CN107565784A - Monophase machine and its rotor - Google Patents
Monophase machine and its rotor Download PDFInfo
- Publication number
- CN107565784A CN107565784A CN201610518353.XA CN201610518353A CN107565784A CN 107565784 A CN107565784 A CN 107565784A CN 201610518353 A CN201610518353 A CN 201610518353A CN 107565784 A CN107565784 A CN 107565784A
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- China
- Prior art keywords
- magnet
- rotor
- magnetic core
- monophase machine
- groove
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
A kind of monophase machine, including excitation part and armature portion, the excitation division point include N number of magnet, N number of magnet causes the excitation part to form 2N magnetic pole, the armature portion includes 2N teeth portion, and the 2N teeth portion forms 2N pole portion, and the N is the integer more than 1.The present invention also provides a kind of rotor for above-mentioned monophase machine.Using the present invention, magnet can be made full use of, reduces the quantity and assembly working of permanent magnetic iron in monophase machine, saves motor production cost.
Description
【Technical field】
The present invention relates to technical field of motors, more particularly to a kind of electric machine.
【Background technology】
Common electric machine in the market, in the p-m rotor that it is used, the number of permanent magnetic iron is equal to
The number of magnetic poles of rotor, adjacent magnets towards stator side opposite polarity and be collectively forming magnetic loop.Using this magnet quantity
More p-m rotor, magnet is often using insufficient, in addition, assembling can also become complicated, is unfavorable for saving production cost.
Therefore, it is necessary to existing electric machine is improved, effectively to reduce being produced into for electric machine
This.
【The content of the invention】
The purpose of the present invention is to reduce the production cost of electric machine.Therefore, the present invention provides a kind of monophase machine,
Including excitation part and armature portion, the excitation division point includes N number of magnet, and N number of magnet causes excitation part shape
Into 2N magnetic pole, the armature portion includes 2N teeth portion, and the 2N teeth portion forms 2N pole portion, and the N is whole more than 1
Number.
Preferably, the armature portion also includes 2N coil, and the coil is correspondingly wrapped in the 2N teeth portion.
Preferably, the armature portion includes a stator, and the excitation division point includes one turn of relatively described stator rotation
Son, the stator include the 2N teeth portion protruded out towards the rotor.
Preferably, the rotor is durface mounted permanent magnet rotor, including a magnetic core, N number of magnet are evenly spaced apart to set
In in the peripheral surface of the magnetic core.
Preferably, the magnetic core surface offers N number of evenly spaced groove, and N number of magnet is correspondingly installed on the groove
In.
Preferably, the groove is deep-slotted chip breaker or planar slot, and the magnet is tile magnet, the outer peripheral edge position of the magnet
In on the circular arc using rotor axis as the center of circle.
Preferably, the groove is deep-slotted chip breaker or planar slot, and the magnet is tile magnet, the outer surface of each magnet
Distance to rotor axis is gradually reduced from its circumferential center toward circumferential both sides.
Preferably, the side that N number of magnet presses close to magnetic core has identical polarity.
Preferably, the rotor is embedded p-m rotor, including a magnetic core, N number of magnet are evenly spaced apart to install
In the magnetic core.
Preferably, it is evenly spaced apart to have opened up N bar grooves in the magnetic core, for accommodating N number of magnet, each groove
After magnet is contained, space is left between the both ends of groove and magnet, 2N plane has been cut out on the rotor surface, it is each
The space at the both ends of the groove is respectively adjacent to wherein two planes.
Preferably, the side of N number of magnet towards the stator has identical polarity.
The present invention also provides a kind of monophase machine rotor, and the rotor includes a magnetic core and installation or is attached at the magnetic
N number of magnet of core, N number of magnet cause the rotor to form 2N magnetic pole, and the N is the integer more than 1.
Preferably, N number of magnet is evenly spaced apart to be installed in the peripheral surface of the magnetic core.
Preferably, the outer surface of each magnet to the distance of rotor axis gradually subtracts from its circumferential center toward circumferential both sides
It is small.
Preferably, the side that N number of magnet presses close to magnetic core has identical polarity.
Preferably, N number of magnet is evenly spaced apart embedded be installed in the magnetic core.
Preferably, it is evenly spaced apart to have opened up N bar grooves in the magnetic core, for accommodating N number of magnet, each groove
After magnet is contained, space is left between the both ends of groove and magnet, 2N plane has been cut out on the rotor surface, it is each
The space at the both ends of the groove is respectively adjacent to wherein two planes.
Preferably, the side of N number of magnet towards the stator has identical polarity.
Implement the present invention, the quantity of the permanent magnetic iron used in electric machine can be reduced, be advantageous to motor assembling and
Save motor production cost.
【Brief description of the drawings】
Below in conjunction with Figure of description and embodiment, the invention will be further described.
Fig. 1 is the schematic cross-section of the single-phase brushless direct-current motor of an embodiment of the present invention；
Fig. 2 is the Distribution of Magnetic Field schematic diagram of single-phase brushless direct-current motor shown in Fig. 1；
Fig. 3 is the counter electromotive force and cogging torque and rotor rotation time relation of single-phase brushless direct-current motor shown in Fig. 1
Schematic diagram；
Fig. 4 is the schematic cross-section of the single-phase brushless direct-current motor of another embodiment of the present invention；
Fig. 5 is the schematic cross-section of the single-phase brushless direct-current motor of third embodiment of the invention；
Fig. 6 is the Distribution of Magnetic Field schematic diagram of single-phase brushless direct-current motor shown in Fig. 5；
Fig. 7 is the counter electromotive force and cogging torque and rotor rotation time relation of single-phase brushless direct-current motor shown in Fig. 5
Schematic diagram；
Fig. 8 is the schematic cross-section of the single-phase brushless direct-current motor of four embodiment of the invention.
【Embodiment】
The various embodiments of the present invention will be described with reference to the drawings.It is appreciated that accompanying drawing is only to provide with reference to saying
Bright use, not it is used for being any limitation as the present invention.The size shown in accompanying drawing be only for ease of clear description, and and it is unlimited
Certainty ratio relation or the explanation that exhaustive is carried out to the present invention, nor limiting the scope of the present invention.Unless otherwise fixed
Justice, what all of technologies and scientific terms used here by the article was generally understood that with belonging to the those skilled in the art of the present invention
Implication is identical.
Refer to shown in Fig. 1, be the schematic cross-section for the single-phase brushless direct-current motor that one embodiment of the invention provides.It is described
Motor 1 includes armature portion and excitation part.Armature portion includes a stator 11, and excitation division point includes relative stator rotation
Rotor 12.Stator 11 includes some teeth portion 111 protruded out evenly and at intervals towards rotor 12, and some teeth portion 111 form some
Pole portion.Coil (not shown) is wrapped in all or part of teeth portion 111.The rotor 12 is durface mounted permanent magnet rotor
(Surface mounted Permanent Magnet Rotor), including magnetic core 121 and attach or be installed on outside magnetic core 121
Some permanent magnetic irons 122 on week.The magnetic core 121 is made up of permeability magnetic material, such as silicon steel sheet.The quantity of the magnet 122
For the half of the quantity of teeth portion 111.The side that the magnet 122 is attached or is installed on magnetic core 121 has identical polarity, i.e., same
For the arctic or it is all the South Pole.In the embodiment shown in fig. 1, the stator 11 includes the yoke portion 110 of annular and by yoke portion 110
Side forms 6 pole portion towards 6 teeth portion, 111,6 teeth portion 111 that rotor intervals equably protrude out.6 teeth portion 111 can
With whole coilings, coiling can also be spaced, i.e. only 3 coilings of teeth portion 111, the teeth portion 111 of coiling and the teeth portion 111 of non-coiling
It is arranged at intervals.The quantity of the magnet 122 is 3.The rotor magnetic core 121 is cylindric, on the excircle of rotor magnetic core 121
Multiple grooves of the same size 1211 are opened up evenly and at intervals, and the groove 1211 is through to the other end from the one end of rotor magnetic core 121, cuts
Face is into arcuation, and the center of circle of circle is located on the axial line of magnetic core 121 where the groove 1211 of the arcuation.The magnet 122 is distinguished
Paste or in the groove 1211.In another embodiment, on the excircle of the rotor magnetic core 121 evenly and at intervals
Multiple planes are cut out, magnet 122 is pasted or installed on the plane.Implement into tile in one kind in the section of magnet 122
In mode, the outer peripheral edge of the magnet 122 is located at using the axle center of rotor 12 as on the circular arc in the center of circle.In another embodiment,
Thick compared with both ends among the magnet 122, i.e., the outer surface of each magnet 122 is past from its circumferential center to the distance of rotor axis
Circumferential both sides are gradually reduced.Therefore the air gap between the both ends of magnet 122 and stator teeth 111 is compared with the middle part of magnet 122 and stator tooth
Air gap between portion 111 is big, makes the waveform of caused cogging torque in the operating of motor 1 closer to sinusoidal waveform, such as Fig. 3 institutes
Show, so that motor 1 operates steadily, reduces noise, improve performance and the life-span of motor 1.
Referring to Fig. 2, each permanent magnetic iron 122, the magnetic line of force are sent from its arctic, two-way is divided to return to south after passing through stator 11
Pole, so as to form two magnetic loops.Therefore, 3 permanent magnetic irons 122 form 6 magnetic poles, and are only wrapped in each magnetic loop
Containing a magnet, reach and make full use of each magnet, reduce motor component and cost-effective purpose.
It is above-mentioned only to describe the example for forming 6 magnetic pole durface mounted permanent magnet rotors in motor using 3 magnet, certainly in other realities
Apply in example, the quantity N (N is the integer more than 1) of magnet can be changed, the 2N pole portion arranged in pairs or groups on stator, just can be formed has
The durface mounted permanent magnet rotor of 2N magnetic pole.
Fig. 4 is the durface mounted permanent magnet rotor and the example of stator tooth part coiling that 4 magnetic poles are formed using 2 magnet.Fig. 4
In, the stator 21 of motor 2 includes the yoke portion 210 of the generally rectangular shaped ring in section and 4 protruded out by yoke portion 210 towards rotor 22
211,4 teeth portion 211 of teeth portion form 4 pole portion.The teeth portion 211 is spaced coiling, i.e., in only 2 relative teeth portion 211 around
There is coil 212.The rotor 22 has symmetrically opened up the groove 2211 of two arcs of the same size on the periphery of its magnetic core 221,
Permanent magnetic iron 222 is i.e. corresponding to be pasted or is installed in deep-slotted chip breaker 2211.Each magnet 222, the magnetic line of force is divided into two from the arctic
The South Pole is returned to by teeth portion 211 behind road, forms 4 magnetic poles.
Refer to shown in Fig. 5, be the schematic cross-section of the single-phase brushless direct-current motor provided in another embodiment of the present invention.
The motor 3 includes armature portion and excitation part.The armature portion includes a stator 31, and the excitation division point includes a phase
The rotor 32 rotated to stator 31.Stator 31 includes some teeth portion 311, Ruo Ganchi protruded out evenly and at intervals towards rotor 32
Portion 311 forms some pole portions.Coil (not shown) is wrapped in all or part of teeth portion 311.The rotor 32 is insertion
It is some in formula p-m rotor (Insert Permanent Magnet Rotor), including magnetic core 321 and embedded magnetic core 321
Permanent magnetic iron 322.The quantity of the magnet 322 is the half of the quantity of teeth portion 311.The magnet 322 is close to the stator 31
Side has identical polarity, that is, is all the arctic or is all the South Pole.In the embodiment shown in fig. 5, the stator 31 includes yoke portion
310 and form 4 poles towards 4 teeth portion, 311,4 teeth portion 311 that rotor 32 protrudes out evenly and at intervals by the inner side of yoke portion 310
Portion.4 teeth portion 311 can whole coilings, coiling can also be spaced, i.e. only 2 coilings of teeth portion 311, the teeth portion of coiling
311 are arranged at intervals with the teeth portion 311 of non-coiling.The quantity of the magnet 322 is 2, and around the axial line of the magnetic core 321
It is embedded in evenly and at intervals in magnetic core 321.Specifically, in the embodiment shown in fig. 5, the magnetic core 321 of the rotor 32 is around its axle
Heart line has opened up two bar grooves 323 evenly and at intervals.Magnet 322 is respectively embedded in groove 323, and is left at the both ends of groove 323
Space 3231.The magnetic core 321 of the rotor is cylindric, and its outline is arc-shaped curved surface 326, and the magnetic core 321 of the rotor exists
Cut out multiple planes 324 on its outline, each plane 324 close to the space 3231 of the wherein one end of a groove 323, with
Reduce magnetic leakage.In the embodiment illustrated in figure 5, the space 3231 of 4 ends of corresponding 2 grooves 323, the quantity of the plane 324
For 4, it is uniformly distributed on the periphery of rotor 32.In addition, also opened up in the both sides of each plane 324 on the periphery of rotor 32
Deep-slotted chip breaker 325, each deep-slotted chip breaker 325 connects adjacent plane 324 and arc-shaped curved surface 326, to reduce magnetic leakage.Shown in Fig. 5
Embodiment in, cut out plane 324 and open up deep-slotted chip breaker 325 and increase between the corresponding position of magnetic core 321 and stator teeth 311
Air gap, make motor 3 operate in caused cogging torque waveform closer to sinusoidal waveform, as shown in fig. 7, so that motor 3 is transported
Row is steady, reduces noise, improves performance and the life-span of motor 3.
Referring to Fig. 6, each permanent magnetic iron 322, the magnetic line of force divides two-way to return to south after passing through stator 31 from its arctic
Pole, so as to form two magnetic loops.Therefore, 2 permanent magnetic irons 322 form 4 magnetic poles, and are only wrapped in each magnetic loop
Containing a magnet, reach and make full use of each magnet, reduce motor component and cost-effective purpose.
Referring to Fig. 8, in the embodiment shown in fig. 8, the stator 41 of the motor 4 includes the generally rectangular shaped ring in section
Yoke portion 410 and 4 teeth portion, 411,4 formation of the teeth portion 411 4 pole portions protruded out by yoke portion 410 towards rotor 42, the teeth portion
411 are spaced coilings, i.e., have coil 412 in only 2 relative teeth portion 411.The rotor 42 is the embedded of embedded 2 magnet
P-m rotor, arrange in pairs or groups stator 41 on 4 pole portion after, formed 4 magnetic pole p-m rotors.
It is above-mentioned only to describe the example for forming the embedded p-m rotor of 4 magnetic poles in monophase machine using 2 magnet, in other realities
Apply in mode, the quantity N (N is the integer more than 1) of magnet can be changed, the 2N pole portion arranged in pairs or groups on stator, formation has 2N
The embedded p-m rotor of magnetic pole.
N magnet is only described above and forms situation of the 2N magnetic poles on inner rotor motor, so it can be appreciated that utilizing N magnetic
Iron, which forms 2N magnetic poles, to be applied on external rotor electric machine, in this case, for durface mounted permanent magnet rotor, N magnet
It is to attach or be installed on rotor magnetic core inner surface.For embedded p-m rotor, N magnet is built-in in rotor magnetic core
Portion.
In other embodiments, the monophase machine can also be the electric machines such as single-phase permanent alternating current generator.
In summary, monophase machine of the invention, using the N number of permanent magnetic iron being arranged on rotor, stator of arranging in pairs or groups
On 2N pole portion, 2N magnetic pole can be formed on rotor, had both reduced magnet quantity, and can makes full use of each magnet, subtracted
Lack the workload of motor assembling, save motor production cost.
For the person of ordinary skill of the art, without departing from the inventive concept of the premise, if can also make
Dry modification and improvement, these belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended right
It is required that it is defined.
Claims (18)
1. a kind of monophase machine, including excitation part and armature portion, it is characterised in that the excitation division point includes N number of magnet,
N number of magnet causes the excitation part to form 2N magnetic pole, and the armature portion includes 2N teeth portion, the 2N teeth portion
2N pole portion is formed, the N is the integer more than 1.
2. monophase machine as claimed in claim 1, it is characterised in that the armature portion also includes 2N coil, the line
Circle is corresponding to be wrapped in the 2N teeth portion.
3. monophase machine as claimed in claim 1, it is characterised in that the armature portion includes a stator, the excitation division
Dividing includes a rotor of relatively described stator rotation, and the stator includes the 2N teeth portion protruded out towards the rotor.
4. monophase machine as claimed in claim 3, it is characterised in that the rotor is durface mounted permanent magnet rotor, including a magnetic
Core, N number of magnet are evenly spaced apart to be arranged in the peripheral surface of the magnetic core.
5. monophase machine as claimed in claim 4, it is characterised in that the magnetic core surface offers N number of evenly spaced groove,
N number of magnet is correspondingly installed in the groove.
6. monophase machine as claimed in claim 5, it is characterised in that the groove is deep-slotted chip breaker or planar slot, and the magnet is
Tile magnet, the outer peripheral edge of the magnet are located at using rotor axis as on the circular arc in the center of circle.
7. monophase machine as claimed in claim 5, it is characterised in that the groove is deep-slotted chip breaker or planar slot, and the magnet is
Tile magnet, outer surface to the distance of rotor axis of each magnet are gradually reduced from its circumferential center toward circumferential both sides.
8. monophase machine as claimed in claim 4, it is characterised in that the side that N number of magnet presses close to magnetic core has identical
Polarity.
9. monophase machine as claimed in claim 3, it is characterised in that the rotor is embedded p-m rotor, including a magnetic
Core, N number of magnet are evenly spaced apart to be installed in the magnetic core.
10. monophase machine as claimed in claim 9, it is characterised in that it is evenly spaced apart to have opened up N bar grooves in the magnetic core,
For accommodating N number of magnet, each groove leaves space after magnet is contained between the both ends of groove and magnet, described
2N plane is cut out on rotor surface, the space at the both ends of each groove is respectively adjacent to wherein two planes.
11. monophase machine as claimed in claim 9, it is characterised in that the side of N number of magnet towards the stator has
Identical polarity.
12. a kind of monophase machine rotor, it is characterised in that the rotor includes a magnetic core and installation or is attached at the magnetic core
N number of magnet, N number of magnet causes the rotor to form 2N magnetic pole, and the N is the integer more than 1.
13. rotor as claimed in claim 12, it is characterised in that N number of magnet is evenly spaced apart to be installed on the magnetic core
Peripheral surface on.
14. rotor as claimed in claim 13, it is characterised in that the distance of the outer surface of each magnet to rotor axis from
Its circumferential center is gradually reduced toward circumferential both sides.
15. rotor as claimed in claim 13, it is characterised in that the side that N number of magnet presses close to magnetic core has identical
Polarity.
16. rotor as claimed in claim 12, it is characterised in that N number of magnet is evenly spaced apart described in embedded be installed on
In magnetic core.
17. rotor as claimed in claim 16, it is characterised in that be evenly spaced apart to have opened up N bar grooves in the magnetic core, be used for
N number of magnet is accommodated, each groove leaves space, the rotor after magnet is contained between the both ends of groove and magnet
2N plane is cut out on surface, the space at the both ends of each groove is respectively adjacent to wherein two planes.
18. rotor as claimed in claim 16, it is characterised in that the side of N number of magnet towards the stator has phase
Same polarity.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610518353.XA CN107565784A (en) | 2016-07-01 | 2016-07-01 | Monophase machine and its rotor |
| DE102017113895.1A DE102017113895A1 (en) | 2016-07-01 | 2017-06-22 | single-phase motor |
| US15/632,980 US20180006541A1 (en) | 2016-07-01 | 2017-06-26 | Single phase motor and rotor thereof |
| JP2017130129A JP2018023273A (en) | 2016-07-01 | 2017-07-03 | Single phase motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610518353.XA CN107565784A (en) | 2016-07-01 | 2016-07-01 | Monophase machine and its rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107565784A true CN107565784A (en) | 2018-01-09 |
Family
ID=60970111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610518353.XA Pending CN107565784A (en) | 2016-07-01 | 2016-07-01 | Monophase machine and its rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107565784A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323860A (en) * | 2018-03-28 | 2019-10-11 | 日本电产株式会社 | Motor |
-
2016
- 2016-07-01 CN CN201610518353.XA patent/CN107565784A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323860A (en) * | 2018-03-28 | 2019-10-11 | 日本电产株式会社 | Motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180109 |
|
| WD01 | Invention patent application deemed withdrawn after publication |