CN104348271A - Single-phase brushless motor - Google Patents
Single-phase brushless motor Download PDFInfo
- Publication number
- CN104348271A CN104348271A CN201310348173.8A CN201310348173A CN104348271A CN 104348271 A CN104348271 A CN 104348271A CN 201310348173 A CN201310348173 A CN 201310348173A CN 104348271 A CN104348271 A CN 104348271A
- Authority
- CN
- China
- Prior art keywords
- rotor
- ring portion
- internal ring
- single phase
- stator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- 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)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a single-phase brushless motor. The single-phase brushless motor comprises a stator and a rotor capable of rotating relative to the stator, wherein the rotor comprises a plurality of permanent magnetic poles; the stator comprises a magnetic core and a winding wound on the magnetic core; the stator magnetic core comprises an outer ring part, an inner ring part and a plurality of wire winding parts connected between the inner ring part and the outer ring part; the winding is wound on the wire winding parts; the rotor is stored in the inner ring part; a uniform air gap is formed between the inner ring part of the stator and the rotor; the inner surface of one part, located between the adjacent wire winding parts, of the inner ring part is provided with a concave part; the center of the concave part is deviated from the symmetrical center of the adjacent wire winding parts. According to the single-phase brushless motor, the uniform air gap is formed between the stator and the rotor, and a needed starting angle and a needed positioning moment are conveniently adjusted according to design requirements in a starting process, so that the startup is reliable.
Description
Technical field
The present invention relates to a kind of brushless single phase motor, particularly relate to a kind of brushless single phase motor of even air gap.
Background technology
Figure 8 shows that a kind of brushless single phase motor of prior art, motor stator core adopts monolithic construction, namely the outer portion of stator core and teeth portion are molded as one formula structure simultaneously, establish notch between the pole shoe of adjacent fingers, between the inner surface that pole shoe is relative with rotor and rotor magnet, form non-uniform gap.The brushless single phase motor of this kind of structure, the existence due to notch can cause motor to produce larger location torque, thus produces vibrations and noise.And the positioning action produced by non-uniform gap is by the restriction of notch, and position initiation angle is little, and starting reliability is poor.Stator core is integral type structure, and often can only adopt shuttles formula coil winding machine in production, coiling production efficiency is low, time-consumingly takes material.
In view of this, the present invention aims to provide a kind of brushless single phase motor of novel improved starting reliability.
Summary of the invention
The invention provides a kind of brushless single phase motor, comprise stator and can relative stator rotate rotor, described rotor comprises some permanent magnet poles, described stator comprises magnetic core and is set around the winding on magnetic core, described stator core comprises outer portion, internal ring portion and some be connected to described in, winding section between outer portion, described winding is set around on corresponding winding section, described rotor is contained in described internal ring portion, basic uniform air gap is formed between described stator inner loop portion and rotor, the part of described internal ring portion between adjacent winding section on the inner surface of rotor, establish depression, the symmetrical centre of adjacent winding section described in the misalignment of described depression.
Preferably, the inner surface of described internal ring portion be positioned at rotor center be the center of circle concentric circles on.
Preferably, the part between adjacent winding section of described internal ring portion establishes magnetic bridge.
Preferably, the corresponding magnetic bridge place of the outer surface of described internal ring portion establishes groove.
Alternatively, the apertured hole, corresponding magnetic bridge place of described internal ring portion.
Preferably, the number of described depression is all equal with the number of poles of the number of winding section and rotor magnetic pole.
Preferably, one of them or whole discretely-formed of described winding section and internal ring portion and outer portion.
Preferably, described depression is along motor shaft to the inner surface running through described stator core internal ring portion.
Alternatively, described depression is along motor shaft to the inner surface being arranged at intervals at described stator core internal ring portion.
Preferably, symmetrical centre 45 degree to 135 degree electrical degrees of the misalignment of a described depression wherein adjacent winding section.
The brushless single phase motor that the embodiment of the present invention is lifted, adopts even air gap between rotor, and during starting, required starting angle and location torque can need convenient adjustment according to design, thus start reliable; The part between adjacent winding section of internal ring portion adopts magnetic bridge to connect, and avoids and arranges notch between adjacent stator pole portion in prior art and cause magnetic resistance to suddenly change, thus can reduce the location torque of motor; During stator core employing split-type structural, make to adopt round trip flight to pitch coil winding machine before winding section and outer portion/internal ring portion are assembled and carry out coiling, coiling production efficiency is high.
In order to further understand feature of the present invention and technology contents, refer to following detailed description for the present invention and accompanying drawing, but institute's accompanying drawing only provides reference and explanation use, is not used for being limited the present invention.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the brushless single phase motor of better embodiment of the present invention.
Fig. 2 is the stator schematic perspective view of the brushless single phase motor of Fig. 1.
Fig. 3 be the brushless single phase motor of Fig. 1 along motor shaft to end view.
Fig. 4 and Fig. 5 illustrates the stator core of different execution mode respectively.
Fig. 6 is the end view of the brushless single phase motor of another execution mode of the present invention.
Fig. 7 is the end view of the present invention's brushless single phase motor of an execution mode again.
Figure 8 shows that the brushless single phase motor of prior art along motor shaft to end view.
Embodiment
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention describe in detail, will make technical scheme of the present invention and other beneficial effects apparent.Accompanying drawing only provides reference and explanation use, is not used for being limited the present invention.The size shown in accompanying drawing is only used to be convenient to clear description, and does not limit proportionate relationship.
Refer to Fig. 1 to Fig. 3, the brushless single phase motor 10 of the present invention one better embodiment comprises the rotor 70 of stator 30 and relative stator 30 rotation.
The winding 50 that described stator 30 comprises magnetic core 40 and is set around on magnetic core 40.Described stator core 40 by permeability magnetic material make as by magnetic conduction chip (industry commonly uses silicon steel sheet) along motor shaft to being laminated, comprise outer portion 42, internal ring portion 44 and some winding sections 46 be connected between inside and outside ring portion 44,42.Ring portion alleged by the present invention refers to the enclosed construction circumferentially extended continuously.Preferably, described winding section 46 is along the distribution of motor circumference uniform intervals, and each winding section 46 extends to outer portion 42 along motor radial direction from internal ring portion 44 substantially.In the present embodiment, described winding section 46 is one-body molded in aggregates with internal ring portion 44, is split-type structural between winding section 46 and outer portion 42, and namely outer portion 42 is separating shaped with winding section 46, and then fits together.Described winding 50 is set around on corresponding winding section 46, and described rotor 70 is contained in described internal ring portion 44.The part of described internal ring portion 44 between adjacent winding section 46 on the inner surface of rotor 70, establish depression 442, the symmetrical centre of adjacent winding section 46 described in the misalignment of described depression 442, that is: by there is angle between the straight line L1 of groove 442 center and rotor center and the symmetrical centre L2 of adjacent winding section 46.
Preferably, described depression 448 is along motor shaft to the inner surface running through described stator core internal ring portion 44.
Understandably, described depression 448 also can along motor shaft to the inner surface being arranged at intervals at described stator core internal ring portion 44, as as described in stator core 40 formed to alternately laminated along motor shaft by two kinds of stator chip/chipsets, on described depression a kind of chip/chipset disposed therein.
Preferably, the inner surface of described internal ring portion 44 is positioned at on the concentric circles that is the center of circle of rotor 70 center, and like this, between rotor, the air gap of (between internal ring portion 44 inner surface and rotor 70 outer surface) is even air gap substantially.The external surface shape of internal ring portion 44 is not limit.
Preferably, the part between adjacent winding section 46 of described internal ring portion 44 establishes magnetic bridge 444, and the radial width of magnetic bridge 444 is less than the radial width at other positions of internal ring portion 44.
Preferably, corresponding magnetic bridge 442 place of the outer surface of described internal ring portion 44 establishes groove 446.In the present embodiment, the number of described groove 446 is 2.Certainly, need also to be 1 according to design, as shown in Figure 4; 3 as shown in Figure 5, or other quantity.The shape of groove 446 can be circular arc, other any shapes such as square.
Understandably, can also by arranging hole 448 to form magnetic bridge in corresponding magnetic bridge 444 position of internal ring portion 44, as shown in Figure 6.
Understandably, each winding section 46 is fixedly attached to outer portion 42 by welding or various mechanical connection manner (as established the snap of dovetail groove).
Understandably, described winding section 46 also can be one-body molded with outer portion 42, and with internal ring portion 44 discretely-formed, again winding section 46 is fixedly connected with internal ring portion 44 after complete at winding 50, as shown in Figure 6.
Understandably, described winding section 46 also can with outer portion 42 and internal ring portion 44 all discretely-formed, again winding section 46 is fixedly connected with outer portion 42 and internal ring portion 44 after complete at winding 50, as shown in Figure 7.
Described winding 50 comprises some coils, is set around on winding section 46 respectively, and each coil is only set around on a winding section 46, and like this, the number of coil equals the number of winding section 46.Described coil connects into a phase, and concrete connected mode is not limit, as can be directly connected or first series connection and then parallel connection or direct parallel connection etc. between two.
Described rotor 70 comprises rotor magnetic core 72 and is located at the permanent magnet 74 of rotor magnetic core 72 outer surface, and described permanent magnet 74 forms some permanent magnet poles circumferentially spaced apart, and the polarity of adjacent pole is contrary.Preferably, the number of poles of permanent magnet poles that described permanent magnet 74 is formed and the number in stator winding portion 46 and to be located at the number of the depression 442 on internal ring portion 44 inner surface equal, in the present embodiment, described rotor forms 4 permanent magnet poles.Certainly, described rotor also can form the permanent magnet poles of other quantity such as 2,6,8.
When motor is in non-"on" position, neutral zone between adjacent pole 74 is respectively just to the depression 442 in stator inner loop portion 44, also namely the centre line L 3 of rotor magnetic pole overlaps with corresponding adjacent recessed 442 symmetrical center line respectively, thus make the centre line L 3 of rotor magnetic pole depart from stator winding portion 46(adjacent with it also referred to as stator poles portion) centre line L 4, the angle that L3 departs from L4 is called starting angle Q, and the numerical value starting angle Q is equal with the angle numerical value between straight line L1 and L2.In the present embodiment, described starting angle Q is greater than 45 degree of electrical degrees and is less than 135 degree of electrical degrees, and when motor stator winding 50 passes to the electric current in a direction, rotor 70 can start from a direction; When motor stator winding 50 passes to rightabout electric current, rotor 70 can start the other way around.Understandably, when starting angle Q and equaling 90 degree of electrical degrees (also namely the center of rotor magnetic pole overlaps with the symmetrical centre of adjacent winding section 46), rotor 70 starts all than being easier to towards both direction, also namely the most easily realizes twocouese and starts.When starting angle Q and departing from 90 degree of electrical degrees, a rotor court wherein direction starting can be easier to than starting towards other direction.Present inventor finds through many experiments, and when starting angle Q and being in 45 degree of electrical degrees to 135 degree electrical degree scopes, the reliability that rotor starts towards both direction is all relatively good.
The brushless single phase motor that the embodiment of the present invention is lifted, basic even air gap (except the neutral zone air gap between corresponding recess and adjacent pole) is adopted between rotor, during starting, required starting angle and location torque can need convenient adjustment by design, thus start reliable, as can be conveniently adjusted electric motor starting angle by the position of adjustment internal ring portion depression, when starting angle Q and being greater than 45 degree of electrical degrees and being less than 135 degree of electrical degrees, described rotor can realize twocouese and start, by the shape of adjustment internal ring portion depression, size, the size of the location torque before the whole electric motor starting of depth adjustable, stator core internal ring portion adopts continuous structure, and the part of internal ring portion between adjacent winding section adopts magnetic bridge to connect, and avoids and arranges notch between the portion of adjacent stators tooth pole in prior art and cause magnetic resistance to suddenly change, thus can reduce the location torque of motor, stator core adopts split-type structural, thus makes to adopt round trip flight to pitch coil winding machine before winding section and outer portion are assembled and carry out coiling, and coiling production efficiency is high.
Understandably, if do not mind coiling production efficiency, stator core also can adopt monolithic construction, i.e. winding section and inside and outside ring portion one-body molded integrally formula structure.
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 (10)
1. a brushless single phase motor, comprise stator and can relative stator rotate rotor, described rotor comprises some permanent magnet poles, described stator comprises magnetic core and is set around the winding on magnetic core, described stator core comprises outer portion, internal ring portion and some be connected to described in, winding section between outer portion, described winding is set around on corresponding winding section, described rotor is contained in described internal ring portion, it is characterized in that: between described stator inner loop portion and rotor, form basic uniform air gap, the part of described internal ring portion between adjacent winding section on the inner surface of rotor, establish depression, the symmetrical centre of adjacent winding section described in the misalignment of described depression.
2. brushless single phase motor as claimed in claim 1, is characterized in that, the inner surface of described internal ring portion be positioned at rotor center be the center of circle concentric circles on.
3. brushless single phase motor as claimed in claim 1, it is characterized in that, the part of described internal ring portion between adjacent winding section establishes magnetic bridge.
4. brushless single phase motor as claimed in claim 3, is characterized in that, the corresponding magnetic bridge place of outer surface of described internal ring portion establishes groove.
5. brushless single phase motor as claimed in claim 3, is characterized in that, the apertured hole, corresponding magnetic bridge place of described internal ring portion.
6. brushless single phase motor as claimed in claim 1, it is characterized in that, the number of described depression is equal with the number of poles of the number of winding section and rotor magnetic pole.
7. brushless single phase motor as claimed in claim 1, is characterized in that, described winding section and internal ring portion and outer portion one of them or whole discretely-formed.
8. the brushless single phase motor as described in any one of claim 1 to 7, is characterized in that, described depression is along motor shaft to the inner surface running through described stator core internal ring portion.
9. the brushless single phase motor as described in any one of claim 1 to 7, is characterized in that, described depression is along motor shaft to the inner surface being arranged at intervals at described stator core internal ring portion.
10. the brushless single phase motor as described in any one of claim 1 to 7, is characterized in that, symmetrical centre 45 degree to 135 degree electrical degrees of the misalignment of a described depression wherein adjacent winding section.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310348173.8A CN104348271B (en) | 2013-08-09 | 2013-08-09 | Brushless single phase motor |
| DE102014110609.1A DE102014110609A1 (en) | 2013-08-09 | 2014-07-28 | Single-phase brushless motor |
| US14/455,160 US10110076B2 (en) | 2013-08-09 | 2014-08-08 | Single-phase brushless motor |
| KR1020140102112A KR20150018462A (en) | 2013-08-09 | 2014-08-08 | Single-phase brushless motor |
| JP2014161995A JP6592234B2 (en) | 2013-08-09 | 2014-08-08 | Single phase brushless motor |
| US15/201,014 US10498181B2 (en) | 2013-08-09 | 2016-07-01 | Motor and method for using and making the same |
| US15/248,460 US10454354B2 (en) | 2013-08-09 | 2016-08-26 | Single phase motor |
| US15/248,829 US20160365756A1 (en) | 2013-08-09 | 2016-08-26 | Motor and method for using and making the same |
| US15/249,159 US20160365782A1 (en) | 2013-08-09 | 2016-08-26 | Motor and method for using and making the same |
| US15/249,207 US10734850B2 (en) | 2013-08-09 | 2016-08-26 | Single-phase motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310348173.8A CN104348271B (en) | 2013-08-09 | 2013-08-09 | Brushless single phase motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104348271A true CN104348271A (en) | 2015-02-11 |
| CN104348271B CN104348271B (en) | 2019-07-23 |
Family
ID=52503302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310348173.8A Expired - Fee Related CN104348271B (en) | 2013-08-09 | 2013-08-09 | Brushless single phase motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104348271B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113195893A (en) * | 2018-12-20 | 2021-07-30 | 三电控股株式会社 | Motor for electric compressor, electric compressor including the same, and method for manufacturing motor for electric compressor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3056896A (en) * | 1958-11-10 | 1962-10-02 | Licentia Gmbh | Stator for a.c. motor |
| WO2002047238A1 (en) * | 2000-12-06 | 2002-06-13 | Newage International Limited | Electrical machine magnetic cores |
| US20040183393A1 (en) * | 2003-03-18 | 2004-09-23 | Asmo Co., Ltd. | Stator for dynamo-electric machine |
| GB2394123B (en) * | 2002-08-05 | 2005-05-04 | Visteon Global Tech Inc | Stator for brushless motor |
| JP2006050680A (en) * | 2004-07-08 | 2006-02-16 | Kokusan Denki Co Ltd | Armature for motor |
| CN1937357A (en) * | 2005-09-20 | 2007-03-28 | 山洋电气株式会社 | Permanent magnet rotary motor |
| US7560844B2 (en) * | 2005-03-25 | 2009-07-14 | Sanyo Denki Co., Ltd. | Permanent magnet rotary motor |
| CN103138501A (en) * | 2011-11-30 | 2013-06-05 | 株式会社捷太格特 | Method for manufacturing stator for motor and stator for motor |
-
2013
- 2013-08-09 CN CN201310348173.8A patent/CN104348271B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3056896A (en) * | 1958-11-10 | 1962-10-02 | Licentia Gmbh | Stator for a.c. motor |
| WO2002047238A1 (en) * | 2000-12-06 | 2002-06-13 | Newage International Limited | Electrical machine magnetic cores |
| GB2394123B (en) * | 2002-08-05 | 2005-05-04 | Visteon Global Tech Inc | Stator for brushless motor |
| US20040183393A1 (en) * | 2003-03-18 | 2004-09-23 | Asmo Co., Ltd. | Stator for dynamo-electric machine |
| JP2006050680A (en) * | 2004-07-08 | 2006-02-16 | Kokusan Denki Co Ltd | Armature for motor |
| US7560844B2 (en) * | 2005-03-25 | 2009-07-14 | Sanyo Denki Co., Ltd. | Permanent magnet rotary motor |
| CN1937357A (en) * | 2005-09-20 | 2007-03-28 | 山洋电气株式会社 | Permanent magnet rotary motor |
| CN103138501A (en) * | 2011-11-30 | 2013-06-05 | 株式会社捷太格特 | Method for manufacturing stator for motor and stator for motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113195893A (en) * | 2018-12-20 | 2021-07-30 | 三电控股株式会社 | Motor for electric compressor, electric compressor including the same, and method for manufacturing motor for electric compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104348271B (en) | 2019-07-23 |
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Granted publication date: 20190723 Termination date: 20210809 |