CN205160314U - Compound motor - Google Patents

Compound motor Download PDF

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Publication number
CN205160314U
CN205160314U CN201520922187.0U CN201520922187U CN205160314U CN 205160314 U CN205160314 U CN 205160314U CN 201520922187 U CN201520922187 U CN 201520922187U CN 205160314 U CN205160314 U CN 205160314U
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rotor
stator
bearing
electric motor
composite electric
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CN201520922187.0U
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张喜明
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张喜明
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Abstract

The utility model relates to a compound motor, including a coaxial hollow cylinder shape rotor structure who arranges of n and a n -1 coaxial hollow cylinder shape stator structure who arranges, wherein, n be more than or equal to 2's integer, and a n rotor structure arranges from inside to outside along the direction of perpendicular to axial lead that stator structure of grafting sets up a bearing between per two rotor structure in the most inboard rotor structure, just has the clearance between the surface of inboard rotor structure's internal surface and bearing, a n rotor structure is with the mutual fixed connection of one end and form a rotor terminal surface, and a n -1 stator structure and bearing are at the one end mutual fixed connection opposite with the rotor terminal surface and form a stator terminal surface. The utility model discloses compare with traditional single rotor list stator structure's motor can the make full use of motor the inner space, overcome the magnetism pulling force, reduce the magnetic leakage, increase substantially the torque density and the efficiency of motor.

Description

A kind of composite electric motor
Technical field
The utility model relates to electric motors, particularly relates to a kind of composite electric motor.
Background technology
High torque density and high efficiency are two most important indexs that motor is pursued always, and the improvement of these two technology is the most important thing in machine field research always.
Permagnetic synchronous motor conventional on the market has at present been a Performance comparision excellence, has met the promising motor of market development, but or the demand of some requirements at the higher level cannot be met, such as can't to reach under fully effectively the utilizing of magnetic field and electromagnetic field, super high torque density, more high efficiency, low volume, high capacity zero start and turn the technique effect such as stifled, therefore for the problems referred to above, the utility model proposes a kind of composite electric motor.
Utility model content
The utility model, in order to solve the problems of the technologies described above, provides a kind of composite electric motor.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of composite electric motor, comprise n coaxially arranged hollow cylinder rotor structure and the individual coaxially arranged hollow cylinder stator structure of n-1, wherein, n be more than or equal to 2 integer, n described rotor structure is arranged from inside to outside along the direction perpendicular to axial line, grafting described stator structure between every two described rotor structures, in the described rotor structure of inner side, a bearing is set, and there is gap between the inner surface of the described rotor structure in inner side and the outer surface of described bearing;
N described rotor structure is mutually permanently connected in same one end and forms a rotor end-face, and n-1 described stator structure and described bearing are mutually permanently connected in one end contrary with described rotor end-face and form a stator faces.
On the basis of technique scheme, the utility model can also do following improvement.
Further, the outer face of described rotor end-face is provided with a driving shaft.
Further, the outer face of described stator faces is provided with a fixed axis.
Further, described rotor end-face is all identical with the overall diameter of rotor structure described in outermost with the diameter of described stator faces.
Further, the edge inwardly protruding of described stator faces inner face forms a bound edge.
Further, the outer surface edge of outermost described rotor structure near one end of described stator faces forms an annular breach agreed with mutually with described bound edge shape.
Further, described bearing comprises bearing main body and bearing end, and described bearing end is positioned at described bearing one end near described rotor end-face, and the diameter of described bearing end is greater than the diameter of described bearing main body.
Further, the described rotor structure inner surface in inner side and form ring-shaped depression near the side of described rotor end-face, the shape of described ring-shaped depression is agreed with mutually with the shape of described bearing end.
Further, described rotor structure comprises rotor core and the permanent magnet of hollow cylinder, and described permanent magnet adopts the mode of built-in, external or built-in and external mixing to be arranged on described rotor core.
Further, described stator structure comprises stator core and stator winding, and described stator winding adopts the mode of ring winding to be wound on described stator core.
The beneficial effects of the utility model are: composite electric motor of the present utility model can make full use of the inner space of motor compared with the motor of traditional single rotor list stator structure, overcome magnetic pull, reduce leakage field, increase substantially torque density and the efficiency of motor.
Accompanying drawing explanation
The cross section structure figure that Fig. 1 is composite electric motor n described in the utility model when being 2;
The cross section structure figure that Fig. 2 is composite electric motor n described in the utility model when being 3;
The operation logic figure of the composite electric motor that Fig. 3 is n when being 3.
In accompanying drawing, the list of parts representated by each label is as follows:
1, the first rotor structure, the 2, second rotor structure, 3, third trochanter structure, 4, the first stator structure, the 5, second stator structure, 6, bearing, 7, rotor end-face, 8, stator faces, 9, driving shaft, 10, fixed axis, 11, bound edge, 12, annular breach, 13, bearing main body, 14, bearing end, 15, ring-shaped depression.
Embodiment
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
A kind of composite electric motor, comprise n coaxially arranged hollow cylinder rotor structure and the individual coaxially arranged hollow cylinder stator structure of n-1, wherein, n be more than or equal to 2 integer, n rotor structure is arranged from inside to outside along the direction perpendicular to axial line, grafting stator structure between every two rotor structures, arranges a bearing in the rotor structure of inner side, and there is gap between the inner surface of the described rotor structure in inner side and the outer surface of described bearing; N rotor structure is mutually permanently connected in same one end and forms a rotor end-face, and n-1 stator structure and bearing are mutually permanently connected in one end contrary with rotor end-face and form a stator faces.
Rotor structure comprises rotor core and the permanent magnet of hollow cylinder, and permanent magnet can adopt the mode of built-in, external and built-in and external mixing to be arranged on rotor core; Built-in connection with the inner surface of rotor core by permanent magnet is arranged, external to be connected with the outer surface of rotor core by permanent magnet and to arrange, the hybrid outer surface being arranged at rotor core by part permanent magnet, part permanent magnet is arranged at the inner surface of rotor core; Stator structure comprises stator core and stator winding, and stator winding can adopt the mode of ring winding to be wound on stator core, also can adopt the winding method of common electric machine.
The outer face of rotor end-face is provided with a driving shaft, and the external drive unit of driving shaft when the driving shaft rotates, can drive n rotor structure synchronous axial system together; The outer face of stator faces is provided with a fixed axis, n-1 stator structure and bearing can be fixed.
Rotor end-face is all identical with the overall diameter of outermost rotor structure with the diameter of stator faces, and the edge inwardly protruding of stator faces inner face forms a bound edge, accordingly, the outer surface edge of outermost rotor structure near one end of stator faces forms an annular breach, overall structure can be made so compacter, save motor interior space.
Bearing comprises bearing main body and bearing end, and bearing end is positioned at bearing one end near rotor end-face, and the diameter of bearing end is greater than the diameter of bearing main body.Accordingly, most inboard rotor structure interior surface and form ring-shaped depression near the side of rotor end-face, the shape of ring-shaped depression is agreed with mutually with the shape of bearing end, can ensure that the overall structure of n-1 stator structure and bearing formation can not depart from the overall structure of n rotor structure formation easily like this, make overall structure more stable.
Composite electric motor of the present utility model can have various topological structures design according to actual needs.When the direction of magnetization of the permanent magnet of adjacent two rotor structures is identical or contrary, form the flux loop that N-S and N-N two kinds is multi-form.N-N type permanent magnet forms two flux loop in parallel to adjacent two rotor cores, and N-S type permanent magnet forms the flux loop of a series connection.
For constant electric and magnetic loading, size and the air gap surface area of motor Driving Torque are directly proportional.The unique texture of composite electric motor of the present utility model makes its volume only increase a bit, but air gap area increase a lot, the air gap area of the motor of two rotor structures just increases nearly one times, and this is first reason that torque density is improved; Secondly, for the motor that external diameter size is identical, the diameter of the outer air gap of motor of the present utility model is larger than the diameter of common magneto air gap, under identical surface current and air gap flux density, torque in the outer air gap of motor of many rotor structures is also large than the torque of common magneto, and this is also second reason that torque density is improved; On the other hand, compared with conventional motors, the motor of many rotor structures can adopt ring winding mode, and the inside and outside two sides of stator core is all utilized, and greatly improves the utilance of stator core; The length of many rotor structures motor stator winding increases with the increase of electromotor diameter hardly in addition, therefore by optimizing stator structure internal diameter and the length of motor, greatly can improve the performance improving motor.
The cross section structure figure that Fig. 1 is composite electric motor n described in the utility model when being 2.
As shown in Figure 1, when n is 2, rotor structure has 2, be followed successively by the first rotor structure 1 and the second rotor structure 2 from inside to outside, stator structure has 1, it is the first stator structure 4, first stator structure 4 is between the first rotor structure 1 and the second rotor structure 2, a bearing 6 is provided with in the first rotor structure 1, and there is gap between the outer surface of the inner surface of the first rotor structure 1 and bearing 6, the first rotor structure 1 and the second rotor structure 2 are mutually permanently connected in same one end and form a rotor end-face 7, first stator structure 4 and bearing 6 are mutually permanently connected in one end contrary with rotor end-face 7 and form a stator faces 8.The outer face of rotor end-face 7 is provided with a driving shaft 9, and the outer face of stator faces 8 is provided with a fixed axis 10.
Rotor end-face 7 is all identical with the overall diameter of the second rotor structure 2 with the diameter of stator faces 8, and the edge inwardly protruding of stator faces 8 inner face forms a bound edge 11, accordingly, the outer surface edge of the second rotor structure 3 near one end of stator faces 8 forms an annular breach 12.
Bearing 6 comprises bearing main body 13 and bearing end 14, and bearing end 14 is positioned at bearing 6 one end near rotor end-face 7, and the diameter of bearing end 14 is greater than the diameter of bearing main body 13.Accordingly, the first rotor structure 1 inner surface and near rotor end-face 7 side formed ring-shaped depression 15, the shape of ring-shaped depression 15 is agreed with mutually with the shape of bearing end 14.
The cross section structure figure that Fig. 2 is composite electric motor n described in the utility model when being 3.
As shown in Figure 2, when n is 3, rotor structure has 3, be followed successively by the first rotor structure 1 from inside to outside, second rotor structure 2 and third trochanter structure 3, stator structure has 2, be respectively the first stator structure 4 and the second stator structure 5, first stator structure 4 is between the first rotor structure 1 and the second rotor structure 2, second stator structure 5 is between the second rotor structure 2 and third trochanter structure 3, a bearing 6 is provided with in the first rotor structure 1, and there is gap between the outer surface of the inner surface of the first rotor structure 1 and bearing 6, the first rotor structure 1, second rotor structure 2 and third trochanter structure 3 are mutually permanently connected in same one end and form a rotor end-face 7, first stator structure 4, second stator structure 5 and bearing 6 are mutually permanently connected in one end contrary with rotor end-face 7 and form a stator faces 8.The outer face of rotor end-face 7 is provided with a driving shaft 9, and the outer face of stator faces 8 is provided with a fixed axis 10.
Rotor end-face 7 is all identical with the overall diameter of third trochanter structure 3 with the diameter of stator faces 8, and the edge inwardly protruding of stator faces 8 inner face forms a bound edge 11, accordingly, the outer surface edge of third trochanter structure 3 near one end of stator faces 8 forms an annular breach 12.
Bearing 6 comprises bearing main body 13 and bearing end 14, and bearing end 14 is positioned at bearing 6 one end near rotor end-face 7, and the diameter of bearing end 14 is greater than the diameter of bearing main body 13.Accordingly, the first rotor structure 1 inner surface and near rotor end-face 7 side formed ring-shaped depression 15, the shape of ring-shaped depression 15 is agreed with mutually with the shape of bearing end 14.
The operation logic figure of the composite electric motor that Fig. 3 is n when being 3.
As shown in Figure 3, when n is 3, rotor structure has 3, stator structure has 2, Fig. 3 is followed successively by bearing-rotor structure-stator structure-rotor structure-stator structure-rotor structure from inside to outside, wherein the rotor core inner surface of rotor structure is provided with four circular arc sheet permanent magnet poles, and when after the stator winding electrifying in stator structure, magnetic pole and magnetic field as shown in Figure 3.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.

Claims (10)

1. a composite electric motor, it is characterized in that, comprise n coaxially arranged hollow cylinder rotor structure and the individual coaxially arranged hollow cylinder stator structure of n-1, wherein, n be more than or equal to 2 integer, n described rotor structure is arranged from inside to outside along the direction perpendicular to axial line, grafting described stator structure between every two described rotor structures, in the described rotor structure of inner side, a bearing is set, and there is gap between the inner surface of the described rotor structure in inner side and the outer surface of described bearing;
N described rotor structure is mutually permanently connected in same one end and forms a rotor end-face, and n-1 described stator structure and described bearing are mutually permanently connected in one end contrary with described rotor end-face and form a stator faces.
2. composite electric motor according to claim 1, is characterized in that, the outer face of described rotor end-face is provided with a driving shaft.
3. composite electric motor according to claim 1, is characterized in that, the outer face of described stator faces is provided with a fixed axis.
4. composite electric motor according to claim 1, is characterized in that, described rotor end-face is all identical with the overall diameter of rotor structure described in outermost with the diameter of described stator faces.
5. composite electric motor according to claim 1, is characterized in that, the edge inwardly protruding of described stator faces inner face forms a bound edge.
6. composite electric motor according to claim 5, is characterized in that, the outer surface edge of outermost described rotor structure near one end of described stator faces forms an annular breach agreed with mutually with described bound edge shape.
7. composite electric motor according to claim 1, it is characterized in that, described bearing comprises bearing main body and bearing end, and described bearing end is positioned at described bearing one end near described rotor end-face, and the diameter of described bearing end is greater than the diameter of described bearing main body.
8. composite electric motor according to claim 7, is characterized in that, the described rotor structure inner surface in inner side and form ring-shaped depression near the side of described rotor end-face, and the shape of described ring-shaped depression is agreed with mutually with the shape of described bearing end.
9. the composite electric motor according to any one of claim 1-8, it is characterized in that, described rotor structure comprises rotor core and the permanent magnet of hollow cylinder, and described permanent magnet adopts the mode of built-in, external or built-in and external mixing to be arranged on described rotor core.
10. the composite electric motor according to any one of claim 1-8, is characterized in that, described stator structure comprises stator core and stator winding, and described stator winding adopts the mode of ring winding to be wound on described stator core.
CN201520922187.0U 2015-11-18 2015-11-18 Compound motor Active CN205160314U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520922187.0U CN205160314U (en) 2015-11-18 2015-11-18 Compound motor

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Application Number Priority Date Filing Date Title
CN201520922187.0U CN205160314U (en) 2015-11-18 2015-11-18 Compound motor

Publications (1)

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Application Number Title Priority Date Filing Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105281511A (en) * 2015-11-18 2016-01-27 张喜明 A compound type motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105281511A (en) * 2015-11-18 2016-01-27 张喜明 A compound type motor

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