CN205945259U - Motor, stator core and stator is towards piece thereof - Google Patents

Motor, stator core and stator is towards piece thereof Download PDF

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Publication number
CN205945259U
CN205945259U CN201620779159.2U CN201620779159U CN205945259U CN 205945259 U CN205945259 U CN 205945259U CN 201620779159 U CN201620779159 U CN 201620779159U CN 205945259 U CN205945259 U CN 205945259U
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CN
China
Prior art keywords
stator
curved surfaces
tooth
hole
punching
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CN201620779159.2U
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Chinese (zh)
Inventor
黄耀鹏
李尚平
范少稳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Zhuhai Landa Compressor Co Ltd
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Zhuhai Landa Compressor Co Ltd
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Priority to CN201620779159.2U priority Critical patent/CN205945259U/en
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Publication of CN205945259U publication Critical patent/CN205945259U/en
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Abstract

The utility model provides a stator is towards the piece, the stator punching sheet comprises a punching sheet body, the hollow through -hole that be used for install the rotor of motor is had towards the piece body, on the internal surface of piece body, follow the stator has a plurality of stator tooths, each towards the circumference direction evenly distributed of piece the stator tooth is followed the stator extends towards the radial direction of piece, the stator tooth orientation the surface of through -hole department is the arc surface, just arc surface orientation is kept away from through -hole department is sunken. Back in the through -hole of mounting of rotors in the stator towards the piece, the stator tooth that has arc surface can increase the length of the air gap between stator core and the rotor, and then the effective gas length when increasing the motor operation for the air -gap flux density high frequency harmonic wave content of motor has certain reduction, and improve the efficiency of electromagnetic power conversion the improvement promptly motor, and then reduce the stator core loss, and the noise reduction. The utility model also provides a motor and stator core.

Description

Motor, stator core and its stator punching
Technical field
The utility model is related to motor device technical field, more particularly to a kind of motor, stator core and its stator punching Piece.
Background technology
With market development, invariable frequency compressor motor steps up for efficient requirement.From design of electrical motor angle For upper, the size of stator cogging torque will affect harmonic content and the core loss of air gap flux density.At present, single-phase fixed frequency electricity Lifting more than the improved efficiency amplitude of machine point substantially difficult to realize in the case of considering specification and cost, analytical plan is sent out Existing conventional single-phase determines frequency electric machine iron core, and air gap flux density harmonic content ratio is larger in determined circumstances, and teeth groove harmonic wave occupies mainly Factor, and then core loss and the noise of motor can be directly affected.
Utility model content
Based on this it is necessary to single-phase determine frequency electric machine iron core air gap flux density harmonic content in determined circumstances for current The larger problem of ratio, provides a kind of air gap flux density harmonic content that can reduce motor, the stator punching reducing iron loss, also simultaneously Provide a kind of stator core containing said stator punching, and the motor containing said stator iron core.
Above-mentioned purpose is achieved through the following technical solutions:
A kind of stator punching, including punching body, described punching body has the hollow of the rotor for installing motor Through hole;
On the inner surface of described punching body, the circumferential direction along described stator punching is evenly distributed with multiple stators Tooth, each described stator tooth extends along the radial direction of described stator punching;
Described stator tooth is curved surfaces towards the surface of described through hole, and described curved surfaces are directed away from described leading to It is recessed at hole.
Wherein in an embodiment, the arc radius of described curved surfaces are less than the radius of described rotor.
Wherein in an embodiment, described stator tooth has tooth crest and the tooth root with respect to the setting of described tooth crest Portion;
Described root portion is arranged away from described through hole near described through hole, described tooth crest;
Described curved surfaces are located at described root portion towards on the surface of described through hole;
Described root portion has first end and the second end with respect to described first end;
Described curved surfaces extend to described second end from described first end.
Wherein in an embodiment, the quantity of described curved surfaces is one, and described curved surfaces are with regard to described stator The axis of tooth is symmetrical.
Wherein in an embodiment, the arc radius of described curved surfaces are 0.35 times of the radius of described rotor~ 0.8 times.
Wherein in an embodiment, the surface that described root portion is located at described through hole is two continuous arc tables Face, the arc radius of two continuous described curved surfaces are equal;
And two continuously described curved surfaces symmetrical with regard to the axis of described stator tooth.
Wherein in an embodiment, the arc radius of described curved surfaces are 0.15 times of the radius of described rotor~ 0.35 times.
Wherein in an embodiment, each described stator tooth is respectively provided with curved surfaces.
Wherein in an embodiment, curved surfaces are partly arranged on described stator tooth;
And there is the described stator tooth of curved surfaces be symmetrical arranged with regard to the diameter line of described stator punching.
Wherein in an embodiment, arc transition between the outer peripheral face of described root portion and described curved surfaces.
Wherein in an embodiment, the radius of described circular arc is 0.05mm~0.5mm.
Further relate to a kind of stator core, by multiple stator punchings as described in any of the above-described technical characteristic stacking lamination Become.
Further relate to a kind of motor, the stator core including rotor and as described in above-mentioned technical characteristic;Described rotor is installed on In described stator core.
The beneficial effects of the utility model are:
Motor of the present utility model, stator core and its stator punching, structure design advantages of simple, by optimizing stator tooth End shape so that the end of stator tooth surface be curved surfaces.After rotor is installed in the through hole of stator punching, tool The stator tooth having curved surfaces can increase the length of the air gap between stator core and rotor, and then increases during motor operation Effective air gap length, so that the air gap flux density high-frequency harmonic content of motor has certain reduction, improves electromagnetic power conversion and carries The efficiency of high motor, and then reduce stator core loss, and reduce noise to a certain extent.Stator punching of the present utility model Make the curved surface in the end of stator tooth increase the length of air gap by the structure optimizing stator tooth, and then reduce loss With the purpose reducing harmonic content.
Brief description
Fig. 1 is the front view of the stator punching of the utility model one embodiment;
Fig. 2 is the partial enlarged drawing at the A shown in Fig. 1;
Fig. 3 is that stator punching of the present utility model carries out the schematic diagram of air gap flux density frequency analysis using finite element;
Fig. 4 is that current stator punching carries out the schematic diagram of air gap flux density frequency analysis using finite element;
Fig. 5 is the contrast that stator punching of the present utility model and current stator punching carry out core loss using finite element Schematic diagram;
Wherein:
100- stator punching;
110- punching body;
120- through hole;
130- stator tooth;
131- tooth crest;
132- root portion;
1321- curved surfaces;1322- first end;1323- second end;
133- tooth body.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, by the following examples, and tie Close accompanying drawing, motor of the present utility model, stator core and its stator punching are further elaborated.It should be appreciated that this The described specific embodiment in place only in order to explain the utility model, is not used to limit the utility model.
Referring to Fig. 1 to Fig. 2, the utility model provides a kind of stator punching 100, this stator punching 100 stack layer multiple Pressure energy enough forms stator core, and matches with rotor.Stator punching 100 of the present utility model passes through to optimize stator tooth 130 Structure can increase the gas length between stator core and rotor, and air gap flux density harmonic content is effectively ensured, and it is fixed then to reduce Sub- iron loss, improves electric efficiency.
In the utility model, stator punching 100 includes punching body 110, and punching body 110 has for installing motor The hollow of rotor through hole 120.On the inner surface of punching body 110, the circumferential direction along stator punching 100 is uniformly distributed There are multiple stator tooths 130, form a teeth groove between two adjacent stator tooths 130, each stator tooth 130 is along stator punching 100 radial direction extends.Stator tooth 130 is curved surfaces 1321 towards the surface at through hole 120, and curved surfaces 1321 court It is recessed to away from through hole 120.
That is, the surface of the end of stator tooth 130 is curved surfaces 1321, and the recess court of curved surfaces 1321 To through hole 120.So, after rotor is installed in the through hole 120 of stator punching 100, the central region of curved surfaces 1321 is to turning The distance between outer surface of son more than curved surfaces 1321 edge to rotor the distance between outer surface.There is arc table The stator tooth 130 in face 1321 can increase the gas length of stator punching 100 and rotor, and then increases air gap during motor operation Effective length, improves electromagnetic power and improves electric efficiency, reduce iron loss.
At present, the stator tooth of stator core is parallel teeth, and that is, the surface of the end of stator tooth and the outer surface of rotor are equal OK.In this case, air gap flux density harmonic content ratio is larger, and teeth groove harmonic wave occupies principal element, and then can directly affect electricity The core loss of machine and noise.Therefore, stator punching 100 of the present utility model passes through to optimize the shape of stator tooth 130 so that determining The surface of the end of sub- tooth 130 is curved surfaces 1321, and that is, the stator tooth 130 of stator punching 100 of the present utility model is arc Tooth.Gas length between stator punching 100 and rotor is increased by the stator tooth 130 with curved surfaces 1321, then Increase the air gap quantity of magnetism, improve electric efficiency.
Stator punching 100 of the present utility model passes through to optimize the shape of the end of stator tooth 130 so that stator tooth 130 The surface of end is curved surfaces 1321.After rotor is installed in the through hole 120 of stator punching 100, there are curved surfaces 1321 Stator tooth 130 can increase the length of the air gap between stator core and rotor, and then increase effective gas during motor operation Gap length, so that the air gap flux density high-frequency harmonic content of motor has certain reduction, improves electromagnetic power conversion and improves motor Efficiency, and then reduce stator core loss, and to a certain extent reduce noise.Stator punching 100 of the present utility model leads to The structure crossing optimization stator tooth 130 makes the curved surface in the end of stator tooth 130 1321 increase the length of air gap, and then reaches Reduce loss and the purpose reducing harmonic content.
As a kind of embodiment, the arc radius of curved surfaces 1321 are less than the radius of rotor.That is, arc The degree of crook on surface 1321 be more than rotor outer surface degree of crook, in such manner, it is possible to make stator tooth 130 end arrive turn The distance of outer surface of son changes, and increases air gap degree, then increases magnetic flux, improves electromagnetic conversion efficiency it is ensured that electricity Engine efficiency.
As a kind of embodiment, stator tooth 130 has tooth crest 131, the root portion with respect to tooth crest 131 setting 132 and the tooth body 133 that connects tooth crest 131 and root portion 132.Root portion 132 at through hole 120, tooth crest 131 away from Through hole 120 is arranged.Curved surfaces 1321 are located at root portion 132 towards on the surface at through hole 120.Further, root portion 132 There is first end 1322 and the second end 1323 with respect to first end 1322.Curved surfaces 1321 extend to from first end 1322 Two ends 1323.Stator punching 100 of the present utility model arranges curved surfaces 1321 on the root portion 132 of stator tooth 130, to increase Plus air gap effective length during motor operation, improve electromagnetic power conversion and improve electric efficiency.
The distance that first end 1322 arrives the outer surface of rotor is equal to the distance that the outer surface of rotor is arrived at the second end 1323, and The distance that first end 1322 arrives the outer surface of rotor is less than the central region of curved surfaces 1321 between the outer surface of rotor Distance, so can increase gas length, effectively reduce air gap flux density harmonic content, and then reduces iron loss.
Because stator punching 100 of the present utility model passes through the curved surfaces 1321 of the root portion 132 of stator tooth 130 to electricity Machine cogging torque has certain optimization function, to reduce high frequency time air gap flux density harmonic content.But it is considered to actual process and nail The slab organization of sub- punching, the lifting not arc with the curved surfaces 1321 of the root portion 132 of stator tooth 130 of electric efficiency Radius or hollow depth are always directly proportional.When the hollow depth of the curved surfaces 1321 of the root portion 132 of stator tooth 130 is excessive When, then the magnetic flux of stator tooth 130 can be led to reduce, affect electromagnetic conversion efficiency, also groove height can be diminished simultaneously, enter And lead to the technique of stator punching 100 to make structural damage increase.
Therefore, stator punching 100 of the present utility model increases still using former in order to avoid technique makes structural damage The height of the teeth groove of some stator punchings 100.And, the arc table on the stator tooth 130 of stator punching 100 of the present utility model The quantity in face 1321 can be one or two.It is described as follows:
In an embodiment of the present utility model, the quantity of curved surfaces 1321 is one, curved surfaces 1321 with regard to The axis of stator tooth 130 is symmetrical.So ensure that the curved surfaces 1321 of axis both sides arrive between the outer surface of rotor Distance equal, and then ensure gas length, effectively reduce air gap flux density harmonic content, and then reduce iron loss.Further, arc The arc radius on shape surface 1321 are 0.35 times~0.8 times of the radius of rotor.In such manner, it is possible to ensure the interior of curved surfaces 1321 Recessed degree, it is to avoid curved surfaces 1321 transition indent is it is ensured that the magnetic flux of stator tooth 130 is it is ensured that the efficiency of motor.
Stator punching 100 of the present utility model taking coordinate the rotor as 26mm for the radius as a example illustrates.That is, turning The radius of son is 26mm, and the arc radius of corresponding curved surfaces 1321 are 10mm~20mm, preferably 10mm~13mm.In this reality With, in a new embodiment, the quantity of the curved surfaces 1321 on stator tooth 130 on stator punching 100 is one, and arc The arc radius on shape surface 1321 are 10mm.So ensure that gas length, effectively reduce air gap flux density harmonic content, and then Reduce iron loss.
In other embodiment of the present utility model, the surface that root portion 132 is located at through hole 120 is continuous for two Curved surfaces 1321, the arc radius of two continuous curved surfaces 1321 are equal.And two continuous curved surfaces 1321 close Symmetrical in the axis of stator tooth 130.So ensure that axis both sides curved surfaces 1321 arrive rotor outer surface it Between distance equal, and then ensure gas length, effectively reduce air gap flux density harmonic content, and then reduce iron loss.Further, The arc radius of curved surfaces 1321 are 0.15 times~0.35 times of the radius of rotor.In such manner, it is possible to ensure curved surfaces 1321 Indent degree, it is to avoid curved surfaces 1321 transition indent is it is ensured that the magnetic flux of stator tooth 130 is it is ensured that the efficiency of motor.
And, the intersection of two curved surfaces 1321 tapers off to a point, the distance of the most advanced and sophisticated outer surface to rotor is more than the The distance of the outer surface of rotor is arrived at one end 1322 and the second end 1323.Stator punching 100 of the present utility model to coordinate radius is Illustrate as a example the rotor of 26mm.That is, the radius of rotor is 26mm, the arc radius of corresponding curved surfaces 1321 For 4mm~8mm, preferably 5mm.The arc on stator tooth 130 in another embodiment of the present utility model, on stator punching 100 The quantity on shape surface 1321 is two, and the arc radius of curved surfaces 1321 are 5mm.So ensure that gas length, Effectively reduce air gap flux density harmonic content, and then reduce iron loss.
It should be noted that the quantity of the curved surfaces 1321 of the stator tooth 130 of stator punching 100 of the present utility model is One or two when, can solve stator punching 100 of the present utility model air gap flux density harmonic content is larger and then shadow Ring iron loss and the problem of noise.Because each two curved surfaces 1321 are crossed to form tip, but, the quantity of curved surfaces 1321 During for three and more than three, most advanced and sophisticated quantity will increase, and can deteriorate cogging torque, and then increase air gap flux density harmonic wave contains Amount, the core loss of impact motor and noise.Therefore, the curved surfaces of the stator tooth 130 of stator punching 100 of the present utility model 1321 quantity is relatively low for ensure that air gap flux density harmonic content when one or two, and then ensures the iron loss of motor, fall Low noise.
As a kind of embodiment, each stator tooth 130 is respectively provided with curved surfaces 1321.That is, stator punching Curved surfaces 1321 are respectively provided with all of stator tooth 130 on piece 100, so ensure that the effective of air gap during motor operation Length, improves electromagnetic power conversion and improves electric efficiency, reduce core loss.
Certainly, in other embodiment of the present utility model, partial stator tooth 130 arranges curved surfaces 1321, and The stator tooth 130 with curved surfaces 1321 is symmetrical arranged with regard to the diameter line of stator punching 100.If that is, stator punching When piece 100 is 24 slot structure, wherein curved surfaces 1321 can be set on the stator tooth 130 of three or more, at these It is also provided with curved surfaces 1321, to ensure motor operation on the symmetrically arranged stator tooth 130 of stator tooth 130 of curved surfaces 1321 When air gap effective length, improve electromagnetic power conversion i.e. improve electric efficiency, reduce core loss.
As a kind of embodiment, arc transition between the outer peripheral face of root portion 132 and curved surfaces 1321.So energy Enough increase gas lengths to a certain extent, optimize the structure of teeth groove so that the torque of teeth groove reduces, and then reduce iron loss and subtract Few air gap flux density harmonic content.Further, the radius of circular arc is 0.05mm~0.5mm.
And, referring to Fig. 3 to Fig. 5, to the stator punching 100 with curved surfaces 1321 of the present utility model with current The stator punching with parallel teeth carries out finite element analysis, carries out air gap flux density harmonic wave finite element analysis respectively and core loss has The contrast of limit unit.Stator tooth 130 in note the application is arc-shaped gear, and current stator tooth is parallel rule.Contrast Fig. 3 and Fig. 4, permissible It is evident that stator punching 100 of the present utility model can reduce air gap flux density harmonic wave by curved surfaces 1321;From Fig. 5 It is apparent that stator punching 100 of the present utility model can reduce iron loss by curved surfaces 1321.
The utility model additionally provides a kind of stator core, by stator punching 100 stack layer in multiple above-described embodiments Pressure forms.Stator core of the present utility model ensures gas length by the stator punching 100 with curved surfaces 1321, fall Low air gap flux density harmonic content, reduces iron loss then.
The utility model additionally provides a kind of motor, and including the stator core in rotor and above-described embodiment, rotor is installed In stator core.Motor of the present utility model by stator core have the stator punching 100 of curved surfaces 1321 Ensure air gap effective length during motor operation, improve electromagnetic power conversion and improve electric efficiency, reduce core loss, reduce Noise.
Embodiment described above only have expressed several embodiments of the present utility model, and its description is more concrete and detailed, But therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that it is common for this area For technical staff, without departing from the concept of the premise utility, some deformation can also be made and improve, these all belong to In protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be defined by claims.

Claims (13)

1. a kind of stator punching is it is characterised in that include punching body(110), described punching body(110)Have for installing The through hole of the hollow of the rotor of motor(120);
In described punching body(110)Inner surface on, along described stator punching(100)Circumferential direction be evenly distributed with multiple Stator tooth(130), each described stator tooth(130)Along described stator punching(100)Radial direction extend;
Described stator tooth(130)Towards described through hole(120)The surface at place is curved surfaces(1321), and described curved surfaces (1321)It is directed away from described through hole(120)Place's depression.
2. stator punching according to claim 1 is it is characterised in that described curved surfaces(1321)Arc radius be less than The radius of described rotor.
3. stator punching according to claim 2 is it is characterised in that described stator tooth(130)There is tooth crest(131)And With respect to described tooth crest(131)The root portion of setting(132);
Described root portion(132)Near described through hole(120)Place, described tooth crest(131)Away from described through hole(120)Setting;
Described curved surfaces(1321)Positioned at described root portion(132)Towards described through hole(120)On the surface at place;
Described root portion(132)There is first end(1322)And with respect to described first end(1322)The second end(1323);
Described curved surfaces(1321)From described first end(1322)Extend to described second end(1323).
4. stator punching according to claim 3 is it is characterised in that described curved surfaces(1321)Quantity be one, Described curved surfaces(1321)With regard to described stator tooth(130)Axis symmetrical.
5. stator punching according to claim 4 is it is characterised in that described curved surfaces(1321)Arc radius be institute State rotor 0.35 times ~ 0.8 times of radius.
6. stator punching according to claim 3 is it is characterised in that described root portion(132)Positioned at described through hole(120) The surface at place is two continuous curved surfaces(1321), two continuous described curved surfaces(1321)Arc radius phase Deng;
And two continuous described curved surfaces(1321)With regard to described stator tooth(130)Axis symmetrical.
7. stator punching according to claim 6 is it is characterised in that described curved surfaces(1321)Arc radius be institute State rotor 0.15 times ~ 0.35 times of radius.
8. the stator punching according to any one of claim 4 to 7 is it is characterised in that each described stator tooth(130)Upper equal Setting curved surfaces(1321).
9. the stator punching according to any one of claim 4 to 7 is it is characterised in that partly described stator tooth(130)On set Put curved surfaces(1321);
And there are curved surfaces(1321)Described stator tooth(130)With regard to described stator punching(100)Diameter line symmetrically set Put.
10. stator punching according to claim 3 is it is characterised in that described root portion(132)Outer peripheral face and described arc Shape surface(1321)Between arc transition.
11. stator punchings according to claim 10 are it is characterised in that the radius of described circular arc is 0.05mm ~ 0.5mm.
A kind of 12. stator cores are it is characterised in that stator punching as described in multiple any one as claim 1 to 10(100) Stacking lamination forms.
A kind of 13. motors are it is characterised in that include rotor and the stator core as described in any one of claim 12;Described turn Son is installed in described stator core.
CN201620779159.2U 2016-07-21 2016-07-21 Motor, stator core and stator is towards piece thereof Active CN205945259U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620779159.2U CN205945259U (en) 2016-07-21 2016-07-21 Motor, stator core and stator is towards piece thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620779159.2U CN205945259U (en) 2016-07-21 2016-07-21 Motor, stator core and stator is towards piece thereof

Publications (1)

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CN205945259U true CN205945259U (en) 2017-02-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106130204A (en) * 2016-07-21 2016-11-16 珠海凌达压缩机有限公司 Motor, stator core and stator punching thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106130204A (en) * 2016-07-21 2016-11-16 珠海凌达压缩机有限公司 Motor, stator core and stator punching thereof

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