Reduced sound with a rotating filter for a dishwasher
First Claim
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1. A dishwasher for treating dishes according to at least one automatic cycle of operation and configured to sit on a support surface, comprising:
- a chassis having a portion sitting on the support surface;
a tub supported by the chassis and at least partially defining a treating chamber for receiving the dishes for treatment;
a sprayer proximate to the tub to spray liquid into the treating chamber;
a circulation circuit defining a fluid flow path from the treating chamber to the sprayer through which the sprayed liquid may return from the treating chamber back to the sprayer;
a housing defining a sump having an inlet fluidly coupled to the tub and an outlet fluidly coupled to the sprayer;
a rotating filter, located within the housing, having opposing first and second surfaces, the rotating filter being positioned within the circulation circuit to filter soils from liquid flowing through the fluid flow path as the liquid passes through the rotating filter between the first and second surfaces; and
at least one flow diverter having a body formed substantially concentrically outside the rotating filter and spaced apart from the first surface to define a gap through which at least some of the liquid passes as the liquid flows through the flow path;
wherein the rotating filter has a first portion nearest the tub and a second portion nearest the support surface, and where no flow diverter is located at one of a first space between the first portion and the tub or a second space between the second portion and the support surface and where liquid passing through the gap between the at least one flow diverter and the rotating filter applies a greater shear force on the first surface than liquid in an absence of the at least one flow diverter, and wherein a gap between the at least one flow diverter and the rotating filter is a uniform distance along an entire length of the 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.
136 Citations
20 Claims
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1. A dishwasher for treating dishes according to at least one automatic cycle of operation and configured to sit on a support surface, comprising:
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a chassis having a portion sitting on the support surface; a tub supported by the chassis and at least partially defining a treating chamber for receiving the dishes for treatment; a sprayer proximate to the tub to spray liquid into the treating chamber; a circulation circuit defining a fluid flow path from the treating chamber to the sprayer through which the sprayed liquid may return from the treating chamber back to the sprayer; a housing defining a sump having an inlet fluidly coupled to the tub and an outlet fluidly coupled to the sprayer; a rotating filter, located within the housing, having opposing first and second surfaces, the rotating filter being positioned within the circulation circuit to filter soils from liquid flowing through the fluid flow path as the liquid passes through the rotating filter between the first and second surfaces; and at least one flow diverter having a body formed substantially concentrically outside the rotating filter and spaced apart from the first surface to define a gap through which at least some of the liquid passes as the liquid flows through the flow path; wherein the rotating filter has a first portion nearest the tub and a second portion nearest the support surface, and where no flow diverter is located at one of a first space between the first portion and the tub or a second space between the second portion and the support surface and where liquid passing through the gap between the at least one flow diverter and the rotating filter applies a greater shear force on the first surface than liquid in an absence of the at least one flow diverter, and wherein a gap between the at least one flow diverter and the rotating filter is a uniform distance along an entire length of the filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A dishwasher for treating dishes according to at least one automatic cycle of operation, comprising:
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a tub at least partially defining a treating chamber for receiving the dishes for treatment; a sprayer proximate to the tub to spray liquid into the treating chamber; a circulation circuit defining a fluid flow path from the treating chamber to the sprayer through which the sprayed liquid may return from the treating chamber back to the sprayer; a housing defining a sump having an inlet fluidly coupled to the tub and an outlet fluidly coupled to the sprayer; a rotating filter, located within the housing, having an outer surface and an inner surface and enclosing a hollow interior, the rotating filter being positioned within the circulation circuit to filter soils from liquid flowing through the fluid flow path as the liquid passes through the rotating filter; and multiple external flow diverters formed substantially concentrically outside the rotating filter and spaced apart from the outer 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 outer surface than liquid in an absence of the multiple external flow diverters and where a gap between one of the multiple external flow diverters and the rotating filter is a uniform distance along an entire length of the filter. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification