CN104682649A - Motor and excitation part thereof - Google Patents
Motor and excitation part thereof Download PDFInfo
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- CN104682649A CN104682649A CN201510072771.6A CN201510072771A CN104682649A CN 104682649 A CN104682649 A CN 104682649A CN 201510072771 A CN201510072771 A CN 201510072771A CN 104682649 A CN104682649 A CN 104682649A
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- salient pole
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- main salient
- stator
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Abstract
The invention relates to a motor and an excitation part thereof. The motor comprises a stator and a rotor, wherein the stator comprises a stator iron core, the stator iron core comprises n main salient pole yokes, n auxiliary pole yokes, n main salient poles and n auxiliary poles, the main salient pole yokes and the auxiliary pole yokes are alternately arranged along the periphery, the main salient poles and the auxiliary poles respectively extend inwards from the main salient pole yokes and the auxiliary pole yokes, excitation windings are respectively wound on the main salient poles, and the stator iron core and the excitation windings form an excitation part of the motor; after the motor is electrified, main excitation poles are respectively formed at the parts of the main salient poles, and auxiliary excitation poles are respectively formed at the parts of the auxiliary poles; the rotor comprises a rotor iron core and an armature winding wound on the rotor iron core, the rotor iron core and the armature winding form an armature part of the motor, and the ratio of the outer diameter of the rotor to the outer minimum size of the stator iron core is larger than 7:10. Compared with the traditional universal motor, the motor has the advantages that the magnetic circuit is improved; under the condition of obtaining the same output power, the material consumption of the excitation windings and the iron cores of the motor can be reduced, so that the cost can be greatly reduced.
Description
Technical field
The invention belongs to machine field, particularly relate to a kind of excitation part of general-purpose machine.
Background technology
Motor generally includes two parts, a part is called as excitation part and another part is called as armature portion, and excitation part is for generation of active magnetic field, and armature portion is used for being coupled into row electromechanical energy with excitation part and transforms, when motor is motor, armature portion output mechanical energy; When motor is generator, armature portion exports electric energy.
Single-phase series motor also claims general-purpose machine, and being the monophase machine of armature winding through brush and stator excitation windings in series of band commutator, is type the most frequently used in AC commutator machine.This kind of motor is because rotating speed is high, volume is little, lightweight, detent torque is large, speed governing is convenient, there is series excitation characteristic, be usually used in the driving that medicine equipment, electric tool, household appliance etc. need high speed, little, the lightweight small-power apparatus of volume, as: agitator for food-making, dust catcher, domestic sewing machine, electric drill, electric mill and other portable electric tools.
As shown in Figure 1A and Figure 1B, the bilateral single-phase series motor that existing industry is commonly used adopts two excitation winding to be wound on two salient poles respectively usually, each excitation winding forms main pole at corresponding salient pole place, and the polarity of two main poles is contrary, two main poles form magnetic loop by the yoke portion on stator core both sides, the air gap between two main poles and rotor, armature rotor.Like this, two excitation winding form two main poles altogether, and magnetic circuit runs through the cross section of whole stator core, and magnetic circuit is longer.
Therefore, a kind of novel universal motor optimizing magnetic circuit of exploitation is needed badly.
Summary of the invention
In order to solve the problems of the technologies described above, a kind of motor, comprise stator and be installed in the rotor in stator, described stator comprises stator core and is set around the excitation winding in stator core, described stator core and excitation winding form the excitation part of motor, described rotor comprises rotor core and is wound in the armature winding in rotor core, rotor core and armature winding form the armature portion of motor, armature winding is electrically connected with excitation winding by commutator and brush, it is characterized in that: described stator core comprises n the main salient pole yoke portion and n interpole yoke portion that are arranged alternately along its circumference, be located at n main salient pole and n the interpole in main salient pole yoke portion and interpole yoke portion respectively, described n main salient pole is tied with excitation winding one to one respectively, the identical main field pole of n polarity can be formed respectively in described n main salient pole place after excitation winding energising, n and the opposite polarity auxiliary magnetic pole of main field pole is formed respectively in described n interpole place, wherein n be greater than 1 positive integer.
The present invention further improves and is: the ratio of described rotor diameter and the outside minimum dimension of stator core is greater than 7:10.
The present invention further improves and is: described auxiliary magnetic pole is induction magnetic pole, and the width in described main salient pole yoke portion is less than the width in interpole yoke portion.
The present invention further improves and is: described interpole yoke portion is provided with installing hole so that mounted motor end cap.
The present invention further improves and is: each main salient pole comprises the neck radially extended internally from yoke portion, the bipolar shoe extended from neck along periphery of rotor, and the face that bipolar shoe is relative with rotor forms continuous print polar arc.
The present invention also provides a kind of motor excitation part, comprise excitation winding that is unshakable in one's determination and that be set around on iron core, described iron core comprises the main salient pole yoke portion and interpole yoke portion, n the main salient pole being located at main salient pole yoke portion and interpole yoke portion respectively and n interpole that are arranged alternately along its circumference, described excitation winding is wound on described main salient pole respectively, the identical main field pole of polarity can be formed in described main salient pole place after energising, form induction magnetic pole in described interpole place.
The present invention further improves and is: each main salient pole comprises the neck radially extended internally from stator yoke, be formed at the bipolar shoe of neck finish, bipolar shoe forms continuous print polar arc, and the ratio of described polar arc place diameter of a circle and the outside minimum dimension of stator core is greater than 7:10.
The beneficial effect that illustrated embodiment of the present invention has is: can form magnetic loop between adjacent main magnetic pole and auxiliary magnetic pole after excitation winding energising, compared to traditional general-purpose machine, magnetic circuit improves, when obtaining identical power output, motor of the present invention can reduce excitation winding and material consumption unshakable in one's determination, thus can be greatly cost-saving.
Accompanying drawing explanation
Figure 1A is depicted as the end view of motor along vertical axis direction of a prior art;
Figure 1B is depicted as the Distribution of Magnetic Field schematic diagram of the motor of Figure 1A;
Fig. 2 A is depicted as motor that one embodiment of the invention the provides end view along vertical axis direction;
Fig. 2 B is depicted as the Distribution of Magnetic Field schematic diagram of the motor of Fig. 2 A;
Figure 3 shows that motor that another embodiment of the present invention the provides end view along vertical axis direction;
Figure 4 shows that motor that yet another embodiment of the invention the provides end view along vertical axis direction.
Embodiment
In order to make technical problem to be solved of the present invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Motor of the present invention, comprise stator and be installed in the rotor in stator, described stator comprises stator core and is set around the excitation winding in stator core, described stator core and excitation winding form the excitation part of motor, described rotor comprises rotor core and is wound in the armature winding in rotor core, rotor core and armature winding form the armature portion of motor, armature winding is electrically connected with excitation winding by commutator and brush, described stator core comprises n the main salient pole yoke portion and n interpole yoke portion that are arranged alternately along its circumference, be located at n main salient pole and n the interpole in main salient pole yoke portion and interpole yoke portion respectively, described n main salient pole is tied with excitation winding one to one respectively, the identical main field pole of n polarity can be formed respectively in described n main salient pole place after excitation winding energising, n and the opposite polarity auxiliary magnetic pole of main field pole is formed respectively in described n interpole place, wherein n be greater than 1 positive integer.
Particularly, refer to Fig. 2 A, the single-phase 4 pole series machines that one embodiment of the invention provides comprise stator 10 and rotor 50.Described stator 10 comprises stator core 20 and excitation winding 30, described stator core 20 is formed along rotor axial is stacking by most laminations, comprise two the main salient pole yoke portions 22 and two interpole yoke portions 24, two the main salient poles 26 extended internally from main salient pole yoke portion 22 and interpole yoke portion 24 respectively and two auxiliary salient poles 28 that are arranged alternately along its circumference, described main salient pole 26 and auxiliary salient pole 28 are alternately distributed the outside of the iron core in rotor 50 along rotor 50 circumference, described excitation winding 30 is wound on described main salient pole 26 respectively, and auxiliary salient pole 28 does not twine excitation winding.
The external diameter of described rotor 50 is D, and the minimum dimension of described stator 10 outside is that Y, D and Y meet following relation: D/Y>7:10.In the present invention, the external diameter of described rotor 50 refers to the external diameter of rotor core, and the minimum dimension of so-called stator 10 outside refers to the size by the distance reckling in the line of 2, the connecting stator neighboring of stator center.
Refer to Fig. 2 B, field pole can be formed at main salient pole 26 place after described excitation winding 30 is energized, and two main salient pole 26 places formed the polarity of field poles identical (as radially field pole the arctic all outwardly or all inwardly), the magnetic line of force forms loop between each main pole, stator yoke, two adjacent auxiliary magnetic poles, air gap between two adjacent auxiliary magnetic poles and rotor, rotor, air gap between rotor and main pole.Like this, the excitation winding 30 be wound on described two main salient poles 26 can form the identical field pole of two polarity in main salient pole place, forms two induction magnetic poles, form 4 magnetic poles altogether in auxiliary salient pole 28 place.
In embodiments of the present invention, described stator core is bilateral structure, and stator yoke is for closing frame-shaped construction.Each salient pole 26,28 comprises the neck radially extended internally from stator yoke, the bipolar shoe extended from neck along periphery of rotor, and bipolar shoe forms continuous print polar arc away from the surface of yoke portion (relative with rotor), is centered around rotor 50 outside unshakable in one's determination.The width in described main salient pole yoke portion 22 is less than the width in interpole yoke portion 24, distance between the end 26a of described main salient pole 26 pole shoe and stator yoke is greater than the distance between the end 28a of described auxiliary salient pole 28 pole shoe and stator yoke, like this, larger receiving space can be formed, to hold excitation winding 30 between described main salient pole 26 pole shoe and main salient pole yoke portion 22.Understandably, alleged circumference and radial direction are sensu lato circumference and radial direction herein, and not for circle or cylindrical structural, e.g., the stator yoke in the embodiment of the present invention can be square or circular.In the present embodiment, the outer diameter D of described rotor 50 is slightly less than the polar arc place diameter of a circle of stator salient poles 26,28, and therefore, the polar arc place diameter of a circle of stator salient poles 26,28 and the minimum dimension of stator 10 outside are than being also greater than 7:10.Understandably, the gap between main salient pole 26 and rotor core can equal or be not equal to the gap between auxiliary salient pole 28 and rotor core, and when aforementioned two gaps are unequal, the polar arc place circle of stator salient poles 26,28 refers to the diameter of a circle that diameter is less.
Described rotor 50 comprises rotor core and is wound in the armature winding (not shown) on iron core, and rotor core and armature winding form the armature portion of motor.Described rotor core comprises some rotor tooths 52, and the number of rotor tooth 52 is greater than the number sum of the main salient pole 26 of stator and interpole 28.Described armature winding is electrically connected with the excitation winding 30 on stator 10 by commutator (not shown) and brush (not shown), after energising, excitation winding 30 produces magnetic field, magnetic field through rotor 50, drives rotor 50 to rotate under the magnetic fields that the armature rotor winding of energising produces in excitation winding 30.
Understandably, interpole in the present invention, except can be except salient pole, it can also be non-salient pole, during for salient pole, can also around a small amount of excitation winding on it, the number of turn is less than the number of turn of the excitation winding on main salient pole, the magnetic field that the excitation winding after energising on main salient pole is contrary with the excitation winding polarization on auxiliary salient pole.Described interpole yoke portion can establish installing hole (as shown in Figure 2) so that mounted motor end cap.
Motor of the present invention, forms magnetic loop between adjacent main magnetic pole and auxiliary magnetic pole, compared to traditional general-purpose machine, magnetic circuit improves, when obtaining identical power output, motor of the present invention can reduce excitation winding and material consumption unshakable in one's determination, thus can be greatly cost-saving.The external diameter of described rotor and the minimum dimension of described stator exterior are greater than 7:10, when stator outer diameter is certain, rotor can be made to accomplish power output that is large as far as possible thus increase motor.
Refer to Fig. 3 to Fig. 4, understandably, motor of the present invention can adopt that 3 excitation winding form 6 magnetic poles, 4 excitation winding form 8 magnetic poles, a n excitation winding forms 2n magnetic pole, wherein n be greater than 1 positive integer.Understandably, the difformities such as the profile of the stator yoke of described motor can be circle, square.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a motor, comprise stator and be installed in the rotor in stator, described stator comprises stator core and is set around the excitation winding in stator core, described stator core and excitation winding form the excitation part of motor, described rotor comprises rotor core and is wound in the armature winding in rotor core, rotor core and armature winding form the armature portion of motor, armature winding is electrically connected with excitation winding by commutator and brush, it is characterized in that: described stator core comprises n the main salient pole yoke portion and n interpole yoke portion that are arranged alternately along its circumference, be located at n main salient pole and n the interpole in main salient pole yoke portion and interpole yoke portion respectively, described n main salient pole is tied with excitation winding one to one respectively, the identical main field pole of n polarity can be formed respectively in described n main salient pole place after excitation winding energising, n and the opposite polarity auxiliary magnetic pole of main field pole is formed respectively in described n interpole place, wherein n be greater than 1 positive integer.
2. motor as claimed in claim 1, is characterized in that: the ratio of described rotor diameter and the outside minimum dimension of stator core is greater than 7:10.
3. motor as claimed in claim 1 or 2, is characterized in that: described auxiliary magnetic pole is induction magnetic pole, and the width in described main salient pole yoke portion is less than the width in interpole yoke portion.
4. motor as claimed in claim 1 or 2, is characterized in that: each main salient pole and interpole all comprise a polar arc extended along periphery of rotor.
5. motor as claimed in claim 3, is characterized in that: described interpole yoke portion is provided with installing hole so that mounted motor end cap.
6. motor as claimed in claim 1, is characterized in that: each main salient pole comprises the neck radially extended internally from main salient pole yoke portion, the bipolar shoe extended from neck along periphery of rotor, and the face that bipolar shoe is relative with rotor forms continuous print polar arc.
7. motor as claimed in claim 1 or 2, is characterized in that: described auxiliary very salient pole.
8. motor as claimed in claim 6, it is characterized in that: described interpole is wound with excitation winding, its number of turn is less than the number of turn of excitation winding on main salient pole.
9. motor as claimed in claim 1 or 2, is characterized in that: n equals 2,3 or 4.
10. a motor excitation part, comprise excitation winding that is unshakable in one's determination and that be set around on iron core, it is characterized in that: described iron core comprises the main salient pole yoke portion and interpole yoke portion, n the main salient pole being located at main salient pole yoke portion and interpole yoke portion respectively and n interpole that are arranged alternately along its circumference, described excitation winding is wound on described main salient pole respectively, the identical main field pole of polarity can be formed in described main salient pole place after energising, form induction magnetic pole in described interpole place.
11. motor excitation parts as claimed in claim 10, it is characterized in that: each main salient pole comprises the neck radially extended internally from stator yoke, be formed at the bipolar shoe of neck finish, bipolar shoe forms continuous print polar arc, and the ratio of described polar arc place diameter of a circle and the outside minimum dimension of stator core is greater than 7:10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072771.6A CN104682649B (en) | 2009-06-01 | 2009-06-01 | Motor and its excitation part |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072771.6A CN104682649B (en) | 2009-06-01 | 2009-06-01 | Motor and its excitation part |
| CN 200910148933 CN101764440A (en) | 2008-12-24 | 2009-06-01 | motor and motor stator |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910148933 Division CN101764440A (en) | 2008-12-24 | 2009-06-01 | motor and motor stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104682649A true CN104682649A (en) | 2015-06-03 |
| CN104682649B CN104682649B (en) | 2018-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510072771.6A Active CN104682649B (en) | 2009-06-01 | 2009-06-01 | Motor and its excitation part |
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| Country | Link |
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| CN (1) | CN104682649B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921272A (en) * | 2015-12-25 | 2017-07-04 | 德昌电机(深圳)有限公司 | Electric machine |
| CN108023438A (en) * | 2016-10-28 | 2018-05-11 | 上海思源高压开关有限公司 | A kind of electric operating mechanism using New-type electric machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3909647A (en) * | 1973-06-22 | 1975-09-30 | Bendix Corp | Rotor assembly for permanent magnet generator |
| US3942055A (en) * | 1974-10-16 | 1976-03-02 | General Electric Company | Hermetic motor stator |
| CN1050798A (en) * | 1990-10-16 | 1991-04-17 | 崔宝林 | Excited induction motor |
| US5045742A (en) * | 1990-02-23 | 1991-09-03 | General Electric Company | Electric motor with optimum core dimensions |
| CN1738166A (en) * | 2004-08-17 | 2006-02-22 | 山洋电气株式会社 | Permanent magnet rotary motor |
| US20060208606A1 (en) * | 2003-01-31 | 2006-09-21 | Hirzel Andrew D | Efficient high-speed electric device using low-loss materials |
| CN101895158A (en) * | 2009-05-22 | 2010-11-24 | 德昌电机(深圳)有限公司 | Motor |
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2009
- 2009-06-01 CN CN201510072771.6A patent/CN104682649B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3909647A (en) * | 1973-06-22 | 1975-09-30 | Bendix Corp | Rotor assembly for permanent magnet generator |
| US3942055A (en) * | 1974-10-16 | 1976-03-02 | General Electric Company | Hermetic motor stator |
| US5045742A (en) * | 1990-02-23 | 1991-09-03 | General Electric Company | Electric motor with optimum core dimensions |
| CN1050798A (en) * | 1990-10-16 | 1991-04-17 | 崔宝林 | Excited induction motor |
| US20060208606A1 (en) * | 2003-01-31 | 2006-09-21 | Hirzel Andrew D | Efficient high-speed electric device using low-loss materials |
| CN1738166A (en) * | 2004-08-17 | 2006-02-22 | 山洋电气株式会社 | Permanent magnet rotary motor |
| CN101895158A (en) * | 2009-05-22 | 2010-11-24 | 德昌电机(深圳)有限公司 | Motor |
Non-Patent Citations (1)
| Title |
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| 程周: "《电机与电气控制》", 31 March 2009 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921272A (en) * | 2015-12-25 | 2017-07-04 | 德昌电机(深圳)有限公司 | Electric machine |
| CN108023438A (en) * | 2016-10-28 | 2018-05-11 | 上海思源高压开关有限公司 | A kind of electric operating mechanism using New-type electric machine |
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| Publication number | Publication date |
|---|---|
| CN104682649B (en) | 2018-07-03 |
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