Device and method for filtering particles from a liquid in a dishwasher

A method for filtering particles from a quantity of liquid in a dishwashing machine, the method comprising:

• generating a foam layer with the foam layer having filter properties in that the foam layer filters out from a dishwashing liquid passed through the foam layer at least a fraction of particles entrained with the dishwashing liquid;
• and trickling a dishwashing liquid having particles entrained therewith downwardly through the foam layer, wherein at least a fraction of the particles are retained in the foam layer, while collecting below the foam layer the quantity of dishwashing liquid from which the fraction of particles have been disentrained.

A device for filtering particles from a dishwashing fluid in a dishwashing machine, comprising:

• a container structured to retain therein a predetermined quantity of liquid mixed with at least one of a foam-forming substance and cleaning agents;
• a metering device structured to produce a flow of a gaseous fluid through the predetermined quantity of liquid so as to generate a foam layer with the foam layer having filter properties in that the foam layer filters out from a dishwashing liquid passed through the foam layer a substantial fraction of particles entrained with the dish washing liquid and such filtered-out particles are retained in the foam layer;
• and a turbidity sensor structured to detect a turbidity of the dishwashing liquid, wherein the metering device is further structured to vary the foam layer to match a degree turbidity detected by the turbidity sensor.