CN111376681A

CN111376681A - Vehicle-mounted air purifier

Info

Publication number: CN111376681A
Application number: CN201811644971.4A
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 a vehicle-mounted air purifier which comprises a shell, a plurality of filter screens, a filter screen frame power supply unit and at least one fan, wherein the filter screens are arranged on the shell; the shell comprises a first end cover, a side wall and a second end cover, and the first end cover, the side wall and the second end cover form a cavity together; 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 filter screen frame is arranged in the cavity and used for bearing a plurality of filter screens, and the plurality of filter screens are arranged in parallel on the filter screen frame; the power supply unit is arranged in the cavity, is positioned on the upper surface of the second end cover and is electrically connected with the fan; the first end cover is formed with at least one air outlet, and at least one fan is arranged in a corresponding one of the at least one air outlet.

Description

Vehicle-mounted air purifier

Technical Field

The invention belongs to the field of air purification, and particularly relates to a vehicle-mounted air purifier.

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 formaldehyde has high reactivity and can be reacted withThe molecule with hydroxyl, sulfhydryl and amino groups has nucleophilic addition reaction to prevent the synthesis of nuclear protein in human body and inhibit cell division and the synthesis of 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 strongly oxidizing formaldehyde scavenger can oxidize formaldehyde, but it itself is easily decomposed and loses 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. 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 temperature in the space, the humidity in the air increases and the formaldehyde emission amount 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 good-quality formaldehyde removing product, and in fact, the photocatalyst needs ultraviolet light to play a role, and all places in a vehicle body cannot receive the irradiation of the ultraviolet light in the sunlight, particularly, the places with the most serious formaldehyde release, such as the back of a seat, and the like, can not see light. 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 fact, the harmful substances absorbed by the plants are very limited, and the plants can only play an auxiliary treatment role on the harmful substances such as formaldehyde, benzene and the like.

At present, the purification efficiency of the common vehicle-mounted air purifier on total volatile organic compounds in the vehicle, especially the purification efficiency on formaldehyde, is still to be improved.

Disclosure of Invention

Based on this, it is necessary to provide a high-efficiency vehicle air cleaner.

A vehicle-mounted air purifier comprises a shell, a plurality of filter screens, a filter screen frame, a power supply unit and at least one fan;

the housing comprises a first end cover, a side wall and a second end cover, and the first end cover, the side wall and the second end cover together 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 filter screen frame is arranged in the cavity and used for bearing the plurality of filter screens, and the plurality of filter screens are arranged in the filter screen frame in parallel;

the power supply unit is arranged in the cavity, and the second end cover is electrically connected with the fan;

the first end cover is provided with an air outlet, and the fan is arranged in the air outlet of the first end cover.

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 on-board air purifier satisfies at least one of 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 fan further comprises an air inlet, the second end cover is provided with the air inlet, 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 fan.

In one embodiment, the number of the fans is 3-5, and 3-5 fans are uniformly distributed on the first end cover.

In one embodiment, the power supply unit includes an in-vehicle power supply portion for directly supplying power to the in-vehicle air cleaner and/or for charging the battery, and a battery supply portion.

In one embodiment, the solar energy storage device further comprises a solar panel, wherein the solar panel is positioned on the outer surface of the shell and is electrically connected with the battery, and is used for converting solar energy into electric energy and storing the electric energy in the battery.

In one embodiment, the filter further comprises a small-particle-size anion generator, a foam filter screen and a HEPA filter screen, wherein the small-particle-size anion generator is arranged on one side, deviating from the second filter screen, of the third filter screen, the pore size of the foam filter screen is 10PPI to 60PPI, the foam filter screen is arranged on one side, close to the second end cover, of the first filter screen and is arranged in parallel with the first filter screen, and the HAPE filter screen is arranged between the foam filter screen and the first filter screen and is parallel with the first filter screen.

In one embodiment, the area of one or more of the plurality of screens is 100mm × 100mm to 500mm × 500mm, and the thickness of one or more of the plurality of screens is 8mm to 50 mm.

The vehicle-mounted air purifier provided by the invention purifies air by using three layers of filter screens respectively comprising active potassium permanganate, active aluminum oxide and a 13X molecular sieve, quickly decomposes formaldehyde into carbon dioxide and water at room temperature, and absorbs other harmful substances in the air, thereby efficiently purifying polluting gases in the air in a vehicle.

Drawings

FIG. 1 is a schematic view of a housing of a vehicle air purifier provided in accordance with one embodiment of the present invention;

FIG. 2 is a schematic view of a plurality of screens of an in-vehicle air purifier 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;

FIG. 4 is a schematic view of a filter screen according to yet another embodiment of the present invention;

fig. 5 is a schematic view of a housing of a vehicle air purifier 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 and 2, an embodiment of the present invention provides a vehicle air purifier, which includes a housing, a plurality of filter screens 10, a filter screen frame 12, a power supply unit (not shown), and at least one fan 70.

The housing includes a first end cap 20, a sidewall 30, and a second end cap 40, and the first end cap 20, the sidewall 30, and the second end cap 40 together form a cavity. The plurality of screens 10 includes a first screen 110, a second screen 120 and a third screen 130. The first screen 110 includes a first screen 112 and active potassium permanganate carried by the first screen 112. The second screen 120 includes a second screen plate and activated alumina supported by the second screen plate. The third screen 130 includes a third screen plate and a 13X molecular sieve carried by the third screen plate. The filter screens 10 are arranged in the cavity and used for bearing the filter screens 10, and the filter screens 10 are arranged in the filter screen frame 12 in parallel. The power supply unit is disposed in the cavity, and the second end cap 40 is electrically connected to the fan 70. The first end cap 20 is opened with an air outlet 90, and the fan 70 is disposed in the air outlet 90 of the first end cap 20.

The vehicle-mounted air purifier purifies air by using the three filter screens 10 respectively comprising the active potassium permanganate, the active aluminum oxide and the 13X molecular sieve, quickly decomposes formaldehyde into carbon dioxide and water at room temperature, and absorbs other harmful substances in the air, thereby efficiently purifying pollutant gases in the air.

In a preferred embodiment, the vehicle air purifier further includes an intake vent 80 located at the second end cap 40, and the first filter mesh 110, the second filter mesh 120, and the third filter mesh 130 are disposed between the intake vent 80 and the fan 70. The first screen 110, the second screen 120, and the third screen 130 are preferably spaced apart from each other. The intake vent 80 is preferably provided at the second end cap 40 of the vehicle air cleaner, the housing is preferably cylindrical, a direction extending from the second end cap 40 to the first end cap 20 may define an axial direction of the vehicle air cleaner, and the first, second, and

third screens

110, 120, and 130 are preferably provided perpendicular to the axial direction. The first screen 110 is preferably adjacent to the air inlet 80, the third screen 130 is preferably adjacent to the fan 70, 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 10. 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 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 grain diameter of the effective components in the filter screen 10 is between 2mm and 5mm, the 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 between the spherical or granular active potassium permanganate account for 10 to 20 percent of the area of the first screen plate 112; 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 112, the second mesh plate and the third mesh plate are respectively smaller than the maximum sectional areas of the activated potassium permanganate, the activated alumina and the 13X molecular sieve, so that the activated potassium permanganate, the activated alumina and the 13X molecular sieve can be stably arranged on the corresponding mesh plates without leaking out of the mesh plates.

Preferably, as shown in fig. 3, 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 accordingly, the distance between the two first screen plates 112 is equivalent to the particle size or the sphere diameter of the 13X molecular sieve. In this manner, the effective components in the filter screens 10 can be stably fixed in the filter screens 10, so that the air can be brought into sufficient and stable contact with the effective components while passing through the respective filter 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 50mm, the area of one or more of the plurality of filter screens 10 is 100mm × 100mm to 500mm × 500mm, the shape of the filter screen 10 may be rectangular, circular or other shapes, and the filter screen may be set according to actual requirements of the vehicle air purifier.

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 sub-level filter screen sets up to between 0.5cm to 1cm, can guarantee that the form of air vortex is through 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 10, improved air purification's efficiency.

Optionally, at least one of the first net plate 112, the second net plate, and the third net plate is made of food-grade plastic, in this way, the corresponding filter screen 10 may be placed in an oven or a microwave oven for heating and regeneration, so that the filter screen 10 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. It is proved through experiments that when the components in the filter screen 10 of the purifier exist in such a mass ratio, the purifying effect and the purifying efficiency to the air are the best.

Optionally, the vehicle-mounted air purifier further includes a small-particle-size anion generator, which is disposed on one side of the third filter screen 130 close to the fan 70, 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, on-vehicle air purifier still includes first just filter screen, and first just filter screen 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 10, guaranteed other filter screens 10's life. For example, the first primary filter screen may be a foam coarse filter screen, the foam coarse filter screen is polyurethane foam, the pore size ranges from 10PPI to 60PPI, and the appropriate size and shape may be selected according to actual requirements. Preferably, the first primary screen has a length and width less than or equal to 500mm and a thickness in the range of 8mm to 50 mm.

Optionally, on-vehicle air purifier still includes the first filter screen of second, the first filter screen of second sets up between first filter screen and first filter screen 110, with first filter screen 110 parallel arrangement for filter the micronic dust that is greater than 2.5mm of particle size in the air. For example, the second primary screen 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, the second primary screen has a length and width less than or equal to 500mm and a thickness in the range of 8mm to 50 mm.

Alternatively, when the fans 70 are provided in one, the axial direction of the fans 70 is parallel to the axial direction of the in-vehicle air cleaner, and more preferably, the axial direction of the fans 70 coincides with the axial direction of the in-vehicle air cleaner, when the fans 70 are provided in plural, the plural fans 70 are preferably uniformly distributed on the first head cover 20, the number of the fans 70 is preferably 3 to 5, for example, as shown in FIG. 5, the fans 70 may be provided in 4 and uniformly distributed on the first head cover 20 in an array of 2 × 2. the fans 70 may be used to adjust the cleaning rate of the in-vehicle air cleaner according to the quality of the air.

Optionally, the vehicle-mounted air purifier 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 first end cap 20 or an outer surface of the sidewall 30 of the vehicle-mounted air purifier for displaying an operating state of the vehicle-mounted air purifier; the intelligent control unit is used for controlling the operation of each functional component of the vehicle-mounted air purifier 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 vehicle-mounted air purifier can be adjusted by the vehicle-mounted air purifier or a user.

In one embodiment, the power supply unit includes an in-vehicle power supply portion for directly supplying power to the in-vehicle air cleaner and/or for supplying power to the battery, and a battery supply portion. The vehicle-mounted power supply unit may include a plug, a USB interface, or the like, and may be electrically connected to a vehicle-mounted power supply of a standard 24V or 12V on the vehicle. The battery may be a lithium battery. Further, the in-vehicle air cleaner may further include a solar panel located at an outer surface of the housing, for example, at an upper surface of the first end cap 20 or at an outer surface of the sidewall 30; the solar panel is also electrically connected with the battery and used for converting solar energy into electric energy and storing the electric energy in the battery.

The vehicle-mounted air purifier can be arranged in various areas in a vehicle, for example. When being equipped with the solar energy electroplax on-vehicle air purifier, can be used for there being light department in the car, supply energy to on-vehicle air purifier through solar energy to purify the air, energy-concerving and environment-protective, and purification efficiency is high. The vehicle-mounted air purifier in the application can also be used in other parts of the vehicle, for example, a mesh bag arranged on the back of a vehicle seat or a trunk, and good purification efficiency can be still realized in places without illumination.

With the on-vehicle air purifier of one of them embodiment in this application be used for the purification to the formaldehyde of new car, its purifying effect as follows:

example 1

The vehicle-mounted air purifier is used for purifying air in five new vehicles with formaldehyde and other VOCS gas exceeding the national standard by 4 times. The first filter screen 110 of the vehicle-mounted air purifier comprises a first screen plate 112 and active potassium permanganate carried by the first screen plate 112, wherein the particle size of the active potassium permanganate is about 4mm, and the dosage of the active potassium permanganate is 50 g; the second filter screen 120 comprises a second screen plate and activated alumina supported by the second screen plate, wherein the particle size of the activated alumina is about 4mm, and the dosage of the activated alumina is 50 g; the third screen 130 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 dosage of the 13X molecular sieve is 100 g; the strainer holder 12 is disposed in the cavity and used for holding the plurality of strainers 10, and the strainers 10 are disposed in parallel to each other on the strainer holder 12. First filter screen 110 is close to the air intake, third filter screen 130 is close to air outlet 90, second filter screen 120 is disposed between first filter screen 110 and third filter screen 130.

Experiments prove that harmful gas exceeding 4 times in the vehicle can be purified to be lower than the national standard only in 1 week.

Example 2

The same indoor space as in example 1 was air-cleaned using the above-mentioned on-board air cleaner; embodiment 2 is different from the in-vehicle air cleaner of embodiment 1 only in that the second filter 120 is adjacent to the air outlet 90, and the third filter 130 is disposed between the first filter 110 and the second filter 120.

Experiments prove that harmful gas exceeding 4 times in the vehicle can be purified to be lower than the national standard only in 1.5 hours.

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. A vehicle-mounted air purifier is characterized by comprising a shell, a plurality of filter screens, a filter screen frame, a power supply unit and at least one fan;

2. The vehicle air purifier of 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 vehicle air purifier 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 vehicle air purifier of claim 3, wherein 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.

5. The vehicle air purifier of claim 4, wherein the vehicle air purifier satisfies at least one of:

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 vehicle-mounted air purifier of 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 75-96%, and the mass ratio of the potassium permanganate in the active potassium permanganate is 4-25%.

7. The vehicle air purifier of claim 1, wherein a cross-section of at least one of the plurality of filter screens is a fan-fold shape.

8. The vehicle air purifier 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, the plurality of sub-stage screens being spaced apart from each other by 0.5cm to 1 cm.

9. The vehicle-mounted air purifier 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 vehicle-mounted air purifier of claim 1, wherein the second end cap is provided with an air inlet, 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 fan.

11. The vehicle air purifier as recited in claim 1, wherein the number of the fans is 3-5, and 3-5 of the fans are evenly distributed on the first end cover.

12. The vehicle air purifier of claim 1, wherein the power supply unit comprises a vehicle power supply and a battery supply, the vehicle power supply being configured to directly power the vehicle air purifier and/or to charge the battery.

13. The in-vehicle air purifier of claim 12, further comprising a solar panel located on an outer surface of the housing and electrically connected to the battery for converting solar energy into electrical energy for storage in the battery.

14. The vehicle-mounted air purifier of claim 1, further comprising a small-particle-size anion generator, a foam filter and a HEPA filter, wherein the small-particle-size anion generator is disposed on a side of the third filter facing away from the second filter, a pore size of the foam filter is 10PPI to 60PPI, the foam filter is disposed on a side of the first filter close to the second end cap and parallel to the first filter, and the HAPE filter is disposed between the foam filter and the first filter and parallel to the first filter.

15. The vehicle air cleaner of claim 1, wherein one or more of the plurality of screens has an area of 100mm × 100mm to 500mm × 500mm and a thickness of 8mm to 50 mm.