CN202206274U - Coaxial magnetic gear - Google Patents
Coaxial magnetic gear Download PDFInfo
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- CN202206274U CN202206274U CN2011203211970U CN201120321197U CN202206274U CN 202206274 U CN202206274 U CN 202206274U CN 2011203211970 U CN2011203211970 U CN 2011203211970U CN 201120321197 U CN201120321197 U CN 201120321197U CN 202206274 U CN202206274 U CN 202206274U
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- rotor
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Abstract
The utility model discloses a coaxial magnetic gear, comprising an outer rotor, a static magnetic ring and an inner rotor which are arranged from outside to inside and are coaxial, wherein the outer rotor is a ring-shaped magnetizer, and the inner circumference of the outer rotor is provided with outer-rotor salient poles which are arranged at an equal interval; the static magnetic ring is fixedly arranged between the inner rotor and the outer rotor and consists of permanent mangets and non-permanent magnets which are arranged at intervals; the outer-rotor salient poles and the inner-rotor salient poles are arranged on the outer circumference of the inner rotor at an equal interval, and the inner-rotor salient poles are provided with inner-rotor permanent magnets; the inner rotor also can adopt other structures capable of generating effective N-S magnetic poles; and in order to guarantee normal rotation of the inner rotor and the outer rotor, air gaps are left among the outer rotor, the static magnetic ring and the inner rotor. In the coaxial magnetic gear, the structure of the outer-rotor salient poles is utilized to adjust the magnetic field of the static magnetic ring into a series of harmonic rotating magnetic field at the inner air gap side, the pole pairs of the selected inner-rotor permanent magnets are same as those of a certain needed harmonic magnetic field, and stable torque transferring is realized by the coupling action of the inner-rotor permanent magnets and the harmonic magnetic field. The magnetic gear has the characteristics of high torque density, large mechanical strength of the outer rotor and convenient processing and manufacture.
Description
Technical field
The utility model belongs to dynamo-electric field, relates to a kind of coaxial magnetic gear that is applicable to contactless variable speed drives occasion.
Background technology
In the commercial Application, much need the occasion of variable speed drives, utilize bulky mechanical devices such as gear box to realize usually.The use of a large amount of mechanical devices will bring problems such as noise, vibrations, frictional dissipation and periodic maintenance inevitably, and will obviously increase complexity, the volume and weight of system.In addition, mechanical gear does not possess overload self-shield ability, when torque transmitted surpasses its gear ability to bear, security incident takes place easily.
Compare, the magnetic gear is a kind of contactless transmission device, does not have noise, vibrations, frictional dissipation and problem such as lubricated, and the physical isolation between can realizing importing and exporting, and also possesses overload self-shield ability, and security reliability is higher.Torque transfer capability is the important performance indexes of magnetic gear always, and for a long time, the restriction of permanent magnetic material performance and magnetic circuit topological structure causes the torque density of magnetic gear relatively low.In recent years, along with the appearance of high-performance Ne-Fe-B permanent-magnet material, in order to realize the breakthrough of magnetic gear torque transmission capacity, the exploration of the relevant novel magnetic circuit topological structure of magnetic gear becomes the research focus of Chinese scholars once more.At present; Traditional coaxial magnetic gear comprises external rotor, adjustable magnetic ring and the internal rotor of arrangement, concentric from outside to inside; Inside and outside rotor all adopts the Surface Mount magnet structure, has not only reduced the mechanical resistance properties of rotor, and the permanent magnet of Surface Mount comes off when rotor rotates easily.Simultaneously, the adjustable magnetic ring adopts magnetic inductive block and non-magnetic inductive block to be spaced formation, owing between adjustable magnetic ring and the inside and outside rotor two layers of air gap are arranged, causes the torque density of magnetic gear lower, and various reasons has all limited the application of traditional coaxial magnetic gear.Therefore, the novel magnetic gear topological structure of research high torque (HT) transmission capacity has important significance for theories and practical construction value.
The utility model content
Technical problem:The utility model provides a kind of have higher torque density and external rotor mechanical strength, the coaxial magnetic gear of convenient processing and manufacture to the deficiency of traditional magnetic gear magnetic circuit topological structure.
Technical scheme:The coaxial magnetic gear of the utility model comprises arrangement, the external rotor of concentric, static magnet ring, internal rotor and rotating shaft from outside to inside; Said external rotor is an annular magnetizer, and ring is provided with the external rotor salient pole that equidistance is arranged within it; The annular element that the magnet ring permanent magnet that said static magnet ring is arranged by equi-spaced apart is formed is provided with non-magnetic inductive block between the two adjacent magnet ring permanent magnets, said magnet ring permanent magnet radial magnetizing, and the adjacent permanent magnet magnetizing direction is opposite; Said internal rotor is fixedly installed in the rotating shaft, and the outer shroud of internal rotor is provided with the internal rotor permanent-magnetic body that equi-spaced apart is arranged; Be provided with outer air gap between said external rotor salient pole and the static magnet ring; Be provided with interior air gap between static magnet ring and the internal rotor permanent-magnetic body.
In the utility model, relation below the number of pole-pairs of the number of said external rotor salient pole, magnet ring permanent magnet, internal rotor permanent-magnetic body number of pole-pairs satisfy:
p Pms =n o ±
p Pmi , wherein,
n o Be external rotor salient pole number,
p Pms Be static magnet ring permanent magnet pole logarithm,
p Pmi Be magnetic gear internal rotor permanent-magnetic body number of pole-pairs.
In the utility model, the outer shroud of said internal rotor is provided with the internal rotor salient pole that equidistance is arranged, and said internal rotor permanent-magnetic body is arranged on internal rotor salient pole surface.
In the another kind of technical scheme of the utility model, the magnetic gear comprises arrangement, the external rotor of concentric, static magnet ring, internal rotor and rotating shaft from outside to inside; Said external rotor is an annular magnetizer, and ring is provided with the external rotor salient pole that equidistance is arranged within it; The annular element that the magnet ring permanent magnet that said static magnet ring is arranged by equi-spaced apart is formed is provided with magnetic inductive block between the two adjacent magnet ring permanent magnets, and said magnet ring permanent magnet is along the circumference cutting orientation magnetizing, and the adjacent permanent magnet magnetizing direction is opposite; Said internal rotor is fixedly installed in the rotating shaft, and the outer shroud of internal rotor is provided with the internal rotor permanent-magnetic body that equi-spaced apart is arranged; Be provided with outer air gap between said external rotor salient pole and the static magnet ring; Be provided with interior air gap between static magnet ring and the internal rotor permanent-magnetic body.
In this scheme, relation below the number of pole-pairs of the number of said external rotor salient pole, magnet ring permanent magnet, internal rotor permanent-magnetic body number of pole-pairs satisfy:
p Pms =n o ±
p Pmi , wherein,
n o Be external rotor salient pole number,
p Pms Be static magnet ring permanent magnet pole logarithm,
p Pmi Be magnetic gear internal rotor permanent-magnetic body number of pole-pairs.
In this scheme, the outer shroud of said internal rotor is provided with the internal rotor salient pole that equidistance is arranged, and said internal rotor permanent-magnetic body is arranged on internal rotor salient pole surface.
Beneficial effect:The utility model provides a kind of brand-new coaxial magnetic gear structure, compares with existing coaxial magnetic gear, has the following advantages:
1. the external rotor of the utility model is simple salient-pole structure; Its effect is that the magnetic field with static magnet ring modulates and the consistent rotating magnetic field of magnetic gear internal rotor permanent-magnetic body number of pole-pairs in interior air gap side; This rotating magnetic field and internal rotor permanent-magnetic magnetic field intercouple, and can realize stable transmission of torque.This magnetic gear has that torque density height, external rotor mechanical strength are big, the characteristics of convenient processing and manufacture.
Compare with traditional coaxial magnetic gear, external rotor is merely simple salient-pole structure in the utility model, not only can improve the mechanical resistance properties of external rotor, and is easier to processing and manufacturing, helps reducing production costs;
2. in the external rotor of the utility model when rotation,, the magnetic field that static magnet ring produces under the modulating action of rotor with salient pole structure, can produce a series of harmonic wave rotating magnetic field in interior air gap side outside.When internal rotor permanent-magnetic magnetic field is consistent with a certain harmonic wave rotating magnetic field number of pole-pairs, can realize effective transmission of torque through the magnetic field coupling.In order to obtain higher torque density, the harmonic field of selecting for use should be maximum one of amplitude in many harmonic fields.In addition, the fundamental wave magnetic field that magnet ring produces still remains static, and helps reducing the magnetic hysteresis loss in the static magnet ring;
3. number, the number of pole-pairs of magnet ring permanent magnet, the internal rotor permanent-magnetic body number of pole-pairs when the external rotor salient pole concerns below satisfying:
p Pms =n o ±
p Pmi , wherein,
n o Be external rotor salient pole number,
p Pms Be static magnet ring permanent magnet pole logarithm,
p Pmi Be magnetic gear internal rotor permanent-magnetic body number of pole-pairs, utilized the maximum harmonic component of amplitude in the harmonic field this moment, the magnetic gear can obtain optimum torque transfer capability;
4. in the magnet ring permanent magnet radial magnetizing scheme of the utility model, place the non-magnetic inductive block between the static magnet ring adjacent permanent magnet, can play the effect of fixed permanent magnet on the one hand, can also effectively reduce the permanent magnet interelectrode magnetic leakage on the other hand;
5. the magnet ring permanent magnet of the utility model is along in the circumference cutting orientation magnetizing scheme; Constitute the magnetic inductive block of static magnet ring; Can provide flux paths to form the N-S utmost point of equivalence on the one hand for permanent magnet, can also play the effect of fixed permanent magnet on the other hand along the circumference cutting orientation magnetizing;
6. the utility model utilization becomes the internal rotor that the magnetic resistance principle adopts salient pole Surface Mount magnet structure, compares with the internal rotor of other version, under the prerequisite that guarantees torque transfer capability, can further save the consumption of magnet steel and iron;
Description of drawings
Fig. 1 adopts the coaxial magnetic gear cross section structure of radial magnetizing for magnet ring;
Fig. 2 adopts the coaxial magnetic gear cross section structure of cutting orientation magnetizing for magnet ring;
Fig. 3 is a surface mount permanent magnet type internal rotor cross section structure;
Fig. 4 is embedded permanent magnet type internal rotor cross section structure;
Fig. 5 is traditional coaxial magnetic gear cross section structure.
Have among the figure: external rotor 1, external rotor salient pole 11, external rotor permanent magnet body 12, static magnet ring 2; Magnet ring permanent magnet 21, non-magnetic inductive block 22, magnetic inductive block 23, internal rotor 3; Internal rotor salient pole 31, internal rotor permanent-magnetic body 32, outer air gap 4, interior air gap 5; Rotating shaft 6, adjustable magnetic ring 7, adjustable magnetic ring magnetic inductive block 71, the non-magnetic inductive block 72 of adjustable magnetic ring.Arrow is represented the permanent magnet magnetizing direction among the figure.
Embodiment
The coaxial magnetic gear of the utility model comprises external rotor 1, static magnet ring 2, internal rotor 3 and the rotating shaft 6 of arrangement, concentric from outside to inside; Said external rotor 1 is an annular magnetizer, and ring is provided with the external rotor salient pole 11 that equidistance is arranged within it; The annular element that the magnet ring permanent magnet 21 that said static magnet ring 2 is arranged by equi-spaced apart is formed is provided with non-magnetic inductive block 22 between the two adjacent magnet ring permanent magnets 21, said magnet ring permanent magnet 21 radial magnetizings, and the adjacent permanent magnet magnetizing direction is opposite; Said internal rotor 3 is fixedly installed in the rotating shaft 6, and the outer shroud of internal rotor is provided with the internal rotor permanent-magnetic body 32 that equi-spaced apart is arranged; Be provided with outer air gap 4 between said external rotor salient pole 11 and the static magnet ring 2; Air gap 5 in being provided with between static magnet ring 2 and the internal rotor permanent-magnetic body 32.
In the utility model, relation below the number of pole-pairs of the number of said external rotor salient pole 11, magnet ring permanent magnet 21, internal rotor permanent-magnetic body 32 numbers of pole-pairs satisfy:
p Pms =n o ±
p Pmi , wherein,
n o Be external rotor salient pole number,
p Pms Be static magnet ring permanent magnet pole logarithm,
p Pmi Be magnetic gear internal rotor permanent-magnetic body number of pole-pairs.
In the utility model, the outer shroud of said internal rotor 3 is provided with the internal rotor salient pole 31 that equidistance is arranged, and said internal rotor permanent-magnetic body 32 is arranged on internal rotor salient pole 31 surfaces.
In the another kind of technical scheme of the utility model, the magnetic gear comprises external rotor 1, static magnet ring 2, internal rotor 3 and the rotating shaft 6 of arrangement, concentric from outside to inside; Said external rotor 1 is an annular magnetizer, and ring is provided with the external rotor salient pole 11 that equidistance is arranged within it; The annular element that the magnet ring permanent magnet 21 that said static magnet ring 2 is arranged by equi-spaced apart is formed is provided with magnetic inductive block 23 between the two adjacent magnet ring permanent magnets 21, and said magnet ring permanent magnet 21 is along the circumference cutting orientation magnetizing, and the adjacent permanent magnet magnetizing direction is opposite; Said internal rotor 3 is fixedly installed in the rotating shaft 6, and the outer shroud of internal rotor 3 is provided with the internal rotor permanent-magnetic body 32 that equi-spaced apart is arranged; Be provided with outer air gap 4 between said external rotor salient pole 11 and the static magnet ring 2; Air gap 5 in being provided with between static magnet ring 2 and the internal rotor permanent-magnetic body 32.
In this scheme, relation below the number of pole-pairs of the number of said external rotor salient pole 11, magnet ring permanent magnet 21, internal rotor permanent-magnetic body 32 numbers of pole-pairs satisfy:
p Pms =n o ±
p Pmi , wherein,
n o Be external rotor salient pole number,
p Pms Be static magnet ring permanent magnet pole logarithm,
p Pmi Be magnetic gear internal rotor permanent-magnetic body number of pole-pairs.
In this scheme, the outer shroud of said internal rotor 3 is provided with the internal rotor salient pole 31 that equidistance is arranged, and said internal rotor permanent-magnetic body 32 is arranged on internal rotor salient pole 31 surfaces.
Below in conjunction with accompanying drawing the utility model is further specified.
The external rotor 1 of the utility model is required to be salient-pole structure, and in order to the magnetic field that the modulation magnet ring produces, in order to obtain higher torque transfer capability, in the practical application, the salient pole pole embrace needs optimal design, generally is selected in about 0.5 and is advisable.
Described external rotor 1, internal rotor 3, magnet ring permanent magnet are made up of silicon steel laminations or other permeability magnetic material along the magnetic inductive block 23 that constitutes static magnet ring in the circumference cutting orientation magnetizing scheme, and be identical with the rotor core manufacturing process of common permagnetic synchronous motor.
In the described magnet ring permanent magnet radial magnetizing scheme; Place the non-magnetic inductive block 22 between the static magnet ring permanent magnet 21 to constitute by epoxy resin or other non-magnet material; Be spaced the static magnet ring of formation with permanent magnet 21 successively along circumference, be fixedly mounted between the inside and outside rotor.In order to obtain higher torque transfer capability, non-magnetic inductive block 22 is compared with permanent magnet 21, and proportion is relatively very little, as long as in the scope that manufacturing process allows, play the effect of fixed permanent magnet.
Described magnet ring permanent magnet is along in the circumference cutting orientation magnetizing scheme; Static magnet ring permanent magnet 21 is composed in turn to form an integral body with magnetic inductive block 23 along circumference; Be fixedly mounted between the inside and outside rotor; In order to obtain higher torque density and saving permanent magnet consumption, the arc length proportional control of permanent magnet 21 and magnetic inductive block 23 is advisable about 1:1.
Internal rotor change magnetic resistance capable of using principle adopts salient pole Surface Mount magnet structure, and when adopting this structure, pole embrace should be selected in about 0.7, compares with Surface Mount magnet structure shown in Figure 3, has improved the utilance of unit volume permanent magnet, has reduced production cost.In order to prevent that permanent magnet 32 from coming off under the situation of internal rotor high speed rotating, can between adjacent internal rotor salient pole 31 and permanent magnet 32, fill non-magnet material.Certainly, can also adopt the fixed form of common common permagnetic synchronous motor rotor Surface Mount permanent magnet to realize preventing the purpose that permanent magnet comes off.
In the utility model, internal rotor also can adopt the rotor structure of Fig. 3, other form shown in Figure 4, only needs to guarantee that an internal rotor can produce the effective N-S utmost point and get final product.Wherein, shown in Figure 3 is internal rotor outer shroud equidistance Surface Mount magnet structure, the adjacent permanent magnet radial magnetizing, and magnetizing direction is opposite, constitutes the N-S structure; Shown in Figure 4 is the embedded magnet structure of equidistance, and adjacent permanent magnet is along the circumference cutting orientation magnetizing, and magnetizing direction is opposite, constitutes magneticfocusing N-S structure.Outer air gap 4 between external rotor 1 and static magnet ring 2 can guarantee that external rotor normally rotates; Interior air gap 5 between static magnet ring 2 and internal rotor 3 can guarantee that internal rotor normally rotates.
In the utility model, rotating shaft 6 is connected with outside power input device or PTO, plays the effect that inputs or outputs power.Therefore, rotating shaft 6 can be the parts independent with internal rotor 3, and internal rotor 3 is fixedly installed on rotating shaft 6 excircles; Certainly rotating shaft 6 also can be parts of processing one with internal rotor 3, and even rotating shaft 6 can structurally be regarded as the part that is positioned at the axle center of internal rotor 3.But no matter adopt which kind of version, all within the protection range of the utility model.
The permanent magnet 21 of the static magnet ring of described formation, place the permanent magnets 32 on internal rotor salient pole 31 surface to process by rare-earth Nd-Fe-B or other permanent magnetic material.
In the said magnet ring permanent magnet radial magnetizing scheme, constitute permanent magnet 21 radial magnetizings of static magnet ring, and the adjacent permanent magnet magnetizing direction is opposite, constitutes the N-S structure.
Said magnet ring permanent magnet is along in the circumference cutting orientation magnetizing scheme, and the permanent magnet 21 that constitutes static magnet ring is along the circumference cutting orientation magnetizing, and the adjacent permanent magnet magnetizing direction is opposite, constitutes magneticfocusing N-S structure.
Described permanent magnet 32 radial magnetizings that place internal rotor salient pole surface, and the adjacent permanent magnet magnetizing direction is opposite, constitutes the N-S structure.
The magnetic field modulation function of external rotor salient pole can modulate a series of space harmonicses magnetic field in interior air gap side with the magnetic field of static magnet ring permanent magnet generation.When external rotor rotated, corresponding harmonic field rotated thereupon.When magnetic gear internal rotor permanent-magnetic body number of pole-pairs equaled the number of pole-pairs of wherein any rotation harmonic field, magnetic gear internal rotor just can be stablized rotation through the coupling in magnetic field, realized transmission of torque.So internal rotor has multiple version, only need guarantee to produce effective N-S magnetic pole and the harmonic field coupling gets final product.In order to realize the effect of speed change transmission, the number of pole-pairs of the harmonic wave rotating magnetic field that general requirement is selected for use can not equal the number of external rotor salient pole.Simultaneously, consider that the radius of inside and outside rotor is different, internal rotor outer shroud girth is less; Set permanent magnet pole logarithm is unsuitable too many; So in order to realize transmission of torque effect preferably, the permanent magnet pole logarithm of general internal rotor is compared many that external rotor salient pole number will lack; Be that internal rotor is done high speed rotor, external rotor is done the low speed rotor.At this moment, when the number of pole-pairs of the harmonic field of being selected for use equals the absolute value of difference of permanent magnet pole logarithm and external rotor salient pole number of static magnet ring, utilized the maximum harmonic wave rotating magnetic field of amplitude, the magnetic gear can be realized optimum torque transfer capability.Be that magnetic gear external rotor salient pole number, static magnet ring permanent magnet pole logarithm, internal rotor permanent-magnetic body number of pole-pairs should satisfy following relation:
p pms =n o ±
p pmi （1）
n o , p Pms , p Pmi Be respectively external rotor salient pole number, static magnet ring permanent magnet pole logarithm, magnetic gear internal rotor permanent-magnetic body number of pole-pairs.When
p Pms =n o +
p Pmi The time, the inside and outside rotary speed of rotator of magnetic gear is than satisfying:
Ω
i /Ω
o =－
n o /
p pmi （2）
Ω
i , Ω
o Be respectively the inside and outside rotary speed of rotator of magnetic gear, negative sign representes that the inside and outside rotor direction of rotation of magnetic gear is opposite.When
p Pms =n o -
p Pmi The time, the inside and outside rotary speed of rotator of magnetic gear is than satisfying:
Ω
i /Ω
o =
n o /
p pmi （3）
At this moment, the direction of rotation of the inside and outside rotor of magnetic gear is identical.
The magnet ring permanent magnet is compared with magnet ring permanent magnet radial magnetizing scheme along circumference cutting orientation magnetizing scheme, because static magnet ring permanent magnet adopts the magneticfocusing structure, can further improve the torque transfer capability of magnetic gear.In addition, under the condition that satisfies (1) formula,, selected for use in order to reduce the internal rotor torque pulsation
p Pms ,
p Pmi Least common multiple between the value should be big as far as possible, simultaneously, satisfying under the needs of rotating ratio,
n o ,
p Pms ,
p Pmi Value can not be selected for use excessive, in order to avoid increase the difficulty of processing and manufacturing, can not select for use too small, in order to avoid influence the magnetic field modulation effect, the torque density of reduction magnetic gear.The novel coaxial magnetic gear that the utility model relates to not only torque density is high, and outer-rotor structure is simple, has remarkable advantages aspect processing and fabricating cost and the mechanical resistance properties.
Claims (6)
1. a coaxial magnetic gear is characterized in that, this magnetic gear comprises arrangement, the external rotor (1) of concentric, static magnet ring (2), internal rotor (3) and rotating shaft (6) from outside to inside;
Said external rotor (1) is an annular magnetizer, and ring is provided with the external rotor salient pole (11) that equidistance is arranged within it;
The annular element that the magnet ring permanent magnet (21) that said static magnet ring (2) is arranged by equi-spaced apart is formed; Be provided with non-magnetic inductive block (22) between the two adjacent magnet ring permanent magnets (21); Said magnet ring permanent magnet (21) radial magnetizing, the adjacent permanent magnet magnetizing direction is opposite;
Said internal rotor (3) is fixedly installed in the rotating shaft (6), and the outer shroud of internal rotor (3) is provided with the internal rotor permanent-magnetic body (32) that equi-spaced apart is arranged;
Be provided with outer air gap (4) between said external rotor salient pole (11) and the static magnet ring (2); Be provided with interior air gap (5) between static magnet ring (2) and the internal rotor permanent-magnetic body (32).
2. a kind of coaxial magnetic gear according to claim 1 is characterized in that, relation below the number of pole-pairs of the number of said external rotor salient pole (11), magnet ring permanent magnet (21), the number of pole-pairs of internal rotor permanent-magnetic body (32) satisfy:
p Pms =n o ±
p Pmi ,
Wherein,
n o Be external rotor salient pole number,
p Pms Be static magnet ring permanent magnet pole logarithm,
p Pmi Be magnetic gear internal rotor permanent-magnetic body number of pole-pairs.
3. a kind of coaxial magnetic gear according to claim 1 is characterized in that, the outer shroud of said internal rotor (3) is provided with the internal rotor salient pole (31) that equidistance is arranged, and said internal rotor permanent-magnetic body (32) is arranged on internal rotor salient pole (31) surface.
4. a coaxial magnetic gear is characterized in that, this magnetic gear comprises arrangement, the external rotor (1) of concentric, static magnet ring (2), internal rotor (3) and rotating shaft (6) from outside to inside;
Said external rotor (1) is an annular magnetizer, and ring is provided with the external rotor salient pole (11) that equidistance is arranged within it;
The annular element that the magnet ring permanent magnet (21) that said static magnet ring (2) is arranged by equi-spaced apart is formed; Be provided with magnetic inductive block (23) between the two adjacent magnet ring permanent magnets (21); Said magnet ring permanent magnet (21) is along the circumference cutting orientation magnetizing, and the adjacent permanent magnet magnetizing direction is opposite;
Said internal rotor (3) is fixedly installed in the rotating shaft (6), and the outer shroud of internal rotor (3) is provided with the internal rotor permanent-magnetic body (32) that equi-spaced apart is arranged;
Be provided with outer air gap (4) between said external rotor salient pole (11) and the static magnet ring (2); Be provided with interior air gap (5) between static magnet ring (2) and the internal rotor permanent-magnetic body (32).
5. a kind of coaxial magnetic gear according to claim 4 is characterized in that, relation below the number of pole-pairs of the number of said external rotor salient pole (11), magnet ring permanent magnet (21), the number of pole-pairs of internal rotor permanent-magnetic body (32) satisfy:
p Pms =n o ±
p Pmi ,
Wherein,
n o Be external rotor salient pole number,
p Pms Be static magnet ring permanent magnet pole logarithm,
p Pmi Be magnetic gear internal rotor permanent-magnetic body number of pole-pairs.
6. a kind of coaxial magnetic gear according to claim 4 is characterized in that, the outer shroud of said internal rotor (3) is provided with the internal rotor salient pole (31) that equidistance is arranged, and said internal rotor permanent-magnetic body (32) is arranged on internal rotor salient pole (31) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203211970U CN202206274U (en) | 2011-08-30 | 2011-08-30 | Coaxial magnetic gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203211970U CN202206274U (en) | 2011-08-30 | 2011-08-30 | Coaxial magnetic gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202206274U true CN202206274U (en) | 2012-04-25 |
Family
ID=45970370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203211970U Withdrawn - After Issue CN202206274U (en) | 2011-08-30 | 2011-08-30 | Coaxial magnetic gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202206274U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324821A (en) * | 2011-08-30 | 2012-01-18 | 东南大学 | Coaxial magnetic gear |
| CN104158362A (en) * | 2014-09-05 | 2014-11-19 | 东南大学 | Non-coaxial disc-type magnetic gear |
| CN106712452A (en) * | 2017-01-24 | 2017-05-24 | 东南大学 | Dual permanent magnet built-in magnetism gathering type magnetic gear |
| CN113949246A (en) * | 2021-09-30 | 2022-01-18 | 国家电投集团科学技术研究院有限公司 | Magnetic gear of axial magnetic flux |
| CN114364294A (en) * | 2019-07-25 | 2022-04-15 | 尚科宁家运营有限公司 | Suction motor assembly with magnetic transmission |
-
2011
- 2011-08-30 CN CN2011203211970U patent/CN202206274U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324821A (en) * | 2011-08-30 | 2012-01-18 | 东南大学 | Coaxial magnetic gear |
| CN102324821B (en) * | 2011-08-30 | 2013-10-09 | 东南大学 | Coaxial magnetic gear |
| CN104158362A (en) * | 2014-09-05 | 2014-11-19 | 东南大学 | Non-coaxial disc-type magnetic gear |
| CN104158362B (en) * | 2014-09-05 | 2016-08-24 | 东南大学 | A kind of out-of-alignment disc magnetic gear |
| CN106712452A (en) * | 2017-01-24 | 2017-05-24 | 东南大学 | Dual permanent magnet built-in magnetism gathering type magnetic gear |
| CN114364294A (en) * | 2019-07-25 | 2022-04-15 | 尚科宁家运营有限公司 | Suction motor assembly with magnetic transmission |
| CN114364294B (en) * | 2019-07-25 | 2023-07-18 | 尚科宁家运营有限公司 | Suction motor assembly with magnetic transmission device |
| CN113949246A (en) * | 2021-09-30 | 2022-01-18 | 国家电投集团科学技术研究院有限公司 | Magnetic gear of axial magnetic flux |
| CN113949246B (en) * | 2021-09-30 | 2023-03-31 | 国家电投集团科学技术研究院有限公司 | Magnetic gear of axial magnetic flux |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120425 Effective date of abandoning: 20131009 |
|
| RGAV | Abandon patent right to avoid regrant |