Abstract: A drum type washing machine with improved drying efficiency, includes a tub, a drum rotatably provided inside the tub, a drying duct connected to at least one of the tub and the drum and configured to supply a hot air, and a condensing duct connected to the drying duct and configured to allow air with high humidity supplied from the tub or the drum to exchange heat with cooling water, dry the air with high humidity and then supply a dry air to the drying duct. The condensing duct includes a water chamber configured to accommodate the cooling water. The water chamber includes a condensing wall formed to make contact with the cooling water on one surface thereof and make contact with the air with high humidity on the other surface thereof and configured to cause heat exchange between the cooling water and the air with high humidity.

Abstract: A washing machine having a condensing duct with its internal space divided into a cooling water path and an air flow path. In a drying process, heated air is blown into the tub to dry the laundry and then becomes humidified. The humidified air is dried at the condensing duct and supplied back to the tub. In the condensing duct, cooling water causes condensation of the vapor in the humidified air and thereby dries the air. The condensing duct includes a partition member that isolates the cooling water path and air flow path and serves as a common wall between the two paths. With the two paths isolated from each other, the cooling water does not make direct contact with the humidified air, thereby improving air dry efficiency of the washing machine.