CN104014204A - Efficient and mute air purifier - Google Patents
Efficient and mute air purifier Download PDFInfo
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- CN104014204A CN104014204A CN201410273113.9A CN201410273113A CN104014204A CN 104014204 A CN104014204 A CN 104014204A CN 201410273113 A CN201410273113 A CN 201410273113A CN 104014204 A CN104014204 A CN 104014204A
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Abstract
The invention discloses an efficient and mute air purifier. The efficient and mute air purifier comprises a main body shell, a top shell, a bottom shell, and a central splitter plate, a side wind guide plate, a second filtration screen, a gas state filtration screen, a fan box, a honeycomb rectification plate and a first filtration screen which are sequentially connected into the main body shell from top to bottom, wherein the top shell is connected to the top of the main body shell; the bottom shell is connected to the bottom of the main body shell; the second filtration screen, the gas state filtration screen, the fan box, the honeycomb rectification plate and the first filtration screen form an integrated air tight structure; the central splitter plate is fixedly connected to the inner wall of the top shell; the central splitter plate and the side wind guide plate which is connected to the inner side wall of the main body shell form a wind outlet channel with a V-shaped section, so that vertical airflow is guided to form parallel airflow which is discharged in a shunt manner. The air purifier adopts a vertical structure from top to bottom as an overall structure, so that the overall air purifier is small in occupied area and compact in structure; due to the structure design of multiple wind guiding, rectifying and noise reducing, noise can be effectively reduced, and meanwhile, the high wind quantity and high filtration efficiency can be maintained.
Description
Technical field
The present invention relates to a kind of air purifier, relate in particular to a kind of efficient quiet air purifier.
Background technology
Along with industrialized development, environmental pollution is more and more serious, and especially air pollution is controlled on a large scale to pollute and is mainly manifested in haze and the photochemical fog etc. that air-borne dust and particle cause more; Excessively industrialization makes more people be faced with more air pollution, too many dust, fine particle, outside contamination source our activity space of erosion pollution and room air.
The needs that purify in order to adapt to modern house environment or office space air ambient, air purifier arises at the historic moment, and it can filter the air of pollution, brings clean pure and fresh air environment to optimize our live and work space.
Air purifier refers to and can adsorb, decomposes or transform various airborne pollutants, effectively improves the product of indoor air clean degree; Having at present outstanding representational air purifier is passive type air purifier, this class air purifier is mainly made up of systems such as motor, fan, airstrainers, its operation principle is: the motor in machine and fan flow indoor air circulation, the air polluting passes through after the airstrainer in machine, various pollutants to be removed or absorption, the air purifier of certain model also can, at the anion generator that installs additional of air outlet, reach better clean-up effect.But also there is some shortcoming in current air purifier, for example mostly adopt the structural design of side air inlet/outlet, make overall machine structure length larger, be unfavorable for laying, also affect purification efficiency; In addition, adopt blower fan at a high speed to make air purifier operation noise larger, impact is used.
In order to reduce the operation noise of air purifier, some air cleaner uses the axial flow blower of low speed or the forward centrifugal blower fan of low speed.But because use the blower fan of the low blast of low speed to cause purification efficiency to reduce, in the time of actual design, need the first screen pack of more supporting very low windage due to most air cleaner.But the first screen pack can only filter some thick particles, the PM0.3 to harm maximum or following particle filtering effect are little.
Because internal structure design makes Air Flow slow or flow to not science, this class air purifier tiny deleterious particle that inside own has been adsorbed onto in having accumulated a large amount of dusts and filter process after long-term use, itself also becomes pollution sources; These are all the weak points of the air cleaner existence of market major part.
Summary of the invention
The object of this invention is to provide a kind of efficient quiet air purifier, it has the high and low noise of filter efficiency and compact conformation science and advantage firmly.
The present invention is achieved like this, it comprises body shell and is connected to top casing and the end casing of body shell top and bottom, it is characterized in that, it also comprises the central flow distribution plate, side wind deflector, the second screen pack, gaseous state screen pack, air box, honeycomb cowling panel and the first screen pack that are connected in turn from the top down in body shell; Described the second screen pack, gaseous state screen pack, air box, honeycomb cowling panel and the first screen pack form an overall airtight construction;
Described central flow distribution plate is fixedly connected on the casing inner wall of top, and described central flow distribution plate forms an air-out channel that cross section is V font with the side wind deflector that is connected to body shell madial wall, becomes parallel airflow shunting to discharge vertical air flow guiding; Described central flow distribution plate and side wind deflector are made up of EPP material, except EPP material, meet the other materials of above-mentioned condition as EPU, have the glass cotton of complex protection face, have the material of micro hole structure as diatom plate etc.
Casing of the described end is provided with several air intake vents, between the inwall of air intake vent and body shell inwall, is provided with drain pan sound panel; Described air intake vent is the shapes such as circle, ellipse, square or rectangle., the quantity of air intake vent is 1 to 6.
Described air box is positioned at body shell middle part, and centrifugal blower is fixed in air box by fan fixed mount; The top of described air box is provided with air box air-out catch net, and the air box wind deflector that is positioned at air box air-out catch net below is fixedly connected on fan fixed mount madial wall.
Preferred structure is: described the second screen pack and the first screen pack are fixed by the second screen pack locking mechanism and the first screen pack locking mechanism that are positioned at body shell madial wall respectively.
Preferred structure is: the periphery between described the second screen pack and gaseous state screen pack and between gaseous state screen pack and air box air-out catch net is equipped with gastight adhesive limit, and it compresses by the second screen pack locking mechanism.
Preferred structure is: between described centrifugal blower and fan fixed mount, be provided with anti-vibration assembly.
Preferred structure is: the air inlet of described air box is horn-like, the area of section of the minimum diameter of the air inlet of air box (3) be described air intake vent (18) the gross area 0.7-1.7 doubly.
Preferred structure is: described honeycomb cowling panel is fixed by the honeycomb cowling panel fixed head that is connected to body shell sidewall, and described honeycomb cowling panel fixed head is between honeycomb cowling panel and the first screen pack, and honeycomb cowling panel fixed head cross section is periphery arc; Between described honeycomb cowling panel fixed head and the first screen pack, periphery is also provided with gastight adhesive limit, and gastight adhesive limit is by the first screen pack locking mechanism pressing.Described honeycomb cowling panel also appendix has cold catalyst or photocatalyst.
Preferred structure is: described air box wind deflector is that EPP material is made, and also can use the material that other sound-absorption coefficients are high, meets the other materials of above-mentioned condition as EPU, has the glass cotton of complex protection face, and the material that has a micro hole structure is as diatom plate etc.; It can effectively reduce the noise being produced by distinguished and admirable shock air box 3; Such structure can reduce the acoustic emanation of making an uproar and propagate into the noise source also centrifugal blower 4 being produced after body shell 2 and minimize.
Beneficial effect of the present invention is: the present invention adopts longitudinal frame from the top down aspect overall structure, makes whole air purifier floor space less, compact conformation; To break through conventional air clearing machine be to reduce noise to adopt the structural design of low filtering efficiency in the present invention in addition, by the structural design of multiple wind-guiding, rectification and noise abatement, make centrifugal blower high-speed cruising ensure in the situation of purification efficiency that level of noise obtains showing and reduce.Adopt multi-filtering net to purify air, make the dust of different-grain diameter or particle to complete filtering to gradient, improved quality and the effect of air cleaning; It can effectively solve PM0.1 or above deleterious particle and household gaseous contamination.The outstanding advantage of the present invention is can also keep high air quantity and filtration efficiency in effective noise reduction.
Brief description of the drawings
Fig. 1 is invention internal structure cutaway view.
Fig. 2 is shape assumption diagram of the present invention.
Fig. 3 is the best structure chart of implementing of air-out channel of the V font of the present invention's central authorities' flow distribution plate and side wind deflector formation.
Fig. 4 is the present invention air flow direction figure while working.
Fig. 5 is the present invention and sample experiment correlation curve figure.
End casing 2, body shell 3, air box 4, centrifugal blower 5, fan fixed mount 6, air box wind deflector 7, honeycomb cowling panel 8, the first screen pack 9, drain pan sound panel 10, gaseous state screen pack 11, the second screen pack 12, gastight adhesive limit 13, side wind deflector 14, central flow distribution plate 15, top casing 16, air outlet 17, honeycomb cowling panel fixed head 18, air intake vent 19, the first screen pack locking mechanism 20, the second screen pack locking mechanism 21, air box air-out catch net 22, anti-vibration assembly in the drawings, 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
As depicted in figs. 1 and 2, the present invention is achieved like this, it comprises body shell 2 and is connected to top casing 15 and the end casing 1 of body shell 2 tops and bottom, its design feature is that it also comprises the central flow distribution plate 14, side wind deflector 13, the second screen pack 11, gaseous state screen pack 10, air box 3, honeycomb cowling panel 7 and the first screen pack 8 that are connected in turn from the top down in body shell 2; Described the second screen pack 11, gaseous state screen pack 10, air box 3, honeycomb cowling panel 7 and the first screen pack 8 form an overall airtight construction.The continuity of above-mentioned airtight construction is passed through air-flow in order from bottom to top successively, prevents the current dislocation of gas filtration.The first screen pack 8 and described the second screen pack 11 are respectively as primary efficient filter screen and high efficiency particulate air, wherein the first screen pack 8 completes the preliminary filtration of air, the larger suspension of particle in main filtered air, the second screen pack 11 completes the senior filtration of air, the less human body inhalable particles of particle diameter in main filtered air.
In implementation process, described body shell 2 is to change height according to the size of internal part, and it makes overall housing construction alterable height.Like this dismounting or install time more for convenience, also make body that the air cleaning unit of any mode is set easily.
Described central flow distribution plate 14 is fixedly connected on top casing 15 inwalls, and described central flow distribution plate 14 forms with the side wind deflector 13 that is connected to body shell 2 madial walls the air-out channel that a cross section is V font, becomes parallel airflow shunting to discharge vertical air flow guiding; Described central flow distribution plate 14 and side wind deflector 13 are made up of EPP material, can be also EPU, have the cotton and material that has a micro hole structure of the glass of complex protection face as diatom plate etc.The modular design of the shunting of one noise abatement was set before top outlet inlet 16 positions of air cleaner, air is through after the second screen pack 11, flow and approached laminar condition, but still the noise that exists blower fan to produce, for exempting from remaining noise shadow to Shi Nei Huan Base-on-environment, the air having purified is directed to the central part of air cleaner under side wind deflector 13 effect of the second screen pack 11 both sides, upper end, and then uses the air-out channel of the V font that central flow distribution plate 14 and side wind deflector 13 form the air smoothness having purified to be diverted to the air outlet 16 of air cleaner.Central authorities flow distribution plate 14 and side wind deflector 13 all use the material that sound-absorption coefficient is high (EPP material, EPU, have the cotton and material that has a micro hole structure of the glass of complex protection face as diatom plate etc.), and air-flow noise after shunting is reduced.
In total, central flow distribution plate 14 forms with side wind deflector 13 the particularly key of air-out channel that a cross section is V font, and Fig. 3 illustrates respectively the best enforcement size range of central flow distribution plate 14 and side wind deflector 13; Wherein,
D1 is the distance of side wind deflector 13 bottoms and the second screen pack 8, is implemented between 5-50mm;
D2 is the distance of central flow distribution plate 14 bottoms and the second screen pack 8, is implemented between 5-60mm;
D3 is the minimum distance of side wind deflector 13 and central flow distribution plate 14, is implemented between 20-80mm;
A1 be side wind deflector 13 in the wind-guiding angle of outlet air surface, be implemented between-30 °-+30 °;
A2 be central flow distribution plate 14 in the wind-guiding angle of outlet air surface, be implemented between 0-30 °;
A3 is central authorities' shunting angle of central flow distribution plate 14, is implemented between 10-90 °;
R1 be side wind deflector 13 in the arc curvature of corner end, be implemented between R3mm – R25mm;
R2 is the arc curvature that the central authorities of central flow distribution plate 14 divide stream interface to pick out wind wind-guiding face, is implemented between R20mm – R120mm;
R3 is that distinguished and admirable arc curvature is concentrated in the storage of side wind deflector 13 bottoms, is implemented between R30mm – R150mm.
These are only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model description and accompanying drawing content to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present utility model.
Casing of the described end 1 is provided with several air intake vents 18, between the inwall of air intake vent 18 and body shell 2 inwalls, is provided with drain pan sound panel 9; This makes him can be applicable to some and have the occasion of special requirement, as ventilated or the positive overvoltage of indoor needs or as the purifier of pure air; In the time of the air cleaning application of ventilation or positive overpressure means, can adopt a conduit to be connected to this equipment air intake vent 18, after the multiple purifying of air by this air cleaner, be pushed to indoor to reach purification, overvoltage and ventilation effect.Described air intake vent 18 is the shapes such as circle, ellipse, square or rectangle, and the quantity of air intake vent 18 is 1 to 6; The air intake vent 18 of rule is beneficial to pipeline and connects, and air intake vent 18 is multiple, is beneficial to effective guiding air and enters from multiple air intake vents 18, avoids too fast the brought noise of traditional single air intake vent wind speed; And avoid being blazed abroad by air intake vent diffusion from the noise of centrifugal blower 4 by drain pan sound panel 9; The air inlet of described air box 3 is horn-like, the area of section of the minimum diameter of the air inlet of air box 3 be described air intake vent 18 the gross area 0.7-1.7 doubly; The air-admitting surface of the gross area of this air intake vent 18 and centrifugal blower 4 is set, air intake vent 18 makes air concentrate air intake, this improves air intake wind speed, at high wind speed but do not produce the in the situation that of breathing heavily stream, can significantly reduce the noise that the fan blade of centrifugal blower 4 produces in the time rotating and be spread apart by the bottom of end casing 1.This designs in the situation that not producing large windage, significantly reduces the noise of air intake vent 18.
Described air box 3 is positioned at body shell 2 middle parts, and centrifugal blower 4 is fixed in air box 3 by fan fixed mount 5; The top of described air box is provided with air box air-out catch net 21, and the air box wind deflector 6 that is positioned at air box air-out catch net 21 belows is fixedly connected on fan fixed mount 5 madial walls.
Described the second screen pack 11 and the first screen pack 8 are fixed by the second screen pack locking mechanism 20 and the first screen pack locking mechanism 19 that are positioned at body shell 2 madial walls respectively.
Periphery between described the second screen pack 11 and gaseous state screen pack 10 and between gaseous state screen pack 10 and air box air-out catch net 21 is equipped with gastight adhesive limit 12, and it compresses by the second screen pack locking mechanism 20.Form an airtight construction by gastight adhesive limit 12.Can effectively prevent that air body from not leaving body via screen pack.Can effectively ensure like this high efficiency filter effect and prevent the tweeting sound that air produces through meticulous narrow space at a high speed.
Between described centrifugal blower 4 and fan fixed mount 5, be provided with anti-vibration assembly 22.Vibration when this makes centrifugal blower 4 reduce blower fan rotation without directly contacting with fan fixed mount 5 is passed to body shell 2 and is caused vibrating noise through physics mode.
Described honeycomb cowling panel 7 is fixed by the honeycomb cowling panel fixed head 17 that is connected to body shell 2 sidewalls, described honeycomb cowling panel fixed head 17 is between honeycomb cowling panel 7 and the first screen pack 8, described honeycomb cowling panel 7 can use the pore wind deflector of honeycomb hole offset plate, honeycomb hole aluminium sheet, honeycomb hole cardboard or other non-honeycomb shape, thickness is between 5mm to 50mm, and bore dia is between 1mm to 12mm.And honeycomb cowling panel fixed head 17 cross-sectional perimeter are arc; Honeycomb cowling panel 7 effectively guiding is entered air box 3 by preliminary filtered air, and honeycomb cowling panel 7 can reduce the disorderly turbulent flow that enters air box 3 air inlets, effectively reduces the noise producing from air inlet.Between described honeycomb cowling panel fixed head 17 and the first screen pack 8, periphery is also provided with gastight adhesive limit 12, and gastight adhesive limit 12 is by the first screen pack locking mechanism 19 pressings.Described honeycomb cowling panel 7 is gone back appendix cold catalyst or photocatalyst, to strengthen the usefulness to air cleaning.
Described air box wind deflector 6 is made up of EPP material, also can use the material that other sound-absorption coefficients are high, and it can effectively reduce the noise being produced by distinguished and admirable shock air box 3; Such structure can reduce the acoustic emanation of making an uproar and propagate into the noise source also centrifugal blower 4 being produced after body shell 2 and minimize.
As shown in Figure 4, operation principle of the present invention is such, air is entered by air intake vent 18, first by the first screen pack 8, complete the preliminary filtration to air by the first screen pack 8, enter air box 3 through honeycomb cowling panel 7 from bottom to top, under the effect of high-speed centrifugal fan 4, air, fast successively by gaseous state screen pack 10 and the second screen pack 11, finally forms with side wind deflector 13 the air-out channel that a cross section is V font by central flow distribution plate 14 and discharges; In whole process, air-flow from air intake, to blower fan pressurization and air-out successively by drain pan sound panel 9, honeycomb cowling panel 7, air box wind deflector 6, central flow distribution plate 14 and side wind deflector 13 rectifying noise-reductions; The gas of discharging from air outlet 16 is like this through repeatedly purifying, and efficiency and the effect of purification are all improved, and compared with traditional clearing machine, the present invention's reducing noise in the time that equal conditions moves is showing very much.
It is below measured result of the present invention.Contrast model machine except wind-guiding+rectification+noise-reducing structure of the present invention, other structure, machine Sales material, blower fan and filter screen are all identical.The about acoustic pressure 30dBA of environmental noise when actual measurement, the present invention and model machine are successively to survey under state at full speed, and acoustic pressure instrument is placed in apart from 1 meter of of model machine fuselage and measures.
Measured result, lists in table 1 and Fig. 5 in detail;
Can be found out by table 1 and Fig. 5, the present invention is good the noise reduction spy of medium and low frequency, in the frequency noise reduction capability the highest (reaching 7-13dBA) of 150Hz-400Hz; And this frequency makes us bothering just and the noise of the very difficult blower fan generation reducing.High frequency more than 10K Hz, overall frequency all has certain amplitude to decline, and uses after the present invention, and overall sound pressure level drops to 56dBA by 64dBA.
Because the present invention Nuisance use the structure of large windage, so after noise reduction effectively significantly, wind flow changes slight, so the effective noise reduction of the present invention but can not increase use cost.The present invention does not need significantly to increase the length of product in addition, but increases denoising structure in the space of product self necessity.Compact structure, makes the present invention can not increase and take up room. and this is particularly important to the high city housing of room rate.And, air cleaner of the present invention, air is filtration, purification from bottom to top, the air after purification is just in time at people's height of sitting of standing, the air that makes most effectively user's direct feeling purify; Table 1
| Frequency Hz | Model machine sound pressure level dBA | Sound pressure level dBA of the present invention | Sound pressure level dBA difference in change |
| 50 | 41 | 41 | 0 |
| 100 | 49 | 46 | -3 |
| 150 | 63 | 50 | -13 |
| 200 | 59 | 48 | -11 |
| 300 | 61 | 54 | -7 |
| 400 | 61 | 50 | -11 |
| 500 | 51 | 48 | -3 |
| 750 | 53 | 49 | -4 |
| 1000 | 57 | 53 | -4 |
| 1500 | 54 | 50 | -4 |
| 2000 | 49 | 45 | -4 |
| 3500 | 48 | 41 | -7 |
| 5000 | 39 | 37 | -2 |
| 7500 | 32 | 29 | -3 |
| 10000 | 25 | 26 | 1 |
| 15000 | 27 | 28 | 1 |
| 20000 | 28 | 28 | 0 |
| Frequently total | 64 | 56 | -8 |
Claims (10)
1. an efficient quiet air purifier, it comprises body shell (2) and is connected to top casing (15) and the end casing (1) of body shell (2) top and bottom, it is characterized in that, it also comprises the central flow distribution plate (14), side wind deflector (13), the second screen pack (11), gaseous state screen pack (10), air box (3), honeycomb cowling panel (7) and the first screen pack (8) that are connected in turn from the top down in body shell; Described the second screen pack (11), gaseous state screen pack (10), air box (3), honeycomb cowling panel (7) and the first screen pack (8) form an overall airtight construction;
Described central flow distribution plate (14) is fixedly connected on top casing (15) inwall, described central flow distribution plate (14) forms an air-out channel that cross section is V font with the side wind deflector (13) that is connected to body shell (2) madial wall, becomes parallel airflow shunting to discharge vertical air flow guiding;
Casing of the described end (1) is provided with several air intake vents (18), between the inwall of air intake vent (18) and body shell (2) inwall, is provided with drain pan sound panel (9);
Described air box (3) is positioned at body shell (2) middle part, and centrifugal blower (4) is fixed in air box (3) by fan fixed mount (5); The top of described air box is provided with air box air-out catch net (21), and the air box wind deflector (6) that is positioned at air box air-out catch net (21) below is fixedly connected on fan fixed mount (5) madial wall.
2. efficient quiet air purifier as claimed in claim 1, it is characterized in that, described the second screen pack (11) and the first screen pack (8) are fixed by the second screen pack locking mechanism (20) and the first screen pack locking mechanism (19) that are positioned at body shell (2) madial wall respectively.
3. efficient quiet air purifier as claimed in claim 1; it is characterized in that; periphery between described the second screen pack (11) and gaseous state screen pack (10) and between gaseous state screen pack (10) and air box air-out catch net (21) is equipped with gastight adhesive limit (12), and it compresses by the second screen pack locking mechanism (20).
4. efficient quiet air purifier as claimed in claim 1, is characterized in that, between described centrifugal blower (4) and fan fixed mount (5), is provided with anti-vibration assembly (22).
5. efficient quiet air purifier as claimed in claim 1, it is characterized in that, the air inlet of described air box (3) is horn-like, the area of section of the minimum diameter of the air inlet of air box (3) be described air intake vent (18) the gross area 0.7-1.7 doubly.
6. efficient quiet air purifier as claimed in claim 1, it is characterized in that, described honeycomb cowling panel (7) is fixed by the honeycomb cowling panel fixed head (17) that is connected to body shell (2) sidewall, described honeycomb cowling panel fixed head (17) is positioned between honeycomb cowling panel (7) and the first screen pack (8), described honeycomb cowling panel (7) is by honeycomb hole offset plate, honeycomb hole aluminium sheet, the pore wind deflector of honeycomb hole cardboard or other non-honeycomb shape is made, the thickness of described honeycomb cowling panel (7) is between 5mm to 50mm, bore dia is between 1mm to 12mm, and described honeycomb cowling panel fixed head (17) cross-sectional perimeter is arc, between described honeycomb cowling panel fixed head (17) and the first screen pack (8), periphery is also provided with gastight adhesive limit (12), and gastight adhesive limit (12) are by the first screen pack locking mechanism (19) pressing.
7. efficient quiet air purifier as claimed in claim 1, it is characterized in that, described central flow distribution plate (14) and side wind deflector (13) are made by having certain sound-absorption coefficient material high and mechanical strength, described in to have certain sound-absorption coefficient material high and mechanical strength be EPP material.
8. the efficient quiet air purifier as described in claim 1 or 5, is characterized in that, described air intake vent (18) is the shapes such as circle, ellipse, square or rectangle., the quantity of air intake vent (18) is 1 to 6.
9. efficient quiet air purifier as claimed in claim 1, is characterized in that, described air box wind deflector (6) is made up of the material with certain sound-absorption coefficient, described in there is certain sound-absorption coefficient material be EPP material.
10. the efficient quiet air purifier as described in claim 1 or 6, is characterized in that, described honeycomb cowling panel (7) is gone back appendix cold catalyst or photocatalyst.
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| CN201410273113.9A CN104014204A (en) | 2014-06-18 | 2014-06-18 | Efficient and mute air purifier |
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| CN105833637A (en) * | 2016-05-05 | 2016-08-10 | 亿丰洁净科技江苏股份有限公司 | Air filter |
| CN106287993A (en) * | 2016-10-24 | 2017-01-04 | 北京小米移动软件有限公司 | Air purifier and air channel structure thereof |
| CN107126778A (en) * | 2017-06-29 | 2017-09-05 | 广东新氧器净化科技有限公司 | A kind of new smog air cleaning unit |
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| CN105833637A (en) * | 2016-05-05 | 2016-08-10 | 亿丰洁净科技江苏股份有限公司 | Air filter |
| CN106287993A (en) * | 2016-10-24 | 2017-01-04 | 北京小米移动软件有限公司 | Air purifier and air channel structure thereof |
| CN106287993B (en) * | 2016-10-24 | 2021-01-26 | 北京小米移动软件有限公司 | Air purifier and air duct structure thereof |
| CN107842936A (en) * | 2017-04-03 | 2018-03-27 | 曾筱瑚 | Efficient Jing Yin air purifier |
| CN107126778A (en) * | 2017-06-29 | 2017-09-05 | 广东新氧器净化科技有限公司 | A kind of new smog air cleaning unit |
| CN107655089A (en) * | 2017-08-14 | 2018-02-02 | 北京爱空气科技有限公司 | A kind of air cleaning unit |
| CN109353485A (en) * | 2018-10-16 | 2019-02-19 | 上海交通大学 | Air purifier for pressurized cabin of ship and its vibration and noise reducing optimization method |
| CN109520044A (en) * | 2018-12-19 | 2019-03-26 | 馨科环保科技（上海）有限公司 | A kind of sqouynd absorption lowering noise set composite of air purifier |
| WO2021078688A1 (en) | 2019-10-21 | 2021-04-29 | Blueair Ab | Air purifier |
| USD973858S1 (en) | 2020-05-27 | 2022-12-27 | Blueair Ab | Air purifier |
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