CN205956219U - Permanent magnet rotor's radial magnetic bearing of mixture - Google Patents
Permanent magnet rotor's radial magnetic bearing of mixture Download PDFInfo
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- CN205956219U CN205956219U CN201620689610.1U CN201620689610U CN205956219U CN 205956219 U CN205956219 U CN 205956219U CN 201620689610 U CN201620689610 U CN 201620689610U CN 205956219 U CN205956219 U CN 205956219U
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- permanent magnet
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- bearing
- journal bearing
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Abstract
The utility model relates to a permanent magnet rotor's radial magnetic bearing of mixture changes into the rotor including the permanent magnet with the rotor, and magnetic suspension journal bearing stator core is the electro -magnet, sets up solenoid on this electro -magnet. A set of journal bearing is by more than 4 and be that an even number journal bearing stator is constituteed to along circumference evenly distributed. Coil expert on every journal bearing has the direct current of specific direction. The permanent magnet adopts axial magnetization, and a plurality of electro -magnet that distribute along the rotor circumference are together constituteed with the solenoid who sets up above that respectively to magnetic suspension journal bearing iron core, and its effect produces the electromagnetic force through the switch on, and the antitrochanter plays the effect that attracts or exclude, makes the rotor be in balanced state. The direction of the magnetic poles of electro -magnet is confirmed by the the direction of current flow who sets up among the solenoid above that respectively. For traditional magnetic bearing, the utility model discloses thereby the volume that can reduce single electromagnetic core reduces whole magnetic suspension bearing's volume, has better system stability.
Description
Technical field
This utility model is related to a kind of active magnetic bearings, particularly a kind of hybrid radial magnetic bearing containing permanent magnet.
Background technology
The design of existing active magnetic bearings, its rotor is the permeability magnetic materials such as stalloy, by bearing stator pass through electric magnet or
Permanent magnet material produces magnetic field, rotor is produced with captivation thus playing a supporting role.In rotor suspension, rotor is subject on straight line
Identical to a pair of size, in opposite direction electromagnetic attraction, and it is in a kind of poised state.Due between the size in magnetic field and electromagnetism
Gap is inversely proportional to, and when being disturbed, rotor deviates the equilbrium position captivation that two ends are subject to simultaneously generation to be changed, this form
Magnetic suspension bearing has negative stiffness, and the characteristic of open-loop unstable.
Utility model content
This utility model is directed to produced problem in prior art, provides a kind of new technical scheme to solve.Specifically：
In traditional active magnetic bearings design basis, rotor is changed into the rotor including permanent magnet, magnetic suspension journal bearing stator ferrum
Core is electric magnet, this electric magnet is wound with solenoid, solenoid is connected with the unidirectional current of specific direction.One group of radial axle
Hold by more than 4 and be that even number journal bearing stator forms, and along the distribution of p-m rotor even circumferential.
Its operation principle is：Permanent magnet adopts axial charging, and one end is N pole, and the other end is S pole.Journal bearing stator ferrum
Core respectively be wound around solenoid thereon together form some along the equally distributed electric magnet of rotor circumference, its effect is logical
Cross the generation electromagnetic force that switches on power, p-m rotor is played with the effect attracting or repelling, makes rotor be in poised state.Electric magnet
Pole orientation respectively by the solenoid being disposed thereon the sense of current determine.
Further：Rotor also includes mandrel, and permanent magnet is fixed in rotor mandrel, and this mandrel can bear higher rotating speed
And moment of torsion.
Preferably：Rotor mandrel is made up of non-magnet_conductible material.
Further：Rotor also includes high intensity sheath, the outer ring setting high intensity sheath of permanent magnet, and its effect is in permanent magnetism
During body high-speed rotation, it is played with constraint effect, bears the centrifugal force of permanent magnet.
Preferably：High intensity sheath is made up of non-magnet_conductible material, and non-magnet_conductible material can more effectively ensure stator and rotor
Magnetic field will not form short circuit in sheath, reduce the eddy-current loss that rotor produces in high-speed rotation simultaneously.
Preferably：Magnetic suspension journal bearing stator core is c-type electric magnet.So-called c-type electric magnet, i.e. certain of electric magnet
The orthographic projection of one angle is similar to the shape of " C ".
This utility model compared with the existing technology has advantages below and effect：1st, when p-m rotor normally suspends, electricity
Stream direction makes magnetic direction in magnetic suspension journal bearing iron core consistent with the magnetic direction of permanent magnet, now p-m rotor with
When be subject to magnetic suspension bearing electric magnet repulsion, in regulating winding, rotor is made in scolding that symmetry direction is subject to by the size of electric current
Power equal it is ensured that the suspension of p-m rotor.Be subject to due to p-m rotor is repulsion, and now bearing rigidity is positive rigidity, with respect to
Traditional magnetic bearing, this utility model has more preferable system stability.2nd, when p-m rotor is subject to the eccentric force in a direction
When, the magnetic suspension journal bearing iron core on eccentric force direction produces repulsion with rotor, now on eccentric force opposite direction
Journal bearing iron core makes stator field contrary with the magnetic direction of rotor permanent magnet by changing the sense of current, and now iron core is to forever
Magnet rotor produces captivation.When two iron cores are when making a concerted effort to be equal to eccentric force, you can keep stablizing of p-m rotor.Compared to biography
The magnetic suspension bearing of system, due to can only produce captivation, therefore eccentric force must all be born by single electromagnetic core, in bias
In the case that power is constant, the volume of single electromagnetic core can be reduced thus reducing whole magnetic suspension bearing using this utility model
Volume.
Brief description
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before not paying creative labor
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
A-A sectional view when Fig. 2 normally suspends for rotor.
Fig. 3 is subject to an A-A sectional view during direction eccentric force for rotor.
Label declaration：1：Permanent magnet, 2：Mandrel, 3：High intensity sheath, 4,5,6,7：Iron core, 8,9,10,11：Solenoid
Specific embodiment
With reference to embodiment, this utility model is described in further detail, following examples are to this utility model
Explanation and this utility model is not limited to following examples.
As shown in figure 1, permanent magnet 1 adopts axial charging, one end is N pole, and the other end is S pole.Permanent magnet 1 is arranged on rotor
On mandrel 2, the outer ring setting high intensity sheath 3 of permanent magnet 1, its effect is in permanent magnet 1 and mandrel 2 high-speed rotation, it to be risen
To constraint effect, bear the centrifugal force of permanent magnet 1.Magnetic suspension journal bearing iron core 4,5,6,7 is respectively with the electricity being disposed thereon
Magnetic coil 8,9,10,11 together forms 4 groups of electric magnet, and its effect is to produce electromagnetic force rotor is played with the work attracting or repelling
With the pole orientation of electric magnet is determined by the sense of current in the solenoid 8,9,10,11 being disposed thereon respectively.
As shown in Fig. 2 when p-m rotor normally suspends, the sense of current makes in magnetic suspension journal bearing iron core 4,6
Magnetic direction is consistent with the magnetic direction of permanent magnet 1, and now p-m rotor is subject to scolding of magnetic suspension bearing electromagnetic core 4,6 simultaneously
Power, makes the repulsion that rotor is subject in symmetry direction equal by the size of electric current in regulating winding 8,10 it is ensured that p-m rotor
Suspend.Be subject to due to p-m rotor is repulsion, and now bearing rigidity is positive rigidity, and with respect to traditional magnetic bearing, this practicality is newly
Type has more preferable system stability.
As shown in figure 3, when rotor is subject to the eccentric force in a direction, the magnetic suspension journal bearing on eccentric force direction
Iron core 4 produces repulsion with rotor, and now the journal bearing iron core 6 on eccentric force opposite direction makes to determine by changing the sense of current
Sub- magnetic field is contrary with the magnetic direction of rotor permanent magnet 1, and now iron core 6 produces captivation to rotor.When making a concerted effort of two iron cores
During equal to eccentric force, you can keep stablizing of rotor.Traditional magnetic suspension bearing, due to captivation can only be produced, therefore eccentric
Power must all be born by single electromagnetic core, can reduce single electricity using this utility model in the case that eccentric force is constant
The volume of magnetic core is thus reduce the volume of whole magnetic suspension bearing.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, the shape of its parts and components, it is named
Title etc. can be different.The equivalent or simple change that construction described in all inventional idea according to this utility model, feature and principle are done,
All it is included in the protection domain of this utility model patent.This utility model person of ordinary skill in the field can be to being retouched
The specific embodiment stated is made various modifications or supplements or substituted using similar mode, without departing from this utility model
Structure or surmount scope defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (6)
1. a kind of hybrid radial magnetic bearing of p-m rotor, including rotor and journal bearing stator it is characterised in that：Rotor includes
Permanent magnet, permanent magnet adopts axial charging, journal bearing stator at least 4 and be even number, bearing stator is by iron core and electricity
The electric magnet of magnetic coil composition, described solenoid is wrapped on iron core and is connected with the unidirectional current of specific direction, and all bearings are fixed
Son is along the distribution of p-m rotor even circumferential.
2. p-m rotor as claimed in claim 1 hybrid radial magnetic bearing it is characterised in that：Described p-m rotor also wraps
Include the mandrel of fixed permanent magnet.
3. p-m rotor as claimed in claim 2 hybrid radial magnetic bearing it is characterised in that：Described mandrel is not magnetic conduction
Material.
4. the p-m rotor as described in claim 1 or 2 or 3 hybrid radial magnetic bearing it is characterised in that：Described permanent magnetism turns
Son periphery also includes the high intensity sheath of fixed permanent magnet.
5. p-m rotor as claimed in claim 4 hybrid radial magnetic bearing it is characterised in that：Described high intensity sheath is
Non-magnet_conductible material.
6. any one p-m rotor as described in claim 1,2,3 or 5 hybrid radial magnetic bearing it is characterised in that：Institute
The iron core stated becomes c-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620689610.1U CN205956219U (en) | 2016-06-30 | 2016-06-30 | Permanent magnet rotor's radial magnetic bearing of mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620689610.1U CN205956219U (en) | 2016-06-30 | 2016-06-30 | Permanent magnet rotor's radial magnetic bearing of mixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205956219U true CN205956219U (en) | 2017-02-15 |
Family
ID=57970180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620689610.1U Active CN205956219U (en) | 2016-06-30 | 2016-06-30 | Permanent magnet rotor's radial magnetic bearing of mixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205956219U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015333A (en) * | 2016-06-30 | 2016-10-12 | 天津飞旋科技研发有限公司 | Mixed radial magnetic bearing of permanent magnetic rotor |
| CN108488343A (en) * | 2018-03-23 | 2018-09-04 | 南京理工大学 | A kind of high life Variable lead mechanism based on electromagnetic force equilibrium |
| CN109989336A (en) * | 2019-04-26 | 2019-07-09 | 重庆大学 | A kind of wind resistance damping bridge boom carrying out vibration isolation with magnetic levitation technology |
| CN114876955A (en) * | 2022-06-08 | 2022-08-09 | 珠海格力电器股份有限公司 | Magnetic suspension bearing and compressor |
-
2016
- 2016-06-30 CN CN201620689610.1U patent/CN205956219U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015333A (en) * | 2016-06-30 | 2016-10-12 | 天津飞旋科技研发有限公司 | Mixed radial magnetic bearing of permanent magnetic rotor |
| CN108488343A (en) * | 2018-03-23 | 2018-09-04 | 南京理工大学 | A kind of high life Variable lead mechanism based on electromagnetic force equilibrium |
| CN108488343B (en) * | 2018-03-23 | 2020-07-31 | 南京理工大学 | High-life variable-lead screw mechanism based on electromagnetic force balance |
| CN109989336A (en) * | 2019-04-26 | 2019-07-09 | 重庆大学 | A kind of wind resistance damping bridge boom carrying out vibration isolation with magnetic levitation technology |
| CN114876955A (en) * | 2022-06-08 | 2022-08-09 | 珠海格力电器股份有限公司 | Magnetic suspension bearing and compressor |
| CN114876955B (en) * | 2022-06-08 | 2023-05-23 | 珠海格力电器股份有限公司 | Magnetic suspension bearing and compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Ning Road 300457 Tianjin City Development Zone No. 34 Mu Tong Jinbin development plant No. 18 plant northeast side Patentee after: Tianjin Feixuan science and Technology Co Ltd Address before: Binhai Development Zone, Tianjin City, 300457 Mu Ning Road No. 34 Building No. 18 factory Jinbin development through the northeast side Patentee before: Tianjin Flying Science Development Co., Ltd. |
|
| CP03 | Change of name, title or address |
Address after: Block D, No.90, 12th Street, Binhai New Area Development Zone, Tianjin Patentee after: Tianjin Feixuan Technology Co.,Ltd. Address before: 300457 northeast side of No.18 plant of Jinbin development communication plant, No.34 Muning Road, Tianjin Development Zone Patentee before: TIANJIN EMAGING TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address |