CN207339465U - Built-in permanent magnet motor rotor - Google Patents
Built-in permanent magnet motor rotor Download PDFInfo
- Publication number
- CN207339465U CN207339465U CN201721505691.6U CN201721505691U CN207339465U CN 207339465 U CN207339465 U CN 207339465U CN 201721505691 U CN201721505691 U CN 201721505691U CN 207339465 U CN207339465 U CN 207339465U
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- rotor
- magnet mounting
- mounting hole
- rotor body
- 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.)
- Expired - Fee Related
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Magneto field is the utility model is related to, discloses a kind of built-in permanent magnet motor rotor.The pole rotor includes the rotor body with cylindrical structure, wherein along the axle center of the rotor body formed with the axial aperture structure coordinated with shaft, include at least one set of permanent magnet mounting hole group along the radial direction of the rotor body, each permanent magnet mounting hole group includes multiple permanent magnet mounting holes around axial aperture structure distribution；And it is circumferentially provided with multiple permanent magnet mounting grooves along in the rotor body outer wall.The built-in permanent magnet motor rotor on rotor body by setting multigroup permanent magnet mounting hole group and multiple permanent magnet mounting grooves, not only it is easy to the installation of permanent magnet, and the heat dissipation of rotor is also helped, and then avoid permanent magnet loss of excitation caused by temperature rise is excessive.
Description
Technical field
It the utility model is related to magneto field, and in particular to a kind of built-in permanent magnet motor rotor.
Background technology
Permanent magnet synchronous motor is the synchronous motor that synchronous rotary magnetic field is produced by permanent magnet excitation, and permanent magnet is produced as rotor
Raw rotating excitation field, threephase stator winding, by armature-reaction, sense three-phase symmetrical electric current under rotating excitation field effect.Neodymium iron boron is forever
Magnetic material has preferable magnetic energy product, coercivity and mechanical property because its is cost-effective, is widely used in magneto；
In the permanent magnet synchronous motor of inverter supply, since harmonic content is big, and Nd-Fe-B permanent magnet (Permanent Magnet,
PM) electrical conductivity is high, it will produces larger permanent magnet eddy-current loss, and makes permanent magnet temperature rise excessive and then cause its loss of excitation.
In order to reduce the temperature change of magneto, it usually needs cool down to magneto, and traditional cooling side
Method is water cooling or natural air cooled.Existing this cooling method can take away the heat in stator in permanent magnet synchronous motor,
And rotor and permanent magnet to being in motor internal are then difficult to radiate.
Utility model content
The purpose of this utility model is to overcome the shortcomings of the prior art, there is provided a kind of interior permanent magnet machines
Rotor, to improve the heat dissipation performance of the rotor.
To achieve these goals, on the one hand the utility model provides a kind of built-in permanent magnet motor rotor, which turns
Attached bag includes the rotor body with cylindrical structure, wherein along the axle center of the rotor body formed with the axis hole knot coordinated with shaft
Structure, includes at least one set of permanent magnet mounting hole group, each permanent magnet mounting hole group includes ring along the radial direction of the rotor body
Around multiple permanent magnet mounting holes of axial aperture structure distribution；And along the rotor body outer wall be circumferentially provided with it is multiple forever
Magnet mounting groove.
Preferably, 2-4 group permanent magnet mounting hole groups are provided with the rotor body.
Preferably, along the radial direction direction from the inside to the outside of the rotor body, in permanent magnet mounting hole group described in each group forever
The size of magnet mounting hole increases successively.
Preferably, the quantity of permanent magnet mounting hole and it is formed in the rotor body in permanent magnet mounting hole group described in each group
The quantity of permanent magnet mounting groove on outer wall is identical.
Preferably, corresponding permanent magnet mounting hole and it is formed in the rotor body in permanent magnet mounting hole group described in each group
Corresponding permanent magnet mounting groove is set along the radial direction of the rotor body successively on outer wall.
Preferably, each permanent magnet mounting hole edge has trapezoidal or sector structure perpendicular to the cross section of axial direction,
And short side is set close to the axial aperture structure in described trapezoidal or sector structure.
Preferably, each permanent magnet mounting hole is axially through the rotor body, and one end opens and stretches out to form insertion
Mouthful, other end sealing is used as support plate.
Preferably, the permanent magnet mounting groove is by along the axially extending two side walls of the rotor body and by the rotor
The outwardly extending bottom wall in one side end face of body surrounds.
Preferably, two adjacent permanent magnets mounting groove does not share same side wall.
Preferably, in two adjacent permanent magnets mounting groove radiating groove is formed between adjacent wall.
Using the utility model built-in permanent magnet motor rotor, by setting multigroup permanent magnet mounting hole on rotor body
Group and multiple permanent magnet mounting grooves, not only easy to the installation of permanent magnet, and also help the heat dissipation of rotor, and then avoid
Permanent magnet loss of excitation caused by temperature rise is excessive.
Brief description of the drawings
Fig. 1 is shown to be illustrated according to a kind of stereochemical structure of built-in permanent magnet motor rotor of embodiment of the utility model
Figure；
Fig. 2 is shown according to a kind of overlooking structure figure of the built-in permanent magnet motor rotor of embodiment of the utility model；
Fig. 3 is shown according to a kind of built-in permanent magnet motor rotor of embodiment of the utility model and the compound solid of shaft
Structure diagram.
Description of reference numerals
1 is axial aperture structure；2nd, 3,4 be permanent magnet mounting hole；5 be permanent magnet mounting groove；6 be side wall；7 be shaft.
Embodiment
The endpoint of disclosed scope and any value are not limited to the accurate scope or value herein, these scopes or
Value should be understood to comprising the value close to these scopes or value.For number range, between the endpoint value of each scope, respectively
It can be combined with each other between the endpoint value of a scope and single point value, and individually between point value and obtain one or more
New number range, these number ranges should be considered as specific open herein.
In the utility model, there is provided a kind of built-in permanent magnet motor rotor, as shown in Figure 1-Figure 3, the electrode turn
Attached bag includes the rotor body with cylindrical structure, wherein along the axle center of the rotor body formed with the axis hole coordinated with shaft 7
Structure 1, includes at least one set of permanent magnet mounting hole group, each permanent magnet mounting hole group includes along the radial direction of the rotor body
Around multiple permanent magnet mounting holes 2,3,4 of the axial aperture structure 1 distribution；And along in the circumferentially disposed of the rotor body outer wall
There are multiple permanent magnet mounting grooves 5.
Rotor according to the present utility model is installed on permanent magnet mounting hole and permanent magnetism in actual use, by permanent magnet
In body mounting groove；And according to the power of rotor, the quantity of installed permanent magnet can be selected, and by permanent magnet around axis hole
Structure 1 is axial to be distributed in the rotor body.
Rotor according to the present utility model, it is excellent for the ease of the installation of permanent magnet, and for the ease of the cooling of rotor
In the case of choosing, 2-4 group permanent magnet mounting hole groups, such as two groups, three groups or four groups are provided with the rotor body.Preferable case
Under, every group of permanent magnet mounting hole group includes at least three permanent magnet mounting hole, is preferably 20-30 permanent magnet mounting hole, such as select
Any number from 20,21,22,23,24,25,26,27,28,29,30, or the group that any two numerical value is formed；More
Preferably, along the radial direction direction from the inside to the outside of the rotor body, permanent magnet is installed in permanent magnet mounting hole group described in each group
The size in hole 2,3,4 increases successively.
Rotor according to the present utility model, for the ease of structural stability, under preferable case, permanent magnet described in each group
The quantity of permanent magnet mounting hole 2,3,4 and the permanent magnet mounting groove 5 that is formed on the rotor body outer wall in mounting hole group
Quantity is identical.In the case of preferred, corresponding permanent magnet mounting hole 2,3,4 is with forming in permanent magnet mounting hole group described in each group
Corresponding permanent magnet mounting groove 5 is set along the radial direction of the rotor body successively on the rotor body outer wall.
Rotor according to the present utility model, in order to make full use of rotor body space structure, under preferable case, each institute
State permanent magnet mounting hole 2,3,4 has trapezoidal or sector structure, and described trapezoidal or fan along perpendicular to the cross section of axial direction
Short side is set close to the axial aperture structure 1 in shape structure.
Rotor according to the present utility model, under preferable case, each permanent magnet mounting hole is axially through the rotor
Body, and one end opens and stretches out to form insert port, other end sealing is used as support plate.
Rotor according to the present utility model, for the ease of heat dissipation, under preferable case, the permanent magnet mounting groove 5 by
Surrounded along the axially extending two side walls 6 of the rotor body and by the outwardly extending bottom wall in one side end face of rotor body.
Under preferable case, two adjacent permanent magnets mounting groove 5 does not share same side wall.In the case of preferred, two adjacent permanent magnets
In mounting groove 5 radiating groove is formed between adjacent wall.
The preferred embodiment of the utility model described in detail above, still, the utility model is not limited to this.At this
In the range of the technology design of utility model, a variety of simple variants can be carried out to the technical solution of the utility model, including it is each
Technical characteristic is combined with any other suitable method, these simple variants and combination should equally be considered as the utility model
Disclosure of that, belongs to the scope of protection of the utility model.
Claims (10)
1. a kind of built-in permanent magnet motor rotor, it is characterised in that the rotor includes the rotor sheet with cylindrical structure
Body, wherein along the axle center of the rotor body formed with the axial aperture structure (1) coordinated with shaft (7), along the rotor body
Radially include at least one set of permanent magnet mounting hole group, each permanent magnet mounting hole group is included around the axial aperture structure (1) point
Multiple permanent magnet mounting holes (2,3,4) of cloth；And it is circumferentially provided with multiple permanent magnet installations along in the rotor body outer wall
Groove (5).
2. rotor according to claim 1, it is characterised in that 2-4 group permanent magnets are provided with the rotor body
Mounting hole group.
3. rotor according to claim 1, it is characterised in that along the radial direction side from the inside to the outside of the rotor body
To the size of permanent magnet mounting hole (2,3,4) increases successively in permanent magnet mounting hole group described in each group.
4. rotor according to claim 1, it is characterised in that permanent magnet is pacified in permanent magnet mounting hole group described in each group
The quantity for filling permanent magnet mounting groove (5) of the quantity of hole (2,3,4) with being formed on the rotor body outer wall is identical.
5. rotor according to claim 4, it is characterised in that in permanent magnet mounting hole group described in each group forever accordingly
Magnet mounting hole (2,3,4) is with being formed on the rotor body outer wall corresponding permanent magnet mounting groove (5) successively along described turn
The radial direction of sub- body is set.
6. rotor as claimed in any of claims 1 to 5, it is characterised in that each permanent magnet mounting hole
(2,3,4) there is trapezoidal or sector structure, and short side in described trapezoidal or sector structure along perpendicular to the cross section of axial direction
Set close to the axial aperture structure (1).
7. rotor as claimed in any of claims 1 to 5, it is characterised in that each permanent magnet mounting hole is along axis
To through the rotor body, and one end open stretch out to form insert port, other end sealing is used as support plate.
8. rotor according to claim 1, it is characterised in that the permanent magnet mounting groove (5) is by along the rotor
The axially extending two side walls of body (6) and surrounded by the outwardly extending bottom wall in one side end face of rotor body.
9. rotor according to claim 1, it is characterised in that two adjacent permanent magnets mounting groove (5) does not share same
One side wall.
10. rotor according to claim 1, it is characterised in that sides adjacent in two adjacent permanent magnets mounting groove (5)
Radiating groove is formed between wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721505691.6U CN207339465U (en) | 2017-11-13 | 2017-11-13 | Built-in permanent magnet motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721505691.6U CN207339465U (en) | 2017-11-13 | 2017-11-13 | Built-in permanent magnet motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207339465U true CN207339465U (en) | 2018-05-08 |
Family
ID=62427731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721505691.6U Expired - Fee Related CN207339465U (en) | 2017-11-13 | 2017-11-13 | Built-in permanent magnet motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207339465U (en) |
-
2017
- 2017-11-13 CN CN201721505691.6U patent/CN207339465U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180508 Termination date: 20191113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |