CN206094328U - An air purification device based on photocatalytic technology - Google Patents

Abstract

The utility model provides an air purification device based on photocatalysis technique, including casing, filter screen, fan and the control scheme that has air intake and air outlet, its characterized in that: the filter screen comprises at least one layer of primary filter screen for filtering out large-diameter particles in the air; at least one layer of active carbon filter screen for filtering formaldehyde substances and peculiar smell in the air; at least one HEPA high-efficiency filter screen for filtering micron-sized particles including PM2.5 in the air; at least one layer of nano titanium dioxide filter screen for oxidizing and decomposing bacteria and releasing water molecules; the shell is provided with an ultraviolet lamp, and the nano titanium dioxide filter screen is positioned in an ultraviolet lamp irradiation area. The utility model provides a have the filter screen structure that comprises a plurality of filtering layers, be the effective filter media of pollutants such as smog, dust and bacterium carrier, creatively adopt titanium dioxide photocatalysis technique to form strong oxidation region simultaneously, effectively exterminate microcosmic bacterium, prevent that harmful organic matter from continuously breeding.

Description

An air purification device based on photocatalytic technology

technical field

The utility model relates to an air purification device based on photocatalysis technology.

Background technique

With the acceleration of the urbanization process, the urban population density is getting higher and higher, and people work and live in limited confined spaces, resulting in the inability to circulate and discharge various exhaust gas pollutants in time, and it is easy to stay and produce bacteria. In addition, outdoor industrial waste gas dust, automobile exhaust, etc. will also flow into the room, affecting people's health. Therefore, air purification must solve air pollution in many aspects in order to improve people's living environment.

Utility model content

The utility model provides an air purification device based on photocatalysis technology, which has the functions of sterilization and dust removal, and solves various indoor air pollution problems. The specific technical content is as follows:

An air purification device based on photocatalytic technology, including a housing with an air inlet and an air outlet, a filter screen, a fan and a control circuit, the filter screen includes

At least one layer of primary filter for filtering out large diameter particles in the air;

At least one layer of activated carbon filter to filter out formaldehyde and odor in the air;

At least one layer of HEPA high-efficiency filter to filter out micron-sized particles including PM2.5 in the air;

At least one layer of nano-titanium dioxide filter for oxidative decomposition of bacteria and release of water molecules;

An ultraviolet lamp is arranged on the housing, and the nano-titanium dioxide filter is located in the irradiation area of the ultraviolet lamp.

In one or more embodiments of the present utility model, the ultraviolet lamp is arranged at the air inlet, and the nano-titanium dioxide filter, HEPA high-efficiency filter, activated carbon filter and primary filter are sequentially arranged from the air inlet to the outside. .

In one or more embodiments of the present utility model, an installation slot for accommodating the filter screen is provided on the back side of the housing, and the air inlet is provided in the installation slot.

In one or more embodiments of the present utility model, the opening of the installation groove is sealed by a grid-shaped back cover, and the diameter of each grid on the back cover is greater than or equal to 15mm*15mm.

In one or more embodiments of the present invention, the total ventilation area of the grid accounts for 80%-90% of the total area of the back cover.

In one or more embodiments of the present utility model, the primary filter has a piled high-density textile fiber layer.

In one or more embodiments of the present utility model, the activated carbon filter is a honeycomb mesh.

In one or more embodiments of the present utility model, the nano-titanium dioxide filter screen has a nano-scale titanium dioxide particle aggregation layer with a density greater than or equal to 8500 meshes per square meter.

In the above solution, the material of the primary filter includes plush high-density textile fibers. The plush fibrous filter layer increases the dust holding parameters by 20%, and the service life is twice that of ordinary filters. It can efficiently filter large particle pollutants: dust, dander, hair and other bacterial residues and allergens. The primary filter is located on the outermost side to filter large particles of pollutants and prolong the life of the rear filter.

The structure of the activated carbon filter is honeycomb, and the purification efficiency is 20% higher than that of ordinary activated carbon filters. It can quickly absorb and decompose harmful organic substances such as formaldehyde and benzene, and effectively remove odors.

The HEPA high-efficiency filter has a removal rate of 99.7% for particles with a diameter of 0.3 microns or more. The characteristic of the HEPA high-efficiency filter is that air can pass through, but fine particles cannot pass through. Effective filter media.

The nano-titanium dioxide filter can produce a catalytic degradation effect under the irradiation of ultraviolet lamps, which can degrade toxic and harmful gases in the air, and at the same time can produce a large number of highly oxidizing hydroxyl radicals and active oxygen. When in this area, it is instantly oxidized and decomposed, and its DNA or RNA is destroyed, which makes up for the shortcoming of the low efficiency of single photocatalytic disinfection, completely kills bacteria and viruses, and achieves excellent disinfection effect.

In one or more embodiments of the present utility model, the control circuit is connected with an air dust detection device and an air quality indicator light, and the air quality indicator light indicates the air quality of the current space with lights of different colors.

In one or more embodiments of the present utility model, the control circuit includes a controller and a wireless module connected and communicated with the remote control\smart terminal, and the controller can lock or lock according to the instructions of the remote control\smart terminal The unlocking function locks/unlocks the control circuit (operation panel) to prevent misoperation of the purification device by children.

The air purification device based on photocatalytic technology provided by the utility model has the following benefits: a filter screen structure composed of multiple filter layers is provided, which can effectively remove large and fine particle pollutants, which are smog, dust and bacterial carriers, etc. An effective filter medium for pollutants, while innovatively adopting titanium dioxide photocatalytic technology to form a strong oxidation area, which has an efficient bactericidal effect on the airflow entering the device and releases abundant water molecules. The utility model not only overcomes the problem of traditional macroscopic filtration and purification, but also can effectively kill microscopic bacteria, prevent harmful organic matter from continuously breeding, and solve various indoor air pollution problems.

Description of drawings

Fig. 1 is the front view of the air purification device based on photocatalytic technology of the present utility model.

Fig. 2 is an exploded view of the back side of the air purification device based on photocatalytic technology of the present invention.

detailed description

The application scheme is further described in conjunction with accompanying drawings 1 and 2 as follows:

An air purification device based on photocatalytic technology, including a housing 1 with an air inlet 11 and an air outlet 12, a filter screen 2, a fan 3 and a control circuit, the control circuit includes a controller, an operation panel 4 and a remote control\smart terminal The wireless module of communication is connected, the operation panel 4 is used to obtain the user's setting operation on the device, and the controller has the function of locking or unlocking according to the instructions of the remote control\smart terminal.

The filter screen 2 includes

At least one layer of primary filter 21 has a velvet high-density textile fiber layer, which is used to filter out large-diameter particles such as dust and animal hair in the air; the velvet fibrous filter layer increases the dust holding parameter by 20%, and the service life is Twice as much as ordinary filters, highly efficient filtration of large particle pollutants: dust, dander, hair and other bacterial residues and allergens. The primary filter is located on the outermost side, filtering large particles of pollutants, which can prolong the life of the rear filter;

At least one layer of activated carbon filter 22, with a honeycomb structure, is used to filter out formaldehyde substances and odors in the air; the purification efficiency of the honeycomb structure is 20% higher than that of ordinary activated carbon filters, and it can quickly absorb and decompose formaldehyde, benzene, etc. Harmful organic matter, effectively removes peculiar smell;

At least one layer of HEPA high-efficiency filter screen 23 is used to filter out micron-sized particles including PM2.5 in the air; the HEPA high-efficiency filter screen has a removal rate of 99.7% for particles with a diameter of 0.3 micron or more, and the HEPA high-efficiency filter screen The characteristic is that air can pass through, but fine particles cannot pass through, and it is an effective filter medium for pollutants such as smoke, dust and bacterial carriers;

At least one layer of nano-titanium dioxide filter 24, having a density greater than or equal to 8,500 meshes per square meter of nano-scale titanium dioxide particle aggregation layer, used to oxidize and decompose bacteria and release water molecules; the nano-titanium dioxide filter is catalyzed and degraded under the irradiation of ultraviolet light Effect, it can degrade toxic and harmful gases in the air, and at the same time, it can produce a large number of highly oxidizing hydroxyl radicals and active oxygen. When bacteria or viruses in the airflow approach this area, they will be oxidized and decomposed instantly, and their DNA or RNA will be destroyed. , to make up for the shortcomings of low efficiency of single photocatalytic disinfection, to completely kill bacteria and viruses, and achieve excellent disinfection effect;

The housing 1 is provided with an ultraviolet lamp 5, the nano-titanium dioxide filter screen 24 is located in the irradiation area of the ultraviolet lamp 5, the ultraviolet lamp 5 is arranged at the air inlet 11, and the air inlet 11 is sequentially provided with the Nano-titanium dioxide filter screen 24, HEPA high-efficiency filter screen 23, activated carbon filter screen 22 and primary filter screen 21.

The back side of the housing 1 is provided with an installation groove 10 for accommodating the filter screen 2, and the air inlet 11 is arranged in the installation groove 10. During specific implementation, the aperture of the air inlet 11 is greater than or equal to 20 cm, so The opening of the installation groove 10 is sealed by a grid-shaped back cover 13, the diameter of each grid 130 on the back cover 13 is greater than or equal to 15mm*15mm, and the total ventilation area of the grid 130 accounts for the total area of the back cover 13. 80%-90% of that, to increase the air intake by about 2 times of ordinary air purifiers, up to 410 cubic meters. The rear cover 13 is fixed through the installation positions 101a and 101b on the edge of the installation groove 10. The filter screen 2 is actually located outside the housing 1, which is convenient for users to disassemble and assemble to clean and replace the filter screen 2 without repairing the housing 1. Disassemble.

The control circuit is connected with an air dust detection device 6 and an air quality indicator light 7, and the air quality indicator light 7 indicates the current space air quality with lights of different colors; the air dust detection device 6 is started immediately after power-on to obtain the current air quality. The air quality data of the space, the air quality data is reflected by the lights of different colors of the air quality indicator light 7 after being processed by the controller, and can also be used as the control parameter of the fan 3 speed of the device, which is increased when the air quality is low Purification treatment intensity, and when the air quality is better, the speed of fan 3 is appropriately reduced to save electric energy.

Working principle of the utility model:

The air first enters the primary filter screen 21, and large particle pollutants such as dust, dander, hair and other bacterial residues and allergens adhere to the primary filter screen; when the air after primary filtration enters the activated carbon filter screen 22, formaldehyde, benzene, etc. Harmful organic matter or various odors are adsorbed on the honeycomb-shaped activated carbon; the air filtered twice passes through the HEPA high-efficiency filter 23, and fine pollutants such as smoke and dust are filtered; the air filtered three times finally enters the nano-titanium dioxide filter 24. The nano-titanium dioxide filter 24 produces a large amount of highly oxidizing hydroxyl radicals and active oxygen under the irradiation of the ultraviolet lamp 5. When the bacteria or viruses in the air flow approach this area, they are instantly oxidized and decomposed, and their DNA or The RNA is destroyed, which can completely kill bacteria and viruses and achieve a disinfection effect.

The above-mentioned preferred implementation mode should be regarded as an illustration of the implementation mode of the scheme of this application, and any technical deduction, replacement, improvement, etc. that are similar to, similar to, or based on the scheme of this application should be regarded as the scope of protection of this patent.

Claims (10)

1. An air purification device based on photocatalytic technology, comprising a housing with an air inlet and an air outlet, a filter screen, a blower fan and a control circuit, characterized in that: the filter screen includes At least one layer of primary filter for filtering out large diameter particles in the air; At least one layer of activated carbon filter to filter out formaldehyde and odor in the air; At least one layer of HEPA high-efficiency filter to filter out micron-sized particles including PM2.5 in the air; At least one layer of nano-titanium dioxide filter for oxidative decomposition of bacteria and release of water molecules; An ultraviolet lamp is arranged on the housing, and the nano-titanium dioxide filter is located in the irradiation area of the ultraviolet lamp. 2. The air purification device based on photocatalytic technology according to claim 1, characterized in that: the ultraviolet lamp is arranged at the air inlet, and the nano-titanium dioxide filter screen and HEPA high-efficiency filter are arranged in sequence from the air inlet outwards mesh, activated carbon filter and pre-filter. 3. The air purification device based on photocatalytic technology according to claim 1 or 2, characterized in that: the back side of the housing is provided with an installation groove for accommodating the filter screen, and the installation groove is provided with the air inlet. 4. The air purification device based on photocatalytic technology according to claim 3, characterized in that: the opening of the installation groove is sealed by a grid-shaped back cover, and the diameter of each grid on the back cover is larger than Equal to 15mm*15mm. 5. The air purification device based on photocatalytic technology according to claim 4, characterized in that: the total ventilation area of the grid accounts for 80%-90% of the total area of the rear cover. 6 . The air purification device based on photocatalytic technology according to claim 1 , characterized in that: the primary filter screen has a plush high-density textile fiber layer. 7. The air purification device based on photocatalytic technology according to claim 1, characterized in that: the activated carbon filter is honeycomb mesh. 8. The air purification device based on photocatalytic technology according to claim 1, characterized in that: the nano-titanium dioxide filter screen has a nano-scale titanium dioxide particle aggregation layer with a density greater than or equal to 8500 meshes per square meter. 9. The air purification device based on photocatalytic technology according to claim 1, characterized in that: the control circuit is connected with an air dust detection device and an air quality indicator light, and the air quality indicator light indicates the current Space air quality. 10. The air purification device based on photocatalytic technology according to claim 1, characterized in that: the control circuit includes a controller and a wireless module connected and communicated with the remote control\smart terminal, and the controller has a function according to the remote control \The function of locking or unlocking by command of the smart terminal.