CN106208425A - Rotor, stator and motor - Google Patents
Rotor, stator and motor Download PDFInfo
- Publication number
- CN106208425A CN106208425A CN201610635356.1A CN201610635356A CN106208425A CN 106208425 A CN106208425 A CN 106208425A CN 201610635356 A CN201610635356 A CN 201610635356A CN 106208425 A CN106208425 A CN 106208425A
- Authority
- CN
- China
- Prior art keywords
- rotor
- tooth
- stator
- flank
- dentalation
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
Abstract
The open a kind of rotor of the present invention, stator and motor, wherein, rotor includes rotor body, there is on rotor body the circumferential part of close stator, being provided with dentalation on circumferential part, dentalation includes the rotor tooth that the circumference in some circumferentially portions sets gradually, and rotor tooth has first flank of tooth of the direction of rotation towards rotor and second flank of tooth of the direction of rotation of rotor dorsad, wherein, the width of first flank of tooth is more than the width of second flank of tooth.Stator includes stator body, stator body arranges some stator tooths near one end of rotor, stator tooth has the 3rd flank of tooth of the direction of rotation towards rotor and the 4th flank of tooth of the direction of rotation of rotor dorsad, and wherein, the width of the 3rd flank of tooth is less than the width of the 4th flank of tooth.An employing dentalation selected by rotor and stator in motor.The present invention, can be with lifting motor torque current ratio by arranging the directive dentalation of tool on rotor or stator, and motor iron loss does not increases simultaneously, effective lifting motor performance and characteristic.
Description
Technical field
The present invention relates to technical field of motors, particularly relate to a kind of rotor, stator and motor.
Background technology
At present, the development of permagnetic synchronous motor reaches its maturity, and its performance also steps up, and is therefore widely used in each
Industry.But the performance of permagnetic synchronous motor needs for constantly promoting, the ever-increasing market demand so could be met.
The performance promoting permagnetic synchronous motor is realized by controller mostly, such as, solves to start difficulty by controller
Topic, a fluctuation of speed difficult problem, make up torque pulsation defect, improve torque current than etc..And improve from design of electrical motor source, have
The level being beneficial to whole product improves, and reduces and controls to drive difficulty.Wherein, the torque current ratio of lifting motor, it is an up motor
Stock utilization and a key of performance.
The rotor of existing permagnetic synchronous motor is carried out subregion analysis when electromagnetic action, and torque is exported by part
For just contributing, part plays magnetic conduction effect, substantially without torque output capability, and the most negative contribution of part, the most existing permanent magnetism
The torque current ratio of synchronous motor is relatively low, causes input current relatively big, copper olse, controller loss the biggest, impact electricity
Machine performance development.
Summary of the invention
It is an object of the present invention to provide a kind of rotor, it effectively can promote on the premise of not increasing motor iron loss
The torque current ratio of motor, and then promote the performance of whole motor.
Further object is that a kind of stator of offer, it can be with the torque current ratio of lifting motor.
A further object of the present invention is to provide a kind of motor, and its torque current is higher, and input current is less, copper loss
Loss with controller is little.
For reaching this purpose, the present invention by the following technical solutions:
On the one hand, it is provided that a kind of rotor, including rotor body, described rotor body has the circumferential part of close stator,
Being provided with dentalation on described circumferential part, described dentalation includes what some circumferences along described circumferential part set gradually
Rotor tooth, described rotor tooth has first flank of tooth of the direction of rotation towards rotor and the second tooth of the direction of rotation of rotor dorsad
Face, wherein, the width of described first flank of tooth is more than the width of described second flank of tooth.
On the other hand, also provide for a kind of stator, including stator body, if described stator body is arranged near one end of rotor
Dry stator tooth, described stator tooth have the direction of rotation towards rotor the 3rd flank of tooth and dorsad rotor direction of rotation the 4th
The flank of tooth, wherein, the width of described 3rd flank of tooth is less than the width of described 4th flank of tooth.
Another further aspect, also provides for a kind of motor, including rotor and stator, wherein, rotor use rotor as above or
Stator uses stator as above.
The invention have the benefit that the present invention to pass through on rotor or stator and the directive dentalation of tool be set,
Negative contribution can be removed, increase and just contribute, and torque portions will not be contributed to be converted into just contribute, and then lifting motor torque current
Ratio, motor iron loss does not increases simultaneously, effective lifting motor performance and characteristic.
Accompanying drawing explanation
Fig. 1 is the structural representation of the rotor described in one embodiment of the invention.
Fig. 2 is the structural representation of the rotor described in another embodiment of the present invention.
Fig. 3 is the close-up schematic view at the X in Fig. 2.
Fig. 4 is the structural representation of the rotor described in further embodiment of this invention.
Fig. 5 is the close-up schematic view at the Y in Fig. 4.
Fig. 6 is the structural representation of the stator described in the embodiment of the present invention.
Fig. 7 is the close-up schematic view at the Z in Fig. 6.
Fig. 8 is the close-up schematic view at the W in Fig. 7.
In Fig. 1 to 8:
110, rotor body；120, rotor tooth；121, first flank of tooth；122, second flank of tooth；123, crown circle；124, tooth root
Circle；130, trimming portion；140, rotor interpolar；150, rotor joint；160, equivalent circular；170, magnet steel groove；
210, stator body；220, stator tooth；221, the 3rd flank of tooth；222, the 4th flank of tooth.
Detailed description of the invention
In describing the invention, it is to be understood that orientation or the position relationship of the instruction such as term " outward ", " interior " are base
In orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description rather than instruction or hint
The device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this
The restriction of invention.
Additionally, term " first ", " second ", " the 3rd ", " the 4th " are only used for describing purpose, and it is not intended that instruction or
Hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", " second ", "
Three ", the feature of " the 4th " can express or implicitly include one or more this feature.
In describing the invention, unless otherwise clearly defined and limited, term " connects ", " fixing " should do broad sense reason
Solve, connect for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be to be mechanically connected, it is also possible to be electricity
Connect；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals or two
The interaction relationship of element.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition
Concrete meaning in invention.
Further illustrate technical scheme below in conjunction with the accompanying drawings and by detailed description of the invention.
As Fig. 1 is to shown in 5, and the offer one rotor of the embodiment of the present invention, including rotor body 110, on rotor body 110
Having the circumferential part of close stator, be provided with dentalation on circumferential part, dentalation includes the circumference in some circumferentially portions
The rotor tooth 120 set gradually, rotor tooth 120 has first flank of tooth 121 and the rotor dorsad of the direction of rotation towards rotor
Second flank of tooth 122 of direction of rotation, wherein, the width of first flank of tooth 121 is more than the width of second flank of tooth 122.By at rotor
Tool directive dentalation is set on body 110, i.e. towards the face width of tooth of direction of rotation of rotor, direction of rotation dorsad
The flank of tooth is narrow, on the premise of can making rotor external diameter not increasing in equivalence, removes negative contribution, increases and just contribute, and will not contribute and turn
Square is partially converted into just to be contributed, and then lifting motor torque current ratio, and motor iron loss does not increases simultaneously, effective lifting motor performance
And characteristic.
In the present embodiment, rotor is applied to inner rotor motor, and now circumferential part is arranged on the outer rim of rotor body 110,
I.e. dentalation is arranged on the outer rim of rotor body 110.But rotor is not limited to be applied to inner rotor motor, it is also possible to be applied to
External rotor electric machine, when rotor is applied to external rotor electric machine, circumferential part is arranged on the inner edge of rotor body, i.e. dentalation and arranges
Inner edge at rotor body.
In one embodiment of this invention, as it is shown in figure 1, dentalation is along the circumferential ring of the circumferential part of rotor body 110
Shape is arranged.By dentalation is arranged along the circumference annular of the circumferential part of rotor body 110 so that whole rotor body 110
Circumferential part be all coated with by dentalation, so can make the lifting motor torque while not increasing motor iron loss of whole rotor
Current ratio, and then the performance of lifting motor.
In a preferred embodiment of the invention, as shown in Figures 2 and 3, between the circumference of the circumferential part of rotor body 110
Every arranging multiple dentalation, each dentalation just the widest region to a rotor pole of rotor body 110, phase
Between adjacent two dentalations, there is trimming portion 130, just region to the rotor interpolar 140 of rotor body 110, trimming portion 130.
By arranging trimming portion 130 in the region of rotor interpolar 140, trimming portion 130 makes the circumferential part of the rotor body 110 in this region
On be not provided with rotor tooth 120, i.e. trimming portion 130 and formed every magnetic bridge, torque pulsation can be effectively reduced every magnetic bridge, reduce leakage
Magnetic.
In the present embodiment, axially extending along rotor body 110 of the length in trimming portion 130.Axially extending tool herein
Body refers to that trimming portion 130 can be arranged, when trimming portion 130 is along rotor body 110 along the axially consecutive of rotor body 110 or interruption
Axially consecutive when arranging, illustrate that the length in trimming portion 130 is equal with the length of rotor body 110；When trimming portion 130 is along rotor basis
When axially interruption is arranged of body 110, illustrates the length length less than rotor body 110 in trimming portion 130.Above-mentioned situation is only limitted to
Rotor tooth 120 is that (rotor tooth 120 specifically refers to rotor for straight tooth structure along the axially arranged straight tooth structure of rotor body 110
The length direction of tooth 120 is parallel with the axis of rotor body 110), if rotor tooth 120 is provided on rotor body 110
(rotor tooth 120 specifically refers to the axis of the length direction of rotor tooth 120 and rotor body 110 not for helical teeth structure to helical teeth structure
Parallel), then, trimming portion 130 is arranged between adjacent two dentalations along the length direction of rotor tooth 120.
The circumferential angle of rotor body 110 shared by rotor tooth 120 is A, and wherein, 12 °/P ＜ 17.2 °/P of A ＜, P is rotor
Number of pole-pairs, the circumferential angle of the widest each shared rotor body is D, 100 °/P ＜ 110 °/P of D ＜.In the present embodiment,
The widest rotor pole correspondence referring to rotor produces the width of the part of electrode effect, as in figure 2 it is shown, a rotor pole
For a magnet steel groove 170 in rotor body 110, its can produce the part of electrode effect with on the circumferential part of rotor body 110
The each dentalation arranged is corresponding.By the circumferential angle A of rotor body 110 shared by rotor tooth 120 is set to 12 °/P
＜ A ＜ 17.2 °, can make whole rotor by motor torque current ratio lifting 23% while not increasing motor iron loss, greatly
The performance of lifting motor.
In the present embodiment, number of pole-pairs P=2 of rotor, corresponding, the quantity in trimming portion 130 is four.One rotor pole
For a magnet steel groove 170 in rotor body 110, every pair of rotor pole of rotor is made up of the magnet steel groove 170 that two magnetic poles are different,
Each magnet steel groove 170 is just provided with dentalation to the part of the circumferential part of rotor body 110.Therefore, 6 ° of ＜ A ＜ 8.6 °,
50 ° of ＜ D ＜ 55 °.
First flank of tooth 121 is the circular arc of the side protrusion at the center being directed away from rotor body 110, and the diameter of circular arc is little
In equivalent circular 160 diameter of rotor, wherein, the width of second flank of tooth 122 is F, L ＜ F ＜ 5L/3, and L is motor effective air gap width
Degree, motor effective air gap width refers to the distance between the equivalent circular 160 of stator and rotor in motor.
In the present embodiment, rotor tooth 120 has crown and a tooth root, the center of circle of rotor body 110 to crown with to tooth root
Tooth depth B that range difference is rotor tooth 120, L/4 ＜ B ＜ L, wherein, L is motor effective air gap width.Concrete, rotor body
The circumference at the crown place of 110 is crown circle 123, and the circumference at the tooth root place of rotor body 120 is root circle 124, crown circle
123 is all concentric with the center of circle of rotor body 110 with the center of circle of root circle 124.
In another embodiment of the present invention, the present embodiment is essentially identical with the structure of above-described embodiment, and difference only exists
In, in the present embodiment, the crown of rotor tooth 120 is scabbled process, and as shown in Figures 4 and 5, first flank of tooth 121 is away from rotor originally
One end of body 110 is connected by rotor joint 150 away from one end of rotor body 110 with second flank of tooth 122.By by first
Both the flank of tooth 121 and second flank of tooth 122 are connected by rotor joint 150 away from one end of rotor body 110, i.e. cut rotor
The tip portions of tooth 120, so can improve rotor manufacturability, reduces assembly difficulty.Rotor joint 150 and the equivalence of rotor
Circle 160 between spacing be G, E/2 ＜ G ＜ E, E≤B/2, wherein, E be the tip portions of rotor tooth 120 crown circle 123 with
Distance between the equivalent circular 160 of rotor.Preferably, rotor joint 150 is arcuate structure or planar structure.
In the present embodiment, the length of rotor joint 150 extends along the length direction of rotor tooth 120.Extension herein
On the length direction being arranged on rotor tooth 120 referring to that rotor joint 150 is continuous or be interrupted, if arranged continuously, then
The length of rotor joint 150, equal to the length of rotor tooth 120, is arranged if be interrupted, then the length of rotor joint 150 is little
Length in rotor tooth 120.
The embodiment of the present invention also provides for a kind of stator, as Fig. 6 is to shown in 8, and this stator includes stator body 210, and stator is originally
Body 210 arranges some stator tooths 220 near one end of rotor, and stator tooth has the 3rd flank of tooth of the direction of rotation towards rotor
221 and the 4th flank of tooth 222 of the direction of rotation of rotor dorsad, wherein, the width of the 3rd flank of tooth 221 is less than the 4th flank of tooth 222
Width.By arranging the directive dentalation of tool on stator body 210, and the flank of tooth of the direction of rotation towards rotor
Narrow, the face width of tooth of direction of rotation dorsad, can be with lifting motor torque current ratio, motor iron loss does not increases simultaneously, effectively promotes electricity
Machine performance and characteristic.
In the present embodiment, stator body 210 is concaved with arc sections, some stator tooths 220 near one end of rotor
Arcuate directions along arc sections is successively set in arc sections.
In a preferred embodiment of the invention, the 3rd flank of tooth 221 is away from one end and the 4th tooth of stator body 210
Face 222 is connected by stator connecting portion (not shown) away from one end of stator body 210, and the length of stator connecting portion is along fixed
The length direction of sub-tooth 220 extends.By by both the 3rd flank of tooth 221 and the 4th flank of tooth 222 away from one end of stator body 210
Connected by stator connecting portion, i.e. cut the crown of stator tooth, so can improve stator manufacturability, reduce assembly difficulty.
Embodiments of the invention also provide for a kind of motor, and motor includes stator and rotor, and its rotor uses performed as described above
Being provided with dentalation on the rotor of example, i.e. rotor, the structure of rotor can refer to Fig. 1 to 5 and above-described embodiment, the most superfluous
State the concrete structure of rotor, and stator uses the structure of conventional stator.
Embodiments of the invention also provide for a kind of motor, and motor includes stator and rotor, and wherein stator uses performed as described above
Being provided with dentalation on the stator of example, i.e. stator, the structure of stator can refer to Fig. 6 to 8 and above-described embodiment, the most superfluous
State the concrete structure of stator, and rotor uses the structure of conventional rotor.
In a preferred embodiment of the invention, when stator is provided with dentalation when, the rotor of rotor is originally
The outer rim interval of body arranges multiple trimming portion, just region to the rotor interpolar of rotor body, trimming portion.
In the present embodiment, axially extending along described rotor body of the length in described trimming portion.
The know-why of the present invention is described above in association with specific embodiment.These describe and are intended merely to explain the present invention's
Principle, and limiting the scope of the invention can not be construed to by any way.Based on explanation herein, the technology of this area
Personnel need not pay performing creative labour can associate other detailed description of the invention of the present invention, and these modes fall within
Within protection scope of the present invention.
Claims (14)
1. a rotor, including rotor body, it is characterised in that have the circumferential part of close stator on described rotor body,
Being provided with dentalation on described circumferential part, described dentalation includes that what some circumferences along described circumferential part set gradually turns
Sub-tooth, described rotor tooth has first flank of tooth of the direction of rotation towards rotor and the second tooth of the direction of rotation of rotor dorsad
Face, wherein, the width of described first flank of tooth is more than the width of described second flank of tooth.
Rotor the most according to claim 1, it is characterised in that described dentalation is along the described circumference of described rotor body
The circumference annular in portion is arranged.
Rotor the most according to claim 1, it is characterised in that the circumferentially-spaced of described circumferential part of described rotor body sets
Put multiple described dentalation, each described dentalation just the widest district to a rotor pole of described rotor body
Territory, has trimming portion between adjacent two described dentalations, described trimming portion is just to the rotor interpolar of described rotor body
Region.
Rotor the most according to claim 3, it is characterised in that the circle of each the widest described shared described rotor body
Week, angle was D, and 100 °/P ＜ 110 °/P of D ＜, wherein, P is the number of pole-pairs of rotor.
Rotor the most according to claim 1, it is characterised in that described rotor tooth has crown and tooth root, described rotor is originally
The center of circle of body is to described crown and tooth depth B that range difference is described rotor tooth to described tooth root, and L/4 ＜ B ＜ L, wherein, L is
The effective air gap width of motor.
Rotor the most according to claim 1, it is characterised in that described first flank of tooth away from described rotor body one end with
Described second flank of tooth is connected by rotor joint away from one end of described rotor body.
Rotor the most according to claim 6, it is characterised in that between the equivalent circular of described rotor joint and described rotor
Spacing be G, E/2 ＜ G ＜ E, E≤B/2, wherein, E be between the crown of described rotor tooth and the equivalent circular of described rotor away from
From, B is the tooth depth of described rotor tooth.
8. according to the rotor described in any one of claim 1 to 7, it is characterised in that described first flank of tooth is described for being directed away from
The circular arc that the side at the center of rotor body is protruded, the diameter of described circular arc is not more than the equivalent diameter of a circle of described rotor.
9. according to the rotor described in any one of claim 1 to 7, it is characterised in that described rotor body shared by described rotor tooth
Circumferential angle be A, wherein, 12 °/P ＜ 17.2 °/P of A ＜, P is the number of pole-pairs of rotor.
10. according to the rotor described in any one of claim 1 to 7, it is characterised in that the width of described second flank of tooth is F, L ＜ F
＜ 5L/3, wherein, L is the effective air gap width of motor.
11. 1 kinds of stators, including stator body, it is characterised in that it is some fixed that described stator body is arranged near one end of rotor
Sub-tooth, described stator tooth has the 3rd flank of tooth of the direction of rotation towards rotor and the 4th tooth of the direction of rotation of rotor dorsad
Face, wherein, the width of described 3rd flank of tooth is less than the width of described 4th flank of tooth.
12. stators according to claim 11, it is characterised in that described 3rd flank of tooth is away from one end of described stator body
It is connected by stator connecting portion away from one end of described stator body with described 4th flank of tooth.
13. 1 kinds of motors, including rotor and stator, it is characterised in that described rotor uses such as any one of claim 1 to 10 institute
The rotor stated or described stator use the stator as described in any one of claim 11 to 12.
14. motors according to claim 13, it is characterised in that the stator body of described stator is near the one of described rotor
End arranges some stator tooths, and the rotor body of described rotor has the circumferential part near described stator, the circumference of described circumferential part
Interval arranges multiple trimming portion, just region to the rotor interpolar of described rotor body, described trimming portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610635356.1A CN106208425B (en) | 2016-08-04 | 2016-08-04 | Rotor, stator and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610635356.1A CN106208425B (en) | 2016-08-04 | 2016-08-04 | Rotor, stator and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106208425A true CN106208425A (en) | 2016-12-07 |
| CN106208425B CN106208425B (en) | 2019-07-09 |
Family
ID=57497074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610635356.1A Active CN106208425B (en) | 2016-08-04 | 2016-08-04 | Rotor, stator and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106208425B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5922470B2 (en) * | 1975-10-03 | 1984-05-26 | 松下電器産業株式会社 | frequency generator |
| US20040130231A1 (en) * | 2001-03-02 | 2004-07-08 | Antonino Fratta | Synchronous electric machine |
| CN101752980A (en) * | 2008-12-02 | 2010-06-23 | 日本电产伺服有限公司 | Permanent-magnet rotary electric machine |
| CN104300710A (en) * | 2013-07-17 | 2015-01-21 | 丹佛斯（天津）有限公司 | Rotor, built-in permanent magnet motor and compressor |
| CN205992805U (en) * | 2016-08-04 | 2017-03-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor, stator and motor |
-
2016
- 2016-08-04 CN CN201610635356.1A patent/CN106208425B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5922470B2 (en) * | 1975-10-03 | 1984-05-26 | 松下電器産業株式会社 | frequency generator |
| US20040130231A1 (en) * | 2001-03-02 | 2004-07-08 | Antonino Fratta | Synchronous electric machine |
| CN101752980A (en) * | 2008-12-02 | 2010-06-23 | 日本电产伺服有限公司 | Permanent-magnet rotary electric machine |
| CN104300710A (en) * | 2013-07-17 | 2015-01-21 | 丹佛斯（天津）有限公司 | Rotor, built-in permanent magnet motor and compressor |
| CN205992805U (en) * | 2016-08-04 | 2017-03-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor, stator and motor |
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| Publication number | Publication date |
|---|---|
| CN106208425B (en) | 2019-07-09 |
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Effective date of registration: 20190508 Address after: 519070, Jinji Hill Road, front hill, Zhuhai, Guangdong Applicant after: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI Applicant after: Zhuhai Gree Energy Saving & Refrigerating Technology Resarch Center Co., Ltd. Address before: 519070 science and technology building, 789 Jinji Road, Qianshan, Zhuhai, Guangdong Applicant before: Zhuhai Gree Energy Saving & Refrigerating Technology Resarch Center Co., Ltd. |
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