US Patent 7481231 Ware washing installation

Ware washing installation, containing at least one conveyor-type ware washer. The conveyor-type ware washer contains at least one wash zone (8, 10, 12) with spray nozzles (20, 28), a first rinse zone (14) with spray nozzles (21, 29) and a final rinse zone (16) with spray nozzles (23, 31). Additional spray nozzles (22, 30) are arranged between the spray nozzles (21, 29) of the first rinse zone (14) and the spray nozzles (23, 31) of the final rinse zone (16). Rinse water which is pre-used and then filtered through a microfiltration device or a ultrafiltration device (58) is supplied to the additional spray nozzles (22, 30).