Ventilator wheel or fan wheel with antibacterial coating

Abstract

The present invention relates to a ventilator wheel or fan wheel composed of a hub and blades which are fastened in said hub. The hub and/or the blades are at least partially provided, on the surface thereof, with an antibacterial agent.

1 . A ventilator wheel or fan wheel comprising a hub and blades fastened therein, wherein at least one of the hub and the blades are provided on their surface at least partially with an antibacterially effective active ingredient. 
     
     
         2 . The ventilator wheel or fan wheel as claimed in  claim 1 , wherein the active ingredient contains nanoscale aggregated molecules of oligodynamically active metal complexes. 
     
     
         3 . The ventilator wheel or fan wheel as claimed in  claim 2 , wherein metals of the oligodynamically active metal complexes are selected from the group consisting of silver, copper, molybdenum and vanadium. 
     
     
         4 . The ventilator wheel or fan wheel as claimed in  claim 2 , wherein monovalent or divalent silver or copper is present in the oligodynamically active metal complexes as a central atom as well as ligands of at least one hydroxycarboxylic acid. 
     
     
         5 . The ventilator wheel or fan wheel as claimed in  claim 4 , wherein the hydroxycarboxylic acid is selected from the group consisting of 2-hydroxypropanoic acid (lactic acid), 2-hydroxypropane-1,2,3-tricarboxylic acid (citric acid) or 2,3-dihydroxybutanedioic acid (tartaric acid). 
     
     
         6 . The ventilator wheel or fan wheel as claimed in  claim 2 , wherein monovalent or divalent silver or copper is present in the oligodynamically active metal complexes as a central atom as well as one or both of ammine ligands and aqua-ammine ligands. 
     
     
         7 . The ventilator wheel or fan wheel as claimed in  claim 6 , wherein the oligodynamically active metal complexes with the ammine ligands have the empirical formula [Ag(RNH 2 ) 2 ] + , R being hydrogen or a methyl or ethyl group. 
     
     
         8 . The ventilator wheel or fan wheel as claimed in  claim 1 , wherein the active ingredient contains silver as well as copper, each of which is present in ionic or bound form in a metal complex. 
     
     
         9 . The ventilator wheel or fan wheel as claimed in  claim 4 , wherein a bis(thiosulfato)argentate is formed as a ligand by monovalent or divalent silver. 
     
     
         10 . The ventilator wheel or fan wheel as claimed in any  claim 1 , wherein the active ingredient contains silver sulfadiazine. 
     
     
         11 . The ventilator wheel or fan wheel as claimed in  claim 1 , wherein the active ingredient contains a hydroxyl group-containing compound. 
     
     
         12 . The ventilator wheel or fan wheel as claimed in  claim 1 , wherein the active ingredient is insoluble in water. 
     
     
         13 . The ventilator wheel or fan wheel as claimed in  claim 2 , wherein the active ingredient includes a ceramic carrier, the ceramic carrier being aluminum silicate with silver, copper or other oligodynamically effective metal-containing ions bound therein. 
     
     
         14 . The ventilator wheel or fan wheel as claimed in  claim 1 , wherein the active ingredient contains particles having a size in the range from a monomolecular dimension up to an average particle diameter of 1000 nm. 
     
     
         15 . The ventilator wheel or fan wheel as claimed in  claim 14 , wherein an average particle diameter of the active ingredient is in the range of 1 nm to 40 nm. 
     
     
         16 . The ventilator wheel or fan wheel as claimed in  claim 2 , wherein an average particle diameter of the active ingredient is in the range of 15 nm to 30 nm. 
     
     
         17 . The ventilator wheel or fan wheel as claimed in  claim 2 , wherein the oligodynamically active metal complexes on the surface of the hub and/or blades have a metal concentration that is in the range of 0.05 to 15% by mass. 
     
     
         18 . The ventilator wheel or fan wheel as claimed in  claim 17 , wherein the metal concentration of the oligodynamically active metal complexes on the surface of the hub and/or blades have a metal concentration that is in the range of 0.2 to 15% by mass. 
     
     
         19 . The ventilator wheel or fan wheel as claimed in  claim 1 , wherein efficacy of the active ingredient gradually increases as a result of environmental effects, including as a result of the action of light or acids on the surface of the hub or blades. 
     
     
         20 . The ventilator wheel or fan wheel as claimed in  claim 19 , wherein the active ingredient is contained in a surface coating on at least one of the hub and blade. 
     
     
         21 . The ventilator wheel or fan wheel as claimed in  claim 20 , wherein the surface coating of the hub or blade is one a spray coat, a paint coat or a film. 
     
     
         22 . The ventilator wheel or fan wheel as claimed in  claim 1 , wherein the active ingredient is mixed into a manufacturing material of the ventilator wheel or fan wheel. 
     
     
         23 . A ventilator wheel or fan wheel as claimed in  claim 1 , incorporated within a housing, having a safety grid, motor mounting and an electric motor driving the ventilator wheel or fan wheel. 
     
     
         24 . The ventilator wheel or fan wheel as claimed in  claim 23 , wherein the housing has an antibacterial active ingredient on its surface. 
     
     
         25 . The ventilator wheel or fan wheel as claimed in  claim 24 , where on their surface at least one of the motor mounting safety grid of the housing have an antibacterial active ingredient on at least air conveying sections thereof. 
     
     
         26 . The ventilator wheel or fan wheel as claimed in  claim 25 , wherein the active ingredient contains nanoscale aggregated molecules of oligodynamically active metal complexes. 
     
     
         27 . The ventilator wheel or fan wheel as claimed in  claim 26 , wherein the antibacterial active ingredient is contained in a surface coating being one of a paint coat, a spray coat or a film. 
     
     
         28 . The ventilator wheel or fan wheel as claimed in  claim 26 , wherein the antibacterial active ingredient is mixed into a manufacturing material of the ventilator wheel or fan wheel.