A dishwashing machine is used for pre-rinse operation of soiled dishes. A cavity is configured and arranged to contain the soiled dishes. A nozzle is proximate the cavity and is in fluid communication with the cavity. An accumulator pan accumulates wash and rinse water including cleaning chemicals used in a previous cycle of the dishwashing machine. A fluid passageway interconnects the nozzle and the accumulator pan. A pump directs the accumulated wash and rinse water from the accumulator pan to the nozzle via the fluid passageway for pre-rinse operation of the soiled dishes in the cavity, and the nozzle directs the accumulated wash and rinse water into the cavity with the soiled dishes to assist in removing soil from the soiled dishes prior to a wash cycle of the dishwashing machine. The wash cycle utilizes fresh wash water.

A method of washing dishes in an automated dishwasher utilizing a high velocity sprayer and high velocity spray phase for forcibly spraying water from concavities on washed dishes or utensils in which liquid can puddle in the cavities of the dishes or utensils during previous washing or rinsing cycles.

A method and apparatus for cleaning washware, in particular dishes, is provided. In the process, the washware is subjected to at least one wash process in which adhering dirt is at least largely removed. The washware is then subjected to a final-washing process which has at least two substeps. The washware is acted on by a first rinse liquid in a first substep, with the first rinse liquid containing a disinfectant. The washware is acted on by a second rinse liquid in a subsequent second substep, with the second rinse liquid comprising at least one permeate which is produced by reverse osmosis.

A conveyor ware washer (1), having a conveying device for conveying wash ware through treatment zones, has at least two wash zones (11, 12, 13), arranged one after the other and at least one final rinse zone (14) arranged downstream of the wash zones. An exhaust air system (20) removes exhaust air from the conveyor ware washer. The wash zone which is arranged closer to the final rinse zone has a heating device (40) for heating the wash liquid, which is to be sprayed in the relevant wash zone, to a minimum process temperature. A heat pump system transmits at least part of the thermal energy of the exhaust air, which has been removed or is to be removed from the conveyor ware washer, as useful heat to the wash liquid of the wash zone which is arranged further away from the at least one final rinse zone.

The present application relates to a system for dispensing a detergent solution from a solid detergent into a dishwasher said dishwasher comprising a washing chamber and being capable of performing cleaning cycles each including washing and rinsing periods; the system including a dispenser for dissolving solid detergent blocks and dispensing detergent solution, wherein the dispenser is configured to accommodate solid detergent, to be removably retrofittable into the dishwasher, and, to allow continuous release of all detergent solution as it is formed. In various applications the system may include a battery-powered control unit and a conductivity sensor, configured to measure the conductivity of the washing liquid and to provide the measured conductivity value to the control unit, said control unit is configured to process the conductivity value and to produce a signal.

A method for treating dishware in a domestic automatic dishwashing appliance is provided. The method uses order of addition of chemistry into the washing zone of the domestic automatic dishwashing appliance.

Various examples are directed to systems and methods for dishwasher automatic prescrapping. A method includes monitoring a dishwasher to sense placement of dishware within the dishwasher. Upon sensing placement of the dishware, the method includes circulating, using wash arms of the dishwasher, wash water over the dishware. Using a collection tray, the wash water and soil are collected from the dishware. The collection tray includes a slope configured to direct the wash water and the soil to an external separator. The method further includes automatically separating, within the external separator, the soil from the wash water. The external separator provides removal access of the separated soil. The method also includes directing, by the external separator, the separated wash water to a wash sump tank for recirculation in the dishwasher for subsequent wash cycles.

The present application relates to a system for dispensing a detergent solution from a solid detergent into a dishwasher said dishwasher comprising a washing chamber and being capable of performing cleaning cycles each including washing and rinsing periods; the system including a dispenser for dissolving solid detergent blocks and dispensing detergent solution, wherein the dispenser is configured to accommodate solid detergent, to be removably retrofittable into the dishwasher, and, to allow continuous release of all detergent solution as it is formed. In various applications the system may include a battery-powered control unit and a conductivity sensor, configured to measure the conductivity of the washing liquid and to provide the measured conductivity value to the control unit, said control unit is configured to process the conductivity value and to produce a signal.