Air purifying diveic

The present invention relates to an air cleaner provided to selectively perform an indoor air cleaning function and maryeondoem to perform room ventilation function at the same time, as well as indoor air cleaning function and room ventilation function. To this end, the invention includes a bet outlet which is connected through the exhaust duct and the exhaust channel inlet side of the outdoor air inlet and the ventilation device are connected through the air supply duct and the air supply flow path outlet side of the ventilator, the inner space and the outside air inlet the figure and provided with the air supply to cylinder space is divided by the area with the exhaust outlet and to communicate, it is a suction port and a discharge port formed in the air supply space, and a figure body inlet to the discharging space is formed; Filter through the suction port is provided in the air supply space to purify the air entering into the air supply space; The outside-air inlet and provided to be introduced into the inlet space through the air inlet to the air supply space for blowing toward the discharge port and the air blowing fan; And the exhaust damper provided so as to open and close the flow of air through the exhaust area; It is configured to include an air supply damper arranged to open and close the outside-air inlet.