Method for treating the air in a display cabinet and display cabinet for carrying out said method

Abstract

In a method for air treatment in a display cabinet for the storage and/or display of objects, whose walls, floor and roof structure more or less enclose the inside space of the display cabinet and in which a forced inflow of air from an air delivery system connected to the inside space ( 1 ) of the cabinet maintains a slight excess pressure compared with the air outside it, the said airflow passes through suitable dust or gas filtration means before entering the cabinet and its air humidity is adjusted and/or controlled by means of a cooling device. After filtration, the airflow passes into a container ( 2 ) holding a liquid ( 7 ), the said liquid being kept free from germs by suitable means. In this manner and in a simple way, a completely germ-free atmosphere is produced inside the display cabinet. A display cabinet for implementing the method has a corresponding structure.

1 . Method for the treatment of air in a cabinet for the storage and/or display of objects, whose walls, floor and roof structure more or less enclose the inside space of the cabinet and in which a forced inflow from an air delivery system connected to the inside space of the cabinet maintains a slight excess pressure compared with the air outside it, this airflow passing through suitable dust or gas filtration means before entering the cabinet and having its air humidity adjusted and/or controlled, wherein after filtration the inflowing air ( 5 ) passes into a container ( 2 ) holding a liquid ( 7 ) and a catalyser ( 8 ) is present in the liquid ( 7 ), by means of which the air is completely free from germs.  
   
   
       2 . Method according to  claim 1 , wherein the liquid ( 7 ) consists of water.  
   
   
       3 . Method according to claims  1 , wherein the liquid ( 7 ) contains an additive.  
   
   
       4 . Method according to  claim 1 , wherein the catalyser ( 8 ) consists of a wire grid made from a particular alloy.  
   
   
       5 . Method according to  claim 4 , wherein the wire grid is made as a mat and is held between two protective gratings ( 9 ) of at least the same size.  
   
   
       6 . Method according to  claim 1 , wherein the airflow ( 5 ) is passed over the surface of the liquid ( 7 ) in the container ( 2 )  
   
   
       7 . Method according to  claim 4 , wherein the airflow ( 5 ) is passed into a sponge ( 11 ) wetted by the liquid ( 7 ), which is enveloped by the wire grid.  
   
   
       8 . Method according to  claim 1 , wherein the airflow ( 5 ) passing into the container ( 2 ) consists of two parts, one part from the outside air and one part from the air inside the display cabinet.  
   
   
       9 . Method according to  claim 1 , wherein the germ-free air passes into a cooling/heating device ( 4 ), which serves to maintain a specified temperature and/or air humidity.  
   
   
       10 . Method according to  claim 1 , wherein the airflow ( 5 ) first passes into a cooling/heating device ( 4 ) which serves to maintain a specified temperature and/or air humidity, and is then freed from germs.  
   
   
       11 . Method according to  claim 10 , wherein the cooling/heating device ( 4 ) regulates the specified temperature and/or air humidity by means of a liquid, this liquid being identical to the liquid ( 7 ) of the catalyser ( 8 ).  
   
   
       12 . Display cabinet for implementing the method according to  claim 1 , whose walls, floor and roof structure more or less enclose the inside space of the display cabinet and in which a forced inflow of air from an air delivery system connected to the inside space of the cabinet maintains a slight excess pressure compared with the air outside it, this airflow passing through suitable dust or gas filtration means before entering the cabinet and having its air humidity adjusted and/or controlled, wherein after filtration the airflow ( 5 ) is passed into a container ( 2 ) holding a liquid ( 7 ) and in the liquid ( 7 ) there is a catalyser ( 8 ), by means of which the air subsequently passed to a cooling device is rendered completely free from germs.  
   
   
       13 . Display cabinet according to  claim 12 , wherein the liquid ( 7 ) consists of water and contains an additive.  
   
   
       14 . Display cabinet according to  claim 12 , wherein the liquid ( 7 ) contains a certain amount of hydrogen peroxide.  
   
   
       15 . Display cabinet according to  claim 12 , wherein the catalyser ( 8 ) consists of a wire grid made from a particular alloy.  
   
   
       16 . Display cabinet according to  claim 15 , wherein the wire grid is made as a mat and is held between two protective gratings ( 9 ) of at least the same size.  
   
   
       17 . Display cabinet according to  claim 15 , wherein a sponge ( 11 ) is enveloped A by the wire grid and the airflow ( 5 ) is passed through the sponge.  
   
   
       18 . Display cabinet according to  claim 12 , wherein the airflow ( 5 ) passing into the container ( 2 ) consists of two parts, one part from the outside air and one-pain from the air inside the display cabinet.