CN105115050A - Air purifier with conical air inlet grids - Google Patents
Air purifier with conical air inlet grids Download PDFInfo
- Publication number
- CN105115050A CN105115050A CN201510482175.5A CN201510482175A CN105115050A CN 105115050 A CN105115050 A CN 105115050A CN 201510482175 A CN201510482175 A CN 201510482175A CN 105115050 A CN105115050 A CN 105115050A
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- Prior art keywords
- air
- air channel
- conical
- purifier
- intake grid
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Classifications
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- 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
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses an air purifier with conical air inlet grids. The air purifier comprises a shell, a double-suction type centrifugal fan and a filter assembly. The double-suction type centrifugal fan comprises air channel frames with certain internal space and a double-suction type impeller arranged in the air channel frames, and the filter assembly is mounted between the double-suction type centrifugal fan and the shell. The air channel frames comprise air channel wall plates and air channel base plates with air inlets, and the air inlets of the air channel base plates are covered with the inwards-concave conical air inlet grids. A plurality of air inlet holes which are distributed in the radial direction at equal intervals in an annular array mode and gradually enlarged along with the enlargement of the radius are formed in the conical faces of the conical air inlet grids. A certain intersection angle alpha is formed between the conical face generatrix of the conical air inlet grids and the plane of the air channel base plates. The air purifier has the beneficial effects that the air purification efficiency of the air purifier is improved, and meanwhile the running noise of the air purifier can be lowered.
Description
Technical field
The present invention relates to a kind of air purifier, more specifically, relate to a kind of air purifier with conical air intake grid.
Background technology
Current air purifier on the market can be divided into single-suction air purifier and double-suction type air purifier by the difference of air draught mode, double-suction type air purifier is compared with traditional single-suction air purifier, have the ability that intake is large, purify more air in the unit interval, air purification efficiency is higher.
Chinese Patent Application No. is as shown in Figures 1 and 2 the large bilateral filtering inlet air air purifier of a kind of screen pack wind area of 201410163365.6, comprise motor wind wheel, air channel (30), front housing (40), back cabinet (50) and top cover (60), air channel (30) is provided with for the cavity (30a) of accommodating motor wind wheel and the air outlet (30b) for air outflow, top cover (60) is provided with the air discharge grille (601) of discharging for air after purification, front housing (40) and back cabinet (50) are spliced to form the space for device motor wind wheel and air channel (30), top cover (60) be fixedly mounted on front housing (40) and back cabinet (50) top and be positioned at air channel (30) its air outlet (30b) top, it is characterized in that: described motor is single shaft motor (10), described wind wheel is Bidirection air vane (20), single shaft motor (10) output shaft is fixedly connected with Bidirection air vane (20) its axis hole, described front housing (40) comprises front housing body (401) and the first screen pack (402), front housing body (401) is one-body molded the first cavity (401a), first well floor is provided with front main air inlet (401b), be provided with front auxiliary air inlet mouth (401c) near front main air inlet (401b), the first screen pack (402) device is in the first cavity (401a), described back cabinet (50) comprises back cabinet body (501) and the second screen pack (502), back cabinet body (501) is one-body molded the second cavity, second well floor is provided with rear main air inlet (501b), be provided with rear auxiliary air inlet mouth (501c) near rear main air inlet (501b), the second screen pack (502) device is in the second cavity, its both sides of described air channel (30) both-side opening are positioned near cavity (30a) and are provided with auxiliary air channel (30c), and auxiliary air channel (30c) its air intake (30c-1) caliber size is comparatively large and be shrunk to the less outlet air end (30c-2) of the caliber size that is arranged on air channel (30) opposite side gradually, the auxiliary air channel (30c) of described air channel (30) its both sides is communicated with rear auxiliary air inlet mouth (501c) with the upper front auxiliary air inlet mouth (401c) arranged of front housing body (401) and back cabinet body (501) respectively, front main air inlet (401b) is communicated with cavity (30a) with rear main air inlet (501b).
Although technique scheme solves by the mode of both sides air inlet the problem that traditional single-suction air purifier intake is little, purification efficiency is low, but this bilateral filtering inlet air air purifier is not considered by improving air intake speed to the optimal design of air intake grid, thus raising intake, the air intake grid of what it adopted is plane formula, has certain limitation.Air intake speed will directly affect the purification efficiency of air purifier, and how increasing intake and air intake speed when air intake grid projected area is constant is problem demanding prompt solution in the industry.
Summary of the invention
For the weak point existed in above-mentioned technology, the object of this invention is to provide a kind of air purifier with conical air intake grid, improvement is optimized to existing air purifier, is improved the air purification efficiency of air purifier by the mode improving air intake speed further.In order to realize, according to these objects of the present invention and other advantages, providing a kind of air purifier with conical air intake grid, comprising:
Housing, Double suction type centrifugal wind motor, and filter assemblies, wherein, described Double suction type centrifugal wind motor comprises the air channel frame with certain inner space and the double-sided impeller be installed in the frame of described air channel, described filter assemblies is arranged between described Double suction type centrifugal wind motor and described housing, described air channel frame comprises air channel wallboard and has the air channel substrate of air inlet, the air inlet of described air channel substrate is covered with the conical air intake grid caved inward, the conical surface of described conical air intake grid is provided with several radially equidistant ring array distribution and fresh air inlets increasing with radius and increase gradually, certain angle of cut α is become between the cone element of described conical air intake grid and the plane of described air channel substrate.
Preferably, described housing is provided with the inlet scoop for sucking extraneous air and the air outlet for discharging filtered air, described Double suction type centrifugal wind motor is arranged in described housing.
Preferably, described air channel frame comprises Kuang Yuyou air channel, left air channel frame, described right air channel frame is the mirror image of described left air channel frame about the central plane of described web, Kuang Yuyou air channel, described left air channel frame carries out coupling by the connection box be arranged between the two and connects, and described inlet scoop is arranged on the left and right sides of described housing symmetrically.
Preferably, described double-sided impeller have discoidal web and multiple be equidistantly vertically arranged on described web both sides of the edge and the blade radially arranged relative to rotating shaft, described blade is reinforced the connection by annular ring at the maximum radius place of web.
Preferably, described air channel substrate is provided with the cell body for holding described filter assemblies of the side plane perpendicular to described air channel substrate and the boundary surrounding along this side plane, and the air inlet to communicate with the one-sided inlet scoop of described housing, described air channel wallboard perpendicular to described air channel substrate opposite side plane thus form one-sided air channel.
Preferably, the angle of cut α between the cone element of described conical air intake grid and the plane of described air channel substrate meets formula 7 °≤α≤15 °.
Preferably, described filter assemblies comprise from outside to inside successively superposition arrange for filter thick dirt particle primary filter net, for removing the high efficiency particulate air of dust particale thing and the absorption filter screen for purifying harmful chemicals gas and peculiar smell.
Preferably, the air outlet of described housing is circumscribed with cover assembly, described cover assembly be included in opened upper end cover frame, for the outlet grid that covers described cover frame and the funnel shaped flow-guiding mouth be arranged in described cover frame, described flow-guiding mouth is connected with the outside of the air outlet of described housing.
Compared with prior art, its beneficial effect is in the present invention: owing to being provided with Double suction type centrifugal wind motor in described housing, inlet scoop is arranged on the both sides of described housing symmetrically, makes can accomplish structure is simplified as much as possible while increase suction air volume; Due to described double-sided impeller have discoidal web and multiple be equidistantly vertically arranged on described web both sides of the edge and the blade radially arranged relative to rotating shaft, described blade is reinforced the connection by annular ring at the maximum radius place of web, what make that double-sided impeller can be stable runs up, reduce vibration, thus ensure the operation stability of complete machine; Air inlet due to described air channel substrate is covered with and is connected and the conical air intake grid caved inward with described left air path, make when air intake grid projected area is equal, increase the incoming air area of air inlet further, in addition the air can also treating suction play gather, the effect of water conservancy diversion, accelerate air intake speed; Connect because Kuang Yuyou air channel, described left air channel frame carries out coupling by the connection box be arranged between the two, thus make connecting of Kuang Yuyou air channel, left air channel frame more compact.
Part is embodied by explanation below by other advantages of the present invention, target and feature, part also will by research and practice of the present invention by those skilled in the art is understood.
Accompanying drawing explanation
Fig. 1 to be Chinese Patent Application No. be 201410163365.6 the space structure figure of the large bilateral filtering inlet air air purifier of a kind of screen pack wind area;
Fig. 2 is the space structure exploded view of Fig. 1;
Fig. 3 is according to the space structure figure with an embodiment of the air purifier of conical air intake grid of the present invention;
Fig. 4 is according to the space structure exploded view with an embodiment of the air purifier of conical air intake grid of the present invention;
Fig. 5 is the space structure exploded view according to the Double suction type centrifugal wind motor had in an embodiment of the air purifier of conical air intake grid of the present invention;
Fig. 6 is the front view according to the left air channel frame had in an embodiment of the air purifier of conical air intake grid of the present invention;
Fig. 7 is the rearview according to the left air channel frame had in an embodiment of the air purifier of conical air intake grid of the present invention;
Fig. 8 is the sectional view along A-A direction in Fig. 7;
Fig. 9 is the top view according to the flow-guiding mouth had in an embodiment of the air purifier of conical air intake grid of the present invention;
Figure 10 is the sectional view along B-B direction in Fig. 9;
Figure 11 is the sectional view along C-C direction in Fig. 9;
Figure 12 air is at Double suction type centrifugal wind motor flow path schematic diagram;
Figure 13 is air flow path schematic diagram in integral air duct.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, and aforementioned and other object, feature, aspect and advantage of the present invention will become more obvious, can implement according to this to make those skilled in the art's reference description word.
With reference to Fig. 3 and Fig. 4, the air purifier 100 with conical air intake grid comprises: cover assembly 110, housing 120, Double suction type centrifugal wind motor 130 and base assembly 140.Wherein, cover assembly 110 be included in opened upper end cover frame 112, for covering the outlet grid 111 of cover frame 112, central processing unit 113, the wireless communication module (not shown) be electrically connected with central processing unit 113, setting up the cloud server that wireless telecommunications are connected, the control panel (not shown) being arranged on the funnel shaped flow-guiding mouth 114 in cover frame 112 and being arranged on above cover frame 112 or on sidewall with wireless communication module.Wherein, central processing unit is set up with described air quality detector, wireless communication module and Double suction type centrifugal wind motor 130 and is electrically connected; Control panel provides the display floater of the parameter in display air purification process, and display floater also comprises multiple button, to allow user's input air to purify parameter (such as clarification time, pattern), and selects the setting of pre-programmed; Housing 120 comprise procapsid 121, back casing 122, for suck extraneous air inlet scoop 123,124, for discharging the air outlet of filtered air, left inlet scoop 123 is symmetrical arranged with right inlet scoop 124, is provided with filter assemblies 125,126 between the inlet scoop 123,124 of Double suction type centrifugal wind motor 130 and housing.In one embodiment, left filter assemblies 125 comprise from outside to inside successively superposition arrange for filter thick dirt particle primary filter net 125a, for removing the high efficiency particulate air 125b of dust particale thing and the absorption filter screen 125c for purifying harmful chemicals gas and peculiar smell, right filter assemblies 126 comprise from outside to inside successively superposition arrange for filter thick dirt particle primary filter net 126a, for removing the high efficiency particulate air 126b of dust particale thing and the absorption filter screen 125c for purifying harmful chemicals gas and peculiar smell.In another embodiment, between left inlet scoop 123 and Double suction type centrifugal wind motor 130, be provided with left installing frame 127, correspondingly, between right inlet scoop 124 and Double suction type centrifugal wind motor 130, be provided with right installing frame 128.
With reference to Fig. 5, Double suction type centrifugal wind motor 130 comprises the air channel frame with certain inner space and the double-sided impeller 132 be installed in the frame of described air channel.In one embodiment, air channel frame comprises left air channel frame 131 and right air channel frame 135, and left air channel frame 131 carries out coupling with right air channel frame 135 by the connection box 134 be arranged between the two and is connected, and double-sided impeller 132 drives running by drive motors 133.
Refer again to Fig. 5, double-sided impeller 132 have discoidal web and multiple be equidistantly vertically arranged on described web both sides of the edge and the blade radially arranged relative to rotating shaft, described blade is reinforced the connection by annular ring at the maximum radius place of web.In one embodiment, double-sided impeller 132 is separated into lobus sinister wheel 132a and lobus dexter wheel 132b by web, and the number of blade of lobus sinister wheel 132a is 32, and the number of blade of lobus dexter wheel 132b is also 32.
Referring again to Fig. 5, left air channel frame 131 comprises left air channel substrate 131a and left air channel wallboard 131b, left air channel substrate 131a is provided with the cell body for holding left filter assemblies 125 of the side plane perpendicular to air channel substrate 131a and the boundary surrounding along this side plane, and the air inlet to communicate with the left inlet scoop 123 of housing 120, left air channel wallboard 131b perpendicular to left air channel substrate 131a opposite side plane thus form left air path.Due to the symmetrical structure that right air channel frame 135 is left air channel frame 131, repeat no more at this concrete structure to right air channel frame 135.
With reference to Fig. 6 ~ Fig. 8, the air inlet of left air channel substrate 131a is covered with and is connected and the conical air intake grid caved inward with left air path, the conical surface of described conical air intake grid is provided with several radially equidistant ring array distribution and fresh air inlets increasing with radius and increase gradually, wherein, the angle set between the cone element of described conical air intake grid and the plane of described air channel substrate is α, then meet formula 7 °≤α≤15.Due to the symmetrical structure that right air channel frame 135 is left air channel frame 131, repeat no more at this concrete structure to right air channel frame 135.
With reference to Figure 12 and 13, left air channel frame 131 and right air channel frame 135 are harmonious formation integral air duct, the air-out runner 134b that integral air duct is provided with the cavity 134a for holding described double-sided impeller 132 and motor and flows out for air, air-out runner 134b is connected with the air outlet of housing 120, and air-out runner 134b amasss at the direction upper section flowed out along air-flow and increases gradually.In one embodiment, connection box 134 is provided with the deflector 134c be divided into two by air-out runner 134b.
Referring again to Figure 13, the length of side of going to the bottom setting described deflector 134c is a, and upper bottom side length is b, height is h, the height of described integral air duct is H, and the external diameter of described double-sided impeller is D, then have a:b=0.5 ~ 0., 8a:D=0.6 ~ 0.8, h:H=0.2 ~ 0.4, as concrete embodiment, a:b=0.6, a:D=0.75, h:H=0.3.
Housing 120 is also provided with air quality detector (not shown), this air quality detector comprise following at least one: for detecting the formaldehyde detector of Formaldehyde Concentration of Indoor Air; For detecting the moisture detector of indoor air humidity; For detecting the sulfur dioxide detector of sulfur dioxide in room air; For detecting the detection of natural gas device of concentration of natural gas in room air; For detecting the PM2.5 detector of PM2.5 concentration in room air.In one embodiment, air quality detector comprises: for detecting the formaldehyde detector of Formaldehyde Concentration of Indoor Air; For detecting the moisture detector of indoor air humidity; For detecting the PM2.5 detector of PM2.5 concentration in room air.In another embodiment, air quality detector is electrically connected with central processing unit 113, monitors IAQ in real time to control closedown and the operation of the air purifier 100 with conical air intake grid by air quality detector.
In one embodiment, be also provided with an airflow fence between the air outlet of housing 120 and flow-guiding mouth 114, flow-guiding mouth 114 is installed fixing by fixed frame 115 and cover frame 112 and air outlet.
With reference to Fig. 9 ~ Figure 11, funnel shaped flow-guiding mouth 114 comprises header board 114a, rear plate 114b, left plate 114c and right panel 114d, if the angle of left plate 114c and vertical direction is γ, then there are 0 °≤γ≤30 °, if the angle of right panel 114d and vertical direction is β, then have 0 °≤β≤30 °, if the angle of header board 114a and vertical direction is δ, then there are 0 °≤δ≤45 °, if the angle of rear plate and vertical direction is 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 effect of Double suction type centrifugal wind motor 130, air to be clean sucks through the left inlet scoop 123 of double-suction type centrifugal purifier 100 left and right sides and right inlet scoop 124, after the filtration of left filter assemblies 125 and right filter assemblies 126, enter in the integral air duct of Double suction type centrifugal wind motor 130 by the left and right air intake grid of Double suction type centrifugal wind motor 130, under the effect of double-sided impeller 132, the air after filtering is discharged after flowing out distinguished and admirable road 134b, in addition, the memory real-time exchange data of wireless communication module and cloud server, cloud server has the function analyzed and provide result and suggestion, and on the intelligent mobile terminal sending to user to carry with the data after process, user controls by the connection of intelligent mobile terminal and cloud server the air purifier that intelligence has a conical air intake grid and operates, thus make user can whenever and wherever possible remote monitoring room air data and control air purifier running function.
Here the number of devices illustrated and treatment scale are used to simplify explanation of the present invention.Application of the present invention, modifications and variations be will be readily apparent to persons skilled in the art.
As mentioned above, according to the present invention, owing to being provided with Double suction type centrifugal wind motor 130 in housing 120, left inlet scoop 123 and right inlet scoop 124 are arranged on the both sides of housing 120 symmetrically, make can accomplish structure is simplified as much as possible while increase suction air volume, due to double-sided impeller 130 have discoidal web and multiple be equidistantly vertically arranged on described web both sides of the edge and the blade radially arranged relative to rotating shaft, described blade is reinforced the connection by annular ring at the maximum radius place of web, what make that double-sided impeller 132 can be stable runs up, reduce vibration, thus ensure the operation stability of complete machine, because left air channel substrate 131a is connected and the conical air intake grid caved inward with air channel with the air inlet of right air channel substrate is covered with, make when air intake grid projected area is equal, increase the incoming air area of air inlet further, in addition the air can also treating suction play gather, the effect of water conservancy diversion, accelerate air intake speed, cross the connection boxes 134 be arranged between the two and carry out coupling because described left air channel frame 131 and right air channel frame lead to 135 and be connected, thus make connecting of left air channel frame 131 and right air channel frame 135 more compact, because connection box 134 is provided with the deflector 134c be divided into two by air-out runner 134b, thus make the air circulation of air-out runner 134b become orderly, reduce the phenomenon that turbulent flow occurs, to such an extent as to air flows out more smooth, the noise of air outlet is reduced, due to the funnel shaped flow-guiding mouth 114 in cover frame 112, the air velocity that air outlet is flowed out is reduced, thus reduces wind noise further, because air quality detector is electrically connected with central processing unit 113, central processing unit 113 is set up wireless telecommunications by wireless communication module and cloud server again and is connected, the memory real-time exchange data of wireless communication module and cloud server, cloud server has the function analyzed and provide result and suggestion, and on the intelligent mobile terminal sending to user to carry with the data after process, user controls by the connection of intelligent mobile terminal and cloud server the air purifier that intelligence has a conical air intake grid and operates, thus make user can whenever and wherever possible remote monitoring room air data and control air purifier running function.
Although embodiment of the present invention are open as above, but it is not limited in listed in description and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (8)
1. one kind has the air purifier of conical air intake grid, it is characterized in that, comprise: housing, Double suction type centrifugal wind motor, and filter assemblies, wherein, described Double suction type centrifugal wind motor comprises the air channel frame with certain inner space and the double-sided impeller be installed in the frame of described air channel, described filter assemblies is arranged between described Double suction type centrifugal wind motor and described housing, described air channel frame comprises air channel wallboard and has the air channel substrate of air inlet, the air inlet of described air channel substrate is covered with the conical air intake grid caved inward, the conical surface of described conical air intake grid is provided with several radially equidistant ring array distribution and fresh air inlets increasing with radius and increase gradually, certain angle of cut α is become between the cone element of described conical air intake grid and the plane of described air channel substrate.
2. there is the air purifier of conical air intake grid as claimed in claim 1, it is characterized in that, described housing is provided with the inlet scoop for sucking extraneous air and the air outlet for discharging filtered air, described Double suction type centrifugal wind motor is arranged in described housing.
3. there is the air purifier of conical air intake grid as claimed in claim 2, it is characterized in that, described air channel frame comprises Kuang Yuyou air channel, left air channel frame, described right air channel frame is the mirror image of described left air channel frame about the central plane of described web, Kuang Yuyou air channel, described left air channel frame carries out coupling by the connection box be arranged between the two and connects, and described inlet scoop is arranged on the left and right sides of described housing symmetrically.
4. there is the air purifier of conical air intake grid as claimed in claim 3, it is characterized in that, described double-sided impeller have discoidal web and multiple be equidistantly vertically arranged on described web both sides of the edge and the blade radially arranged relative to rotating shaft, described blade is reinforced the connection by annular ring at the maximum radius place of web.
5. there is the air purifier of conical air intake grid as claimed in claim 4, it is characterized in that, described air channel substrate is provided with the cell body for holding described filter assemblies of the side plane perpendicular to described air channel substrate and the boundary surrounding along this side plane, and the air inlet to communicate with the one-sided inlet scoop of described housing, described air channel wallboard perpendicular to described air channel substrate opposite side plane thus form one-sided air channel.
6. have the air purifier of conical air intake grid as claimed in claim 1, it is characterized in that, the angle of cut α between the cone element of described conical air intake grid and the plane of described air channel substrate meets formula 7 °≤α≤15 °.
7. there is the air purifier of conical air intake grid as claimed in claim 1, it is characterized in that, described filter assemblies comprise from outside to inside successively superposition arrange for filter thick dirt particle primary filter net, for removing the high efficiency particulate air of dust particale thing and the absorption filter screen for purifying harmful chemicals gas and peculiar smell.
8. there is the air purifier of conical air intake grid as claimed in claim 1, it is characterized in that, the air outlet of described housing is circumscribed with cover assembly, described cover assembly be included in opened upper end cover frame, for the outlet grid that covers described cover frame and the funnel shaped flow-guiding mouth be arranged in described cover frame, described flow-guiding mouth is connected with the outside of the air outlet of described housing.
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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 CN105115050B (en) | 2018-10-26 |
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| CN106438445A (en) * | 2016-11-30 | 2017-02-22 | 长石河谷电器（重庆）有限公司 | High-performance air purifier and double-air-inlet centrifugal fan device |
| CN107504581A (en) * | 2017-07-28 | 2017-12-22 | 贵州眯果创意科技有限公司 | One kind uses TiO2The air cleaning facility of coating |
| CN109084764A (en) * | 2018-07-06 | 2018-12-25 | 中国船舶重工集团公司第七0七研究所 | For eliminating the Duct design of 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 |
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