A rotary nozzle device is described. The device includes plural rotatable hollow links which are mutually passable through, a pump for feeding a pressurized fluid into the hollow links, and at least one fluid injection port in at least one hollow link of the nozzle. Moreover, the fluid is injected from the injection port while the hollow link is rotated by the force of the fluid pressurized by the pump, and the motion of the injection port is set in chaotic state by adjusting a structural characteristic of the nozzle.
A nozzle of a dishwasher reduces a space for installing a supplementary nozzle on a main nozzle by having first and second connectors coupled to be caught on each other between main and auxiliary nozzles. The nozzle assembly includes a main nozzle having a first coupling hole; an auxiliary nozzle, having a second coupling hole, for coupling with the main nozzle; a first interlocking device, having a first end, for coupling with the main nozzle at the first coupling hole, by being caught in the first coupling hole by the first end; and a second interlocking device, having a first end, for coupling with the auxiliary nozzle at the second coupling hole, by being caught in the second coupling hole by the first end and by having a second end to be caught on the first interlocking device.
A movement reversal device is used in a dishwasher. The dishwasher has a washing receptacle and a hydraulic assembly provided with at least two spraying devices impinging upon goods to be washed with a fluid transported via a circulating pump. The transported fluid flows through the movement reversal device that contains at least two outlets for feeding different spraying devices. The outlets are opened or closed by a positioning element such that one or several or all outlets are open or closed one after another and/or continuously. In order to better influence the course of the wash cycle and to obtain an optimal washing effect corresponding to the degree of dirtiness of the goods to be washed, the characteristics of the hydraulic assembly and the characteristics of the circulating pump are simultaneously or alternately changed by the movement reversal device.
