CN109962595A - Ultrahigh speed magneto - Google Patents
Ultrahigh speed magneto Download PDFInfo
- Publication number
- CN109962595A CN109962595A CN201910213511.4A CN201910213511A CN109962595A CN 109962595 A CN109962595 A CN 109962595A CN 201910213511 A CN201910213511 A CN 201910213511A CN 109962595 A CN109962595 A CN 109962595A
- Authority
- CN
- China
- Prior art keywords
- protective case
- cylindrical roller
- mandrel
- ultrahigh speed
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 30
- 239000007787 solid Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 4
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 229910000816 inconels 718 Inorganic materials 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000004047 hole gas Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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
- H02K1/2713—Inner rotors the magnetisation axis of the magnets being axial, e.g. claw-pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1737—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention discloses a kind of ultrahigh speed magnetoes; including casing, the protective case being arranged in casing, mandrel, Biserial cylindrical roller bearing; solid permanent magnet is provided in the protective case; protective case and mandrel are overall structure; Biserial cylindrical roller bearing is assemblied on mandrel; it is characterized by: the casing inner wall is provided with inwardly protruding structure, the outer wall of the Biserial cylindrical roller bearing is mounted on the inner wall at the inwardly protruding position of the casing.The present invention is directed to the defect of conventional rotor configuration, provides that a kind of rotor diameter is small, concentric degree is good, running accuracy is high, power density is high, the good ultrahigh speed magneto of high-speed operation performance.
Description
Technical field
The present invention relates to electric drive technology fields, more particularly, to a kind of ultrahigh speed magneto.
Background technique
High-speed motor has the characteristics that power density is high, rotary inertia is small, can directly drive load, as high-speed drive
The core component of system, structure, efficiency, reliability, precision of motor etc. determine the comprehensive performance of high-speed drive system.Tradition
High speed rotor of motor structure mainly have a surface-mount type and two kinds of three-stage, it is as depicted in figs. 1 and 2 respectively.Surface-mount type rotor
Structure is made of permanent magnet, mandrel and protective case.Three-stage motor rotor construction is by permanent magnet, protective case and two end axis groups
At two end axis and permanent magnet are linked together by the interference fit of protective case.However two kinds of rotors all have its design feature
The drawbacks of bringing.
The main drawback of surface-mount type structure has:
1. in order to generate identical magnetic flux, relative to the rotor using solid permanent-magnet structure, surface-mounted rotor structure
Rotor diameter is bigger.The increase of rotor diameter will make the problems such as high speed rotor of motor intensity, windmill loss, temperature rise more prominent
Out；
2. temperature of rotor can be caused to rise by windmill loss, rotor eddy current loss.However, being commonly used for the material of mandrel, such as
Titanium alloy, Inconel718,40CrNiMoA etc., thermal expansion coefficient are all larger than common permanent magnet material, such as SmCo and neodymium iron
Boron.Therefore when temperature increases, surface-mount type structure permanent magnet will bear to cause additional tensile stress since mandrel expansion is too fast, this will make
It is more difficult to the protection of permanent magnet.
The main drawback of three stage structure has:
1. two sides mandrel portion material thermal expansion coefficient is usually above intermediate permanent magnetism isolator CTE, by windmill loss, turn
When sub- eddy-current loss causes temperature to increase, two sides mandrel material expands faster relative to intermediate permanent magnet material, this will cause to protect
Set declines permanent magnet protective capability；
2. in three stage structure, the connection of two sides mandrel and intermediate permanent magnet needs to guarantee very high concentricity, to component
Processing, matching requirements are high, considerably increase processing, assembly difficulty.If three-stage structure assembly precision is not high, electricity will seriously affect
Performance of the machine under high-speed cruising.
Summary of the invention
Goal of the invention: the technical problem to be solved in the present invention is to provide a kind of ultrahigh speed magnetoes, for conventional rotors
The defect of structure, provides that a kind of rotor diameter is small, concentric degree is good, running accuracy is high, power density is high, and high-speed operation performance is good
Ultrahigh speed magneto.
Technical solution: ultrahigh speed magneto of the present invention, including casing, the protective case being arranged in casing, core
Axis, Biserial cylindrical roller bearing, solid permanent magnet is provided in the protective case, and protective case and mandrel are overall structure, biserial
Cylinder roller bearing is assemblied on mandrel, and the casing inner wall is provided with inwardly protruding structure, the Biserial cylindrical roller bearing
Outer wall be mounted on the inner wall at the inwardly protruding position of the casing.
Further, the Biserial cylindrical roller bearing includes outer ring, inner ring, cylindrical roller and retainer, it is described in
Circle is coupled with mandrel, and the outer ring is by interference fit or is sticky on casing inner wall, and the cylindrical roller is mounted on
Between outer ring and inner ring, cylindrical roller side is equipped with retainer.
Further, the ultrahigh speed magneto is the axially symmetric knot centered on Biserial cylindrical roller bearing
Structure, the protective case two sides are equipped with the sealing axis as mechanical output mouth.
For convenience by the discharge of blind hole gas in solid permanent magnet assembling process, and be conducive to rotor heat dissipation, it is described
Several axial vent holes are provided on the inside of protective case.
Further, the protective case is hollow cylinder, is interference fitted with the solid permanent magnet.
Further, the protective case and mandrel are overall structure, and material uses inconel 718 or titanium alloy.
Further, the stator in the motor uses slotless configuration, and the armature winding in the motor is in the stator
Medial and lateral carry out ring-wound.
The utility model has the advantages that the present invention has following technical effect that
1. use solid magnet structure, reduce rotor diameter, thus reduce motor high speed rotation bring rotor strength,
The problems such as windmill is lost.Solid permanent magnet is directly interference fitted with sheath, expanded without mandrel when temperature of rotor increases
Rotor stress caused by fast increases problem；
2. the motor is center symmetrical structure, there is dual permanent-magnet, double armature winding, double-mechanical output port, operation height
Effect, balance, stability are good, and output power is high；
3. protective case-mandrel overall structure is avoided through institute's band after the structures Multi-nesting such as permanent magnet, protective case, mandrel
The problem of assembly precision come is poor, swelling stress disperses, greatly reduces by processing, assembling bring tolerance, ensure that rotation
Precision.Bearing outer ring directly has assembly securely and the characteristic of perfect heat-dissipating with casing with one entirety of synthesis, improves product
Service life；The design of integral rotor structure is expanded so that reduce product size in the case where output efficiency on an equal basis
Application range.
Detailed description of the invention
Fig. 1 is existing surface-mount type high-speed motor structural schematic diagram；
Fig. 2 is existing three-stage high-speed motor structural schematic diagram；
Fig. 3 is the structural schematic diagram of ultrahigh speed magneto of the invention；
Fig. 4 is protective case and mandrel overall structure sectional view of the present invention.
Specific embodiment
The ultrahigh speed magneto of the present embodiment is double as shown in figure 3, include the inwardly protruded casing 7 of intermediate two sides inner wall
Line column roller bearing is directly installed on the inner wall at the inwardly protruding position of casing 7.The Biserial cylindrical roller bearing is using double
Arrange steel material cylinder rolling element, including outer ring 10, inner ring 12, cylindrical roller 11, retainer 8.The cylindrical roller is in parallel
Column, can there is several, can rotate among outer ring 10 and inner ring 12 around mandrel 13.11 are equipped between the cylindrical roller
Retainer 8 is filled with high speed grease in the retainer 8.The bearing outer ring 10 and casing 7 of the Biserial cylindrical roller bearing
The inner wall at inwardly protruding position is coupled, and outer ring 10 can be by being interference fitted or being sticky on the casing 7.Ultrahigh speed
Magneto is axially symmetric centered on Biserial cylindrical roller bearing.The two sides that protective case 4 is located at mandrel 13 are symmetrical arranged, with core
Axis 13 is structure as a whole, and the material of integral structure uses non-magnetic, the material of high-tensile, such as: inconel 718, titanium close
Any one of gold.Biserial cylindrical roller bearing is assemblied in the outside of mandrel 13, and mandrel 13 is coupled with inner ring 12.With biserial
Centered on cylinder roller bearing, ultrahigh speed magneto further includes two sets of symmetric solid permanent magnets 5, two sets of symmetrical stators 2, and two sets
Symmetrical armature winding 3, two sets of symmetrical sealing axis 1.The inside of protective case 4 is arranged in solid permanent magnet 5, and the two carries out interference and matches
It closes.Under preferable case, solid permanent magnet 5 is cylinder, and protective case 4 is the hollow cylinder structure being adapted with solid permanent magnet 5.
4 outside of two sides protective case and sealing 1 interference fit of axis, and pass through end cap 6, the mechanical output as motor two sides
Mouthful.Stator 2 is arranged in the inner wall of casing 7, and stator 2 can be that have slot stator may be non-groove stator, when using there is slot stator,
Armature winding 3 is wound in 2 slot of stator, when using non-groove stator, armature winding 32 medial and lateral of stator into
Row ring-wound.Armature winding 3 is located at the periphery of solid permanent magnet 5.
As shown in figure 4, protective case 4 opens up several axial vent holes 9 close to the inside of mandrel 13, it is traditionally arranged to be 3 to 5
A, for blind hole gas in solid 5 assembling process of permanent magnet discharge.
In the technical solution of the present invention, using cylindrical, massive permanent magnet, protective case, mandrel are integrated into integral knot
Structure, mandrel assemble Biserial cylindrical roller bearing, and bearing outer ring is directly coupled with casing, avoid through permanent magnet, protection
The problem of brought assembly precision is poor after set, mandrel, bearing Multi-nesting, swelling stress disperses, to promote motor high speed
The performance of operating.Using Biserial cylindrical roller bearing and symmetric rotor Standard, there is compact-sized, rigid big, carrying energy
The big advantage of power.Bearing outer ring is directly contacted with casing, and contact area is big, substantially increases heat dissipation performance, improves motor
Service life.The motor is center symmetrical structure, has dual permanent-magnet, double armature winding, double-mechanical output port, operation height
Effect, balance, stability are good, and output power is high.
Claims (7)
1. a kind of ultrahigh speed magneto, including casing (7), the protective case (4), the mandrel (13), biserial that are arranged in casing (7)
Cylinder roller bearing is provided with solid permanent magnet (5) in the protective case (4), and protective case (4) and mandrel (13) are whole knot
Structure, Biserial cylindrical roller bearing are assemblied on mandrel (13), it is characterised in that: casing (7) inner wall is provided with inwardly protruding
Structure, the outer wall of the Biserial cylindrical roller bearing are mounted on the inner wall at the casing (7) inwardly protruding position.
2. ultrahigh speed magneto according to claim 1, it is characterised in that: the Biserial cylindrical roller bearing includes
Outer ring (10), inner ring (12), cylindrical roller (11) and retainer (8), the inner ring (12) is coupled with mandrel (13), described
Outer ring (10) by interference fit or be sticky on casing (7) inner wall, the cylindrical roller (11) be mounted on outer ring (10) and
Between inner ring (12), cylindrical roller (11) side is equipped with retainer (8).
3. according to claim 1 with 2 described in any item ultrahigh speed magnetoes, it is characterised in that: the ultrahigh speed permanent magnetism
Motor is the axially symmetric structure centered on Biserial cylindrical roller bearing, and protective case (4) two sides are equipped with as machinery
The sealing axis (1) of output port.
4. ultrahigh speed magneto according to claim 3, it is characterised in that: the inside of the protective case (4) is arranged
There are several axial vent holes (9).
5. ultrahigh speed magneto according to claim 3, it is characterised in that: the protective case (4) is hollow cylinder
Shape is interference fitted with the solid permanent magnet (5).
6. ultrahigh speed magneto according to claim 3, it is characterised in that: the protective case (4) is with mandrel (13)
Overall structure, overall structure material use inconel 718 or titanium alloy.
7. ultrahigh speed magneto according to claim 3, it is characterised in that: the stator (2) in the motor uses nothing
Slot structure, the armature winding (3) in the motor carry out ring-wound in the stator medial and lateral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910213511.4A CN109962595A (en) | 2019-03-20 | 2019-03-20 | Ultrahigh speed magneto |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910213511.4A CN109962595A (en) | 2019-03-20 | 2019-03-20 | Ultrahigh speed magneto |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109962595A true CN109962595A (en) | 2019-07-02 |
Family
ID=67024552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910213511.4A Pending CN109962595A (en) | 2019-03-20 | 2019-03-20 | Ultrahigh speed magneto |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109962595A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328547A (en) * | 2021-05-12 | 2021-08-31 | 南京航空航天大学 | Ultra-high-speed micro permanent magnet motor |
| CN114042946A (en) * | 2021-11-26 | 2022-02-15 | 南方科技大学 | Mandrel of ultrahigh-speed air static pressure spindle |
| CN114094736A (en) * | 2021-11-15 | 2022-02-25 | 珠海格力电器股份有限公司 | Motor rotor and manufacturing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62119182U (en) * | 1985-09-07 | 1987-07-29 | ||
| CN105471137A (en) * | 2016-01-11 | 2016-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotating shaft structure of permanent magnet motor and assembling method of the rotating shaft structure |
| CN107086705A (en) * | 2017-05-27 | 2017-08-22 | 杭州驰创机械有限公司 | A kind of brushless, permanently high-speed electric expreess locomotive of use integral bearing |
| CN208479438U (en) * | 2018-07-20 | 2019-02-05 | 湖南易特机电科技有限公司 | The latent oil of underground cartridge type operation directly drives the ultra-fine long high performance permanent magnetic synchronous motor of pump |
| CN209731028U (en) * | 2019-03-20 | 2019-12-03 | 南京航空航天大学 | Ultrahigh speed magneto |
-
2019
- 2019-03-20 CN CN201910213511.4A patent/CN109962595A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62119182U (en) * | 1985-09-07 | 1987-07-29 | ||
| CN105471137A (en) * | 2016-01-11 | 2016-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotating shaft structure of permanent magnet motor and assembling method of the rotating shaft structure |
| CN107086705A (en) * | 2017-05-27 | 2017-08-22 | 杭州驰创机械有限公司 | A kind of brushless, permanently high-speed electric expreess locomotive of use integral bearing |
| CN208479438U (en) * | 2018-07-20 | 2019-02-05 | 湖南易特机电科技有限公司 | The latent oil of underground cartridge type operation directly drives the ultra-fine long high performance permanent magnetic synchronous motor of pump |
| CN209731028U (en) * | 2019-03-20 | 2019-12-03 | 南京航空航天大学 | Ultrahigh speed magneto |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328547A (en) * | 2021-05-12 | 2021-08-31 | 南京航空航天大学 | Ultra-high-speed micro permanent magnet motor |
| CN114094736A (en) * | 2021-11-15 | 2022-02-25 | 珠海格力电器股份有限公司 | Motor rotor and manufacturing method thereof |
| CN114094736B (en) * | 2021-11-15 | 2023-02-17 | 珠海格力电器股份有限公司 | Motor rotor and manufacturing method thereof |
| CN114042946A (en) * | 2021-11-26 | 2022-02-15 | 南方科技大学 | Mandrel of ultrahigh-speed air static pressure spindle |
| CN114042946B (en) * | 2021-11-26 | 2022-09-27 | 南方科技大学 | Dabber of hypervelocity air static electricity main shaft |
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