Soil separation channel for dishwasher pump system
AssigneeWhirlpool Corporation
InventorEdward L. Thies
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 soil accumulator channel. The soil accumulator channel is open to the dishwasher chamber but covered by a filter screen. The accumulator channel is shallow beneath the screen and empties downwardly into an accumulator sump where accumulated soil is periodically drained. The shallow accumulator channel allows water to flush an inside of the screen to carry soil 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 the area within the cylindrical wall;
- a guide channel surrounding said cylindrical wall between said cylindrical wall and said shallow arcuate channel and said cylindrical wall comprises a height providing a spill over into said guide channel:
- an inlet tube from said guide channel into said shallow arcuate channel;
- and
- a soil accumulation area for collecting soil from the water, flow connected to said shallow arcuate channel.
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, said screening channel surrounding said surrounding wall, said soil/water flow channel flow connected to a first end of said screening channel;
- and
- a soil accumulator sump flow connected to a second end of said screening channel;
- 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 impellers soil/water flow channel receiving water with entrained soil from adjacent said surrounding wall;
- a soil screening channel with a soil/water inlet end having an end wall and outlet end having a discharge opening, and having a screen element on a top side thereof for passing water therethrough while retaining soil below, said screening channel surrounding said surrounding wall, said soil/water flow channel flow connected to said inlet end of said screening channel;
- and
- a soil accumulator sump flow connected to said outlet end of said screening channel;
- and
- means for draining soil from said accumulator sump.
Dependencies are inferred from the claim text.