CN206135581U - Electric motor rotor and permanent -magnet machine - Google Patents
Electric motor rotor and permanent -magnet machine Download PDFInfo
- Publication number
- CN206135581U CN206135581U CN201621074620.0U CN201621074620U CN206135581U CN 206135581 U CN206135581 U CN 206135581U CN 201621074620 U CN201621074620 U CN 201621074620U CN 206135581 U CN206135581 U CN 206135581U
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- China
- Prior art keywords
- arc
- permanent magnet
- shaped permanent
- rotor
- midpoint
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Abstract
The utility model provides an electric motor rotor and permanent -magnet machine, wherein, electric motor rotor includes: rotor core, a N arc -shaped permanent magnet, N is individual arc -shaped permanent magnet with rotor core's rotor center is arranged according to the circumferencial direction for the centre of a circle and is set up rotor core is last, wherein any arc -shaped permanent magnet is arc, any on the cross -section of perpendicular to rotor center arc -shaped permanent magnet magnetizes along the tangential, wherein, wantonly two are close to mutually among the arc -shaped permanent magnet one arc -shaped permanent magnet's convex surface and another arc -shaped permanent magnet's relative the setting and polarity identical of concave surface, wherein, N is for being more than or equal to 4 even number. According to the utility model discloses an electric motor rotor and permanent -magnet machine can reduce the motor iron loss, improve permanent -magnet machine's efficiency.
Description
Technical field
This utility model is related to technical field of motors, in particular to a kind of rotor and magneto.
Background technology
The motor of the tangential magnetization configuration of permanent magnet is due to " poly- magnetic " effect, producing compared with radial structure higher
Air gap flux density so that motor has larger torque/electric current ratio and torque/volume ratio, is applied to servo system more and more
The occasions such as system, electric propulsion, office automation, household electrical appliance.
It is general to need to increase the number of pole-pairs of motor to preferably play " poly- magnetic " effect of tangential permanent magnet motor, but with
The increase of number of pole-pairs, motor iron loss substantially can be increased under same rotational speed, cause electric efficiency to decline.
Utility model content
This utility model aims to provide a kind of rotor and magneto, and to solve, magneto is inefficient to ask
Topic.
This utility model provides a kind of rotor, including：
Rotor core；
N number of arc-shaped permanent magnet, N number of arc-shaped permanent magnet are circumferentially square by the center of circle of the rotor center of the rotor core
It is arranged on the rotor core to arrangement, arc-shaped permanent magnet described in any of which is being on the section of rotor center
Arc, any one described arc-shaped permanent magnet tangentially magnetize；
Wherein, any two close to the arc-shaped permanent magnet in an arc-shaped permanent magnet convex surface and another
The concave surface of the arc-shaped permanent magnet is oppositely arranged and polarity is identical；
Wherein, N is the even number more than or equal to 4.
Further, the rotor core can be rotated along direction of rotation, the convex surface of arc-shaped permanent magnet described in any of which
The front side of the concave surface of the arc-shaped permanent magnet is located at along the direction of rotation.
Further, 2.5D >=H >=1.5D, wherein D represent the arc-shaped permanent magnet perpendicular to the section of rotor center
On thickness, H represents the concave surface of the tangent line with the convex surface peak of the arc-shaped permanent magnet as point of contact and the arc-shaped permanent magnet
The distance between minimum point.
Further, 2D >=H >=1.8D.
Further, any one arc-shaped permanent magnet is with towards the first end on the outside of the rotor core and towards described turn
The second end on the inside of sub- iron core.
Further, the midpoint between the concave surface and convex surface of the first end of the arc-shaped permanent magnet be the first midpoint, the institute
It is the second midpoint to state midpoint between the concave surface and convex surface at the second end of arc-shaped permanent magnet, first midpoint, in described second
Point is conllinear with the rotor center.
Further, arc-shaped permanent magnet described at least one in the thickness on the section of rotor center from the second end
Gradually increase to first end.
Further, 0.25 >=C*H/M2>=0.1, wherein, M represents the magnetic field focus and the arc of the arc-shaped permanent magnet
The distance between convex surface of shape permanent magnet, H represent tangent line with the convex surface peak of the arc-shaped permanent magnet as point of contact with it is described
The distance between concave surface minimum point of arc-shaped permanent magnet, C represent the arc-shaped permanent magnet on the section of rotor center
Width.
Further, the midpoint between the concave surface and convex surface of the first end of the arc-shaped permanent magnet be the first midpoint, the institute
The midpoint stated between the concave surface and convex surface at the second end of arc-shaped permanent magnet is the second midpoint, by first midpoint and the rotor
The angle that the first line segment being centrally formed and the second line segment formed with the rotor center by second midpoint are in is θ,
25°≥θ≥10°。
Further, as the center of circle, circumferentially direction is equal with the rotor center of the rotor core for N number of arc-shaped permanent magnet
Even arrangement.
Further, the rotor core can be rotated along direction of rotation, and the first end of the arc-shaped permanent magnet is along the rotation
Turn front side of the direction positioned at the second end of the arc-shaped permanent magnet.
This utility model provides a kind of magneto, including motor stator and rotor described above.
According to rotor of the present utility model and magneto, motor iron loss can be reduced, improve the effect of magneto
Rate.
Description of the drawings
The accompanying drawing for constituting the part of the application is used for providing further understanding to of the present utility model, of the present utility model
Schematic description and description is used to explain this utility model, does not constitute to improper restriction of the present utility model.In accompanying drawing
In：
Fig. 1 is the structural representation of the rotor according to this utility model one embodiment；
Fig. 2 be in Fig. 1 motor magnetic linkage with H/D variation diagrams；
Fig. 3 is the structural representation of the rotor according to this utility model another embodiment；
Fig. 4 is the structural representation of the rotor according to this utility model another embodiment；
Fig. 5 is the structural representation of the rotor according to this utility model further embodiment；
Description of reference numerals：
1st, arc-shaped permanent magnet；11st, convex surface；12nd, concave surface；13rd, the first midpoint；14th, the second midpoint；15th, peak；16th,
One end；17th, the second end；18th, minimum point；19th, magnetic field focus；2nd, rotor core；3rd, rotor center；41st, the first line segment；42nd,
Two line segments；5th, direction of rotation.
Specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments describing this utility model in detail.
As shown in figure 1, rotor core 2 and six arc-shaped permanent magnets 1 are included according to rotor of the present utility model, six
With the rotor center 3 of the rotor core 2, as the center of circle, circumferentially direction arrangement is arranged on the rotor core 2 to arc-shaped permanent magnet 1
On.Certainly, in other optional embodiments, the quantity of the arc-shaped permanent magnet 1 can be 4,8 or other be more than or
Positive integer equal to 4.The arc-shaped permanent magnet 1 can be tangentially magnetized non-rare earth permanent magnets.
Any one described arc-shaped permanent magnet 1 is curved on the section of rotor center 3.Any two close to institute
State the convex surface 11 of an arc-shaped permanent magnet 1 in arc-shaped permanent magnet 1 and 12 phase of concave surface of arc-shaped permanent magnet another described 1
To arranging.Any two close to the arc-shaped permanent magnet 1 in an arc-shaped permanent magnet 1 convex surface 11 and another institute
The polarity for stating the concave surface 12 of arc-shaped permanent magnet 1 is identical.
Specifically, in Fig. 1 directly over arc-shaped permanent magnet 1 convex surface 11 polarity be S poles, the polarity of its concave surface 12
For N poles.It is adjacent and in Fig. 1 directly over arc-shaped permanent magnet 1 left side arc-shaped permanent magnet 1 concave surface 12 be located at Fig. 1
The convex surface 11 of the arc-shaped permanent magnet 1 of middle surface is relative.The left side of adjacent and the surface in Fig. 1 arc-shaped permanent magnet 1
The polarity of the concave surface 12 of arc-shaped permanent magnet 1 is S poles.The arc on the right side of adjacent and the surface in Fig. 1 arc-shaped permanent magnet 1
The convex surface 11 of permanent magnet 1 is relative with the concave surface 12 of the arc-shaped permanent magnet 1 of surface in Fig. 1.It is adjacent and just go up in Fig. 1
The polarity of the convex surface 11 of the arc-shaped permanent magnet 1 on the right side of the arc-shaped permanent magnet 1 of side is N poles.Similar, here is not repeated.
By using arc-shaped permanent magnet 1, and using arc-shaped permanent magnet 1 convex surface 11 arc length more than the arc length of concave surface 12
Feature, improves the table magnetic surface product of the arc-shaped permanent magnet 1 under a magnetic pole, so as to increased what rotor was produced on stator winding
Sensing magnetic flux so that tangential permanent magnet motor can produce good magnet accumulating cap in the case where number of poles is less, also, increase effectively
The torque density of motor, reduces motor iron loss, improves the efficiency of motor.
With continued reference to shown in Fig. 1, any one arc-shaped permanent magnet 1 is with towards the first end 16 on the outside of the rotor core 2
With towards the second end 17 on the inside of the rotor core 2.The concave surface 12 of the first end 16 of the arc-shaped permanent magnet 1 and convex surface 11 it
Between midpoint be the first midpoint 13, the midpoint between the concave surface 12 and convex surface 11 at the second end 17 of the arc-shaped permanent magnet 1 is
Second midpoint 14, first midpoint 13, second midpoint 14 are conllinear with the rotor center 3.
In one preferred embodiment, with reference to shown in Fig. 1, the rotor core 2 can be rotated along direction of rotation 5, its
In the convex surface 11 of any one arc-shaped permanent magnet 1 be located at the concave surface 12 of the arc-shaped permanent magnet 1 along the direction of rotation 5
Front side.Find through research, the most region through rotation front side in the magnetic field that arc-shaped permanent magnet 1 is produced enters stator, by will
1 projection direction of arc-shaped permanent magnet is arranged on the front side of rotor direction of rotation 5, can increase the face of the rotation of arc-shaped permanent magnet 1 front side
Product, reduces in magnetic field in the saturation in this region, increases the output torque of motor.
In one preferred embodiment, find through research, with reference to shown in Fig. 2, can when H/D is more than or equal to 1.5
Effectively increase motor magnetic linkage, but as the increase of H/D can cause permanent magnet radian to deepen, this can cause the manufacturing cost of permanent magnet
Dramatically increase, therefore, H is arranged between 1.5 times to 2.5 times permanent magnetism body thicknesses, can both increase motor permanent magnet magnetic linkage and
Larger cost will not be brought to increase.Wherein, D represents the arc-shaped permanent magnet 1 in the thickness on the section of rotor center 3
Degree, H represent the concave surface of the tangent line with 11 peak 15 of convex surface of the arc-shaped permanent magnet 1 as point of contact and the arc-shaped permanent magnet 1
The distance between 12 minimum points 18.It is highly preferred that 2D >=H >=1.8D, can cause motor to have more preferably performance and cost ratio concurrently
Value.
In one preferred embodiment, with reference to shown in Fig. 3, arc-shaped permanent magnet 1 described at least one is perpendicular to turning
Thickness on the section of subcenter 3 gradually increases from the second end 17 to first end 16.With reference to shown in Fig. 3, the arc-shaped permanent magnet 1
It is D1 in the thickness of the first end 16 on the section of rotor center 3, the arc-shaped permanent magnet 1 is perpendicular to rotor center
The thickness of the first end 16 on 3 section is D2, wherein, D1 is less than D2.Show that the arc-shaped permanent magnet 1 is close through research
Part on the outside of the rotor mainly produces main flux, and the arc-shaped permanent magnet 1 is easily produced near the part on the inside of the rotor
The more leakage magnetic fluxs of life.Thus this kind of structure, rotor is adopted to increase motor in the case where leakage magnetic flux is not increased
Main flux, improves the performance of motor.
In one preferred embodiment, with reference to shown in Fig. 4,0.25 >=C*H/M2>=0.1, wherein, M represents the arc
The distance between the magnetic field focus 19 of shape permanent magnet 1 and convex surface 11 of the arc-shaped permanent magnet 1, H is represented with the arcuate permanent magnetic
Tangent line and concave surface 12 minimum point 18 of the arc-shaped permanent magnet 1 the distance between of 11 peak 15 of convex surface of body 1 for point of contact, C
Represent the arc-shaped permanent magnet 1 in the width on the section of rotor center 3.As 1 magnetic direction of arc-shaped permanent magnet gathers
Close in the recessed side of permanent magnet, increase the magnetic flux of motor in the case of the constancy of volume of arc-shaped permanent magnet 1 can be caused, effectively
Increase motor torque density.
In one preferred embodiment, with reference to shown in Fig. 1, six arc-shaped permanent magnets 1 are with the rotor core 2
Rotor center 3 be that circumferentially direction is uniformly arranged in the center of circle so that the Distribution of Magnetic Field of the rotor is uniform, so as to ensure the electricity
The performance of machine.
In one preferred embodiment, with reference to shown in Fig. 5, the first end 16 of the arc-shaped permanent magnet 1 is along the rotation
Turn front side of the direction 5 positioned at the second end 17 of the arc-shaped permanent magnet 1.As it was previously stated, the arc-shaped permanent magnet 1 is near described turn
The part in sub- outside mainly produces main flux, and the arc-shaped permanent magnet 1 easily produces more near the part on the inside of the rotor
Leakage magnetic flux.Thus, it is possible under conditions of rotor volume is constant, increase the magnetic flux area of motor permanent magnet.
Another preferred embodiment in, with continued reference to shown in Fig. 5, the first end 16 of the arc-shaped permanent magnet 1
Midpoint between concave surface 12 and convex surface 11 be the first midpoint 13, the concave surface 12 at the second end 17 of the arc-shaped permanent magnet 1 with it is convex
Midpoint between face 11 be the second midpoint 14, the first line segment 41 formed with the rotor center 3 by first midpoint 13 and
The angle that the second line segment 42 formed with the rotor center 3 by second midpoint 14 is in is θ, is shown through research,
25 ° >=θ >=10 ° can effectively increase the torque density of motor.
According to magneto of the present utility model, including motor stator and the rotor such as above-mentioned claim.
Preferred embodiment of the present utility model is the foregoing is only, this utility model is not limited to, for this
For the technical staff in field, this utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. are should be included within protection domain of the present utility model.
Claims (12)
1. a kind of rotor, it is characterised in that include：
Rotor core (2)；
N number of arc-shaped permanent magnet (1), N number of arc-shaped permanent magnet (1) is with the rotor center (3) of the rotor core (2) as the center of circle
Circumferentially direction arrangement is arranged on the rotor core (2), and arc-shaped permanent magnet described in any of which (1) is perpendicular to rotor
Section on center (3) is curved, and any one described arc-shaped permanent magnet (1) tangentially magnetizes；
Wherein, any two close to the arc-shaped permanent magnet (1) in an arc-shaped permanent magnet (1) convex surface (11) with
The concave surface (12) of another arc-shaped permanent magnet (1) is oppositely arranged and polarity is identical；
Wherein, N is the even number more than or equal to 4.
2. rotor according to claim 1, it is characterised in that the rotor core (2) can turn along direction of rotation (5)
Dynamic, the convex surface (11) of arc-shaped permanent magnet described in any of which (1) is along the direction of rotation (5) positioned at arc-shaped permanent magnet this described
(1) front side of concave surface (12).
3. rotor according to claim 1, it is characterised in that 2.5D >=H >=1.5D, wherein D represent the arc
Thickness of the permanent magnet (1) on the section perpendicular to rotor center (3), H are represented with the convex surface of the arc-shaped permanent magnet (1) (11)
Tangent line and concave surface (12) minimum point (18) of the arc-shaped permanent magnet (1) the distance between of the peak (15) for point of contact.
4. rotor according to claim 3, it is characterised in that 2D >=H >=1.8D.
5. rotor according to claim 1, it is characterised in that any one arc-shaped permanent magnet (1) is with towards described
First end (16) on the outside of rotor core (2) and towards the second end (17) on the inside of the rotor core (2).
6. rotor according to claim 5, it is characterised in that the first end (16) of the arc-shaped permanent magnet (1)
Midpoint between concave surface (12) and convex surface (11) is the first midpoint (13), second end (17) of the arc-shaped permanent magnet (1)
Midpoint between concave surface (12) and convex surface (11) be the second midpoint (14), first midpoint (13), second midpoint (14)
It is conllinear with the rotor center (3).
7. rotor according to claim 5, it is characterised in that arc-shaped permanent magnet described at least one (1) is vertical
Thickness on the section of rotor center (3) gradually increases from the second end (17) to first end (16).
8. rotor according to claim 1, it is characterised in that 0.25 >=C*H/M2>=0.1, wherein, M represents described
The distance between the magnetic field focus (19) of arc-shaped permanent magnet (1) and convex surface (11) of the arc-shaped permanent magnet (1), H is represented with institute
State the concave surface (12) of tangent line of convex surface (11) peak (15) of arc-shaped permanent magnet (1) for point of contact and the arc-shaped permanent magnet (1)
The distance of minimum point (18), C represent width of the arc-shaped permanent magnet (1) on the section perpendicular to rotor center (3).
9. rotor according to claim 1, it is characterised in that the first end (16) of the arc-shaped permanent magnet (1)
Midpoint between concave surface (12) and convex surface (11) is the first midpoint (13), second end (17) of the arc-shaped permanent magnet (1)
Midpoint between concave surface (12) and convex surface (11) is the second midpoint (14), by first midpoint (13) and the rotor center
(3) the first line segment (41) for being formed and the second line segment (42) formed with the rotor center (3) by second midpoint (14)
The angle for being in is θ, 25 ° >=θ >=10 °.
10. rotor according to claim 1, it is characterised in that N number of arc-shaped permanent magnet (1) is with the rotor
The rotor center (3) of iron core (2) for the center of circle, circumferentially uniformly arrange by direction.
11. rotors according to claim 5, it is characterised in that the rotor core (2) can be along direction of rotation (5)
Rotate, the first end (16) of the arc-shaped permanent magnet (1) is along the direction of rotation (5) positioned at the of the arc-shaped permanent magnet (1)
The front side at two ends (17).
A kind of 12. magnetoes, including motor stator and the rotor such as any one of claim 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621074620.0U CN206135581U (en) | 2016-09-22 | 2016-09-22 | Electric motor rotor and permanent -magnet machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621074620.0U CN206135581U (en) | 2016-09-22 | 2016-09-22 | Electric motor rotor and permanent -magnet machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206135581U true CN206135581U (en) | 2017-04-26 |
Family
ID=58570471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621074620.0U Withdrawn - After Issue CN206135581U (en) | 2016-09-22 | 2016-09-22 | Electric motor rotor and permanent -magnet machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206135581U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357025A (en) * | 2016-09-22 | 2017-01-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor and permanent magnet motor |
| CN110299772A (en) * | 2019-07-26 | 2019-10-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor, tangential motor and compressor |
-
2016
- 2016-09-22 CN CN201621074620.0U patent/CN206135581U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357025A (en) * | 2016-09-22 | 2017-01-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor and permanent magnet motor |
| CN106357025B (en) * | 2016-09-22 | 2019-02-15 | 珠海格力电器股份有限公司 | motor rotor and permanent magnet motor |
| CN110299772A (en) * | 2019-07-26 | 2019-10-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor, tangential motor and compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170426 Effective date of abandoning: 20190215 |
|
| AV01 | Patent right actively abandoned |