CN202789593U - Permanent magnetic synchronous magnetic levitation high-speed motor direct-driven air compressor - Google Patents
Permanent magnetic synchronous magnetic levitation high-speed motor direct-driven air compressor Download PDFInfo
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- CN202789593U CN202789593U CN 201220481778 CN201220481778U CN202789593U CN 202789593 U CN202789593 U CN 202789593U CN 201220481778 CN201220481778 CN 201220481778 CN 201220481778 U CN201220481778 U CN 201220481778U CN 202789593 U CN202789593 U CN 202789593U
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Abstract
The utility model discloses a permanent magnetic synchronous magnetic levitation high-speed motor direct-driven air compressor which comprises a motor main shaft, a motor stator, a permanent magnet motor rotor, a shell, a compressor impeller and a pair of bearing assemblies respectively arranged at the front and rear ends of the shell. The motor stator is sleeved in the shell, the motor main shaft is placed in the motor stator and supported on the shell through the pair of bearing assemblies, and the compressor impeller is assembled at the front end of the motor main shaft. The bearing assemblies are magnetic levitation bearing assemblies. The permanent magnet motor rotor comprises a plurality of permanent magnetic stripes and a plurality of magnetic stripes arranged on the peripheral face of the motor main shaft. The permanent magnetic stripes are embedded into a magnetic stripe fixing groove. The permanent magnetic synchronous magnetic levitation high-speed motor direct-driven air compressor has the advantages of simple structure, small volume, good controllability, low energy consumption and low maintenance cost.
Description
Technical field
The utility model relates to air compressor, relates in particular to the permanent-magnet synchronous magnetic suspension high speed motor and directly drives air compressor.
Background technique
Air compressor is the high-energy equipment that is widely used in the fields such as metallurgy, mine, chemical industry, natural gas transport and environmental treatment.According to statistics, the electric system energy consumption of air compressor accounts for more than 30% of industrial department electric energy total flow.Because the air compressor total energy consumption is large, the energy saving economy benefit that produces by increasing work efficiency is very remarkable, and the high efficiency electric of now China's production only accounts for about 1% of motor Total sales volume, therefore large in China's air compressor industry output, energy consumption is high, relate under the wide current conditions of national economy, the energy-conservation air compressor of exploitation high-speed and high-efficiency seems particularly urgent.
Traditional air compressor product extensively adopts " middle slowspeed machine---gear speedup case---impeller " pattern, its motor speed is low, the gear speedup case complex structure, volume is large, noise is high, energy consumption is high, speed regulating control is difficult, the digital intelligent degree is low, and the system maintenance cost is higher.
Existing high-speed electric expreess locomotive can be divided into AC induction motor and permagnetic synchronous motor according to type.Compare with AC induction motor, the permagnetic synchronous motor power factor is high, and specific power is large, high working efficiency, energy conservation and consumption reduction effects is obvious, be very suitable for improving working speed and the working efficiency of motor, if can adopt permanent magnetic asyn high-speed electric machine directly to drive the structure fabrication air compressor of impeller, will greatly improve the properties of air compressor product, but, be subjected to the restriction of existing permanent magnetic asyn high-speed electric machine self structure, this structure of directly driving also can't directly be used, and reason is as follows:
1, the rotor structure of existing permanent magnetic asyn high-speed electric machine can't satisfy the needed high rotating speed of direct driving air compressor and high strength requirement.Air compressor needs very large output power usually, the radial dimension of motor rotor construction is larger, the centrifugal force that rotor structure need to bear when running up is corresponding also very large, but the rotor structure of existing permanent magnetic asyn high-speed electric machine is difficult to satisfy this high strength demand.At present, the rotor structure of permanent magnetic asyn high-speed electric machine mainly contains integrated type magnet steel, surface-mount type and adds fixedly two kinds of magnet steel of carbon fiber.The deficiency of integrated type magnet steel is, magnetic steel sleeve installs to when running up on the main shaft and causes magnitude of interference to reduce because centrifugal force expands annular magnetic steel, thereby cause the positive pressure between magnet steel and the rotor to reduce, transferable frictional force and moment of torsion reduce, the circumferencial direction that the relative main shaft of rotor occurs easily slides, if and increase the magnitude of interference add in advance, the faults such as fracture may appear in the rotor magnetic steel of fragility; Surface-mount type add carbon fiber fixedly the main weakness of magnetic steel structure be: carbon fiber parcel rotor magnetic steel is unfavorable for the heat radiation of rotor very much, if and the too high meeting of temperature of rotor makes the permanent magnet demagnetization cause the electric motors function fault, and after carbon fiber micro-breakage occurs in the long or assembly process between in use, be easy under centrifugal action constantly expansion when running up, finally cause rotor magnetic steel to throw away even explosive accident occurs.
2, the spindle bearing structure of existing permanent magnetic asyn high-speed electric machine is not suitable with the working condition requirements such as the air compressor rotating speed is high, axial load is large.The bearing that adopts on the existing high-speed electric expreess locomotive mainly contains rolling bearing, liquid sliding bearing and pneumatic bearing etc.The advantage of rolling bearing is to realize easily standardization and seriation production, but the high-speed rotary change of team of impeller produces very large axial force during owing to air compressor work, when the thrust bearing of Rolling Bearing Types is used for bearing the air compressor thrust load, the centrifugal force of rolling element can produce very large dynamic load to raceway when running up, and causes temperature rise to increase even burns bearing or rolling element throws away bearing and causes the accident outward.Liquid sliding bearing rigidity is high, bearing capacity is large, and liquid medium wearing and tearing heating causes reactive loss large during still owing to high speed, has reduced the effective output of motor, is not suitable with the large demanded power output of air compressor.Pneumatic bearing is conducive to realize high-speed, but rigidity is low, bearing capacity is limited, is only applicable to light-duty rotor, can not satisfy the working condition requirement of air compressor.Except the reason of bearing itself, the thrust bearing in the existing high-speed electric expreess locomotive separates with radial bearing, causes the electric machine structure size large, and axially span is large, is unfavorable for improving the critical working speed of motor, is not suitable with the high rotating speed requirement of air compressor; Secondly, because the bearing structure at motor two ends is asymmetric, be unfavorable for bearings at both ends is made same structure, bearing interchangeability is bad, is unfavorable for reducing manufacture cost, shortens the manufacture cycle.
The model utility content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, provides a kind of permanent-magnet synchronous magnetic suspension high speed motor simple in structure, that volume is little, controllability good, energy consumption is low, maintenance cost is low directly to drive air compressor.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of permanent-magnet synchronous magnetic suspension high speed motor directly drives air compressor, comprise electric machine main shaft, motor stator, the permanent magnet motor rotor, housing, compressor impeller and a pair of bearing assembly that is divided into the housing rear and front end, described motor stator is sheathed in the housing, described electric machine main shaft places in the motor stator, and be supported on the housing by the pair of bearings assembly, described compressor impeller is installed in described electric machine main shaft front end, described bearing assembly is the magnetic suspension bearing assembly, described permanent magnet motor rotor comprises a plurality of permanent magnet magnetic stripes and a plurality of magnetic stripe fixed grooves of being located on the described electric machine main shaft outer circumferential face, and described permanent magnet magnetic stripe is embedded in the described magnetic stripe fixed groove.
The mutual wedging of described permanent magnet magnetic stripe and magnetic stripe fixed groove cooperates.
The cross section of described permanent magnet magnetic stripe and magnetic stripe fixed groove is the inverted trapezoidal that cooperatively interacts, and two bights on the long base of described inverted trapezoidal are provided with circular arc chamfering.
Described air compressor also comprises two rotor dynamic balancing rings, and described two rotor dynamic balancing rings are divided into the permanent magnet motor two ends of rotor, and to described permanent magnet magnetic stripe axial limiting.
Described pair of bearings assembly structure is identical and be symmetrical arranged.
Described bearing assembly comprises bearing support, radial magnetic bearing, thrust magnetic suspension bearing, sensory package and end-cap assembly, described bearing support is fixedly connected with described housing, described radial magnetic bearing is installed in the bearing support, described thrust magnetic suspension bearing is installed in the end-cap assembly, and described sensory package is located between radial magnetic bearing and the thrust magnetic suspension bearing.
Described radial magnetic bearing comprises magnetic suspension bearing stator and magnetic suspension bearing rotor, and described magnetic suspension bearing stator is fixed in the described bearing support, and described magnetic suspension bearing rotor places in the magnetic suspension bearing stator and is fixed on the described electric machine main shaft.
Described thrust magnetic suspension bearing comprises thrust button, thrust magnetic suspension coil and thrust impeller, described thrust impeller is fixed in the described end-cap assembly, described thrust magnetic suspension coil is set around on the described thrust impeller, and described thrust button is located at described thrust magnetic suspension coil one side and is fixed on the described electric machine main shaft.
Described sensory package comprises sensor, sensor holder and a pair of air ring, and described sensor holder is fixed on the described bearing support, and described a pair of air ring is fixed in the sensor holder both sides, and described sensor is located between a pair of air ring.
Described end-cap assembly comprises lid and auxiliary bearing, and described lid covers at the thrust magnetic suspension bearing and is fixedly connected with outward and with described bearing support with sensory package, and described auxiliary bearing is supported between described lid and the electric machine main shaft.
Compared with prior art, the utility model has the advantage of:
Permanent-magnet synchronous magnetic suspension high speed motor of the present utility model directly drives air compressor, the permanent magnet motor rotor adopts the permanent magnet magnetic stripe to be embedded in the interior structure of magnetic stripe fixed groove, make it under the operating mode of large scale, high rotating speed, large centrifugal force, possess enough intensity, thereby can satisfy the work requirements of air compressor, created condition for improving the air compressor maximum speed, and owing to do not need the external carbon Filament-wound Machine to fix, be conducive to the rotor heat radiation and reduce temperature rise; Simultaneously, the utility model adopts magnetic suspension bearing assembly supporting motor main shaft, and the gap is large between the stator of magnetic suspension bearing and rotor, and is not high to machining and matching requirements, reduced processing and assembly cost, shortened the manufacture cycle; Magnetic suspension bearing does not have contact wear, has improved effective output and the working efficiency of motor; By the architecture advances to the permanent magnet motor rotor, and be equipped with only bearing support system, so that compressor impeller can directly be installed on the electric machine main shaft, by electric machine main shaft direct driving compressor machine impeller, thereby realize the permanent-magnet synchronous magnetic suspension high speed motor to the direct driving of air compressor, make that the designs simplification of air compressor, volume reduce, Energy Intensity Reduction, maintenance cost reduce.The mutual wedging of permanent magnet magnetic stripe and magnetic stripe fixed groove cooperates, it is easy for installation, join strength is high, stable and reliable operation, when having overcome the integral rotor interference and having run up to the main shaft because centrifugal expansion causes magnitude of interference to reduce, the shortcoming that the relative main shaft of rotor slides, and overcome surface-mount type add carbon fiber fixedly the rotor of magnetic steel structure be unfavorable for the shortcoming of dispelling the heat, avoid causing demagnetization because of the rotor temperature rise height, also overcome surface-mount type add carbon fiber fixedly the rotor of magnetic steel structure greatly promoted Security in the shortcoming that large centrifugal action lower rotor part magnet steel easily is thrown out of; When the cross section of permanent magnet magnetic stripe and magnetic stripe fixed groove is the inverted trapezoidal that cooperatively interacts, two bights on the long base of inverted trapezoidal are provided with circular arc chamfering, make in the rotating shaft corresponding concave structure evenly excessive by circular arc, under the high speed operation state, the centrifugal stress distribution uniform that permanent magnet magnetic stripe and magnetic stripe fixed groove are subject to, avoid problem of stress concentration, improved join strength and reliability.The pair of bearings assembly structure is identical and be symmetrical arranged, and has improved the interchangeability of bearing assembly, is conducive to batch production, has reduced the manufacturing processing cost, and has saved traditional independent thrust bearing, has simplified electric machine structure.
Description of drawings
Fig. 1 is main sectional structure schematic representation of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Each label represents among the figure:
1, electric machine main shaft; 2, motor stator; 3, permanent magnet motor rotor; 4, housing; 5, compressor impeller; 6, bearing assembly; 7, rotor dynamic balancing ring; 31, permanent magnet magnetic stripe; 32, magnetic stripe fixed groove; 61, bearing support; 62, radial magnetic bearing; 63, thrust magnetic suspension bearing; 64, sensory package; 65, end-cap assembly; 621, magnetic suspension bearing stator; 622, magnetic suspension bearing rotor; 631, thrust button; 632, thrust magnetic suspension coil; 633, thrust impeller; 641, sensor; 642, sensor holder; 643, air ring; 651, lid; 652, auxiliary bearing.
Embodiment
Fig. 1 and Fig. 2 show a kind of permanent-magnet synchronous magnetic suspension high speed motor of the present utility model and directly drive air compressor embodiment, this air compressor comprises electric machine main shaft 1, motor stator 2, permanent magnet motor rotor 3, housing 4, compressor impeller 5 and a pair of bearing assembly 6 that is divided into housing 4 rear and front ends, motor stator 2 is sheathed in the housing 4, electric machine main shaft 1 places in the motor stator 2, and be supported on the housing 4 by pair of bearings assembly 6, compressor impeller 5 is installed in electric machine main shaft 1 front end, bearing assembly 6 is the magnetic suspension bearing assembly, permanent magnet motor rotor 3 comprises a plurality of permanent magnet magnetic stripes 31 and a plurality of magnetic stripe fixed grooves 32 of being located on electric machine main shaft 1 outer circumferential face, permanent magnet magnetic stripe 31 is embedded in the magnetic stripe fixed groove 32, adopt the permanent magnet motor rotor 3 of mosaic structure, make it in large scale, high rotating speed, possesses enough intensity under the operating mode of large centrifugal force, thereby can satisfy the work requirements of air compressor, get ready for improving the air compressor maximum (top) speed; Simultaneously, the utility model adopts magnetic suspension bearing assembly supporting motor main shaft 1, can improve the working speed of electric machine main shaft 1, reduces the temperature rise under the high speed operation state, reduces the processing and assembling required precision, saves cost, reduces power consumption, increases work efficiency; By the architecture advances to permanent magnet motor rotor 3, and be equipped with only bearing support system, so that compressor impeller 5 can directly be installed on the electric machine main shaft 1, by electric machine main shaft 1 direct driving compressor machine impeller 5, thereby realize the permanent-magnet synchronous magnetic suspension high speed motor to the direct driving of air compressor, the designs simplification of air compressor, volume are reduced, noise weakens, Energy Intensity Reduction, controllability promote, maintenance cost reduces.
In the present embodiment, permanent magnet magnetic stripe 31 and the 32 mutual wedgings of magnetic stripe fixed groove cooperate, it is easy for installation, join strength is high, stable and reliable operation, when having overcome the integral rotor interference and having run up to the main shaft because centrifugal expansion causes magnitude of interference to reduce, the shortcoming that the relative main shaft of rotor meeting slides, and overcome surface-mount type add carbon fiber fixedly the rotor of magnetic steel structure be unfavorable for the shortcoming of dispelling the heat, avoid causing demagnetization because of the rotor temperature rise height, also overcome surface-mount type add carbon fiber fixedly the rotor of magnetic steel structure greatly promoted Security in the shortcoming that large centrifugal action lower rotor part magnet steel easily is thrown out of.In the present embodiment, the cross section of permanent magnet magnetic stripe 31 and magnetic stripe fixed groove 32 is the inverted trapezoidal that cooperatively interacts, two bights on the long base of inverted trapezoidal are provided with circular arc chamfering, make in the rotating shaft corresponding concave structure evenly excessive by circular arc, kind of structure so that electric machine main shaft 1 under the high speed operation state, the centrifugal stress that permanent magnet magnetic stripe 31 and magnetic stripe fixed groove 32 are subject to distributes the most even, has avoided problem of stress concentration, has further improved join strength and reliability.
In the present embodiment, air compressor also comprises two rotor dynamic balancing rings 7, two rotor dynamic balancing rings 7 are divided into permanent magnet motor rotor 3 two ends, and two rotor dynamic balancing rings 7 are for the dynamic balancing of adjusting electric machine main shaft 1, on the other hand to permanent magnet magnetic stripe 31 axial limitings on the one hand.
In the present embodiment, pair of bearings assembly 6 structures are identical and be symmetrical arranged, and can improve the interchangeability of bearing assembly 6, are conducive to batch production, reduced the manufacturing processing cost, and saved traditional independent thrust bearing, simplified electric machine structure.
In the present embodiment, bearing assembly 6 comprises bearing support 61, radial magnetic bearing 62, thrust magnetic suspension bearing 63, sensory package 64 and end-cap assembly 65, bearing support 61 is fixedly connected with housing 4, radial magnetic bearing 62 is installed in the bearing support 61, thrust magnetic suspension bearing 63 is installed in the end-cap assembly 65, and sensory package 64 is located between radial magnetic bearing 62 and the thrust magnetic suspension bearing 63.Radial magnetic bearing 62 comprises magnetic suspension bearing stator 621 and magnetic suspension bearing rotor 622, and magnetic suspension bearing stator 621 is fixed in the bearing support 61, and magnetic suspension bearing rotor 622 places in the magnetic suspension bearing stator 621 and is fixed on the electric machine main shaft 1.Thrust magnetic suspension bearing 63 comprises thrust button 631, thrust magnetic suspension coil 632 and thrust impeller 633, thrust impeller 633 is fixed in the end-cap assembly 65, thrust magnetic suspension coil 632 is set around on the thrust impeller 633, and thrust button 631 is located at thrust magnetic suspension coil 632 1 sides and is fixed on the electric machine main shaft 1.Sensory package 64 comprises sensor 641, sensor holder 642 and a pair of air ring 643, and sensor holder 642 is fixed on the bearing support 61, and a pair of air ring 643 is fixed in sensor holder 642 both sides, and sensor 641 is located between a pair of air ring 643.Sensor 641 is by detecting radially floatation volume and send to the magnetic suspension bearing control system of electric machine main shaft 1, and control system is regulated and control the size of current of magnetic suspension bearing coil accordingly, thereby adjusts the position of electric machine main shaft 1.
In the present embodiment, end-cap assembly 65 comprises lid 651 and auxiliary bearing 652, lid 651 covers at thrust magnetic suspension bearing 63 and is fixedly connected with outward and with bearing support 61 with sensory package 64, auxiliary bearing 652 is supported between lid 651 and the electric machine main shaft 1, before the magnetic suspension bearing energising and after the outage, by auxiliary bearing 652 supporting motor main shafts 1.
Although the utility model discloses as above with preferred embodiment, yet is not to limit the utility model.Any those of ordinary skill in the art, in the situation that does not break away from the technical solutions of the utility model scope, all can utilize the technology contents of above-mentioned announcement that technical solutions of the utility model are made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solutions of the utility model, all should drop in the scope of technical solutions of the utility model protection any simple modification, equivalent variations and modification that above embodiment does according to the utility model technical spirit.
Claims (10)
1. a permanent-magnet synchronous magnetic suspension high speed motor directly drives air compressor, comprise electric machine main shaft (1), motor stator (2), permanent magnet motor rotor (3), housing (4), compressor impeller (5) and a pair of bearing assembly (6) that is divided into housing (4) rear and front end, described motor stator (2) is sheathed in the housing (4), described electric machine main shaft (1) places in the motor stator (2), and be supported on the housing (4) by pair of bearings assembly (6), it is characterized in that: described compressor impeller (5) is installed in described electric machine main shaft (1) front end, described bearing assembly (6) is the magnetic suspension bearing assembly, described permanent magnet motor rotor (3) comprises a plurality of permanent magnet magnetic stripes (31) and is located at a plurality of magnetic stripe fixed grooves (32) on described electric machine main shaft (1) outer circumferential face that described permanent magnet magnetic stripe (31) is embedded in the described magnetic stripe fixed groove (32).
2. permanent-magnet synchronous magnetic suspension high speed motor according to claim 1 directly drives air compressor, it is characterized in that: described permanent magnet magnetic stripe (31) and magnetic stripe fixed groove (32) mutually wedging cooperate.
3. permanent-magnet synchronous magnetic suspension high speed motor according to claim 2 directly drives air compressor, it is characterized in that: the cross section of described permanent magnet magnetic stripe (31) and magnetic stripe fixed groove (32) is the inverted trapezoidal that cooperatively interacts, and two bights on the long base of described inverted trapezoidal are provided with circular arc chamfering.
According to claim 1 in 3 each described permanent-magnet synchronous magnetic suspension high speed motor directly drive air compressor, it is characterized in that: described air compressor also comprises two rotor dynamic balancing rings (7), described two rotor dynamic balancing rings (7) are divided into permanent magnet motor rotor (3) two ends, and to described permanent magnet magnetic stripe (31) axial limiting.
According to claim 1 in 3 each described permanent-magnet synchronous magnetic suspension high speed motor directly drive air compressor, it is characterized in that: described pair of bearings assembly (6) structure is identical and be symmetrical arranged.
6. permanent-magnet synchronous magnetic suspension high speed motor according to claim 5 directly drives air compressor, it is characterized in that: described bearing assembly (6) comprises bearing support (61), radial magnetic bearing (62), thrust magnetic suspension bearing (63), sensory package (64) and end-cap assembly (65), described bearing support (61) is fixedly connected with described housing (4), described radial magnetic bearing (62) is installed in the bearing support (61), described thrust magnetic suspension bearing (63) is installed in the end-cap assembly (65), and described sensory package (64) is located between radial magnetic bearing (62) and the thrust magnetic suspension bearing (63).
7. permanent-magnet synchronous magnetic suspension high speed motor according to claim 6 directly drives air compressor, it is characterized in that: described radial magnetic bearing (62) comprises magnetic suspension bearing stator (621) and magnetic suspension bearing rotor (622), described magnetic suspension bearing stator (621) is fixed in the described bearing support (61), and described magnetic suspension bearing rotor (622) places in the magnetic suspension bearing stator (621) and is fixed on the described electric machine main shaft (1).
8. permanent-magnet synchronous magnetic suspension high speed motor according to claim 6 directly drives air compressor, it is characterized in that: described thrust magnetic suspension bearing (63) comprises thrust button (631), thrust magnetic suspension coil (632) and thrust impeller (633), described thrust impeller (633) is fixed in the described end-cap assembly (65), described thrust magnetic suspension coil (632) is set around on the described thrust impeller (633), and described thrust button (631) is located at described thrust magnetic suspension coil (632) one sides and is fixed on the described electric machine main shaft (1).
9. permanent-magnet synchronous magnetic suspension high speed motor according to claim 6 directly drives air compressor, it is characterized in that: described sensory package (64) comprises sensor (641), sensor holder (642) and a pair of air ring (643), described sensor holder (642) is fixed on the described bearing support (61), described a pair of air ring (643) is fixed in sensor holder (642) both sides, and described sensor (641) is located between a pair of air ring (643).
10. permanent-magnet synchronous magnetic suspension high speed motor according to claim 6 directly drives air compressor, it is characterized in that: described end-cap assembly (65) comprises lid (651) and auxiliary bearing (652), described lid (651) covers at thrust magnetic suspension bearing (63) and is fixedly connected with outward and with described bearing support (61) with sensory package (64), and described auxiliary bearing (652) is supported between described lid (651) and the electric machine main shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220481778 CN202789593U (en) | 2012-09-20 | 2012-09-20 | Permanent magnetic synchronous magnetic levitation high-speed motor direct-driven air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220481778 CN202789593U (en) | 2012-09-20 | 2012-09-20 | Permanent magnetic synchronous magnetic levitation high-speed motor direct-driven air compressor |
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| CN202789593U true CN202789593U (en) | 2013-03-13 |
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| CN 201220481778 Expired - Fee Related CN202789593U (en) | 2012-09-20 | 2012-09-20 | Permanent magnetic synchronous magnetic levitation high-speed motor direct-driven air compressor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828973A (en) * | 2012-09-20 | 2012-12-19 | 湖南大学 | Air compressor directly driven by permanent magnet synchronous magnetic suspension high-speed motor |
| CN104795909A (en) * | 2015-03-26 | 2015-07-22 | 同济大学 | High-speed electric machine electromagnetism structure for air compressor |
| CN106996382A (en) * | 2017-05-03 | 2017-08-01 | 黑龙江沧龙发电设备股份有限公司 | A kind of high-speed magnetic-suspension centrifugal Aeration fan and preparation method thereof |
| CN111064296A (en) * | 2018-10-16 | 2020-04-24 | 丰田自动车株式会社 | Electric motor |
| CN111749896A (en) * | 2020-07-07 | 2020-10-09 | 杭州派祺空气净化科技有限公司 | Energy-saving air compressor capable of eliminating friction force by utilizing magnetic suspension |
| WO2021189834A1 (en) * | 2020-03-24 | 2021-09-30 | 珠海格力电器股份有限公司 | Detection method and apparatus for magnetic levitation system, storage medium, and processor |
-
2012
- 2012-09-20 CN CN 201220481778 patent/CN202789593U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828973A (en) * | 2012-09-20 | 2012-12-19 | 湖南大学 | Air compressor directly driven by permanent magnet synchronous magnetic suspension high-speed motor |
| CN104795909A (en) * | 2015-03-26 | 2015-07-22 | 同济大学 | High-speed electric machine electromagnetism structure for air compressor |
| CN104795909B (en) * | 2015-03-26 | 2017-08-25 | 同济大学 | A kind of high-speed electric expreess locomotive electromagnetic structure used for air compressor |
| CN106996382A (en) * | 2017-05-03 | 2017-08-01 | 黑龙江沧龙发电设备股份有限公司 | A kind of high-speed magnetic-suspension centrifugal Aeration fan and preparation method thereof |
| CN111064296A (en) * | 2018-10-16 | 2020-04-24 | 丰田自动车株式会社 | Electric motor |
| CN111064296B (en) * | 2018-10-16 | 2022-11-11 | 丰田自动车株式会社 | Electric motor |
| WO2021189834A1 (en) * | 2020-03-24 | 2021-09-30 | 珠海格力电器股份有限公司 | Detection method and apparatus for magnetic levitation system, storage medium, and processor |
| CN111749896A (en) * | 2020-07-07 | 2020-10-09 | 杭州派祺空气净化科技有限公司 | Energy-saving air compressor capable of eliminating friction force by utilizing magnetic suspension |
| CN111749896B (en) * | 2020-07-07 | 2022-11-08 | 山东顺和新材料科技有限公司 | Energy-saving air compressor capable of eliminating friction force by utilizing magnetic suspension |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20180920 |