CN203377700U - Novel permanent magnet motor rotor - Google Patents
Novel permanent magnet motor rotor Download PDFInfo
- Publication number
- CN203377700U CN203377700U CN201320406628.2U CN201320406628U CN203377700U CN 203377700 U CN203377700 U CN 203377700U CN 201320406628 U CN201320406628 U CN 201320406628U CN 203377700 U CN203377700 U CN 203377700U
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- China
- Prior art keywords
- permanent magnet
- permanent
- magnetic material
- steel
- rotating shaft
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- 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.)
- Expired - Fee Related
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 26
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 15
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 11
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 8
- 239000010935 stainless steel Substances 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 239000000696 magnetic material Substances 0.000 claims description 41
- 239000003292 glue Substances 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 12
- 150000002910 rare earth metals Chemical class 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model discloses a novel permanent magnet motor rotor which comprises a rotating shaft, permanent magnet materials, a press ring and a back-up ring used for a shaft. The permanent magnet materials belong to composite permanent magnet materials and are composed of ferrite magnetic steels and neodymium iron boron magnetic steels. The permanent magnet motor rotor further comprises silicon steel plates and a stainless steel sleeve. The permanent magnet materials are divided into two types: an embedded type, that is to say, the permanent magnet materials are inserted in the silicon steel plates which are sleeved on the rotating shaft; and a surface mounted type, that is to say, the permanent magnet materials are bonded on the external diameter of the rotating shaft and the stainless steel sleeve is sleeved on the permanent magnet materials. The structure of a magnetic system in the permanent magnet motor rotor is changed, and low-cost ferrites and rare earth permanent magnets are utilized and combined to form a composite magnetic system, such that the production cost of a permanent magnet motor is effectively reduced under a prerequisite that requirements of the rare earth permanent magnet motor for magnetic field intensity are satisfied.
Description
Technical field
The utility model relates to the structure of rotor, relates in particular to the structure of alternating-current permanent-magnet servo motor rotor.
Background technology
Motor is to take magnetic field to carry out the electric machinery that electric energy and mechanical energy are changed mutually as medium.Magnetic field can be produced by current excitation, also can be produced by permanent magnet.The motor that produces the magnetic field manufacturing with permanent magnet is magneto.But general permanent magnet, because magnetic energy density is low, thereby the necessary air-gap field intensity of the power conversion of setting up is also lower, thus can only manufacture the magneto that some capacity are little, as a large amount of ferrite permanent-magnet motors.Along with high-performance rare-earth permanent magnet material, the particularly appearance of Nd-Fe-B permanent magnetic, not only the magnetic field intensity that current excitation produces can be reached, but also considerably beyond current excitation, thereby the large and middle size motor from several kilowatts, tens kilowatts to hundreds of kilowatt can be produced.The most obvious characteristic of property of rare-earth permanent-magnet electric machine is lightness, high performance, energy-efficient.But, along with the continuous rising of the rare earth prices of raw and semifnished materials, the rare earth permanent-magnetic material price of producing is also soaring always, cause the production cost that exchanges the rare earth permanent magnet servomotor significantly to raise thereupon.
Summary of the invention
Problem to be solved in the utility model is the structure that changes magnetic system in permanent magnet machine rotor, form compound magnetic system with ferrite at a low price and rare-earth permanent magnet, effectively reduce the production cost of magneto meeting under the precondition that rare-earth permanent-magnet electric machine requires magnetic field intensity.
A kind of novel permanent magnet machine rotor of the utility model, it comprises rotating shaft, permanent magnetic material, pressure ring, shaft block ring, permanent magnetic material is composite permanent-magnetic material, ferrite magnetic steel and Nd-Fe-B magnet steel, consists of.
Wherein permanent magnetic material is divided into two kinds of forms: a kind of for embedded: permanent magnet machine rotor also comprises silicon steel sheet, and permanent magnetic material is inserted in silicon steel sheet, and silicon steel sheet is enclosed within rotating shaft; Another kind of is surface-mount type: permanent magnet machine rotor also comprises stainless steel sleeve, and permanent magnetic material is bonded on the external diameter of rotating shaft, and stainless steel sleeve is enclosed within outside permanent magnetic material.
The permanent magnetic material of the utility model permanent magnet machine rotor is composite permanent-magnetic material, by ferrite magnetic steel and Nd-Fe-B magnet steel, formed, after using the built-up magnet of two kinds of magnetic materials, the magnetic line of force issue of built-up magnet is not identical with the magnetic line of force issue of former single magnet, changed the magnetic Circuit Design of magnet, magnetic energy density is high, thereby air-gap field intensity is also higher, so can manufacture magneto capacious.Therefore use the magneto of this novel rotor to compare with the ferrite permanent-magnet motor, capacity is large.Simultaneously, because ferrite is low than the NdFeB material cost, under the prerequisite that does not affect motor performance, the part Nd-Fe-B magnet steel is substituted by ferrite, has reduced material cost; Take the 130-5NM servomotor as example, and the magnet of a slice Nd-Fe-B magnet steel is greatly about 50 unit left and right, and every motor is with 4; And the price of the ferrite magnetic steel of same specification reduces the consumption of neodymium iron boron greatly about 2 to 3 yuan of a slices during compound use, adopt the rotor of the compound magnetic of ferrite and neodymium iron boron system, the price of magnetic system reduces 24%, so reduced production cost.In addition, the price of the permanent magnetic material of this novel permanent magnet motor rotor, well below the price of rare earth permanent magnet, therefore, is compared with rare-earth permanent-magnet electric machine, in the situation that capacity is identical, this novel production cost obviously reduces.
The accompanying drawing explanation
Fig. 1 is the cutaway view of the utility model permanent magnet machine rotor;
Fig. 2 is the Embedded schematic diagram of permanent magnetic material;
The schematic diagram that Fig. 3 is permanent magnetic material surface-mount type the first structure;
The schematic diagram that Fig. 4 is permanent magnetic material surface-mount type the second structure.
Embodiment
From Fig. 1, Fig. 2, Fig. 3, Fig. 4, this novel a kind of novel permanent magnet machine rotor, it comprises rotating shaft 1, permanent magnetic material 3, pressure ring 2, shaft block ring 5, permanent magnetic material 3 is composite permanent-magnetic material, ferrite magnetic steel 3-1 and Nd-Fe-B magnet steel 3-2, consists of.
As originally novel a kind of optimal way, permanent magnet machine rotor also comprises silicon steel sheet 4, now permanent magnetic material 3 is embedded, be that permanent magnetic material 3 is inserted in silicon steel sheet 4, silicon steel sheet 4 is enclosed within rotating shaft 1, permanent magnetic material 3 is divided into inside and outside two-layer, and internal layer is ferrite magnetic steel 3-1, and skin is neodymium-iron-boron Steel material 3-2.
As originally novel another kind of optimal way, permanent magnet machine rotor also comprises stainless steel sleeve 6, and now permanent magnetic material 3 is surface-mount type, and permanent magnetic material 3 is bonded on the external diameter of rotating shaft 1, and stainless steel sleeve 6 is enclosed within outside permanent magnetic material 3.Now, permanent magnetic material has two kinds of arrangements: a kind of: permanent magnetic material is inside and outside two-layer, and internal layer is ferrite magnetic steel 3-1, and skin is Nd-Fe-B magnet steel 3-2, between ectonexine, with glue, fixes, and the bottom surface of ferrite magnetic steel 3-1 is bonded in rotating shaft 1; Another kind is: permanent magnetic material is that ferrite magnetic steel 3-1 and Nd-Fe-B magnet steel 3-2 interval are arranged, between both end faces, with glue, fix, both bottom surfaces are bonded in rotating shaft 1 with glue.
Motor is a kind of device that is mechanical energy by electric energy conversion, simultaneously with thermal losses, its operation principle is: after electrical power, stator produces a stable magnetic field, itself has permanent magnet rotor, thus a magnetic field is also arranged, when two magnetic fields during at steric interaction, will produce magnetic torque, directly drive rotor motion.Permanent magnetic material of the present utility model is composite permanent-magnetic material, makes built-up magnet mutually superpose and reach the needed magnetic field intensity of design of electrical motor in the magnetic field in space, has now just completed the transformation of motor rotor magnetic steel structure, has reduced the price of making motor.
This novel permanent magnet motor rotor is in the situation that guarantee that motor performance is constant, with existing two kinds of rotors, compare, advantage is as follows: (1) economy: because of ferrite low than the NdFeB material cost, under the prerequisite that does not affect motor performance, the part Nd-Fe-B magnet steel is substituted by ferrite, has reduced material cost; (2) increase the service life: ferrite is stronger than the non-oxidizability of neodymium iron boron, and lower to environmental requirement, with whole Nd-Fe-B magnet steels, compares, and Combined magnetic steel can increase the service life; (3) the magnetic field layout more is tending towards reasonable: the requirement according to motor to magnetic field, adopt ferrite magnetic steel under low magnetic field intensity, and adopt Nd-Fe-B magnet steel under high magnetic field intensity, take full advantage of the advantage appropriate design Combined magnetic steel of the two magnetic field complementation; (4) improve temperature tolerance: in the situation that temperature is higher, the neodymium-iron-boron performance will significantly reduce, and ferritic temperature tolerance is far better, adopt the part ferrite to substitute neodymium iron boron, improve the temperature tolerance of motor.This novel magnetic material and magnetic Circuit Design of passing through to change rotor, reach the required satisfied requirement of design of electrical motor, realizes technological innovation, the purpose of saving rare earth resources and reducing costs.
Claims (5)
1. a novel permanent magnet machine rotor, it comprises rotating shaft (1), permanent magnetic material (3), pressure ring (2), shaft block ring (5), it is characterized in that: permanent magnetic material (3) is composite permanent-magnetic material, ferrite magnetic steel (3-1) and Nd-Fe-B magnet steel (3-2), consists of.
2. permanent magnet machine rotor according to claim 1, it is characterized in that: permanent magnet machine rotor also comprises silicon steel sheet (4), now permanent magnetic material (3) is embedded, be that permanent magnetic material (3) is inserted in silicon steel sheet (4), silicon steel sheet (4) is enclosed within rotating shaft (1), permanent magnetic material (3) is divided into inside and outside two-layer, and internal layer is ferrite magnetic steel (3-1), and skin is neodymium-iron-boron Steel material (3-2).
3. permanent magnet machine rotor according to claim 1, it is characterized in that: permanent magnet machine rotor also comprises stainless steel sleeve (6), now permanent magnetic material (3) is surface-mount type, and permanent magnetic material (3) is bonded on the external diameter of rotating shaft (1), and stainless steel sleeve (6) is enclosed within outside permanent magnetic material (3).
4. permanent magnet machine rotor according to claim 3, it is characterized in that: permanent magnetic material is inside and outside two-layer, and internal layer is ferrite magnetic steel (3-1), and skin is Nd-Fe-B magnet steel (3-2), between ectonexine, with glue, fix, the bottom surface of ferrite magnetic steel (3-1) is bonded in rotating shaft (1).
5. permanent magnet machine rotor according to claim 3 is characterized in that: permanent magnetic material is that ferrite magnetic steel (3-1) and Nd-Fe-B magnet steel (3-2) interval are arranged, between both end faces, with glue, fix, both bottom surfaces are bonded in rotating shaft (1) with glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320406628.2U CN203377700U (en) | 2013-07-10 | 2013-07-10 | Novel permanent magnet motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320406628.2U CN203377700U (en) | 2013-07-10 | 2013-07-10 | Novel permanent magnet motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203377700U true CN203377700U (en) | 2014-01-01 |
Family
ID=49840205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320406628.2U Expired - Fee Related CN203377700U (en) | 2013-07-10 | 2013-07-10 | Novel permanent magnet motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203377700U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401329A (en) * | 2013-07-10 | 2013-11-20 | 中钢集团安徽天源科技股份有限公司 | Novel permanent-magnet motor rotor |
| CN104901441A (en) * | 2015-06-02 | 2015-09-09 | 安徽孟凌精密电子有限公司 | Rare earth permanent magnetic DC micro-motor used for new energy automobile |
| CN110875652A (en) * | 2018-08-30 | 2020-03-10 | 广东美芝制冷设备有限公司 | Motor rotor, motor and compressor |
-
2013
- 2013-07-10 CN CN201320406628.2U patent/CN203377700U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401329A (en) * | 2013-07-10 | 2013-11-20 | 中钢集团安徽天源科技股份有限公司 | Novel permanent-magnet motor rotor |
| CN104901441A (en) * | 2015-06-02 | 2015-09-09 | 安徽孟凌精密电子有限公司 | Rare earth permanent magnetic DC micro-motor used for new energy automobile |
| CN104901441B (en) * | 2015-06-02 | 2018-06-15 | 安徽孟凌精密电子有限公司 | New-energy automobile rareearth permanent-magnet DC micro machine |
| CN110875652A (en) * | 2018-08-30 | 2020-03-10 | 广东美芝制冷设备有限公司 | Motor rotor, motor and compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 243000 Anhui province Ma'anshan mountain rain Huo sparkle south of the road No. 9 Patentee after: Sinosteel Tianyuan Co.,Ltd. Address before: 243000 No. 51 Hongqi South Road, Ma'anshan economic and Technological Development Zone, Anhui Patentee before: SINOSTEEL ANHUI TIANYUAN TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20200710 |