CN105119398A - Stator iron core and motor - Google Patents
Stator iron core and motor Download PDFInfo
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- CN105119398A CN105119398A CN201510586793.4A CN201510586793A CN105119398A CN 105119398 A CN105119398 A CN 105119398A CN 201510586793 A CN201510586793 A CN 201510586793A CN 105119398 A CN105119398 A CN 105119398A
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- iron core
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Abstract
The invention provides a stator iron core and a motor. The stator iron core is provided with a plurality of uniformly distributed slots along the axial direction. In this way, the slot effect of the motor is minimized, and the frequency of the motor is improved. Meanwhile, the influence of harmonic waves is weakened by two times, three times or more. The vibration degree of the motor is lowered, so that the motor runs more stably. The ventilation area between the rotor and the stator of the motor is increased, so that a larger air flue is generated during the rotation process of the rotor. Therefore, the air-cooling effect of the motor is improved, and the weight of the motor is lightened. The weight of the iron core of the motor is also lightened. Both the core loss and the iron loss are lowered. Moreover, the performance of the motor is not reduced at all. At the same time, the air gap is increased to weaken the distortion of the magnetic field. The bad influence on the commutation process of the motor is reduced, so that the commutation effect of the motor is improved. The commutation spark of the motor is also improved, and the radio interference is relieved.
Description
Technical field
The present invention relates to machine field, particularly relate to a kind of stator core and motor.
Background technology
Series excited machine is also known as universal motor, have and be easy to speed governing, the high rotation speed requirements (can reach 30,000-40,000 rev/min) of machine tool to motor can be met, and the special domestic animal of the machinery of series excited machine is softer, overload capacity is comparatively strong, and during overload, the torque of motor can increase gradually along with the reduction of rotating speed, therefore, series excited machine obtains at Power Tools Industries and generally applies.
But, the core configuration of tradition series excited motor stator and rotor is generally made up of stator 2Xn slot for winding and rotor 2Xp slot for winding, during machine operation, because rotor core shape creates teeth portion harmonic wave, cause and can not weaken noise of motor and vibrations, changing into rotation completely from conservation of energy principle electric energy is best circumstance, and the acoustic energy that harmonic resonance causes, heat energy, vibration waste a large amount of energy, reduce the conversion efficiency of electric energy.
Under normal circumstances, the armature core surface of motor has groove, and especially large-size machine is nearly all open slot, and (under tooth, air gap is less, and magnetic conductance is large to make the waveform of air-gap flux can be subject to the impact of armature teeth groove; And notch place air gap is comparatively large, magnetic conductance is little), the position magnetic circuit reluctance different due to rotor is different, thus just can produce teeth portion harmonic wave.With regard to harmonic wave, number of times is higher, and its amplitude is less, also less on the impact of motor, reduces the change of air-gap permeance.The measure reducing harmonic wave has semi-enclosed slot, closed slot, magnetic slot-seal.
The rotor of existing motor can form multiple fluting.As mentioned previously, the position magnetic circuit reluctance different due to rotor is different, thus just can produce teeth portion harmonic wave.Teeth portion harmonic wave can cause motor oscillating, runs not steady.Harmonic magnetic potential and harmonic current produce rotational voltage and commutation adverse influence; And produce heat, increase electromagnetic interference.Be consumed in the copper loss in conductor resistance, be consumed in the mechanical loss of friction main ventilation, the iron loss be consumed in iron core produced by coupled magnetic field, produce heat, reduction product efficiency makes effectively to export reduction.
Summary of the invention
The object of the present invention is to provide a kind of stator core and motor, the energy loss that teeth portion harmonic wave causes can be reduced, the operating efficiency of further lifting motor, make motor rotation obtain characteristic more stably, improve resource utilization.
In order to realize above-mentioned target, the present invention proposes a kind of stator core, stator core is axially formed multiple uniform fluting.
Further, in described stator core, the number of described fluting is odd number.
Further, in described stator core, the number of described fluting is prime number.
Further, in described stator core, described fluting is with axially parallel.
Further, in described stator core, described fluting and axis are in predetermined angle.
Further, in described stator core, described predetermined angle is less than 45 degree.
Further, in described stator core, the depth bounds of described fluting is 0.5mm ~ 2mm.
Further, in described stator core, the degree of depth of described fluting is all not identical.
Further, in described stator core, described groove depth is the gradual change type degree of depth.
In the present invention, also proposed a kind of motor, comprise stator core as described above.
Compared with prior art, beneficial effect of the present invention is mainly reflected in: slot on stator, and motor teeth groove can be made to react and diminish, the frequency improves and weakens secondary, three times and above harmonic influence, reduces vibration sense, makes motor rotation more steady; Increase the draught area between rotor, in rotor rotation process, produce larger air channel, increase the air cooling effect of motor itself; Alleviate motor weight in addition, reduce the weight of electric machine iron core, reduce iron loss, iron loss, and the performance of motor can not be reduced; Meanwhile, increase the distortion of air gap weakened field and the adverse effect to commutation thereof, improve commutation effect, improve commutation spark, reduce wireless interference.
Accompanying drawing explanation
Fig. 1 is the generalized section of stator module in the embodiment of the present invention one;
Fig. 2 is the vertical view of stator module in the embodiment of the present invention one;
Fig. 3 is the vertical view of stator module in the embodiment of the present invention two.
Embodiment
Below in conjunction with schematic diagram, stator core of the present invention and motor are described in more detail, which show the preferred embodiments of the present invention, should be appreciated that those skilled in the art can revise the present invention described here, and still realize advantageous effects of the present invention.Therefore, following description is appreciated that extensively knowing for those skilled in the art, and not as limitation of the present invention.
In order to clear, whole features of practical embodiments are not described.They in the following description, are not described in detail known function and structure, because can make the present invention chaotic due to unnecessary details.Will be understood that in the exploitation of any practical embodiments, a large amount of implementation detail must be made to realize the specific objective of developer, such as, according to regarding system or the restriction about business, change into another embodiment by an embodiment.In addition, will be understood that this development may be complicated and time-consuming, but be only routine work to those skilled in the art.
In the following passage, more specifically the present invention is described by way of example with reference to accompanying drawing.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.
Embodiment one
In the present embodiment, propose a kind of stator core, stator core is axially formed multiple uniform fluting.
Concrete, please refer to Fig. 1 and Fig. 2, stator module comprises stator core 1, pressing plate 2,4 lead-out wire, stator winding 5 and seal 6.Concrete stator module and stator module of the prior art similar, do not repeat them here.
Wherein, in the present embodiment, stator core 1 is formed multiple uniform fluting 3, and wherein, the number of described fluting 3 is odd number, be preferably prime number, can offset with epitrochanterian fluting like this, motor teeth groove is reacted and diminishes, the frequency improves and weakens secondary, three times and above harmonic influence, reduce vibration sense, make motor rotation more steady.
Please refer to Fig. 2, in the present embodiment, described fluting 3 is parallel with the axis of stator core 1 with rotor, namely forms axial groove, and is evenly distributed on stator core 1.The axial groove formed can increase the draught area between rotor, produces larger air channel in rotor rotation process, increases the air cooling effect of motor itself.
In the present embodiment, the depth bounds of described fluting 3 is 0.5mm ~ 2mm.The degree of depth of all flutings 3 can be uniform depth, also can be different depth.In order to preparation technology is more prone to realize, then can form a kind of groove depth be the gradual change type degree of depth 3, and fluting 3 degree of depth namely near stator core 1 both sides is little, and middle fluting 3 degree of depth greatly, slot 3 degree of depth symmetrically gradual change type by both sides.
In addition, in the another aspect of the present embodiment, also proposed a kind of motor, comprise stator core 1 as described above.
Stator core 1 is formed multiple fluting 3, the weight of electric machine iron core can be reduced, alleviate motor weight, reduce iron loss, iron loss, and the performance of motor can not be reduced.In addition, the distortion of air gap weakened field and the adverse effect to commutation thereof is also increased.Improve commutation effect, improve commutation spark, reduce wireless interference.
Embodiment two
In the present embodiment, the stator module proposed and a kind of stator module of embodiment similar, difference is the fluting 3 of formation on stator core 1 and is axially predetermined angle α, described predetermined angle α is less than 45 degree, under normal circumstances, predetermined angle α can be 30 degree, and it is favourable to form the rotor turns of oblique slot to motor.All the other are all identical with embodiment one, concrete can reference example one, therefore not to repeat here.
To sum up, in the stator core provided in the embodiment of the present invention and motor, stator is slotted, and motor teeth groove can be made to react and diminish, the frequency improves and weakens secondary, three times and above harmonic influence, reduces vibration sense, makes motor rotation more steady; Increase the draught area between rotor, in rotor rotation process, produce larger air channel, increase the air cooling effect of motor itself; Alleviate motor weight in addition, reduce the weight of electric machine iron core, reduce iron loss, iron loss, and the performance of motor can not be reduced; Meanwhile, increase the distortion of air gap weakened field and the adverse effect to commutation thereof, improve commutation effect, improve commutation spark, reduce wireless interference.
Above are only the preferred embodiments of the present invention, any restriction is not played to the present invention.Any person of ordinary skill in the field; in the scope not departing from technical scheme of the present invention; the technical scheme disclose the present invention and technology contents make the variations such as any type of equivalent replacement or amendment; all belong to the content not departing from technical scheme of the present invention, still belong within protection scope of the present invention.
Claims (10)
1. a stator core, is characterized in that, stator core is axially formed multiple uniform fluting.
2. stator core as claimed in claim 1, it is characterized in that, the number of described fluting is odd number.
3. stator core as claimed in claim 1, it is characterized in that, the number of described fluting is prime number.
4. stator core as claimed in claim 1, is characterized in that, described fluting is with axially parallel.
5. stator core as claimed in claim 1, is characterized in that, described fluting and axis are in predetermined angle.
6. stator core as claimed in claim 5, it is characterized in that, described predetermined angle is less than 45 degree.
7. stator core as claimed in claim 1, it is characterized in that, the depth bounds of described fluting is 0.5mm ~ 2mm.
8. stator core as claimed in claim 1, it is characterized in that, the degree of depth of described fluting is all not identical.
9. stator core as claimed in claim 8, it is characterized in that, described groove depth is the gradual change type degree of depth.
10. a motor, is characterized in that, comprises any one stator core as described in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510586793.4A CN105119398A (en) | 2015-09-15 | 2015-09-15 | Stator iron core and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510586793.4A CN105119398A (en) | 2015-09-15 | 2015-09-15 | Stator iron core and motor |
Publications (1)
| Publication Number | Publication Date |
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| CN105119398A true CN105119398A (en) | 2015-12-02 |
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| CN201510586793.4A Pending CN105119398A (en) | 2015-09-15 | 2015-09-15 | Stator iron core and motor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06141492A (en) * | 1992-10-23 | 1994-05-20 | Mitsui High Tec Inc | Laminated iron core for motor |
| CN101106291A (en) * | 2007-07-25 | 2008-01-16 | 上海洛克磁业有限公司 | A structure for generator stator punching sheet |
| CN101562361A (en) * | 2009-05-13 | 2009-10-21 | 卓本与 | Single-phase multifunctional rare-earth permanent magnet generator |
| JP5554641B2 (en) * | 2010-05-27 | 2014-07-23 | 一彦 後藤 | Rotating electrical iron core |
| JP5574931B2 (en) * | 2010-11-30 | 2014-08-20 | 三菱電機株式会社 | Stator core manufacturing equipment |
| CN204012965U (en) * | 2014-07-28 | 2014-12-10 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator core construction and there is its motor |
| CN205017122U (en) * | 2015-09-15 | 2016-02-03 | 锐奇控股股份有限公司 | Stator core and motor |
-
2015
- 2015-09-15 CN CN201510586793.4A patent/CN105119398A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06141492A (en) * | 1992-10-23 | 1994-05-20 | Mitsui High Tec Inc | Laminated iron core for motor |
| CN101106291A (en) * | 2007-07-25 | 2008-01-16 | 上海洛克磁业有限公司 | A structure for generator stator punching sheet |
| CN101562361A (en) * | 2009-05-13 | 2009-10-21 | 卓本与 | Single-phase multifunctional rare-earth permanent magnet generator |
| JP5554641B2 (en) * | 2010-05-27 | 2014-07-23 | 一彦 後藤 | Rotating electrical iron core |
| JP5574931B2 (en) * | 2010-11-30 | 2014-08-20 | 三菱電機株式会社 | Stator core manufacturing equipment |
| CN204012965U (en) * | 2014-07-28 | 2014-12-10 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator core construction and there is its motor |
| CN205017122U (en) * | 2015-09-15 | 2016-02-03 | 锐奇控股股份有限公司 | Stator core and motor |
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Application publication date: 20151202 |
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| RJ01 | Rejection of invention patent application after publication |