Fan, cleaning equipment and cleaning system

Abstract

The utility model 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; the heating element is in heat conduction connection with the first area; the shell is provided with an air inlet and an air outlet, and airflow flowing from the air inlet to the air outlet flows through at least part of 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, and more specifically, relates to a fan, cleaning equipment and cleaning system. Background Technology

[0002] In cleaning equipment such as vacuum cleaners and robotic vacuum cleaners, the fan is a key component, responsible for generating airflow to suck up dust and other debris. Currently, during operation, the motor and other heat-generating components of the fan produce a significant amount of heat. If this heat cannot be dissipated promptly, the internal temperature of the fan will become excessively high, affecting its performance and lifespan. Current technologies for fan cooling systems often suffer from poor heat dissipation performance, failing to meet the high-efficiency cooling requirements of cleaning equipment. Utility Model Content

[0003] This application aims to solve the problem of heat buildup affecting the normal operation of fans, so as to improve the heat dissipation effect of fans to at least some extent.

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

[0005] In a first aspect, a fan is provided for use in cleaning equipment. The fan includes a housing and a heating element, the housing comprising a first region and a second region, the first region having a higher thermal conductivity than the second region; the heating element is thermally connected to the first region; wherein the housing has an air inlet and an air outlet, and airflow from the air inlet to the air outlet flows through at least a portion of the first region.

[0006] In one possible implementation, the housing includes a first housing and a second housing arranged axially opposite to each other and fixedly connected, the first housing forming the first region and the second housing forming the second region.

[0007] In one possible implementation, the first housing is made of a metallic material, and the second housing is made of a non-metallic material.

[0008] In one feasible implementation, at least a portion of the surface of the first housing is provided with a first mounting portion protruding toward the side away from the second housing, and the number of the first mounting portions is at least one, and the heating element is mounted on the first housing through the first mounting portion.

[0009] In one feasible implementation, the first mounting part has a first mounting interface, which is configured to achieve a fixed connection between the heating element and the first housing via a first thermally conductive fastener.

[0010] In one 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 region on the axial direction of the housing.

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

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

[0013] The fan also includes an impeller, which is connected to the motor assembly to generate airflow in the duct under the drive of the motor assembly.

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

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

[0016] At least a portion of the thermally conductive contact surface protrudes along the axial direction of the housing and forms a mounting surface that matches the shape of the control plate, the control plate being in contact with the mounting surface.

[0017] In one feasible implementation, the orthographic projection of the mounting surface on the axial direction of the fan at least partially coincides with the orthographic projection of the control panel on the axial direction of the housing.

[0018] In one feasible implementation, the control board has a first mounting hole, and the thermally conductive contact surface has a second mounting hole opposite to the first mounting hole. The control board is fixedly mounted on the thermally conductive contact surface by a second thermally conductive fastener passing through the first mounting hole and the second mounting hole.

[0019] In one possible implementation, the fan further includes an end cap, at least a portion of which 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 one feasible implementation, the first area of ​​the housing is further provided with a second mounting portion, and the end cap is fixedly connected to the second mounting portion.

[0021] In one feasible implementation, the second mounting part has a second mounting interface, which is configured to achieve a fixed connection between the end cap and the housing via a third thermally conductive fastener.

[0022] In one feasible implementation, the orthographic projection of the second mounting portion on the axial direction of the housing at least partially coincides with the orthographic projection of the first region on the axial direction of the housing.

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

[0024] The bearing is mounted on the housing via the first area.

[0025] In one feasible implementation, an elastic preload is provided between the bearing and the housing, and the elastic preload is sleeved on the rotating shaft.

[0026] In one feasible implementation, a heat insulation layer is provided between the first zone and the second zone, the heat insulation layer being used to suppress heat conduction between the first zone and the second zone.

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

[0028] In a second aspect, a cleaning device is provided, comprising the fan described in any of the preceding claims.

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

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

[0031] The fan provided in this application embodiment is used for cleaning equipment and includes a housing and a heating element. The housing includes a first zone and a second zone with different thermal conductivity, wherein the thermal conductivity of the first zone is greater than that of the second zone. The heating element is thermally connected to the first zone, thereby helping to improve the problem of heat accumulation at the heating element due to continuous operation. Simultaneously, the heat generated by the heating element during operation can be quickly conducted to the housing through the first zone. The high thermal conductivity of the first zone effectively improves the heat dissipation effect at the heating element. Compared with related structures, the fan provided in this application embodiment can achieve more efficient heat dissipation, thereby reducing the risk of performance degradation due to heat generation and improving the working efficiency and service life of the fan to a certain extent. Furthermore, the housing designed with different material combinations can balance the manufacturing cost and equipment weight while ensuring heat dissipation.

[0032] The cleaning equipment provided in this application includes the aforementioned fan. Therefore, the beneficial effects of the cleaning equipment including any one or more of the aforementioned fans will not be elaborated further here. In addition, the cleaning equipment with the aforementioned fan also has higher cleaning efficiency and reliability. The cleaning system provided in this application includes the aforementioned cleaning equipment. Therefore, the beneficial effects of the cleaning system including any one or more of the aforementioned cleaning equipment will not be elaborated further here. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the overall structure of the cleaning system provided in the embodiments of this application;

[0035] Figure 2 This is a schematic diagram of the structure of the cleaning equipment provided in the embodiments of this application;

[0036] Figure 3 This is a partial internal structure diagram of the cleaning equipment provided in the embodiments of this application;

[0037] Figure 4A and Figure 4B This is a schematic diagram of the structure of the fan provided in the embodiments of this application;

[0038] Figure 5 An exploded view of the fan provided in the embodiments of this application;

[0039] Figure 6 A top view of the fan provided in an embodiment of this application;

[0040] Figure 7 This is an assembly diagram of the casing and heating element in a fan provided in an embodiment of this application;

[0041] Figure 8 An assembly diagram of the first housing and control board in a fan provided in an embodiment of this application;

[0042] Figure 9 This is a schematic diagram of the assembly of the first housing and the motor assembly in the fan provided in an embodiment of this application;

[0043] Figure 10 This is a schematic diagram of the assembly of the first housing and the end cover in the fan provided in the embodiment of this application.

[0044] The following are the labeling elements in the figure:

[0045] 10. Fan; 20. Cleaning components; 100. Cleaning equipment; 200. Cleaning base station; 1000. Cleaning system;

[0046] 1. Housing; 101. First zone; 1011. Thermally conductive 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 part; 1111. First mounting interface; 112. Second mounting part; 1121. Second mounting interface; 12. Second housing; 2. Heating element; 21. Motor assembly; 211. Shaft; 212. Bearing; 213. Stator; 214. Rotor; 22. Control board; 221. First mounting hole; 3. First thermally conductive fastener; 4. Impeller; 5. Second thermally conductive fastener; 6. End cover; 7. Third thermally conductive fastener. Detailed Implementation

[0047] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

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

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

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0052] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0054] This application provides a fan 10, a cleaning device 100, and a cleaning system 1000, wherein the fan 10 is used at least in the cleaning device 100. The cleaning device 100 can be applied to a cleaning system 1000 having a cleaning base station 200.

[0055] The cleaning device 100 can be a vacuum cleaner or other floor cleaning products used solely for floor cleaning, such as a robotic vacuum cleaner or a robotic mop. The cleaning base station 200 can be a base station-type structure that works in conjunction with the cleaning device 100 and has a charging function.

[0056] Figure 1 This is a schematic diagram of the overall structure of the cleaning system 1000 provided in this application embodiment. Figure 2 This is a schematic diagram of the structure of the cleaning equipment 100 provided in the embodiments of this application.

[0057] Please see Figure 1 and Figure 2 The cleaning system 1000 includes a cleaning device 100 and a cleaning base station 200 used in conjunction with each other, and the cleaning base station 200 has at least a charging function.

[0058] It is understood that cleaning equipment 100 can be a device that automatically performs cleaning operations on a certain area to be cleaned; please refer to [link / reference]. Figure 2 When the cleaning equipment 100 starts working, it can start from the cleaning base station 200 and perform the corresponding cleaning task. When the cleaning equipment 100 completes the cleaning task or other situations require the cleaning task to be stopped, the cleaning equipment 100 can return to the cleaning base station 200 to perform at least one or more of the following tasks: charging, water replenishment, cleaning, dust collection, etc.

[0059] The cleaning equipment 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 component 20 and a dust box that cooperate with the fan 10, wherein the cleaning component 20 is used to contact the surface to be cleaned and includes at least one of a roller brush and a side brush; the dust box is located between the fan 10 and the cleaning component 20 along the direction of the airflow generated when the fan 10 is started.

[0061] When the cleaning equipment 100 is used to clean the ground, the cleaning component 20 is activated and collects dust, hair, small particles and other debris on the ground below the cleaning equipment 100. When the fan 10 is activated, the debris below the cleaning equipment 100 can be sucked into the cleaning equipment 100 through the airflow channel constructed inside the cleaning equipment 100.

[0062] Please see Figure 3 . Figure 3 This is a partial internal structure diagram of the cleaning equipment 100 provided in an embodiment of this application. Figure 3 The cleaning component 20 is a roller brush disposed on the lower surface of the cleaning device 100. When the fan 10 is started, the generated airflow carries the debris raised by the roller brush through the airflow channel towards the fan 10 and into the dust box (located between the fan 10 and the roller brush, not shown in the figure) located between the fan 10 and the roller brush. In this process, the airflow flows from the bottom of the cleaning device 100 to the interior of the cleaning device 100, and collects the debris through the dust box, thereby achieving efficient dust collection and cleaning of the ground.

[0063] It is understood that in some embodiments, the cleaning device 100 may also include a cleaning base station with a dust collection function, and the fan 10 is located inside the cleaning base station. The cleaning base station is also provided with a dust bag and a dust collection duct, and the fan 10 is connected to the dust collection duct to suck the debris in the dust box of the cleaning host (e.g., a sweeper or floor scrubber) into the dust bag through the dust collection duct.

[0064] Figure 4A and Figure 4B This is a schematic diagram of the structure of the fan 10 provided in the embodiment of this application.

[0065] Please see Figure 4A and Figure 4B This application provides a fan 10 for use in the cleaning equipment 100 described above.

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

[0067] In the fan 10 provided in this embodiment, by setting the thermal conductivity of the first zone 101 to be greater than that of the second zone 102 and making the heating element 2 thermally connected to the first zone 101, the first zone 101 can serve as the main heat dissipation area. The first zone 101 can efficiently absorb and conduct the heat generated by the heating element 2, significantly improving heat dissipation efficiency and ensuring that key components of the fan 10 (such as the heating element 2) operate at a suitable temperature, reducing performance degradation and failure risks caused by high temperatures. Furthermore, by using materials with different thermal conductivity for the first zone 101 and the second zone 102, the use of thermally conductive materials can be reduced, effectively lowering the production cost of the fan 10.

[0068] The fan 10 generates heat during operation, and the heat dissipation capacity of the fan 10 disclosed in related technologies is relatively limited. After prolonged operation, the heat accumulated inside the fan 10 becomes excessive due to its limited heat dissipation capacity, resulting in a high internal temperature. This not only affects the working efficiency of the fan 10, causing a decrease in the airflow velocity / volume generated by the fan 10, but also accelerates the aging of the fan 10's internal components, affecting its service life. In this embodiment, the heating element 2 in the fan 10 is thermally connected to the first zone 101, and the thermal conductivity of the first zone 101 is greater than that of the second zone 102. Therefore, the heat generated by the heating element 2 during operation is preferentially transferred to the first zone 101 through thermal conduction. Thanks to its excellent thermal conductivity, the first zone 101 can quickly disperse the heat, accelerating the dissipation of heat to the surrounding environment by increasing the heat dissipation area.

[0069] Therefore, the fan 10 provided in this embodiment has good heat dissipation efficiency. Under the premise that other conditions remain unchanged, the high heat dissipation efficiency can reduce the possibility of overheating when the fan 10 is working, thereby enabling the fan 10 to work at high power for a long time, or to have higher power (operating under a higher load allowed by the fan 10 without exceeding the temperature limit, thereby indirectly supporting a higher maximum power, etc.).

[0070] Specifically, the casing 1 of the fan 10 is provided with an air inlet 104 and an air outlet 105. The air inlet 104 is formed in the second zone 102 of the fan 10, and the air outlet 105 is formed by the enclosure of the first zone 101 and the second zone 102 of the fan 10. When the fan 10 is working, the airflow flows into the casing 1 through the air inlet 104 and is discharged through the air outlet 105. In this process, the airflow discharged through the air outlet 105 flows through at least a part of the first zone 101 and carries the heat from the first zone 101 out of the air outlet 105, which can further accelerate heat conduction and ensure that the heat generated by the fan 10 during operation can be quickly dissipated through the first zone 101, ensuring the stable operation of the fan 10 during long-term operation and maintaining a high-power working state for a longer period of time.

[0071] Please see Figure 4A and Figure 4B The fan 10 has a volute structure, wherein the housing 1 includes a first housing 11 and a second housing 12 arranged opposite to each other along the axial direction and fixedly connected. Both the first housing 11 and the second housing 12 are volute-shaped and can be snapped together to form a hollow housing 1. The first housing 11 forms a first region 101, and the second housing 12 forms a second region 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 function of the fan 10.

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

[0073] The insulation layer is used to inhibit the transfer of heat from the first zone 101 to the second zone 102, so as to protect the second zone 102 and prevent it from being damaged at high temperatures.

[0074] Specifically, assuming the first housing 11 constitutes the first region 101 and the second housing 12 constitutes the second region 102, a heat insulation layer located at the connection between the first housing 11 and the second housing 12 can be made of a material with low thermal conductivity and superior high-temperature resistance to achieve a better thermal barrier effect between the first housing 11 and the second housing 12. For example, the heat insulation layer may include a heat-insulating strip.

[0075] The shell 1, which is composed of the first shell 11 and the second shell 12, is a hollow structure, and an air duct 103 is formed inside it. At least a portion of the wall of the air duct 103 is composed of the first section 101. The air inlet 104 and the air outlet 105 are located at the two ends of the air duct 103, respectively, and an airflow path is formed between them through the air duct 103.

[0076] When the fan 10 is running, the air inlet 104 can be used to introduce external gas into the air duct 103, and the air outlet 105 can be used to discharge the gas in the air duct 103, thereby forming an airflow passing through the first zone 101. The first zone 101 absorbs the heat emitted from the heat-generating element 2 and transfers the heat to the air duct 103. The airflow passing through the air duct 103 can carry the aforementioned heat and be discharged through the air outlet 105, thereby effectively improving the heat dissipation efficiency of the heat-generating element 2 and improving the heat dissipation performance of the fan 10.

[0077] Specifically, at least a portion of the wall surface of the first zone 101 facing the air duct 103 is a heat dissipation surface. At least a portion of the airflow within the air duct 103 can flow over the aforementioned heat dissipation surface and carry away the heat from the heat dissipation surface through heat exchange or other means.

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

[0079] Specifically, the metallic material used to make the first housing 11 includes at least one of aluminum alloy, copper, etc.; the non-metallic material used to make the second housing 12 includes plastic, etc.

[0080] Plastic materials possess good strength and insulation properties, while also offering advantages such as low processing costs and light weight. Using metallic materials to fabricate the first housing 11 and non-metallic materials to fabricate the second housing 12 can improve the heat dissipation effect of the fan 10 housing 1 while helping to reduce the weight and manufacturing cost of the housing 1.

[0081] In other similar embodiments, the first housing 11 may be configured such that only a portion of its structure constitutes the first region 101, that is, the first region 101 is located only in a portion of the first housing 11. In this case, at least a portion of the remaining regions of the first housing 11 can cooperate with the second housing 12 to jointly constitute the second region 102.

[0082] Specifically, the first housing 11 includes metallic and non-metallic materials, wherein the metallic material constitutes the first region 101. For example, the first housing 11 can be a plastic housing with an opening, through which a metal sheet is fixed to the plastic housing and constitutes the first region 101. The metal sheet can be embedded into the opening of the first housing 11.

[0083] An impeller 4 is also provided inside the housing 1. The heating element 2 of the fan 10 includes a motor assembly 21 partially located inside the housing 1. Please refer to [link / reference]. Figure 4A and Figure 4B The impeller 4 is connected to the motor assembly 21 for transmission, so that under the drive of the motor assembly 21, an airflow is generated in the air duct 103 from the air inlet 104 to the air outlet 105.

[0084] Please see Figure 4A The impeller 4 is located inside the housing 1 and is positioned towards the air inlet 104 via the heating element 2. When the fan 10 is started, the impeller 4 can rotate under the drive of the heating element 2 and guide the airflow from the air inlet 104 to the air outlet 105.

[0085] Please see Figure 4B In addition to the motor assembly 21, the heating element 2 of the fan 10 also 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 is 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 status of the motor assembly 21.

[0087] Please see Figure 4B The fan 10 also includes an end cap 6 fixedly installed on the outside of the first section 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 This is an exploded view of the fan 10 provided in the embodiments of this application. Figure 6 This is a top view of the fan 10 provided in the embodiment of this application. Figure 7 This is an assembly diagram of the housing 1 and the heating element 2 in the fan 10 provided in this embodiment of the application. Figure 8 This is an assembly diagram of the first housing 11 and the control board 22 in the fan 10 provided in the embodiments of this application. Figure 9 This is a schematic diagram of the assembly of the first housing 11 and the motor assembly 21 in the fan 10 provided in the embodiments of this application. Figure 10 This is a schematic diagram of the assembly of the first housing 11 and the end cover 6 in the fan 10 provided in the embodiments of this application.

[0089] Please see Figure 5 and Figure 6 The fan 10 provided in this embodiment 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 provided on the second housing 12. The first housing 11 and the second housing 12 can be fastened together to form an air outlet 105. An impeller 4 is also provided inside the housing 1. The impeller 4 can cooperate with the first housing 11 and the second housing 12 to form an air duct 103 inside the housing 1. The air duct 103 is connected to 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 zone 101 via the bearing 212. In order to improve the connection between the bearing 212 and the first zone 101, an elastic preload is provided between the bearing 212 and the first housing 11. The elastic preload is sleeved on the rotating shaft 211 and abuts against the surface of the first housing 11.

[0091] The elastic preload can be used to provide axial preload and radial sealing interface, which can buffer the vibration that may be generated when the shaft 211 rotates to a certain extent, and ensure the stability of the shaft 211 rotation. When the elastic preload is installed, the overall operating 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 preload and the rotating shaft 211 to seal the axial and radial interfaces, thereby providing a certain degree of sealing and waterproofing.

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

[0094] Specifically, the elastic preload can be a metal corrugated washer, which also has a certain thermal conductivity.

[0095] At least a portion of the surface of the first housing 11 is provided with a first mounting portion 111 protruding toward the side away from the second housing 12. The number of first mounting portions 111 is at least one, and the heating element 2 is mounted on the first housing 11 through the first mounting portion 111.

[0096] For details, please refer to Figure 6 The number of first mounting parts 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 parts 111 to achieve thermally conductive connection with the first housing 11.

[0097] It should be noted that the first mounting part 111 has a first mounting interface 1111, which is configured to achieve a fixed connection between the heating element 2 and the first housing 11 through the first thermally conductive fastener 3.

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

[0099] The first mounting portion 111 is formed on the first housing 11, meaning that the first mounting portion 111 is also formed in the first region 101. It has good thermal conductivity. When the first thermally conductive fastener 3 fixes the heating element 2 to the first housing 11 through the first mounting interface 1111, the first thermally conductive fastener 3 can also achieve a certain thermal conductivity function through the first mounting portion 111, that is, to achieve the coupling of fixing and heat conduction. Under the fastening action of the first thermally conductive fastener 3, a heat conduction enhancement 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 region 101 (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 thermal grease) can be filled between the first mounting interface 1111 and the first thermally conductive fastener 3 to further improve the heat conduction efficiency between the heating element 2 and the first zone 101.

[0101] Please see Figure 6The heating element 2 has an end cap 6 at the end facing away from the housing 1. The motor assembly 21, the control board 22 and the end cap 6 are respectively fixedly installed on the first housing 11 by the first thermally conductive fastener 3, the second thermally conductive fastener 5 and the third thermally conductive fastener 7.

[0102] Please refer to the following: Figures 7-10 The thermally conductive connection structure between the heating element 2 and the first zone 101 is described in detail.

[0103] Please see Figure 7 The motor assembly 21, the control board 22, and the end cover 6 are all thermally connected to the first region 101. At least a portion of the control board 22 is located between the motor assembly 21 and the first region 101 and can directly contact the surface of the first region 101. The end cover 6 is located on the side of the control board 22 facing away from the housing 1, and at least a portion of the motor assembly 21 is located between the control board 22 and the end cover 6.

[0104] Please see Figure 8 The first region 101 (first housing 11) has a thermally conductive contact surface 1011 on the side facing away from the second region 102. At least a portion of the thermally conductive 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 plate 22. The control plate 22 can be mounted on the thermally conductive contact surface 1011 of the first region 101 by fitting it against the mounting surface 10111.

[0105] In order to further improve the heat transfer efficiency between the control board 22 and the thermally conductive contact surface 1011, in some embodiments, at least a portion of the thermally conductive contact surface 1011 is coated with a thermally conductive medium, and the control board 22 can contact at least a portion of the thermally conductive contact surface 1011 through the thermally conductive contact energy.

[0106] The heat-conducting medium can fill the tiny gap 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 zone 101.

[0107] Specifically, the aforementioned thermally conductive medium can be coated on the surface of the mounting surface 10111, or it can be coated in the area of ​​the remaining thermally conductive contact surfaces 1011 surrounding the mounting surface 10111. The thermally conductive medium can be thermally conductive silicone or other materials with similar effects to help enhance the thermal conduction between the heating element 2 and the first region 101.

[0108] Specifically, the orthographic projection of the mounting surface 10111 on the axial direction of the fan 10 at least partially coincides with the orthographic projection of the control board 22 on the axial direction of the housing 1, 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 zone 101. The heat generated by the operation of the control board 22 can be effectively and timely conducted to the first zone 101 through the mounting surface 10111 and the heat-conducting medium.

[0109] Please see Figure 8 Along the axial direction of the first housing 11, the mounting surface 10111 is a C-shaped irregular structure, and the control plate 22 is a hollow irregular ring structure, with the part of its axial surface facing the housing 1 side able to fit against the mounting surface 10111.

[0110] It should be noted that the aforementioned irregularly shaped mounting surface 10111 has a certain foolproof effect, which can help reduce the positioning difficulty when the control board 22 is installed on the mounting surface 10111.

[0111] To further improve the contact strength between the control plate 22 and the mounting surface 10111, in some embodiments, a first mounting hole 221 is provided on the control plate 22, and a second mounting hole 10112 is provided on the thermally conductive contact surface 1011. When the control plate 22 and the mounting surface 10111 are in contact, the first mounting hole 221 and the second mounting hole 10112 are exactly opposite to each other. The control plate 22 can be fixedly mounted on the thermally conductive contact surface by a second thermally conductive fastener 5 passing through the first mounting hole 221 and the second mounting shell.

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

[0113] The second mounting hole 10112 can be formed on the mounting surface 10111 or on other areas of the thermally conductive contact surface 1011 other than the mounting surface 10111.

[0114] Please see Figure 8 The second mounting hole 10112 is opened on the area of ​​the thermally conductive contact surface 1011 other than the mounting surface 10111. In order to facilitate the fixed connection between the second thermally conductive fastener 5 and the second mounting hole 10112, a portion of the surface of the thermally conductive contact surface 1011 facing the control plate 22 protrudes towards the control plate 22 and forms a columnar structure with the second mounting hole 10112.

[0115] In this embodiment, the second thermally conductive fastener 5 can be a bolt structure with external threads, and correspondingly, the second mounting hole 10112 is a through hole or blind hole structure with internal threads.

[0116] The second thermally conductive fastener 5 has good thermal conductivity. When the control board 22 is installed in the first zone 101 through the second thermally conductive fastener 5, the control board 22 can transfer heat to the first zone 101 through the thermally conductive contact surface 1011 and the second thermally conductive fastener 5 at the same time, so as to further enhance the thermal conduction effect between the control board 22 and the first zone 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 thermal grease) can be filled between the second mounting hole 10112 and the second thermally conductive fastener 5 to further improve the heat conduction efficiency between the control board 22 and the first zone 101.

[0118] Please see Figure 8 and Figure 9 Multiple second mounting holes 10112 are provided at intervals on the heat-conducting contact surface 1011 and are spaced apart from the first mounting part 111.

[0119] Please see Figure 9 The motor assembly 21 in the heating element 2 is thermally connected to the first zone 101 and can be fixed to the first housing 11 by the first mounting part 111.

[0120] Please refer to the preceding text for the structure of the first mounting portion 111. In addition, along the axial direction of the housing 1, the orthographic projection of the first mounting portion 111 on the axial direction of the housing 1 at least partially overlaps with the orthographic projection of the first region 101 on the axial direction of the housing 1.

[0121] In this embodiment of the application, the first mounting part 111 protrudes from the thermally conductive contact surface 1011 of the first region 101, and the orthogonal projection of the first mounting part 111 in the axial direction of the housing 1 is located within the orthogonal projection of the thermally conductive contact surface 1011 in the axial direction of the housing 1.

[0122] Specifically, there are three first mounting parts 111 that are annularly spaced and protrude from the heat-conducting contact surface 1011. The first mounting parts 111 and the columnar structure with the second mounting hole 10112 are kept at a certain distance to avoid interference between the installation of the motor assembly 21 and the control board 22.

[0123] Please see Figure 9 The outer peripheral sidewall of the motor assembly 21 housing protrudes radially outward and forms a flange with perforations. There are three perforations, which correspond one-to-one with the first mounting interface 1111.

[0124] The motor assembly 21 can be fixedly connected to the first housing 11 by a first thermally conductive fastener 3 that passes through the flange and the first mounting portion 111.

[0125] Specifically, the number of the first thermally conductive fasteners 3 is three, and they are set one-to-one with the first mounting interface 1111 mentioned above.

[0126] Three first thermally conductive fasteners 3 are installed on the motor assembly 21 through the aforementioned perforations.

[0127] In some embodiments, to improve the connection strength between the motor assembly 21 and the first housing 11, at least a portion of the outer surface of the at least one first mounting portion 111 can be radially protruding 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 limiting groove.

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

[0129] Please see Figure 9 Since the first mounting part 111 protrudes from the thermally conductive contact surface 1011 of the first region 101, and the surface of the thermally conductive contact surface 1011 is coated with a certain amount of thermally conductive medium, there can also be a certain amount of thermally conductive medium between the motor assembly 21 and the thermally conductive contact surface 1011. At this time, the motor assembly 21 can achieve thermally conductive connection with the first region 101 by directly contacting the thermally conductive contact surface 1011, contacting the thermally conductive contact surface 1011 through the thermally conductive medium, or connecting to the first region 101 through the first thermally conductive fastener 3.

[0130] An end cap 6, located at least partially 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 see Figure 10 The end cap 6 is fixedly connected to the first housing 11 in the housing 1, and can be thermally connected to the first zone 101 through the third thermally conductive fastener 7.

[0132] Specifically, the first region 101 is provided with a second mounting portion 112, 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 see Figure 10The second mounting part 112 is also provided on the thermally conductive contact surface 1011. In order to avoid interference between the components during assembly, the first mounting part 111, the second mounting part 112 and the second mounting hole 10112 are all spaced apart.

[0134] The second mounting part 112 has a second mounting interface 1121, which is configured to achieve a fixed connection between the end cover 6 and the housing 1 via a third thermally conductive fastener 7.

[0135] The structure of the second mounting interface 1121 is basically the same as that of the first mounting interface 1111, both being through holes or blind holes with internal threads. When the third thermally conductive fastener 7 fixes the end cap 6 to the first housing 11 through the second mounting interface 1121, the third thermally conductive fastener 7 can also achieve a certain heat conduction function through the second mounting part 112, that is, at this time the third thermally conductive fastener 7 can achieve the coupling of fixing function and heat conduction function.

[0136] Under the fastening action of the third thermally conductive fastener 7, a thermally conductive enhanced cross section can be formed between the end cap 6 and the first housing 11, further enhancing the thermal conductivity of the first region 101 (first housing 11).

[0137] Specifically, there are three second mounting portions 112, which are arranged in a ring-shaped pattern and protrude from the thermally conductive contact surface 1011. See also... Figure 9 The end cap 6 has three through holes for cooperating with the second mounting interface 1121, and each through hole corresponds to one of the second mounting interfaces 1121. The end cap 6 can be fixedly mounted to the first housing 11 by a third thermally conductive fastener 7 that passes through the end cap 6 and the second mounting part 112.

[0138] In some embodiments, an appropriate amount of heat-conducting medium is filled between the end cap 6 near the housing 1 and the first housing 11.

[0139] Please see Figure 10 The second mounting portion 112 protrudes from the thermally conductive contact surface 1011 of the first region 101, and the surface of the thermally conductive contact surface 1011 is coated with a certain amount of thermally conductive medium. Therefore, the end cap 6, which is connected to the first region 101 through the second mounting portion 112, can also have a certain amount of thermally conductive medium between itself and the thermally conductive contact surface 1011. At this time, the end cap 6 can achieve thermally conductive connection with the first region 101 by directly contacting the thermally conductive contact surface 1011, by contacting the thermally conductive contact surface 1011 through the thermally conductive medium, or by connecting to the first region 101 through the third thermally conductive fastener 7.

[0140] In some embodiments, the end cap 6 and the first housing 11 are assembled in one step using a zero-gap fit assembly process to improve the positioning accuracy of the end cap 6 and the first housing 11 and reduce vibration and noise caused by their misalignment.

[0141] Of course, in other similar embodiments, the end cap 6 can also be fixedly installed on the motor assembly 21. In this case, the second mounting part 112 can be provided to protrude from the outer shell of the motor assembly 21. Its connection structure can be referred to the previous text and will not be repeated here.

[0142] It is understood that the fan 10 provided in this embodiment has good thermal conductivity, enabling more efficient heat dissipation and reducing the risk of performance degradation due to heat generation. This, to a certain extent, improves the working efficiency and service life of the fan 10. Simultaneously, the housing 1, formed through different material combinations, balances the processing cost and weight of the fan 10 while ensuring effective heat dissipation. Furthermore, the aforementioned structure not only helps increase the maximum operating power of the fan 10 but also allows for a longer single high-power operation time, resulting in better suction capacity. When this fan 10 is applied to the cleaning equipment 100, it enhances the garbage collection efficiency and improves the success rate of picking up large particles of garbage.

[0143] Based on the same concept, in a second aspect, embodiments of this application also provide a cleaning device 100, including the fan 10 described in any of the preceding claims. The fan 10 is located inside the cleaning device 100, and the air outlet of the fan 10 points outward from 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 preventing heat from accumulating inside the cleaning device 100 and affecting the normal operation of the cleaning device 100.

[0144] It is understood that the cleaning device 100 provided in this application embodiment has higher cleaning efficiency and reliability than other cleaning devices 100 because it has a fan 10 with higher heat dissipation efficiency.

[0145] Based on the same concept, in a third aspect, embodiments of this application also provide a cleaning system 1000, including a cleaning base station 200 and the cleaning device 100 described above.

[0146] The cleaning system 1000 provided in this application includes the cleaning equipment 100 described above. Therefore, the beneficial effects of the cleaning system 1000 including any one or more of the cleaning equipment 100 described above will not be repeated here.

[0147] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0148] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fan, characterized in that, For use in cleaning equipment, the fan includes: The housing includes a first region and a second region, wherein the thermal conductivity of the first region is greater than that of the second region; A heating element, wherein the heating element is thermally connected to the first region; The housing has an air inlet and an air outlet, and the airflow from the air inlet to the air outlet flows through at least a portion of the first region.

2. The fan according to claim 1, characterized in that, The housing includes a first housing and a second housing arranged opposite to each other along the axial direction and fixedly connected, the first housing forming the first region and the second housing forming the second region.

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

4. The fan according to claim 2, characterized in that, At least a portion of the surface of the first housing is provided with a first mounting portion protruding toward the side away from the second housing, and the number of the first mounting portions is at least one, and the heating element is mounted on the first housing through the first mounting portion.

5. The fan according to claim 4, characterized in that, The first mounting part has a first mounting interface, which is configured to achieve a fixed connection between the heating element and the first housing through a first thermally conductive fastener; And / or, the orthographic projection of the first mounting portion in the axial direction of the housing at least partially overlaps with the orthographic projection of the first region in the axial direction of the housing.

6. The fan according to any one of claims 1-5, characterized in that, The heating element includes a motor assembly disposed in the housing, and the motor assembly is thermally connected to the first area.

7. The fan according to claim 6, characterized in that, An air duct is formed inside the housing, and the wall surface of at least a portion of the air duct is formed by the first region; The fan also includes an impeller, which is connected to the motor assembly to generate airflow in the duct under the drive of the motor assembly.

8. The fan according to claim 6, characterized in that, The first region has a thermally conductive contact surface on the side facing away from the second region, and a thermally conductive medium is disposed between the thermally conductive contact surface and the heating element.

9. The fan according to claim 8, characterized in that, The heating element also includes a control board, which is electrically connected to the motor assembly and is at least partially located between the motor assembly and the first region; At least a portion of the thermally conductive contact surface protrudes along the axial direction of the housing and forms a mounting surface that matches the shape of the control plate, the control plate being in contact with 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 coincides with the orthographic projection of the control panel on the axial direction of the housing; And / or, the control board has a first mounting hole, and the thermally conductive contact surface has a second mounting hole opposite to the first mounting hole. The control board is fixedly mounted on the thermally conductive contact surface by a second thermally conductive fastener passing through the first mounting hole and the second mounting hole.

11. The fan according to claim 7, characterized in that, The fan also includes an end cap, at least a portion of which is located at the 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 housing is further provided with a second mounting portion, and the end cap is fixedly connected to the second mounting portion.

13. The fan according to claim 12, characterized in that, The second mounting part has a second mounting interface, which is configured to achieve a fixed connection between the end cap and the housing via a third thermally conductive fastener; And / or, the orthographic projection of the second mounting portion in the axial direction of the housing at least partially coincides with the orthographic projection of the first region in the axial direction of the housing.

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

15. The fan according to claim 14, characterized in that, An elastic preload is provided between the bearing and the housing, and the elastic preload 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 provided between the first zone and the second zone, and the heat insulation layer is used to suppress heat conduction between the first zone and the second zone; And / or, the housing is a volute structure.

17. A cleaning device, characterized in that, The wind turbine included in any one of claims 1-16.

18. A cleaning system, characterized in that, It includes cleaning equipment and a cleaning base station, wherein the cleaning equipment is the cleaning equipment as described in claim 17, and the cleaning base station and the cleaning equipment are used in conjunction.

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