CN207124497U - Rotor sheath, rotor and high-speed permanent magnet motor - Google Patents
Rotor sheath, rotor and high-speed permanent magnet motor Download PDFInfo
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- CN207124497U CN207124497U CN201721009945.5U CN201721009945U CN207124497U CN 207124497 U CN207124497 U CN 207124497U CN 201721009945 U CN201721009945 U CN 201721009945U CN 207124497 U CN207124497 U CN 207124497U
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Abstract
The utility model provides a kind of rotor sheath, rotor and high-speed permanent magnet motor, and the rotor sheath includes the cylindrical body being process by alloy material, and the cylindrical body has the first axially arranged center through hole；The cylindrical body includes permanent magnet construction section and two rotating shaft construction sections, the permanent magnet construction section and two rotating shaft construction sections are respectively along the axially arranged of the cylindrical body, and described two rotating shaft construction sections are located at the both ends of the permanent magnet construction section respectively；The outer wall of the cylindrical body has opening, and the axial length of the opening matches with the axial length of permanent magnet construction section.The utility model can reduce the eddy-current loss of rotor and the wind moussing loss of rotor surface by reducing rotor sheath in the thickness of permanent magnet construction section and being maintained at the thickness of rotating shaft construction section while rotor stiffness of sheath is kept.
Description
Technical field
Machine field is the utility model is related to, more specifically to a kind of rotor sheath, rotor and high speed
Magneto.
Background technology
High-speed permanent magnet motor has few rotating speed height, small volume, power density height, materials being fabricated, efficiency high, structure more simple
It is single, do not need the features such as traditional gear, noise are small, rotary inertia is small, dynamic response is fast, meet current energy-saving and emission-reduction,
Green economy development requirement, it is one of focus that electric, mechanical field is studied in the world.At present, high-speed permanent magnet motor
There is important application in fields such as centrifugal compressor, hybrid vehicle, the driving of gas turbine, Aero-Space.
Because high-speed permanent magnet motor rotating speed is very high, linear resonance surface velocity up to more than 200m/s, therefore to the intensity of rotor and
Rigidity has higher requirement.But the tensile strength of permanent magnet material in itself is relatively low, under the circumference of the high-speed rotation, to protect forever
Magnet, generally require and protected to it plus sheath.The sheath of the alloy material of generally use at present, the firm of rotor can be improved
Spend the intensity that and can improves rotor.
But during using pure alloy sleeve, because alloy sleeve thickness is larger, therefore the eddy-current loss on the alloy sleeve
It is very high, so as to cause rotor temperature rise too high, the irreversible demagnetization of permanent magnet may be caused.
Utility model content
The technical problems to be solved in the utility model is, for the alloy sleeve whirlpool of the rotor of above-mentioned high-speed permanent magnet motor
The problem of stream is lost height, permanent magnet may be caused to demagnetize, there is provided a kind of new rotor sheath, rotor and high-speed permanent magnetic
Motor.
The technical scheme that the utility model solves above-mentioned technical problem is to provide a kind of rotor sheath, including by closing
The cylindrical body that golden material is process, and the cylindrical body has the first axially arranged center through hole；The tubular master
Body includes permanent magnet construction section and two rotating shaft construction sections, and the permanent magnet construction section and two rotating shaft construction sections are described in
Cylindrical body it is axially arranged, and described two rotating shaft construction sections respectively be located at the permanent magnet construction section both ends；The cylinder
The outer wall of shape main body has opening, and the axial length of the opening matches with the axial length of permanent magnet construction section.
In rotor sheath described in the utility model, the rotor sheath also includes internal layer protective case, and
The internal layer protective case is tubular and has the second center through hole；The axial length of the internal layer protective case and permanent magnet construction section
Axial length matching, and the internal layer protective case is assembled to the first center through hole of the cylindrical body with interference fit
Permanent magnet construction section.
In rotor sheath described in the utility model, the rotor sheath also includes being processed by conductive material
The housing formed, and the housing is tubular and has the 3rd center through hole；The axial length and permanent magnetism of the housing
The axial length matching of body construction section, and the housing is assembled to interference fit in the second of the internal layer protective case
Entreat in through hole.
The utility model also provides a kind of rotor, including permanent magnet and rotor sheath as described above, institute
State permanent magnet to be assembled in the rotor sheath, and the installation site of the permanent magnet corresponds to the cylindrical body forever
Magnet construction section.
In rotor described in the utility model, the permanent magnet includes solid cylindrical body, and the circle
Columnar body is assembled in rotor sheath with interference fit.
In rotor described in the utility model, the rotor includes rotor core, and the permanent magnet bag
Multiple tile monomers are included, the multiple tile monomer is affixed on the periphery of the rotor core respectively；It is described to post tile
The rotor core of monomer is assembled in rotor sheath with interference fit.
The utility model also provides a kind of high-speed permanent magnet motor, including stator and rotor as described above.
In high-speed permanent magnet motor described in the utility model, the depth of the opening of the cylindrical body outer wall is with default
Rotor eddy-current loss value reduces and increased.
In high-speed permanent magnet motor described in the utility model, the default electricity of depth of the opening of the cylindrical body outer wall
Machine rotor first critical speed reduces and increased.
Rotor sheath, rotor and high-speed permanent magnet motor of the present utility model have following technique effect：Pass through
Rotor sheath is reduced in the thickness of permanent magnet construction section and is maintained at the thickness of rotating shaft construction section, rotor can kept
While stiffness of sheath, the eddy-current loss of rotor and the wind moussing loss of rotor surface are reduced.Also, the utility model leads to
Cross increase internal layer protective case and form composite construction, the rigidity and intensity of rotor can be effectively improved.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model rotor sheath embodiment；
Fig. 2 is the schematic diagram of the utility model rotor embodiment；
Fig. 3 is the radial section schematic diagram of rotor in Fig. 2；
Fig. 4 is the schematic diagram of another embodiment of the utility model rotor；
Fig. 5 is the radial section schematic diagram of rotor in Fig. 4；
Fig. 6 is schematic diagram of the depth with rotor eddy current loss relation of rotor sheath upper shed；
Fig. 7 is schematic diagram of the depth with first critical speed relation of rotor sheath upper shed.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
As shown in figure 1, being the schematic diagram of the utility model rotor sheath embodiment, the rotor sheath can be used for
The rotor of high-speed permanent magnet motor is protected, so that the rotor of high-speed permanent magnet motor meets the requirement of rigidity and intensity.This
Rotor sheath in embodiment includes cylindrical body 1, and the cylindrical body 1 is by alloy material (such as nickel-base alloy, titanium alloy
Deng) be process, and the cylindrical body 1 has the first axially arranged center through hole.Above-mentioned cylindrical body 1 is pacified including permanent magnet
Fill section 12 and two rotating shaft construction sections 11,13, above-mentioned permanent magnet construction section 12 and two rotating shaft construction sections 11,13 edge respectively
Cylindrical body 1 it is axially arranged, and two rotating shaft construction sections 11,13 respectively be located at permanent magnet construction section 12 both ends.
Above-mentioned permanent magnet construction section 12 is integrally formed with two rotating shaft construction sections 11,13, and permanent magnet construction section 12 is interior
The diameter of wall is identical with the diameter of the inwall of two rotating shaft construction sections 11,13, i.e. the diameter of the first center through hole everywhere is identical, from
And the permanent magnet of rotor directly can be inserted into permanent magnet construction section 12 via rotating shaft construction section 11 or 13.Two rotating shaft installations
Section 11,13 is placed in rotating shaft, and the axial length of two rotating shaft construction sections 11,13 is identical.
In the present embodiment, the outer wall of above-mentioned permanent magnet construction section 12 is smooth (without projection or groove structure), and this is forever
The diameter of the outer wall of magnet construction section 12 is less than the diameter of the outer wall of rotating shaft construction section 11,13, so as in the outer wall of cylindrical body 1
A recessed opening is formed, and the axial length of the opening is equal to the axial length of permanent magnet construction section 12.
By the way that thickness of the cylindrical body 1 in permanent magnet construction section 12 is reduced, and due to only in permanent magnet construction section 12
Reduce thickness, compared to the thickness for reducing whole cylindrical body 1, the influence to rotor rigidity is much smaller, so as to
While ensureing the rigidity and intensity of rotor, reduce eddy-current loss and high-speed permanent magnet motor gas in rotor sheath
The wind moussing loss of rotor surface at gap.
As shown in Fig. 2 above-mentioned rotor sheath may also include internal layer protective case 2, and the internal layer protective case 2 be tubular simultaneously
With the second center through hole.The axial direction of the axial length of above-mentioned internal layer protective case 2 and the permanent magnet construction section 12 of cylindrical body 1 is long
Degree matching, and internal layer protective case 2 is assembled to the permanent magnet construction section of the first center through hole of cylindrical body 1 with interference fit
12。
Internal layer protective case 2 can specifically use alloy material (such as nickel-base alloy, titanium alloy etc.) or carbon fibre composite
(such as T800 carbon fibre composites etc.).No matter internal layer protective case 2 meets material using alloy material or carbon fiber, the electricity
Loss in machine rotor sheath is concentrated mainly in the cylindrical body 1 of outer layer.Two-layer composite is used in rotor sheath
When, the cylindrical body 1 of outer layer can provide the rigidity and intensity of rotor, and internal layer protective case 2 can supplement rotor strength.
Above-mentioned rotor sheath may also include the housing 3 being process by conductive material (such as copper), and housing 3
For tubular and there is the 3rd center through hole；The axial length of housing 3 matches with the axial length of permanent magnet construction section 12, and shields
Set 3 is covered to be assembled in the second center through hole of internal layer protective case 2 with interference fit.Housing 3 can reduce rotor
Eddy-current loss, improve electric efficiency.
As shown in Figure 2,3, it is the schematic diagram of the utility model rotor embodiment.The rotor include permanent magnet with
And rotor sheath as described above, wherein permanent magnet is assembled in above-mentioned rotor sheath, and the dress of the permanent magnet
Correspond to the permanent magnet construction section 12 of cylindrical body 1 with position.
Above-mentioned permanent magnet can use solid construction, i.e., including solid cylindrical body 4, and cylindrical body 4 is with interference
Fit system is assembled in rotor sheath.Specifically, can be first by cylindrical body 4 with interference fit state to shielding
Housing 3 equipped with cylindrical body 4, is then assembled in internal layer protective case 2 by set 3 with interference fit, finally will dress
The internal layer protective case 2 for having cylindrical body 4 and housing 3 is assembled in the cylindrical body 1 of outer layer with interference fit.
As shown in Figure 4,5, the permanent magnet of rotor of the present utility model can also use multiple splits of tile monomer 5
Mode, i.e. rotor include rotor core 6, and permanent magnet includes multiple tile monomers 5, and multiple tile monomers 5 paste respectively
In the periphery of rotor core 6；The rotor core 6 for posting tile monomer 5 is assembled to rotor sheath with interference fit
Interior (assembling process is identical with Fig. 2,3 embodiment).
The utility model also provides a kind of high-speed permanent magnet motor, and the high-speed permanent magnet motor is including stator and as described above
Rotor.
In above-mentioned high-speed permanent magnet motor, the depth of the opening in cylindrical body 1 (the i.e. outer wall of permanent magnet construction section 12
The difference of the diameter of the outer wall of diameter and rotating shaft construction section 11,13), it should follow in the case where ensureing critical speed, as far as possible
The principle for reducing eddy-current loss is chosen.
In above-mentioned high-speed permanent magnet motor, the diameter of the outer wall of permanent magnet construction section 12 is outer with rotating shaft construction section 11,13
The difference of the diameter of wall reduces and increased with default rotor eddy-current loss value.Specifically as shown in fig. 6, transverse axis is cylindrical body
Opening on 1 depth (i.e. the diameter of the outer wall of the diameter of the outer wall of permanent magnet construction section 12 and rotating shaft construction section 11,13 it
Difference), unit mm；The longitudinal axis is rotor eddy current loss, unit W.
Also, the difference of the diameter of the outer wall of the diameter of the outer wall of permanent magnet construction section and the rotating shaft construction section is with default
Rotor first critical speed reduces and increased.It is specific as shown in fig. 7, transverse axis be the depth of the opening in cylindrical body 1 (i.e.
The difference of the diameter of the diameter of the outer wall of permanent magnet construction section 12 and the outer wall of rotating shaft construction section 11,13), unit mm；The longitudinal axis is
Rotor first critical speed, unit are rpm (rev/min).
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should
It is defined by scope of the claims.
Claims (9)
1. a kind of rotor sheath, including the cylindrical body being process by alloy material, and the cylindrical body has axle
To the first center through hole of setting；It is characterized in that：The cylindrical body includes permanent magnet construction section and two rotating shaft installations
Section, the permanent magnet construction section and two rotating shaft construction sections are and described two respectively along the axially arranged of the cylindrical body
Rotating shaft construction section is located at the both ends of the permanent magnet construction section respectively；The outer wall of the cylindrical body has opening, and described opens
The axial length of mouth matches with the axial length of permanent magnet construction section.
2. rotor sheath according to claim 1, it is characterised in that：The rotor sheath, which also includes internal layer, to be protected
Sheath, and the internal layer protective case is tubular and has the second center through hole；The axial length and permanent magnetism of the internal layer protective case
The axial length matching of body construction section, and the internal layer protective case is assembled to the first of the cylindrical body with interference fit
The permanent magnet construction section of center through hole.
3. rotor sheath according to claim 2, it is characterised in that：The rotor sheath also includes by conduction
The housing that material is process, and the housing is tubular and has the 3rd center through hole；The axial direction of the housing is long
Degree matches with the axial length of permanent magnet construction section, and the housing is assembled to the internal layer protective case with interference fit
The second center through hole in.
A kind of 4. rotor, it is characterised in that：Motor including permanent magnet and as any one of claim 1-3 turns
Sub- sheath, the permanent magnet are assembled in the rotor sheath, and the installation site of the permanent magnet corresponds to the cylinder
The permanent magnet construction section of shape main body.
5. rotor according to claim 4, it is characterised in that：The permanent magnet includes solid cylindrical body,
And the cylindrical body is assembled in rotor sheath with interference fit.
6. rotor according to claim 4, it is characterised in that：The rotor includes rotor core, and described
Permanent magnet includes multiple tile monomers, and the multiple tile monomer is affixed on the periphery of the rotor core respectively；The patch
The rotor core for having tile monomer is assembled in rotor sheath with interference fit.
A kind of 7. high-speed permanent magnet motor, it is characterised in that：Including stator and rotor as claimed in claim 4.
8. high-speed permanent magnet motor according to claim 7, it is characterised in that：The depth of the opening of the cylindrical body outer wall
Reduce with default rotor eddy-current loss value and increase.
9. high-speed permanent magnet motor according to claim 7, it is characterised in that：The depth of the opening of the cylindrical body outer wall
Reduce with default rotor first critical speed and increase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721009945.5U CN207124497U (en) | 2017-08-14 | 2017-08-14 | Rotor sheath, rotor and high-speed permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721009945.5U CN207124497U (en) | 2017-08-14 | 2017-08-14 | Rotor sheath, rotor and high-speed permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207124497U true CN207124497U (en) | 2018-03-20 |
Family
ID=61610625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721009945.5U Active CN207124497U (en) | 2017-08-14 | 2017-08-14 | Rotor sheath, rotor and high-speed permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207124497U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113364180A (en) * | 2021-06-21 | 2021-09-07 | 珠海格力电器股份有限公司 | Rotor structure and motor with same |
| CN113541357A (en) * | 2021-07-26 | 2021-10-22 | 珠海格力电器股份有限公司 | Motor rotor sheath, rotor structure and motor comprising same |
| CN116362148A (en) * | 2023-02-27 | 2023-06-30 | 湖南大学 | Method for calculating eddy current loss of rotor of high-speed permanent magnet motor |
-
2017
- 2017-08-14 CN CN201721009945.5U patent/CN207124497U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113364180A (en) * | 2021-06-21 | 2021-09-07 | 珠海格力电器股份有限公司 | Rotor structure and motor with same |
| CN113364180B (en) * | 2021-06-21 | 2022-03-08 | 珠海格力电器股份有限公司 | Rotor structure and motor with same |
| CN113541357A (en) * | 2021-07-26 | 2021-10-22 | 珠海格力电器股份有限公司 | Motor rotor sheath, rotor structure and motor comprising same |
| CN113541357B (en) * | 2021-07-26 | 2022-09-27 | 珠海格力电器股份有限公司 | Motor rotor sheath, rotor structure and motor comprising same |
| CN116362148A (en) * | 2023-02-27 | 2023-06-30 | 湖南大学 | Method for calculating eddy current loss of rotor of high-speed permanent magnet motor |
| CN116362148B (en) * | 2023-02-27 | 2023-09-05 | 湖南大学 | Method for calculating eddy current loss of rotor of high-speed permanent magnet motor |
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