Abstract: Disclosed is an austenitic stainless steel pipe having excellent wrinkle resistance. The austenitic stainless steel pipe includes, based on % by weight, silicon (Si): 0.1 to 0.65%, manganese (Mn): 0.2 to 3.0%, nickel (Ni): 6.5 to 12.0%, chromium (Cr): 14.5 to 20.5%, copper (Cu): 6.0% or less (excluding 0), the sum of carbon (C) and nitrogen (N): 0.13% or less (excluding 0), and the remainder being Fe and unavoidable impurities, wherein the austenitic stainless steel pipe satisfies Equation (1) below concerning an outer diameter (D) and a thickness (t) thereof and has a yield strength of 195 MPa or less: D/t?20 ??Equation (1).

Abstract: A condensing type dryer uses a heat exchanger in which condensed water can be smoothly discharged through a water-discharging slot formed in a rear end portion of a rear cover of the heat exchanger. The water-discharging slot prevents an air flowing resistance which can be caused by condensed water pooling at the rear end portion of the rear cover. Also, leakage-preventing walls enhance the heat exchanging function by ensuring a uniform flow of cold external air through the heat changer. The leakage-preventing walls prevent external air from leaking around the lateral edges of the heat exchanger.

Abstract: Disclosed is a filter cleaning apparatus and a ductless dryer adopting the same, the dryer having a main body, a drum rotatably mounted at the main body, a hot air supplying unit supplying hot air into the drum, a heat exchanger condensing and removing moisture contained in air exhausted from the drum, a circulation duct conducing the air exhausted from the drum to the heat exchanger, a filter installed in the circulation duct and filtering foreign substances contained in the air discharged from the drum, and a filter cleaning apparatus removing the foreign substances caught by the filter, thereby enhancing a user's convenience and reducing indoor air contamination which may occur in the course of removing the foreign substances.

Abstract: The present invention relates to a hot air generating apparatus and a dryer having the same. The hot air generating apparatus comprises a temperature sensing unit, and a gas supply unit controlling a flowing amount of gas to be supplied according to a temperature of hot air sensed by the temperature sensing unit, wherein when the temperature of the hot air sensed by the temperature sensing unit approaches a pre-set threshold value, the flowing amount of gas to be supplied is gradually reduced, thereby being capable of continuously supplying hot air without being frequently turned on/off.

Abstract: A ductless dryer is disclosed. The ductless dryer according to the present invention includes a hot air supply unit providing hot air into a drum and controlling heat for heating the air according to air volume, and a heat exchange unit dehumidifying humid air exhausted from the drum and controlling the amount of water used for dehumidifying according to a dew point temperature of the humid air.

Abstract: Disclosed is a ductless dryer having a heat exchanger module in accordance with the present invention. The heat exchanger module is configured to have a water-supplying inlet disposed at an outlet for air and to be provided with a sealing unit, a drain recess and a leakage preventing protrusion. Thus, a dehumidifying performance for humid air is enhanced. Accordingly, it is capable of preventing mold from being gathered on a wall of an installation space caused by exhausting the air in which moisture is not removed. Also, it is capable of preventing a user in the installation space from feeling unpleasant caused by exhausting the air in which the moisture is not removed to the installation space.

Abstract: A ductless dryer includes a sealing unit for preventing a leakage of lint through a gap of a filter installation portion. The sealing unit includes a sealing protrusion formed at the filter, a sealing recess disposed at a filter installation duct of the circulation duct for inserting the sealing protrusion thereinto, and a sealing member inserted into the sealing recess and contacting the sealing protrusion. Accordingly, the ductless dryer according to the present invention can prevent the leakage of lint through a gap of a filter installation portion and the malfunction of the ductless dryer by leaked lint, thereby enhancing reliability of the dryer.

Abstract: A condensing type dryer uses a heat exchanger in which condensed water can be smoothly discharged through a water-discharging slot formed in a rear end portion of a rear cover of the heat exchanger. The water-discharging slot prevents an air flowing resistance which can be caused by condensed water pooling at the rear end portion of the rear cover. Also, leakage-preventing walls enhance the heat exchanging function by ensuring a uniform flow of cold external air through the heat changer. The leakage-preventing walls prevent external air from leaking around the lateral edges of the heat exchanger.

Abstract: A ductless dryer includes a main body, a drum rotatably installed at the main body, a heat exchanger for removing moisture from air exhausted from the drum, a circulation duct to flow the air exhausted from the drum into the heat exchanger, an exhaust duct to flow the air exhausted from the heat exchanger outside the dryer; and a noise reduction portion to attenuate noise propagation through the exhaust duct. As the ductless dryer is provided with the noise reduction portion, the noise propagation through the exhaust duct exposed into the room and the noise of the entire ductless dryer can be attenuated at the same time, whereby a quieter room environment can be provided.

Abstract: Disclosed is a filter cleaning apparatus and a ductless dryer adopting the same, the dryer having a main body, a drum rotatably mounted at the main body, a hot air supplying unit supplying hot air into the drum, a heat exchanger condensing and removing moisture contained in air exhausted from the drum, a circulation duct conducing the air exhausted from the drum to the heat exchanger, a filter installed in the circulation duct and filtering foreign substances contained in the air discharged from the drum, and a filter cleaning apparatus removing the foreign substances caught by the filter, thereby enhancing a user's convenience and reducing indoor air contamination which may occur in the course of removing the foreign substances.