CN1155177A - Magnetic sleeve type electric motor with reinforcing structure - Google Patents
Magnetic sleeve type electric motor with reinforcing structure Download PDFInfo
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- CN1155177A CN1155177A CN 96118017 CN96118017A CN1155177A CN 1155177 A CN1155177 A CN 1155177A CN 96118017 CN96118017 CN 96118017 CN 96118017 A CN96118017 A CN 96118017A CN 1155177 A CN1155177 A CN 1155177A
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- magnetic sleeve
- tooth
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Abstract
The present invention relates to a closed slot electric machine which is characterized by that the iron core of said electric machine is made up in the form of open slot, after the slot is inserted, a magnetic sleeve is mounted, then the open slot is closed, and made into closed slot. The magnetic sleeve is made of ferromagnetic or ferrimagnetic material. This ferromagnetic or ferrimagnetic material (for example silicon sheet) is made into the form of thin wall ring with teeth, and the magnetic sleeve is formed of a group of thinw all rings which are insulated each from other, the thickness of the magnetic ring is 0.1-5 MM, and its width is 0.3-20 MM, so that said invented electric machine can be obtained.
Description
The invention belongs to the invention of electric machine structure and manufacture view, is a kind of groove motor of remaining silent.
In the design of electric machine structure, exist a pair of contradiction: from rule angle easily, need notch good greatly a bit, from effective air gap that reduces stator and rotor and the angle that reduces magnetic harmonic loss, need notch littler good, present magnetic slot-seal can reduce effective air gap and reduce magnetic harmonic loss, raises the efficiency, but its between cog leakage field is bigger, reduced torque, and the slot wedge bottom surface dare not flat crest top land, and effect is restricted.
The present invention adopts the motor of magnetic sleeve-type structure, makes the open slot motor add that the magnetic sleeve rear motor becomes the groove motor of remaining silent.Can realize following purpose: 1, can make the motor of polytype, specification all make the open slot rule, the groove of remaining silent assembling, insulation is all improved and not reduce its performance; 2, reduce the effective air gap of stator and rotor and reduce magnetic harmonic loss, its effect is not second to semi-enclosed slot, and making originally is that the motor performance of open slot improves.
Feature of the present invention is that electric machine iron core is made open slot, and embedded line refills magnetic sleeve later on, open slot is sealed become to remain silent groove.Magnetic sleeve is made by ferromagnetism or ferrimagnetic material, and for stator, it is long that the girth of magnetic sleeve annulus equals the stator inner periphery, it be nested closely, be bonded in the stator internal circular surfaces, Fig. 1 is a stator section, the 1st, magnetic sleeve, the 2nd, stator core; For rotor, it is to bind round cover closely, be bonded at rotor outer surface, among Fig. 2, and the 3rd, magnetic sleeve, the 4th, rotor core, magnetic sleeve are not necessarily circular.The temperature resistant grade of the bonding agent of bonding magnetic sleeve and stator and rotor iron core will be complementary with motor, and simultaneously, bonding agent has also risen between the ring that makes magnetic sleeve and the ring and the insulating effect between the ring and the iron core flank of tooth.From the angle of motor performance, magnetic sleeve should be that eddy current is little and the between cog leakage field is little.Fig. 3 is made up of the thin wall circular that one group of ferrimagnet (as silicon steel sheet) is made, mutual insulating between these thin-walled rings, and the width K of each ring can not be too wide, and too wide then eddy current is too big, but too narrow then manufacturability is poor; Thickness D can not be too thick, too thickly causes that then the between cog leakage field is excessive, can produce adverse effects such as torque reduction.Different according to motor type and specification, thickness is between 0.1-5MM, and width will be according to the experiment specified data between 0.3-20.After the embedded line circle, these ferromagnetic annulus are inserted in iron core, motor is with regard to the magnetic sleeve-type that has become Fig. 1, Fig. 2 shape groove motor of remaining silent.Owing to the reliability that will emphasize to assemble, use, so produced the magnetic sleeve-type motor of band reinforcement again, because these factors, the structure of magnetic sleeve, proterties, size just have many features.
Several basic structures of magnetic sleeve are as follows:
1, a kind of structure is the most intuitively described earlier, Fig. 3 is made up of the thin wall circular that one group of ferrimagnet (as silicon steel sheet) is made, these thin-walled rings are sheared, are welded by silicon steel sheet, so thickness is exactly the thickness (0.35 or 0.5MM) of silicon steel sheet, for middle and small motor, it is following for well that width K is controlled at 10mm, it is more reasonable that ring width is not more than the iron core facewidth of stator, in order to avoid the eddy current of anchor ring is too big, certainly, if emphasize technological words, wideer also passable, just its eddy current loss is bigger than normal.，
2, make the material of a spiral shape in advance with ferrimagnet, its cross section can be rectangle or circle, and it is rectangular for example with roller shear the reel silicon steel sheet to be cut into the narrow silicon steel sheet of many volumes, claims magnetic line.Treat that the iron core flank of tooth and magnetic line coat after the glue, this magnetic line is close to and is bonded in the coiling of iron core teeth surface and be spring-like (Fig. 4).
3, because a lot of motors that are worth costliness are paid much attention to reliability, single magnetic sleeves of forming with some simple rings safety inadequately that just seems, so proposed the magnetic sleeve-type motor of band reinforcement, the magnetic sleeve of this motor and electric machine iron core all have some variations, the stator magnetic sleeve two sideband teeth of band reinforcement, concrete structure following (Fig. 5): rectangular (facewidth T1 is less than iron core facewidth T2) that at first the silicon steel sheet punching is become two sideband tooth A, then with 90 ° of flank of tooth bendings, rectangular vertical of the flank of tooth A that makes Fig. 5 shape with rectangular B, be welded into band tooth annulus again, the band tooth magnetic sleeve of composition diagram 6 shapes, tooth on the ring (being called for short the ring tooth later on) is corresponding to the tooth of stator core, ring tooth A inserts in the middle of the lamination of stator iron core tooth, certainly, will correspondingly reserve many small gap corresponding to the position of ring tooth in the electric machine iron core tooth, the ring tooth just is inserted in and is bonded in these small gap.The manufacturing of the iron core of the stator of this structure can be adopted following method: the width of establishing the every ring of magnetic sleeve is K, the ring tooth depth is G, the interior radius of circle of stator punching is R, radius of circle is the punching of R+G in some so again, when core lamination stack, every just folded two punchings that interior radius of circle is R+G of the thickness of K, so just having formed some degree of depth every thickness K in iron core teeth is G, stitching wide is two slits that silicon steel sheet is wide, make each ring tooth A that corresponding slit all be arranged, right part among Figure 11 is the schematic diagram that tooth A inserts iron core, and P is that interior radius of circle is the iron core of R+G.Motor is loaded onto after the reinforced magnetic sleeve, and is the same with common circular ring type magnetic sleeve from appearance, but in fact because the ring tooth and the iron core teeth of reinforced magnetic sleeve have been formed one, so the possibility that ring falls down reduces greatly.Reliability increases.
4, for rotor, the band ring gear can't bind round and sets up, and can be locked after on the rotor with the winding method or with the band tooth of Fig. 5 is rectangular, again with joint weld.Certainly, the needs of reserving gaps as gear shaping are also wanted in corresponding position on the iron core.
5, magnetic sleeve also can be made Fig. 7 drum by the soft magnetic material of monoblock, this material requirements resistivity height, and relatively good with regard to present employing ferrite, high sial steel or ultra high silicon aluminum steel, also available iron Magnaglo and adhesive glue are made.
6, the eddy current of the metal made of one piece magnetic sleeve of Fig. 7 is very big, open some seams and can reduce eddy current, Fig. 8 severs some slits 6 vertically on the matrix of made of one piece magnetic sleeve, Fig. 9 is circumferential some slits 7 of severing in the matrix upper edge of made of one piece magnetic core sleeve, and the injection resin glue is used for remedying intensity and reinforced insulation, the alternate manner of slot distribution shape is to imagine easily, can not be exhaustive.If the circumferential slot 7 among Fig. 9 cut a full circle, then Fig. 9 has become the magnetic sleeve that one group of the same short magnetic rings with Fig. 3 is formed.
7, woven magnetic sleeve is very useful for the big motor of batch, Figure 10 is a woven magnetic cover, at position 11 corresponding to notch, with some nonmetallic silk threads one group of single magnetic annulus is woven into a complete magnetic sleeve, the 11st, the part that is woven also is the part corresponding to notch.Whole magnetic sleeve is bonded on the iron core.
8, ring tooth and iron core teeth can be that the ring tooth is many not necessarily just one to one, also can be that iron core teeth is many, also can be that to encircle the tooth both sides asymmetric or the like, and its variation is too numerous to enumerate.Also can be ring facewidth T1 less than half the half-breadth tooth of iron core facewidth T2, stator core radius of circle in the just folded a slice of the thickness of K is the punching of R+G, so just having formed some degree of depth every thickness K in iron core teeth is G, stitching wide is the wide slit of a slice silicon steel sheet, makes each ring tooth that corresponding slit all be arranged.The half-breadth tooth of adjacent two rings is not to paste mutually side by side, and in the common insertion iron core slot, the left part among Figure 11 is the schematic diagram that half-breadth tooth E, F insert iron core but front and back interlace, and P is that interior radius of circle is the iron core of R+G.
Claims (9)
1, feature of the present invention is that electric machine iron core is made open slot, and embedded line refills magnetic sleeve later on, open slot is sealed become to remain silent groove.Magnetic sleeve is made by ferromagnetism or ferrimagnetic material, and for stator, it is long that the girth of magnetic sleeve annulus equals the stator inner periphery, it be nested closely, be bonded in the stator internal circular surfaces, Fig. 1 is a stator section, the 1st, magnetic sleeve, the 2nd, stator core; For rotor, it is to bind round cover closely, be bonded at rotor outer surface, among Fig. 2, and the 3rd, magnetic sleeve, the 4th, rotor core, magnetic sleeve are not necessarily circular.The temperature resistant grade of the bonding agent of bonding magnetic sleeve and stator and rotor iron core will be complementary with motor, and simultaneously, bonding agent has also risen between the ring that makes magnetic sleeve and the ring and the insulating effect between the ring and the iron core flank of tooth.From the angle of motor performance, magnetic sleeve should be that eddy current is little and the between cog leakage field is little.Fig. 3 is made up of the thin wall circular that one group of ferrimagnet (as silicon steel sheet) is made, mutual insulating between these thin-walled rings, and the width K of each ring can not be too wide, and too wide then eddy current is too big, but too narrow then manufacturability is poor; Thickness D can not be too thick, too thickly causes that then the between cog leakage field is excessive, can produce adverse effects such as torque reduction.Different according to motor type and specification, thickness is between 0.1-5MM, and width will be according to the experiment specified data between 0.3-20.After the embedded line circle, these ferromagnetic annulus are inserted in iron core, motor is with regard to the magnetic sleeve-type that has become Fig. 1, Fig. 2 shape groove motor of remaining silent.Owing to the reliability that will emphasize to assemble, use, so produced the magnetic sleeve-type motor of band reinforcement again, because these factors, the structure of magnetic sleeve, proterties, size just have many features.
2, electric machine structure according to claim 1, its further feature is the structure of magnetic sleeve, Fig. 3 is made up of the thin wall circular that one group of ferrimagnet (as silicon steel sheet) is made, these thin-walled rings are sheared by silicon steel sheet, be welded, so thickness is exactly the thickness (0.35 or 0.5MM) of silicon steel sheet, for middle and small motor, it is following for well that width K is controlled at 10mm, it is more reasonable that ring width is not more than the iron core facewidth of stator, in order to avoid the eddy current of anchor ring is too big, certainly, if emphasize technological words, wideer also passable, just its eddy current loss is bigger than normal.，
3, electric machine structure according to claim 1, its further feature is the structure of magnetic sleeve, makes the material of a spiral shape in advance with ferrimagnet, and its cross section can be rectangle or circle, it is rectangular for example with roller shear the reel silicon steel sheet to be cut into the narrow silicon steel sheet of many volumes, claims magnetic line.Treat that the iron core flank of tooth and magnetic line coat after the glue, this magnetic line is close to and is bonded in the coiling of iron core teeth surface and be spring-like (Fig. 4).
4, electric machine structure according to claim 1, its further feature is the structure of magnetic sleeve, because a lot of motors that are worth costliness are paid much attention to reliability, single magnetic sleeves of forming with some simple rings safety inadequately that just seems, so proposed the magnetic sleeve-type motor of band reinforcement, the magnetic sleeve of this motor and electric machine iron core all have some variations, the stator magnetic sleeve two sideband teeth of band reinforcement, concrete structure following (Fig. 5): rectangular (facewidth T1 is less than iron core facewidth T2) that at first the silicon steel sheet punching is become two sideband tooth A, then with 90 ° of flank of tooth bendings, rectangular vertical of the flank of tooth A that makes Fig. 5 shape with rectangular B, be welded into band tooth annulus again, the band tooth magnetic sleeve of composition diagram 6 shapes, tooth on the ring (being called for short the ring tooth later on) is corresponding to the tooth of stator core, and ring tooth A inserts in the middle of the lamination of stator iron core tooth, certainly, will correspondingly reserve many small gap corresponding to the position of ring tooth in the electric machine iron core tooth, the ring tooth just is inserted in and is bonded in these small gap.The manufacturing of the iron core of the stator of this structure can be adopted following method: the width of establishing the every ring of magnetic sleeve is K, the ring tooth depth is G, the interior radius of circle of stator punching is R, radius of circle is the punching of R+G in some so again, when core lamination stack, every just folded two punchings that interior radius of circle is R+G of the thickness of K, so just having formed some degree of depth every thickness K in iron core teeth is G, stitching wide is two slits that silicon steel sheet is wide, make each ring tooth A that corresponding slit all be arranged, right part among Figure 11 is the schematic diagram that tooth A inserts iron core, and P is that interior radius of circle is the iron core of R+G
5, electric machine structure according to claim 1, its further feature is the structure of magnetic sleeve, for rotor, the band ring gear can't bind round and sets up, and can be locked after on the rotor with the winding method or with the band tooth of Fig. 5 is rectangular, again with joint weld.Certainly, the needs of reserving gaps as gear shaping are also wanted in corresponding position on the iron core.
6, electric machine structure according to claim 1, its further feature is the structure of magnetic sleeve, magnetic sleeve also can be made the drum of Fig. 7 by the soft magnetic material of monoblock, this material requirements resistivity height, relatively good with regard to present employing ferrite, high sial steel or ultra high silicon aluminum steel, also available iron Magnaglo and adhesive glue are made.
7, electric machine structure according to claim 1, its further feature is the structure of magnetic sleeve, the eddy current of the metal made of one piece magnetic sleeve of Fig. 7 is very big, open some seams and can reduce eddy current, Fig. 8 severs some slits 6 vertically on the matrix of made of one piece magnetic sleeve, Fig. 9 be made of one piece magnetic must sleeve circumferential some slits 7 of severing in matrix upper edge, and inject resin glue and be used for remedying intensity and reinforced insulation, the alternate manner of slot distribution shape is to imagine easily, can not be exhaustive.If the circumferential slot 7 among Fig. 9 cut a full circle, then Fig. 8 has become one group of the same magnetic sleeve of being made up of short magnetic rings with Fig. 3.
8, electric machine structure according to claim 1, its further feature is the structure of magnetic sleeve, woven magnetic sleeve is very useful for the big motor of batch, Figure 10 is a woven magnetic cover, at position 11 corresponding to notch, with some nonmetallic silk threads one group of single magnetic annulus is woven into a complete magnetic sleeve, the 11st, the part that is woven also is the part corresponding to notch.Whole magnetic sleeve is bonded on the iron core.
9, electric machine structure according to claim 1, its further feature are the structures of magnetic sleeve, and ring tooth and iron core teeth are not necessarily just one to one, can be that the ring tooth is many, also can be that iron core teeth is many, also can be that ring tooth both sides are asymmetric or the like, and its variation is too numerous to enumerate.Also can be ring facewidth T1 less than half the half-breadth tooth of iron core facewidth T2, stator core radius of circle in the just folded a slice of the thickness of K is the punching of R+G, so just having formed some degree of depth every thickness K in iron core teeth is G, stitching wide is the wide slit of a slice silicon steel sheet, makes each ring tooth that corresponding slit all be arranged.The half-breadth tooth of adjacent two rings is not to paste mutually side by side, and in the common insertion iron core slot, the left part among Figure 11 is the schematic diagram that half-breadth tooth E, F insert iron core but front and back interlace, and P is that interior radius of circle is the iron core of R+G.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96118017 CN1155177A (en) | 1996-01-18 | 1996-01-18 | Magnetic sleeve type electric motor with reinforcing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96118017 CN1155177A (en) | 1996-01-18 | 1996-01-18 | Magnetic sleeve type electric motor with reinforcing structure |
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| Publication Number | Publication Date |
|---|---|
| CN1155177A true CN1155177A (en) | 1997-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96118017 Pending CN1155177A (en) | 1996-01-18 | 1996-01-18 | Magnetic sleeve type electric motor with reinforcing structure |
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| Country | Link |
|---|---|
| CN (1) | CN1155177A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311614C (en) * | 1998-09-08 | 2007-04-18 | 东芝株式会社 | Electric motor and method of making the same |
| CN102027227A (en) * | 2008-04-17 | 2011-04-20 | 森克罗尼公司 | High-speed permanent magnet motor and generator with low-loss metal rotor |
| CN106059159A (en) * | 2016-08-04 | 2016-10-26 | 珠海格力电器股份有限公司 | Stator core assembly and assembling method thereof, motor, compressor and air conditioner |
| CN111656647A (en) * | 2018-01-17 | 2020-09-11 | Abb瑞士股份有限公司 | Stator or rotor core of an electrical machine with reduced eddy current losses and high magnetic permeability and mechanical strength |
-
1996
- 1996-01-18 CN CN 96118017 patent/CN1155177A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311614C (en) * | 1998-09-08 | 2007-04-18 | 东芝株式会社 | Electric motor and method of making the same |
| CN102027227A (en) * | 2008-04-17 | 2011-04-20 | 森克罗尼公司 | High-speed permanent magnet motor and generator with low-loss metal rotor |
| CN106059159A (en) * | 2016-08-04 | 2016-10-26 | 珠海格力电器股份有限公司 | Stator core assembly and assembling method thereof, motor, compressor and air conditioner |
| CN111656647A (en) * | 2018-01-17 | 2020-09-11 | Abb瑞士股份有限公司 | Stator or rotor core of an electrical machine with reduced eddy current losses and high magnetic permeability and mechanical strength |
| US10992192B2 (en) | 2018-01-17 | 2021-04-27 | Abb Schweiz Ag | Stator core or a rotor core for an electrical machine with reduced eddy current losses and high magnetic conductivity and mechanical strength |
| CN111656647B (en) * | 2018-01-17 | 2021-06-22 | Abb瑞士股份有限公司 | Stator or rotor core of an electrical machine with reduced eddy current losses and high magnetic permeability and mechanical strength |
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