CN101975222A - Flat type vertical coil outer rotor hybrid magnetic bearing - Google Patents
Flat type vertical coil outer rotor hybrid magnetic bearing Download PDFInfo
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- CN101975222A CN101975222A CN2010105194113A CN201010519411A CN101975222A CN 101975222 A CN101975222 A CN 101975222A CN 2010105194113 A CN2010105194113 A CN 2010105194113A CN 201010519411 A CN201010519411 A CN 201010519411A CN 101975222 A CN101975222 A CN 101975222A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0459—Details of the magnetic circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/0487—Active magnetic bearings for rotary movement with active support of four degrees of freedom
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/20—Application independent of particular apparatuses related to type of movement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention relates to a flat type vertical coil outer rotor hybrid magnetic bearing which is a four-shaft hybrid magnetic bearing consisting of two vertically symmetrical double-shaft single-edge vertical coil hybrid magnetic bearings, and each double-shaft single-edge vertical coil hybrid magnetic bearing comprises a rotor and a stator, wherein each rotor comprises an outer magnetic permeability ring and a rotor iron core; each stator comprises a stator disk, a plurality of coil iron cores and a plurality of electromagnetic coils, the stator disk comprises a plurality of magnetic poles distributed uniformly; the plurality of coil iron cores are arranged at the outer side of each stator disk and uniformly distributed along the circumference of the stator disk, and each coil iron core corresponds to one magnetic pole; the plurality of electromagnetic coils are respectively and vertically sleeved on a coil iron core; the rotors are arranged at the outer sides of the stators; and a plurality of magnetic poles are connected at the outer edges to form an integral circular ring. In the invention, the two single-edge vertical coil hybrid magnetic bearings are used for forming the four-shaft hybrid magnetic bearing, thus the structure is compacter; and the magnetic poles which are mutually separated in the prior art are connected into an integral circular ring at the outer edges, thereby the eddy-current loss and the block torque are reduced while the rotors run.
Description
Technical field
The present invention relates to a kind of non-contact magnetically suspension bearing, especially relate to a kind of four hybrid magnetic bearing structures of tablet with vertical coil and external rotor, it can be used as the contactless support of rotary component, particularly as the highi degree of accuracy of space system, the support mechanism of low noise attitude control flywheel.
Background technique
The loss of magnetic bearing is an important overall target, directly has influence on its application.Magnetic bearing can be divided into passive magnetic bearing, active magnetic bearings and hybrid magnetic bearing according to the magnetic force presentation mode.The stable region of passive magnetic bearing is very little; Active magnetic bearings must be set bias current and comes to provide the operation point to magnetic bearing in electromagnetic coil, it is big therefore to control electric current, and power consumption is big; And hybrid magnetic bearing combines permanent magnet bias with Electromagnetic Control, wherein permanent magnet provides the main magnetic flux and the offset operation point magnetic field of magnetic circuit, electromagnetic coil provides the adjusting magnetic flux of magnetic circuit, make rotor be in the equilibrium position by certain control law, can significantly reduce to control electric current, reduce power consumption, thereby be particularly suitable for the demanding space of power consumption with applications such as flywheels.
Yet, it (is that the two is an integral body that the magnetic bobbin core of present permanent magnet offset radial hybrid magnetic bearing adopts integrative-structure with the work magnetic pole, particularly, going up magnetic bobbin core and last magnetic conduction pole plate exactly is an integral body, and lower coil iron core and following magnetic conduction pole plate are an integral body).And, in existing hybrid magnetic bearing structure, magnetic pole is separated from each other at circumferencial direction, because this field structure that is separated from each other, causing its radial magnetic field along the circumferential direction is (being that magnetic field is heterogeneous) of alternate, cause rotor when high speed rotating, the magnetic flux by the rotor core circumferential surface is by N frequency multiplication (N the equals number of magnetic poles) cyclically-varying of rotating speed, and the eddy current loss of bringing thus be can not ignore.
Though the lamination of rotor core can reduce eddy current loss to a certain extent.And the lamination thickness that further reduces rotor core can significantly reduce eddy current loss, but the problem that will bring the support strength of magnetic bearing to weaken like this.
Therefore, for the high speed flywheel rotor, also there is tangible technical disadvantages in present hybrid magnetic bearing: at first, the eddy current of rotor core will produce significantly retardance moment, control with AEROSPACE APPLICATION occasions such as magnetically levitated flywheels in attitude, the power consumption of drive motor be will significantly increase, and the stability and the precision of satellite attitude control influenced; Secondly, when when reducing in the housing that windage loss is enclosed in high speed rotor high vacuum, excessive eddy current loss also will increase the difficulty of rotor heat dissipation design; Once more, four magnetic bearings adopt 2 bilateral coil magnetic bearing combinations, can make the height of magnetic bearing bigger, and especially vertical coil can further increase the whole height of magnetic bearing, thereby causes the increase of volume and the increase of quality.In addition, present hybrid magnetic bearing magnetic bobbin core adopts integrative-structure with the work magnetic pole, also has complex structure, can not make full use of the shortcomings such as circumferential area of magnetic pole.
Summary of the invention
The technical problem to be solved in the present invention is, at external rotor magnetic bearing structure, overcomes magnetic bearing complex structure, big, the energy consumption high-technology difficult problem of quality, simplifies the magnetic bearing structure, reduces the magnetic bearing quality, reduces magnetic bearing suspension energy consumption.Therefore, the invention provides a kind of light weight, volume is little, energy consumption is low hybrid magnetic bearing, this is a kind of tablet hybrid magnetic bearing that includes vertical coil, uniform radial pole and external rotor.
To achieve the above object of the invention, technical solution of the present invention is: a kind of tablet vertical coil external rotor mixed magnetic bearing, it is four hybrid magnetic bearings that are made of the monolateral vertical coil hybrid magnetic bearing of symmetrically arranged diaxon about in the of 2, and the monolateral vertical coil hybrid magnetic bearing of each described diaxon comprises rotor and stator.This rotor comprises: outer magnetic guiding loop; Rotor core, coaxial line are sleeved on the inner chamber of this outer magnetic guiding loop.This stator comprises: stator disc includes a plurality of equally distributed magnetic poles; A plurality of magnetic bobbin cores are arranged on the outside of this stator disc and along evenly the distributing in interior week of this stator disc, and each magnetic bobbin core is corresponding with the position of 1 magnetic pole; And a plurality of electromagnetic coils, vertical sleeve is contained on the magnetic bobbin core respectively; And described rotor is arranged on the outside of described stator.Wherein, the continuous as a whole annulus in described a plurality of magnetic pole its outer edges place.
According to an embodiment of tablet vertical coil external rotor mixed magnetic bearing of the present invention, described stator disc is circular, and it comprises: go up the magnetic conduction pole plate; Following magnetic conduction pole plate is positioned at the described magnetic conduction pole plate below of going up; The mounting disc of magnetic post is arranged on described going up between magnetic conduction pole plate and the following magnetic conduction pole plate, and this magnetic post mounting disc is magnetic conduction not; And a plurality of permanent magnets, evenly being embedded in the mounting disc of described magnetic post, described permanent magnet axially magnetizes in the same way along described stator disc; And described magnetic conduction pole plate and the following magnetic conduction pole plate gone up be evenly divided into radially 4 magnetic poles respectively along the circumference, and each described magnetic pole of magnetic conduction pole plate down is set to the corresponding described magnetic pole of going up the magnetic conduction pole plate symmetrical up and down.
Between the adjacent pole of described 4 magnetic poles going up the magnetic conduction pole plate and between the adjacent pole of described 4 magnetic poles of magnetic conduction pole plate down respectively its outer edges place fuse by passage, wherein this passage forms by having the long-pending magnet case of small bore.
The intermediate portion of the stator disc 24 of the invention described above magnetic bearing is that magnetic post mounting disc 242 and one group are by equally distributed circle of position of magnetic pole or fan-shaped column permanent magnet.Same set of diaxon magnetic bearing permanent magnet magnetizes vertically in the same way, and the permanent magnet magnetizing direction of magnetic bearing is opposite up and down.Permanent magnet two ends up and down is magnetic conduction pole plates (promptly going up magnetic conduction pole plate 241 and following magnetic conduction pole plate 243) of symmetrical configuration.Every magnetic conduction pole plate is evenly divided into four field structures radially along the circumference.Each magnetic pole is corresponding with an electromagnetic coil, the plane of magnetic conduction pole plate and magnetic bobbin core axis normal.In the outer rim of magnetic conduction pole plate, fuse by the long-pending magnet case of small bore between the adjacent pole, 4 magnetic poles connect into the annulus of an integral body at the outer rim place.Therefore, when rotor was in the equilibrium position, the radial permanent magnet bias magnetic field of working gas gap was that the eddy current loss that the radial permanent magnet magnetic flux produces in rotor core is reduced to minimum level uniformly on the whole circumference face.The present invention adopts the rotor core of lamination, the eddy current loss of the magnetic bearing rotor core that permanent magnet flux disturbance and coil control flux change is brought when being used for further reducing rotor and departing from the equilibrium position.
The present invention is connected to a whole annulus with the common separated magnetic pole its outer edges of magnetic bearing place, because the permanent magnet of same set of diaxon magnetic bearing is axially magnetizing in the same way, the magnetic flux that permanent magnet produces passes in and out rotor core by radial direction through working gas gap in the magnetic pole outer rim.Therefore, when rotor was in the equilibrium position, the radial permanent magnet magnetic flux of working gas gap was uniformly on the whole circumference face, thereby eddy current loss and retardance moment during with rotor operation are reduced to minimum level.The magnetic flux that electromagnetic coil produces is pressed radial direction in the turnover rotor core of work gas gap in the magnetic pole outer rim, also has sub-fraction electromagnetism magnetic flux along circumferentially entering adjacent pole through leading pole panel edges attachment portion.Because the joint sectional area is less, even if therefore less magnetic flux also produces very big Magnetic flux density, make the circumferential magnetic circuit of pole edge attachment portion saturated, that is to say, the long-pending magnet case of the small bore of passage 8 can make also that under less magnetic flux the circumferential magnetic circuit of pole edge attachment portion is saturated.Like this, can guarantee that the Electromagnetic Control magnetic circuit coupling effect of each magnetic pole is very little, can not exert an influence control characteristic.
Compared with prior art, the invention has the advantages that: adopt 2 monolateral coil diaxon magnetic bearings to be combined into four magnetic bearings, reduced coil quantity, reduced the height and the structure complexity of magnetic bearing, alleviated the quality of magnetic bearing; Adopt vertical coil uniform radial pole structure, the magnetic pole its outer edges place of separated magnetic bearing in the prior art is connected to a whole annulus, when rotor is in the equilibrium position, the radial permanent magnet magnetic flux of working gas gap is uniformly on the whole circumference face, and eddy current loss and retardance moment from the source during with rotor operation have been reduced to minimum level; The magnetic bobbin core of magnetic bearing of the present invention structurally separates with magnetic pole, processes and assemble more convenient, and makes magnetic pole can make full use of its circumferential area, increases bearing capacity.
Description of drawings
Fig. 1 is the structural representation of a specific embodiment of magnetic bearing of the present invention;
Fig. 2 be magnetic bearing shown in Figure 1 on/structural representation of following magnetic conduction pole plate;
Fig. 3 be shown in Figure 2 on/the partial structurtes schematic perspective view of following magnetic conduction pole plate;
Fig. 4 is magnetic circuit figure of the present invention.
Wherein, description of reference numerals is as follows:
The 1-rotor,
The 11-rotor core,
The outer magnetic guiding loop of 12-,
The 2-stator,
The 21-electromagnetic coil,
The 22-magnetic bobbin core,
23-magnetic conduction cover plate,
The 24-stator disc,
The last magnetic conduction pole plate of 241-,
The mounting disc of 242-magnetic post,
Magnetic conduction pole plate under the 243-,
The 244-permanent magnet,
The 25-connecting rod,
26-stator installation shaft,
The 27-through hole,
The 3-working gas gap,
The 4-spacer ring,
The 5-spacer ring,
The 6-electromagnetic circuit,
The 7-permanent magnetic circuit,
The 8-passage,
The 9-magnetic pole.
Embodiment
Below in conjunction with drawings and Examples the present invention is specifically described.
Referring to Fig. 1, tablet vertical coil external rotor mixed magnetic bearing of the present invention is a kind of four hybrid magnetic bearings of tablet low-loss that include vertical coil, uniform radial pole and external rotor, constitute this four hybrid magnetic bearings by 2 monolateral vertical coil hybrid magnetic bearings of identical diaxon up and down, metal (upper is symmetrical arranged, and the centre is separated by spacer ring 4 and spacer ring 5.
The monolateral vertical coil hybrid magnetic bearing of each described diaxon is made up of rotor 1 and stator 2.Rotor 1 is enclosed within on the stator 2 and constitutes external rotor.Rotor 1 is made of rotor core 11 and outer magnetic guiding loop 12, and wherein rotor core 11 coaxial lines are sleeved on the inner chamber of outer magnetic guiding loop 12.The rotor core 11 of rotor 1 adopts the folded system of good sheet-type soft magnetic material (as the electrical steel plate) punching press of a kind of magnetic property to form.
Leave gap (being working gas gap 3) between the inner ring surface of the outer ring surface of the stator disc 24 of stator 2 and the rotor core 11 of rotor 1.
The outer magnetic guiding loop 12 of the magnetic conduction cover plate 23 of stator 2, last magnetic conduction pole plate 241, following magnetic conduction pole plate 243 and rotor 1 all adopts the good soft magnetic material of magnetic property to process.Described permanent magnet 244 rounded or fan-shaped columns, the good rare-earth permanent magnet of employing magnetic is made and is axially magnetized in the same way.Described magnetic post mounting disc 242 adopts non-permeability alloys materials of aluminum alloy or titanium alloy to make.Paint-dipping drying formed after described electromagnetic coil 21 adopted the good enameled cable coiling of electric conductivity.
4 vertical electromagnetic coils of placing 21 place between magnetic conduction cover plate 23 and the stator disc 24.
As shown in Figure 2, corresponding to a plurality of permanent magnets 244 that evenly are arranged between magnetic conduction pole plate 241 and the following magnetic conduction pole plate 243, every magnetic conduction pole plate (promptly going up magnetic conduction pole plate 241 and following magnetic conduction pole plate 243) is evenly divided into 4 magnetic poles 9 radially respectively along the circumference, and 4 magnetic poles 9 of last magnetic conduction pole plate 231 are symmetrical about in the of 9 with 4 magnetic poles of following magnetic conduction pole plate 233.
Described magnetic bobbin core 22 adopts with described 4 magnetic poles 9 and divides body structure, on promptly described magnetic bobbin core 22 and the described magnetic pole 9 of formation/and following magnetic conduction pole plate is separable each other independent component, and link together by connecting rod 25.
Described magnetic post mounting disc 242 mainly contains the effect of two aspects: it is an important structural member for (1), be used for be basically whole circular/following magnetic conduction pole plate between location and fixed permanent magnet 244, also bear the pressure between the magnetic conduction pole plate up and down simultaneously, protection permanent magnet 244 makes it not crushed; (2) because each magnetic pole 9 can corresponding polylith permanent magnet 244, utilize this magnetic post mounting disc 242 to carry out combining and configuring, make full use of the sectional area of permanent magnet, help producing even bias magnetic field at the working gas gap place to the polylith permanent magnet.
In magnetic conduction pole plate outer rim, fuse by the long-pending magnet case (being passage 8) of small bore respectively between the adjacent pole of described upward 4 magnetic poles 9 of magnetic conduction pole plate 241 and between the adjacent pole of 4 magnetic poles 9 of following magnetic conduction pole plate 243, make 4 magnetic poles 9 going up magnetic conduction pole plate 241 be linked to be a whole annulus at the outer rim place, 4 magnetic poles 9 of following magnetic conduction pole plate 243 equally also connect into a whole annulus at the outer rim place.Thereby when rotor was in the equilibrium position, the radial permanent magnet magnetic flux of working gas gap was uniform on the whole circumference face.
Described passage 8 should be tried one's best in the radially residing position of last/following magnetic conduction pole plate near the position that is provided with of rotor 1, promptly, the passage corresponding with internal rotor should be arranged on the inner edge of magnetic conduction pole plate, the passage corresponding with external rotor should be arranged on the outer rim of magnetic conduction pole plate, could guarantee to form in air gap and rotor uniform magnetic field like this.
As shown in Figure 4, constitute the permanent magnetic circuit 7 of magnetic bearing by permanent magnet 244, last magnetic conduction pole plate 241, following magnetic conduction pole plate 243, rotor 1 and air gap 3; Constitute the electromagnetic circuit 6 of magnetic bearing by magnetic bobbin core 22, electromagnetic coil 21, magnetic conduction cover plate 23, last magnetic conduction pole plate 241, air gap 3 and rotor 1.
For the passage 8 that is communicated with between the adjacent pole 9, permanent magnet 244 can form even bias magnetic field in the time of should guaranteeing that rotor is in the equilibrium position to the setting of its concrete structure size in working gas gap 3, guarantees that again the magnetic excitation circuit that electromagnetic coil produces is separate.From the angle of energy loss, connect the big more permanent magnet 244 that helps more of area and form even bias magnetic field, reduce eddy current loss; From the angle of control, connecting area, more little to help magnetic excitation circuit more separate, is convenient to the control of magnetic bearing.The multiple factors such as material of the size that passage connects area and permanent magnet material and sectional area, magnetic conduction pole plate are relevant.The sectional area of suitable passage 8 is about 1%～15% of single magnetic pole area, and more excellent scope is 2%～4%.
As shown in Figure 3/the partial structurtes schematic perspective view of following magnetic conduction pole plate, on its expression is of the present invention/example of following magnetic conduction pole plate, wherein, the area S1 of the working surface of each magnetic pole 9 (1/4 cylindrical side) is 251.3mm
2, the sectional area S2 of passage 8 is 8mm
2, be about each magnetic pole 9 working surface area S1 (being single magnetic pole area) 3.2%.For example, for example shown in Figure 3, when the size of passage 8 was suitable, by finite element numerical result of calculation as can be known, the Magnetic flux density in permanent magnet bias magnetic field minimum was 0.746T in the air gap 3, is 0.751T to the maximum.
What form significantly contrast therewith is, when no passage 8 linked to each other between each adjacent pole 9, by finite element numerical result of calculation as can be known, the Magnetic flux density in the permanent magnet bias magnetic field in the local gaps corresponding with the interval of magnetic pole 9 was less, be about 0.262T, remaining part is about 0.754T.
As can be seen, when between adjacent pole 9, having the suitable passage of size 8 to be communicated with, can significantly improve the uniformity of the magnetic flux distribution in permanent magnet bias magnetic field in the air gap 3.
Permanent magnetic circuit 7 also provides the passive stabilization of rotor axial motion except providing the operation point for magnetic bearing.Therefore, tablet vertical coil external rotor mixed magnetic bearing structure shown in Figure 1 can constitute a kind of radially four ACTIVE CONTROL hybrid magnetic bearings.
According to the embodiments of the invention shown in Fig. 1-Fig. 4 and to these embodiments' associated description, as can be seen: 2 diaxon hybrid magnetic bearings that constitute four hybrid magnetic bearings of the present invention all adopt monolateral loop construction, promptly only at the one-sided magnetic conduction cover plate 23 that is provided with, magnetic bobbin core 22 and electromagnetic coil 21, and set gradually the magnetic conduction cover plate 23 of a diaxon hybrid magnetic bearing from top to bottom, magnetic bobbin core 22 and the suit electromagnetic coil 21 on it and the stator disc 24 of stator disc 24 and another diaxon hybrid magnetic bearing, magnetic bobbin core 22 and suit electromagnetic coil 21 and the magnetic conduction cover plate 23 on it.
Between the following magnetic conduction pole plate 243 of the stator 2 of 2 described diaxon hybrid magnetic bearings, separate, between the rotor 1 of 2 described diaxon hybrid magnetic bearings, separate by spacer ring 5 by spacer ring 4.
The stator disc 24 of the magnetic conduction cover plate 23 of a diaxon hybrid magnetic bearing, magnetic bobbin core 22, stator disc 24 and another diaxon hybrid magnetic bearing, magnetic bobbin core 22, magnetic conduction cover plate 23 circumferentially are connected by 4 connecting rods 25 respectively successively along described magnetic conduction cover plate 23, and the stator 2 of 2 described diaxon hybrid magnetic bearings after the connection is sleeved on the stator installation shaft 26.
Working principle of the present invention is: permanent magnet 244 provides the biasing magnetic flux for the radially working gas gap 3 between external rotor 1 and the inner stator 2, produces the required radial force of magnetic bearing static suspension.When left and right sides air gap equated, the radial force that two relative magnetic poles produce was cancelled out each other, and rotor 1 is in the equilibrium position.When rotor 1 radial displacement to the left and right, the left side air gap reduces, thereby the left side permanent magnet flux increases and suction becomes big, and the right side air gap becomes big simultaneously, and the right side permanent magnet flux reduces and suction diminishes, and the result can make rotor 1 continue to move to the left.In order to suppress this imbalance, electromagnetic coil 21 produces electromagnetism magnetic flux and the stack of permanent magnet bias magnetic flux, plays the effect that weakens the left side air-gap flux, strengthens the right side air-gap flux, thereby produce control force rotor 1 is retracted the equilibrium position.
When rotor 1 had axial displacement, the magnetic line of force between rotor 1 and the stator 2 twisted and produces axially stable restoring force, made rotor 1 axially obtain driven suspension.
Claims (10)
1. tablet vertical coil external rotor mixed magnetic bearing, it is that the monolateral vertical coil hybrid magnetic bearing of each described diaxon comprises by 2 four hybrid magnetic bearings constituting of the monolateral vertical coil hybrid magnetic bearing of symmetrically arranged diaxon up and down:
Rotor (1) comprising:
Outer magnetic guiding loop (12);
Rotor core (11), coaxial line are sleeved on the inner chamber of this outer magnetic guiding loop (12); And
Stator (2) comprising:
Stator disc (24) includes a plurality of equally distributed magnetic poles (9);
A plurality of magnetic bobbin cores (22) are arranged on the outside of this stator disc (24) and along evenly the distributing in interior week of this stator disc (24), and each magnetic bobbin core (22) is corresponding with the position of 1 magnetic pole (9); And
A plurality of electromagnetic coils (21), vertical sleeve is contained on the magnetic bobbin core (22) respectively; And
Described rotor (1) is arranged on the outside of described stator (2).
2. tablet vertical coil external rotor mixed magnetic bearing according to claim 1, wherein, described a plurality of magnetic poles (9) its outer edges place as a whole annulus that links to each other.
3. tablet vertical coil external rotor mixed magnetic bearing according to claim 1, wherein, described stator disc (24) is circular, and it comprises:
Last magnetic conduction pole plate (241);
Following magnetic conduction pole plate (243) is positioned at described magnetic conduction pole plate (241) below of going up;
Magnetic post mounting disc (242) is arranged on described going up between magnetic conduction pole plate (241) and the following magnetic conduction pole plate (243), and this magnetic post mounting disc (242) is magnetic conduction not; And
A plurality of permanent magnets (244) are evenly embedded in described magnetic post mounting disc (242), described permanent magnet (244) axially magnetizing in the same way along described stator disc (24); And
Described magnetic conduction pole plate (241) and the following magnetic conduction pole plate (243) gone up is evenly divided into radially 4 magnetic poles (9) respectively along the circumference, and each described magnetic pole of magnetic conduction pole plate (243) down be set to the corresponding described magnetic pole of going up magnetic conduction pole plate (241) about symmetrical.
4. tablet vertical coil external rotor mixed magnetic bearing according to claim 3, wherein, between the adjacent pole of described 4 magnetic poles (9) of going up magnetic conduction pole plate (241) and between the adjacent pole of described 4 magnetic poles (9) of magnetic conduction pole plate (243) down respectively its outer edges place fuse by passage (8), wherein this passage (8) forms by having the long-pending magnet case of small bore.
5. tablet vertical coil external rotor mixed magnetic bearing according to claim 3 wherein, has working gas gap (3) between the inner ring surface of the rotor core (11) of the outer ring surface of the stator disc (23) of described stator (2) and described rotor (1).
6. tablet vertical coil external rotor mixed magnetic bearing according to claim 5, wherein, described stator (2) also comprises magnetic conduction cover plate (23), is arranged on the described magnetic bobbin core (22); And
The number of described magnetic bobbin core (22) is 4, and the number of described electromagnetic coil (21) also is 4.
7. tablet vertical coil external rotor mixed magnetic bearing according to claim 6, wherein,
Described magnetic conduction pole plate (241), permanent magnet (244), following magnetic conduction pole plate (243), air gap (3) and the rotor (1) gone up constitutes permanent magnetic circuit (7); And
Described magnetic conduction cover plate (23), magnetic bobbin core (22), electromagnetic coil (21), air gap (3), rotor (1) and last magnetic conduction pole plate (241) constitute electromagnetic circuit (6).
8. according to any described tablet vertical coil external rotor mixed magnetic bearing in the claim 1 to 7, wherein, described rotor core (11) comprises the unshakable in one's determination and lower rotor part iron core of upper rotor part, and described upper rotor part iron core and lower rotor part iron core all have lamination.
9. tablet vertical coil external rotor mixed magnetic bearing according to claim 6, wherein,
2 diaxon hybrid magnetic bearings that constitute described four hybrid magnetic bearings all adopt monolateral loop construction, only at the described magnetic conduction cover plate of one-sided placement (23), described magnetic bobbin core (22) and described electromagnetic coil (21), and the magnetic conduction cover plate (23), magnetic bobbin core (22) and the suit that set gradually a diaxon hybrid magnetic bearing from top to bottom electromagnetic coil (21) and stator disc (24), magnetic bobbin core (22) and the suit of stator disc (24), another diaxon hybrid magnetic bearing electromagnetic coil (21) and the magnetic conduction cover plate (23) on it on it;
Between the stator disc (24) of the stator (2) of 2 described diaxon hybrid magnetic bearings, separate, between the rotor (1) of 2 described diaxon hybrid magnetic bearings, separate by spacer ring (5) by spacer ring (4).
10. tablet vertical coil external rotor mixed magnetic bearing according to claim 9, wherein,
The stator disc (24) of the magnetic conduction cover plate (23) of a diaxon hybrid magnetic bearing, magnetic bobbin core (22), stator disc (24) and another diaxon hybrid magnetic bearing, magnetic bobbin core (22), magnetic conduction cover plate (23) circumferentially are connected by 4 connecting rods (25) respectively successively described magnetic conduction cover plate (23), and the stator (2) of 2 described diaxon hybrid magnetic bearings after the connection is sleeved on the stator installation shaft (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105194113A CN101975222B (en) | 2010-10-26 | 2010-10-26 | Flat type vertical coil outer rotor hybrid magnetic bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105194113A CN101975222B (en) | 2010-10-26 | 2010-10-26 | Flat type vertical coil outer rotor hybrid magnetic bearing |
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| Publication Number | Publication Date |
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| CN101975222A true CN101975222A (en) | 2011-02-16 |
| CN101975222B CN101975222B (en) | 2013-01-09 |
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| CN2010105194113A Expired - Fee Related CN101975222B (en) | 2010-10-26 | 2010-10-26 | Flat type vertical coil outer rotor hybrid magnetic bearing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836069A (en) * | 2012-11-26 | 2014-06-04 | 张玉宝 | Magnetic bearing and control mode thereof |
| CN109139693A (en) * | 2018-10-23 | 2019-01-04 | 珠海格力电器股份有限公司 | Hybrid magnetic suspension thrust bearing |
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| JP2004162834A (en) * | 2002-11-14 | 2004-06-10 | Ishikawajima Harima Heavy Ind Co Ltd | Magnetic bearing |
| CN101608669A (en) * | 2009-07-24 | 2009-12-23 | 中国人民解放军国防科学技术大学 | A kind of mixed magnetic bearing with horizontal-coil uniform radial pole and low-loss outer rotor |
| CN101608670A (en) * | 2009-07-24 | 2009-12-23 | 中国人民解放军国防科学技术大学 | A kind of vertical coil uniform radial pole and low-loss outer rotor hybrid magnetic bearing |
| CN101771308A (en) * | 2008-12-31 | 2010-07-07 | 张玉宝 | Magnetic levitation rotor support system, magnetic levitation bearing and magnetic biasing weight reducing device |
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2010
- 2010-10-26 CN CN2010105194113A patent/CN101975222B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004162834A (en) * | 2002-11-14 | 2004-06-10 | Ishikawajima Harima Heavy Ind Co Ltd | Magnetic bearing |
| CN101771308A (en) * | 2008-12-31 | 2010-07-07 | 张玉宝 | Magnetic levitation rotor support system, magnetic levitation bearing and magnetic biasing weight reducing device |
| CN101608669A (en) * | 2009-07-24 | 2009-12-23 | 中国人民解放军国防科学技术大学 | A kind of mixed magnetic bearing with horizontal-coil uniform radial pole and low-loss outer rotor |
| CN101608670A (en) * | 2009-07-24 | 2009-12-23 | 中国人民解放军国防科学技术大学 | A kind of vertical coil uniform radial pole and low-loss outer rotor hybrid magnetic bearing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836069A (en) * | 2012-11-26 | 2014-06-04 | 张玉宝 | Magnetic bearing and control mode thereof |
| CN109139693A (en) * | 2018-10-23 | 2019-01-04 | 珠海格力电器股份有限公司 | Hybrid magnetic suspension thrust bearing |
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| Publication number | Publication date |
|---|---|
| CN101975222B (en) | 2013-01-09 |
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