CN112531958B - Magnetic suspension single disc type motor and fan with same - Google Patents
Magnetic suspension single disc type motor and fan with same Download PDFInfo
- Publication number
- CN112531958B CN112531958B CN202011454794.0A CN202011454794A CN112531958B CN 112531958 B CN112531958 B CN 112531958B CN 202011454794 A CN202011454794 A CN 202011454794A CN 112531958 B CN112531958 B CN 112531958B
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- rotating shaft
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- stator
- fixed
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- 239000000725 suspension Substances 0.000 title claims abstract description 26
- 230000001681 protective effect Effects 0.000 claims description 15
- 238000005339 levitation Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
-
- 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
- F16C32/0476—Active magnetic bearings for rotary movement with active support of one degree of freedom, e.g. axial magnetic bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/048—Active magnetic bearings for rotary movement with active support of two degrees of freedom, e.g. radial magnetic bearings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
Abstract
A magnetic suspension single-disk motor comprises a base, a mounting seat, a stator, a rotor assembly, a rotating shaft and a magnetic bearing assembly, wherein the mounting seat is fixed on the base and is internally provided with a first containing cavity and a second containing cavity; the stator is positioned in the first containing cavity, and one end of the stator is fixed with the base; the rotating shaft penetrates through the second containing cavity and is coaxially arranged with the second containing cavity; the rotor assembly is fixed with the end face of the rotating shaft and is positioned in the first containing cavity, the magnetic bearing group comprises an axial magnetic bearing and a radial magnetic bearing, the axial magnetic bearing is positioned in the first containing cavity and is fixed with the mounting seat, and the radial magnetic bearing is positioned in the second containing cavity and is fixed with the mounting seat; the scheme adopts the magnetic suspension bearing to replace the traditional common bearing, so that the rotating shaft system is in a suspension state when the disc type motor rotates, the friction is free, the limit rotating speed of the motor is higher, the efficiency is high, and the service life is longer.
Description
Technical Field
The invention relates to the field of motors, in particular to a magnetic suspension single-disc motor and a fan with the same.
Background
The disc type motor is a motor with axially opposite stator and rotor of the motor, and because the disc type motor has the characteristics of compact structure, high efficiency, high power density and the like, the disc type motor is applied to a fan and is a common method for various manufacturers at present.
At present, the rotor of a general disc motor mostly adopts a common bearing (a traditional ball bearing, a sliding bearing and an oil film bearing) to realize rotary support, so that the bearing has friction loss when the motor rotates, and particularly, when the motor works at a high rotating speed, the problems of serious heat generation, high noise, low motor efficiency, short service life of the bearing and the like occur for a long time, so that the optimization of the disc motor is the subject of continuous research of designers at present.
Disclosure of Invention
The invention provides a new technical scheme aiming at the problems in the prior art, and the technology of combining a magnetic suspension bearing and a motor is adopted, so that a rotating shaft system is in a suspension state when the motor rotates, no contact type friction exists, the limit rotating speed of the motor is higher, the efficiency is high, and the service life is longer.
The technical scheme provided by the invention is as follows:
a magnetic suspension single-disk motor comprises a base, a mounting seat, a stator, a rotor assembly, a rotating shaft and a magnetic bearing group, wherein the mounting seat is fixed on the base, and a first containing cavity and a second containing cavity which are mutually communicated and coaxial are arranged in the mounting seat; the stator is positioned in the first cavity, and one end of the stator is fixed with the base;
the rotating shaft penetrates through the second accommodating cavity and is coaxially arranged with the second accommodating cavity;
the rotor assembly is fixed with the end face of the rotating shaft and is positioned in the first containing cavity, and the rotor assembly and the stator are arranged at intervals to form an air gap;
the magnetic bearing group comprises an axial magnetic bearing and a radial magnetic bearing, the axial magnetic bearing is positioned in the first accommodating cavity and fixed with the mounting seat, and the axial magnetic bearing corresponds to the rotor assembly to control the axial freedom degree of the rotor assembly and the rotating shaft; the radial magnetic bearing is positioned in the second cavity and fixed with the mounting seat, and the radial magnetic bearing corresponds to the rotating shaft so as to control the radial degree of freedom of the rotating shaft.
Further, the rotor subassembly is including the permanent magnet, rotor core and the thrust dish that stack in proper order set up, the permanent magnet with the stator interval sets up and forms the air gap, the thrust dish with the terminal surface of pivot is fixed.
Further, the rotor subassembly include the permanent magnet and with the thrust dish of permanent magnet direct fixation, the permanent magnet with the stator interval sets up and forms the air gap, the thrust dish with the terminal surface of pivot is fixed.
Furthermore, two end faces of the thrust disc are respectively provided with corresponding axial magnetic stators, the two axial magnetic stators are fixed on the mounting seat and are arranged at intervals with the corresponding end faces of the thrust disc to form air gaps, and the thrust disc and the two axial magnetic stators jointly form the axial magnetic bearing.
Further, the radial magnetic bearing comprises a radial magnetic stator and a radial magnetic rotor, the radial magnetic stator is fixed with the mounting seat, and the radial magnetic rotor is sleeved on the rotating shaft and corresponds to the radial magnetic stator.
Furthermore, the magnetic suspension single-disc motor also comprises a first protection bearing group and a second protection bearing group, wherein the first protection bearing group is sleeved on the outer circular surface of the thrust disc in a clearance manner; the second protection bearing group is positioned at the opening end of the mounting seat and sleeved on the rotating shaft.
Further, a gap formed between the radial magnetic stator and the radial magnetic rotor is smaller than a gap between the second protective bearing set and the rotating shaft.
Further, a shaft sleeve is further arranged between the second protection bearing group and the rotating shaft, and the shaft sleeve is used for preventing the rotating shaft from contacting with an inner ring of the second protection bearing group.
Furthermore, the second protection bearing group is at least provided with two groups, and the second protection bearing group is sleeved on the shaft sleeve along the axial direction in a side-by-side clearance manner.
The beneficial effect that adopts this technical scheme to reach does:
the magnetic suspension bearing is adopted to replace the traditional common bearing, so that the rotating shaft system is in a suspension state when the disc type motor rotates, no contact type friction exists, the limit rotating speed of the motor is higher, the efficiency is high, and the service life is longer; meanwhile, the radial magnetic bearing is arranged on one side of the rotor assembly, so that the rotating shaft does not need to penetrate through the rotor assembly and the stator, the outer diameter of the motor can be smaller, the single-end supporting structure is simple, and the assembling and the disassembling are convenient.
This scheme still provides the fan of installing above-mentioned motor on providing magnetic suspension single disc motor promptly basis to this improves the result of use of fan, promotes the radiating excellence of fan.
Drawings
Fig. 1 is a schematic structural diagram of a magnetic suspension single-disc motor, which shows the internal structural components of the motor.
Fig. 2 is a structural view of the rotor core and the thrust disk being fixed.
Fig. 3 is a mounting structure diagram of the radial magnetic bearing, the second protective bearing set and the rotating shaft.
Wherein: the magnetic bearing comprises a base 10, a mounting seat 20, a first base 21, a second base 22, a stator 30, a permanent magnet 41, a rotor core 42, a thrust disc 43, an axial magnetic bearing 51, a radial magnetic bearing 52, a first protective bearing group 61, a second protective bearing group 62, a shaft sleeve 63, a rotating shaft 100, a radial magnetic stator 521 and a radial magnetic rotor 522.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
The embodiment provides a magnetic suspension single-disc motor, uses the magnetic suspension technology in the disc motor, makes pivot 100 in the disc motor be in the suspension state when work is rotatory, makes the limit rotational speed of this disc motor higher than the disc motor that adopts general bearing, and magnetic suspension bearing contactless friction does not need the bearing lubrication simultaneously, and the characteristics that the noise is low accord with present user demand more, have very big promotion effect to the life of extension disc motor simultaneously.
Referring to fig. 1-2, in particular, the magnetic suspension single disc type motor comprises a base 10, a mounting base 20, a stator 30, a rotor assembly, a rotating shaft 100 and a magnetic bearing set.
The mounting base 20 is fixedly connected to the base 10, and the mounting base 20 is a split structure, that is, the mounting base 20 includes a first base body 21 and a second base body 22, the first base body 21 is directly fixed to the base 10, and the second base body 22 is fixed to the first base body 21.
The first seat body 21 and the second seat body 22 mentioned here are both hollow structures, so that after the base 10, the first seat body 21 and the second seat body 22 are installed, a first cavity and a second cavity are formed in the installation seat 20; the two cavities are mutually communicated and coaxial; the first and second cavities herein mainly provide installation spaces for the stator 30, the rotor assembly, the rotating shaft 100, and the magnetic bearing set.
Specifically, the stator 30 is located in the first cavity, and one end of the stator 30 is fixed to the base 10; the rotating shaft 100 penetrates through the second accommodating cavity and is arranged coaxially with the second accommodating cavity; the rotor assembly is fixed with the end face of the rotating shaft 100 and is positioned in the first cavity, and meanwhile, the rotor assembly and the stator 30 are arranged at intervals to form an air gap; the magnetic bearing assembly includes an axial magnetic bearing 51 and a radial magnetic bearing 52, where the axial magnetic bearing 51 and the radial magnetic bearing 52 are provided for the purpose of mainly achieving axial control and radial control of the rotating shaft 100; specifically, the axial magnetic bearing 51 is located in the first cavity and fixed to the first base 21, and the axial magnetic bearing 51 corresponds to the rotor assembly to control the axial degree of freedom of the rotating shaft 100; the radial magnetic bearing 52 is located in the second cavity and fixed to the second housing 22, and the radial magnetic bearing 52 corresponds to the rotating shaft 100 to control the radial degree of freedom of the rotating shaft 100.
By adopting the magnetic suspension bearing to replace the traditional common bearing, the rotating shaft 100 is in a suspension state when the disc type motor rotates, and the disc type motor is free of contact, higher in limit rotating speed, high in efficiency and longer in service life; meanwhile, the radial magnetic bearing 52 is only arranged on one side of the rotor assembly, so that the rotating shaft 100 does not need to penetrate through the rotor assembly and the stator 30, the overall size of the motor can be smaller without influencing output, and different installation requirements are met.
In this embodiment, the mentioned rotor assembly includes a permanent magnet 41, a rotor core 42 and a thrust disc 43, and the three components are sequentially stacked, that is, the permanent magnet 41 is fixed on the rotor core 42, and the rotor core 42 is fixed on the thrust disc 43; it should be noted that the permanent magnet 41 is disposed opposite to and spaced from the stator 30, so that an air gap is formed between the permanent magnet 41 and the stator 30, and the thrust disc 43 is fixed to the end face of the rotating shaft 100; this facilitates the permanent magnet 41 to rotate the shaft 100 under the action of the magnetic field.
Through to above structural design for disc motor's eddy current loss is less, and the intensification rate of rotor subassembly is lower simultaneously, has very big promotion effect to disc motor's output efficiency.
In the actual application process, under the condition that other structures are not changed, the design of the rotor core 42 can be removed, namely the rotor assembly only comprises the permanent magnet 41 and the thrust disc 43, namely the permanent magnet 41 is directly fixed with the thrust disc 43, so that the disc type motor is more compact in axial size, lighter in weight and capable of further improving the rotating speed.
In the present embodiment, the axial magnetic bearing 51 controls the axial direction of the rotating shaft 100 by the thrust disk 43, and it can be understood that the thrust disk 43 substantially belongs to the component of the axial magnetic bearing 51.
Specifically, two end faces of the thrust disc 43 are respectively provided with corresponding axial magnetic stators, the two axial magnetic stators are fixed on the first seat 21 and are arranged at intervals with the corresponding end face of the thrust disc 43 to form an air gap, at this time, the thrust disc 43 is equal to an axial magnetic rotor in the axial magnetic bearing 51, and the thrust disc 43 is suspended in the first accommodating cavity under the action of the axial magnetic stators, so that the rotating shaft 100 is in a suspended state.
Optionally, a first protection bearing set 61 is further disposed on the outer circumferential surface of the thrust disc 43 in a clearance fit manner, so that when the disc motor does not operate, that is, the thrust disc 43 does not rotate, the first protection bearing set 61 supports the thrust disc 43 to provide a certain supporting force.
Referring to fig. 1 and 3, the radial magnetic bearing 52 provided in the present embodiment is only disposed at one end of the rotor assembly, and unlike the conventional manner in which ordinary bearings are disposed at the left and right ends of the rotor assembly, the radial magnetic bearing 52 is only disposed at one end, which has a great promoting effect on reducing the volume of the entire disc motor.
The radial magnetic bearing 52 includes a radial magnetic stator 521 and a radial magnetic rotor 522, wherein the radial magnetic stator 521 is fixed on the second base 22, and the radial magnetic rotor 522 is sleeved on the rotating shaft 100 and corresponds to the radial magnetic stator 521.
In this embodiment, there are two designed radial magnetic bearings 52, the two radial magnetic bearings 52 are coaxially arranged at intervals, each radial magnetic bearing 52 includes a radial magnetic stator 521 and a radial magnetic rotor 522, and the two radial magnetic rotors 522 sleeved on the rotating shaft 100 are also arranged at intervals under the condition that the two radial magnetic stators 521 are arranged at intervals, which is beneficial to saving cost and stabilizing output.
Of course, referring to fig. 1, in the actual application process, two radial magnetic rotors 522 may be integrally designed, and compared with the design in which two radial magnetic rotors 522 are separated, the integral structure of the two radial magnetic rotors 522 is simpler, and meanwhile, the operation of an operator is facilitated during assembly, which is beneficial to saving the assembly time.
Optionally, referring to fig. 1 and fig. 3, in order to protect the rotating shaft 100, in this embodiment, a second protective bearing set 62 is further provided, and the second protective bearing set 62 is located at an open end of the second seat 22 and is sleeved on the rotating shaft 100; the second protective bearing set 62 is provided herein primarily for safety purposes, such as in the event of failure of the axial magnetic bearing, the second protective bearing set 62 may limit the axial freedom of the shaft 100 to protect the internal components of the disc motor.
It should be noted that the gap formed between the radial magnetic stator 521 and the radial magnetic rotor 522 should be smaller than the gap between the second protective bearing set 62 and the rotating shaft 100.
Optionally, a shaft sleeve 63 is further disposed between the second protective bearing group 62 and the rotating shaft 100, and the shaft sleeve 63 is used for preventing the rotating shaft 100 from contacting an inner ring of the second protective bearing group 62; namely, when the disc motor does not work, the rotating shaft 100 is directly contacted with the shaft sleeve 63 instead of being contacted and rubbed with the inner ring of the second protective bearing group 62, and the friction damage of the rotating shaft 100 is effectively avoided.
In this embodiment, at least two second protection bearing sets 62 are provided, and the second protection bearing sets 62 are axially sleeved on the shaft sleeve 63 in parallel with a clearance.
This scheme still provides a fan of installing above-mentioned disk motor on providing magnetic suspension single disk motor promptly basis, improves the result of use of fan through utilizing magnetic suspension single disk motor, promotes the radiating excellence of fan.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A magnetic suspension single-disk motor comprises a base (10), a mounting seat (20), a stator (30), a rotor assembly, a rotating shaft (100) and a magnetic bearing assembly, and is characterized in that,
the mounting seat (20) is fixed on the base (10), and a first accommodating cavity and a second accommodating cavity which are mutually communicated and coaxial are arranged in the mounting seat (20); the stator (30) is positioned in the first cavity, and one end of the stator (30) is fixed with the base (10);
the rotating shaft (100) penetrates through the second accommodating cavity and is coaxially arranged with the second accommodating cavity;
the rotor assembly is fixed with the end face of the rotating shaft (100) and is positioned in the first cavity, and the rotor assembly and the stator (30) are arranged at intervals to form an air gap;
the magnetic bearing set comprises an axial magnetic bearing (51) and a radial magnetic bearing (52), the axial magnetic bearing (51) is positioned in the first cavity and fixed with the mounting seat (20), and the axial magnetic bearing (51) corresponds to the rotor assembly to control the axial freedom degree of the rotor assembly and the rotating shaft (100); the radial magnetic bearing (52) is positioned in the second cavity and fixed with the mounting seat (20), and the radial magnetic bearing (52) corresponds to the rotating shaft (100) to control the radial degree of freedom of the rotating shaft (100);
the rotor assembly comprises a permanent magnet (41) and a thrust disc (43) directly fixed with the permanent magnet (41), the permanent magnet (41) and the stator (30) are arranged at intervals to form an air gap, and the thrust disc (43) is fixed with the end face of the rotating shaft (100);
two end faces of the thrust disc (43) are respectively provided with corresponding axial magnetic stators, the two axial magnetic stators are fixed on the mounting seat (20) and are arranged at intervals with the corresponding end faces of the thrust disc (43) to form air gaps, and the thrust disc (43) and the two axial magnetic stators jointly form the axial magnetic bearing (51);
the radial magnetic bearing (52) comprises a radial magnetic stator (521) and a radial magnetic rotor (522), the radial magnetic stator (521) is fixed with the mounting seat (20), and the radial magnetic rotor (522) is sleeved on the rotating shaft (100) and corresponds to the radial magnetic stator (521);
the magnetic suspension single-disc motor further comprises a first protection bearing group (61) and a second protection bearing group (62), and the first protection bearing group (61) is sleeved on the outer circular surface of the thrust disc (43) in a clearance mode; the second protection bearing group (62) is positioned at the opening end of the mounting seat (20) and sleeved on the rotating shaft (100);
a gap formed between the radial magnetic stator (521) and the radial magnetic rotor (522) is smaller than a gap between the second protective bearing group (62) and the rotating shaft (100).
2. The magnetic suspension single-disc motor according to claim 1, wherein the rotor assembly comprises a permanent magnet (41), a rotor core (42) and a thrust disc (43) which are sequentially stacked, the permanent magnet (41) and the stator (30) are arranged at intervals to form an air gap, and the thrust disc (43) is fixed with the end face of the rotating shaft (100).
3. A magnetic single-disc motor according to claim 2, characterized in that a bushing (63) is further provided between the second protective bearing set (62) and the rotating shaft (100), said bushing (63) being used to prevent the rotating shaft (100) from contacting the inner ring of the second protective bearing set (62).
4. A magnetic levitation single-disc motor as recited in claim 3, wherein at least two second protection bearing sets (62) are provided, and the second protection bearing sets (62) are axially sleeved on the shaft sleeve (63) in a side-by-side clearance manner.
5. A fan, characterized in that a magnetically levitated single-disc motor as claimed in claim 4 is arranged in the fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011454794.0A CN112531958B (en) | 2020-12-09 | 2020-12-09 | Magnetic suspension single disc type motor and fan with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011454794.0A CN112531958B (en) | 2020-12-09 | 2020-12-09 | Magnetic suspension single disc type motor and fan with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112531958A CN112531958A (en) | 2021-03-19 |
| CN112531958B true CN112531958B (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011454794.0A Active CN112531958B (en) | 2020-12-09 | 2020-12-09 | Magnetic suspension single disc type motor and fan with same |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113965010A (en) * | 2021-09-18 | 2022-01-21 | 东睦新材料集团股份有限公司 | Motor with magnetic suspension bearing and preparation method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1188943A2 (en) * | 2000-09-13 | 2002-03-20 | Ebara Corporation | Magnetic levitation rotating machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102007017644B4 (en) * | 2007-04-13 | 2020-01-30 | Minebea Mitsumi Inc. | hybrid bearings |
| CN103296792B (en) * | 2012-02-22 | 2015-10-28 | 深圳华任兴科技有限公司 | Have the disc type electric machine of amorphous iron alloy axial magnetic circuit and manufacture method thereof and stator module |
| CN204283732U (en) * | 2014-09-02 | 2015-04-22 | 江苏大学 | A kind of vertical shaft maglev wind power generator |
| CN205882925U (en) * | 2016-06-30 | 2017-01-11 | 天津荣亨集团股份有限公司 | Disk type motor's magnetic suspension bearing |
| CN207251431U (en) * | 2017-07-20 | 2018-04-17 | 江苏磁谷科技股份有限公司 | Desk permanent-magnet coupling mechanism, desk permanent-magnet coupled speed regulator, magnetic coupling arrangements for speed regulation, brushless double feed coupling transmission device |
| CN108390542A (en) * | 2018-05-04 | 2018-08-10 | 刁俊起 | It is a kind of to start, generate electricity, speed adjustable integrated device |
| CN211209493U (en) * | 2019-12-31 | 2020-08-07 | 坎德拉（深圳）科技创新有限公司 | Magnetic suspension flywheel energy storage device |
| CN111799927B (en) * | 2020-07-17 | 2023-03-24 | 珠海格力电器股份有限公司 | Rotating shaft supporting and protecting structure, magnetic suspension bearing supporting system and motor |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1188943A2 (en) * | 2000-09-13 | 2002-03-20 | Ebara Corporation | Magnetic levitation rotating machine |
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| CN112531958A (en) | 2021-03-19 |
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Denomination of invention: A magnetic levitation single disc motor and a fan thereof Granted publication date: 20220419 Pledgee: Wuhan Jiangxia sub branch of Bank of Communications Co.,Ltd. Pledgor: GREATALL POWER Co.,Ltd. Registration number: Y2024980010361 |