Dishwasher with filter assembly
First Claim
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1. A dishwasher for treating utensils according to a cycle of operation, comprising:
- a tub at least partially defining a treating chamber;
a liquid spraying system supplying a spray of liquid to the treating chamber;
a liquid recirculation system recirculating the sprayed liquid from the treating chamber to the liquid spraying system to define a recirculation flow path;
a rotating filter having an upstream surface and a downstream surface and located within the recirculation flow path such that the recirculation flow path passes through the filter from the upstream surface to the downstream surface to effect a filtering of the sprayed liquid;
a first artificial boundary spaced from and rotatable relative to one of the downstream and upstream surfaces; and
a second artificial boundary spaced from and rotatable relative to the other of the downstream and upstream surfaces;
wherein the first and second artificial boundaries have un-matched shapes and their relative rotation forms an increased shear force zone acting on the filter.
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Abstract
A dishwasher with a tub at least partially defining a treating 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 filter disposed in the recirculation flow path to filter the liquid.
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Citations
17 Claims
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1. A dishwasher for treating utensils according to a cycle of operation, comprising:
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a tub at least partially defining a treating chamber; a liquid spraying system supplying a spray of liquid to the treating chamber; a liquid recirculation system recirculating the sprayed liquid from the treating chamber to the liquid spraying system to define a recirculation flow path; a rotating filter having an upstream surface and a downstream surface and located within the recirculation flow path such that the recirculation flow path passes through the filter from the upstream surface to the downstream surface to effect a filtering of the sprayed liquid; a first artificial boundary spaced from and rotatable relative to one of the downstream and upstream surfaces; and a second artificial boundary spaced from and rotatable relative to the other of the downstream and upstream surfaces; wherein the first and second artificial boundaries have un-matched shapes and their relative rotation forms an increased shear force zone acting on the filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification