Patent ID: 8518188
Filing Date: 2013-08-27
Classification: A47L

Abstract:
1. A method of controlling a dishwasher, wherein the dishwasher includes a washing chamber, the method comprising: supplying washing water to a sump; supplying washing water to a steam generating device, the steam generating device provided independently at an outside of the sump; intermittently supplying washing water to the washing chamber during an operational cycle of the dishwasher by controlling a sump pump to deliver water in the sump to the washing chamber through a plurality of water nozzles, the sump located below and communicating with the washing chamber such that the water supplied to the washing chamber returns to the sump; heating the steam generating device to generate steam; and supplying the steam generated in the steam generating device to the washing chamber during the operational cycle while washing water is being supplied, the steam supplied to the washing chamber through a steam nozzle which is independently provided from the water nozzles and connected to the steam generating device; wherein the washing water is alternately supplied through a water nozzle located in an upper portion of the washing chamber and a water nozzle located in a lower portion of the washing chamber among the plurality of water nozzles, and wherein the steam is supplied to the washing chamber between two consecutive washing water supply events.