conduction connection with the first area. The fan has the advantage of being good in heat dissipation effect.

Description

Technical Field

[0001] This application belongs to the field of cleaning equipment. More specifically, it relates to a fan, a cleaning device, and a cleaning system. Background Art

[0002] In cleaning equipment such as vacuum cleaners and floor sweeping robots, the fan is one of the key components, and its function is to generate airflow to suck up dust and other sundries. Currently, during the operation of the fan, heat-generating components such as the motor will generate a large amount of heat. If the heat cannot be dissipated in time, it will cause the temperature inside the fan to be too high, which will in turn affect the performance and lifespan of the fan. In related technologies, the heat dissipation performance of the fan is poor and it is difficult to meet the requirements of cleaning equipment for efficient heat dissipation of the fan. Summary of the Invention

[0003] This application aims to solve the problem that the normal operation of the fan is affected by heat accumulation, and at least improve the heat dissipation effect of the fan to a certain extent.

[0004] To achieve the above object, the technical solution adopted in this application is:

[0005] In a first aspect, a fan is provided, which is at least used in a cleaning device. The fan includes a housing and a heat-generating component. The housing includes a first area and a second area, and the thermal conductivity of the first area is greater than that of the second area; the heat-generating component is thermally connected to the first area.

[0006] In a feasible implementation, the housing includes a first housing and a second housing that are axially oppositely arranged and fixedly connected. The first housing forms the first area, and the second housing forms the second area.

[0007] In a feasible implementation, the first housing is made of a metal material, and the second housing is made of a non-metal material.

[0008] In a feasible implementation, at least part of the surface of the first housing protrudes toward the side away from the second housing to form a first mounting portion, and the number of the first mounting portions is at least one. The heat-generating component is mounted on the first housing through the first mounting portion.

[0009] In a feasible implementation, the first mounting portion has a first mounting interface, and the first mounting interface is configured to realize the fixed connection between the heat-generating component and the first housing through a first heat-conducting fastener.

[0010] In a feasible implementation, the orthographic projection of the first mounting portion on the axial direction of the housing at least partially overlaps with the orthographic projection of the first area on the axial direction of the housing.

[0011] In a feasible implementation, the heating element includes a motor assembly disposed in the housing, and the motor assembly is thermally connected to the first region.

[0012] In a feasible implementation, an air duct is formed in the housing, and the wall surface of at least a part of the air duct is constituted by the first region;

[0013] The blower further includes an impeller, and the impeller is drivingly connected to the motor assembly to generate an air flow in the air duct under the drive of the motor assembly.

[0014] In a feasible implementation, one side of the first region facing away from the second region has a heat-conducting contact surface, and a heat-conducting medium is provided between the heat-conducting contact surface and the heating element.

[0015] In a feasible implementation, the heating element further includes a control board, and the control board is electrically connected to the motor assembly and at least partially located between the motor assembly and the first region;

[0016] At least a part of the region of the heat-conducting contact surface protrudes along the axial direction of the housing and forms a mounting surface matching the shape of the control board, and the control board is attached to the mounting surface.

[0017] In a feasible implementation, the orthographic projection of the mounting surface in the axial direction of the blower at least partially coincides with the orthographic projection of the control board in the axial direction of the housing.

[0018] In a feasible implementation, a first mounting hole is formed on the control board, a second mounting hole opposite to the first mounting hole is formed on the heat-conducting contact surface, and the control board is fixedly mounted on the heat-conducting contact surface by a second heat-conducting fastener passing through the first mounting hole and the second mounting hole.

[0019] In a feasible implementation, the blower further includes an end cover, and at least a part of the end cover is located at one end of the motor assembly facing away from the housing and is fixedly connected to at least one of the motor assembly and the housing.

[0020] In a feasible implementation, a second mounting portion is further protruded on the first region of the housing, and the end cover is fixedly connected to the second mounting portion.

[0021] In a feasible implementation, the second mounting portion has a second mounting interface, and the second mounting interface is configured to realize the fixed connection between the end cover and the housing through a third heat-conducting fastener.

[0022] In a feasible implementation manner, the positive projection of the second installation portion in the axial direction of the housing coincides at least partially with the positive projection of the first region in the axial direction of the housing.

[0023] In a feasible implementation manner, the motor assembly further includes a rotating shaft, one end of the rotating shaft is rotatably connected to the end cover, and the other end passes through the housing through a bearing and is connected to the impeller;

[0024] Wherein, the bearing is installed on the housing through the first region.

[0025] In a feasible implementation manner, an elastic preloading member is provided between the bearing and the housing, and the elastic preloading member is sleeved on the rotating shaft.

[0026] In a feasible implementation manner, a heat insulation layer is provided between the first region and the second region, and the heat insulation layer is used to inhibit heat conduction between the first region and the second region.

[0027] In a feasible implementation manner, the housing is a volute structure.

[0028] In a second aspect, a cleaning device is provided, including the blower according to any one of the above.

[0029] In a third aspect, a cleaning system is provided, including a cleaning device and a cleaning base station, the cleaning device is the cleaning device described above, and the cleaning base station and the cleaning device are used in cooperation.

[0030] Compared with the prior art, the present application at least includes the following beneficial effects:

[0031] The blower provided by the embodiment of the present application is used for a cleaning device, including a housing and a heating element. The housing includes a first region and a second region with different thermal conductivities, and the thermal conductivity of the first region is greater than that of the second region. The heating element is thermally connected to the first region, thereby helping to improve the problem of heat accumulation caused by continuous operation at the heating element. At the same time, the heat generated by the heating element during operation can be conducted to the housing more quickly through the first region, and the heat dissipation effect at the heating element can be effectively improved through the first region with a higher thermal conductivity. Compared with related structures, the blower provided by the embodiment of the present application can achieve more efficient heat dissipation, thereby reducing the risk of performance degradation caused by heating, and to a certain extent, the working efficiency and service life of the blower can be improved. At the same time, the housing formed by different material combinations can also take into account factors such as the processing cost and equipment weight of the blower while ensuring the heat dissipation effect.

[0032] The cleaning device provided by the embodiment of the present application includes the above-mentioned fan. Therefore, the beneficial effects of the cleaning device including any one or several of the above-mentioned fans will not be elaborated here. In addition, the cleaning device with the above-mentioned fan also has higher cleaning efficiency and reliability. The cleaning system provided by the embodiment of the present application includes the above-mentioned cleaning device. Therefore, the beneficial effects of the cleaning system including any one or several of the above-mentioned cleaning devices will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a schematic diagram of the overall structure of the cleaning system provided by the embodiment of the present application;

[0035] Figure 2 It is a schematic diagram of the structure of the cleaning device provided by the embodiment of the present application;

[0036] Figure 3 It is a schematic diagram of a partial internal structure of the cleaning device provided by the embodiment of the present application;

[0037] Figure 4A and Figure 4B It is a schematic diagram of the structure of the fan provided by the embodiment of the present application;

[0038] Figure 5 It is an exploded view of the fan provided by the embodiment of the present application;

[0039] Figure 6 It is a top view of the fan provided by the embodiment of the present application;

[0040] Figure 7 It is an assembly schematic diagram of the housing and the heating element in the fan provided by the embodiment of the present application;

[0041] Figure 8 It is an assembly schematic diagram of the first housing and the control board in the fan provided by the embodiment of the present application;

[0042] Figure 9 It is an assembly schematic diagram of the first housing and the motor assembly in the fan provided by the embodiment of the present application;

[0043] Figure 10 It is an assembly schematic diagram of the first housing and the end cover in the fan provided by the embodiment of the present application.

[0044] Among them, the reference numerals in the drawings:

[0045] 10. Fan; 20. Cleaning member; 100. Cleaning device; 200. Cleaning base station; 1000. Cleaning system;

[0046] 1. Housing; 101. First zone; 1011. Heat-conducting contact surface; 10111. Mounting surface; 10112. Second mounting hole; 102. Second zone; 103. Air duct; 104. Air inlet; 105. Air outlet; 11. First housing; 111. First mounting portion; 1111. First mounting interface; 112. Second mounting portion; 1121. Second mounting interface; 12. Second housing; 2. Heating element; 21. Motor assembly; 211. Rotating shaft; 212. Bearing; 213. Stator; 214. Rotor; 22. Control board; 221. First mounting hole; 3. First heat-conducting fastener; 4. Impeller; 5. Second heat-conducting fastener; 6. End cover; 7. Third heat-conducting fastener. Detailed implementation manners

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0049] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0050] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0051] In this application, unless otherwise clearly specified or defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] In this application, unless otherwise clearly specified or defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0053] In this application, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0054] The embodiments of this application provide a fan 10, a cleaning device 100, and a cleaning system 1000, where the fan 10 is at least used for the cleaning device 100. The cleaning device 100 can be applied to the cleaning system 1000 having a cleaning base station 200.

[0055] The cleaning device 100 can be a vacuum cleaner, or other floor cleaning supplies only used for floor cleaning, such as a floor sweeping robot, a mopping and sweeping robot, etc. The cleaning base station 200 can be a base station structure that cooperates with the cleaning device 100 and has a charging function.

[0056] Figure 1 It is a schematic diagram of the overall structure of the cleaning system 1000 provided by the embodiments of this application. Figure 2This is a schematic structural diagram of the cleaning device 100 provided by the embodiments of the present application.

[0057] Please refer to Figure 1 and Figure 2 , the cleaning system 1000 includes a cleaning device 100 and a cleaning base station 200 that are used in cooperation with each other, and the cleaning base station 200 has at least a charging function.

[0058] It can be understood that the cleaning device 100 can be a device that automatically performs cleaning operations in a certain area to be cleaned. Please refer to Figure 2 . When the cleaning device 100 starts to work, the cleaning device 100 can start from the cleaning base station 200 and perform corresponding cleaning tasks; when the cleaning device 100 completes the cleaning task or in other cases where the cleaning task needs to be aborted, the cleaning device 100 can return to the cleaning base station 200 to perform at least one or more of the tasks such as charging, water replenishment, cleaning, and dust collection.

[0059] The cleaning device 100 can achieve the dust collection and cleaning function through the fan 10.

[0060] In some embodiments, the cleaning device 100 further includes a cleaning member 20 and a dust box that cooperate with the fan 10, wherein the cleaning member 20 is used to contact the surface to be cleaned and includes at least one of a rolling brush and a side brush; along the flow direction of the airflow generated when the fan 10 starts, the dust box is located between the fan 10 and the cleaning member 20.

[0061] When applying the cleaning device 100 to perform dust collection and cleaning on the ground, the cleaning member 20 starts and collects garbage such as dust, hair, and small particle impurities on the ground under the cleaning device 100. In the state where the fan 10 is started, the garbage under the cleaning device 100 can be sucked into the interior of the cleaning device 100 through the airflow channel constructed inside the cleaning device 100.

[0062] Please refer to Figure 3 . Figure 3 This is a partial internal structural schematic diagram of the cleaning device 100 provided by the embodiments of the present application. Figure 3 The cleaning member 20 in [[ ]] is a rolling brush provided on the lower surface of the cleaning device 100. When the fan 10 starts, the generated airflow carries the garbage lifted by the rolling brush and flows in the direction of the fan 10 through the airflow channel and enters the dust box (located between the fan 10 and the rolling brush, not marked in the figure) between the fan 10 and the rolling brush. In this process, the airflow flows from the bottom of the cleaning device 100 to the inside of the cleaning device 100, and the garbage is collected through the dust box, thereby achieving efficient dust collection and cleaning of the ground.

[0063] It can be understood that in some embodiments, the cleaning device 100 may also include a cleaning base station with a dust collection function. The cleaning base station has a dust collection function, and the fan 10 is located inside the cleaning base station. A dust bag and a dust collection air duct are also provided inside the cleaning base station. The fan 10 is connected to the dust collection air duct and is used to suck the garbage in the dust box of the cleaning host (such as a sweeper or a floor washer) into the dust bag through the dust collection air duct.

[0064] Figure 4A and Figure 4B is a schematic structural diagram of the fan 10 provided by the embodiment of the present application.

[0065] Please refer to Figure 4A and Figure 4B , the embodiment of the present application provides a fan 10, and the fan 10 is used for the cleaning device 100 described above.

[0066] Specifically, the fan 10 includes a housing 1 and a heating element 2. The housing 1 includes a first area 101 and a second area 102, and the thermal conductivity of the first area 101 is greater than that of the second area 102; the heating element 2 is thermally connected to the first area 101.

[0067] In the fan 10 provided by the embodiment of the present application, by setting the thermal conductivity of the first area 101 to be greater than that of the second area 102 and the heating element 2 to be thermally connected to the first area 101, the first area 101 can be used as the main heat dissipation area. The first area 101 can efficiently absorb and conduct the heat generated by the heating element 2, significantly improving the heat dissipation efficiency, ensuring that the key components of the fan 10 (such as the heating element 2, etc.) work at an appropriate temperature, and reducing the performance attenuation and failure risk caused by high temperature. Moreover, the first area 101 and the second area 102 adopt materials with different thermal conductivities, which can reduce the use of thermal conductive materials and effectively reduce the production cost of the fan 10.

[0068] The fan 10 generates a certain amount of heat during operation, and the heat dissipation ability of the fan 10 disclosed in the related art is relatively limited. After the fan 10 works for a long time, affected by the heat dissipation ability, the heat accumulated inside it is too high, resulting in a high internal temperature of the fan 10. This will not only affect the working efficiency of the fan 10, causing the flow velocity / flow rate of the airflow generated by the fan 10 to decrease, but also cause the internal acceleration of the fan 10 to age and affect the service life of the fan 10. In this embodiment, the heating element 2 in the fan 10 is thermally connected to the first area 101, and the thermal conductivity of the first area 101 is greater than that of the second area 102. Therefore, the heat generated by the heating element 2 when the fan 10 works will preferentially be transferred to the first area 101 through heat conduction. With its good thermal conductivity, the first area 101 can quickly disperse the heat and accelerate the heat dissipation speed to the surrounding environment by increasing the heat dissipation area.

[0069] Therefore, the fan 10 provided in this embodiment has good heat dissipation efficiency. On the premise that other conditions remain unchanged, the higher heat dissipation efficiency can reduce the possibility of overheating when the fan 10 is working, thereby enabling the fan 10 to work at a high power for a long time, or having a higher power (operating under a higher load allowed by the fan 10 and not exceeding the temperature limit, thus indirectly supporting a higher maximum power, etc.).

[0070] Specifically, an air inlet 104 and an air outlet 105 are further formed on the housing 1 of the fan 10. The air inlet 104 is formed in the second area 102 of the fan 10, and the air outlet 105 is formed by enclosing the first area 101 and the second area 102 of the fan 10. When the fan 10 is working, the air flow flows into the housing 1 through the air inlet 104 of the fan 10 and is discharged through the air outlet 105. In this process, the air flow discharged through the air outlet 105 flows through at least part of the area of the first area 101 and carries the heat at the first area 101 and is discharged from the air outlet 105, which can further accelerate heat conduction, ensure that the heat generated when the fan 10 is working can be quickly dissipated through the first area 101, ensure the stable operation of the fan 10 during long-term work, and can maintain a high-power working state for a longer time.

[0071] Please refer to Figure 4A and Figure 4B , the fan 10 has a volute structure. The housing 1 includes a first housing 11 and a second housing 12 that are axially oppositely arranged and fixedly connected. Both the first housing 11 and the second housing 12 are in a volute shape and can be snap-connected to form a hollow housing 1. The first housing 11 forms the first area 101, and the second housing 12 forms the second area 102. The first housing 11 and the second housing 12 are connected to form a complete housing 1, which can achieve a good heat dissipation effect while ensuring the basic functions of the fan 10.

[0072] In order to reduce the possibility of heat conduction from the first area 101 to the second area 102, in some embodiments, a heat insulation layer is provided between the first area 101 and the second area 102, and the heat insulation layer is used to inhibit heat conduction between the first area 101 and the second area 102.

[0073] The heat insulation layer is used to inhibit the transfer of heat from the first area 101 to the second area 102 to protect the second area 102 and prevent the second area 102 from being damaged under high-temperature conditions.

[0074] Specifically, on the premise that the first housing 11 forms the first area 101 and the second housing 12 forms the second area 102, the heat insulation layer located at the connection between the first housing 11 and the second housing 12 can be made of a material with a low thermal conductivity and has excellent high-temperature resistance to achieve a good heat insulation effect between the first housing 11 and the second housing 12. Exemplarily, the heat insulation layer can include heat insulation rubber strips.

[0075] The housing 1 composed of a first housing 11 and a second housing 12 is a hollow structure, and an air duct 103 is formed therein. The wall surface of at least a part of the air duct 103 is constituted by a first region 101. An air inlet 104 and an air outlet 105 are respectively located at both ends of the air duct 103, and an air flow path passing through the air duct 103 is formed therebetween.

[0076] In a state where the fan 10 is started, the air inlet 104 can be used to introduce external gas into the air duct 103, and the air outlet 105 is used to discharge the gas in the air duct 103, so as to form an air flow flowing through the first region 101. The first region 101 absorbs the heat dissipated from the heat generating member 2 and transfers the heat into the air duct 103. The air flow flowing through the air duct 103 can carry the above heat and be discharged from the air outlet 105, thereby effectively improving the heat dissipation efficiency of the heat generating member 2 and improving the heat dissipation performance of the fan 10.

[0077] Specifically, at least a part of the wall surface of the first region 101 facing the air duct 103 is a heat dissipation surface. At least a part of the air flow located in the air duct 103 can flow through the above heat dissipation surface and take away the heat of the heat dissipation surface through heat exchange and other means.

[0078] In some embodiments, the first housing 11 is made of a metal material, and the second housing 12 is made of a non-metal material.

[0079] Specifically, the metal materials used to make the first housing 11 include at least one of materials such as aluminum alloy and copper; the non-metal materials used to make the second housing 12 include plastics and the like.

[0080] The plastic material has good strength and insulation performance, and also has advantages such as low processing cost and light weight. Using a metal material to prepare the first housing 11 and a non-metal material to prepare the second housing 12 can help reduce the weight of the housing 1 and the manufacturing cost of the housing 1 while improving the heat dissipation effect of the housing 1 of the fan 10.

[0081] In other similar embodiments, it is also possible to set that only a part of the structure of the first housing 11 constitutes the first region 101, that is, the first region 101 is only located in a part of the first housing 11. At this time, at least a part of the remaining region of the first housing 11 can cooperate with the second housing 12 to jointly constitute a second region 102.

[0082] Specifically, the first housing 11 includes a metal material and a non-metal material, and the metal material constitutes the first region 101. Exemplarily, the first housing 11 can be set as a plastic housing with an opening, and a metal sheet is fixed to the plastic housing through the opening and constitutes the first region 101. The metal sheet can be embedded at the opening of the first housing 11.

[0083] Inside the housing 1, an impeller 4 is also provided. The heating element 2 of the blower 10 includes a motor assembly 21 partially located inside the housing 1. Please refer to Figure 4A and Figure 4B . The impeller 4 is drivingly connected to the motor assembly 21 to generate an air flow flowing from the air inlet 104 to the air outlet 105 in the air duct 103 under the drive of the motor assembly 21.

[0084] Please refer to Figure 4A . The impeller 4 is located inside the housing 1 and is arranged towards the air inlet 104 through the heating element 2. When the blower 10 is started, the impeller 4 can rotate under the drive of the heating element 2 and guide the air flow to flow from the air inlet 104 to the air outlet 105.

[0085] Please refer to Figure 4B . In addition to the motor assembly 21, the heating element 2 of the blower 10 further includes a control board 22. Part of the motor assembly 21 passes through the first housing 11 and is arranged on the side of the first housing 11 facing away from the second housing 12. The control board 22 is located on the side of the first housing 11 facing away from the second housing 12 and at least partially located between the motor assembly 21 and the first housing 11.

[0086] Specifically, the control board 22 is electrically connected to the motor assembly 21 and is used to control the operating state of the motor assembly 21.

[0087] Please refer to Figure 4B . The blower 10 further includes an end cap 6 fixedly installed outside the first area 101 of the housing 1. The end cap 6 is located outside the housing 1 and at least partially located on the side of the heating element 2 facing away from the housing 1.

[0088] Figure 5 is the exploded view of the blower 10 provided by the embodiment of the present application, Figure 6 is the top view of the blower 10 provided by the embodiment of the present application, Figure 7 is the assembly schematic diagram of the housing 1 and the heating element 2 in the blower 10 provided by the embodiment of the present application, Figure 8 is the assembly schematic diagram of the first housing 11 and the control board 22 in the blower 10 provided by the embodiment of the present application, Figure 9 is the assembly schematic diagram of the first housing 11 and the motor assembly 21 in the blower 10 provided by the embodiment of the present application, Figure 10 is the assembly schematic diagram of the first housing 11 and the end cap 6 in the blower 10 provided by the embodiment of the present application.

[0089] Please refer to Figure 5 and Figure 6, the fan 10 provided by the embodiments of the present application mainly includes a housing 1, a heating element 2, an impeller 4 and an end cover 6. The housing 1 includes a first housing 11 and a second housing 12 connected along the axial direction. An air inlet 104 is formed on the second housing 12. The first housing 11 and the second housing 12 can be fastened to form an air outlet 105. An impeller 4 is further arranged in the housing 1. The impeller 4 can cooperate with the first housing 11 and the second housing 12 to form an air duct 103 in the housing 1. The air duct 103 is communicated with the air inlet 104 and the air outlet 105. The heating element 2 includes a motor assembly 21 and a control board 22. The motor assembly 21 includes a rotating shaft 211, a rotor 214 and a stator 213. The rotating shaft 211 passes through the first housing 11 of the housing 1 and is rotatably connected to the first housing 11 through a bearing 212. One end of the rotating shaft 211 extending into the housing 1 can be connected to the impeller 4 to drive the impeller 4 to rotate.

[0090] The rotating shaft 211 is thermally connected to the first region 101 through the bearing 212. In order to improve the connection firmness between the bearing 212 and the first region 101, an elastic preloading member is provided between the bearing 212 and the first housing 11. The elastic preloading member is sleeved on the rotating shaft 211 and abuts against the surface of the first housing 11.

[0091] The elastic preloading member can be used to provide axial preloading force and radial sealing interface, and can buffer the vibration that may occur when the rotating shaft 211 rotates to a certain extent, ensuring the stability of the rotation of the rotating shaft 211. When the elastic preloading member is installed, the overall operation stability of the fan 10 can be enhanced, and vibration and noise can be reduced.

[0092] In some embodiments, an appropriate amount of liquid sealing medium is filled between the elastic preloading member and the rotating shaft 211 to seal the axial and radial interfaces and play a certain role in sealing and waterproofing.

[0093] Specifically, the liquid sealing medium can be an oil-based product.

[0094] Specifically, the elastic preloading member can be a metal corrugated washer, and at this time, the metal corrugated washer also has a certain heat conduction function.

[0095] At least part of the surface of the first housing 11 protrudes towards the side away from the second housing 12 to form a first mounting portion 111. The number of the first mounting portions 111 is at least one. The heating element 2 is mounted on the first housing 11 through the first mounting portion 111.

[0096] Specifically, please refer to Figure 6 , the number of the first mounting portions 111 is three and they are arranged at intervals on the first housing 11. At least part of the structure of the heating element 2 can be mounted on the first housing 11 through the first mounting portion 111 to achieve thermal connection with the first housing 11.

[0097] It should be noted that the above-mentioned first mounting portion 111 has a first mounting interface 1111, and the first mounting interface 1111 is configured to realize the fixed connection between the heating element 2 and the first housing 11 through the first heat-conducting fastener 3.

[0098] Specifically, the first mounting interface 1111 can be a perforated or blind hole structure with internal threads.

[0099] The first mounting portion 111 is formed on the first housing 11, which means that the first mounting portion 111 is also formed in the first area 101 and has good heat-conducting performance. When the first heat-conducting fastener 3 fixes the heating element 2 to the first housing 11 through the first mounting interface 1111, the first heat-conducting fastener 3 can also realize a certain heat-conducting function through the first mounting portion 111, that is, realize the coupling of fixation and heat conduction. Under the fastening action of the first heat-conducting fastener 3, a heat-conduction enhanced cross-section can be formed between the heating element 2 and the first mounting portion 111, further enhancing the heat-conduction effect of the first area 101 (the first housing 11).

[0100] It should be noted that in order to further improve the heat-conduction effect, an appropriate amount of heat-conducting medium (such as heat-conducting silicone grease, etc.) can be filled between the first mounting interface 1111 and the first heat-conducting fastener 3 to further improve the heat-conduction efficiency between the heating element 2 and the first area 101.

[0101] Please refer to Figure 6 , a end cap 6 is provided at one end of the heating element 2 facing away from the housing 1, and the motor assembly 21, the control board 22 and the end cap 6 are respectively fixedly installed on the first housing 11 through the first heat-conducting fastener 3, the second heat-conducting fastener 5 and the third heat-conducting fastener 7.

[0102] Next, please refer to Figures 7 - 10 , and the heat-conducting connection structure between the heating element 2 and the first area 101 will be specifically described.

[0103] Please refer to Figure 7 , the motor assembly 21, the control board 22 and the end cap 6 can all be heat-conductively connected to the first area 101. Among them, at least part of the control board 22 is located between the motor assembly 21 and the first area 101 and can directly contact the surface of the first area 101; the end cap 6 is located on the side of the control board 22 facing away from the housing 1, and at least part of the motor assembly 21 is located between the control board 22 and the end cap 6.

[0104] Please refer to Figure 8, on the side of the first region 101 (the first housing 11) facing away from the second region 102, there is a heat-conducting contact surface 1011. At least part of the region of the heat-conducting contact surface 1011 protrudes along the axial direction of the housing 1 and forms a mounting surface 10111 that matches the shape of the control board 22. The control board 22 can be mounted on the heat-conducting contact surface 1011 of the first region 101 by fitting and mounting with the mounting surface 10111.

[0105] In order to further improve the heat conduction efficiency between the control board 22 and the heat-conducting contact surface 1011, in some embodiments, at least part of the heat-conducting contact surface 1011 is coated with a heat-conducting medium, and the control board 22 is in thermal contact with at least part of the heat-conducting contact surface 1011.

[0106] The heat-conducting medium can fill the tiny gaps between the heating element 2 and the heat-conducting contact surface 1011, further improving the heat transfer efficiency and ensuring that heat is transferred more smoothly from the heating element 2 to the heat-conducting contact surface 1011 of the first region 101.

[0107] Specifically, the above-mentioned heat-conducting medium can be coated on the surface of the mounting surface 10111 or in the remaining region of the heat-conducting contact surface 1011 surrounded by the mounting surface 10111. The heat-conducting medium can be heat-conducting silica gel or other materials with similar effects to help enhance the heat conduction effect between the heating element 2 and the first region 101.

[0108] Specifically, the positive projection of the mounting surface 10111 in the axial direction of the fan 10 and the positive projection of the control board 22 in the axial direction of the housing 1 at least partially overlap, so that the mounting surface 10111 and the control board 22 can be roughly matched. At this time, there is a good heat transfer path between the control board 22 and the first region 101. The heat generated by the operation of the control board 22 can be conducted to the first region 101 in a timely and effective manner through the mounting surface 10111 and the heat-conducting medium, etc.

[0109] Please refer to Figure 8 , along the axial direction of the first housing 11, the mounting surface 10111 is a special-shaped structure similar to a "C", and the control board 22 is a hollow irregular ring structure, and part of the surface on the side facing the housing 1 in the axial direction can be attached to the mounting surface 10111.

[0110] It should be noted that the above-mentioned special-shaped mounting surface 10111 has a certain anti-mistake effect, which can help reduce the positioning difficulty when the control board 22 is mounted on the mounting surface 10111.

[0111] In order to further improve the contact firmness between the control board 22 and the mounting surface 10111, in some embodiments, a first mounting hole 221 is provided on the control board 22, and a second mounting hole 10112 is provided on the heat-conducting contact surface 1011. When the control board 22 is attached to the mounting surface 10111, the first mounting hole 221 and the second mounting hole 10112 are exactly opposite to each other. The control board 22 can be fixedly mounted on the heat-conducting part contact surface through a second heat-conducting fastener 5 passing through the first mounting hole 221 and the second mounting shell.

[0112] Please refer to Figure 8 , the number of the first mounting holes 221 is two, and the number of the second mounting holes 10112 is the same as that of the first mounting holes 221 and they are arranged in one-to-one correspondence. Of course, in other similar embodiments, the number of the first mounting holes 221 can also be three or more. The more the number of the first mounting holes 221, the firmer the connection between the control board 22 and the first housing 11.

[0113] The second mounting hole 10112 can be provided on the mounting surface 10111, or can be provided on other areas of the heat-conducting contact surface 1011 except the mounting surface 10111.

[0114] Please refer to Figure 8 , the second mounting hole 10112 is provided on the area of the heat-conducting contact surface 1011 except the mounting surface 10111. In order to facilitate the fixed connection between the second heat-conducting fastener 5 and the second mounting hole 10112, a part of the surface of the heat-conducting contact surface 1011 facing the control board 22 bulges towards the control board 22 and forms a columnar structure provided with the second mounting hole 10112.

[0115] In the embodiment of the present application, the second heat-conducting fastener 5 can be a bolt structure with an external thread. Correspondingly, the second mounting hole 10112 is a through hole or blind hole structure with an internal thread.

[0116] The second heat-conducting fastener 5 has a good heat-conducting function. When the control board 22 is mounted on the first area 101 through the second heat-conducting fastener 5, the control board 22 can transfer heat to the first area 101 through both the heat-conducting contact surface 1011 and the second heat-conducting fastener 5 at the same time, so as to further enhance the heat conduction effect between the control board 22 and the first area 101.

[0117] It should be noted that, in order to further improve the heat conduction effect, an appropriate amount of heat-conducting medium (such as heat-conducting silicone grease, etc.) can be filled between the second mounting hole 10112 and the second heat-conducting fastener 5 to further improve the heat conduction efficiency between the control board 22 and the first area 101.

[0118] Please refer to Figure 8 and Figure 9, a plurality of second mounting holes 10112 formed on the heat-conducting contact surface 1011 are arranged at intervals and are spaced apart from the first mounting portion 111.

[0119] Please refer to Figure 9 , the motor assembly 21 in the heating element 2 is thermally connected to the first area 101 and can be fixed to the first housing 11 through the first mounting portion 111.

[0120] For the structure of the first mounting portion 111, please refer to the foregoing. In addition, along the axial direction of the housing 1, the positive projection of the first mounting portion 111 in the axial direction of the housing 1 at least partially overlaps with the positive projection of the first area 101 in the axial direction of the housing 1.

[0121] In the embodiment of the present application, the first mounting portion 111 protrudes from the heat-conducting contact surface 1011 of the first area 101, and the positive projection of the first mounting portion 111 in the axial direction of the housing 1 is located within the positive projection of the heat-conducting contact surface 1011 in the axial direction of the housing 1.

[0122] Specifically, the number of the first mounting portions 111 is three and they protrude from the heat-conducting contact surface 1011 at annular intervals, and the first mounting portion 111 keeps a certain distance from the columnar structure provided with the second mounting holes 10112, so as to avoid interference in the installation of the motor assembly 21 and the control board 22.

[0123] Please refer to Figure 9 , the outer peripheral side wall of the housing of the motor assembly 21 protrudes radially outward to form a flange with perforations, and the number of the perforations is three and they are arranged in one-to-one correspondence with the first mounting interfaces 1111.

[0124] The motor assembly 21 can be fixedly connected to the first housing 11 through the first heat-conducting fasteners 3 passing through the flange and the first mounting portion 111.

[0125] Specifically, the number of the first heat-conducting fasteners 3 is three and they are arranged in one-to-one correspondence with the above-mentioned first mounting interfaces 1111.

[0126] The three first heat-conducting fasteners 3 are installed on the motor assembly 21 through the above-mentioned perforations.

[0127] In some embodiments, in order to improve the connection firmness between the motor assembly 21 and the first housing 11, at least part of the outer side wall surface of at least one of the above-mentioned first mounting portions 111 can be made to protrude radially outward to form a strip-shaped limiting structure. Correspondingly, the corresponding position of the housing of the motor assembly 21 is recessed inward to form a limiting groove that cooperates with the strip-shaped limiting structure. The motor assembly 21 and the first housing 11 can be quickly assembled through the mutually cooperating strip-shaped limiting structure and the limiting groove.

[0128] In some embodiments, a certain amount of heat-conducting medium is provided between the motor assembly 21 and the first housing 11.

[0129] Please refer to Figure 9 Figure 9 , since the first mounting portion 111 protrudes from the heat-conducting contact surface 1011 of the first region 101, and a certain amount of heat-conducting medium is coated on the surface of the heat-conducting contact surface 1011, there can also be a certain amount of heat-conducting medium between the motor assembly 21 and the heat-conducting contact surface 1011. At this time, the motor assembly 21 can achieve heat-conducting connection with the first region 101 in ways such as direct contact with the heat-conducting contact surface 1011, contact with the heat-conducting contact surface 1011 through the heat-conducting medium, and connection with the first region 101 through the first heat-conducting fastener 3.

[0130] The end cover 6, which is at least partially located at the end of the motor assembly 21 facing away from the housing 1, is fixedly connected to at least one of the motor assembly 21 and the housing 1.

[0131] Please refer to Figure 10 Figure 10 , the end cover 6 is fixedly connected to the first housing 11 in the housing 1, and can be heat-conductively connected to the first region 101 through the third heat-conducting fastener 7.

[0132] Specifically, the second mounting portion 112 protrudes from the first region 101, and the end cover 6 is fixedly connected to the first housing 11 through the second mounting portion 112. The orthographic projection of the second mounting portion 112 on the axial direction of the housing 1 at least partially coincides with the orthographic projection of the first region 101 on the axial direction of the housing 1.

[0133] Please refer to Figure 10 Figure 10 , the second mounting portion 112 is also arranged on the heat-conducting contact surface 1011. In order to avoid interference during the assembly of each component, the first mounting portion 111, the second mounting portion 112, and the second mounting hole 10112 are all arranged at intervals.

[0134] The second mounting portion 112 has a second mounting interface 1121, and the second mounting interface 1121 is configured to realize the fixed connection between the end cover 6 and the housing 1 through the third heat-conducting fastener 7.

[0135] The structure of the second mounting interface 1121 is basically the same as that of the first mounting interface 1111, and both are through holes or blind holes with internal threads. When the third heat-conducting fastener 7 fixedly mounts the end cover 6 on the first housing 11 through the second mounting interface 1121, the third heat-conducting fastener 7 can also achieve a certain heat-conducting function through the second mounting portion 112, that is, at this time, the third heat-conducting fastener 7 can realize the coupling of the fixing function and the heat-conducting function.

[0136] Under the fastening action of the third heat-conducting fastener 7, a heat-conduction enhancement cross-section can be formed between the end cover 6 and the first housing 11, further enhancing the heat-conduction effect of the first region 101 (the first housing 11).

[0137] Specifically, the number of the second mounting parts 112 is three, and they are convexly arranged on the heat conduction contact surface 1011 at annular intervals. Please refer to Figure 9 , the end cover 6 is provided with through holes for cooperating with the second mounting interfaces 1121. The number of the through holes is three and they are arranged in one-to-one correspondence with the second mounting interfaces 1121. The end cover 6 can be fixedly mounted on the first housing 11 through the third heat conduction fasteners 7 penetrating through the end cover 6 and the second mounting parts 112.

[0138] In some embodiments, an appropriate amount of heat conduction medium is filled between one end of the end cover 6 close to the housing 1 and the first housing 11.

[0139] Please refer to Figure 10 , the second mounting parts 112 are convexly arranged on the heat conduction contact surface 1011 of the first area 101, and a certain amount of heat conduction medium is coated on the surface of the heat conduction contact surface 1011. Therefore, there can also be a certain amount of heat conduction medium between the end cover 6 connected to the first area 101 through the second mounting parts 112 and the heat conduction contact surface 1011. At this time, the end cover 6 can realize heat conduction connection with the first area 101 in ways such as directly contacting the heat conduction contact surface 1011, contacting the heat conduction contact surface 1011 through the heat conduction medium, and connecting with the first area 101 through the third heat conduction fasteners 7.

[0140] In some embodiments, the end cover 6 and the first housing 11 are assembled by a zero-clearance fitting process in one clamping to improve the positioning accuracy of the end cover 6 and the first housing 11 and reduce the vibration noise caused by their non-concentricity.

[0141] Of course, in other similar embodiments, the end cover 6 can also be set to be fixedly mounted on the motor assembly 21. At this time, the above-mentioned second mounting parts 112 can be set to be convexly arranged on the outer shell of the motor assembly 21, and its connection structure can refer to the previous text and will not be elaborated here.

[0142] It can be understood that the fan 10 provided by the embodiments of the present application has good heat conduction performance, can realize more efficient heat dissipation, thereby reducing the risk of performance degradation caused by heat, and can improve the working efficiency and service life of the fan 10 to a certain extent. At the same time, the housing 1 formed by different material combinations can also take into account factors such as the processing cost and equipment weight of the fan 10 on the premise of ensuring the heat dissipation effect. In addition, the above structure can not only help improve the maximum operating power of the fan 10, but also enable the fan 10 to have a longer single high-power operation time, so that the fan 10 has better suction capacity. When the fan 10 is applied to the cleaning device 100, the cleaning device 100 can have stronger garbage picking efficiency and improve the success rate of picking large particle garbage.

[0143] Based on the same inventive concept, in a second aspect, an embodiment of the present application further provides a cleaning device 100, including the blower 10 described in any one of the above. The blower 10 is located inside the cleaning device 100 and the air outlet of the blower 10 points to the outside of the cleaning device 100. The airflow carrying a certain amount of heat discharged through the air outlet can be discharged outside the cleaning device 100, thereby avoiding heat accumulation inside the cleaning device 100 and affecting the normal operation of the cleaning device 100.

[0144] It can be understood that compared with other cleaning devices 100, the cleaning device 100 provided by the embodiment of the present application can have higher cleaning efficiency and reliability because it has a blower 10 with higher heat dissipation efficiency.

[0145] Based on the same inventive concept, in a third aspect, an embodiment of the present application further provides a cleaning system 1000, including a cleaning base station 200 and the cleaning device 100 described above.

[0146] The cleaning system 1000 provided by the embodiment of the present application includes the above cleaning device 100. Therefore, the beneficial effects of the cleaning system 1000 including any one or several of the above cleaning devices 100 will not be elaborated here.

[0147] The descriptions of the above embodiments tend to emphasize the differences between the embodiments. Their similarities or similarities can be referred to each other. For the sake of brevity, they will not be elaborated here.

[0148] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fan, characterized in that, At least for cleaning equipment, the fan comprises: A shell, the shell comprising a first region and a second region, the thermal conductivity of the first region being greater than the thermal conductivity of the second region; A heat generating element is thermally connected to the first zone.

2. The fan according to claim 1, characterized in that, The housing includes a first housing and a second housing that are axially opposite to each other and fixedly connected. The first housing forms the first zone, and the second housing forms the second zone.

3. The fan according to claim 2, characterized in that, The first shell is made of metal material, and the second shell is made of non-metal material.

4. The fan according to claim 2, wherein A first mounting portion is protruded from at least a portion of the surface of the first shell toward a side away from the second shell. The number of the first mounting portion is at least one, and the heat generating element is mounted on the first shell via the first mounting portion.

5. The fan according to claim 4, characterized in that, The first mounting portion has a first mounting interface, and the first mounting interface is configured to realize a fixed connection between the heat generating element and the first housing through a first heat conductive fastener; And / or, an orthographic projection of the first mounting portion in the axial direction of the shell at least partially overlaps with an orthographic projection of the first area in the axial direction of the shell.

6. The fan according to any one of claims 1-5, characterized in that, The heat generating element comprises a motor assembly disposed on the housing, and the motor assembly is thermally connected to the first region.

7. The blower according to claim 6, wherein An air duct is formed in the shell, and a wall surface of at least a portion of the air duct is formed by the first area; The fan also includes an impeller, which is drivingly connected to the motor assembly to generate airflow in the air duct under the drive of the motor assembly.

8. The fan according to claim 6, wherein A heat-conducting contact surface is provided on a side of the first region facing away from the second region, and a heat-conducting medium is provided between the heat-conducting contact surface and the heat-generating element.

9. The blower according to claim 8, wherein The heat generating element further comprises a control board, the control board being electrically connected to the motor assembly and at least partially located between the motor assembly and the first zone; At least a partial area of the heat-conducting contact surface protrudes along the axial direction of the housing and forms a mounting surface matching the shape of the control board, and the control board fits the mounting surface.

10. The fan according to claim 9, characterized in that, The orthographic projection of the mounting surface on the axial direction of the fan at least partially overlaps with the orthographic projection of the control board on the axial direction of the housing; And / or, a first mounting hole is formed on the control board, a second mounting hole opposite to the first mounting hole is formed on the thermal contact surface, and the control board is fixedly mounted on the thermal contact surface by a second thermal fastener penetrating through the first mounting hole and the second mounting hole.

11. The blower according to claim 7, wherein The fan further includes an end cover, at least a portion of which is located at an end of the motor assembly facing away from the housing and is fixedly connected to at least one of the motor assembly and the housing.

12. The fan according to claim 11, characterized in that, The first area of the shell is also protruded with a second mounting portion, and the end cover is fixedly connected to the second mounting portion.

13. The fan according to claim 12, characterized in that, The second mounting portion has a second mounting interface, and the second mounting interface is configured to realize a fixed connection between the end cover and the housing through a third heat-conducting fastener; And / or, the orthographic projection of the second mounting portion in the axial direction of the shell at least partially overlaps with the orthographic projection of the first area in the axial direction of the shell.

14. The fan according to claim 11, characterized in that, The motor assembly further includes a rotating shaft, one end of the rotating shaft is rotatably connected to the end cover, and the other end passes through the housing through a bearing and is connected to the impeller; Wherein, the bearing is mounted on the housing through the first area.

15. The blower according to claim 14, characterized in that, An elastic pre-tightening member is arranged between the bearing and the housing, and the elastic pre-tightening member is sleeved on the rotating shaft.

16. The fan according to any one of claims 1-5, characterized in that, A heat insulation layer is arranged between the first area and the second area, and the heat insulation layer is used to inhibit heat conduction between the first area and the second area; And / or, the housing is a volute structure.

17. A cleaning device, characterized in that, It includes the blower according to any one of claims 1-16.

18. A cleaning system, characterized in that, It includes a cleaning device and a cleaning base station, the cleaning device is the cleaning device according to claim 17, and the cleaning base station and the cleaning device are used in cooperation.

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