Novel air purifier

The utility model discloses a novel air purifier which comprises a purifier main body, a coarse filter screen, a filter cartridge, a fan, a metal lining, an ultraviolet lamp tube and a control panel,wherein the purifier main body is provided with a mounting cavity, and the mounting cavity is provided with an air inlet and an air outlet; the coarse filter screen is mounted on the purifier main body, is arranged opposite to the air inlet and is used for filtering air passing through the air inlet; the filter cylinder is mounted in the mounting cavity and is provided with a ventilation opening,and the ventilation opening is opposite to the air outlet; the fan is arranged between the air outlet and the ventilation opening so as to pump out air in the filter cartridge and discharge the air out of the air outlet; the metal lining is mounted in the filter cartridge, and the inner wall of the metal lining is coated with a nano catalyst; the ultraviolet lamp tube is mounted in the metal lining; the control panel is in