Filtration assembly with grinding mechanism
AssigneeMidea Group Co., Ltd.
InventorRobert M. Digman
Life of this patent
Estimating the term…
Abstract
A dishwashing appliance with a filtration assembly capable of removing/shredding/pulverizing large dishwashing debris from recirculated dishwashing fluid is provided. The dishwashing appliance may include a tub, a spray system, a recirculation pump, a drainage pump, and a grinding type filtration assembly in fluid communication with the spray system, the recirculation pump, and the drainage pump.
Claims21
A dishwashing appliance comprising:
- a first filter with a first filtering permeability in a flat lid configuration, configured to receive the dishwashing fluid;
- a second filter with a second filtering permeability coupled to said first filter;
- a sump housing through which said second filter is disposed therein, said second filter separates said sump housing into a grinding volume portion and a recirculation volume portion;
- and
- a rotatable grinding plate and a stationary grinding ring at a bottom of said grinding volume portion of said sump housing, wherein said rotatable grinding plate is coupled to a shaft driven by a grinding motor and said stationary grinding ring includes a plurality of notches.
A filtration assembly for an appliance including a tub defining a washing chamber having a tub bottom, said filtration assembly positioned at bottom of said dishwashing chamber through an opening formed by said tub bottom thereof, said filtration assembly comprising:
- a first filter with a first filtering permeability in a flat lid configuration, configured to receive all said dishwashing fluid and positioned at top of said filtration assembly and above said opening of said tub bottom to allow said dishwashing fluid to flow into said filtration assembly;
- a second filter with a second filtering permeability coupled to said first filter;
- a sump housing through which said second filter is disposed therein, said second filter adjacent an inner surface of said sump housing to separate said sump housing into a grinding volume portion and a recirculation volume portion;
- a grinding assembly at a bottom of said grinding volume portion of said sump housing, including a rotatable grinding plate coupled to a shaft driven by a grinding motor and a stationary grinding ring having a plurality of notches;
- and
- a rotatable self-cleaning device positioned in said sump housing, wherein said rotatable self-cleaning device physically contacts at least a portion of said second filter to remove dishwashing debris thereon.
Dependencies are inferred from the claim text.