▎ 摘　　要

NOVELTY - The utility model claims a fresh air system based on modified graphene composite macromolecular material film, comprising a fresh wind automatically circulating box, fan and fan, and an outdoor air, an outdoor exhaust pipe, an indoor air inlet, an indoor air; in the new wind circulating tank is provided with a full-heat exchanging core, full heat exchange core body is polygon-shaped structure, comprising an upper core block assembly is formed by overlapping by several flow passage plate, the upper and lower adjacent two flow passage plate is clamped with a layer of modified graphene composite macromolecular material film, gap interval of the modified graphene composite macromolecular material film between the two flow passage plates into two new air flow passage are separated from each other and the return air stream flow channel, fresh air flow passage and the return air flow between the flow passage through the modified graphene composite macromolecular material film for sensible heat exchange and latent heat exchange, this utility model has reasonable structure, high heat exchanging efficiency, long service life, strong durability, strong self-cleaning ability.