Patent ID: 8881556
Filing Date: 2014-11-11
Classification: D06F

Abstract:
1. A washing and drying machine comprising: a rotating tub having small holes in a circumferential wall and receiving laundry; a water tub which is provided around the rotating tub and is capable of storing water; a circulating passage communicating between an interior and an exterior of the water tub so that air is circulated therethrough; a warm air generating unit rendering air in the circulating passage warm; an overflow outlet which is provided in a surface of the water tub where warm air is supplied, so that water flows through the overflow outlet when a water level in the water tub is increased to or above a predetermined level; a drain conduit provided at a bottom of the water tub and extending outside the machine via a drain valve provided midway in the drain conduit, through which water in the water tub is discharged out of the water tub; an overflow conduit having a lower end connected to a downstream side of the drain valve in the drain conduit and communicating with the overflow outlet and with the outside of the machine; a trap provided in the overflow conduit and cutting off an air flow by storing water therein, thereby allowing water to pass therethrough and stopping an air flow, wherein the overflow conduit is introduced outside the machine via the trap; a water supply unit separate from the overflow outlet and coupled to the trap to introduce water to the trap other than from the drain conduit; and a dehumidifying unit provided in the air circulation passage to cool the circulated air so that a water content of the circulated air is condensed, wherein the water supply unit supplies dehumidification water discharged by the dehumidifying unit to the trap.