CN105024491A - Integrated motor with impeller - Google Patents
Integrated motor with impeller Download PDFInfo
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- CN105024491A CN105024491A CN201510515036.8A CN201510515036A CN105024491A CN 105024491 A CN105024491 A CN 105024491A CN 201510515036 A CN201510515036 A CN 201510515036A CN 105024491 A CN105024491 A CN 105024491A
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Abstract
The invention is applicable to the field of motors, and discloses an integrated motor with an impeller. The integrated motor comprises a motor body and an impeller assembly installed at one end of the motor body, and is characterized in that the motor body comprises an installation bracket, a stator assembly installed on the installation bracket, a rotating shaft installed in the installation bracket in a penetrating mode and a rotor installed on the rotating shaft, the impeller assembly comprises an impeller installed at one end of the rotating shaft and a fan cover covered outside the impeller and the motor body, the installation bracket is connected with the fan cover in a fastening mode, and a plurality of ventilation channels communicated between the impeller and the stator assembly are formed between the installation bracket and the inner side wall of the fan cover. According to the integrated motor with the impeller provided by the invention, the stator assembly is directly installed in the fan cover of the impeller assembly through the installation bracket, the structure is simple and compact, the size is small, the number of components is small, the installation is convenient; and cooling and heat dissipation are carried out on the stator assembly by using strong air flow generated in operation of the impeller, thereby effectively improving a heat dissipation effect of the integrated motor.
Description
Technical field
The invention belongs to machine field, particularly relate to the integrated motor with impeller.
Background technology
The existing integrated motor with impeller, in order to meet high-revolving requirement, its structure generally all designs to obtain more complicated, and like this, the existing integrated motor with impeller is all existed mostly, and volume is large, parts are many, material usage is large, install inconvenient defect; And the existing radiating effect with the integrated motor of impeller is poor, has had a strong impact on the useful life of product.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provide the integrated motor with impeller, its
For achieving the above object, the technical solution used in the present invention is: the integrated motor with impeller, comprise motor body and the impeller assembly being installed on described motor body one end, described motor body comprises mounting bracket, be installed on the stator module on described mounting bracket, wear the rotating shaft be installed in described mounting bracket and the rotor be installed in described rotating shaft, described impeller assembly comprises the impeller being installed on described rotating shaft one end and the fan housing covered at outside described impeller and described motor body, described mounting bracket is fastenedly connected described fan housing, and be formed with several between the madial wall of described mounting bracket and described fan housing and be communicated in air duct between described impeller and described stator module.
Preferably, described mounting bracket comprises the rack body with hollow endoporus and several are connected to connection support body between described rack body and described fan housing, connects support body and all enclose formation described air duct with the madial wall of described fan housing, described rack body described in arbitrary neighborhood two.
Preferably, described connection support body comprises along the axial limiting portion of axis between described stator module and described impeller assembly of described fan housing and the radial limiting section of radial direction between described stator module and described housing interior side-wall along described fan housing, and described axial component is provided with and extends towards described stator module the axial limiting portion supporting location for described stator module.
Preferably, each described axial limiting portion is respectively and extends towards described stator module the positioning boss be convexly equipped on each described axial component.
Preferably, described stator module is fastenedly connected described mounting bracket by securing member, described stator module runs through and is provided with several wear connection the first connecting hole for securing member, described positioning boss is provided with several wear connection the second connecting hole for described securing member.
Preferably, what each described axial part was divided is arranged with the wind-guiding groove being communicated in and being adjacent described in two between air duct on the end face of described impeller.
Preferably, described impeller assembly also comprises along the stator be axially located between described impeller and described mounting bracket of described fan housing.
Preferably, described stator and described mounting bracket split manufacture shaping, and described stator is fastening is installed on described mounting bracket; Or, described stator and described mounting bracket one-body molded.
Preferably, the above-mentioned integrated motor with impeller also comprises the control assembly arranged near described stator module, and described control assembly comprises the circuit board that is connected with described stator module and to be installed on described circuit board and the electric capacity that extends back to described stator module of external part.
Preferably, described stator module comprises stator core and stator winding, described stator core comprises stator yoke and several are located at stator tooth in described stator yoke, and described stator winding is set around the periphery of described stator yoke, and described stator winding and each described air duct are oppositely arranged.
The integrated motor with impeller provided by the invention, by mounting bracket, stator module is directly installed in the fan housing of impeller assembly, eliminate the setting of motor case and electric motor end cap, thus the mounting structure effectively simplified between impeller assembly and motor body, and make the structure comparison of integrated motor compact, and then reduce the volume of integrated motor, decrease material usage and the number of components of integrated motor, make the assembling of integrated motor more convenient.Simultaneously, it is communicated in air duct between impeller and stator module by being formed with several between mounting bracket and the madial wall of fan housing, the air-flow that produces during impeller operation can be made negotiable between air duct, stator module can directly be cooled by air blast, reduce the temperature rise of stator module, improve the radiating effect of integrated motor, be finally beneficial to the useful life extending integrated motor, improve the combination property of the integrated motor with impeller dramatically.
Accompanying drawing explanation
Fig. 1 is the entirety assembling schematic diagram with the integrated motor of impeller that the embodiment of the present invention provides;
Fig. 2 is the decomposing schematic representation with the integrated motor of impeller that the embodiment of the present invention provides;
Fig. 3 is the schematic diagram that fan housing is opened by the integrated motor with impeller that the embodiment of the present invention provides;
Fig. 4 is the assembling schematic diagram of the mounting bracket that provides of the embodiment of the present invention and fan housing;
Fig. 5 is the assembling schematic diagram of mounting bracket, stator core and the fan housing that the embodiment of the present invention provides;
Fig. 6 is the decomposing schematic representation of mounting bracket, stator core and the fan housing that the embodiment of the present invention provides;
Fig. 7 is the backsight structural representation of the mounting bracket that the embodiment of the present invention provides;
Fig. 8 is the forward sight structural representation of the mounting bracket that the embodiment of the present invention provides;
Fig. 9 is the structural representation that stator winding that the embodiment of the present invention provides is set around on stator core.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
It should be noted that, when element is called as on " being fixed on " or " being arranged at " another element, it can directly on another element or may there is centering elements simultaneously.When an element is known as " connection " another element, it can be directly connect another element or may there is centering elements simultaneously.
Also it should be noted that, the orientation term such as left and right, upper and lower, the top in following examples, end, is only relative concept or be reference with the normal operating condition of product each other, and should not be regarded as have restrictive.
As shown in Fig. 1 ~ 9, the integrated motor of what the embodiment of the present invention provided have impeller, comprise motor body 1 and the impeller assembly 2 being installed on motor body 1 one end, motor body 1 comprises mounting bracket 11, be installed on the stator module 12 on mounting bracket 11, wear the rotating shaft 13 of the center axial position being installed on mounting bracket 11 and to be installed in rotating shaft 13 and the rotor 14 be positioned at inside stator module 12, impeller assembly 2 comprises the impeller 21 being installed on rotating shaft 13 one end and the fan housing 22 covered at outside impeller 21 and motor body 1, the center axial position of fan housing 22 runs through and is provided with ventilation hole 221, mounting bracket 11 is every to be located between impeller 21 and stator module 12 and to be fastenedly connected the madial wall of fan housing 22, and be formed with several between the madial wall of mounting bracket 11 and fan housing 22 and be communicated in air duct 101 between impeller 21 and stator module 12.The end away from stator module 12 of rotating shaft 13 is satisfied with by impeller 21 adapter sleeve, and can rotate with the rotation of rotating shaft 13, thus can play the effect producing air blast.The setting of fan housing 22, be mainly used in protection impeller 21 and motor body 1, and when impeller 21 rotates, fan housing 22 does not rotate.The integrated motor of what the embodiment of the present invention provided have impeller, by mounting bracket 11, stator module 12 is directly installed in the fan housing 22 of impeller assembly 2, eliminate the setting of motor case and electric motor end cap, thus the mounting structure effectively simplified between impeller assembly 2 and motor body 1, and make the structure comparison of integrated motor compact, and then reduce the volume of integrated motor, decrease material usage and the number of components of integrated motor, make the assembling of integrated motor more convenient.Simultaneously, it is communicated in air duct 101 between impeller 21 and stator module 12 by being formed with several between mounting bracket 11 and the madial wall of fan housing 22, the air-flow produced when impeller 21 can be made to operate is negotiable between air duct 101, stator module 12 can directly be cooled by air blast, reduce the temperature rise of stator module 12, improve the radiating effect of integrated motor, finally be beneficial to the useful life extending integrated motor, improve the combination property of the integrated motor with impeller 21 dramatically.
Particularly, mounting bracket 11 is installed in fan housing 22 by tight fit mounting means (interference fit) is fastening; Or mounting bracket 11 is also installed in fan housing 22 by compound mode that matched in clearance is bonding with glue is fastening; Or mounting bracket 11 is also installed in fan housing 22 by compound mode that interference fit is bonding with glue is fastening, and these three kinds of modes all can realize the installation of mounting bracket 11 in fan housing 22 and fix.
Preferably, in the lump with reference to shown in Fig. 1 ~ 3, impeller assembly 2 also comprises along the stator 23 be axially located between impeller 21 and mounting bracket 11 of fan housing 22, and stator 23 is connected with mounting bracket 11.When rotating shaft 13 is rotated, stator 23 does not rotate.The setting of stator 23, is mainly used in correcting the gas flow circulated between impeller 21 and air duct 101, to reduce the pressure loss in gas flow.
Preferably, stator 23 and mounting bracket 11 split manufacture molding mode, and stator 23 is installed on mounting bracket 11 by the securing member such as screw or rivet is fastening.Stator 23 and mounting bracket 11 split manufacture, be beneficial to the manufacture difficulty reducing stator 23 and mounting bracket 11.Of course, in embody rule, stator 23 also can manufacture and design with mounting bracket 11 is one-body molded, this setup, is beneficial to the number of components and installation procedure that reduce integrated motor.
Preferably, in the lump with reference to shown in Fig. 2, Fig. 4 and Fig. 5, mounting bracket 11 comprises and is connected to connection support body 112 between rack body 111 and fan housing 22 near the rack body 111 of central shaft of fan housing 22 and several, arbitrary neighborhood two connects support body 112 and all encloses formation air duct 101 with the madial wall of fan housing 22, rack body 111, and stator module 12 is specifically fastenedly connected with each support body 112 that is connected.Herein, by being optimized setting to the structure of mounting bracket 11, both having achieved mounting bracket 11 and the connection of stator module 12, fan housing 22, having achieved again the formation of air duct 101, and its structure simple, be easy to manufacture.
Preferably, in the lump with reference to shown in Fig. 2, Fig. 7 and Fig. 8, the center position of rack body 111 runs through the hollow endoporus 1110 being provided with and installing for bearing (not shown) or bearing holder (housing, cover) (not shown).Embody rule shaft 13 can directly be installed in hollow endoporus 1110 by bearing; Or, rotating shaft 13 is also installed in hollow endoporus 1110 by bearing and the bearing holder (housing, cover) be sheathed on outside bearing, this two schemes all can realize the installation of rotating shaft 13 on mounting bracket 11, supporting and location, and ensure that rotating shaft 13 wears the axiality being installed on and still can being rotated after in mounting bracket 11 and also assures that stator module 12 and bearing are installed on mounting bracket 11 simultaneously.
Preferably, in the lump with reference to shown in Fig. 2, Fig. 4, Fig. 5, Fig. 7 and Fig. 8, connect support body 112 to comprise along the axial component 1121 of axis between stator module 12 and impeller 21 of fan housing 22 and the radial limiting section 1122 of radial direction between stator module 12 and fan housing 22 madial wall along fan housing 22, the end face towards stator module 12 of axial component 1121 is provided with and extends towards stator module 12 the axial limiting portion supporting location for stator module 12., by axial limiting portion, axial limiting is carried out to stator module 12 herein, carry out radial direction by radial limiting section 1122 pairs of stator modules 12 spacing, be beneficial to and ensure that stator module 12 installs the solid and reliable property of locating fan housing 22 in.
Preferably, in the lump with reference to shown in Fig. 4, Fig. 5 and Fig. 7, each axial limiting portion is respectively and extends towards stator module 12 positioning boss 1123 be convexly equipped on each axial component 1121.Positioning boss 11223 is for carrying out axial limiting to stator module 12, because positioning boss 1123 is just convexly equipped in the local surfaces in axial limiting portion 1121, therefore, it is under the prerequisite ensureing bonding strength between mounting bracket 11 and stator module 12, the material usage of mounting bracket 11 can be reduced, thus be beneficial to the material cost reducing mounting bracket 11; And the local projection of positioning boss 1123, the contact area reduced between mounting bracket 11 and stator module 12 can be beneficial to, thus be beneficial to the radiating effect improving stator module 12 further.
Preferably, stator module 12 is fastenedly connected mounting bracket 11 by securing member, and it is easy for installation, reliably fastening.In the lump with reference to shown in Fig. 5, Fig. 7 and Fig. 9, stator module 12 runs through and is provided with several wear connection the first connecting hole 1210 for securing member, positioning boss 1123 is provided with several wear connection the second connecting hole 1120 for securing member.Herein, securing member specifically can be screw or rivet etc.
Preferably, securing member is screw, has one to be light through hole, another is screwed hole in the first connecting hole 1210 and the second connecting hole 1120; Or securing member is the combination of screw and nut, be all light through hole in the first connecting hole 1210 and the second connecting hole 1120.Second connecting hole 1120 specifically can run through setting in the other end (axial limiting portion 1121 is back to the end face of stator module 12) along positioning boss 1123 towards axial limiting portion 1121; Of course, when the thickness of positioning boss 1123 is enough large and the second connecting hole 1120 is screwed hole, the second connecting hole 1120 also can only be located on positioning boss 1123 or the second connecting hole 1120 from positioning boss 1123 to extend in axial limiting portion 1121 but not through-shaft to limiting section 1121.
Preferably, in the lump with reference to shown in Fig. 2, Fig. 4, Fig. 5 and Fig. 8, each axial component 1121 on the end face of impeller 21, be arranged with the wind-guiding groove 110 being communicated in and being adjacent between two air ducts 101.The setting of wind-guiding groove 110, can be beneficial to reduce air-flow flow between impeller 21 and air duct 101 suffered by obstruction, thus be beneficial to the pressure loss compared with little airflow, and then be beneficial to the radiating effect of guarantee stator module 12.
Preferably, in the lump with reference to shown in Fig. 1 ~ 3, the above-mentioned integrated motor with impeller also comprises the control assembly 3 being installed on fan housing 22 and arranging outward and near stator module 12.Control assembly 3 is specifically for the operation of domination set accepted way of doing sth motor, herein, control assembly 3 is arranged near stator module 12, mainly be convenient to the electrical connection realizing stator winding 122 on control assembly 3 and stator module 12, thus be beneficial to the conductor length reduced for connection control assembly 3 and stator module 12; And control assembly 3 is located at outside fan housing 22, be mainly convenient to the heat radiation of stator module 12 and control assembly 3.In the present embodiment, adopt the form be installed on by control assembly 3 outside fan housing 22; Of course, in embody rule, control assembly 3 also can be installed in fan housing 22.
Particularly, in the lump with reference to shown in Fig. 1 ~ 3, control assembly 3 comprise the circuit board 31 that is connected with stator module 12 be installed on circuit board 31 back to the electric capacity 32 on the end face of stator module 12, electric capacity 32 has the external part back to stator module 12., the axis of electric capacity 32 along fan housing 22 is stretched out backward herein, be beneficial to the radial installation dimension reducing integrated motor, and be beneficial to the heat radiation of electric capacity 32.
Preferably, in the lump with reference to shown in Fig. 1 ~ 3, there is between circuit board 31 and fan housing 22 axial spacing 102 and/or radial spacing (not shown), this axial spacing 102 and/or radial spacing can form the passage for air circulation, like this, the inner air and the extraneous air that are beneficial to fan housing 22 realize convection current by this axial spacing 102 and/or radial spacing, thus are beneficial to the radiating effect improving stator module 12 further, and then are beneficial to the useful life extending integrated motor.
Preferably, the external diameter of circuit board 31 is less than the internal diameter of fan housing 22, and like this, being beneficial to the air blast that impeller 21 is produced can dispel the heat to circuit board 31 better, thus is beneficial to the radiating effect improving integrated motor further.
Preferably, in the lump with reference to shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 9, the insulating element 123 that stator module 12 comprises stator core 121, is set around the stator winding 122 on stator core 121 and is located between stator core 121 and stator winding 122, stator core 121 comprises stator yoke 1211 and several are located at stator tooth 1212 in stator yoke 1211, a winding slot 1213 is all formed between arbitrary neighborhood two stator tooth 1212, stator winding 122 is set around the periphery of stator yoke 1211, and stator winding 122 and each air duct 101 are oppositely arranged.Herein, stator winding 122 is set around in stator yoke 1211, stator winding 122 can be saved and be set around the space that stator tooth 1212 needs reserved confession bobbin winding head to wear, improve the groove area utilance of stator core 121, and stator winding 122 can be made can to use the enamelled wire larger than wire diameter in tooth winding mode, thus effectively reduce the resistance of stator winding 122, reduce the coil loss of stator winding 122.In addition, because stator winding 122 and air duct 101 are just oppositely arranged, therefore, its air blast that impeller 21 can be utilized to produce directly cools stator winding 122, reduce the temperature rise of stator winding 122, like this, reduce the copper loss of stator winding 122 on the one hand, thus be beneficial to the efficiency improving integrated motor; The aging speed of insulation on stator winding 122 can be slowed down on the other hand, and then be beneficial to the useful life extending integrated motor.
Preferably, in the lump with reference to shown in Fig. 1 ~ 3, circuit board 31 is connected by screw or the connected mode such as rivet is fastenedly connected insulating element 123, insulating element 123 is convexly equipped with the erection column 1231 that several are fastenedly connected for circuit board 31, by the setting of erection column 1231, also can be beneficial to and make to be formed between circuit board 31 and fan housing 22 and for the axial spacing 102 of air circulation, and then the radiating effect improving stator module 12 and control assembly 3 can be beneficial to.
Particularly, in the lump with reference to shown in Fig. 2, Fig. 4, Fig. 5, Fig. 7 and Fig. 9, each stator tooth 1212 circumferentially interval is convexly equipped on the madial wall of stator yoke 1211, the lateral wall of stator yoke 1211 is convexly equipped with several and protrudes connecting portion 1214, each protrusion connecting portion 1214 all runs through and is provided with the first connecting hole 1210, stator core 121 is fastenedly connected each connection support body 112 especially by protrusion connecting portion 1214., protrude the setting of connecting portion 1214 herein, be beneficial to the electromagnetic performance making the installation position on stator core 121 can not affect stator core 121 on the one hand; Be beneficial on the other hand and make all to enclose formation heat dissipation wind channel between any two adjacent protrusion connecting portions 1214 and stator yoke 1211 lateral wall, fan housing 22 madial wall, like this, stator winding 122 is set around after in stator yoke 1211 there is the part being arranged in heat dissipation wind channel, and one end of heat dissipation wind channel is communicated with air duct 101, the other end is communicated with axial spacing 102, thus be beneficial to the air blast produced by impeller 21 and carry out cooling stator winding 122, effectively to improve the radiating effect of stator winding 122.
Preferably, the integrated motor of what the embodiment of the present invention provided have impeller preferably has the high-speed small-size integrated motor (as rotating speed is greater than the micro-machine of 10000rpm) of impeller 2121, like this, structure and the installation procedure of high-speed small-size integrated motor can be simplified dramatically, and effectively improve efficiency and the radiating effect of high-speed small-size integrated motor.
The integrated motor of what the embodiment of the present invention provided have impeller, eliminate the design of electric motor end cap and motor case, and the air blast utilizing impeller 21 to produce dispels the heat to stator module 12, its structure is simple, compact conformation, volume is little, material usage is few, number of components is few, easy for installation, excellent in heat dissipation effect, electric efficiency is high, long service life, and be applied to dust catcher when it, air exhauster, exhaust blower, air cleaner, hand dryer, air pump, time in the equipment such as fan, efficiency and the useful life of these equipment can be improved dramatically, and the cost of these equipment can be reduced.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement or improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. there is the integrated motor of impeller, it is characterized in that: comprise motor body and the impeller assembly being installed on described motor body one end, described motor body comprises mounting bracket, be installed on the stator module on described mounting bracket, wear the rotating shaft be installed in described mounting bracket and the rotor be installed in described rotating shaft, described impeller assembly comprises the impeller being installed on described rotating shaft one end and the fan housing covered at outside described impeller and described motor body, described mounting bracket is fastenedly connected described fan housing, and be formed with several between the madial wall of described mounting bracket and described fan housing and be communicated in air duct between described impeller and described stator module.
2. there is the integrated motor of impeller as claimed in claim 1, it is characterized in that: described mounting bracket comprises the rack body with hollow endoporus and several are connected to connection support body between described rack body and described fan housing, connects support body and all enclose formation described air duct with the madial wall of described fan housing, described rack body described in arbitrary neighborhood two.
3. there is the integrated motor of impeller as claimed in claim 2, it is characterized in that: described connection support body comprises along the axial component of axis between described stator module and described impeller assembly of described fan housing and the radial limiting section of radial direction between described stator module and described housing interior side-wall along described fan housing, described axial component is provided with and extends towards described stator module the axial limiting portion supporting location for described stator module.
4. there is the integrated motor of impeller as claimed in claim 3, it is characterized in that: each described axial limiting portion is respectively and extends towards described stator module the positioning boss be convexly equipped on each described axial component.
5. there is the integrated motor of impeller as claimed in claim 4, it is characterized in that: described stator module is fastenedly connected described mounting bracket by securing member, described stator module runs through and is provided with several wear connection the first connecting hole for securing member, described positioning boss is provided with several wear connection the second connecting hole for described securing member.
6. the integrated motor with impeller as described in any one of claim 3 to 5, is characterized in that: what each described axial part was divided is arranged with the wind-guiding groove being communicated in and being adjacent described in two between air duct on the end face of described impeller.
7. the integrated motor with impeller as described in any one of claim 1 to 5, is characterized in that: described impeller assembly also comprises along the stator be axially located between described impeller and described mounting bracket of described fan housing.
8. there is the integrated motor of impeller as claimed in claim 7, it is characterized in that: described stator and described mounting bracket split manufacture shaping, and described stator is fastening is installed on described mounting bracket; Or, described stator and described mounting bracket one-body molded.
9. the integrated motor with impeller as described in any one of claim 1 to 5, it is characterized in that: also comprise the control assembly arranged near described stator module, described control assembly comprises the circuit board that is connected with described stator module and is installed on described circuit board and the electric capacity that extends back to described stator module of external part.
10. the integrated motor with impeller as described in any one of claim 1 to 5, it is characterized in that: described stator module comprises stator core and stator winding, described stator core comprises stator yoke and several are located at stator tooth in described stator yoke, described stator winding is set around the periphery of described stator yoke, and described stator winding and each described air duct are oppositely arranged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510515036.8A CN105024491B (en) | 2015-08-20 | 2015-08-20 | integrated motor with impeller |
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| CN201510515036.8A CN105024491B (en) | 2015-08-20 | 2015-08-20 | integrated motor with impeller |
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| CN105024491A true CN105024491A (en) | 2015-11-04 |
| CN105024491B CN105024491B (en) | 2018-03-27 |
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Cited By (10)
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| CN106849412A (en) * | 2017-03-30 | 2017-06-13 | 宁波富佳实业有限公司 | A kind of brushless electric machine |
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| CN107040090A (en) * | 2017-04-28 | 2017-08-11 | 广东威灵电机制造有限公司 | Impeller assembly, integrated motor and household electrical appliance |
| CN107131154A (en) * | 2017-04-28 | 2017-09-05 | 广东威灵电机制造有限公司 | Blower fan system and electric device |
| CN108374794A (en) * | 2017-01-31 | 2018-08-07 | 日本电产株式会社 | Air-supply arrangement and dust catcher |
| CN110464245A (en) * | 2019-08-28 | 2019-11-19 | 鹤山市恒富微型电机有限公司 | A kind of blower motor and its dust catcher |
| WO2020244314A1 (en) * | 2019-06-03 | 2020-12-10 | 东莞福莱仕智能电子科技有限公司 | Vacuum cleaner motor device and vacuum cleaner |
| WO2021027079A1 (en) * | 2019-08-09 | 2021-02-18 | 美的威灵电机技术（上海）有限公司 | Fan and electric appliance |
| CN112421881A (en) * | 2020-11-02 | 2021-02-26 | 合肥珺安机电设备有限公司 | External rotor electric machine with heat dissipation function |
| CN112806902A (en) * | 2019-11-18 | 2021-05-18 | 珠海格力电器股份有限公司 | Motor and dust catcher |
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| CN114483654A (en) * | 2017-04-28 | 2022-05-13 | 广东威灵电机制造有限公司 | Fan system and electric appliance |
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