CN215498461U - Air-cooled permanent magnet synchronous motor - Google Patents
Air-cooled permanent magnet synchronous motor Download PDFInfo
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- CN215498461U CN215498461U CN202121643680.0U CN202121643680U CN215498461U CN 215498461 U CN215498461 U CN 215498461U CN 202121643680 U CN202121643680 U CN 202121643680U CN 215498461 U CN215498461 U CN 215498461U
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- cooling air
- permanent magnet
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- cylinder
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 95
- 238000003466 welding Methods 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses an air-cooled permanent magnet synchronous motor, which comprises a motor shell, a motor stator and a motor permanent magnet rotor, wherein the motor permanent magnet rotor is integrally installed with a motor shaft; the motor cylinder is formed by welding plates, the rear cover of the motor is provided with a cooling air inlet, the motor cylinder close to one side of the front cover of the motor is provided with a cylinder cooling air outlet in the circumferential direction, and the cylinder cooling air outlet is positioned at the periphery of the cooling air inlet; the utility model has compact structure, good cooling effect of the motor and low manufacturing cost.
Description
Technical Field
The utility model belongs to the technical field of permanent magnet synchronization, and particularly relates to an air-cooled permanent magnet synchronous motor.
Background
The permanent magnet synchronous motor has the characteristics of small volume, high overall operation efficiency, high power factor, large starting torque, good force performance index, low temperature rise and the like. Compared with the traditional motor, the permanent magnet synchronous motor adopts the permanent magnet excitation in the rotor, can avoid exciting current to produce the magnetic field and simultaneously cause the excitation loss, but the permanent magnet synchronous motor has the following defects: forced heat dissipation measures need to be taken to take away heat inside the permanent magnet synchronous motor so as to avoid demagnetization caused by the rotor permanent magnet in a long-term high-temperature working environment.
The existing air-cooled permanent magnet synchronous motor generally adopts a casting shell, a cooling air channel is cast on the shell, and then air is sent into the air channel for cooling through a fan positioned at the end part of a rotating shaft. This cooling air duct structure only can realize cooling off motor stator surface, can't realize effectual wind channel cooling effect to rotor and stator inside, and not only the radiating effect is poor, and is with high costs moreover, consequently is necessary to improve current air-cooled PMSM structure.
Disclosure of Invention
In view of this, the present invention provides an air-cooled permanent magnet synchronous motor, which has a compact structure, a good cooling effect, and a low manufacturing cost.
The technical scheme adopted by the utility model is as follows:
an air-cooled permanent magnet synchronous motor comprises a motor shell, a motor stator and a motor permanent magnet rotor which is integrally installed with a motor shaft, wherein the motor shell comprises a motor front cover, a motor barrel and a motor rear cover which are integrally installed; the motor cylinder is formed by welding plates, the motor rear cover is provided with a cooling air inlet, a cylinder cooling air outlet is formed in the circumferential direction of the motor cylinder close to one side of the motor front cover, and the cylinder cooling air outlet is positioned on the periphery of the cooling air inlet; and meanwhile, the motor stator is provided with an internal cooling air channel which is respectively communicated with the cooling air inlet and the barrel cooling air outlet.
Preferably, the motor stator comprises a plurality of stator segment units which are spliced into a whole, and the internal cooling air duct is formed between adjacent stator segment units.
Preferably, the cooling air inlet comprises a plurality of cooling air through holes in the central area of the rear cover of the motor.
Preferably, a plurality of front cover cooling air outlets distributed at intervals are arranged on the circumferential direction of the front cover of the motor, and each front cover cooling air outlet is communicated with the cooling air inlet through the internal cooling air duct.
Preferably, a plurality of barrel cooling air outlet sections distributed at intervals are arranged in the circumferential direction of the motor barrel, and each barrel cooling air outlet section comprises a plurality of cooling air through holes.
Preferably, a cooling fan is arranged at the end part of the motor permanent magnet rotor close to one side of the motor rear cover.
Preferably, the cooling fan comprises straight-bladed centrifugal fans, each of which is circumferentially locked in position by locking tabs.
Preferably, a connecting flange used for being fixedly installed and connected with the motor front cover is welded on the periphery of the motor barrel body close to one side of the motor front cover, a hoisting column is welded on the top of the motor barrel body, and meanwhile, a wire outlet hole used for leading out a wire harness is formed in the wire outlet hole.
Preferably, the motor rear cover is sleeved on the periphery of the motor barrel and locked by a fastener.
Preferably, the motor shaft adopts a motor permanent magnet rotor extension shaft close to one side of the motor front cover, and the motor permanent magnet rotor extension shaft can be relatively rotatably installed on the motor front cover.
According to the utility model, the motor cylinder formed by welding plates is arranged, the cooling air inlet is arranged on the rear cover of the motor, the cylinder cooling air outlet is arranged on the motor cylinder close to one side of the front cover of the motor in the circumferential direction, the motor stator is provided with the internal cooling air channel respectively communicated with the cooling air inlet and the cylinder cooling air outlet, and thus a cooling channel structure with a high-efficiency heat dissipation effect is formed.
Drawings
FIG. 1 is a schematic view of an air-cooled PMSM according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 after being rotated by a certain angle;
FIG. 3 is a schematic view of the front end cap of FIG. 1 after being hidden;
FIG. 4 is a cross-sectional view of an air-cooled PMSM according to an embodiment of the present invention;
FIG. 5 is an exploded view of an air-cooled PMSM according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a stator of an electric motor according to an embodiment of the present invention.
Detailed Description
The embodiment of the utility model discloses an air-cooled permanent magnet synchronous motor, which comprises a motor shell, a motor stator and a motor permanent magnet rotor, wherein the motor permanent magnet rotor is integrally installed with a motor shaft; the motor cylinder is formed by welding plates, the rear cover of the motor is provided with a cooling air inlet, the motor cylinder close to one side of the front cover of the motor is provided with a cylinder cooling air outlet in the circumferential direction, and the cylinder cooling air outlet is positioned at the periphery of the cooling air inlet; and the motor stator is provided with an internal cooling air channel which is respectively communicated with the cooling air inlet and the cooling air outlet of the cylinder body.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, an air-cooled permanent magnet synchronous motor includes a motor housing, a motor stator 10, and a motor permanent magnet rotor 20 integrally mounted with a motor shaft 21, the motor housing includes a motor front cover 31, a motor cylinder 32, and a motor rear cover 33 integrally mounted, the motor stator 10 is located at the periphery of the motor permanent magnet rotor 20 and is press-fitted in the motor cylinder 32; preferably, in order to facilitate convenience and compact installation effect, in the present embodiment, a connection flange 34 for fixedly installing and connecting with the motor front cover 31 is welded around the motor cylinder 32 near one side of the motor front cover 31, and a hoisting column 41 is welded on the top of the motor cylinder 32, and is provided with an outlet hole 42 for leading out a wiring harness (not shown); the motor rear cover 33 is sleeved on the periphery of the motor cylinder 32 and is locked by a fastener; the motor shaft 21 adopts a motor permanent magnet rotor extension shaft close to one side of the motor front cover 31, and the motor permanent magnet rotor extension shaft can be relatively rotatably arranged on the motor front cover 31, so that the compact structure and the heat dissipation effect of the motor are more facilitated; of course, in other embodiments, the motor shaft may be relatively rotatably mounted on the motor front cover 31 and the motor rear cover 33 through bearings, which is not particularly limited in this embodiment;
in the present embodiment, the motor cylinder 32 is formed by welding plates, the motor rear cover 33 is provided with a cooling air inlet 51, the motor cylinder 32 near the motor front cover 31 is provided with a cylinder cooling air outlet 52 in the circumferential direction, and the cylinder cooling air outlet 52 is located at the periphery of the cooling air inlet 51; meanwhile, the motor stator 10 is provided with an internal cooling air channel 53 which is respectively communicated with the cooling air inlet 51 and the cylinder cooling air outlet 52;
preferably, in the present embodiment, the motor stator 10 includes a plurality of stator segment units 10a that are spliced into a whole, and an internal cooling air duct 53 is formed between adjacent stator segment units 10a, which is beneficial to the efficient heat dissipation effect on the inside of the stator 10; the cooling air inlet 51 comprises a plurality of cooling air through holes 51a positioned in the central area of the rear cover of the motor, so that cooling air can be directly sucked from the central area of the rear cover of the motor quickly; preferably, in the present embodiment, the plurality of permanent magnet steels 20a of the motor permanent magnet rotor 20 are uniformly attached to the periphery of the rotor core 20b at intervals, and a gap 20c is formed between adjacent permanent magnet steels 20a, which is further beneficial to the heat dissipation effect;
preferably, in the present embodiment, the motor front cover 31 is provided with a plurality of front cover cooling air outlets 54 distributed at intervals in the circumferential direction, the front cover cooling air outlets 54 are located at the periphery of the cooling air inlet 51, and each front cover cooling air outlet 54 is communicated with the cooling air inlet 51 through the internal cooling air duct 53, so that the cooling path of the present embodiment can be further expanded;
preferably, in order to facilitate the heat dissipation uniformity of the present embodiment and ensure the sealing installation effect of the motor cylinder 32, in the present embodiment, a plurality of cylinder cooling air outlet sections 52a are arranged in the circumferential direction of the motor cylinder 32, and particularly, in the present embodiment, 4 cylinder cooling air outlet sections 52a (which are staggered from the connecting flange 34 and further facilitate the heat dissipation effect) are adopted, and each cylinder cooling air outlet section 52a includes a plurality of cooling air through holes 52 b;
preferably, in order to improve the heat dissipation effect on the motor permanent magnet rotor 20, in the present embodiment, a cooling fan 22 is disposed at the end of the motor permanent magnet rotor 20 close to the motor rear cover 33; particularly preferably, in order to facilitate a stable mounting effect, in the present embodiment, the cooling fan 22 includes straight-blade centrifugal fans 22a, and each straight-blade centrifugal fan 22a is circumferentially locked and positioned by locking pieces;
this embodiment is through setting up motor barrel 32 that adopts panel weld forming, then lid 33 sets up cooling air inlet 51 behind the motor, motor barrel 32 that is close to motor protecgulum 31 one side sets up barrel cooling air outlet 52 on its circumferencial direction simultaneously, motor stator 10 is equipped with the inside cooling wind channel that communicates with cooling air inlet 51 and barrel cooling air outlet 52 respectively simultaneously, and then form the cooling channel structure who has high-efficient radiating effect, in the time of actual work, it is inside that the inside cooling air current of motor directly passes through stator winding to get into from cooling air inlet 51, and the motor heat is taken away in the clearance between motor stator 10 and the motor permanent magnet rotor 20, compact structure and cooling effect are excellent, and motor barrel 32 in this application adopts panel weld forming, the cost of manufacture of the motor that can obviously reduce.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. An air-cooled permanent magnet synchronous motor is characterized by comprising a motor shell, a motor stator and a motor permanent magnet rotor which is integrally installed with a motor shaft, wherein the motor shell comprises a motor front cover, a motor barrel and a motor rear cover which are integrally installed; the motor cylinder is formed by welding plates, the motor rear cover is provided with a cooling air inlet, a cylinder cooling air outlet is formed in the circumferential direction of the motor cylinder close to one side of the motor front cover, and the cylinder cooling air outlet is positioned on the periphery of the cooling air inlet; and meanwhile, the motor stator is provided with an internal cooling air channel which is respectively communicated with the cooling air inlet and the barrel cooling air outlet.
2. The air-cooled permanent magnet synchronous motor according to claim 1, wherein the motor stator comprises a plurality of stator segment units which are spliced into a whole, and the internal cooling air duct is formed between the adjacent stator segment units.
3. The air-cooled permanent magnet synchronous motor according to claim 1, wherein the cooling air inlet comprises a plurality of cooling air through holes in a central region of a rear cover of the motor.
4. The air-cooled permanent magnet synchronous motor according to claim 1, wherein the motor front cover is provided with a plurality of front cover cooling air outlets distributed at intervals in the circumferential direction, and each front cover cooling air outlet is communicated with the cooling air inlet through the internal cooling air duct.
5. The air-cooled permanent magnet synchronous motor according to claim 1, wherein a plurality of barrel cooling air outlet sections are arranged at intervals in the circumferential direction of the motor barrel, and each barrel cooling air outlet section comprises a plurality of cooling air through holes.
6. The air-cooled PMSM of claim 1, wherein a cooling fan is provided at the end of the PMSM rotor adjacent to one side of the back cover of the motor.
7. The air-cooled permanent magnet synchronous motor according to claim 6, wherein the cooling fan comprises straight-blade centrifugal fans each of which is locked in a circumferential direction by a locking piece.
8. The air-cooled permanent magnet synchronous motor according to claim 1, wherein a connecting flange for fixedly installing and connecting with the motor front cover is welded around the motor cylinder body close to one side of the motor front cover, a hoisting column is welded at the top of the motor cylinder body, and a wire outlet hole for leading out a wire harness is arranged.
9. The air-cooled permanent magnet synchronous motor according to claim 8, wherein the motor rear cover is sleeved on the periphery of the motor cylinder and locked by a fastener.
10. The air-cooled PMSM of claim 1, wherein the motor shaft employs a motor PMSM extension shaft adjacent to one side of a motor front cover, the motor PMSM extension shaft being relatively rotatably mounted on the motor front cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121643680.0U CN215498461U (en) | 2021-07-20 | 2021-07-20 | Air-cooled permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121643680.0U CN215498461U (en) | 2021-07-20 | 2021-07-20 | Air-cooled permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215498461U true CN215498461U (en) | 2022-01-11 |
Family
ID=79727943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121643680.0U Active CN215498461U (en) | 2021-07-20 | 2021-07-20 | Air-cooled permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215498461U (en) |
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2021
- 2021-07-20 CN CN202121643680.0U patent/CN215498461U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220302 Address after: Building 1, No.55, Shenzhen road, high tech Industrial Park, Changshu Economic and Technological Development Zone, Suzhou City, Jiangsu Province Patentee after: Suzhou Chiyou Equipment Technology Co.,Ltd. Address before: 215500 No.11, Nanxin Road, Changkun Industrial Park, Shajiabang Town, Changshu City, Suzhou City, Jiangsu Province Patentee before: Suzhou Hengke Electromechanical Technology Co.,Ltd. |