Sound insulation and noise reduction air duct structure

The invention discloses a sound insulation and noise reduction air duct structure, and relates to the technical field of ventilation equipment. The sound insulation and noise reduction air duct structure comprises a shell, a fan and a sound absorption plate, wherein at least one air inlet and one air outlet are formed in the shell so as to form an air duct in the shell, the fan is arranged at the air inlet of the shell, the sound absorption plate is located in the shell, the sound absorption plate is arranged on the side of the air duct in the air flowing direction, a plurality of sound- absorption holes are formed in the sound absorption plate, and no sound absorption hole is formed in the position, right opposite to the air inlet and the air outlet, of the sound absorption plate. On one hand, sound insulation, noise reduction and ventilation can be balanced to a certain extent, and on the other hand, overall stability and convenience in disassembly are considered, an internal cavity is convenient to clean,