CN218243256U

CN218243256U - Anti-interference and good motor that dispels heat

Info

Publication number: CN218243256U
Application number: CN202222215375.2U
Authority: CN
Inventors: 王志龙; 胡春元; 王浩
Original assignee: Dongguan Jilaisheng Motor Co ltd
Current assignee: Dongguan Jilaisheng Motor Co ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2023-01-06
Anticipated expiration: 2032-08-22

Abstract

The utility model belongs to the technical field of the motor technique and specifically relates to indicate an anti-interference and good motor that dispels heat, include: the stator assembly comprises an insulating bracket, a stator coil and a stator core with good magnetic conductivity and poor electric conductivity; the rotor assembly comprises a movable impeller, a magnetic ring and a rotating shaft; the conductive and non-magnetic shell comprises a sleeve, an inner core and a plurality of flow deflectors, wherein the inner wall of the sleeve, the outer side wall of the inner core and two adjacent flow deflectors form a guide air channel in a surrounding manner, a plurality of notch grooves are formed in a stator mounting chamber, and the guide air channel is communicated with the notch grooves; the bearing assembly is arranged in the bearing chamber, and the rotating shaft is rotatably connected with the shell through the bearing assembly. The utility model has the advantages of reasonable design, interference killing feature and heat dispersion are good, can prolong the life of motor for the job stabilization nature of motor is good.

Description

Anti-interference and good motor that dispels heat

Technical Field

The utility model belongs to the technical field of the motor technique and specifically relates to indicate an anti-interference and good motor that dispels heat.

Background

The motor is an electromechanical device which converts electric energy into mechanical energy according to the electromagnetic induction principle. The motor is the core component of hair-dryer, and current high-speed motor for hair-dryer, though it has the advantage of small volume and high rotational speed, under high rotational speed, the motor is at the energy conversion in-process, and stator module generally can produce the heat, if these heats can not in time discharge to the outside, leads to the motor high temperature easily, even burns out, influences the life of motor. In addition, because of poor electromagnetic shielding performance and interference resistance, the high-speed motor can generate electromagnetic radiation or be easily interfered by an external magnetic field during operation. Although the prior art has a plurality of heat dissipation motors and anti-interference motors, the performance pertinence of the heat dissipation motors is strong, the heat dissipation effect of the heat dissipation motors is good, the anti-interference performance is poor, and the anti-interference performance of the anti-interference motors is strong and the heat dissipation effect is poor. Certainly, the prior art also has a heat dissipation and anti-interference motor, for example, in the patent document with application number 202123268505.0, the anti-interference and heat dissipation functions are realized by heat dissipation fins and aluminum foil. The heat dissipation and anti-interference methods are many, the advantages and the disadvantages of the heat dissipation and anti-interference methods are different, and the problem needed to be faced in the field is how to reasonably design the structure of the motor on the basis of not additionally increasing the structure of the motor so as to achieve better heat dissipation and anti-interference performance.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide an anti-interference and good motor dispels the heat.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides an anti-interference and good motor that dispels heat which includes:

the stator assembly comprises an insulating support, a stator coil and a stator core with good magnetic conductivity and poor electric conductivity, the stator core is sleeved outside the insulating support, a plurality of tooth parts of the stator core are respectively embedded in a plurality of winding parts of the insulating support, and each winding part of the insulating support is wound with the stator coil;

the rotor assembly comprises a movable impeller, a magnetic ring and a rotating shaft, the movable impeller is sleeved at one end of the rotating shaft, the magnetic ring is sleeved at the other end of the rotating shaft, the magnetic ring is positioned in the inner cavity of the insulating support, and a rotating gap is formed between the outer side wall of the magnetic ring and the inner cavity wall of the insulating support;

the shell is conductive and non-magnetic, and comprises a sleeve, an inner core and a plurality of flow deflectors, wherein the inner core is coaxially arranged with the sleeve, the flow deflectors are connected between the inner wall of the sleeve and the outer side wall of the inner core, the flow deflectors are distributed in an annular array along the central axis of the inner core, the inner wall of the sleeve, the outer side wall of the inner core and two adjacent flow deflectors form a flow guide channel, the inner core is provided with a bearing chamber and a stator installation chamber communicated with the bearing chamber, one end, close to the bearing chamber, of the inner core and the inner wall of the sleeve form a rotating chamber, a movable impeller is rotatably arranged in the rotating chamber, a plurality of notch grooves are formed in the side wall of the stator installation chamber, the flow guide channel is communicated with the notch grooves, a stator assembly is arranged in the stator installation chamber, and the outer side wall of the stator core is abutted against the inner wall of the stator installation chamber;

the bearing assembly is arranged in the bearing chamber, and the rotating shaft is rotatably connected with the shell through the bearing assembly.

Further, the axial length of the cutaway groove is not less than the axial length of the stator core.

Furthermore, the magnetic ring and the stator core are arranged in a staggered mode in the axial direction.

Further, a plurality of the cutaway slots are disposed in an annular array about a central axis of the stator mounting chamber.

Furthermore, the outer side wall of one end, away from the bearing chamber, of the insulating support is provided with a supporting plate, and the supporting plate is abutted to one end of the stator core.

Furtherly, the layer board epirelief is equipped with a plurality of locating pieces, and stator core's one end is concave to be equipped with a plurality of constant head tanks, a plurality of locating pieces respectively with the unsmooth adaptation of a plurality of constant head tanks.

Furthermore, the bearing assembly comprises a bearing arranged in the bearing chamber, and an inner ring of the bearing is sleeved outside the rotating shaft.

Furthermore, the bearing assembly further comprises two prepressing parts, the number of the bearings is two, the prepressing parts are clamped between the two bearings, the prepressing parts are used for applying prepressing force to the two bearings, and the two bearings are respectively located at two ends of the bearing chamber.

Further, the pre-pressing piece comprises a spring and two gaskets, wherein the spring and the two gaskets are sleeved outside the rotating shaft, the two gaskets are located at two ends of the spring respectively, and the gaskets are clamped between an outer ring of the bearing and the end portion of the spring.

Furthermore, one end of the bearing chamber, which is far away from the stator mounting chamber, is provided with a limit ring, and the limit ring is used for abutting against the outer ring of the bearing.

The utility model has the advantages that: in the in-service use, except that stator core's part shows inside and outside the breach groove, stator module is located the stator installation room, and the stator installation room can be installed fixedly to stator module, because the stator installation room surrounds the stator module annular basically, stator core's magnetic conductivity can be good and electric conductive property is poor, and the shell can electrically conduct and not lead the magnetic, so the shell plays fine electromagnetic shield effect. This motor circular telegram back, the relative stator module of rotor subassembly rotates, the rotatory back of movable vane wheel, the air gets into and forms the air current from telescopic fresh air inlet, the air current is after the guide with wind-guiding way is accelerated via the water conservancy diversion piece, the air current can be outdoor through the stator installation, because breach groove and wind-guiding way intercommunication, and there is pressure differential, so can have some air current to get into the wind-guiding way from the breach groove, stator core's heat can transmit for this air current, and discharge via telescopic air outlet, in order to play the radiating effect of given subassembly. The utility model has the advantages of reasonable design, interference killing feature and heat dispersion are good, can prolong the life of motor for the job stabilization nature of motor is good.

Drawings

Fig. 1 is a sectional view of the present invention.

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is a schematic perspective view of the housing of the present invention.

Fig. 4 is a schematic perspective view of another view angle of the housing of the present invention.

Fig. 5 is a schematic perspective view of the stator core according to the present invention.

Description of reference numerals:

1. a stator assembly; 11. an insulating support; 12. a stator coil; 13. a stator core; 14. a protrusion; 15. a support plate; 16. positioning a block; 17. positioning a groove; 18. a tooth portion; 2. a rotor assembly; 21. a movable impeller; 22. a magnetic ring; 23. a rotating shaft; 3. a housing; 31. a sleeve; 32. an inner core; 33. a flow deflector; 34. an air guide duct; 35. a bearing chamber; 36. a stator installation chamber; 37. a rotating chamber; 38. a notch groove; 4. a bearing assembly; 41. a bearing; 42. pre-pressing the piece; 43. a spring; 44. a gasket; 5. a limiting ring; 6. and (6) inner chamfering.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

As shown in fig. 1 to 5, the utility model provides a pair of anti-interference and good motor that dispels heat, it includes:

the stator assembly 1 comprises an insulating support 11, a stator coil 12 and a stator core 13 with good magnetic conductivity and poor electric conductivity, wherein the stator core 13 is sleeved outside the insulating support 11, the outer side wall of the stator core 13 is provided with a plurality of protrusions 14, a plurality of tooth parts 18 positioned on the inner wall of the stator core 13 are respectively embedded in a plurality of winding parts of the insulating support 11, and the stator coil 12 is wound on each winding part of the insulating support 11;

the rotor assembly 2 comprises a movable impeller 21, a magnetic ring 22 and a rotating shaft 23, wherein the movable impeller 21 is sleeved at one end of the rotating shaft 23, the magnetic ring 22 is sleeved at the other end of the rotating shaft 23, the magnetic ring 22 is positioned in an inner cavity of the insulating support 11, a rotating gap is formed between the outer side wall of the magnetic ring 22 and the inner cavity wall of the insulating support 11, and the movable impeller 21 is in interference fit with the rotating shaft 23;

the shell 3 is conductive and non-magnetic, and includes a sleeve 31, an inner core 32 located in the sleeve 31 and coaxially disposed with the sleeve 31, and a plurality of guide vanes 33 having curved surfaces connected between an inner wall of the sleeve 31 and an outer wall of the inner core 32, where the plurality of guide vanes 33 are distributed in an annular array along a central axis of the inner core 32, an inner wall of the sleeve 31, an outer wall of the inner core 32, and two adjacent guide vanes 33 are enclosed to form a guide air duct 34, the inner core 32 is provided with a bearing chamber 35 and a stator installation chamber 36 communicated with the bearing chamber 35, one end of the inner core 32 close to the bearing chamber 35 and an inner wall of the sleeve 31 are enclosed to form a rotation chamber 37, the movable impeller 21 is rotatably disposed in the rotation chamber 37, a plurality of notch grooves 38 are disposed on a sidewall of the stator installation chamber 36, the guide air duct 34 is communicated with the notch grooves 38, the stator assembly 1 is installed in the stator installation chamber 36, an outer wall of the stator core 13 abuts against the inner wall of the stator installation chamber 36, the plurality of the protrusions 14 respectively protrude into the plurality of notch grooves 38, one end of the sleeve 31 close to the sleeve 21 is an air inlet of the sleeve 31, and one end of the sleeve 31 away from the movable impeller 21 is an air outlet of the movable impeller 31;

the bearing assembly 4, the bearing assembly 4 is installed in the bearing chamber 35, and the rotating shaft 23 is rotatably connected with the housing 3 through the bearing assembly 4.

In actual use, except that the protrusion 14 on the stator core 13 is exposed in the notch groove 38, the stator assembly 1 is located in the stator installation chamber 36, the stator installation chamber 36 can install and fix the stator assembly 1, the stator installation chamber 36 basically surrounds the stator assembly 1 in an annular mode, the stator core 13 is good in magnetic conductivity and poor in electric conductivity, the shell 3 can conduct electricity and does not conduct electricity, and therefore the shell 3 plays a good electromagnetic shielding role. After the motor is powered on, the rotor assembly 2 rotates relative to the stator assembly 1, after the movable impeller 21 rotates, air enters from the air inlet hole of the sleeve 31 and forms airflow, after the airflow is accelerated and guided through the guide vanes 33 and the air guide channel 34, the airflow is discharged through the air outlet of the sleeve 31, the airflow can pass through the outside of the stator mounting chamber 36 in the flowing process, due to the fact that the notch groove 38 is communicated with the air guide channel 34 and pressure difference exists, a part of the airflow enters the air guide channel 34 from the notch groove 38, heat of the stator core 13 can be transferred to the airflow and is discharged through the air outlet of the sleeve 31, and the radiating effect of the given component 1 is achieved. The utility model has the advantages of reasonable design, interference killing feature and heat dispersion are good, can prolong the life of motor for the job stabilization nature of motor is good.

In order to further improve the anti-interference performance, a plastic sleeve is arranged outside the stator core 13, and the stator core 13 is integrally encapsulated by the plastic sleeve through a plastic encapsulation process.

In the present embodiment, the axial length of the cutaway groove 38 is not smaller than the axial length of the stator core 13; preferably, the axial length of the cutaway groove 38 is greater than the axial length of the projection 14, and the axial length of the projection 14 is equal to the axial length of the stator core 13. This structural design has increased the heat dissipation space between breach groove 38 and the arch 14, and is better to stator core 13 and stator module 1 radiating effect.

In this embodiment, the magnetic ring 22 and the stator core 13 are disposed in a staggered manner in the axial direction, that is, one end of the magnetic ring 22 protrudes out of one end of the stator core 13, and the other end of the stator core 13 protrudes out of the other end of the magnetic ring 22.

In this embodiment, a plurality of notch grooves 38 are disposed around the central axis of stator installation chamber 36 in an annular array, which is favorable for heat dissipation of stator core 13 and stator assembly 1, and has a good heat dissipation effect.

In this embodiment, the outer side wall of the end of the insulating support 11 away from the bearing chamber 35 is provided with a supporting plate 15, and the supporting plate 15 abuts against one end of the stator core 13. The layer board 15 can contradict stator core 13, has improved stator core 13 and has installed position accuracy and stability on insulating support 11.

In this embodiment, the supporting plate 15 is provided with a plurality of positioning blocks 16 in a protruding manner, one end of the stator core 13 is provided with a plurality of positioning grooves 17 in a recessed manner, and the plurality of positioning blocks 16 are respectively matched with the plurality of positioning grooves 17 in a concave-convex manner. Through a plurality of locating pieces 16 respectively with the unsmooth cooperation of a plurality of constant head tanks 17, play the effect of location to stator core 13, further improved stator core 13 and installed position accuracy and stability on insulating support 11.

In this embodiment, the bearing assembly 4 includes a bearing 41 installed in the bearing chamber 35, and an inner ring of the bearing 41 is sleeved outside the rotating shaft 23, so that the rotating shaft 23 rotates more smoothly and stably.

In this embodiment, the bearing assembly 4 further includes two pre-pressing members 42, the two bearings 41 are provided, the pre-pressing members 42 are sandwiched between the two bearings 41, the pre-pressing members 42 are used for applying pre-pressing force to the two bearings 41, and the two bearings 41 are respectively located at two ends of the bearing chamber 35. In practical applications, the preload member 42 applies a suitable axial preload to the two bearings 41 to improve the service life of the bearings 41 and reduce the noise of the bearings 41.

In this embodiment, the pre-pressing member 42 includes a spring 43 and two washers 44, both of which are sleeved outside the rotating shaft 23, the two washers 44 are respectively located at two ends of the spring 43, and the washers 44 are clamped between the outer ring of the bearing 41 and the end of the spring 43. The two ends of the spring 43 exert a suitable axial pre-pressure on the outer ring of the bearing 41 via respective spacers 44; the spacer 44 eliminates axial tolerance play and reduces noise generation.

In this embodiment, a limiting ring 5 is disposed at an end of the bearing chamber 35 away from the stator mounting chamber 36, and the limiting ring 5 is configured to abut against an outer ring of the bearing 41. The limiting ring 5 is abutted against the outer ring of a bearing 41 to limit the position of the bearing 41 installed in the bearing chamber 35, so that the position accuracy and stability of the bearing 41 installed in the bearing chamber 35 are improved.

Specifically, an end of the stator mounting chamber 36 away from the bearing chamber 35 is provided with an inner chamfer 6, so that one end of the stator mounting chamber 36 is flared, and the stator assembly 1 is convenient to assemble in the stator mounting chamber 36.

All the technical features in the embodiment can be freely combined according to actual needs.

The above-mentioned embodiment is the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the prerequisite that does not deviate from this technical scheme design.

Claims

1. The utility model provides an anti-interference and good motor that dispels heat which characterized in that: the method comprises the following steps:

the rotor assembly comprises a movable impeller, a magnetic ring and a rotating shaft, the movable impeller is sleeved at one end of the rotating shaft, the magnetic ring is sleeved at the other end of the rotating shaft, the magnetic ring is positioned in an inner cavity of the insulating support, and a rotating gap is formed between the outer side wall of the magnetic ring and the inner cavity wall of the insulating support;

the shell is conductive and non-conductive, and comprises a sleeve, an inner core and a plurality of flow deflectors, wherein the inner core is coaxially arranged with the sleeve, the flow deflectors are connected between the inner wall of the sleeve and the outer side wall of the inner core, the flow deflectors are distributed in an annular array along the central axis of the inner core, the inner wall of the sleeve, the outer side wall of the inner core and two adjacent flow deflectors form a flow guiding channel, the inner core is provided with a bearing chamber and a stator installation chamber communicated with the bearing chamber, one end, close to the bearing chamber, of the inner core and the inner wall of the sleeve form a rotating chamber, a movable impeller is rotatably arranged in the rotating chamber, a plurality of notch grooves are formed in the side wall of the stator installation chamber, the flow guiding channel is communicated with the notch grooves, a stator assembly is arranged in the stator installation chamber, and the outer side wall of the stator core is abutted against the inner wall of the stator installation chamber;

2. The anti-interference and good heat dissipation motor according to claim 1, characterized in that: the axial length of the notch groove is not less than the axial length of the stator core.

3. The anti-interference and good heat dissipation motor according to claim 1, characterized in that: the magnetic ring and the stator iron core are arranged in a staggered mode in the axial direction.

4. The anti-interference and good heat dissipation motor according to claim 1, characterized in that: a plurality of the cutaway slots are arranged in an annular array about a central axis of the stator mounting chamber.

5. The anti-interference and good heat dissipation motor according to claim 1, characterized in that: the one end lateral wall that bearing room was kept away from to insulating support is provided with the layer board, and the layer board is contradicted with stator core's one end.

6. The anti-interference and good-heat-dissipation motor according to claim 5, characterized in that: the layer board epirelief is equipped with a plurality of locating pieces, and stator core's one end is concave to be equipped with a plurality of constant head tanks, a plurality of locating pieces respectively with the unsmooth adaptation of a plurality of constant head tanks.

7. The anti-interference and good-heat-dissipation motor according to claim 1, characterized in that: the bearing assembly comprises a bearing arranged in a bearing chamber, and an inner ring of the bearing is sleeved outside the rotating shaft.

8. The anti-interference and good-heat-dissipation motor according to claim 7, wherein: the bearing assembly further comprises two prepressing parts, the number of the bearings is two, the prepressing parts are clamped between the two bearings, the prepressing parts are used for applying prepressing force to the two bearings, and the two bearings are located at two ends of the bearing chamber respectively.

9. The anti-interference and good heat dissipation motor according to claim 7, characterized in that: the prepressing piece comprises a spring and two gaskets, wherein the spring and the two gaskets are sleeved outside the rotating shaft, the two gaskets are respectively positioned at two ends of the spring, and the gaskets are clamped between an outer ring of the bearing and the end part of the spring.

10. The anti-interference and good heat dissipation motor according to claim 7, characterized in that: the one end that the stator installation room was kept away from to the bearing room is provided with the spacing ring, and the spacing ring is used for conflicting the outer lane of bearing.