CN113494465A

CN113494465A - Wet or dry dust catcher motor and dust catcher

Info

Publication number: CN113494465A
Application number: CN202110740045.2A
Authority: CN
Inventors: 晏熙
Original assignee: Shenzhen Topband Co Ltd
Current assignee: Shenzhen Topband Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-10-12

Abstract

The invention discloses a wet and dry dust collector motor and a dust collector, which comprise a stator assembly and a rotor assembly, wherein the rotor assembly comprises a rotating shaft for transmission, a front end cover assembly and a rear end cover assembly which are coaxially sleeved at two ends of the rotating shaft, and the front end cover assembly comprises a front end cover body, a movable impeller and a flow guide fan cover; the movable impeller comprises first fan blades which are spirally arranged around the center of the movable impeller, a first air outlet is formed between every two adjacent first fan blades, and the movable impeller also comprises a first air inlet; the diversion fan cover is provided with a plurality of second air outlets which are arranged corresponding to the first air outlets, and is also provided with second air inlets which are coaxially arranged with the first air inlets; the front end cover assembly further comprises a waterproof shaft sleeve for preventing water vapor from entering the rotor assembly, and the waterproof shaft sleeve is arranged between the movable impeller and the front end cover body. According to the invention, the waterproof shaft sleeve is arranged between the movable impeller and the front end cover body, so that water vapor is prevented from being sucked into the bearing, and meanwhile, the waterproof shaft sleeve is not easy to wear, thereby effectively prolonging the service life of the whole motor.

Description

Wet or dry dust catcher motor and dust catcher

Technical Field

The invention relates to the technical field of power equipment, in particular to a dry-wet dual-purpose dust collector motor and a dust collector.

Background

With the development of science and technology and the continuous improvement of living standard of people, household appliances such as a handheld dust collector are more and more widely applied. The requirements for dust collectors vary from application to application. Because the motor of the dust collector is easy to introduce steam into the motor when in work and the steam is easy to cause the damage of the motor after entering the motor, a corresponding waterproof structure is usually configured in the motor of the dust collector. The sealing ring is usually used in the existing waterproof structure, but the sealing ring structure has the following disadvantages: when the sealing ring structure rotates along with the rotating shaft, friction loss is easily caused, and the service life of a motor of the dust collector is not long.

Disclosure of Invention

The invention aims to solve the technical problem of providing a dry-wet dual-purpose dust collector motor and a dust collector aiming at the defects of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a dry and wet dual-purpose dust collector motor comprises a stator assembly and a rotor assembly which are coaxially sleeved, wherein the rotor assembly comprises a rotating shaft for transmission, a front end cover assembly and a rear end cover assembly which are coaxially sleeved at two ends of the rotating shaft, the front end cover assembly comprises a front end cover body for connecting the rotor assembly, a movable impeller for forming suction force and a guide fan cover sleeved outside the movable impeller;

the movable impeller comprises at least three first fan blades which are spirally arranged around the center of the movable impeller, a first air outlet is formed between every two adjacent first fan blades, and the movable impeller also comprises a first air inlet which is arranged at the spiral center of each first fan blade;

a plurality of second air outlets corresponding to the first air outlets are arranged on the periphery of the air guide hood, and second air inlets coaxial with the first air inlets are also arranged on the air guide hood;

the front end cover assembly further comprises a waterproof shaft sleeve for preventing water vapor from entering the rotor assembly, the waterproof shaft sleeve is coaxially sleeved on the rotating shaft and arranged between the movable impeller and the front end cover body.

Preferably, waterproof axle sleeve includes the waterproof arch that two at least coaxial intervals set up to and be used for a plurality of waterproof arch connects the bottom surface of connecting as an organic whole, waterproof arch is ring structure, connect still be equipped with on the bottom surface be used for with waterproof axle sleeve cover is established central through-hole outside the pivot, central through-hole with the coaxial setting of waterproof arch.

Preferably, the plurality of waterproof protrusions are uniform in height;

or the heights of the waterproof bulges are different.

Preferably, a groove for accommodating the waterproof protrusion is further formed in one side, facing the movable impeller, of the front end cover body, and the groove and the waterproof protrusion are in clearance fit and are arranged in a one-to-one correspondence manner;

the waterproof shaft sleeve rotates along with the rotating shaft, and the waterproof bulge slides in the groove.

Preferably, the movable impeller further includes a front wall and a rear wall for clamping and fixing the first fan blade, the front wall and the rear wall are arranged in parallel, wherein a first air inlet side wall with a gradually reduced diameter is further convexly arranged on the front wall along a direction departing from the rear wall, and one end of the first air inlet side wall, which is far away from the front wall, is configured as the first air inlet;

the first air inlet side wall is an arc-shaped side wall which is concavely arranged towards the axial direction.

Preferably, the outer diameters of the front wall and the rear wall are the same, the first fan blades are arc-shaped fan blades which are spirally arranged along the same direction, and the number of the first fan blades is an odd number larger than 3;

one end of the first fan blade extends to the outer diameters of the front wall and the rear wall, and the adjacent first fan blade is constructed into the first air outlet on the outer diameters of the front wall and the rear wall.

Preferably, the air guide hood includes an air outlet side wall provided with a plurality of second air outlets, and a second air inlet side wall for constructing the second air inlets;

the second air inlet lateral wall is along deviating from the direction extension and the diameter convergent of air-out lateral wall, the second air inlet lateral wall is kept away from the one end structure of air-out lateral wall is the second air intake.

Preferably, the guide fan housing is sleeved outside the movable impeller in a clearance manner;

the second air inlet lateral wall still includes the baffle of ring structure, the baffle sets up the second air inlet lateral wall is kept away from the one end of air-out lateral wall, the ring internal diameter structure of baffle does the second air intake.

Preferably, the first air inlet area is larger than the second air inlet area.

Preferably, a convex edge for guiding the intake airflow is further arranged on the inner diameter of the baffle, the convex edge is perpendicular to the baffle and extends towards the direction of the movable impeller, an annular space is formed between the convex edge and the second intake sidewall, the end with the smaller diameter of the first intake sidewall is arranged in the annular space, and the intake airflow sequentially passes through the second air inlet and the first air inlet and enters the movable impeller.

Preferably, the number of the second air outlets is odd, the second air outlets are arranged on the air outlet side wall at intervals along the circumference, the width of the second air outlet is consistent with that of the first fan blade, the second air outlet and the first air outlet are axially overlapped, and the air inlet flow enters the movable impeller and then sequentially passes through the first air outlet and the second air outlet to leave the dust collector motor.

Preferably, the sum of the areas of the plurality of first air outlets is smaller than the sum of the areas of the plurality of second air outlets.

Preferably, the air outlet side wall is further obliquely provided with an air guide side plate for providing flow guidance for the air flow, the air guide side plate and the second air outlet are arranged in a one-to-one correspondence manner, and the air inlet flow leaves the dust collector motor along the direction of the air guide side plate;

an included angle smaller than 90 degrees is formed between the air guide side plate and the second air outlet, the included angles are consistent in opening direction and face the circumferential direction of the air outlet side wall.

Preferably, when the movable impeller is sleeved in the air guide fan housing, the opening direction of the included angle is opposite to the spiral direction of the first fan blade.

Preferably, the stator assembly comprises a casing, a stator core and an insulating wire frame, wherein the stator core and the insulating wire frame are coaxially sleeved in the casing, and the outer wall of the stator core is arranged in a manner of clinging to the inner wall of the casing;

the stator core positioning device comprises a stator core and a casing, and is characterized in that first positioning parts arranged at least three intervals are arranged on the outer wall of the stator core along the periphery, second positioning parts connected with the first positioning parts in a matched mode are arranged on the inner wall of the casing, the first positioning parts and the second positioning parts are arranged in a one-to-one correspondence mode, and the casing and the stator core are circumferentially positioned through the matched connection of the first positioning parts and the second positioning parts.

Preferably, one of the first positioning element and the second positioning element is a positioning groove, the other of the first positioning element and the second positioning element is a positioning protrusion arranged corresponding to the positioning groove, and the stator core and the casing are circumferentially positioned by matching the positioning groove and the positioning protrusion.

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

the heat dissipation impeller comprises at least three second blades which are spirally arranged, and the spiral centers of the second blades are coaxially arranged with the rotating shaft.

Preferably, the heat dissipation impeller further comprises a first support and a second support, the first support and the second support are used for fixing the plurality of second fan blades into a whole, and the first support and the second support clamp the second fan blades along the width direction of the second fan blades;

the second support arranged close to the stator assembly is of a circular ring structure.

Preferably, one side of the front end cover body, which is away from the waterproof shaft sleeve, is provided with a containing cavity for containing the heat dissipation impeller, one end of the casing is inserted into the containing cavity, and an air passing gap for enabling air flow to flow is formed between the casing and the side wall of the containing cavity.

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 with the casing.

Preferably, the rear cover is provided with a plurality of through holes, and the heat dissipation airflow enters the dust collector motor through the through holes;

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

the through-hole first cross the wind hole, the second cross the wind hole cross the wind clearance and communicate each other to constitute airflow channel, heat dissipation impeller rotates the back, the heat dissipation air current passes through the through-hole gets into airflow channel passes through in proper order first cross the wind hole, the second cross the wind hole, passes through at last the wind clearance leaves the dust catcher motor.

The invention also provides a dust collector which comprises the dust collector motor.

The invention has the following beneficial effects: through set up waterproof axle sleeve between movable vane wheel and front end housing body, avoid steam by the suction bearing in, waterproof axle sleeve is difficult for wearing and tearing simultaneously to effectively improve the whole life-span of motor.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a cross-sectional view showing the overall construction of a motor for a cleaner according to the present invention (solid arrows indicate a flow path of a heat dissipating air flow, and dotted arrows indicate a flow path of an intake air flow);

FIG. 2 is a perspective view of a rotor assembly of the motor of the vacuum cleaner of the present invention;

FIG. 3 is a cross-sectional structural view of the rotor assembly shown in FIG. 2;

FIG. 4 is a schematic cross-sectional view of a stator assembly of the vacuum cleaner motor of the present invention taken along a vertical axis;

FIG. 5 is a cross-sectional view of the front cover assembly of the motor of the vacuum cleaner in accordance with the present invention in conjunction with the shaft (the arrow indicates the direction of the intake airflow);

FIG. 6 is a partial enlarged view of area A in FIG. 5;

FIG. 7 is a schematic view of the structure of the impeller of the motor of the vacuum cleaner of the present invention (the arrow indicates the flow direction of the intake air flow);

FIG. 8 is a schematic cross-sectional view of the impeller of FIG. 7;

FIG. 9 is a schematic view of the structure of the air guiding hood of the vacuum cleaner motor of the present invention (the arrow indicates the flow direction of the intake air flow);

FIG. 10 is a schematic cross-sectional view of the wind-guiding cover of FIG. 9;

fig. 11 is a sectional view of the structure of the impeller and the guide fan cover (the arrow indicates the flow direction of the intake airflow).

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

The dry and wet dual-purpose motor for a vacuum cleaner, provided by the invention, is used for providing suction for the vacuum cleaner, and referring to fig. 1, the motor specifically comprises a stator assembly 10, a rotor assembly 20, a front end cover assembly 30 and a rear end cover assembly 40. The stator assembly 10 is coaxially sleeved outside the rotor assembly 20, the front end cover assembly 30 and the rear end cover assembly 40 are oppositely arranged, and the stator assembly 10 and the rotor assembly 20 are contained therein to construct a complete motor.

Referring to fig. 2, the rotor assembly 20 includes a rotating shaft 21 penetrating the center of the motor of the cleaner, and a first bearing 22, a second bearing 23, magnetic steel 25, and a heat-dissipating impeller 24 coaxially disposed with the rotating shaft 21. The first bearing 22 and the second bearing 23 are respectively disposed at two ends of the rotating shaft 21, and the heat dissipation impeller 24 and the magnetic steel 25 are disposed between the first bearing 22 and the second bearing 23. When the motor of the dust collector is electrified, 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 invention, the magnetic steel 25 is a circular ring permanent magnet, and can adapt to the working condition of high rotating speed in mechanical strength.

Referring to fig. 1, the stator assembly 10 includes a housing 11, a stator core 12 coaxially sleeved in the housing 11, and an insulating bobbin 13, wherein the stator core 12 is coaxially sleeved outside the magnetic steel 25, and the bobbin is axially disposed on two sides of the stator core 12. Further, referring to fig. 4, in the stator assembly 10, the outer wall of the stator core 12 is closely attached to the inner wall of the housing 11, so as to prolong 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 from each other. In some embodiments, at least three first positioning parts 14 arranged at intervals are circumferentially arranged on the outer wall of the stator core 12, second positioning parts 15 connected with the first positioning parts 14 in a matching manner are arranged on the inner wall of the housing 11, the first positioning parts 14 and the second positioning parts 15 are arranged in a one-to-one correspondence manner, and the housing 11 and the stator core 12 are circumferentially positioned by the matching connection of the first positioning parts 14 and the second positioning parts 15. In some embodiments, one of the first positioning element 14 and the second positioning element 15 is a positioning groove, the other one of the first positioning element and the second positioning element is a positioning protrusion corresponding to the positioning groove, and the stator core 12 and the housing 11 are circumferentially positioned by matching the positioning groove and the positioning protrusion, so that the mechanical strength of the stator assembly 10 in the circumferential direction is ensured, the stator core 12 is prevented from rotating relative to the housing 11, and the reliability of the motor is improved.

Referring to fig. 1 and 5, the front cover assembly 30 includes a front cover body 31 for connecting the rotor assembly 20, an impeller 32 for rotating at a high speed to form a suction force, a wind guiding cover 33 sleeved outside the impeller 32, and a waterproof shaft sleeve 34 for preventing water vapor from entering the rotor assembly 20. Specifically, the waterproof shaft sleeve 34 is coaxially sleeved on the rotating shaft 21 and arranged between the movable impeller 32 and the front end cover body 31, and after water vapor enters the movable impeller 32 along with air flow, the water vapor can be blocked outside the front end cover body 31 through the waterproof shaft sleeve 34, so that the water vapor is prevented from further entering the stator assembly 10 and the rotor assembly 20. Referring to a partial enlarged view of the area a, as shown in fig. 6, the waterproof shaft sleeve 34 includes at least two annular waterproof protrusions 341 and a connection bottom surface 342 for connecting the waterproof protrusions 341 into a whole, wherein the waterproof protrusions 341 are coaxially and alternately disposed, the connection bottom surface 342 is further provided with a central through hole 343 for sleeving the waterproof shaft sleeve 34 on the outer side of the rotating shaft 21, and the central through hole 343 is coaxially disposed with the waterproof protrusions 341, so that when the waterproof shaft sleeve 34 is sleeved on the rotating shaft 21 through the central through hole 343 and rotates along with the rotating shaft 21, the waterproof protrusions 341 coaxially rotate. In some embodiments, the plurality of waterproofing protrusions 341 are uniform in height; in other embodiments, the plurality of waterproofing protrusions 341 are of different heights. That is, the height of the waterproof protrusions 341 may not be limited in the present invention. In order to install the waterproof shaft sleeve 34 in a matched manner, one side of the front end cover body 31 facing the movable impeller 32 is further provided with a waterproof groove 311 for accommodating the waterproof protrusion 341, and the waterproof groove 311 is in clearance fit with the waterproof protrusion 341 and is arranged in a one-to-one correspondence manner; waterproof boss 34 is through inserting waterproof boss 341 in waterproof recess 311, and when the motor work, waterproof boss 34 rotates along with pivot 21, and waterproof boss 341 slides in waterproof recess 311 to the steam that will introduce along with the air current through waterproof boss 34 is isolated outside front end housing body 31, avoids steam to pass through front end housing body 31 and gets into in rotor subassembly 20 and stator module 10.

Further, referring to fig. 7, the movable impeller 32 includes at least three first blades 321 spirally arranged around the center of the movable 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, referring to fig. 8, the first blades 321 are arc-shaped blades spirally arranged along the same direction, and the number of the first blades 321 is an odd number greater than 3, preferably 7. The movable impeller 32 further includes a first air inlet 323 disposed at the spiral center of the first fan 321, and the air flow enters the movable impeller 32 from the first air inlet 323 and exits from the first air outlet 322 between the two first fan 321 under the high-speed rotation of the movable impeller 32. In some embodiments, the movable impeller 32 further includes a front wall 324 and a rear wall 325 for clamping and fixing the first blade 321, the front wall 324 and the rear wall 325 are arranged in parallel, and preferably, the diameters of the front wall 324 and the rear wall 325 are the same. The front wall 324 is annular, a first air inlet side wall 326 with a gradually reduced diameter is further convexly arranged on the front wall 324 in a direction away from the rear wall 325, and one end, away from the front wall 324, of the first air inlet side wall 326 is configured as a first air inlet 323. In some embodiments, the first air inlet sidewall 326 is an arc-shaped sidewall that is concave in the axial direction, i.e., the first air inlet sidewall 326 is concave in the axial direction, and the arc-shaped sidewall guides the airflow. Further, the first blade 321 is clamped between the front wall 324 and the rear wall 325, one end of the first blade 321 extends spirally to the outer diameters of the front wall 324 and the rear wall 325, and the adjacent first blade 321 is configured as the first air outlet 322 on the outer diameters of the front wall 324 and the rear wall 325.

Referring to fig. 9, the induced draft fan housing 33 is circumferentially provided with a plurality of second air outlets 331 and second air inlets 332 coaxial with the first air inlets 323. Specifically, the induced draft fan housing 33 includes an air outlet sidewall 333 provided with a plurality of second air outlets 331, and a second air inlet sidewall 334 for constructing a second air inlet 332; the second air inlet sidewall 334 extends in a direction away from the air outlet sidewall 333 and has a tapered diameter, and one end of the second air inlet sidewall 334 away from the air outlet sidewall 333 is configured as a second air inlet 332. The diversion wind shield 33 is sleeved outside the movable impeller 32 with a gap, and preferably, the first air inlet sidewall 326 and the second air inlet sidewall 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 sidewall 334 further includes a baffle 335 with a circular ring structure, the inner diameter of the baffle 335 is smaller than the diameter of the first air inlet 323, and the baffle is disposed at an end of the second air inlet sidewall 334 away from the air outlet sidewall 333, the circular ring inner diameter of the baffle 335 is configured as the second air inlet 332, and the intake airflow sequentially passes through the second air inlet 332 and the first air inlet 323 and enters the movable impeller 32. Furthermore, a convex edge 336 for guiding the intake airflow is further arranged on the inner diameter of the baffle plate 335, and the convex edge 336 extends towards the moving impeller 32, and is preferably arranged perpendicular to the baffle plate 335; an annular space 337 is defined between ledge 336 and second intake sidewall 334, and the smaller diameter end of first intake sidewall 326 is disposed within annular space 337. In this embodiment, the convex edge 336 is used to prevent the intake airflow from entering the gap between the guide wind cover 33 and the movable impeller 32 after passing through the second air inlet 332, so as to generate a squealing sound.

Further, the number of the second outlets 331 is preferably odd, and the second outlets are circumferentially spaced apart from each other on the outlet sidewall 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 axially overlapped, that is, the first air outlet 322 and the second air outlet 331 are strictly aligned in the width direction, otherwise, the intake airflow whirls inside the movable impeller 32, which reduces the suction efficiency and causes unnecessary loss. The intake airflow enters the movable impeller 32 and then leaves the vacuum cleaner motor through the first air outlet 322 and the second air outlet 331 in sequence. In some embodiments, the sum of the areas of the first air outlets 322 is smaller than the sum of the areas of the second air outlets 331, and preferably, the sum of the areas of the first air outlets 322 exceeds 10% to 20% of the sum of the areas of the second air outlets 331, so as to ensure that the intake air can smoothly flow out of the air guiding hood 33 under the high-pressure air pressure. Specifically, the area of the first air outlet 322 is the area of the arc surface corresponding to the two adjacent first blades 321 on the outer diameter of the front wall 324 or the rear wall 325; the area of the second outlet 331 is the opening area of the second outlet 331 on the outlet sidewall 333.

Furthermore, the air outlet side wall 333 is further provided with an air guide side plate 3331 for guiding the air flow, the air guide side plate 3331 and the second air outlet 331 are arranged in a one-to-one correspondence manner, and the intake air flow leaves the dust collector motor along the direction of the air guide side plate 3331. Specifically, an included angle smaller than 90 degrees is formed between the air guide side plate 3331 and the second air outlet 331, the opening directions of the included angles are consistent, and the included angles are all formed in the circumferential direction of the air outlet side wall 333. In the present invention, when the movable impeller 32 is sleeved in the diversion wind shield 33, the opening direction of the included angle is preferably opposite to the spiral direction of the first fan blade 321.

Further, in the invention, the heat generated by the motor is continuously output to the outside of the motor by arranging the heat dissipation impeller 24, so that the whole motor is ensured to be at a lower temperature level. In the present invention, a heat dissipating impeller 24 is disposed in the rotor assembly 20, particularly between the first bearing 22 and the magnetic steel 25, and the heat dissipating impeller 24 rotates at a high speed along with the rotating shaft 21 for carrying heat generated by the motor away from the motor through airflow. Further, the heat dissipation impeller 24 includes at least three second blades 241 arranged spirally, a spiral center of the second blades 241 is arranged coaxially with the rotating shaft 21, and a width of the second blades 241 extends along an axial direction of the spiral center. In some embodiments, the heat-dissipating impeller 24 further includes a first bracket 242 and a second bracket 243 for fixing the plurality of second blades 241 as a whole, and the first bracket 242 and the second bracket 243 clamp the second blades 241 in a width direction of the second blades 241. Wherein the first bracket 242 is disposed toward the first bearing 22 and the second bracket 243 is disposed proximate the magnetic steel 25 and the stator assembly 10.

One side of the front end cover body 31, which is away from the waterproof shaft sleeve 34, is provided with an accommodating cavity 312 for accommodating the heat dissipation impeller 24, one end of the casing 11 is inserted into the accommodating cavity 312, specifically, two cavities with different diameters are preferably coaxially arranged in the accommodating cavity 312, the diameter of the cavity on one side facing the casing 11 is larger than that of the cavity on one side away from the casing 11, namely, a step is arranged between the two cavities, one end of the casing 11 is arranged in the cavity with a larger diameter and is abutted against the step, and the heat dissipation impeller 24 is arranged in the cavity with a smaller diameter; further, a wind gap 313 for allowing the airflow to flow is provided between the casing 11 and the side wall of the accommodating chamber 312, that is, the wind gap 313 is configured between the side wall of the chamber with the larger diameter and the outer wall of the casing 11.

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, and the rear cover 42 is fixedly connected to the housing 11. The rear cover 42 is provided with a plurality of through holes 421, and the heat dissipation airflow enters the motor of the dust collector through the through holes 421; the rear end cover body 41 is provided with a first air passing hole 411 for passing through the heat dissipation air flow, the stator assembly 10 is provided with a second air passing hole 131 for passing through the heat dissipation air flow, in some embodiments, it is preferable that the second air passing hole 131 is arranged on the insulating bobbin 13, and at least three second air passing holes 131 are uniformly distributed on the insulating bobbin 13; the through hole 421, the first air passing hole 411, the second air passing hole 131, and the air passing gap 313 are communicated with each other to form an air flow channel, and in order to make the heat dissipating air flow enter the heat dissipating impeller 24, preferably, in the heat dissipating impeller 24, the second support 243 disposed near the stator assembly 10 is in a circular ring structure, that is, the center is empty for the air flow to pass through, and enters the second fan blade 241. When the heat dissipating impeller 24 rotates along with the rotating shaft 21, the heat dissipating airflow enters the airflow channel through the through hole 421, and referring to the solid arrow in fig. 1, the heat dissipating airflow sequentially passes through the first air passing hole 411 and the second air passing hole 131, enters the heat dissipating impeller 24, and finally leaves the vacuum cleaner motor through the air passing gap 313.

Further, the rear end cover assembly 40 further comprises a PCB board, the PBC board is electrically connected with an external power source and used for supplying power to the motor of the dust collector, and the rotor assembly 20 starts to rotate after being powered on.

The invention provides a dry and wet dual-purpose dust collector motor which is a brand new dust collector motor structure and is applied to a dust collector.

According to the dry and wet dual-purpose dust collector motor provided by the invention, after the rotor assembly 20 is electrified to work, the movable impeller 32 and the radiating impeller 24 work synchronously, and the radiating work is carried out while the suction force is provided, so that the temperature level of the whole motor system is kept at the intersection bottom during long-time running. In addition, through setting up waterproof axle sleeve 34, when avoiding steam to get into the motor inside, can effectively avoid using the ageing influence that the sealing washer brought, the whole life of extension motor.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A dry and wet dual-purpose dust collector motor comprises a stator assembly (10) and a rotor assembly (20) which are coaxially sleeved, wherein the rotor assembly (20) comprises a rotating shaft (21) used for transmission, and is characterized by further comprising a front end cover assembly (30) and a rear end cover assembly (40) which are coaxially sleeved at two ends of the rotating shaft (21), wherein the front end cover assembly (30) comprises a front end cover body (31) used for connecting the rotor assembly (20), an movable impeller (32) used for forming suction force, and a diversion fan cover (33) sleeved outside the movable impeller (32);

the movable impeller (32) comprises at least three first fan blades (321) which are spirally arranged around the center of the movable impeller (32), a first air outlet (322) is formed between every two adjacent first fan blades (321), and the movable impeller (32) further comprises a first air inlet (323) which is arranged at the spiral center of the first fan blades (321);

a plurality of second air outlets (331) corresponding to the first air outlets (322) are arranged on the periphery of the air guide hood (33), and a second air inlet (332) coaxial with the first air inlet (323) is also arranged;

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 arranged between the movable impeller (32) and the front end cover body (31).

2. The wet and dry vacuum cleaner motor according to claim 1, wherein 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 a whole, the waterproof protrusions (341) are annular structures, a central through hole (343) for sleeving the waterproof shaft sleeve (34) outside the rotating shaft (21) is further arranged on the connecting bottom surface (342), and the central through hole (343) and the waterproof protrusions (341) are coaxially arranged.

3. The wet and dry vacuum cleaner motor according to claim 2, wherein a plurality of the waterproof protrusions (341) are uniform in height;

or the heights of the waterproof bulges (341) are different.

4. The wet and dry vacuum cleaner motor according to claim 2, wherein a waterproof groove (311) for accommodating the waterproof protrusion (341) is further provided on one side of the front cover body (31) facing the movable impeller (32), and the waterproof groove (311) is in clearance fit with the waterproof protrusion (341) and is arranged in a one-to-one correspondence;

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 dust collector motor according to claim 1, wherein the movable impeller (32) further comprises 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, wherein a first air inlet side wall (326) with a gradually reduced diameter is further convexly arranged on the front wall (324) along a direction departing from the rear wall (325), and one end of the first air inlet side wall (326) far 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 which is concave towards the axial direction.

6. The wet and dry vacuum cleaner motor according to claim 5, wherein the outer diameters of the front wall (324) and the rear wall (325) are the same, the first blades (321) are arc-shaped blades spirally arranged along the same direction, and the number of the first blades (321) is an odd number larger than 3;

one end of the first fan blade (321) extends to the outer diameters 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 diameters of the front wall (324) and the rear wall (325).

7. The wet and dry vacuum cleaner motor according to claim 6, wherein the wind guide hood (33) comprises a wind outlet sidewall (333) provided with a plurality of second wind outlets (331), and a second wind inlet sidewall (334) for forming the second wind inlets (332);

the second air inlet side wall (334) extends along the direction deviating from the air outlet side wall (333) and has a gradually reduced diameter, and one end, far away from the air outlet side wall (333), of the second air inlet side wall (334) is constructed into the second air inlet (332).

8. The wet and dry vacuum cleaner motor as claimed in claim 7, wherein the air guide hood (33) is sleeved outside the impeller (32) with a gap;

the second air inlet side wall (334) further comprises a baffle (335) of a circular ring structure, the baffle (335) is arranged at one end, far away from the air outlet side wall (333), of the second air inlet side wall (334), and the inner diameter of the circular ring of the baffle (335) is constructed into the second air inlet (332).

9. The wet and dry vacuum cleaner motor according to claim 8, wherein the first air inlet (323) has a larger area than the second air inlet (332).

10. The wet and dry vacuum cleaner motor as claimed in claim 9, wherein a protruding edge (336) for guiding the intake airflow is further disposed on an inner diameter of the baffle plate (335), the protruding edge (336) is perpendicular to the baffle plate (335) and extends toward the impeller (32), an annular space (337) is configured between the protruding edge (336) and the second intake sidewall (334), an end of the first intake sidewall (326) with a smaller diameter is disposed in the annular space (337), and the intake airflow passes through the second intake opening (332) and the first intake opening (323) in sequence and enters the impeller (32).

11. The wet and dry vacuum cleaner motor according to claim 10, wherein the number of the second air outlets (331) is odd, the second air outlets are circumferentially spaced on 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), the second air outlet (331) and the first air outlet (322) are axially overlapped, and the intake air flow enters the movable impeller (32) and then sequentially passes through the first air outlet (322) and the second air outlet (331) to leave the vacuum cleaner motor.

12. The wet and dry vacuum cleaner motor as claimed in claim 11, wherein the sum of the areas of the first air outlets (322) is smaller than the sum of the areas of the second air outlets (331).

13. The wet and dry vacuum cleaner motor as claimed in claim 12, wherein the air outlet side wall (333) is further provided with an air guide side plate (3331) for providing flow guidance for the air flow, the air guide side plate (3331) and the second air outlet (331) are arranged in a one-to-one correspondence, and the intake air flow leaves the vacuum cleaner motor along the air guide side plate (3331);

an included angle smaller than 90 degrees exists between the air guide side plate (3331) and the second air outlet (331), the included angles are consistent in opening direction and face the circumferential direction of the air outlet side wall (333).

14. The wet and dry vacuum cleaner motor as claimed in claim 13, wherein when the impeller (32) is sleeved in the air guide hood (33), the opening direction of the included angle is opposite to the spiral direction of the first fan blade (321).

15. The wet and dry dust collector motor according to claim 1, wherein the stator assembly (10) comprises a casing (11), a stator core (12) and an insulating bobbin (13) coaxially sleeved in the casing (11), and an outer wall of the stator core (12) is arranged to be closely attached to an inner wall of the casing (11);

first setting element (14) that the periphery set up along being equipped with at least three interval on the outer wall of stator core (12), be equipped with on casing (11) inner wall with second setting element (15) that first setting element (14) cooperation is connected, first setting element (14) with second setting element (15) one-to-one sets up, through first setting element (14) with the cooperation of second setting element (15) is connected, makes casing (11) with stator core (12) are fixed a position in circumference.

16. The wet and dry vacuum cleaner motor according to claim 15, wherein one of the first positioning element (14) and the second positioning element (15) is a positioning groove, the other one of the first positioning element and the second positioning element is a positioning protrusion 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.

17. The wet and dry vacuum cleaner motor according to claim 15, wherein the rotor assembly (20) further comprises a first bearing (22) and a second bearing (23) respectively disposed 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 blades (241) which are spirally arranged, and the spiral centers of the second blades (241) are coaxially arranged with the rotating shaft (21).

18. The wet and dry vacuum cleaner motor according to claim 17, wherein the heat dissipating impeller (24) further comprises a first bracket (242) and a second bracket (243) for fixing the second blades (241) as a whole, and the first bracket (242) and the second bracket (243) clamp the second blades (241) in a width direction of the second blades (241);

the second support (243) arranged close to the stator assembly (10) is of a circular ring structure.

19. The wet and dry vacuum cleaner motor according to claim 18, wherein a receiving cavity (312) for receiving the heat dissipating impeller (24) is formed in a side of the front cover body (31) facing away from the waterproof bushing (34), one end of the housing (11) is inserted into the receiving cavity (312), and a wind passing gap (313) for allowing airflow to pass is formed between the housing (11) and a side wall of the receiving cavity (312).

20. The wet and dry vacuum cleaner motor according to claim 19, wherein the rear cover assembly (40) comprises a rear cover body (41) coaxially sleeved outside the second bearing (23), and a rear cover (42) sleeved outside the rear cover body (41), wherein the rear cover (42) is fixedly connected with the housing (11).

21. The wet and dry vacuum cleaner motor as claimed in claim 20, wherein the rear cover (42) is opened with a plurality of through holes (421), and the heat dissipating air flow enters the vacuum cleaner motor through the through holes (421);

the rear end cover body (41) is provided with a first air passing hole (411) for the heat dissipation air flow to pass through, and the stator assembly (10) is provided with a second air passing hole (131) for the heat dissipation air flow to pass through;

the through hole (421), first hole (411) of crossing wind, second hole (412) of crossing wind gap (313) communicate each other to constitute airflow channel, heat dissipation impeller (24) rotate the back, the heat dissipation air current passes through hole (421) gets into airflow channel passes through in proper order first hole (411) of crossing wind, second hole (131) of crossing wind, passes through at last gap (313) of crossing wind leaves the dust catcher motor.

22. A vacuum cleaner comprising a vacuum cleaner motor according to any one of claims 1-21.