CN101807826A - Magnetic steel cooling tank structure - Google Patents
Magnetic steel cooling tank structure Download PDFInfo
- Publication number
- CN101807826A CN101807826A CN 201010151268 CN201010151268A CN101807826A CN 101807826 A CN101807826 A CN 101807826A CN 201010151268 CN201010151268 CN 201010151268 CN 201010151268 A CN201010151268 A CN 201010151268A CN 101807826 A CN101807826 A CN 101807826A
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- permanent magnet
- earth permanent
- magnetic steel
- end plate
- cooling tank
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a magnetic steel cooling tank structure, relating to a magnetic steel cooling tank structure of rare earth permanent magnet synchronous motor, applicable to built-in rare earth permanent magnet motors such as asynchronous start three-phase rare earth permanent magnet motor, frequency variable rare earth permanent magnet motor, brushless direct current permanent magnet motor. The bottom of the magnetic steel tank of rotor core stamping piece of rare earth permanent magnet motor is provided with an aeration cooling tank, the end plates at the two sides of the rotor core stamping piece are provided with an end plate aeration hole, the rotor core stamping piece is laminated, the end plate aeration hole and the aeration cooling tank arranged at the bottom of the magnetic steel tank on the rotor core stamping piece are aligned. The aeration cooling tank is rectangular. When rare earth permanent magnet motor is in operation, cooling air current of motor can enter from the end plate aeration hole, penetrate the rectangular aeration cooling tank arranged at the bottom of the magnetic steel tank and then flow out from the end plate aeration hole arranged on the other end plate, thus heat in the magnetic steel tank in the interior of rotor is taken away and the rare earth permanent magnet motor can be ensured to operate at lower temperature.
Description
Technical field
What a kind of magnetic steel cooling tank structure of the present invention 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 present invention seeks to provides 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 anti-oxidation coating that should add the high magnetic steel surface that it is considered herein that magnet steel is handled, 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 present invention 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 present invention 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 invention will be further described 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 |
|---|---|---|---|
| CN 201010151268 CN101807826A (en) | 2010-04-19 | 2010-04-19 | Magnetic steel cooling tank structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010151268 CN101807826A (en) | 2010-04-19 | 2010-04-19 | Magnetic steel cooling tank structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101807826A true CN101807826A (en) | 2010-08-18 |
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ID=42609480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010151268 Pending CN101807826A (en) | 2010-04-19 | 2010-04-19 | Magnetic steel cooling tank structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101807826A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801238A (en) * | 2012-08-15 | 2012-11-28 | 北京交通大学 | Permanent magnet motor rotor beneficial for radiating |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2638318Y (en) * | 2003-06-14 | 2004-09-01 | 李鸿程 | Rare earth permanent-magnetic synchronous motor with ventilation slot |
| CN201690284U (en) * | 2010-04-19 | 2010-12-29 | 江苏爱尔玛电机制造有限公司 | Magnetic steel cooling trough structure |
-
2010
- 2010-04-19 CN CN 201010151268 patent/CN101807826A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2638318Y (en) * | 2003-06-14 | 2004-09-01 | 李鸿程 | Rare earth permanent-magnetic synchronous motor with ventilation slot |
| CN201690284U (en) * | 2010-04-19 | 2010-12-29 | 江苏爱尔玛电机制造有限公司 | Magnetic steel cooling trough structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801238A (en) * | 2012-08-15 | 2012-11-28 | 北京交通大学 | Permanent magnet motor rotor beneficial for radiating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100818 |