CN107591920A - Rotor and motor - Google Patents
Rotor and motor Download PDFInfo
- Publication number
- CN107591920A CN107591920A CN201710815176.6A CN201710815176A CN107591920A CN 107591920 A CN107591920 A CN 107591920A CN 201710815176 A CN201710815176 A CN 201710815176A CN 107591920 A CN107591920 A CN 107591920A
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- China
- Prior art keywords
- rotor
- core
- permanent magnet
- sections
- core packet
- 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.)
- Pending
Links
- 238000004080 punching Methods 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000010349 pulsation Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010923 batch production Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention provides a kind of rotor and motor, rotor includes rotor core, rotor core includes at least two sections of core packets, is provided with permanent magnet on core packet, and predetermined angular is offset up along the week of rotor between the corresponding permanent magnet on adjacent two sections of core packets.Because the rotor in the present invention is segment design, and offset up predetermined angular along the axle of rotor between the corresponding permanent magnet between adjacent two sections of core packets, oblique pole can be formed, cogging torque and the torque pulsation of motor can be reduced, so as to the isostructural vibrating noise of the compressor for reducing motor and being applied.During actual fabrication rotor core, its mould specification is same, simplifies punching die structure and improves the mold use life-span, and assembly technology is synchronously simplified, and batch production can be achieved without special frock.
Description
Technical field
The present invention relates to technical field of driving, in particular to a kind of rotor and motor.
Background technology
Permagnetic synchronous motor with its efficiency high, compact-sized and torque is big the advantages of obtained in many fields widely should
With.However, because permagnetic synchronous motor magnetic field is fixed, can be because the influence of stator teeth notching forms cogging torque under no-load condition；
In the case of design is irrational, torque pulsation can be bigger, causes noise of motor vibration big.Driven using permagnetic synchronous motor
Compressor, because of the presence of cogging torque and pulsating torque, compressor can be caused to produce very big vibration and noise.
Patent document CN205092672U discloses a kind of rotor, between adjusting between adjacent magnet steel groove
Gap so that at least one gap and other gaps are unequal, form asymmetric field structure, reduce motor cogging torque
Fundamental wave, so as to reduce cogging torque and torque ripple, reduce loss, improve performance.However, because rotor structure is asymmetric, make
Into rotor radial centroid motion, dynamic balance calibration is difficult, the problem of noise and vibration being caused bigger than normal on the contrary.
Patent document CN202395554U discloses a kind of magneto, and permanent magnet is rectangular or shoe, permanent magnet are footpath
To magnetizing；By the way that permanent magnet is reversed into certain angle so that the oblique pole of permanent magnet, both improved the induced voltage ripple of stator winding
Shape, cogging torque is reduced again, reduce motor torque ripple and stray loss, realize the high efficiency of compressor assembly, low shake
Dynamic, low noise and even running.But because permanent magnet reverses, cause practical set difficult, technique realizes that difficulty is larger, it is difficult to real
Now produce in batches.
The content of the invention
It is a primary object of the present invention to provide a kind of rotor and motor, to solve magneto of the prior art
Complex process, and the problem of be difficult to assemble.
To achieve these goals, according to an aspect of the invention, there is provided a kind of rotor, including rotor iron
Core, rotor core include at least two sections of core packets, are provided with permanent magnet on core packet, corresponding on adjacent two sections of core packets
Between permanent magnet predetermined angular is offset up along the week of rotor.
Further, core packet is h/m along the upward height of rotor axis of electric, wherein, h is in the axial direction of rotor
Highly, m is the hop count of core packet.
Further, at least corresponding permanent magnet is along the overall offset angle in rotor circumference on two sections of core packets
θ=β, wherein β are predetermined angular, and m is the hop count of core packet.
Further, overall offset angle, θ meets：0.2a≤θ≤a, wherein, a is motor stator corresponding to rotor
The angle of adjacent two tooth, a=360 °/n, n is the number of teeth of motor stator.
Further, at least it is fixed together between two sections of core packets by locking member.
Further, locking member is rivet or screw or riveting point punching structure.
Further, X lock holes corresponding with locking member, the number of lock hole and each core packet are provided with core packet
On permanent magnet number it is equal, wherein, X >=4, X are even number.
Further, the adjacent lock hole of any two on each core packet along in rotor circumference layout to forever
The direction anglec of rotation A in opposite direction that magnet deviates, adjacent two sections of core packets offset angular B or C are installed, wherein, A=
β/2, B=360 °/X- β, C=360 °/X+ β.
Further, axis hole is provided with rotor core, rotating shaft is installed in axis hole, rotating shaft connects with axis hole interference fit
Connect.
Further, axis hole is provided with rotor core, rotating shaft is installed in axis hole, rotating shaft coordinates with axis hole gap, and
Fixed by key connection or welding connecting mode is fixed.
Further, the cross section of permanent magnet is circular arc or strip or polygon.
Further, permanent magnet is embedded is fixed in core packet or amplexiforms the periphery for being fixed on core packet.
According to another aspect of the present invention, there is provided a kind of motor, including rotor, rotor are above-mentioned motor
Rotor.
Apply the technical scheme of the present invention, because the rotor in the present invention is segment design, and adjacent two iron leg
Predetermined angular is offset up along the axle of rotor between corresponding permanent magnet between core section, oblique pole can be formed, can be dropped
The cogging torque of low motor and torque pulsation, so as to the isostructural vibrating noise of the compressor for reducing motor and being applied.In reality
During border makes rotor core, its mould specification is same, simplifies punching die structure and improves the mold use life-span,
Assembly technology is synchronously simplified, and batch production can be achieved without special frock.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 diagrammatically illustrates the top view during rotor and good motor stator assembling of the present invention；
Fig. 2 diagrammatically illustrates the top view of the rotor of the first embodiment of the present invention；
Fig. 3 diagrammatically illustrates the stereogram of the rotor core of the first embodiment of the present invention；
Fig. 4 diagrammatically illustrates the exploded view of the rotor core of the first embodiment of the present invention；
Fig. 5 diagrammatically illustrates the exploded view of the rotor core of the second embodiment of the present invention；
Fig. 6 diagrammatically illustrates the stereogram of the rotor of the present invention；
Fig. 7 diagrammatically illustrates the top view of the rotor of the third embodiment of the present invention；
Fig. 8 diagrammatically illustrates the top view of the rotor of the fourth embodiment of the present invention；And
Fig. 9 diagrammatically illustrates the top view of the rotor of the fifth embodiment of the present invention.
Wherein, above-mentioned accompanying drawing marks including the following drawings：
10th, rotor core；11st, core packet；111st, positioning hole；112nd, lock hole；113rd, permanent magnet；12nd, axis hole；13rd, lock
Tight part；14th, rotating shaft；30th, motor stator.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
It should be noted that term " first " in the description and claims of this application and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use
Data can exchange in the appropriate case, so that presently filed embodiment described herein for example can be with except herein
Order beyond those of diagram or description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, product or equipment not
Be necessarily limited to those steps or the unit clearly listed, but may include not list clearly or for these processes, side
The intrinsic other steps of method, product or equipment or unit.
For the ease of description, space relative terms can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in accompanying drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
Referring to shown in Fig. 1 to Fig. 9, according to an embodiment of the invention, there is provided a kind of rotor, the electricity in the present embodiment
Machine rotor includes rotor core 10, and the rotor core 10 includes at least two sections of core packets 11, permanent magnet is provided with core packet 11
113, predetermined angular is offset up along the week of rotor between the corresponding permanent magnet 113 on two neighboring core packet 11.
Because the rotor in the present embodiment is segment design, and between adjacent two sections of core packets 11 it is corresponding forever
Predetermined angular is offset up along the axle of rotor between magnet 113, oblique pole can be formed, the cogging torque of motor can be reduced
And torque pulsation, so as to the isostructural vibrating noise of the compressor for reducing motor and being applied.In actual fabrication rotor core 10
During, its mould specification is same, simplifies punching die structure and improves the mold use life-span, and assembly technology synchronously obtains
To simplification, batch production can be achieved without special frock.
During actual design, core packet 11 in the present embodiment is h/m along the upward height of rotor axis of electric, its
In, h is the height in the axial direction of rotor, and m is the hop count of core packet 11, the rotor for being easy to improve in the present embodiment
Production efficiency.Certainly, in other embodiments of the invention, the height of each section of core packet 11 can also be arranged to different height
Degree, as long as other modes of texturing under the design of the present invention, within protection scope of the present invention.
Preferably, in the first embodiment of the present invention, core packet 11 is both ends, in the second embodiment of the present invention,
Core packet 11 is three sections.
Corresponding permanent magnet 113 at least on two sections of core packets 11 in the present invention is along the overall offset in rotor circumference
Angle is θ=β (m-1), and wherein β is above-mentioned predetermined angular, and m is the hop count of core packet 11.
Above-mentioned overall offset angle, θ meets：0.2a≤θ≤a, wherein, a is the phase of motor stator 30 corresponding to rotor
The angle of adjacent two teeth, a=360 °/n, n is the number of teeth of motor stator 30.
During actual assembled, one is fixedly connected on by locking member 13 between above-mentioned at least two sections of core packets 11
Rise.
Preferably, the locking member 13 in the present embodiment can be rivet or screw or riveting point punching structure, as long as at this
Other modes of texturing under the design of invention, within protection scope of the present invention.
X lock holes 112 corresponding with locking member 13, the number of lock hole 112 and each iron core are provided with core packet 11
The number of permanent magnet 113 in section 11 is equal, wherein, X >=4, X are even number.
The adjacent lock hole 112 of any two on each core packet 11 along in rotor circumference layout to permanent magnet
The 113 direction anglec of rotation A in opposite direction deviateed, adjacent two sections of core packets 11 offset angular B or C are installed, wherein, A
=β/2, B=360 °/X- β, C=360 °/X+ β.After anglec of rotation A is defined, the motor rotor core is adjacent two sections
Core packet 11 staggers B or C angles, it is ensured that two neighboring segmented rotor iron core has X/2 rivet hole to overlap, through rivet
Different segmentations can be combined together, adjacent difference is segmented the oblique pole angle beta that staggers.For each core packet of rotor core
11, its structure is symmetric about the axis；It is whole to turn even if each rivet and rivet hole still distribution symmetric about the axis after riveting
The barycenter of sub- iron core is still on axis, the problem of rotor dynamic balancing will not being caused to increase.
In a kind of preferred embodiment of the present invention, axis hole 12 is provided with rotor core 10, is provided with axis hole 12
Rotating shaft 14, rotating shaft 14 connect with the interference fit of axis hole 12.When rotor core 10 and rotating shaft 14 are with interference fit is combined into, rotor
Iron core 10 is assembled by forms such as cold pressing or hot jackets with rotating shaft 14.
In another preferred embodiment of the present invention, axis hole 12 is provided with rotor core 10, is installed in axis hole 12
There is a rotating shaft 14, rotating shaft 14 coordinates with the gap of axis hole 12, and is fixed by key connection or welding connecting mode is fixed.
Referring to shown in Fig. 1 to Fig. 6, in the first embodiment of the present invention and second embodiment, the cross section of permanent magnet 113
It is circular arc.
Shown in Figure 7, in the third embodiment of the present invention, the cross section of permanent magnet 113 is strip.
Shown in Figure 8, in the fourth embodiment of the present invention, the cross section of permanent magnet 113 is polygon.
Certainly, in other embodiments of the invention, the cross section of permanent magnet 113 can also be arranged to other rule or
The irregular shape of person, as long as other modes of texturing under the design of the present invention, within protection scope of the present invention.
Referring to shown in Fig. 1 to Fig. 8, in first to fourth embodiment of the present invention, positioning hole is provided with core packet 11
111, permanent magnet 113 is embedded in positioning hole 111 by interference fit.
Shown in Figure 9, according to the fifth embodiment of the invention, the permanent magnet 113 in the present embodiment passes through the mode of amplexiforming
It is fixed on the periphery of core packet 11.
During device, rotor core 10 of the invention is assembled to form rotor, multistage iron core with permanent magnet 113
The assembling of section 11 is as shown in figure 5, first assemble the core packet 11 of first paragraph with permanent magnet 113, secondly by the iron core at the second end
Section 11 is assembled with permanent magnet 113, and first paragraph and the second layer are then riveted into combination two-by-two with rivet, afterwards assembled third layer
The riveting of first paragraph and the second layer combine；After all core packets 11 rivet, rotor is eventually formed.This process is only made
To illustrate, actual implementation process may be different, but result is consistent.
According to another aspect of the present invention, there is provided a kind of motor, the motor in the present embodiment include rotor, the electricity
Machine rotor is above-mentioned rotor.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：
1st, rotor of the invention forms oblique pole by permanent magnetism solid offsetting, can reduce cogging torque and torque pulsation,
So as to the noise and vibration of compressor for reducing motor and its being applied；
2nd, the rotor core of rotor of the invention, its mould specification is unified, simplifies punching die structure and improves
Die life；
3rd, the rotor of rotor of the invention, its assembly technology is simple, and batch can be achieved without special frock
Production.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (13)
1. a kind of rotor, it is characterised in that including rotor core (10), the rotor core (10) includes at least two iron legs
Core section (11), is provided with permanent magnet (113) on the core packet (11), corresponding on adjacent two sections of core packets (11)
Between the permanent magnet (113) predetermined angular is offset up along the week of the rotor.
2. rotor according to claim 1, it is characterised in that the core packet (11) is axial along the rotor
On height be h/m, wherein, h be the rotor axial direction on height, m be the core packet (11) hop count.
3. rotor according to claim 1, it is characterised in that corresponding institute at least on two sections of core packets (11)
It is θ=β (m-1) that permanent magnet (113), which is stated, along the overall offset angle in the rotor circumference, and wherein β is the predetermined angle
Degree, m are the hop count of the core packet (11).
4. rotor according to claim 3, it is characterised in that the overall offset angle, θ meets：0.2a≤θ≤
A, wherein, a is the angle of adjacent two tooth of motor stator (30) corresponding to the rotor, and a=360 °/n, n is the motor
The number of teeth of stator (30).
5. rotor according to claim 3, it is characterised in that pass through lock between at least two sections of core packets (11)
Tight part (13) is fixed together.
6. rotor according to claim 5, it is characterised in that the locking member (13) is rivet or screw or riveting point
Punching structure.
7. rotor according to claim 5, it is characterised in that be provided with the core packet (11) X with it is described
Lock hole (112) corresponding to locking member (13), the number of the lock hole (112) and the permanent magnet on each core packet (11)
(113) number is equal, wherein, X >=4, X are even number.
8. rotor according to claim 7, it is characterised in that any two on each core packet (11) is adjacent
The lock hole (112) is in opposite direction to deviateing with the permanent magnet (113) along layouting in the rotor circumference
Direction anglec of rotation A, adjacent two sections of core packet (11) offset angular B or C installed, wherein, A=β/2, B=
360 °/X- β, C=360 °/X+ β.
9. rotor according to any one of claim 1 to 8, it is characterised in that set on the rotor core (10)
Axis hole (12) is equipped with, rotating shaft (14) is installed in the axis hole (12), the rotating shaft (14) is interference fitted with the axis hole (12)
Connection.
10. rotor according to any one of claim 1 to 8, it is characterised in that set on the rotor core (10)
Axis hole (12) is equipped with, rotating shaft (14) is installed in the axis hole (12), the rotating shaft (14) coordinates with the axis hole (12) gap,
And fixed by key connection or welding connecting mode is fixed.
11. rotor according to any one of claim 1 to 8, it is characterised in that the horizontal stroke of the permanent magnet (113)
Section is circular arc or strip or polygon.
12. rotor according to any one of claim 1 to 8, it is characterised in that the permanent magnet (113) is embedded
It is fixed in the core packet (11) or amplexiforms the periphery for being fixed on the core packet (11).
13. a kind of motor, including rotor, it is characterised in that the rotor is any one of claim 1 to 12 institute
The rotor stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710815176.6A CN107591920A (en) | 2017-09-11 | 2017-09-11 | Rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710815176.6A CN107591920A (en) | 2017-09-11 | 2017-09-11 | Rotor and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107591920A true CN107591920A (en) | 2018-01-16 |
Family
ID=61052012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710815176.6A Pending CN107591920A (en) | 2017-09-11 | 2017-09-11 | Rotor and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107591920A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111614178A (en) * | 2020-06-02 | 2020-09-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor core, motor rotor, motor and system with motor |
| CN111614176A (en) * | 2020-05-11 | 2020-09-01 | 珠海格力电器股份有限公司 | Rotor structure, motor and vehicle |
| CN111971881A (en) * | 2018-10-25 | 2020-11-20 | 宝马股份公司 | Rotor |
| CN112470365A (en) * | 2018-06-07 | 2021-03-09 | 马威动力控制技术有限公司 | Rotor for an electric machine and electric machine comprising said rotor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203850942U (en) * | 2014-05-28 | 2014-09-24 | 华域汽车电动系统有限公司 | Four-segmented inclined-pole permanent magnet motor rotor formed by single punching sheets |
| CN104600946A (en) * | 2013-12-25 | 2015-05-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Synchronous reluctance motor |
| CN207200411U (en) * | 2017-09-11 | 2018-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and motor |
-
2017
- 2017-09-11 CN CN201710815176.6A patent/CN107591920A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600946A (en) * | 2013-12-25 | 2015-05-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Synchronous reluctance motor |
| CN203850942U (en) * | 2014-05-28 | 2014-09-24 | 华域汽车电动系统有限公司 | Four-segmented inclined-pole permanent magnet motor rotor formed by single punching sheets |
| CN207200411U (en) * | 2017-09-11 | 2018-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and motor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112470365A (en) * | 2018-06-07 | 2021-03-09 | 马威动力控制技术有限公司 | Rotor for an electric machine and electric machine comprising said rotor |
| CN111971881A (en) * | 2018-10-25 | 2020-11-20 | 宝马股份公司 | Rotor |
| CN111971881B (en) * | 2018-10-25 | 2023-09-29 | 宝马股份公司 | rotor |
| CN111614176A (en) * | 2020-05-11 | 2020-09-01 | 珠海格力电器股份有限公司 | Rotor structure, motor and vehicle |
| CN111614178A (en) * | 2020-06-02 | 2020-09-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor core, motor rotor, motor and system with motor |
| CN111614178B (en) * | 2020-06-02 | 2022-04-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor core, motor rotor, motor and system with motor |
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