CN209752416U - air purification filter screen and air purification device - Google Patents
air purification filter screen and air purification device Download PDFInfo
- Publication number
- CN209752416U CN209752416U CN201822103194.4U CN201822103194U CN209752416U CN 209752416 U CN209752416 U CN 209752416U CN 201822103194 U CN201822103194 U CN 201822103194U CN 209752416 U CN209752416 U CN 209752416U
- Authority
- CN
- China
- Prior art keywords
- layer
- air
- formaldehyde
- air purification
- filter screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The utility model provides an air purification filter screen and air purification device who has it, the air purification filter screen includes the particulate matter filter layer that stacks up each other, purifies VOCs layer and purifies the formaldehyde layer, it sets up to purify the VOCs layer the particulate matter filter layer with purify between the formaldehyde layer, it includes the non-woven fabrics substrate that comprises the cellosilk and supports and be in to purify the formaldehyde layer active manganese granule on the non-woven fabrics, the particulate matter filter layer outside is the air inflow district, it is the air outflow district to purify the formaldehyde layer outside.
Description
Technical Field
The utility model relates to an filtration and purification field especially relate to an air purification filter screen and air purification device.
Background
With the rapid development of modern industry and the improvement of the living standard of people, the decoration of house living rooms is increased day by day, and the problem of indoor formaldehyde pollution caused by decoration is more and more prominent. At present, formaldehyde purification filter screens in the market mainly comprise a filter screen filled with activated carbon particles, a filter screen sandwiched with carbon cloth and a photocatalyst filter screen.
The filter screen filled with the active carbon particles utilizes an adsorption purification technology, and mostly adopts columnar active carbon particles to adsorb harmful gases such as formaldehyde, but has the defects of low purification efficiency, large resistance, fast adsorption saturation, easy desorption and the like.
The carbon cloth filter screen is prepared by spraying activated carbon fine particles between two layers of high-efficiency filter materials (HEPA) and then performing processes such as folding and glue injection, but has the defects of large resistance, poor formaldehyde adsorption, easy desorption, secondary pollution and the like.
The photocatalyst filter screen adopts a photocatalysis technology, adopts nano titanium dioxide as a catalyst, has the problems of incomplete formaldehyde decomposition, low purification efficiency, harsh use conditions, complex structure and the like, and can generate ozone pollution and easily cause secondary damage to a human body when being used under the irradiation of an ultraviolet lamp.
Therefore, the air purification filter screen has the advantages of high purification efficiency, low resistance, simple structure, easy processing and convenient practical application, and has great practical value for economically and effectively removing formaldehyde pollution in indoor air.
SUMMERY OF THE UTILITY MODEL
Accordingly, there is a need for an air purifying filter and an air purifying device.
The invention provides an air purification filter screen which comprises a particulate matter filter layer, a VOCs purification layer and a formaldehyde purification layer which are mutually laminated, wherein the VOCs purification layer is arranged between the particulate matter filter layer and the formaldehyde purification layer, the formaldehyde purification layer comprises a non-woven fabric base material formed by fiber yarns and active manganese particles loaded on the non-woven fabric, an air inflow area is arranged outside the particulate matter filter layer, and an air outflow area is arranged outside the formaldehyde purification layer.
In one embodiment, the porosity of the non-woven fabric substrate is 70-99%, and the median particle diameter D of the active manganese particles50Is 50 nm-1000 nm.
In one embodiment, the diameter of the fiber filaments in the non-woven fabric substrate is 1-100 μm, the aperture of the non-woven fabric substrate is 10-2000 μm, and the thickness of the non-woven fabric substrate is 0.1-5 mm.
In one embodiment, the loading amount of the active manganese on the non-woven fabric substrate per unit area is 10g/m2～200g/m2。
In one embodiment, the particulate filtration layer has a filtration rating selected from one of F7, F8, F9, H10, and H11.
In one embodiment, the purification VOCs layer is a porous layer composed of a plurality of active material particles, the particle size of the active material particles is 30-100 meshes, and the loading amount of the active material in the air purification filter screen per unit area is 50g/m2～200g/m2。
In one embodiment, the active substance particles are selected from one or more of activated carbon, silica, diatomaceous earth, zeolite, and alumina.
In one embodiment, the active manganese particles are selected from one or more of birnessite, cryptomelane, pyrolusite, barium-magnesiate, and birnessite.
In one embodiment, the active manganese particles have a specific surface area of 10m2/g～200m2/g。
In one embodiment, the particle filtering layer, the VOCs purifying layer and the formaldehyde purifying layer which are stacked on one another are of a V-shaped or U-shaped folded structure as a whole.
The invention also provides an air purification device, which comprises the air purification filter screen and a fan, wherein the fan enables airflow to pass through the filter screen from an air inflow area outside the particulate matter filter layer and then enter an air outflow area outside the formaldehyde purification layer.
The utility model provides an air purification filter screen, structural design is reasonable, and the resistance is little, purification efficiency is high, just can high-efficiently decompose the formaldehyde in the air at room temperature to can thoroughly decompose formaldehyde into carbon dioxide and water, not produce secondary pollutant, simple structure, easily processing production, but wide application in air purification field, like air purification devices such as air purifier, house air conditioner, vehicle air conditioner or new fan.
Drawings
Fig. 1 is a schematic structural view of an air purification filter screen according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of a formaldehyde-purifying layer in the air-purifying filter screen of the present invention;
FIG. 3 is a diagram showing a comparison of wind resistance between an air purification filter screen and a commercially available carbon cloth sandwiched filter screen according to an embodiment of the present invention;
FIG. 4 is a graph showing the decomposition effect of the air purification filter screen of the embodiment of the present invention on high concentration formaldehyde and the change of carbon dioxide generated during the decomposition of formaldehyde with time under a static test condition;
FIG. 5 is a graph showing the natural attenuation and total attenuation of formaldehyde pollutants as a function of time when formaldehyde is purified by using the air purification filter screen of the embodiment of the present invention;
Figure 6 is utilizing the utility model discloses when air purification filter screen purifies formaldehyde, the linear fitting curve of formaldehyde pollutant natural attenuation and total decay.
The device comprises a particulate filtering layer 10, a VOCs purifying layer 20, a formaldehyde purifying layer 30, a non-woven fabric base material 32 and active manganese particles 34.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail by the following embodiments in combination with the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
referring to fig. 1 and 2, an embodiment of the present invention provides an air purification filter screen, including a particulate matter filter layer 10, a purification VOCs layer 20 and a purification formaldehyde layer 30 which are stacked on each other, the purification VOCs layer 20 is disposed between the particulate matter filter layer 10 and the purification formaldehyde layer 30, the purification formaldehyde layer 30 includes a non-woven fabric substrate 32 formed by fiber filaments and active manganese particles 34 supported on the non-woven fabric substrate 32, an air inflow region is located outside the particulate matter filter layer 10, and an air outflow region is located outside the purification formaldehyde layer 30.
The utility model provides an air purification filter screen, structural design is reasonable, adopts the particulate matter filter layer, purifies VOCs layer and purifies formaldehyde layer three layer construction can more efficient degradation formaldehyde, and purification efficiency is high and the resistance is little. The utility model discloses an air purification filter screen just can high-efficiently decompose the formaldehyde in the air at room temperature to can thoroughly decompose formaldehyde into carbon dioxide and water, not produce secondary pollutant, simple structure, easily processing production, but wide application in the air purification field.
The particulate filtering layer 10 is a porous layer made of fiber filtering materials and is used for intercepting the particulate matters such as hair and dust and protecting the pores of the formaldehyde purifying layer 30 from being blocked. The fiber-based filter material may include at least one of glass fibers, polyester fibers, polypropylene fibers, polyvinylidene fluoride fibers, and polytetrafluoroethylene fibers.
In order to reduce the resistance of the air cleaning screen, the filtration grade of the particulate filter layer 10 may be selected from one of F7, F8, F9, H10, and H11. The resistance is also lower for filter materials with relatively low filter grades.
The purified VOCs layer 20 is a porous layer composed of a plurality of active material particles, and the active material particles can absorb VOCs gas, prevent the VOCs gas from polluting the active manganese particles 34, and protect the activity of the active manganese particles 34 in the purified formaldehyde layer 30, as shown in fig. 1.
The active substance particles are selected from one or more of activated carbon, silica, diatomite, zeolite and alumina.
The particle size of the active substance particles is preferably 30-100 meshes, and the loading amount of the active substance in the air purification filter screen per unit area is 50g/m2～200g/m2. The particle size and the amount of the supported particles within this range do not increase the resistance of the air cleaning filter.
The non-woven fabric substrate 32 of the formaldehyde-purifying layer 30 is a porous substrate with a rough surface formed by intertwining fiber filaments. The fiber yarn can comprise one of polyester fiber, polypropylene fiber, polyamide fiber, spandex fiber and acrylic fiber. The cellosilk is processed into the non-woven fabrics with non-woven technology, and the non-woven fabrics has the characteristics that the fiber bulk density is little, easily circulation of air and the advantage that the resistance is little, can reduce air purification filter screen's resistance.
Preferably, the porosity of the non-woven fabric base material 32 is 70% -99%, the median particle size D50 of the active manganese particles 34 is 50-1000 nm, and the porosity of the non-woven fabric and the particle size of the active manganese are matched with each other to realize the advantages of small filter screen resistance and high purification efficiency.
Preferably, the diameter of the fiber filaments in the nonwoven fabric substrate 32 is preferably 1 μm to 100 μm, the pore diameter of the nonwoven fabric substrate 32 is preferably 10 μm to 2000 μm, and the thickness is preferably 0.1mm to 5 mm. Within this range, the non-woven fabric base material 32 can firmly attach the active manganese particles 34, while further reducing the resistance.
In one embodiment, the active manganese particles 34 are attached to the filaments of the nonwoven fabric substrate, and since the active manganese particles are smaller, the filaments have larger diameters and larger porosities, most of the active manganese particles 34 can be attached to the surface of a single filament instead of filling the pores of the nonwoven fabric substrate, so that the pore size and porosity of the nonwoven fabric substrate are not affected, and thus the pore size and porosity of the formaldehyde-purifying layer are substantially the same as those of the nonwoven fabric substrate.
The active manganese particles 34 may be granular, the median diameter D50 of the active manganese particles 34 is preferably 50nm to 1000nm, and the loading amount of the active manganese particles 34 on the non-woven fabric substrate 32 is preferably 10g/m2～200g/m2. Too large particle diameter or too high load capacity easily block up the non-woven fabrics substrate 32 cellosilk and the hole between the cellosilk, reduce the porosity and the specific surface area of non-woven fabrics substrate, cause the resistance of air purification filter screen increases. In the range, the particle size and the loading capacity of the active manganese can enable most of the active manganese to be loaded on the fiber filaments of the non-woven fabric substrate, the wind resistance of the air purification filter screen cannot be influenced, and the formaldehyde can be effectively catalytically degraded by a formaldehyde purification layer.
Preferably, the specific surface area of the active manganese particles 34 is 10m2/g～200m2(ii) in terms of/g. Within the range, the active manganese particles 34 have large specific surface area and are easier to adsorb formaldehyde in the air, so that the formaldehyde purification and decomposition efficiency is improved.
Preferably, the active manganese particles 34 have a porous structure, and the active site exposure rate of the active manganese is higher, and the formaldehyde purification and decomposition efficiency is higher.
The active manganese particles 34 may include one or more of birnessite, cryptomelane, pyrolusite, barium-magnesiate, and manganite. Preferably, the active manganese is birnessite. Mn is used as manganese in birnessite3+、Mn4+The valence state exists, the average valence state of the manganese is higher, the oxidation degree is higher, the manganese is easy to be combined with other ions, and the manganese has stronger catalytic activity.
Preferably, the particulate filtering layer 10, the purified VOCs layer 20, and the purified formaldehyde layer 30 are all V-shaped or U-shaped folded structures. The V-shaped or U-shaped folding structure is beneficial to increasing the expansion area of the filter screen and improving the efficiency of purifying and decomposing formaldehyde by the active manganese.
In one embodiment, the air purification filter screen is in a barrel shape, a plate shape or an arch bridge shape, and can be applied to an air purifier filter element, a household air conditioner filter element, an automobile air conditioner filter element or a fresh air machine filter element.
The embodiment of the invention also provides an air purification device, which comprises the air purification filter screen and a fan, wherein the fan enables airflow to pass through the filter screen from an air inflow area outside the particulate matter filter layer and then enter an air outflow area outside the formaldehyde purification layer. The air purification device can be an air purifier, a household air conditioner, an automobile air conditioner or a fresh air machine.
Examples
The utility model provides an air purification filter screen, includes particulate matter filter layer 10, purifies VOCs layer 20 and purifies formaldehyde layer 30, particulate matter filter layer 10 is the porous layer that comprises fibre class filtering material, it includes the non-woven fabrics substrate that comprises the cellosilk and supports and be in to purify formaldehyde layer 30 active manganese on the non-woven fabrics, it is the porous layer that comprises a plurality of active material granule to purify VOCs layer 20, it presss from both sides in to purify VOCs layer 20 particulate matter filter layer 10 with in the middle of purifying formaldehyde layer 30. The outside of the particulate filtering layer 10 is an air inflow region, and the outside of the formaldehyde purifying layer 30 is an air outflow region.
In the air purification filter screen, the diameter of the fiber filaments in the non-woven fabric base material 32 is 60-70 mu m, the thickness of the non-woven fabric base material 32 is 0.8mm, the porosity of the non-woven fabric base material 32 is 90%, and the specific surface area of the active manganese particles 34 is 70m2(ii)/g, particle size D50 is 200 nm. The screens were cut to size 4cm by 6 cm.
Comparative example
A commercially available clamped carbon cloth screen (philips, AC4167) of the same size as the examples.
Experimental example 1 wind resistance comparison
The wind resistance of the example screens and the commercial carbon cloth sandwiched screens was compared using a TSI8130 automated filter material tester. The resistance of the filter screen was measured at a wind speed of 5.3cm/s using 3 sheets of each of the filter screen of example 1 and a commercially available carbon cloth sandwiched filter screen material. The test results are shown in fig. 3, where the screen material of example 1 has a wind resistance of 10Pa, which is much lower than that of the commercially available carbon cloth sandwiched screen material.
Experimental example 2 decomposition Performance of high concentration Formaldehyde
About 3. mu.l of a 37% formaldehyde solution was injected into a 1.5L plexiglass container at room temperature to reach an equilibrium concentration of 190ppm formaldehyde, and the filter mesh of the example was placed in the plexiglass container to examine the reduction in formaldehyde and the amount of carbon dioxide produced. The results of the tests are shown in fig. 4, and static experiments show that the filter screens of the examples can rapidly decompose formaldehyde, the formaldehyde concentration rapidly decreases from 190ppm to 30ppm in a short time, and carbon dioxide production is detected in the plexiglass container.
Experimental example 3 purification Performance for Formaldehyde contamination
The filter screens of the examples were mounted in air cleaners adapted thereto, and the air cleaners were tested by placing them in a test chamber having a temperature of 25 ℃, a humidity of 50% and a volume of 30m3, according to the clean air amount test method for formaldehyde pollutants in GB/T18801-2015 "air cleaners". TestingA formaldehyde generating device is arranged in the cabin, when the initial formaldehyde concentration in the cabin to be tested is stabilized at 1 +/-0.2 mg/m3, the natural attenuation and the total attenuation of the formaldehyde in the cabin to be tested are detected by using a phenol reagent spectrophotometry, and a natural attenuation constant kn and a total attenuation constant ke are obtained by using linear curve fitting. The experimental results are shown in FIGS. 5 and 6, and the air purifier can be used for 30m within 15min3the concentration in the test chamber is 1mg/m3The formaldehyde removal rate is 95%, and the clean air volume (CADR) of the formaldehyde pollutant is up to 400m3The value is calculated according to the formula Q60 (kn-ke) V, where V is the volume of the test chamber in m3Namely 30; kn is the natural attenuation constant of the natural attenuation curve fitting, and is 0.0021 in min-1Ke is the total attenuation constant of the total attenuation curve fit, 0.2264 in min-1。
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides an air purification filter screen, its characterized in that includes the particulate matter filter layer that stacks up each other, purifies VOCs layer and purifies the formaldehyde layer, it sets up to purify the VOCs layer the particulate matter filter layer with purify between the formaldehyde layer, it includes the non-woven fabrics substrate that constitutes by the cellosilk and supports and be in to purify the formaldehyde layer active manganese granule on the non-woven fabrics, the particulate matter filter layer outside is the air inflow district, it is the air outflow district to purify the formaldehyde layer outside.
2. The air purification filter screen of claim 1, wherein the porosity of the non-woven fabric substrate is 70% to 99%, and the median diameter D of the active manganese particles is50Is 50 nm-1000 nm.
3. The air purification filter screen according to claim 1, wherein the diameter of the fiber filaments in the nonwoven fabric substrate is 1 μm to 100 μm, the pore size of the nonwoven fabric substrate is 10 μm to 2000 μm, and the thickness is 0.1mm to 5 mm.
4. The air purification filter screen of claim 1, wherein the loading amount of the active manganese per unit area of the nonwoven fabric substrate is 10g/m2～200g/m2。
5. The air purifying screen of claim 1 wherein the particulate filter layer has a filtration rating selected from one of F7, F8, F9, H10, H11.
6. The air purification screen of claim 1, wherein the layer of purification VOCs is a porous layer comprising a plurality of active material particles, the active material particles have a particle size of 30-100 mesh, and the active material loading per unit area of the air purification screen is 50g/m2～200g/m2The active substance particles are selected from one or more of activated carbon, silica, diatomite, zeolite and alumina.
7. The air purification filter screen of claim 1, wherein the active manganese particles are selected from one or more of birnessite, cryptomelane, pyrolusite, brewsterite, and birnessite.
8. The air purifying screen of claim 1, wherein the active manganeseThe specific surface area of the particles was 10m2/g～200m2/g。
9. The air purification filter screen of claim 1, wherein the particulate filter layer, the VOCs purification layer and the formaldehyde purification layer stacked on each other are of a V-shaped or U-shaped folded structure as a whole.
10. An air cleaning device, comprising the air cleaning screen according to any one of claims 1 to 9, and a blower for causing an air flow from an air inflow region outside the particulate filter layer through the screen into an air outflow region outside the formaldehyde-cleaning layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822103194.4U CN209752416U (en) | 2018-12-14 | 2018-12-14 | air purification filter screen and air purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822103194.4U CN209752416U (en) | 2018-12-14 | 2018-12-14 | air purification filter screen and air purification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209752416U true CN209752416U (en) | 2019-12-10 |
Family
ID=68746617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822103194.4U Active CN209752416U (en) | 2018-12-14 | 2018-12-14 | air purification filter screen and air purification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209752416U (en) |
-
2018
- 2018-12-14 CN CN201822103194.4U patent/CN209752416U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPWO2003066193A1 (en) | Fluid cleaning filter and filter device | |
| CN205295805U (en) | Compound air purification filter paper and use its filter core | |
| CN203829824U (en) | Air purification filter element | |
| CN201036630Y (en) | Photocatalysis air purifier | |
| CN207815524U (en) | A kind of air purifier having except ozone function | |
| CN204816222U (en) | Air purification filter screen | |
| CN205613284U (en) | Carbon fiber room air purifier | |
| CN105126471A (en) | Air filter for air purifier | |
| CN205073798U (en) | A air filter for air purifier | |
| JP2007260603A (en) | Filter unit for air cleaner | |
| CN105817087A (en) | Composite type air purification filter element with multilayered structure | |
| CN106861288A (en) | A kind of compound air purification filtration and compound air purification filter core | |
| CN105817139A (en) | Carbon-fiber indoor air purifier and preparation method thereof | |
| JP2002177717A (en) | Dust removing and deodorizing filter | |
| KR20200024993A (en) | Window multy filter | |
| JP2011233381A (en) | Filter unit for fuel battery | |
| CN206935022U (en) | A kind of VMC indoor air-purification device | |
| JP6076077B2 (en) | air filter | |
| CN209752416U (en) | air purification filter screen and air purification device | |
| CN218269485U (en) | Air purifier filter cloth for removing formaldehyde | |
| JPH0474505A (en) | Air cleaning filter element | |
| CN206037250U (en) | Ultraviolet ray purifies static adsorption and filtration net | |
| CN205481376U (en) | Air purifier of office | |
| CN212790140U (en) | Air conditioner filter element and air conditioner filter | |
| CN204962959U (en) | Air cleaning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |