Cleaning and liquid contact with solids – Apparatus – Having self cleaning means
Patent
1993-09-07
1994-09-13
Coe, Philip R.
Cleaning and liquid contact with solids
Apparatus
Having self cleaning means
134111, 210167, 210314, 210411, A47L 1522, A47L 1542
Patent
active
053459571
ABSTRACT:
A water circulation system for a dishwasher is provided, and includes a pump housing with a cover mounted in the bottom wall of the washing chamber of the dishwasher. The cover includes a collection chamber with a strainer portion extending around the outside of the chamber, and a filter element positioned on the inside of the chamber. A first portion of the wash water passes through the strainer, which removes large food particles from the water, which is then recirculated by a pump in the pump housing back to the washing chamber. A second portion of wash water is collected in the collection chamber and passes through the filter element to remove food particles therefrom, and then into the pump housing for recirculation by the pump to the washing chamber. The collection chamber includes a drainage outlet for draining collected food particles from the chamber at the end of the wash cycle. A backwash spray of water is also provided to continuously backwash the filter element during the washing cycle so as to prevent clogging of the element.
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Cooper Randall L.
Welch Rodney M.
Coe Philip R.
Maytag Corporation
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