CN107701469A - A kind of centrifugal blower, air cleaning unit - Google Patents
A kind of centrifugal blower, air cleaning unit Download PDFInfo
- Publication number
- CN107701469A CN107701469A CN201710995888.0A CN201710995888A CN107701469A CN 107701469 A CN107701469 A CN 107701469A CN 201710995888 A CN201710995888 A CN 201710995888A CN 107701469 A CN107701469 A CN 107701469A
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- China
- Prior art keywords
- spiral case
- blower
- centrifugal blower
- motor
- volute
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- 238000004140 cleaning Methods 0.000 title claims abstract description 11
- 229920000742 Cotton Polymers 0.000 claims abstract description 6
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 230000008030 elimination Effects 0.000 claims description 8
- 238000003379 elimination reaction Methods 0.000 claims description 8
- 238000004080 punching Methods 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims 1
- 230000000644 propagated effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 27
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 241000237858 Gastropoda Species 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003860 sleep quality Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
-
- 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
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of centrifugal blower, air cleaning unit, wherein centrifugal blower includes：Draught fan impeller and motor, the motor drive the draught fan impeller to be rotated when rotating, and the draught fan impeller, the motor are arranged in volute of blower, and the volute of blower is perforated plate spiral case.The noise that the present invention reduces centrifugal blower and propagated by gas outlet on the basis of blower fan complexity and volume is not changed by installing perforated plate spiral case, while the air quantity for improving centrifugal blower can realize low noise big flow.Mixed wind chamber is entered by perforated plate by the most noise of centrifugal blower, and dissipates in mixed wind intracavitary or is absorbed by sound insulation cotton, and then reduces the noise size of gas outlet propagation.Simultaneously as a part of air-flow enters blower fan by perforated plate, and discharged by gas outlet, add the air quantity of blower fan.
Description
Technical field
The present invention relates to field of fluid machinery, air purification field, espespecially a kind of centrifugal blower, air cleaning unit.
Background technology
With the fast development of economic society, the discharge capacity of vehicle exhaust and industrial waste gas is increasing, cause haze by
Gradually turn into a kind of one of factor for having a strong impact on health of people.In order to reduce influence of the haze to people, air purifier and new
Wind system starts the life necessary equipment as contemporary family.Its general principle is all by indoor or outdoor air suction one
In the individual machine with filtering function, and filtered air is discharged into interior, contained so as to significantly reduce the PM2.5 in air
Amount.Wherein, ventilation blower is to realize one of critical component of the function.
Ventilation blower mainly has two kinds of centrifugal fan and axial fan at present.Wherein, centrifugal fan is one
Kind by input mechanical energy, improve gas pressure and supply gas side by side the machinery of body.Compared with axial fan, centrifugal ventilation
Machine has the advantages that structure installation is simple, and ventilation is big and blast is high, and is widely used in air purifier and VMC.
But centrifugal fan but have one it is obvious the shortcomings that, i.e., work noise is big.Life, the work of this noise on human
Etc. there is the influence that can not be ignored, such as it can reduce people's sleep quality, and strong noise even makes one to fall asleep.Cause
This, country is proposed GB/18801-2015 within 2015《Air purifier》National standard, noise of air purifier is entered with this
Strict limitation is gone.
For centrifugal blower, noise caused by impeller rotation is the Main Noise Sources of blower fan.Due to the presence of spiral case,
Sonic propagation of making an uproar can have been obstructed to a certain extent.However, traditional spiral case is generally rigid spiral case, sound wave passes through inside it
Crossing after the reflection of certain number can still blaze abroad from fan air inlet and gas outlet, and then cause traditional centrifugal blower
Noise is larger.In addition, traditional centrifugal blower typically sucks air from side-edge air bleeds, and the diameter of air inlet is generally less than leaf
Wheel so that the pressure loss of air is larger, is unfavorable for improving the flow of blower fan.Simultaneously as the gas inside centrifugal blower volute
Flow velocity degree is more than outside, and according to bernoulli principle, internal air pressure is also less than outside accordingly.If spiral case surface exists certain
Passage, the flow of centrifugal blower will necessarily be increased.
For VMC, the air inlet of centrifugal blower typically passes through the chamber (mixed wind chamber) of certain volume and outdoor
Air is communicated, and gas outlet is communicated by VMC internal gas flow passage with indoor environment.A noise part for centrifugal blower
Environment is got in by gas outlet, another part gets in environment by gas channel (to be had in gas channel certain
Loss).In order to reduce noise radiation, mixed wind intracavitary portion generally is configured with Sound-proof material, and therefore, a part of noise passes through Sound-proof material
Directly absorb.Another part noise after the reflection of certain number, is dissipated in mixed wind intracavitary due to Phase Stacking.From this
Process angle considers, if making as far as possible more noises enter the noise that mixed wind chamber is advantageous to reduce gas outlet, can reduce whole fresh air
The noise of system.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of centrifugal blower, do not change blower fan complexity with
And the noise for reducing centrifugal blower by installing perforated plate spiral case on the basis of volume and being propagated by gas outlet, while improve centrifugation
The air quantity of blower fan can realize low noise big flow.
In order to reach the object of the invention, the invention provides a kind of centrifugal blower, including：Draught fan impeller and motor, it is described
Motor drives the draught fan impeller to be rotated when rotating, and the draught fan impeller, the motor are arranged in volute of blower, described
Volute of blower is perforated plate spiral case.
Further, the perforation on the perforated plate spiral case is vent muffler.
Further, the punching rate of the perforated plate spiral case is not more than 20%.
Further, the motor is fixed in the volute of blower by electric machine support, and the electric machine support passes through electricity
Machine fixing hole fixes motor, and the electric machine support is fixed on the volute of blower by spiral case mounting hole.
Further, the volute of blower includes：Spiral case body, noise elimination stomata, air inlet and gas outlet,
The air inlet is the circular cross-section opening for being arranged in the spiral case body tail section,
The gas outlet is that section is the quadrangular section opening for being opened in the spiral case body head,
The noise elimination stomata is to be opened in the aperture openings that diameter is set on the surfaces externally and internally of the spiral case body.
Further, draught fan impeller is made up of two leaflet wheels in the axial direction, and two leaflet wheel offset angulars are set.
Further, the draught fan impeller includes：Multigroup blade and blade support piece, the blade support piece is by described in
Blade is divided into two component impellers of left and right, and the length of each leaflet wheel is the half of the draught fan impeller length.
Further, the volute of blower also includes：Absorb sound insulation cotton.
The invention provides a kind of air cleaning unit, including described centrifugal blower.
Further, the air cleaning unit includes：Air purifier and/or VMC.
Compared with prior art, centrifugal blower of the invention includes：Draught fan impeller and motor, the motor drive when rotating
The draught fan impeller is rotated, and the draught fan impeller, the motor are arranged in volute of blower, and the volute of blower is perforation
Plate spiral case.Mixed wind chamber is entered by perforated plate by the most noise of perforated plate spiral case in centrifugal blower, and mixed
Wind intracavitary dissipates or absorbed by sound insulation cotton, and then reduces the noise size of gas outlet propagation.Simultaneously as a part of air-flow
Blower fan is entered by perforated plate, and discharged by gas outlet, adds the air quantity of blower fan.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by specification, rights
Specifically noted structure is realized and obtained in claim and accompanying drawing.
Brief description of the drawings
Accompanying drawing is used for providing further understanding technical solution of the present invention, and a part for constitution instruction, with this
The embodiment of application is used to explain technical scheme together, does not form the limitation to technical solution of the present invention.
Fig. 1 is the centrifugal blower entirety assembling schematic diagram of the present invention；
Fig. 2 is the structural representation of volute of blower；
Fig. 3 is the structural representation of draught fan impeller；
Fig. 4 is Fig. 3 axial schematic diagram；
Fig. 5 is the motor schematic diagram in Fig. 1；
Fig. 6 is the electric machine support schematic diagram in Fig. 1.
Embodiment
The principle of the disclosure is described referring now to some example embodiments.It is appreciated that these embodiments are merely for saying
It is bright and help it will be understood by those skilled in the art that with the purpose of the embodiment disclosure and describe, rather than suggest the model to the disclosure
Any restrictions enclosed.Content of this disclosure described here can in a manner of described below outside various modes implement.
As described herein, term " comprising " and its various variants are construed as open-ended term, it means that " bag
Include but be not limited to ".Term "based" is construed as " being based at least partially on ".Term " one embodiment " it is understood that
For " at least one embodiment ".Term " another embodiment " is construed as " at least one other embodiment ".
It refer to Fig. 1, a kind of centrifugal blower in the present embodiment, including：Draught fan impeller 2 and motor 3, the motor 3 revolve
The draught fan impeller 2 is driven to be rotated when turning, the draught fan impeller 2, the motor 3 are arranged in volute of blower 1, the wind
Machine spiral case 1 is perforated plate spiral case.Preferably, orifice plate spiral case can be hollow structure.It is different from traditional spiral case and is generally rigid snail
Shell, sound wave can still blaze abroad inside it after the reflection of certain number from fan air inlet and gas outlet.As
Preferred in the present embodiment, the perforation on the perforated plate spiral case 1 is vent muffler.Pass through perforated plate spiral case in the present embodiment
The volute of blower of 1 vent muffler so that most noise enters mixed wind chamber by perforated plate, and is dissipated in mixed wind intracavitary
Or absorbed by sound insulation cotton, and then reduce the noise size of gas outlet propagation.Simultaneously as a part of air-flow passes through perforated plate
Discharged into blower fan, and by gas outlet, add the air quantity of blower fan.Traditional centrifugal blower is different from typically from side air inlet
Mouth suction air, and the diameter of air inlet is generally less than impeller so that the pressure loss of air is larger, is unfavorable for improving blower fan
Flow., can a certain degree of flow for increasing centrifugal blower in the present embodiment by the passage on spiral case surface.
As preferred in the present embodiment, the punching rate of the perforated plate spiral case is not more than 20%, in the present embodiment
Centrifugal blower in order to maintain the structural strength of volute of blower and maintain air-flow inside air-flow ride comfort, then perforated plate perforation
Rate can not be more than 20%.As shown in Fig. 2 noise elimination through hole 5 is deployed on the surfaces externally and internally of the perforated plate spiral case.
Fig. 2, Fig. 6 be refer to as preferred in the present embodiment, in certain embodiments, structure such as Fig. 6 of electric machine support 4
It is shown, spiral case mounting hole 12 and motor fixing hole 13 are being provided with, the motor 3 is fixed on described by electric machine support 4
In volute of blower 1, the electric machine support 4 fixes motor by motor fixing hole 13, and the electric machine support 4 passes through spiral case mounting hole
12 are fixed on the volute of blower 1.Specifically, motor 3 is fixed by bolt through motor fixing hole 13 makes it be fixed on electricity
On machine support 4.Electric machine support 4 is fixed on perforated plate volute of blower 1 by spiral case mounting hole 12.Above-mentioned type of attachment to wear
Orifice plate volute of blower 1, motor 3 and electric machine support 4 are formed a whole, and draught fan impeller rotation is driven when motor 3 rotates, and then
So that air-flow enters centrifugal blower from air inlet 6 and vent muffler 5, and discharged by gas outlet 7.
Fig. 2, Fig. 6 be refer to as preferred in the present embodiment, the volute of blower includes：Spiral case body, noise elimination stomata
5th, air inlet 6 and gas outlet 7, the air inlet 6 are to be arranged in the circular cross-section opening of the spiral case body tail section, it is described go out
Gas port 7 is that section is the quadrangular section opening for being opened in the spiral case body head, and the noise elimination stomata 5 is described to be opened in
The aperture openings of diameter are set on the surfaces externally and internally of spiral case body.Specifically, the detailed construction of perforated plate volute of blower 1 such as Fig. 2
It is shown.It is being provided with a large amount of a diameter of 0.8mm-1mm or so vent muffler 5 and circular air inlet 6 and rectangle
Gas outlet 7 forms.
Fig. 1, Fig. 3 be refer to as preferred in the present embodiment, draught fan impeller 2 is made up of two leaflets wheels in the axial direction,
Two leaflet wheel offset angulars are set.In certain embodiments, the draught fan impeller 2 includes：Multigroup blade 8 and blade
The blade 8 is divided to for the component impeller of left and right two by support chip 9, the blade support piece 9, and the length of each leaflet wheel is institute
State the half of draught fan impeller length.Two leaflet wheel offset angulars are set simultaneously.Specifically, the detailed knot of draught fan impeller 2
Structure a number of blade 8 and blade support piece 9 as shown in figure 3, be made up of.Wherein, the length of blade 8 is about the length of impeller 2
Half.Taken turns by 9 groups or so two leaflets of blade support piece.Left and right leaflet takes turns certain angle that staggers.
In certain embodiments, as shown in figure 4, leaflet wheel offset angular is set described in above-mentioned two, above-mentioned left and right leaflet
The centre of wheel is provided with motor shaft mounting hole 10.
In certain embodiments, as shown in figure 5, the structure of motor 3 has motor driving shaft 11 thereon, driven by motor
Axle 11 can drive draught fan impeller 2 to move.
A kind of air cleaning unit, including described centrifugal blower are additionally provided in another embodiment of the application.
In certain embodiments, the centrifugal blower, including：Draught fan impeller 2 and motor 3, the motor 3 drive when rotating
The draught fan impeller 2 is rotated, and the draught fan impeller 2, the motor 3 are arranged in volute of blower 1, the volute of blower 1
For perforated plate spiral case.
In certain embodiments, absorption sound insulation cotton is further comprises in the volute of blower of the centrifugal blower.
In certain embodiments, the centrifugal blower, including：Draught fan impeller 2 and motor 3, the motor 3 drive when rotating
The draught fan impeller 2 is rotated, and the draught fan impeller 2, the motor 3 are arranged in volute of blower 1, the volute of blower 1
For perforated plate spiral case.Perforation on the perforated plate spiral case is vent muffler, and the punching rate of the perforated plate spiral case is little
In 20%.
In certain embodiments, the volute of blower includes：Spiral case body, noise elimination stomata, air inlet and gas outlet, institute
It is the circular cross-section opening for being arranged in the spiral case body tail section to state air inlet, and the gas outlet is that section is to be opened in the snail
The quadrangular section opening of shell body head, the noise elimination stomata are to be opened on the surfaces externally and internally of the spiral case body to set directly
The aperture openings in footpath.
In certain embodiments, the motor is fixed in the volute of blower by electric machine support, the electric machine support
Motor is fixed by motor fixing hole, the electric machine support is fixed on the volute of blower by spiral case mounting hole.
In certain embodiments, the centrifugal blower reduces centrifugation on the basis of not changing blower fan complexity and volume
The noise that blower fan is propagated by gas outlet, while improve the air quantity of centrifugal blower.
In certain embodiments, the centrifugal blower in order to maintain the structural strength of volute of blower and maintain air-flow inside
Air-flow ride comfort, the punching rate of perforated plate can not be more than 20%.
In certain embodiments, the centrifugal blower makes as far as possible more noises be advantageous to reduce gas outlet into mixed wind chamber
Noise, to reduce the noise of whole VMC.
Above-mentioned air cleaning unit includes：Air purifier and/or VMC.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
In general, the various embodiments of the disclosure can be with hardware or special circuit, software, logic or its any combination
Implement.Some aspects can be implemented with hardware, and some other aspect can be with firmware or software implementation, and the firmware or software can
With by controller, microprocessor or other computing devices.Although the various aspects of the disclosure be shown and described as block diagram,
Flow chart is represented using some other drawing, but it is understood that frame described herein, equipment, system, techniques or methods can
With in a non limiting manner with hardware, software, firmware, special circuit or logic, common hardware or controller or other calculating
Equipment or some combinations are implemented.
Although in addition, operation is described with particular order, this is understood not to require this generic operation with shown suitable
Sequence is performed or performed with generic sequence, or requires that all shown operations are performed to realize expected result.In some feelings
Under shape, multitask or parallel processing can be favourable.Similarly, begged for although the details of some specific implementations is superincumbent
By comprising but these are not necessarily to be construed as any restrictions to the scope of the present disclosure, but the description of feature is only pin in
To specific embodiment.Some features described in some embodiments of separation can also be held in combination in single embodiment
OK.Mutually oppose, the various features described in single embodiment can also in various embodiments be implemented separately or to appoint
The mode of what suitable sub-portfolio is implemented.
Claims (10)
- A kind of 1. centrifugal blower, it is characterised in that including：Draught fan impeller and motor, the motor drive the blower fan when rotating Impeller is rotated, and the draught fan impeller, the motor are arranged in volute of blower, and the volute of blower is perforated plate spiral case.
- 2. centrifugal blower according to claim 1, it is characterised in that the perforation on the perforated plate spiral case is ventilated to eliminate the noise Hole.
- 3. centrifugal blower according to claim 1 or 2, it is characterised in that the punching rate of the perforated plate spiral case is not more than 20%.
- 4. centrifugal blower according to claim 1, it is characterised in that the motor is fixed on the wind by electric machine support In machine spiral case,The electric machine support fixes motor by motor fixing hole, and the electric machine support is fixed on the wind by spiral case mounting hole On machine spiral case.
- 5. centrifugal blower according to claim 1, it is characterised in that the volute of blower includes：Spiral case body, gas muffler Hole, air inlet and gas outlet,The air inlet is the circular cross-section opening for being arranged in the spiral case body tail section,The gas outlet is that section is the quadrangular section opening for being opened in the spiral case body head,The noise elimination stomata is to be opened in the aperture openings that diameter is set on the surfaces externally and internally of the spiral case body.
- 6. centrifugal blower according to claim 1, it is characterised in that draught fan impeller is in the axial direction by two points of impeller sets Into two leaflet wheel offset angulars are set.
- 7. the centrifugal blower according to claim 1 or 6, it is characterised in that the draught fan impeller includes：Multigroup blade and The blade is divided into two component impellers of left and right by blade support piece, the blade support piece, and the length of each leaflet wheel is The half of the draught fan impeller length.
- 8. centrifugal blower according to claim 1, it is characterised in that the volute of blower also includes：Absorb sound insulation cotton.
- 9. a kind of air cleaning unit, it is characterised in that including the centrifugal blower as described in claim any one of 1-8.
- 10. air cleaning unit according to claim 9, it is characterised in that the air cleaning unit includes：Purification of air Device and/or VMC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710995888.0A CN107701469A (en) | 2017-10-23 | 2017-10-23 | A kind of centrifugal blower, air cleaning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710995888.0A CN107701469A (en) | 2017-10-23 | 2017-10-23 | A kind of centrifugal blower, air cleaning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107701469A true CN107701469A (en) | 2018-02-16 |
Family
ID=61182041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710995888.0A Pending CN107701469A (en) | 2017-10-23 | 2017-10-23 | A kind of centrifugal blower, air cleaning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107701469A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506230A (en) * | 2018-03-22 | 2018-09-07 | 广州勒夫蔓德电器有限公司 | A kind of wind turbine and air purifier |
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| CN2553150Y (en) * | 2002-06-13 | 2003-05-28 | 中国科学院声学研究所 | Fan volute with noise-reducing function |
| CN2656683Y (en) * | 2003-11-06 | 2004-11-17 | 宁波方太厨具有限公司 | Noise reducing casing for kitchen ventilator |
| CN103362870A (en) * | 2013-07-02 | 2013-10-23 | 西安交通大学 | Sound-absorbing low-noise volute centrifugal fan |
| CN204591781U (en) * | 2014-12-30 | 2015-08-26 | 广东泛仕达机电有限公司 | A kind of impeller and centrifugal blower |
| KR20150120168A (en) * | 2014-04-17 | 2015-10-27 | 한국에너지기술연구원 | Centrifugal type mixed flow blower |
| CN206094336U (en) * | 2016-09-12 | 2017-04-12 | 北京航天爱锐科技有限责任公司 | Air purifier |
| CN208073802U (en) * | 2017-10-23 | 2018-11-09 | 加丁（天津）科技有限公司 | A kind of centrifugal blower, air cleaning unit |
-
2017
- 2017-10-23 CN CN201710995888.0A patent/CN107701469A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2553150Y (en) * | 2002-06-13 | 2003-05-28 | 中国科学院声学研究所 | Fan volute with noise-reducing function |
| CN2656683Y (en) * | 2003-11-06 | 2004-11-17 | 宁波方太厨具有限公司 | Noise reducing casing for kitchen ventilator |
| CN103362870A (en) * | 2013-07-02 | 2013-10-23 | 西安交通大学 | Sound-absorbing low-noise volute centrifugal fan |
| KR20150120168A (en) * | 2014-04-17 | 2015-10-27 | 한국에너지기술연구원 | Centrifugal type mixed flow blower |
| CN204591781U (en) * | 2014-12-30 | 2015-08-26 | 广东泛仕达机电有限公司 | A kind of impeller and centrifugal blower |
| CN206094336U (en) * | 2016-09-12 | 2017-04-12 | 北京航天爱锐科技有限责任公司 | Air purifier |
| CN208073802U (en) * | 2017-10-23 | 2018-11-09 | 加丁（天津）科技有限公司 | A kind of centrifugal blower, air cleaning unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506230A (en) * | 2018-03-22 | 2018-09-07 | 广州勒夫蔓德电器有限公司 | A kind of wind turbine and air purifier |
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