Air conditioning apparatus having sterilization function

Abstract

This air conditioning apparatus having sterilization function which can maintain the sterilization function for a long time period. The air conditioning apparatus having a sterilization function comprises a sterilizing coating layer formed on the surface of a component, wherein the sterilizing coating layer has copper or copper alloy particles dispersed in a resin matrix. The coating layer is formed by dispersing fine copper or copper alloy particles having a maximum particle size of about 2.5 μm or less into an epoxy or epoxy-acryl synthetic resin, and covered on the surface of a component of the air conditioning apparatus such as a heat exchanger. The maximum content of the copper or copper alloy particles in the coating layer is preferably about 18 to 31 wt %. The thickness of the coating layer is preferably less than the maximum size of the particle.

1 . An air conditioning apparatus having sterilization function comprising a sterilizing coating layer formed on the surface of a component of the air conditioning apparatus, wherein the sterilizing coating layer has copper or copper alloy particles dispersed in a resin matrix.  
   
   
       2 . The air conditioning apparatus according to  claim 1 , wherein the particles of copper or copper alloy contained in the coating layer are fine powder particles having a maximum diameter of about 2.5 μm or less, and the content of the particles in the layer is about 13 to 51 wt %.  
   
   
       3 . The air conditioning apparatus according to  claim 2 , wherein the coating layer is formed on at least one member which require heat conduction at a thickness of about 2 μm or less.  
   
   
       4 . The air conditioning apparatus according to  claim 1 , wherein the coating layer has a thickness less than the maximum diameter of the particles of copper or copper alloy.  
   
   
       5 . The air conditioning apparatus according to  claim 2 , wherein the coating layer has a thickness less than the maximum diameter of the particles of copper or copper alloy.  
   
   
       6 . The air conditioning apparatus according to  claim 3 , wherein the coating layer has a thickness less than the maximum diameter of the particles of copper or copper alloy.  
   
   
       7 . The air conditioning apparatus according to  claim 1 , wherein a pretreatment layer is interposed between the coating layer and the component surface to enhance the bonding strength of the coating layer.  
   
   
       8 . The air conditioning apparatus according to  claim 2 , wherein a pretreatment layer is interposed between the coating layer and the component surface to enhance the bonding strength of the coating layer.  
   
   
       9 . The air conditioning apparatus according to  claim 3 , wherein a pretreatment layer is interposed between the coating layer and the component surface to enhance the bonding strength of the coating layer.