CN207234555U - Surface-mount type motor, surface-mount type rotor and stator - Google Patents

Surface-mount type motor, surface-mount type rotor and stator Download PDF

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Publication number
CN207234555U
CN207234555U CN201720993835.0U CN201720993835U CN207234555U CN 207234555 U CN207234555 U CN 207234555U CN 201720993835 U CN201720993835 U CN 201720993835U CN 207234555 U CN207234555 U CN 207234555U
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China
Prior art keywords
mount type
stator
type rotor
line
eccentric
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Withdrawn - After Issue
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CN201720993835.0U
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Chinese (zh)
Inventor
肖勇
王晶
李小飞
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Zhuhai Gree Energy Saving Environmental Protection Refrigeration Technology Research Center Co Ltd
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Zhuhai Gree Energy Saving Environmental Protection Refrigeration Technology Research Center Co Ltd
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Abstract

The utility model discloses a kind of surface-mount type motor, surface-mount type rotor and stator, the magnet steel (2) of surface-mount type rotor has the lateral surface towards stator (1), and the both sides of the lateral surface have along the symmetrically arranged trimming structure of its center line.Surface-mount type rotor provided by the utility model, by having in the both sides of outer side along the symmetrically arranged trimming structure of its center line, gas length of the motor along each position of stator internal circular surfaces can be changed, and then improve air-gap field, so that air gap flux density and counter potential waveform sine degree improve, harmonic wave accounting is reduced, thereby reduces torque pulsation, effectively reduces motor oscillating noise.Stator and surface-mount type motor provided by the utility model has the technique effect identical with above-mentioned surface-mount type rotor.

Description

Surface-mount type motor, surface-mount type rotor and stator
Technical field
Motor device technical field is the utility model is related to, more particularly to a kind of surface-mount type motor, surface-mount type rotor And stator.
Background technology
Durface mounted permanent magnet synchronous motor has the advantages that simple in structure and is easy to vector controlled, therefore, in high performance servo It is widely applied in system and low speed high torque propulsion system.
As shown in Figure 1, surface-mount type motor includes surface-mount type rotor and stator 01, surface-mount type rotor includes shaft 04th, rotor core 03 and it is arranged at the magnet steel 02 of 03 outer surface of rotor core.
At present, the air gap flux density of durface mounted permanent magnet synchronous motor and back-emf contain all kinds of space harmonicses, due to surface-mount type Slot on the stator 01 of permanent magnet synchronous motor so that magnetic circuit magnetic conductance is uneven, and it is humorous that air gap flux density, back-emf contain each space-like Ripple, and harmonic wave accounting is big, all kinds of harmonic interactions produce low order Reeb, the vibration noise of expanded motor.Waveform sine compared with Difference, irregularity of wave form are high so that the vibration of motor and noise are larger, and influence user uses health, limits the application of motor Promote.
Therefore, the vibrating noise of motor how is reduced, is the technical problem to be solved by the personnel in the art.
Utility model content
In view of this, the utility model provides a kind of surface-mount type rotor, to reduce the vibrating noise of motor.This reality A kind of surface-mount type rotor and stator are additionally provided with new.
To achieve the above object, the utility model provides following technical solution:
A kind of surface-mount type rotor, the magnet steel of the surface-mount type rotor has the lateral surface towards stator, described The both sides of lateral surface have along the symmetrically arranged trimming structure of its center line.
Preferably, in above-mentioned surface-mount type rotor, the trimming structure of the lateral surface is to be arranged at the lateral surface The eccentric cambered of middle cambered surface both sides, interior lateral bend of the eccentric cambered towards the surface-mount type rotor;
The eccentric cambered and the middle cambered surface seamlessly transit.
Preferably, in above-mentioned surface-mount type rotor, closer to the magnetic pole line of demarcation of the magnet steel, the eccentric cambered Radian is bigger.
Preferably, in above-mentioned surface-mount type rotor, the radian of the eccentric cambered is A/2, and the surface-mount type motor turns Angle shared by the single magnetic pole of son is F;
0.7≥A/F≥0.25。
Preferably, in above-mentioned surface-mount type rotor, the magnetic pole logarithm of motor is P, and the radian of the eccentric cambered is A/ 2;Angle between eccentric arbitrary point line and eccentric tie point line is set to θ 3, and bias arbitrary point line is the eccentric arc The line at any point and the surface-mount type rotor center of circle on face, the bias tie point line are W tie points and the table The line in the mounted rotor center of circle, the W tie points are the middle cambered surface and the tie point of the eccentric cambered;The bias The distance between any point and the center of circle of the surface-mount type rotor are bias footpath R6 in cambered surface;The bias footpath R6 and institute The radius R5 for stating middle cambered surface meets following relation:Wherein
Preferably, in above-mentioned surface-mount type rotor, the angle in gap is C between the two neighboring magnet steel (2), described Angle shared by the single magnetic pole of surface-mount type rotor is F;0.2≥C/F≥0.15.
The utility model additionally provides a kind of stator, and the tooth boots of the stator have towards the inner side of surface-mount type rotor Face, the both sides of the medial surface have along the symmetrically arranged trimming structure of its center line.
Preferably, in above-mentioned surface-mount type rotor, the trimming structure of the medial surface is to be arranged at the medial surface The curve section of median surface both sides, interior lateral bend of the curve section towards the stator.
Preferably, in above-mentioned surface-mount type rotor, the radian of the curve section is G/2, the single tooth of the stator Angle shared by boots is H;
0.7≥G/H≥0.4。
Preferably, in above-mentioned surface-mount type rotor, the slot number on the stator is Q;The radian of the curve section is G/2;Angle between curve arbitrary point line and curve tie point line is set to θ 2, and curve arbitrary point line is the song The line at any point and the stator center of circle on line section;The curve tie point line is justified for T tie points and the stator The line of the heart, the T tie points are the median surface and the tie point of the curve section;Any point on the curve section The distance between described stator center of circle is stator trimming footpath R4;The inner circle radius R3 of the stator trimming footpath R4 and the stator Meet following relation:Wherein,
The utility model additionally provides a kind of surface-mount type motor, including surface-mount type rotor and stator, the surface-mount type Rotor is such as above-mentioned any one of them surface-mount type rotor;
Or, the stator is such as above-mentioned any one of them stator.
It can be seen from the above technical scheme that surface-mount type rotor provided by the utility model, by outer side Both sides have along the symmetrically arranged trimming structure of its center line, motor can be changed along each position of stator internal circular surfaces Gas length, and then improve air-gap field so that air gap flux density and counter potential waveform sine degree improve, and reduce harmonic wave accounting, Torque pulsation is thereby reduced, effectively reduces motor oscillating noise.
The utility model additionally provides a kind of stator, and the tooth boots of stator have the medial surface towards surface-mount type rotor, The both sides of medial surface have along the symmetrically arranged trimming structure of its center line.Motor is equally also become along each of stator internal circular surfaces The gas length of a position is identical with above-mentioned technique effect.
The utility model additionally provides a kind of surface-mount type motor.Since above-mentioned surface-mount type motor has above-mentioned surface-mount type motor Rotor or said stator, since above-mentioned surface-mount type rotor and stator have above-mentioned technique effect, have above-mentioned surface-mount type electricity The motor of machine rotor or stator should also have same technique effect, and not repeated them here.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is a kind of structure diagram of motor of the prior art;
Fig. 2 is the structure diagram for the first surface-mount type motor that the utility model embodiment provides;
Fig. 3 is the structure diagram of the stator for the first surface-mount type motor that the utility model embodiment provides;
Fig. 4 is the structure diagram for the first surface-mount type rotor that the utility model embodiment provides;
Fig. 5 is the structure diagram for second of surface-mount type motor that the utility model embodiment provides;
Fig. 6 is the structure diagram for second of surface-mount type rotor that the utility model embodiment provides;
Fig. 7 is the structure diagram of the stator for second of surface-mount type motor that the utility model embodiment provides;
Fig. 8 is the tangential motor and a kind of torque arteries and veins of tangential motor of the prior art that the utility model embodiment provides Dynamic comparison diagram.
Embodiment
The utility model discloses a kind of surface-mount type rotor, to reduce the vibrating noise of motor.The utility model is also Provide a kind of stator and surface-mount type motor.
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work All other embodiments obtained, shall fall within the protection scope of the present invention.
Please refer to Fig.2 shown in-Fig. 4, the utility model embodiment provides a kind of surface-mount type rotor, surface-mount type motor The magnet steel 2 of rotor has the lateral surface towards stator 1, and the both sides of lateral surface have along the symmetrically arranged trimming knot of its center line Structure.
The surface-mount type rotor that the utility model embodiment provides, by having in the both sides of outer side along its center line Symmetrically arranged trimming structure, can change gas length of the motor along each position of 1 internal circular surfaces of stator, and then improve gas Gap magnetic field so that air gap flux density and counter potential waveform sine degree improve, and reduce harmonic wave accounting, thereby reduce torque pulsation, Effectively reduce motor oscillating noise.
It is understood that trimming structure is the marginal texture after an excision part in existing entity structure.Surface Mount Formula rotor includes shaft 4, rotor core 3 and magnet steel 2.
Shown as shown in Figure 2, Figure 3 and Figure 4, the trimming structure of lateral surface is the bias for the middle cambered surface both sides for being arranged at lateral surface Cambered surface, interior lateral bend of the eccentric cambered towards surface-mount type rotor;Eccentric cambered is seamlessly transitted with middle cambered surface.In this implementation Example in, the outer surface of the magnet steel 2 of surface-mount type rotor is cut off, and the structure of stator 1 can with it is of the prior art Stator 1 is identical.Wherein, eccentric cambered is the center of circle globoidal structure misaligned with the center of circle of surface-mount type rotor.
It is of course also possible to it is other structures, such as plane by the trimming structure setting of lateral surface.
Preferably, eccentric cambered is bigger closer to the magnetic pole line of demarcation of magnet steel 2, the radian of eccentric cambered.Wherein, eccentric arc Face and the tie point of middle cambered surface are W points, and eccentric arc changes from W points initially towards magnetic pole line of demarcation direction along curvilinear function, magnetic The eccentric arc of steel 2 along the circumferential direction extends.Pass through above-mentioned setting so that the air-gap permeance of magnetic circuit is evenly.
In the present embodiment, the radian of eccentric cambered is A/2, and angle shared by the single magnetic pole of surface-mount type rotor is F.Through Simulation study discovery is crossed, eccentric cambered radian and the ratio of middle cambered surface radian have a great influence air gap flux density harmonic wave accounting. Eccentric cambered is set on magnet steel 2, changes the pole form of magnet steel 2 so that the magnetic pole of magnet steel 2 is in salient pole shape, so that The gas length change of rotor surface diverse location.As A/F >=0.25, the gas length increase of magnetic pole both sides, reduces magnetic The air-gap permeance of pole both sides, thereby reduces the air gap flux density of magnetic pole both sides, reduces the mutability of magnetic conductance change so that magnetic conductance Change evenly, the waveform of air gap flux density is reduced air gap flux density and back-emf harmonic wave accounting, Jin Eryou close to sine wave Effect reduces vibration noise.But as A/F > 0.7, the radian of magnetic pole both sides eccentric cambered is excessive, causes rotor surface big The gas length of portion increases, and the air-gap permeance of rotor surface major part position reduces, the air gap magnetic of rotor surface Close to reduce, air gap magnetic density waveform does not improve, and irregularity of wave form is still higher, and motor oscillating noise is still larger, while air gap is grown Big, leakage field increase, the magnetic linkage reduction of motor are spent, the torque of motor reduces, and electric efficiency reduces.It is therefore preferred that 0.7 >= A/F ≥0.25。
As shown in Figures 4 and 8, the magnetic pole logarithm of motor is P, and the radian of eccentric cambered is A/2,;Eccentric arbitrary point line Angle between eccentric tie point line is set to θ 3, and eccentric arbitrary point line is any point on eccentric cambered and surface-mount type electricity The line in the machine rotor center of circle, eccentric tie point line are W tie points and the line in the surface-mount type rotor center of circle, and W tie points are The tie point of middle cambered surface and eccentric cambered, it is to be understood that 0 ° of 3 > of A/2 > θ, process of the eccentric cambered along curvilinear motion Middle θ 3 becomes larger, until W points are changed on 2 both sides of the edge line of magnet steel.Wherein, any point and surface-mount type electricity on eccentric cambered The distance between center of circle of machine rotor is bias footpath R6, i.e. eccentric footpath R6 is tapered into by W points along during curvilinear motion.Partially Heart footpath R6 and the radius R5 of middle cambered surface meet following relation:Wherein Passing through above-mentioned setting so that the corresponding stator 1 in trimming position (eccentric cambered) of magnet steel 2 increases with the gas length of rotor, into And reduce the mutability of gas length so that the air-gap permeance change of magnetic circuit evenly, improves rotor surface air gap magnetic The sine degree of condensation wave shape, reduces harmonic wave accounting, thereby reduces torque pulsation, reduces vibration noise of motor and harmonic wave damage Consumption, improves electric efficiency.
The angle in gap is C between two neighboring magnet steel 2, and angle shared by the single magnetic pole of surface-mount type rotor is F.Through Cross research to find, as C/F >=0.15, easy to install fastener between magnet steel 2 and magnet steel 2, strengthen the integrally-built machine of rotor Tool intensity;But as 0.2 >=C/F, pole embrace reduces, the utilization rate of magnet steel 2 also decreases so that motor power output Square reduces.It is therefore preferred that 0.2 >=C/F >=0.15.
It is understood that in stator 1 and the untrained position of magnet steel 2, air gap is minimum, gas length D, from air gap Minimum position is moved clockwise or counterclockwise along 2 surface of magnet steel of rotor, and gas length becomes larger.
As shown in Fig. 5, Fig. 6 and Fig. 7, the utility model embodiment additionally provides a kind of stator, and the tooth boots of stator have court To the medial surface of surface-mount type rotor, the both sides of medial surface have along the symmetrically arranged trimming structure of its center line.
The stator that the utility model embodiment provides, it is symmetrically arranged along its center line by having in the both sides of medial surface Trimming structure, can change gas length of the motor along each position of 1 internal circular surfaces of stator, and then improve air-gap field, make Obtain air gap flux density and counter potential waveform sine degree improves, reduce harmonic wave accounting, thereby reduce torque pulsation, effectively reduce Motor oscillating noise.
It is understood that trimming structure is the marginal texture after an excision part in existing entity structure.
Preferably, the trimming structure of medial surface is the curve section for the median surface both sides for being arranged at medial surface, curve section Towards the interior lateral bend of stator 1.In the present embodiment, the inner surface of 1 tooth boots of stator is cut off, and the structure of rotor can be with It is identical with rotor of the prior art.
It is of course also possible to it is other structures, such as plane by the trimming structure setting of medial surface.
Wherein, the radian of curve section is G/2, and angle shared by the single tooth boots of stator 1 is H.As shown in Fig. 5, median surface Tie point with curve section is T points, the portion of cutting position (curve section) air gap between rotor of 1 tooth boots of stator Point.Found by simulation study, radian shared by curve section (cutting positions of 1 tooth boots of stator) is with angle shared by single tooth boots H ratios have a great influence air gap flux density harmonic wave accounting.As G/H >=0.4, the radian of curve section is larger, makes in motor stator 1 The gas length transition on surface evenly, improves the uniformity of magnetic air gap magnetic conductance, improves air gap flux density, back-emf ripple Shape, reduces harmonic wave accounting, reduces motor oscillating noise.But after G/H > 0.7, the radian of curve section is excessive, magnetic flux Centerline of the concentrations in 1 tooth boots of stator so that the air gap flux density at this is excessive, and air gap magnetic density waveform distortion is serious, humorous The increase of ripple accounting, motor oscillating noise increase.It is therefore preferred that 0.7 >=G/H >=0.4.
Preferably, the slot number on stator 1 is Q, and the radian of curve section is G/2, and curve arbitrary point line is connected with curve Angle between point line is set to θ 2, and curve arbitrary point line is the line at any point and stator (1) center of circle on curve section; Curve tie point line is T tie points and the line in 1 center of circle of stator, and T tie points are median surface and the tie point of curve section. That is, 2 > 0o of G/2 > θ, wherein, stator 1 and rotor are concentric, and the trimming of stator 1 becomes larger along θ 2 during curvilinear motion, Curve section since point T along curvilinear motion, until being overlapped with the edge line of 1 tooth boots of stator.On curve section any point with The distance between 1 center of circle of stator is 1 trimming footpath R4 of stator.That is, 1 trimming footpath R4 of stator from T points along during curvilinear motion by Gradual change is big, and 1 trimming footpath R4 of stator and inner circle radius (i.e. the radius of median surface) R3 of stator 1 meet following relation:WhereinSo that the air-gap permeance change of motor Evenly, the sine degree of air gap magnetic density waveform is improved, reduces harmonic wave accounting and torque pulsation, also reduces the vibration of motor Noise and harmonic loss, improve electric efficiency.
Wherein, Q >=4.In the present embodiment, Q=12.
It is understood that in stator 1 and the untrained position of magnet steel 2, air gap is minimum, gas length D, from air gap Minimum position is moved clockwise or counterclockwise along 2 surface of magnet steel of rotor, and gas length becomes larger.
The utility model embodiment additionally provides a kind of surface-mount type motor, surface-mount type motor include surface-mount type rotor and Stator 1.Wherein, surface-mount type rotor is such as above-mentioned any surface-mount type rotor;Or, stator 1 is as above-mentioned any Stator.The surface-mount type motor that the utility model embodiment provides has the technology identical with above-mentioned surface-mount type rotor and stator Effect, not repeated them here.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other The difference of 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 new using this practicality Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The most wide scope consistent with features of novelty.

Claims (11)

1. a kind of surface-mount type rotor, it is characterised in that the magnet steel (2) of the surface-mount type rotor has towards stator (1) lateral surface, the both sides of the lateral surface have along the symmetrically arranged trimming structure of its center line.
2. surface-mount type rotor as claimed in claim 1, it is characterised in that the trimming structure of the lateral surface is to be arranged at The eccentric cambered of the middle cambered surface both sides of the lateral surface, interior lateral bending of the eccentric cambered towards the surface-mount type rotor It is bent;
The eccentric cambered and the middle cambered surface seamlessly transit.
3. surface-mount type rotor as claimed in claim 2, it is characterised in that the magnetic pole closer to the magnet steel (2) is demarcated Line, the radian of the eccentric cambered are bigger.
4. surface-mount type rotor as claimed in claim 2, it is characterised in that the radian of the eccentric cambered is A/2, described Angle shared by the single magnetic pole of surface-mount type rotor is F;
0.7≥A/F≥0.25。
5. surface-mount type rotor as claimed in claim 2, it is characterised in that the magnetic pole logarithm of motor is P, the eccentric arc The radian in face is A/2;Angle between eccentric arbitrary point line and eccentric tie point line is set to θ 3, and the bias arbitrary point connects Line is the line at any point and the surface-mount type rotor center of circle on the eccentric cambered, and the bias tie point line is W tie points and the line in the surface-mount type rotor center of circle, the W tie points are the middle cambered surface and the eccentric cambered Tie point;The distance between any point and the center of circle of the surface-mount type rotor are eccentric footpath on the eccentric cambered R6;The bias footpath R6 and the radius R5 of the middle cambered surface meet following relation:Wherein
6. such as claim 1-5 any one of them surface-mount type rotors, it is characterised in that the two neighboring magnet steel (2) Between the angle in gap be C, angle shared by the single magnetic pole of the surface-mount type rotor is F;0.2≥C/F≥0.15.
7. a kind of stator, it is characterised in that the tooth boots of the stator have the medial surface towards surface-mount type rotor, described interior The both sides of side have along the symmetrically arranged trimming structure of its center line.
8. stator as claimed in claim 7, it is characterised in that the trimming structure of the medial surface is to be arranged at the medial surface Median surface both sides curve section, interior lateral bend of the curve section towards the stator (1).
9. stator as claimed in claim 8, it is characterised in that the radian of the curve section is G/2, the stator (1) Angle shared by single tooth boots is H;
0.7≥G/H≥0.4。
10. stator as claimed in claim 8 or 9, it is characterised in that the slot number on the stator (1) is Q;The curve is cut The radian in face is G/2;Angle between curve arbitrary point line and curve tie point line is set to θ 2, and the curve arbitrary point connects Line is the line at any point and the stator (1) center of circle on the curve section;The curve tie point line is T tie points With the line in the stator (1) center of circle, the T tie points are the median surface and the tie point of the curve section;The song The distance between any point and the stator (1) center of circle are stator (1) trimming footpath R4 on line section;Stator (1) trimming Footpath R4 and the inner circle radius R3 of the stator (1) meet following relation:Wherein
11. a kind of surface-mount type motor, including surface-mount type rotor and stator (1), the surface-mount type rotor is such as right It is required that 1-6 any one of them surface-mount type rotors;
Or, the stator (1) is such as claim 7-10 any one of them stators.
CN201720993835.0U 2017-08-09 2017-08-09 Surface-mount type motor, surface-mount type rotor and stator Withdrawn - After Issue CN207234555U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720993835.0U CN207234555U (en) 2017-08-09 2017-08-09 Surface-mount type motor, surface-mount type rotor and stator

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Application Number Priority Date Filing Date Title
CN201720993835.0U CN207234555U (en) 2017-08-09 2017-08-09 Surface-mount type motor, surface-mount type rotor and stator

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107276272A (en) * 2017-08-09 2017-10-20 珠海格力节能环保制冷技术研究中心有限公司 Surface-mount type motor, surface-mount type rotor and stator
CN110112845A (en) * 2019-05-30 2019-08-09 上海电气风电集团有限公司 Permanent magnet and motor comprising it

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107276272A (en) * 2017-08-09 2017-10-20 珠海格力节能环保制冷技术研究中心有限公司 Surface-mount type motor, surface-mount type rotor and stator
CN107276272B (en) * 2017-08-09 2023-09-26 珠海格力节能环保制冷技术研究中心有限公司 Surface-mounted motor, surface-mounted motor rotor and stator
CN110112845A (en) * 2019-05-30 2019-08-09 上海电气风电集团有限公司 Permanent magnet and motor comprising it

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