CN105932849A - Single-phase brushless motor - Google Patents
Single-phase brushless motor Download PDFInfo
- Publication number
- CN105932849A CN105932849A CN201610041471.6A CN201610041471A CN105932849A CN 105932849 A CN105932849 A CN 105932849A CN 201610041471 A CN201610041471 A CN 201610041471A CN 105932849 A CN105932849 A CN 105932849A
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- China
- Prior art keywords
- rotor
- magnetic
- stator
- single phase
- magnetic core
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention provides a single-phase brushless motor including a stator and a rotor, the stator includes a stator magnetic core (3) and a winding (5) winding on the stator magnetic core (3), the stator magnetic core (3) includes a circular yoke part (31) and teeth (32) extending inward from the yoke part (31), the tail ends, far away from the yoke part (31), of the teeth (32) form crowns (321) extending circumferentially, the crowns (321) of the adjacent teeth (32) are connected to each other to form a circular part (33), the winding winds the corresponding teeth (32), the circular part (33) of the stator magnetic core (3) receives the rotor which includes a rotor magnetic core (6) and permanent-magnet poles (71), the rotor magnetic core (6) includes a plurality of accommodating grooves (61), each permanent-magnet poles (71) is arranged in the corresponding accommodating groove (61), and the positions, corresponding to the accommodating grooves (61), on the outer peripheral face of the rotor magnetic core (6) are provided with slots (62). The single-phase brushless motor is high in running efficiency and low in cogging torque.
Description
Technical field
The present invention relates to technical field of motors, particularly relate to a kind of brushless single phase motor.
Background technology
Motor (Motors) is a kind of equipment utilizing electromagnetic induction principle to convert electric energy to mechanical energy, extensively
Apply in the various electric equipments needed for commercial production and life generally.
Existing motor can be divided into direct current generator and alternating current generator, wherein, the application ten of brshless DC motor
Divide extensively, such as fields such as household electrical appliance, automobile, industry industry control, automatization and Aero-Space.
Brshless DC motor refers to the motor of brushless and diverter.Existing brshless DC motor is a kind of allusion quotation
The electromechanical integrated product of type, it is in addition to having stator, rotor two parts, the most also with sensor.
Dividing according to the number of phases of brushless DC motor stator winding coil, brshless DC motor is divided into brushless single phase straight
Stream motor and multi-phase brushless DC motor.Though multi-phase brushless DC motor is reliable, noise is low, and efficiency is relatively
Height, but the production cost of multi-phase brushless DC motor is higher.The production cost of single-phase brushless direct-current motor is relatively low,
It is widely used on domestic electric appliance.
Fig. 1 show the permanent-magnet brushless DC electric machine in smoke exhaust ventilator invented before our company, including
Stator core 100 and rotor 200, the permanent-magnet pole 210 of its rotor 200 is arranged at rotor core 230
Outer surface, belongs to the brshless DC motor of magnet steel external labeling type.Fig. 2 is the local of stator core 100 in Fig. 1
Enlarged diagram, on the inner peripheral surface of stator core 100 tooth, offset teeth is provided centrally with the groove 130 of arc,
The air gap formed between this groove 130 and rotor 200 more than other positions of stator core 100 tooth and rotor it
Between air gap, be used for positioning the initial position of rotor.But, the magnet steel Surface Mount that this is applied in smoke exhaust ventilator
Formula single-phase brushless direct-current motor torque density is relatively low, and operational efficiency is relatively low, the inner peripheral surface of stator core 100 tooth
On groove is set, the air gap between the rotor that groove is formed is more than between other position stator and rotor
Air gap, thus cogging torque is relatively big, noise is bigger.
Summary of the invention
It is an object of the invention to provide a kind of brushless single phase motor, it is possible to reduce magnetic leakage, improve operational efficiency,
Cogging torque can be reduced simultaneously, weaken the cogging torque impact on rotor, enable rotor to be parked in deviation dead point
Position.
For achieving the above object, the present invention provides a kind of brushless single phase motor, including stator and can relative stator
The rotor rotated, described stator includes stator core and the winding being set around on stator core, stator core bag
Including ring-shaped yoke portion and some teeth extended internally from yoke portion, tooth is formed circumferentially away from the end in yoke portion
Crown, the crown of adjacent teeth is interconnected to ring part, and described winding is set around corresponding tooth, described rotor
Being contained in the ring part of described stator core, described rotor includes rotor magnetic core and some permanent-magnet poles, described
Rotor magnetic core sets some storage tanks, and each permanent-magnet pole is arranged in corresponding storage tank, rotor magnetic core outer peripheral face
The position of corresponding storage tank sets slit respectively, and described slit connects with described storage tank, along rotor circumference institute
State the width width less than described storage tank of slit.
The inner surface of the ring part of described stator core is positioned on the face of cylinder with rotor center as the center of circle.
The outer surface of the junction of the crown of described adjacent teeth sets groove or hole.
Described rotor magnetic core includes annular installation portion and some from the annular outward extending magnetic-conductance portion of installation portion, leads
Magnetic portion is circumferentially spaced with permanent-magnet pole.
The position of the corresponding described several teeth of the inner peripheral surface in described ring-shaped yoke portion is provided with several groove, described several teeth
It is sticked in respectively in described several groove.
Described rotor magnetic core is provided with several first through hole, and described rotor magnetic core is respectively arranged at two ends with balance plate,
On described balance plate, the position of corresponding described several first through holes is respectively equipped with several second through hole, and described first
Through hole and the second through hole are provided with connecting pin, described rotor magnetic core is fixed together with balance plate.
Described rotating shaft one end is arranged with annular magnet, and described stator is in the peripheral position of corresponding described annular magnet
If sensor is for detecting the position of rotor.
Preferably, the number of the tooth of described stator core equal to the number of rotor permanent magnet pole, each winding only across
A more tooth.
Alternatively, the number of the tooth of described stator core is n times of rotor permanent magnet pole number, each winding across
More n tooth, n is integer.
Preferably, described rotor magnetic core includes some magnetic-conductance portion, and described magnetic-conductance portion and permanent-magnet pole are along rotor circumference
Spaced apart, described permanent-magnet pole circumferentially polarizes.
Preferably, the outer surface of described magnetic-conductance portion circumferentially gradually inside contracts toward two ends from middle, thus at magnetic conduction
The centrage radially extended about magnetic-conductance portion is formed symmetrical between portion's outer surface and stator core inner surface
Non-homogeneous air gap.
Beneficial effects of the present invention: a kind of single-phase brushless direct-current motor that the present invention provides, rotor uses built-in
Formula permanent-magnet pole, and rotor magnetic core correspondence permanent-magnet pole outer end opens slit or sets magnetic bridge, can be by the leakage of permanent-magnet pole
Magnetic field positions the initial position of rotor.The crown of stator core connects into the ring part of closing, ring part
Inner surface is positioned on the face of cylinder with rotor center as the center of circle, the inner surface of ring part without opening detent,
Thus the non-uniform degree of air gap between stator and rotor can be reduced, thus reduce the cogging torque of motor.
In order to be able to be further understood that inventive feature and technology contents, refer to below in connection with the present invention
Detailed description and accompanying drawing, but accompanying drawing only provide with reference to and explanation use, not be used for the present invention is limited
System.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings, by the detailed description of the invention of the present invention is described in detail, the skill of the present invention will be made
Art scheme and other beneficial effects are apparent.
In accompanying drawing,
Fig. 1 is a kind of existing magnet steel surface-mount type single-phase brushless direct-current motor being applied in smoke exhaust ventilator
Stator and the structural representation of rotor；
Fig. 2 is the close-up schematic view of stator in Fig. 1；
Fig. 3 is the schematic perspective view of single-phase brushless direct-current motor of the present invention；
Fig. 4 is the perspective view of single-phase brushless direct current motor stator magnetic core of the present invention and rotor magnetic core；
Fig. 5 is the cross sectional representation of single-phase brushless direct current motor stator of the present invention and rotor；
Fig. 6 is the stereochemical structure signal in the ring-shaped yoke portion of the stator core of single-phase brushless direct-current motor of the present invention
Figure；
Fig. 7 is the perspective view of the ring part of the stator core of single-phase brushless direct-current motor of the present invention；
Fig. 8 is the perspective view of the rotor of single-phase brushless direct-current motor of the present invention；
Fig. 9 is the solid after the rotor of single-phase brushless direct-current motor of the present invention removes rotor magnetic core and permanent-magnet pole
Structural representation；
Figure 10 is the cross-sectional schematic of single-phase brushless direct-current motor of the present invention；
Figure 11 is the oscillogram of the counter electromotive force of single-phase brushless direct-current motor of the present invention；
Figure 12 is the oscillogram of the counter electromotive force of existing magnet steel surface-mount type single-phase brushless direct-current motor；
Figure 13 is the oscillogram of the cogging torque of single-phase brushless direct-current motor of the present invention；
Figure 14 is the oscillogram of the cogging torque of magnet steel surface-mount type single-phase brushless direct-current motor；
Figure 15 is the performance data figure of single-phase brushless direct-current motor of the present invention；
Figure 16 is the performance data figure of magnet steel surface-mount type single-phase brushless direct-current motor.
Detailed description of the invention
By further illustrating the technological means and effect thereof that the present invention taked, excellent below in conjunction with the present invention
Embodiment and accompanying drawing thereof is selected to be described in detail.
Please refer to Fig. 3-Fig. 7, one embodiment of the invention provides a kind of single-phase brushless direct-current motor, bag
Include stator and can relative stator rotate rotor, described stator includes the stator magnet being made up of permeability magnetic material such as ferrum
Core 3 and the winding 5 being set around on stator core 3, stator core 3 include ring-shaped yoke portion 31 and some from
The tooth 32 that yoke portion 31 extends internally, tooth 32 forms crown 321 circumferentially away from the end in yoke portion 31,
The crown 321 of adjacent teeth 32 is interconnected to ring part 33, and described winding 5 is set around respective teeth 32
On winding section.Described rotor is contained in the ring part 33 of described stator core 3, described rotor include by
Rotor magnetic core 6 that permeability magnetic material such as ferrum is made and some permanent-magnet poles 71, described rotor magnetic core 6 sets some edges
Axially extended storage tank 61, each permanent-magnet pole 71 is arranged in corresponding storage tank 61, rotor magnetic core 6
The position of outer peripheral face correspondence storage tank 61 sets slit 62 respectively, and described slit 62 is positioned at corresponding storage tank 61
Radial outer end and connect with corresponding storage tank 61, along rotor circumference described slit 62 width
Width less than described storage tank 61.Described rotor magnetic core 6 includes annular installation portion 601 and some from ring
The outward extending magnetic-conductance portion of shape installation portion 601 602, magnetic-conductance portion 602 and circumferentially spaced point of permanent-magnet pole 71
Cloth, the most each permanent-magnet pole 71 is disposed radially and circumferentially polarizes, the polarity phase of adjacent permanent magnetic poles 71
Instead.Preferably, rotor magnetic core 6 is stacked vertically by most layer Monolithic chip and forms, and the adjacent of chip is led
The radial outer end in magnetic portion 602 is separated from each other by slit 62, and the radial inner end of adjacent magnetic-conductance portion 602 connects
To ring part 33.It is to be appreciated that chip can also use split-type structural, the most adjacent magnetic-conductance portion 602
Separately molding fits together the most again.Preferably, the outer surface of magnetic-conductance portion 602 from centre circumferentially to two
End is gradually to inside contracting, thus is formed about leading between the outer surface and stator core inner surface of magnetic-conductance portion 602
The non-homogeneous air gap that the centrage radially extended in magnetic portion is symmetrical, is so designed that the ripple that can improve cogging torque
Shape, certainly, the outer surface of magnetic-conductance portion 602 can also be positioned on same periphery, thus in magnetic-conductance portion 602
Outer surface and stator core inner surface between formed even air gap.
Referring to Fig. 4, the tooth 32 of described stator core 3 is provided with insulating bobbin 4, described winding 5
It is set around on described insulating bobbin 4.
Referring to Fig. 6 and Fig. 7, described stator core uses split-type structural, the most described ring-shaped yoke portion 31
Molding is separated with tooth.The position of the corresponding described several teeth 32 of the inner peripheral surface in described ring-shaped yoke portion 31 is provided with several
Groove 311, described several teeth 32 are sticked in described several groove 311 respectively.Stator winding 5 around
After being located at the respective teeth 32 of stator core 3, yoke portion 31 fits together with tooth again, is so designed that, can be square
Just stator winding increase the copper factor of stator winding.
Referring to Fig. 7, the outer surface of the junction of the crown 321 of described adjacent teeth 32 sets groove or hole
322, thus form the magnetic bridge that magnetic resistance is bigger in junction, to reduce leakage field.
Please refer to Fig. 5 and Fig. 8-Fig. 9, the magnetic-conductance portion 602 of described rotor magnetic core 6 is provided with first and leads to
Hole 63, described rotor magnetic core 6 is respectively arranged at two ends with balance plate 8, corresponding described several on described balance plate 8
The position of the first through hole 63 is respectively equipped with several second through hole 81, described first through hole 63 and the second through hole
It is provided with connecting pin 82 in 81, described rotor magnetic core 6 is fixed together with balance plate 8.
The center of described balance plate 8 is provided with third through-hole 84, is equipped with and turns in described rotor magnetic core 6
Axle 9, the position of the third through-hole 84 that balance plate 8 is stretched out in described rotating shaft 9 is respectively equipped with bearing 83.
Please refer to Fig. 9 and Figure 10, described stator and rotor exterior are respectively equipped with end cap 1 and bonnet 2,
Described bearing 83 is respectively arranged in bearing mounting base 1a and 2a of end cap 1 and bonnet 2.Near described
Being provided with annular magnet 72 outside the balance plate 8 of end cap 1 side, described annular magnet 72 is fixed to rotating shaft 9
And can be with rotating shaft 9 synchronous rotary, described annular magnet 72 periphery sets induction apparatus such as Hall element 11, uses
Position in sensing rotor.Described end cap 1 is fixed to mounting seat 15, in described mounting seat 15 with bonnet 2
If mounting structure such as installing hole, for being fixedly installed to motor such as equipment such as lampblack absorbers.
Please refer to Figure 11 and Figure 12, by the ripple of the counter electromotive force of the single-phase brushless direct-current motor of the present invention
Shape figure contrasts with the oscillogram of the counter electromotive force of existing single-phase brushless direct-current motor, it can be seen that this
The counter electromotive force of the single-phase brushless direct-current motor of invention is compared to single-phase brushless direct-current motor as shown in Figure 1
Counter electromotive force be more nearly the most profound.
Please refer to Figure 13 and Figure 14, by the ripple of the cogging torque of the single-phase brushless direct-current motor of the present invention
Shape figure contrasts with the oscillogram of the cogging torque of existing single-phase brushless direct-current motor, it can be seen that this
The cogging torque of the single-phase brushless direct-current motor of invention is less than single-phase brushless direct-current motor as shown in Figure 1
Cogging torque.
Please refer to Figure 15 and Figure 16, by the performance data figure of the single-phase brushless direct-current motor of the present invention with
The performance data figure of existing single-phase brushless direct-current motor contrasts, it can be seen that the single-phase nothing of the present invention
The operational efficiency of brushless motor is higher than the operational efficiency of single-phase brushless direct-current motor as shown in Figure 1, as
Sample is in the case of input 700mNm, and efficiency is risen to 67.34% by 53.55%, improves 14 hundred
Branch.
In sum, the single-phase brushless direct-current motor of above-described embodiment, rotor uses built-in type permanent-magnet pole
(Internal Permanent Magnet), the crown 321 of stator core 3 connects into the ring part 33 of closing,
The inner surface of ring part 33 is positioned on the face of cylinder with rotor center as the center of circle, the inner surface of ring part 33 without
Detent need to be opened, thus the non-uniform degree of air gap between stator and rotor can be reduced, thus reduce motor
Cogging torque.By utilizing the interaction between the stray field of the radial extremity of permanent-magnet pole 71 and tooth 32
Can position the initial position of rotor and make its initial position deviate dead-centre position, so-called dead-centre position i.e. refers to
During stator winding electrifying, stator and rotor mutually inhale the position that dead rotor can not be activated, specific to this enforcement
In, the dead-centre position of rotor be rotor magnetic-conductance portion 602 circumferential center just to or in the stator tooth 32
The position of the heart.By adjusting the position of magnetic bridge 322 between adjacent teeth 32, the initial bit of rotor can be adjusted
Put.During as magnetic bridge 322 is designed to the centre position being placed exactly in adjacent teeth, during stator winding power-off, turn
Son by be parked in the centre position of each magnetic-conductance portion 602 just to or near the middle position of a pair respective teeth, as
The motor of this design, (controller senses according to induction apparatus to coordinate the controller of two induction apparatuss and motor
Rotor-position controls the direction of the electrical current of stator winding), rotor can realize twocouese (counterclockwise
Or clockwise) start.As magnetic bridge 322 is designed to deviate adjacent teeth centre position time such as magnetic bridge 322
When deviateing the centre position certain distance of adjacent teeth along the counter clockwise direction shown in Fig. 5, the initial position of rotor
Respective angles, the motor being so designed that will be rotated in the counterclockwise direction, coordinate an induction apparatus and the control of motor
Device processed, rotor is easier to realize clockwise startup.As magnetic bridge 322 being designed to deviate adjacent teeth
During centre position when magnetic bridge 322 deviates the centre position of adjacent teeth along the clockwise direction shown in Fig. 5, turn
The initial position of son will be rotated in a clockwise direction respective angles, and the motor being so designed that coordinates a sensing
Device and the controller of motor, rotor is easier to realize counterclockwise starting.
Described slit 62 is set and can reduce the magnetic leakage occurred in permanent-magnet pole 71 end.It is to be appreciated that
Described slit 62 can also be not entirely separate the outer end of adjacent magnetic-conductance portion 602, namely described slit 62
Can replace by other shapes of magnetic bridge form, as passed through a company between the outer end of adjacent magnetic-conductance portion 602
The portion that connects is connected, and connecting portion sets otch/perforate etc. and increases the magnetic of connecting portion to reduce its cross-sectional area
Resistance, to reduce leakage field.
In the aforementioned embodiment, the number of described stator core tooth equal to the number of rotor permanent magnet pole, each around
Group only crosses over a tooth, and as formed 8 pole 8 groove brushless single phase motors, (motor forms 8 rotor permanent magnets
Pole, 8 stator tooths form 8 winding slots, and 8 windings are rotating around on 8 teeth).It is to be appreciated that
The number of the tooth of described stator core is n times of rotor permanent magnet pole number, and each winding crosses over n tooth, n
For integer.
It is to be appreciated that the brushless motor structure of the present invention is not limited to direct current generator, it is also possible to be used in alternating current
In machine such as synchronous motor, as the stator winding of the 8 pole 8 groove brushless electric machines of above-described embodiment is connected to 50
Hertz alternating current power supply time, the rotating speed of rotor is 750 revs/min.
The above, for the person of ordinary skill of the art, can be according to technical scheme
Other various corresponding changes and deformation are made, as rotor magnetic core 6 can be identical by structure with technology design
Chip stacks vertically and forms, it is also possible to is stacked vertically by the chip that structure is different and forms, such as some chip
In Ceng the outer end of adjacent magnetic-conductance portion 602 be connected and in some chip layer the outer end of adjacent magnetic-conductance portion 602 the most disconnected
Open；The material of rotor permanent magnet pole can be Ferrite Material or rare earth material etc.；Tooth 32 in stator core 3
Can also be one-body molded with yoke portion 31 discretely-formed, the winding portion of tooth can be one-body molded with crown
Can also discretely-formed, and all these change and deformation all should belong to the guarantor of appended claims of the present invention
Protect scope.
Claims (13)
1. a brushless single phase motor, including stator and can relative stator rotate rotor, it is characterised in that
Described stator includes stator core (3) and the winding (5) being set around on stator core (3), stator core
(3) ring-shaped yoke portion (31) and some teeth (32) extended internally from yoke portion (31), tooth (32) are included
End away from yoke portion (31) forms crown (321) circumferentially, the crown (321) of adjacent teeth (32)
Being interconnected to ring part (33), described winding (5) is set around corresponding tooth (32), and described rotor is received
Be dissolved in the ring part (33) of described stator core (3), described rotor include rotor magnetic core (6) and if
Dry permanent-magnet pole (71), described rotor magnetic core (6) sets some storage tanks (61), each permanent-magnet pole (71)
It is arranged in corresponding storage tank (61).
2. brushless single phase motor as claimed in claim 1, it is characterised in that described rotor magnetic core (6)
The position of outer peripheral face correspondence storage tank (61) sets slit (62), described slit (62) and described appearance respectively
Putting groove (61) to connect, the width along the rotor described slit of circumference (62) is less than described storage tank (61)
Width.
3. brushless single phase motor as claimed in claim 1 or 2, it is characterised in that described stator core
(3) inner surface of ring part (33) is positioned on the face of cylinder with rotor center as axle center.
4. brushless single phase motor as claimed in claim 1, it is characterised in that described adjacent teeth (32)
The junction of crown (321) set magnetic bridge.
5. brushless single phase motor as claimed in claim 4, it is characterised in that described adjacent teeth (32)
The outer surface of crown (321) junction set groove or hole (322).
6. brushless single phase motor as claimed in claim 1 or 2, it is characterised in that described rotor magnetic core
(6) annular installation portion (601) is included and some from annular installation portion (601) outward extending magnetic-conductance portion (602),
Magnetic-conductance portion (602) and permanent-magnet pole (71) are along the circumferentially-spaced distribution of rotor.
7. brushless single phase motor as claimed in claim 1, it is characterised in that described ring-shaped yoke portion (31)
The position of the corresponding described several teeth (32) of inner peripheral surface be provided with several groove (311), described several teeth (32)
It is sticked in respectively in described several groove (311).
8. brushless single phase motor as claimed in claim 1, it is characterised in that described rotor magnetic core (6)
Being provided with several first through hole (63), described rotor magnetic core (6) is respectively arranged at two ends with balance plate (8), institute
The position stating upper corresponding described several first through holes (63) of balance plate (8) is respectively equipped with several second through hole
(81), described first through hole (63) and the second through hole (81) are provided with connecting pin (82), by described turn
Sub-magnetic core (6) is fixed together with balance plate (8).
9. brushless single phase motor as claimed in claim 1 or 2, it is characterised in that described rotating shaft (9)
One end is arranged with annular magnet (72), and described stator is in the peripheral position of corresponding described annular magnet (72)
If induction apparatus (11) is for detecting the position of rotor.
10. brushless single phase motor as claimed in claim 1 or 2, it is characterised in that described stator core
The number of tooth equal to the number of rotor permanent magnet pole, each winding only crosses over a tooth.
11. brushless single phase motors as claimed in claim 1 or 2, it is characterised in that described stator core
N times that number is rotor permanent magnet pole number of tooth, each winding crosses over n tooth, and n is integer.
12. brushless single phase motors as claimed in claim 1 or 2, it is characterised in that described rotor magnetic core
Including some magnetic-conductance portion (602), described magnetic-conductance portion (602) is circumferentially-spaced along rotor with permanent-magnet pole (71)
Distribution, described permanent-magnet pole circumferentially polarizes.
13. brushless single phase motors as claimed in claim 11, it is characterised in that described magnetic-conductance portion (602)
Outer surface circumferentially gradually inside contract toward two ends from middle, thus table in magnetic-conductance portion outer surface with stator core
The non-homogeneous air gap that the centrage radially extended about magnetic-conductance portion is symmetrical is formed between face.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510090157 | 2015-02-27 | ||
| CN2015100901572 | 2015-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105932849A true CN105932849A (en) | 2016-09-07 |
Family
ID=56840329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610041471.6A Withdrawn CN105932849A (en) | 2015-02-27 | 2016-01-21 | Single-phase brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105932849A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109262418A (en) * | 2018-10-18 | 2019-01-25 | 浙江神阳机电科技有限公司 | A kind of intelligent AC brushless single phase angle grinder |
| CN109494897A (en) * | 2018-11-09 | 2019-03-19 | 深圳南方德尔汽车电子有限公司 | EPS motor rotor lamination structure |
| CN110212711A (en) * | 2019-05-10 | 2019-09-06 | 上海晶丰明源半导体股份有限公司 | A kind of processing method of ceiling fan even air gap brushless single phase motor and its stator |
| CN112769272A (en) * | 2021-01-20 | 2021-05-07 | 苏州博特蒙电机有限公司 | Sine brushless permanent magnet motor |
| CN110212711B (en) * | 2019-05-10 | 2024-07-02 | 中山市精久电机有限公司 | Uniform air gap single-phase brushless motor for ceiling fan and processing method of stator of uniform air gap single-phase brushless motor |
-
2016
- 2016-01-21 CN CN201610041471.6A patent/CN105932849A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109262418A (en) * | 2018-10-18 | 2019-01-25 | 浙江神阳机电科技有限公司 | A kind of intelligent AC brushless single phase angle grinder |
| CN109494897A (en) * | 2018-11-09 | 2019-03-19 | 深圳南方德尔汽车电子有限公司 | EPS motor rotor lamination structure |
| CN110212711A (en) * | 2019-05-10 | 2019-09-06 | 上海晶丰明源半导体股份有限公司 | A kind of processing method of ceiling fan even air gap brushless single phase motor and its stator |
| CN110212711B (en) * | 2019-05-10 | 2024-07-02 | 中山市精久电机有限公司 | Uniform air gap single-phase brushless motor for ceiling fan and processing method of stator of uniform air gap single-phase brushless motor |
| CN112769272A (en) * | 2021-01-20 | 2021-05-07 | 苏州博特蒙电机有限公司 | Sine brushless permanent magnet motor |
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