CN203674819U - Motor - Google Patents
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- CN203674819U CN203674819U CN201320837915.9U CN201320837915U CN203674819U CN 203674819 U CN203674819 U CN 203674819U CN 201320837915 U CN201320837915 U CN 201320837915U CN 203674819 U CN203674819 U CN 203674819U
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- 230000008901 benefit Effects 0.000 abstract description 6
- 230000004907 flux Effects 0.000 description 10
- 238000004804 winding Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses a motor. The motor comprises a body, a stator assembly and a rotor assembly, wherein the body is internally provided with an accommodating cavity; the stator assembly is arranged in the accommodating cavity and comprises a plurality of block stators, and each of the block stators is provided with two magnetic pole tips; and the rotor assembly is arranged in the stator assembly, a first distance is reserved between each of the magnetic pole tips and the rotor assembly in the radial direction of the rotor assembly, a second distance is reserved between a part of each of the block stators and the rotor assembly in the radial direction of the rotor assembly, and the first distance is greater than the second distance. The motor disclosed according to the embodiment of the utility model has the advantages of good operation performance, low harmonic noise, large starting torque and the like.
Description
Technical field
The utility model relates to a kind of motor.
Background technology
The main winding and auxiliary winding of piecemeal motor is all to adopt to concentrate winding, relatively traditional distributed winding formula motor, and concentrating the advantage of the piecemeal motor of winding is to realize automated production.But from motor performance aspect, compare traditional distributed winding formula motor, the poor-performing of piecemeal motor, especially staring torque is less.
In fan art, consumer requires each grade of rotating speed of fan to pull open, and the most high-grade air quantity wants large, and it is little and soft comfortable that deep low gear air quantity is wanted.More and more higher to the requirement of motor performance like this, especially low-grade rotating speed to be dropped to the most rational numerical value, but bring so other problem, the low-grade starting problem of fan.The low-grade staring torque of existing motor is little, if low-grade rotating speed is done low, fan be difficult to start.
Utility model content
The utility model is intended at least solve one of technical problem existing in prior art.For this reason, an object of the present utility model is to propose a kind of motor.
To achieve these goals, according to the utility model proposes a kind of motor, described motor comprises: body, has container cavity in described body; Field frame assembly, described field frame assembly is located in described container cavity, and described field frame assembly comprises multiple block stators, and each described block stator has two magnetic pole tips; And rotor assembly, described rotor assembly is located in described field frame assembly, wherein each described magnetic pole tips and described rotor assembly are in upwards interval the first distance of the footpath of described rotor assembly, a part for each described block stator and described rotor assembly are at upwards interval second distance of the footpath of described rotor assembly, and described the first distance is greater than described second distance.
According to motor of the present utility model by making first to be greater than second distance δ apart from δ c, thereby the length that can make the first air gap is greater than the length of interstice, not only can improve thus the runnability of described motor, especially reduce the harmonic noise of described motor, and can increase the staring torque of described motor.Therefore, there is the advantages such as runnability is good, harmonic noise is low, staring torque is large according to motor of the present utility model.
In addition, also there is following additional technical feature according to motor of the present utility model:
The magnetic pole surfaces of each described block stator comprises: main pole surface, and first gradual change magnetic pole surfaces and the second gradual change magnetic pole surfaces, the first end of described the first gradual change magnetic pole surfaces is connected with the first end on described main pole surface and described the first gradual change magnetic pole surfaces is extended from described main pole surface to the direction away from described rotor assembly, the first end of described the second gradual change magnetic pole surfaces is connected with second end on described main pole surface and described the second gradual change magnetic pole surfaces is extended from described main pole surface to the direction away from described rotor assembly, described the first gradual change magnetic pole surfaces is symmetrical with the relative described main pole of described the second gradual change magnetic pole surfaces surface, the second end that described in one of them, magnetic pole tips are positioned at the second end of described the first gradual change magnetic pole surfaces and described in another, magnetic pole tips are positioned at described the second gradual change magnetic pole surfaces, described main pole surface and described rotor assembly be second distance described in interval upwards in the footpath of described rotor assembly.Can make thus the structure of described motor more reasonable.
Described the first gradual change magnetic pole surfaces is plane, and described the second gradual change magnetic pole surfaces is plane.Can make thus the structure of described motor more reasonable.
Described the first gradual change magnetic pole surfaces is curved surface, and described the second gradual change magnetic pole surfaces is curved surface.Can make thus the structure of described motor more reasonable.
The part that described the first gradual change magnetic pole surfaces is the face of cylinder, the part that described the second gradual change magnetic pole surfaces is the face of cylinder.Can make thus the structure of described motor more reasonable.
The ratio of the central angle that central angle corresponding to the main pole surface of each described block stator is corresponding with each described block stator is 0.4-0.55:1.Can further improve thus the runnability of described motor, further reduce the harmonic noise of described motor, further increase the staring torque of described motor.
Described the first distance is 2.0-3.5:1 with the ratio of described second distance.Can further improve thus the runnability of described motor, further reduce the harmonic noise of described motor, further increase the staring torque of described motor.
Described the first distance is 2.0-2.5:1 with the ratio of described second distance.Can further improve thus the runnability of described motor, further reduce the harmonic noise of described motor, further increase the staring torque of described motor.
Described body comprises and front end cover assembly and be located at the rear end cap assembly on described front end cover assembly limits described container cavity between wherein said front end cover assembly and described rear end cap assembly, and described field frame assembly is located on described rear end cap assembly.Can make thus the structure of described motor more reasonable.
Described front end cover assembly and described rear end cap assembly are riveted together.Can make thus the structure of described motor more firm.
Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is according to the cutaway view of the motor of the utility model embodiment;
Fig. 2 is the partial structurtes schematic diagram according to the motor of the utility model embodiment;
Fig. 3 is the partial structurtes schematic diagram according to the motor of the utility model embodiment;
Fig. 4 is according to the structural representation of the block stator of the motor of the utility model embodiment;
Fig. 5 is the enlarged drawing of the a-quadrant in Fig. 4;
Fig. 6 is according to the structural representation of the block stator of the motor of the utility model embodiment;
Fig. 7 is the enlarged drawing in the B region in Fig. 6;
Fig. 8 is the enlarged drawing in the C region in Fig. 3.
Embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of instructions such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of device or the element of instruction or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " be only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand the concrete meaning of above-mentioned term in the utility model.
Describe according to the motor 1 of the utility model embodiment below with reference to Fig. 1-Fig. 8.As Figure 1-Figure 8, comprise body 10, field frame assembly 20 and rotor assembly 30 according to the motor 1 of the utility model embodiment.
In body 10, there is container cavity 101.Field frame assembly 20 is located in container cavity 101, and field frame assembly 20 comprises multiple block stators 201, and each block stator 201 has two magnetic pole tips 2011.Rotor assembly 30 is located in field frame assembly 20 (being that rotor assembly 30 is positioned at container cavity 101).Wherein, each magnetic pole tips 2011 and rotor assembly 30 in the footpath of rotor assembly 30 upwards interval first apart from δ c, a part for each block stator 201 and rotor assembly 30 are at upwards interval second distance δ of the footpath of rotor assembly 30, and described first is greater than described second distance δ apart from δ c.
In other words, the distance in a described part for each block stator 201 and the center of circle of rotor assembly 30 is R1, and each magnetic pole tips 2011 are R2 with the distance in the center of circle of rotor assembly 30, and R2 is greater than R1.
Be greater than described second distance δ due to described first apart from δ c, therefore the length of the first air gap between magnetic pole tips 2011 and the rotor assembly 30 of each block stator 201 is greater than the length of the interstice between a described part and the rotor assembly 30 of each block stator 201.Air gap is larger, and magnetic resistance is just larger.Because the magnetic line of force always tries hard to shorten its path, therefore the magnetic flux density in the first air gap is always less than the magnetic flux density in interstice.From electromagnetism analogy, the magnetic resistance of the first air gap and the magnetic resistance of interstice are in parallel, and the large person's magnetic flux (electric current) of magnetic resistance (resistance) is little.
Therefore, by making the length of the first air gap be greater than the length of interstice, thereby can make the air-gap flux of each block stator 201 under extremely become similar staircase waveform or ramp waveform from similar square wave, can reduce thus harmonic component, and then can improve the runnability of motor 1, especially reduce the harmonic noise of motor 1.
And, by making the length of the first air gap be greater than the length of interstice, thereby can increase the staring torque of motor 1, this also just the feature of the magnetic line of force cause.At the intersection of the first air gap and interstice, the block stator 201s of part magnetic flux from interstice are to the rotor assembly 30 on the first air gap.That is to say, the magnetic line of force is twisted and warped to the first air gap place, thereby makes the path of the magnetic line of force elongated, and it is large that magnetic resistance becomes.Rotor assembly 30 makes every effort to be orientated with magnetic circuit reluctance minimum, has so just produced a torque to interstice direction by the first air gap.Because the first air gap is positioned at magnetic pole tips 2011 places of block stator 201, this torque is consistent with rotating magnetic field direction, and therefore, in the time that motor 1 starts, its staring torque increases.
According to the motor 1 of the utility model embodiment by making first to be greater than second distance δ apart from δ c, thereby the length that can make the first air gap is greater than the length of interstice, not only can improve thus the runnability of motor 1, especially reduce the harmonic noise of motor 1, and can increase the staring torque of motor 1.Therefore, there is the advantages such as runnability is good, harmonic noise is low, staring torque is large according to the motor 1 of the utility model embodiment.
To during for fan, can greatly reduce the deep low gear air quantity of fan, thereby can make fan blow out soft comfortable wind according to the motor 1 of the utility model embodiment.
Particularly, a described part for each block stator 201 can be between two of this block stator 201 magnetic pole tips 2011.Rotor assembly 30 radially with field frame assembly 20 radially can be identical.Upwards interval first is apart from δ c in the footpath of rotor assembly 30 for the magnetic pole surfaces of each magnetic pole tips 2011 and rotor assembly 30, and a described part for each block stator 201 and the magnetic pole surfaces of rotor assembly 30 are at upwards interval second distance δ of the footpath of rotor assembly 30
As Figure 4-Figure 7, in embodiment more of the present utility model, the magnetic pole surfaces of each block stator 201 can comprise main pole surface 2012, the first gradual change magnetic pole surfaces 2013 and the second gradual change magnetic pole surfaces 2014.
The first end of the first gradual change magnetic pole surfaces 2013 can be connected with the first end on main pole surface 2012, and the first gradual change magnetic pole surfaces 2013 can be extended from main pole surface 2012 to the direction away from rotor assembly 30.The first end of the second gradual change magnetic pole surfaces 2014 can be connected with second end on main pole surface 2012, and the second gradual change magnetic pole surfaces 2014 can be extended from main pole surface 2012 to the direction away from rotor assembly 30.The first gradual change magnetic pole surfaces 2013 can relative main pole surface 2012 symmetries with the second gradual change magnetic pole surfaces 2014.Wherein, magnetic pole tips 2011 can be positioned at the second end of the first gradual change magnetic pole surfaces 2013, and another magnetic pole tips 2011 can be positioned at the second end of the second gradual change magnetic pole surfaces 2014, main pole surface 2012 upwards can interval second distance δ in the footpath of rotor assembly 30 with rotor assembly 30.Can make thus the structure of motor 1 more reasonable.
Particularly, the first gradual change magnetic pole surfaces 2013 can upwards be extended from main pole surface 2012 to the direction away from rotor assembly 30 in the footpath of rotor assembly 30, and the second gradual change magnetic pole surfaces 2014 can upwards be extended from main pole surface 2012 to the direction away from rotor assembly 30 in the footpath of rotor assembly 30.The intersection on the first gradual change magnetic pole surfaces 2013 and main pole surface 2012 is as shown in the label 2017 in Fig. 4.
As shown in Figure 8, between the first gradual change magnetic pole surfaces 2013 and rotor assembly 30, can form gradual change air gap 2015, between the second gradual change magnetic pole surfaces 2014 and rotor assembly 30, gradual change air gap 2015 can be formed, between main pole surface 2012 and rotor assembly 30, main air gap 2016 can be formed.
Be greater than second distance δ due to first apart from δ c, therefore the length of gradual change air gap 2015 is greater than the length of main air gap 2016.Air gap is larger, and magnetic resistance is just larger.Because the magnetic line of force always tries hard to shorten its path, therefore the magnetic flux density in gradual change air gap 2015 is always less than the magnetic flux density in main air gap 2016.From electromagnetism analogy, the magnetic resistance of the magnetic resistance of gradual change air gap 2015 and main air gap 2016 is in parallel, and the large person's magnetic flux (electric current) of magnetic resistance (resistance) is little.
Therefore, by making the length of gradual change air gap 2015 be greater than the length of main air gap 2016, thereby can make the air-gap flux of each block stator 201 under extremely become similar staircase waveform or ramp waveform from similar square wave, can reduce thus harmonic component, and then can improve the runnability of motor 1, especially reduce the harmonic noise of motor 1.
And, by making the length of gradual change air gap 2015 be greater than the length of main air gap 2016, thereby can increase the staring torque of motor 1, this also just the feature of the magnetic line of force cause.Intersection at gradual change air gap 2015 with main air gap 2016, the block stator 201s of part magnetic flux from main air gap 2016 are to the rotor assembly 30 on gradual change air gap 2015.That is to say, the magnetic line of force is twisted and warped to gradual change air gap 2015 places, thereby makes the path of the magnetic line of force elongated, and it is large that magnetic resistance becomes.Rotor assembly 30 makes every effort to be orientated with magnetic circuit reluctance minimum, has so just produced a torque to main air gap 2016 directions by gradual change air gap 2015.Because gradual change air gap 2015 is positioned at magnetic pole tips 2011 places of block stator 201, this torque is consistent with rotating magnetic field direction, and therefore, in the time that motor 1 starts, its staring torque increases.
As shown in Figure 4 and Figure 5, in an embodiment of the present utility model, the first gradual change magnetic pole surfaces 2013 can be plane, and the second gradual change magnetic pole surfaces 2014 can be plane.Can make thus the structure of motor 1 more reasonable.In other words, the first gradual change magnetic pole surfaces 2013 can be straight line with the intersecting lens of horizontal plane, and the second gradual change magnetic pole surfaces 2014 can be straight line with the intersecting lens of horizontal plane.
In another embodiment of the present utility model, as shown in Figure 6 and Figure 7, the first gradual change magnetic pole surfaces 2013 can be curved surface, and the second gradual change magnetic pole surfaces 2014 can be curved surface.Can make thus the structure of motor 1 more reasonable.That is to say, the first gradual change magnetic pole surfaces 2013 can be curve with the intersecting lens of horizontal plane, and the second gradual change magnetic pole surfaces 2014 can be curve with the intersecting lens of horizontal plane.
As shown in Figure 6 and Figure 7, advantageously, the first gradual change magnetic pole surfaces 2013 can be the part on the face of cylinder, and the second gradual change magnetic pole surfaces 2014 can be the part on the face of cylinder.Can make thus the structure of motor 1 more reasonable.That is to say, the first gradual change magnetic pole surfaces 2013 can be circular arc with the intersecting lens of horizontal plane, and the second gradual change magnetic pole surfaces 2014 can be circular arc with the intersecting lens of horizontal plane.
In an example of the present utility model, first can be 2.0-3.5:1 apart from δ c with the ratio of second distance δ.Can further improve thus the runnability of motor 1, further reduce the harmonic noise of motor 1, further increase the staring torque of motor 1.
Preferably, first can be 2.0-2.5:1 apart from δ c with the ratio of second distance δ.Can further improve thus the runnability of motor 1, further reduce the harmonic noise of motor 1, further increase the staring torque of motor 1.
In a concrete example of the present utility model, the ratio of the central angle that the central angle of main pole surface 2012 correspondences of each block stator 201 is corresponding with each block stator 201 is 0.4-0.55:1.Can further improve thus the runnability of motor 1, further reduce the harmonic noise of motor 1, further increase the staring torque of motor 1.In other words, the ratio of the central angle of the first gradual change magnetic pole surfaces 2013 correspondences of each block stator 201 and the central angle sum of the second gradual change magnetic pole surfaces 2014 correspondences central angle corresponding with each block stator 201 is 0.15-0.20:1.
As shown in Figure 1, in examples more of the present utility model, body 10 can comprise front end cover assembly 102 and be located at the rear end cap assembly 103 on front end cover assembly 102.Wherein, between front end cover assembly 102 and rear end cap assembly 103, can limit container cavity 101, field frame assembly 20 can be located on rear end cap assembly 103.Can make thus the structure of motor 1 more reasonable.
Particularly, front end cover assembly 102 can be riveted together with rear end cap assembly 103.Can make thus the structure of motor 1 more firm.
It will be appreciated by persons skilled in the art that according to the motor 1 of the utility model embodiment and can also comprise capacitor 40, tooth case 50 and motor down-lead 60.Capacitor 40, tooth case 50 and motor down-lead 60 can be known and irrelevant with inventive point of the present utility model, therefore no longer describe in detail.
Particularly, tooth case 50 can be fixed on rear end cap assembly 103 by screw 70.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present utility model and aim, can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present utility model is limited by claim and equivalent thereof.
Claims (10)
1. a motor, is characterized in that, comprising:
Body, has container cavity in described body;
Field frame assembly, described field frame assembly is located in described container cavity, and described field frame assembly comprises multiple block stators, and each described block stator has two magnetic pole tips; With
Rotor assembly, described rotor assembly is located in described field frame assembly, wherein each described magnetic pole tips and described rotor assembly are in upwards interval the first distance of the footpath of described rotor assembly, a part for each described block stator and described rotor assembly are at upwards interval second distance of the footpath of described rotor assembly, and described the first distance is greater than described second distance.
2. motor according to claim 1, is characterized in that, the magnetic pole surfaces of each described block stator comprises:
Main pole surface; And
The first gradual change magnetic pole surfaces and the second gradual change magnetic pole surfaces, the first end of described the first gradual change magnetic pole surfaces is connected with the first end on described main pole surface and described the first gradual change magnetic pole surfaces is extended from described main pole surface to the direction away from described rotor assembly, the first end of described the second gradual change magnetic pole surfaces is connected with second end on described main pole surface and described the second gradual change magnetic pole surfaces is extended from described main pole surface to the direction away from described rotor assembly, described the first gradual change magnetic pole surfaces is symmetrical with the relative described main pole of described the second gradual change magnetic pole surfaces surface, the second end that described in one of them, magnetic pole tips are positioned at the second end of described the first gradual change magnetic pole surfaces and described in another, magnetic pole tips are positioned at described the second gradual change magnetic pole surfaces, described main pole surface and described rotor assembly be second distance described in interval upwards in the footpath of described rotor assembly.
3. motor according to claim 2, is characterized in that, described the first gradual change magnetic pole surfaces is plane, and described the second gradual change magnetic pole surfaces is plane.
4. motor according to claim 2, is characterized in that, described the first gradual change magnetic pole surfaces is curved surface, and described the second gradual change magnetic pole surfaces is curved surface.
5. motor according to claim 4, is characterized in that, the part that described the first gradual change magnetic pole surfaces is the face of cylinder, the part that described the second gradual change magnetic pole surfaces is the face of cylinder.
6. motor according to claim 2, is characterized in that, the ratio of the central angle that central angle corresponding to the main pole of each described block stator surface is corresponding with each described block stator is 0.4-0.55:1.
7. motor according to claim 1, is characterized in that, described the first distance is 2.0-3.5:1 with the ratio of described second distance.
8. motor according to claim 7, is characterized in that, described the first distance is 2.0-2.5:1 with the ratio of described second distance.
9. motor according to claim 1, it is characterized in that, described body comprises front end cover assembly and is located at the rear end cap assembly on described front end cover assembly, between wherein said front end cover assembly and described rear end cap assembly, limit described container cavity, described field frame assembly is located on described rear end cap assembly.
10. motor according to claim 9, is characterized in that, described front end cover assembly and described rear end cap assembly are riveted together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320837915.9U CN203674819U (en) | 2013-12-18 | 2013-12-18 | Motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320837915.9U CN203674819U (en) | 2013-12-18 | 2013-12-18 | Motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203674819U true CN203674819U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320837915.9U Expired - Lifetime CN203674819U (en) | 2013-12-18 | 2013-12-18 | Motor |
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| Country | Link |
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| CN (1) | CN203674819U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107332415A (en) * | 2017-07-20 | 2017-11-07 | 安徽美芝精密制造有限公司 | Motor, compressor and air conditioner |
| CN108599406A (en) * | 2018-01-26 | 2018-09-28 | 捷和电机制品(深圳)有限公司 | Single-phase brushless direct-current motor |
-
2013
- 2013-12-18 CN CN201320837915.9U patent/CN203674819U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107332415A (en) * | 2017-07-20 | 2017-11-07 | 安徽美芝精密制造有限公司 | Motor, compressor and air conditioner |
| CN108599406A (en) * | 2018-01-26 | 2018-09-28 | 捷和电机制品(深圳)有限公司 | Single-phase brushless direct-current motor |
| CN108599406B (en) * | 2018-01-26 | 2024-04-09 | 捷和电机制品(深圳)有限公司 | Single-phase brushless DC motor |
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| C14 | Grant of patent or utility model | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20140625 |