Noise reduction structure of fresh air purifier

Abstract

The utility model discloses a fresh air purifier noise reduction structure which is of a flexible combined structure and is formed by combining a plurality of noise reduction units, each noise reduction unit comprises a sound absorption wedge structure layer, a hollow cavity structure layer and a filling cavity structure layer which are sequentially overlapped and combined, the hollow cavity structure layer is used for being filled with air, and the filling cavity structure layer is used for being filled with air. The filling cavity structure layers are used for containing filling materials, and communicating holes are formed between the adjacent hollow cavity structure layers of the adjacent noise reduction units and between the adjacent filling cavity structure layers of the adjacent noise reduction units. According to the noise reduction structure of the fresh air purifier, the hollow cavity structure layer plays a role in isolation, the sound absorption wedge structure layer plays a role in sound absorption, the filling cavity structure layer plays a role in isolation and shock absorption, the three split bodies are stacked together to be spliced into the flexible combined box body, fresh air suspended ceiling equipment is integrally wrapped in the box body in an attached mode, and therefore the noise reduction effect is achieved. Therefore, the purposes of sound absorption and noise reduction are achieved, and the noise problem generated after original fresh air equipment is hoisted is greatly relieved or eliminated.