High-Negative-Pressure Energy-Saving Cone Ventilation Fan

50-inch High-Negative-Pressure Energy-Saving Cone Fan

• Housing: National standard hot-dip galvanized steel sheet with 275g/㎡ zinc coating; H-type hot-dip galvanized motor bracket; front & rear guards welded from hot-dip galvanized wire.
• Blades: Nylon reinforced with glass fiber, high structural strength & low deformation. Optimized blade profile delivers large airflow, high efficiency and outstanding negative pressure resistance.
• Main structure: Direct drive design for high transmission efficiency and maintenance-free operation.
• Sealing: Butterfly valve assembly with flexible opening/closing and excellent tightness when fully closed.

55-inch High-Negative-Pressure Energy-Saving Cone Fan

• Housing: Modified PP blended with anti-aging agent; integrally bent square tube motor bracket with hot-dip galvanized anti-corrosion finish; front & rear guards welded from hot-dip galvanized wire.
• Blades: Nylon+glass fiber composite, high rigidity, minimal deformation, aerodynamically optimized for large airflow, high efficiency and superior negative pressure resistance.
• Main structure: Direct drive, high transmission efficiency, maintenance-free.
• Sealing: Butterfly valve with smooth operation and reliable sealing performance upon closure.

57-inch High-Negative-Pressure Energy-Saving Cone Fan

• Housing: Modified PP with anti-aging additive; integrally formed square tube motor bracket with hot-dip galvanized coating; front and rear wire-mesh guards hot-dip galvanized after welding.
• Blades: Glass-fiber-reinforced nylon, robust, low distortion, aerodynamic design for big airflow, high efficiency and strong negative pressure resistance.
• Main structure: Direct drive, high efficiency, maintenance-free.
• Integrated control: Permanent magnet motor with built-in controller; variable speed adjustable via environmental controller, equipped with over-current, overload and over-temperature protection functions.