Soil chopping system for a dishwasher
First Claim
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1. A dishwasher for treating dishes according to at least one 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 including a recirculation pump having an impeller and recirculating the sprayed liquid from the treating chamber to the liquid spraying system to define a recirculation flow path;
a liquid filtering system comprising a cylindrical rotating filter operably coupled to the impeller such that rotation of the impeller effects the rotation of the cylindrical rotating filter, with the cylindrical rotating filter having an outer upstream surface and an inner downstream surface and located within the recirculation flow path such that the recirculation flow path passes through the cylindrical rotating filter from the outer upstream surface to the downstream surface to effect a filtering of the sprayed liquid and the cylindrical rotating filter fluidly divides the recirculation flow path into a first part that contains filtered soil particles and a second part that excludes the filtered soil particles; and
a soil chopping system comprising at least one blade mounted to the outer upstream surface of the cylindrical rotating filter for co-rotation therewith, the at least one blade extending from the outer upstream surface and defining a blade path upon rotation of the cylindrical rotating filter that encircles the outer upstream surface.
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Abstract
A dishwasher with 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 defining a recirculation flow path, and a liquid filtering system having a rotating filter. A chopping system is included to macerate foreign objects within the recirculation flow path and includes a blade mounted to the rotating filter.
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Citations
23 Claims
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1. A dishwasher for treating dishes according to at least one 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 including a recirculation pump having an impeller and recirculating the sprayed liquid from the treating chamber to the liquid spraying system to define a recirculation flow path; a liquid filtering system comprising a cylindrical rotating filter operably coupled to the impeller such that rotation of the impeller effects the rotation of the cylindrical rotating filter, with the cylindrical rotating filter having an outer upstream surface and an inner downstream surface and located within the recirculation flow path such that the recirculation flow path passes through the cylindrical rotating filter from the outer upstream surface to the downstream surface to effect a filtering of the sprayed liquid and the cylindrical rotating filter fluidly divides the recirculation flow path into a first part that contains filtered soil particles and a second part that excludes the filtered soil particles; and a soil chopping system comprising at least one blade mounted to the outer upstream surface of the cylindrical rotating filter for co-rotation therewith, the at least one blade extending from the outer upstream surface and defining a blade path upon rotation of the cylindrical rotating filter that encircles the outer upstream surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A dishwasher for treating dishes according to at least one 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; and a liquid filtering system comprising; a rotating filter having an outer upstream surface and an inner downstream surface and located within the recirculation flow path such that the recirculation flow path passes through the rotating filter from the outer upstream surface to the downstream surface to effect a filtering of the sprayed liquid and the rotating filter fluidly divides the recirculation flow path into a first part that contains filtered soil particles and a second part that excludes the filtered soil particles; and a first artificial boundary spaced from at least one of the outer upstream surface and the downstream surface such that liquid passing between the first artificial boundary and the corresponding surface applies a greater shear force on the corresponding surface than liquid in an absence of the first artificial boundary; and a soil chopping system comprising at least one blade mounted to the outer upstream surface of the rotating filter for co-rotation therewith, the at least one blade extending from the outer upstream surface and defining a blade path upon rotation of the rotating filter that encircles the outer upstream surface of the rotating filter. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification