The invention belongs to the technical field of
fresh air systems, and particularly relates to a
fresh air system for improving
indoor air quality, which comprises a
fresh air machine, a through-wall
pipe, a two-position four-way
reversing valve I, a ground
pipe fitting, a waterway pipeline, a temperature controller, a two-position four-way
reversing valve II, an air supply extension
pipe, an air supply box, an air return extension pipe and an air return box, the fresh air
machine is connected with one end of the ground
radiation unit through a through-wall pipe and a two-position four-way
reversing valve I. The ground
radiation unit is connected with a temperature controller through a waterway pipeline, and the other end of the ground
radiation unit is connected with an air supply extension pipe and an air return extension pipe through a two-position four-way reversing valve II. The outer ends of the air supply extension pipe and the air return extension pipe are connected with an air supply box and an air return box respectively. The
system provides the functions of
refrigeration, heating, fresh air, purification, dehumidification and humidification, and has the advantages of being convenient to construct, long in service life, convenient to maintain, free of indoor electromechanical equipment
noise, low in construction communication cost and safe in building structure maintenance.