CN206370734U - Rotor structure, motor and compressor - Google Patents
Rotor structure, motor and compressor Download PDFInfo
- Publication number
- CN206370734U CN206370734U CN201621236763.7U CN201621236763U CN206370734U CN 206370734 U CN206370734 U CN 206370734U CN 201621236763 U CN201621236763 U CN 201621236763U CN 206370734 U CN206370734 U CN 206370734U
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- Prior art keywords
- magnetic shoe
- mounting groove
- rotor structure
- rotor
- rotor core
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- 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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Abstract
The utility model provides a kind of rotor structure, motor and compressor.Rotor structure includes rotor core, and mounting groove is offered along the axial direction of rotor core；Magnetic shoe, magnetic shoe is arranged in mounting groove, and cell wall and the magnetic shoe of mounting groove are abutted against, the curved face of inner surface of magnetic shoe, and the radius of arcwall face is less than the radius of rotor core.So set and enable magnetic shoe well in the mounting groove of rotor core so that magnetic shoe will not loosen during magnetic shoe stickup is carried out, and be effectively improved the performance of the motor with the rotor core.
Description
Technical field
The utility model is related to compressor apparatus technical field, in particular to a kind of rotor structure, motor and compression
Machine.
Background technology
Surface Mount magnetic shoe rotor structure of the prior art, the interior arc radius of magnetic shoe is equal with the outer arc radius of rotor core.By
In rotor core and magnetic shoe manufacture craft precision it cannot be guaranteed that radius is essentially equal, there is the outer arc radius of rotor and be less than magnetic shoe inner arc
During radius, there is gap and cause matching loose in magnetic shoe two ends.When making stickup rotor magnetic shoe, often there is glue two ends smearing
The uneven situation for causing to be inclined to one end.Above-mentioned situation can cause winding back emf sine degree to be deteriorated so that motor performance is poor,
The problems such as can not being guaranteed.
Utility model content
Main purpose of the present utility model is to provide a kind of rotor structure, motor and compressor, to solve prior art
The problem of middle magnetic shoe installs easy loosening.
To achieve these goals, according to one side of the present utility model there is provided a kind of rotor structure, including：Turn
Sub- iron core, mounting groove is offered along the axial direction of rotor core；Magnetic shoe, magnetic shoe is arranged in mounting groove, the cell wall of mounting groove
Abutted against with magnetic shoe, the curved face of inner surface of magnetic shoe, the radius of arcwall face is less than the radius of rotor core.
Further, the two ends of the close cell wall of arcwall face are in contact with the bottom land of mounting groove, and the middle part of arcwall face
There is gap between the middle part of bottom land, gap is used to inject bonding agent so that magnetic shoe is fixed with rotor core.
Further, the maximum in gap is λ, wherein, 0.2mm≤λ≤0.4mm.
Further, the radius of rotor core is R1, R1Obtained by below equation：
Wherein,
R2For the radius of arcwall face；
λ is the width of the maximum in gap；
θ2For the corresponding central angle of magnetic shoe.
Further, the central angle of mounting groove is θ1, θ1Obtained by below equation：
Further, mounting groove is multiple, and outer peripheral face of multiple mounting grooves along rotor core is set, and is all provided with each mounting groove
It is equipped with magnetic shoe.
Further, multiple mounting grooves being arranged circumferentially along rotor core.
Further, magnetic shoe protrudes from mounting groove setting.
According to other side of the present utility model there is provided a kind of motor, including rotor structure, rotor structure is above-mentioned
Rotor structure.
According to other side of the present utility model there is provided a kind of compressor, including rotor structure, rotor structure is upper
The rotor structure stated.
Using the technical solution of the utility model, the rotor structure includes rotor core and magnetic shoe.Along the axle of rotor core
Mounting groove is offered to direction.Magnetic shoe is arranged in mounting groove, and cell wall and the magnetic shoe of mounting groove are abutted against, and the inner surface of magnetic shoe is in
Arcwall face, the radius of arcwall face is less than the radius of rotor core.So setting enables magnetic shoe to be arranged on rotor iron well
In the mounting groove of core so that magnetic shoe will not loosen during magnetic shoe stickup is carried out, it is effectively improved with this turn
The performance of the motor of sub- iron core.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding to of the present utility model, this practicality
New schematic description and description is used to explain the utility model, does not constitute to improper restriction of the present utility model.
In the accompanying drawings：
Fig. 1 shows the structural representation of the embodiment according to rotor structure of the present utility model.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
10th, rotor core；20th, magnetic shoe.
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 utility model 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 using
Term 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 process, method, system, product or the equipment of series of steps or unit 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, such 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 levied.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.If for example, the device in accompanying drawing is squeezed, be 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.
Now, the illustrative embodiments according to the application are more fully described with reference to the accompanying drawings.However, these are exemplary
Embodiment can be implemented by many different forms, and should not be construed to be limited solely to embodiment party set forth herein
Formula.It should be appreciated that thesing embodiments are provided so that disclosure herein is thoroughly and complete, and these are shown
The design of example property embodiment is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, it is possible to expand
The big thickness of layer and region, and make identical device is presented with like reference characters, thus they are retouched by omitting
State.
With reference to shown in Fig. 1, according to embodiment of the present utility model, there is provided a kind of rotor structure.
Specifically, the rotor structure includes rotor core 10 and magnetic shoe 20.Offered along the axial direction of rotor core 10
Mounting groove.Magnetic shoe 20 is arranged in mounting groove, and cell wall and the magnetic shoe 20 of mounting groove are abutted against, and the inner surface of magnetic shoe 20 is curved
Face, the radius of arcwall face is less than the radius of rotor core 10.
In the present embodiment, so setting enables magnetic shoe 20 well in the mounting groove of rotor core 10,
So that will not be loosened carrying out magnetic shoe 20 during magnetic shoe 20 is pasted, it is effectively improved with the rotor core 10
The performance of motor.It is worth noting that, the arc of " radius of arcwall face " referred to herein for the inner peripheral surface of the cross section of magnetic shoe 20
The radius of circle where shape line, i.e., such as the R in Fig. 12Shown, " radius of rotor core 10 " refers to the outer peripheral face of rotor core 10
The radius of circle where the radius of circle, the i.e. curved face of bottom land of mounting groove, the arcwall face where arcwall face, as shown in figure 1, rotor
The outer peripheral face of iron core is the radius such as R of extrados1It is shown.
Wherein, as shown in figure 1, the two ends of the close cell wall of arcwall face are in contact with the bottom land of mounting groove, and arcwall face
Middle part and bottom land middle part between have gap, gap be used for inject bonding agent so that magnetic shoe 20 is fixed with rotor core 10.
When so setting so that installing magnetic shoe 20, abut against to prevent magnetic shoe in peace with cell wall close to the two ends of the cell wall of mounting groove
It is moved during dress, simultaneously as the radius of arcwall face is less than the radius of rotor core 10 so that when installing magnetic shoe 20,
Magnetic shoe 20 is with having gap on the outer peripheral face of rotor core 10, because the cell wall limitation that magnetic shoe is mounted groove will not be moved,
Therefore, when injecting glue into gap, magnetic shoe will not also be moved, and add the reliability of rotor structure installation.
Preferably, the maximum in gap is λ, wherein, 0.2mm≤λ≤0.4mm.So setting enables magnetic shoe firm
Ground is arranged on rotor core, and the phenomenon that will not be got loose further increasing reliability and the installation of rotor structure
Property.
Wherein, the radius of rotor core 10 is R1, R1Obtained by below equation：
Wherein, R2For the radius of arcwall face, λ is the width of the maximum in gap, θ2For the corresponding central angle of magnetic shoe.So
Setting can further improve the reliability of the rotor structure, be effectively improved the property of the motor with the rotor structure
Energy.
Further, in order to further improve the installation reliability of rotor core 10 and magnetic shoe 20, by the circle of mounting groove
Heart angle is arranged to θ1.Wherein, θ1Obtained by below equation：
Preferably, mounting groove is multiple, and outer peripheral face of multiple mounting grooves along rotor core 10 is set, and is all provided with each mounting groove
It is equipped with magnetic shoe 20.Moreover, multiple mounting grooves being arranged circumferentially along rotor core 10.As shown in figure 1, magnetic shoe 20 protrudes from peace
Tankage is set.The performance of the motor with the rotor structure can equally be improved by so setting.
Specifically, because the design of former magnetic shoe is in order to ensure that winding back emf sine degree is good, so the shape of magnetic shoe is not
It is fit to do changing, winding back emf waveform otherwise can be caused to be deteriorated, influences motor performance.Changed by changing the design of rotor core
Kind above mentioned problem.The outer arc radius of this rotor core is that the radius of rotor core is slightly larger compared with arc radius in magnetic shoe, as shown in Figure 1
(R1＞ R2)。
Magnetic shoe two ends first contact the outer arc radius of rotor when mounted, cooperate such as arch shape, strengthen magnetic shoe and rotor
Coordinate intensity, while when spreading glue is fixed, because this structure two ends, which is picked up in the middle of only, gap, so structures shape
The consumption of glue is fixed, so magnetic shoe is pasted uniformity effect ratio and worked good in the prior art very around rotor core
It is many.So setting can make precision of the magnetic shoe in assembling higher, it is ensured that the sine degree of winding back emf waveform, improve motor
Performance, the rotor structure can also reduce torque pulsation.
Further, magnetic shoe size design keep it is constant, ensured by increasing the radius of rotor core extrados with
The gap of magnetic shoe coordinates, to paste glue slot milling allowance, prevents former rotor core structure, and magnetic shoe is inclined to one end when pasting
Situation.Magnetic shoe is set to λ with rotor core axial gap, and circle center distance is d, and rotor core radius is R1, central angle is θ1, magnetic shoe
Radius is R2, central angle is θ2, the value general recommendations of gap lambda is in the range of 0.2~0.4mm.The wherein size R of magnetic shoe2、
θ1, λ is, it is known that can determine that the size of rotor core according to below equation：
D=R1+λ-R2
Simultaneous above equation, the size that can obtain rotor core is as follows：
So set and enable magnetic shoe 20 well in the mounting groove of rotor core 10 so that carrying out magnetic shoe
Magnetic shoe 20 will not loosen during 20 stickups, be effectively improved the performance of the motor with the rotor core 10.Value
Obtain it is noted that " radius of arcwall face " referred to herein is the half of the curved line place circle of the inner peripheral surface of the cross section of magnetic shoe 20
Footpath, i.e., such as the R in Fig. 12It is shown.
Rotor structure in above-described embodiment can be also used for technical field of motors, i.e., according to it is of the present utility model another
Aspect is there is provided a kind of motor, including rotor structure, and rotor structure is the rotor structure in above-described embodiment.Specifically, this turn
Minor structure includes rotor core 10 and magnetic shoe 20.Mounting groove is offered along the axial direction of rotor core 10.Magnetic shoe 20 is arranged at
In mounting groove, cell wall and the magnetic shoe 20 of mounting groove are abutted against, the curved face of inner surface of magnetic shoe 20, and the radius of arcwall face, which is less than, to be turned
The radius of sub- iron core 10.
Further, the motor in above-described embodiment can be also used for Compressor Technology field, according to of the present utility model
On the other hand there is provided a kind of compressor, including rotor structure, rotor structure is the rotor structure in above-described embodiment.Should
Rotor structure includes rotor core 10 and magnetic shoe 20.Mounting groove is offered along the axial direction of rotor core 10.Magnetic shoe 20 is set
In in mounting groove, cell wall and the magnetic shoe 20 of mounting groove are abutted against, and the curved face of inner surface of magnetic shoe 20, the radius of arcwall face is less than
The radius of rotor core 10.
Magnetic shoe is used primarily in permanent magnet DC motor, different by magnet exciting coil generation magnetic potential source from electromagnetic motor, forever
Magneto is to produce constant magnetic potential source with permanent-magnet material.Permanent magnetic tile replaces electrical excitation to have lot of advantages, can make electric machine structure
Simply, easy to maintenance, lightweight, small volume, using reliable, copper consumption is few, copper loss is low, energy consumption is small etc..Magnetic shoe according to material with
Classification is different, and its technique also differs greatly.
Ferrite magnetic shoe is based on ferrite sintered body, and neodymium iron boron (NdFeB) magnetic tile is divided into sintering with bonding two classes.Ferrite sintered body magnetic
Watt production technology is broadly divided into the wet pressing opposite sex, the dry-pressing same sex, the dry-pressing opposite sex, and difference of its opposite sex and the same sex is to be press-molding
When whether have alignment magnetic field.Here the technique for mainly introducing the wet pressing opposite sex.Wet pressing technological process is：Raw material --- pre-burning --- is thick
--- --- --- --- sintering --- grinding --- is clear for pressing under magnetic field for secondary ball milling (wet-milling) for dispensing for crushing (ball milling)
Wash --- magnetize.Because shaping slurry contains moisture, easily turned in pressing under magnetic field particle so can obtain higher than the dry-pressing opposite sex
The degree of orientation, its performance is also just higher.
Sintered NdFeB magnetic shoe：Dispensing --- melting --- broken --- powder --- pressing under magnetic field --- isostatic pressed --- processed
--- processing such as wire cutting --- plating --- is magnetized with tempering for vacuum-sintering
The conventional mode that magnetizes of three kinds of magnetic shoe：
1st, magnetic shoe individually magnetizes, and is reloaded into casing, then assembles overall；
2nd, magnetic shoe loads casing (gluing) and magnetized again, then assembles overall；
3rd, magnetic shoe loads casing (gluing), refills and prepares finished product, and last entirety magnetizes.
The influence that different modes magnetize to magnetic shoe：The first mode that magnetizes magnetizes mode surface remanence than second and third kind
It is low by 10% or so, it is however generally that more reasonable using second of mode that magnetizes.First way magnetizes easily, and some factories use
Solenoid tunnel type magnetizes, highly efficient in productivity.
The second way magnetizes, and some factories use outer punching, and the interior punching of some uses, magnetic shoe or magnet ring need first to glue drying,
It is also very convenient in production.The third mode magnetizes, and has many small machines (being three grooves mostly) to make in this way, it is in cartridge rotor
When assembled very well due to no magnetic force, but be inconvenient to check whether magnetic substitutes the bad for the good.
The first mode of magnetizing belongs to open circuit and magnetized, and does not have external magnetic field magnetic circuit during due to magnetizing, does not constitute closed-loop path,
Magnetic shoe, which magnetizes, to be difficult to fill saturation, and the magnetic flux density to magnetic shoe has an impact, typically can be more relatively low than closed circuit magnetize.
Second of mode of magnetizing is the most frequently used, belongs to closed circuit and magnetizes, and the magnetic flux density after magnetizing is also highest, and
The waveform of air gap flux density can be adjusted by the shape of magnetized head, the requirement for meeting different motor performances is reached, but in electricity
Machine, it is necessary to assembled using special tooling, otherwise gouge rotor or may make magnetic shoe when assembling due to magnetic attraction
Produce magnetic broken.
The third mode of magnetizing falls within closed circuit magnetize (because rotor punching is good permeability magnetic material), the magnetic after magnetizing
Watt flux density magnitude is typically in the range of between the first and second, is noted：When being magnetized using complete machine, preferably by carbon brush with turning
Sub- winding is in open-circuit condition, and surface is otherwise contacted with commutator in carbon brush may produce spark phenomenon.
Specifically, compressor (compressor), is a kind of driven fluid that low-pressure gas is promoted to gases at high pressure
Machinery, is the heart of refrigeration system.It sucks the refrigerant gas of low-temp low-pressure from air intake duct, and band piston is operated by motor
After being compressed to it, the refrigerant gas of HTHP is discharged to blast pipe, power is provided for kind of refrigeration cycle, so as to realize pressure
The kind of refrigeration cycle of contracting → condensation (heat release) → expansion → evaporation (heat absorption).
Compressor point piston compressor, helical-lobe compressor, centrifugal compressor, linear compressor etc..Piston compressor is general
It is made up of housing, motor, cylinder body, piston, control device (starter and thermal protector) and cooling system.The type of cooling has oil
It is cold and air-cooled, three kinds of natural cooling.Linear compressor does not have axle, without cylinder body, sealing and radiator structure.
The compressor of general domestic refrigerator and air conditioner is that, using single-phase alternating current as power supply, their structural principle is basic
It is identical, but the refrigerant that both use is different.
Compressor is produced in a pipeline fashion.Cylinder body, piston are produced in engineering shop's (including casting) (to turn
Axle), valve block, connecting rod, bent axle, the parts such as end cap；Rotor, stator are assembled in motor workshop；Shell is produced in press workshop
Body etc..Then assembled in assembly shop, welded, cleaning, drying, most afterwards through examining qualified packaging to dispatch from the factory.Most of compressors
Manufactory does not produce starter and thermal protector, but as needed from market purchasing.Compressor, which represents enterprise, to be had：Mei Zhi, three
Water chestnut, Embraco etc..
Compressor is regarded as the heart of refrigeration system, and the specific term that can most show compressor characteristics is referred to as " steam
Pump ".The responsibility that compressor is actually undertaken is adherence pressure, and pressure of inspiration(Pi) state is brought up into discharge pressure state.
Compression ratio is a kind of technology representation of pressure differential, and its implication is the exhausted of high-pressure side absolute pressure divided by low-pressure side
To pressure.The calculating of compression ratio must use absolute pressure value.In order to avoid making compression ratio calculated value negative value occur, pressure is calculated
Than when must use absolute pressure, rather than meter pressure.Absolute pressure value is used just to make compression ratio calculated value on the occasion of so
It is just meaningful.
The compressor used in refrigeration and air conditioner industry has 5 big types：Reciprocating, screw, swinging, vortex and from
Core type, wherein reciprocating is using a kind of most compressors in small-sized and medium-sized business-use refrigrating system.Screw-compression owner
It is used for large commercial and industrial system.Rotary Compressor, scroll compressor are mainly used in family expenses and low capacity is commercial empty
Device is adjusted, centrifugal compressor is then widely used in the air-conditioning system of large buildings.
Various reciprocating compressors are general to classify according to compressor housing form and drive mechanism set-up mode.According to shell
Body form has open-type and closed accessible compressor to divide.It is closed to refer to that whole compressor is arranged at a housing
It is interior.
On startup, the electric current of motor can be higher than rated current 5-6 times, can not only influence the service life of motor for compressor
And the more electricity systems of consumption can leave certain surplus in design on choice of electrical machine, the speed of motor is fixed
Constant, but in actual use, to be run sometimes with relatively low or higher speed, therefore carry out Frequency Conversion Modification right and wrong
Often it is necessary.Frequency converter can realize soft starter for motor, the purpose of energy-saving speed regulating is reached by changing equipment input voltage frequency,
And the defencive functions such as excessively stream, overvoltage, overload can be provided to equipment.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not have the portion being described in detail in some embodiment
Point, it may refer to the associated description of other embodiment.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (10)
1. a kind of rotor structure, it is characterised in that including：
Rotor core (10), mounting groove is offered along the axial direction of the rotor core (10)；
Magnetic shoe (20), the magnetic shoe (20) is arranged in the mounting groove, the cell wall of the mounting groove and the magnetic shoe (20) phase
Abut, the curved face of inner surface of the magnetic shoe (20), the radius of the arcwall face is less than the radius of the rotor core (10).
2. rotor structure according to claim 1, it is characterised in that the two ends of the close cell wall of the arcwall face are equal
It is in contact with the bottom land of the mounting groove, and there is gap between the middle part of the arcwall face and the middle part of the bottom land, it is described
Gap is used to inject bonding agent so that the magnetic shoe (20) is fixed with the rotor core (10).
3. rotor structure according to claim 2, it is characterised in that the maximum in the gap is λ, wherein, 0.2mm≤
λ≤0.4mm。
4. rotor structure according to claim 1, it is characterised in that the radius of the rotor core (10) is R1, the R1
Obtained by below equation：
Wherein,
The R2For the radius of the arcwall face；
The λ is the width of the maximum in gap；
The θ2For the corresponding central angle of the magnetic shoe.
5. rotor structure according to claim 4, it is characterised in that the central angle of the mounting groove is θ1, the θ1Pass through
Below equation is obtained：
6. rotor structure according to claim 1, it is characterised in that the mounting groove is multiple, multiple mounting grooves
Set along the outer peripheral face of the rotor core (10), the magnetic shoe (20) is provided with each mounting groove.
7. rotor structure according to claim 1, it is characterised in that multiple mounting grooves are along the rotor core (10)
Be arranged circumferentially.
8. rotor structure according to claim 1, it is characterised in that the magnetic shoe (20) protrudes from the mounting groove and set
Put.
9. a kind of motor, including rotor structure, it is characterised in that the rotor structure is any one of claim 1 to 8
Rotor structure.
10. a kind of compressor, including rotor structure, it is characterised in that the rotor structure is any one of claim 1 to 8
Described rotor structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621236763.7U CN206370734U (en) | 2016-11-18 | 2016-11-18 | Rotor structure, motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621236763.7U CN206370734U (en) | 2016-11-18 | 2016-11-18 | Rotor structure, motor and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206370734U true CN206370734U (en) | 2017-08-01 |
Family
ID=59389983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621236763.7U Withdrawn - After Issue CN206370734U (en) | 2016-11-18 | 2016-11-18 | Rotor structure, motor and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206370734U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505764A (en) * | 2016-11-18 | 2017-03-15 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure, motor and compressor |
| CN108417377A (en) * | 2018-02-07 | 2018-08-17 | 北京航空航天大学 | A kind of fire resistant permanent magnet precondition processing method |
-
2016
- 2016-11-18 CN CN201621236763.7U patent/CN206370734U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505764A (en) * | 2016-11-18 | 2017-03-15 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure, motor and compressor |
| CN106505764B (en) * | 2016-11-18 | 2023-07-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure, motor and compressor |
| CN108417377A (en) * | 2018-02-07 | 2018-08-17 | 北京航空航天大学 | A kind of fire resistant permanent magnet precondition processing method |
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