Generally speaking, the air purification equipment consists of four parts: shell, purification, blower and electric control. The main function is purification and fan parts. At present, there are dozens of air purification equipment for purifying air based on different principles, including mechanical, electrostatic, negative oxygen, physical adsorption, chemisorption, or combination of two or more than two forms.
1. Mechanical air purification equipment. Porous materials such as non-woven fabrics, filter paper and fibrous materials are used to intercept particulate matter in the airstream and purify the air. It is mainly composed of filter dust collecting device and fan and other components. It is characterized by high dust removal efficiency, large dust volume and long service life. The concentration of particles in the air in the general family and office is very low, and the filter material is not changed for a long time.
Two, electrostatic air purification equipment. The purification equipment makes use of the principle of anode corona discharge to make the particles in the air flow positively charged, and the charged particles are collected on the dust collecting device to purify the air. It consists of ionization device, dust collector, fan and power supply.
Three, negative oxygen ion air purification equipment. A strong electric field is generated by artificial methods, so that the neutral molecules in the air lose an outer layer of electrons. The molecule becomes a basic positive ion. The lost electrons combine with another neutral molecule to form the basic anion, and then combine with some neutral molecules to form negative ions. Studies have shown that negative oxygen ions are beneficial to human body and make people feel fresh air.
Four, photocatalytic air purification equipment. The catalyst was plated on a specific carrier and irradiated with a specific wavelength ultraviolet light source. Through the action of the fan, the air containing harmful gas is passed through the catalyst at a specific speed, and the catalyst on the carrier has a chemical reaction with the harmful gas under ultraviolet radiation to achieve the purpose of purification.
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