Patent ID: 8088337

Claim:
An ozone generator comprising: at least one tubular external electrode ( 4 ), at least one internal electrode ( 7 ) comprising a plurality of tubular metal segments ( 8 ) which are closed, at least partially, at each end and externally coated with a ceramic coating ( 9 ), these tubular segments being positioned one behind the other, mechanically decoupled and electrically linked, means ( 10 ) for holding the tubular segments relative to the external electrode to form an annular discharging interstice (I) between an external surface of the ceramic coating ( 9 ) and an internal surface of the external electrode ( 4 ), a rod ( 11 ) passing axially through the tubular segments ( 8 ) and provided at its ends with means ( 12 , 13 ) of axially clamping the tubular segments to each other, to establish electrical contact, means ( 14 ) for connecting all the electrodes to an alternating current source, and means ( 20 , 21 ) for circulating a gas containing oxygen in the interstices, characterized in that each tubular metal segment ( 8 ) is provided, at each end, with an externally convex end plate ( 8 a , 8 b ), roughly in the form of a spherical cap, comprising a central area ( 18 ) for electrical contact, and in that the ceramic coating ( 9 ) comprises at least two layers ( 9 a , 9 b ) deposited in succession.