Air purifier application object

Air purifier application object
I. Applicable places:

1, just renovated or renovated home.

2. There are homes for the elderly, children, pregnant women and newborns.

3, have asthma, allergic rhinitis and pollen allergy personnel’s home.

4. Keep pets and livestock homes.

5. Homes that are more closed or affected by second-hand smoke.

6, hotels, public places.

7. The residence of people who are willing to live in high quality life.

8, hospitals, reduce the infection, stop the spread of disease.

Second, the air purifier applies to the crowd:

1, pregnant women: pregnant women in the air pollution in the indoor will feel general malaise, dizziness, sweating, dry tongue, chest tightness, vomiting and other symptoms, have adverse effects on the development of the fetus. The risk of heart disease is three times that of a pregnant woman who breathes fresh air.

2. Children: The child’s body is developing, the immune system is relatively fragile, and it is vulnerable to indoor air pollution, resulting in decreased immunity, slow physical development, induced blood diseases, increased incidence of asthma in children, and greatly increased children’s intelligence. reduce.

3, office family: in a high-end office building to work when an enviable career. However, in a confined environment with poor air quality, it can easily lead to dizziness, chest tightness, fatigue, emotional ups and downs and other symptoms, affecting work efficiency, causing various diseases, and severe cases can cause cancer.

4, the elderly: old age, physical function decline, often a variety of chronic diseases ridden. Air pollution not only causes respiratory diseases such as tracheitis, pharyngitis, and pneumonia in the elderly. It can also induce hypertension, heart disease, cerebral hemorrhage and other cardiovascular diseases.

5. Patients with respiratory diseases: Living in polluted air for a long time can cause decreased respiratory function and increased respiratory symptoms, especially rhinitis, chronic bronchitis, bronchial asthma, and emphysema. Aids and cures the healing effect by breathing pure air.

6, the driver: car oxygen, car exhaust pollution.

Folding works
The air purifier is mainly composed of a motor, a fan, and an air filter system. The working principle is as follows: the motor and the fan in the machine cause the indoor air to circulate, and the contaminated air passes through the air filter in the machine and removes various contaminants. Or adsorption, the air is continuously ionized, resulting in a large number of negative ions, sent by the micro-fan, the formation of negative ion flow, to achieve the purpose of cleaning and purifying the air.

Passive adsorption filter purification principle (filter purification)

The main principle of the passive air purifier is that the air is pumped into the machine by a fan, and the air is filtered through the built-in filter, which can mainly play the role of filtering dust, odor, toxic gases and killing some bacteria. The filter is mainly divided into: particulate filter and organic filter. Particle filter Air purifier is divided into coarse filter and fine particle filter.

The quality of the fan and the filter of this type of product determines the effect of air purification. The location of the machine and the layout of the room will also affect the purifying effect.

Active purification principle (without filter type)

The fundamental difference between the principle of active air purifier and the principle of passive air purification is that the active air purifier is free from the limitations of the fan and the filter, and is not passively waiting for the indoor air to be pumped into the purifier for filtration and purification. Instead, it effectively and actively releases the sterilizing and sterilizing factors into the air, and through the characteristics that the air will diffuse, it reaches all corners of the room to clean the air without dead ends.

The technologies for decontaminating sterilizing factors on the market include silver ion technology, negative ion technology, low-temperature plasma technology, photocatalyst technology, and net ion group ion technology. The biggest defect of this type of product is the problem of excessive ozone release.

Double purification (active purification + passive purification)

This type of purifier actually combines the passive purification technology with the active purification technology.

Folding application
Air purifiers are used in the home, medical, and industrial fields. Home air purifiers are the main products in the home market. The main function is to remove particles in the air, including allergens, indoor PM2.5, etc. At the same time, it can also solve the indoor, underground space, and indoor volatile organic compounds air pollution problems caused by decoration or other reasons. Due to the persistence and uncertainty of the release of air pollutants in relatively closed spaces, the use of air purifiers to purify indoor air is an internationally recognized method of improving indoor air quality.

Folding purification technology
Folding filter technology
HEPA filter

HEPA is one of the hottest technologies used in air purification. The standard HEPA filter can absorb 99.7% of the 0.3 micron size aerosol (0.3 micron is the most difficult to filter size), but its wind resistance is also relatively large, and is rarely used in air purifiers. The actual air purifier Manufacturers claim that HEPA is not really HEPA. It has lower filtration efficiency than HEPA, and its wind resistance is relatively low. Whether it is true HEPA or advertised HEPA is to make the intake air fresher and cleaner. The filter absorbs chemical fumes, bacteria, dust particles and pollen. After being filtered by the air purifier, the filter will not have these contaminants in the air.

The advantage of HEPA filter is that it is effective and safe. It is the most important technology to remove airborne particulate contaminants, but the disadvantage is that it can only filter out suspended particles and can not filter out harmful gases. HEPA air cleaners must have a good airtight design, otherwise the air will bypass the filter and lose its filtering effect.

Electrostatic electret filter technology

The use of electrostatically loaded nonwovens to collect dust is an upgraded HEPA technology. The advantages are low wind resistance, high efficiency, high dust holding capacity, and the most important is safety. Relying on the market’s “Highly Efficient Electrostatic Air Filter”, it adopts breakthrough static-carrying filter media to effectively block more than 0.1 micron airborne particulate contaminants such as dust, dander, pollen, bacteria, etc. Impedance ensures energy savings. In addition, the deep dust-load design ensures longer life. As of 2013, it has been widely used in home and car air conditioners (such as the best-selling models of well-known brands like SAIC, Volkswagen, and GM) as well as some commercial construction fields (such as the Bird’s Nest, Beijing Hotel, and the Capital Airport Phase III).

Activated carbon filter

Air purification activated carbon is an internationally recognized high-efficiency adsorption material. It was applied to gas masks as early as in the “war”. Activated carbon is widely used for air purification in automobiles or indoors. Activated carbon is a porous carbonaceous material. Its well-developed pore structure makes it have a large surface area, so it is easy to fully contact with toxic and harmful gases in the air. The strong adsorption force field around the activated carbon pores will be immediately toxic. Gas molecules are sucked into the pores, and activated carbon is polymerized into a honeycomb block by activated carbon core filter technology. Compared to conventional activated carbon filters, the specific surface area is expanded by a factor of 2, and the air contact area is enlarged by 20 times. The net drag is reduced by a factor of 1.5 and it is also loaded with cold catalyst technology for the catalytic decomposition of toxic gases such as formaldehyde. Therefore, activated carbon has a strong adsorption capacity and is a major technology for removing gaseous pollutants. Activated carbon adsorption technology is mainly divided into two categories: physical adsorption and chemical adsorption.

Physical adsorption is mainly for macromolecular organic gases (such as benzene and other TVOCs) adsorbing these macromolecular contaminants through the pore structure of activated carbon itself. Chemisorption is mainly targeted at some small-molecule gaseous pollutants such as formaldehyde (hydrogen sulfide, nitrogen oxides, etc.), because the small molecule gas is easily separated again after adsorption to form secondary pollution, so the activated carbon must be chemically treated so that The adsorbed gas reacts with the chemical components to achieve the adsorption effect.

Folding dust collection technology
The principle of high-voltage electrostatic adsorption is used to remove particulate contaminants in the air, such as dust, soot, pollen, cigarettes, and kitchen fumes. The disadvantage of this technique is that it is easy to produce ozone, and it is effective only for large particle gases such as particles. The disadvantage is the need to pay attention to electrical safety issues (high pressure sometimes reaches tens of thousands of volts), cleaning difficulties, and easy to produce ozone, must be properly designed so that ozone emissions below safe concentrations.

Ozone can be bactericidal. It can also kill human white blood cells while killing some virus bacteria, which may lead to canceration. Therefore, it is generally not used for household air purification products. Ozone factor is mainly used to sterilize air. Ozone is a world-recognized and highly effective sterilization and detoxification oxidant. It can efficiently decompose various decoration pollutants and quickly kill various viruses and bacteria. Can meet the newly renovated and staged special static treatment, but because of the strong oxidation of ozone, it will cause harm to people and accelerate the aging of the surface of the object, it needs to be reminded that this treatment method requires personnel to avoid, regular processing for 30 minutes After the automatic reduction to oxygen, it is a green oxidation decomposer without any chemical residue.

Ultraviolet light is sterilized using UV lamps inside the machine, but it is also prone to produce too much ozone. To achieve an effective sterilization function, it is necessary to ensure a certain irradiation time, and the air purifier generally has a large wind speed, so the ultraviolet sterilizing ability is limited, and the human body cannot receive ultraviolet radiation for a long time, and its sealing should be strict.

Folding physical technology
Photocatalyst is a general term for photo-semiconductor materials with photocatalytic function represented by nano-sized titanium dioxide. It is coated on the surface of a substrate, and under the action of light, it produces a catalytic degradation function and can degrade harmful and harmful gases in the air. The photocatalytic air purification device with an ultraviolet light source has a purification efficiency of 3% (calculated based on the difference in pollutant concentration between the inlet and outlet of the device), and the best one does not reach 5%. Therefore, its purification efficiency is very low, and related studies show that in the photocatalytic process, highly toxic intermediates are produced.

Anion and plasma methods

The particles in the air are charged, coalesce to form larger particles and settle, but the particles are not actually removed, but are only attached to the nearby surface, which easily leads to dust again. High-pressure ion technology produces ozone and other by-products during the work process.