Air collecting member, motor assembly, and cleaning device having separation and filtering functions

Abstract

The present application relates to an air collecting member, a motor assembly, and a cleaning device having separation and filtering functions. The air collecting member is used for being mounted on a motor, the motor comprises an impeller assembly and a stator assembly which are arranged in the axial direction of the motor, and the axial end of the impeller assembly close to the stator assembly is provided with an air outlet. The air collecting member comprises: an inner cover, used for being sleeved on the outer side of the stator assembly and connected to the impeller assembly, wherein the inner cover is provided with a first through hole used for being communicated with the air outlet; and an outer cover, provided on the side of the inner cover facing away from the stator assembly and connected to the inner cover, wherein a cavity is defined between the outer cover and the inner cover, a second through hole used for being communicated with the external environment is formed in the side wall of the outer cover facing away from the inner cover in the radial direction of the motor, and both the first through hole and the second through hole are communicated with the cavity. A part of airflow flowing out of the air outlet can flow into a space between the inner cover and the stator assembly, a part can flow into the cavity by means of the first through hole, and the airflow in the cavity can be discharged to the external environment by means of the second through hole. The wind collecting member can well reduce the noise generated when the airflow flows out of the motor.

Description

Air collecting parts, motor components and cleaning equipment with separation and filtration functions Technical Field

[0001] The present application relates to the field of motor technology, and in particular to an air collecting member, a motor assembly, and a cleaning device with separation and filtering functions. Background Art

[0002] With the continuous development of science and technology, cleaning equipment such as mite removers, vacuum cleaners, and floor scrubbers have entered thousands of households. Such cleaning equipment not only has a high cleaning efficiency, but also saves manpower, bringing great convenience to people's lives. Usually, a motor is provided in such equipment to provide suction force. When the equipment is working, the clean airflow filtered by the filter is drawn into the motor, and finally discharged to the external environment from the air outlet provided on the impeller assembly of the motor. In the related art, an air collecting piece is usually provided at the air outlet of the impeller assembly to guide the airflow out of the air outlet and reduce the noise generated when the airflow flows out of the motor. However, in the related art, the noise reduction effect of such air collecting pieces is not good, and the noise when the airflow flows out of the motor is still relatively large.

[0003] Utility Model Content

[0004] Based on this, it is necessary to provide an air collecting member, a motor assembly and a cleaning device with separation and filtering functions, which can better reduce the noise when the air flows out of the motor.

[0005] A wind collecting member is used to be installed on a motor, wherein the motor includes an impeller assembly and a stator assembly arranged along the motor's axial direction, and the impeller assembly is provided with an air outlet near the axial end of the stator assembly. The wind collecting member includes:

[0006] an inner cover, configured to be sleeved on the outside of the stator assembly and connected to the impeller assembly, the inner cover having a first through hole, the first through hole being configured to communicate with the air outlet; and

[0007] an outer cover, disposed on a side of the inner cover facing away from the stator assembly and connected to the inner cover, a cavity being formed between the outer cover and the inner cover, a second through hole for communicating with the external environment being provided on a side wall of the outer cover facing away from the inner cover in a radial direction of the motor, the first through hole and the second through hole both being connected to the cavity;

[0008] Part of the airflow flowing out of the air outlet can flow between the inner cover and the stator assembly, and part can flow into the cavity through the first through hole. The airflow in the cavity can be discharged to the external environment through the second through hole.

[0009] In one embodiment, the air collecting member includes a guide plate, which is located in the cavity to separate the cavity into a first flow channel and a second flow channel that are respectively arranged on both sides of the guide plate and are connected to each other, the second through hole is connected to the second flow channel, and the first through hole is connected to the first flow channel.

[0010] In one embodiment, the first through hole is located on one end of the inner cover close to the air outlet along the axial direction of the motor, and the second flow channel is located outside the first flow channel along the radial direction of the motor, and the two are connected at one end of the motor away from the first through hole along the axial direction of the motor.

[0011] In one embodiment, one end of the guide plate is connected to the outer cover, and the other end extends to the cavity, and at least a portion of the guide plate protrudes inwardly along the radial direction of the motor.

[0012] In one embodiment, the projection of the second through hole in the radial direction of the motor at least partially falls on the guide plate.

[0013] In one embodiment, a storage space for accommodating the stator assembly is constructed on the inner side of the inner cover, and a third through hole connected to the first flow channel and the storage space is provided on the inner cover. The airflow of the first flow channel can flow into the storage space through the third through hole, and the airflow of the second flow channel can be discharged to the external environment through the second through hole.

[0014] In one embodiment, the inner cover includes a first end wall and a first side wall extending along the axial direction of the motor, the first end wall is used to connect to the impeller assembly along the radial outer side of the motor, the first end wall is connected to the first side wall along the radial inner side of the motor, the end of the first side wall facing away from the first end wall and the first end wall are respectively connected to the outer cover along the radial outer side of the motor, the first through hole passes through the first end wall, and the third through hole passes through the first side wall.

[0015] In one embodiment, the outer cover includes a second side wall arranged opposite to the first side wall, and a second end wall arranged opposite to the first end wall, one end of the second side wall is connected to the first end wall along the radial outer side of the motor, and the other end is connected to the second end wall, an end of the second end wall facing away from the second side wall is connected to an end of the first side wall facing away from the first end wall, the second through hole passes through the second side wall, and the guide plate extends from the second side wall toward the cavity.

[0016] In one embodiment, the first end wall extends obliquely from the first side wall toward a direction away from the second end wall.

[0017] In one embodiment, the inner cover and the outer cover are fixed by snap connection.

[0018] A motor assembly comprises the above-mentioned air collecting member and the motor.

[0019] In one embodiment, the impeller assembly includes a movable impeller and a stator impeller arranged along the axial direction of the motor, the movable impeller is connected to the rotor shaft of the motor, and the air outlet is provided at the end of the stator impeller away from the movable impeller.

[0020] In one embodiment, the motor includes a rotor assembly and a stator assembly, wherein the stator assembly is sleeved on the outside of the rotor assembly, and the stator assembly can drive the rotor assembly to rotate around the axial direction of the motor when energized.

[0021] In one embodiment, bearings are provided at opposite ends of the rotor shaft, and the bearings include angular contact bearings.

[0022] In one embodiment, a bearing chamber is formed in the center of the stator impeller, and the corresponding bearing member is disposed in the bearing chamber.

[0023] In one embodiment, the bearing member has a first end and a second end opposite to each other along the axis of the motor, the first end of the bearing member faces the impeller and abuts against the inner wall of the bearing chamber, and a limiting locking spring member abuts against the second end of the bearing member is provided on the rotor shaft.

[0024] A cleaning device with separation and filtration functions comprises the above-mentioned motor assembly, and the motor assembly is used to provide suction force.

[0025] In one embodiment, the cleaning device with separation and filtration function is a mite remover, a vacuum cleaner, a floor scrubber or a sweeping robot.

[0026] The above-mentioned air collecting member, motor assembly and cleaning equipment with separation and filtration functions, the air collecting member is used to be installed on the motor, and the air collecting member includes an inner cover and an outer cover, and a cavity is constructed between the two. The inner cover has a first through hole connected to the air outlet and the cavity, so that the axial airflow flowing out from the air outlet at the axial end of the impeller assembly can flow into the cavity through the first through hole. The outer cover is provided with a second through hole connected to the cavity and the outside world on the side wall of the motor radially away from the inner cover, so that the airflow in the cavity can be discharged outward along the radial direction of the motor to the external environment through the second through hole. During the flow of air, since it passes through the first through hole and the second through hole in sequence, the through holes at the two locations can guide the airflow twice, so that the airflow with a more turbulent flow direction is straightened, thereby being discharged more smoothly, reducing the noise caused by the turbulent flow of the air. In addition, since the airflow needs to flow into the cavity through the first through hole first and then be discharged from the second through hole, the setting of the cavity extends the airflow path, thereby slowing down the airflow velocity, which is also conducive to reducing noise. In addition, the air outlet of the motor is arranged at the axial end of the impeller assembly, and the direction of the air flow flowing out of the air outlet is roughly along the axial direction of the motor. After the axial air flow flows into the cavity through the first through hole, when it is discharged from the second through hole, since the second through hole is arranged on the side wall of the outer cover away from the inner cover along the radial direction of the motor, the direction of the air flow discharged from the second through hole will be changed to the radial direction of the motor. Through this change in the direction of the air flow, the air flow velocity can also be slowed down, thereby reducing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a schematic structural diagram of a motor assembly in one embodiment of the present application.

[0028] FIG2 is a schematic structural diagram of a motor in an embodiment of the present application.

[0029] FIG3 is a cross-sectional view of a motor assembly according to an embodiment of the present application.

[0030] FIG4 is a schematic structural diagram of an air collecting member in an embodiment of the present application.

[0031] FIG5 is a schematic structural diagram of an inner cover in one embodiment of the present application.

[0032] FIG6 is a schematic structural diagram of an outer cover in an embodiment of the present application.

[0033] FIG7 is a cross-sectional view of an air collecting member in one embodiment of the present application.

[0034] Figure markings: 100, motor; 110, stator assembly; 120, impeller assembly; 121, moving impeller; 122, stator impeller; 1221, air outlet; 123, impeller cover; 130, rotor assembly; 131, rotor shaft; 132, bearing member; 20, air collecting member; 200, inner cover; 210, first end wall; 211, first through hole; 220, first side wall; 221, third through hole; 230, accommodating space; 300, outer cover; 310, second end wall; 320, second side wall; 321, second through hole; 400, cavity; 410, first flow channel; 420, second flow channel; 500, guide plate. DETAILED DESCRIPTION

[0035] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0036] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0037] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0038] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0039] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0040] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0041] Referring to Figures 1 to 3, an air collecting member 20 provided in an embodiment of the present application is used to be installed on a motor 100. The motor 100 includes an impeller assembly 120 and a stator assembly 110 arranged along its own axial direction. The impeller assembly 120 is provided with an air outlet 1221 at the axial end near the stator assembly 110. Referring to Figures 3, 4 and 7, an air collecting member 20 provided in an embodiment of the present application includes an inner cover 200 and an outer cover 300. The inner cover 200 is used to be mounted on the outside of the stator assembly 110 and connected to the impeller assembly 120. Referring to Figure 5 at the same time, the inner cover 200 has a first through hole 211, and the first through hole 211 is used to communicate with the air outlet 1221. 6 and 7 , the outer cover 300 is disposed on a side of the inner cover 200 facing away from the stator assembly 110 and is connected to the inner cover 200. A cavity 400 is defined between the outer cover 300 and the inner cover 200. A second through hole 321 for communicating with the external environment is provided on the side wall of the outer cover 300 facing away from the inner cover 200 in the radial direction of the motor 100. Both the first through hole 211 and the second through hole 321 are connected to the cavity 400. Referring to FIG3 and FIG7 , part of the airflow flowing out of the air outlet 1221 can flow between the inner cover 200 and the stator assembly 110, and part can flow into the cavity 400 through the first through hole 211. The airflow within the cavity 400 can be discharged to the external environment through the second through hole 321.

[0042] The above-mentioned air collecting member 20, motor assembly and cleaning equipment with separation and filtration functions, the air collecting member 20 is used to be installed on the motor 100, the air collecting member 20 includes an inner cover 200 and an outer cover 300, and a cavity 400 is constructed between the two. The inner cover 200 has a first through hole 211 that is connected to the air outlet 1221 and the cavity 400. Therefore, the axial airflow flowing out from the air outlet 1221 at the axial end of the impeller assembly 120 can flow into the cavity 400 through the first through hole 211. The outer cover 300 is provided with a second through hole 321 that is connected to the cavity 400 and the outside world on the side wall of the motor 100 radially away from the inner cover 200. Therefore, the airflow in the cavity 400 can be discharged outward to the outside environment through the second through hole 321 along the radial direction of the motor 100. During airflow, since it passes through first through-hole 211 and second through-hole 321 in sequence, these two through-holes can guide the airflow twice, smoothing out any turbulent airflow, allowing it to be discharged more smoothly and reducing noise caused by turbulent airflow. Furthermore, since the airflow must first flow into cavity 400 through first through-hole 211 and then be discharged through second through-hole 321, the provision of cavity 400 extends the airflow path, thereby slowing the airflow velocity and also helping to reduce noise. In addition, the air outlet 1221 of the motor 100 is arranged at the axial end of the impeller assembly 120, and the direction of the air flow flowing out of the air outlet 1221 is roughly along the axial direction of the motor 100. After the axial air flow flows into the cavity 400 through the first through hole 211, when it is discharged from the second through hole 321, since the second through hole 321 is arranged on the side wall of the outer cover 300 away from the inner cover 200 along the radial direction of the motor 100, the direction of the air flow discharged from the second through hole 321 will be changed to the radial direction of the motor 100. Through this change in the direction of the air flow, the air flow velocity can also be slowed down, thereby reducing the noise.

[0043] From the perspective of Figure 3 , the vertical direction is the axial direction of the motor, the horizontal direction is the radial direction of the motor, the air outlet 1221 is provided at the bottom end of the impeller assembly 120, and the air collecting member 20 is installed below the impeller assembly 120. Subsequent embodiments will be described with the aid of the perspective of the accompanying drawings, but it should be noted that these only represent relative positions, not absolute positions.

[0044] 4 and 5 , in some embodiments, a plurality of second through holes 321 are defined on a sidewall of the outer cover 300 facing away from the inner cover 200 in the radial direction of the motor 100 .

[0045] In this embodiment, by providing multiple second through holes 321, the airflow discharged from the cavity 400 to the external environment can be better guided, thereby further reducing noise. It is worth noting that the total hollow area of ​​the multiple second through holes 321 is greater than the hollow area of ​​the first through holes 211, allowing airflow to be discharged smoothly from the first through holes 211 through the second through holes 321 to the external environment.

[0046] Preferably, the plurality of second through holes 321 are evenly spaced along the circumference and axial directions of the outer cover 300, so that the airflow in each area of ​​the cavity 400 can be discharged more evenly from each area of ​​the outer cover 300, thereby making the airflow velocity at each location more uniform and moderate, thereby reducing noise to a greater extent.

[0047] 4 and 6 , in some embodiments, a plurality of first through holes 211 are defined in the inner cover 200 .

[0048] In this embodiment, by providing a plurality of first through holes 211 , the airflow flowing into the cavity 400 can be better guided, thereby reducing noise to a greater extent.

[0049] Preferably, the plurality of first through holes 211 are evenly spaced along the circumference of the inner cover 200 so that the airflow discharged from the air outlet 1221 can flow into the cavity 400 more evenly from various areas of the inner cover 200, thereby making the airflow velocity in various places in the cavity 400 more uniform and moderate, thereby reducing noise to a greater extent.

[0050] 4 to 6 , in some embodiments, a plurality of second through holes 321 are defined on a sidewall of the outer cover 300 facing away from the inner cover 200 in the radial direction of the motor 100 , and a plurality of first through holes 211 are defined on the inner cover 200 .

[0051] Referring to Figures 4 to 6 , in some embodiments, the first through-hole 211 can be any shape, such as a circular hole, an elliptical hole, a square hole, or a polygonal hole, and the second through-hole 321 is similar. In this embodiment, the first through-hole 211 and the second through-hole 321 are regular hexagonal shapes, and the arrangement of the plurality of first through-holes 211 and second through-holes 321 is honeycomb-shaped. This design not only increases the hollow area for airflow while maintaining the same area, but also forms a rib structure on each side of the hexagon, which can fully enhance the structural strength of the inner cover 200 and the outer cover 300.

[0052] Referring to Figures 4 to 7, in some embodiments, the air collecting member 20 includes a guide plate 500, which is located in the cavity 400 to separate the cavity 400 into a first flow channel 410 and a second flow channel 420 that are located on both sides of the guide plate 500 and are connected to each other, the second through hole 321 is connected to the second flow channel 420, and the first through hole 211 is connected to the first flow channel 410.

[0053] Specifically, the first through hole 211 is connected to the first flow channel 410. Therefore, the airflow from the air outlet 1221 will flow into the first flow channel 410 through the first through hole 211, and then into the second flow channel 420 connected to the first flow channel 410, and then be discharged to the outside environment through the second through hole 321 connected to the second flow channel 420. By providing the deflector 500 to divide the cavity 400, the flow path of the airflow within the cavity 400 can be further extended, so that the airflow flowing into the first flow channel 410 will not immediately flow into the second flow channel 420, thereby slowing the airflow velocity and facilitating greater noise reduction.

[0054] Referring to Figures 4 to 7, further, in some embodiments, the first through hole 211 is located on the inner cover 200 at one end close to the air outlet 1221 along the axial direction of the motor 100, and along the radial direction of the motor 100, the second flow channel 420 is located on the outside of the first flow channel 410, and the two are connected at one end away from the first through hole 211 along the axial direction of the motor 100.

[0055] Specifically, from the perspective of the accompanying drawings, the first through-hole 211 is located at the top of the inner cover 200, and the bottom ends of the second flow channel 420 and the first flow channel 410 are connected. The first through-hole 211 extends along the axial direction of the motor 100, so that the airflow from the first through-hole 211 into the first flow channel 410 is initially directed downward. When it flows within the first flow channel 410 to the point where the second flow channel 420 and the first flow channel 410 are connected at their bottom ends, it can turn and flow into the second flow channel 420, and then be discharged to the external environment through the second through-hole 321. It is worth noting that the second through-hole 321 extends along the radial direction of the motor 100, and the airflow turns from axial inflow to radial outflow.

[0056] It is also worth noting that the projection of the second through hole 321 in the radial direction of the motor 100 at least partially falls on the guide plate 500. In summary, the airflow first flows downward along the axial direction of the motor 100 in the cavity 400, and then turns and flows outward along the radial direction of the motor 100. By changing the direction of the airflow, the airflow velocity can be better slowed down and the noise can be further reduced. After the airflow flows into the lowermost end of the first flow channel 410, due to the limitation of the outer cover 300, it will generate a countercurrent upward and outward flow trend to enter the second flow channel 420. The separation of the guide plate 500 can block the airflow surging in the second flow channel 420 toward the first flow channel 410, and inhibit the airflow in the second flow channel 420 from flowing back to the first flow channel 410 to cause the airflow direction to be turbulent, thereby reducing the noise to a greater extent.

[0057] In other embodiments, the guide plate 500 can also be set in other orientations, so that the second flow channel 420 and the first flow channel 410 are arranged along the axial direction of the motor 100. For example, the first through hole 211 is located on the inner cover 200 at one end along the axial direction of the motor 100, close to the air outlet 1221, and the second flow channel 420 is located at the end of the first flow channel 410 along the axial direction of the motor 100, away from the first through hole 211, and the second flow channel 420 and the first flow channel 410 are connected along the radial inner side of the motor 100. That is, from the perspective of the figure, the second flow channel 420 is located below and outside the first flow channel 410, and the inner sides of the two are connected. The airflow flows downward from the first through hole 211 into the first flow channel 410, turns when it hits the guide plate 500, flows toward the inner side of the first flow channel 410 and downward, is blocked by the inner end surface of the lower end of the outer cover 300, and then flows into the second flow channel 420 from the connection between the second flow channel 420 and the first flow channel 410, then flows outward along the radial direction of the motor in the second flow channel 420, and is finally discharged from the second through hole 321.

[0058] 6 and 7 , in some embodiments, one end of the guide plate 500 is connected to the outer cover 300 and the other end extends to the cavity 400 . At least a portion of the guide plate 500 protrudes inwardly along the radial direction of the motor 100 .

[0059] Specifically, the guide plate 500 extends from the inner wall of the housing 300 along the axial and radial inner sides of the motor 100 to extend into the cavity 400. A portion of the upper portion of the guide plate 500 protrudes radially inward from the motor 100, so that the airflow flowing from the first through hole 211 into the first flow channel 410 is guided inward and gathered as it flows downward, and then redirected to flow into the second flow channel 420. This shape of the guide plate 500 further extends the flow path of the airflow within the first flow channel 410, thereby slowing the airflow velocity and significantly reducing noise.

[0060] More specifically, the deflector 500 extends in a curved direction, meaning that the deflector 500 is a curved surface. This allows airflow to flow more smoothly across the surface of the deflector 500, helping to reduce airflow turbulence and, in turn, noise. Of course, in other embodiments, the deflector 500 may also be configured with a sharp angle.

[0061] In other embodiments, the guide plate 500 may also be connected to the inner cover 200 and extend from the inner cover 200 into the cavity 400 .

[0062] In the aforementioned embodiment of "the second flow channel 420 is located at one end of the first flow channel 410 axially away from the first through hole 211 along the motor 100, and the second flow channel 420 and the first flow channel 410 are connected along the radial inner side of the motor 100", the specific arrangement of the guide plate 500 can be to extend radially inward from the inner wall of the outer cover 300 along the motor 100.

[0063] 6 and 7 , in some embodiments, an accommodating space 230 for accommodating the stator assembly 110 is constructed on the inner side of the inner cover 200, and a third through hole 221 is provided on the inner cover 200, which is connected to the first flow channel 410 and the accommodating space 230. The airflow of the first flow channel 410 can flow into the accommodating space 230 through the third through hole 221, and the airflow of the second flow channel 420 can be discharged to the external environment through the second through hole 321.

[0064] Specifically, the inner cover 200 is generally hollow and cylindrical, forming a receiving space 230 therein, allowing the inner cover 200 to be mounted outside the stator assembly 110. A gap exists between the outer side of the stator assembly 110 and the wall of the receiving space 230. Part of the airflow from the air outlet 1221 flows into this gap, passes through the stator assembly 110, the rotor assembly 130, and components such as the motor's circuit board, and is then discharged to the outside environment, thereby dissipating heat from these components within the motor 100 and preventing them from overheating. Another part of the air flow out of the air outlet 1221 flows into the first flow channel 410 through the first through hole 211, and then splits into two paths, one path flows into the second flow channel 420, and then is discharged to the external environment from the second through hole 321; the other path flows into the accommodating space 230 through the third through hole 221, that is, flows into the gap between the outside of the stator assembly 110 and the cavity wall of the accommodating space 230, flows through the stator assembly 110, the rotor assembly 130 and the circuit board of the motor and other components, and is then discharged to the external environment, thereby providing additional heat dissipation for the various components in the motor 100.

[0065] In the embodiment of the present application, the provision of the outer cover 300 forms a semi-enclosed cavity 400 with the inner cover 200 (semi-enclosed refers to a closed shape in which the cavity 400 is connected end to end, but can be connected to other spaces through the various through-holes provided in the inner cover 200 and the outer cover 300). This can extend the airflow path, reverse the airflow, and guide the airflow through the dual through-holes, thereby reducing noise and providing a certain degree of protection for the stator assembly 110. However, this also results in a reduction in the exposed area of ​​the various components of the motor 100, thereby reducing heat dissipation efficiency. In the above embodiment, by providing the third through-hole 221 in the inner cover 200 that connects to the accommodating space 230 and the first flow channel 410, supplementary heat dissipation can be provided to the various components within the motor 100 (i.e., together with the airflow that previously flowed directly from the air outlet 1221 into the accommodating space 230 to dissipate heat from the various components within the motor 100), thereby compensating for the reduced heat dissipation performance caused by the provision of the outer cover 300, thereby achieving a better heat dissipation effect while reducing noise.

[0066] In some embodiments, a plurality of third through holes 221 are provided on the inner cover 200 to further improve the heat dissipation efficiency of the components in the motor 100 .

[0067] In some embodiments, the third through-holes 221 may be any shape, such as a circular hole, an elliptical hole, a square hole, or a polygonal hole. In this embodiment, the third through-holes 221 also adopt a regular hexagonal shape, and multiple third through-holes 221 are arranged in a honeycomb shape. This design can, on the one hand, better increase the hollow area for airflow while maintaining the same area, and on the other hand, the rib structure formed by each side of the hexagon can also fully enhance the structural strength of the inner cover 200.

[0068] It can be understood that in the aforementioned embodiment, "at least a portion of the guide plate 500 protrudes inward along the radial direction of the motor 100" can not only extend the flow path of the airflow in the first flow channel 410, but also guide the airflow flowing into the first flow channel 410 inward, so that it flows into the accommodating space 230 through the third through hole 221 as smoothly as possible, thereby achieving a better heat dissipation effect on the motor 100.

[0069] 4 to 7 , in some embodiments, the inner cover 200 includes a first end wall 210 and a first side wall 220 extending along the axial direction of the motor 100. The first end wall 210 is used to connect to the impeller assembly 120 along the radial outer side of the motor 100. The first end wall 210 is connected to the first side wall 220 along the radial inner side of the motor 100. An end of the first side wall 220 facing away from the first end wall 210 and the first end wall 210 are respectively connected to the outer cover 300 along the radial outer side of the motor 100. The first through hole 211 passes through the first end wall 210, and the third through hole 221 passes through the first side wall 220.

[0070] Specifically, from the perspective of the drawings, the outer top end of the first end wall 210 is used to connect to the impeller assembly 120, and the outer bottom end of the first end wall 210 is connected to the top end of the outer cover 300. The inner side of the first end wall 210 is connected to the top end of the first side wall 220, and the bottom end of the first side wall 220 is connected to the outer cover 300.

[0071] In some embodiments, the first through hole 211 passes through the first end wall 210 along the axial direction of the motor 100. Alternatively, the extending direction of the first through hole 211 may also form a certain angle with the axial direction of the motor 100.

[0072] In some embodiments, the third through hole 221 passes through the first side wall 220 in the radial direction of the motor 100. Alternatively, the extending direction of the third through hole 221 may also have a certain angle with the radial direction of the motor 100, wherein the angle is 0-10 degrees.

[0073] 4 to 7 , in some embodiments, the housing 300 includes a second sidewall 320 disposed opposite the first sidewall 220 and a second end wall 310 disposed opposite the first end wall 210. One end of the second sidewall 320 is connected to the radially outer side of the first end wall 210 of the motor 100, and the other end is connected to the second end wall 310. The end of the second end wall 310 facing away from the second sidewall 320 is connected to the end of the first sidewall 220 facing away from the first end wall 210. A second through hole 321 passes through the second sidewall 320, and the deflector 500 extends from the second sidewall 320 toward the cavity 400. The second end wall 310 blocks downwardly flowing airflow, thereby redirecting the airflow.

[0074] Specifically, the second end wall 310 extends radially along the motor 100, and the second side wall 320 extends axially along the motor 100. That is, the second side wall 320 is parallel to the first side wall 220 and is located radially outward of the first side wall 220 in the motor 100. From the perspective of the accompanying drawings, the top of the second side wall 320 is connected to the outside of the first end wall 210, the bottom of the second side wall 320 is connected to the outside of the second end wall 310, and the inside of the second end wall 310 is connected to the bottom of the first side wall 220. The first side wall 220, the second end wall 310, the second side wall 320, and the first end wall 210 are all annular and are connected end to end to enclose the cavity 400.

[0075] In some embodiments, the guide plate 500 extends from the second sidewall 320 toward the cavity 400 , and the guide plate 500 and the second sidewall 320 are integrally formed as a whole.

[0076] In some embodiments, the second through hole 321 passes through the second side wall 320 in the radial direction of the motor 100. Alternatively, the extension direction of the second through hole 321 may also form a certain angle with the radial direction of the motor 100.

[0077] Part of the airflow flowing out of the air outlet 1221 flows into the inner side of the first side wall 220, passes through the stator assembly 110, the rotor assembly 130, and the motor's circuit board and other components, before being discharged to the outside environment. Another part of the airflow flowing out of the air outlet 1221 flows into the first flow channel 410 through the first through hole 211 provided on the first end wall 210. After hitting the second end wall 310, it splits into two paths. One path turns outward and flows into the second flow channel 420, and then is discharged to the outside environment through the second through hole 321 provided on the second side wall 320. The other path turns inward and flows into the accommodation space 230 through the third through hole 221 provided on the first side wall 220, passes through the stator assembly 110, the rotor assembly 130, and the motor's circuit board and other components, before being discharged to the outside environment.

[0078] 4 to 7 , in some embodiments, at least a portion of the first end wall 210 extends obliquely from the first side wall 220 toward a direction away from the second end wall 310 .

[0079] Specifically, from the perspective shown in the accompanying drawings, the inner side of the first end wall 210 is lower than the outer side. The first end wall 210 first extends upward from the first side wall 220 in an inclined manner, and then extends upward to connect with the impeller assembly 120. Alternatively, the first end wall 210 can also be configured to extend upward from the first side wall 220 as a whole. In the above embodiment, by configuring at least a portion of the first end wall 210 in an inclined shape, the airflow flowing out of the air outlet 1221 can be guided so that it converges inward as much as possible, thereby reaching the inner area of ​​the first flow channel 410 as smoothly as possible, and thus flowing into the accommodating space 230 as much as possible, thereby achieving better heat dissipation for the motor 100.

[0080] In other embodiments, the first end wall 210 may also be disposed to extend along the radial direction of the motor 100 .

[0081] 4 to 7 , in some embodiments, the inner cover 200 and the outer cover 300 are fixed by snapping. The two can adopt any snap-fit ​​structure in the prior art, which will not be described in detail here.

[0082] 1 to 3 , in some embodiments, the motor assembly includes the air collecting member 20 in any one of the aforementioned embodiments, and further includes a motor 100 .

[0083] Specifically, the motor 100 includes a stator assembly 110, an impeller assembly 120, a rotor assembly 130, and a circuit board. The rotor assembly 130 includes a rotor shaft 131. The stator assembly 110 is sleeved onto the rotor assembly 130. When energized, the stator assembly 110 drives the rotor assembly 130 to rotate axially around the motor 100, converting electrical energy into mechanical energy to provide suction.

[0084] Bearings 132 are provided at opposite ends of the rotor shaft 131. Specifically, two bearings 132 are provided on opposite sides of the stator assembly 110. In this embodiment, the bearings 132 are angular contact bearings, which can better adapt to axial and radial forces and play a better role in rotational connection. The central portion of the above-mentioned stator impeller 122 is formed with a bearing chamber extending in the axial direction, and the corresponding bearing 132 is provided in the bearing chamber. It is worth noting that the bearing 132 here has a first end and a second end, i.e., an upper end and a lower end, which are opposite to each other along the axis direction of the motor 100. The upper end of the bearing 132 faces the impeller 121 and abuts against the inner wall of the bearing chamber. The rotor shaft 131 is provided with a limit lock spring abutting against the second end of the bearing 132. The above-mentioned arrangement is intended to effectively reduce the axial movement of the rotor shaft 131 during the operation of the motor 100.

[0085] 1 to 3 , in some embodiments, the impeller assembly 120 includes a moving impeller 121 and a stator 122 arranged along the axial direction of the motor 100 . The moving impeller 121 is connected to the rotor shaft 131 of the motor 100 , and an air outlet 1221 is provided at the end of the stator 122 facing away from the moving impeller 121 .

[0086] Specifically, the impeller assembly 120 also includes an impeller cover 123 that covers the outside of the impeller 121 and the stator 122. An air inlet for air flow into the motor 100 is provided at the center of the impeller cover 123. From the perspective of the accompanying drawings, an air inlet for air flow into the motor 100 is provided at the top center of the impeller cover 123. The impeller 121 is sleeved and fixed to the outside of the rotor shaft 131, and the impeller 121 is rotatably connected to the impeller cover 123. The impeller 121 can rotate synchronously with the rotor shaft 131, so that air flow flows into the motor through the air inlet provided on the impeller cover 123. The stator 122 is located below the impeller 121 and is fixed to the impeller cover 123. An air outlet 1221 is provided at the bottom end of the stator 122. The stator assembly 110 and the air collecting member 20 are located below the stator 122. When the rotor shaft 131 rotates, the impeller 121 rotates synchronously therewith, so that the air flow is sucked in through the air inlet provided on the impeller cover 123, then flows downward in a spiral along the impeller 121, and continues to flow downward in a spiral along the stator impeller 122, and is discharged from the air outlet 1221. Part of the air flows into the accommodating space 230 inside the inner cover 200, and part of the air flows into the cavity 400 through the first through hole 211 provided on the inner cover 200.

[0087] In some embodiments, the air collecting member 20 is fixed by snapping together its inner cover 200 and the stator impeller 122 .

[0088] In some embodiments, a cleaning device with separation and filtration functions includes the motor assembly in any one of the above embodiments, and the motor assembly is used to provide suction force.

[0089] 3 and 7 , in some embodiments, the cleaning device with separation and filtration function is a mite remover, a vacuum cleaner, a floor scrubber, or a sweeping robot.

[0090] The motor assembly provides suction force, so that the air flow carries garbage, dust, etc. and is sucked into the dust collection box and other components. The garbage and large particles are filtered and remain in the dust collection box. The clean air flow flows in from the air inlet provided on the impeller cover 123 of the motor 100 and is discharged from the air outlet 1221 provided on the fixed impeller 122. Part of it flows into the accommodating space 230 on the inner side of the inner cover 200, and part of it flows into the cavity 400 through the first through hole 211 provided on the inner cover 200. Finally, these two parts of the air flow are discharged to the external environment.

[0091] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A wind collecting member (20) for installation on a motor (100), the motor (100) comprising an impeller assembly (120) and a stator assembly (110) arranged along its own axial direction, an air outlet (1221) being provided at an axial end of the impeller assembly (120) close to the stator assembly (110), characterized in that, The air collecting member (20) includes: An inner cover (200) for sleeving outside the stator assembly (110) and connecting to the impeller assembly (120). The inner cover (200) has a first through hole (211) for communicating with the air outlet (1221); and An outer cover (300) disposed on a side of the inner cover (200) away from the stator assembly (110) and connected to the inner cover (200). A cavity (400) is formed between the outer cover (300) and the inner cover (200). A second through hole (321) for communicating with the external environment is provided on a side wall of the outer cover (300) radially away from the inner cover (200) along the motor (100). Both the first through hole (211) and the second through hole (321) communicate with the cavity (400); Among the air flow flowing out of the air outlet (1221), part can flow into the space between the inner cover (200) and the stator assembly (110), and part can flow into the cavity (400) through the first through hole (211). The air flow in the cavity (400) can be discharged to the external environment through the second through hole (321).

2. The air collecting member (20) according to claim 1, characterized in that, The air collecting member (20) includes a deflector (500). The deflector (500) is located in the cavity (400) to divide the cavity (400) into a first flow channel (410) and a second flow channel (420) which are provided on both sides of the deflector (500) and communicate with each other. The second through hole (321) communicates with the second flow channel (420), and the first through hole (211) communicates with the first flow channel (410).

3. The air collecting member (20) according to claim 2, wherein, The first through hole (211) is located at one end of the inner cover (200) along the axial direction of the motor (100) close to the air outlet (1221). Radially along the motor (100), the second flow channel (420) is located outside the first flow channel (410), and the two communicate at one end along the axial direction of the motor (100) away from the first through hole (211).

4. The air collecting member (20) according to claim 3, characterized in that, One end of the deflector (500) is connected to the outer cover (300), and the other end extends into the cavity (400). At least a part of the deflector (500) protrudes inwards radially along the motor (100).

5. The assembly (20) according to claim 3, characterized in that, At least a part of the projection of the second through hole (321) along the radial direction of the motor (100) falls on the deflector (500).

6. The air collecting member (20) according to claim 3, characterized in that, An accommodation space (230) for accommodating the stator assembly (110) is formed inside the inner cover (200). A third through hole (221) communicating with the first flow channel (410) and the accommodation space (230) is provided on the inner cover (200). The air flow in the first flow channel (410) can flow into the accommodation space (230) through the third through hole (221), and the air flow in the second flow channel (420) can be discharged to the external environment through the second through hole (321).

7. The air collecting member (20) according to claim 6, wherein The inner cover (200) comprises a first end wall (210) and a first side wall (220) extending along the axial direction of the motor (100); the first end wall (210) is used for connecting with the impeller assembly (120) along the radial outer side of the motor (100); the first end wall (210) is connected to the first side wall (220) along the radial inner side of the motor (100); an end of the first side wall (220) facing away from the first end wall (210) and the first end wall (210) are respectively connected to the outer cover (300) along the radial outer side of the motor (100); the first through hole (211) passes through the first end wall (210); and the third through hole (221) passes through the first side wall (220).

8. The air collecting member (20) according to claim 7, characterized in that, The outer cover (300) comprises a second side wall (320) arranged opposite to the first side wall (220), and a second end wall (310) arranged opposite to the first end wall (210), one end of the second side wall (320) is connected to the first end wall (210) along the radial outer side of the motor (100), and the other end is connected to the second end wall (310), one end of the second end wall (310) facing away from the second side wall (320) is connected to one end of the first side wall (220) facing away from the first end wall (210), the second through hole (321) passes through the second side wall (320), and the guide plate (500) extends from the second side wall (320) toward the cavity (400).

9. The air collecting member (20) according to claim 8, wherein At least a portion of the first end wall (210) extends obliquely from the first side wall (220) in a direction away from the second end wall (310).

10. The air collecting member (20) according to any one of claims 1 to 9, characterized in that, The inner cover (200) and the outer cover (300) are snap-connected and fixed.

11. A motor assembly, characterized in that, The motor assembly comprises the air collecting member (20) according to any one of claims 1 to 10, and further comprises the motor (100).

12. The motor assembly according to claim 11, wherein, The impeller assembly (120) comprises a movable impeller (121) and a fixed impeller (122) arranged along the axial direction of the motor (100); the movable impeller (121) is connected to the rotor shaft (131) of the motor (100); and the air outlet (1221) is provided at the end of the fixed impeller (122) facing away from the movable impeller (121).

13. The motor assembly according to claim 12, characterized in that, The motor (100) comprises a rotor assembly (130) and a stator assembly (110); the stator assembly (100) is sleeved on the outside of the rotor assembly (130); and the stator assembly (110) can drive the rotor assembly (130) to rotate around the axial direction of the motor (100) when powered on.

14. The motor assembly according to claim 12, characterized in that, Bearing components (132) are provided at opposite ends of the rotor shaft (131), and the bearing components (132) include angular contact bearings.

15. The motor assembly according to claim 14, characterized in that, A bearing chamber is formed at the center of the stator wheel (122), and the corresponding bearing member (132) is arranged in the bearing chamber.

16. The motor assembly according to claim 15, characterized in that, The bearing member (132) has opposite first and second ends along the axis of the motor (100). The first end of the bearing member (132) faces the impeller (121) and abuts against the inner sidewall of the bearing chamber. A limiting lock spring member is provided on the rotor shaft (131) and abuts against the second end of the bearing member (132).

17. A cleaning device with a separation and filtration function, characterized in that, The cleaning device with a separation and filtration function includes the motor assembly according to any one of claims 11 to 16, and the motor assembly is used to provide suction force.

18. The cleaning device with a separation and filtration function according to claim 17, characterized in that, The cleaning device with a separation and filtration function is a mite remover, a vacuum cleaner, a floor washer or a sweeping robot.

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