Abstract: The corrosion problems caused by the bad environment caused the continuous research and development of the anticorrosion technology. Nano-coating has wide application prospect and excellent performance. In this paper, the application of nanometer coating technology in air conditioner is proposed. The anticorrosive properties and antibacterial properties of new titanium dioxide and silver ion composite coatings for air conditioning heat exchangers were studied. Through the study of nano-coated technology, a feasible production process was obtained. The experiment of salt spray and anti-mould in the coating of nano-coated fins had good anti-salt corrosion resistance and antibacterial ability. The nanometer coating can be used in the air conditioner to improve the quality and life of air conditioning.

Key words: Nano, Titanium dioxide, Silver ions, Corrosion protection, The antibacterial