CN202135027U - Permanent magnet motor synthesized magnetic pole - Google Patents
Permanent magnet motor synthesized magnetic pole Download PDFInfo
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- CN202135027U CN202135027U CN201120054439U CN201120054439U CN202135027U CN 202135027 U CN202135027 U CN 202135027U CN 201120054439 U CN201120054439 U CN 201120054439U CN 201120054439 U CN201120054439 U CN 201120054439U CN 202135027 U CN202135027 U CN 202135027U
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- magnetic
- magnetic pole
- pole
- motor
- magnet steel
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Abstract
Common magnetic conductibility metal material is adopted to manufacture a magnetic pole, a pair of magnetic steels are placed in a commutating zone of the motor and the center of the magnetic pole according to the principle of magnetic field superposition, and magnetic lines of the magnetic steels directly pass through a curved surface of the magnetic pole and synthesize the magnetic field. The magnetic field of the synthesized magnetic pole is formed by the commutating zone and the magnetic pole center line magnetic steels, so flux density of the magnetic pole of the motor is substantially increased, operation efficiency of the motor is improved, and armature volume of the motor is reduced.
Description
Technical field
The utility model relates to the synthetic magnetic pole of a kind of magneto of magneto, is applied to dc permanent magnet motor, dc permanent magnetic generator etc. and does the excitation pole use.
Background technology
DC motor still is that DC generator all needs excitation pole; Magnetic pole can be made with solenoid, relies on the feeding electric current to produce magnetic field and reaches excitation; Also can use the permanent magnetic material manufacturing, produce permanent-magnetic field by permanent magnet and originate as magnetic flux.The permanent magnetism magnetic pole of utilization permanent magnetic material manufacturing has multifrequency nature such as easy to use, energy-conservation and just is being widely used and popularizes.Fig. 1 is a kind of bipolar machine field structure sketch map that uses permanent magnetic material to make; Its circle in support has been installed 1,4 two magnetic pole by the permanent magnetic material manufacturing up and down and has been constituted an excitation system, and support 3 plays yoke effect simultaneously and constitutes magnetic circuit.Because there is the switching-over requirement in direct current machine, so magnetic pole receives the restriction of pole embrace, between two magnetic poles, there is one section commutating zone 2, this commutating zone has occupied a part of motor internal space, has increased the volume of motor virtually.
Permanent magnetic material is of a great variety, but they have a common shortcoming to be highly brittle exactly, extremely is difficult to processing.In a lot of occasions the surface curve of magnetic pole there is higher requirement, uses permanent magnetism magnetic pole this moment and just have the difficulty that is difficult to overcome in the processing.In order to solve this contradiction; When particularly using rare earth permanent-magnetic material manufacturing magnetic pole, occurred synthetic field structure on the market, shown in Figure 2 is exactly a kind of synthetic magnetic pole sketch map of bipolar machine; Its common magnetic conductive metal material manufacture of magnetic pole 1,4 usefulness; Place two blocks of magnet steel 2,5 in the same way at commutating zone, constitute magnetic circuit through magnetic pole and realize excitation function, moving towards of its magnetic line of force is as shown in Figure 2; One of defective that the magnetic pole of this magnetic structure exists is that centermost is almost nil because near the magnetic line of force that the magnetic characteristic principle of same-sex repulsion passes through the center line of magnetic pole is especially little; And the motor pole centermost is an armature coil element cutting magnetic line maximum speed position, and the magnetic flux density here is zero to make that the output potential of motor also is zero, thereby has reduced the operational efficiency of motor.Two of defective is that the outside support part of the magnetic pole of motor must be used the non-magnetic material manufacture; Otherwise must cause the short circuit of magnetic circuit and make the motor loss of excitation; In the practical application mostly by the aluminum manufacturing; This type material is price height but also insufficient strength not only, and this just causes the rising of manufacturing cost to need to strengthen material usage.Three of defective is that the commutating zone space is less, and the magnet steel consumption that can place is not enough, and the manufacturing cost that the magnetic energy product of magnetic pole makes the armature part must amplify whole electric system inadequately rises greatly.
Summary of the invention
The utility model technical problem to be solved is: through the innovation to the magnetic poles line structure, change the magnetic pole magnetic circuit and form structure, reach the purpose that strengthens the motor pole magnetic flux density, reduce the manufacturing cost of armature simultaneously; Can also use in addition to be prone to rapidoprint manufacturing magnetic pole curved surface, the magnetic pole curve form required occasion can when making magnetic pole, reduction make difficulty of processing, the precision of raising Distribution of Magnetic Field.
The utility model to solve the technical scheme that its technical problem adopts and be: make full use of the motor internal arrangement space and place manyly, make each to the common motor excitation magnetic flux of forming of magnetic flux stack of magnet steel, to reach the purpose that improves the motor magnetic flux density to magnet steel; Through selecting the different metallic material manufacture for use in the different piece of magnetic circuit, there is good machinability in the place that makes the pole surface curve have relatively high expectations, improves the accuracy of manufacture to reduce the Machining of Curved Surface difficulty.Its essential characteristic is formed magnetic excitation circuit by commutating zone magnet steel, pole center district magnet steel, magnetic pole etc., and the work magnetic field of magnetic pole is by the synthetic purpose that reaches enhancing work magnetic field of two blocks of commutating zone magnet steel and magnet steel magnetic field, two pole center districts.At magnetic pole magnet isolation tank is arranged between shell, effectively stoped the leakage field of commutating zone magnet steel.Specific practice is like Fig. 3; Place two permanent magnets 5,10 at pole center and constitute main flux, place two permanent magnets 2,7 separately at commutating zone and constitute additional magnetic flux, two magnetic fluxs are producing main pole under the stack acting in conjunction on the magnetic pole bodies 4,8; Because magnetic pole bodies 4,8 can be by common permeability magnetic material such as electrical pure iron manufacturing; So good processability, the pole surface curve precision of processing is high, has therefore improved the distribution precision of motor-field.Magnet leaves air gap 3 between shell, play the separated magnetic effect between magnet and the shell, has prevented the leakage field that the commutating zone magnet steel produces through shell effectively.It is as shown in Figure 4 that the magnetic line of force moves towards.Fig. 4 is a special case of the synthetic magnetic pole of 2 utmost points, and it is 2p that actual synthetic magnetic pole can be processed any logarithm, and p is the synthetic magnetic pole of natural integer, to satisfy different needs.
Use the obtainable usefulness of the utility model that 2 points are arranged: one, utilization the utility model motor excitation magnetic is close exceeds general structural electromotor far away, can make full use of the armature material to equal-wattage grade motor and reduce volume and practice thrift manufacturing cost; Two, because the magnetic pole pole-face partly uses common permeability magnetic material manufacturing, handling ease magnetic pole surface accuracy is high, makes the runnability of motor obtain good improvement.
Description of drawings
The bipolar machine field structure sketch map that Fig. 1 is traditional; 1,4 is main pole, and 2 is commutating zone, and 3 is shell.
Fig. 2 uses the bipolar machine structure and the magnetic line of force of synthetic field structure to move towards sketch map; 1,4 is main pole, and 2,5 is permanent magnet, and 3 is the shell yoke.
Fig. 3 the utility model synthesizes the field structure sketch map; The 1st, the shell yoke, 2,7 are placed on the additional permanent magnet of commutating zone, and 3 is at a distance from magnetic air gap, 4,8 magnetic poles, 5,10 are placed on the permanent magnet of main pole position, and 9 are the fixing screw of usefulness.
The synthetic magnetic poles line of force of Fig. 4 the utility model is moved towards sketch map.
Embodiment
Fig. 3 is a bipolar machine special case of the utility model, and Fig. 4 is that the magnetic line of force moves towards figure.Among the figure the 4, the 8th, the motor pole polar body with magnetic conductive metal material such as electrical pure iron are made because material has good processing properties, satisfies the motor performance requirement so the surface 4 of magnetic pole can be easy to process various curves.2,7 be mounted in commutating zone a pair of commutating zone magnet steel, its magnetic field is to magnetize along its length, through magnetic pole resultant magnetic field in the same way, magnetic line of force trend is seen shown in Figure 4.5, the 10th, be arranged in a pair of center magnet steel on the field axis; Its magnetizing direction is by radial magnetizing; It is superimposed that the magnetic line of force produces the magnetic line of force at motor center part and commutating zone magnet steel, and through the synthesis of the magnetic line of force, the density that has not only strengthened magnetic flux has also overcome the few defective of pole center line magnetic flux; Make the even of whole motor center magnetic field change, very help the working excitation of motor.
The 1st, support is the shell of motor just; Between the shell support, leave space 3 at magnetic pole; This space, road is that magnet isolation tank plays very crucial iris action, has guaranteed that commutating zone magnet steel magnetic flux must could closure guarantee that magnetic flux has improved efficiency of motor through main pole to greatest extent through magnetic pole.
Magnet steel and the magnetic pole screw through 9 four directions is fastened on to be realized fixingly on the support, the screw of regulating four direction can be regulated the center of magnetic circuit, has guaranteed the concentricity of motor.
Claims (3)
1. a magneto synthesizes magnetic pole; Its essential characteristic is formed magnetic excitation circuit by commutating zone magnet steel, pole center district magnet steel, magnetic pole etc., and the work magnetic field of magnetic pole is by the synthetic purpose that reaches enhancing work magnetic field of two blocks of commutating zone magnet steel and magnet steel magnetic field, two pole center districts.
2. magneto according to claim 1 synthesizes magnetic pole, it is characterized in that at magnetic pole magnet isolation tank being arranged between shell, has effectively stoped the leakage field of commutating zone magnet steel.
3. magneto according to claim 1 and 2 synthesizes magnetic pole, it is characterized in that synthetic magnetic pole logarithm is 2p, and p is a natural integer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120054439U CN202135027U (en) | 2011-02-25 | 2011-02-25 | Permanent magnet motor synthesized magnetic pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120054439U CN202135027U (en) | 2011-02-25 | 2011-02-25 | Permanent magnet motor synthesized magnetic pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202135027U true CN202135027U (en) | 2012-02-01 |
Family
ID=45523783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120054439U Expired - Fee Related CN202135027U (en) | 2011-02-25 | 2011-02-25 | Permanent magnet motor synthesized magnetic pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202135027U (en) |
-
2011
- 2011-02-25 CN CN201120054439U patent/CN202135027U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120201 Termination date: 20130225 |