CN110266168A - A kind of outer rotor magnetic suspension motor - Google Patents
A kind of outer rotor magnetic suspension motor Download PDFInfo
- Publication number
- CN110266168A CN110266168A CN201910587475.8A CN201910587475A CN110266168A CN 110266168 A CN110266168 A CN 110266168A CN 201910587475 A CN201910587475 A CN 201910587475A CN 110266168 A CN110266168 A CN 110266168A
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- CN
- China
- Prior art keywords
- outer rotor
- armature spindle
- rotor magnetic
- magnetic suspension
- suspension motor
- 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.)
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Classifications
-
- 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
- F16C32/0489—Active magnetic bearings for rotary movement with active support of five degrees of freedom, e.g. two radial magnetic bearings combined with an axial bearing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
-
- 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
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
-
- 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
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- 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
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
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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
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention provides a kind of outer rotor magnetic suspension motors, including armature spindle, outer rotor magnetic yoke, stator frame, stator core, electrical-coil, permanent magnet and magnetic bearing group, the outer rotor magnetic yoke is set on the armature spindle, the stator frame is set in the middle part of the armature spindle, the stator core is embedded in the outer ring of the stator frame, the electrical-coil is arranged on the outer ring of the stator core, and the permanent magnet is fixed on the inner surface of the outer rotor magnetic yoke and is oppositely arranged with the electrical-coil；The magnetic bearing group is set on the armature spindle, for controlling the armature spindle in the freedom degree in five directions.The outer rotor magnetic suspension motor is controlled by the freedom degree for carrying out five directions to armature spindle, effectively eliminate the friction of bearing, it reduces noise, be not necessarily to lubricating maintenance, extend the service life of bearing, the operation stability and operational efficiency of outer rotor magnetic suspension motor are improved, the service life of outer rotor magnetic suspension motor is extended.
Description
Technical field
The present invention relates to magnetic levitation technology field more particularly to a kind of outer rotor magnetic suspension motors.
Background technique
Outer rotor magnetic suspension motor and common permanent magnet synchronous motor in structure on the contrary, be a kind of rotor outside, stator
Permanent magnet synchronous motor inside.Its both had permanent-magnetic synchronous motor stator exciting current is small, energy index is high, be easy to adjust the speed and save
The advantages that energy effect is good, and have the advantages that big rotary inertia, good heat dissipation, saving copper wire, power density are high, high-efficient.
The rotor of common outer-rotor permanent magnet motor is supported using plain bearing, is had frictional dissipation in the course of work, is needed to moisten
Sliding, noise is high, bearing life is low, maintenance is difficult.
Summary of the invention
Present invention seek to address that problem as described above.It is an object of the present invention to provide in a kind of solution problem above
Any one outer rotor magnetic suspension bearing.Specifically, present invention offer can eliminate bearing friction, without lubrication, noise
Outer rotor magnetic suspension motor low, the service life is long.
In order to solve the above technical problems, the present invention provides a kind of outer rotor magnetic suspension motor, the outer rotor magnetic suspension
Motor includes armature spindle, outer rotor magnetic yoke, stator frame, stator core, electrical-coil, permanent magnet and magnetic bearing group, wherein described outer
Rotor rim is set on the armature spindle, and the stator frame is set in the middle part of the armature spindle, and the stator core is embedded
The outer ring of the stator frame, the electrical-coil are arranged on the outer ring of the stator core, and the permanent magnet is fixed on described outer
It the inner surface of rotor rim and is oppositely arranged with the electrical-coil；The magnetic bearing group is set on the armature spindle, is used for
The armature spindle is controlled in the freedom degree in five directions.
Wherein, the magnetic bearing group include the first radial direction magnetic bearing, the second radial direction magnetic bearing and axial magnetic bearing, described five
The freedom degree in a direction includes: axial freedom and the direction X1 perpendicular to the armature spindle axial direction, Y1 of the armature spindle
The freedom degree in direction, the direction X2 and the direction Y2, wherein the direction X1 perpendicular to the direction Y1, the direction X2 perpendicular to
The direction Y2；The axial magnetic bearing is set in one end of the armature spindle, for controlling the axially free of the armature spindle
Degree；First radial direction magnetic bearing and second radial direction magnetic bearing are set in the middle part of the armature spindle and are located at institute
State the two sides of stator core；First radial direction magnetic bearing is used to control the armature spindle in the direction X1 and the direction Y1
Freedom degree, second radial direction magnetic bearing is for controlling the armature spindle in the freedom degree in the direction X2 and the direction Y2.
Wherein, the outer rotor magnetic suspension motor further includes thrust disc, and the thrust disc is fixed on the one of the armature spindle
End, the axial magnetic bearing are set on the outer ring of the thrust disc.
Wherein, the outer rotor magnetic suspension motor further includes the auxiliary bearing group for being set in the armature spindle end, to
When the outer rotor magnetic suspension motor does not work, to the armature spindle load-bearing.
Wherein, the auxiliary bearing group include the first auxiliary bearing and the second auxiliary bearing, first auxiliary bearing and
Second auxiliary bearing is respectively sleeved at the both ends of the armature spindle.
Wherein, the outer rotor magnetic suspension motor further includes dustproof cover, and the dustproof cover is set in the end of the armature spindle
Portion, positioned at the outside of the magnetic bearing group.
Wherein, the outer rotor magnetic suspension motor further includes displacement sensor, and institute's displacement sensors pass through sensor branch
Frame is fixed on the stator frame and is arranged around the armature spindle.
Wherein, the stator frame is ring structure, and is provided with annular groove in the middle part of the periphery of the stator frame, described fixed
Sub- core is fixed in the annular groove.
Wherein, the stator frame is split type structure, including first annular bracket and the second ring support, first ring
Shape bracket is fixedly connected with second ring support.
Wherein, the outer rotor magnetic suspension motor is applied to outer rotor magnetic suspension shaft flow fan or outer rotor magnetic suspension is centrifuged
Blower.
According to the present invention provided outer rotor magnetic suspension motor by armature spindle carry out five directions freedom degree into
Row control, effectively eliminates the friction of bearing, reduces noise, is not necessarily to lubricating maintenance, extend the service life of bearing, improves outer rotor
The operation stability and operational efficiency of magnetic suspension motor extend the service life of outer rotor magnetic suspension motor.
Being described below for exemplary embodiment is read with reference to the drawings, other property features of the invention and advantage will
It is apparent from.
Detailed description of the invention
It is incorporated into specification and the attached drawing for constituting part of specification shows the embodiment of the present invention, and with
Principle for explaining the present invention together is described.In the drawings, similar appended drawing reference is for indicating similar element.Under
Attached drawing in the description of face is some embodiments of the present invention, rather than whole embodiments.Those of ordinary skill in the art are come
It says, without creative efforts, other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 schematically illustrates a kind of structural schematic diagram of outer rotor magnetic suspension motor of the invention；
Fig. 2 is the A-A cross-sectional view of Fig. 1；
Fig. 3 schematically illustrates another structural schematic diagram of outer rotor magnetic suspension motor of the invention；
Fig. 4 is the B-B cross-sectional view of Fig. 3；
Fig. 5 schematically illustrates another structural schematic diagram of outer rotor magnetic suspension motor of the invention；
Fig. 6 is the C-C cross-sectional view of Fig. 5.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.It needs
Illustrate, in the absence of conflict, the features in the embodiments and the embodiments of the present application can mutual any combination.
The present invention is existed by the way that an axial magnetic bearing and two radial direction magnetic bearings are arranged on armature spindle to control armature spindle
The freedom degree in five directions effectively eliminates the friction of bearing, reduces noise, without lubrication, is easy to maintain, and improves outer rotor magnetcisuspension
The efficiency of floating motor, extends motor service life.
With reference to the accompanying drawing, provided outer rotor magnetic suspension motor according to the present invention is described in detail.
Fig. 1 shows a kind of structural schematic diagram of specific embodiment of outer rotor magnetic suspension motor of the invention, and Fig. 2 is figure
1 A-A cross-sectional view, shown referring to Figures 1 and 2, which includes armature spindle 1, outer rotor magnetic yoke 2, stator
Frame 3, stator core 4, electrical-coil 5, permanent magnet 6 and magnetic bearing group 7.Wherein, outer rotor magnetic yoke 2 is set on armature spindle 1, stator
Frame 3 is set in the middle part of armature spindle 1, and stator core 4 is embedded in the outer ring of stator frame 3, be located at armature spindle 1 and outer rotor magnetic yoke 2 it
Between；Electrical-coil 5 is arranged on the outer ring of stator core 4, and permanent magnet 6 is fixed on the inner surface of outer rotor magnetic yoke 2 and and motor lines
Circle 5 is oppositely arranged；Magnetic bearing group 7 is set on armature spindle 1, for controlling armature spindle 1 in the freedom degree in five directions, with effective
Guarantee the operation stability of armature spindle 1, eliminate the friction between armature spindle 1 and bearing, reduces noise, improve magnetic suspension motor
Service performance, the service life for extending magnetic suspension motor.
In the present invention, freedom degree of the armature spindle 1 controlled by magnetic bearing group 7 in five directions includes: the axis of armature spindle 1
To freedom degree, i.e., freedom degree along the center axis extension direction of armature spindle 1, and perpendicular to the axial direction X1 of armature spindle 1,
The freedom degree in the direction Y1, the direction X2 and the direction Y2, wherein the direction X1 is perpendicular to the direction Y1, and the direction X2 is perpendicular to the direction Y2.
Specifically, magnetic bearing group 7 includes the first radial direction magnetic bearing 71, the second radial direction magnetic bearing 72 and axial magnetic bearing 73.
Wherein, axial magnetic bearing 73 is set in one end of armature spindle 1, for controlling the axial freedom of armature spindle 1；First radial magnetic axis
Hold 71 and second radial direction magnetic bearing 72 be set in the middle part of armature spindle 1, and be located at stator core along the axial direction of armature spindle 1
4 two sides are respectively used to the both ends radial direction freedom degree of control armature spindle 1.Specifically, the first radial direction magnetic bearing 71 turns for controlling
Sub- axis 1 is in the freedom degree in the direction X1 and the direction Y1, and the second radial direction magnetic bearing 72 is for controlling armature spindle 1 in the direction X2 and the direction Y2
Freedom degree.
Axial magnetic bearing 73 is the axial arrangement magnetic pole along armature spindle 1, to limit to armature spindle 1.To obtain foot
Enough big limit power, and consider assembling, and then make a thrust disc as between axial magnetic bearing 73 and armature spindle 1
Medium.
Outer rotor magnetic suspension motor of the invention further includes thrust disc 8, and thrust disc 8 is fixed on one end of armature spindle 1, is used for
Stablize the operation of armature spindle 1.Specifically, thrust disc 8 is fixed on the different ends of armature spindle 1 from outer rotor magnetic yoke 2.Axial magnetic bearing
73 are set on the outer ring of thrust disc 8, and the axial thrust of armature spindle 1 is passed to axial magnetic bearing 73 by thrust disc 8, control
The axial operation stability of armature spindle 1.
In high-speed rotating equipment, the centrifugal force of major diameter thrust disc may exceed the yield strength of material, therefore
It can be collapsible magnetic pole by the pole design of axial magnetic bearing 73, to reduce thrust disk diameter.
In addition, the outer rotor magnetic suspension motor further includes the auxiliary bearing group for being set in 1 end of armature spindle, to turn outside
When sub- magnetic suspension motor does not work, to 1 load-bearing of armature spindle.As shown in Figure 1, in the present embodiment, auxiliary bearing group includes first
Auxiliary bearing 91 and the second auxiliary bearing 92, the first auxiliary bearing 91 and the second auxiliary bearing 92 are respectively sleeved at armature spindle 1
Both ends.Specifically, the internal diameter of the first auxiliary bearing 91 and the second auxiliary bearing 92 is greater than the outer diameter at the both ends of armature spindle 1, to keep away
Exempt from that 1 both ends of armature spindle are caused to hinder and be worn in 1 magnetic suspension operational process of armature spindle, guarantees that the operation of armature spindle 1 is smooth
Property and service performance.
To avoid the impurity such as dust from being entered inside magnetic suspension motor by end, the abrasion of each component is caused, maneuverability is influenced
Energy and service life, the outer rotor magnetic suspension motor further include dustproof cover 10.Dustproof cover 10 is set in the end of armature spindle 1, i.e.,
The both ends of armature spindle 1 are each provided with a dustproof cover 10, and dustproof cover 10 is located at the outside of magnetic bearing group 7, effectively place extraneous ash
The impurity such as dirt, which enter in magnetic bearing, influences bearing operation.
Outer rotor magnetic suspension motor of the invention further includes at least one displacement sensor 11, to real-time detection armature spindle
1 positional shift situation, in order to monitor the operation stability of armature spindle 1.Specifically, displacement sensor 11 passes through sensor branch
Frame is fixed on stator frame 3 and surrounding rotor axis 1 is arranged, monitoring armature spindle 1 axially with radial direction (horizontal radial and vertical
Radially) the freedom degree situation of change in direction.Each displacement sensor 11 can monitor tri- directions orthogonal X, Y, Z
Freedom degree.
As shown in Figure 1, in the present embodiment, being provided on armature spindle 1 auxiliary positioned at the first radial direction magnetic bearing 71 and first
Help the first displacement sensor 111 between bearing 91, between the second radial direction magnetic bearing 72 and the second auxiliary bearing 92
Two displacement sensors 112 are respectively used to positional shift situation of 1 both ends of real-time monitoring armature spindle on three degree of freedom, i.e., and
One end that one displacement sensor 111 is used to monitor in real time armature spindle 1 changes in the freedom degree of Z-direction, the direction X1 and the direction Y1, the
Two displacement sensors 112 are used to monitor in real time 1 other end of armature spindle to be changed in the freedom degree of Z-direction, the direction X2 and the direction Y2.
For outer rotor magnetic suspension motor of the invention before work, it is auxiliary that armature spindle 1 is parked in the first auxiliary bearing 91 and second
It helps on bearing 92；It when the outer rotor magnetic suspension motor being needed to work, powers to magnetic bearing group 7, enables armature spindle 1 in the first radial magnetic
It suspends under the magnetic fields of bearing 71, the second radial direction magnetic bearing 72 and axial magnetic bearing 73, then powers to electrical-coil 5,
Under the magnetic fields that electrical-coil 5 and permanent magnet 6 generate, the rotation fortune of armature spindle 1 is driven by the rotation of driving outer rotor magnetic yoke 2
Row.By controlling the parameter of frequency converter and motor, the number of magnetic pole pairs of the permanent magnet 6 especially on magnetic suspension motor can be effective
Control the running speed of magnetic suspension motor.
In the process of running, the first radial direction magnetic bearing 71 and the first displacement sensor 111 cooperate, control armature spindle 1 X1,
The freedom degree in the direction Y1；Second radial direction magnetic bearing 72 cooperates with second displacement sensor 112, controls armature spindle 1 in the direction X2, Y2
Freedom degree；Axial magnetic bearing 73 and the first displacement sensor 111, second displacement sensor 112 cooperate, and control armature spindle 1 in Z
The freedom degree of axis direction.Under the collective effect of the first radial direction magnetic bearing 71, the second radial direction magnetic bearing 72 and axial magnetic bearing 73,
Freedom degree control of the armature spindle 1 on five directions is completed, and by the first displacement sensor 111 and second displacement sensor 112
Real-time monitoring, it is ensured that the runnability of armature spindle 1.
In outer rotor magnetic suspension motor structure of the invention, stator frame 3 is ring structure, and in the outer of stator frame 3
All middle parts are provided with annular groove 30, and stator core 4 is fixed in annular groove 30.The ring structure of stator frame 3, middle part are used for
Match with armature spindle 1 and fixed stator core 4, both ends are then used to fix the components such as magnetic bearing group 7, displacement sensor 11.
In the present embodiment, stator frame 3 is split type structure, including first annular bracket 31 and the second ring support 32,
First annular bracket 31 is fixedly connected with the second ring support 32.As shown in Figure 1, the section of first annular bracket 31 is Z-type knot
Structure, 4 interference of stator core are fitted on the inner ring periphery of first annular bracket 31；The inner ring end and second of first annular bracket 31
The end of ring support 32 is fixedly connected.
It should be pointed out that outer rotor magnetic suspension motor of the invention can be applied to outer rotor magnetic suspension shaft flow fan or
Outer rotor magnetic suspension centrifugal blower.Fig. 3 is a kind of structural schematic diagram of outer rotor magnetic suspension shaft flow fan, and Fig. 4 is the B-B of Fig. 3
Cross-sectional view, wherein the outer rotor magnetic suspension shaft flow fan further includes casing 12, is uniformly arranged in the outer surface of outer rotor rim 2
There are several impellers 13, impeller 13 can be two-dimensional current impeller or three-dimensional flow impeller.Fig. 5 is then a kind of outer rotor magnetic suspension centrifugation wind
The structural schematic diagram of machine, Fig. 6 are the C-C cross-sectional view of Fig. 5.
Descriptions above can combine implementation individually or in various ways, and these variants all exist
Within protection scope of the present invention.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence " including one ... ", it is not excluded that wrapping
Include in the process, method, article or equipment of the element that there is also other identical elements.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of outer rotor magnetic suspension motor, which is characterized in that the outer rotor magnetic suspension motor includes armature spindle (1), outer turn
Sub- magnetic yoke (2), stator frame (3), stator core (4), electrical-coil (5), permanent magnet (6) and magnetic bearing group (7), wherein described outer
Rotor rim (2) is set on the armature spindle (1), and the stator frame (3) is set in the middle part of the armature spindle (1), described
Stator core (4) is embedded in the outer ring of the stator frame (3), outer ring of electrical-coil (5) setting in the stator core (4)
On, the permanent magnet (6) is fixed on the inner surface of the outer rotor magnetic yoke (2) and is oppositely arranged with the electrical-coil (5)；
The magnetic bearing group (7) is set on the armature spindle (1), for controlling the armature spindle (1) in the freedom degree in five directions.
2. outer rotor magnetic suspension motor as described in claim 1, which is characterized in that the magnetic bearing group (7) includes the first diameter
To magnetic bearing (71), the second radial direction magnetic bearing (72) and axial magnetic bearing (73), the freedom degree in five directions includes: described
The axial freedom of armature spindle (1) and the direction X1 perpendicular to the armature spindle (1) axial direction, the direction Y1, the direction X2 and the side Y2
To freedom degree, wherein the direction X1 is perpendicular to the direction Y1, and the direction X2 is perpendicular to the direction Y2；
The axial magnetic bearing (73) is set in one end of the armature spindle (1), for controlling the axial direction of the armature spindle (1) certainly
By spending；
First radial direction magnetic bearing (71) and second radial direction magnetic bearing (72) be set in the armature spindle (1) middle part,
And it is located at the two sides of the stator core (4)；First radial direction magnetic bearing (71) is for controlling the armature spindle (1) in institute
The freedom degree in the direction X1 and the direction Y1 is stated, second radial direction magnetic bearing (72) is for controlling the armature spindle (1) in institute
State the freedom degree in the direction X2 and the direction Y2.
3. outer rotor magnetic suspension motor as claimed in claim 2, which is characterized in that the outer rotor magnetic suspension motor further includes
Thrust disc (8), the thrust disc (8) are fixed on one end of the armature spindle (1), and the axial magnetic bearing (73) is set in described
On the outer ring of thrust disc (8).
4. outer rotor magnetic suspension motor as described in claim 1, which is characterized in that the outer rotor magnetic suspension motor further includes
It is set in the auxiliary bearing group of the armature spindle (1) end, to when the outer rotor magnetic suspension motor does not work, to described
Armature spindle (1) load-bearing.
5. outer rotor magnetic suspension motor as claimed in claim 4, which is characterized in that the auxiliary bearing group includes the first auxiliary
Bearing (91) and the second auxiliary bearing (92), first auxiliary bearing (91) and second auxiliary bearing (92) are arranged respectively
At the both ends of the armature spindle (1).
6. outer rotor magnetic suspension motor as described in claim 1, which is characterized in that the outer rotor magnetic suspension motor further includes
Dustproof cover (10), the dustproof cover (10) are set in the end of the armature spindle (1), are located at the outside of the magnetic bearing group (7).
7. outer rotor magnetic suspension motor as described in claim 1, which is characterized in that the outer rotor magnetic suspension motor further includes
Displacement sensor (11), institute's displacement sensors (11) are fixed on the stator frame (3) by sensor stand and around institutes
State armature spindle (1) setting.
8. outer rotor magnetic suspension motor as described in claim 1, which is characterized in that the stator frame (3) is ring structure, and
It is provided with annular groove (30) in the middle part of the periphery of the stator frame (3), the stator core (4) is fixed on the annular groove (30)
It is interior.
9. outer rotor magnetic suspension motor as described in claim 1, which is characterized in that the stator frame (3) is split type structure,
Including first annular bracket (31) and the second ring support (32), the first annular bracket (31) and second ring support
(32) it is fixedly connected.
10. outer rotor magnetic suspension motor as described in claim 1, which is characterized in that the outer rotor magnetic suspension motor application
In outer rotor magnetic suspension shaft flow fan or outer rotor magnetic suspension centrifugal blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910587475.8A CN110266168A (en) | 2019-07-02 | 2019-07-02 | A kind of outer rotor magnetic suspension motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910587475.8A CN110266168A (en) | 2019-07-02 | 2019-07-02 | A kind of outer rotor magnetic suspension motor |
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| CN110266168A true CN110266168A (en) | 2019-09-20 |
Family
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| CN201910587475.8A Pending CN110266168A (en) | 2019-07-02 | 2019-07-02 | A kind of outer rotor magnetic suspension motor |
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Application publication date: 20190920 |