▎ 摘　　要

NOVELTY - The utility model model claims a graphene full heat exchange three-constant fresh air system, ventilation system to the technical field of paper, solving the problem that the existing three-constant system cannot realize 24 hours starting energy consumption is large, and the energy consumption is large, the construction is not easy to reach the standard value, the cost is high, and the display device still has the problem of limited installation when using. the front end of the display screen is provided with a shielding edge, the display screen close to the rear end is provided with three sliding grooves distributed with equal distance, the three sliding grooves are provided with a movable plate, the display screen is provided with an electric energy management and display and high precision intelligent the sensing line controller, the electric energy management and display wireless connection with three constant system, the three constant system containing constant temperature, constant humidity and constant oxygen.