CN112628281A - Air-bearing rotor system and motor - Google Patents
Air-bearing rotor system and motor Download PDFInfo
- Publication number
- CN112628281A CN112628281A CN202011243354.0A CN202011243354A CN112628281A CN 112628281 A CN112628281 A CN 112628281A CN 202011243354 A CN202011243354 A CN 202011243354A CN 112628281 A CN112628281 A CN 112628281A
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- air
- sheath
- axis
- rotor system
- thrust disc
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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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
- F16C17/102—Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure
- F16C17/107—Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure with at least one surface for radial load and at least one surface for axial load
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
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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
- F16C37/00—Cooling of bearings
- F16C37/002—Cooling of bearings of fluid bearings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Support Of The Bearing (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses an air-bearing rotor system and a motor, which comprises an axis, a thrust disc, a sheath, an air conveying device and an impeller, wherein the thrust disc and the sheath are sleeved outside the axis, the thrust disc is butted with the sheath, the end of the sheath far away from the thrust disc is provided with the impeller, the inside of the sheath is provided with a magnetic conductive ring sleeved outside the axis, the outside of the magnetic conductive ring is sleeved with magnetic steel, the two sides of the magnetic steel are provided with the air conveying device sleeved outside the axis, the side wall of the axis is provided with a spiral air passage, the side wall of the thrust disc is provided with a throttling hole communicated with the spiral air passage, the two sides of the thrust disc are sequentially provided with an axial bearing top foil, an axial elastic element and an axial bearing seat from inside to outside, the side wall of the sheath is provided with an air hole communicated with the spiral air passage, the outside of the, and the outer side of the radial top layer top foil is sequentially sleeved with a radial elastic element and a radial bearing seat.
Description
Technical Field
The invention relates to the technical field of bearing rotors, in particular to an air-bearing rotor system and a motor.
Background
The elastic foil radial bearing mainly comprises a bearing seat, an arch foil and a top foil (flat foil). The bump foil is mounted on the bearing base (bearing housing), the top foil is above the bump foil, the leading edges of the arch foil and the top foil are spot-welded or clamped on the bearing outer ring housing, the leading edges are fixed ends, the trailing edges are free ends, the arch foil provides support for the top foil, and the arch foil not only provides rigidity for the bearing similar to a spring, but also provides damping. When the rotor rotates at a high speed, gas is brought into a gap between the bearing and the rotor to form a gas film due to the dynamic pressure effect of the gas, so that the hydrodynamic lubrication effect is generated; when the bearing is subjected to external load in the working process, the arched foil is elastically deformed and bears the load together with the air film pressure. The working mode greatly improves the bearing capacity of the gas bearing, and meanwhile, when the bearing is subjected to impact load, energy generated by impact is converted into elastic potential energy of the foil, and then the elastic potential energy is damped and dissipated through the air film, so that the elastic foil bearing has good self-adaptability, and the stability of the elastic foil bearing during working is ensured. However, the radial foil bearing has high takeoff speed and low bearing capacity, and the heat of the bearing and the rotor cannot be rapidly dissipated when the rotor operates at a super high speed, so that the problem of low start-stop service life of the bearing is caused.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an air bearing rotor system and a motor, which effectively solve the problem of temperature rise of a high-speed permanent magnet rotor and a dynamic pressure gas bearing, effectively overcome the problem that high-temperature heavy current of the high-speed permanent magnet motor is easy to demagnetize, and prolong the start-stop service life.
In order to achieve the purpose, the invention provides the following technical scheme:
an air-bearing rotor system comprises an axle center, a thrust disc, a sheath, an air conveying device and an impeller, the thrust disk and the sheath are sleeved outside the axis, the thrust disk is in butt joint with the sheath, one end of the sheath far away from the thrust disk is provided with an impeller, the inside of the sheath is provided with a magnetic conductive ring which is sleeved outside the axis, the outside of the magnetic conductive ring is sleeved with magnetic steel, the two sides of the magnetic steel are provided with gas conveying devices sleeved outside the axis, the side wall of the axis is provided with a spiral air passage, the side wall of the thrust disc is provided with a throttling hole communicated with the spiral air passage, two sides of the thrust disc are sequentially provided with an axial bearing top foil, an axial elastic element and an axial bearing seat from inside to outside, the side wall of the sheath is provided with an air hole communicated with the spiral air passage, the outer side of the air hole is provided with a radial top layer top foil sleeved outside the sheath, and the outer side of the radial top layer top foil is sequentially sleeved with a radial elastic element and a radial bearing seat.
Preferably, the clearance of the spiral air channel gradually becomes larger from the impeller to the thrust disk.
Preferably, the middle part of the thrust disc is provided with a convex sleeve sleeved outside the axis, an air cavity communicated with the spiral air passage is arranged inside the convex sleeve, and the air cavity is communicated with the throttling hole.
Preferably, the gas conveying device comprises a lantern ring, the lantern ring is sleeved outside the axis, the side wall of the lantern ring is provided with a spiral air hole corresponding to the spiral air passage, and the two ends of the lantern ring are provided with a supporting disk.
Preferably, a pressure equalizing cavity is formed between the lantern ring and the jacket and is communicated with the air hole.
Preferably, a gap is arranged between the shaft center and the impeller.
Preferably, the magnetic conductive rings are fixedly connected with the axis, and the magnetic steel is fixedly connected with the magnetic conductive rings.
Preferably, the diameter of the air holes is not more than 0.1 mm.
Preferably, a lubricating coating is arranged between the radial top layer top foil and the sheath.
Preferably, a lubricating coating is arranged between the thrust disc and the axial bearing top foil.
Preferably, the lubricating coating is polyimide.
An electric machine comprising the air bearing rotor system.
Compared with the prior art, the invention has the beneficial effects that:
1. the problems of high takeoff rotating speed and serious abrasion of the air bearing are solved. In the take-off process of the bearing, the dynamic pressure air film and the air film provided by high-pressure air exist, so that the take-off rotating speed of the bearing can be reduced by about 40-50%, the mechanical abrasion of the dynamic pressure bearing can be reduced, and the service life of the bearing is prolonged.
2. The problem of the dynamic pressure bearing capacity is little is solved. The traditional gas dynamic pressure bearing generates gas film support due to wedge effect; the scheme not only has the wedge effect, but also supports the rotor by pumped high-pressure gas, thereby greatly improving the bearing performance of the bearing.
3. The bearing rotor system can well take away heat generated in the rear radial bearing, the motor rotor, the front radial bearing and the thrust bearing, effectively solves the problem of temperature rise of the high-speed permanent magnet rotor and the dynamic pressure gas bearing, effectively overcomes the problem that high-temperature heavy current of the high-speed permanent magnet motor is easy to demagnetize, and increases the reliability of the permanent magnet motor rotor; the air bearing-rotor does not need an external air source, is more convenient to install and use, and is not influenced by an external air source.
4. And the abrasion of rotor halt is reduced. The pressure equalizing device can store more gas while equalizing pressure, and can output a certain amount of gas when the rotor is stopped, so that the rotor is lubricated and supported by a gas film when the rotating speed of the rotor is almost zero, the friction and the abrasion of the rotor when the rotor is stopped can be greatly reduced, and the start-stop service life is prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the shaft;
FIG. 3 is a schematic view of the construction of the sheath;
fig. 4 is a schematic structural diagram of the gas delivery device.
In the figure: 1-axis center; 101-helical air passage; 2-a thrust disk; 201-convex sleeve; 202-orifice; 3-a sheath; 301-air holes; 4-a gas delivery device; 401-a support disk; 402-spiral air hole; 403-a collar; 5-magnetic steel; 6-magnetic conductive ring; 7-an impeller; 8-pressure equalizing cavity; 9-axial bearing seat; 10-an axial elastic element; 11-axial bearing top foil; 12-a radial bearing seat; 13-a radial elastic element; 14-radial top layer top foil.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the first embodiment, the first step is,
as shown in fig. 1-4, an air-floating rotor heat dissipation structure includes an axis 1, a thrust disk 2, a sheath 3, an air delivery device 4 and an impeller 7, the thrust disk 2 and the sheath 3 are sleeved outside the axis 1, the thrust disk 2 is in butt joint with the sheath 3, the impeller 7 is arranged at one end of the sheath 3 away from the thrust disk 2, a magnetic ring 6 sleeved outside the axis 1 is arranged inside the sheath 3, a magnetic steel 5 is sleeved outside the magnetic ring 6, the air delivery device 4 sleeved outside the axis 1 is arranged on two sides of the magnetic steel 5, a spiral air passage 101 is arranged on the side wall of the axis 1, a throttling hole 202 communicated with the spiral air passage 101 is arranged on the side wall of the thrust disk 2, an axial bearing top foil 11, an axial elastic element 10 and an axial bearing seat 9 are sequentially arranged on two sides of the thrust disk 2 from inside to outside, an air hole 301 communicated with the spiral air passage is arranged on the side, the outer side of the air hole 301 is provided with a radial top layer top foil 14 sleeved outside the sheath 3, and the outer side of the radial top layer top foil 14 is sequentially sleeved with a radial elastic element 13 and a radial bearing seat 12.
In the second embodiment, the first embodiment of the method,
as shown in fig. 1-4, an air-floating rotor heat dissipation structure includes an axis 1, a thrust disk 2, a sheath 3, an air delivery device 4 and an impeller 7, the thrust disk 2 and the sheath 3 are sleeved outside the axis 1, the thrust disk 2 is in butt joint with the sheath 3, the impeller 7 is arranged at one end of the sheath 3 away from the thrust disk 2, a magnetic ring 6 sleeved outside the axis 1 is arranged inside the sheath 3, a magnetic steel 5 is sleeved outside the magnetic ring 6, the air delivery device 4 sleeved outside the axis 1 is arranged on two sides of the magnetic steel 5, a spiral air passage 101 is arranged on the side wall of the axis 1, a throttling hole 202 communicated with the spiral air passage 101 is arranged on the side wall of the thrust disk 2, an axial bearing top foil 11, an axial elastic element 10 and an axial bearing seat 9 are sequentially arranged on two sides of the thrust disk 2 from inside to outside, an air hole 301 communicated with the spiral air passage is arranged on the side, the outer side of the air hole 301 is provided with a radial top layer top foil 14 sleeved outside the sheath 3, and the outer side of the radial top layer top foil 14 is sequentially sleeved with a radial elastic element 13 and a radial bearing seat 12.
In the present embodiment, the clearance of the spiral air passage 101 gradually increases from the impeller 7 to the thrust disk 2.
The middle part of the thrust disc 2 is provided with a convex sleeve 201 sleeved outside the axis 1, an air cavity communicated with the spiral air passage 101 is arranged inside the convex sleeve 201, and the air cavity is communicated with the throttling hole 202.
The gas conveying device 4 comprises a lantern ring 403, the lantern ring 403 is sleeved outside the shaft center 1, a spiral air hole 402301 corresponding to the spiral air passage 101 is arranged on the side wall of the lantern ring 403, and supporting discs 401 are arranged at two ends of the lantern ring 403.
A pressure equalizing cavity 8 is formed between the collar 403 and the sheath 3, and the pressure equalizing cavity 8 is communicated with the air holes 301.
And a gap is arranged between the shaft center 1 and the impeller 7.
The magnetic conductive rings 6 are fixedly connected with the axle center 1, and the magnetic steel 5 is fixedly connected with the magnetic conductive rings 6.
The diameter of the air hole 301 is not more than 0.1 mm.
In the third embodiment, the first step is that,
as shown in fig. 1-4, an air-floating rotor heat dissipation structure includes an axis 1, a thrust disk 2, a sheath 3, an air delivery device 4 and an impeller 7, the thrust disk 2 and the sheath 3 are sleeved outside the axis 1, the thrust disk 2 is in butt joint with the sheath 3, the impeller 7 is arranged at one end of the sheath 3 away from the thrust disk 2, a magnetic ring 6 sleeved outside the axis 1 is arranged inside the sheath 3, a magnetic steel 5 is sleeved outside the magnetic ring 6, the air delivery device 4 sleeved outside the axis 1 is arranged on two sides of the magnetic steel 5, a spiral air passage 101 is arranged on the side wall of the axis 1, a throttling hole 202 communicated with the spiral air passage 101 is arranged on the side wall of the thrust disk 2, an axial bearing top foil 11, an axial elastic element 10 and an axial bearing seat 9 are sequentially arranged on two sides of the thrust disk 2 from inside to outside, an air hole 301 communicated with the spiral air passage is arranged on the side, the outer side of the air hole 301 is provided with a radial top layer top foil 14 sleeved outside the sheath 3, and the outer side of the radial top layer top foil 14 is sequentially sleeved with a radial elastic element 13 and a radial bearing seat 12.
In the present embodiment, the clearance of the spiral air passage 101 gradually increases from the impeller 7 to the thrust disk 2.
The middle part of the thrust disc 2 is provided with a convex sleeve 201 sleeved outside the axis 1, an air cavity communicated with the spiral air passage 101 is arranged inside the convex sleeve 201, and the air cavity is communicated with the throttling hole 202.
The gas conveying device 4 comprises a lantern ring 403, the lantern ring 403 is sleeved outside the shaft center 1, a spiral air hole 402301 corresponding to the spiral air passage 101 is arranged on the side wall of the lantern ring 403, and supporting discs 401 are arranged at two ends of the lantern ring 403.
A pressure equalizing cavity 8 is formed between the collar 403 and the sheath 3, and the pressure equalizing cavity 8 is communicated with the air holes 301.
And a gap is arranged between the shaft center 1 and the impeller 7.
The magnetic conductive rings 6 are fixedly connected with the axle center 1, and the magnetic steel 5 is fixedly connected with the magnetic conductive rings 6.
The diameter of the air hole 301 is not more than 0.1 mm.
A lubricating coating is provided between the radial top foil 14 and the sheath 3.
And a lubricating coating is arranged between the thrust disc 2 and the axial bearing top foil 11.
The lubricating coating is polyimide.
In the fourth embodiment, the first step is that,
as shown in fig. 1-4, a motor includes an air-floating rotor heat dissipation structure, which includes an axis 1, a thrust disk 2, a sheath 3, an air delivery device 4 and an impeller 7, the thrust disk 2 and the sheath 3 are sleeved outside the axis 1, the thrust disk 2 is in butt joint with the sheath 3, the impeller 7 is disposed at one end of the sheath 3 away from the thrust disk 2, a magnetic ring 6 sleeved outside the axis 1 is disposed inside the sheath 3, a magnetic steel 5 is sleeved outside the magnetic ring 6, the air delivery device 4 sleeved outside the axis 1 is disposed at two sides of the magnetic steel 5, a spiral air passage 101 is disposed on a side wall of the axis 1, a throttle hole 202 communicated with the spiral air passage 101 is disposed on a side wall of the thrust disk 2, an axial bearing top foil 11, an axial elastic element 10 and an axial bearing seat 9 are sequentially disposed at two sides of the thrust disk 2 from inside to outside, an air hole 301 communicated with the spiral air passage is disposed on a side, the outer side of the air hole 301 is provided with a radial top layer top foil 14 sleeved outside the sheath 3, and the outer side of the radial top layer top foil 14 is sequentially sleeved with a radial elastic element 13 and a radial bearing seat 12.
In the present embodiment, the clearance of the spiral air passage 101 gradually increases from the impeller 7 to the thrust disk 2.
The middle part of the thrust disc 2 is provided with a convex sleeve 201 sleeved outside the axis 1, an air cavity communicated with the spiral air passage 101 is arranged inside the convex sleeve 201, and the air cavity is communicated with the throttling hole 202.
The gas conveying device 4 comprises a lantern ring 403, the lantern ring 403 is sleeved outside the shaft center 1, a spiral air hole 402301 corresponding to the spiral air passage 101 is arranged on the side wall of the lantern ring 403, and supporting discs 401 are arranged at two ends of the lantern ring 403.
A uniform pressure cavity 8 is formed between the lantern ring 403 and the sheath 3, the uniform pressure cavity 8 is communicated with the air hole 301, and a gap is formed between the axis 1 and the impeller 7. The magnetic conductive rings 6 and the axis 1 and the magnetic steel 5 and the magnetic conductive rings 6 are fixedly connected, and the diameter of the air hole 301 is not more than 0.1 mm.
And a lubricating coating is arranged between the radial top layer top foil 14 and the sheath 3, and a lubricating coating is arranged between the thrust disc 2 and the axial bearing top foil 11 and is polyimide.
The inner wall of the radial top layer top foil 14 is provided with a wear-resistant lubricating coating (such as polyimide) which can reduce the mechanical friction between the rotor and the radial top layer top foil 14 during take-off and reduce the abrasion between the radial top layer top foil 14 and the corresponding position of the sheath 3 (radial bearing rotor position), and the radial elastic element 13 mainly provides elastic support for the radial top layer top foil 14 and can consume energy during rotor vibration so that the rotor can stably run in the radial direction.
The top foil 11 of the axial bearing is provided with a wear-resistant lubricating coating (such as polyimide); the axial elastic element 10 provides elastic support for the axial bearing top foil 11 and consumes the energy of the rotor in the axial vibration to enable the rotor to run more smoothly, and the axial bearing seat 9 is mainly used for fixing the axial bearing top foil 11 and the axial bearing elastic element 10.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (12)
1. An air bearing rotor system, characterized by: comprises an axis, a thrust disc, a sheath, a gas conveying device and an impeller, wherein the thrust disc and the sheath are sleeved outside the axis, the thrust disc is in butt joint with the sheath, the impeller is arranged at one end of the sheath far away from the thrust disc, the inside of the sheath is provided with a magnetic conductive ring which is sleeved outside the axis, the outside of the magnetic conductive ring is sleeved with magnetic steel, the two sides of the magnetic steel are provided with gas conveying devices sleeved outside the axis, the side wall of the axis is provided with a spiral air passage, the side wall of the thrust disc is provided with a throttling hole communicated with the spiral air passage, two sides of the thrust disc are sequentially provided with an axial bearing top foil, an axial elastic element and an axial bearing seat from inside to outside, the side wall of the sheath is provided with an air hole communicated with the spiral air passage, the outer side of the air hole is provided with a radial top layer top foil sleeved outside the sheath, and the outer side of the radial top layer top foil is sequentially sleeved with a radial elastic element and a radial bearing seat.
2. An air bearing rotor system as claimed in claim 1, wherein: the clearance of the spiral air passage is gradually enlarged from the impeller to the thrust disc.
3. An air bearing rotor system as claimed in claim 1, wherein: the middle part of the thrust disc is provided with a convex sleeve sleeved outside the axis, an air cavity communicated with the spiral air passage is arranged inside the convex sleeve, and the air cavity is communicated with the throttling hole.
4. An air bearing rotor system as claimed in claim 1, wherein: the gas conveying device comprises a lantern ring, the lantern ring is sleeved outside the axis, the side wall of the lantern ring is provided with a spiral air hole corresponding to the spiral air passage, and the two ends of the lantern ring are provided with supporting disks.
5. An air bearing rotor system as claimed in claim 1, wherein: and a pressure equalizing cavity is formed between the lantern ring and the jacket and is communicated with the air holes.
6. An air bearing rotor system as claimed in claim 1, wherein: and a gap is arranged between the axis and the impeller.
7. An air bearing rotor system as claimed in claim 1, wherein: the magnetic conductive rings are fixedly connected with the axle center and the magnetic steel is fixedly connected with the magnetic conductive rings.
8. An air bearing rotor system as claimed in claim 1, wherein: the diameter of the air hole is not more than 0.1 mm.
9. An air bearing rotor system as claimed in claim 1, wherein: and a lubricating coating is arranged between the radial top layer top foil and the sheath.
10. An air bearing rotor system as claimed in claim 1, wherein: and a lubricating coating is arranged between the thrust disc and the top foil of the axial bearing.
11. An air bearing rotor system according to claim 9 or 10, wherein: the lubricating coating is polyimide.
12. An electric machine characterized by: an air bearing rotor system comprising any one of claims 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011243354.0A CN112628281B (en) | 2020-11-09 | 2020-11-09 | Air-bearing rotor system and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011243354.0A CN112628281B (en) | 2020-11-09 | 2020-11-09 | Air-bearing rotor system and motor |
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| Publication Number | Publication Date |
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| CN112628281A true CN112628281A (en) | 2021-04-09 |
| CN112628281B CN112628281B (en) | 2022-02-22 |
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