| abstract |
The present invention relates to a method and an apparatus for manufacturing a heat exchanging fin unit and a housing unit in an air handling system with antimicrobial function, the aluminum coil fin unit and the housing unit being coated with metal nano particles including nano silver particles to have antibiosis, sterilization and antimicrobial functions. n According to a preferred embodiment, the metal nano particles are mixed with a hydrophilic paint and a preventing paint to be coated on the surface of the heat exchanging aluminum coil fin unit. The nano particle is one or its mixture selected from the group consisting of Pt, Au, Ag, Cu and TiO 2 and has a density of 1,000 ppm to 10,000 ppm and a size of 20 nm or less. Preferably, the nano particle has a size of 1 to 2 nm and a density of 100 ppm to 200 ppm to provide a high sterilization effect. |