CN113048149A - Magnetic suspension bearing, magnetic suspension motor and compressor - Google Patents
Magnetic suspension bearing, magnetic suspension motor and compressor Download PDFInfo
- Publication number
- CN113048149A CN113048149A CN202110118278.9A CN202110118278A CN113048149A CN 113048149 A CN113048149 A CN 113048149A CN 202110118278 A CN202110118278 A CN 202110118278A CN 113048149 A CN113048149 A CN 113048149A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- housing
- magnetic suspension
- radial ring
- mounting groove
- 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.)
- Pending
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 47
- 238000005339 levitation Methods 0.000 claims 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000002427 irreversible effect Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 32
- 238000004804 winding Methods 0.000 description 8
- 239000011162 core material Substances 0.000 description 5
- 229910000976 Electrical steel Inorganic materials 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- F16C32/047—Details of housings; Mounting of active magnetic bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0459—Details of the magnetic circuit
- F16C32/0461—Details of the magnetic circuit of stationary parts of the magnetic circuit
-
- 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
- F16C32/0493—Active magnetic bearings for rotary movement integrated in an electrodynamic machine, e.g. self-bearing motor
-
- 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
- H02K7/09—Structural association with bearings with magnetic bearings
-
- 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
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/50—Positive connections
- F16C2226/62—Positive connections with pins, bolts or dowels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/20—Application independent of particular apparatuses related to type of movement
- F16C2300/22—High-speed rotation
-
- 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
- F16C2360/00—Engines or pumps
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a magnetic suspension bearing, a magnetic suspension motor and a compressor, wherein the magnetic suspension bearing comprises an outer shell, a first mounting groove for mounting a radial ring is formed in the outer shell, and the radial ring is detachably connected with the outer shell through a threaded fastener. According to the invention, the phenomenon that the outer shell generates irreversible deformation due to hot jacket is effectively avoided, secondary processing is not required after the radial ring and the outer shell are assembled, the cost is reduced, meanwhile, the radial ring and the outer shell can be conveniently disassembled and assembled, the production efficiency is improved, the bearing precision is not reduced, and the connection is more reliable.
Description
Technical Field
The invention belongs to the technical field of magnetic suspension bearing manufacturing, and particularly relates to a magnetic suspension bearing, a magnetic suspension motor and a compressor.
Background
The magnetic suspension motor is characterized in that the magnetic suspension bearing interacts with the magnetic force of the rotor, so that the rotor is suspended at a certain position, the mechanical friction between the stator and the rotor is zero, the rotating speed of the motor can be well improved, and the service life of the motor can be prolonged. The magnetic suspension bearing is an important component of a magnetic suspension motor, and mainly controls axial and radial forces of a rotor to ensure suspension precision. There is a known magnetic suspension radial bearing structure (as shown in fig. 1), which comprises: casing, radial ring, iron core, winding.
In the bearing, a shell is usually made of non-magnetic-conductive alloy materials and is used for fixing a bearing stator assembly and connecting the bearing stator assembly with a motor shell; the radial ring is made of a magnetic conductive material and plays a role in conducting a magnetic circuit; the iron core is formed by laminating silicon steel sheets and has the function of enabling the winding to be wound on the iron core in a lap mode and conducting a magnetic circuit; the stator winding is an enameled wire and mainly provides electromagnetic force for the magnetic suspension radial bearing. The iron core passes through silicon steel sheet stack pressure equipment and forms, and the winding is fixed on the iron core through the wire winding, and the outer cylinder face of iron core and the inner cylinder face of radial ring, the outer cylinder face of radial ring all adopt interference fit fixed with the inner cylinder face of casing afterwards, make casing, radial ring, iron core, winding form a whole.
The magnetic suspension radial bearing mainly has the following defects:
(1) the shell and the radial ring are different in material performance (aluminum alloy and steel), the hardness is different, the shell is irreversibly deformed due to the adoption of a hot sleeve, the shell is very inconvenient to assemble and disassemble, and the assembly coaxiality is influenced by repeated assembly and disassembly, so that the suspension precision is influenced; in addition, the shell inevitably deforms in the process of hot sleeve assembly, and the shell needs to be subjected to finish turning after the hot sleeve assembly is finished, so that the assembly size of the shell is ensured, and if the finish turning fails, the whole shell is scrapped, and huge waste is caused;
(2) when the magnetic suspension radial bearing works, the electromagnetic force needs to be continuously adjusted to form an alternating magnetic field, at the moment, the temperature of the whole magnetic suspension bearing is gradually increased because the bearing assembly generates heat due to iron loss, copper loss and eddy current loss, and because the thermal expansion coefficients of different materials are different, the thermal expansion coefficient of an aluminum alloy shell is about twice that of a radial ring and an iron core, the interference magnitude between parts can be reduced under severe environment, and even the iron core and the radial ring, and the radial ring and the shell are loosened when the magnetic suspension radial bearing is impacted, so that the magnetic suspension bearing cannot be used;
(3) the magnetic suspension radial bearing shell is formed by processing a whole blank, the cutting area of the outer circle of the shell is large, a lot of raw materials are wasted, and the economic benefit is low.
Disclosure of Invention
Therefore, the invention provides a magnetic suspension bearing, a magnetic suspension motor and a compressor, which overcome the defects that the prior art needs secondary finish turning when the outer shell generates irreversible deformation due to interference assembly between a radial ring and the outer shell, is inconvenient to disassemble and assemble for many times and is easy to reduce the precision of the bearing.
In order to solve the above problems, the present invention provides a magnetic suspension bearing, which includes an outer housing, wherein a first mounting groove for mounting a radial ring is configured in the outer housing, and the radial ring and the outer housing are detachably connected through a threaded fastener.
Preferably, the first mounting groove is a circular truncated cone groove, and the shape of the outer annular wall of the radial ring is matched with the circular truncated cone groove.
Preferably, the magnetic suspension bearing further comprises an iron core, a second mounting groove is formed in the radial ring, the iron core is mounted in the second mounting groove, and the second mounting groove is connected with the iron core through a concave-convex structure.
Preferably, a plurality of positioning grooves are formed in the outer cylindrical wall of the iron core, a plurality of protrusions are formed in the groove side wall of the second mounting groove, and the plurality of protrusions are respectively inserted into the plurality of second mounting grooves in a one-to-one correspondence manner.
Preferably, the outer housing comprises a first housing, a second housing, and the first housing and the second housing are bolted together.
Preferably, the first mounting groove is formed on a side of the second housing facing the first housing.
Preferably, the second mounting groove is configured on one side of the radial ring away from the first housing, a rotating shaft hole is configured on the second housing, the rotating shaft hole is coaxial with the second mounting groove, and the diameter of the rotating shaft hole is smaller than the outer diameter of the iron core.
Preferably, the iron core has a plurality of teeth, and each tooth is provided with a through hole penetrating through two axial end faces of the iron core.
The invention also provides a magnetic suspension motor which comprises the magnetic suspension bearing.
The invention also provides a compressor, which comprises the magnetic suspension bearing.
According to the magnetic suspension bearing, the magnetic suspension motor and the compressor, a heat sleeve mode in the prior art is improved into a detachable connection mode realized through the threaded fastener, so that the phenomenon of irreversible deformation of the outer shell caused by heat sleeve is effectively avoided, secondary processing is not needed after the radial ring and the outer shell are assembled, the cost is reduced, meanwhile, the radial ring and the outer shell can be conveniently disassembled and assembled, the production efficiency is improved, the bearing precision is not reduced, and the connection is more reliable.
Drawings
FIG. 1 is a schematic diagram of the internal structure of a magnetic suspension radial bearing in the prior art;
FIG. 2 is a schematic diagram of the internal structure of a magnetic suspension bearing according to an embodiment of the present invention;
FIG. 3 is a schematic view of an assembly of the first housing, the second housing, and the radial ring of FIG. 2;
FIG. 4 is an axial projection of the core of FIG. 2;
fig. 5 is a schematic view illustrating an assembly structure of the core and the radial ring in fig. 2.
The reference numerals are represented as:
1. an outer housing; 12. a first housing; 13. a second housing; 2. a radial ring; 22. a protrusion; 3. an iron core; 31. a positioning groove; 32. teeth; 33. a through hole; 4. a threaded fastener; 5. and (4) winding.
Detailed Description
Referring to fig. 1 to 5 in combination, according to an embodiment of the present invention, there is provided a magnetic suspension bearing, specifically, for example, a magnetic suspension radial bearing, including an outer casing 1 made of non-magnetic conductive material, an outer side of the outer casing 1 is engaged with a corresponding bearing chamber of a motor or a compressor to form a connection, a first mounting groove is configured in the outer casing 1 for mounting a radial ring 2, the radial ring 2 is made of magnetic conductive material, and the radial ring 2 is detachably connected with the outer casing 1 through a threaded fastener 4. In the technical scheme, a hot sleeve mode in the prior art is improved into a detachable connection mode realized through the threaded fastener 4, so that the phenomenon that the outer shell 1 is irreversibly deformed due to hot sleeve is effectively avoided, secondary processing is not needed after the radial ring 2 and the outer shell 1 are assembled, the cost is reduced, meanwhile, the radial ring 2 and the outer shell 1 can be conveniently disassembled and assembled, the production efficiency is improved, the bearing precision is not reduced, and the connection is more reliable.
In some embodiments, the first mounting groove (not referenced in the drawings) is a circular truncated cone groove, that is, the longitudinal section of the first mounting groove is an isosceles trapezoid, and at this time, the shape of the outer annular wall of the radial ring 2 matches the circular truncated cone groove, that is, the outer annular wall of the radial ring 2 is circular truncated cone, and the circular truncated cone groove can be used to form a guide for assembling the radial ring 2, so that the radial ring 2 can be assembled more conveniently.
The magnetic suspension bearing further comprises an iron core 3, a second mounting groove (not marked in the figure) is constructed on the radial ring 2, the iron core 3 is mounted in the second mounting groove, and the second mounting groove is connected with the iron core 3 through a concave-convex structure. In the technical scheme, the connection mode of the iron core 3 and the radial ring 2 is improved from the hot sleeve in the prior art to the connection through the concave-convex structure, so that the deformation between the iron core 3 and the radial ring 2 caused by the hot sleeve can be reduced, and the phenomenon that the iron core 3 is separated from the radial ring 2 due to the inconsistent deformation caused by the temperature rise of the iron core 3 and the radial ring in the bearing operation process can be effectively prevented. In a preferred embodiment, a plurality of positioning grooves 31 are formed on the outer cylindrical wall of the core 3, a plurality of protrusions 22 are formed on the slot side walls of the second mounting grooves, the plurality of protrusions 22 are respectively inserted into the plurality of second mounting grooves in a one-to-one correspondence manner, and the loss of core material can be reduced by forming the positioning grooves 31 on the outer cylindrical wall of the core 3. The iron core 3 can be formed by stacking silicon steel sheets.
In some embodiments, the outer casing 1 includes a first casing 12 and a second casing 13, and the first casing 12 and the second casing 13 are bolted with bolts and corresponding nuts. In the technical scheme, the shell of the integral structure in the prior art is formed by assembling the first shell 12 and the second shell 13 which are relatively independent from each other, so that on one hand, the selection of the specification and the size of the raw materials of the first shell 12 and the second shell 13 can be more flexible, and specifically, on the assumption that the outer shell 1 in the invention is the same as the shell in the prior art shown in fig. 1 in terms of the external shape structure, at this time, a part with a relatively small external circle size is independently processed as the first shell 12 in the invention, and a part with a relatively large external circle size is independently processed as the second shell 13 in the invention, so that the area for external circle cutting processing can be smaller, and the material cost can be obviously reduced.
The first mounting groove is formed on a side of the second housing 13 facing the first housing 12, at this time, the first housing 12 is located on a side of a notch of the first mounting groove, and the first housing 12, the second housing 13 (the groove bottom wall and the groove side wall of the first mounting groove) and the threaded fastener 4 together form a reliable limit to a degree of freedom (six degrees of freedom) of the radial ring 2, thereby effectively preventing axial play, radial run-out and circumferential rotation of the radial ring 2.
In some embodiments, the second mounting groove is configured on a side of the radial ring 2 away from the first housing 12, and the second housing 13 is configured with a rotation shaft hole (not referenced in the drawings), the rotation shaft hole is coaxial with the second mounting groove, and the diameter of the rotation shaft hole is smaller than the outer diameter of the iron core 3, at this time, the second mounting groove (the groove bottom wall and the groove side wall), the concave-convex structure, and the groove bottom wall of the first mounting groove together form a reliable limit for the degree of freedom (six degrees of freedom) of the iron core 3, so as to effectively prevent axial play, radial run-out, and circumferential rotation of the iron core 3.
The iron core 3 is provided with a plurality of teeth 32, each tooth 32 is wound with a winding 5, and each tooth 32 is provided with a through hole 33 penetrating through two axial end surfaces of the iron core 3 so as to cool the tooth 32.
According to an embodiment of the present invention, there is also provided a magnetic suspension motor, including a magnetic suspension bearing, where the magnetic suspension bearing is the above magnetic suspension bearing.
According to an embodiment of the present invention, there is also provided a compressor including a magnetic suspension bearing, where the magnetic suspension bearing is the above magnetic suspension bearing.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. The magnetic suspension bearing is characterized by comprising an outer shell (1), wherein a first mounting groove for mounting a radial ring (2) is formed in the outer shell (1), and the radial ring (2) is detachably connected with the outer shell (1) through a threaded fastener (4).
2. Magnetic bearing according to claim 1, characterized in that the first mounting groove is a circular truncated cone groove, the outer ring wall of the radial ring (2) being shaped to match the circular truncated cone groove.
3. Magnetic bearing according to claim 1, characterized in that it further comprises a core (3), the radial ring (2) is configured with a second mounting groove, the core (3) is mounted in the second mounting groove, and the second mounting groove is connected with the core (3) through a concave-convex structure.
4. Magnetic bearing according to claim 3, characterized in that the core (3) is formed with a plurality of positioning grooves (31) on its outer cylindrical wall, and a plurality of protrusions (22) are formed on the slot side walls of the second mounting grooves, the plurality of protrusions (22) being inserted into the plurality of second mounting grooves in a one-to-one correspondence.
5. Magnetic bearing according to claim 4, characterized in that the outer housing (1) comprises a first housing (12), a second housing (13), the first housing (12) and the second housing (13) being bolted together.
6. Magnetic bearing according to claim 5, characterized in that the first mounting groove is configured on the side of the second housing (13) facing the first housing (12).
7. Magnetic suspension bearing according to claim 5, characterized in that the second mounting groove is formed on the side of the radial ring (2) facing away from the first housing (12), and the second housing (13) is formed with a spindle bore, which is coaxial with the second mounting groove and has a smaller bore diameter than the outer diameter of the core (3).
8. Magnetic bearing according to claim 3, characterized in that the core (3) has a plurality of teeth (32), each tooth (32) being formed with a through-hole (33) through both axial end faces of the core (3).
9. A magnetic levitation motor comprising a magnetic levitation bearing, wherein the magnetic levitation bearing is the magnetic levitation bearing of any one of claims 1 to 8.
10. Compressor comprising magnetic bearings, characterized in that said magnetic bearings are magnetic bearings according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110118278.9A CN113048149A (en) | 2021-01-28 | 2021-01-28 | Magnetic suspension bearing, magnetic suspension motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110118278.9A CN113048149A (en) | 2021-01-28 | 2021-01-28 | Magnetic suspension bearing, magnetic suspension motor and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113048149A true CN113048149A (en) | 2021-06-29 |
Family
ID=76508330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110118278.9A Pending CN113048149A (en) | 2021-01-28 | 2021-01-28 | Magnetic suspension bearing, magnetic suspension motor and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113048149A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB181384A (en) * | 1921-06-11 | 1923-07-19 | Frederick Emil Mueller | Improvements in or relating to shaft bearings |
| CN109058295A (en) * | 2018-09-25 | 2018-12-21 | 珠海格力电器股份有限公司 | Magnetic suspension bearing anti-loosening protection structure and magnetic suspension bearing with same |
| CN110469584A (en) * | 2019-09-09 | 2019-11-19 | 珠海格力电器股份有限公司 | Magnetic suspension bearing rotor structure, magnetic suspension bearing, compressor and air conditioner |
| CN214534061U (en) * | 2021-01-28 | 2021-10-29 | 珠海格力电器股份有限公司 | Magnetic suspension bearing, magnetic suspension motor and compressor |
-
2021
- 2021-01-28 CN CN202110118278.9A patent/CN113048149A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB181384A (en) * | 1921-06-11 | 1923-07-19 | Frederick Emil Mueller | Improvements in or relating to shaft bearings |
| CN109058295A (en) * | 2018-09-25 | 2018-12-21 | 珠海格力电器股份有限公司 | Magnetic suspension bearing anti-loosening protection structure and magnetic suspension bearing with same |
| CN110469584A (en) * | 2019-09-09 | 2019-11-19 | 珠海格力电器股份有限公司 | Magnetic suspension bearing rotor structure, magnetic suspension bearing, compressor and air conditioner |
| CN214534061U (en) * | 2021-01-28 | 2021-10-29 | 珠海格力电器股份有限公司 | Magnetic suspension bearing, magnetic suspension motor and compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4723595B2 (en) | Permanent magnet generator rotor for gas turbine, manufacturing method thereof, and gas turbine | |
| EP3568602B1 (en) | Active radial magnetic bearing assembly with internal sensors | |
| EP2782217B1 (en) | Rotor for rotating electric machine and motor for electric power steering | |
| JP2007135379A (en) | Magneto-generator | |
| US11867119B2 (en) | Electric generator and multi-shaft gas turbine engine for aircraft equipped with electric generator | |
| US20150244234A1 (en) | Rotor with end ring and electric motor | |
| WO2017056163A1 (en) | Electric motor | |
| CN214534061U (en) | Magnetic suspension bearing, magnetic suspension motor and compressor | |
| US7911095B2 (en) | Servo motor with large rotor inertia | |
| JP2008104288A5 (en) | ||
| JP2017002823A (en) | Rotary machine | |
| CN109962595A (en) | Ultrahigh speed magneto | |
| CN113048149A (en) | Magnetic suspension bearing, magnetic suspension motor and compressor | |
| CN209731028U (en) | Ultrahigh speed magneto | |
| CN111042925A (en) | Rotor system and micro gas turbine generator set | |
| KR20200122250A (en) | A rotor of an induction machine and a method for assembling a cage winding of the rotor | |
| US20240006941A1 (en) | Rotor and rotary electric machine | |
| US11303168B2 (en) | Rotor of rotary electric machine | |
| CN112039243B (en) | Rotor subassembly, motor, compressor | |
| CN112491246B (en) | Magnetic adjusting ring component, magnetic gear, corresponding assembling method and composite motor | |
| US3258624A (en) | Snap ring assembly for securing a rotor to a shaft | |
| CN111987822B (en) | Stator assembly and motor | |
| CN114633281A (en) | Anti-side-tipping high-power-density robot joint driving unit | |
| WO2020118769A1 (en) | Rotary electric motor | |
| JP6403020B2 (en) | Touchdown bearing and rotating machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |