Improved connecting structure of fan filter device

The utility model relates to a connecting structure of a fan, in particular to an improved connecting structure of a fan filter device. The improved connecting structure of the fan filter device solves the technical problems that the prior connecting structure of the fan is easy to damage, is short in service life and so on. The technical scheme of the improved connecting structure of the fan filter device is that the improved connecting structure of the fan filter device comprises a filter device, the filter device is used for filtering the air current which flows into an air inlet of the fan, the left and right sides of the filter device are respectively and firmly connected with a left flange and a right flange at the air inlet of the fan through a left and a right fixing board, an inner air deflector is mounted under the left flange, and an outer air deflector is mounted under the right flange. The improved connecting structure of fan filter device has advantages that the service life of the filter device is prolonged effectively, the replacement cost is lowered, and the equipment maintenance ratio is lowered.