CN206559151U - A kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure - Google Patents
A kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure Download PDFInfo
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- CN206559151U CN206559151U CN201720135096.1U CN201720135096U CN206559151U CN 206559151 U CN206559151 U CN 206559151U CN 201720135096 U CN201720135096 U CN 201720135096U CN 206559151 U CN206559151 U CN 206559151U
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Abstract
The utility model discloses a kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure, include DC brushless motor and controller, controller includes MCU chip and 3 pairs of inverse switch tube modules, MCU chip is responsible for the control process of analog- and digital- amount, and inverse switch tube module is responsible for the break-make switching of electric current in three-phase windings；Motor uses three-phase fractional-slot concentratred winding, and three-phase windings Y-connection 3 is to full-bridge type drive circuit；Motor, which includes to be provided with rotor, stator, rotor on rotor core, stator, is provided with stator core, and rotor core left and right corresponding with stator core is alignd, and magnetic shoe is additionally provided with rotor, and the unilateral length of magnetic shoe is more than rotor core.The utility model is substituted after induction machine with DC brushless motor：Lampblack absorber impacts small when starting, without obvious cranking noise.Maximum static pressure can improve 15 25%.The complete machine efficiency of lampblack absorber can lift 10 15%.DC brushless motor easily realizes stepless speed regulation, is adapted to the intelligent control on lampblack absorber.
Description
Technical field
The utility model belongs to lampblack absorber field, more specifically to a kind of brush DC of application novel magnetic tile structure
The lampblack absorber of motor.
Background technology
With the development of permanent magnetism new material, microelectric technique, automatic control technology and Power Electronic Technique, brush DC
Motor is widely used as new, the efficient motor of one kind.Traditional lampblack absorber uses capacitor operating with motor
Load motor, has that starting abnormal sound is big, overall efficiency is relatively low, static pressure suction is small and the speed regulation defect such as difficulty.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of DC brushless motor of application novel magnetic tile structure
Lampblack absorber, because the motor is using three sections of soft start patterns, therefore impacts small, without obvious cranking noise during lampblack absorber starting；
Maximum static pressure can improve 15-25%；The complete machine efficiency of lampblack absorber can lift 10-15%；DC brushless motor is easily realized stepless
Speed governing, is adapted to the intelligent control on lampblack absorber.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：A kind of application novel magnetic tile structure it is straight
The lampblack absorber of brushless electric machine is flowed, includes motor and controller, the motor is DC brushless motor, and the controller includes
MCU chips and 3 pairs of inverse switch tube modules, the MCU chip are responsible for the control process of analog- and digital- amount, and the inversion is opened
Close the break-make switching that tube module is responsible for electric current in three-phase windings；The motor uses three-phase fractional-slot concentratred winding, and described three
Phase winding Y-connection 3 is to full-bridge type drive circuit；The motor includes is provided with rotor on rotor, stator, the rotor
Stator core is provided with iron core, the stator, rotor core left and right corresponding with stator core is alignd, on the rotor
Magnetic shoe is additionally provided with, the unilateral length of the magnetic shoe is more than rotor core.
Further, the motor also includes rolling bearing and for the Corrugation pad for the cumulative dimensional tolerance for adjusting its axial direction
Circle.
Further, stator punching is provided with the stator, the stator punching is provided with 12 notches, the stator punching
Rectangle auxiliary flute, and width of the width equal to stator punching notch of the auxiliary flute are offered at the crown of piece；It is described
Rotor punching is provided with rotor, the rotor punching hollows out setting.
Further, 10 magnetic shoes are evenly distributed with the rotor core, the magnetic shoe is ferrite sintered body material, described
The external diameter of magnetic shoe and internal diameter decentraction are set.
Further, the magnetic shoe uses surface-mount type structure in the rotor, and the stator also includes terminal plate, the wiring
Plate is constituted by covering copper epoxy plate.
Using above-mentioned technical proposal, because lampblack absorber belongs to the load of fan class, starting torque requires smaller, can use nothing
Hall sensor mode is controlled.MCU chip calculates the specific position of rotor according to three phase back-emf situations of Real-time Feedback
Put, switch sense of current in three-phase stator winding in good time, to reach the purpose of electronic commutation.The family expenses such as lampblack absorber, air-conditioning
Electrical equipment consumer product is high to index requests such as vibration, noises, therefore driver must be sine wave vector control.Make in motor
Counter electromotive force and input current phase are consistent, and to ensure that output torque is maximum, make the efficiency of product high.
Brief description of the drawings
Fig. 1 is three-phase windings star in a kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure of the utility model
Shape connects the electrical block diagram of 3 pairs of full-bridge type drive circuits；
Fig. 2 is the solid of motor in a kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure of the utility model
Structure explosion diagram；
Fig. 3 is the longitudinal direction of motor in a kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure of the utility model
Cross section view
Fig. 4 is stator punching in a kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure of the utility model
Front view；
Fig. 5 is rotor punching in a kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure of the utility model
Front view；
Fig. 6 is the vertical view of stator in a kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure of the utility model
Figure
Fig. 7 is the longitudinal direction of stator in a kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure of the utility model
Cross section view
Fig. 8 is that stator is looked up in a kind of the utility model lampblack absorber of the DC brushless motor of application novel magnetic tile structure
Figure
Fig. 9 is the transverse direction of rotor in a kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure of the utility model
Cross section view
Figure 10 is the vertical of rotor in a kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure of the utility model
To cross section view
In figure, 2- rotors, 3- stators, 4- rear end caps, 7- rolling bearings, 8- protective rings, 11- wave washers, 32- wiring
Plate, 211- rotor cores, 311- stator cores, 212- magnetic shoes, 2111- rotor punchings, 3111- stator punchings.
Embodiment
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings.Herein it should be noted that
Explanation for these embodiments is used to help understand the utility model, but does not constitute to restriction of the present utility model.This
Outside, as long as technical characteristic involved in each embodiment of the utility model disclosed below does not constitute conflict each other
It can just be mutually combined.
A kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure as depicted, it is characterized in that：Include
Motor and controller, the motor are DC brushless motor, and the controller includes MCU chip and 3 pairs of inverse switch pipe dies
Block, the MCU chip is responsible for the control process of analog- and digital- amount, and the inverse switch tube module is responsible for electric current in three-phase windings
Break-make switching；The motor uses three-phase fractional-slot concentratred winding, and the three-phase windings Y-connection 3 drives to full-bridge type
Circuit；The motor, which includes to be provided with rotor 2, stator 3, the rotor 2 on rotor core 211, the stator 3, to be provided with
Stator core 311, the left and right corresponding with stator core 311 of rotor core 211 is alignd, and magnetic is additionally provided with the rotor 2
Watts 212, the unilateral length of the magnetic shoe 212 is more than rotor core 211.
Further, the motor also includes rolling bearing 7 and for the waveform for the cumulative dimensional tolerance for adjusting its axial direction
Packing ring 11.
Further, stator punching 3111 is provided with the stator 3, the stator punching 3111 is provided with 12 notches,
Rectangle auxiliary flute is offered at the crown of the stator punching 3111, and the width of the auxiliary flute is equal to stator punching
The width of 3111 notches；Rotor punching 2111 is provided with the rotor 2, the rotor punching 2111 hollows out setting.
Further, 10 magnetic shoes 212 are evenly distributed with the rotor core 211, the magnetic shoe 212 is ferrite sintered body
Material, the external diameter of the magnetic shoe 212 and internal diameter decentraction are set.
Further, the magnetic shoe 212 uses surface-mount type structure in rotor 2, and the stator 3 also includes terminal plate 32,
The terminal plate 32 is constituted by covering copper epoxy plate.
The DC brushless motor uses three-phase fractional-slot concentratred winding, and three-phase windings Y-connection three is to MOSFET full-bridges
Formula drive circuit, its principle are as shown in Fig. 2 A, B, C three-phase windings are simultaneously by sine wave continuous current (180 ° of conductings), and respectively
120 ° of phase angles are differed between phase, the square wave drive pattern of interrupted current is flowed through compared to rising and there are the advantages such as lower vibration noise
Rotor 2 is fitted into the endoporus of stator 3, between the two the unilateral inter-air space for leaving 0.4-0.5mm, stator core 311 with
Rotor core 211 needs left and right alignment, the long 3.5-4mm more unilateral than rotor core 211 of magnetic shoe 212.In order to extend the use longevity of motor
Life, uses the trade mark for NSK rolling bearing 7, as illustrated, the cumulative dimensional tolerance of motor body structure axial direction leans on wave washer
11 adjust, and control height (former freely a height of 4mm) between 1.5-2.0mm after its compression, and motor gets into smooth bearing sound
Just can be harmonious uniform.
The concentratred winding of stator 3 is that winding overhang is short relative to the advantage of Distributed Winding, and cogging torque and torque pulsation are low.Such as
Shown in figure, stator punching 3111 selects 12 grooves, then MgO-ZrO_2 brick q=z/2mp=2/5, and the winding of stator 3 uses fractional-slot
(2/5) concentratred winding, and for Double Layer Winding, such back emf waveform is closer to sine wave.In order to further reduce teeth groove
Torque, has opened the wide rectangle auxiliary flutes of 1.9mm at the crown of stator punching 3111, and auxiliary flute is wide to be equal to stator punching
3111 width of rebate.The boss ratio of stator 3 is referred to as stator 3 and splits ratio, is one important design parameter of motor, because it
There is significant impact to motor torque density and efficiency.Stator 3 is split than Ksp=Di/D0=59/94=0.63 herein, relative to take
Higher value.Because taking higher value using the need of ferrite permanent-magnet materials, because lampblack absorber motor belongs to slow-speed of revolution high-torque spy
Property is also needed to take higher value, due also to Ksp is designed to higher value, armature-reaction demagnetizing effect is reduced by.
The large area of rotor punching 2111 has been hollowed out everywhere, is in order to reduce the unitary rotation inertia of rotor 2, necessarily to motor
Starting and response speed it is beneficial.
As illustrated, uniform 10 magnetic shoes 212 on injection rotor core 211, magnetic shoe 212 is ferrite sintered body material,
Better than injection and bonded ferrite magnetic property, ferrite lattice relative price is cheap, also has its temperature in use scope wide, low
Just demagnetized in -40 DEG C and more than 200 DEG C, it also resistivity it is high, it is meant that ferrite is not present any due to vortex in itself
Caused by problem, and its corrosion-free problem is lost, without being surface-treated.The z/2p combinations of product are from 12/10
Slot number number coordinates, and the Double Layer Winding winding coefficient value of three-phase fractional-slot concentratred winding z/p=12/5 combinations is 0.933, LCM values
For 60, two values represent that such a combination has higher winding coefficient and relatively low cogging torque.
The external diameter and internal diameter of ferrite magnetic shoe 212 are designed to decentraction (centre-to-centre spacing differs 18mm), and section is in bread-like, is made
Permanent magnetism body thickness, central thick is a little, and both sides are thinner, and such air gap is also changed into not waiting air gap, makes the air gap flux density of motor
Distribution is also sine wave close to sine wave, then back emf waveform, advantageously reduces oil smoke brushless DC motor
Torque ripple when cogging torque and load, makes lampblack absorber be operated steadily in whole rotary speed area, without the production of obvious abnormal sound
It is raw.
Magnetic shoe 212 uses surface-mount type structure in rotor 2, and the major advantage of surface-mount type is simple in construction, so as to reduce system
Cause this.In order to prevent permanent magnet from flying ease in operation or loosen, magnetic shoe 212 is fixed using injection outside rotor core 211
Technique, injected plastics material selects PBT+20% glass.Semi-finished product injection rotor core 211 can pass through following verification experimental verification：A, resistance
Grade is fired up to V0 grades.It is indeformable after 48 hours when b, 150 DEG C of heatproof.(3600r/min) 48 hours under c, two times of rated speeds
Magnet does not loosen after overspeed test.As illustrated, injection moulded stator iron core 311 by stator core 311 in particular manufacturing craft, with same
Plastic material (PBT+20% glasses) is molded.The structure of injection moulded stator iron core 311 is highly stable, coiling three-phase during batch production
Winding facilitates rapid, and the anti-flammability of injection moulded stator iron core 311 reaches V0 grades, and heatproof will not become after 150 DEG C/48 hours
Shape, comprehensive insulation electrical intensity is high (3000V/1S will not puncture).
Terminal plate 32 in stator 3 is constituted by covering copper epoxy plate, is had on plate and is covered copper everywhere, wherein three-phase windings at one
Tail a, b, c connect together, be connected respectively with head A, B, C of three-phase windings by yellow, red, blue lead-out wire at three in addition, three
Lead-out wire is drawn out to outside back end cover for motor 4 again through the elongated slot on plate and protective ring 8.By terminal plate 32 realize three around
Group connection be star (Y), so handle make three of three-phase windings between, three will not intersect between common point, it is to avoid
The generation of the hidden trouble such as phase fault or high-voltage breakdown.It is noted that the quality assurance of 9 solder joints during production, while will after welding
Them are closed with high temperature resistant ebonite (Kraft spy K-1668 yellow glues), in case they are aoxidized with air contact.Length on plate
It is also full with above yellow glue envelope in groove, make three lead-out wires fixed in groove, so the stress on the lead-out wire of outside would not be straight
Connect and be applied at three solder joints.Outside motor between protective ring 8 and rear end cap 4, it is soft with heatproof between the endoporus of protective ring 8 and lead-out wire
Glue (Kraft spy K-5939B black glues) is sealed, and prevents the debris such as oil smoke and water from entering motor internal, so as to destroy internal firm exhausted
Edge system.
Substituted with DC brushless motor after induction machine：1st, because the motor is using three sections of soft start patterns, therefore lampblack absorber
Impact small during starting, without obvious cranking noise.2nd, maximum static pressure can improve 15-25%.3rd, the complete machine efficiency of lampblack absorber can
Lift 10-15%.4th, DC brushless motor easily realizes stepless speed regulation, is adapted to the intelligent control on lampblack absorber.
Embodiment of the present utility model is explained in detail above in association with accompanying drawing, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, it is right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall within protection domain of the present utility model.
Claims (2)
1. a kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure, it is characterized in that：Include motor and controller,
The motor is DC brushless motor, and the controller includes MCU chip and 3 pairs of inverse switch tube modules, the MCU chip
It is responsible for the control process of analog- and digital- amount, the inverse switch tube module is responsible for the break-make switching of electric current in three-phase windings；Institute
Motor is stated using three-phase fractional-slot concentratred winding, and the three-phase windings Y-connection 3 is to full-bridge type drive circuit；The motor
Include to be provided with rotor, stator, the rotor on rotor core, the stator and be provided with stator core, the rotor iron
Core left and right corresponding with stator core is alignd, and magnetic shoe is additionally provided with the rotor, and the unilateral length of the magnetic shoe is more than rotor
Iron core；10 magnetic shoes are evenly distributed with the rotor core, the magnetic shoe is ferrite sintered body material, the external diameter of the magnetic shoe
Set with internal diameter decentraction.
2. a kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure according to claim 1, it is characterized in that：
The motor also includes rolling bearing and for the wave washer for the cumulative dimensional tolerance for adjusting its axial direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720135096.1U CN206559151U (en) | 2017-02-15 | 2017-02-15 | A kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure |
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| CN201720135096.1U CN206559151U (en) | 2017-02-15 | 2017-02-15 | A kind of lampblack absorber of the DC brushless motor of application novel magnetic tile structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105819A (en) * | 2017-11-03 | 2018-06-01 | 合肥凯邦电机有限公司 | Control device and method for smoke exhaust ventilator |
-
2017
- 2017-02-15 CN CN201720135096.1U patent/CN206559151U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105819A (en) * | 2017-11-03 | 2018-06-01 | 合肥凯邦电机有限公司 | Control device and method for smoke exhaust ventilator |
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