Двунаправленная Обратимость: Мощные Струйные Вентиляторы из Китая от Завода-Поставщика
Product Description
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High Efficiency & Energy Saving
Low energy consumption with high thrust: generates significantly greater thrust per unit of energy than conventional axial fans, substantially reducing operating costs.
Efficiency advantage: demonstrates noticeably higher efficiency compared to standard axial fans at lower A-weighted noise levels.
Two-speed motor: optional two-speed motor reduces rotation speed under favorable natural ventilation conditions for additional energy savings.
Fast reversing: forward/reverse switching is completed in 30 seconds, meeting urgent smoke extraction needs in tunnel fires and similar situations.
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Exceptional Reliability
Housing: manufactured using imported specialized CNC turning and flanging machines, ensuring high strength and excellent concentricity.
Blades: high-pressure die-cast aluminum alloy, precisely balanced using German Schenck dynamic balancing equipment for smooth operation and minimal vibration.
Motor: fully enclosed squirrel-cage motor with Class H insulation and IP55 protection, suitable for humid and dusty tunnel conditions. Service life > 20,000 hours.
High-temperature resistance: specially designed to withstand elevated temperatures during tunnel fires, compliant with fire smoke extraction requirements.
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Low-Noise Design
Professional silencer: standard configuration includes 1D or 2D silencers (1 or 2 times the duct diameter), effectively controlling noise levels.
Aerodynamic optimization: specially designed impeller and guide vanes minimize vortex noise for quieter operation.
Application Diagram
Detail Photos
Frequently Asked Questions
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What makes this tunnel jet fan more energy-efficient than conventional axial fans?
This tunnel jet fan generates significantly greater thrust per unit of energy consumed compared to conventional axial fans. The optional two-speed motor further reduces energy consumption by lowering the rotation speed under favorable natural ventilation conditions, resulting in substantially lower operating costs over the fan's lifespan.
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How quickly can the fan reverse its airflow direction in an emergency?
The fan is capable of switching between forward and reverse operation in just 30 seconds. This rapid reversing capability is critical for emergency smoke extraction during tunnel fires, ensuring that evacuation routes remain clear and safe for occupants.
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What materials are used in the fan blades and housing for durability?
The fan blades are high-pressure die-cast from aluminum alloy and precisely balanced using German Schenck dynamic balancing equipment, ensuring smooth and vibration-free operation. The housing is manufactured with imported specialized CNC turning and flanging machines, providing exceptional structural strength and concentricity.
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Is this fan suitable for humid and dusty tunnel environments?
Yes. The fan is equipped with a fully enclosed squirrel-cage motor featuring Class H insulation and an IP55 protection rating, making it highly resistant to moisture and dust ingress. It is specifically engineered for demanding tunnel conditions, with a rated service life exceeding 20,000 hours.
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How is noise controlled in this tunnel jet fan?
Noise control is achieved through two key measures: first, standard-configuration silencers of 1D or 2D length (equal to 1 or 2 times the duct diameter) are installed to absorb and attenuate sound; second, the specially designed impeller and guide vanes are aerodynamically optimized to minimize vortex-induced noise at the source.
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Can this fan withstand high temperatures during a tunnel fire?
Absolutely. This tunnel jet fan is specially designed and tested to withstand the elevated temperatures that occur during tunnel fire events. It fully complies with fire smoke extraction standards and requirements, ensuring reliable performance precisely when it is needed most in life-safety situations.