CN108443194A - A kind of motor periphery formula inner flow passage propeller fan - Google Patents
A kind of motor periphery formula inner flow passage propeller fan Download PDFInfo
- Publication number
- CN108443194A CN108443194A CN201810653023.0A CN201810653023A CN108443194A CN 108443194 A CN108443194 A CN 108443194A CN 201810653023 A CN201810653023 A CN 201810653023A CN 108443194 A CN108443194 A CN 108443194A
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- China
- Prior art keywords
- impeller
- motor
- hollow axle
- support base
- hollow
- Prior art date
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 48
- 238000010276 construction Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000007812 deficiency Effects 0.000 abstract description 4
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
- F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/053—Shafts
Abstract
The present invention provides a kind of motor periphery formula inner flow passage propeller fans, including：Upper end sealing cover, rotary components, motor stator, engine base, sealing ring, support base, central rotating shaft, rotor, hollow axle, impeller, wheel hub；The hollow axle is the Wind cylinder structure of axial flow blower in the prior art, and the hollow part inside hollow axle is equipped with impeller；The centre of the impeller is equipped with wheel hub, and wheel hub is mounted on by bearing on central rotating shaft；The central rotating shaft is mounted on the top of support base, and the centre position structure in rounded shape of support base.Motor periphery formula inner flow passage propeller fan has hollow duct, and motor is self cooling, bidirectional ventilated feature；Impeller periphery has many advantages, such as loop configuration and can bear high rotating speed, and compact-sized and weight is relatively light, the problem of being proposed in background technology one to the effective solution present invention and deficiency.
Description
Technical field
The present invention relates to fluid machinery technical fields, and more specifically more particularly to a kind of draught fan impeller is mounted on motor
Rotor center, axial ventilator of the realization fan airflow runner in motor internal flow.
Background technology
Traditional axial flow fan structure is usually that motor is mounted on inside air duct, and impeller is directly installed on motor one end axis
Stretch position；Alternatively, impeller is by the transmission mechanisms such as belt pulley, gear-box and motor drive axis connection, wind turbine and motor are generally
For split structure.According to the relationship of the performance number (pressure and flow) of wind turbine and diameter, rotating speed, the performance number of propeller fan
Directly proportional to the rotating speed of impeller and diameter, the performance of wind turbine can be improved by increasing rotating speed and increasing impeller diameter.Conventional axial flow leaf
Blade, in the case where material property is certain, can be continued to improve wheel by the centrifugation force effect of opposite bigger when rotating at high speed
Wheel speed, which obtains bigger performance, will exceed the stress limit of material；In addition, by the drive mechanisms such as belt pulley, gear-box into
Row driving, can not provide the actuating speed of requirements at the higher level, such as to improve fan performance in traditional axial flow blower structure, turn
In the case that speed is constant, it need to accordingly increase the diameter of impeller and the occupied space of wind turbine, therefore traditional structure wind turbine cannot be satisfied sky
Between the specific occasion that is restricted.
Traditional propeller fan driving motor is mounted on air duct inside or individually external by transmission mechanism, is required to match
It is motor radiating to be equipped with tail portion fan, or is radiated for it equipped with independent cooling mechanism.
This Rotor of Axial Flow Fan is placed in motor shaft centre, and motor is in the integral structure of impeller periphery, leaf
Wheel, rotor and hollow axle are monolithic construction, and motor stator is rotated by electromagnetism power drive rotor, rotor and leaf
Wheel is integral structure, is equivalent to motor direct-drive impeller, has abandoned the transmission mechanism of conventional axial flow wind turbine, meanwhile, motor
Shaft forms garter spring outside impeller, can be effectively improved force-bearing situation when blade rotation, impeller can be in opposite conventional leaf
It is rotated under wheel higher speed, motor center position is the runner of wind turbine, and the air draught of wind turbine conveying directly flows in the middle part of motor
It crosses, directly cooled machine.The motor periphery formula inner flow passage axial ventilator structure, fundamentally solves motor radiating and asks
Topic and blade high-revolving problem after fan impeller rotating speed improves, interior in a limited space can meet high pressure, height
The requirement of flow.
In view of this, studied improvement for existing problem, a kind of draught fan impeller is provided and is mounted in rotor
The heart, realize fan airflow runner motor internal flow axial ventilator, it is intended to by the technology, reach solve the problems, such as with
Improve the purpose of practical value.
Invention content
The purpose of the present invention is to provide a kind of motor periphery formula inner flow passage propeller fans, to solve above-mentioned background technology
The problem of traditional propeller fan of middle proposition is as general as split structure with motor and deficiency.
To achieve the above object, the present invention provides a kind of motor periphery formula inner flow passage propeller fans, by detail below
Technological means is reached：
A kind of motor periphery formula inner flow passage propeller fan, including：Upper end sealing cover, rotary components, motor stator, machine
Seat, sealing ring, support base, central rotating shaft, rotor, hollow axle, impeller, wheel hub；It is characterized in that：The hollow axle
For the Wind cylinder structure of axial flow blower in the prior art, and the hollow part inside hollow axle is equipped with impeller；The impeller
Centre is equipped with wheel hub, and wheel hub is mounted on by bearing on central rotating shaft；The central rotating shaft is mounted on support base
Top, and the centre position structure in rounded shape of support base；The outside of the support base is provided with concentric ring-shaped structure, and
The round structure of support base and the ring-shaped structure of support base are made up of whole the rectangular-shaped dowel of circular array at three
Body formula structure；The top of the support base ring-shaped structure is equipped with the sealing ring of the hollow horn shape of integral structure, and
Sealing ring top is provided with annulus, and sealing ring is flexibly connected with hollow axle formation；Pacify on the outer wall of the hollow axle
Equipped with rotor；The top of the support base ring-shaped structure is equipped with cylindric engine base, and the madial wall installation of engine base
There is motor stator；The top of the engine base is equipped with upper end sealing cover, and upper end sealing cover is in hollow horn shape；The upper end
Be provided with flange at the top of the hollow horn shape of sealing cover, and the bottom of the hollow horn shape of upper end sealing cover offer with it is hollow
Shaft is in the circle shape groove of transition cooperation.
It is electric described in a kind of motor periphery formula inner flow passage propeller fan of the present invention as advanced optimizing for the technical program
Machine rotor, hollow axle, impeller and wheel hub constitute integrally-built rotary components, and rotary components are in three around central rotating shaft
Degrees rotate.
As advanced optimizing for the technical program, described in a kind of motor periphery formula inner flow passage propeller fan of the present invention in
Pony axle forms garter spring structure in the external of impeller, and the runner that the centre of hollow axle is fluid.
As advanced optimizing for the technical program, described in a kind of motor periphery formula inner flow passage propeller fan of the present invention in
The top of pony axle garter spring structure is fastened in the groove of upper end sealing cover, and hollow axle is flexibly connected with upper end sealing cover.
As advanced optimizing for the technical program, described in a kind of motor periphery formula inner flow passage propeller fan of the present invention in
The inner sidewall diameter of pony axle and the diameter of impeller coordinate in transition.
As advanced optimizing for the technical program, described in a kind of motor periphery formula inner flow passage propeller fan of the present invention on
The top of end sealing cover and support base is both provided with the mounting hole of engine base, and upper end sealing cover and the mounting hole on support base top are
Cylindric counter sink.
Due to the application of the above technical scheme, the present invention has following advantages compared with prior art：
1, Impeller Design of the invention is mounted on motor center, and draught fan impeller and rotor are an entirety, and motor turns
Direct drive blower impeller rotation when son rotation；Bearing is installed in impeller hub, realizes the rotation function of rotatable parts.
2, the present invention makes hollow part of the extraneous air directly through hollow axle, and direct cooling has been carried out to motor, electricity
Machine installs cooling fan additional without additional.
3, the present invention makes extraneous air that can enter the impeller inside wind turbine hollow axle from upper end or lower end, according to impeller
Blade construction and direction of rotation can realize that the two-way conveying air in upper end or lower end, and two-way pneumatic performance is without significant difference.
4, impeller blade periphery of the invention is hollow axle, and the loop configuration of blade exterior can substantially lower impeller high speed
Internal stress when rotation and strain, the stress of distribution blade blade tip improve the tolerance zone of blade rotary speed, therefore such
Impeller can realize the requirement than common axial flow blower higher rotating speed.
5, the Wind cylinder structure that the present invention has to without conventional axial flow wind turbine, and the hollow axle of cylinder-like structure is simultaneously
Rotor installs garter spring, can effectively mitigate the weight of wind turbine.
6, the present invention is by a kind of improvement of motor periphery formula inner flow passage propeller fan, having hollow duct, motor
Self cooling, bidirectional ventilated feature；The advantages that impeller loop configuration and pressure coefficient height, compact-sized and weight is relatively light, from
And effective solution present invention the problem of being proposed in background technology one and deficiency.
Description of the drawings
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the axis geodesic structure schematic diagram of the present invention；
Fig. 2 faces schematic cross-sectional view for the present invention's；
Fig. 3 is the rotary components structural schematic diagram of the present invention.
In figure：Upper end sealing cover 1, rotary components 2, motor stator 3, engine base 4, sealing ring 5, support base 6, central rotating shaft 7,
Rotor 8, hollow axle 9, impeller 10, wheel hub 11.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
It should be noted that in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two with
On；The orientation of the instructions such as term "upper", "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion "
Or position relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, and
It is not that the device of instruction or hint meaning or element must have a particular orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.
In addition, term " first ", " second ", " third " etc. are used for description purposes only, it is not understood to indicate or imply
Relative importance.
Meanwhile in the description of the present invention unless specifically defined or limited otherwise, term " connected ", " connection " should be done
It broadly understood, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；Can be mechanical connection,
Can also be to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Fig. 1 to Fig. 3 is referred to, the present invention provides a kind of particular technique implementation of motor periphery formula inner flow passage propeller fan
Scheme：
A kind of motor periphery formula inner flow passage propeller fan, including：Upper end sealing cover 1, rotary components 2, motor stator 3,
Engine base 4, sealing ring 5, support base 6, central rotating shaft 7, rotor 8, hollow axle 9, impeller 10, wheel hub 11；It is characterized in that：
Hollow axle 9 is the Wind cylinder structure of axial flow blower in the prior art, and the hollow part inside hollow axle 9 is equipped with impeller
10；The centre of impeller 10 is equipped with wheel hub 11, and wheel hub 11 is mounted on by bearing on central rotating shaft 7；Central rotating shaft 7 is pacified
Mounted in the top of support base 6, and the centre position structure in rounded shape of support base 6；The outside of support base 6 is provided with concentric circle
Cyclic structure, and the ring-shaped structure of the round structure of support base 6 and support base 6 by three circular array it is rectangular-shaped
Dowel constitutes monolithic construction；The top of 6 ring-shaped structure of support base is provided with the hollow horn shape of integral structure
Sealing ring 5, and hollow axle 9 is installed on the outer wall on 5 top of sealing ring, and sealing ring 5 connects with 9 formation activity of hollow axle
It connects；Rotor 8 is installed on the outer wall of hollow axle 9；The top of 6 ring-shaped structure of support base is equipped with cylindric engine base
4, and the madial wall of engine base 4 is equipped with motor stator 3；The top of engine base 4 is equipped with upper end sealing cover 1, and upper end sealing cover 1 is in
Hollow horn shape；It is provided with flange at the top of 1 hollow horn shape of upper end sealing cover, and upper end sealing cover 1 is hollow tubaeform
It is in the circle shape groove of transition cooperation that the bottom of shape, which is offered with hollow axle 9,.
Specifically, rotor 8 constitutes integrally-built rotary components 2 with hollow axle 9 and impeller 10 and wheel hub 11,
And rotary components 2 are rotated around central rotating shaft 7 in 360 deg, the rotation of impeller 10 does work to air, forms ventilation by axial flow fan
Machine, rotary components 2 are rigid overall structure, are directly driven by motor stator 3, impeller 10, hollow axle 9, wheel hub 11 are integrated
Casting.
Specifically, hollow axle 9 forms garter spring structure in the external of impeller 10, and the centre of hollow axle 9 is logical
The runner of wind turbine.
Specifically, the top of 9 garter spring structure of hollow axle is fastened in the groove of upper end sealing cover 1, and hollow axle 9 with
Upper end sealing cover 1 is flexibly connected.
Specifically, the inner sidewall diameter of hollow axle 9 and the diameter of impeller 10 coordinate in transition.
Specifically, the top of upper end sealing cover 1 and support base 6 is both provided with the mounting hole of engine base 4, and upper end sealing cover 1
Mounting hole with 6 top of support base is cylindric counter sink, and upper end sealing cover 1 and the superstructure of hollow axle 9 form upper end
Lower end sealing, upper end sealing cover 1 and the water conservancy diversion that sealing ring 5 is fluid are formed at the lower part of sealing, sealing ring 5 and hollow axle 9
Or diffusion structure.
Specific implementation step：
Impeller 10 is placed in the inside of hollow axle 9, and motor is that the external of impeller 10 surrounds structure, the periphery of hollow axle 9
For rotor 8, rotor 8 forms a rigid overall structure with hollow axle 9 and impeller 10 and wheel hub 11, forms rotation
Turn component 2, directly driven by motor stator 3, motor stator 3 is rotated by electromagnetic force driving motor rotor 8, and rotary components 2 enclose
It is rotated around central rotating shaft 7, forms gas channel inside motor；Hollow axle 9 etc. is all the air duct runner of axial ventilator
Wall surface, rotary components 2 rotate when formed inner flow passage structure, extraneous air directly through hollow axle 9 hollow part, to motor
Direct cooling is carried out, motor installs cooling fan additional without additional；Extraneous air can be hollow into wind turbine from upper end or lower end
Impeller 10 inside shaft 9 can be realized empty to the two-way conveying in upper end or lower end according to the blade construction of impeller 10 and direction of rotation
Gas, and two-way pneumatic performance is without significant difference；The blade periphery of impeller 10 is hollow axle 9, the loop configuration energy of blade exterior
Substantially lower internal stress when 10 high speed rotation of impeller, the stress of distribution blade blade tip improves the allowable of blade rotary speed
Range, therefore such impeller 10 can realize that the requirement than common axial flow blower higher rotating speed, the hollow axle of wind tubular structure are same
When for rotor install garter spring, can effectively mitigate the weight of wind turbine.
In summary：A kind of motor periphery formula inner flow passage propeller fan is mounted on motor center by designing impeller,
Draught fan impeller and rotor are an entirety, rotor direct drive blower impeller rotation when rotating；It is installed in impeller hub
Bearing realizes the rotation function of rotatable parts；Extraneous air has carried out directly motor directly through the hollow part of hollow axle
Cooling is connect, motor installs cooling fan additional without additional；Extraneous air can enter inside wind turbine hollow axle from upper end or lower end
Impeller, can be realized to the two-way conveying air in upper end or lower end, and two-way pneumatic according to the blade construction of impeller and direction of rotation
Performance is without significant difference；Impeller blade periphery is hollow axle, and the loop configuration of blade exterior can substantially lower impeller high speed and revolve
Internal stress when turning and strain, the stress of distribution blade blade tip improve the tolerance zone of blade rotary speed, therefore such leaf
The requirement than common axial flow blower higher rotating speed can be achieved in wheel；The Wind cylinder structure that no conventional axial flow wind turbine has to, and air duct
The hollow axle of shape structure installs garter spring for rotor simultaneously, can effectively mitigate the weight of wind turbine, the present invention passes through to one kind
The improvement of motor periphery formula inner flow passage propeller fan has hollow duct, and motor is self cooling, bidirectional ventilated feature；Vane rings
The advantages that shape structure and pressure coefficient height, compact-sized and weight is relatively light, to which the effective solution present invention is in background
The problem of being proposed in technology one and deficiency.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of motor periphery formula inner flow passage propeller fan, including：Upper end sealing cover (1), rotary components (2), motor stator
(3), engine base (4), sealing ring (5), support base (6), central rotating shaft (7), rotor (8), hollow axle (9), impeller (10),
Wheel hub (11)；It is characterized in that：The hollow axle (9) is the Wind cylinder structure of axial flow blower in the prior art, and hollow axle
(9) internal hollow part is equipped with impeller (10)；The centre of the impeller (10) is equipped with wheel hub (11), and wheel hub
(11) it is mounted on central rotating shaft (7) by bearing；The central rotating shaft (7) is mounted on the top of support base (6), and support base
(6) centre position structure in rounded shape；The outside of the support base (6) is provided with concentric ring-shaped structure, and support base
(6) round structure constitutes monolithic construction by the rectangular-shaped dowel of circular array at three；Support base (6) circle
The top of cyclic structure is provided with the sealing ring (5) of the hollow horn shape of integral structure, and the outer wall on sealing ring (5) top
On hollow axle (9) is installed, and sealing ring (5) is flexibly connected with hollow axle (9) formation；The hollow axle (9)
Rotor (8) is installed on outer wall；The top of support base (6) ring-shaped structure is equipped with cylindric engine base (4), and
The madial wall of engine base (4) is equipped with motor stator (3)；The top of the engine base (4) is equipped with upper end sealing cover (1), and upper end
Sealing cover (1) is in hollow horn shape；It is provided with flange, and upper end at the top of the hollow horn shape of the upper end sealing cover (1)
It is in the circle shape groove of transition cooperation that the bottom of sealing cover (1) hollow horn shape, which is offered with hollow axle (9),.
2. a kind of motor periphery formula inner flow passage propeller fan according to claim 1, it is characterised in that：The motor turns
Sub (8) constitute integrally-built rotary components (2), and rotary components with hollow axle (9) and impeller (10) and wheel hub (11)
(2) central rotating shaft (7) is surrounded to rotate in 360 deg.
3. a kind of motor periphery formula inner flow passage propeller fan according to claim 1, it is characterised in that：The middle idle running
Axis (9) forms garter spring structure in the external of impeller (10), and the runner that the hollow part of hollow axle (9) is fluid.
4. a kind of motor periphery formula inner flow passage propeller fan according to claim 1, it is characterised in that：The middle idle running
The top of axis (9) hoop cyclic structure is fastened in the groove of upper end sealing cover (1), and hollow axle (9) and upper end sealing cover (1)
Flexible connection.
5. a kind of motor periphery formula inner flow passage propeller fan according to claim 1, it is characterised in that：The middle idle running
The madial wall of axis (9) is directly connected to impeller (10), is overall structure.
6. a kind of motor periphery formula inner flow passage propeller fan according to claim 1, it is characterised in that：The upper end is close
The top of capping (1) and support base (6) is both provided with the mounting hole of engine base (4), and on upper end sealing cover (1) and support base (6)
The mounting hole in portion is cylindric counter sink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810653023.0A CN108443194B (en) | 2018-06-22 | 2018-06-22 | Peripheral type inner runner axial flow fan of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810653023.0A CN108443194B (en) | 2018-06-22 | 2018-06-22 | Peripheral type inner runner axial flow fan of motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108443194A true CN108443194A (en) | 2018-08-24 |
| CN108443194B CN108443194B (en) | 2024-03-12 |
Family
ID=63207166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810653023.0A Active CN108443194B (en) | 2018-06-22 | 2018-06-22 | Peripheral type inner runner axial flow fan of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108443194B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340180A (en) * | 2018-11-09 | 2019-02-15 | 仪坤动力科技（上海）有限公司 | Blade and internal rotor integral structure and blade and the integrated blower of internal rotor |
| CN109372773A (en) * | 2018-11-09 | 2019-02-22 | 仪坤动力科技（上海）有限公司 | A kind of blade and the integrated blower of internal rotor |
| CN109826811A (en) * | 2019-03-18 | 2019-05-31 | 黄承志 | A kind of electromagnetic induction air blower and its working method |
| CN112412840A (en) * | 2019-08-23 | 2021-02-26 | 广东美的环境电器制造有限公司 | Air supply device |
| CN112847839A (en) * | 2020-12-31 | 2021-05-28 | 惠州市金康瑞科技有限公司 | Dust recovery system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109826811A (en) * | 2019-03-18 | 2019-05-31 | 黄承志 | A kind of electromagnetic induction air blower and its working method |
| CN112412840A (en) * | 2019-08-23 | 2021-02-26 | 广东美的环境电器制造有限公司 | Air supply device |
| CN112847839A (en) * | 2020-12-31 | 2021-05-28 | 惠州市金康瑞科技有限公司 | Dust recovery system |
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