Air conditioner fresh air dehumidifying and filtering device

The utility model discloses an air conditioner fresh air dehumidifying and filtering device which comprises a box body, a blade installed in an opening in the front portion of the box body, a filter screen installed in the box body and located behind the blade and an evaporator installed in the box body, and racks are fixed to the left end and the right end of the inner wall of the box body and located behind the filter screen. A concave groove is formed in the inner wall of the box body and located behind the rack. The driving bevel gear can be driven to rotate through the double-shaft motor, the driven bevel gear drives the shaft rod to rotate along with meshing transmission of the driving bevel gear and the driven bevel gear, the shaft rod can drive the reciprocating lead screw to rotate, the guide seat drives the cleaning roller to move up and down in a reciprocating mode along with threaded fit of the reciprocating lead screw and the guide seat, and meanwhile the cleaning roller is driven to move up and