Двунаправленная Обратимость: Эффективные Струйные Вентиляторы от Китайских Поставщиков и Заводов для Вентиляции Туннелей
Product Description
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High Efficiency & Energy Saving
- Generates significantly greater thrust per unit of energy than conventional axial fans, substantially reducing operating costs.
- Noticeably higher efficiency compared to standard axial fans at lower A-weighted noise levels.
- Optional two-speed motor reduces rotation speed under favorable natural ventilation conditions for additional energy savings.
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Superior Bi-Directional Performance
- Forward/reverse switching completed in just 30 seconds.
- Meets urgent smoke extraction needs during tunnel fires and similar emergency situations.
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Exceptional Reliability
- Casing manufactured using imported specialized spinning and flanging machines 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.
- Designed to withstand elevated temperatures during tunnel fires; compliant with fire smoke extraction requirements.
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Low-Noise Design
- 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.
Application Scenarios
Detail Photos
Frequently Asked Questions
How quickly can the tunnel jet fan reverse airflow direction?
The fan completes forward/reverse switching in just 30 seconds, making it ideal for urgent smoke extraction scenarios during tunnel fires or emergency ventilation situations.
What is the service life of the motor used in this tunnel jet fan?
The fully enclosed squirrel-cage motor features Class H insulation and IP55 protection rating, designed for a service life exceeding 20,000 hours, even in humid and dusty tunnel environments.
How is the noise level controlled in this fan?
The fan is equipped with standard silencers of 1D or 2D length (1 or 2 times the duct diameter). Combined with aerodynamically optimized impeller and guide vanes, vortex noise is minimized to achieve low A-weighted noise levels.
Is the fan suitable for high-temperature fire conditions inside tunnels?
Yes. The fan is specially designed to withstand elevated temperatures during tunnel fires and fully complies with fire smoke extraction standards and requirements.
What materials are used for the fan blades and casing?
The blades are high-pressure die-cast from aluminum alloy and precisely balanced using German Schenck dynamic balancing equipment. The casing is manufactured with imported specialized spinning and flanging machines, ensuring high structural strength and excellent concentricity.
Does the fan support energy-saving operation modes?
Yes. An optional two-speed motor is available, which reduces rotation speed under favorable natural ventilation conditions, delivering additional energy savings while maintaining reliable performance.