Двунаправленные струйные вентиляторы из Китая — Поставщики и заводы для вентиляции туннелей
- Generates significantly greater thrust per unit of energy than conventional axial fans, substantially reducing operating costs
- Noticeably higher efficiency than standard axial fans with lower A-weighted noise levels
- Optional two-speed motor reduces rotation speed under favorable natural ventilation conditions for additional energy savings
- Forward/reverse switching completed in just 30 seconds
- Meets urgent smoke extraction needs during tunnel fires and similar emergencies
- Stable airflow in both directions with consistent performance
- Casing manufactured with imported specialized spinning and flanging machine for high strength and excellent concentricity
- High-pressure die-cast aluminum alloy blades, precisely balanced with German Schenck dynamic balancing equipment
- Fully enclosed squirrel-cage motor, Class H insulation, IP55 protection, service life > 20,000 hours
- Specially designed to withstand elevated temperatures during tunnel fires
- Standard configuration includes 1D or 2D silencers (1 or 2 times the duct diameter) for effective noise control
- Specially designed impeller and guide vanes minimize vortex noise through aerodynamic optimization
How quickly can the tunnel jet fan reverse its airflow direction?
The fan completes forward/reverse switching in just 30 seconds, making it ideal for urgent smoke extraction requirements during tunnel fires or emergency ventilation scenarios.
What motor protection class does the tunnel jet fan use?
The fan is equipped with a fully enclosed squirrel-cage motor featuring Class H insulation and IP55 protection, making it suitable for humid and dusty tunnel environments with a service life exceeding 20,000 hours.
Can the fan operate at high temperatures during a tunnel fire?
Yes. The fan is specially designed to withstand elevated temperatures during tunnel fires and fully complies with fire smoke extraction requirements, ensuring reliable performance in emergency conditions.
How is noise controlled in this tunnel jet fan?
The fan comes standard with 1D or 2D silencers (1 or 2 times the duct diameter) for effective noise suppression. Additionally, the specially designed impeller and guide vanes are aerodynamically optimized to minimize vortex noise at the source.
What makes the fan blades more reliable than conventional options?
The blades are high-pressure die-cast from aluminum alloy and precisely balanced using German Schenck dynamic balancing equipment. This ensures smooth, low-vibration operation and extended service life even under continuous heavy-duty use.
Is a two-speed motor option available, and what are its benefits?
Yes, an optional two-speed motor is available. It reduces the fan's rotation speed when natural ventilation conditions are favorable, resulting in significant additional energy savings and reduced wear on mechanical components over time.