CN106899107A - Small-sized ventilation fan driven by single-phase self-starting permanent magnet synchronous motor - Google Patents
Small-sized ventilation fan driven by single-phase self-starting permanent magnet synchronous motor Download PDFInfo
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- CN106899107A CN106899107A CN201710136467.2A CN201710136467A CN106899107A CN 106899107 A CN106899107 A CN 106899107A CN 201710136467 A CN201710136467 A CN 201710136467A CN 106899107 A CN106899107 A CN 106899107A
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- Prior art keywords
- stator
- poles
- impeller
- rotor
- permanent magnet
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- 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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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 9
- 238000009423 ventilation Methods 0.000 title claims description 14
- 238000004804 winding Methods 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 17
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims 1
- 229910000859 α-Fe Inorganic materials 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 2
- 230000001154 acute effect Effects 0.000 abstract 1
- 229910001004 magnetic alloy Inorganic materials 0.000 abstract 1
- 230000010349 pulsation Effects 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- 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
- 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
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A small-sized ventilator driven by a single-phase self-starting permanent magnet synchronous motor comprises: an impeller; a motor for directly driving the impeller, wherein a stator winding of the motor is connected to a single-phase power supply through a control circuit according to a specified winding direction, the width of an air gap between a permanent magnet rotor and a stator, the number of which is the same as the number of stator poles, is narrowed in a specified rotation direction under each pole, so that in a free state, the axis of each pole of the rotor deflects by an acute angle along the rotation direction by taking the axis of the closest stator pole as a reference; the number of poles of the stator is 2, and the diameter of the impeller is not more than 100 mm; or the number of poles of the stator is 4, and the diameter of the impeller is not more than 150 mm; the method is characterized in that: the cylindrical surface of the permanent magnet rotor is fastened in a cylinder made of soft magnetic alloy. This design can attenuate the vibration noise caused by the rotation speed pulsation.
Description
Technical field
The present invention relates to the small-sized ventilation fan that a kind of single-phase self-starting permanent magnet synchronous motor drives, more particularly to its machine
The cooperation of tool, electromagnetic structure；In International Patent Classification (IPC), classification belongs to F04D 25/08.
Background technology
Small-sized ventilation fan quite needs manufacture low cost and energy saving in running using extensive, long operational time.Changed for conventional small
With the relatively low situation of Asynchronous Motor Driving efficiency, prior art proposes to change to be driven by single-phase self-starting permanent magnet synchronous motor gas fan
Dynamic and energy-conservation and small volume and cost are relatively low, but there are Instantaneous Speed Fluctuations and cause vibration noise during operating.The existing skill
The earlier application CN201510650460.3 of the visible the applicant of art.
The content of the invention
The technical problems to be solved by the invention are that it is small-sized that a kind of single-phase self-starting permanent magnet synchronous motor of proposition drives
Ventilation fan, can there is relatively low vibration noise, and cost is relatively low.
The technical scheme that the present invention solves the technical problem is, what a kind of single-phase self-starting permanent magnet synchronous motor drove
Small-sized ventilation fan, including：
--- impeller；
--- the motor of the direct drive impeller, its stator winding is by regulation around to through controlling circuit to be access to single-phase electricity
The width of air gap is narrowed in each pole lower edge regulation direction of rotation between source, with stator poles identical p-m rotor and stator, because
And in a free state, the axis of each pole of rotor with the axis of the pole of hithermost stator one as reference, it is inclined along the direction of rotation
Turn a sharp angle；
--- the number of poles of the stator is 2 poles, and impeller diameter is not more than 100mm；Or the number of poles of stator is 4 poles, impeller
Diameter is not more than 150mm；
It is characterized in that：The face of cylinder of the p-m rotor is anchored in the cylinder that magnetically soft alloy is made.
The rotor is prior in addition to the quality due to cylinder increases and forms inertia damping to the Instantaneous Speed Fluctuations of rotor
It is that, according to Lenz's law, the cylinder is both made up of magnetically soft alloy, its satisfactory electrical conductivity can be to the transient speed ripple of p-m rotor
Movable property gives birth to electromagnetic damping, thus weakens vibration noise caused by speed ripple；Its good magnetic conductivity makes its position for occupying allow work
Make the low loss of magnetic flux to pass through, thus be maintained the efficiency of motor, without increasing electromagnetic material cost.
One of further design of above-mentioned technical proposal is：The magnetically soft alloy is electrical pure iron.Electrical pure iron has excellent
Elegant magnetic conductivity and the performance for being easy to machine cut or pressure processing, its moderate electrical conductivity are producing enough electromagnetic dampings
On the basis of, rotor circuit power factor can be improved and larger induction torque is produced, improve startability.
The two of the further design of above-mentioned technical proposal are：The magnetically soft alloy is ferritic stainless steel.Its electromagnetic performance
Less than electrical pure iron, but without anticorrosion.
Technical scheme and effect will be further described with reference to accompanying drawing in a specific embodiment.
Brief description of the drawings
Fig. 1 is the main Visual schematic diagrames of the basic mechanical structure of various embodiments of the present invention ventilation fan.
Fig. 2 is embodiment of the present invention ventilation fan motor electromagnetism basic structure schematic diagram.
Specific embodiment
The embodiment of the present invention be on the basis of embodiment ventilation fan described in CN201510650460.3 specifications improve and
Into its machinery, electromagnetic structure substantially as depicted in figs. 1 and 2, is inherited centrifugal pump described in CN201510650460.3 specifications and implemented
The structure design of example (can accordingly compare the Figure of description 1,6 of CN201510650460.3) includes：
--- the aial flow impeller 1 for rotating counterclockwise；
--- it is fixed on the motor 2 of casing；
--- impeller 1 is connected to the output shaft of motor 2, and it has 4 blades；By performance requirement, the number of blade can also
It is 3,5 or 6, but 8 had better not be more than.Impeller is injection moulding, diameter 120mm.Impeller should not be bigger, and rotary inertia is preferably most
Amount is small, with the starting torque for coordinating motor 2 still less big；
--- motor 2 is inner rotor motor, including stator 100 and p-m rotor 200.
The motor electromagnetism basic structure of 1st embodiment ventilation fan of the invention as shown in Fig. 2 including：
--- rotor 200, is that its section is divided into 4 sectors of symmetrical 90 ° with two orthogonal symmetry axis 400
And each radial magnetizing is the 4 pole p-m rotors of N, S, N, S；
--- stator 100 is constituted by with 4 circular iron cores of salient pole 101 and winding 102；Winding 102 is in 4 salient poles
Each coil part around with Insulating frame, then by around being 4 poles to being connected in series, and thus produce 4 poles when being powered
Pass through the main flux of air gap between rotor；
--- gradual change is narrowed the width of air gap in the counterclockwise direction between each salient pole of stator core 101 and rotor 200；Therefore exist
Free state be no power and without external fluid and rotational structure it is good in the case of, rotor 200 is attracted by stator core, respectively
The geometrical axis of pole is the permanent magnet flux axis 700,800 for passing through air gap between rotor respectively with the geometry of adjacent stators salient pole
Axis is that to pass through the main flux axis 500,600 of air gap between rotor be reference, one is deflected in the counterclockwise direction less sharp
Angle Ω.The present embodiment designs the mechanical angle for 5 ° (10 ° of electrical angle).Change the ratio that the angle can be narrowed with gradual change, and shadow
Dynamic torque of sounding and efficiency.The design can avoid rotor in a free state from staying in its axis being overlapped with the axis of stator salient poles
And starting torque is zero so-called " dead point " position when making energization, the reluctance torque for being formed also helps turning in preventing from operating
Son does not produce torque and stalls when alternating current zero passage.But exactly the electromagnetic structure makes to produce reluctance torque during motor running
Vibration.
The embodiment of the present invention is mainly compared to the improvement of embodiment ventilation fan described in CN201510650460.3 specifications：
--- the cylinder 100 that electrical pure iron is made is increased, it is tightly placed in former p-m rotor external cylindrical surface, sees Fig. 1 and Fig. 2
(can respectively compare the Figure of description 1,6 of CN201510650460.3).
Due to less demanding and be reduces cost, electrical pure iron is from the trade mark DT3 in national standard.Use the electrician
Pure iron material is drawn into internal diameter and corresponds to the cylindrical shape of former p-m rotor external diameter, and takes axially long with former p-m rotor identical
Degree, then former p-m rotor is penetrated in cylinder, reaches fixation while to p-m rotor end and axle sleeve injection molding, or with
Tight fit tolerance is directly fastened.
The wall thickness of cylinder takes 0.15~0.8mm.Generally thicker, electromagnetic damping effect is better and startability is slightly worse, and right
The useful space is utilized and slightly reduced.Can suitably be adjusted according to experiment, resultant effect.
Because electrical pure iron gets rusty easily, it is necessary to take appropriate rust preventing by prior art depending on use condition, including
To the inside and outside face of cylinder plating of cylinder or compound fine copper or thin layer of pure aluminiurn.The thin layer is except can also strengthen electromagnetic damping effect in addition to antirust
Really.Wherein, it is higher based on induced-current frequency when starting to cylinder inner cylinder face plating or compound fine copper or thin layer of pure aluminiurn, have
Beneficial to taking into account startability and electromagnetic damping.
Certainly, can also be changed to use 400 series ferritic stainless steels.
The control circuit and method of the ventilation fan can still according to embodiment described in CN201510650460.3 specifications.Work as leaf
When wheel does not need directional-rotation, motor winding can also directly input AC power and work without electronic switching circuit.
Above-mentioned motor is 4 pole motors, or 2 pole motors, such as U-iron core single-phase permanent-magnet synchronous motor,
It can be seen that China Machine Press's version in 2009《Small-power permanent magnet motor principle, design and application》.Now impeller diameter needs control
Within 100mm.
Claims (2)
1. the small-sized ventilation fan that a kind of single-phase self-starting permanent magnet synchronous motor drives, including：
--- impeller；
--- the motor of the direct drive impeller, its stator winding is access to single phase poaer supply by regulation around to through control circuit,
The width of air gap is narrowed in each pole lower edge regulation direction of rotation between stator poles identical p-m rotor and stator, thus
Under free state, the axis of each pole of rotor, as reference, one is deflected along the direction of rotation with the axis of the pole of hithermost stator one
Sharp angle；
--- the number of poles of the stator is 2 poles, and impeller diameter is not more than 100mm；Or the number of poles of stator is 4 poles, impeller diameter
No more than 150mm；
It is characterized in that：The face of cylinder of the p-m rotor is anchored in the cylinder that magnetically soft alloy is made.
2. according to ventilation fan described in claim 1, it is characterised in that the magnetically soft alloy is electrical pure iron or ferrite stainless
Steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710136467.2A CN106899107A (en) | 2017-03-09 | 2017-03-09 | Small-sized ventilation fan driven by single-phase self-starting permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710136467.2A CN106899107A (en) | 2017-03-09 | 2017-03-09 | Small-sized ventilation fan driven by single-phase self-starting permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106899107A true CN106899107A (en) | 2017-06-27 |
Family
ID=59185185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710136467.2A Pending CN106899107A (en) | 2017-03-09 | 2017-03-09 | Small-sized ventilation fan driven by single-phase self-starting permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106899107A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165843A (en) * | 2017-07-10 | 2017-09-15 | 叶露微 | Low-power scavenger fan directly driven by permanent magnet synchronous motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201885A (en) * | 2015-10-07 | 2015-12-30 | 叶露微 | Ventilating fan directly driven by single-phase self-starting permanent-magnet synchronous motor |
| CN105490412A (en) * | 2014-08-06 | 2016-04-13 | 德昌电机(深圳)有限公司 | Motor rotor and brushless DC motor applying same |
| CN106230152A (en) * | 2016-09-26 | 2016-12-14 | 威灵（芜湖）电机制造有限公司 | Rotor core assembly, rotor and self-starting permanent magnet synchronous motor |
-
2017
- 2017-03-09 CN CN201710136467.2A patent/CN106899107A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490412A (en) * | 2014-08-06 | 2016-04-13 | 德昌电机(深圳)有限公司 | Motor rotor and brushless DC motor applying same |
| CN105201885A (en) * | 2015-10-07 | 2015-12-30 | 叶露微 | Ventilating fan directly driven by single-phase self-starting permanent-magnet synchronous motor |
| CN106230152A (en) * | 2016-09-26 | 2016-12-14 | 威灵（芜湖）电机制造有限公司 | Rotor core assembly, rotor and self-starting permanent magnet synchronous motor |
Non-Patent Citations (1)
| Title |
|---|
| 化学工业部人事教育司；化学工业部教育培训中心: "《化工检修钳工工艺学》", 31 January 1997, 化学工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165843A (en) * | 2017-07-10 | 2017-09-15 | 叶露微 | Low-power scavenger fan directly driven by permanent magnet synchronous motor |
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