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US 8,707,973 B2Granted
Dishwasher
AssigneeLG Electronics Inc.
InventorsSangheon Yoon, Taehee Lee
Life of this patent
Estimating the term…
Abstract
A dishwasher is provided that prevents foreign materials from remaining lodged in a filter. The dishwasher may include a sump in which washing fluid is collected, a filter provided in the sump so as to separate foreign materials from the washing fluid, and a cleaning device including at least one blade that scrapes foreign materials from the filter as the cleaning device moves, either in a rotating direction or a linear direction.
Claims21
A dishwasher, comprising:
- a rack positioned in a washing space and a nozzle that disperses washing fluid into the washing space;
- a sump that collects washing fluid supplied to the washing space;
- a plurality of filters provided in the sump, the plurality of filters comprising a first filter and a second filter, wherein the first and second filters are each substantially cylindrical, with the first filter positioned concentrically within the second filter;
- and
- a cleaning device to clean the second filter, the cleaning device comprising:
- a rotatable shaft;
- a frame coupled to the shaft, the frame being disposed inside the second filter so as to surround the first filter,
- at least one blade coupled to the frame, the at least one blade protruding from the frame towards the second filter to scrape the second filter;
- and
- a holder to hold the at least one blade, the holder being movably positioned inside the second filter, wherein a movement of the holder causes the at least one blade to scrape the second filter, which dislodges foreign materials from the second filter.
7 more elements
A dishwasher, comprising:
- a rack positioned in a washing space and at least one nozzle that disperses washing fluid into the washing space;
- a sump that collects washing fluid supplied to the washing space;
- a pump positioned adjacent to the sump so as to supply washing fluid to the at least one nozzle;
- a plurality of filters that filter foreign materials from washing fluid before the washing fluid is supplied to the pump, the plurality of filters comprising:
- a first filter that performs a primary filtering of the washing fluid;
- and
- a second filter configured to receive washing fluid from the first filter and to perform a secondary filtering of the received washing fluid, wherein the first and second filters are each substantially cylindrical, with the first filter positioned concentrically within the second filter;
- and
- a filter cleaner movably positioned adjacent to the plurality of filters so as to dislodge foreign materials from at least one of the plurality of filters,
- wherein the filter cleaner is positioned within a space formed between the first and second filters so as to contact an inner circumferential surface of the second filter.
7 more elements
Dependencies are inferred from the claim text.