Patent ID: 9222210
Filing Date: 2015-12-29
Classification: D06F

Abstract:
1. A drum washing machine comprising: a cabinet forming an external appearance; a tub provided inside the cabinet to accommodate to washing water; a drum rotatably installed inside the tub; a door installed on the cabinet to open and close an opening formed in the tub; a diaphragm installed between the tub and the door to seal a space between the tub and the door; and a nozzle unit installed at an upper portion of the diaphragm such that interference with the door is avoided and configured to receive water directly from an external water-supply source, which is provided outside the cabinet, and to spray water to inside the drum during a washing cycle and a rinsing cycle, wherein the nozzle unit is a variable-type nozzle unit that can adjust a water jetting type of the nozzle unit according to a displacement of a linear actuator that is installed inside the nozzle unit and moves back and forth, wherein the variable-type nozzle unit includes a body part, which is provided on a front surface thereof with a jetting exit to spray water, and a nozzle which is installed on a front surface of the linear actuator and moves back and forth by the linear actuator, and a nozzle head formed on a front surface of the nozzle partially protrudes beyond the jetting exit, and includes a front portion at the jetting exit having an inner diameter that decreases forward such that water jet through the jetting exit is guided by the shape of the front portion of the nozzle head and is sprayed toward a center of the drum washing machine in a concentrated jet.