Fan Manufacturing: GDF Duct Fan, Silenced Type

Fan manufacturer: A fan is a machine that uses mechanical energy to increase gas pressure and convey gas; it is a type of driven fluid machinery. In China, “fan” is the conventional abbreviation for gas‑compression and gas‑transportation machinery. The term “fan” as commonly used encompasses ventilators, blowers, and wind turbines.

Fan Manufacturing: Duct-Type GDF Duct Fan

Fan manufacturer: A fan is a machine that uses input mechanical energy to increase gas pressure and convey gas; it is a type of driven fluid machinery. Fans are widely used for ventilation, dust removal, and cooling in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings; for ventilation and draft in boilers and industrial furnaces; for cooling and ventilation in air-conditioning equipment and household appliances; for drying and conveying grains; and for providing wind sources in wind tunnels as well as for inflating and propelling hovercrafts.

Firefighting Smoke Exhaust Fan Unit: HLF-6 Low-Noise Mixed-Flow Fan Unit

The HTF fire‑exhaust fan is part of the HTF(A) series and features a multi‑objective optimized design developed using CAD software. It is equipped with a molded axial‑flow impeller, an integrated high‑temperature motor, and a dedicated motor cooling system. A dual‑speed motor with direct‑drive transmission enables dual functionality—providing routine ventilation and, in emergency situations, high‑temperature smoke extraction. When fitted with an electrical control cabinet, it can be operated remotely and automatically.

High-Efficiency, Energy-Saving Fan: HLF-6 Low-Noise Mixed-Flow Fan Unit

High-efficiency, energy-saving fans involve retrofitting the fan with variable-frequency drive (VFD) control. After such modifications, the fan can achieve a certain level of energy savings, typically ranging from 20% to 50%.

Anti-corrosion Fan: GDF Duct Fan for Exhaust Applications

The main components of corrosion‑resistant fans are either treated with anti‑corrosion coatings or manufactured from corrosion‑resistant materials, and such fans are collectively referred to as corrosion‑resistant fans. These fans are widely used for ventilation, dust removal, and odor extraction in factories, mines, electroplating facilities, chemical plants, etching operations, and other similar environments.

Chongqing Blower: GDF Duct Fan for Exhaust Applications

The Chongqing blower consists primarily of the following six components: the motor, the air filter, the blower body, the air chamber, the base (which also serves as the oil reservoir), and the oil drip nozzle. The blower operates by means of an eccentrically mounted rotor within the cylinder; as the rotor turns, the changing volume between the blades in the rotor slots draws in air, compresses it, and then discharges it.

General-purpose fan: GDF duct fan for corridor applications

Precautions for General-Purpose Fans The grounding of the fan housing or motor housing must be reliable. Do not operate in the reverse direction; do not run at currents exceeding the rated value; do not operate with a missing phase. Do not perform maintenance on the fan while it is running.

Chongqing Fan: Duct-mounted GDF centrifugal fan

The normal bearing temperature for a Chongqing fan is ≤70°C. If the temperature rises to 70°C, an electric control system should trigger an alarm. At this point, the cause must be investigated: first, verify that the cooling water flow is normal and that the bearing oil level is adequate. If the root cause cannot be identified promptly and the bearing temperature rapidly climbs to 90°C, the electric control system should issue another alarm and initiate a shutdown signal.

Fiberglass axial flow fan

Axial fans are widely used; they move air in a direction parallel to the fan blade axis. Examples include electric fans and the outdoor-unit fans of air conditioners, which operate as axial-flow fans. The term “axial‑flow” refers to the fact that the airflow is parallel to the fan’s shaft. Axial‑flow fans are typically employed in applications requiring high flow rates but relatively low pressure.

Duct-type GDF duct fan

YDF-B induced draft fan

XBDZ Wall-Mounted Axial Fan