The ducted fresh air system consists of a fresh air fan and duct fittings. The outdoor air purified by the new fan is introduced into the room, and the indoor air is discharged through the air duct. The ductless fresh air system is composed of fresh air fans, which also purifies outdoor air and introduces it into the room. Relatively speaking, the ducted fresh air system is more suitable for industrial or large-area garages because of its heavy workload, while the ductless fresh air system is more suitable for home use because of its convenient installation.
Oston Chun was invented in 1935 after many attempts. Made the world's first heat exchange equipment that can filter air pollution, also called fresh air system. Ventilation principle: The fresh air system is to send fresh air indoors with special equipment at one side of a closed room, and then exhaust it outdoors with special equipment at the other side, which will form a "fresh air flow field" indoors, thus meeting the needs of indoor fresh air ventilation. The implementation scheme is as follows: a fan with high wind pressure and large flow rate is used to blow air into the room from one side by mechanical force, and a specially designed exhaust fan is used to exhaust the air from the other side to forcibly form a fresh air flow field in the system.