The blade design principle of Type DWT-I axial flow roof ventilator is the same as that of Type DZ axial flow ventilator. It adopts wide-blade, large-chord-length spatial twisted and inclined blades, which can achieve the required air volume and static pressure at low speed, thereby reducing ventilator noise.
- Impeller Diameter & Performance: The ventilator is available in 17 specifications with impeller diameters ranging from 300 mm to 2400 mm. The air volume ranges from 1500 m³/h to 200,000 m³/h, and the total pressure ranges from 60 Pa to 320 Pa. For ventilators with a model number of 12# or above, the blades can be designed with adjustable angles to meet the needs of different working conditions and achieve energy conservation and noise reduction.
- Speed Regulation Modes:
- Single-speed
- Dual-speed
- Variable-frequency (The ventilator motor adopts a variable-frequency motor, equipped with a variable-frequency controller for variable-frequency speed regulation to adapt to different working conditions. It is recommended to lock the adjustment frequency between 25 Hz and 50 Hz.)
- Explosion-Proof Type: To meet the needs of explosive environments, the ventilator can be manufactured as an explosion-proof type with an explosion-proof grade of EXdIIBT4.
According to user requirements, the ventilator can be equipped with manual or electric control dampers, self-closing shutters, etc.
- Operating Temperature: -20℃ ~ +45℃
- Humidity: ≤ 99%
- Medium Conditions:
- Regular Type: Non-corrosive, non-flammable, non-explosive gas (dust content ≤ 100 mg/m³)
- Explosion-Proof Type: Non-corrosive gas containing flammable and explosive substances (dust content ≤ 100 mg/m³)
- Anti-Corrosion Type: Corrosive gas (no dust)
- Power Supply: Three-phase 380V/50Hz
The ventilator can be widely used for medium-low pressure and large air volume ventilation in high-rise buildings, industrial and mining enterprises, power stations, stations, gymnasiums, etc.
- Impeller
- Motor
- Feet
- Casing (air duct, motor bracket)
- FRP (Fiberglass Reinforced Plastic) wind cap
- Control cabinet
- Self-closing shutters
- Bird-proof net
- Safety net
- Fixed-Angle Roof Ventilator: The impeller cross frame is made of steel through stamping and hydraulic forming; the blades are made of aluminum alloy through stamping and hydraulic forming, and then riveted to the cross frame for assembly.
- Adjustable-Angle Roof Ventilator: The impeller cross frame is made of aluminum alloy through die-casting; the blades are made of aluminum alloy through stamping and hydraulic forming.
- All impellers undergo static and dynamic balance calibration, with a balance accuracy of not lower than Grade G5.6.
