| 摘要 |
PURPOSE: An air purifier having oxygen density/humidity controlling function and noxious gas alarm function is provided in which people inside a room inhale air containing a sufficient amount of oxygen by circulating and purifying air indoors, thereby diffusing purified air and discharging fresh air stored until it reaches to a standard value in case of being a standard value or less after measuring density of oxygen in air in a room. CONSTITUTION: In an air purifier discharging the purified air into atmosphere by purifying the air sucked in through an antibacterial filter (2) and an electric precipitator (4) after sucking in air in atmosphere by rotating a fan (11) with a motor, the air purifier comprises an oxygen sensor (10); an oxygen generating means (9); and a controller part (40), wherein an oxygen discharging signal is sent to the oxygen generating means (9) which is detachably mounted inside the air purifier so that oxygen is discharged into atmosphere for controlling the oxygen density in case of a value of the measured oxygen density being less than a certain set value by judging the measured data in the controller part (40) after measuring density of oxygen in air passing through the oxygen sensor (10).
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