CN2638318Y - Rare earth permanent-magnetic synchronous motor with ventilation slot - Google Patents
Rare earth permanent-magnetic synchronous motor with ventilation slot Download PDFInfo
- Publication number
- CN2638318Y CN2638318Y CN 03258885 CN03258885U CN2638318Y CN 2638318 Y CN2638318 Y CN 2638318Y CN 03258885 CN03258885 CN 03258885 CN 03258885 U CN03258885 U CN 03258885U CN 2638318 Y CN2638318 Y CN 2638318Y
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- CN
- China
- Prior art keywords
- synchronous motor
- rotor
- ventilation slot
- earth permanent
- rare
- 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
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Abstract
The utility model discloses a rare earth permanent magnetic synchronous motor with a ventilating slot, comprising a rotor, a stator, a rotating shaft and a shell. The rotor comprises a magnetic pole core that is assembled by the sector folded sheet steel, and the magnetic pole core is positioned on a magnetism isolating sleeve outside the rotating shaft. The alnico is positioned tangentially between the magnetic pole cores. An axial vent gutter is positioned between the alnico and the magnetism isolating sleeve, a spiral vent gutter is positioned on the surface of the rotor. A squirrel-cage bar is arranged at interval by the brass bar and the copper bar. The utility model has good rigidity of the rotor, low starting current, large torque, good energy index, low exotherm, rapid start and stable operation, thereby solving the problem of the loss of excitation of the permanent magnet in the current permanent magnet synchronous motor, greatly increasing the quality factor of the power network, fully exerting the capacity of the current power network and especially meeting the needs of the power of the oil suction.
Description
Technical field
The utility model relates to a kind of motor, a kind of rare-earth permanent-magnet synchronous motor of saying so more specifically.
Background technology
Rare-earth permanent-magnet synchronous motor is more the same than common synchronous motor, all is made up of rotor and stator, has high efficiency, High Power Factor, and the Remarkable Energy Saving characteristics are widely used.But also there are some technical defectives in rare-earth permanent-magnet synchronous motor, and starting current is big, and the starting quality factor is poor; Magnetic pole adopts annular cold rolling steel disc to laminate assembling, and rigidity is poor, the processing technology complexity; And the rotor of permanent magnet synchronous motor heats up too high, and when induction-motor load was periodically pulsing, rotor heated up higher and faster, makes permanent magnet produce irreversible magnetic loss, causes the permanent magnet loss of excitation and loses efficacy.
The utility model content
The purpose of this utility model provides a kind of rare-earth permanent-magnet synchronous motor that has ventilation slot, can improve the rigidity of magnetic pole, reduces the temperature rise of rotor, improve starting torque, starting current is little, hangs down power factor height under load, the low-voltage, has solved the problem of permanent magnet loss of excitation.
The technical solution of the utility model is as follows:
Have the rare-earth permanent-magnet synchronous motor of ventilation slot, include rotor, stator, rotating shaft, casing is characterized in that rotor surface has the spiral ventilation slot.
The axial ventilation groove is arranged on the magnet steel of rotor or on the magnetic pole, perhaps between magnet steel and the magnetic pole, the axial ventilation groove is arranged between magnet steel and the magnetic shield perhaps.
Rotor comprises being laminated by fan-shaped steel disc and is assembled into a pole core that pole core is installed on the outer magnetic shield of rotating shaft, and magnet steel is installed between the pole core.
It is fastening by the rivet break-through that described fan-shaped steel disc laminates the back, and the fan-shaped steel disc central authorities after laminating cross magnetic pole tension key and fix, and has pole bolt to pass magnetic pole tension key pole core is fixed on the magnetic shield.
Pole core is 2,4,6,8.
Described rotor squirrel-cage bar adopts brass rod and red copper bar to be intervally arranged, and the quantity ratio of brass rod and red copper bar is 1: 1～4.
The angle of pitch of ventilation slot is 10～30.
Described rotor one side is equipped with fan.
Described magnet steel is a permanent magnetic material NdFeB Nd-Fe-B permanent magnet.
Laminate after the punching out of rotor magnetic pole employing rolled steel plate and be assembled into an integral body, had stronger rigidity and favorable manufacturability.
Permanent-magnet steel is tangentially installed, and magnetic flux in parallel is bigger, and reluctance torque is bigger, improves the operation stability of motor.
When the utility model rotor rotates, the axial ventilation groove around the magnet steel and the spiral ventilation slot of rotor surface have constituted the ventilation cooling heat dissipation loop in the rotor, reduced the temperature of magnetic pole and magnet steel, prevent the heat demagnetization of permanent magnet, the no-load loss of motor can descend 25%, and rotor temperature rise descends 8～10.When motor load is big, on the rotor next door fan is installed, more can get the effect that reduces magnetic pole and magnet steel temperature rise, prolonged the useful life of rotor.
The utility model rotor starting cage strip adoption brass rod and red copper bar are intervally arranged, and make motor have very high starting torque and less starting current, have outstanding starting quality factor.
The utility model rotor adopts new rare-earth permanent magnetic material NdFeB Nd-Fe-B permanent magnet excitation, and has the self-starting winding, but across-the-line starting or reduced voltage starting, energy-efficient, energy index is good, and starting rapidly, operate steadily, volume is little, and is in light weight, temperature rise is low, simple to operate, greatly improved the quality factor of electrical network, give full play to the capacity of present electrical network, can satisfy the power needs of oil-field oil pumper especially, solve the phenomenon of low load with strong power in the load starting dragging system.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is that the utility model rotating shaft is to cutaway view.
Fig. 3 is the utility model transverse sectional view.
Fig. 4 is the utility model ventilation and heat loop schematic diagram.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4.The utility model is a kind of composite fabricated rotor rare-earth permanent-magnet synchronous motor, rotor 2 is arranged, stator 4, rotating shaft 3, casing 1, the rotating shaft 3 outer magnetic shields 15 that are equipped with, outside the magnetic shield 15 eight pole cores 13 are installed, pole core 13 two ends are equipped with end ring 8, and rotor starting squirrel-cage bar 9 is installed between the end ring 8, squirrel-cage bar 9 adopts brass rod and red copper bar to be intervally arranged, and the quantity ratio of brass rod and red copper bar is 1: 2.
Magnet steel 6 tangentially is installed between the pole core 13, magnet steel 6 is a flat, between magnet steel 6 and the magnetic shield 15 air duct 5 is arranged, pole core 13 is laminated by fan-shaped steel disc and assembles, fan-shaped steel disc laminates the back both ends of the surface and adds cover end plate 10, fastening by rivet 16, it is fixing that magnetic pole tension key 12 crosses in the fan-shaped steel disc central authorities after laminating, and each pole core all has a plurality of pole bolts 11 to pass magnetic pole tension key 12 pole core is installed on the magnetic shield 15.One end of rotor is equipped with circulating fan 14.The rotor outer round surface has spiral ventilation slot 7.
Claims (8)
1, have the rare-earth permanent-magnet synchronous motor of ventilation slot, include rotor, stator, rotating shaft, casing is characterized in that rotor surface has the spiral ventilation slot.
2, the rare-earth permanent-magnet synchronous motor that has ventilation slot according to claim 1 is characterized in that on the magnet steel of rotor or the axial ventilation groove is arranged on the magnetic pole, perhaps between magnet steel and the magnetic pole, the axial ventilation groove is arranged between magnet steel and the magnetic shield perhaps.
3, the rare-earth permanent-magnet synchronous motor that has ventilation slot according to claim 1 and 2, it is characterized in that rotor comprises being laminated by fan-shaped steel disc is assembled into a pole core, pole core is installed on the outer magnetic shield of rotating shaft, and magnet steel is installed between the pole core.
4, the rare-earth permanent-magnet synchronous motor that has ventilation slot according to claim 3, it is characterized in that described fan-shaped steel disc is fastening by the rivet break-through after laminating, fan-shaped steel disc central authorities after laminating cross magnetic pole tension key and fix, and have pole bolt to pass magnetic pole tension key pole core is fixed on the magnetic shield.
5, the rare-earth permanent-magnet synchronous motor that has ventilation slot according to claim 3 is characterized in that pole core is 2,4,6,8.
6, the rare-earth permanent-magnet synchronous motor that has ventilation slot according to claim 1 and 2 is characterized in that described rotor squirrel-cage bar adopts brass rod and red copper bar to be intervally arranged, and the quantity of brass rod and red copper bar is than being 1:1～4.
7, the rare-earth permanent-magnet synchronous motor that has ventilation slot according to claim 1, the angle of pitch that it is characterized in that ventilation slot is 10～30.
8, the rare-earth permanent-magnet synchronous motor that has ventilation slot according to claim 1 and 2 is characterized in that described rotor one side is equipped with fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03258885 CN2638318Y (en) | 2003-06-14 | 2003-06-14 | Rare earth permanent-magnetic synchronous motor with ventilation slot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03258885 CN2638318Y (en) | 2003-06-14 | 2003-06-14 | Rare earth permanent-magnetic synchronous motor with ventilation slot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2638318Y true CN2638318Y (en) | 2004-09-01 |
Family
ID=34295868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03258885 Expired - Lifetime CN2638318Y (en) | 2003-06-14 | 2003-06-14 | Rare earth permanent-magnetic synchronous motor with ventilation slot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2638318Y (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 |
| CN101931294A (en) * | 2009-06-18 | 2010-12-29 | 南通金驰机电有限公司 | Permanent-magnet synchronous motor |
| CN103401383A (en) * | 2013-08-05 | 2013-11-20 | 瑞安市宏发电器有限公司 | Rotor with insulated rotor shaft and iron core and starter of relevant motor |
-
2003
- 2003-06-14 CN CN 03258885 patent/CN2638318Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931294A (en) * | 2009-06-18 | 2010-12-29 | 南通金驰机电有限公司 | Permanent-magnet synchronous motor |
| 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 |
| CN103401383A (en) * | 2013-08-05 | 2013-11-20 | 瑞安市宏发电器有限公司 | Rotor with insulated rotor shaft and iron core and starter of relevant motor |
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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: ANHUI MINTENG PERMANENT MAGNET ELECTRICAL AND MEC Free format text: FORMER OWNER: LI HONGCHENG; PATENTEE Effective date: 20071123 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071123 Address after: Shuangfeng Industrial Development Zone, Hefei City, Anhui province Lulu gold No. 011, zip code: 230000 Patentee after: Anhui Mingteng Permanent-magnetic Machinery & Electrical Equipment Co., Ltd. Address before: Room 604, 34 Shushan new village, Hefei, Anhui, zip code: 230001 Co-patentee before: Wen Xu Patentee before: Lee hung Cheng |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130614 Granted publication date: 20040901 |