CN105115050B - A kind of air purifier with conical air intake grid - Google Patents
A kind of air purifier with conical air intake grid Download PDFInfo
- Publication number
- CN105115050B CN105115050B CN201510482175.5A CN201510482175A CN105115050B CN 105115050 B CN105115050 B CN 105115050B CN 201510482175 A CN201510482175 A CN 201510482175A CN 105115050 B CN105115050 B CN 105115050B
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- Prior art keywords
- air
- air duct
- frame
- intake grid
- shell
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
-
- 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
-
- 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
- F24F13/28—Arrangement or mounting of filters
Abstract
The invention discloses a kind of air purifiers with conical air intake grid, including：Shell, Double suction type centrifugal wind motor, and filter assemblies, wherein, the Double suction type centrifugal wind motor includes the double-sided impeller for having the air duct frame of certain inner space and being installed in the air duct frame, the filter assemblies are mounted between the Double suction type centrifugal wind motor and the shell, the air duct frame includes air duct siding and is provided with the air duct substrate of air inlet, the air inlet overlying of the air duct substrate has the conical air intake grid being recessed inwardly, the conical surface of the cone air intake grid increases and gradual increased air inlet hole equipped with several radially equidistant annular array distributions and with radius, it is described cone air intake grid cone element and the plane of the air duct substrate between at certain angle of cut α.The present invention, which has, is promoting the air purification efficiency of air purifier meanwhile, it is capable to reduce the advantageous effect of the operation noise of air purifier.
Description
Technical field
The present invention relates to a kind of air purifiers, more particularly, to a kind of air purification with conical air intake grid
Device.
Background technology
Air purifier on the market can be divided into single-suction air purifier and double suction by the difference of air draught mode at present
Formula air purifier, double-suction type air purifier is compared with traditional single-suction air purifier, when having big intake, unit
The ability of the interior more air of purification, air purification efficiency are relatively high.
A kind of filter screen wind area that Chinese Patent Application No. as shown in Figures 1 and 2 is 201410163365.6 is big
Bilateral filtering inlet air air purifier, including motor wind wheel, air duct (30), front housing (40), back cabinet (50) and head cover
(60), the air outlet (30b) that air duct (30) are provided with the cavity (30a) for housing motor wind wheel and are flowed out for air, head cover
(60) air discharge grille (601) being discharged for air after purification is provided on, front housing (40) is spliced to form use with back cabinet (50)
In the space of device motor wind wheel and air duct (30), head cover (60) is fixedly mounted on above front housing (40) and back cabinet (50) simultaneously
Above air duct (30) its air outlet (30b), it is characterised in that：The motor is uniaxial motor (10), and the wind wheel is double
To wind wheel (20), its axis hole is fixedly connected uniaxial motor (10) output shaft with Bidirection air vane (20)；The front housing (40) includes
Front housing ontology (401) and the first filter screen (402), front housing ontology (401) is integrally formed with the first cavity (401a), and first
Preceding main air inlet (401b) is provided in well floor, preceding main air inlet (401b) is nearby provided with preceding auxiliary air inlet opening
(401c), the first filter screen (402) device is in the first cavity (401a)；The back cabinet (50) includes back cabinet ontology
(501) and the second filter screen (502), back cabinet ontology (501) is provided in the second well floor integrally formed with the second cavity
Main air inlet (501b) afterwards, rear main air inlet (501b) are nearby provided with rear auxiliary air inlet opening (501c), the second filter screen (502)
Device is in the second cavity；Described its both sides of air duct (30) both-side opening are located at cavity (30a) and are nearby provided with auxiliary air duct
(30c), auxiliary air duct (30c) its air intake (30c-1) caliber size it is larger and gradually taper up into setting it is another in air duct (30)
The smaller outlet air end (30c-2) of the caliber size of side；The auxiliary air duct (30c) of its both sides of air duct (30) respectively with front housing
The preceding auxiliary air inlet opening (401c) being arranged on ontology (401) and back cabinet ontology (501) is connected to rear auxiliary air inlet opening (501c)；
Preceding main air inlet (401b) and rear main air inlet (501b) are connected to cavity (30a).
Although above-mentioned technical proposal solved by way of both sides air inlet traditional single-suction air purifier intake it is small,
The low problem of purification efficiency, but the bilateral filtering inlet air air purifier there is no consider by the optimization design to air intake grid come
It improves into airspeed, to improve intake, using the air intake grid of plane formula, there is certain limitation.Into wind speed
Rate will directly affect the purification efficiency of air purifier, how to increase in the case where air intake grid projected area is constant intake and
It is urgent problem to be solved in the industry into airspeed.
Invention content
Shortcoming present in view of the above technology, the object of the present invention is to provide a kind of with conical air intake grid
Air purifier optimizes existing air purifier, is further increased by way of improving into airspeed
The air purification efficiency of air purifier.In order to realize these purposes according to the present invention and other advantages, a kind of tool is provided
There is the air purifier of conical air intake grid, including：
Shell, Double suction type centrifugal wind motor and filter assemblies, wherein the Double suction type centrifugal wind motor includes having centainly
The air duct frame of inner space and the double-sided impeller being installed in the air duct frame, the filter assemblies are mounted on the double-suction type
Between centrifugal blower and the shell, the air duct frame includes air duct siding and is provided with the air duct substrate of air inlet, the air duct
The air inlet overlying of substrate has the conical air intake grid being recessed inwardly, the conical surface of the cone air intake grid to be equipped with several edges
Radially equidistant annular array distribution and gradual increased air inlet hole, the cone element of the cone air intake grid with radius increase
The α that forms an angle between the plane of the air duct substrate, angle α meet 7 °≤α≤15 ° of formula.
Preferably, inlet scoop for sucking extraneous air is provided on the shell and for filtered air to be discharged
Air outlet, the Double suction type centrifugal wind motor is set in the shell.
Preferably, the air duct frame includes the air ducts left air duct Kuang Yuyou frame, and the right air duct frame is the left air duct frame
The mirror image of central plane about the web, the air ducts left air duct Kuang Yuyou frame is by being arranged between
Connection frame carry out matching connection, the inlet scoop is symmetrically disposed in the left and right sides of the shell.
Preferably, the double-sided impeller has discoidal web and multiple is equidistantly vertically disposed at the abdomen
The both sides of the edge of plate and the blade being arranged radially relative to rotary shaft, the blade pass through ring at the maximum radius of web
Shape circle is in reinforcement connection.
Preferably, the air duct substrate is equipped with the side plane perpendicular to the air duct substrate and along the side of the side plane
Boundary is used to accommodate the groove body of the filter assemblies made of, and the air inlet communicated with the unilateral inlet scoop of the shell
Mouthful, the air duct siding constitutes unilateral air duct perpendicular to another side plane of the air duct substrate.
Angle is preferably, the filter assemblies include be sequentially overlapped from outside to inside setting for filtering thick dirt particulate matter
Primary filtration network, the high efficiency particulate air for removing dust particale object and the absorption for purifying harmful chemicals gas and peculiar smell
Strainer.
Preferably, the air outlet of the shell is circumscribed with cover assembly, and the cover assembly is included in opened upper end
Lid frame, the outlet grid for covering the lid frame and the funnel shaped flow-guiding mouth in the lid frame, the flow-guiding mouth
It is connected on the outside of the air outlet of the shell.
Compared with prior art, the present invention advantage is：Due to being equipped with Double suction type centrifugal wind motor in the shell, inhale
Air port is symmetrically disposed in the both sides of the shell so that can accomplish while increasing suction air volume smart as far as possible in structure
Letter；Since the double-sided impeller has discoidal web and multiple two sides for being equidistantly vertically disposed at the web
Edge and the blade being arranged radially relative to rotary shaft, the blade are added at the maximum radius of web by annular ring
It is solidly connected so that double-sided impeller can be stablized runs at high speed, and vibration is reduced, to ensure the operation stability of complete machine；By
In being covered with the conical air intake grid for being connected and being recessed inwardly with the left air path on the air inlet of the air duct substrate so that
In the case where air intake grid projected area is equal, the incoming air area of air inlet is further increased, sucking can also be treated in addition
Air plays the role of gathering, water conservancy diversion, accelerates into airspeed；Since the left air duct Kuang Yuyou air duct frames are by being arranged in the two
Between connection frame carry out matching connection so that the mating of the air ducts left air duct Kuang Yuyou frame is more compact.
Part is illustrated to embody by other advantages, target and the feature of the present invention by following, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Description of the drawings
Fig. 1 be Chinese Patent Application No. be 201410163365.6 a kind of bilateral that filter screen wind area is big filter into
The space structure figure of wind air purifier；
Fig. 2 is the space structure exploded view of Fig. 1；
Fig. 3 is the space structure figure of an embodiment of the air purifier with conical air intake grid according to the present invention；
Fig. 4 is that the space structure of an embodiment of the air purifier with conical air intake grid according to the present invention decomposes
Figure；
Fig. 5 is the double-suction type centrifugation in an embodiment of the air purifier with conical air intake grid according to the present invention
The space structure exploded view of wind turbine；
Fig. 6 is the left air duct frame in an embodiment of the air purifier with conical air intake grid according to the present invention
Front view；
Fig. 7 is the left air duct frame in an embodiment of the air purifier with conical air intake grid according to the present invention
Rearview；
Fig. 8 is in Fig. 7 along the sectional view in the directions A-A；
Fig. 9 is bowing for the flow-guiding mouth in an embodiment of the air purifier with conical air intake grid according to the present invention
View；
Figure 10 is in Fig. 9 along the sectional view in the directions B-B；
Figure 11 is in Fig. 9 along the sectional view in the directions C-C；
Figure 12 air is in Double suction type centrifugal wind motor flow path schematic diagram；
Figure 13 is air flow path schematic diagram in integral air duct.
Specific implementation mode
Present invention will be described in further detail below with reference to the accompanying drawings, foregoing end other objects of the invention, feature, side
Face and advantage will be apparent, to enable those skilled in the art that can implement according to this with reference to specification word.
With reference to Fig. 3 and Fig. 4, the air purifier 100 with conical air intake grid includes：Cover assembly 110, shell 120,
Double suction type centrifugal wind motor 130 and base assembly 140.Wherein, cover assembly 110 is included in the lid frame 112 of opened upper end, for covering
The outlet grid 111 of lid lid frame 112, central processing unit 113, the wireless communication module that is electrically connected with central processing unit 113 (are not drawn
Go out), cloud server, the funnel shaped water conservancy diversion in lid frame 112 that wireless telecommunications are connect are established with wireless communication module
Mouth 114 and the control panel (not shown) above lid frame 112 or on side wall.Wherein, central processing unit with it is described
Air quality detector, wireless communication module and Double suction type centrifugal wind motor 130 establish electrical connection；Control panel provides display
The display panel of parameter in air purification process, display panel also includes a variety of buttons, to allow user's input air to purify
Parameter (such as clarification time, pattern), and select the setting of pre-programmed；Shell 120 include procapsid 121, back casing 122,
For suck extraneous air inlet scoop 123,124, the air outlet for air filtering to be discharged, left inlet scoop 123 and right air draught
Mouth 124 is symmetrical arranged, and filter assemblies 125,126 are equipped between the inlet scoop 123,124 of Double suction type centrifugal wind motor 130 and shell.
In one embodiment, left filter assemblies 125 include be sequentially overlapped from outside to inside setting for filtering thick dirt particulate matter
Primary filtration network 125a, the high efficiency particulate air 125b for removing dust particale object and for purifying harmful chemicals gas and peculiar smell
Absorption strainer 125c, right filter assemblies 126 include be sequentially overlapped from outside to inside setting for filter thick dirt particulate matter just
Grade filter screen 126a, the high efficiency particulate air 126b for removing dust particale object and for purifying harmful chemicals gas and peculiar smell
Adsorb strainer 125c.In another embodiment, left installation is equipped between left inlet scoop 123 and Double suction type centrifugal wind motor 130
Frame 127 is correspondingly equipped with right installing frame 128 between right inlet scoop 124 and Double suction type centrifugal wind motor 130.
With reference to Fig. 5, Double suction type centrifugal wind motor 130 includes having the air duct frame of certain inner space and being installed on the air duct
Double-sided impeller 132 in frame.In one embodiment, air duct frame includes left air duct frame 131 and right air duct frame 135, Zuo Feng
Road frame 131 and right air duct frame 135 carry out matching connection by the connection frame 134 being arranged between, double-sided impeller 132 by
The driving operating of driving motor 133.
Referring again to Fig. 5, double-sided impeller 132 have discoidal web and it is multiple be equidistantly vertically disposed at it is described
The both sides of the edge of web and the blade being arranged radially relative to rotary shaft, the blade pass through at the maximum radius of web
Annular ring is in reinforcement connection.In one embodiment, double-sided impeller 132 is separated into lobus sinister wheel 132a and lobus dexter wheel by web
The number of blade of 132b, lobus sinister wheel 132a are 32, and the number of blade of lobus dexter wheel 132b is also 32.
Referring again to Fig. 5, left air duct frame 131 includes left air duct substrate 131a and left air duct siding 131b, left air duct substrate
131a is equipped with made of a side plane of air duct substrate 131a and the boundary surrounding along the side plane for accommodating left mistake
The groove body of component 125 is filtered, and the air inlet communicated with 120 left inlet scoop 123 of shell, left air duct siding 131b is perpendicular to left wind
Another side plane of road substrate 131a is to constitute left air path.Due to the symmetrical junction that right air duct frame 135 is left air duct frame 131
Structure repeats no more the concrete structure of right air duct frame 135 at this.
With reference to Fig. 6~Fig. 8, it is covered on the air inlet of left air duct substrate 131a and is connected with left air path and be recessed inwardly
The conical surface of conical air intake grid, the cone air intake grid is equipped with several radially equidistant annular array distributions and with radius
Increase and gradual increased air inlet hole, wherein the cone element of the setting conical air intake grid is flat with the air duct substrate
Angle between face is α, then meets 7 °≤α≤15 ° of formula.Since right air duct frame 135 is the symmetrical structure of left air duct frame 131,
Concrete structure of right air duct frame 135 is repeated no more at this.
Referring to Fig.1 2 and 13, left air duct frame 131 is harmonious with right air duct frame 135 constitutes integral air duct, and integral air duct, which is equipped with, to be used
In the cavity 134a for accommodating the double-sided impeller 132 and motor and for the outlet air runner 134b of air outflow, outlet air runner
134b is connected with the air outlet of shell 120, and outlet air runner 134b gradually increases in the direction upper section product flowed out along air-flow.
In one embodiment, connection frame 134 is equipped with the deflector 134c that outlet air runner 134b is divided into two.
Referring again to Figure 13, a length of a in bottom of the deflector 134c is set, a length of b in upper bottom edge, a height of h are described whole
The outer diameter of a height of H in body air duct, the double-sided impeller are D, then have a:D=0.6~0.8, h:H=0.2~0.4, as tool
The embodiment of body, a:B=0.6, a:D=0.75, h:H=0.3.
Air quality detector (not shown) is additionally provided on shell 120, the air quality detector include it is following in extremely
It is one few：Formaldehyde detector for detecting Formaldehyde Concentration of Indoor Air；Humidity Detection for detecting indoor air humidity
Device；Sulfur dioxide detector for detecting sulfur dioxide in room air；For detecting concentration of natural gas in room air
Detection of natural gas device；PM2.5 detectors for detecting PM2.5 concentration in room air.In one embodiment, air quality
Detector includes：Formaldehyde detector for detecting Formaldehyde Concentration of Indoor Air；Humidity for detecting indoor air humidity
Detector；PM2.5 detectors for detecting PM2.5 concentration in room air.In another embodiment, Detection of Air Quality
Device is electrically connected with central processing unit 113, monitors indoor air quality in real time by air quality detector to control with circular cone
The closing and operation of the air purifier 100 of shape air intake grid.
In one embodiment, an airflow fence, flow-guiding mouth 114 are additionally provided between the air outlet of shell 120 and flow-guiding mouth 114
It is fixed by fixed frame 115 and the installation of lid frame 112 and air outlet.
With reference to Fig. 9~Figure 11, funnel shaped flow-guiding mouth 114 includes foreboard 114a, back plate 114b, left plate 114c and right panel
114d then has 0 °≤γ≤30 ° if the angle of left plate 114c and vertical direction is γ, if the folder of right panel 114d and vertical direction
Angle is β, then has 0 °≤β≤30 °, if the angle of foreboard 114a and vertical direction is δ, then has 0 °≤δ≤45 °, if back plate with it is perpendicular
Histogram to angle be θ, then have 0 °≤θ≤15 °.In one embodiment, γ=β=30 °, δ=15 °, θ=5 °.
Operation principle：With reference to Fig. 4, Figure 12 and Figure 13, under the action of Double suction type centrifugal wind motor 130, air to be clean
Left inlet scoop 123 and right inlet scoop 124 through the left and right sides of double-suction type centrifugal purifier 100 suck, through left filter assemblies 125 and
After the filtering of right filter assemblies 126, Double suction type centrifugal wind motor 130 is entered by the left and right air intake grid of Double suction type centrifugal wind motor 130
Integral air duct in, under the action of double-sided impeller 132, filtered air is discharged after flowing out distinguished and admirable road 134b, in addition, nothing
The memory real-time exchange data of line communication module and cloud server, cloud server have analyze and provide handling result and
It is recommended that function, and will treated that data are sent on the portable intelligent mobile terminal of user, user passes through intelligent sliding
The connection of dynamic terminal and cloud server to control intelligence there is the air purifier of conical air intake grid to operate, so that with
Family can whenever and wherever possible remote monitoring room air data and control air purifier operating function.
Number of devices and treatment scale described herein are the explanations for simplifying the present invention.To the present invention application,
Modifications and variations will be readily apparent to persons skilled in the art.
As described above, according to the present invention, due to being equipped with Double suction type centrifugal wind motor 130 in shell 120, left inlet scoop 123 with
Right inlet scoop 124 is symmetrically disposed in the both sides of shell 120 so that can accomplish to the greatest extent may be used in structure while increasing suction air volume
Energy is simplified；Since double-sided impeller 130 has discoidal web and multiple is equidistantly vertically disposed at the web
Both sides of the edge and the blade being arranged radially relative to rotary shaft, the blade pass through annular ring at the maximum radius of web
It is in reinforcement connection so that double-sided impeller 132 can be stablized runs at high speed, and vibration is reduced, to ensure the operation of complete machine
Stability；Since left air duct substrate 131a is covered with the circle for being connected with air duct and being recessed inwardly on the air inlet of right air duct substrate
Taper air intake grid so that in the case where air intake grid projected area is equal, further increase the incoming air area of air inlet, in addition
It can also play the role of gathering to air to be sucked, water conservancy diversion, accelerate into airspeed；Due to the left air duct frame 131 and right wind
Road frame logical 135 crosses the connection frame 134 being arranged between and carries out matching connection, so that left air duct frame 131 and right air duct
The mating of frame 135 is more compact；Since connection frame 134 is equipped with the deflector 134c that outlet air runner 134b is divided into two, from
And the air circulation of outlet air runner 134b is made to become orderly, reducing turbulent flow, there is a phenomenon where so that air outflow is more suitable
Sliding, the noise of air outlet is reduced；Due to the funnel shaped flow-guiding mouth 114 in lid frame 112 so that the air of air outlet outflow
Speed is reduced, to further decrease wind noise；Since air quality detector is electrically connected with central processing unit 113,
Central processing unit 113 is established wireless telecommunications with cloud server further through wireless communication module and is connect, wireless communication module and cloud
The memory real-time exchange data of server, cloud server are held to have the function of analyzing and provide handling result and suggestion, and
By treated, data are sent on the portable intelligent mobile terminal of user, and user passes through intelligent mobile terminal and high in the clouds takes
The connection of business device has the air purifier operating of conical air intake grid to control intelligence, enables a user to whenever and wherever possible
Remote monitoring room air data and the function of control air purifier operating.
Although the embodiments of the present invention have been disclosed as above, but it is not limited in listed fortune in specification and embodiments
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily real
Now other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is not limited to
Specific details and legend shown and described herein.
Claims (4)
1. a kind of air purifier with conical air intake grid, which is characterized in that including：Shell, Double suction type centrifugal wind motor, with
And filter assemblies, wherein inlet scoop for sucking extraneous air is provided on the shell and for filtered air to be discharged
Air outlet, the Double suction type centrifugal wind motor is set in the shell, and the Double suction type centrifugal wind motor includes having in certain
The air duct frame in portion space and the double-sided impeller being installed in the air duct frame, the double-sided impeller have discoidal web
With multiple both sides of the edge for being equidistantly vertically disposed at the web and the blade that is arranged radially relative to rotary shaft, institute
Blade is stated to be in reinforcement connection by annular ring at the maximum radius of web, the filter assemblies be mounted on the double-suction type from
Between heart wind turbine and the shell, the air duct frame includes the air ducts left air duct Kuang Yuyou frame, and the right air duct frame is the left wind
Mirror image of the road frame about the central plane of the web, the left air duct Kuang Yuyou air duct frames are by being arranged in the two
Between connection frame carry out matching connection, the inlet scoop is symmetrically disposed in the left and right sides of the shell, the left air duct
Frame includes left air duct siding and is provided with the left air duct substrate of air inlet, and the air inlet overlying of the left air duct substrate is recessed inwardly
Conical air intake grid, the conical surface of the cone air intake grid is equipped with several radially equidistant annular arrays distributions and with half
Diameter increases and gradual increased air inlet hole, between the cone element and the plane of the air duct substrate of the cone air intake grid
Form an angle α, and angle α meets 7 °≤α≤15 ° of formula.
2. the air purifier with conical air intake grid as described in claim 1, which is characterized in that the air duct substrate is set
Have made of the side plane perpendicular to the air duct substrate and the boundary surrounding along the side plane for accommodating the filtering group
The groove body of part, and the air inlet that is communicated with the unilateral inlet scoop of the shell, the air duct siding is perpendicular to the air duct base
Another side plane of plate is to constitute unilateral air duct.
3. the air purifier with conical air intake grid as described in claim 1, which is characterized in that the filter assemblies packet
Include the primary filtration network for filtering thick dirt particulate matter for being sequentially overlapped setting from outside to inside, the height for removing dust particale object
Imitate filter screen and the absorption strainer for purifying harmful chemicals gas and peculiar smell.
4. the air purifier with conical air intake grid as described in claim 1, which is characterized in that the outlet air of the shell
Mouth is circumscribed with cover assembly, the cover assembly be included in the lid frame of opened upper end, the outlet grid for covering the lid frame, with
And the funnel shaped flow-guiding mouth in the lid frame, it is connected on the outside of the flow-guiding mouth and the air outlet of the shell.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510482175.5A CN105115050B (en) | 2015-08-03 | 2015-08-03 | A kind of air purifier with conical air intake grid |
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| CN201510482175.5A CN105115050B (en) | 2015-08-03 | 2015-08-03 | A kind of air purifier with conical air intake grid |
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| CN105115050B true CN105115050B (en) | 2018-10-26 |
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| CN107504581B (en) * | 2017-07-28 | 2019-11-01 | 深圳市康弘环保技术有限公司 | It is a kind of to use TiO2The air cleaning facility of coating |
| CN109084764B (en) * | 2018-07-06 | 2022-04-12 | 中国船舶重工集团公司第七0七研究所 | Air duct design for eliminating equipment course effect in rotation modulation inertial navigation system |
| CN109307327A (en) * | 2018-11-23 | 2019-02-05 | 广州海科电子科技有限公司 | A kind of air purifier |
| CN110141911A (en) * | 2019-06-06 | 2019-08-20 | 绍兴市民诚针纺织品有限公司 | Spinning and weaving workshop dust controlling system |
| CN114198838B (en) * | 2021-12-10 | 2023-02-28 | 浙江亚通新材料股份有限公司 | Local balance ventilation system of soldering paste workshop |
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