CN201742279U - Outer rotor brushless direct current (DC) motor - Google Patents
Outer rotor brushless direct current (DC) motor Download PDFInfo
- Publication number
- CN201742279U CN201742279U CN2010200133477U CN201020013347U CN201742279U CN 201742279 U CN201742279 U CN 201742279U CN 2010200133477 U CN2010200133477 U CN 2010200133477U CN 201020013347 U CN201020013347 U CN 201020013347U CN 201742279 U CN201742279 U CN 201742279U
- Authority
- CN
- China
- Prior art keywords
- outer rotor
- motor
- disc type
- base
- stator
- Prior art date
- 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.)
- Expired - Fee Related
Links
Landscapes
- Brushless Motors (AREA)
Abstract
The utility model relates to an outer rotor brushless DC motor, which belongs to the field of motors. The utility model particularly relates to an outer rotor brushless DC motor for the air supply of an air conditioner below 2000W. The outer rotor brushless DC motor comprises a stator and a rotor, and is characterized in that a base (6) is arranged, the outer rotor (1) is pressed at the inner wall of a disc type cover casing (8) in an expanded way by an expanded pressing process, the outer rotor (1), the disc type cover casing (8) and a rotating shaft (9) form a whole, the base (6) is a hollow round platform with a bottom, the center of the base (6) is provided with a convex circular groove, a bearing (2) is installed at the upper end part of the stator (3), the outer rotor (1) is buckled outside the stator (3), the rotating shaft of the outer rotor (1) penetrates through a packaging PCB (5), an insulated protection pad (4) and a check ring (7) are fixed in the circular groove in the center of the base (6), the upper edge part of the disc type cover casing is in a disc shape, the outside of the middle part of the disc type cover casing is provided with radiating fins, and the annular periphery of the position of the bottom edge of the disc type cover casing is provided with fixing holes in an evenly distributed way. The utility model has the advantages of simple manufacturing process, high efficiency, large torque, easy heat radiation, convenient installation and use and the like.
Description
Technical field
The utility model relates to a kind of outer rotor brushless DC motor, belongs to machine field.Be specifically related to the following air-conditioning air-supply outer rotor brushless DC motor of 2000W.
Background technology
Drag the control field at the high-performance increment, modal motor application technology is exactly the DC servo motor that the band position feedback detects.Good and the constantly progressive control criterion of definition is the popular first cause of this class motor.Motor is auto reversive, only requires that a direct voltage produces a torque that drives load.Unfortunately, this motor technology is comparatively speaking in reliability (wearing and tearing of brush/commutator), and is all more poor on scattering properties (rotor winding) and the cost performance.
Another selection comprises brushless direct-current and permanent magnetic step motor.Although structurally be not quite similar, they have great similarity, and the two all has wound stator, and p-m rotor also all is the electric drive commutation.In the past, because the difficulty and the high performance position signalling detection technique of commutation, the motor application of this type was limited.Simultaneously, also be subjected to the high torque (HT) fluctuation, the puzzlement of high noisy and the resonance of middle low speed.However, his heat dispersion, reliability and cost performance all are better than DC servo motor.Still more, by the cancellation mechanical commutation device, electromagnetic interference problem can effectively be got rid of.Dc brushless motor is applied to built-in Hall element widely and locatees the three-phase of commutation position (star-like or triangle) structure.Three alternate per 120 degree electrical degrees commutate.If every torque waveform of going up mutually is the position ideal of sine wave and Hall element, torque ripple will only account for 14% of output torque.Yet in the actual conditions, Hall element relatively is difficult to cooperate ideally, has caused bigger torque ripple, has increased noise and has reduced efficiency of motor.So the motor of this type is limited at a high speed, the application of low performance is unless better location detecting technology and more complicated control algolithm appearance can be applied more widely.
More and more perfect along with algorithm and location detecting technology, dc brushless motor also will be more widely used.In existing dc motor technology, present mainstream applications remains the direct current inner rotor motor.The load of direct current inner rotor motor generally directly is assemblied on the motor shaft, drives the motor shaft rotation because the stator winding excitation drives p-m rotor again, thereby drags load running.Such application mode, assembly technology requirement to motor is very strict, and especially to the dynamic balancing of motor shaft, circular runout and flexural properties require comparatively strict, and the stress of load concentrates on the motor shaft, is that the motor installed of level is more unfavorable for mounting means.The tradition direct current machine is with two kinds of built-in driving and external drivings, and built-in driving is assemblied in motor internal with drive circuit board usually, and this moment, the heat dispersion of motor had very significant effects to the reliability of built-in circuit driving.
Summary of the invention
The technical problems to be solved in the utility model is, overcomes the deficiency that prior art exists, and a kind of outer rotor brushless DC motor is provided, and solved the temperature drift effects of direct current external rotor electric machine radiating treatment deficiency to drives.
The technical scheme that its technical problem that solves the utility model adopts is: this outer rotor brushless DC motor, comprise stator and rotor, it is characterized in that: base is set, external rotor is by the inwall of turgor pressure technology turgor pressure at the disc type case, with external rotor, disc type case and rotation axis form as a whole, base is the band hollow round table at the end, the center is provided with the circular recess of projection, Bearing Installation is in the stator upper end, external rotor is buckled in the stator outside, the rotation axis of external rotor passes the encapsulation pcb board, insulation protection pad and back-up ring are fixed in the base central circular groove, disc type case top portion is a plate-like, the middle part is outer to be provided with fin, and position, base ringed perimeter is evenly equipped with fixing hole.
External rotor is a permanent magnetic material.
Compared with prior art, the beneficial effect that outer rotor brushless DC motor of the present utility model had is: the material of whole disc type case adopts 1070 aluminium alloy once-casts to form, disc type case outer wall becomes fin shape after the moulding, can effectively externally conduct motor internal stator excitation comes out with the heat that axle drags the load generation, thereby reduce the loss of motor, reduce the heating of coil, to guarantee when designing, can to carry out the coil type selecting, reduced design cost according to different service conditions; Also reduce the heating of electronic devices and components simultaneously, guarantee the stability of internal drive circuits, prolonged the useful life of motor.Rotation axis is connected with stator by the indoor bearing of stator bearing, guarantees the balance of whole motor.
Description of drawings
Fig. 1 is that the utility model outer rotor brushless DC motor master looks cross-sectional schematic.It is most preferred embodiment of the present utility model.
Wherein: 1 external rotor, 2 bearings, 3 stators, 4 insulation protection pads, 5 encapsulation pcb boards, 6 bases, 7 back-up rings, 8 disc type cases, 9 rotation axiss.
Embodiment
With reference to Fig. 1
This outer rotor brushless DC motor is made up of external rotor 1, bearing 2, stator 3, insulation protection pad 4, encapsulation pcb board 5, base 6, back-up ring 7, disc type case 8 and rotation axis 9.External rotor 1 is by the inwall of turgor pressure technology turgor pressure at disc type case 8, form external rotor 1, disc type case 8 and rotation axis 9 as a whole, base 6 is the band hollow round table at the end, the center is provided with the circular recess and the fixing hole of projection, bearing 2 is installed in stator 3 upper ends, external rotor 1 is buckled in stator 3 outsides for the cap shape, and the rotation axis of external rotor 1 passes encapsulation pcb board 5, insulation protection pad 4 and back-up ring 7 and is fixed in the base 6 central circular grooves.Disc type case 8 top portions are plate-like, and fin is set outside the middle part, and position, base ringed perimeter is evenly equipped with fixing hole.External rotor 1 is made for permanent magnetic material.
During installation, earlier bearing 2 is fixed on the stator 3, and makes it fastening, be fixed on together on the external rotor 1 then, do whole balance test and calibration, make balance correction meet specification requirement.To insulate protection pad 4, the encapsulation pcb board 5 be fixed on together on the base 6, be installed in together again on the rotation axis 9 of external rotor 1, then with back-up ring 7 fix in position.Carry out final assembly at last, wind wheel is fastened on external rotor 1 outer by screw, and electric machine support is fastened on the base 6 by screw.
The course of work is as follows:
Behind the outside feeding 220V single phase alternating current power supply, the encapsulation pcb board 5 of electric machine built-in powers on, circuit obtains the 310V direct current after with 220V single-phase alternating current rectifying and wave-filtering on the encapsulation pcb board 5, the 310V direct current obtains simulating the three-phase square wave electric current by the switch of 6 road IGBT pipes, electric current makes stator excitation produce rotating magnetic field by the coil windings of stator 3, external rotor 1 is a permanent magnet material, after being subjected to the magnetic field force of stator 3 generations, drive disc type case 8 and rotation axis 9 rotations with external rotor 1 one, thereby drive the wind wheel rotation and offer the needed air quantity of air-conditioning, in rotation process, link to each other with the winding of stator 3 by the current sense resistor that is embedded in stator 3 inside, detected voltage signal is offered main control chip on the pcb board 5, main control chip is judged rotating speed of motor according to the voltage signal of receiving, adjust the PWM ripple of chip internal and export the rotating speed that changes load, make load reach the rotating speed of target that the user wishes.After cutting off the electricity supply, the stator winding power down makes stator 3 losss of excitation, and external rotor 1 loses moment, thereby stops operating, and motor stops.
The above, it only is preferred embodiment of the present utility model, be not to be the restriction of the utility model being made other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection range of technical solutions of the utility model according to technical spirit of the present utility model.
Claims (2)
1. outer rotor brushless DC motor, comprise stator and rotor, it is characterized in that: base (6) is set, external rotor (1) is by the inwall of turgor pressure technology turgor pressure in disc type case (8), with external rotor (1), disc type case (8) and rotation axis (9) form as a whole, base (6) is the band hollow round table at the end, the center is provided with the circular recess of projection, bearing (2) is installed in stator (3) upper end, external rotor (1) is buckled in stator (3) outside, the rotation axis of external rotor (1) passes encapsulation pcb board (5), insulation protection pad (4) and back-up ring (7) are fixed in base (6) the central circular groove, disc type case (8) top portion is a plate-like, the middle part is outer to be provided with fin, and position, base ringed perimeter is evenly equipped with fixing hole.
2. outer rotor brushless DC motor according to claim 1 is characterized in that: external rotor (1) is a permanent magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200133477U CN201742279U (en) | 2010-01-05 | 2010-01-05 | Outer rotor brushless direct current (DC) motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200133477U CN201742279U (en) | 2010-01-05 | 2010-01-05 | Outer rotor brushless direct current (DC) motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201742279U true CN201742279U (en) | 2011-02-09 |
Family
ID=43557557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200133477U Expired - Fee Related CN201742279U (en) | 2010-01-05 | 2010-01-05 | Outer rotor brushless direct current (DC) motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201742279U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997351A (en) * | 2011-09-19 | 2013-03-27 | 柯东林 | Bladeless ice-filling cold air fan with stator capable of rotating to produce wind |
| CN108711991A (en) * | 2018-05-31 | 2018-10-26 | 广东威灵电机制造有限公司 | Mounting disc, fan assembly and washing-drying integral machine for installing motor |
-
2010
- 2010-01-05 CN CN2010200133477U patent/CN201742279U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997351A (en) * | 2011-09-19 | 2013-03-27 | 柯东林 | Bladeless ice-filling cold air fan with stator capable of rotating to produce wind |
| CN108711991A (en) * | 2018-05-31 | 2018-10-26 | 广东威灵电机制造有限公司 | Mounting disc, fan assembly and washing-drying integral machine for installing motor |
| CN108711991B (en) * | 2018-05-31 | 2020-09-22 | 广东威灵电机制造有限公司 | A mounting disc, fan subassembly and washing and drying all-in-one for installing motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201107842Y (en) | Disc type switch reluctance motor | |
| CN104124849B (en) | Draining pump brushless motor and draining pump | |
| CN107346923B (en) | Roller motor and application method thereof | |
| US9618003B2 (en) | High efficiency transverse flux motor fan | |
| CN201904710U (en) | Brushless permanent magnet DC motor with HS | |
| CN104967253A (en) | High-speed Hall-free three-phase vacuum cleaner motor | |
| CN205377620U (en) | Refrigerator is with brushless fan motor of six groove three -phase external rotors | |
| CN201742279U (en) | Outer rotor brushless direct current (DC) motor | |
| CN103516093B (en) | Brushless motor | |
| CN102979748B (en) | Electronic control type fan of outer rotor and speed regulating method | |
| CN201054537Y (en) | AC power supply brushless DC suspending fan electromotor | |
| CN204886623U (en) | External rotor brushless DC motor | |
| KR20180046360A (en) | three-phase brushless DC motor for a household fan | |
| CN105099117A (en) | Micro brushless direct-current motor with built-in controller | |
| CN204992936U (en) | There is not hall three -phase dust catcher motor at a high speed | |
| CN202949342U (en) | Outer rotor type brushless direct current motor | |
| CN200987085Y (en) | High speed permanent-magnetic motor generator | |
| CN105471215B (en) | Six groove three-phase external rotor brush-less fan motors of refrigerator | |
| WO2022222826A1 (en) | Electric motor and food processor | |
| CN108512319A (en) | A kind of switched reluctance machines | |
| CN102969862A (en) | Outer rotor type brushless direct current motor | |
| CN204391947U (en) | A kind of treadmill outer rotor brushless motor | |
| CN207782509U (en) | motor and compressor | |
| CN106385126A (en) | Low-frequency, mute and efficient direct current machine external winding structure | |
| CN201994802U (en) | Multiphase outer rotor type variable-frequency induction motor for fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BOSCH THERMOTECHNOLOGY (SHANDONG) CO., LTD. Free format text: FORMER OWNER: SHANDONG OAK AIR-CONDITIONING TECHNOLOGY CO., LTD. Effective date: 20120824 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120824 Address after: 256404, Dongfeng Road 77, Chen Zhuang Town, Huantai County, Zibo, Shandong Patentee after: BOSCH thermal technology (Shandong) Co., Ltd. Address before: 256404, No. 77 Zhang Tian Road, Chen Zhen, Huantai County, Zibo, Shandong Patentee before: Shandong OAK Central Air Conditioning Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20170105 |