CN105932804A - Rotor for motor and motor with rotor - Google Patents
Rotor for motor and motor with rotor Download PDFInfo
- Publication number
- CN105932804A CN105932804A CN201610459577.8A CN201610459577A CN105932804A CN 105932804 A CN105932804 A CN 105932804A CN 201610459577 A CN201610459577 A CN 201610459577A CN 105932804 A CN105932804 A CN 105932804A
- Authority
- CN
- China
- Prior art keywords
- rotor core
- rotor
- motor
- permanent magnet
- breach
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a rotor for a motor and the motor with the rotor. The rotor for the motor comprises a rotor core and a plurality of permanent magnets, wherein the rotor core comprises a rotating shaft hole; a gap with an inward recess is formed in the peripheral surface of the rotor core; the permanent magnets are arranged in the rotor core and are adjacent to the gap; in the cross section of the rotor core, each permanent magnet extends along the radial direction of the rotor core and the plurality of permanent magnets are arranged along the peripheral direction of the rotor core; and the same polarities of the adjacent permanent magnets in the peripheral direction of the rotor core are opposite. According to the rotor for the motor, the magnetic concentrating capability can be improved under the condition of not reducing the placement space for the permanent magnets; and the air-gap magnetic field is improved.
Description
Technical field
The present invention relates to technical field of motor manufacture, especially relate to a kind of rotor for motor and have described for
The motor of the rotor of motor.
Background technology
At present, motor many employings Surface Mount magnetic watts type rotor structure such as such as air-conditioning draught fan permanent magnetic brushless, in order to full
The efficiency requirement of foot motor, generally uses the mode of the axial length increasing permanent magnet, utilizes poly-magnetic effect to increase gas
Gap magnetic is close, thus improves efficiency, but, the poly-magnetic efficiency of permanent magnet is relatively low.
The motor of prior art uses built-in magnetic watts type rotor structure to improve poly-magnetic energy power, but, this structure transfer
The arc mode of cutting of outer peripheral face three sections of arcs of employing of sub-iron core is to form non-uniform gap, so that air-gap field is optimized,
So after cutting arc, the placement location inward compression of permanent magnet, the placement space of permanent magnet diminishes.
Summary of the invention
It is contemplated that at least solve one of technical problem present in prior art.To this end, the present invention proposes a kind of use
In the rotor of motor, the described rotor for motor can improve poly-magnetic energy power, improves air-gap field, and does not reduce permanent magnet
Placement space.
The present invention also proposes a kind of motor with the described rotor for motor.
The rotor for motor of embodiment according to a first aspect of the present invention, including: rotor core, described rotor core has
Shaft hole, the outer peripheral face of described rotor core is provided with the breach caved inward；Multiple permanent magnets, described permanent magnet is built in
In described rotor core and adjacent to described breach, in the cross section of described rotor core, each described permanent magnet is along described turn
Sub-iron core radially extend and multiple described permanent magnet is along the circumferential array of described rotor core, in the circumference of described rotor core
The same polarity of upper adjacent described permanent magnet is relative.
The rotor for motor according to embodiments of the present invention, utilizes the breach on the outer peripheral face of rotor core, it is not necessary to reduce forever
The placement space of magnet, just can improve poly-magnetic energy power, improves air gap flux density, reduces cogging torque and torque ripple, changes
The waveform of kind counter electromotive force, thus lifting motor performance.
It addition, the rotor for motor according to embodiments of the present invention also has a following additional technical characteristic:
According to some embodiments of the present invention, described rotor core is provided with multiple magnet and accommodates groove, and multiple described permanent magnets divide
It is not assemblied in multiple described magnet to accommodate in groove.
Further, each described magnet accommodates outer peripheral face and the outer peripheral face of described rotor core of the through described rotor core of groove
Be configured with multipair blocked ear, two described blocked ears of every centering respectively from described magnet accommodate the two side of groove stretch out and by described forever
Magnet is pressed on this magnet and accommodates in groove.
Alternatively, in the cross section of described rotor core, the outer surface of each described blocked ear and the center of circle of described rotor core
Between distance equal to the maximum radius of described rotor core.
Alternatively, the diapire that each described magnet accommodates groove is provided with the brace rod for supporting described permanent magnet.
According to some embodiments of the present invention, axially extending outside described rotor core along described rotor core of described breach
On the whole length direction of side face.
According to some embodiments of the present invention, the cross section of described breach is triangle and the corner of described breach and described
Rounding between inwall and the outer peripheral face of described rotor core of breach.
Further, the length at the edge of the neighbouring described permanent magnet of the cross section of described breach is less than the cross section of described breach
The length at the edge away from described permanent magnet.
According to some embodiments of the present invention, described breach is multipair, and two described breach of every centering are at described rotor core
Circumference on lay respectively at the both sides of described permanent magnet.
Preferably, in the cross section of described rotor core, two described breach of every centering are with described permanent magnetism between the two
The central axis of body is that axis of symmetry is symmetrical arranged.
According to some embodiments of the present invention, described permanent magnet is magnet steel.
The motor of embodiment according to a second aspect of the present invention, including described in embodiment according to a first aspect of the present invention for motor
Rotor.
Motor according to embodiments of the present invention, utilizes the rotor for motor as above, and poly-magnetic energy power is good, air-gap field
Good distribution, thus performance is good.
The additional aspect of the present invention and advantage will part be given in the following description, and part will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of the rotor for motor according to embodiments of the present invention.
Reference:
For the rotor 1 of motor,
Rotor core 100, shaft hole 101, breach 102, magnet accommodates groove 103, blocked ear 104, brace rod 105,
Permanent magnet 200.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below by ginseng
The embodiment examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
Describe the rotor 1 for motor of embodiment according to a first aspect of the present invention below with reference to Fig. 1, this is used for motor
Rotor 1 is applicable to built-in magnetic watts type permanent magnetic brushless, it is possible to increase poly-magnetic energy power, improves air-gap field, and does not reduce forever
The placement space of magnet.
As it is shown in figure 1, the rotor 1 for motor according to embodiments of the present invention, including rotor core 100 and multiple permanent magnetism
Body 200.
Specifically, rotor core 100 has shaft hole 101, the outer peripheral face of rotor core 100 be provided with cave inward lack
Mouth 102, i.e. the outer peripheral face of rotor core 100 is partially toward the central axis depression of rotor core 100.Preferably, lack
Mouthfuls 102 along the whole length direction of the axially extending outer peripheral face at rotor core 100 of rotor core 100, thus to turning
Air-gap field on the whole length direction of the outer peripheral face of sub-iron core 100 is optimized.Permanent magnet 200 is built in rotor core
In 100 and adjacent to breach 102, in the cross section of rotor core 100, each permanent magnet 200 is along the footpath of rotor core 100
To extending and multiple permanent magnet 200 is along the circumferential array of rotor core 100, wherein, phase in the circumference of rotor core 100
The same polarity of adjacent permanent magnet 200 is relative, i.e. in the circumference of rotor core 100, the polarity of adjacent permanent magnet 200 is identical
Side is relative.Alternatively, permanent magnet 200 is magnet steel such that it is able to adapt to high-temperature work environment.
The rotor 1 for motor according to embodiments of the present invention, utilizes the breach 102 on the outer peripheral face of rotor core 100,
Without reducing the placement space of permanent magnet 200, just can improve poly-magnetic energy power, improve air gap flux density, reduce cogging torque
And torque ripple, improve the waveform of counter electromotive force, thus lifting motor performance.
According to some embodiments of the present invention, as it is shown in figure 1, rotor core 100 is provided with multiple magnet accommodates groove 103, many
Individual permanent magnet 200 is respectively assembled at multiple magnet and accommodates in groove 103, thus permanent magnet 200 can be securely fixed in rotor
In iron core 100 and easy to assembly.Such as, permanent magnet 200 and magnet accommodate groove 103 respectively along rotor core 100
The strip radially extended.
Further, as it is shown in figure 1, each magnet accommodates the outer peripheral face of the through rotor core of groove 103 100, and rotor ferrum
The outer peripheral face of core 100 is configured with multipair blocked ear 104, and two blocked ears 104 of every centering accommodate the two of groove 103 respectively from magnet
Sidewall stretches out and permanent magnet 200 is pressed on this magnet and accommodates in groove 103, so, permanent magnet 200 can be avoided from magnet
Accommodate in groove 103, it is ensured that permanent magnet 200 is reliably fixed on magnet and accommodates in groove 103, thus improves the reliable of motor
Property.Such as, two blocked ears 104 of every centering are accommodated the sidewall circumference court along rotor core 100 of groove 103 respectively by magnet
Extend to each other, with by the external end impacts of permanent magnet 200 in this magnet accommodates groove 103.It is appreciated that permanent magnet 200
One end of the outer peripheral face that outer end is adjacent rotor iron core 100, the inner of permanent magnet 200 be away from rotor core 100 outside
One end of side face.
Alternatively, as it is shown in figure 1, in the cross section of rotor core 100, the outer surface of each blocked ear 104 and rotor ferrum
Distance between the center of circle of core 100 is equal to the maximum radius of rotor core 100.That is, in the cross section of rotor core 100,
The outer contour of each blocked ear 104 and the outer contour of rotor core 100 are positioned on same circumference, thus, at rotor core
100 radially, and the air gap radius being positioned at rotor core 100 outside permanent magnet 200 is constant, the placement of permanent magnet 200
Space does not reduces.
Alternatively, as it is shown in figure 1, the diapire that each magnet accommodates groove 103 is provided with the support for supports permanent magnets 200
Muscle 105, to reduce the use doses of permanent magnet 200, and has substantially no effect on the permanent magnet 200 lifting effect to motor performance.
Here, magnet accommodates the diapire of groove 103 and refers to the wall that magnet accommodates the inner of groove 103, i.e. magnet accommodates groove 103
The wall of one end of neighbouring shaft hole 101.
According to some embodiments of the present invention, as it is shown in figure 1, the cross section of breach 102 can be triangle, and breach 102
Corner and the outer peripheral face of the inwall of breach 102 and rotor core 100 between rounding such that it is able to avoid stress collection
In, improve the structural strength at breach 102.Further, as it is shown in figure 1, the neighbouring permanent magnetism of the cross section of breach 102
The length at the edge of body 200 is less than the length at the edge away from permanent magnet 200 of the cross section of breach 102, to change further
Kind air gap flux density.Such as, the turning of breach 102 is towards the permanent magnet 200 of this breach 102 neighbouring.
According to some embodiments of the present invention, as it is shown in figure 1, breach 102 is multipair, two breach 102 of every centering exist
The both sides of permanent magnet 200 are laid respectively in the circumference of rotor core 100, thus the good distribution of air-gap field.Preferably,
In the cross section of rotor core 100, two breach 102 of every centering are with the central axis of permanent magnet 200 between the two
It is symmetrical arranged for axis of symmetry, i.e. two breach 102 of every centering are about the central axis pair of permanent magnet 200 between the two
Claiming, thus poly-magnetic energy power is more preferable, air-gap field distribution is more excellent and easily processed into type.
Below with reference to the accompanying drawings describe the rotor 1 for motor of a specific embodiment according to the present invention in detail, be worth reason
Solve, simply exemplary illustration described below, and be not considered as limiting the invention.
As it is shown in figure 1, the rotor 1 for motor according to embodiments of the present invention, including rotor core 100 and multiple permanent magnetism
Body 200.
Specifically, rotor core 100 has shaft hole 101, and rotor core 100 is provided with respectively along rotor core 100
Multiple magnets of the strip radially extended accommodate groove 103, each magnet accommodates outside the through rotor core of groove 103 100
Side face and each magnet accommodate the diapire of groove 103 and are provided with brace rod 105.Permanent magnet 200 is the footpath along rotor core 100
To the magnet steel of the strip extended, the outer peripheral face of rotor core 100 is configured with multipair blocked ear 104, two blocked ears of every centering
104 are accommodated the two side of groove 103 by magnet respectively extends towards one another along the circumference of rotor core 100, with by permanent magnet 200
It is pressed on this magnet to accommodate in groove 103.In the cross section of rotor core 100, the outer contour of each blocked ear 104 with turn
The outer contour of sub-iron core 100 is positioned on same circumference, multiple permanent magnets 200 along the circumferential array of rotor core 100,
In the circumference of rotor core 100, the same polarity of adjacent permanent magnet 200 is relative.
Wherein, the outer peripheral face of rotor core 100 is provided with the multipair breach 102 caved inward, transversal at rotor core 100
In face, two breach 102 of every centering are symmetrical about the central axis of permanent magnet 200 between the two.Each breach 102
Along the whole length direction of the axially extending outer peripheral face at rotor core 100 of rotor core 100, breach 102 transversal
Face is rounding between triangle, and the outer peripheral face of the corner of breach 102 and the inwall of breach 102 and rotor core 100
Angle, the turning of breach 102 is towards the permanent magnet 200 of this breach 102 neighbouring.
The rotor 1 for motor according to embodiments of the present invention, utilizes the breach 102 on the outer peripheral face of rotor core 100,
And the distance in the cross section of rotor core 100, between outer surface and the center of circle of rotor core 100 of each blocked ear 104
Equal to the maximum radius of rotor core 100, thus, it is possible not only to improve air gap flux density, reduces cogging torque and torque ripple
Dynamic, improve the waveform of counter electromotive force, and at rotor core 100 radially, be positioned at the rotor ferrum outside permanent magnet 200
The air gap radius of core 100 is constant, thus while improving poly-magnetic energy power and improving air-gap field, it is not necessary to reduce permanent magnetism
The placement space of body 200, and then lifting motor performance.
The motor of embodiment according to a second aspect of the present invention, including described in embodiment according to a first aspect of the present invention for motor
Rotor 1.Alternatively, motor is built-in magnetic watts type permanent magnetic brushless.
Motor according to embodiments of the present invention, utilizes the rotor 1 for motor as above, and poly-magnetic energy power is good, air-gap field
Good distribution, thus performance is good.
Other compositions of motor according to embodiments of the present invention and operation are the most all known
, it is not detailed herein.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length
Degree ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right",
" vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", " counterclockwise ",
Orientation or the position relationship of the instruction such as " axially ", " radially ", " circumferential " are based on orientation shown in the drawings or position
Put relation, be for only for ease of and describe the present invention and simplify description rather than instruction or the device of hint indication or element
Must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or imply relatively important
Property or the implicit quantity indicating indicated technical characteristic.Thus, " first ", the feature of " second " are defined
Can express or implicitly include one or more this feature.In describing the invention, except as otherwise noted,
" multiple " are meant that two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " install ",
" be connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect,
Or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible in by
Between medium be indirectly connected to, can be the connection of two element internals.For the ordinary skill in the art, may be used
Above-mentioned term concrete meaning in the present invention is understood with concrete condition.
In the description of this specification, reference term " embodiment ", " some embodiments ", " specific embodiment ",
It is concrete that the description of " alternative embodiment ", " example " or " some examples " etc. means to combine this embodiment or example describes
Feature, structure, material or feature are contained at least one embodiment or the example of the present invention.In this manual, right
The schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure,
Material or feature can combine in any one or more embodiments or example in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
These embodiments can be carried out multiple change in the case of the principle of the disengaging present invention and objective, revise, replace and become
Type, the scope of the present invention is limited by claim and equivalent thereof.
Claims (12)
1. the rotor for motor, it is characterised in that including:
Rotor core, described rotor core has shaft hole, and the outer peripheral face of described rotor core is provided with the breach caved inward；
Multiple permanent magnets, in described permanent magnet is built in described rotor core and adjacent to described breach, at described rotor core
In cross section, each described permanent magnet along described rotor core radially extend and multiple described permanent magnet is along described rotor core
Circumferential array, in the circumference of described rotor core, the same polarity of adjacent described permanent magnet is relative.
Rotor for motor the most according to claim 1, it is characterised in that described rotor core is provided with multiple magnetic
Body accommodates groove, and multiple described permanent magnets are respectively assembled at multiple described magnet and accommodate in groove.
Rotor for motor the most according to claim 2, it is characterised in that each described magnet accommodates the through institute of groove
The outer peripheral face of the outer peripheral face and described rotor core of stating rotor core is configured with multipair blocked ear, and two described blocked ears of every centering divide
Not do not accommodate the two side of groove from described magnet to stretch out and described permanent magnet is pressed on this magnet and accommodate in groove.
Rotor for motor the most according to claim 3, it is characterised in that in the cross section of described rotor core,
Distance between outer surface and the center of circle of described rotor core of each described blocked ear is equal to the maximum radius of described rotor core.
Rotor for motor the most according to claim 3, it is characterised in that each described magnet accommodates the diapire of groove
It is provided with the brace rod for supporting described permanent magnet.
6. according to the rotor for motor according to any one of claim 1-5, it is characterised in that described breach is along described
On the whole length direction of the axially extending outer peripheral face at described rotor core of rotor core.
7. according to the rotor for motor according to any one of claim 1-5, it is characterised in that described breach transversal
Face be triangle and the corner of described breach and the inwall of described breach and described rotor core outer peripheral face between rounding
Angle.
Rotor for motor the most according to claim 7, it is characterised in that the neighbouring institute of the cross section of described breach
The length at the edge stating permanent magnet is less than the length at the edge away from described permanent magnet of the cross section of described breach.
9. according to the rotor for motor according to any one of claim 1-5, it is characterised in that described breach is multipair,
Two described breach of every centering lay respectively at the both sides of described permanent magnet in the circumference of described rotor core.
Rotor for motor the most according to claim 9, it is characterised in that at the cross section of described rotor core
In, two described breach of every centering are symmetrical arranged with the central axis of described permanent magnet between the two for axis of symmetry.
11. rotors for motor according to claim 1, it is characterised in that described permanent magnet is magnet steel.
12. 1 kinds of motors, it is characterised in that include according to the rotor for motor according to any one of claim 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459577.8A CN105932804A (en) | 2016-06-20 | 2016-06-20 | Rotor for motor and motor with rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459577.8A CN105932804A (en) | 2016-06-20 | 2016-06-20 | Rotor for motor and motor with rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105932804A true CN105932804A (en) | 2016-09-07 |
Family
ID=56831980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610459577.8A Pending CN105932804A (en) | 2016-06-20 | 2016-06-20 | Rotor for motor and motor with rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105932804A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208587A (en) * | 2016-09-26 | 2016-12-07 | 威灵（芜湖）电机制造有限公司 | Rotor core, rotor and self-starting permanent magnet synchronous motor |
| CN112994295A (en) * | 2021-04-06 | 2021-06-18 | 珠海格力电器股份有限公司 | Motor rotor and permanent magnet synchronous motor |
| CN115189495A (en) * | 2022-06-17 | 2022-10-14 | 无锡世珂微电机有限公司 | Ferrite permanent magnet motor of automobile air conditioner compressor |
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| CN204886462U (en) * | 2015-07-10 | 2015-12-16 | 江冉升 | Permanent -magnet machine's rotor |
| CN105490414A (en) * | 2015-12-25 | 2016-04-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet rotor and permanent magnet motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8598763B2 (en) * | 2008-05-08 | 2013-12-03 | Daikin Industries, Ltd. | Field element |
| CN202309249U (en) * | 2011-10-19 | 2012-07-04 | 中山大洋电机制造有限公司 | Electric motor structure |
| CN202524266U (en) * | 2012-02-28 | 2012-11-07 | 珠海格力电器股份有限公司 | Permanent magnet rotor and permanent magnet motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208587A (en) * | 2016-09-26 | 2016-12-07 | 威灵（芜湖）电机制造有限公司 | Rotor core, rotor and self-starting permanent magnet synchronous motor |
| CN112994295A (en) * | 2021-04-06 | 2021-06-18 | 珠海格力电器股份有限公司 | Motor rotor and permanent magnet synchronous motor |
| CN115189495A (en) * | 2022-06-17 | 2022-10-14 | 无锡世珂微电机有限公司 | Ferrite permanent magnet motor of automobile air conditioner compressor |
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Application publication date: 20160907 |