Reduced sound with a rotating filter for a dishwasher
First Claim
Patent Images
1. A pump and filter assembly, comprising:
- an impeller adapted to recirculate liquid;
a housing defining an interior and exterior;
a rotating filter having an upstream surface and a downstream surface, the rotating filter located within the interior such that the liquid being pumped through the pump and filter assembly passes through the rotating filter from the upstream surface to the downstream surface to effect a filtering of the liquid as the liquid passes through the rotating filter;
a hollow shroud having a body at least partially enclosing the periphery of the rotating filter and having multiple access openings; and
multiple external flow diverters, with one of the multiple external flow diverters located within each of the access openings, spaced apart from the upstream surface of the rotating filter to define gaps between the multiple external flow diverters and the rotating filter and where the multiple external flow diverters are not transversely located around the rotating filter such that none of the multiple external flow diverters are located 180 degrees from another of the multiple external flow diverters;
wherein liquid passing through the gaps between the multiple external flow diverters and the rotating filter applies a greater shear force on the upstream surface than liquid in an absence of the multiple external flow diverters, andwherein the access openings are not evenly spaced around the rotating filter.
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Abstract
A dishwasher with a tub at least partially defining a washing chamber, a liquid spraying system, a liquid recirculation system defining a recirculation flow path, and a liquid filtering system. The liquid filtering system includes a rotating filter disposed in the recirculation flow path to filter the liquid and a flow diverter wherein liquid passing through a gap between the flow diverter and the rotating filter applies a greater shear force on the surface than liquid in an absence of the flow diverter.
133 Citations
9 Claims
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1. A pump and filter assembly, comprising:
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an impeller adapted to recirculate liquid; a housing defining an interior and exterior; a rotating filter having an upstream surface and a downstream surface, the rotating filter located within the interior such that the liquid being pumped through the pump and filter assembly passes through the rotating filter from the upstream surface to the downstream surface to effect a filtering of the liquid as the liquid passes through the rotating filter; a hollow shroud having a body at least partially enclosing the periphery of the rotating filter and having multiple access openings; and multiple external flow diverters, with one of the multiple external flow diverters located within each of the access openings, spaced apart from the upstream surface of the rotating filter to define gaps between the multiple external flow diverters and the rotating filter and where the multiple external flow diverters are not transversely located around the rotating filter such that none of the multiple external flow diverters are located 180 degrees from another of the multiple external flow diverters; wherein liquid passing through the gaps between the multiple external flow diverters and the rotating filter applies a greater shear force on the upstream surface than liquid in an absence of the multiple external flow diverters, and wherein the access openings are not evenly spaced around the rotating filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification