CN103051088B - Axial-segmented solid permanent-magnet rotor - Google Patents
Axial-segmented solid permanent-magnet rotor Download PDFInfo
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- CN103051088B CN103051088B CN201310026953.0A CN201310026953A CN103051088B CN 103051088 B CN103051088 B CN 103051088B CN 201310026953 A CN201310026953 A CN 201310026953A CN 103051088 B CN103051088 B CN 103051088B
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Abstract
The invention relates to an axial-segmented solid permanent-magnet rotor, belonging to the technical field of motors. The axial-segmented solid permanent-magnet rotor is used for solving the problem that permanent magnets are subjected to irreversible demagnetization due to too-high temperature due to the fact that the existing solid rotor of a permanent-magnet motor can not be subjected to good ventilation. The axial-segmented solid permanent-magnet rotor comprises a rotary shaft, a magnetism isolating ring, a plurality of permanent magnets, a plurality of permanent magnet slot wedges, a plurality of starting cage strips, two cage strip end rings, two axial rotor segments and an air guide portion, wherein the permanent magnets, the permanent magnet slot wedges and the starting cage strips are the same in number, the two axial rotor segments are same in structure, the magnetism isolating ring is sleeved on the external circular surface of the rotary shaft, the two axial rotor segments are sleeved on the external circular surface of the magnetism isolating ring along the axial direction and connected together through the air guide portion, each axial rotor segment is equally divided into a plurality of circumferential rotor segments along the circumferential direction, and a permanent magnet slot is formed between every two adjacent circumferential rotor segments along the circumferential direction. The axial-segmented solid permanent-magnet rotor is suitable for motor solid rotors.
Description
Technical field
The present invention relates to the solid p-m rotor of axial segmentation formula, belong to technical field of motors.
Background technology
Solid-rotor permanent-magnet synchronous motor starting performance is good, is suitable for heavy-load start, has higher efficiency and power factor, is widely used in electric power, chemical industry, petrochemical industry, iron and steel, water conservancy, building materials etc. and requires high performance occasion.If solid rotor does not adopt certain aeration structure, the heat that its surface eddy loss produces will cause whole rotor temperature rise too high, the performance of permanent magnet can raise along with temperature and decline, and then motor performance is reduced, if temperature exceedes the highest permission working temperature of permanent magnet, to likely cause the irreversible demagnetization of permanent magnet, once occur, permanent magnet can not remagnetize.
Summary of the invention
The present invention is solid rotor in order to solve existing magneto due to can not good ventilation, and makes temperature too high, causes the problem of permanent magnet irreversible demagnetization, provides the solid p-m rotor of a kind of axial segmentation formula.
The solid p-m rotor of axial segmentation formula of the present invention, it comprises rotating shaft, it also comprises magnetism-isolating loop, multiple permanent magnet, multiple permanent magnet slot wedge, multiple starting cage bar, two cage bar end ring, two rotor axial segmentations and air dams, described permanent magnet, permanent magnet slot wedge are identical with the quantity starting cage bar, the structure of two rotor axial segmentations is identical
Magnetism-isolating loop is socketed on the outer round surface of rotating shaft, and two rotor axial segmentations are socketed on the outer round surface of magnetism-isolating loop vertically, is linked together between two rotor axial segmentations by air dam,
Each rotor axial segmentation is along the circumferential direction divided into multiple periphery of rotor segmentation, along the circumferential direction forms permanent magnet trough between adjacent two periphery of rotor segmentations,
Be embedded in a permanent magnet along axial two the corresponding permanent magnet trough of two rotor axial segmentations, each permanent magnet passes through permanent magnet trough forelock at the notch place of permanent magnet trough;
Each periphery of rotor segmentation outer round surface has a rotor vertically, this rotor is positioned at the center of periphery of rotor sectional circular circumference, corresponding vertically two rotor of two rotor axial segmentations are embedded in one and start cage bar, the one end of starting cage bar is fixed on a cage bar end ring, this cage bar end ring is fixed on the outer face of a rotor axial segmentation, the other end starting cage bar is fixed on another cage bar end ring, and this another cage bar end ring is fixed on the outer face of another rotor axial segmentation;
Each periphery of rotor segmentation is along the circumferential direction uniformly distributed two axial ventilation holes;
Air dam along the circumferential direction by multiple permanent magnet every being divided into multiple wind-guiding segmentation, each wind-guiding segmentation is made up of upper connecting ring section, multiple wind deflector and air guide ring,
Upper connecting ring section is along the circumferential direction divided into two sections by starting cage bar, upper connecting ring section is positioned between two rotor axial segmentation outer shroud edges, by two rotor axial connection segments together, air guide ring is arranged between connecting ring section and magnetism-isolating loop, the two sides of air guide ring are fixed in two adjacent permanent magnets, air guide ring is arranged multiple draw-in groove, each draw-in groove is embedded with a wind deflector, the two sides of wind deflector are separately fixed in adjacent rotor axial segmentation;
The diameter of the bottom land of rotor is greater than or equal to the outer annular diameter of air guide ring.
Described upper connecting ring section is provided with two rectangular ventilation holes, and these two rectangular ventilation holes arrange vertically.
Between the contact-making surface of described permanent magnet and periphery of rotor segmentation, insulation board is set.
The wind deflector of described each wind-guiding segmentation is three.
Upper connecting ring section and rotor axial segmentation adopt identical material to make.
Advantage of the present invention: present invention employs rotor axial segmental structure, add the area of dissipation of rotor, the cold from fan of rotor is realized by the structure of rotor axial ventilation hole and air dam, thus effectively can reduce the temperature rise of solid rotor, the mean temperature of motor is reduced, the useful life of permanent magnet can be improved.
In rotor structure of the present invention, the heat that the design of air dam can make motor solid rotor surface be produced by eddy current loss leaves in time, and rotor can not be made to produce too high temperature; Due to rotor segment, region radiates heat area hotter in the middle of solid rotor is increased; It is simple that the present invention has structure, and practicality is high, is widely used, and is applicable in solid rotor synchronous machine or Solid Rotor Asynchronous Motors.
Accompanying drawing explanation
Fig. 1 is the perspective view of the solid p-m rotor of axial segmentation formula of the present invention;
Fig. 2 is the structural representation of air dam of the present invention.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1 and Fig. 2, the solid p-m rotor of axial segmentation formula described in present embodiment, it comprises rotating shaft 1, it also comprises magnetism-isolating loop 2, multiple permanent magnet 3, multiple permanent magnet slot wedge 4,6, two the rotor axial segmentations 7 of multiple starting cage bar 5, two cage bar end ring and air dam 8, described permanent magnet 3, permanent magnet slot wedge 4 are identical with the quantity starting cage bar 5, the structure of two rotor axial segmentations 7 is identical
Magnetism-isolating loop 2 is socketed on the outer round surface of rotating shaft 1, and two rotor axial segmentations 7 are socketed on the outer round surface of magnetism-isolating loop 2 vertically, are linked together between two rotor axial segmentations 7 by air dam 8,
Each rotor axial segmentation 7 is along the circumferential direction divided into multiple periphery of rotor segmentation, along the circumferential direction forms permanent magnet trough between adjacent two periphery of rotor segmentations,
Be embedded in a permanent magnet 3 along axial two the corresponding permanent magnet trough of two rotor axial segmentations 7, each permanent magnet 3 is fixed by permanent magnet slot wedge 4 at the notch place of permanent magnet trough;
Each periphery of rotor segmentation outer round surface has a rotor vertically, this rotor is positioned at the center of periphery of rotor sectional circular circumference, corresponding vertically two rotor of two rotor axial segmentations 7 are embedded in one and start cage bar 5, the one end of starting cage bar 5 is fixed on a cage bar end ring 6, this cage bar end ring 6 is fixed on the outer face of a rotor axial segmentation 7, the other end starting cage bar 5 is fixed on another cage bar end ring 6, and this another cage bar end ring 6 is fixed on the outer face of another rotor axial segmentation 7;
Each periphery of rotor segmentation is along the circumferential direction uniformly distributed two axial ventilation hole 7-1;
Air dam 8 along the circumferential direction by multiple permanent magnet 3 every being divided into multiple wind-guiding segmentation, each wind-guiding segmentation is made up of upper connecting ring section 8-1, multiple wind deflector 8-2 and air guide ring 8-3,
Upper connecting ring section 8-1 is along the circumferential direction divided into two sections by starting cage bar 5, upper connecting ring section 8-1 is between two rotor axial segmentation 7 outer shroud edges, two rotor axial segmentations 7 are linked together, air guide ring 8-3 is arranged between connecting ring section 8-1 and magnetism-isolating loop 2, the two sides of air guide ring 8-3 are fixed in two adjacent permanent magnets 3, air guide ring 8-3 arranges multiple draw-in groove, each draw-in groove is embedded with a wind deflector 8-2, the two sides of wind deflector 8-2 are separately fixed in adjacent rotor axial segmentation 7;
The diameter of the bottom land of rotor is greater than or equal to the outer annular diameter of air guide ring 8-3.
In present embodiment, upper connecting ring section 8-1 carries out being connected and fixed of rotor axial segmentation 7 by the mode of grafting of slotting in rotor axial segmentation 7.Be connected and fixed by screw between rotor axial segmentation 7 and magnetism-isolating loop 2.
The effect of air dam 8 has two aspects: one is be fixedly attached to together by upper connecting ring section 8-1 by two rotor axial segmentations 7; Two is to play draught effect: the ventilating path of motor enters into air dam 8 from rotor axial ventilation hole 7-1, then stator side is flow to, again to both sides flowing, after carrying out heat exchange with the end cap of motor and part casing, flow into rotor axial ventilation hole 7-1 again, form closed wind path.Wind deflector 8-2 also plays the effect of connection two rotor axial segmentations 7 while wind-guiding.
As shown in Figure 2, along wind deflector 8-2 direction, the radial certain angle of air guide ring 8-3 is departed from channel opening direction to draw-in groove opening direction on described air guide ring 8-3.
Operation principle: during solid rotor permanent magnetic motor work, air enters from the axial ventilation hole 7-1 entrance of rotor two end faces, arrive air dam 8, the structure of wind deflector 8-2 and air guide ring 8-3 makes air up under motor turning effort, one transportation work style enters stator Radial ventilation duct, flowed to stator end by stator yoke back axial ventilation ditch again, descendingly after carrying out heat exchange with end cap and casing get back to axial ventilation hole 7-1, form closed wind path; Another transportation work style enters motor gas-gap, flows, return axial ventilation hole 7-1 by the middle of air gap to both sides, forms closed wind path.
Embodiment two: present embodiment is described below in conjunction with Fig. 1 and Fig. 2, present embodiment is further illustrating execution mode one, and described upper connecting ring section 8-1 is provided with two rectangular ventilation holes 8-4, and these two rectangular ventilation holes 8-4 arrange vertically.
Embodiment three: present embodiment is further illustrating execution mode one or two, arranges insulation board 9 between described permanent magnet 3 and the contact-making surface of periphery of rotor segmentation.
The vibration of permanent magnet 3 when the setting of described insulation board can prevent motor from running.
Embodiment four: present embodiment is further illustrating execution mode one, two or three, the wind deflector 8-2 of described each wind-guiding segmentation is three.
Embodiment five: present embodiment is further illustrating execution mode one, two, three or four, and upper connecting ring section 8-1 and rotor axial segmentation 7 adopt identical material to make.
In present embodiment, upper connecting ring section 8-1 and rotor axial segmentation 7 adopt same material to make, and welded together, can play vortex flow effect, be unlikely to cause because of rotor segment the starting performance of motor to decline.
Claims (4)
1. the solid p-m rotor of axial segmentation formula, it comprises rotating shaft (1), it also comprises magnetism-isolating loop (2), multiple permanent magnet (3), multiple permanent magnet slot wedge (4), multiple starting cage bar (5), two cage bar end ring (6), two rotor axial segmentations (7) and air dams (8), described permanent magnet (3), permanent magnet slot wedge (4) are identical with the quantity starting cage bar (5), the structure of two rotor axial segmentations (7) is identical
Magnetism-isolating loop (2) is socketed on the outer round surface of rotating shaft (1), two rotor axial segmentations (7) are socketed on the outer round surface of magnetism-isolating loop (2) vertically, linked together by air dam (8) between two rotor axial segmentations (7)
Each rotor axial segmentation (7) is along the circumferential direction divided into multiple periphery of rotor segmentation, along the circumferential direction forms permanent magnet trough between adjacent two periphery of rotor segmentations,
Be embedded in a permanent magnet (3) along axial two the corresponding permanent magnet trough of two rotor axial segmentations (7), each permanent magnet (3) is fixed by permanent magnet slot wedge (4) at the notch place of permanent magnet trough;
Each periphery of rotor segmentation outer round surface has a rotor vertically, this rotor is positioned at the center of periphery of rotor sectional circular circumference, two rotor that two rotor axial segmentations (7) are corresponding are vertically embedded in one and start cage bar (5), the one end of starting cage bar (5) is fixed on a cage bar end ring (6), this cage bar end ring (6) is fixed on the outer face of a rotor axial segmentation (7), the other end starting cage bar (5) is fixed on another cage bar end ring (6), this another cage bar end ring (6) is fixed on the outer face of another rotor axial segmentation (7),
Each periphery of rotor segmentation is along the circumferential direction uniformly distributed two axial ventilation holes (7-1);
Air dam (8) along the circumferential direction by multiple permanent magnet (3) every being divided into multiple wind-guiding segmentation, each wind-guiding segmentation is made up of upper connecting ring section (8-1), multiple wind deflector (8-2) and air guide ring (8-3)
Upper connecting ring section (8-1) is along the circumferential direction divided into two sections by starting cage bar (5), upper connecting ring section (8-1) is positioned between two rotor axial segmentation (7) outer shroud edges, two rotor axial segmentations (7) are linked together, air guide ring (8-3) is arranged between connecting ring section (8-1) and magnetism-isolating loop (2), the two sides of air guide ring (8-3) are fixed in two adjacent permanent magnets (3), air guide ring (8-3) arranges multiple draw-in groove, each draw-in groove is embedded with a wind deflector (8-2), the two sides of wind deflector (8-2) are separately fixed in adjacent rotor axial segmentation (7),
The diameter of the bottom land of rotor is greater than or equal to the outer annular diameter of air guide ring (8-3);
It is characterized in that, described upper connecting ring section (8-1) is provided with two rectangular ventilation holes (8-4), and these two rectangular ventilation holes (8-4) arrange vertically.
2. the solid p-m rotor of axial segmentation formula according to claim 1, is characterized in that, arranges insulation board (9) between described permanent magnet (3) and the contact-making surface of periphery of rotor segmentation.
3. the solid p-m rotor of axial segmentation formula according to claim 1, is characterized in that, the wind deflector (8-2) of described each wind-guiding segmentation is three.
4. the solid p-m rotor of axial segmentation formula according to claim 1, is characterized in that, upper connecting ring section (8-1) adopts identical material to make with rotor axial segmentation (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310026953.0A CN103051088B (en) | 2013-01-24 | 2013-01-24 | Axial-segmented solid permanent-magnet rotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310026953.0A CN103051088B (en) | 2013-01-24 | 2013-01-24 | Axial-segmented solid permanent-magnet rotor |
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| Publication Number | Publication Date |
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| CN103051088A CN103051088A (en) | 2013-04-17 |
| CN103051088B true CN103051088B (en) | 2015-02-18 |
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| CN201310026953.0A Active CN103051088B (en) | 2013-01-24 | 2013-01-24 | Axial-segmented solid permanent-magnet rotor |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578660B (en) * | 2014-12-24 | 2017-02-08 | 郑州轻工业学院 | Device and method for increasing utilization rate of starting cage bar of permanent magnet motor |
| WO2016125567A1 (en) * | 2015-02-02 | 2016-08-11 | 三菱電機株式会社 | Synchronous machine control device and permanent magnet temperature estimation method for synchronous machine |
| CN105915004A (en) * | 2016-06-06 | 2016-08-31 | 尚勤贵 | Rotor of motor |
| CN107425629B (en) * | 2017-05-27 | 2020-01-10 | 南京航空航天大学 | Permanent magnet motor rotor |
| CN107171469B (en) * | 2017-06-27 | 2019-11-08 | 北京交通大学 | With heat bridge and the permanent magnet machine rotor sheath and magneto that stir aerofoil structure |
| CN108566007B (en) * | 2018-05-04 | 2020-03-06 | 中车株洲电机有限公司 | Sectional type squirrel cage rotor rigidity reinforcing assembly |
| CN109149815B (en) * | 2018-09-14 | 2020-10-23 | 北京交通大学 | Solid and lamination hybrid permanent magnet rotor structure |
| CN109104015A (en) * | 2018-09-27 | 2018-12-28 | 湖南湘电动力有限公司 | A kind of air-cooling magnetic ring modular rotor and motor |
| CN110401316B (en) * | 2019-08-20 | 2020-08-14 | 瑞昌市森奥达科技有限公司 | Assembling equipment and assembling method for permanent magnet rotor |
| CN116526795B (en) * | 2023-06-29 | 2023-12-12 | 深圳小象鸿业机电有限公司 | Efficient radiating axial flux motor |
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| DE3514207A1 (en) * | 1985-04-19 | 1986-10-30 | Promotec GmbH Ingenieurbüro, Industrievertretungen, 7000 Stuttgart | Dynamo having a rotor wheel for sucking in cooling air for motor vehicles |
| CN1941567A (en) * | 2005-09-27 | 2007-04-04 | 乐金电子(天津)电器有限公司 | Mixed-inductive electric motor |
| CN102013745A (en) * | 2006-11-24 | 2011-04-13 | 株式会社日立制作所 | Wind power generating system |
| CN102723834A (en) * | 2012-04-25 | 2012-10-10 | 山西北方机械制造有限责任公司 | Permanent magnet synchronous motor |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3514207A1 (en) * | 1985-04-19 | 1986-10-30 | Promotec GmbH Ingenieurbüro, Industrievertretungen, 7000 Stuttgart | Dynamo having a rotor wheel for sucking in cooling air for motor vehicles |
| CN1941567A (en) * | 2005-09-27 | 2007-04-04 | 乐金电子(天津)电器有限公司 | Mixed-inductive electric motor |
| CN102013745A (en) * | 2006-11-24 | 2011-04-13 | 株式会社日立制作所 | Wind power generating system |
| CN102723834A (en) * | 2012-04-25 | 2012-10-10 | 山西北方机械制造有限责任公司 | Permanent magnet synchronous motor |
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| CN103051088A (en) | 2013-04-17 |
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Inventor after: Li Weili Inventor after: Shen Jiafeng Inventor after: Huang Dongzhu Inventor after: Zhao Bingrong Inventor after: Xue Yi Inventor after: Zhang Xiaochen Inventor after: Cao Junci Inventor after: Li Dong Inventor after: Wang Likun Inventor after: Han Jichao Inventor after: Chen Chen Inventor after: Li Jinyang Inventor before: Li Weili Inventor before: Zhang Xiaochen Inventor before: Cao Junci Inventor before: Chen Chen Inventor before: Li Jinyang Inventor before: Shen Jiafeng Inventor before: Huang Dongzhu |
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Free format text: CORRECT: INVENTOR; FROM: LI WEILI ZHANG XIAOCHEN CAO JUNCI CHEN CHEN LI JINYANG SHEN JIAFENG HUANG DONGZHU TO: LI WEILI XUE YI ZHANG XIAOCHEN CAO JUNCI LI DONG WANG LIKUN HAN JICHAO CHEN CHEN LI JINYANG SHEN JIAFENG HUANG DONGZHU ZHAO BINGRONG |
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Application publication date: 20130417 Assignee: Jiangsu Weiteli Motor Manufacturing Co., Ltd. Assignor: Harbin University of Science and Technology Contract record no.: 2015230000033 Denomination of invention: Axial-segmented solid permanent-magnet rotor Granted publication date: 20150218 License type: Exclusive License Record date: 20150415 |
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Inventor after: Li Weili Inventor after: Shen Jiafeng Inventor after: Huang Dongzhu Inventor after: Zhao Bingrong Inventor after: Yao Xiurong Inventor after: Liu Zhaojing Inventor after: Xue Yi Inventor after: Zhang Xiaochen Inventor after: Cao Junci Inventor after: Li Dong Inventor after: Wang Likun Inventor after: Han Jichao Inventor after: Chen Chen Inventor after: Li Jinyang Inventor before: Li Weili Inventor before: Shen Jiafeng Inventor before: Huang Dongzhu Inventor before: Zhao Bingrong Inventor before: Xue Yi Inventor before: Zhang Xiaochen Inventor before: Cao Junci Inventor before: Li Dong Inventor before: Wang Likun Inventor before: Han Jichao Inventor before: Chen Chen Inventor before: Li Jinyang |
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