Patent ID: 7338358

Claim:
An apparatus for air purifying and ventilating configured to operate in a ventilating mode and an air purifying mode, comprising: a case provided on a ceiling or a wall and having a fan therein; at least one air purifying member provided in the case; a first passage passing through the case and communicating with an outside, an inside of the case, the air purifying member and a room to guide external air into the room in the ventilating mode; a second passage passing through the case and communicating with the room, the fan, and the outside, to guide the room air to the outside in the ventilating mode; at least one valve opening the first passage and the second passage to the outside in the ventilating mode, and cutting off the first passage and the second passage from the outside in the air purifying mode; and a damper provided in the case and configured to isolate the first passage from the second passage so as to supply the external air into the room and discharge the room air to the outside in the ventilating mode, and the damper configured to allow communication between the first passage and the second passage so as to purify the room air drawn by the fan into the air purifying member and then guided back into the room in the air purifying mode.