CN206918077U - Axial magnetic suspension bearing, magnetic suspension system and compressor - Google Patents
Axial magnetic suspension bearing, magnetic suspension system and compressor Download PDFInfo
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- CN206918077U CN206918077U CN201720680191.XU CN201720680191U CN206918077U CN 206918077 U CN206918077 U CN 206918077U CN 201720680191 U CN201720680191 U CN 201720680191U CN 206918077 U CN206918077 U CN 206918077U
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- bearing
- protection
- magnetic suspension
- axial magnetic
- iron core
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Abstract
The utility model is on a kind of axial magnetic suspension bearing, magnetic suspension system and compressor, and main purpose is solve the defects of existing axial magnetic suspension bearing can only provide magnetic suspension system axially protection.The technical scheme mainly used for：Axial magnetic suspension bearing, including stator, rotor and the first protection structure；First protection structure includes the first stopper section and the second stopper section；First stopper section is arranged on stator, and the second stopper section is arranged on rotor；Both first stopper section and the second stopper section are relative on axially and radially, and both have and are used to provide axial magnetic suspension bearing in the first gap axially protected and diametrically have the second gap for being used for the part offer radial protection to being set in rotating shaft in the axial direction.Wherein, axially protection can be both provided magnetic suspension system by the first gap of setting and the second gap, radial protection can also be provided, the extra space that radial protection is set can also be saved, improve design margin.
Description
Technical field
Magnetic levitation technology field is the utility model is related to, more particularly to a kind of axial magnetic suspension bearing, magnetic suspension system
And compressor.
Background technology
In general, existing axial magnetic suspension bearing protection structure form is as shown in figure 1, including front axle to iron core 1 ', front axle
To bearing control coil 2 ', preceding protection bearing 3 ', thrust disc 4 ', rear protection bearing 5 ', rear axial bearing control coil 6 ', rear axle
To bearing iron core 7 ', optical axis 8 '.Axial magnetic suspension bearing protection device protects right side and the thrust disc of bearing 3 ' before being mainly
4 ' left side, the right side of thrust disc 4 ' and the left side of rear protection bearing 5 ' form spacing gap, preceding cod iron core
1 ', the working clearance of axial magnetic suspension bearing is formed between thrust disc 4 ', the rear three of cod iron core 7 ', wherein, spacing
Gap is less than the working clearance.When thrust disc rotary work, the left side of thrust disc 4 ' and the right side of preceding protection bearing 3 ' occur
CONTACT WITH FRICTION occurs for CONTACT WITH FRICTION, the right side of thrust disc 4 ' and the left side of rear protection bearing 5 ', so as to play protection front axle
To iron core 1 ' and rear cod iron core 7 ', it is allowed to not occur to rub and ablation, damage with thrust disc 4 '.The axial magnetic suspension axle
Protection structure of accepting insurance can only provide axial protection, to realize that the radial protection of magnetic suspension system also needs to additionally set radial protection knot
Structure.However, typically it is arranged in the prior art by axial protection structure and the radial protection structure of magnetic suspension system is spaced apart
It is so higher to the design space demand of magnetic suspension system on optical axis 8 ', add magnetic suspension system global design difficulty.
Utility model content
In view of this, the utility model provides a kind of axial magnetic suspension bearing, magnetic suspension system and compressor, main purpose
It is solve the defects of existing axial magnetic suspension bearing can only provide magnetic suspension system axially protection.
To reach above-mentioned purpose, the utility model mainly provides following technical scheme：
Embodiment of the present utility model provides a kind of axial magnetic suspension bearing, for being used cooperatively with rotating shaft, the axial direction
Magnetic suspension bearing includes stator, rotor and the first protection structure；First protection structure is stopped including the first stopper section and second
Stopper；
First stopper section is arranged on the stator, and second stopper section is arranged on the rotor；Described
Have between one stopper section and second stopper section on the axial direction and be used to provide axially the axial magnetic suspension bearing
First gap H1 of protection and diametrically having is used to providing the part that is set in the rotating shaft the of radial protection
Two gap H2.
The purpose of this utility model and solve its technical problem and can also be applied to the following technical measures to achieve further.
In foregoing axial magnetic suspension bearing, optionally, the rotor includes thrust disc, and the stator includes bearing iron
Core, the quantity of the bearing iron core are two and are distributed in the both sides of the thrust disc；
Wherein, the first described protection structure is provided between the thrust disc and at least one bearing iron core.
In foregoing axial magnetic suspension bearing, optionally, first stopper section includes the first protection bearing, and described the
One protection bearing is regularly set in the axis hole of a bearing iron core；
Second stopper section includes hierarchic structure, and the hierarchic structure is arranged on the first side of the thrust disc, described
First side of thrust disc is relative with one bearing iron core, the hierarchic structure include along first face radially extended and
Along the second axially extending face；
Wherein, first face is relative with the end face of the first end of the described first protection bearing and is formed therebetween
The first described gap, the first end are one end of the close thrust disc of the described first protection bearing；It is and/or described
Second face is relative with the shaft hole inner wall of the described first protection bearing and forms the second described gap therebetween.
In foregoing axial magnetic suspension bearing, optionally, the axis hole of one bearing iron core is close to the thrust
One end of disk is provided with the first enlarging groove annular in shape, and the first protection bearing is set in the first enlarging groove and described
First end protrudes from the first enlarging groove.
In foregoing axial magnetic suspension bearing, optionally, the first side of the thrust disc has and one bearing
Iron core is relative and forms the 3rd face of working clearance therebetween；
Wherein, the hierarchic structure is along described axially projecting in the 3rd face.
In foregoing axial magnetic suspension bearing, optionally, the axis hole of a bearing iron core is close to the thrust disc
One end is provided with the second enlarging groove annular in shape, and first stopper section includes the second described enlarging groove；
Second stopper section includes protection ring, and the protection ring is arranged on the first side of the thrust disc, the thrust
First side of disk is relative with one bearing iron core；
Wherein, the bottom surface of the end face of one end opposite with thrust disc of the protection ring and the second enlarging groove it is relative and
The first described gap is formed therebetween；And/or the side of the protection ring and the side phase of the second enlarging groove
To and form the second described gap therebetween.
In foregoing axial magnetic suspension bearing, optionally, the protection ring is made up of high-abrasive material.
On the other hand, embodiment of the present utility model also provides a kind of magnetic suspension system, and it is included described in any of the above-described kind
Axial magnetic suspension bearing.
In foregoing magnetic suspension system, optionally, magnetic suspension system also includes being used for being set in the rotating shaft
Part provides the second protection structure of radial protection.
In foregoing magnetic suspension system, optionally, magnetic suspension system also includes being arranged on the axial magnetic suspension bearing
The axial magnetic device of side；
Second protection structure is arranged on the axial magnetic device
In foregoing magnetic suspension system, optionally, the axial magnetic device includes radial magnetic bearing and axle
Hold housing；
The bear box has axis hole, and one end of the axis hole of the bear box is provided with the 3rd enlarging groove annular in shape,
The radial magnetic bearing is set in the 3rd enlarging groove；
Second protection structure includes the second protection bearing, and the second protection bearing is set in the bear box
In axis hole；
The rotating shaft through described second protection bearing axis hole and with described second protection bearing axis hole inwall it
Between form third space, the third space is used to provide radial protection to the part being set in the rotating shaft.
On the other hand, embodiment of the present utility model also provides a kind of compressor, and it includes the magnetic described in any of the above-described kind
Suspension system.
By above-mentioned technical proposal, the utility model axial magnetic suspension bearing, magnetic suspension system and compressor at least have
Following beneficial effect：
In technical scheme provided by the utility model, due to having in the axial direction between the first stopper section and the second stopper section
Have and be used for for providing axial magnetic suspension bearing the first gap axially protected and diametrically having to being set in rotating shaft
On part the second gap of radial protection is provided, so as to both can be to magnetic suspension by the first gap of setting and the second gap
System provides axially protection, can also provide radial protection, make the practicality of the utility model axial magnetic suspension bearing strengthen；Separately
Outside, the extra space that radial protection is set can also be saved, improves design margin.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of specification, with preferred embodiment of the present utility model and coordinate accompanying drawing detailed below
Describe in detail bright as after.
Brief description of the drawings
Fig. 1 is a kind of axial magnetic suspension bearing of the prior art and the structural representation of rotating shaft assembling；
Fig. 2 is a kind of axial magnetic suspension bearing and the structural representation of rotating shaft assembling that an embodiment of the present utility model provides
Figure；
Fig. 3 is the mplifying structure schematic diagram at A in Fig. 2；
Fig. 4 is that the structure that another axial magnetic suspension bearing that an embodiment of the present utility model provides assembles with rotating shaft is shown
It is intended to；
Fig. 5 is the mplifying structure schematic diagram at B in Fig. 4；
Fig. 6 is a kind of structural representation for magnetic suspension system that an embodiment of the present utility model provides；
Fig. 7 is the structural representation for another magnetic suspension system that an embodiment of the present utility model provides.
Reference：1st, stator；10th, axial magnetic suspension bearing；11st, preceding cod iron core；100th, magnetic suspension system；
111st, the first enlarging groove；112nd, the second enlarging groove；12nd, rear cod iron core；2nd, rotor；20th, rotating shaft；21st, thrust disc；211、
3rd face；3rd, the first protection structure；30th, axial magnetic device；31st, the first stopper section；311st, the first protection bearing；3111、
First end；3112nd, the shaft hole inner wall of the first protection bearing；32nd, the second stopper section；321st, hierarchic structure；3211st, the first face；
3212nd, the second face；322nd, protection ring；3221st, the end face of one end opposite with thrust disc of protection ring；3222nd, the side of protection ring；
4th, radial magnetic bearing；5th, bear box；51st, the axis hole of bear box；511st, the 3rd enlarging groove；6th, the second protection bearing；
7th, bearing plate；8th, front axle is to bearing control coil；9th, rear axial bearing control coil.
Embodiment
Further to illustrate that the utility model is to reach the technological means and effect that predetermined purpose of utility model taken,
Below in conjunction with accompanying drawing and preferred embodiment, to embodiment, structure, feature and its work(according to the present utility model application
Effect, describe in detail as after.In the following description, what different " embodiment " or " embodiment " referred to is not necessarily same implementation
Example.In addition, the special characteristic, structure or feature in one or more embodiments can be combined by any suitable form.
As shown in Figure 2 and Figure 4, a kind of axial magnetic suspension bearing 10 that one embodiment of the present utility model proposes, the axle
It is used to be used cooperatively with rotating shaft 20 to magnetic suspension bearing 10.Specifically, the axial magnetic suspension bearing 10 is used to be set in rotating shaft 20
On.Axial magnetic suspension bearing 10 of the present utility model includes stator 1, the protection structure 3 of rotor 2 and first.First protection structure 3
Including the first stopper section 31 and the second stopper section 32.
First stopper section 31 is set on the stator 1, and the second stopper section 32 is arranged on rotor 2.First stopper section 31 and
Have in the axial direction between two stopper sections 32 be used to providing axial magnetic suspension bearing 10 the first gap H1 for axially protecting and
Diametrically have and be used to provide the second gap H2 of radial protection (such as Fig. 3 and Fig. 5 institutes to the part being set in rotating shaft 20
Show).Need exist for explanation be：" part " herein is not only set in rotating shaft 20, and has gap between rotating shaft 20,
For example the part can be stator of the stator 1 of bearing magnetic suspension bearing, radial magnetic bearing or motor etc..
Wherein, due to the first gap H1 be for providing axial magnetic suspension bearing 10 gap axially protected, therefore this
One gap H1 is less than the working clearance H of axial magnetic suspension bearing 10.Likewise, because the second gap H2 is for being set in
Part in rotating shaft 20 provides the gap of radial protection, therefore between second gap H2 is less than between above-mentioned part and rotating shaft 20
Gap.When above-mentioned part is multiple, for example the second gap H2 will be stator 1, the radial direction magnetcisuspension of bearing magnetic suspension bearing simultaneously
When floating axle is held and the stator of motor provides protection, then the second gap H2 is less than between these all parts and rotating shaft 20
Gap.
, both can be to magnetic suspension by the first gap H1 and the second gap H2 of setting in the technical scheme of above-mentioned offer
System provides axially protection, can also provide radial protection, make the practicality of the utility model axial magnetic suspension bearing 10 strengthen；
Furthermore it is also possible to save the extra space for setting radial protection, design margin is improved.
As shown in Figure 3 and Figure 5, above-mentioned rotor 2 can include thrust disc 21.Stator 1 can include bearing iron core.Axle
The quantity of iron core is held as two and is distributed in the both sides of thrust disc 21.Wherein, between thrust disc 21 and at least one bearing iron core
Provided with the first foregoing protection structure 3.Preferably, the first foregoing protection is equipped between thrust disc 21 and two bearing iron cores
Structure 3.
Two above-mentioned bearing iron cores can be respectively preceding cod iron core 11 and rear cod iron core 12.Wherein,
The first foregoing protection structure 3 is provided between thrust disc 21 and preceding cod iron core 11 and/or rear cod iron core 12.
In order to form foregoing the first gap H1 and the second gap H2, embodiment of the present utility model can use following
Scheme：In one example, as shown in figure 3, the first foregoing stopper section 31 includes the first protection bearing 311, the first protection axle
311 are held regularly to be set in the axis hole of a bearing iron core.One bearing iron core is preceding cod iron core 11 or rear axle
To bearing iron core 12.
In order to facilitate description, have below between thrust disc 21 and preceding cod iron core 11 provided with the first protection structure 3
Body illustrates：In the first example, as shown in figure 3, the first protection bearing 311 is set in the axis hole of preceding cod iron core 11
It is interior.Second stopper section 32 includes hierarchic structure 321, and hierarchic structure 321 is arranged on the first side of thrust disc 21.Thrust disc 21
First side is relative with above-mentioned preceding cod iron core 11.Hierarchic structure 321 includes the first face 3211 and edge radially extended
The second axially extending face 3212." radial direction " herein refers to the radial direction of magnetic suspension bearing 10 vertically, likewise, herein
" axial direction " refers to the axial direction of magnetic suspension bearing 10 vertically.
Wherein, the first face 3211 can be relative with the end face of the first end 3111 of the first protection bearing 311 and at both
Between form the first foregoing gap H1.First end 3111 is one end of the close thrust disc 21 of the first protection bearing 311.
Can be relative with the shaft hole inner wall 3112 of the first protection bearing 311 and before being formed therebetween in the second face 3212
The the second gap H2 stated.
In the examples described above, foregoing first may make up by the cooperation of the first protection bearing 311 and hierarchic structure 321
Gap H1 and the second gap H2, its structure is relatively simple, realizes more convenient.
Further, as shown in figure 3, the axis hole of foregoing preceding cod iron core 11 is provided with one end close to thrust disc 21
First enlarging groove 111 annular in shape.First protection bearing 311 is set in the first enlarging groove 111 and first end 3111 is convex
For the first enlarging groove 111, to protect the preceding cod iron core 11, it is allowed to not be in contact with thrust disc 21.
Further, as shown in figure 3, the first side of foregoing thrust disc 21 has and the above-mentioned preceding phase of cod iron core 11
To and therebetween formed working clearance H the 3rd face 211.Wherein, foregoing hierarchic structure 321 magnetic suspension shaft vertically
Hold 10 it is axially projecting in the 3rd face 211, to provide protection to thrust disc 21, thrust disc 21 is not connect with a bearing iron core
Touch.
Need exist for explanation be：As shown in Fig. 2 also with can be between foregoing thrust disc 21 and rear cod iron core 12
The first foregoing protection structure 3 is set.Its specific structure and implementation may refer to thrust disc 21 in above-mentioned first example
The corresponding description of first protection structure 3, specifically will not be repeated here between preceding cod iron core 11.
In order to form foregoing the first gap H1 and the second gap H2, implementation of the present utility model can use following side
Case：In another example, as shown in Figure 4 and Figure 5, the axis hole of a bearing iron core is in ring being provided with close to one end of thrust disc 21
Second enlarging groove 112 of shape.One bearing iron core is preceding cod iron core 11 or rear cod iron core 12.Foregoing
One stopper section 31 includes the second enlarging groove 112.
In order to facilitate description, have below between thrust disc 21 and preceding cod iron core 11 provided with the first protection structure 3
Body illustrates：In the second example, as shown in figure 5, the axis hole of preceding cod iron core 11 is close to one end of thrust disc 21
Provided with the second enlarging groove 112 annular in shape.The second foregoing stopper section 32 includes protection ring 322, and protection ring 322, which is arranged on, to be pushed away
First side of power disk 21, the first side of thrust disc 21 are relative with the preceding cod iron core 11.
Wherein, protection ring 322 can be with the bottom surface of the second enlarging groove 112 with the end face 3221 of 21 opposite one end of thrust disc
Form relatively and therebetween the first foregoing gap H1.
Can be relative with the side of the second enlarging groove 112 and be formed therebetween foregoing in the side 3222 of protection ring 322
The second gap H2.Need exist for explanation be：Because protection ring 322 is annular in shape, the side 3222 of protection ring 322 refers to protect
The external cylindrical surface of ring 322.
In above-mentioned second example, foregoing first may make up by the cooperation of the second enlarging groove 112 and protection ring 322
Gap H1 and the second gap H2, its structure is relatively simple, realizes more convenient.
Further, foregoing protection ring 322 can be made up of high-abrasive materials such as graphite or babbits, to improve protection
The service life of ring 322.
Need exist for explanation be：As shown in figure 4, also with can be between foregoing thrust disc 21 and rear cod iron core 12
The first foregoing protection structure 3 is set.Its specific structure and implementation may refer to thrust disc 21 in above-mentioned second example
The corresponding description of first protection structure 3, specifically will not be repeated here between preceding cod iron core 11.
On the other hand, as shown in Figure 6 and Figure 7, embodiment of the present utility model also provides a kind of magnetic suspension system 100, its
Including the axial magnetic suspension bearing 10 in any of the above-described example.Due to setting the reason of aforementioned axial magnetic suspension bearing 10, it was both
Protection can be provided to axially providing protection to radial direction again；Furthermore it is also possible to save the extra sky that radial protection is set
Between, improve design margin.
Further, as shown in Figure 6 and Figure 7, magnetic suspension system 100 of the present utility model also includes being used to turn to being set in
Part on axle 20 provides the second protection structure of radial protection.Second protection structure is matched somebody with somebody with the first foregoing protection structure 3
Close, realize the double-deck radial protection at high-mechanic end, improve the reliability of the utility model magnetic suspension system 100.
Further, as shown in Figure 6 and Figure 7, magnetic suspension system 100 of the present utility model also includes being arranged on axial magnetcisuspension
Floating axle holds the axial magnetic device 30 of 10 sides.The second foregoing protection structure is arranged on the axial magnetic device 30.
Preferably, foregoing axial magnetic device 30 can include radial magnetic bearing 4 and bear box 5.Bearing
Housing 5 has axis hole 51.One end of the axis hole 51 of bear box 5 is provided with the 3rd enlarging groove 511 annular in shape.Foregoing radial direction magnetic
Suspension bearing 4 is set in the 3rd enlarging groove 511.The second foregoing protection structure includes the second protection bearing 6, the second protection
Bearing 6 is set in the axis hole 51 of bear box 5.Foregoing rotating shaft 20 is protected through the second axis hole for protecting bearing 6 and with second
Formation third space H3, third space H3 to the part being set in rotating shaft 20 for carrying between protecting the inwall of the axis hole of bearing 6
For radial protection.Specifically, third space H3 is less than the working clearance H4 of radial magnetic bearing 4.
Further, as shown in Figure 6 and Figure 7, the quantity of foregoing second protection bearing 6 can be at least two, to improve
The reliability of radial protection.
As shown in Figure 6 and Figure 7, foregoing axial magnetic device 30 can also include bearing plate 7, and bearing plate 7 is used
In compressing the second protection bearing 6, to prevent the second protection bearing 6 from being released out of bear box 5 axis hole 51.
In one is specifically applied example, the quantity of foregoing axial magnetic device 30 is two, each radial direction magnetcisuspension
The second foregoing protection structure is equipped with floating device 30.
On the other hand, embodiment of the present utility model also provides a kind of compressor, and it is included in any of the above-described embodiment
Magnetic suspension system 100.Due to setting the reason of above-mentioned magnetic suspension system 100, because magnetic suspension system 100 includes above-mentioned axial direction
Magnetic suspension bearing 10, it both can provide protection to radial direction again to axially providing protection；Furthermore it is also possible to save extra
The space of radial protection is set, improves design margin.
Operation principle of the present utility model and preferred embodiment is described below.
In the first embodiment, as shown in Figures 2 and 3, a kind of magnetic suspension system 100, applied in magnetic levitation product, wrap
Cod iron core 11 before including, front axle are to bearing control coil 8, preceding protection bearing (i.e. first protects bearing 311), thrust disc
21st, bearing (the i.e. first protection bearing 311), rear axial bearing control coil 9, rear cod iron core 12, rotating shaft 20 are protected afterwards.
Wherein, rotating shaft 20 can be optical axis etc..When axial magnetic suspension bearing 10 works in the utility model, preceding cod iron core 11,
The axial running clearance of axial magnetic suspension bearing 10 is formed between thrust disc 21, the rear three of cod iron core 12, there is provided axially
Magnetic suspension bearing 10 works required magnetic pull.Preceding protection bearing, bearing, the axial direction of the step surface of thrust disc 21 is protected to be formed afterwards
Axial portable protective gaps, i.e., the first foregoing gap H1, the first gap H1 requirement are less than axial running clearance H, so as to play to axle
Axial protective effect to magnetic suspension bearing 10.It can be formed radially between rotating shaft 20 and each part when magnetic suspension system 100 assembles
Gap, preceding protection bearing, the radial direction formation radial protection gap for protecting bearing, the step surface of thrust disc 21 afterwards are that is, foregoing
Second gap H2, so as to play a part of to the radial protection of magnetic suspension system 100.Thrust disc 21 is changed in the utility model
Structure, axial magnetic suspension bearing 10 is set to realize the radial protection to magnetic suspension system 100, section while providing and axially protecting
The extra space that radial protection is set is saved, improves design margin.
In a second embodiment, as shown in Figure 4 and Figure 5, a kind of magnetic suspension system 100, applied in magnetic levitation product, wrap
Preceding cod iron core 11, front axle are included to bearing control coil 8, front axle to protection ring 322, thrust disc 21, rear axial protection ring
322nd, rear axial bearing control coil 9, rear cod iron core 12, rotating shaft 20.Wherein, rotating shaft 20 can be optical axis etc..The reality
When being worked with new middle axial magnetic suspension bearing 10, preceding cod iron core 11, thrust disc 21, the rear three of cod iron core 12
Between form working clearance of axial magnetic suspension bearing 10, there is provided axial magnetic suspension bearing 10 works required magnetic pull.Front axle to
The axial direction of protection ring 322 and preceding cod iron core 11, rear axial protection ring 322 and rear cod iron core 12 is formed
The axial portable protective gaps of axial magnetic suspension bearing 10, i.e., the first foregoing gap H1, the first gap H1 requirement are less than the working clearance
H, so as to play the axial protective effect to axial magnetic suspension bearing 10.Rotating shaft 20 and each part when magnetic suspension system 100 assembles
Between can form radial clearance, front axle to protection ring 322 and preceding cod iron core 11, rear axial protection ring 322 with it is rear axially
The radial direction of bearing iron core 12 forms radial protection gap, i.e., the second foregoing gap H2, so as to play to magnetic suspension system
The effect of 100 radial protections.Axle is added on rotor 2 in the utility model to protection ring 322, axle is to protection
Ring 322 makes axial magnetic suspension bearing 10 real while axially protection is provided using high-abrasive material such as graphite or babbit etc.
The radial protection to magnetic suspension system 100 is showed, has saved the extra space that radial protection is set, improve design margin.
In the third embodiment, as shown in fig. 6, a kind of magnetic suspension system 100, applied in magnetic levitation product, including it is preceding
Cod iron core 11, front axle to bearing control coil 8, preceding protection bearing (i.e. first protect bearing 311), thrust disc 21, after
Protect bearing (i.e. first protect bearing 311), rear axial bearing control coil 9, rear cod iron core 12, rotating shaft 20 and
Foregoing axial magnetic device 30.Axial magnetic suspension bearing 10 in the present embodiment and the axial magnetic in above-mentioned first embodiment
The structure of suspension bearing 10 and principle all same, but also use the foregoing axial magnetic device with the second protection structure
30, it cooperatively forms two level radial protection with axial magnetic suspension bearing 10, realizes the double-deck radial protection at high-mechanic end, improves
The reliability of magnetic suspension system 100.
In the fourth embodiment, as shown in fig. 7, a kind of magnetic suspension system 100, applied in magnetic levitation product, including it is preceding
Cod iron core 11, front axle to bearing control coil 8, front axle to protection ring 322, thrust disc 21, rear axial protection ring 322,
Axial bearing control coil 9, rear cod iron core 12, rotating shaft 20 and foregoing axial magnetic device 30 afterwards.This implementation
The structure and principle all same of axial magnetic suspension bearing 10 and the axial magnetic suspension bearing 10 in above-mentioned second embodiment in example,
But also the foregoing axial magnetic device 30 with the second protection structure is used, it is cooperatively formed with axial magnetic suspension bearing 10
Two level radial protection, the double-deck radial protection at high-mechanic end is realized, improve the reliability of magnetic suspension system 100.
Embodiment more than, axial magnetic suspension bearing 10, magnetic suspension system 100 and compressor of the present utility model are extremely
There are following advantages less：
In general, magnetic suspension application product are ultrahigh speed machine.Magnetic suspension bearing is its key components and parts, once magnetcisuspension
Floating system 100 breaks down, and magnetic levitation product will be unable to start and suspend, can not normal operation, cause production loss.Thus setting
Corresponding protection component can be designed when counting magnetic suspension bearing to magnetic suspension bearing.Axial magnetic suspension bearing 10 of the present utility model can
To realize the radial and axial protection to magnetic suspension system 100 simultaneously, the extra space that radial protection is set is saved, improves design
Surplus.Or coordinate other radial protection devices, the double-deck radial protection at high-mechanic end is realized, improves magnetic suspension system 100
Reliability.
Need exist for explanation be：In the case where not conflicting, those skilled in the art can incite somebody to action according to actual conditions
Related technical characteristic is mutually combined in above-mentioned each example, to reach corresponding technique effect, particularly for various combined situations
Do not repeat one by one herein.
It is described above, only it is preferred embodiment of the present utility model, not the utility model is made any formal
Limitation, any simple modification, equivalent change and modification made to above example according to the technical essence of the utility model,
In the range of still falling within technical solutions of the utility model.
Claims (12)
1. a kind of axial magnetic suspension bearing, for being used cooperatively with rotating shaft (20), the axial magnetic suspension bearing includes stator
(1), rotor (2) and the first protection structure (3)；Characterized in that, first protection structure (3) includes the first stopper section (31)
With the second stopper section (32)；
First stopper section (31) is arranged on the stator (1), and second stopper section (32) is arranged on the rotor (2)
On；Have between first stopper section (31) and second stopper section (32) on the axial direction and be used for the axial magnetic
Suspension bearing, which provides the first gap H1 axially protected and diametrically had, to be used for being set in the rotating shaft (20)
Part provides the second gap H2 of radial protection.
2. axial magnetic suspension bearing as claimed in claim 1, it is characterised in that
The rotor (2) includes thrust disc (21), and the stator (1) includes bearing iron core, and the quantity of the bearing iron core is two
Both sides that are individual and being distributed in the thrust disc (21)；
Wherein, described the first protection structure (3) is provided between the thrust disc (21) and at least one bearing iron core.
3. axial magnetic suspension bearing as claimed in claim 2, it is characterised in that
First stopper section (31) includes the first protection bearing (311), and the first protection bearing (311) is regularly set in
In the axis hole of one bearing iron core；
Second stopper section (32) includes hierarchic structure (321), and the hierarchic structure (321) is arranged on the thrust disc (21)
The first side, the first side of the thrust disc (21) is relative with one bearing iron core, and the hierarchic structure (321) includes edge
First face (3211) radially extended and along axially extending second face (3212)；
Wherein, first face (3211) with described first protection bearing (311) first end (3111) end face it is relative and
The first described gap H1 is formed between the two, and the first end (3111) is the described first close institute for protecting bearing (311)
State one end of thrust disc (21)；And/or second face (3212) and the shaft hole inner wall phase of the described first protection bearing (311)
To and form the second described gap H2 therebetween.
4. axial magnetic suspension bearing as claimed in claim 3, it is characterised in that
The axis hole of one bearing iron core is being provided with the first enlarging groove annular in shape close to one end of the thrust disc (21)
(111), the first protection bearing (311) is set in the first enlarging groove (111) and the first end (3111) is protruded
In the first enlarging groove (111).
5. the axial magnetic suspension bearing as described in claim 3 or 4, it is characterised in that
First side of the thrust disc (21) has relative with one bearing iron core and forms the working clearance therebetween
The 3rd face (211)；
Wherein, the hierarchic structure (321) is along described axially projecting in the 3rd face (211).
6. axial magnetic suspension bearing as claimed in claim 2, it is characterised in that
The axis hole of one bearing iron core is being provided with the second enlarging groove (112) annular in shape close to one end of the thrust disc (21),
First stopper section (31) includes the second described enlarging groove (112)；
Second stopper section (32) includes protection ring (322), and the protection ring (322) is arranged on the of the thrust disc (21)
Side, the first side of the thrust disc (21) are relative with one bearing iron core；
Wherein, the end face (3221) of one end opposite with thrust disc (21) of the protection ring (322) and the second enlarging groove
(112) bottom surface is relative and forms the first described gap H1 therebetween；And/or the side of the protection ring (322)
(3222) it is relative with the side of the second enlarging groove (112) and form the second described gap H2 therebetween.
7. axial magnetic suspension bearing as claimed in claim 6, it is characterised in that
The protection ring (322) is made up of high-abrasive material.
8. a kind of magnetic suspension system, it is characterised in that including the axial magnetic suspension bearing any one of claim 1 to 7.
9. magnetic suspension system as claimed in claim 8, it is characterised in that also include being used for being set in the rotating shaft (20)
Part provide radial protection the second protection structure.
10. magnetic suspension system as claimed in claim 9, it is characterised in that also include being arranged on the axial magnetic suspension bearing
The axial magnetic device (30) of side；
Second protection structure is arranged on the axial magnetic device (30).
11. magnetic suspension system as claimed in claim 10, it is characterised in that
The axial magnetic device (30) includes radial magnetic bearing (4) and bear box (5)；
The bear box (5) has an axis hole (51), and one end of the axis hole (51) of the bear box (5) is provided with annular in shape the
Three enlarging grooves (511), the radial magnetic bearing (4) are set in the 3rd enlarging groove (511)；
Second protection structure includes the second protection bearing (6), and the second protection bearing (6) is set in the bear box
(5) in axis hole (51)；
The rotating shaft (20) through the described second protection bearing (6) axis hole and with the axis hole of the described second protection bearing (6)
Third space H3, the third space H3 are formed between inwall the part offer radial direction to being set in the rotating shaft (20) is provided
Protection.
12. a kind of compressor, it is characterised in that including the magnetic suspension system any one of claim 8 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720680191.XU CN206918077U (en) | 2017-06-12 | 2017-06-12 | Axial magnetic suspension bearing, magnetic suspension system and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720680191.XU CN206918077U (en) | 2017-06-12 | 2017-06-12 | Axial magnetic suspension bearing, magnetic suspension system and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206918077U true CN206918077U (en) | 2018-01-23 |
Family
ID=61313707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720680191.XU Withdrawn - After Issue CN206918077U (en) | 2017-06-12 | 2017-06-12 | Axial magnetic suspension bearing, magnetic suspension system and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206918077U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100932A (en) * | 2017-06-12 | 2017-08-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Axial magnetic suspension bearing, magnetic suspension system and compressor |
| CN109058296A (en) * | 2018-10-09 | 2018-12-21 | 珠海格力电器股份有限公司 | Stator module and the hybrid magnetic-suspension axial bearing arrangement of suction and repulsion |
| CN109681525A (en) * | 2018-12-10 | 2019-04-26 | 南京磁之汇电机有限公司 | Magnetic suspension bearing and motor |
| CN111828476A (en) * | 2020-06-30 | 2020-10-27 | 珠海格力电器股份有限公司 | Stator core, magnetic suspension bearing, supporting system, control method and motor of magnetic suspension bearing |
| CN115360880A (en) * | 2022-10-21 | 2022-11-18 | 山东天瑞重工有限公司 | Wound core thrust magnetic bearing |
-
2017
- 2017-06-12 CN CN201720680191.XU patent/CN206918077U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100932A (en) * | 2017-06-12 | 2017-08-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Axial magnetic suspension bearing, magnetic suspension system and compressor |
| CN109058296A (en) * | 2018-10-09 | 2018-12-21 | 珠海格力电器股份有限公司 | Stator module and the hybrid magnetic-suspension axial bearing arrangement of suction and repulsion |
| CN109058296B (en) * | 2018-10-09 | 2024-03-05 | 珠海格力电器股份有限公司 | Stator assembly and repulsive force combined magnetic suspension axial bearing structure |
| CN109681525A (en) * | 2018-12-10 | 2019-04-26 | 南京磁之汇电机有限公司 | Magnetic suspension bearing and motor |
| CN109681525B (en) * | 2018-12-10 | 2020-10-02 | 南京磁之汇电机有限公司 | Magnetic suspension bearing and motor |
| CN111828476A (en) * | 2020-06-30 | 2020-10-27 | 珠海格力电器股份有限公司 | Stator core, magnetic suspension bearing, supporting system, control method and motor of magnetic suspension bearing |
| CN115360880A (en) * | 2022-10-21 | 2022-11-18 | 山东天瑞重工有限公司 | Wound core thrust magnetic bearing |
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