Abstract: An operation mode of an air cleaner is changed according to the degree of indoor air contamination and an indoor space condition, and one or more filters of the air cleaner can be easily cleaned. The air cleaner includes a housing, an inlet located at a lower part of the housing, a filter assembly, an outlet, and a brush unit. The filter assembly is located above the inlet, and a diameter of the filter assembly is gradually shortened in the direction from an upper part of the filter assembly to a lower part of the filter assembly. The discharge port is located above a second filter assembly. The brush unit is used to eliminate contaminants from an outer surface of the filter assembly.

Abstract: Provided are a drying device having an improved structure in which an object to be dried is prevented from being damaged during a drying operation, and a clothes treating apparatus including the same. The drying device may include a casing, a drying chamber positioned inside the casing, a first drying rack positioned inside the drying chamber, and a second drying rack positioned above the first drying rack.

Abstract: A ventilation system and a method for discharging hazardous air during cooking are disclosed. The ventilation system allows hazardous air generated by cooking to flow in a backward direction of a cooking device so as to quickly transfer the hazardous air to a hood, such that the hazardous air is prevented from being inhaled by a user. As a result, the hazardous air may be concentrated into a predetermined region without being dissipated, and then subsequently discharged outside. Information about a quality of air generated in a current state of a cooking space is transferred to a user so that the user may more actively use the ventilation system, thereby better protecting the user's health.

Abstract: A clothes-treatment apparatus is disclosed. The clothes-treatment apparatus comprises: a case having a door; a clothes supporting unit supporting clothes and disposed in an accommodation space of the case; a steam spraying unit for spraying steam toward the clothes; and first and second air spraying units arranged to face each other around the clothes, moving simultaneously, and having air slits for allowing compressed air to be simultaneously sprayed therethrough at the front and rear surfaces of the clothes.

Abstract: Provided are a drying device having an improved structure in which an object to be dried is prevented from being damaged during a drying operation, and a clothes treating apparatus including the same. The drying device may include a casing, a drying chamber positioned inside the casing, a first drying rack positioned inside the drying chamber, and a second drying rack positioned above the first drying rack.

Abstract: An operation mode of an air cleaner is changed according to the degree of indoor air contamination and an indoor space condition, and one or more filters of the air cleaner can be easily cleaned. The air cleaner includes a housing, an inlet located at a lower part of the housing, a filter assembly, an outlet, and a brush unit. The filter assembly is located above the inlet, and a diameter of the filter assembly is gradually shortened in the direction from an upper part of the filter assembly to a lower part of the filter assembly. The discharge port is located above a second filter assembly. The brush unit is used to eliminate contaminants from an outer surface of the filter assembly.

Abstract: A ventilation system and a method for discharging hazardous air during cooking are disclosed. The ventilation system allows hazardous air generated by cooking to flow in a backward direction of a cooking device so as to quickly transfer the hazardous air to a hood, such that the hazardous air is prevented from being inhaled by a user. As a result, the hazardous air may be concentrated into a predetermined region without being dissipated, and then subsequently discharged outside. Information about a quality of air generated in a current state of a cooking space is transferred to a user so that the user may more actively use the ventilation system, thereby better protecting the user's health.