CN218102880U - Totally-enclosed permanent magnet synchronous motor with self-air-cooling heat dissipation structure - Google Patents
Totally-enclosed permanent magnet synchronous motor with self-air-cooling heat dissipation structure Download PDFInfo
- Publication number
- CN218102880U CN218102880U CN202122486047.1U CN202122486047U CN218102880U CN 218102880 U CN218102880 U CN 218102880U CN 202122486047 U CN202122486047 U CN 202122486047U CN 218102880 U CN218102880 U CN 218102880U
- Authority
- CN
- China
- Prior art keywords
- rotor
- rotor core
- heat dissipation
- air
- permanent magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
A totally-enclosed permanent magnet synchronous motor with a self-air-cooling heat dissipation structure relates to the technical field of motors, and comprises a housing, a stator and a rotor which are arranged in the housing, wherein permanent magnet steel is embedded in a rotor core of the rotor, a hollow magnetism isolating groove which is communicated from front to back is formed in the rotor core of the rotor, two heat dissipation impellers are arranged on a rotating shaft of the rotor and are respectively arranged on the front side and the back side of the rotor core, the air outlet side of one heat dissipation impeller faces the rotor core, and the air inlet side of the other heat dissipation impeller faces the rotor core; a plurality of strip-shaped air guide grooves are formed in the inner wall of the shell, the front ends of the air guide grooves extend to the front of the stator and the rotor core, and the rear ends of the air guide grooves extend to the rear of the stator and the rotor core. The utility model provides a motor, heat dispersion is good, and the running life is long.
Description
Technical Field
The utility model relates to a motor technology especially relates to a totally closed PMSM's of self-air cooling heat radiation structure technique.
Background
The rotor of the permanent magnet synchronous motor is excited by the permanent magnet, and compared with an induction motor, the permanent magnet synchronous motor has the advantages of high efficiency, high power factor and the like. However, because the permanent magnet has the characteristics of adsorbing metal chips, charged particles and the like, the permanent magnet synchronous motor generally adopts a fully-closed structure.
The existing totally-enclosed permanent magnet synchronous motor adopts a shell water cooling, oil cooling or external fan cooling mode to improve the heat dissipation capacity of the motor. However, the permanent magnet and the rotor core around the permanent magnet have a certain eddy current loss, and a part of loss heat of the outer stator is slowly transferred to the rotor through the air gap, so that the permanent magnet has high temperature, the magnetic performance is reduced, and even irreversible demagnetization is caused.
In order to reduce the magnetic leakage of the permanent magnet, two sides of the non-magnetizing direction of the permanent magnet are provided with magnetism isolating grooves, epoxy resin is filled in the magnetism isolating grooves to improve the heat dissipation capacity, but because a main heat source is arranged on a stator at the outer side, the heat generated by a rotor is not easy to be discharged outwards.
Therefore, the existing fully-closed permanent magnet synchronous motor has the defects of poor rotor heat dissipation performance and short service life.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the above-mentioned prior art, the utility model aims to solve the technical problem that a totally closed PMSM from air-cooled heat radiation structure that heat dispersion is good is provided, and the running life is long.
In order to solve the technical problem, the utility model provides a from totally closed PMSM of forced air cooling heat radiation structure, including the casing, and install stator, the rotor in the casing, permanent magnet steel has been set to the embedding on the rotor core of rotor to set up the hollow magnetism isolating groove that link up around on the rotor core of rotor, its characterized in that:
two heat dissipation impellers are arranged on a rotating shaft of the rotor and are respectively arranged on the front side and the rear side of the rotor iron core, the air outlet side of one heat dissipation impeller faces the rotor iron core, and the air inlet side of the other heat dissipation impeller faces the rotor iron core;
a plurality of strip-shaped air guide grooves are formed in the inner wall of the shell, the front ends of the air guide grooves extend to the front of the stator and the front of the rotor core, the rear ends of the air guide grooves extend to the rear of the stator and the rear of the rotor core, and the air guide grooves are evenly distributed along the circumferential direction of the inner wall of the shell.
The utility model provides a totally closed PMSM from air-cooled heat radiation structure, the magnetism isolating groove and set up the wind-guiding slot at the casing inner wall and form a heat dissipation circulation wind path jointly, utilize two heat dissipation impeller one side opposite side convulsions of blowing, can form a circulation heat dissipation air current, can transfer the heat on the rotor core to the casing and cool off, thereby can effectively avoid the permanent magnet high temperature on the rotor, make the permanent magnet physical stamina on the rotor keep good magnetic property, it is good to have heat dispersion, the long-lived characteristics of operation.
Drawings
Fig. 1 is a right sectional schematic view of a totally-enclosed permanent magnet synchronous motor of a self-air-cooling heat dissipation structure according to an embodiment of the present invention;
fig. 2 isbase:Sub>A schematic radial cross-sectional view of the fully-closed permanent magnet synchronous motor with the self-air-cooling heat dissipation structure according to the embodiment of the present invention, which is sectioned along the linebase:Sub>A-base:Sub>A in fig. 1.
Detailed Description
The following description will be made in detail with reference to the accompanying drawings, but the present embodiment is not intended to limit the present invention, and all similar structures and similar variations thereof adopted by the present invention should be included in the protection scope of the present invention, and the relations between the numbers of the components in the present invention are shown.
As shown in fig. 1-2, the embodiment of the present invention provides a fully-enclosed permanent magnet synchronous motor with a self-air-cooling heat dissipation structure, which includes a casing 1, a stator 2 and a rotor installed in the casing, a permanent magnet steel 5 embedded in a rotor core 3 of the rotor, a hollow magnetism isolating slot 6 penetrating from front to back opened on the rotor core 3 of the rotor, two heat dissipation impellers 7 and 8 installed on a rotating shaft 4 of the rotor, the two heat dissipation impellers being respectively installed on the front and back sides of the rotor core 3, an air outlet side of one heat dissipation impeller 8 facing the rotor core 3, and an air inlet side of the other heat dissipation impeller 7 facing the rotor core 3;
the inner wall of the casing 1 is provided with a plurality of strip-shaped air guide grooves 9, the front ends of the air guide grooves 9 extend to the front sides of the stator 2 and the rotor core 3, the rear ends of the air guide grooves 9 extend to the rear sides of the stator 2 and the rotor core 3, and the air guide grooves 9 are uniformly distributed along the circumferential direction of the inner wall of the casing.
The embodiment of the utility model provides an in, the magnetism-isolating groove 6 and set up at the wind-guiding slot 9 of casing inner wall form a heat dissipation circulation wind path jointly, rotor during operation, heat dissipation impeller 8 bloies, heat dissipation impeller 7 convulsions, at two heat dissipation impeller 7, 8 under the effect, the air at casing inner chamber rear portion reachs the casing inner chamber front portion by passing each hollow magnetism-isolating groove 6 on rotor core 3 backward forward, the heat on rotor core 3 is taken away to this in-process, then reentrant wind-guiding slot 9, and flow back to casing inner chamber rear portion along wind-guiding slot 9, thereby heat transfer to the casing on the rotor core, and through the continuous heat that gives off of casing, get back to the air current at casing inner chamber rear portion after the cooling and then participate in next round of circulation again, thereby form a circulation heat dissipation air current, the last heat transfer to the casing on the rotor core dispels the heat, thereby can effectively avoid the permanent magnet high temperature on the rotor, make the permanent magnet physical stamina on the rotor keep good magnetic performance.
The embodiment of the utility model provides an in, the heat dissipation impeller 8 at rear portion is bloied to rotor core 3, and anterior heat dissipation impeller 7 is to 3 convulsions of rotor core, among the other embodiments of the utility model, also can be bloied to rotor core by anterior heat dissipation impeller, and the heat dissipation impeller at rear portion also can realize the same function to rotor core convulsions.
Claims (1)
1. The utility model provides a from totally closed PMSM of forced air cooling heat radiation structure, includes the casing, and installs stator, the rotor in the casing, permanent magnet steel has been set to inlay on the rotor core of rotor to the hollow magnetism isolating slot that link up around having seted up on the rotor core of rotor, its characterized in that:
two radiating impellers are arranged on a rotating shaft of the rotor and are respectively arranged on the front side and the rear side of a rotor iron core, the air outlet side of one radiating impeller faces the rotor iron core, and the air inlet side of the other radiating impeller faces the rotor iron core;
a plurality of strip-shaped air guide grooves are formed in the inner wall of the machine shell, the front ends of the air guide grooves extend to the front sides of the stator and the rotor core, the rear ends of the air guide grooves extend to the rear sides of the stator and the rotor core, and the air guide grooves are evenly distributed along the circumferential direction of the inner wall of the machine shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122486047.1U CN218102880U (en) | 2021-10-15 | 2021-10-15 | Totally-enclosed permanent magnet synchronous motor with self-air-cooling heat dissipation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122486047.1U CN218102880U (en) | 2021-10-15 | 2021-10-15 | Totally-enclosed permanent magnet synchronous motor with self-air-cooling heat dissipation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218102880U true CN218102880U (en) | 2022-12-20 |
Family
ID=84444549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122486047.1U Active CN218102880U (en) | 2021-10-15 | 2021-10-15 | Totally-enclosed permanent magnet synchronous motor with self-air-cooling heat dissipation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218102880U (en) |
-
2021
- 2021-10-15 CN CN202122486047.1U patent/CN218102880U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5358667B2 (en) | Permanent magnet generator | |
| WO2022027742A1 (en) | Integrated air-cooled axial flux motor | |
| CN107147260A (en) | A kind of axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive with combination cooling structure | |
| CN110707843A (en) | Motor cooling structure and permanent magnet synchronous motor for electric automobile | |
| CN113346678B (en) | Hybrid excitation turbogenerator with multistage axial flow-centrifugal ventilation cooling system | |
| CN110718992B (en) | Motor iron core | |
| CN115224834B (en) | High-temperature interference prevention permanent magnet synchronous motor | |
| CN218335566U (en) | Air-water-cooled magnetic suspension motor and fan with same | |
| CN112383191B (en) | Self-fan cold axial flux motor with external centrifugal fan | |
| CN113036968A (en) | Rotor internal oil circuit cooling structure | |
| CN221568918U (en) | Mixed cooling type air suspension centrifugal compressor | |
| CN107086713B (en) | High-efficient radiating forced air cooling stator and rotor motor | |
| CN116526753A (en) | Magnetic suspension motor and magnetic suspension blower with compound heat dissipation mode | |
| US12107485B2 (en) | Permanent magnet motor with air and water mixed cooling system | |
| CN110768414A (en) | Cooling structure of permanent magnet motor | |
| CN208674971U (en) | Disc type electric machine and its stator core construction | |
| CN208539671U (en) | A kind of self-cooling motor rotor | |
| CN218102880U (en) | Totally-enclosed permanent magnet synchronous motor with self-air-cooling heat dissipation structure | |
| CN113541398A (en) | Permanent magnet motor and rail locomotive | |
| CN117424393A (en) | Mixed-cooling double-rotor radial magnetic flux hub motor | |
| CN112491206A (en) | Motor refrigerant cooling structure | |
| CN113890270A (en) | Totally-enclosed permanent magnet synchronous motor with self-air-cooling heat dissipation structure | |
| CN213585315U (en) | Light high-speed large-capacity air-water cooling synchronous generator | |
| JP4640681B2 (en) | Rotating electric machine | |
| CN114465388A (en) | Radial multi-parallel wind path inner-cooling type pumped storage generator motor rotor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |