CN201690284U - Magnetic steel cooling trough structure - Google Patents
Magnetic steel cooling trough structure Download PDFInfo
- Publication number
- CN201690284U CN201690284U CN2010201640479U CN201020164047U CN201690284U CN 201690284 U CN201690284 U CN 201690284U CN 2010201640479 U CN2010201640479 U CN 2010201640479U CN 201020164047 U CN201020164047 U CN 201020164047U CN 201690284 U CN201690284 U CN 201690284U
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- permanent magnet
- magnetic steel
- earth permanent
- rare earth
- rotor
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model provides a magnetic steel cooling trough structure, which relates to a magnetic steel cooling trough structure of a rare earth permanent magnet synchronous motor, and is applicable to built-in rare earth permanent magnet motors such as an asynchronous three-phase rare earth permanent magnet motor, a variable-frequency speed regulating rare earth permanent magnet motor, a brushless direct current permanent magnet motor and the like. Ventilation cooling troughs are formed at the bottom of a magnetic steel trough of a rotor core punching sheet of a rare earth permanent magnet motor; end-plate ventilation holes are formed on end plates on two sides of the rotor core punching sheet; after the rotor core punching sheet is laminated, the end-plate ventilation holes are aligned with the ventilation cooling troughs at the bottom of the magnetic steel trough on the rotor core punching sheet; and the ventilation cooling troughs adopt rectangular ventilation cooling troughs. When the rare earth permanent magnet motor operates, motor cooling airflows can enter from end-plate ventilation holes on the end plate at one end, pass through the rectangular ventilation cooling troughs at the bottom of the magnetic steel trough, and then flow out from the end-plate ventilation holes on the end plate at the other end, so as to take out heat in the magnetic steel trough in a rotor, and keep the magnetic steel body of a rare earth permanent magnet operating at a lower temperature.
Description
Technical field
What a kind of magnetic steel cooling tank structure of the utility model related to is the magnetic steel cooling tank structure of rare-earth permanent-magnet synchronous motor, is applicable to that asynchronous three-phase rare-earth permanent-magnet motor, frequency control rare-earth permanent magnet motor, brushless direct-current permanent magnet motor etc. adopt built-in rare-earth permanent magnet motor.
Background technology
Adopt rare-earth permanent magnet motor, compare, have fairly obvious advantage with three phase induction motor:
1. the strictness of rotating speed and frequency keeps the relation of n=GO.F/P, as long as frequency is constant, rotating speed is also constant.
2. power factor height, by appropriate design, power factor can be near limiting value 1.0.
3. volume is little, and is in light weight, takes rational field structure, can improve air gap flux density, develops the high power density motor.
4, efficient height, the electronic efficient of rare earth permanent magnet have surpassed the 1E3 among the European motor efficiency standard eef1 peace EC60034-30, belong to the ultra high efficiency motor.
5, has wide economical operation scope, the economical operation scope of induction motor is generally 60%～100% of nominal load, and near the economical operation scope 20%～120% of rare-earth permanent magnet motor and induction motor wide knot good match 35% nominal load descends rapidly.Permanent magnet motor power factor when 25% nominal load still can reach more than 0.9, and induction motor about 0.85 during from nominal load quickly falls to below 0.5.
For this reason, the research and development rare-earth permanent-magnet electric machine has energy savings, alleviates the energy shortage situation, ensures economic security of the country, protects environment and occupies state's fortune market aspects, has great significance.
Yet rare-earth permanent magnet steel also has fairly obvious shortcoming.1, Nd-Fe-B rare earth permanent magnetic material demagnetizes easily.2, the easy oxidation of Nd-Fe-B rare earth permanent magnetic material also makes the magnet steel demagnetization easily after thulium permanent magnet is oxidized.
Therefore, some enterprises think that the rare-earth permanent-magnet electric machine temperature rise is low in the rare-earth permanent-magnet electric machine industry, so packing ring epoxy resins in the magnet steel groove, isolated magnet steel contacts with air, reduces the degree of magnet steel oxidation, but produces contact at rare-earth permanent magnet motor, reduce the degree of magnet steel oxidation, sharply raise but produce step-out situation lower magnetic steel temperature, and can not dispel the heat the time, rare-earth permanent magnet motor is out of service because of loss of excitation at rare-earth permanent magnet motor.
Summary of the invention
The utility model purpose is to provide a kind of magnetic steel cooling tank structure at above-mentioned weak point, magnet steel trench bottom at the rare-earth permanent magnet motor rotor-core lamination is provided with the ventilation cooling bath, rotor-core lamination both sides end plate is provided with the end plate ventilation hole, thereby strengthen the ventilation cooling of magnet steel trench bottom, the temperature that produces the generation of step-out situation lower magnetic steel at rare-earth permanent magnet motor obtains good heat radiating, guarantees that rare-earth permanent magnet motor can normally move.
The utility model thinks that the coating that magnet steel anti-oxidation should add the high magnetic steel surface handles, and magnet steel in being built into the magnet steel groove after, good ventilation cooling condition should be arranged, therefore, designed the cooling channel groove at the magnet steel bottom land.
A kind of magnetic steel cooling tank structure of the utility model is to take following technical scheme to realize: a kind of magnetic steel cooling tank structure is that the magnet steel trench bottom at the rare-earth permanent magnet motor rotor-core lamination is provided with the ventilation cooling bath, rotor-core lamination both sides end plate is provided with the end plate ventilation hole, rotor-core lamination is after laminating, and the end plate ventilation hole aligns with the ventilation cooling bath of rotor-core lamination upper magnetic steel bottom land.
When rare-earth permanent magnet motor moves, motor cooling air-flow can enter from the end plate ventilation hole, pass the magnet steel trench bottom and be provided with rectangle ventilation cooling bath, the end plate ventilation hole that is provided with from other end end plate flows out again, thereby the heat in the internal rotor magnet steel groove is taken out of, the thulium permanent magnet body is remained under the lower temperature move.
A kind of magnetic steel cooling tank structure is reasonable in design, simple in structure, because the magnet steel trench bottom at the rare-earth permanent magnet motor rotor-core lamination is provided with the ventilation cooling bath, rotor-core lamination both sides end plate is provided with the end plate ventilation hole, rotor-core lamination is after laminating, the end plate ventilation hole aligns with the ventilation cooling bath of rotor-core lamination upper magnetic steel bottom land, thereby strengthen the ventilation cooling of magnet steel trench bottom, the temperature that produces the generation of step-out situation lower magnetic steel at rare-earth permanent magnet motor obtains good heat radiating, guarantees that rare-earth permanent magnet motor can normally move.The utility model can be widely used in asynchronous three-phase rare-earth permanent-magnet motor, frequency control rare-earth permanent magnet motor, brushless direct-current permanent magnet motor etc. and adopt built-in rare-earth permanent magnet motor.
Description of drawings
The utility model is described in further detail below with reference to accompanying drawing:
Fig. 1 is a kind of magnetic steel cooling tank structure and user mode schematic diagram thereof.
Fig. 2 is a kind of A-A cutaway view of magnetic steel cooling tank structure.
Among the figure: 1, main shaft, 2, magnetism-isolating loop, 3, rotor-core lamination, 4, the thulium permanent magnet body, 5, the damping slot wedge, 6, the ventilation cooling bath, 7, the magnet steel groove, 8, end plate, 9, the end plate ventilation hole.
Embodiment
With reference to accompanying drawing 1,2, a kind of magnetic steel cooling tank structure is that the magnet steel trench bottom at rare-earth permanent magnet motor rotor-core lamination 3 is provided with ventilation cooling bath 6, rotor-core lamination 3 is after laminating, rotor core both sides end plate 8 is provided with end plate ventilation hole 9, rotor-core lamination 3 is after laminating, and end plate ventilation hole 9 aligns with the ventilation cooling bath 6 of rotor-core lamination 3 upper magnetic steel bottom lands.When rare-earth permanent magnet motor moves, motor cooling air-flow can enter from end plate ventilation hole 9, pass the magnet steel trench bottom and be provided with rectangle ventilation cooling bath 6, the end plate ventilation hole 9 that is provided with from other end end plate 8 flows out again, thereby the heat in the internal rotor magnet steel groove 7 is taken out of, thulium permanent magnet body 4 is remained under the lower temperature move.
Described ventilation cooling bath 6 adopts rectangle ventilation cooling bath.
During use, after the rotor-core lamination 3 that magnet steel groove 7 bottoms of rare-earth permanent magnet motor rotor-core lamination are provided with ventilation cooling bath 6 laminates, be assembled on the rare-earth permanent magnet motor main shaft 1, between main shaft 1 and the rotor-core lamination 3 magnetism-isolating loop 2 is housed, in the magnet steel groove 7 of rotor-core lamination 3, load onto thulium permanent magnet body 4, be equipped with damping slot wedge 5 in thulium permanent magnet body 4 outsides, load onto end plate 8 in rotor-core lamination 3 both sides, end plate ventilation hole 9 aligns with the ventilation cooling bath 6 at 7 ends of rotor-core lamination 3 upper magnetic steel grooves, be assembled into the rare-earth permanent magnet motor rotor, can dress up novel rare-earth permanent magnet motor with the rare-earth permanent magnet motor stator pack with magnetic steel cooling tank structure.
Claims (2)
1. magnetic steel cooling tank structure, it is characterized in that being provided with the ventilation cooling bath at the magnet steel trench bottom of rare-earth permanent magnet motor rotor-core lamination, rotor-core lamination both sides end plate is provided with the end plate ventilation hole, rotor-core lamination is after laminating, and the end plate ventilation hole aligns with the ventilation cooling bath of rotor-core lamination upper magnetic steel bottom land.
2. a kind of magnetic steel cooling tank structure according to claim 1 is characterized in that described ventilation cooling bath adopts rectangle ventilation cooling bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201640479U CN201690284U (en) | 2010-04-19 | 2010-04-19 | Magnetic steel cooling trough structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201640479U CN201690284U (en) | 2010-04-19 | 2010-04-19 | Magnetic steel cooling trough structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201690284U true CN201690284U (en) | 2010-12-29 |
Family
ID=43378561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201640479U Expired - Fee Related CN201690284U (en) | 2010-04-19 | 2010-04-19 | Magnetic steel cooling trough structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201690284U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807826A (en) * | 2010-04-19 | 2010-08-18 | 江苏爱尔玛电机制造有限公司 | Magnetic steel cooling tank structure |
| CN102352815A (en) * | 2011-09-15 | 2012-02-15 | 新疆金风科技股份有限公司 | Wind generating set |
| CN111373633A (en) * | 2017-11-16 | 2020-07-03 | Lg伊诺特有限公司 | Electric machine |
-
2010
- 2010-04-19 CN CN2010201640479U patent/CN201690284U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807826A (en) * | 2010-04-19 | 2010-08-18 | 江苏爱尔玛电机制造有限公司 | Magnetic steel cooling tank structure |
| CN102352815A (en) * | 2011-09-15 | 2012-02-15 | 新疆金风科技股份有限公司 | Wind generating set |
| CN111373633A (en) * | 2017-11-16 | 2020-07-03 | Lg伊诺特有限公司 | Electric machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUAN XIAOMEI Free format text: FORMER OWNER: JIANGSU ELWAR MOTOR MANUFACTURING CO., LTD. Effective date: 20120928 Owner name: GUAN YU Effective date: 20120928 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120928 Address after: 225200 Chen Cheng Industrial Park, Jiangdu District, Jiangsu, Yangzhou Patentee after: Guan Xiaomei Patentee after: Guan Yu Address before: 225200 Jiangsu Province Jiangdu Longchuan Industrial Park Bangweilu Patentee before: Jiangsu Aierma Motor Manufacturing Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU ELWAR MOTOR MANUFACTURING CO., LTD. Free format text: FORMER OWNER: GUAN XIAOMEI Effective date: 20121108 Free format text: FORMER OWNER: GUAN YU Effective date: 20121108 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121108 Address after: 225200 Chen Cheng Industrial Park, Jiangdu District, Jiangsu, Yangzhou Patentee after: Jiangsu Aierma Motor Manufacturing Co., Ltd. Address before: 225200 Chen Cheng Industrial Park, Jiangdu District, Jiangsu, Yangzhou Patentee before: Guan Xiaomei Patentee before: Guan Yu |
|
| 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: 20101229 Termination date: 20160419 |