CN111380122A

CN111380122A - Air purifying device

Info

Publication number: CN111380122A
Application number: CN201811644931.XA
Authority: CN
Inventors: 陶冶; 于洪
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-07-07

Abstract

The invention provides an air purification device, which comprises a shell, a plurality of filter screens and a filter screen frame, wherein the filter screens are arranged on the shell; the shell comprises a top wall, a side wall and a bottom wall, and the top wall, the side wall and the bottom wall form a cavity; the plurality of filter screens comprise a first filter screen, a second filter screen and a third filter screen; the first filter screen comprises a first screen plate and active potassium permanganate borne by the first screen plate; the second filter screen comprises a second screen plate and activated alumina loaded by the second screen plate; the third filter screen comprises a third screen plate and a 13X molecular sieve carried by the third screen plate; the strainer holder is arranged in be used for bearing in the cavity a plurality of filter screens, a plurality of filter screens set up in parallel each other in the strainer holder.

Description

Air purifying device

Technical Field

The invention belongs to the field of air purification, and particularly relates to an air purification device.

Background

At present, raw materials containing total volatile organic compounds such as formaldehyde, ammonia, benzene, toluene, xylene, and the like are widely used in the fields of decoration, furniture manufacturing, adhesive manufacturing, textile manufacturing, automobile manufacturing, and the like. These volatile toxic gaseous pollutants are recognized by the world health organization as toxic substances that cause sustained harm to the human body, with the major harm being manifested by irritation and damage to the human respiratory system, nervous system, and to the skin mucosa. Wherein, the formaldehyde has higher reactivity and can perform nucleophilic addition reaction with molecules with hydroxyl, sulfydryl and amino groups to prevent human bodiesThe synthesis of nuclear proteins in the cell, inhibit cell division and the synthesis of the nucleus and cytoplasm. When toxic gases such as formaldehyde reach a certain concentration indoors, people feel uncomfortable, and the concentration is more than 0.08mg/m³The formaldehyde concentration can cause symptoms such as redness, itching of the eyes, discomfort or pain in the throat, hoarseness, sneezing, chest distress, asthma, dermatitis, etc. The long-term exposure to toxic gas can induce the serious diseases of human body such as leukemia, cancer, etc.

The main solutions at present are the following:

1. physical ventilation method

The physical ventilation method discharges harmful gas to the outdoor through the flowing of air, which is a simple formaldehyde treatment method, and has the defects that the release period of toxic gas such as formaldehyde is long, generally three to fifteen years, but the idling of a new house and a new vehicle is obviously unrealistic for more than three years. The long-term purification efficiency of the ventilation method in the space is not satisfactory.

2. Chemical catalytic reactions, e.g. formaldehyde scavengers or formaldehyde lyases

Formaldehyde scavengers "remove" formaldehyde by chemical reaction, which essentially reduces the toxicity of the target substance or converts it into a non-toxic substance. Formaldehyde, which may be oxidized to formic acid or reduced to methanol, is less toxic and less irritating than formaldehyde, but its toxicity is still present. For example, a strong oxidizing formaldehyde scavenger can oxidize formaldehyde, but it itself is easily decomposed, and spraying on wood boards can not only damage wood, but also lose its effectiveness within hours. The high-concentration scavenger is sprayed in the air, new pollution hazards are generated to the environment, other oxidants and reducing agents cannot effectively scavenge formaldehyde, and similar new pollution is introduced. For wallpaper, the furniture surface can cause irreversible discoloration and paint surface damage.

3. Physical absorption or adsorption

The use of activated carbon for adsorbing formaldehyde in the initial stage of formaldehyde release is indeed effective because the pores of activated carbon have an adsorption potential which is formed by the attraction of carbon molecules and adsorbed molecules, and the smaller the pore diameter, the stronger the adsorption potential of activated carbon. However, both conventional activated carbon and modified activated carbon have limited adsorption capacity due to their excessive porosity. After the adsorption is saturated in a short time, the subsequent effect cannot be achieved.

In addition, since the release of formaldehyde is closely related to the temperature and the humidity of the room, the moisture in the air increases and the release amount of formaldehyde greatly increases. The experimental result shows that the relative temperature in the air is increased by 10%, and the indoor formaldehyde emission is increased by about 5%. The active carbon is used for adsorbing formaldehyde, once the temperature and the humidity are improved, the molecular motion is accelerated, and the formaldehyde begins to be released, so that the space is polluted again.

In the related technology, Maya blue is used for removing formaldehyde, and is actually an adsorbent taking rare earth as a raw material, wherein the rare earth is a strategic material in China, is strictly exported at present, and is a necessary raw material for manufacturing various high-tech products. However, since the raw materials are expensive, they are controlled materials and cannot be widely used.

4. Photocatalyst

The photocatalyst is a high-quality formaldehyde removal product, and in fact, the photocatalyst needs ultraviolet light to play a role, and the ultraviolet light cannot exist in a room all the time, and particularly, the ultraviolet light cannot be seen in places with the most serious formaldehyde release, such as drawers, cabinets, the backs of cabinets and the like. This limits the action of the photocatalyst.

5. Plant absorption of formaldehyde

Plants are able to ingest part of the harmful substances through photosynthesis, but the action of such methods is extremely limited. In practice, plants have very limited uptake of harmful substances. The national standard requires that the release value of formaldehyde is lower than 0.08 mg/cubic meter, most of houses which are just finished with the house are not lower than 0.2 mg/cubic meter, and the scindapsus aureus with higher formaldehyde absorption efficiency absorbs only 20 micrograms of formaldehyde per hour. For a room with 100 square meters, 3 meters high and 0.2 mg/cubic meter formaldehyde value, 1800 tubs of scindapsus aureus are needed, and almost the whole room space needs to be filled to reduce the formaldehyde to 0.08mg, which is also carried out under the condition of sufficient light in the daytime and the formaldehyde in the decorated furniture is continuously released virtually all the time. Therefore, the plants can only play an auxiliary treatment role on harmful substances such as formaldehyde, benzene and the like.

At present, the purifying efficiency of the common air purifying means to the total volatile organic compounds in the air, especially to the formaldehyde, still needs to be improved.

Disclosure of Invention

Based on this, it is necessary to provide an air purification apparatus with high efficiency.

An air purification device comprises a shell, a plurality of filter screens and a filter screen frame;

the shell comprises a top wall, a side wall and a bottom wall, and the top wall, the side wall and the bottom wall form a cavity;

the plurality of filter screens comprise a first filter screen, a second filter screen and a third filter screen;

the first filter screen comprises a first screen plate and active potassium permanganate borne by the first screen plate;

the second filter screen comprises a second screen plate and activated alumina loaded by the second screen plate;

the third filter screen comprises a third screen plate and a 13X molecular sieve carried by the third screen plate;

the strainer holder is arranged in be used for bearing in the cavity a plurality of filter screens, a plurality of filter screens set up in parallel each other in the strainer holder.

In one embodiment, the number of the first mesh plates is two, and the active potassium permanganate is clamped between the two first mesh plates;

the number of the second mesh plates is two, and the activated alumina is clamped between the two second mesh plates;

the number of the third screen plates is two, and the 13X molecular sieve is clamped between the two third screen plates.

In one embodiment, one or more of the active potassium permanganate, the active alumina, and the 13X molecular sieve are spherical or granular.

In one embodiment, one or more of the active potassium permanganate, the active alumina, and the 13X molecular sieve have a particle size of 2mm to 5 mm.

In one embodiment, the air purification device satisfies the following conditions:

gaps among the spherical or granular active potassium permanganate account for 10% -20% of the area of the first mesh plate;

gaps among the spherical or granular activated alumina accounts for 10 to 20 percent of the area of the second mesh plate;

gaps among the spherical or granular 13X molecular sieves account for 10-20% of the area of the third screen plate;

in one embodiment, the active potassium permanganate comprises aluminum oxide and potassium permanganate, the mass ratio of the aluminum oxide in the active potassium permanganate is 75-96%, and the mass ratio of the potassium permanganate in the active potassium permanganate is 4-25%.

In one embodiment, at least one of the plurality of screens has a fan-fold shape in cross-section.

In one embodiment, at least one of the plurality of sieves is a sieve group, the sieve group comprises a plurality of sub-grade sieves parallel to each other, and the distance between the sub-grade sieves is 0.5cm to 1 cm.

In one embodiment, the mass ratio of the active potassium permanganate to the aluminum oxide is 1:1 to 2:1, and the mass ratio of the active potassium permanganate to the 13X molecular sieve is 1:1 to 2: 1.

In one embodiment, the filter further comprises an air inlet and an air outlet, the first filter screen, the second filter screen and the third filter screen are sequentially arranged, the first filter screen is close to the air inlet, and the third filter screen is close to the air outlet.

In one embodiment, the air purifier further comprises a fan, the fan is located in the cavity and close to the air outlet, and the axial direction of the fan is parallel to the axial direction of the air purifying device.

In one embodiment, the filter screen further comprises a small-particle-size anion generator, and the small-particle-size anion generator is arranged on one side, away from the second filter screen, of the third filter screen.

In one embodiment, the filter further comprises a foam filter screen, the pore size of the foam filter screen is 10PPI to 60PPI, and the foam filter screen is located on one side of the first filter screen close to the bottom wall and is arranged in parallel with the first filter screen.

In one embodiment, the filter further comprises a HEPA filter, and the HAPE filter is disposed between the foam filter and the first filter and parallel to the first filter.

In one embodiment, one or more of the plurality of screens has an area of 200mm × 200mm to 1000mm × 1000 mm.

In one embodiment, one or more of the plurality of screens has a thickness of 8mm to 100 mm.

According to the air purification device, the air is purified by using the three filter screens respectively comprising the active potassium permanganate, the active aluminum oxide and the 13X molecular sieve, formaldehyde is rapidly decomposed into carbon dioxide and water at room temperature, and other harmful substances in the air are absorbed, so that the polluted gas in the air is efficiently purified.

Drawings

FIG. 1 is an air purification device provided by the present invention;

FIG. 2 is a schematic view of a filter screen according to one embodiment of the present invention;

fig. 3 is a schematic view of a filter screen according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below by way of embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, an embodiment of the present invention provides an air purification apparatus, including a housing, a plurality of filter screens 10, and a filter screen frame (not shown);

the housing comprises a top wall 20, a side wall 30 and a bottom wall 40, and the top wall 20, the side wall 30 and the bottom wall 40 form a cavity;

the plurality of screens 10 includes a first screen 110, a second screen 120, and a third screen 130;

the first filter screen 110 comprises a first screen plate and active potassium permanganate carried by the first screen plate;

the second screen 120 includes a second screen plate and activated alumina supported by the second screen plate;

the third screen 130 comprises a third screen plate and a 13X molecular sieve carried by the third screen plate;

the strainer holder is arranged in the cavity and used for bearing the plurality of strainers 10, and the strainers 10 are arranged in the strainer holder in parallel.

According to the air purification device, the air is purified by using the three filter screens respectively comprising the active potassium permanganate, the active aluminum oxide and the 13X molecular sieve, formaldehyde is rapidly decomposed into carbon dioxide and water at room temperature, and other harmful substances in the air are absorbed, so that the pollutant gas in the air is efficiently purified.

In a preferred embodiment, the air purifying apparatus further includes an air inlet 80 and an air outlet 90, and the first filter screen 110, the second filter screen 120, and the third filter screen 130 are disposed between the air inlet 80 and the air outlet 90. The first screen 110, the second screen 120, and the third screen 130 are preferably spaced apart from each other. The air inlet 80 is preferably disposed on the bottom wall 40 of the air purification apparatus, the air outlet 90 is preferably disposed on the top wall 20 of the air purification apparatus, a direction extending from the bottom wall 40 to the top wall 20 may be defined as an axial direction of the air purification apparatus, and the first filter screen 110, the second filter screen 120 and the third filter screen 130 are preferably disposed perpendicular to the axial direction. Preferably, the first screen 110 is close to the air inlet 80, the third screen 130 is close to the air outlet 90, and the second screen 120 is disposed between the first screen 110 and the third screen 130. The active potassium permanganate in the first filter screen 110 is used for rapidly decomposing formaldehyde in the air into carbon dioxide and water; the activated alumina in the second filter screen 120 is used for removing moisture and polar harmful gases in the gas passing through the first filter screen 110, so that the air is further purified, and meanwhile, the moisture is prevented from contacting the third filter screen 130 too much, and the service life of the third filter screen 130 is prolonged; the third screen 130 is used to filter formaldehyde and other harmful gases escaping from the first two screens. The sequential arrangement can filter out formaldehyde and other TVOC (total volatile organic compound) harmful gases with maximum efficiency, and the matched arrangement can prolong the service life of each filter screen 10.

Optionally, the air outlet 90 is a vortex air outlet, and the vortex air outlet is an upward 45-degree air outlet to ensure air outlet efficiency of air.

Optionally, the active potassium permanganate, the active alumina and the 13X molecular sieve are spherical or granular, and preferably, one or more of the active potassium permanganate, the active alumina and the 13X molecular sieve have a particle size of 2mm to 5 mm. Experiments prove that when the particle size of the effective components in the filter screen is between 2mm and 5mm, gaps formed among the spherical or granular effective components can balance the resistance of air passing through the effective components, and the best filtering effect is achieved. Preferably, the gaps among the spherical or granular active potassium permanganate account for 10 to 20 percent of the area of the first mesh plate; gaps among the spherical or granular activated alumina accounts for 10 to 20 percent of the area of the second mesh plate; and the gaps among the spherical or granular 13X molecular sieves account for 10 to 20 percent of the area of the third screen plate. It can be understood that the areas of the meshes of the first mesh plate, the second mesh plate and the third mesh plate are respectively smaller than the maximum sectional areas of the active potassium permanganate, the active aluminum oxide and the 13X molecular sieve, so that the active potassium permanganate, the active aluminum oxide and the 13X molecular sieve can be stably arranged on the corresponding mesh plates and cannot leak out of the mesh plates.

Preferably, as shown in fig. 2, the number of the first mesh plates 112 in the first filter screen 110 is two, a single layer of the active potassium permanganate particles or spheres 114 is clamped between the two first mesh plates 112, and accordingly, the distance between the two first mesh plates 112 is equivalent to the size of the active potassium permanganate particles 114 or the diameter of the spheres. Preferably, the number of the second mesh plates in the second filter screen 120 is two, and a single layer of the activated alumina particles or spheres is sandwiched between the two second mesh plates, and accordingly, the distance between the two second mesh plates is equivalent to the particle size or the sphere diameter of the activated alumina. Preferably, the number of the third screen plates in the third screen 130 is two, the 13X molecular sieve particles or spheres are sandwiched between the two third screen plates, and correspondingly, the distance between the two first screen plates is equivalent to the particle size or the sphere diameter of the 13X molecular sieve. In this manner, the active ingredients in the screens can be stably fixed in the screens, so that the air can be brought into sufficient and stable contact with the active ingredients while passing through the respective screens 10, thereby ensuring high efficiency of air purification.

Optionally, according to actual requirements, the thickness of one or more of the plurality of filter screens 10 is 8mm to 100mm, the area of one or more of the plurality of filter screens 10 is 200mm × 200mm to 1000mm × 1000mm, the shape of the filter screen may be rectangular or other shapes, and the filter screen may be set according to actual requirements of the air purification device, please refer to fig. 3, preferably, at least one of the plurality of filter screens 10 has a W-shaped cross section, i.e. a folding fan-shaped cross section, so that the contact area of the filter screen and the air is increased, and the air purification efficiency is improved.

Optionally, at least one of the plurality of sieves 10 is a sieve group, the sieve group includes a plurality of sub-sieves parallel to each other, and a distance between the plurality of sub-sieves is 0.5cm to 1 cm. The number of the sub-grade filter screens can be set according to actual requirements. The interval with the sub-level filter screen sets up to between 0.5cm to 1cm, can guarantee that the form of air vortex is through the sub-level filter screen in the time, has increased the motion route of air to make the air form abundant contact with the active ingredient in the filter screen, improved air purification's efficiency.

Optionally, at least one of the first net plate, the second net plate and the third net plate is made of food-grade plastics, and in this way, the corresponding filter screen can be placed in an oven or a microwave oven for heating and regeneration, so that the filter screen is recycled, and the purification cost is reduced. For example, a second mesh plate made of food grade plastic is loaded with activated alumina balls to obtain a second filter screen 120, after a certain period of use, the second filter screen 120 is placed in an oven or a microwave oven to be heated, and substances such as water adsorbed by the activated alumina are desorbed, so that the second filter screen 120 recovers its efficacy, and similarly, the third filter screen 130 may be subjected to microwave heating treatment in the same manner, so that the third filter screen 130 recovers its efficacy.

Optionally, the active potassium permanganate component comprises potassium permanganate (KMnO)₄) And alumina (Al)₂O₃) Wherein Al is₂O₃The mass ratio of the potassium permanganate in the active potassium permanganate is 75-96 percent, and KMnO₄The mass ratio of the active potassium permanganate in the active potassium permanganate is 4-25%, and the active potassium permanganate has higher oxidizing ability than common potassium permanganate. The bulk density of the active potassium permanganate is less than or equal to 0.85g/mL, and the specific surface area is greater than or equal to 200m²The pore volume is more than or equal to 0.38ml/g, and the formaldehyde can be fully contacted with formaldehyde in the air to be oxidized into carbon dioxide and water. Optionally, the active potassium permanganate further comprises water with a mass fraction of more than 18%. Optionally, the active potassium permanganate further comprises Na with the mass fraction of less than or equal to 0.35%₂O。

Optionally, the 13X molecular sieve is a NA-X zeolite molecular sieve having a non-mesoporous structure and a pore size of 10A, and can effectively adsorb TVOC having a molecular diameter of 0.4 nm to 0.62 nm, such as ammonia, benzene, toluene, xylene, etc., besides formaldehyde, and adsorb these polar contaminants in a spherical cage structure containing NA of the 13X molecular sieve, so as to generate a higher adsorption amount and a higher filtration amount for them.

Optionally, the mass ratio of the active potassium permanganate to the aluminum oxide is 1:2 to 1:1, and the mass ratio of the active potassium permanganate to the 13X molecular sieve is 1:2 to 1: 1. Experiments prove that when the components in the filter screen of the purifier exist in the mass ratio, the air purifying effect and the air purifying efficiency are optimal.

Optionally, the air purification device further includes a small-particle-size anion generator 60, where the small-particle-size anion generator 60 is disposed on one side of the third filter screen 130 close to the air outlet 90, and is configured to capture, decompose, and settle harmful gases and particles remaining in the air to be filtered through remote anions, so as to further purify the air. Optionally, air purification device still includes first filter screen 101, and first filter screen 101 sets up in one side that first filter screen 110 is close to air intake 80, with first filter screen 110 parallel arrangement for carry out prefilter to the air, filter large granule impurity, dust and oily material in the air, avoid the particulate matter to contact other filter screens, guaranteed the life of other filter screens. For example, the first primary filter 101 may be a foam coarse filter, which is polyurethane foam, and the pore size ranges from 10PPI to 60PPI, and the size and shape may be selected according to actual requirements. Preferably, the first primary screen 101 has a length and width less than or equal to 2000mm and a thickness ranging between 8mm and 100 mm.

Optionally, the air purification device further includes a second primary filter screen 102, where the second primary filter screen 102 is disposed between the first primary filter screen 101 and the first filter screen 110, and is parallel to the first filter screen 110, and is used for filtering out dust particles with a particle size of 2.5mm or more in the air. For example, the second primary screen 102 may be a HEPA screen having a filtration efficiency between H10 and H14. The size and shape can be selected according to actual requirements. Preferably, second primary screen 102 has a length and width less than or equal to 2000mm and a thickness in the range of 8mm to 100 mm.

Optionally, the air purification apparatus further includes a fan 70, the fan 70 is located in the cavity and close to the air outlet 90, an axial direction of the fan 70 is parallel to an axial direction of the air purification apparatus, and the fan 70 is configured to adjust a purification rate of the air purification apparatus according to air quality. For example, when the air quality is poor, the fan 70 may be adjusted to a higher speed to move the air rapidly through the respective screens 10 in the air cleaning device to reduce the quality of the pollutants in the air as quickly as possible. When the air quality is good, the fan 70 can be adjusted to a lower power, i.e. rotated at a lower rotational speed, to reduce the energy consumption of the air cleaning device.

Optionally, the air purification device further includes a first power supply connection portion and a second power supply connection portion, and the first power supply connection portion is used for connecting an alternating current power supply, such as 220V household alternating current. The second power supply connection portion is used for connecting a storage battery, preferably, the storage battery is a solar storage battery, for example, a solar panel, and is disposed on the outer surface of the top wall 20 or the outer surface of the side wall 30 of the air purification apparatus. So as to ensure that the air purification device can store electricity in a place with illumination and provide running energy for each functional component in the air purification device.

Optionally, the air purification apparatus further includes at least one of a display, an intelligent control module, an air quality monitor, and an air humidity monitor, and the display may be disposed on an outer surface of the top wall 20 or an outer surface of the side wall 30 of the air purification apparatus for displaying an operating state of the air purification apparatus; the intelligent control unit is used for controlling the operation of each functional component of the air purification device according to the actual air environment; the air quality monitor is used for detecting the information of harmful components in the air, and the information can be fed back to the intelligent control unit and displayed on the display; the air humidity monitor is used for detecting the humidity of air, and humidity information can be fed back to the intelligent control unit and displayed on the display, so that the working state of the air purification device can be adjusted by the air purification device or a user.

Optionally, the air purification device further includes at least two rollers 82, and the rollers 82 are disposed on a side of the bottom wall away from the cavity, preferably symmetrically, so that the air purification device can flexibly and stably move during use.

The air purification device can be arranged in various indoor areas in different forms, for example, when the air purification device is a small-sized purification device, the air purification device can be used for purifying formaldehyde in a closed space of furniture, such as a small-sized closed area of a wardrobe, a drawer and the like. When being equipped with solar cell panel on air purification device, can be used for there being light department indoor, or in the automobile body of car, supply energy to air purification device through solar energy to purify the air, energy-concerving and environment-protective, and purification efficiency is high.

Experiments prove that the air purification device can purify a space with an indoor area of about 100 square meters and a floor height of about 2.8 meters for six weeks, can control indexes of indoor formaldehyde and total volatile organic compounds exceeding 6 times to be below national standards and reach the standards of health survival, and has purification cost far lower than the price of professional formaldehyde purification companies.

Example 1

The air purification device is used for purifying the air in the indoor space with the height of about 2.8 meters and the formaldehyde and other VOCS gases exceeding the national standard by 6 times; the air purification device comprises a shell, a plurality of filter screens, a filter screen frame, an air outlet and an air inlet, wherein the shell comprises a top wall, a side wall and a bottom wall, and the top wall, the side wall and the bottom wall form a cavity; the plurality of filter screens comprise a first filter screen, a second filter screen and a third filter screen; the first filter screen comprises a first screen plate and active potassium permanganate borne by the first screen plate, wherein the particle size of the active potassium permanganate is about 4mm, and the dosage of the active potassium permanganate is 3000 g; the second filter screen comprises a second screen plate and activated alumina loaded by the second screen plate, wherein the particle size of the activated alumina is about 4mm, and the dosage of the activated alumina is 3000 g; the third filter screen comprises a third screen plate and a 13X molecular sieve carried by the third screen plate, wherein the particle size of the 13X molecular sieve is about 4mm, and the using amount of the 13X molecular sieve is 6000 g; the strainer holder is arranged in be used for bearing in the cavity a plurality of filter screens, a plurality of filter screens set up in parallel each other in the strainer holder. First filter screen is close to the air intake, third filter screen 130 is close to the air outlet, second filter screen 120 sets up between first filter screen and the third filter screen.

Experiments prove that harmful gas exceeding 6 times in the indoor space can be purified to be lower than the national standard only in six weeks.

Example 2

The same indoor space as in example 1 was air-cleaned using the air cleaning apparatus described above; embodiment 2 differs from the air cleaning apparatus of embodiment 1 only in that the second filter is adjacent to the air outlet, and the third filter is disposed between the first filter and the second filter.

Experiments prove that harmful gas exceeding 6 times in the indoor space can be purified to be lower than the national standard only in eight weeks.

The technical features of the embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the combinations should be considered as the scope of the description in the present specification.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An air purification device is characterized by comprising a shell, a plurality of filter screens and a filter screen frame;

2. The air purification apparatus according to claim 1,

the number of the first screen plates is two, and the active potassium permanganate is clamped between the two first screen plates;

3. The air purification apparatus of claim 1, wherein one or more of the activated potassium permanganate, the activated alumina, and the 13X molecular sieve are spherical or granular.

4. The air purification apparatus of claim 3, wherein one or more of the activated potassium permanganate, the activated alumina, and the 13X molecular sieve have a particle size of 2mm to 5 mm.

5. The air purification apparatus according to claim 4, wherein the air purification apparatus satisfies the following conditions:

the gaps among the spherical or granular 13X molecular sieves account for 10 to 20 percent of the area of the third screen plate.

6. The air purification device according to claim 1, wherein the active potassium permanganate comprises aluminum oxide and potassium permanganate, the mass ratio of the aluminum oxide in the active potassium permanganate is 75% to 96%, and the mass ratio of the potassium permanganate in the active potassium permanganate is 4% to 25%.

7. The air purification apparatus of claim 1, wherein at least one of the plurality of screens is fan-folded in cross-section.

8. The air purification apparatus of claim 1, wherein at least one of the plurality of screens is a screen pack comprising a plurality of sub-stage screens parallel to each other, and the plurality of sub-stage screens are spaced apart by 0.5cm to 1 cm.

9. The air purification device of claim 1, wherein the mass ratio of the active potassium permanganate to the aluminum oxide is 1:2 to 1:1, and the mass ratio of the active potassium permanganate to the 13X molecular sieve is 1:2 to 1: 1.

10. The air purification device of claim 1, further comprising an air inlet and an air outlet, wherein the first filter screen, the second filter screen and the third filter screen are sequentially disposed, the first filter screen is close to the air inlet, and the third filter screen is close to the air outlet.

11. The air purification apparatus of claim 10, further comprising a fan located in the cavity near the air outlet, wherein an axial direction of the fan is parallel to an axial direction of the air purification apparatus.

12. The air cleaning device according to claim 1, further comprising a small-particle-size anion generator disposed on a side of the third filter screen facing away from the second filter screen.

13. The air purification device of claim 1, further comprising a foam filter having a pore size of 10PPI to 60PPI, the foam filter being located on a side of the first filter adjacent to the bottom wall and disposed parallel to the first filter.

14. The air purification device of claim 13, further comprising a HEPA screen, wherein the HAPE screen is disposed between the foam screen and the first screen and is parallel to the first screen.

15. The air purification apparatus of claim 1, wherein one or more of the plurality of screens has an area of 200mm × 200mm to 1000mm × 1000 mm.

16. The air purification apparatus of claim 1, wherein one or more of the plurality of screens has a thickness of 8mm to 100 mm.