Abstract: A dishwasher having an air generator is provided. In an operation of the dishwasher, air of a washing chamber is heated by a heater and, at a same time, water is fed into the washing chamber. Therefore, kitchen utensils and the water contained in the washing chamber are heated by heat exchanged from the heated air. Since the dishwasher primarily heats the air having a relatively lower specific heat and, thereafter, heats the water having a relatively higher specific heat by the heat of the heated air to produce hot water, the dishwasher reduces time consumption and improves an energy efficiency of the dishwasher during a dishwashing operation, and lengthens a life span of the heater.

Abstract: A dishwasher which move a rack up and down by a simple structure. The rack is rotatably mounted to a frame by a plurality of rotary members and upper and lower hinge shafts. The frame is provided in a cavity to be moved forward and backward. A plurality of extension pieces upwardly extend from both sides of the frame. A stopper is provided on each of the extension pieces. Each of the rotary members is stopped by the stopper so that the rotary member is not forwardly rotated beyond a predetermined distance. A damper is mounted to an outer surface of each lower hinge shaft so that the rack is slowly moved toward the frame during a downward movement of the rack. A handle is provided at an upper portion of the rack so that both ends of the handle are rotatably mounted to both sides of the rack, thus allowing the rack to be easily moved upward.

Abstract: A method of controlling a dishwasher, which heats air in a washing chamber while supplying water into the washing chamber to generate hot water through a heat exchange between the heated air and the supplied water. Further, a second method of controlling a dishwasher operates an air generator while starting of the supplying of water into a washing chamber to heat the supplied water and air in the washing chamber. If a temperature of the water in the washing chamber exceeds a first reference value, the supplying of water is stopped and the air generator is operated. If a temperature of the air in the washing chamber exceeds a second reference value, the supplying of water is started.

Abstract: A dishwasher that is provided with an improved soundproofing structure to reduce the manufacturing cost of the dishwasher and accomplish an improved soundproofing effect in comparison with conventional dishwashers. The disclosed dishwasher includes a washing tub provided in a cabinet. A basket is provided in the washing tub to hold dishes therein. A washing pump pressurizes wash water contained in the washing tub. An injection nozzle sprays wash water supplied from the washing pump. A soundproofing unit with a net structure is installed in the washing tub in such a way as to be spaced apart from the inner surface of the washing tub, thus dispersing wash water sprayed from the injection nozzle while reducing pressure of the wash water.