| 摘要 |
The utility model discloses an air purifier. The air purifier comprises a shell, a purification device and a draught fan, wherein the shell is provided with a first air inlet which is communicated with outdoor air and an air outlet which is communicated with indoor air; a first air change passage is formed by the first air inlet, the air outlet and a chamber of the shell, and the purification device and the draught fan are both contained in the first air change passage; the purification device comprises a front filter and a rear filter, and the front filter is close to the first air inlet; the outdoor air is driven to enter the first air change passage through the first air inlet by the draught fan and is blown in a room through the air outlet after the outdoor air is purified through the purification device. According to the air purifier provided by the utility model, the fresh air change function is obtained, the purified outdoor air is continuously sucked in the room, harmful gases such as carbon dioxide which is generated by the breath of a human body, formaldehyde which is generated by furniture and decorative materials, VOC (Volatile Organic Compounds) and radon gas are discharged from indoor to outdoor, thus the oxygen content in the indoor air is greatly increased, and the indoor air quality is improved. |
