Conveyor Ware Washer

Abstract

Conveyor ware washer, comprising of a treatment device ( 70 ) for the treatment of sprayed final rinse liquid and/or post wash liquid, resp., so that the treated final rinse liquid and post wash liquid, resp. has the quality of potable water from the microbiological perspective and can be reused as final rinse liquid.

1 . A conveyor ware washer comprising at least one wash zone for spraying of wash liquid, at least one final rinse zone for spraying of final rinse liquid on wares, and a post-wash zone for spraying of post-wash liquid on wares between the wash zone and the at least one final rinse zone, a ware conveyor for moving wares through the wash zone, post-wash zone and final rinse zone; characterized by a treatment device for the treatment of sprayed final rinse liquid and sprayed post-wash liquid, so that the treated liquid is of potable quality of water in microbiological terms, whereby the treatment device is made for automatic gathering of sprayed final rinse liquid and sprayed post-wash liquid and for discharge of the treated liquid to the final rinse zone for renewed spraying as final rinse liquid or at least as a portion of final rinse liquid. 
   
   
       2 . A conveyor ware washer comprising at least one wash zone for spraying of wash liquid and at least one final rinse zone for spraying of final rinse liquid on wares; characterized by a treatment device for treatment of sprayed final rinse liquid, so that treated final rinse liquid is of potable quality of water in microbiological terms, whereby the treatment device is made for automatic gathering of sprayed final rinse liquid and for discharge of the treated final rinse liquid to the final rinse zone for renewed spraying as final rinse liquid or at least as part of final rinse liquid. 
   
   
       3 . The conveyor ware washer of  claim 2 , characterized in that the treatment device comprises a micro-filtration device or an ultra-filtration device for filtration of the sprayed final rinse liquid of  claim 2 . 
   
   
       4 . The conveyor ware washer of  claim 3 , characterized in that the micro-filtration device or the ultra-filtration device comprises a transverse flow filter for providing micro-filtration or ultra-filtration. 
   
   
       5 . The conveyor ware washer of  claim 4 , characterized in that the transverse flow filter comprises at least one primary chamber and at least one secondary chamber, which are separated from each other with at least one micro-filtration element or at least one ultra filtration element, the primary chamber is integrated in a primary chamber liquid circuit by which sprayed liquid to be treated is supplied to the primary chamber, and the secondary chamber gathers filtered liquid. 
   
   
       6 . The conveyor ware washer of  claim 3 , characterized in that the treatment device comprises an ozone-adding device for feeding of ozone or an ozone-air mixture into the filtered liquid. 
   
   
       7 . The conveyor ware washer of  claim 2 , characterized in that between the wash zone and the final rinse zone a post-wash zone with post-wash nozzles is located for post washing of wares with post wash liquid in the form of pre-used final rinse liquid, a post-wash tank is provided for gathering final rinse liquid which was sprayed in the final rinse zone and for gathering at least a part of post-wash liquid sprayed in the post-wash zone, that the treatment device is connected to the post-wash tank in order to take therefrom a mixture of the sprayed final rinse liquid and of the sprayed post-wash liquid, for treating it so that it becomes treated final rinse liquid which is of a potable quality of water in microbiological terms.