CN103269135A - Movable magnetic steel built-in-type permanent magnet motor rotor structure - Google Patents

Movable magnetic steel built-in-type permanent magnet motor rotor structure Download PDF

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Publication number
CN103269135A
CN103269135A CN2013101704924A CN201310170492A CN103269135A CN 103269135 A CN103269135 A CN 103269135A CN 2013101704924 A CN2013101704924 A CN 2013101704924A CN 201310170492 A CN201310170492 A CN 201310170492A CN 103269135 A CN103269135 A CN 103269135A
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CN
China
Prior art keywords
magnet steel
magnetic steel
elastic
rotor
rotor core
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.)
Pending
Application number
CN2013101704924A
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Chinese (zh)
Inventor
曹冠晖
吴进山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dewos (hangzhou) Electric & Technology Co Ltd
Original Assignee
Dewos (hangzhou) Electric & Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to CN201310097221 priority Critical
Priority to CN201310097221.0 priority
Application filed by Dewos (hangzhou) Electric & Technology Co Ltd filed Critical Dewos (hangzhou) Electric & Technology Co Ltd
Priority to CN2013101704924A priority patent/CN103269135A/en
Publication of CN103269135A publication Critical patent/CN103269135A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a motor rotor, and provides a movable magnetic steel built-in-type permanent magnet motor rotor structure. The movable magnetic steel built-in-type permanent magnet motor rotor structure comprises a rotor iron core, magnetic steel, an elastic device and magnetism separation materials. At least two magnetic steel grooves are formed in the rotor iron core. An angle is formed between the directions of the magnetic steel grooves and the radial direction of the rotor iron core. The magnetic steel is alternately embedded inside the magnetic steel grooves according to the N-pole and the S-pole. The magnetic steel can move inside the magnetic steel grooves in the direction of the magnetic steel grooves. The elastic device is installed at one end, close to the outer circle of the rotor iron core, of the magnetic steel. The magnetism separation materials are installed at the tail end, close to the outer circle of the rotor iron core, of the magnetic steel and on two sides of the elastic device. The elastic device and the magnetic separation materials are embedded inside the magnetic steel grooves. According to the movable magnetic steel built-in-type permanent magnet motor rotor structure, the magnetic steel can freely move inside the magnetic steel grooves, the angle of the magnetic steel and the elasticity of the elastic device can be calculated and set as required, under different rotating speeds, the displacement distance of the magnetic steel is limited, and accurate control is achieved.

Description

Removable magnet steel interior permanent magnet machines rotor structure
Technical field
The invention relates to a kind of rotor, particularly a kind of removable magnet steel interior permanent magnet machines rotor structure.
Background technology
Magneto has simple in structure, reliable, remarkable advantages such as volume is little, quality is light, loss is few, efficient height at present, thereby range of application is very extensive, almost spreads all over the every field of Aero-Space, national defence, automobile, industrial and agricultural production and daily life.
Common magnet steel interior permanent magnet machines rotor structure all is made up of rotating shaft, rotor core and permanent magnet, and permanent magnet generally all is fixedly mounted in the groove of rotor core regularly, can't be free movable, thus also can't be regulated by the excitation magnetomotive force that permanent magnet produces.When the terminal voltage of magneto reaches ceiling voltage, in order to make electronic function output-constant operation in higher rotating speed, can't carry out weak magnetism speed expansion by regulating the stator and rotor air-gap flux.
Summary of the invention
Main purpose of the present invention is to overcome deficiency of the prior art, and a kind of motor rotor construction that can realize weak magnetism speed expansion is provided.For solving the problems of the technologies described above, solution of the present invention is:
A kind of removable magnet steel interior permanent magnet machines rotor structure is provided, comprise rotor core, also comprise magnet steel, elastic device and NULL, rotor core is provided with at least two magnet steel grooves, the direction of magnet steel groove and rotor core radial shape are angled, magnet steel is pressed the N utmost point, the S utmost point alternately is inlaid in each magnet steel groove, magnet steel can move along magnet steel groove direction in the magnet steel groove, elastic device is installed in magnet steel near an end of rotor core cylindrical, magnet steel is equipped with NULL near the end of rotor core cylindrical and the both sides of elastic device, and elastic device and NULL are inlaid in the magnet steel groove.
As further improvement, described elastic device is spring.
As further improvement, the iron core that described rotor core forms for the ring-shaped silicon steel sheet closed assembly.
As further improvement, described NULL is that magnetic permeability is less than the material of the silicon steel sheet magnetic permeability of rotor core.
As further improvement, be evenly distributed with even number magnet steel groove in the described rotor core.
As further improvement, described adjacent magnet steel groove is V-arrangement or the non-V-arrangement that relative rotor core radial symmetric distributes.
Compared with prior art, the invention has the beneficial effects as follows:
Elastic device and NULL have been increased in the magnet steel groove of rotor core, make that magnet steel can be free movable in the magnet steel groove, the angle of magnet steel and the elastic force of elastic device can calculate setting as required, under different rotating speeds, the displacement of restriction magnet steel reaches accurate control.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 for of the present invention be to implement illustration.
Reference numeral among the figure is: 1 rotor core; 2 magnet steel; 3 elastic devices; 4 NULL; The 5 N utmost points; The 6 S utmost points.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
Removable magnet steel interior permanent magnet machines rotor structure among Fig. 1 comprises rotor core 1, magnet steel 2, elastic device 3 and NULL 4, rotor core 1 is formed by the ring-shaped silicon steel sheet closed assembly, the magnetic permeability of NULL 4 is less than the magnetic permeability of the silicon steel sheet of rotor core 1, and elastic device 3 is spring.Be evenly distributed with 12 magnet steel grooves in the rotor core 1, the direction of magnet steel groove and rotor core 1 radial shape are angled, and adjacent magnet steel groove is the V-arrangement that relative rotor core 1 radial symmetric distributes.Magnet steel 2 alternately is inlaid in each magnet steel groove by the N utmost point 5, the S utmost point 6, and magnet steel 2 can move along magnet steel groove direction in the magnet steel groove.Elastic device 3 is installed in magnet steel 2 near an end of rotor core 1 cylindrical, and magnet steel 2 is equipped with NULL 4 near the end of rotor core 1 cylindrical and the both sides of elastic device 3, and elastic device 3 and NULL 4 are inlaid in the magnet steel groove.
Magnet steel 2 is pushed by elastic device 3 when stationary rotor or low speed rotation, near the bottom of V-shaped groove, and the contact area maximum of this moment magnet steel 2 and rotor core 1, the magnetic flux of dispersing is also just maximum, can produce bigger moment of torsion when electric motor starting and low-speed running.
When the rotor high-speed rotation, magnet steel 2 is subjected to centrifugal action radially, when the suffered centrifugal force of magnet steel 2 during greater than the elastic force of elastic device 3, elastic device 3 is with compressed, magnet steel 2 can be to the side shifting that elastic device 3 is installed, till the elastic force of elastic device 3 and magnet steel 2 suffered centrifugal force reach a new balance.At this moment, the part that magnet steel 2 embeds NULL 4 can increase, and magnet steel 2 will reduce with the area that the rotor silicon steel sheet directly contacts, thereby the magnetic flux of dispersing also just reduces thereupon, and the rotating speed of rotor is more high, and the amount that reduces is just more many.
The elastic force of the angle of magnet steel 2 and elastic device 3 can calculate setting as required:
As shown in Figure 2, the computing formula of magnet steel 2 centrifugal force: F=m ω 2R, if known speed n, ω=2 π n then, the power of magnet steel 2 elasticity of compression devices 3 is F1=F * cos θ, elastic force after spring is compressed is F`=k * x, wherein K is coefficient of elasticity, and x is the spring reduction length, and F is magnet steel 2 suffered centrifugal force, F1 is that magnet steel 2 suffered centrifugal force are along the component of magnet steel groove direction, F2 be the suffered centrifugal force of magnet steel 2 along the component perpendicular to magnet steel groove direction, F` is produced elastic force after by magnet steel 2 compressions, θ is the angle of magnet steel 2 inclinations, m is the quality of magnet steel 2, angular speed when ω is magnet steel 2 rotations, r is the distance that magnet steel 2 centers of gravity arrive the rotor center of circle, n is the linear velocity of magnet steel 2 rotations.F1 is opposite with the F` direction, after two power equal and opposite in directions, cancels out each other the magnet steel 2 stressed poised states that reach.Can require the size at design θ angle, the length of r according to rotating speed during design, and use the elastic device 3 of corresponding k value, thereby reach accurate control.
At last, it should be noted that above what enumerate only is specific embodiments of the invention.Obviously, the invention is not restricted to above embodiment, a lot of distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate all should be thought protection scope of the present invention.

Claims (6)

1. removable magnet steel interior permanent magnet machines rotor structure, comprise rotor core, it is characterized in that, also comprise magnet steel, elastic device and NULL, rotor core is provided with at least two magnet steel grooves, the direction of magnet steel groove and rotor core radial shape are angled, magnet steel is pressed the N utmost point, the S utmost point alternately is inlaid in each magnet steel groove, magnet steel can move along magnet steel groove direction in the magnet steel groove, elastic device is installed in magnet steel near an end of rotor core cylindrical, magnet steel is equipped with NULL near the end of rotor core cylindrical and the both sides of elastic device, and elastic device and NULL are inlaid in the magnet steel groove.
2. removable magnet steel interior permanent magnet machines rotor structure according to claim 1 is characterized in that described elastic device is spring.
3. removable magnet steel interior permanent magnet machines rotor structure according to claim 1 is characterized in that the iron core that described rotor core forms for the ring-shaped silicon steel sheet closed assembly.
4. removable magnet steel interior permanent magnet machines rotor structure according to claim 3 is characterized in that, described NULL is that magnetic permeability is less than the material of the silicon steel sheet magnetic permeability of rotor core.
5. removable magnet steel interior permanent magnet machines rotor structure according to claim 1 is characterized in that, is evenly distributed with even number magnet steel groove in the described rotor core.
6. removable magnet steel interior permanent magnet machines rotor structure according to claim 5 is characterized in that, described adjacent magnet steel groove is V-arrangement or the non-V-arrangement that relative rotor core radial symmetric distributes.
CN2013101704924A 2013-03-25 2013-05-09 Movable magnetic steel built-in-type permanent magnet motor rotor structure Pending CN103269135A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201310097221 2013-03-25
CN201310097221.0 2013-03-25
CN2013101704924A CN103269135A (en) 2013-03-25 2013-05-09 Movable magnetic steel built-in-type permanent magnet motor rotor structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013101704924A CN103269135A (en) 2013-03-25 2013-05-09 Movable magnetic steel built-in-type permanent magnet motor rotor structure

Publications (1)

Publication Number Publication Date
CN103269135A true CN103269135A (en) 2013-08-28

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Family Applications (1)

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CN2013101704924A Pending CN103269135A (en) 2013-03-25 2013-05-09 Movable magnetic steel built-in-type permanent magnet motor rotor structure

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110380543A (en) * 2019-08-07 2019-10-25 珠海格力节能环保制冷技术研究中心有限公司 A kind of rotor assembly, motor, compressor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07288940A (en) * 1994-04-13 1995-10-31 Meidensha Corp Permanent magnet rotating electric machine
JP2004120829A (en) * 2002-09-24 2004-04-15 Toshiba Corp Permanent magnet synchronous motor
CN1822474A (en) * 2006-03-24 2006-08-23 哈尔滨工业大学 Permanent magnet motor rotor capable of automatic weaking magnet following rotation speed
CN203301268U (en) * 2013-05-09 2013-11-20 杭州德沃仕电动科技有限公司 Magnet steel movable built-in permanent magnet motor rotor structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07288940A (en) * 1994-04-13 1995-10-31 Meidensha Corp Permanent magnet rotating electric machine
JP2004120829A (en) * 2002-09-24 2004-04-15 Toshiba Corp Permanent magnet synchronous motor
CN1822474A (en) * 2006-03-24 2006-08-23 哈尔滨工业大学 Permanent magnet motor rotor capable of automatic weaking magnet following rotation speed
CN203301268U (en) * 2013-05-09 2013-11-20 杭州德沃仕电动科技有限公司 Magnet steel movable built-in permanent magnet motor rotor structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110380543A (en) * 2019-08-07 2019-10-25 珠海格力节能环保制冷技术研究中心有限公司 A kind of rotor assembly, motor, compressor

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Application publication date: 20130828

C12 Rejection of a patent application after its publication