Air purification device with low-temperature plasma coupled with carbon dioxide adsorption

Abstract

The invention provides an air purification device with low-temperature plasma coupled with carbon dioxide adsorption, a machine body of the device is provided with peripheral air inlets and a top air outlet, and a pretreatment module, a fan module, a low-temperature plasma module, an ozone adsorption module and a carbon dioxide adsorption module are sequentially mounted in the machine body. During operation, the fan sucks air from the air inlet, large-particle pollutants are removed through pretreatment, then the air is purified, sterilized and disinfected through the low-temperature plasma module, harmful gas pollutants are decomposed, peculiar smells are removed, generated ozone is absorbed by the ozone adsorption layer, carbon dioxide is adsorbed by the carbon dioxide adsorption module, and finally clean air is discharged from the air outlet. The common pathogen inactivation rate exceeds 90%, the formaldehyde removal rate is increased, the ozone outlet concentration is controlled, double-path CO2 control is achieved, the pollutant treatment range is widened through a four-stage collaborative purification system, the energy-saving efficiency is improved, and the device has extremely high practical value and wide social significance.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification equipment, and more particularly, to an air purification device coupling low-temperature plasma and carbon dioxide adsorption. Background Art

[0002] In modern society, people spend most of their time in indoor environments, and indoor air quality has become an important factor affecting people's quality of life and health. The wide application of various decoration materials and furniture has made the types of indoor air pollutants increasingly complex.

[0003] Indoor air pollutants can generally be classified into three major categories: physical pollutants, chemical pollutants, and biological pollutants. Physical pollutants mainly refer to particulate matter and smaller-sized particles, such as PM2.5 and PM10, which can enter the human respiratory tract and even the lungs, causing respiratory infections, asthma, and bronchitis. Long-term inhalation can also increase the risk of cardiovascular diseases and lung cancer.

[0004] Among chemical pollutants, formaldehyde, benzene and its homologues, and ammonia are relatively common. Data from the Indoor Environment Monitoring Center of the China National Interior Decoration Association shows that the formaldehyde exceeding standard rate in newly decorated families in China is as high as 70%-80%, mainly from artificial boards, paint coatings, and adhesives. When the indoor formaldehyde concentration reaches 0.08-0.1 mg / m 3 ³, people will have slight peculiar smells and obvious discomfort; when the concentration reaches 0.5 mg / m 3 ³, it will cause stinging and tearing of the eyes and strong irritation to the respiratory tract, seriously affecting people's normal life and work. Long-term exposure is more likely to induce cancer. Benzene and its homologues mainly exist in paints, adhesives, and waterproof materials, and are harmful to the human nervous system, blood system, and reproductive system. The International Agency for Research on Cancer (IARC) has classified benzene as a Group 1 carcinogen. Long-term inhalation of high concentrations of benzene and its homologues will greatly increase the risk of leukemia, lymphoma, multiple myeloma, and other malignant tumors.

[0005] Biological pollutants include bacteria, viruses, and molds. Exposure to this environment is likely to cause allergic reactions, respiratory infections caused by bacteria and viruses, resulting in influenza and pneumonia. Long-term exposure to a biologically polluted environment will stimulate the immune system and cause immune dysfunction. Toxins and metabolites of some biological pollutants will also affect the nervous system, leading to headaches, dizziness, and insomnia.

[0006] For these indoor air pollutants, the existing treatment methods have significant limitations. The simplest treatment method is ventilation. When the number of air changes per hour reaches 3 - 5 times, it can effectively dilute indoor pollutants. However, this method is greatly affected by outdoor air quality and weather. Other methods such as physical adsorption are easy to operate and low in cost, but have limited adsorption selectivity for different pollutants and cannot completely harmlessly treat pollutants; chemical purification uses chemical reactions to decompose pollutants, but there is a certain probability of generating new secondary pollutants during the reaction process; photocatalysis degrades pollutants by the active species generated by photocatalysts under light illumination. However, this method has better effects in the ultraviolet range and has high requirements for light intensity; biological purification uses the metabolic action of microorganisms to remove pollutants, but the purification speed is relatively slow and it is difficult to meet the demand for quickly improving indoor air quality.

[0007] The low-temperature plasma treatment technology shows unique advantages in the field of air purification, with the functions of effectively sterilizing and disinfecting, decomposing harmful gases such as formaldehyde and aromatic hydrocarbons, and removing odors. Relevant research shows that it can kill about 99.99% of microorganisms within a few minutes, even including drug-resistant bacteria and spores. Its application effect is particularly remarkable in places with extremely high hygiene requirements such as hospital wards and laboratories.

[0008] However, the low-temperature plasma treatment technology also has some limitations. Ozone is generated during the purification process and some pollutants will be oxidized to carbon dioxide. Although carbon dioxide is not a harmful gas, research shows that when the carbon dioxide content in the air exceeds 1000 ppm, people will feel dull, inattentive, and have palpitations; when the carbon dioxide concentration reaches 2000 ppm, people will feel mentally fatigued, and after exceeding 2000 ppm, the thinking ability will significantly decline; when the carbon dioxide concentration exceeds 5000 ppm, the human body functions will be seriously disordered, causing people to lose consciousness and become delirious. Therefore, we propose an air purification device that combines low-temperature plasma and carbon dioxide adsorption. Summary of the Invention

[0009] The object of the present invention is to solve the problems raised in the background art. The present invention provides the following technical solutions: An air purification device coupling low-temperature plasma and carbon dioxide adsorption, comprising a body, an air inlet and an air outlet are provided on the body, and a pretreatment module, a fan module, a low-temperature plasma module, an ozone adsorption module, and a carbon dioxide adsorption module are installed in the body; the air outlet is located at the top of the body, the air inlet is located around the body, and a carbon dioxide adsorption module, an ozone adsorption module, a low-temperature plasma module, a support partition, and a fan module are arranged in sequence from top to bottom. Below the fan module, from outside to inside are the air inlets around the body and the pretreatment module; when the air purification device operates, the fan sucks air from the surrounding air inlets, and after being purified by the pretreatment module, the low-temperature plasma module, the ozone adsorption module, and the carbon dioxide adsorption module, clean air is discharged from the top air outlet.

[0010] As a preferred technical solution of the present invention, a pretreatment module is provided at the air inlet part, and the pretreatment module selects a combination of HEPA filter paper and activated carbon as the filter layer.

[0011] As a preferred technical solution of the present invention, the pretreatment module can preliminarily adsorb harmful gases, remove odors, purify smoke and dust, and at the same time prevent hair, garbage, and dust from entering the interior of the body, causing damage to the fan and reducing its lifespan.

[0012] As a preferred technical solution of the present invention, the air outlet is used to discharge the purified clean gas into the room.

[0013] As a preferred technical solution of the present invention, the low-temperature plasma module realizes efficient sterilization and disinfection by releasing active particles such as high-energy electrons, ions, and free radicals to destroy the genetic material of bacteria and viruses. The low-temperature plasma module can decompose harmful gases such as benzene series and formaldehyde released by decoration materials and furniture into harmless small-molecule substances.

[0014] As a preferred technical solution of the present invention, the harmless small-molecule substances include carbon dioxide and water.

[0015] As a preferred technical solution of the present invention, the ozone adsorption module selects activated carbon as the adsorbent.

[0016] As a preferred technical solution of the present invention, the fan module is used to provide the power for air flow, so that air enters the body from the air inlet and is discharged from the air outlet after being purified by each module.

[0017] As a preferred technical solution of the present invention, the carbon dioxide adsorption module is used to adsorb carbon dioxide in the air to further improve the air purification effect.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention breaks through the limitation of single function and constructs a trinity solution of "purification - health - energy saving", providing innovative technical support for the medical, transportation, and construction fields.

[0019] Based on the low-temperature plasma technology, the present invention directly penetrates the cell membranes of bacteria and viruses and destroys their genetic materials by releasing high-energy electrons and hydroxyl radical active substances. Verified by experiments, the inactivation rates of common pathogens such as Escherichia coli and influenza virus exceed 90%, significantly reducing the risk of airborne infections in high-risk scenarios such as operating rooms and hospital waiting areas, and providing biosafety protection for crowded places.

[0020] The present invention adopts a dual-path chemical purification mechanism to address the pain points of decoration pollution: on the one hand, harmful gases such as formaldehyde and benzene series are decomposed into carbon dioxide and water by high-energy particles of the plasma; on the other hand, intermediate products are adsorbed by activated carbon and carbon dioxide adsorbents. Compared with the passive adsorption of traditional activated carbon, the use of the present invention can significantly improve the formaldehyde removal rate and there is no risk of secondary release, especially suitable for newly decorated residential houses and furniture store scenarios.

[0021] The present invention adds an ozone adsorption layer downstream of the traditional plasma module, and converts ozone into oxygen through redox reactions, and the outlet concentration is stably controlled within a safe range. It completely avoids the problems of eye stinging and respiratory tract damage caused by excessive ozone in traditional technologies.

[0022] The present invention breaks through the limitation of single pollutant treatment and realizes dual-path CO2 control of source and accumulation: grasping both the associated CO2 (carbon dioxide generated during the plasma degradation of formaldehyde pollutants) and the environmental accumulated CO2 (carbon dioxide released by human respiration and combustion). In closed spaces such as long-distance cockpits and meeting rooms, it reduces the problems of dizziness and decreased attention caused by excessive CO2 in people, thus achieving the reduction of accident risks and the improvement of work efficiency.

[0023] Through a four-stage collaborative purification system (filtration - decomposition - adsorption - circulation), the present invention disposes of particulate matter, chemical pollutants, biological pollutants, and CO2 simultaneously without the need for window ventilation. Compared with traditional air purification equipment and traditional ventilation solutions, it realizes the expansion of the pollutant disposal range and the improvement of energy-saving efficiency, conforms to the general trend of building energy conservation and global sustainable development, and has extremely high practical value and broad social significance. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall structure of the air purification device with low-temperature plasma coupling carbon dioxide adsorption provided by the present invention;

[0025] Figure 2 It is a schematic diagram of the air flow direction of the air purification device with low-temperature plasma coupling carbon dioxide adsorption provided by the present invention.

[0026] Markings in the figure:

[0027] 1. Air outlet; 2. Carbon dioxide adsorption module; 3. Ozone adsorption module; 4. Low-temperature plasma; 5. Support partition; 6. Fan; 7. Air inlet; 8. Pretreatment module. Specific embodiments

[0028] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention.

[0029] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention. It should be noted that, without conflict, the embodiments and the features and technical solutions in the embodiments of the present invention can be combined with each other. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] Embodiment 1: An air purification device coupling low-temperature plasma with carbon dioxide adsorption, comprising a body, an air inlet and an air outlet are provided on the body, and a pretreatment module, a fan module, a low-temperature plasma module, an ozone adsorption module and a carbon dioxide adsorption module are installed in the body; the air outlet is located at the top of the body, the air inlet is located around the body, and the carbon dioxide adsorption module, the ozone adsorption module, the low-temperature plasma module, the support partition and the fan module are arranged in sequence from top to bottom. Below the fan module, from outside to inside are the air inlet around the body and the pretreatment module; when the air purification device operates, the fan sucks air from the air inlets around, and after being purified by the pretreatment module, the low-temperature plasma module, the ozone adsorption module and the carbon dioxide adsorption module, clean air is discharged from the air outlet at the top.

[0031] A pretreatment module is provided at the air inlet part, and the pretreatment module selects a combination of HEPA filter paper and activated carbon as the filter layer. The pretreatment module can initially adsorb harmful gases, remove odors, purify smoke and dust, and at the same time prevent hair, garbage and dust from entering the interior of the body, causing damage to the fan and reducing its lifespan.

[0032] The air outlet is used to discharge the purified clean gas into the room. The low-temperature plasma module destroys the genetic material of bacteria and viruses by releasing active particles such as high-energy electrons, ions and free radicals to achieve high-efficiency sterilization and disinfection.

[0033] The low-temperature plasma module can decompose the benzene series and formaldehyde harmful gases released by decoration materials and furniture into harmless small-molecule substances. The harmless small-molecule substances include carbon dioxide and water, etc. The ozone adsorption module selects activated carbon as the adsorbent. The fan module is used to provide the power for air flow, so that air enters the body from the air inlet, and is discharged from the air outlet after being purified by each module. The carbon dioxide adsorption module is used to adsorb carbon dioxide in the air to further improve the air purification effect.

[0034] Example 2: An air purifier combining low-temperature plasma and a carbon dioxide adsorption module mainly includes a body, and an air inlet and an air outlet are provided on the body; a pretreatment module, a low-temperature plasma module, a fan module, an ozone adsorption module, and a carbon dioxide adsorption module are installed in the body. From top to bottom, they are the top of the body (air outlet), the carbon dioxide adsorption module, the ozone adsorption module, the low-temperature plasma module, and the support partition. Below the support partition, from outside to inside, they are the periphery of the body (air inlet) and the pretreatment module.

[0035] An air purification device coupling low-temperature plasma and carbon dioxide adsorption, the air inlet part is located around the body, and a pretreatment module is provided at the air inlet. The pretreatment module selects a combination of HEPA filter paper and activated carbon as the filter layer to initially adsorb harmful gases, remove odors, purify smoke and dust, and at the same time prevent hair, garbage, dust, etc. from entering the body and causing damage to the fan and reducing its lifespan. The air outlet is located at the top of the body to discharge the purified clean gas into the room.

[0036] The low-temperature plasma module can efficiently sterilize and disinfect by destroying the genetic material of bacteria and viruses through active particles such as high-energy electrons, ions, and free radicals, greatly reducing the risk of people being infected with diseases through air transmission; it can also decompose harmful gases such as benzene series and formaldehyde released by decoration materials, furniture, etc. into harmless small-molecule substances (such as carbon dioxide and water), effectively cleaning indoor decoration pollution and creating a healthy living and working environment for people.

[0037] The ozone adsorption module can select activated carbon as the adsorbent. When the air purification device coupling low-temperature plasma and carbon dioxide adsorption operates, the fan inhales air from the surrounding air inlets, and after being purified by the pretreatment module, the low-temperature plasma module, the ozone adsorption module, and the carbon dioxide adsorption module, discharges clean air from the top air outlet.

[0038] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific embodiments. Therefore, any modification or substitution of the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. An air purification device coupling low-temperature plasma and carbon dioxide adsorption, characterized in that, It includes a body, on which there are an air inlet and an air outlet. Inside the body, a pretreatment module, a fan module, a low-temperature plasma module, an ozone adsorption module, and a carbon dioxide adsorption module are installed. The air outlet is located at the top of the body, and the air inlet is located around the body. From top to bottom, there are arranged a carbon dioxide adsorption module, an ozone adsorption module, a low-temperature plasma module, a support partition, and a fan in sequence. Below the fan, from outside to inside, there are the air inlet around the body and the pretreatment module in sequence. When the air purification device operates, the fan sucks air from the air inlets around, and after being purified by the pretreatment module, the low-temperature plasma module, the ozone adsorption module, and the carbon dioxide adsorption module, clean air is discharged from the air outlet at the top.

2. The air purification device for coupling carbon dioxide adsorption with low-temperature plasma according to claim 1, characterized in that A pretreatment module is provided at the air inlet part, and the pretreatment module selects a combination of HEPA filter paper and activated carbon as the filter layer.

3. The air purification device for coupling low-temperature plasma with carbon dioxide adsorption according to claim 2, wherein The pretreatment module preliminarily adsorbs harmful gases, removes odors, purifies smoke and dust, and at the same time prevents hair, garbage, and dust from entering the interior of the body.

4. The air purification device for coupling low-temperature plasma with carbon dioxide adsorption according to claim 1, characterized in that, The air outlet is used to discharge the purified clean gas into the room.

5. The air purification device for coupling low-temperature plasma with carbon dioxide adsorption according to claim 1, wherein The low-temperature plasma module uses active particles such as high-energy electrons, ions, and free radicals to destroy the genetic material of bacteria and viruses for disinfection, and the low-temperature plasma module decomposes harmful gases such as formaldehyde and benzene series in the air into harmless small-molecule substances.

6. The air purification device for coupling carbon dioxide adsorption with low-temperature plasma according to claim 5, wherein The harmless small-molecule substances include carbon dioxide and water.

7. The air purification device for coupling low-temperature plasma with carbon dioxide adsorption according to claim 1, characterized in that, The ozone adsorption module selects activated carbon as the adsorbent.

8. The air purification device for coupling low-temperature plasma with carbon dioxide adsorption according to claim 1, wherein, The fan module is used to provide the power for air flow, so that air enters the body from the air inlet and is discharged from the air outlet after being purified by each module.

9. The air purification device for coupling low-temperature plasma with carbon dioxide adsorption according to claim 1, characterized in that The carbon dioxide adsorption module is used to adsorb the original carbon dioxide in the air and the carbon dioxide decomposed by the low-temperature plasma module.

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