CN103166344A - Rotor punching sheet for permanent magnet motor and rotor - Google Patents
Rotor punching sheet for permanent magnet motor and rotor Download PDFInfo
- Publication number
- CN103166344A CN103166344A CN2011104092422A CN201110409242A CN103166344A CN 103166344 A CN103166344 A CN 103166344A CN 2011104092422 A CN2011104092422 A CN 2011104092422A CN 201110409242 A CN201110409242 A CN 201110409242A CN 103166344 A CN103166344 A CN 103166344A
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- rotor
- rotor punching
- magnetic steel
- magnet steel
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a rotor punching sheet for a permanent magnet motor and a rotor which is formed by a plurality of the rotor punching sheets being pressed in an overlapping mode. The rotor sheet for the permanent magnet motor comprises a plurality of magnetic steel grooves which are the same. Each magnetic steel groove comprises an axial groove which is formed along the axial direction of the rotor punching sheet and a horizontal groove which is vertical to the axial groove, an end portion of each axial groove is connected and communicated with the middle portion of a horizontal groove, a connecting portion is arranged inside each axial groove along the axial direction of the rotor punching sheet, each connecting portion penetrates through each axial groove to divide each magnetic steel groove into two L-shaped auxiliary magnetic steel grooves, and the axial part of each L-shaped auxiliary magnetic steel groove is communicated with the horizontal part of each L-shaped auxiliary magnetic steel groove. Through the method of changing the shapes of the magnetic steel grooves, the number of magnetism insulating bridges is reduced, useless magnetic flux leakage is lowered, the phenomenon that use ratio of permanent magnet materials is low due to the fact that flow of magnetic flux leakage of a permanent magnet is large is avoided, and mechanical strength of the rotor punching sheet is also improved through groove division processing of the magnetic steel grooves.
Description
Technical field
The invention belongs to technical field of motors, particularly relate to a kind of rotor punching for magneto and rotor.
Background technology
Asynchronous starting permanent magnet synchronous motor adopts the built-in rotor structure usually.In the built-in rotor structure, permanent magnet is arranged in the magnet steel groove that iron core is offered, and quadrature-axis reluctance is less than direct axis reluctance usually, and rotor magnetic circuit is asymmetric, produces reluctance torque, helps to improve overload capacity and torque density; The direct face air gaps of the rotor of cage modle, starting performance is good.The shortcoming of built-in structure is: at internal rotor, leakage field is large due to permanent magnet, and the permanent magnet utilance is low, must take accordingly every the magnetic measure with the restriction leakage field.Commonly used is to arrange every magnetic bridge between the magnet steel groove on rotor punching every the magnetic measure, makes rotor structure be tending towards complicated, mechanical strength variation every magnetic.Guaranteeing under the prerequisite of magnetic effect, more simple better every the magnetic measure.As shown in Figure 1, a kind of rotor punching of the prior art, rotor punching is offered the identical magnet steel groove of a plurality of shapes along its circumference, each magnet steel groove comprises the radial slot 15 that radially arranges along rotor punching and perpendicular to the transverse groove 16 of radial slot 15, the middle part of transverse groove 16 is connected to an end of the close rotating shaft of radial slot 15, forms the shape of " T " font.Offering a plurality of magnet steel grooves along its circumference on rotor punching, is disconnected between the end of the transverse groove 16 of two adjacent magnet steel grooves, forms every magnetic bridge 11.The shortcoming of the rotor punching of this shape is, because rotor punching is cut apart by a plurality of magnet steel grooves, and the area of each magnet steel groove is very large, leads the mechanical strength variation of rotor punching.
as shown in Figure 2, the another kind of rotor punching of prior art, its middle part at the radial slot of the magnet steel groove of above-mentioned " T " font is disposed radially connecting portion, thereby the magnet steel groove of " T " font is separated into two L-shaped sub-magnet steel grooves, the sub-magnet steel groove of each " L " shape comprises respectively the radial slot 25 that arranges along rotor radial and perpendicular to the transverse groove 26 of radial slot 25, one end of transverse groove 26 is positioned at an end of the close rotating shaft of radial slot 25, transverse groove 26 forms " L " shape with radial slot 25, and transverse groove 26 is unconnected with radial slot 25, form one both every magnetic bridge 21.Because the circumference along rotor punching is provided with a plurality of magnet steel grooves, form every magnetic bridge 22 between the transverse groove 26 of two adjacent magnet steel grooves.The shortcoming of the rotor punching of this shape is, there is one every magnetic bridge 21 in sub-magnet steel groove due to each " L " shape, and also exist every magnetic bridge 22 between two adjacent transverse grooves 26, because the quantity every magnetic bridge too much causes leakage field, the phenomenon that the permanent magnetic material utilance is too low.
Summary of the invention
In view of the foregoing defects the prior art has, the problem to be solved in the present invention is, a kind of rotor punching for magneto is provided, has reached the requirement of mechanical strength that reduces leakage field and improve rotor punching by the shape that changes the magnet steel groove that is used for the installation permanent magnet on rotor punching.
For solving the problems of the technologies described above, the invention provides a kind of rotor punching for magneto, comprise the magnet steel groove that a plurality of shapes are identical, each described magnet steel groove comprises that the end of described radial slot joins and is connected with the middle part of described transverse groove along the radial slot that radially arranges of described rotor punching with perpendicular to the transverse groove of described radial slot; Be provided with the connecting portion radially along described rotor punching in described radial slot, described connecting portion runs through described radial slot described magnet steel groove is separated into two sub-magnet steel grooves of " L " shape, and the radial component of the sub-magnet steel groove of each described " L " shape is connected with the lateral part.
As preferably, described connecting portion is used for separating described transverse slot portion and is divided into triangle.
The present invention also provides a kind of rotor for magneto, comprises the rotor punching as above that multi-disc overlaps together.
Compared with prior art, the invention has the beneficial effects as follows: by changing the shape of magnet steel groove, minimizing is every the number of magnetic bridge, reduced invalid leakage field, avoided causing because the leakage flux of permanent magnet is excessive the too low phenomenon of permanent magnetic material utilance, minute groove by the magnet steel groove is processed, and has also improved the mechanical strength of rotor punching.
Description of drawings
Fig. 1 is the structural representation of a kind of rotor punching for magneto of prior art;
Fig. 2 is the structural representation that the another kind of prior art is used for the rotor punching of magneto;
Fig. 3 is the structural representation of the rotor punching that is used for magneto of embodiments of the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not as a limitation of the invention.
As shown in Figure 3, the rotor punching that is used for magneto of embodiments of the invention, comprise a plurality of identical magnet steel grooves, each magnet steel groove comprises that the end of radial slot 35 joins and is connected with the middle part of transverse groove 36 along the radial slot 35 that radially arranges of rotor punching with perpendicular to the transverse groove 36 of radial slot 35; Be provided with the connecting portion radially 39 along rotor punching in radial slot 35, connecting portion 39 runs through radial slot 35 described magnet steel groove is separated into two sub-magnet steel grooves of " L " shape, and the radial component of the sub-magnet steel groove of each described " L " shape is connected with the lateral part.The connecting portion 39 that runs through the middle part of radial slot 35 and arrange is divided into two parts to radial slot 35, and connecting portion 39 can connect two parts that rotor punching is separated by the magnet steel groove, improves the mechanical strength of whole rotor punching.Because lateral part and the radial component of every sub-magnet steel groove connects mutually, reduce the number every magnetic bridge, reduced invalid leakage field, avoided causing because the leakage flux of permanent magnet is excessive the too low phenomenon of permanent magnetic material utilance.Only there is one every magnetic bridge 32 between the transverse groove 36 of two adjacent magnet steel grooves.As shown in Figure 3, as preferably, in the present embodiment, the part that connecting portion 39 is used for separating transverse groove 36 is triangle, can fully increase the area of connecting portion 39, improves its mechanical strength.
The present invention also provides a kind of rotor for magneto, by comprising the multi-disc that overlaps together rotor punching as above.Based on reason as above, rotor of the present invention also has the invalid leakage field of reduction, improves the advantage of rotor mechanical intensity.
Need to prove, the motor of mentioning in claims of the present invention and specification had both comprised that motor also comprised generator.
Certainly, the above is the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.
Claims (3)
1. rotor punching that is used for magneto, comprise the magnet steel groove that a plurality of shapes are identical, each described magnet steel groove comprises that the end of described radial slot joins and is connected with the middle part of described transverse groove along the radial slot that radially arranges of described rotor punching with perpendicular to the transverse groove of described radial slot; It is characterized in that,
Be provided with the connecting portion radially along described rotor punching in described radial slot, described connecting portion runs through described radial slot described magnet steel groove is separated into two sub-magnet steel grooves of " L " shape, and the radial component of the sub-magnet steel groove of each described " L " shape is connected with the lateral part.
2. the rotor punching for magneto as claimed in claim 1, is characterized in that, described connecting portion is used for separating described transverse slot portion and is divided into triangle.
3. a rotor that is used for magneto, is characterized in that, comprises the rotor punching as claimed in claim 1 or 2 that multi-disc overlaps together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104092422A CN103166344A (en) | 2011-12-09 | 2011-12-09 | Rotor punching sheet for permanent magnet motor and rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104092422A CN103166344A (en) | 2011-12-09 | 2011-12-09 | Rotor punching sheet for permanent magnet motor and rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103166344A true CN103166344A (en) | 2013-06-19 |
Family
ID=48589171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104092422A Pending CN103166344A (en) | 2011-12-09 | 2011-12-09 | Rotor punching sheet for permanent magnet motor and rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103166344A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071570A (en) * | 2015-08-19 | 2015-11-18 | 武汉迈信电气技术有限公司 | V-shaped rotor structure and built-in permanent-magnetism motor with V-shaped rotor structure |
| CN106712342A (en) * | 2015-07-31 | 2017-05-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor and rotor thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2103218U (en) * | 1991-04-18 | 1992-04-29 | 西北工业大学 | Rare-earth permanent-magnet synchronous motor with whole rotor light-charge structure |
| CN2211668Y (en) * | 1994-12-16 | 1995-11-01 | 曾和清 | Permanent magnetic electric generator with laminated rotor |
| CN1196597A (en) * | 1997-04-14 | 1998-10-21 | 三洋电机株式会社 | Rotor for electric machine |
| CN201584833U (en) * | 2009-12-26 | 2010-09-15 | 中国矿业大学 | Rotor structure of permanent magnet synchronous motor with non-uniform distributed rotor conductors |
| CN201797424U (en) * | 2010-08-10 | 2011-04-13 | 福建闽东电机有限公司 | Medium-low speed high-power density permanent magnet motor |
| CN102130523A (en) * | 2010-01-14 | 2011-07-20 | 株式会社安川电机 | Rotor for use in IPM rotating electric machine, and IPM rotating electric machine provided with the rotor |
| WO2011089797A1 (en) * | 2010-01-19 | 2011-07-28 | 株式会社安川電機 | Rotor, rotating electrical machine using same, and power generator |
| CN201985648U (en) * | 2011-04-21 | 2011-09-21 | 江苏安捷机电技术有限公司 | Rotor punching for 100-model tombarthite permanent magnet synchronous motor |
| CN202004552U (en) * | 2011-01-24 | 2011-10-05 | 河南理工大学 | Improved permanent magnet motor rotor |
| CN202424461U (en) * | 2011-12-09 | 2012-09-05 | 安徽明腾永磁机电设备有限公司 | Rotor sheet and rotor for permanent-magnet motor |
-
2011
- 2011-12-09 CN CN2011104092422A patent/CN103166344A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2103218U (en) * | 1991-04-18 | 1992-04-29 | 西北工业大学 | Rare-earth permanent-magnet synchronous motor with whole rotor light-charge structure |
| CN2211668Y (en) * | 1994-12-16 | 1995-11-01 | 曾和清 | Permanent magnetic electric generator with laminated rotor |
| CN1196597A (en) * | 1997-04-14 | 1998-10-21 | 三洋电机株式会社 | Rotor for electric machine |
| CN201584833U (en) * | 2009-12-26 | 2010-09-15 | 中国矿业大学 | Rotor structure of permanent magnet synchronous motor with non-uniform distributed rotor conductors |
| CN102130523A (en) * | 2010-01-14 | 2011-07-20 | 株式会社安川电机 | Rotor for use in IPM rotating electric machine, and IPM rotating electric machine provided with the rotor |
| WO2011089797A1 (en) * | 2010-01-19 | 2011-07-28 | 株式会社安川電機 | Rotor, rotating electrical machine using same, and power generator |
| CN201797424U (en) * | 2010-08-10 | 2011-04-13 | 福建闽东电机有限公司 | Medium-low speed high-power density permanent magnet motor |
| CN202004552U (en) * | 2011-01-24 | 2011-10-05 | 河南理工大学 | Improved permanent magnet motor rotor |
| CN201985648U (en) * | 2011-04-21 | 2011-09-21 | 江苏安捷机电技术有限公司 | Rotor punching for 100-model tombarthite permanent magnet synchronous motor |
| CN202424461U (en) * | 2011-12-09 | 2012-09-05 | 安徽明腾永磁机电设备有限公司 | Rotor sheet and rotor for permanent-magnet motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712342A (en) * | 2015-07-31 | 2017-05-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor and rotor thereof |
| CN105071570A (en) * | 2015-08-19 | 2015-11-18 | 武汉迈信电气技术有限公司 | V-shaped rotor structure and built-in permanent-magnetism motor with V-shaped rotor structure |
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Application publication date: 20130619 |