CN106712342A - Motor and rotor thereof - Google Patents
Motor and rotor thereof Download PDFInfo
- Publication number
- CN106712342A CN106712342A CN201510469166.2A CN201510469166A CN106712342A CN 106712342 A CN106712342 A CN 106712342A CN 201510469166 A CN201510469166 A CN 201510469166A CN 106712342 A CN106712342 A CN 106712342A
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- rotor
- permanent magnet
- square groove
- square
- straightway
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a motor and a rotor thereof. The rotor comprises a rotor iron core and permanent magnets, wherein the permanent magnets are embedded in permanent magnet grooves in the rotor iron core. Each permanent magnet groove comprises two sections of square grooves, and the two sections of square grooves are arranged symmetrically about a diameter of the rotor. The adjacent two square grooves for the adjacent two permanent magnet grooves are arranged parallelly, the two square grooves are arranged symmetrically about a diameter of the rotor, no included angle exists between the adjacent two square grooves in the adjacent permanent magnet grooves through parallel arrangement, that is, the end part of the square groove is parallel to the outer circle tangent line of the rotor, and thus, on the premise of ensuring the distance between the permanent magnet groove and the rotor outer circle and the distance between the permanent magnet groove and the rotor inner circle, the size of the square groove is increased, the size of the permanent magnet can thus be increased, and the capability of outputting torque by a permanent magnet motor is improved.
Description
Technical field
It is to be related to a kind of motor and its rotor in particular the present invention relates to technical field of driving.
Background technology
Motor refers to a kind of calutron that electric energy conversion or transmission are realized according to the law of electromagnetic induction, electromagnetism
Formula motor includes stator and rotor, and rotor structure includes rotor core and set of permanent magnets, specifically,
Permanent magnet trough is provided with rotor core, and in permanent magnet insertion permanent magnet trough.
At present, the permanent magnet trough of rotor core of the prior art be U-shape structure or V-structure, and
And adjacent two cell wall of two adjacent permanent magnet troughs is inclined, i.e., with certain angle, compare
In traditional yi word pattern structure, the output torque ability of magneto can be improved.But due to production work
The limitation of skill, permanent magnet trough apart from rotor outer circle between h, permanent magnet trough apart from b, permanent magnet trough
There is minimum range to limit apart from c apart from rotor inner circle, this causes that the length of the cell wall being obliquely installed is received
To limitation, the size of permanent magnet is influenceed, so as to have impact on the ability of magneto output torque.
Therefore, the ability of magneto output torque how is improved, is that those skilled in the art need at present
The technical problem of solution.
The content of the invention
In view of this, the invention provides a kind of rotor of motor, to improve magneto output torque
Ability, present invention also offers a kind of motor with the rotor.
To achieve the above object, the present invention provides following technical scheme：
A kind of rotor of motor, including rotor core and permanent magnet, the rotor core circumferentially uniformly set
Multiple permanent magnet troughs are equipped with, the permanent magnet is embedded in the permanent magnet trough, wherein,
The permanent magnet trough includes：Two sections of square grooves, and two sections of square grooves one on rotor are straight
Footpath is arranged symmetrically；
The two neighboring described square groove parallel arrangement of the two neighboring permanent magnet trough, and on rotor
Another diameter symmetry arrangement.
Preferably, in above-mentioned rotor, the permanent magnet trough also includes being close to two sections of square grooves turning
The connected medial launder in the one end in the sub- center of circle.
Preferably, in above-mentioned rotor, the medial launder is connected with two square grooves.
Preferably, in above-mentioned rotor, the medial launder is deep-slotted chip breaker or square groove.
Preferably, in above-mentioned rotor, the symmetry axis of the medial launder of the permanent magnet trough and the permanent magnet trough
Two sections of square grooves symmetrical overlapping of axles.
Preferably, in above-mentioned rotor, the magnetic energy of permanent magnet is less than in the medial launder in the square groove
The magnetic energy of permanent magnet.
Preferably, it is straightway at the corresponding rotor outer ring of the square groove in above-mentioned rotor.
Preferably, in above-mentioned rotor, the straightway is parallel with the end of the square groove, and adjacent
Two perpendicular bisectors pair of the straightway of the two neighboring described square groove on rotor outer ring of the permanent magnet trough
Claim arrangement.
Preferably, in above-mentioned rotor, the length of the straightway is more than two relative with the straightway
The distance between outer side edges of the square groove.
Preferably, in above-mentioned rotor, rotor outer ring is straightway arrangement alternate with arc section.
Preferably, in above-mentioned rotor, be provided between the straightway of the square groove and rotor outer ring every
Magnetic bridge, and the thickness every magnetic bridge is more than 0.35mm.
Preferably, in above-mentioned rotor, square groove end corresponding with rotor outer ring is arc section.
A kind of motor, including rotor, wherein, the rotor is the rotor described in any of the above-described.
Understood via above-mentioned technical scheme, the invention discloses a kind of rotor of motor, including rotor iron
In core and permanent magnet, and the permanent magnet trough of permanent magnet insertion rotor core, wherein, permanent magnet trough includes：
Two sections of square grooves, and diameter symmetry arrangement of this two sections of square grooves on rotor；It is two neighboring forever
The two neighboring square groove parallel arrangement of magnet slot, and a diameter of the two square grooves on rotor
It is arranged symmetrically, by be arrangeding in parallel so that not having between two square grooves adjacent in adjacent permanent magnet trough
Angle, that is, ensure that the end of square groove is parallel with the outer ring tangent line of rotor, so as to ensure that permanent magnet trough
Distance and permanent magnet trough apart from rotor outer circle are increased square on the premise of the distance of rotor inner circle
The size of groove, and then the size of permanent magnet can be increased, improve the ability of magneto output torque.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to reality
The accompanying drawing to be used needed for example or description of the prior art is applied to be briefly described, it should be apparent that, below
Accompanying drawing in description is only embodiments of the invention, for those of ordinary skill in the art, not
On the premise of paying creative work, other accompanying drawings can also be obtained according to the accompanying drawing for providing.
Fig. 1 is the structural representation of the rotor of the first motor provided in an embodiment of the present invention；
Fig. 2 is the structural representation of the rotor of second motor provided in an embodiment of the present invention；
Fig. 3 is the structural representation that square groove end provided in an embodiment of the present invention is circular arc；
Fig. 4 is the structural representation of the rotor of the third motor provided in an embodiment of the present invention；
Fig. 5 is the structural representation of the rotor of the 4th kind of motor provided in an embodiment of the present invention.
Specific embodiment
Core of the invention is to provide a kind of rotor of motor, to improve the ability of magneto output torque,
Another core of the invention is to provide a kind of motor with the rotor.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, belong to the scope of protection of the invention.
As Figure 1-Figure 5, the invention discloses a kind of rotor of motor, including rotor core and permanent magnetism
In body, and permanent magnet insertion multiple permanent magnet troughs for being circumferentially uniformly arranged of rotor core, wherein, permanent magnetism
Body groove includes：Two sections of square grooves 1, and this two sections of square grooves 1 on rotor a diameter (herein will
The diameter is denoted as the first diameter) it is arranged symmetrically；The two neighboring square groove 1 of two adjacent permanent magnets groove is flat
Row arrangement, and the diameter (is denoted as the by another article diameter of the two square grooves 1 on rotor herein
Two diameters) it is arranged symmetrically.There are multiple permanent magnet troughs, and each due to circumferentially arranged on rotor core
Permanent magnet trough includes two sections of square grooves 1, and a diameter pair of this two sections of square grooves 1 on permanent magnet trough
Claim, it will be appreciated by persons skilled in the art that rotor core has without several diameters, this is specified herein
As long as two sections of square grooves 1 are symmetrical on wherein one, further, since permanent magnet trough is along rotor core
Be arranged circumferentially, can cause there are two sections of adjacent square grooves 1, this two sections in adjacent permanent magnet trough
Square groove 1 is arranged in parallel, and the arrangement of another diameter symmetry on rotor, and this causes each permanent magnetism
Two sections of square grooves 1 of groove form U-shaped or V-type structure, while adjacent in two adjacent permanent magnetism grooves
Square groove 1 it is parallel.
By be arrangeding in parallel so that there is no angle between two square grooves 1 adjacent in adjacent permanent magnet trough,
Ensure that the end of square groove 1 is parallel with the outer ring tangent line of rotor, so as to ensure that permanent magnet trough distance
Rotor outer circle apart from h and permanent magnet trough apart from rotor inner circle on the premise of the c, increase square
The size of groove 1, and then the size of permanent magnet can be increased, improve the ability of magneto output torque.
In order to increase taking up room for permanent magnet, above-mentioned permanent magnet trough also includes medial launder 2, and middle
The two ends of groove 2 are connected with two sections of square grooves 1 near the one end in the rotor center of circle respectively.By increasing medial launder 2
Taking up room for permanent magnet can be increased, so as to further improve the ability of magneto output torque.
Specifically, the medial launder 2 can be communicated as one with above-mentioned two sections of square grooves 1, also dependent on difference
The need for be set to disconnected mode, i.e., tripartite structure.In practice, can be according to square
The permanent magnetism shape corresponding with the form setting of medial launder 2 of groove 1, and in protection domain.
In practice, medial launder 2 can be set to deep-slotted chip breaker, ensures permanent magnet trough apart from rotor inner circle
The further development length of increase permanent magnet trough on the premise of the c, turned with improving magneto output
The ability of square.Additionally, also medial launder 2 can be set square groove, and as straight groove, so setting can
Simplify the difficulty to arc-shaped permanent magnet processing, and be easy to the installation of permanent magnet to medial launder 2.Ability
Field technique personnel are it is understood that can be according to setting medial launder of different shapes 2 the need for difference.
In preferred embodiment, the symmetry axis of the medial launder 2 of each permanent magnet trough and the two of the permanent magnet trough
The symmetrical overlapping of axles of section square groove 1, i.e. each permanent magnet trough is symmetrical structure.By will forever
Magnet slot is set to symmetrical mode and can improve the uniformity of permanent magnet distribution.
For reduces cost, the magnetic energy of the permanent magnet in square groove 1 can be set in a particular embodiment
It is less than the magnetic energy of the permanent magnet in medial launder 2.The permanent magnet material in square groove 1 can specifically be selected
Permanent-magnet ferrite material is selected as, and the permanent magnet material in medial launder 2 is set as Nd-Fe-B permanent magnet material,
But the application is not limited in the permanent magnet of above-mentioned material.
On the basis of above-mentioned technical proposal, another inventive point of the application is that square groove 1 is corresponding
Rotor is set to straightway at outer ring.Specifically, the straightway is the string of former round rotor, i.e. the rotor
Outer ring profile there is straightway, so set can increase the rotor portion of permanent magnet end correspondence position with
Air gap separation between stator, so as to drop low magnetic density, reduces iron loss phenomenon.
In one embodiment, the straightway of rotor is be arranged in parallel with the end of square groove 1, this is straight
Line segment is positioned opposite with square groove 1.Further, by the two neighboring side of two adjacent permanent magnets groove
Shape groove 1 is set to off being arranged symmetrically in the perpendicular bisector of the straightway of outer ring, i.e. the straightway of the rotor outer ring
Perpendicular bisector overlapped with Second bobbin diameter in above-described embodiment.Whole rotor can be set to by above-mentioned setting
Structure on diameter symmetry so that the Distribution of Magnetic Field of rotor is symmetrical, to improve the stability of motor work.
In order to reduce the noise of motor, the length of the straightway of rotor outer ring is set greater than in the application
The distance between two relative outer side edges of square groove 1 of the straightway, two square grooves 1 herein are
The two neighboring square groove 1 of two adjacent permanent magnet troughs, outer side edges are that the two square grooves 1 are relatively remote
On one side.The air gap separation that can reduce between straightway end and stator is so set, so as to weaken permanent magnetism
The air gap flux density of body end portion correspondence position, reduces corresponding electromagnetic force amplitude, and then reduce the vibration of motor
Noise.Line correspondence section with the length of square groove 1 than can also be illustrated by other parameter, for example
The radian of two vertex correspondences of the outer side edges of square groove 1 being arranged in parallel is set to θ c, and by straight line
The corresponding maximum radian of section is set to θ r, and sets θ r >=θ c.
In further embodiment, rotor outer ring is set to the structure of straightway arrangement alternate with arc section.
In practice also dependent on difference the need for arc section is improved, and in protection domain.
Be provided with every magnetic bridge between the straightway of square groove 1 and rotor outer ring, and by this every magnetic bridge thickness
Degree is set greater than 0.35mm, i.e., more than the thickness of a piece of silicon steel sheet, and the thickness of each silicon steel sheet is
0.35mm.In order to reduce brow leakage, should be as small as possible every the thickness of magnetic bridge.
In order to increase the intensity of the rotor core every magnetic bridge position, in preferred embodiment, arc generation is used
For the linear structure of the end of square groove 1, i.e. square groove 1 near the end of rotor outer circle be arc section, knot
Close and state part, it is necessary to ensure that the minimum range of arc to the straightway of rotor is thick more than a piece of silicon steel sheet
Degree.
About more than 20%, electromagnetic force width can be reduced using the iron loss of the rotor motor disclosed in above-described embodiment
Value reduces by more than 10%.
Additionally, the application also protects a kind of motor, the motor has rotor disclosed in above-mentioned implementation, because
This, the motor with the rotor also has above-mentioned all technique effects, and this is no longer going to repeat them.
Each embodiment is described by the way of progressive in this specification, and each embodiment is stressed
The difference with other embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use
The present invention.Various modifications to these embodiments will be for those skilled in the art aobvious and easy
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the most wide scope consistent with principles disclosed herein and features of novelty.
Claims (13)
1. a kind of rotor of motor, including rotor core and permanent magnet, the rotor core are circumferentially uniform
Multiple permanent magnet troughs are provided with, the permanent magnet is embedded in the permanent magnet trough, it is characterised in that
The permanent magnet trough includes：Two sections of square grooves (1), and two sections of square grooves (1) are on turning
One diameter symmetry arrangement of son；
Two neighboring described square groove (1) parallel arrangement of the two neighboring permanent magnet trough, and on
Another diameter symmetry arrangement of rotor.
2. rotor according to claim 1, it is characterised in that the permanent magnet trough also includes and two
Duan Suoshu square grooves (1) are near the connected medial launder (2) in the one end in the rotor center of circle.
3. rotor according to claim 2, it is characterised in that the medial launder (2) with two
Square groove (1) connection.
4. rotor according to claim 2, it is characterised in that the medial launder (2) is arc
Groove or square groove.
5. rotor according to claim 4, it is characterised in that the medial launder (2) of the permanent magnet trough
Symmetry axis and the permanent magnet trough two sections of symmetrical overlapping of axles of square groove (1).
6. rotor according to claim 2, it is characterised in that the interior permanent magnetism of the square groove (1)
Magnetic energy of the magnetic energy of body less than the medial launder (2) interior permanent magnet.
7. the rotor according to claim any one of 1-6, it is characterised in that the square groove (1)
It is straightway at corresponding rotor outer ring.
8. rotor according to claim 7, it is characterised in that the straightway and the square groove
(1) end is parallel, and the two neighboring described square groove (1) of the two neighboring permanent magnet trough is closed
It is arranged symmetrically in the perpendicular bisector of the straightway of rotor outer ring.
9. rotor according to claim 8, it is characterised in that the length of the straightway be more than with
The distance between two relative outer side edges of the square groove (1) of the straightway.
10. rotor according to claim 7, it is characterised in that rotor outer ring is the straightway
Arrangement alternate with arc section.
11. rotors according to claim 7, it is characterised in that the square groove (1) and rotor
It is provided with every magnetic bridge between the straightway of outer ring, and the thickness every magnetic bridge is more than 0.35mm.
12. rotors according to claim 11, it is characterised in that the square groove (1) with turn
The corresponding end in sub- outer ring is arc section.
A kind of 13. motors, including rotor, it is characterised in that the rotor is that claim 1-12 such as appoints
Rotor described in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510469166.2A CN106712342A (en) | 2015-07-31 | 2015-07-31 | Motor and rotor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510469166.2A CN106712342A (en) | 2015-07-31 | 2015-07-31 | Motor and rotor thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106712342A true CN106712342A (en) | 2017-05-24 |
Family
ID=58929760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510469166.2A Pending CN106712342A (en) | 2015-07-31 | 2015-07-31 | Motor and rotor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106712342A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107528400A (en) * | 2017-09-30 | 2017-12-29 | 广东美芝制冷设备有限公司 | Rotor, magneto and compressor |
| CN109149891A (en) * | 2018-10-29 | 2019-01-04 | 哈尔滨理工大学 | A kind of New-type asynchronous starting permanent-magnet synchronous motor rotor structure |
| WO2019062130A1 (en) * | 2017-09-30 | 2019-04-04 | 广东美芝制冷设备有限公司 | Motor rotor, permanent magnet motor, and compressor |
| WO2022067917A1 (en) * | 2020-09-29 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | Linear motor |
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| CN202550728U (en) * | 2012-03-06 | 2012-11-21 | 深圳市福义乐磁性材料有限公司 | Rotor punching sheet structure of permanent-magnet synchronous motor |
| CN103166344A (en) * | 2011-12-09 | 2013-06-19 | 安徽明腾永磁机电设备有限公司 | Rotor punching sheet for permanent magnet motor and rotor |
| CN103475124A (en) * | 2012-06-06 | 2013-12-25 | 日立空调·家用电器株式会社 | Permanent magnet synchronous motor |
| CN103973004A (en) * | 2013-01-31 | 2014-08-06 | 艾默生环境优化技术(苏州)有限公司 | Permanent magnet motor rotor assembly and corresponding permanent magnet motor |
| CN103973060A (en) * | 2013-02-04 | 2014-08-06 | 东芝开利株式会社 | Permanent magnet motor, hermetic compressor and refrigeration cycle device |
| JP2015133839A (en) * | 2014-01-14 | 2015-07-23 | 株式会社ジェイテクト | Magnet-embedded rotor |
| CN204794431U (en) * | 2015-07-31 | 2015-11-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor and rotor thereof |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103166344A (en) * | 2011-12-09 | 2013-06-19 | 安徽明腾永磁机电设备有限公司 | Rotor punching sheet for permanent magnet motor and rotor |
| CN202550728U (en) * | 2012-03-06 | 2012-11-21 | 深圳市福义乐磁性材料有限公司 | Rotor punching sheet structure of permanent-magnet synchronous motor |
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| JP2015133839A (en) * | 2014-01-14 | 2015-07-23 | 株式会社ジェイテクト | Magnet-embedded rotor |
| CN204794431U (en) * | 2015-07-31 | 2015-11-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor and rotor thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107528400A (en) * | 2017-09-30 | 2017-12-29 | 广东美芝制冷设备有限公司 | Rotor, magneto and compressor |
| WO2019062130A1 (en) * | 2017-09-30 | 2019-04-04 | 广东美芝制冷设备有限公司 | Motor rotor, permanent magnet motor, and compressor |
| CN107528400B (en) * | 2017-09-30 | 2021-07-30 | 广东美芝制冷设备有限公司 | Motor rotor, permanent magnet motor and compressor |
| CN109149891A (en) * | 2018-10-29 | 2019-01-04 | 哈尔滨理工大学 | A kind of New-type asynchronous starting permanent-magnet synchronous motor rotor structure |
| WO2022067917A1 (en) * | 2020-09-29 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | Linear motor |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
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| RJ01 | Rejection of invention patent application after publication |