CN104518584A - Rare earth permanent magnetic motor employing glass fiber reinforced plastic for magnetic isolation - Google Patents
Rare earth permanent magnetic motor employing glass fiber reinforced plastic for magnetic isolation Download PDFInfo
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- CN104518584A CN104518584A CN201310451073.8A CN201310451073A CN104518584A CN 104518584 A CN104518584 A CN 104518584A CN 201310451073 A CN201310451073 A CN 201310451073A CN 104518584 A CN104518584 A CN 104518584A
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- rotor core
- iron core
- rotor iron
- magnetic
- internal rotor
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- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a rotor core, and provides a rare earth permanent magnetic motor employing glass fiber reinforced plastics for magnetic isolation. The rotor core comprises an internal rotor core and an external rotor core sleeving the internal rotor core, the outer rim of the internal rotor core is provided with multiple first grooves, the inner rim of the external rotor core is provided with multiple second grooves in one-to-one correspondence with the multiple first grooves, wedges are arranged in the first grooves and the second grooves which are corresponding, and gaps between the internal rotor core and the external rotor core are connected by use of a magnetic isolation layer formed by glass fiber reinforced plastics (the glass fiber reinforced plastic). According to the invention, the rotor core is arranged to be composed of the internal rotor core and the external rotor core, and the internal rotor core and the external rotor core are cast and connected through the glass fiber reinforced plastic with a magnetic isolation effect, such that magnetic leakage of the rare earth permanent magnetic motor, arranged to be tangential to magnetic steel is effectively reduced, less magnetic steel is used for the rare earth permanent magnetic motor, and the manufacture cost is decreased. The rotor stator provided by the invention can better bear a tangential force and a radial force which are generated during the operation process of the rare earth permanent magnetic motor, and improves the rigidity and the integrity of the rotor core.
Description
Technical field
The present invention relates to a kind of rare-earth permanent magnet motor rotor core structure, belong to technical field of motors.
Background technology
Modem rare-earth magneto all adopts higher magnetic loading, for not making the magnetic leakage factor of permanent magnet in motor excessive and causing permanent magnetic material utilance too low, generally can take various every magnetic measure.
Typical in magnetic measure at present, be every magnetic magnetic bridge, magnetic flux has been reached capacity by setting to limit the effect of leakage field.Less every magnetic magnetic bridge width, this position magnetic resistance is just larger, more can limit leakage flux.But magnetic bridge width crosses the punching machinery weaken that young pathbreaker makes to make rotor, and shortens the useful life of punch die.
Also be a critical size every magnetic magnetic bridge length, result of calculation shows, if certain size can not be ensured every magnetic magnetic bridge length, even if magnetic bridge width is little, and also obviously declining every magnetic effect of magnetic bridge.But when after the size that magnetic bridge length reaches certain, then increase length, no longer include obvious change, and excessive magnetic bridge length will make rotor mechanical intensity decline every magnetic effect, manufacturing cost improves.
Generally the adopting non magnetic rotating shaft every magnetic measure or add every magnetic copper sheathing or aluminium cover in magnetic rotating shaft of the rare-earth permanent-magnet electric machine of tangential excitation, this makes the manufacturing cost of rare-earth permanent-magnet electric machine increase, and manufacturing process becomes complicated.In recent years, some enterprise have employed air and adds new technology every magnetic magnetic bridge every magnetic, achieves certain effect.But when the capacity of rare-earth permanent-magnet electric machine is larger, this structure makes the mechanical strength of rotor core seem not enough, the reliability decrease of rare-earth permanent-magnet electric machine.
Summary of the invention
In view of the above-mentioned defect existed in prior art, the invention provides and a kind ofly can improve the rotor core structure of magneto every magnetic property and integral rigidity.
The present invention adopts following technical scheme: a kind of rotor core, be made up of internal rotor iron core and the outer rotor iron core be set in outside internal rotor iron core, the outer rim of internal rotor iron core is provided with multiple first groove, the inner edge of outer rotor iron core is provided with and multiple first groove multiple second groove one to one, be provided with voussoir between the first corresponding groove and the second groove, what the gap between internal rotor iron core and outer rotor iron core adopted fiberglass reinforced plastics (fiberglass) to be formed connects every magnetosphere.
Second groove is actually dove-tail, the force structure " inlayed " with the formation of falling dovetail of the voussoir being embedded in internal rotor iron core outer rim.
Voussoir material can be aluminium alloy, copper alloy, stainless steel etc.
Compared with prior art, the feature of rotor core of the present invention and rare-earth permanent-magnet electric machine is:
1, rotor core is made internal rotor iron core and outer rotor iron core two parts by the present invention, inner and outer Rotator iron core pours connection by the fiberglass had every magnetic effect, effectively reduce the rare-earth permanent-magnet electric machine leakage field that tangential magnet-steel is arranged, reduce rare-earth permanent-magnet electric machine magnet steel consumption, thus reduce manufacturing cost.
2, rotor core of the present invention can better bear the tangential force and radial load that produce in rare-earth permanent-magnet electric machine running, improves rigidity and the globality of rotor core.
Accompanying drawing explanation
Fig. 1 is rotor core schematic diagram of the present invention;
Fig. 2 is the internal rotor iron core schematic diagram forming rotor core of the present invention;
Fig. 3 is the outer rotor iron core schematic diagram forming rotor core of the present invention;
Fig. 4 is the voussoir schematic diagram of rotor core of the present invention.
Description of reference numerals
1-outer rotor iron core 2-internal rotor iron core
3-first groove 4-second groove
5-voussoir 6-fiberglass
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not as a limitation of the invention.
As shown in Figure 1, a kind of rotor core of the embodiment of the present invention, comprises internal rotor iron core 2 and is set in the outer rotor iron core 1 outside internal rotor iron core 2, is arranged on voussoir 5 between internal rotor iron core 2 and outer rotor iron core 1 in addition and every magnetosphere fiberglass 6.
Shown in composition graphs 1,2,3, the outer rim of internal rotor iron core 2 is provided with multiple first groove 3, after internal rotor iron core 2 laminates, is embedded in by voussoir 5 in first groove 3, voussoir 5 one end is exposed simultaneously.The inner edge of outer rotor iron core 1 is provided with multiple second groove 4, quantity, the relative position of the first groove 3 and the second groove 4 are consistent, outer rotor iron core 1 is set in outside internal rotor iron core 2, first groove 3 is alignd one by one with the second groove 4, one end that simultaneously voussoir 5 exposes is set in the second groove 4, but not with the second groove 4 peripheral contact.The concentricity of adjustment internal rotor iron core 2 and outer rotor iron core 1, fixing, now between internal rotor iron core 2 and outer rotor iron core 1, have a space between voussoir 5 and outer rotor iron core 1, in this space, filling glass steel 6, is formed every magnetosphere.
Second groove is actually dove-tail, and one end that voussoir 5 exposes is the voussoir of falling dovetail, and these two parts inlay the force structure that formation " is inlayed " mutually.
In the present embodiment, voussoir 5 material is aluminium alloy.
The rotor core of the present embodiment and motor, rotor core is made internal rotor iron core and outer rotor iron core two parts, inner and outer Rotator iron core pours connection by the fiberglass had every magnetic effect, effectively reduce the rare-earth permanent-magnet electric machine leakage field that tangential magnet-steel is arranged, reduce rare-earth permanent-magnet electric machine magnet steel consumption, thus reduce manufacturing cost.The rotor core of the present embodiment can better bear the tangential force and radial load that produce in rare-earth permanent-magnet electric machine running, improves rigidity and the globality of rotor core.
Above embodiment is only exemplary embodiment of the present invention, and be not used in restriction the present invention, protection scope of the present invention is defined by the claims.
Claims (3)
1. permanent magnetic electric machine rotor iron core, it is characterized in that, comprise internal rotor iron core and be set in the outer rotor iron core outside described internal rotor iron core, the outer rim of described internal rotor iron core is provided with multiple first groove, the inner edge of described outer rotor iron core is arranged and multiple described first groove multiple second groove one to one, voussoir is provided with between corresponding described first groove and the second groove, gap between internal rotor iron core and outer rotor iron core, fiberglass reinforced plastics (fiberglass) is all adopted to solidify together with the gap around voussoir, form fiberglass every magnetosphere.
2. rotor core according to claim 1, is characterized in that, described in be embedded in voussoir in internal rotor iron core and adopt non-magnet material to make.Material can be aluminium alloy, copper alloy, stainless steel etc.
3. rotor core according to claim 1, is characterized in that, described second groove that outer rotor iron core inner edge is arranged is actually dove-tail, the force structure " inlayed " with the formation of falling dovetail of the voussoir being embedded in internal rotor iron core outer rim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310451073.8A CN104518584B (en) | 2013-09-27 | 2013-09-27 | Permanent magnetic electric machine rotor iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310451073.8A CN104518584B (en) | 2013-09-27 | 2013-09-27 | Permanent magnetic electric machine rotor iron core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104518584A true CN104518584A (en) | 2015-04-15 |
| CN104518584B CN104518584B (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310451073.8A Active CN104518584B (en) | 2013-09-27 | 2013-09-27 | Permanent magnetic electric machine rotor iron core |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067031A (en) * | 2018-08-15 | 2018-12-21 | 珠海格力电器股份有限公司 | A kind of vibration damping rotor core, vibration damping rotor and motor |
| CN109302007A (en) * | 2018-10-12 | 2019-02-01 | 赣州诚正稀土新材料股份有限公司 | A kind of rare-earth permanent magnet motor rotor iron core assembly equipment |
| DE102017222099A1 (en) * | 2017-12-06 | 2019-06-06 | Baumüller Nürnberg GmbH | Rotor of an electric machine |
| CN112072816A (en) * | 2020-09-28 | 2020-12-11 | 珠海格力电器股份有限公司 | Rotor structure and motor with same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3364960B2 (en) * | 1992-09-04 | 2003-01-08 | 松下電器産業株式会社 | Permanent magnet motor rotor |
| CN2840480Y (en) * | 2005-10-11 | 2006-11-22 | 上海万德风力发电股份有限公司 | Neodymium-ferroboron permanent magnetic electric machine rotor used on wind power generator |
| CN202918083U (en) * | 2012-10-29 | 2013-05-01 | 江苏富天江电子电器有限公司 | New type motor rotor injection molding structure |
| CN203632381U (en) * | 2013-09-27 | 2014-06-04 | 安徽明腾永磁机电设备有限公司 | Permanent magnet motor rotor iron core |
-
2013
- 2013-09-27 CN CN201310451073.8A patent/CN104518584B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017222099A1 (en) * | 2017-12-06 | 2019-06-06 | Baumüller Nürnberg GmbH | Rotor of an electric machine |
| CN109067031A (en) * | 2018-08-15 | 2018-12-21 | 珠海格力电器股份有限公司 | A kind of vibration damping rotor core, vibration damping rotor and motor |
| CN109302007A (en) * | 2018-10-12 | 2019-02-01 | 赣州诚正稀土新材料股份有限公司 | A kind of rare-earth permanent magnet motor rotor iron core assembly equipment |
| CN109302007B (en) * | 2018-10-12 | 2023-09-19 | 赣州诚正稀土新材料股份有限公司 | Rare earth permanent magnet motor rotor core assembly equipment |
| CN112072816A (en) * | 2020-09-28 | 2020-12-11 | 珠海格力电器股份有限公司 | Rotor structure and motor with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104518584B (en) | 2017-01-04 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Novel high-efficiency permanent magnet motor rotor core Effective date of registration: 20181204 Granted publication date: 20170104 Pledgee: Anhui Rural Commercial Bank branch Limited by Share Ltd Changfeng Shuangfeng Pledgor: Anhui Mingteng Permanent-magnetic Machinery & Electrical Equipment Co., Ltd. Registration number: 2018340000697 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |