Patent ID: 8603255

Claim:
A dishwasher, comprising: a water circuit; a program controller for selecting one of a first flow direction of washing liquor in the water circuit and a second flow direction that is counter to the first flow direction; a first filter in the water circuit; a flow reversing device for reversing the direction from the first flow direction to the second flow direction in response to a selection by the program controller; a soil reservoir connected to the water circuit for receiving impurities removed from the first filter by liquid flowing through the first filter in the second flow direction; a second filter in the soil reservoir, the second filter and the first filter being different filters; and a first actuator that reverses a direction of flow through the second filter between a filtering direction and a filter flushing direction, the filter flushing direction being opposite to the filtering direction, wherein washing liquor flows through the first filter both in the first flow direction and in the second flow direction, and the washing liquor flows through the second filter in both the filtering direction and the filter flushing direction.