Dishwasher and its control method

Abstract

The present invention relates to a dishwasher and a control method thereof. According to one aspect, the dishwasher which washes dishes according to washing, rinsing, and drying steps comprises: a tub which is provided with a rack for accommodating dishes, and a washing nozzle for spraying washing water; a sump in which the washing water supplied to the tub is collected; a filter device which is provided to the sump, and allowing foreign substances of the washing water to be filtered; and a cleaning unit which clears away the foreign substances accumulated in the filter device.

Description

technical field [0001] Embodiments of the present invention relate to a dishwasher and a control method thereof. Background technique [0002] In general, a dishwasher is a device for cleaning tableware by spraying washing water onto the tableware with food, dirt, etc. attached thereto. [0003] In detail, the dishwasher cleans a plurality of dishes by spraying washing water to a plurality of dishes in the washing space through a washing water sprayer after being supplied with clean washing water from a sump provided on one side of the washing space. The wash water used for washing a plurality of tableware is recovered to the sump, passes through a filtering device in the sump, and is supplied to the wash water jetting device again. [0004] When a plurality of tableware is washed through the process as described above, the washing water remaining in the washing space and the sump is discharged to the outside. At this time, the foreign matter filtered by the filter device ...

AI Technical Summary

Problems solved by technology

[0005] However, according to the conventional dishwasher, since foreign matter keeps accumulating in the above-mentioned filter device when washing a plurality of tableware, the problem that the above-mentioned foreign matter causes the filter device to be clogged occurs.

[0006] In addition, since the foreign matter accumulated in the above-mentioned filter device acts as a flow resistance against the wash water, the flow rate and flow velocity of the wash water passing through the above-mentioned filter device are reduced.

As a result, as the amount of washing water supplied to the above-mentioned washing water injection device decreases, the cleaning performance of the dishwasher also decreases, thereby causing a problem that the washing water suction unit that sucks the washing water is also overloaded.

[0007] Moreover, if the foreign matter continues to accumulate in the filter device, the above-mentioned foreign matter will stick to at least one side of the filter, making it difficult to remove, and there will also be a problem that a bad smell will be generated inside the cleaning space due to the decay of the foreign matter.

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