The YDF induction fan is a new type of fan designed based on the concept of high-speed jet induced ventilation. The ductless induction ventilation subsystem composed of multiple sets of fans can be combined with the supply fan and exhaust fan to form the entire ventilation and smoke exhaust system. Its working principle is to use a system designed and appropriately arranged multiple induced draft fan nozzles to emit directional high-speed airflow, inducing fresh or treated outdoor air to be delivered to the required area without ducts, achieving the best indoor airflow organization and achieving efficient and economical ventilation and air exchange effects. When using a ductless jet induced ventilation system, the entire layer can be a ventilation duct, and the required air pressure for the supply and exhaust fans is much lower than when using ducts. This allows for the selection of fans with higher wind volume and lower air pressure, reducing the required power and significantly lowering operating and investment costs. When the exhaust fan stops running, the induction fan can still operate, playing a role in local ventilation and air exchange.

The YDF induction fan is equipped with a high-efficiency centrifugal fan, which has the characteristics of low noise, small size, light weight, easy lifting (both vertical and horizontal can be used), and simple maintenance. It has been widely used for ventilation in large places such as underground parking lots, sports halls, workshops, warehouses, shopping malls, supermarkets, and entertainment venues.

YDF type induced draft fan