CN213243669U - Outer rotor permanent magnet motor - Google Patents
Outer rotor permanent magnet motor Download PDFInfo
- Publication number
- CN213243669U CN213243669U CN202022454939.9U CN202022454939U CN213243669U CN 213243669 U CN213243669 U CN 213243669U CN 202022454939 U CN202022454939 U CN 202022454939U CN 213243669 U CN213243669 U CN 213243669U
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- rotor
- stator
- permanent magnet
- support
- magnet motor
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 5
- 238000007792 addition Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Motor Or Generator Cooling System (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model provides an external rotor permanent-magnet machine. The technical problems that the existing outer rotor permanent magnet motor is poor in heat dissipation condition, and further popularization and use of the outer rotor permanent magnet motor are influenced are solved. The outer rotor permanent magnet motor comprises a base, a fixed shaft, a stator and a rotor, and is characterized in that a convection channel for heat dissipation is arranged between the stator and the rotor.
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 outer rotor permanent magnet motor generally comprises a rotor, a stator, a shaft and a base, wherein the rotor is positioned outside the stator, and the stator is positioned inside the rotor; the engine base, the shaft and the like are structural components. The rotor rotates relative to the stator to drive a load.
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 external rotor permanent-magnet machine has the good characteristics of radiating effect.
The purpose of the utility model can be realized by the following technical proposal: an outer rotor permanent magnet motor comprises a base, a fixed shaft, a stator and a rotor, and is characterized in that a convection channel for heat dissipation is arranged between the stator and the rotor.
The stator comprises a stator support part, the stator support part is in a hollow spoke shape or is provided with a through hole, the rotor comprises a rotor support part, the rotor support part is in a hollow spoke shape or is provided with a through hole, and a convection channel is formed between the stator support part and the rotor support part.
The rotor further comprises a rotor hub and magnetic steel.
The stator further includes a stator core, a coil, and an insulation system.
The rotor support is also provided with a guard ring extending to the inner circle of the stator core.
The rotor is a cup-shaped rotor.
Compared with the prior art, this external rotor permanent-magnet machine has this advantage:
the permanent magnet motor of the utility model has a hollow spoke shape or a structure with a through hole, and utilizes the space inside the stator to form a convection channel; when the permanent magnet motor is operated, the load drives air to pass through the air duct and directly contact the main heating part (stator) of the motor to take away a large amount of heat, namely, the air can directly blow the stator to dissipate heat, and meanwhile, the heat can be dissipated in a heat radiation and heat conduction mode through a heat path of the stator-air gap-rotor-shell or the stator-base like a common motor, so that the heat dissipation effect is good.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic plan view of the present invention.
Fig. 3 is a flow chart of the air flow in the present invention.
In the figure, 1, a machine base; 2. a fixed shaft; 3. a rotor support; 4. a guard ring; 5. a stator support.
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. 1-3, the outer rotor permanent magnet motor includes a base 1, a fixed shaft 2, a stator and a rotor, in this embodiment, both the base 1 and the fixed shaft 2 are in the prior art; and a convection channel for heat dissipation is arranged between the stator and the rotor.
The stator comprises a stator support 5, the stator support 5 is in a hollow spoke shape or is provided with a through hole, in the embodiment, the stator support 5 is in a hollow spoke shape; the rotor comprises a rotor support 3, the rotor support 3 is in a hollow spoke shape or is provided with a through hole, in the embodiment, the rotor support 3 is in a hollow spoke shape; and a convection passage is formed between the stator support 5 and the rotor support 3.
The rotor also includes a rotor hub and magnetic steel.
The stator further comprises a stator core, a coil and an insulation system, which in this embodiment is prior art.
The rotor support 3 is also provided with a protective ring 4 extending to the inner circle of the stator core, and the structure is adopted to achieve the protection level of IP43 and below; under the combined action of the guard ring 4 and other stator and rotor structures, the stator and rotor gaps can be in a closed state.
The rotor is a cup-shaped rotor.
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 (6)
1. An outer rotor permanent magnet motor comprises a base, a fixed shaft, a stator and a rotor, and is characterized in that a convection channel for heat dissipation is arranged between the stator and the rotor.
2. The external rotor permanent magnet machine of claim 1, wherein the stator includes a stator support, the stator support is hollow spoke-shaped or perforated, the rotor includes a rotor support, the rotor support is hollow spoke-shaped or perforated, and a convection channel is formed between the stator support and the rotor support.
3. The external rotor permanent magnet motor of claim 2, wherein the rotor further comprises a rotor hub and magnetic steel.
4. The external rotor permanent magnet machine of claim 2, wherein the stator further comprises a stator core, coils, and an insulation system.
5. The external rotor permanent magnet machine of claim 2, wherein the rotor support member further includes a guard ring extending to an inner circle of the stator core.
6. The external rotor permanent magnet machine of claim 1, wherein the rotor is a cup-shaped rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022454939.9U CN213243669U (en) | 2020-10-29 | 2020-10-29 | Outer rotor permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022454939.9U CN213243669U (en) | 2020-10-29 | 2020-10-29 | Outer rotor permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213243669U true CN213243669U (en) | 2021-05-18 |
Family
ID=75881243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022454939.9U Active CN213243669U (en) | 2020-10-29 | 2020-10-29 | Outer rotor permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213243669U (en) |
-
2020
- 2020-10-29 CN CN202022454939.9U patent/CN213243669U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A type of external rotor permanent magnet motor Granted publication date: 20210518 Pledgee: Jiaxing Bank Co.,Ltd. Xiuzhou Science and Technology Innovation Small and Micro Comprehensive Branch Pledgor: Zhejiang Gaiya Driving Technology Co.,Ltd. Registration number: Y2024980003004 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |