Air purifier

An air purifier comprises a reaction chamber which is a containing cavity used for enabling water mist to react with air; the exhaust mechanism is communicated with the reaction chamber and is used for exhausting the filtered air through the air outlet; the spraying chamber is communicated with the reaction chamber, an atomizer used for generating water mist is arranged in the spraying chamber, and the water mist generated in the spraying chamber is mixed with external air entering the air purifier through the air inlet; the water tank is communicated with the reaction chamber so as to collect liquefied water mist in the reaction chamber; the water tank is detachably installed on an outer shell of the air purifier, and the water tank and the ultraviolet lamp used for sterilization and disinfection are oppositely arranged. And the circuit component accommodating box is a sealed box body for accommodating a control circuit and a power supply system of the air purifier. By means of the structure, the problem tha