CN202395534U - Permanent magnet of DC ferrite permanent magnet motor - Google Patents
Permanent magnet of DC ferrite permanent magnet motor Download PDFInfo
- Publication number
- CN202395534U CN202395534U CN2011205596003U CN201120559600U CN202395534U CN 202395534 U CN202395534 U CN 202395534U CN 2011205596003 U CN2011205596003 U CN 2011205596003U CN 201120559600 U CN201120559600 U CN 201120559600U CN 202395534 U CN202395534 U CN 202395534U
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- magnetic pole
- motor
- pole body
- ferrite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model discloses a permanent magnet of a DC (direct current) ferrite permanent magnet motor. The permanent magnet comprises a magnetic pole body made of ferrite materials, wherein the pole arc coefficient ap of the magnetic pole body is equal to 180 DEG. *0.82, the axial length of the magnetic pole body is 1.3 times of the length of a rotor core, the magnetic pole body is in an arc structure, two sides of the magnetic pole body are in the eccentric shapes, and an air gap is gradually widened from the central line of the magnetic pole body to the two sides. The permanent magnet of the DC ferrite permanent magnet motor is made of ferrite materials, the pole arc coefficient and the axial length of the magnetic pole body are enhanced so as to enhance the total magnetic flux of the motor, the two sides of the magnetic pole bodies are made into the eccentric shapes to gradually widen the air gap from the central line of the magnetic pole body to the two sides, thus the degree of magnetic field distortion caused by armature reaction can be lowered, and the reversing condition can be efficiently improved so as to realize the conversion from a neodymium-iron-boron DC permanent magnet motor to the DC ferrite permanent magnet motor. On the premise of not lowering the basic performance of the product and basically not changing the shape and the size of the motor, the permanent magnet can reduce the production cost of the motor so as to meet the market requirements.
Description
Technical field
The utility model relates to a kind of DC motor permanent magnet, relates in particular to a kind of ferrite permanent-magnet DC motor permanent magnet.
Background technology
Many institutes are thoughtful, and permanent magnet direct current motor is a DC motor of being set up excitation field by permanent magnet.It except the favorable mechanical characteristic that has general electromagnetic motor and possess and regulating characteristics and speed-regulating range width be convenient to the characteristics such as control, have also that volume is little, efficient is high, advantages of simple structure and simple.
The application of permanent magnet direct current motor very extensively.Owing to high-performance, a large amount of appearance of permanent magnetic material cheaply, make permanent magnet direct current motor unprecedented development occur in recent years.Particularly along with the development of high performance permanent magnetic materialses such as neodymium iron boron, permanent magnet direct current motor from miniature to small-sized development.
But in recent years; High performance permanent magnetic materialses such as neodymium iron boron are because its some main raw material(s)s such as metal praseodymium neodymium, Dy-Fe alloy are to belong to the national strategy goods and materials and price is raised on the way; Straight line rises; Therefore, the cost of this motor is multiplied, thereby has restricted the production and sales of Nd-Fe-B permanent magnetic direct current machine.
The utility model content
The purpose of the utility model is to provide a kind of ferrite permanent-magnet DC motor permanent magnet; It has low price; Manufacturing process is simple; Adopt Ferrite Material to process permanent magnet, and the change of the field structure through permanent magnet to be to substitute the Nd-Fe-B permanent magnetic DC motor, to have solved effectively that there is the cost problem of higher in the Nd-Fe-B permanent magnetic DC motor in the prior art.
The purpose of the utility model is to realize through following technical scheme:
A kind of ferrite permanent-magnet DC motor permanent magnet; It comprises the magnetic pole bodies of being processed by Ferrite Material; Pole embrace α p=180 ° * 0.82 of said magnetic pole bodies, magnet axial length is 1.3 of rotor core length, and said magnetic pole bodies is an arcuate structure; And its both sides are eccentric shape, and air-gap is increased by pole center alignment both sides gradually.
The beneficial effect of the utility model does; Said ferrite permanent-magnet DC motor permanent magnet adopts Ferrite Material to process, and has increased the pole embrace and the total magnetic flux of axial length with the increase motor of magnetic pole bodies simultaneously, and the both sides of magnetic pole bodies are made into eccentric shape; Air-gap is increased by pole center alignment both sides gradually; Make that the armature magnetomotive force larger part is corresponding to have a bigger air-gap, reduced because the degree of the distortion of field that armature reaction causes can effectively be improved the switching-over condition; Realized the conversion of Nd-Fe-B permanent magnetic DC motor and ferrite permanent-magnet motor; Under the prerequisite that key property satisfying product does not descend, motor overall dimension is constant basically, reduced the production cost of motor, met the need of market.
Description of drawings
According to accompanying drawing and embodiment the utility model is done further explain below.
Fig. 1 is the structural representation of the utility model ferrite permanent-magnet DC motor permanent magnet.
Embodiment
Please with reference to shown in Figure 1, Fig. 1 is the structural representation of the utility model ferrite permanent-magnet DC motor permanent magnet.In the present embodiment; The magnetic pole bodies 1 of said ferrite permanent-magnet DC motor permanent magnet is processed by strontium ferrite; Its main component is the magnet with structure of hexagonal crystal of Sr0.6Fe2O3; Adopt iron oxide Fe2O3, strontium carbonate and additive to process with powder metallurgic method, said additive is mixed by calcium carbonate and anhydrous alumina.Magnetize after drying sintering again.This ferrite permanent magnet is low price not only, and manufacturing process is simple.But magnetic property is compared with Nd-Fe-B permanent magnet, and gap is bigger.Therefore, the total magnetic flux that how to improve the ferrite magnetic pole is a key for design.Under the constant basically situation of motor overall volume, improve the structure of magnetic pole bodies 1.
The energy index of motor is related with the motor total magnetic flux, and relevant with the sectional area of magnetic pole bodies with the total magnetic flux of the magnetic pole bodies of permanent magnetism as motor.In order to improve the energy index of motor; Under the prerequisite that does not change motor overall dimension; This pole embrace α p is chosen for (180 ° * 0.82), and magnet axial length 1m is chosen for 1.3 of rotor core length, and thickness is by conventional design; Thereby increase its effective sectional area, make the motor total magnetic flux increase about 18%.But can cause neutral region to reduce after pole embrace α p increases and make the deterioration of switching-over condition.Therefore; We make eccentric air gap with the air gap between motor rotor and stator, and promptly said magnetic pole bodies 1 is an arcuate structure, and its both sides are made into eccentric shape; Air-gap is increased by pole center alignment both sides gradually; Make that the armature magnetomotive force larger part is corresponding to have a bigger air-gap, reduced because the degree of the distortion of field that armature reaction causes, thereby effectively improved the switching-over condition.Through the change of this field structure design, under the constant situation of same motor external diameter and length, the energy index of motor is corresponding to have improved 15%.
Claims (1)
1. ferrite permanent-magnet DC motor permanent magnet; It is characterized in that: comprise the magnetic pole bodies of processing by Ferrite Material; Pole embrace α p=180 ° * 0.82 of said magnetic pole bodies, magnet axial length is 1.3 of rotor core length, and said magnetic pole bodies is an arcuate structure; And its both sides are eccentric shape, and air-gap is increased by pole center alignment both sides gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205596003U CN202395534U (en) | 2011-12-29 | 2011-12-29 | Permanent magnet of DC ferrite permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205596003U CN202395534U (en) | 2011-12-29 | 2011-12-29 | Permanent magnet of DC ferrite permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202395534U true CN202395534U (en) | 2012-08-22 |
Family
ID=46670434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205596003U Expired - Lifetime CN202395534U (en) | 2011-12-29 | 2011-12-29 | Permanent magnet of DC ferrite permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202395534U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412636A (en) * | 2011-12-29 | 2012-04-11 | 无锡江南奕帆电力传动科技股份有限公司 | Permanent magnet of ferrite permanent magnet direct-current motor |
-
2011
- 2011-12-29 CN CN2011205596003U patent/CN202395534U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412636A (en) * | 2011-12-29 | 2012-04-11 | 无锡江南奕帆电力传动科技股份有限公司 | Permanent magnet of ferrite permanent magnet direct-current motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104242509B (en) | A kind of permanent magnetism is combined excitatory synchronous electric motor rotor | |
| CN202231588U (en) | Permanent magnetism motor | |
| CN101409121A (en) | Neodymium iron boron permanent magnet for motor and manufacturing method thereof | |
| CN203554097U (en) | Permanent-magnet compound excitation synchronous motor rotor | |
| CN202395534U (en) | Permanent magnet of DC ferrite permanent magnet motor | |
| CN102761210B (en) | Composite permanent-magnet rotor for permanent-magnet motor and manufacturing method thereof | |
| CN202978479U (en) | Motor rotor and motor and compressor comprising same | |
| CN206211697U (en) | A kind of rotor structure, permagnetic synchronous motor and compressor | |
| CN210640748U (en) | Mixed excitation rotor and mixed excitation surface-mounted permanent magnet motor | |
| CN103401329A (en) | Novel permanent-magnet motor rotor | |
| CN203377700U (en) | Novel permanent magnet motor rotor | |
| CN106655568A (en) | High-performance interior-ferrite permanent magnet (IPM) motor | |
| CN102044948A (en) | Rotor and linear motor applying same | |
| CN102412636A (en) | Permanent magnet of ferrite permanent magnet direct-current motor | |
| CN204288994U (en) | A kind of slug type rare-earth permanent magnet reducing eddy current loss | |
| CN202153674U (en) | Magnetic circuit structure for motor | |
| CN202395552U (en) | Novel energy-saving motor for industrial sewing machine | |
| CN202824654U (en) | Sintered Nd-Fe-B pressing mold | |
| CN202798172U (en) | Mixed excitation claw pole motor composite magnetic steel | |
| CN112259314A (en) | R (Fe, M)12Rare earth permanent magnetic material and preparation method thereof | |
| CN201655463U (en) | Neodymium-iron-boron magnet with epoxy layer | |
| CN201528261U (en) | Permanent magnetism three-phase synchronous motor rotor terminal structure | |
| CN206313546U (en) | A kind of automobile-used keying motor stator | |
| CN202711889U (en) | Anti-direct-current-bias magnetic powder core provided with external permanent magnet sleeve layer | |
| CN114172343B (en) | Hybrid magnetic pole linear motor based on air gap magnetic flux density waveform sine design |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Yuanji Inventor after: Chen Yifeng Inventor before: Chen Yuanji Inventor before: Chen Bojin Inventor before: Chen Yifeng Inventor before: Chu Xiaomin Inventor before: Ge Xin Inventor before: Chen Yimin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CHEN YUANJI CHEN BOJIN CHEN YIFENG CHU XIAOMIN GE XIN CHEN YIMIN TO: CHEN YUANJI CHEN YIFENG |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Permanent magnet of ferrite permanent magnet direct-current motor Effective date of registration: 20140312 Granted publication date: 20120822 Pledgee: Bank of Jiangsu, Limited by Share Ltd, Wuxi science and Technology Branch Pledgor: Wuxi Jiangnan Yifan Motor Co., Ltd. Registration number: 2014990000155 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160128 Granted publication date: 20120822 Pledgee: Bank of Jiangsu, Limited by Share Ltd, Wuxi science and Technology Branch Pledgor: Wuxi Jiangnan Yifan Motor Co., Ltd. Registration number: 2014990000155 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |