Air purifiers release carbon dioxide, don't they?

Air purifiers cannot release carbon dioxide.

Air purifiers, also known as "air purifiers", air fresheners and purifiers, refer to products that can adsorb, decompose or transform various air pollutants (generally including decoration pollution such as PM2.5, dust, pollen, odor, formaldehyde, bacteria and allergens). ) and effectively improve air cleanliness, mainly divided into household, commercial, industrial and construction.

There are many different technologies and media in the air purifier, which can provide users with clean and safe air. Commonly used air purification technologies include: adsorption technology, negative (positive) ion technology, catalysis technology, photocatalyst technology, super-structure photomineralization technology, HEPA high-efficiency filtration technology, electrostatic dust removal technology and so on. Material technology mainly includes: photocatalyst, activated carbon, synthetic fiber, high-efficiency materials, negative ion generator and so on. The existing air purifiers are mostly compound, that is, multiple purification technologies and material media are adopted at the same time.

According to the working principle of air purifier, it can be divided into three types: passive type, active type and active-passive mixed type.

According to the technology of air purifier to remove particulate matter in the air, there are mainly mechanical filter screen, electrostatic electret filter screen, high voltage electrostatic dust collection, negative ion and plasma method.

mechanical filtration

Generally, the following four methods are mainly used to capture particles: direct interception, inertial collision, Brownian diffusion mechanism and shielding effect. Good collection effect on fine particles, but large wind resistance. In order to obtain high purification efficiency, the resistance of the filter screen is large, and the filter screen needs to be compact, which leads to a decrease in service life and needs to be replaced regularly.

High voltage electrostatic dust collection

The dust collection method using high-voltage electrostatic field to ionize gas to make dust particles charged and adsorbed on the electrode has small wind resistance, but the collection effect of larger particles and fibers is poor, which will cause discharge, and cleaning is troublesome and time-consuming, which is easy to produce ozone and form secondary pollution.

"High-voltage electrostatic dust removal" is a way to ensure air flow and absorb fine particles. This is a way to charge the particles by loading high voltage before they pass through the filter element, so that the particles are "easily adsorbed" to the filter element under the action of electricity.

The high-voltage electrostatic dust collection part originally applied high voltage to two electrodes and charged the passing dust when the two electrodes discharged. Most dust is neutral or weakly charged, so the filter element can only filter dust larger than the mesh. However, reducing the mesh of the filter element will cause blockage. High-voltage electrostatic precipitation can make dust charged, and under the action of electricity, it will be adsorbed on the specially treated permanently charged filter element. Therefore, even if the mesh of the filter element is too large (too thick), it can really catch dust.

Electrostatic electret filter screen

purifier

Compared with mechanical filtration, it can only effectively remove particles above 10 micron, but when the particle size is reduced to 5 micron, 2 micron or even sub-micron, the efficient mechanical filtration system will become more expensive and the wind resistance will increase significantly. By filtering with electrostatic electret air filter material, high collection efficiency can be achieved under the condition of low energy consumption, and at the same time, it has the advantages of electrostatic dust removal and small wind resistance, but there is no need to externally connect tens of thousands of volts, so ozone will not be generated, and it is convenient to discard because it is made of polypropylene.

Electrostatic precipitation

It can filter dust, smoke and bacteria smaller than cells, and prevent diseases such as lung disease, lung cancer and liver cancer. The most harmful thing in the air is dust smaller than 2.5 microns, because it can penetrate cells and enter the blood. Ordinary purifiers use filter paper to filter dust in the air, which is easy to block the filter holes. Dust not only has no sterilization effect, but also easily causes secondary pollution.

Electrostatic sterilization

Using the high-voltage electrostatic field of about 60 00 volts, bacteria and viruses attached to dust can be instantly and completely killed, and diseases such as colds and infectious diseases can be prevented. Its bactericidal mechanism is to destroy four polypeptide chains of bacterial capsid protein and damage RNA.

Natural air purifier

It has been proved that the crystal gypsum lamp is a natural air purifier, which has environmental protection functions such as volatilizing negative ions, adsorbing impurities in the air and shielding harmful rays from electrical appliances. What is unique is that during the day, it presents a completely natural stone texture, which is simple, simple and heavy, emitting a strong natural atmosphere and a simple and mysterious style; At night, it becomes a magician who creates a warm atmosphere, pure white crystal gypsum mine, soft and quiet lighting; Orange crystal gypsum lamp, red light has become the host's emotional appeal, lit up, romantic atmosphere around.

It should be noted that most brands of purifiers exaggerate their functions when promoting sales, and some purifiers claim that they can "effectively capture" dozens of kinds of particulate matter. Faced with a wide variety of market brands and complex functions, consumers have a feeling of seeing flowers in the fog. To this end, experts remind consumers that they can choose products with guaranteed brands when they can't distinguish the functions of products, or choose according to the sales volume of products.

An air purifier is defined as "a device for separating and removing one or more pollutants from the air" in the relevant standards of national air purifiers. A device with a certain ability to remove pollutants from the air. It mainly refers to the single air purifier used indoors and the modular air purifier in the central air conditioning ventilation system.

According to the purification requirements, air purifiers can be divided into:

(1) purification type. If it is located in an area with moderate indoor humidity, or the requirements for air quality are not too high, it is enough to choose a purified air purifier.

(2) Humidification and purification type. If you are located in a dry area, the indoor air is often dried by air conditioners, or the air quality is required, it will be the most suitable choice to buy an air purifier with humidification and purification function. LG's future celebrity air purifier also has the technology of natural humidification, which uses scientific and technological means to vaporize water, leaves harmful substances in the tray for elimination through the rotation of windmill or disc filter, and only discharges ultra-fine and clean water molecules into the air.

(3) intelligence. If you like automatic operation, intelligent monitoring of air quality, or showing noble taste, or giving gifts needs to be more decent, then buying an intelligent air purifier is the best choice.

(4) vehicle-mounted type. If it is used to purify the air inside the car, it needs to purify the odor inside the car.

LG future celebrity air purifier

Automobile formaldehyde is polluted in the car, which can be put in the air purifier in the car, so car air purifier is the best choice.

(5) desktop type. That is, an air purifier placed on the desktop to purify the air in a certain range around the desktop and protect the health of people near the desktop. If you often sit in front of a computer, desk or desk, but the indoor area is not small, or in a public place, it is not cost-effective or fashionable to buy a large air purifier yourself, then the desktop air purifier is a better choice.

(6) Dazhong. Mainly suitable for indoor occasions with large area, such as indoor halls, senior bank offices, senior administrative offices, important lecture halls, senior hotels, hospitals, beauty salons, kindergartens and other occasions.

(7) Type of central air conditioning system. It is mainly suitable for installing central air conditioning, or a single room with ceiling, or multiple rooms are cleaned together.