CN202488325U - Three-phase brushless direct current motor stator iron core for ceiling fan - Google Patents
Three-phase brushless direct current motor stator iron core for ceiling fan Download PDFInfo
- Publication number
- CN202488325U CN202488325U CN2012201052724U CN201220105272U CN202488325U CN 202488325 U CN202488325 U CN 202488325U CN 2012201052724 U CN2012201052724 U CN 2012201052724U CN 201220105272 U CN201220105272 U CN 201220105272U CN 202488325 U CN202488325 U CN 202488325U
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- phase brushless
- iron core
- ceiling fan
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Abstract
The utility model provides a three-phase brushless direct current motor stator iron core for a ceiling fan. By means of the design of the shape of a stator iron core, the problems of electromagnetic noise and electromagnetic vibration in the working process of a direct current motor are solved. The three-phase brushless direct current motor stator iron core for the ceiling fan comprises a stator body, a stator axis core is arranged in the center of the stator body, 12 teeth with the same size are evenly distributed on the outer periphery of the stator body, and a curve formed by the intersection of the top end of each tooth and the end face of each tooth is a non concentric circle arc of a circle where the stator axis core is placed. According to the three-phase brushless direct current motor stator iron core for the ceiling fan, a single set of winding grooves used for fixing windings is adopted, and thus the stator iron core has the advantages of being simple in structure, convenient in processing and safe in operation. The tooth top end of the stator iron core is designed in a shape which enables an uneven air gap to be formed between the stator iron core and the magnet ring rotor, and thus the electromagnetic noise in the working process of the motor is effectively reduced, meanwhile, the processing cost is also reduced, and when the three-phase brushless direct current motor starts and converts, signals are not needed to be provided by a Hall element, and the installation is more convenient and reliable.
Description
Technical field
The utility model relates to a kind of three-phase brushless dc motor, relates in particular to a kind of stator core that is used for the three-phase brushless dc motor of ceiling fan.
Background technology
Existing ceiling fan generally all is to adopt the monophase ac capacitance-run Induction Motor-Driven, and is as shown in Figure 1, its stator core profile more complicated; Manufacturing procedure is many; Generally need on the stator core just can work, not only wasted the copper cash raw material greatly, and electric machine structure is complicated around two groups of coils; Production cost is than higher; The motor operational efficiency is low, energy consumption big, volume is relatively big, yet adopts the single-phase DC motor can address the above problem preferably as the drive motors of ceiling fan, therefore causes more and more people's attention.But during common single-phase DC machine operation, along with the running of motor can produce electromagnetic noise and electric and magnetic oscillation, then need a kind of brshless DC motor with the single-phase three-phase that converts into, and the shape of stator core also need be done corresponding design.
Summary of the invention
The utility model provides a kind of stator core that is used for the three-phase brushless dc motor of ceiling fan, through the design of stator core shape, and electromagnetic noise and electric and magnetic oscillation when solving direct current machine work.
For achieving the above object, the utility model is taked following technical scheme:
A kind of stator core that is used for the three-phase brushless dc motor of ceiling fan; Comprise stator body; Be provided with the stator axis core at the stator body center, on the stator body excircle, be evenly distributed with 12 teeth that size is identical, the curve that the top of each tooth and the end face of tooth intersect is the non-isocentric circular arc of stator axis core place circle; The top of each tooth all is connected through winding terminal with the bottom, and the root of adjacent teeth connects through arc surface.
Form fixing winding slot between the root of adjacent two teeth, circular arc joint face and the bottom and be used for coiling; This winding slot is simple in structure; Only need one group of coil of coiling just can work, saved copper product, reduced production cost and improved direct current machine efficient simultaneously.Above-mentioned motor comprises stator core, magnet ring rotor and motor shaft; Motor shaft is installed on the stator axis core of stator core; The magnet ring rotor adopts different in nature injecting ferrite; The magnet ring rotor is installed on the skin of stator core, and the circle at magnet ring rotor place and the cylindrical of stator core are the concentric circles of electrical axis.Because the circle at the circle at place, the top of each tooth and stator axis core place is non-concentric circles on the stator core; Then the fenestra at the circle at place, the top of each tooth and magnet ring rotor place is the non-concentric circles of electrical axis on the stator core; Therefore can form non-uniform gap between the top of each tooth and the magnet ring rotor on the stator core, and this non-uniform gap dwindles gradually from two side direction middle part.Just because of on the stator core tip designs of each tooth become this can and the magnet ring rotor between form the shape of non-uniform gap, make and in the machine operation process, can reduce electromagnetic noise effectively; And the top of tooth when being circular arc the surface more level and smooth, can avoid when making machine operation motor when commutation owing to the inhomogeneous electric and magnetic oscillation that causes of the unsmooth magnetic flux that produces in the top of tooth; The bottom of tooth and the end face of tooth intersect the conic section at place, can improve the magnetic flux on stator tooth top to a greater extent when making the motor high speed rotating, make motor more peace and quiet work reposefully.
Technique scheme can also be done following improvement:
Said non-isocentric circular arc all with the cylindrical inscribe of stator body, the curve that the bottom of said each tooth and the end face of tooth intersect is the conic section section, this conic section section is a circular arc.The top of each tooth and the ultimate range between the bottom are 7mm.The winding terminal of adjacent teeth is parallel to each other and is symmetrically distributed along the sagittal plane of stator body cylindrical, and its spacing is 2mm.
The utility model adopts the winding slot of independent one group of fixing coiling, simple in structure, easy to process, security of operation.The tooth tip of stator core be designed to can and the magnet ring rotor between form the shape of non-uniform gap; Electromagnetic noise when having reduced machine operation effectively; Also reduced simultaneously processing cost; And three-phase brushless dc motor is starting, need not by Hall element signal to be provided when changing, and installs more convenient reliable.
Description of drawings
Fig. 1 is the asynchronous machine stator core construction sketch map that prior art adopts single phase alternating current (A.C.);
Fig. 2 is the structural representation of the utility model.
Fig. 3 is an A place enlarged drawing among Fig. 2.
Description of reference numerals: 1-stator body; 2-stator axis core; The 3-tooth; The 31-end face; The 32-top; The 33-bottom; The 34-root; The 35-winding terminal; The 4-non-uniform gap; The 5-winding slot; 6-magnet ring rotor; The non-isocentric circular arc of 7-; The 8-circular arc; The 9-cylindrical; 10-ultimate range; The 11-spacing; The 12-arc surface.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model content is described further.
As shown in Figure 2; The utility model comprises the stator body 1 that is formed by many groups silicon steel plate stacking; Be provided with stator axis core 2 at the center of stator body 1, on stator body 1 excircle, be evenly distributed with 12 teeth 3 that size is identical, the top 32 of tooth 3 is the round non-isocentric circular arc 7 in stator axis core 2 places with the curve that the end face of tooth 3 31 intersects; The bottom 33 of tooth 3 is circular arc 8 with the curve that the end face of tooth 3 31 intersects, and the root 34 of adjacent teeth connects through arc surface 12.Said non-isocentric circular arc 7 all with cylindrical 9 inscribes of stator body 1, the top 32 and the ultimate range between the bottom 33 10 of each tooth are 7mm.The top 32 of each tooth all is connected through winding terminal 35 with bottom 33, and the winding terminal 35 of adjacent teeth is parallel to each other and is symmetrically distributed along the sagittal plane of stator body 1 cylindrical 9, and its spacing is 2mm.
Like Fig. 2, shown in 3; The magnet ring rotor 6 of motor is installed on the skin of stator body 1; And the circle at magnet ring rotor 6 places and the cylindrical 9 of stator body 1 are concentric circles; And the circle at the circle at 32 places, top of each tooth 3 and stator axis core 2 places is non-concentric circles 7; Then the circle at place, the top 32 of each tooth 3 is non-concentric circles with the fenestra at magnet ring rotor 6 places, so can formation non-uniform gap 4 between top 32 and the magnet ring rotor 6 of each tooth 3 on the stator core, and non-uniform gap 4 dwindles in the middle part of two side direction gradually.Just because of on the stator core top 32 of each tooth 3 be designed to this can and magnet ring rotor 6 between form the shape of non-uniform gap 4, make and in the machine operation process, can reduce electromagnetic noise effectively.
As shown in Figure 2; Form fixing winding slot 5 by the winding terminal between the adjacent teeth 35, bottom 33, root 34, arc surface 12 and be used for coiling; Winding mode is: along selected in order 1～No. 12 tooth of the excircle of stator body 1, setting 1,4,7, No. 10 tooth is first group of coiling, and setting 2,5,8, No. 11 teeth is second group of coiling; Setting 3,6,9, No. 12 teeth is the 3rd group of coiling; All coiling groups wind the line in the direction of the clock, and with the transition of cross-line form, the end of all coiling groups joins between same coiling group internal tooth and the tooth.
Obviously; The above-mentioned embodiment of the utility model only be for explain clearly that the utility model does for example; And be not to be the qualification to the utility model execution mode; To those skilled in the art, the variation that on the basis of above-mentioned explanation, can also easily make other form perhaps substitutes, and these change or alternative also will being included within the definite protection range of the utility model.
Claims (6)
1. stator core that is used for the three-phase brushless dc motor of ceiling fan; Comprise stator body; It is characterized in that: said stator body center is provided with the stator axis core; Be evenly distributed with 12 teeth that size is identical on the said stator body excircle, the curve that the top of each tooth and the end face of tooth intersect is the non-isocentric circular arc of stator axis core place circle.
2. the stator core that is used for the three-phase brushless dc motor of ceiling fan as claimed in claim 1 is characterized in that: said non-isocentric circular arc all with the cylindrical inscribe of stator body.
3. the stator core that is used for the three-phase brushless dc motor of ceiling fan as claimed in claim 1; It is characterized in that: the top of said each tooth all is connected through winding terminal with the bottom; The winding terminal of adjacent teeth is parallel to each other and is symmetrically distributed along the sagittal plane of stator body cylindrical; Its spacing is 2mm, and the root of adjacent teeth connects through arc surface.
4. the stator core that is used for the three-phase brushless dc motor of ceiling fan as claimed in claim 1 is characterized in that: the top of said each tooth and the ultimate range between the bottom are 7mm.
5. the stator core that is used for the three-phase brushless dc motor of ceiling fan as claimed in claim 1 is characterized in that: the curve that the bottom of said each tooth and the end face of tooth intersect is the conic section section.
6. the stator core that is used for the three-phase brushless dc motor of ceiling fan as claimed in claim 5 is characterized in that: said conic section section is a circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201052724U CN202488325U (en) | 2012-03-19 | 2012-03-19 | Three-phase brushless direct current motor stator iron core for ceiling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201052724U CN202488325U (en) | 2012-03-19 | 2012-03-19 | Three-phase brushless direct current motor stator iron core for ceiling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202488325U true CN202488325U (en) | 2012-10-10 |
Family
ID=46962713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201052724U Expired - Lifetime CN202488325U (en) | 2012-03-19 | 2012-03-19 | Three-phase brushless direct current motor stator iron core for ceiling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202488325U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346629A (en) * | 2013-06-28 | 2013-10-09 | 日立电梯电机（广州）有限公司 | Stator core and motor comprising same |
-
2012
- 2012-03-19 CN CN2012201052724U patent/CN202488325U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346629A (en) * | 2013-06-28 | 2013-10-09 | 日立电梯电机（广州）有限公司 | Stator core and motor comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 528329, No. 10 Xingye Road, sand mold town, Shunde District, Foshan, Guangdong Patentee after: Foshan Shunde District Jinyue Magnets Co.,Ltd. Address before: 528325 Guangdong city Foshan Province seven Kau Shunde Xingtan Town Industrial Zone No. 8 Patentee before: Foshan Shunde District Jinyue Magnets Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |