Motor, motor assembly and cleaning equipment

Abstract

The utility model provides a motor, a motor assembly and cleaning equipment, and belongs to the technical field of motors. The motor comprises a main body, a movable impeller, a fixed impeller and a wind scooper, wherein the main body comprises a driving shaft; the movable impeller is arranged at one end of the driving shaft which is used for driving the movable impeller to rotate. The fixed impeller comprises an impeller body and a plurality of blades distributed in the circumferential direction of the impeller body at intervals, an air channel is formed between every two adjacent blades, the impeller body is arranged on the main body, and first through holes are formed in the blades. A first containing cavity is defined by the wind scooper, the wind scooper comprises a first air inlet and a first air outlet which are communicated with the first containing cavity, the movable impeller is arranged in the first containing cavity, the wind scooper is connected with the fixed impeller, the fixed impeller is located at the end, provided with the first air outlet, of the wind scooper, and the air channel and the first through hole are both communicated with the first containing cavity. According to the motor provided by the invention, the air duct and the first through hole are formed in the fixed impeller, so that the motor has a noise reduction function, and miniaturization development of cleaning equipment applying the motor is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular to a motor, a motor component and a cleaning device. Background Art

[0002] In recent years, with the improvement of people's living standards, home cleaning has gradually entered the era of automation and intelligence. The cleaning equipment that has emerged, such as sweeping robots, floor scrubbers, vacuum cleaners, etc., can liberate people from home cleaning work, effectively reduce people's workload in home cleaning, and alleviate people's fatigue during home cleaning.

[0003] Usually, sweeping robots, floor scrubbers, vacuum cleaners, etc. all use motors as power sources to generate suction airflow, and use the suction airflow to clean dust, liquid, mites, etc. on the ground, bed surface, etc. In the related art, the application document with publication number CN116317315A discloses that the cleaning device includes a motor assembly, and the motor assembly includes a motor cover, a silencer cover, a motor, and a partition; wherein the silencer cover is arranged inside the motor cover, and the outer wall of the silencer cover and the inner wall of the motor cover enclose a first chamber, and the first chamber is configured to extend along the axial direction of the silencer cover. An air inlet duct is provided inside the motor, and the motor is at least partially arranged inside the silencer cover, and the outer wall of the motor and the inner wall of the silencer cover enclose a second chamber, and the second chamber is configured to extend along the axial direction of the motor. Explain the existing structure for noise reduction, for example, the silencer cover includes a multi-layer structure and is arranged outside the motor.

[0004] However, although this has a certain noise reduction effect, it will increase the size of the motor component, which is not conducive to the miniaturization of the cleaning equipment. Utility Model Content

[0005] The embodiments of the present application provide a motor, a motor assembly and a cleaning device. The motor itself has a noise reduction function, which is conducive to the miniaturization development of the cleaning device using the motor.

[0006] A first aspect of the present application provides a motor, comprising:

[0007] a main body, including a drive shaft;

[0008] A moving impeller is arranged at one end of the driving shaft, and the driving shaft is used to drive the moving impeller to rotate;

[0009] The fixed impeller comprises a wheel body and a plurality of blades spaced apart along the circumference of the wheel body, an air channel is formed between adjacent blades, the wheel body is arranged on the main body, and the blades are provided with a first through hole;

[0010] The wind guide hood encloses a first accommodating cavity, the wind guide hood includes a first air inlet and a first air outlet connected to the first accommodating cavity, the impeller is arranged in the first accommodating cavity, the wind guide hood is connected to the stator, and the stator is located at one end of the wind guide hood where the first air outlet is set, and the air duct and the first through hole are both connected to the first accommodating cavity.

[0011] The motor provided in the embodiment of the present application has a main body including a driving shaft, and a moving impeller is arranged at one end of the driving shaft, so that the driving shaft can provide power for the moving impeller. By setting an air scoop, and setting the moving impeller in the first accommodating chamber of the air scoop, a negative pressure can be formed in the first accommodating chamber after the moving impeller rotates, so that the airflow can enter the fixed impeller from the first air inlet through the moving impeller and then from the first air outlet, and then be discharged from the motor through the fixed impeller, thereby providing suction for the cleaning equipment and the like in which the motor is set. By setting a fixed impeller, a diversion effect can be played on the negative pressure formed in the air scoop, and by setting a plurality of blades spaced apart in the fixed impeller and forming an air duct between adjacent blades, the airflow inhaled from the first air inlet can be discharged after passing through the fixed impeller and the air duct in sequence, thereby forming a flowing airflow, that is, suction. By providing a first through hole on the stator, the airflow sucked in from the first air inlet can be discharged after passing through the stator and the first through hole in sequence. That is to say, a plurality of fluid channels can be formed between the first air inlet, the impeller, the air duct and / or the first through hole, so that the airflow disturbance between the first accommodating chamber and the stator can be increased, thereby reducing the noise generated by the airflow inside the motor. In addition, it should be further explained that in order to generate a larger negative pressure and ensure the suction efficiency of the entire motor, the impeller will not punch holes in the impeller blades at the expense of the motor efficiency. Therefore, by providing the first through hole on the stator to increase the airflow disturbance, the motor noise can be reduced without increasing the size of the motor. Compared with the related art of reducing noise by providing a silencer cover on the outside of the motor, this is more conducive to the miniaturization of the cleaning equipment.

[0012] In a possible implementation, the plurality of blades are spirally arranged on the outer side of the wheel body in the same direction. The orthographic projections of two adjacent blades on the stator impeller in the axial direction of the stator impeller do not overlap each other. The “same direction” is clockwise or counterclockwise.

[0013] By arranging multiple blades in a spiral, the airflow path can be extended, thereby increasing the turbulence effect and reducing airflow noise. By arranging the positive projections of two adjacent blades on the stator impeller in the axial direction of the stator impeller so as not to overlap each other, the air duct between the adjacent blades can be made wider, so that the airflow in the stator impeller can flow out through the air duct more conveniently, thereby ensuring that the suction force generated by the motor is greater.

[0014] In a possible implementation manner, orthographic projections of at least a portion of the first through holes on two adjacent blades in the axial direction of the first through holes do not overlap with each other.

[0015] By separating the orthographic projections of at least part of the first through holes on adjacent blades along the axial direction of the first through holes from each other, it is possible to prevent some of the first through holes from overlapping in the axial direction. In other words, the proportion of the first through holes in the axial direction can be increased, thereby making the density of the first through holes larger, which can increase the number of fluid channels, increase the turbulence effect, and enhance the noise reduction effect.

[0016] In a possible implementation, each blade includes at least one first through hole, wherein in the radial direction of the stator wheel, the density of the first through holes on the blade side away from the wheel body is greater than the density of the first through holes on the blade side close to the wheel body.

[0017] By setting the density of the first through holes on the side of the blade away from the wheel body to be greater than the density of the first through holes on the side of the blade close to the wheel body, more fluid channels can be formed on the outside of the blade. Since the distance from the outside of the blade to the central axis is larger, the length of the fluid channel can be extended to improve the noise reduction effect.

[0018] In a possible implementation manner, the density of the first through holes gradually increases from a side of the blade close to the wheel body to a side of the blade away from the wheel body.

[0019] In this way, the number of the first through holes in the radial direction of the stator impeller can change more evenly, which can improve the uniformity of the turbulence effect at different positions, thereby reducing the shaking of the motor and improving the stability of the motor.

[0020] In a possible implementation manner, the first through hole has a shape of a circle, a triangle, a quadrilateral, a polygon, a plum blossom, or a crescent.

[0021] By setting the shape of the first through hole to be circular, triangular, quadrilateral, polygonal, plum blossom or crescent, the turbulence effect can be improved and the design flexibility of the stator can be increased.

[0022] In a possible implementation, the stator wheel includes an extension wall. The extension wall encloses a second accommodating cavity, and the extension wall includes a second air inlet and a second air outlet communicated with the second accommodating cavity. The wheel body and the blades are both located in the second accommodating cavity. One end of the extension wall where the second air inlet is provided is connected to one end of the wind guide cover where the first air outlet is provided. One end of the extension wall where the second air outlet is provided extends along the axial direction of the stator wheel to the outside of the blade in a direction away from the wind guide cover.

[0023] By arranging an extension wall on the stator impeller, and arranging a second air inlet and a second air outlet that are connected at both ends of the extension wall, a fluid channel can be formed between the first air inlet and the second air outlet, thereby increasing the flow disturbance effect of the stator impeller and reducing the noise of the motor. By extending one end of the extension wall where the second air outlet is arranged along the axial direction of the stator impeller, in a direction away from the wind guide cover, to the outside of the blade, the length of the fluid channel from the first air inlet to the second air outlet can be further extended, thereby increasing the flow disturbance effect and thus increasing the noise reduction effect of the motor.

[0024] In a possible implementation manner, a second through hole communicating with the second accommodating cavity is provided on the extending wall.

[0025] By arranging a plurality of second through holes spaced apart on the extension wall, a fluid channel can be formed between the first air inlet, the impeller, the second accommodating chamber and the second through hole. In this way, the number of fluid channels between the first air inlet and the impeller can be increased, thereby improving the turbulence effect of the stator and the noise reduction effect of the motor.

[0026] In a possible implementation, the second through hole is located at an end of the extension wall away from the wind guide cover, and the second through hole is located on a portion of the extension wall extending to the outside of the blade.

[0027] By arranging the second through hole on the part of the extended wall extending to the outside of the blade, the length of the fluid channel between the first air inlet and the second through hole can be extended, thereby increasing the turbulence effect and improving the noise reduction effect of the motor.

[0028] In a possible implementation, a density of the second through holes at an end of the extension wall facing away from the air guide cover is greater than a density of the second through holes at an end of the extension wall facing the air guide cover.

[0029] In this way, there can be more second through holes located at the end of the extended wall away from the wind guide cover, thereby forming more fluid channels between the first air inlet and the end of the extended wall away from the wind guide cover, and the length of these fluid channels is longer, which can further enhance the spoiler effect and thus enhance the noise reduction effect.

[0030] In a possible implementation manner, in a direction from the second air inlet to the second air outlet, the density of the second through holes gradually increases.

[0031] In this way, the number of the second through holes in the radial direction of the stator impeller can change more evenly, which can improve the uniformity of the turbulence effect at different positions, thereby reducing the shaking of the motor and improving the stability of the motor.

[0032] In a possible implementation manner, the second through hole has a shape of a circle, a triangle, a quadrilateral, a polygon, a plum blossom, or a crescent.

[0033] By setting the shape of the second through hole to be circular, triangular, quadrilateral, polygonal, plum blossom or crescent, the turbulence effect can be improved and the design flexibility of the stator can be increased.

[0034] In a possible implementation, a mounting portion is provided at one end of the extension wall where the second air inlet is provided, and a matching portion is provided at one end of the air guide cover where the first air outlet is provided. The mounting portion is plug-matched with the matching portion.

[0035] By providing a mounting portion at one end of the extension wall where the second air inlet is provided so as to be connected to the air guide cover, the stability of the motor is improved. By plugging and matching the mounting portion with the matching portion, the difficulty of assembling the stator and the air guide cover can be reduced, thereby reducing the cost.

[0036] In a possible implementation, the invention further comprises a housing, wherein a third accommodating chamber is provided therein, and part of the main body is provided in the third accommodating chamber. The end of the drive shaft connected to the impeller extends outside the third accommodating chamber. In the axial direction of the drive shaft, the housing and the impeller are spaced apart, a part of the structure of the stator impeller is located between the housing and the impeller, and the stator impeller is connected to the housing.

[0037] By providing a housing and a third accommodating chamber in the housing, a mounting position can be provided for the motor body, and the motor body can be protected to a certain extent. By extending one end of the drive shaft connected to the impeller outside the third accommodating chamber, the drive shaft can be connected to the impeller, and by spacing the housing and the impeller to provide an accommodating space for the stator impeller, and by connecting the stator impeller to the housing, the stability of the stator impeller can be improved, thereby reducing the shaking of the stator impeller and reducing noise.

[0038] In a possible implementation manner, a gap is provided between the extending wall and the shell, so that the second accommodating cavity is in communication with the outside of the shell.

[0039] By setting a gap between the extension wall and the shell, the stator and the outside of the motor can be connected, so that a fluid channel is formed between the first air inlet and the second air outlet, so that the negative pressure generated by the impeller can be released, and then the motor can generate suction, so that the cleaning equipment using the motor has functions such as dust collection.

[0040] In a possible implementation, the outer side of the shell is provided with ridges spaced apart along the circumference of the shell, wherein the ridges are located at one end of the extension wall away from the air guide cover, and there is a gap between the extension wall and the ridges.

[0041] By providing a ridge from the housing to the second outer side and providing a gap between the extension wall and the ridge, the fluid channel of the airflow flowing out of the second air outlet of the extension wall can be extended, thereby increasing the turbulence effect and reducing noise. In addition, the ridge is provided on the outer side of the housing, which can also increase the structural strength of the housing, thereby extending the service life of the motor.

[0042] In a possible implementation, in a direction from the second air inlet to the second air outlet, a height of the ridge in a radial direction of the stator impeller gradually increases.

[0043] This can further increase the spoiler effect and thus improve the noise reduction effect.

[0044] In a possible implementation, the main body includes a coil, and the coil is located in the third accommodating chamber. The orthographic projection of the extension wall in the radial direction of the stator impeller at least partially overlaps with the orthographic projection of the coil in the radial direction of the stator impeller.

[0045] By making the extension wall's radial projection on the stator impeller overlap at least partially with the coil's radial projection on the stator impeller, the extension wall can cover a portion of the coil. When the airflow flows out from the second air outlet or the second through hole of the extension wall, part of the heat generated by the coil can be taken away, thereby cooling the motor and improving the heat dissipation efficiency of the motor.

[0046] In a possible implementation, a connecting piece is further included. The wheel body is provided with a plurality of first mounting holes. The housing is provided with an assembly hole that matches the first mounting holes. The connecting piece is used to fix the wheel body and the housing through the first mounting holes and the assembly holes.

[0047] By setting a connecting piece to connect the stator impeller and the housing, and by setting a first mounting hole and an assembly hole, a mounting position can be provided for the connecting piece to ensure the connection stability between the stator impeller and the housing, thereby reducing the shaking of the stator impeller and reducing noise.

[0048] In a possible implementation, the wheel body is an annular structure, wherein the annular structure includes a second mounting hole, the wheel body is sleeved on the outer side of the drive shaft through the second mounting hole, and a sealing structure is provided between the second mounting hole and the drive shaft.

[0049] By setting a second mounting hole so that the stator impeller and the drive shaft can be matched with each other, and by setting a sealing structure in the second mounting hole and the drive shaft, the airflow and moisture in the airflow can be prevented from entering the interior of the motor and affecting the operation of the motor.

[0050] In a possible implementation, the impeller includes a base plate, a guide plate, and a plurality of blades. In the axial direction of the drive shaft, the base plate and the guide plate are arranged opposite to each other, and the plurality of blades are located between the base plate and the guide plate, one end of the blade is connected to the base plate, and the other end of the blade is connected to the guide plate. The base plate is used to connect the impeller to the drive shaft, and an opening is formed at one end of the guide plate away from the base plate, and the opening is connected to the first air inlet.

[0051] By setting a substrate so as to connect the impeller to the drive shaft, the difficulty of assembling the impeller and the drive shaft is reduced. By connecting one end of the fan blade to the substrate and the other end of the fan blade to the guide plate, the stability of the fan blade can be improved, the fan blade can be prevented from loosening, and the noise can be reduced. The opening of the guide plate is connected to the first air inlet so that the impeller can inhale air from the first air inlet to form a negative pressure. By relatively arranging the substrate and the guide plate along the axial direction of the drive shaft, and arranging the fan blade between the substrate and the guide plate, when the impeller rotates, the airflow generated in the impeller can be gathered to the side of the fan blade away from the drive shaft and discharged, preventing the airflow from leaking at the substrate, thereby increasing the negative pressure strength of the impeller, and thereby increasing the suction force of the motor.

[0052] In a possible implementation, the plurality of blades are arranged at intervals along the circumferential spiral of the impeller. An air outlet channel is formed between two adjacent blades, the air outlet channel extends to a side of the blade away from the drive shaft, and an air outlet is formed on a side of the blade away from the drive shaft. The air outlet is communicated with the first accommodating cavity of the air guide cover.

[0053] By arranging a plurality of fan blades at intervals along the circumferential spiral of the drive shaft, and arranging the fan blades along the radial direction of the impeller, the length of the fan blades can be extended, thereby extending the length of the air outlet channel, and increasing the turbulence effect and reducing noise while inhaling air. By connecting the air outlet with the first accommodating chamber, the airflow formed by the rotation of the impeller can enter the first accommodating chamber, and then be discharged through the air duct and / or the first through hole connected to the first accommodating chamber, forming a negative pressure.

[0054] In a possible implementation, the fixed impeller and the movable impeller are coaxially arranged. The fixed impeller is located at an end of the movable impeller away from the first air inlet. The movable impeller is used to generate airflow when rotating, so that the airflow is discharged through the air outlet channel, part of the first accommodating cavity, the air duct and / or the first through hole, generating negative pressure.

[0055] By arranging the stator impeller and the movable impeller coaxially, the assembly space of the stator impeller and the movable impeller can be reduced, which is conducive to the miniaturization of the motor. By arranging the stator impeller at the end of the movable impeller away from the first air inlet, the length of the fluid channel from the airflow entering from the first air inlet to the air duct and / or the first through hole can be extended, the turbulence effect is increased, and the noise reduction effect is improved.

[0056] In a possible implementation, in the radial direction of the impeller, the distance from at least part of the guide plate to the drive shaft gradually decreases along the direction from the first air outlet to the first air inlet.

[0057] In this way, at least part of the structure of the guide plate can be a conical structure, and the end of the conical structure with a smaller size is close to the first air inlet. That is to say, the air flow can enter from a smaller opening and then flow out from a larger opening, which can increase the negative pressure formed in the impeller and thereby enhance the suction force of the motor.

[0058] In a possible implementation, a connecting portion is provided on the outer side of one of the air guide cover and the stator wheel, wherein a third through hole is provided on the connecting portion, and the third through hole is communicated with the outer side of the housing.

[0059] By setting a connecting part, the motor can be connected to a motor assembly or a cleaning device. By setting a third through hole on the connecting part, the airflow exhausted from the inside of the motor can be discharged again through the third through hole, and the noise of the airflow can be reduced again, thereby improving the noise reduction effect of the motor.

[0060] In a possible implementation manner, the connecting portion is provided on the air guide cover.

[0061] By arranging the connection part on the air guide cover, the structure of the stator impeller can be simplified and the difficulty of processing the stator impeller can be reduced.

[0062] The second aspect of the present application further provides a motor assembly, comprising a motor cover and any motor described in the first aspect, wherein the motor is arranged in the motor cover, and the air duct and the first through hole on the motor are both connected to the motor cover.

[0063] The motor assembly provided in the embodiment of the present application can reduce noise and improve user experience by providing the above-mentioned motor, and is conducive to the miniaturization of cleaning equipment.

[0064] The third aspect of the present application provides a cleaning device, comprising a body, a handle, and a motor as described in any one of the first aspects, wherein the handle is connected to the body, and the motor is disposed on the body.

[0065] The cleaning device provided in the embodiment of the present application can reduce noise and improve user experience by providing the above-mentioned motor, and is conducive to the miniaturization of the cleaning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0067] Figure 1 A schematic diagram of the structure of a motor provided in an embodiment of the present application;

[0068] Figure 2 A schematic diagram of a cross-sectional structure of a motor provided in an embodiment of the present application;

[0069] Figure 2A A schematic structural diagram of an air guide cover of a motor provided in an embodiment of the present application;

[0070] Figure 3 A schematic diagram of the structure of a stator impeller of a motor provided in an embodiment of the present application;

[0071] Figure 4 A schematic structural diagram of a stator impeller of a motor provided in an embodiment of the present application from another angle;

[0072] Figure 5 A schematic structural diagram of a stator impeller of a motor provided in an embodiment of the present application from another angle;

[0073] Figure 6 Another structural schematic diagram of a stator impeller of a motor provided in an embodiment of the present application;

[0074] Figure 7 A schematic diagram of the structure of a motor provided in an embodiment of the present application;

[0075] Figure 8 A schematic diagram of the structure of a moving impeller of a motor provided in an embodiment of the present application;

[0076] Fig. 9 A schematic cross-sectional structure diagram of a moving impeller of a motor provided in an embodiment of the present application;

[0077] Fig.10 A schematic diagram of a cross-sectional structure of a motor provided in an embodiment of the present application;

[0078] Fig.11 A schematic cross-sectional structure diagram of a motor assembly provided in an embodiment of the present application;

[0079] Fig.12 A schematic diagram of the structure of a cleaning device provided in an embodiment of the present application.

[0080] Description of reference numerals:

[0081] 100-motor; 10-main body; 11-driving shaft;

[0082] 12-coil; 20-air guide cover; 21-first accommodating chamber;

[0083] 22-matching portion; 23-first air inlet; 24-first air outlet;

[0084] 30-moving impeller; 31-base plate; 32-fan blade;

[0085] 33- deflector; 34- air outlet; 35- opening;

[0086] 40- fixed impeller; 41- wheel body; 42- blades;

[0087] 421-air duct; 422-first through hole; 43-extension wall;

[0088] 44-second accommodating chamber; 441-second air inlet; 442-second air outlet;

[0089] 45-second through hole; 46-mounting portion; 47-first mounting hole;

[0090] 48-second mounting hole; 50-housing; 51-convex ridge;

[0091] 52-third accommodating chamber; 60-connecting member; 70-connecting portion;

[0092] 71-third through hole; 80-fixing member; 90-sealing structure;

[0093] 200-motor assembly; 210-motor cover; 211-air inlet;

[0094] 212-air outlet;

[0095] 1000-cleaning device; 300-body; 400-handle. DETAILED DESCRIPTION

[0096] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0097] The motor, motor assembly and cleaning device provided in the embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0098] Figure 1 A schematic diagram of the structure of a motor provided in an embodiment of the present application. Figure 2 A schematic diagram of the cross-sectional structure of a motor provided in an embodiment of the present application.

[0099] It should be noted that, for the convenience of description, in the embodiment of the present application, the axial direction of the driving shaft 11 of the motor 100 is taken as the x direction.

[0100] The present application embodiment provides a motor 100, such as Figure 1 As shown, the motor 100 may include a housing 50, a main body 10, a moving impeller 30, a stator 40 and an air scoop 20. Part of the structure of the main body 10 is located in the housing 50, the moving impeller 30 is located in the air scoop 20, and the stator 40 is located between the air scoop 20 and the housing 50.

[0101] like Figure 2 As shown, the main body 10 may include a drive shaft 11. The housing 50 is disposed outside the main body 10, and one end of the drive shaft 11 extends outside the housing 50. The impeller 30 is disposed at one end of the drive shaft 11, and the drive shaft 11 is used to drive the impeller 30 to rotate. The fixed impeller 40 includes a wheel body 41 and a plurality of blades 42 distributed at intervals along the circumference of the wheel body 41, and an air duct 421 is formed between adjacent blades 42. The wheel body 41 is disposed on the main body 10, and a first through hole 422 is provided on the blade 42.

[0102] Exemplarily, the fixed impeller 40 and the movable impeller 30 are coaxially arranged. The fixed impeller 40 is located at one end of the movable impeller 30 away from the first air inlet 23. The movable impeller 30 is used to generate airflow when rotating, so that the airflow enters from the first air inlet 23, passes through the movable impeller 30, part of the first accommodating cavity 21, the air duct 421 and / or the first through hole 422, and is discharged to the outside of the housing 50, forming a negative pressure.

[0103] in, Figure 2 The dashed line with an arrow in the middle represents the direction of airflow. Figure 2As shown, part of the air flow can enter from the first air inlet 23 , pass through the impeller 30 , part of the first accommodating chamber 21 , and the air duct 421 and be discharged out of the housing.

[0104] By arranging the stator impeller 40 and the impeller 30 coaxially, the assembly space of the stator impeller 40 and the impeller 30 can be reduced, which is conducive to the miniaturization of the motor 100. By arranging the stator impeller 40 at the end of the impeller 30 away from the first air inlet 23, the length of the fluid channel from the airflow entering from the first air inlet 23 to the air duct 421 and / or the first through hole 422 can be extended, the turbulence effect is increased, and the noise reduction effect is improved.

[0105] like Figure 2A As shown, the air guide hood 20 surrounds a first accommodating chamber 21, and the air guide hood 20 may include a first air inlet 23 and a first air outlet 24 connected to the first accommodating chamber 21, the impeller 30 is arranged in the first accommodating chamber 21, the air guide hood 20 is connected to the stator 40, and the stator 40 is located at one end of the air guide hood 20 where the first air outlet 24 is set, and the air duct 421 and the first through hole 422 are both connected to the first accommodating chamber 21.

[0106] In this way, when the motor 100 is in working state, the rotation of the impeller 30 can form a negative pressure in the first accommodating chamber 21, and part of the airflow can enter through the first air inlet 23, enter the first accommodating chamber 21 through the impeller 30, and then pass through the air duct 421 between the blades 42 of the fixed impeller 40 to be discharged to the outside of the motor 100, and part of the airflow can enter through the first air inlet 23, enter the first accommodating chamber 21 through the impeller 30, and then pass through the first through hole 422 on the blades 42 of the fixed impeller 40 to be discharged to the outside of the motor 100, so that the motor 100 generates suction, so that the cleaning equipment using the motor 100 can have the function of dust collection. The motor 100 provided in the embodiment of the present application has a main body 10 provided with a drive shaft 11, and the impeller 30 is provided at one end of the drive shaft 11, so that the drive shaft 11 can provide power for the impeller 30.

[0107] By setting the air guide hood 20 and setting the impeller 30 in the first accommodating chamber 21 of the air guide hood 20, a negative pressure can be formed in the first accommodating chamber 21 after the impeller 30 rotates, so that the air flow can pass through the impeller 30 from the first air inlet 23 and then enter the stator 40 from the first air outlet 24, and then be discharged outside the housing 50 of the motor 100 through the stator 40, thereby providing suction for the cleaning equipment and the like in which the motor 100 is set.

[0108] By setting up the stator 40, a guide effect can be played on the negative pressure formed in the air guide cover 20. By setting a plurality of blades 42 at intervals in the stator 40 and forming an air duct 421 between adjacent blades 42, the air flow sucked in from the first air inlet 23 can be passed through the stator 40 and the air duct 421 in sequence and then discharged, thereby forming a flowing airflow, that is, suction.

[0109] By setting the first through hole 422 on the stator 40, the air flow sucked in from the first air inlet 23 can be discharged after passing through the stator 40 and the first through hole 422 in sequence. That is to say, a plurality of fluid channels can be formed between the first air inlet 23, the impeller 30, the air duct 421 and / or the first through hole 422. This can increase the air flow disturbance between the first accommodating cavity 21 and the stator 40, thereby reducing the noise generated by the air flow inside the motor 100.

[0110] In addition, by setting a first through hole 422 on the stator 40 to increase the airflow disturbance, the noise of the motor 100 can be reduced without increasing the volume of the motor 100. Compared with the related art of reducing noise by setting a silencer cover on the outside of the motor, the technical solution in the embodiment of the present application is more conducive to the miniaturization development of the cleaning equipment using the motor.

[0111] For example, Figure 3 As shown, a plurality of blades 42 are spirally arranged on the outer side of the wheel body 41 in the same direction. Here, "the same direction" refers to a clockwise or counterclockwise direction. Figure 4 As shown, the orthographic projections of two adjacent blades 42 on the stator impeller 40 in the axial direction of the stator impeller 40 do not overlap with each other.

[0112] It should be noted that the plurality of blades 42 may be spirally arranged on the outer side of the wheel body 41 in a clockwise direction or a counterclockwise direction. In the embodiment of the present application, the direction in which the blades 42 are spirally arranged is not further limited. In addition, the spiral angle of the blades 42 is not further limited.

[0113] By arranging the plurality of blades 42 in a spiral manner, the path of the airflow from the first air inlet 23 to the outside of the motor 100 can be extended, thereby increasing the turbulence effect and reducing the airflow noise. By arranging the orthographic projections of two adjacent blades 42 on the stator impeller 40 in the axial direction of the stator impeller 40 so as not to overlap each other, that is, the distance between adjacent blades 42 is large, the air duct 421 between adjacent blades 42 can be made wider, so that the airflow in the stator impeller 40 can flow out through the air duct 421 more conveniently, so as to ensure that the suction force generated by the motor 100 is large.

[0114] For example, see Figure 3As shown, the stator 40 may further include an extension wall 43. The extension wall 43 may be an annular wall structure, the extension wall 43 encloses a second accommodating chamber 44, and the extension wall 43 includes a second air inlet 441 and a second air outlet 442 communicated with the second accommodating chamber 44. The wheel body 41 and the blades 42 are both located in the second accommodating chamber 44. One end of the extension wall 43 where the second air inlet 441 is provided is connected to one end of the wind guide cover 20 where the first air outlet 24 is provided. One end of the extension wall 43 where the second air outlet 442 is provided extends along the axial direction (x direction) of the stator 40 to the outside of the blade 42 in a direction away from the wind guide cover 20.

[0115] By providing an extension wall 43 on the stator impeller 40, and providing a second air inlet 441 and a second air outlet 442 that are connected at both ends of the extension wall 43, a fluid channel can be formed between the first air inlet 23 and the second air outlet 442, thereby increasing the flow disturbance effect of the stator impeller 40 and reducing the noise of the motor 100. By extending one end of the extension wall 43 where the second air outlet 442 is provided along the axial direction of the stator impeller 40, in a direction away from the wind guide cover 20 to the outside of the blade 42, the length of the fluid channel from the first air inlet 23 to the second air outlet 442 can be further extended, thereby increasing the flow disturbance effect and thus increasing the noise reduction effect of the motor 100.

[0116] It should be noted that, in the embodiment of the present application, the size of the extension wall 43 in the x direction is not limited, as long as it can be spaced apart from the housing 50 .

[0117] Continue to see Figure 3 As shown, a mounting portion 46 is provided at one end of the extension wall 43 where the second air inlet 441 is provided. A matching portion 22 is provided at one end of the air duct 20 where the first air outlet 24 is provided. The mounting portion 46 is plugged and matched with the matching portion 22. Exemplarily, the mounting portion 46 is recessed inward relative to the outer side of the extension wall 43 so that the outer diameter of the mounting portion 46 is smaller than the outer diameter of the extension wall 43, so that the air duct 20 is plugged and matched with the mounting portion 46. Of course, in other embodiments, the mounting portion 46 can also be provided as a structure protruding outward, as long as the stator 40 and the air duct 20 can be matched and connected. In the embodiment of the present application, the structure of the mounting portion 46 is not further limited.

[0118] By providing a mounting portion 46 at one end of the extension wall 43 where the second air inlet 441 is provided, the stator impeller 40 is connected to the air duct 20, thereby improving the stability of the motor 100. By plugging and matching the mounting portion 46 and the matching portion 22, the assembly difficulty between the stator impeller 40 and the air duct 20 can be reduced, thereby reducing the cost.

[0119] In addition, the wheel body 41 is provided with a plurality of first mounting holes 47, and the first mounting holes 47 are used to fix the fixed impeller 40 to the housing 50 of the motor 100. The wheel body 41 is an annular structure, and a second mounting hole 48 is formed at the center of the wheel body 41, and the second mounting hole 48 is used for the drive shaft 11 to pass through, so that the drive shaft 11 can be connected to the impeller 30 located on the side of the fixed impeller 40 facing the wind guide cover 20.

[0120] It should be noted that the first mounting hole 47 and the second mounting hole 48 are both mounting holes for assembly and are not used as air flow channels.

[0121] The first mounting hole 47 is provided so as to fix the stator impeller 40 and the housing 50 of the motor 100. The stability of the stator impeller 40 is improved, the vibration of the stator impeller 40 is reduced, and the noise is reduced. The second mounting hole 48 is provided at the center of the wheel body 41 so as to separate the drive shaft 11 from the stator impeller 40, so that after the drive shaft 11 passes through the second mounting hole 48, it can rotate relative to the stator impeller 40, thereby driving the impeller 30 to rotate, so as to realize the function of the motor 100.

[0122] Continue to see Figure 2 As shown, the motor 100 may further include a connector 60. The wheel body 41 and the motor 100 are fixedly connected by the connector 60. Exemplarily, the housing 50 is provided with an assembly hole that matches the first mounting hole 47. The connector 60 passes through the first mounting hole 47 and the assembly hole, and fixedly connects the wheel body 41 and the housing 50. Exemplarily, a thread may be provided in the assembly hole, and the connector 60 may be a screw or a bolt. Of course, in other embodiments, the connector 60 may also be other structures. In the embodiment of the present application, the structure of the connector is not further limited. By providing the connector 60, so as to connect the stator 40 and the housing 50, by providing the first mounting hole 47 and the assembly hole, an installation position can be provided for the connector 60 to ensure the connection stability of the stator 40 and the housing 50, thereby reducing the shaking of the stator 40 and reducing noise.

[0123] Exemplarily, the number of the first mounting holes 47 can be three, and the three first mounting holes 47 are centrally symmetrically distributed around the central axis of the stator impeller 40. By centrally symmetrically distributing the three first mounting holes 47 around the central axis of the stator impeller 40, the force balance of the stator impeller 40 can be improved, thereby improving the stability of the stator impeller 40.

[0124] Of course, in other embodiments, the number of the first mounting holes 47 can also be two, four, five, six or more. In the embodiment of the present application, the number of the first mounting holes 47 is not further limited, as long as the multiple first mounting holes 47 are distributed in a central symmetrical manner around the central axis of the stator impeller 40.

[0125] Of course, in some embodiments, the first mounting hole 47 may not be provided, and the stator 40 and the housing 50 may be fixedly connected by other means, for example, by welding, bonding, integral molding, etc. In the embodiment of the present application, the connection method between the stator 40 and the housing 50 is not further limited.

[0126] In a possible implementation, a sealing structure 90 may be further provided between the second mounting hole 48 and the drive shaft 11. It should be noted that the airflow inevitably contains some moisture, so by providing the sealing structure 90 between the second mounting hole 48 and the drive shaft 11, the airflow and the moisture in the airflow can be prevented from entering the interior of the motor 100, damaging electronic devices such as circuit boards inside the main body 10, and further affecting the operation of the motor 100.

[0127] In one possible implementation, see Figure 3 As shown, the extension wall 43 is provided with a second through hole 45 communicating with the second accommodating chamber 44. The number of the second through holes 45 can be multiple, and a plurality of second through holes 45 arranged at intervals are provided on the extension wall 43, so that a fluid channel can also be formed between the first air inlet 23, the impeller 30, the second accommodating chamber 44 and the second through holes 45, so that the number of fluid channels between the first air inlet 23 and the impeller 30 can be increased, thereby improving the turbulence effect of the stator 40 and improving the noise reduction effect of the motor 100.

[0128] like Figure 2 As shown, part of the airflow can enter from the first air inlet 23, pass through the impeller 30, part of the first accommodating chamber 21, and the first through hole 422 to be discharged from the housing 50. Part of the airflow can enter from the first air inlet 23, pass through the impeller 30, part of the first accommodating chamber 21, the air duct 421, and the second through hole 45 to be discharged from the housing 50. Part of the airflow can enter from the first air inlet 23, pass through the impeller 30, part of the first accommodating chamber 21, the first through hole 422, and the second through hole 45 to be discharged from the housing 50, etc. In the embodiment of the present application, the fluid channel through which the airflow passes is not further limited.

[0129] Among them, the second through hole 45 is located at one end of the extension wall 43 away from the wind guide cover 20, and the second through hole 45 is located on the part of the extension wall 43 extending to the outside of the blade 42, that is, the second through hole 45 is arranged close to the outside of the extension wall 43. By arranging the second through hole 45 on the part of the extension wall 43 extending to the outside of the blade 42, the length of the fluid channel between the first air inlet 23 and the second through hole 45 can be extended, thereby increasing the turbulence effect and improving the noise reduction effect of the motor 100. In addition, since the second through hole 45 is arranged close to the outside of the extension wall, the part of the extension wall 43 connected to the wind guide cover 20 is not provided with the second through hole, that is, in this way, the structural strength of the part where the extension wall 43 is connected to the blade 42 and the wind guide cover 20 can be ensured to be relatively large, thereby improving the structural strength of the stator 40, ensuring the connection stability of the stator 40 and the wind guide cover 20, reducing the shaking and vibration of the stator 40, and thereby improving the noise reduction effect of the motor 100.

[0130] like Figure 5 As shown, at least some of the first through holes 422 on two adjacent blades 42 do not overlap each other in the axial direction of the first through holes 422. Exemplarily, all of the first through holes 422 on two adjacent blades 42 do not overlap each other in the axial direction of the first through holes 422, that is, the projections of the first through holes 422 in the axial direction are separately arranged.

[0131] By setting at least part of the first through holes 422 on adjacent blades 42 so that the orthographic projections of the first through holes 422 along the axial direction are separated from each other, it is possible to prevent part of the first through holes 422 from overlapping in the axial direction, because only one fluid channel can be formed between the two overlapping first through holes 422. If there are overlapping first through holes 422 on different blades 42 in the axial direction, the number of fluid channels will be reduced, thereby reducing the density of the fluid channels and the turbulence effect. Therefore, by setting the first through holes 422 on adjacent blades 42 so that they do not overlap in the axial direction, the proportion of the first through holes 422 in the axial direction can be increased, thereby making the density of the first through holes 422 larger, and increasing the number of fluid channels, increasing the turbulence effect, and improving the noise reduction effect. For example, Figure 6 As shown, each blade 42 includes at least one first through hole 422. Exemplarily, a plurality of first through holes 422 may be provided on each blade 42, and in the radial direction of the stator 40, the density of the first through holes 422 on the side of the blade 42 away from the wheel body 41 is greater than the density of the first through holes 422 on the side of the blade 42 close to the wheel body 41.

[0132] By setting the density of the first through holes 422 on the side of the blade 42 away from the wheel body 41 to be greater than the density of the first through holes 422 on the side of the blade 42 close to the wheel body 41, more fluid channels can be formed on the outside of the blade 42. Since the distance from the outside of the blade 42 to the central axis is large, the length of the fluid channel can be extended to improve the noise reduction effect.

[0133] For example, the density of the first through holes 422 gradually increases from the side of the blade 42 close to the wheel body 41 to the side of the blade 42 far from the wheel body 41. In this way, the number of the first through holes 422 in the radial direction of the stator impeller 40 can be changed more evenly, which can improve the uniformity of the turbulence effect at different positions, thereby reducing the shaking of the motor 100 and improving the stability of the motor 100.

[0134] Of course, in other embodiments, the plurality of first through holes 422 may be arranged on the blade 42 in an irregular manner, so that there are more first through holes 422 on the outer side of the blade 42, or the diameter of the first through holes 422 on the outer side is larger, and fewer first through holes 422 on the inner side of the blade 42 are arranged, or the diameter of the first through holes 422 on the inner side is smaller. In the embodiment of the present application, the arrangement and size of the first through holes 422 are not further limited.

[0135] Similarly, the density of the second through holes 45 at the end of the extension wall 43 away from the wind guide cover 20 can be greater than the density of the second through holes 45 at the end of the extension wall 43 facing the wind guide cover 20. In this way, more second through holes 45 can be located at the end of the extension wall 43 away from the wind guide cover 20, so that more fluid channels are formed by the first air inlet 23 and the end of the extension wall 43 away from the wind guide cover 20, and the length of these fluid channels is longer, which can further improve the spoiler effect and thus improve the noise reduction effect.

[0136] For example, the density of the second through holes 45 gradually increases in the direction from the second air inlet 441 to the second air outlet 442. In this way, the number of the second through holes 45 in the radial direction of the stator impeller 40 can be changed more evenly, which can improve the uniformity of the turbulence effect at different positions, thereby reducing the shaking of the motor 100 and improving the stability of the motor 100.

[0137] Of course, in other embodiments, the plurality of second through holes 45 may be arranged on the extension wall 43 in an irregular manner, so that there are more second through holes 45 on the outside of the extension wall 43, or the diameter of the second through holes 45 on the outside of the extension wall 43 is larger, and the number of second through holes 45 on the inside of the extension wall 43 is smaller, or the diameter of the second through holes 45 on the inside of the extension wall 43 is smaller. In the embodiments of the present application, the arrangement and size of the second through holes 45 are not further limited.

[0138] In some embodiments, the plurality of blades 42 are centrally symmetrically distributed around the central axis of the stator impeller 40. By centrally symmetrically distributing the plurality of blades 42 around the central axis of the stator impeller 40, the force balance of the stator impeller 40 can be improved, thereby improving the stability of the stator impeller 40.

[0139] It should be noted that in the embodiment of the present application, there is no limit on the number of blades 42. For example, the number of blades 42 can be 5, 6, 7, 8, 9, 10 or more, which can be determined according to the size of the stator 40 and is not further limited in the embodiment of the present application.

[0140] In a possible implementation, the shapes of the first through hole 422 and the second through hole 45 can be circular, triangular, quadrilateral, polygonal, plum blossom or crescent, etc. By setting the shapes of the first through hole 422 and the second through hole 45 to be circular, triangular, quadrilateral, polygonal, plum blossom or crescent, the turbulence effect can be improved, and the design flexibility of the stator 40 can be improved.

[0141] Of course, in other embodiments, the shapes of the first through hole 422 and the second through hole 45 may also be set to other shapes. In the embodiment of the present application, the shapes of the first through hole 422 and the second through hole 45 are not further limited.

[0142] Combination Figure 2 and Figure 7 As shown, a third accommodating chamber 52 is provided in the housing 50 of the motor 100, and part of the main body 10 is provided in the third accommodating chamber 52. Among them, one end of the drive shaft 11 connected to the impeller 30 extends outside the third accommodating chamber 52. In the axial direction of the drive shaft 11 (in the x direction), the housing 50 and the impeller 30 are spaced apart, and part of the structure of the stator 40 is located between the housing 50 and the impeller 30, and the stator 40 is connected to the housing 50. By providing the housing 50 and providing the third accommodating chamber 52 in the housing 50, a mounting position can be provided for the main body 10 of the motor 100, and a certain protection effect can be played on the main body 10 of the motor 100. By extending one end of the drive shaft 11 connected to the impeller 30 outside the third accommodating chamber 52 so that the drive shaft 11 is connected to the impeller 30, by spacing the casing 50 and the impeller 30 so as to provide an accommodation space for the stator 40, and by connecting the stator 40 to the casing 50, the stability of the stator 40 can be improved, thereby reducing the shaking of the stator 40 and reducing noise.

[0143] Exemplarily, the fixed impeller 40 and the movable impeller 30 are coaxially arranged. And the central axes of the fixed impeller 40 and the movable impeller 30 are colinear with the central axis of the drive shaft 11. The fixed impeller 40 is located at one end of the movable impeller 30 away from the first air inlet 23. The movable impeller 30 is used to generate airflow when rotating, so that the airflow is discharged through the fixed impeller 40, part of the first accommodating chamber 21, the air duct 421 and / or the first through hole 422, and negative pressure is generated.

[0144] By arranging the stator impeller 40 and the impeller 30 coaxially, the assembly space of the stator impeller 40 and the impeller 30 can be reduced, which is conducive to the miniaturization of the motor 100. By arranging the stator impeller 40 at the end of the impeller 30 away from the first air inlet 23, the length of the fluid channel from the airflow entering from the first air inlet 23 to the air duct 421 and / or the first through hole 422 can be extended, the turbulence effect is increased, and the noise reduction effect is improved.

[0145] like Figure 7 As shown, there is a gap between the extension wall 43 and the housing 50, so that the second accommodating cavity 44 is connected to the outside of the housing 50. Exemplarily, the outside of the housing 50 is provided with ridges 51 distributed along the circumference of the housing 50. The ridges 51 are located at one end of the extension wall 43 away from the air guide cover 20, and there is a gap between the extension wall 43 and the ridges 51.

[0146] By providing a gap between the extension wall 43 and the housing 50, the fixed impeller 40 and the outer side of the motor 100 can be connected, so that a fluid channel is formed between the first air inlet 23 and the second air outlet 442, so that the negative pressure generated by the impeller 30 can be released, and then the motor 100 generates suction, so that the cleaning equipment using the motor 100 has functions such as dust collection. By providing ribs 51 arranged at intervals from the housing 50 to the second outer side, a partial fluid channel can be formed between adjacent ribs 51. In other words, part of the airflow flowing out of the second air outlet 442 of the extension wall 43 can enter between adjacent ribs 51, so that the length of the fluid channel of the airflow flowing out of the second air outlet 442 of the extension wall 43 can be extended, thereby increasing the turbulence effect and reducing noise. In addition, the ribs 51 are arranged on the outer side of the housing 50, which can also increase the structural strength of the housing 50, thereby extending the service life of the motor 100.

[0147] Of course, in other embodiments, the extension wall 43 may also be in contact with the ridges 51, and the extension wall 43 is connected to the gap between the adjacent ridges 51. In this way, the length of the fluid channel of the airflow flowing out of the second air outlet 442 of the extension wall 43 can be extended, thereby increasing the turbulence effect and reducing noise. In the embodiment of the present application, the positional relationship between the extension wall 43 and the ridges 51 is not further limited.

[0148] In a possible implementation, the height of the ridge 51 in the radial direction of the stator 40 gradually increases in the direction from the second air inlet 441 to the second air outlet 442. This can further increase the turbulence effect, thereby improving the noise reduction effect. Of course, in other embodiments, the ridge 51 can also be set to a structure of other shapes. In the embodiment of the present application, the specific shape of the ridge 51 is not further limited.

[0149] It should be noted that there are multiple ridges 51 on the outer side of the shell 50, and the sizes of the multiple ridges 51 are not necessarily all the same, and can be specifically set according to the size of the shell. In the embodiment of the present application, the number of ridges 51 and the size of the ridges 51 are not further limited.

[0150] like Figure 2 As shown, the body 10 may further include a coil 12, and the coil 12 is located in the third accommodating chamber 52. The radial projection of the extension wall 43 in the stator impeller 40 at least partially overlaps with the radial projection of the coil 12 in the stator impeller 40.

[0151] By projecting the extension wall 43 in the radial direction of the stator impeller 40 so that it at least partially overlaps with the radial projection of the coil 12 in the stator impeller 40, the extension wall 43 can cover a portion of the coil 12. When the airflow flows out from the second air outlet 442 or the second through hole 45 of the extension wall 43, part of the heat generated by the coil 12 can be taken away, thereby cooling the motor 100 and improving the heat dissipation efficiency of the motor 100.

[0152] Exemplarily, the radial projection of the extension wall 43 in the stator impeller 40 coincides with one half, one third or one quarter of the radial projection of the coil 12 in the stator impeller 40. In the embodiment of the present application, the overlapping ratio of the radial projection of the extension wall 43 and the coil 12 in the stator impeller 40 is not further limited.

[0153] Of course, in some embodiments, the extension wall 43 is projected in the radial direction of the stator impeller 40, and there is no overlap with the radial projection of the coil 12 in the stator impeller 40, while the ridge 51 on the outer side of the shell 50 is projected in the radial direction of the stator impeller 40, and partially overlaps with the radial projection of the coil 12 in the stator impeller 40, which can improve the heat dissipation performance of the motor 100.

[0154] like Figure 8 As shown, the impeller 30 may include a base plate 31, a guide plate 33 and a plurality of blades 32. The base plate 31 and the guide plate 33 are arranged opposite to each other, and the plurality of blades 32 are located between the base plate 31 and the guide plate 33.

[0155] It should be noted that, in the embodiments of the present application, "relative arrangement" includes but is not limited to being directly opposite, and may also be an oblique relative arrangement, etc.

[0156] Exemplarily, a plurality of blades 32 are arranged at intervals along the circumferential spiral of the drive shaft 11, and an air outlet channel is formed between two adjacent blades 32, the air outlet channel extends to the side of the blade 32 away from the drive shaft 11, and an air outlet 34 is formed on the side of the blade 32 away from the drive shaft 11. The air outlet 34 is connected to the first accommodating cavity 21 of the air guide cover 20.

[0157] It should be noted that the spiral directions of the multiple fan blades 32 can be clockwise or counterclockwise, and the spiral directions of the multiple fan blades 32 are the same, so that the impeller 30 can be a centrally symmetrical structure, so that when the impeller 30 rotates, the airflow on the outside of the impeller 30 is relatively uniform, which can reduce the shaking and vibration of the impeller 30, thereby improving the stability of the motor 100 and reducing noise.

[0158] By providing a plurality of blades 32, a plurality of air outlets 34 are formed on the outer side of the impeller 30. The airflow formed when the fixed impeller 40 rotates can enter the first accommodation chamber 21 through the air outlet channel between the blades 32 and the air outlet 34, and then be discharged from the air duct 421 and / or the first through hole 422 that communicates between the impeller 30 and the first accommodation chamber 21, forming a negative pressure. In the axial direction of the drive shaft 11, one end of the blade 32 is connected to the base plate 31, and the other end of the blade 32 is connected to the guide plate 33. The base plate 31 is used to connect the impeller 30 to the drive shaft 11, and the guide plate 33 is formed with an opening 35 at one end away from the base plate 31, and the opening 35 is communicated with the first air inlet 23.

[0159] Exemplarily, the impeller 30 and the drive shaft 11 may be connected via a fixing member 80 so that when the drive shaft 11 rotates, the impeller 30 may be driven to rotate. In the embodiment of the present application, the structure of the fixing member 80 is not further limited.

[0160] By arranging a plurality of blades 32 at intervals along the circumferential spiral of the drive shaft 11, relative to the radial arrangement along the impeller 30, the length of the blades 32 can be extended, thereby extending the length of the fluid channel, and increasing the turbulence effect and reducing noise while inhaling air. By connecting one end of the blade 32 to the substrate 31 and the other end of the blade 32 to the guide plate 33, the stability of the blade 32 can be improved, the blade 32 can be prevented from loosening, and noise can be reduced. The opening 35 of the guide plate 33 is connected to the first air inlet 23 so that the impeller 30 can inhale air from the first air inlet 23 to form a negative pressure. It should be further explained that in order to generate a larger negative pressure and ensure the suction efficiency of the entire motor, the impeller technicians in this field will not punch the impeller blades at the expense of motor efficiency.

[0161] For example, Fig. 9 As shown, in the radial direction of the impeller 30, the distance H from at least part of the guide plate 33 to the drive shaft 11 gradually decreases in the direction from the first air outlet 24 to the first air inlet 23. The distance h from at least part of the blade 32 to the base plate 31 gradually increases in the direction from the outer side to the inner side of the base plate 31, so that the blade 32 is a sheet-like structure with one end inclined.

[0162] In this way, at least part of the structure of the guide plate 33 can be a conical structure, and the end of the conical structure with a smaller size is close to the first air inlet 23. That is to say, the air flow can enter from a smaller opening 35 and then flow out from a larger opening 35. This can increase the negative pressure formed in the impeller 30, thereby improving the suction force of the motor 100.

[0163] like Fig.10 As shown, a connecting portion 70 is provided on the outer side of one of the air scoop 20 and the stator 40. A third through hole 71 is provided on the connecting portion 70, and the third through hole 71 is communicated with the outer side of the housing 50. Exemplarily, a connecting portion 70 is provided on the air scoop 20. The connecting portion 70 is arranged around one end of the air scoop 20 close to the stator 40. A plurality of third through holes 71 are arranged at intervals in the circumferential direction of the air scoop 20.

[0164] The connecting portion 70 is provided to connect the motor 100 to the motor assembly 200 or the cleaning device. The third through hole 71 is provided on the connecting portion 70, so that the airflow exhausted from the inside of the motor 100 can be exhausted again through the third through hole 71, and the airflow is further reduced in noise, thereby improving the noise reduction effect of the motor 100. By providing the connecting portion 70 on the air guide cover 20, the structure of the stator impeller 40 can be simplified, and the difficulty of processing the stator impeller 40 can be reduced.

[0165] Of course, in other embodiments, the connection portion 70 may also be disposed on the stator 40 . In the embodiment of the present application, the location of the connection portion 70 is not further limited.

[0166] It should be noted that the motor 100 can be used in floor scrubbers, vacuum cleaners, sweepers, etc. In the embodiment of the present application, the type of cleaning equipment to which the motor 100 is applied is not further limited.

[0167] The present application also provides a motor assembly 200, such as Fig.11 As shown, the motor assembly 200 may include a motor cover 210 and the motor 100 in any of the above embodiments. The motor 100 is disposed in the motor cover 210 , and the air duct 421 and the first through hole 422 on the motor 100 are both connected to the motor cover 210 .

[0168] like Fig.11As shown, the motor cover 210 includes an air inlet 211 and an air outlet 212, wherein the air inlet 211 is communicated with the first air inlet 23 of the motor 100, and the air outlet 212 is communicated with the air duct 421 and the first through hole 422 of the motor 100. When used, the air inlet 211 of the motor cover 210 can be communicated with the dust box or sewage box of the cleaning device, so that the cleaning device can suck garbage into the dust box or sewage box.

[0169] The motor assembly 200 provided in the embodiment of the present application can reduce noise and improve user experience by disposing the above-mentioned motor 100, and is conducive to the miniaturization of cleaning equipment.

[0170] It should be noted that the motor assembly 200 can be applied to floor scrubbers, vacuum cleaners, sweepers, etc. In the embodiment of the present application, the type of cleaning equipment to which the motor 100 is applied is not further limited.

[0171] The embodiment of the present application further provides a cleaning device 1000, wherein the cleaning device 1000 may be a floor scrubber, a vacuum cleaner, a sweeper, etc. In the embodiment of the present application, the type of the cleaning device 1000 is not further limited.

[0172] like Fig.12 As shown, the cleaning device 1000 may be a floor scrubber. For example, the cleaning device 1000 may include a body 300, a handle 400, and a motor 100 in any of the above embodiments. The handle 400 is connected to the body 300, and the motor 100 is disposed on the body 300. In the embodiment of the present application, the specific position where the motor 100 is disposed on the body 300 is not further limited.

[0173] The cleaning device 1000 provided in the embodiment of the present application can reduce noise and improve user experience by providing the above-mentioned motor 100, and is also conducive to the miniaturization of the cleaning device 1000.

[0174] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0175] In the description of the present application, it should be understood that the terms "including" and "having" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0176] Unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected or indirectly connected through an intermediate medium, and it can make the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0177] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A motor, characterized in that: include: a main body, including a drive shaft; A moving impeller is arranged at one end of the driving shaft, and the driving shaft is used to drive the moving impeller to rotate; The fixed impeller comprises a wheel body and a plurality of blades spaced apart along the circumference of the wheel body, an air channel is formed between adjacent blades, the wheel body is arranged on the main body, and the blades are provided with a first through hole; The wind guide hood encloses a first accommodating cavity, the wind guide hood includes a first air inlet and a first air outlet connected to the first accommodating cavity, the impeller is arranged in the first accommodating cavity, the wind guide hood is connected to the stator, and the stator is located at one end of the wind guide hood where the first air outlet is set, and the air duct and the first through hole are both connected to the first accommodating cavity.

2. The motor according to claim 1, characterized in that The plurality of blades are spirally arranged on the outer side of the wheel body along the same direction; wherein, Orthographic projections of two adjacent blades on the stator impeller in the axial direction of the stator impeller do not overlap with each other.

3. The motor according to claim 1 or 2, characterized in that: Orthographic projections of at least a portion of the first through holes on two adjacent blades in the axial direction of the first through holes do not overlap with each other.

4. The motor according to claim 1 or 2, characterized in that: Each of the blades includes at least one of the first through holes; wherein, In the radial direction of the stator wheel, the density of the first through holes on the side of the blades away from the wheel body is greater than the density of the first through holes on the side of the blades close to the wheel body.

5. The motor according to claim 4, characterized in that In a direction from a side of the blade close to the wheel body to a side of the blade away from the wheel body, the density of the first through holes gradually increases.

6. The motor according to claim 1 or 2, characterized in that: The first through hole has a shape of circle, triangle, quadrilateral, polygon, plum blossom or crescent.

7. The motor according to claim 1 or 2, characterized in that: The stator wheel comprises an extension wall; wherein, The extending wall encloses a second accommodating cavity, and the extending wall includes a second air inlet and a second air outlet communicated with the second accommodating cavity; The wheel body and the blades are both located in the second accommodating cavity; One end of the extension wall where the second air inlet is arranged is connected to one end of the air guide cover where the first air outlet is arranged; One end of the extension wall where the second air outlet is arranged extends along the axial direction of the stator wheel to the outer side of the blade in a direction away from the air guide cover.

8. The motor according to claim 7, characterized in that The extending wall is provided with a second through hole communicating with the second accommodating cavity.

9. The motor according to claim 8, characterized in that The second through hole is located at one end of the extension wall away from the wind guide cover, and the second through hole is located on the portion of the extension wall extending to the outside of the blade.

10. The motor according to claim 8 or 9, characterized in that: The density of the second through holes at the end of the extending wall facing away from the air guide cover is greater than the density of the second through holes at the end facing the air guide cover.

11. The motor according to claim 10, characterized in that In a direction from the second air inlet to the second air outlet, the density of the second through holes gradually increases.

12. The motor according to claim 8, characterized in that The second through hole has a shape of circle, triangle, quadrilateral, polygon, plum blossom or crescent.

13. The motor according to claim 7, characterized in that One end of the extension wall where the second air inlet is arranged is provided with a mounting portion; A matching portion is provided at one end of the air guide cover where the first air outlet is provided; The mounting portion is plug-fitted with the matching portion.

14. The motor according to claim 7, characterized in that It also includes a shell, which has a third accommodating chamber, and part of the main body is arranged in the third accommodating chamber; wherein, One end of the driving shaft connected to the impeller extends outside the third accommodating chamber; In the axial direction of the driving shaft, the housing and the impeller are spaced apart, a partial structure of the stator impeller is located between the housing and the impeller, and the stator impeller is connected to the housing.

15. The motor according to claim 14, characterized in that A gap is defined between the extending wall and the shell, so that the second accommodating cavity is in communication with the outside of the shell.

16. The motor according to claim 15, characterized in that The outer side of the shell is provided with ridges spaced apart along the circumference of the shell; wherein, The convex ridge is located at one end of the extension wall away from the air guide cover, and a gap is formed between the extension wall and the convex ridge.

17. The electric machine according to claim 16, characterized in that In the direction from the second air inlet to the second air outlet, the height of the ridge in the radial direction of the stator impeller gradually increases.

18. The motor according to any one of claims 14 to 17, characterized in that: The main body includes a coil, and the coil is located in the third accommodating cavity; wherein, The orthographic projection of the extension wall in the radial direction of the stator impeller at least partially overlaps with the orthographic projection of the coil in the radial direction of the stator impeller.

19. The motor according to any one of claims 14 to 17, characterized in that: Also includes a connecting piece; wherein, The wheel body is provided with a plurality of first mounting holes; The housing is provided with an assembly hole matched with the first mounting hole; The connecting member is used to fixedly connect the wheel body and the housing through the first mounting hole and the assembly hole.

20. The electric machine according to claim 19, characterized in that The wheel body is an annular structure; wherein, The annular structure includes a second mounting hole; The wheel body is sleeved on the outer side of the driving shaft through the second mounting hole, and a sealing structure is provided between the second mounting hole and the driving shaft.

21. The electric machine according to claim 1 or 2, characterized in that: The impeller comprises a base plate, a guide plate and a plurality of blades; wherein, In the axial direction of the driving shaft, the base plate and the guide plate are arranged opposite to each other, and the plurality of fan blades are located between the base plate and the guide plate, one end of the fan blade is connected to the base plate, and the other end of the fan blade is connected to the guide plate; The base plate is used to connect the impeller with the drive shaft. An opening is formed at one end of the guide plate away from the base plate, and the opening is communicated with the first air inlet.

22. The electric machine according to claim 21, characterized in that The plurality of blades are arranged at intervals along the circumferential spiral of the impeller; wherein, An air outlet channel is formed between two adjacent fan blades, the air outlet channel extends to a side of the fan blade away from the drive shaft, and an air outlet is formed on the side of the fan blade away from the drive shaft; The air outlet is communicated with the first accommodating cavity of the air guide cover.

23. The electric machine according to claim 22, characterized in that The fixed impeller and the movable impeller are coaxially arranged; wherein, The fixed impeller is located at an end of the movable impeller away from the first air inlet; The impeller is used to generate airflow when rotating, so that the airflow is discharged through the air outlet channel, part of the first accommodating cavity, the air duct and / or the first through hole to generate negative pressure.

24. The electric machine according to claim 21, characterized in that In the radial direction of the impeller, the distance from at least part of the guide plate to the drive shaft gradually decreases along the direction from the first air outlet to the first air inlet.

25. The electric machine according to claim 14, characterized in that A connecting portion is provided on the outer side of one of the air guide cover and the stator impeller; wherein, The connecting portion is provided with a third through hole, and the third through hole is communicated with the outer side of the shell.

26. The electric machine according to claim 25, characterized in that The connecting portion is provided on the air guide cover.

27. A motor assembly, characterized in that: It comprises a motor cover and a motor as described in any one of claims 1 to 26 above; wherein, The motor is arranged in the motor cover, and the air duct and the first through hole on the motor are both communicated with the motor cover.

28. A cleaning device, characterized in that: It comprises a body, a handle and a motor as described in any one of claims 1 to 26 above; wherein, The handle is connected to the body, and the motor is arranged on the body.

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