Fan assembly and cleaning equipment

Abstract

The utility model discloses a fan assembly and cleaning equipment, the fan assembly includes: a motor, the motor includes a motor shaft; the flow guide assembly comprises a flow guide shell and an impeller, the impeller is arranged in the flow guide shell, the flow guide shell is installed on the motor, a heat dissipation space is formed by the flow guide shell and the motor, a shaft hole is formed in the flow guide shell, and a motor shaft penetrates through the shaft hole and is connected with the impeller; the cooling fan is arranged in the cooling space and connected with the motor shaft, and the cooling fan, the shaft hole and the impeller are sequentially arranged in the axial direction of the motor shaft. Therefore, through the arrangement of the fan assembly, on one hand, the cooling fan can discharge hot air in the cooling space through rotary motion, and on the other hand, water or water vapor passing through the shaft hole can be prevented from entering the motor again, so that the risk that water enters the motor is avoided, and the safety and practicability of the motor are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a fan assembly and a cleaning equipment. Background Art

[0002] With the improvement of people's material living standards, cleaning equipment such as floor sweepers and floor scrubbers has gradually become an essential product in families. On the one hand, it liberates people from the complex household cleaning, and on the other hand, it enables more and more people to enjoy the life changes brought by the development of technology. These cleaning equipment rely on a fan to drive a negative pressure in the sewage suction channel, so as to suck dry and wet garbage on the ground into the sewage tank. Since the use of these cleaning equipment is inseparable from water, the importance of waterproof requirements for dry and wet motors has gradually emerged. At the same time, waterproofing and heat dissipation are two relatively conflicting roles. Therefore, the waterproofing and heat dissipation of dry and wet motors have become the key concerns of designers.

[0003] In related technologies, the waterproofing of dry and wet motors can be achieved by using a non-contact sealing structure, such as a small clearance design or a labyrinth design between moving / static parts. Since the clearance is small, the possibility of water intrusion will be reduced. Heat dissipation can be achieved by using a cooling fan, such as arranging a cooling fan between the two bearings of the motor, and introducing cooling air into the motor through the cooling fan for heat dissipation. However, in the existing technical solutions of non-contact sealing waterproofing and cooling fan heat dissipation, there will still be some water vapor entering the motor through the non-contact sealing structure, resulting in poor waterproofing effect. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a fan assembly, which can discharge the hot air in the heat dissipation space through the rotational movement of the cooling fan, and can also prevent the water or water vapor that has passed through the shaft hole from entering the motor again, thereby avoiding the risk of the motor being flooded.

[0005] The utility model further provides a cleaning equipment.

[0006] The fan assembly according to the first aspect of the utility model includes: a motor, the motor includes a motor shaft; a guiding component, the guiding component includes a guiding shell and an impeller, the impeller is arranged in the guiding shell, the guiding shell is installed on the motor and forms a heat dissipation space with the motor, the guiding shell is provided with a shaft hole, the motor shaft passes through the shaft hole and is connected with the impeller; a cooling fan, the cooling fan is arranged in the heat dissipation space and is connected with the motor shaft, along the axial direction of the motor shaft, the cooling fan, the shaft hole and the impeller are arranged in sequence.

[0007] Thus, by providing this fan assembly, on the one hand, the cooling fan can discharge the hot air in the cooling space through rotational movement, and on the other hand, it can prevent the water or water vapor that has passed through the shaft hole from entering the motor again, thereby avoiding the risk of the motor being flooded, and further improving the safety and practicality of the motor.

[0008] In some examples of the present utility model, the motor includes: a motor housing; a bearing, the bearing is arranged in the motor housing, the motor shaft passes through the bearing and extends outside the motor housing, and along the axial direction of the motor shaft, the cooling fan is located between the bearing and the shaft hole.

[0009] In some examples of the present utility model, the end face of the motor housing facing the cooling fan is provided with cooling holes, so that the air flow in the motor flows towards the cooling fan through the cooling holes.

[0010] In some examples of the present utility model, there are a plurality of the cooling holes, and the plurality of cooling holes are arranged at intervals along the circumferential direction of the motor housing.

[0011] In some examples of the present utility model, the end face of the motor housing is provided with a plurality of mounting platforms protruding towards the guide housing, and the plurality of mounting platforms are respectively installed on the guide housing through fasteners, and a cooling outlet communicating the cooling space and the external environment is formed between adjacent mounting platforms.

[0012] In some examples of the present utility model, one of a positioning post and a positioning hole is arranged on the end face of the motor housing, and the other of the positioning post and the positioning hole is arranged on the guide housing, and the positioning post and the positioning hole cooperate with each other to position in the circumferential direction of the motor housing.

[0013] In some examples of the present utility model, the guide housing includes: a base, the base is provided with the shaft hole, the base is installed on the motor and forms the cooling space with the motor; a guide cover, the guide cover is arranged on the base, the guide cover is formed with a guide inlet and a guide outlet, and is used to send the air flow at the guide inlet to the guide outlet.

[0014] In some examples of the present utility model, the base includes: a seat plate, the seat plate is connected to the motor through fasteners, and the seat plate is formed with the shaft hole; an outer ring plate, the outer ring plate is connected to the outer peripheral edge of the seat plate, the outer ring plate covers the outer periphery of the motor and is arranged at an interval from the motor, and the guide cover is connected to the outer ring plate.

[0015] In some examples of the present utility model, the guide inlet and the impeller are arranged opposite to each other along the axial direction of the motor shaft, and there are a plurality of the guide outlets, and the plurality of guide outlets are arranged around the impeller.

[0016] In some examples of the present utility model, the cooling fan includes: a shaft seat through which the motor shaft passes; a plurality of blades disposed on the shaft seat and spaced circumferentially along the shaft seat; wherein, the seat plate is provided with an avoidance groove for avoiding the shaft seat, and a shaft hole is provided at the bottom of the avoidance groove.

[0017] In some examples of the present utility model, the cross-sectional area of the bottom of the avoidance groove decreases in the axial direction of the motor away from the shaft seat.

[0018] In some examples of the present utility model, the fan assembly further includes: a circuit board module disposed at one end of the motor away from the guide assembly, and the circuit board module is electrically connected to the motor.

[0019] In some examples of the present utility model, the fan assembly further includes: an end cap installed at one end of the motor away from the guide assembly, an installation cavity is formed between the end cap and the motor, and the circuit board module is installed in the installation cavity.

[0020] The cleaning device according to the second aspect of the present utility model includes: the fan assembly according to any one of the above first aspect embodiments.

[0021] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0023] Figure 1 is a schematic structural diagram of a fan assembly according to an embodiment of the present utility model;

[0024] Figure 2 is an exploded view of a fan assembly according to an embodiment of the present utility model;

[0025] Figure 3 is a cross-sectional view of a fan assembly according to an embodiment of the present utility model;

[0026] Figure 4 is a schematic structural diagram of a housing according to an embodiment of the present utility model;

[0027] Figure 5 is a schematic structural diagram of a guide shell according to an embodiment of the present utility model;

[0028] Figure 6 is another schematic structural diagram of a guide shell according to an embodiment of the present utility model;

[0029] Figure 7 is a schematic structural view of a fairing according to an embodiment of the present utility model;

[0030] Figure 8 is a schematic structural view of a cooling fan according to an embodiment of the present utility model.

[0031] Reference numerals:

[0032] 100, fan assembly;

[0033] 1, motor; 11, motor shaft; 12, housing; 121, heat dissipation holes; 122, mounting platform; 123, heat dissipation outlet; 124, positioning posts; 13, bearing; 131, upper bearing; 132, lower bearing;

[0034] 2, flow guiding assembly; 21, flow guiding shell; 211, shaft hole; 212, positioning hole; 213, base; 2131, seat plate; 2132, outer ring plate; 2133, avoidance groove; 214, fairing; 2141, flow guiding inlet; 2142, flow guiding outlet; 22, impeller; 23, heat dissipation space;

[0035] 3, cooling fan; 31, shaft seat; 32, blades; 4, circuit board module; 5, end cover; 51, mounting cavity. Detailed implementation manners

[0036] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the drawings are exemplary.

[0037] Next, refer to Figures 1 - 8 to describe the fan assembly 100 according to an embodiment of the present utility model. It can discharge the hot air in the heat dissipation space 23 through the rotational movement of the cooling fan 3, and can also prevent the water or water vapor that has passed through the shaft hole 211 from entering the motor 1 again, thereby avoiding the risk of the motor 1 being flooded.

[0038] Combined with Figures 1 - 8 As shown, the fan assembly 100 according to the first aspect embodiment of the present utility model includes a motor 1, a flow guiding assembly 2, and a cooling fan 3. Among them, the motor 1 can convert electrical energy into mechanical energy to generate a driving torque, thereby acting as a power source; the flow guiding assembly 2 can play the effect of guiding the airflow direction; the cooling fan 3 is mainly used to dissipate heat from the motor 1 to prevent the motor 1 from overheating, thereby ensuring the stable operation of the motor 1 and extending the service life of the motor 1.

[0039] Specifically, the motor 1 includes a motor shaft 11. The flow guiding assembly 2 includes a flow guiding shell 21 and an impeller 22. The impeller 22 is disposed in the flow guiding shell 21. The flow guiding shell 21 is installed on the motor 1. Moreover, a heat dissipation space 23 is formed between the flow guiding shell 21 and the motor 1. The flow guiding shell 21 is provided with a shaft hole 211. The motor shaft 11 passes through the shaft hole 211. Moreover, the motor shaft 11 is connected to the impeller 22. The heat dissipation fan 3 is disposed in the heat dissipation space 23. Moreover, the heat dissipation fan 3 is connected to the motor shaft 11. Along the axial direction of the motor shaft 11, the heat dissipation fan 3, the shaft hole 211, and the impeller 22 are arranged in sequence.

[0040] Specifically, the motor shaft 11 is in driving connection with the impeller 22 and the heat dissipation fan 3. The motor shaft 11 can transmit the driving torque to the impeller 22 and the heat dissipation fan 3, so as to enable the impeller 22 and the heat dissipation fan 3 to achieve the effect of normal rotation. A heat dissipation space 23 is formed between the flow guiding shell 21 and the motor 1. The heat dissipation fan 3 is disposed in the heat dissipation space 23. When the motor shaft 11 drives the heat dissipation fan 3 to rotate, the rotation of the blades 32 of the heat dissipation fan 3 will cut the air and accelerate the air flow in the heat dissipation space 23. The accelerated air flows over the surface of the heat source (such as the heat generating components of the motor 1), and takes away the heat of the heat source through convection. Moreover, the accelerated air flow can increase the contact area and speed between the heat source and the surrounding environment, thereby improving the heat exchange efficiency, and further improving the heat dissipation effect of the motor 1.

[0041] Further, when the motor shaft 11 drives the impeller 22 to rotate, a negative pressure will be generated during the rotation of the impeller 22, which will suck in water or water vapor. Most of the water or water vapor will be thrown out through the side holes on the outer side of the flow guiding assembly 2. However, a small amount of water or water vapor rebounds after hitting the side wall of the flow guiding assembly 2 and enters the waterproof gap between the impeller 22 and the flow guiding shell 21 (such as the gap formed between the motor shaft 11 and other parts after assembly and the shaft hole 211). Thus, after the water or water vapor passes through the waterproof gap, due to the high-speed operation of the heat dissipation fan 3, the water or water vapor entering the flow guiding shell 21 can be continuously discharged, thereby avoiding the risk of water ingress into the motor 1, and further improving the waterproof property of the motor 1.

[0042] Therefore, by providing the fan assembly 100, on the one hand, the heat dissipation fan 3 can discharge the hot air in the heat dissipation space 23 through rotational movement, and on the other hand, it can prevent the water or water vapor that has passed through the shaft hole 211 from entering the motor 1 again, thereby avoiding the risk of water ingress into the motor 1, and further improving the safety and practicality of the motor 1.

[0043] According to some alternative embodiments of the present invention, in combination with Figures 1 - 3 As shown, the motor 1 includes a motor housing 12 and a bearing 13. The bearing 13 is disposed in the motor housing 12. The motor shaft 11 passes through the bearing 13. Moreover, the motor shaft 11 extends out of the motor housing 12. Along the axial direction of the motor shaft 11, the heat dissipation fan 3 is located between the bearing 13 and the shaft hole 211.

[0044] Specifically, the housing 12 can provide structural protection for the motor 1, preventing foreign objects from interfering with and colliding with the motor 1; the bearing 13 can be used to support the motor shaft 11, ensuring that the motor shaft 11 can rotate smoothly, and also ensuring the relative position and rotational accuracy of the motor shaft 11, thereby ensuring the operating stability and accuracy of the motor shaft 11, and further improving the working reliability of the motor shaft 11. Among them, the bearing 13 sequentially includes an upper bearing 131 and a lower bearing 132 in the up-down direction.

[0045] In addition, the motor shaft 11 extends out of the housing 12, which is convenient for establishing a transmission cooperation relationship between the motor shaft 11 and the cooling fan 3 and the impeller 22 outside the housing 12. Moreover, the cooling fan 3 is axially located between the upper bearing 131 and the shaft hole 211 along the motor shaft 11. In this way, a small amount of water or water vapor flowing into the guide shell 21 through the shaft hole 211 can be blocked again (that is, the water or water vapor is thrown out of the cooling space 23 by the high-speed rotating cooling fan 3), thereby avoiding the risk of abnormal noise and failure caused by water ingress into the upper bearing 131, and further improving the waterproof performance and working reliability of the motor 1.

[0046] Specifically, in combination with Figures 1 - 3 As shown, the end face of the housing 12 facing the cooling fan 3 is provided with cooling holes 121, so that the air flow in the motor 1 flows through the cooling holes 121 to the cooling fan 3. Such an arrangement can enable the cooling holes 121 to provide an exchange and flow channel for the air between the cooling fan 3 and the motor 1, thereby facilitating the formation of a heat exchange effect of air convection between the hot air generated by the motor 1 inside the housing 12 and the air in the cooling space 23 through the cooling holes 121, and thus improving the cooling effect at the motor 1.

[0047] Furthermore, in combination with Figures 1 - 3 As shown, there are multiple cooling holes 121, and the multiple cooling holes 121 are arranged at intervals along the circumferential direction of the housing 12. Such an arrangement can increase the number of cooling holes 121, thereby increasing the air flow rate and the contact area of air heat transfer, and further improving the cooling efficiency of the motor 1; among them, the multiple cooling holes 121 are arranged at intervals along the circumferential direction of the housing 12, which can improve the cooling uniformity of the motor 1, avoid the problem of local uneven cooling, and thus ensure the normal and stable operation of the motor 1.

[0048] Specifically, in combination with Figures 1 - 4 As shown, the end face of the housing 12 is provided with a plurality of mounting platforms 122 protruding towards the guide shell 21. The plurality of mounting platforms 122 are respectively installed on the guide shell 21 through fasteners, and a cooling outlet 123 communicating the cooling space 23 and the external environment is formed between adjacent mounting platforms 122.

[0049] It can be understood that the fastener can sequentially pass through the flow guide shell 21 and the mounting table 122 on the end face of the housing 12 to connect and fix the housing 12 and the flow guide shell 21 into a whole, thereby increasing their respective weights and spatial modes, and further improving the structural strength and bending and torsion stiffness of the two.

[0050] Among them, the multiple mounting tables 122 on the end face of the housing 12 protrude towards the side of the flow guide shell 21. In this way, the axial space size defined between the flow guide shell 21 and the housing 12 can also be increased, facilitating the arrangement of the accommodation of the cooling fan 3. In addition, a heat dissipation outlet 123 communicating the heat dissipation space 23 and the external environment is formed between adjacent mounting tables 122, that is, the gap formed between adjacent mounting tables 122 can cooperate with the flow guide shell 21 to define the heat dissipation space 23 and the heat dissipation outlet 123 of the external environment, thereby realizing the air heat exchange effect between the heat dissipation space 23 and the external environment, and further improving the heat dissipation efficiency of the motor 1.

[0051] Furthermore, as shown in Figure 2 、 Figure 4 and Figure 5 , one of a positioning post 124 and a positioning hole 212 is provided on the end face of the housing 12, and the other of the positioning post 124 and the positioning hole 212 is provided on the flow guide shell 21. The positioning post 124 and the positioning hole 212 cooperate with each other to position in the circumferential direction of the housing 12.

[0052] For example, the end face of the housing 12 is provided with a positioning post 124, and the flow guide shell 21 is provided with a positioning hole 212. The positioning post 124 on the housing 12 and the positioning hole 212 on the flow guide shell 21 are positioned and matched with each other, so that the circumferential relative position between the housing 12 and the flow guide shell 21 can be restricted, thereby ensuring the position stability and assembly accuracy between the two.

[0053] According to some optional embodiments of the present invention, as shown in Figure 2 、 Figures 5 - 7 , the flow guide shell 21 includes a base 213 and a flow guide cover 214. The base 213 is provided with a shaft hole 211. The base 213 is installed on the motor 1, and a heat dissipation space 23 is formed between the base 213 and the motor 1. The flow guide cover 214 is arranged on the base 213. The flow guide cover 214 is formed with a flow guide inlet 2141 and a flow guide outlet 2142 for sending the air flow at the flow guide inlet 2141 to the flow guide outlet 2142.

[0054] Among them, the base 213 can play a role in protecting the motor 1, and the motor shaft 11 can pass through the shaft hole 211 on the base 213 to smoothly establish a transmission cooperation relationship with the impeller 22 outside the base 213. Moreover, a heat exchange space for dissipating heat from the motor 1 (that is, the heat dissipation space 23 and the air flow in the external environment perform convective heat exchange) is formed between the base 213 and the motor 1.

[0055] In addition, the fairing 214 is disposed on one side of the base 213 away from the motor 1. The impeller 22 can suck air through the air inlet 2141 on the fairing 214 to generate negative pressure, so as to achieve the effect of smoothly collecting dirt on the cleaning surface. Then, the impeller 22 discharges the gas from the air outlet 2142 on the outer peripheral side of the fairing 214, so as to achieve the effect of cyclic air suction, and further ensure that the fan assembly 100 can continuously generate negative pressure suction.

[0056] Specifically, as shown in Figure 2 and Figures 5 - 7 , the base 213 includes a seat plate 2131 and an outer ring plate 2132. The seat plate 2131 is connected to the motor 1 through fasteners. The seat plate 2131 is formed with a shaft hole 211. The outer ring plate 2132 is connected to the outer peripheral edge of the seat plate 2131. The outer ring plate 2132 covers the outer periphery of the motor 1, and the outer ring plate 2132 is spaced from the motor 1. The fairing 214 is connected to the outer ring plate 2132.

[0057] That is to say, the outer ring plate 2132 is circumferentially connected to the outer peripheral edge of the seat plate 2131. The outer ring plate 2132 can provide a certain degree of protection for the motor 1 in the circumferential direction. The shaft hole 211 is formed in the seat plate 2131 along the axial direction of the motor shaft 11, which is convenient for the motor shaft 11 to pass through the shaft hole 211 smoothly and establish a transmission cooperation relationship with the impeller 22. Moreover, the seat plate 2131 is in a plate-like structure, which can provide a more stable installation and fixing position for the fasteners, so as to facilitate the fasteners to pass through the seat plate 2131 and the housing 12 to connect the base 213 and the motor 1 into a firm and stable whole.

[0058] Wherein, the outer ring plate 2132 covers the outer periphery of the motor 1, and the outer ring plate 2132 is circumferentially spaced from the motor 1. On the one hand, this can provide further protection for the motor 1. On the other hand, it can also form an annular gap between the outer ring plate 2132 and the housing 12 in the circumferential direction, so as to achieve the effect of allowing the air in the heat dissipation space 23 and the air outside the outer ring plate 2132 to convect and exchange heat smoothly, and further improve the rationality of its layout.

[0059] Furthermore, as shown in Figure 2 and Figure 7 , the air inlet 2141 and the impeller 22 are axially opposite to each other along the motor shaft 11. There are multiple air outlets 2142. The multiple air outlets 2142 are arranged around the impeller 22. Such an arrangement can facilitate the impeller 22 to suck air from the center. The sucked air continues to flow outward along the curvature of the blade 32. Since the edge of the blade 32 rotates faster than the center, the air is accelerated and ejected outward under the action of centrifugal force, and finally discharged from the multiple air outlets 2142 on the fairing 214, so as to smoothly achieve the effect of continuous cyclic suction of gas, and further ensure a stable negative pressure effect.

[0060] Specifically, in combination with Figure 2 and Figure 8 as shown, the cooling fan 3 includes a shaft seat 31 and a plurality of blades 32. The motor shaft 11 passes through the shaft seat 31, and the blades 32 are arranged on the shaft seat 31 and are spaced circumferentially along the shaft seat 31.

[0061] It can be understood that a plurality of blades 32 are spaced circumferentially on the shaft seat 31, the motor shaft 11 passes through the center of the shaft seat 31, the shaft seat 31 can provide structural support and installation positions for the blades 32, and the shaft seat 31 can also establish a transmission cooperation relationship with the motor shaft 11, so as to facilitate achieving the effect that the motor 1 drives the blades 32 to rotate.

[0062] For example, when the blades 32 of the cooling fan 3 (a disc with curved blades 32 as shown in the figure) rotate, air is inhaled near the center of the blades 32 and then flows outward along the curved surface of the blades 32. Since the edge of the blades 32 rotates faster than the center, the air is accelerated and ejected outward under the action of centrifugal force and is finally discharged radially (perpendicular to the direction of the motor shaft 11), so as to smoothly achieve the effect of quickly discharging the hot air in the heat dissipation space 23.

[0063] Among them, the seat plate 2131 is provided with an avoidance groove 2133 for avoiding the shaft seat 31, and a shaft hole 211 is provided at the bottom of the avoidance groove 2133. Such an arrangement can enable the seat plate 2131 to form an avoidance space for avoiding the shaft seat 31, so that without additionally occupying the axial dimension in the heat dissipation space 23, it can also avoid structural interference between the shaft seat 31 and the seat plate 2131, thereby improving the rationality and compactness of the space arrangement.

[0064] Furthermore, in combination with Figure 2 , Figure 3 and Figure 5 as shown, the cross-sectional area of the bottom of the avoidance groove 2133 decreases in the axial direction of the motor 1 away from the shaft seat 31. It can be understood that the avoidance groove 2133 forms an annular inclined surface inclined toward the motor 1 side in the direction away from the shaft hole 211. When a small amount of water or water vapor hits the side wall of the flow guide cover 214 and rebounds and flows toward the shaft hole 211, due to the arrangement of the inclined surface, the water or water vapor can flow to a position away from the motor 1 along the guidance of the inclined surface, and the water or water vapor needs to do more work against gravity to flow into the heat dissipation space 23 through the clearance of the shaft hole 211, thereby reducing the probability of water entering the heat dissipation space 23 and further improving the waterproofness of the motor 1.

[0065] In some alternative embodiments according to the present invention, in combination with Figure 3As shown, the fan assembly 100 further includes a circuit board module 4, which is disposed at an end of the motor 1 away from the flow guiding assembly 2, and the circuit board module 4 is electrically connected to the motor 1.

[0066] Among them, the circuit board module 4 (i.e., Printed Circuit Board Assembly Module, printed circuit board assembly module) refers to a printed circuit board assembly that has been assembled. It installs and solders various electronic components, such as resistors, capacitors, transistors, integrated circuit chips, microcontrollers, connectors, etc. on the printed circuit board (PCB) by means of surface mount technology (SMT) or through-hole technology (THT), etc., to form an electronic module or subsystem with specific functions.

[0067] In addition, the circuit board module 4 can precisely connect various electronic components such as resistors, capacitors, transistors, integrated circuits, etc. through the conductive lines on the printed circuit board to form a complete circuit system. These circuit systems can perform various electronic functions such as signal processing, power management, and data transmission; and can also be flexibly customized according to different functional requirements to meet diverse functional usage needs.

[0068] Specifically, as shown in Figure 3 As shown, the fan assembly 100 further includes an end cover 5, which is installed at an end of the motor 1 away from the flow guiding assembly 2. An installation cavity 51 is formed between the end cover 5 and the motor 1, and the circuit board module 4 is installed in the installation cavity 51.

[0069] It can be understood that the end cover 5 can cooperate with the housing 12 to provide an all-round protection effect for the motor 1. An installation cavity 51 for installing the circuit board module 4 is formed between the end cover 5 and the motor 1, thereby improving the rationality of its spatial layout.

[0070] The cleaning device according to the second aspect embodiment of the present invention includes the fan assembly 100 of the above embodiment. Thus, the cleaning device with this fan assembly 100 can improve the waterproofness and heat dissipation ability of the fan assembly 100 without increasing the power consumption of the motor 1, thereby enhancing the market competitiveness of the cleaning device. For example, the cleaning device can be a floor sweeper, a floor washer, etc., and is not limited thereto.

[0071] In the description of the present utility model, 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", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 utility model.

[0072] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0073] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means 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 the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0074] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

[0075] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means 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 the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0076] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A fan assembly, characterized in that, Comprising: A motor, the motor including a motor shaft; A flow guiding assembly, the flow guiding assembly including a flow guiding housing and an impeller, the impeller being disposed in the flow guiding housing, the flow guiding housing being mounted on the motor and forming a heat dissipation space with the motor, the flow guiding housing being provided with a shaft hole, the motor shaft passing through the shaft hole and being connected to the impeller; A heat dissipation fan, the heat dissipation fan being disposed in the heat dissipation space and connected to the motor shaft, along the axial direction of the motor shaft, the heat dissipation fan, the shaft hole and the impeller are arranged in sequence.

2. The fan assembly according to claim 1, characterized in that, The motor includes: A housing; A bearing, the bearing being disposed in the housing, the motor shaft passing through the bearing and extending outside the housing, along the axial direction of the motor shaft, the heat dissipation fan is located between the bearing and the shaft hole.

3. The fan assembly according to claim 2, characterized in that, The end face of the housing facing the heat dissipation fan is provided with heat dissipation holes, so that the air flow in the motor flows to the heat dissipation fan through the heat dissipation holes.

4. The fan assembly according to claim 3, wherein The heat dissipation holes are multiple, and the multiple heat dissipation holes are arranged at intervals along the circumferential direction of the housing.

5. The fan assembly according to claim 2, wherein The end face of the housing is provided with a plurality of mounting platforms protruding towards the flow guiding housing, and the plurality of mounting platforms are respectively mounted on the flow guiding housing through fasteners, and a heat dissipation outlet communicating the heat dissipation space and the external environment is formed between adjacent mounting platforms.

6. The fan assembly according to claim 5, wherein, One of a positioning post and a positioning hole is provided on the end face of the housing, and the other of the positioning post and the positioning hole is provided on the flow guiding housing, and the positioning post and the positioning hole cooperate with each other to perform circumferential positioning on the housing.

7. The fan assembly according to claim 1, wherein The flow guiding housing includes: A base, the base being provided with the shaft hole, the base being mounted on the motor and forming the heat dissipation space with the motor; A flow guiding cover, the flow guiding cover being disposed on the base, the flow guiding cover being formed with a flow guiding inlet and a flow guiding outlet for sending the air flow at the flow guiding inlet to the flow guiding outlet.

8. The fan assembly according to claim 7, wherein The base includes: A seat plate, the seat plate being connected to the motor through fasteners, the seat plate being formed with the shaft hole; An outer ring plate, the outer ring plate being connected to the outer peripheral edge of the seat plate, the outer ring plate covering the outer periphery of the motor and being spaced from the motor, and the flow guiding cover being connected to the outer ring plate.

9. The fan assembly according to claim 7, wherein, The flow guiding inlet is axially opposite to the impeller along the motor shaft, and the flow guiding outlets are multiple, and the multiple flow guiding outlets are arranged around the impeller.

10. The fan assembly according to claim 8, characterized in that, The heat dissipation fan includes: A shaft seat, the motor shaft passing through the shaft seat; A plurality of blades, the plurality of blades being disposed on the shaft seat and arranged at intervals along the circumferential direction of the shaft seat; Wherein, the seat plate is provided with an avoidance groove for avoiding the shaft seat, and the shaft hole is provided at the bottom of the avoidance groove.

11. The fan assembly according to claim 10, characterized in that, The cross-sectional area of the bottom of the avoidance groove decreases in the axial direction of the motor away from the shaft seat.

12. The fan assembly according to claim 1, characterized in that, Further comprising: A circuit board module, the circuit board module being disposed at one end of the motor away from the flow guiding assembly, and the circuit board module being electrically connected to the motor.

13. The fan assembly according to claim 12, wherein, Further comprising: An end cover, the end cover being mounted at one end of the motor away from the flow guiding assembly, the end cover and the motor forming an installation cavity, and the circuit board module being mounted in the installation cavity.

14. A cleaning device, characterized in that, Comprising: The fan assembly according to any one of claims 1-13.

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