CN213185668U - Outer rotor permanent magnet motor - Google Patents
Outer rotor permanent magnet motor Download PDFInfo
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- CN213185668U CN213185668U CN202022454621.0U CN202022454621U CN213185668U CN 213185668 U CN213185668 U CN 213185668U CN 202022454621 U CN202022454621 U CN 202022454621U CN 213185668 U CN213185668 U CN 213185668U
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- permanent magnet
- shaft
- rotor permanent
- outer rotor
- rotor
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- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The utility model provides an external rotor permanent-magnet machine, including rotor, stator, frame and axle, its characterized in that, ventilation system has between axle and the frame. The utility model has the advantages of good heat dissipation effect.
Description
Technical Field
The utility model belongs to the technical field of the motor, a external rotor permanent-magnet machine is related to.
Background
The permanent magnet motor provides excitation by the permanent magnet, so that the motor has a simpler structure, the processing and assembly cost is reduced, a collecting ring and an electric brush which are easy to cause problems are omitted, and the running reliability of the motor is improved; and because excitation current is not needed, excitation loss is avoided, and the efficiency and the power density of the motor are improved. The permanent magnet motor can be divided into an inner rotor and an outer rotor.
The structure characteristics of the outer rotor permanent magnet motor determine that the stator is positioned in the rotor, and the heat converted from the loss generated in the stator can be only transferred to the engine base and the like through the conduction effect and then dissipated. Without the convection heat dissipation effect of the stator surface directly acted on by the common inner rotor motor. And the rotor of the outer rotor permanent magnet motor is a rotating part and is positioned outside the motor, so that the rotor naturally has a convection heat dissipation effect. Thus, the outer rotor permanent magnet motor forms: the loss is large, the stator with large heat generation is arranged in the stator, and the heat dissipation condition is poor; and the rotor has small loss, small generated heat and good heat dissipation condition. The following problems are solved: the external rotor permanent magnet motor has poor heat dissipation conditions, and further the popularization and the use of the external rotor permanent magnet motor are influenced, so that the external rotor permanent magnet motor with good heat dissipation is necessary to design.
Disclosure of Invention
The utility model aims at having the above-mentioned problem to current technique, provided an external rotor permanent-magnet machine, this permanent-magnet machine has the good characteristics of radiating effect.
The purpose of the utility model can be realized by the following technical proposal: the outer rotor permanent magnet motor comprises a rotor, a stator, a machine base and a shaft, and is characterized in that a ventilation system is arranged between the shaft and the machine base.
The ventilation system comprises an air outlet arranged on a shaft, an air inlet arranged on a machine base, and a convection channel between the shaft and the machine base, wherein the shaft is a hollow shaft.
The rotor includes rotor hub, magnet steel and support component, and support component can cooperate with the axle.
The support member has a recess for securing a load thereon.
And a first sealing ring is arranged at the lower part of the rotor hub and can be matched with the base.
The rotor is a cup-shaped rotor.
The stator includes a stator core, a coil, and an insulation system.
And a second sealing ring is arranged at the lower part of the shaft and can be matched with the bearing cover.
The machine base is internally provided with a radiating fin.
Compared with the prior art, this external rotor permanent-magnet machine has this advantage:
the utility model discloses in through the ventilation system of axle, frame formation, the epaxial gas outlet that has, there is the air inlet frame lower part, a convection current passageway that forms between the two utilizes the convection current effect to take away a large amount of heats, what realize promptly can be from the frame side air inlet, the round of commentaries on classics axle air-out, simultaneously, can be with ordinary motor through the heat path of stator-air gap-rotor-casing or stator-frame with heat radiation and heat-conducting mode heat dissipation, the radiating effect is good.
Drawings
Fig. 1 is a schematic plan view of the present invention.
Fig. 2 is a schematic perspective view of the present invention.
In the figure, 1, a machine base; 2. an air inlet; 3. an air outlet; 4. a shaft; 5. a convection channel.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1-2, the outer rotor permanent magnet motor includes a rotor, a stator, a base 1 and a shaft 4, and a ventilation system is provided between the shaft 4 and the base 1.
The ventilation system comprises an air outlet 3 arranged on a shaft 4, an air inlet 2 arranged on the machine base 1, and a convection channel 5 between the shaft 4 and the machine base 1, wherein the shaft 4 is a hollow shaft.
The rotor comprises a rotor hub, magnetic steel and a support member, and the support member can cooperate with the shaft 4.
The supporting component is provided with a groove for fixing a load, the load can be a fan blade by fixing the load through the fixing block.
And a first sealing ring is arranged at the lower part of the rotor hub and can be matched with the machine base 1, and the first sealing ring is matched with the machine base 1 to form a sealing surface.
The rotor is a cup-shaped rotor.
The stator includes a stator core, a coil, and an insulation system.
And a second sealing ring is arranged at the lower part of the shaft 4 and can be matched with the bearing cover of the shaft 4, and the second sealing ring is matched with the bearing cover of the shaft 4 to form a sealing surface.
The inside of the machine base 1 is provided with a radiating fin.
By adopting the structure, the two sealing surfaces of the bearing covers of the base 1, the rotor hub, the shaft 4 and the shaft 4 form a sealing body of the motor, and the protection level requirements of IP65 and below can be met.
The above components are all standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experiments.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (9)
1. The outer rotor permanent magnet motor comprises a rotor, a stator, a machine base and a shaft, and is characterized in that a ventilation system is arranged between the shaft and the machine base.
2. The external rotor permanent magnet motor of claim 1, wherein the ventilation system includes an air outlet opening in the shaft, an air inlet opening in the housing, and a convection path between the shaft and the housing, the shaft being a hollow shaft.
3. The outer rotor permanent magnet motor of claim 1, wherein the rotor includes a rotor hub, magnetic steel, and a support member, and the support member is engageable with the shaft.
4. The outer rotor permanent magnet machine of claim 3, wherein the support members have grooves thereon for securing a load.
5. The outer rotor permanent magnet machine of claim 3, wherein the rotor hub has a first seal ring at a lower portion thereof, and the first seal ring is capable of mating with the base.
6. The outer rotor permanent magnet machine of claim 1, wherein the rotor is a cup-shaped rotor.
7. The outer rotor permanent magnet machine of claim 1, wherein the stator includes a stator core, coils, and an insulation system.
8. The outer rotor permanent magnet motor of claim 1, wherein a second seal ring is mounted on the lower portion of the shaft and is capable of being matched with the bearing cover.
9. The outer rotor permanent magnet machine of claim 1, wherein the frame has cooling fins inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022454621.0U CN213185668U (en) | 2020-10-29 | 2020-10-29 | Outer rotor permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022454621.0U CN213185668U (en) | 2020-10-29 | 2020-10-29 | Outer rotor permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213185668U true CN213185668U (en) | 2021-05-11 |
Family
ID=75780484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022454621.0U Active CN213185668U (en) | 2020-10-29 | 2020-10-29 | Outer rotor permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213185668U (en) |
-
2020
- 2020-10-29 CN CN202022454621.0U patent/CN213185668U/en active Active
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