Patent ID: 8066821
Filing Date: 2011-11-29
Classification: A47L,H02K

Abstract:
1. A dishwasher comprising: a tub including rear, bottom and opposing side walls that collectively define a wash chamber, a wash pump for establishing a flow of washing fluid in the wash chamber; a drain pump for selectively withdrawing washing fluid from the wash chamber during portions of a washing operation; a washing fluid manifold including an inlet for receiving the flow of washing fluid, an outlet that directs the flow of washing fluid into the wash chamber and a passage interconnecting the inlet and the outlet; a filter chamber fluidly connected to the washing fluid manifold, said filter chamber including an inlet for receiving a portion of the flow of washing fluid and an outlet that leads into the wash chamber; a flow restrictor arranged within the passage interconnecting the inlet and the outlet of the washing fluid manifold, said flow restrictor creating a low pressure zone in the passage; a sampling port positioned in the low pressure zone, said sampling port being in fluid communication with the inlet of the filter chamber so as to divert the portion of the flow of washing fluid entering the filter chamber at a reduced pressure; and a bleed port arranged in the filter chamber to further reduce the pressure of the washing fluid entering the filter chamber, wherein washing fluid entering the filter chamber is maintained at a low pressure so as to ensure proper filtration.