Dishwasher accumulator soil removal grating for a filter system
AssigneeWhirlpool Corporation
InventorsEdward L. Thies, Roger J. Bertsch
Life of this patent
Estimating the term…
Abstract
A soil separator for a dishwasher includes a centrifugal soil collection wall surrounded by a spill over guide channel, surrounded by a shallow annular accumulator channel. The soil accumulator channel is open to the dishwasher chamber but covered by a filter screen. An accumulator sump is arranged below the accumulator channel. The accumulator channel is partially formed by a plate or grating provided with spaced radial slots to allow soil to drop into the accumulator sump as it progresses around the accumulator channel. The shallow accumulator channel allows water to flush soil from an inside of the screen to the accumulator sump.
Claims11
A soil separator for a dishwasher comprising:
- a cylindrical wall;
- a water impeller arranged for rotation within said cylindrical wall;
- a shallow arcuate channel covered by a screen and flow connected to an area within the cylindrical wall;
- a soil accumulation area for collecting soil from the water arranged below said arcuate channel;
- and
- said arcuate channel having a plurality of slots arranged to pass soil downwardly into said soil accumulation area.
A centrifugal soil separator, comprising:
- a rotating element;
- a surrounding wall;
- an outlet water conduit receiving water flow from said rotating element;
- a soil/water flow channel receiving water with entrained soil from adjacent said surrounding wall;
- a soil screening channel having a screen element on a top side thereof for passing water therethrough while retaining soil below, and a plate on a bottom side thereof, said screening channel surrounding said surrounding wall, said soil/water flow channel flow connected to said screening channel;
- a soil accumulator sump flow connected to said screening channel by a plurality of radial slots spaced around said plate;
- and
- means for draining soil from said accumulator sump.
A dishwasher soil separator comprising:
- a rotating wash impeller;
- a circular surrounding wall;
- an outlet water conduit receiving water flow from said rotating impellera soil/water flow channel receiving water with entrained soil from adjacent said surrounding wall;
- an annular soil screening channel having an annular plate with a soil/water inlet region having an end wall, and having a screen element on a top side thereof for passing water therethrough while retaining soil below said element, said screening channel surrounding said surrounding wall, said soil/water flow channel flow connected to said inlet region of said screening channel;
- and
- an annular soil accumulator sump arranged below said annular plate and flow connected to said screening channel at a plurality of locations around said annular screening channel;
- and
- means for draining soil from said accumulator sump.
Dependencies are inferred from the claim text.