CN206099565U - Electric motor rotor and possess its permanent -magnet machine - Google Patents
Electric motor rotor and possess its permanent -magnet machine Download PDFInfo
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- CN206099565U CN206099565U CN201621150720.7U CN201621150720U CN206099565U CN 206099565 U CN206099565 U CN 206099565U CN 201621150720 U CN201621150720 U CN 201621150720U CN 206099565 U CN206099565 U CN 206099565U
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- rotor
- magnet
- gap hole
- gap
- rotor core
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- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model provides an electric motor rotor and possess its permanent -magnet machine, electric motor rotor include rotor core, magnet holding tank and magnet, and the magnet holding tank sets up in rotor core, are provided with the magnet in the magnet holding tank, and rotor core is provided with the gap hole, and the gap hole sets up the rotor circumference part in the magnet holding tank outside, and the outer periphery of rotor is run through in the gap hole. The utility model provides an electric motor rotor can reduce the invalid magnetic flow of rotor core periphery part, 5 times, 7 subharmonic among the elimination stator winding among the induced voltage to can not produce unnecessary radial force and axial force, thereby reduce the noise of motor, reduce the iron loss simultaneously and improve the electric efficiency.
Description
Technical field
This utility model is related to technical field of motors, more particularly to a kind of rotor and the magneto with it.
Background technology
It is 3n (n=2,3,4 ...) groove to motor stator at present in magneto, rotor is 2n (n=2,3,4 ...) pole
Magneto, its rotor in the rotor core of magneto as shown in figure 1, be provided with multiple closing seam lyriform pores, the closing
Gap hole does not extend to outer circumference surface, i.e., the closing seam lyriform pore is not extended through in the air gap of motor, and the structure can make magnet
Magnetic flux radially pass in and out, while so that the magnetic flux produced by stator winding current reduces the circumferencial direction of circumferentially part iron core
It is roundabout.
But weak point is, due to there is certain distance d1 between closing seam lyriform pore and rotor outer circle week, in the region endogenous cause of ill
For the presence for having rotor punching, so a number of invalid magnetic flux occurs, the voltage sensed in stator winding contains a lot
The distorted waveform of higher hamonic wave, particularly there is larger 5 time, 7 subharmonic, causes noise to increase, and also causes because of iron loss increase
Electric efficiency is reduced.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of rotor and the magneto with it, can subtract
The invalid magnetic flux of few rotor core outer peripheral portion, can significantly eliminate in stator winding in induced voltage relative to traditional structure
5 times, 7 order harmonic components.
One side of the present utility model provides a kind of rotor, using below scheme：
A kind of rotor, including rotor core, magnet receptacle and magnet, the magnet receptacle is arranged at described turning
In sub- iron core, the magnet is provided with the magnet receptacle, gap hole, the gap hole are provided with the rotor core
The rotor circumference part being arranged on the outside of the magnet receptacle, the gap hole extends through rotor outer circle side face.
Preferably, quantity N >=4 in the gap hole.
Preferably, the side wall of the direction that the gap hole extends towards the rotor outer circle side face and the magnet receptacle
Vertically.
Preferably, the gap hole is symmetrical with regard to the rotor radius through the magnet receptacle center.
Preferably, the distance between adjacent slits hole is gradually reduced from centre position to both sides.
Preferably, gap width t in the gap hole is less than the distance that it extends towards the rotor outer circle side face.
Preferably, passage is also included in the rotor core, the passage is axially through the rotor core.
Preferably, the rotor core is laminated by rotor punching, and the bottom surface in the gap hole accommodates to the magnet
Groove apart from 1-3 times that d is the rotor punching thickness.
Preferably, the rotor core is laminated by rotor punching, and gap width t in the gap hole is the rotor
1-3 times of punching thickness.
Other side of the present utility model provides a kind of magneto, using below scheme：
A kind of magneto, including rotor and stator, the rotor is foregoing rotor.
The rotor that this utility model is provided reduces the invalid magnetic flux of rotor core outer peripheral portion, eliminates stator winding
5 times, 7 subharmonic in middle induced voltage, and unnecessary radial force and axial force will not be produced, so as to reduce making an uproar for motor
Sound, while reducing iron loss and improving electric efficiency.
Description of the drawings
By referring to the drawings to the description of this utility model embodiment, of the present utility model above-mentioned and other mesh
, feature and advantage will be apparent from, in the accompanying drawings：
Fig. 1 is existing motor rotor construction schematic diagram；
Fig. 2 is a kind of motor rotor construction schematic diagram involved by this utility model；
Fig. 3 is Fig. 2 partial structurtes enlarged diagrams；
Fig. 4 is existing permanent magnet machine rotor distribution diagram of magnetic line of force；
Fig. 5 is the permanent magnet machine rotor distribution diagram of magnetic line of force involved by this utility model；
Fig. 6 is the subharmonic of permanent magnet motor stator winding induced voltage 5 of the present utility model and 7 subharmonic and prior art
Comparison diagram；
In figure：1- rotor cores；2- magnet receptacles；31- closing seam lyriform pores；32- gaps hole；4- magnets；5- passages；
The first gaps of a- hole；The second gaps of b- hole；The gap holes of c- the 3rd；D- Fpir Crevices lyriform pores；The gap holes of e- the 5th；The gaps of f- the 6th
Hole；I-conventional permanent magnet motor rotor harmonic wave；II-this utility model permanent magnet machine rotor harmonic wave.
Specific embodiment
This utility model is described below based on embodiment, but this utility model is not restricted to these enforcements
Example.
As shown in figure 1, traditional rotor includes rotor core 1, magnet receptacle 2, many is provided with rotor core 1
Individual closing seam lyriform pore 31 and passage 5, magnet 4 is contained in magnet receptacle 2, wherein, closing seam lyriform pore 31 is not extended to
The outer circumference surface of rotor, i.e. the closing seam lyriform pore are not extended through in the air gap of motor, and traditional rotor can make magnet
Magnetic flux is radially passed in and out, while so that the magnetic flux produced by stator winding current reduces the circumference of circumferentially part rotor iron core 1
Direction is roundabout, improves the magnetic flux distribution of outer peripheral portion rotor core 1 and reduces noise and vibration, as shown in figure 4, due to closing
There is certain distance d1 between gap hole and rotor outer circle week, because there is the presence of rotor punching in the region, occur
A number of invalid magnetic flux, the voltage sensed in stator winding contains the distorted waveform of many higher hamonic waves, particularly have compared with
Big 5 subharmonic, 7 subharmonic, cause noise to increase, and also cause electric efficiency to reduce because of iron loss increase.
As shown in Fig. 2 a kind of rotor that this utility model is provided, including rotor core 1, magnet receptacle 2 and magnetic
Magnet 4 is provided with body 4, magnet receptacle 2, gap hole 32 is provided with rotor core 1, gap hole 32 is arranged on magnet appearance
Receive the rotor circumference part in the outside of groove 2, gap hole 32 extends through rotor outer circle side face, namely extends through in the air gap of motor.Energy
The invalid magnetic flux of the outer peripheral portion of rotor core 1 is reduced, 5 times, 7 subharmonic in stator winding in induced voltage are thoroughly eliminated,
Unnecessary radial force and axial force will not be produced, so as to reduce the noise of motor, while reducing iron loss and improving motor effect
Rate, as shown in fig. 6,5 times, 7 order harmonic components in stator winding in induced voltage can be significantly eliminated relative to traditional structure,
Wherein 5 subharmonic induced voltages lower 40%, and 7 subharmonic induced voltages lower more than 60%.
Further, quantity N >=4 in gap hole 32, with the invalid magnetic of the maximized reduction outer peripheral portion of rotor core 1
It is logical.
Further, gap hole 32 is vertical with the side wall of magnet receptacle 2 towards the direction that rotor outer circle side face extends, profit
In the invalid magnetic flux for reducing the outer peripheral portion of rotor core 1.
Further, gap hole 32 is symmetrical with regard to the rotor radius through the center of magnet receptacle 2.
Further, the distance between adjacent slits hole 32 is gradually reduced from centre position to both sides.In one embodiment,
As shown in figure 3, gap hole 32 includes the first gap hole a, the second gap hole b, the 3rd gap hole c, Fpir Crevices lyriform pore d, the 5th seam
Lyriform pore e, the 6th gap hole f, wherein, the first gap hole a and the 6th gap hole f, the second gap hole b and the 5th gap hole e, the 3rd
Gap hole c and Fpir Crevices lyriform pore d, symmetrical along rotor radius respectively, the 3rd gap hole c and Fpir Crevices lyriform pore of close centre
The distance between d is L1, and successively the distance between outside Fpir Crevices lyriform pore d and the 5th gap hole e are L2, the 5th gap hole e
It is L3 with the distance between the 6th gap hole f, meets L1>L2>L3.
Further, gap width t in gap hole 32 is less than the distance that it extends towards rotor outer circle side face, so as to constitute
Approximately radial slim-lined construction, beneficial to the invalid magnetic flux for reducing the outer peripheral portion of rotor core 1.
Further, rotor core 1 includes passage 5, and passage 5 produces can rotor axially through rotor core 1
Raw heat is distributed.
Further, rotor core 1 is laminated by rotor punching, the bottom surface in gap hole 32 to magnet receptacle 2 away from
From 1-3 times that d is rotor punching thickness.
Further, rotor core 1 is laminated by rotor punching, and gap width t in gap hole 32 is that rotor punching is thick
1-3 times of degree.
This utility model additionally provides a kind of magneto, including rotor and stator, and rotor is motor of the present utility model
Rotor.Realize reduce the outer peripheral portion of rotor core 1 invalid magnetic flux, the noise of motor can be reduced, at the same reduce iron loss and
Improve electric efficiency.As shown in figure 5, the magnetic line of force of this utility model permanent magnet machine rotor outer peripheral portion is neat, without full of twists and turns
Phenomenon, can thoroughly eliminate 5 times, 7 subharmonic in stator winding in induced voltage.
The rotor and the magneto with it that this utility model is provided can reduce rotor core outer peripheral portion
Invalid magnetic flux, thoroughly eliminate 5 times, 7 subharmonic in stator winding in induced voltage, can be significantly relative to traditional structure
5 times, 7 order harmonic components in induced voltage in stator winding are eliminated, wherein 5 subharmonic induced voltages lower 40%, 7 subharmonic
Induced voltage lowers more than 60%, and will not produce unnecessary radial force and axial force, so as to reduce the noise of motor, together
When reduce iron loss and improve electric efficiency.
Preferred embodiment of the present utility model is the foregoing is only, this utility model is not limited to, for this area
For technical staff, this utility model can have various changes and change.All institutes within spirit of the present utility model and principle
Any modification, equivalent substitution and improvements of work etc., should be included within protection domain of the present utility model.
Claims (10)
1. a kind of rotor, including rotor core, magnet receptacle and magnet, the magnet receptacle is arranged at the rotor
In iron core, the magnet is provided with the magnet receptacle, it is characterised in that gap hole is provided with the rotor core,
The gap hole is arranged on the rotor circumference part on the outside of the magnet receptacle, and the gap hole extends through rotor outer circle week
Face.
2. rotor according to claim 1, it is characterised in that quantity N >=4 in the gap hole.
3. rotor according to claim 1, it is characterised in that prolong towards the rotor outer circle side face in the gap hole
The direction stretched is vertical with the side wall of the magnet receptacle.
4. rotor according to claim 1, it is characterised in that the gap hole is with regard to through the magnet receptacle
The rotor radius at center is symmetrical.
5. rotor according to claim 4, it is characterised in that the distance between adjacent slits hole from centre position to
Both sides are gradually reduced.
6. rotor according to claim 1, it is characterised in that gap width t in the gap hole is less than its direction
The distance that the rotor outer circle side face extends.
7. rotor according to claim 1, it is characterised in that also include passage in the rotor core, it is described
Passage is axially through the rotor core.
8. the rotor according to any one of claim 1-7, it is characterised in that the rotor core is by rotor punching layer
It is folded to form, the bottom surface in the gap hole to the magnet receptacle apart from 1-3 times that d is the rotor punching thickness.
9. the rotor according to any one of claim 1-7, it is characterised in that the rotor core is by rotor punching layer
Folded to form, gap width t in the gap hole is 1-3 times of the rotor punching thickness.
10. a kind of magneto, including rotor and stator, it is characterised in that the rotor is described in any one of claim 1-9
Rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621150720.7U CN206099565U (en) | 2016-10-24 | 2016-10-24 | Electric motor rotor and possess its permanent -magnet machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621150720.7U CN206099565U (en) | 2016-10-24 | 2016-10-24 | Electric motor rotor and possess its permanent -magnet machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206099565U true CN206099565U (en) | 2017-04-12 |
Family
ID=58484943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621150720.7U Active CN206099565U (en) | 2016-10-24 | 2016-10-24 | Electric motor rotor and possess its permanent -magnet machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206099565U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374655A (en) * | 2016-10-24 | 2017-02-01 | 珠海凌达压缩机有限公司 | Motor rotor and permanent-magnet motor with same |
-
2016
- 2016-10-24 CN CN201621150720.7U patent/CN206099565U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374655A (en) * | 2016-10-24 | 2017-02-01 | 珠海凌达压缩机有限公司 | Motor rotor and permanent-magnet motor with same |
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