Photocatalytic technology 1) Semiconductor technology is catalytic TiO2 or CdS, WO3, ZnO, ZnS, Fe2O3, SnO2 as the typical semiconductor photocatalyst. From having a redox catalytic properties of the semiconductor, optical and electrical work while at the same time, the light irradiation catalyst layer on the semiconductor, electrons are potential can transition to the conduction band, and the role of the gap by the electric force is absorbed wholesale central air conditioning air disinfection device, reducing the migration of voids. Optical and electrical separation through several tests to verify: electric field plates coated with a semiconductor catalyst, the electric field is presented loose table after cleaning dust with a vacuum cleaner or an electric field into a neutral solution, 1min out, field surface dust quickly dissolved in the aqueous solution, washed clean; without catalytic coated semiconductor field, the role of static electricity by the mirror, dust firmly attached to the electric field of central air conditioning air disinfection device parameters, it is difficult to clean. Combined optical and electrical separation principle of innovation, break the electrostatic field for many years confused cleaning difficult problem, but also realize the semiconductor surface hole - electron pairs of composite and separation, greatly improves the catalytic effect of the semiconductor. It is evident from the cleaning process, for the treatment and recycling of organic pollutants are potentially effective, technological innovation, promote the development of technological progress and industrial technology, purification of organic pollutants. Central air conditioning --- Wei, an air purifier disinfection recent Health Ministry data show that hospital central air conditioning air disinfection equipment, China has more than 5 million use central air conditioning, and the annual increase rate of 10%. Ministry of Health focus on the use of central air conditioning inspection found excessive bacteria, and some use none of the 20-year pipeline cleaning. Therefore, the Ministry of Health issued a public places, air ventilation system health management approach, since March 1, 2006 implementation. Were not considered for the air purification market and central air conditioning has been used, when the cleaning process is wrong, that would result from the pipeline there are a lot of bacteria and viruses, and became the source of transmission of various infectious diseases. In order to prevent viruses, bacteria infection, the company developed a central air conditioning --- Wei, an air purifier disinfection, install the product in the delivery of central air conditioning, can effectively remove "viruses, bacteria, dust and harmful gases in the return air duct "and Legionella, not only to achieve air purification, but the Ministry of Health," Disinfection technical specifications "requirement. The products and supporting the use of central air conditioning systems. Not only greatly extend the central air-conditioning efficiency filter life, and can effectively reduce the central air conditioning running costs and maintenance expenses. Central air conditioning is the ideal accessory indoor air disinfection and purification devices.