A wet / dry vacuum cleaner motor and a vacuum cleaner

Abstract

The present invention discloses a wet and dry vacuum cleaner motor and a vacuum cleaner, comprising a stator assembly and a rotor assembly, wherein the rotor assembly comprises a rotating shaft for transmission, and also comprises a front cover assembly and a rear cover assembly coaxially sleeved at both ends of the rotating shaft, the front cover assembly comprises a front cover body, a moving impeller, and a guide air hood; the moving impeller comprises a first fan blade spirally arranged around the center of the moving impeller, and a first air outlet is constructed between adjacent first fan blades, and the moving impeller also comprises a first air inlet; the guide air hood is provided with a plurality of second air outlets corresponding to the first air outlet, and is also provided with a second air inlet coaxially arranged with the first air inlet; the front cover assembly also comprises a waterproof sleeve for preventing water vapor from entering the rotor assembly, and the waterproof sleeve is arranged between the moving impeller and the front cover body. The present invention prevents water vapor from being sucked into the bearing by arranging a waterproof sleeve between the moving impeller and the front cover body, and the waterproof sleeve is not easy to wear, thereby effectively improving the overall life of the motor.

Description

Technical Field

[0001] The invention relates to the technical field of power equipment, and in particular to a wet and dry vacuum cleaner motor and a vacuum cleaner. Background Art

[0002] With the advancement of science and technology and the continuous improvement of people's living standards, household appliances such as handheld vacuum cleaners are becoming more and more widely used. Due to different application scenarios, the requirements for vacuum cleaners are also different. Since it is easy for the vacuum cleaner motor to introduce water vapor into the motor when it is working, and the water vapor entering the motor is easy to cause damage to the motor, a corresponding waterproof structure is usually configured in the vacuum cleaner motor. The existing waterproof structure usually uses a sealing ring, but the sealing ring structure has the following disadvantages: when the sealing ring structure rotates with the shaft, it is very easy to cause friction loss, resulting in a short life of the vacuum cleaner motor. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a wet and dry vacuum cleaner motor and a vacuum cleaner in view of the defects of the prior art.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A wet and dry vacuum cleaner motor comprises a stator assembly and a rotor assembly coaxially sleeved, wherein the rotor assembly comprises a rotating shaft for transmission, and further comprises a front cover assembly and a rear cover assembly coaxially sleeved at both ends of the rotating shaft, wherein the front cover assembly comprises a front cover body for connecting the rotor assembly, a moving impeller for forming a suction force, and a guide air hood sleeved outside the moving impeller;

[0006] The impeller comprises at least three first blades arranged in a spiral around the center of the impeller, and a first air outlet is configured between adjacent first blades. The impeller further comprises a first air inlet arranged at the spiral center of the first blade;

[0007] The wind deflector cover is provided with a plurality of second air outlets corresponding to the first air outlets on its upper periphery, and is also provided with a second air inlet coaxially arranged with the first air inlet;

[0008] The front end cover assembly also includes a waterproof sleeve for preventing water vapor from entering the rotor assembly. The waterproof sleeve is coaxially sleeved on the rotating shaft and is arranged between the impeller and the front end cover body.

[0009] Preferably, the waterproof sleeve includes at least two waterproof protrusions coaxially spaced apart, and a connecting bottom surface for connecting a plurality of the waterproof protrusions into one, the waterproof protrusion is an annular structure, and the connecting bottom surface is also provided with a center through hole for sleeved the waterproof sleeve outside the rotating shaft, and the center through hole is coaxially arranged with the waterproof protrusion.

[0010] Preferably, the plurality of waterproof protrusions have the same height;

[0011] Alternatively, the plurality of waterproof protrusions have different heights.

[0012] Preferably, a groove for accommodating the waterproof protrusion is further provided on the side of the front end cover body facing the impeller, and the groove and the waterproof protrusion are matched with each other in a clearance and are arranged one by one;

[0013] The waterproof shaft sleeve rotates with the rotating shaft, and the waterproof protrusion slides in the groove.

[0014] Preferably, the impeller further comprises a front wall and a rear wall for clamping and fixing the first impeller, the front wall and the rear wall are arranged in parallel, wherein a first air inlet side wall with a gradually decreasing diameter is protruded on the front wall in a direction away from the rear wall, and an end of the first air inlet side wall away from the front wall is configured as the first air inlet;

[0015] The first air inlet side wall is an arc-shaped side wall concave toward the axial direction.

[0016] Preferably, the outer diameters of the front wall and the rear wall are consistent, the first fan blades are arc-shaped fan blades spirally arranged in the same direction, and the number of the first fan blades is an odd number greater than 3;

[0017] One end of the first fan blade extends to the outer diameter of the front wall and the rear wall, and the adjacent first fan blades are configured as the first air outlet on the outer diameter of the front wall and the rear wall.

[0018] Preferably, the wind deflector comprises an air outlet side wall provided with a plurality of the second air outlets, and a second air inlet side wall for constructing the second air inlet;

[0019] The second air inlet side wall extends in a direction away from the air outlet side wall and has a gradually decreasing diameter, and an end of the second air inlet side wall away from the air outlet side wall is configured as the second air inlet.

[0020] Preferably, the guide air cover is sleeved outside the impeller;

[0021] The second air inlet side wall further comprises a baffle plate with a circular ring structure, wherein the baffle plate is arranged at one end of the second air inlet side wall away from the air outlet side wall, and the inner diameter of the circular ring of the baffle plate is configured as the second air inlet.

[0022] Preferably, the area of ​​the first air inlet is larger than the area of ​​the second air inlet.

[0023] Preferably, a convex edge is also provided on the inner diameter of the baffle to guide the intake air flow. The convex edge is perpendicular to the baffle and extends toward the impeller. An annular space is constructed between the convex edge and the second air inlet side wall. The end with a smaller diameter of the first air inlet side wall is arranged in the annular space. The intake air flow passes through the second air inlet and the first air inlet in sequence and enters the impeller.

[0024] Preferably, the number of the second air outlets is an odd number, and they are arranged at circumferential intervals on the air outlet side wall. The width of the second air outlet is consistent with the width of the first fan blade, and the second air outlet and the first air outlet are arranged to overlap axially. After the intake air flow enters the impeller, it leaves the vacuum cleaner motor through the first air outlet and the second air outlet in sequence.

[0025] Preferably, the total area of ​​the plurality of first air outlets is smaller than the total area of ​​the plurality of second air outlets.

[0026] Preferably, an air guide side plate for providing flow guidance for the airflow is obliquely arranged on the air outlet side wall, the air guide side plate is arranged in one-to-one correspondence with the second air outlet, and the intake airflow leaves the vacuum cleaner motor along the direction of the air guide side plate;

[0027] An angle less than 90° is formed between the air guide side plate and the second air outlet, and the opening directions of the plurality of angles are consistent and are all opened toward the circumferential direction of the air outlet side wall.

[0028] Preferably, when the impeller is sleeved in the air guide cover, the direction of the angle is opposite to the spiral direction of the first fan blade.

[0029] Preferably, the stator assembly comprises a casing, and a stator core and an insulating wire frame coaxially sleeved in the casing, and the outer wall of the stator core is arranged closely against the inner wall of the casing;

[0030] At least three first positioning members are arranged at intervals along the circumference of the outer wall of the stator core, and a second positioning member is arranged on the inner wall of the casing to cooperate with the first positioning member. The first positioning member and the second positioning member are arranged in a one-to-one correspondence, and the casing and the stator core are positioned in the circumferential direction through the cooperation and connection between the first positioning member and the second positioning member.

[0031] Preferably, one of the first positioning member and the second positioning member is a positioning groove, and the other is a positioning protrusion arranged corresponding to the positioning groove, and the stator core and the housing are circumferentially positioned by the cooperation of the positioning groove and the positioning protrusion.

[0032] Preferably, the rotor assembly further comprises a first bearing and a second bearing respectively arranged at two ends of the rotating shaft, a magnetic steel coaxially sleeved in the stator core, and a heat dissipation impeller for heat dissipation;

[0033] The heat dissipation impeller comprises at least three second fan blades which are arranged in a spiral manner, and the spiral center of the second fan blades is arranged coaxially with the rotating shaft.

[0034] Preferably, the heat dissipation impeller further comprises a first bracket and a second bracket for fixing the plurality of the second fan blades into one body, and the first bracket and the second bracket clamp the second fan blades along the width direction of the second fan blades;

[0035] The second bracket arranged close to the stator assembly is a circular ring structure.

[0036] Preferably, a accommodating cavity for accommodating the heat dissipating impeller is provided on the side of the front end cover body facing away from the waterproof sleeve, one end of the casing is inserted into the accommodating cavity, and a wind gap for air flow is provided between the casing and the side wall of the accommodating cavity.

[0037] Preferably, the rear end cover assembly comprises a rear end cover body coaxially sleeved outside the second bearing, and a rear cover sleeved outside the rear end cover body, and the rear cover is fixedly connected to the casing.

[0038] Preferably, the rear cover is provided with a plurality of through holes, and the heat dissipation airflow enters the vacuum cleaner motor through the through holes;

[0039] The rear end cover body is provided with a first air hole for allowing the heat dissipation airflow to pass through, and the stator assembly is provided with a second air hole for allowing the heat dissipation airflow to pass through;

[0040] The through hole, the first air hole, the second air hole, and the air gap are interconnected to form an air flow channel. After the heat dissipation impeller rotates, the heat dissipation airflow enters the air flow channel through the through hole, passes through the first air hole and the second air hole in sequence, and finally leaves the vacuum cleaner motor through the air gap.

[0041] The present invention further provides a vacuum cleaner, comprising any one of the vacuum cleaner motors described above.

[0042] The present invention has the following beneficial effects: by arranging a waterproof sleeve between the impeller and the front end cover body, water vapor is prevented from being sucked into the bearing, and the waterproof sleeve is not easy to wear, thereby effectively improving the overall life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0044] Figure 1 : is a cross-sectional view of the overall structure of the vacuum cleaner motor of the present invention (the solid arrow is the flow path of the heat dissipation airflow, and the dotted arrow is the flow path of the intake airflow);

[0045] Figure 2 It is a three-dimensional structural schematic diagram of the rotor assembly of the vacuum cleaner motor of the present invention;

[0046] Figure 3 yes Figure 2 A cross-sectional structural diagram of the rotor assembly shown;

[0047] Figure 4 It is a schematic cross-sectional structure diagram of the stator assembly of the vacuum cleaner motor of the present invention along the vertical axis direction;

[0048] Figure 5 It is a cross-sectional view of the matching structure of the front end cover assembly and the rotating shaft of the vacuum cleaner motor of the present invention (the arrow indicates the flow direction of the intake air flow);

[0049] Figure 6 yes Figure 5 A partial enlarged view of the middle A area;

[0050] Figure 7 Schematic diagram of the structure of the impeller of the vacuum cleaner motor of the present invention (the arrow indicates the flow direction of the intake air flow);

[0051] Figure 8 yes Figure 7 Schematic diagram of the cross-sectional structure of the middle moving impeller;

[0052] Fig. 9 Schematic diagram of the structure of the air guide cover of the vacuum cleaner motor of the present invention (the arrow indicates the flow direction of the intake air flow);

[0053] Fig.10 yes Fig. 9 A schematic diagram of the cross-sectional structure of the middle air guide hood;

[0054] Fig.11 It is a cross-sectional view of the coordinated structure of the impeller and the guide hood (the arrow indicates the flow direction of the intake air flow). DETAILED DESCRIPTION

[0055] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0056] The wet and dry vacuum cleaner motor provided by the present invention is used to provide suction for the vacuum cleaner. Figure 1 , which may specifically include a stator assembly 10, a rotor assembly 20, a front cover assembly 30 and a rear cover assembly 40. The stator assembly 10 is coaxially sleeved outside the rotor assembly 20, and the front cover assembly 30 and the rear cover assembly 40 are arranged opposite to each other, and the stator assembly 10 and the rotor assembly 20 are contained therein to form a complete motor.

[0057] refer to Figure 2 The rotor assembly 20 includes a rotating shaft 21 that runs through the center of the vacuum cleaner motor, and a first bearing 22, a second bearing 23, a magnetic steel 25, and a heat dissipation impeller 24 that are coaxially arranged with the rotating shaft 21. The first bearing 22 and the second bearing 23 are respectively arranged at both ends of the rotating shaft 21, and the heat dissipation impeller 24 and the magnetic steel 25 are arranged between the first bearing 22 and the second bearing 23. When the vacuum cleaner motor is powered on, the magnetic steel 25 can drive the rotating shaft 21 to rotate at a high speed under the action of the magnetic field. In the present invention, the magnetic steel 25 is a circular permanent magnet, which can adapt to high-speed working conditions in terms of mechanical strength.

[0058] refer to Figure 1 The stator assembly 10 includes a housing 11, a stator core 12 and an insulating wire frame 13 coaxially sleeved in the housing 11, wherein the stator core 12 is coaxially sleeved outside the magnetic steel 25, and the wire frame is axially arranged on both sides of the stator core 12. Further, refer to Figure 4 In the stator assembly 10, the outer wall of the stator core 12 is arranged close to the inner wall of the housing 11. In order to extend the service life of the motor and enhance the reliability of the motor, the stator core 12 and the housing 11 are required to be positioned in the circumferential direction and cannot be displaced relative to each other. In some embodiments, at least three first positioning members 14 are arranged at intervals on the outer wall of the stator core 12 along the circumference, and a second positioning member 15 is arranged on the inner wall of the housing 11 to cooperate with the first positioning member 14. The first positioning member 14 and the second positioning member 15 are arranged one by one. Through the cooperation and connection of the first positioning member 14 and the second positioning member 15, the housing 11 and the stator core 12 are positioned in the circumferential direction. In some embodiments, one of the first positioning member 14 and the second positioning member 15 is a positioning groove, and the other is a positioning protrusion arranged corresponding to the positioning groove. The stator core 12 and the housing 11 are positioned in the circumferential direction through the cooperation of the positioning groove and the positioning protrusion, so as to ensure the mechanical strength of the stator assembly 10 in the circumferential direction, avoid the stator core 12 from rotating relative to the housing 11, and increase the reliability of the motor.

[0059] refer to Figure 1 and Figure 5The front cover assembly 30 includes a front cover body 31 for connecting to the rotor assembly 20, a moving impeller 32 for high-speed rotation to form a suction force, a guide wind cover 33 sleeved outside the moving impeller 32, and a waterproof sleeve 34 for preventing water vapor from entering the rotor assembly 20. Specifically, the waterproof sleeve 34 is coaxially sleeved on the rotating shaft 21 and is arranged between the moving impeller 32 and the front cover body 31. When water vapor enters the moving impeller 32 with the air flow, the waterproof sleeve 34 can block the water vapor outside the front cover body 31 to prevent the water vapor from further entering the stator assembly 10 and the rotor assembly 20. Figure 5 The specific structure of the waterproof sleeve 34 is shown in the A area, and the partial enlarged view of the A area is shown in FIG. Figure 6 As shown, the waterproof sleeve 34 includes at least two annular waterproof protrusions 341, and a connecting bottom surface 342 for connecting the plurality of waterproof protrusions 341 into one body, wherein the plurality of waterproof protrusions 341 are coaxially and spaced apart, and the connecting bottom surface 342 is further provided with a central through hole 343 for sleeve the waterproof sleeve 34 outside the rotating shaft 21, and the central through hole 343 is coaxially arranged with the waterproof protrusion 341, so that when the waterproof sleeve 34 is sleeved on the rotating shaft 21 through the central through hole 343 and rotates with the rotating shaft 21, the plurality of waterproof protrusions 341 rotate coaxially. In some embodiments, the plurality of waterproof protrusions 341 have the same height; in other embodiments, the plurality of waterproof protrusions 341 have different heights. That is, the height of the waterproof protrusion 341 may not be limited in the present invention. To facilitate the installation of the waterproof sleeve 34, a waterproof groove 311 for accommodating the waterproof protrusion 341 is further provided on the side of the front end cover body 31 facing the impeller 32. The waterproof groove 311 and the waterproof protrusion 341 are clearance-matched and are arranged one by one. The waterproof sleeve 34 is inserted into the waterproof groove 311 by the waterproof protrusion 341. When the motor is working, the waterproof sleeve 34 rotates with the rotating shaft 21, and the waterproof protrusion 341 slides in the waterproof groove 311, so that the water vapor introduced with the air flow is isolated outside the front end cover body 31 by the waterproof sleeve 34, so as to prevent the water vapor from entering the rotor assembly 20 and the stator assembly 10 through the front end cover body 31.

[0060] For further reference, Figure 7 The impeller 32 includes at least three first blades 321 arranged spirally around the center of the impeller 32. The width of the first blades 321 extends along the axial direction, and a first air outlet 322 is configured between adjacent first blades 321. Specifically, refer to Figure 8, the first fan blades 321 are arc-shaped fan blades arranged in a spiral in the same direction, and the number of the first fan blades 321 is an odd number greater than 3, preferably 7. The impeller 32 also includes a first air inlet 323 arranged at the spiral center of the first fan blade 321. The airflow enters the impeller 32 from the first air inlet 323, and leaves from the first air outlet 322 between the two first fan blades 321 under the high-speed rotation of the impeller 32. In some embodiments, the impeller 32 also includes a front wall 324 and a rear wall 325 for clamping and fixing the first fan blade 321. The front wall 324 and the rear wall 325 are arranged in parallel, and preferably the front wall 324 and the rear wall 325 have the same diameter. Among them, the front wall 324 is annular, and the front wall 324 is also provided with a first air inlet side wall 326 with a gradually decreasing diameter in a direction away from the rear wall 325. The end of the first air inlet side wall 326 away from the front wall 324 is configured as the first air inlet 323. In some embodiments, the first air inlet side wall 326 is an arcuate side wall concave toward the axial direction, that is, the first air inlet side wall 326 is concave inward, and the arcuate side wall guides the flow of air. Further, the first fan blade 321 is sandwiched between the front wall 324 and the rear wall 325, and one end of the first fan blade 321 spirally extends to the outer diameter of the front wall 324 and the rear wall 325, and the adjacent first fan blades 321 are configured as the first air outlet 322 on the outer diameter of the front wall 324 and the rear wall 325.

[0061] refer to Fig. 9, a plurality of second air outlets 331 are arranged around the upper edge of the guide hood 33, and a second air inlet 332 is arranged coaxially with the first air inlet 323. Specifically, the guide hood 33 includes an air outlet side wall 333 with a plurality of second air outlets 331, and a second air inlet side wall 334 for constructing the second air inlet 332; the second air inlet side wall 334 extends in a direction away from the air outlet side wall 333 and gradually decreases in diameter, and one end of the second air inlet side wall 334 away from the air outlet side wall 333 is constructed as the second air inlet 332. The guide hood 33 is sleeved outside the impeller 32, and preferably the first air inlet side wall 326 and the second air inlet side wall 334 are arranged in parallel. Furthermore, in the present invention, in order to ensure that the area of ​​the first air inlet 323 is larger than the area of ​​the second air inlet 332, the second air inlet side wall 334 further includes a baffle 335 of an annular structure, the inner diameter of the baffle 335 is smaller than the diameter of the first air inlet 323, and is arranged at one end of the second air inlet side wall 334 away from the air outlet side wall 333. The inner diameter of the annular ring of the baffle 335 is configured as the second air inlet 332, and the intake air flow passes through the second air inlet 332 and the first air inlet 323 in sequence and enters the impeller 32. Furthermore, a convex edge 336 for guiding the intake air flow is also provided on the inner diameter of the baffle 335, and the convex edge 336 extends toward the direction of the impeller 32, and is preferably arranged perpendicular to the baffle 335; an annular space 337 is configured between the convex edge 336 and the second air inlet side wall 334, and the end with a smaller diameter of the first air inlet side wall 326 is arranged in the annular space 337. In this embodiment, the function of the convex edge 336 is to prevent the intake air flow from entering the gap between the guide air cover 33 and the impeller 32 after passing through the second air inlet 332, thereby preventing the whistling sound from occurring.

[0062] Furthermore, the number of the second air outlets 331 is preferably an odd number, and they are arranged at intervals along the circumference of the air outlet side wall 333. Specifically, the second air outlet 331 is preferably rectangular, the width of the second air outlet 331 is consistent with the width of the first fan blade 321, and the second air outlet 331 and the first air outlet 322 are arranged to overlap in the axial direction, that is, the first air outlet 322 and the second air outlet 331 are strictly aligned in the width direction, otherwise the intake air flow will swirl inside the impeller 32, reducing the suction efficiency and causing unnecessary losses. After the intake air flow enters the impeller 32, it leaves the vacuum cleaner motor through the first air outlet 322 and the second air outlet 331 in turn. In some embodiments, the total area of ​​the first air outlets 322 is less than the total area of ​​the second air outlets 331. Preferably, the total area of ​​the first air outlets 322 exceeds 10%-20% of the total area of ​​the second air outlets 331, so as to ensure that the intake air flow can smoothly flow out of the guide air cover 33 under high pressure. Specifically, the area of ​​the first air outlet 322 is the arc surface area corresponding to the outer diameter of the two adjacent first air blades 321 on the front wall 324 or the rear wall 325; the area of ​​the second air outlet 331 is the opening area of ​​the second air outlet 331 on the air outlet side wall 333.

[0063] Furthermore, the air outlet side wall 333 is obliquely provided with an air guide side plate 3331 for providing flow guidance for the airflow, and the air guide side plate 3331 is arranged in a one-to-one correspondence with the second air outlet 331, and the intake airflow leaves the vacuum cleaner motor along the direction of the air guide side plate 3331. Specifically, there is an angle of less than 90° between the air guide side plate 3331 and the second air outlet 331, and the opening directions of the multiple angles are consistent and all open toward the circumferential direction of the air outlet side wall 333. In the present invention, when the impeller 32 is preferably sleeved in the guide hood 33, the opening direction of the angle is opposite to the spiral direction of the first fan blade 321.

[0064] Further, in the present invention, the heat generated by the motor is continuously output to the outside of the motor by setting a heat dissipation impeller 24 to ensure that the motor as a whole is at a lower temperature level. In the present invention, the heat dissipation impeller 24 is arranged in the rotor assembly 20, specifically between the first bearing 22 and the magnetic steel 25, and the heat dissipation impeller 24 rotates at high speed with the rotating shaft 21, and is used to take the heat generated by the motor away from the motor through the airflow. Further, the heat dissipation impeller 24 includes at least three spirally arranged second fan blades 241, the spiral center of the second fan blades 241 is arranged coaxially with the rotating shaft 21, and the width of the second fan blade 241 extends along the axial direction of the spiral center. In some embodiments, the heat dissipation impeller 24 also includes a first bracket 242 and a second bracket 243 for fixing a plurality of second fan blades 241 as a whole, and the first bracket 242 and the second bracket 243 clamp the second fan blade 241 along the width direction of the second fan blade 241. Among them, the first bracket 242 is arranged toward the first bearing 22, and the second bracket 243 is arranged close to the magnetic steel 25 and the stator assembly 10.

[0065] A accommodating cavity 312 for accommodating the heat dissipation impeller 24 is provided on the side of the front end cover body 31 away from the waterproof sleeve 34, and one end of the casing 11 is inserted into the accommodating cavity 312. Specifically, it is preferred that two cavities with different diameters are coaxially arranged in the accommodating cavity 312, and the diameter of the cavity on the side facing the casing 11 is larger than the diameter of the cavity on the side away from the casing 11, that is, a step is set between the two cavities, one end of the casing 11 is set in the cavity with a larger diameter and abuts the step, and the heat dissipation impeller 24 is set in the cavity with a smaller diameter; further, a wind gap 313 for airflow is provided between the casing 11 and the side wall of the accommodating cavity 312, that is, the wind gap 313 is constructed between the side wall of the cavity with a larger diameter and the outer wall of the casing 11.

[0066] The rear end cover assembly 40 includes a rear end cover body 41 coaxially sleeved outside the second bearing 23 , and a rear cover 42 sleeved outside the rear end cover body 41 . The rear cover 42 is fixedly connected to the housing 11 . The rear cover 42 is provided with a plurality of through holes 421, through which the heat dissipation airflow enters the vacuum cleaner motor; the rear cover body 41 is provided with a first air hole 411 for the heat dissipation airflow to pass through, and the stator assembly 10 is provided with a second air hole 131 for the heat dissipation airflow to pass through. In some embodiments, the second air hole 131 is preferably provided on the insulating wire frame 13, and at least three second air holes 131 are evenly distributed on the insulating wire frame 13; the through holes 421, the first air hole 411, the second air hole 131, and the air gap 313 are interconnected to form an airflow channel. In order to allow the heat dissipation airflow to enter the heat dissipation impeller 24, it is preferred that in the heat dissipation impeller 24, the second bracket 243 provided near the stator assembly 10 is a circular ring structure, that is, the center is hollowed out to allow the airflow to pass through and enter the second fan blade 241. When the heat dissipation impeller 24 rotates with the rotating shaft 21, the heat dissipation airflow enters the airflow channel through the through hole 421, refer to Figure 1 As shown by the solid arrows, the heat dissipation airflow passes through the first air hole 411 and the second air hole 131 in sequence, enters the heat dissipation impeller 24, and finally leaves the vacuum cleaner motor through the air gap 313.

[0067] Furthermore, the rear end cover assembly 40 also includes a PCB board, which is conductively connected to an external power source and is used to supply power to the vacuum cleaner motor. The rotor assembly 20 starts to rotate after receiving power.

[0068] The wet and dry vacuum cleaner motor provided by the present invention is a new vacuum cleaner motor structure, which is applied to a vacuum cleaner. The present invention also provides a vacuum cleaner including the above-mentioned vacuum cleaner motor, so that the vacuum cleaner of the present invention has a high rotation speed, a strong suction force, a low noise and a long service life.

[0069] In the wet and dry vacuum cleaner motor provided by the present invention, when the rotor assembly 20 is powered on, the impeller 32 and the heat dissipation impeller 24 work synchronously to provide suction and dissipate heat at the same time, so as to ensure that the entire motor system maintains a temperature level when running for a long time. In addition, by providing a waterproof shaft sleeve 34, while preventing water vapor from entering the interior of the motor, the aging effect caused by the use of a sealing ring can be effectively avoided, thereby extending the overall service life of the motor.

[0070] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A wet and dry vacuum cleaner motor, comprising a stator assembly (10) and a rotor assembly (20) coaxially sleeved, wherein the rotor assembly (20) comprises a rotating shaft (21) for transmission, characterized in that: It also comprises a front cover assembly (30) and a rear cover assembly (40) coaxially sleeved on both ends of the rotating shaft (21), wherein the front cover assembly (30) comprises a front cover body (31) for connecting to the rotor assembly (20), a moving impeller (32) for generating suction force, and a guide air hood (33) sleeved outside the moving impeller (32); The impeller (32) comprises at least three first blades (321) arranged in a spiral around the center of the impeller (32), a first air outlet (322) is configured between adjacent first blades (321), and the impeller (32) further comprises a first air inlet (323) arranged at the spiral center of the first blade (321); A plurality of second air outlets (331) are arranged corresponding to the first air outlets (322) on the upper circumference of the air guide cover (33), and a second air inlet (332) is also arranged coaxially with the first air inlet (323); The front end cover assembly (30) further comprises a waterproof shaft sleeve (34) for preventing water vapor from entering the rotor assembly (20); the waterproof shaft sleeve (34) is coaxially sleeved on the rotating shaft (21) and is arranged between the impeller (32) and the front end cover body (31); The air guide cover (33) comprises an air outlet side wall (333) provided with a plurality of the second air outlets (331), and a second air inlet side wall (334) for forming the second air inlet (332); The second air inlet side wall (334) extends in a direction away from the air outlet side wall (333) and has a gradually decreasing diameter, and an end of the second air inlet side wall (334) away from the air outlet side wall (333) is configured as the second air inlet (332); The air guide cover (33) is sleeved outside the impeller (32) with a gap; The second air inlet side wall (334) further comprises a baffle plate (335) of a circular ring structure, the baffle plate (335) being arranged at one end of the second air inlet side wall (334) away from the air outlet side wall (333), and the inner diameter of the circular ring of the baffle plate (335) being configured as the second air inlet (332); The baffle plate (335) is also provided with a convex edge (336) on the inner diameter thereof for guiding the intake air flow. The convex edge (336) is perpendicular to the baffle plate (335) and extends in the direction of the impeller (32). An annular space (337) is constructed between the convex edge (336) and the second air inlet side wall (334). The end with a smaller diameter of the first air inlet side wall (326) is arranged in the annular space (337). The intake air flow passes through the second air inlet (332) and the first air inlet (323) in sequence and enters the impeller (32).

2. The wet and dry vacuum cleaner motor according to claim 1, characterized in that: The waterproof shaft sleeve (34) comprises at least two waterproof protrusions (341) coaxially arranged at intervals, and a connecting bottom surface (342) for connecting the plurality of waterproof protrusions (341) into one body; the waterproof protrusion (341) is an annular structure; the connecting bottom surface (342) is also provided with a central through hole (343) for sleeve-mounting the waterproof shaft sleeve (34) outside the rotating shaft (21); the central through hole (343) is coaxially arranged with the waterproof protrusion (341).

3. The wet and dry vacuum cleaner motor according to claim 2, characterized in that: The plurality of waterproof protrusions (341) have the same height; Alternatively, the plurality of waterproof protrusions (341) have different heights.

4. The wet and dry vacuum cleaner motor according to claim 2, characterized in that: A waterproof groove (311) for accommodating the waterproof protrusion (341) is further provided on a side of the front end cover body (31) facing the impeller (32); the waterproof groove (311) and the waterproof protrusion (341) are clearance-matched and are arranged one-to-one; The waterproof shaft sleeve (34) rotates along with the rotating shaft (21), and the waterproof protrusion (341) slides in the waterproof groove (311).

5. The wet and dry vacuum cleaner motor according to claim 1, characterized in that: The impeller (32) further comprises a front wall (324) and a rear wall (325) for clamping and fixing the first impeller (321); the front wall (324) and the rear wall (325) are arranged in parallel, wherein a first air inlet side wall (326) with a gradually decreasing diameter is protruded from the front wall (324) in a direction away from the rear wall (325); an end of the first air inlet side wall (326) away from the front wall (324) is configured as the first air inlet (323); The first air inlet side wall (326) is an arc-shaped side wall that is concave in the axial direction.

6. The wet and dry vacuum cleaner motor according to claim 5, characterized in that: The front wall (324) and the rear wall (325) have the same outer diameter, the first fan blades (321) are arc-shaped fan blades spirally arranged in the same direction, and the number of the first fan blades (321) is an odd number greater than 3; One end of the first fan blade (321) extends to the outer diameter of the front wall (324) and the rear wall (325), and the adjacent first fan blade (321) is configured as the first air outlet (322) on the outer diameter of the front wall (324) and the rear wall (325).

7. The wet and dry vacuum cleaner motor according to claim 1, characterized in that: The number of the second air outlets (331) is an odd number, and they are arranged at intervals along the circumference of the air outlet side wall (333); the width of the second air outlet (331) is consistent with the width of the first fan blade (321), and the second air outlet (331) and the first air outlet (322) are arranged to overlap in the axial direction; after the intake airflow enters the impeller (32), it passes through the first air outlet (322) and the second air outlet (331) in sequence and leaves the vacuum cleaner motor.

8. The wet and dry vacuum cleaner motor according to claim 7, characterized in that: The total area of ​​the plurality of first air outlets (322) is smaller than the total area of ​​the plurality of second air outlets (331).

9. The wet and dry vacuum cleaner motor according to claim 8, characterized in that: An air guide side plate (3331) for providing flow guidance for the airflow is also obliquely arranged on the air outlet side wall (333), the air guide side plate (3331) being arranged in a one-to-one correspondence with the second air outlet (331), and the intake airflow leaves the vacuum cleaner motor along the direction of the air guide side plate (3331); There is an angle of less than 90° between the air guide side plate (3331) and the second air outlet (331), and the opening directions of the multiple angles are consistent and are all opened in the circumferential direction of the air outlet side wall (333).

10. The wet and dry vacuum cleaner motor according to claim 9, characterized in that: When the impeller (32) is sleeved in the air guide cover (33), the direction in which the angle is opened is opposite to the spiral direction of the first fan blade (321).

11. The wet and dry vacuum cleaner motor according to claim 1, characterized in that: The stator assembly (10) comprises a casing (11), and a stator core (12) and an insulating wire frame (13) coaxially sleeved in the casing (11), wherein the outer wall of the stator core (12) is arranged in close contact with the inner wall of the casing (11); At least three first positioning members (14) are arranged at intervals along the circumference of the outer wall of the stator core (12); a second positioning member (15) is provided on the inner wall of the housing (11) and is matched and connected with the first positioning member (14); the first positioning member (14) and the second positioning member (15) are arranged in a one-to-one correspondence; and the housing (11) and the stator core (12) are positioned in the circumferential direction by the matched connection between the first positioning member (14) and the second positioning member (15).

12. The wet and dry vacuum cleaner motor according to claim 11, characterized in that: One of the first positioning member (14) and the second positioning member (15) is a positioning groove, and the other is a positioning protrusion arranged corresponding to the positioning groove, and the stator core (12) and the housing (11) are circumferentially positioned by the cooperation of the positioning groove and the positioning protrusion.

13. The wet and dry vacuum cleaner motor according to claim 11, characterized in that: The rotor assembly (20) further comprises a first bearing (22) and a second bearing (23) respectively arranged at two ends of the rotating shaft (21), a magnetic steel (25) coaxially sleeved in the stator core (12), and a heat dissipation impeller (24) for dissipating heat; The heat dissipation impeller (24) comprises at least three second fan blades (241) arranged in a spiral manner, and the spiral center of the second fan blades (241) is arranged coaxially with the rotating shaft (21).

14. The wet and dry vacuum cleaner motor according to claim 13, characterized in that: The heat dissipation impeller (24) further comprises a first bracket (242) and a second bracket (243) for fixing the plurality of second fan blades (241) into one body, the first bracket (242) and the second bracket (243) clamping the second fan blades (241) along the width direction of the second fan blades (241); The second bracket (243) arranged close to the stator assembly (10) is a circular ring structure.

15. The wet and dry vacuum cleaner motor according to claim 14, characterized in that: A receiving cavity (312) for receiving the heat dissipation impeller (24) is provided on a side of the front end cover body (31) facing away from the waterproof shaft sleeve (34); one end of the housing (11) is inserted into the receiving cavity (312); and a wind gap (313) for allowing airflow to flow is provided between the housing (11) and the side wall of the receiving cavity (312).

16. The wet and dry vacuum cleaner motor according to claim 15, characterized in that: The rear end cover assembly (40) comprises a rear end cover body (41) coaxially sleeved outside the second bearing (23), and a rear cover (42) sleeved outside the rear end cover body (41), wherein the rear cover (42) is fixedly connected to the housing (11).

17. The wet and dry vacuum cleaner motor according to claim 16, characterized in that: The rear cover (42) is provided with a plurality of through holes (421), and heat dissipation airflow enters the vacuum cleaner motor through the through holes (421); The rear end cover body (41) is provided with a first air hole (411) through which the heat dissipation airflow passes, and the stator assembly (10) is provided with a second air hole (131) through which the heat dissipation airflow passes; The through hole (421), the first air hole (411), the second air hole (131), and the air gap (313) are interconnected to form an air flow channel. After the heat dissipation impeller (24) rotates, the heat dissipation airflow enters the air flow channel through the through hole (421), passes through the first air hole (411), the second air hole (131) in sequence, and finally leaves the vacuum cleaner motor through the air gap (313).

18. A vacuum cleaner, characterized in that: A vacuum cleaner motor comprising any one of claims 1-17.

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