CN101272065A - Low power ventilation fan - Google Patents
Low power ventilation fan Download PDFInfo
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- CN101272065A CN101272065A CNA2008100281230A CN200810028123A CN101272065A CN 101272065 A CN101272065 A CN 101272065A CN A2008100281230 A CNA2008100281230 A CN A2008100281230A CN 200810028123 A CN200810028123 A CN 200810028123A CN 101272065 A CN101272065 A CN 101272065A
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- ventilation blower
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Abstract
A low power ventilator includes an impeller and an electric motor directly driving the impeller. The electric motor includes a stator and a rotor. The stator includes an iron core and a winding. The invention is characterized in that the iron core has four slots; the winding has two phases; each phase relates to two polar phase groups; the spans of the polar phase groups are all one slot; the two windings are connected into single-phase capacitance operation; the design has the simple structure of a shaded-pole motor which can not only avoid the defect of a shaded-pole short loop, but also has the excellent performance of capacitance operation.
Description
Technical field
The present invention relates to a kind of low power ventilation fan, relate in particular to the stator structure of its motor, in International Patent Classification (IPC), classification belongs to H02K1/16.
Background technology
Low power ventilation fan uses single-phase capacitor running or shaded pole asynchronous motor to drive traditionally, and the former various aspects of performance is all good than the latter, and cost is higher but structure is partial to complexity.Mainly be the stator of motor usually the former is multiple-grooved distributed winding structure, the groove number is no less than 8; The latter then concentrates winding construction for few groove; Groove number no more than 4.The latter is relatively simple for structure and material usage is less, but the split-pole short-circuited conducting sleeve that it is used to start, still big electric current circulates after entering normal operation, this electric current effect in few of front almost after motor runs well, but consume bigger power, cause efficient to reduce and unnecessarily increase generating heat.In addition, shaded pole motor groove number is few, and more serious De Tooth harmonic wave is arranged, and the waveform ovality of rotating magnetic field is bigger, and is also quite influential to the performance of each side.
Summary of the invention
Technical problem to be solved by this invention is, proposes a kind of low power ventilation fan, and it uses better simply structure still can have preferable performance.
The technical scheme that the present invention solve the technical problem is, a kind of low power ventilation fan comprises the impeller and the direct motor of drives impeller; Motor comprises stator and rotor, and stator comprises iron core and winding, it is characterized in that: described iron core is 4 grooves; Winding is two-phase, and two utmost points of every phase are organized mutually, and the utmost point is organized span mutually and is 1 groove, and it is single-phase capacitor running that two-phase winding connects;
The effect of this scheme is the simple structure with shaded pole motor, but its winding connects the waveform of having avoided using the shortcoming of split-pole short-circuited conducting sleeve and can having adjusted rotating magnetic field for capacitor operating and is tending towards circle, help overcoming De Tooth harmonic problem Xia few groove situation, thereby the performance of each side has bigger improvement, especially the improvement of startability can guarantee that ventilation blower starts smoothly under the situation that stronger reverse wind is arranged.
One of its further design is that this motor is an inner rotor motor, and described stator core stamping sheet is square 4 jiaos of circumference profiles that circular arc is arranged, and the facewidth such as 4 grooves are uniform, and flute profile is following two kinds of patterns:
One is the groove of remaining silent, and groove is positioned at 4 straightways, and parallel teeth is positioned at 4 jiaos of arc sections; The bottom of groove is preferably designed as the triangle of protuberance or trapezoidal, and the center line of this triangle or trapezoidal waist tooth adjacent thereto is parallel.
It two is an open slot, and groove is positioned at 4 jiaos of arc sections, and tooth is positioned at 4 straightways;
Circumference profile punching has the higher material utilance of opening.When being designed to remain silent groove, need be designed to tooth portion to punching and separate earlier with yoke portion, put into the structure of rejoining behind the winding.Be positioned at 4 jiaos of more abundant arc sections of yoke portion area to the tooth design this moment, can make tooth, yoke part from locating higher intensity, helps processing and manufacturing.Meanwhile can also be the triangle or trapezoidal of the bottom design of groove for protuberance, part except that the rectangular area that winding takies is had more fully utilize, fall to reduce yoke portion magnetic pressure, thereby reduce no-load current.Wherein, making the center line of this triangle or trapezoidal waist tooth adjacent thereto parallel, is that the iron core of this form is got the more reasonable use, and don't influences the optimised form of winding assembling.
Further two of design is these motor, and described winding two-phase is connected like this with capacitor, wherein one be access to power supply again with being in series with another after capacitor is in parallel.This mode of being connected in series can make the phase winding operating voltage reduce and the electric current increase, thereby is fit to use thicker the line footpath and the number of turn less, for the low power ventilation fan motor, can reduce the requirement to manufacturing process and enamelled wire.
Technical solution of the present invention and modular design thereof will further specify in embodiment.
Description of drawings
The following drawings is used to illustrate the specific embodiment of the present invention.
Fig. 1 is the present invention the 1st embodiment ventilator structure master Visual figure;
Fig. 2 is that Fig. 1 ventilator structure K-K cuts open Visual figure;
Fig. 3 is the present invention's the 1st embodiment ventilator stator punching schematic diagram;
Tooth portion schematic diagram when Fig. 4 is the separation of the present invention's the 1st embodiment ventilator stator punching tooth yoke;
Yoke portion schematic diagram when Fig. 5 is the separation of the present invention's the 1st embodiment ventilator stator punching tooth yoke;
Fig. 6 is that the present invention's the 1st embodiment ventilation blower winding launches and winding diagram;
Fig. 7 is the present invention's the 2nd embodiment ventilator stator punching schematic diagram.
Embodiment
The present invention's the 1st embodiment ventilator structure as depicted in figs. 1 and 2.This is a family expenses small-power axial-flow type ventilation fan, mainly comprises impeller 1 and motor 2, and motor 2 comprises stator 3 and cage rotor 4.Stator 3 comprises an iron core 5 of being made up of 4 salient poles, and each salient pole is inserted in one concentrates winding 6.
The punching of iron core 5 is 4 teeth, 4 grooves, and groove is positioned at 4 straightways, and tooth is positioned at 4 jiaos of arc sections; Flute profile is the groove of remaining silent, and separable is tooth portion 7 and yoke portion 8 two parts, this two part in conjunction with after shape as shown in Figure 3, during separation tooth portion shape as shown in Figure 4, yoke portion shape is as shown in Figure 5.4 concentrated windings are wound in skeleton 9 respectively, are inserted in tooth portion 7 respectively, and yoke portion 8 is combined with tooth portion 7, are fixed in casing 10 at last, see Fig. 2.
Fig. 6 is that winding launches and winding diagram.Principal phase 11 is made up of 2 windings in series that are positioned at two salient poles of abscissa axis at 45; Parafacies 12 is made up of 2 windings in series of two salient poles that are positioned at the axis that becomes 135 ° with abscissa, and parafacies 12 2 end shunt capacitors 13 backs and principal phase 11 series connections are toward the 220V AC power.Certainly, also can adopt behind the conventional parafacies two end series capacitors and principal phase 11 modes that are access to power supply in parallel.Two windings of every phase by around to the annexation of first and last end, can be according to the rotating speed of ventilation blower needs, be connected to 2 utmost points (during higher rotation speed) or 4 utmost points (than the slow-speed of revolution time).
The present invention's the 2nd embodiment ventilation blower mainly is that stator core is different with the difference of the 1st embodiment.Fig. 7 is the present invention's the 2nd embodiment ventilator stator punching schematic diagram.The groove of this stator core stamping sheet is positioned at 4 jiaos of arc sections, and tooth is positioned at 4 straightways; Flute profile is an open slot, and do not separate structure for common tooth yoke, the form that can adopt conventional diffusing embedding winding is behind air core coil in the embedded groove, preferably adopt special-purpose interior coil winding machine that enamelled wire directly is wound on each tooth post, can significantly reduce the consumption of enamelled wire and the resistance of winding, thereby improve the efficient of ventilation blower.
Because the groove number is few, slot ripples is more serious, needs the shape of stator tooth two tip portions is suitably designed for this reason, and the width of two tip portions dwindles gradually and makes magnetic circuit saturated gradually, its magnetic field space distributes and can use finite element analysis and can reach design more accurately near sinusoidal.For asynchronous motor, also should adopt suitable rotor groove cooperation, rational skewed slot and rotor resistance, with further startability and other performance of improving ventilation blower.Because the ventilating machinary staring torque is little, take above-mentioned measure after, generally can meet the demands.Also should be noted that the number of blades and the rotating speed of fan impeller, avoid resonating, improve the vibration and noise of ventilation blower with slot ripples.
The present invention also can be used for the ventilation blower of outer rotor motor except that being used for the inner rotor motor ventilation blower.The core of the stator punching of outer rotor motor has higher stock utilization than inner rotor motor.
In addition, the present invention also can be applicable to the ventilation blower of permanent magnet motor.The difference of the ventilation blower of permanent magnet motor and the ventilation blower of asynchronous motor is that mainly its rotor uses permanent magnetic material.To its rotor by suitable shape dash magnetic head towards magnetic, its magnetic field space is distributed near sinusoidal, to improve the few more serious problem of slot ripples of groove number.
Claims (6)
1, a kind of low power ventilation fan comprises the impeller and the direct motor of drives impeller; Motor comprises stator and rotor, and stator comprises iron core and winding, it is characterized in that: described iron core is 4 grooves; Winding is two-phase, and two utmost points of every phase are organized mutually, and the utmost point is organized span mutually and is 1 groove, and it is single-phase capacitor running that two-phase winding connects.
2, according to the described ventilation blower of claim 1, it is characterized in that: described motor is an inner rotor motor, and described stator core stamping sheet is square 4 jiaos of circumference profiles that circular arc is arranged, and the facewidth such as 4 grooves are uniform.
3, according to the described ventilation blower of claim 2, it is characterized in that: described stator core stamping sheet flute profile is the groove of remaining silent, and groove is positioned at 4 straightways, and tooth is positioned at 4 jiaos of arc sections.
4, according to the described ventilation blower of claim 3, it is characterized in that: the bottom of described stator core stamping sheet flute profile is the triangle or trapezoidal of protuberance, and the center line of this triangle or trapezoidal waist tooth adjacent thereto is parallel.
5, according to the described ventilation blower of claim 2, it is characterized in that: described stator core stamping sheet flute profile is an open slot, and groove is positioned at 4 jiaos of arc sections, and tooth is positioned at 4 straightways.
6, according to claim 1 or claim 2 or claim 3 or claim 4 or the described ventilation blower of claim 5, it is characterized in that: one in the two-phase of described motor winding is access to power supply again with being in series with another after capacitor is in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100281230A CN101272065A (en) | 2008-05-14 | 2008-05-14 | Low power ventilation fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100281230A CN101272065A (en) | 2008-05-14 | 2008-05-14 | Low power ventilation fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101272065A true CN101272065A (en) | 2008-09-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100281230A Pending CN101272065A (en) | 2008-05-14 | 2008-05-14 | Low power ventilation fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101272065A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280946A (en) * | 2010-06-09 | 2011-12-14 | 王金山 | Highly energy-saving combined stator motor |
| CN102437659A (en) * | 2011-12-23 | 2012-05-02 | 芜湖博耐尔汽车电气系统有限公司 | Stator structure of electric compressor |
| WO2013056483A1 (en) * | 2011-10-17 | 2013-04-25 | Chan Wai Hei | Electric motor stator of capacitive operation type and manufacturing method therefor |
| CN106026580A (en) * | 2016-05-20 | 2016-10-12 | 刘新昆 | Alternating current capacitor motor with starting operating characteristic of direct current motor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB814052A (en) * | 1956-05-29 | 1959-05-27 | Asea Ab | Pole system for a low powered alternating current motor |
| CN2075396U (en) * | 1990-08-12 | 1991-04-17 | 石家庄市电机厂 | Stator core strip for single-phase asynchronous motor |
| CN2265025Y (en) * | 1996-02-28 | 1997-10-15 | 郑明瑜 | Two-winding capacitor motor |
| CN101090222A (en) * | 2007-05-14 | 2007-12-19 | 刘新昆 | Capacity regulating salient-pole AC single phase capacitor motor |
| CN201025688Y (en) * | 2007-02-09 | 2008-02-20 | 深圳市正郎机电科技有限公司 | A small single phase capacitor electromotor |
| JP2008104288A (en) * | 2006-10-19 | 2008-05-01 | Matsushita Electric Ind Co Ltd | Capacitor motor, and manufacturing method therefor |
-
2008
- 2008-05-14 CN CNA2008100281230A patent/CN101272065A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB814052A (en) * | 1956-05-29 | 1959-05-27 | Asea Ab | Pole system for a low powered alternating current motor |
| CN2075396U (en) * | 1990-08-12 | 1991-04-17 | 石家庄市电机厂 | Stator core strip for single-phase asynchronous motor |
| CN2265025Y (en) * | 1996-02-28 | 1997-10-15 | 郑明瑜 | Two-winding capacitor motor |
| JP2008104288A (en) * | 2006-10-19 | 2008-05-01 | Matsushita Electric Ind Co Ltd | Capacitor motor, and manufacturing method therefor |
| CN201025688Y (en) * | 2007-02-09 | 2008-02-20 | 深圳市正郎机电科技有限公司 | A small single phase capacitor electromotor |
| CN101090222A (en) * | 2007-05-14 | 2007-12-19 | 刘新昆 | Capacity regulating salient-pole AC single phase capacitor motor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280946A (en) * | 2010-06-09 | 2011-12-14 | 王金山 | Highly energy-saving combined stator motor |
| WO2013056483A1 (en) * | 2011-10-17 | 2013-04-25 | Chan Wai Hei | Electric motor stator of capacitive operation type and manufacturing method therefor |
| CN102437659A (en) * | 2011-12-23 | 2012-05-02 | 芜湖博耐尔汽车电气系统有限公司 | Stator structure of electric compressor |
| CN106026580A (en) * | 2016-05-20 | 2016-10-12 | 刘新昆 | Alternating current capacitor motor with starting operating characteristic of direct current motor |
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Application publication date: 20080924 |