Product Description
An axial smoke exhaust fan is a high-performance ventilation unit specifically engineered to extract smoke and hot air from buildings during fire emergencies. It plays a critical role in improving safety by maintaining air quality and visibility for evacuation and firefighting efforts.
Working Principle
The fan operates on Bernoulli's principle. As the blades rotate, they generate a pressure difference, lower pressure at the front and higher pressure at the rear, creating a pressure gradient that induces airflow. This efficient flow mechanism pulls smoke and hot gases out of affected areas swiftly.
Core Components
Motor: Typically rated between 0.5 and 5 horsepower, the motor provides the necessary torque to drive the fan blades.
Fan Blades: Aerodynamically designed to optimize air movement and minimize resistance.
Cylindrical Housing: Directs the airflow, reducing turbulence and enhancing extraction efficiency.
Performance
Axial smoke exhaust fans can achieve air flow rates of up to 50,000 cubic meters per hour. This high-capacity operation ensures rapid removal of smoke and heat, stabilizing internal conditions and enabling safer evacuation routes.
Product Features
Efficient Smoke Exhaust Capability
The axial smoke exhaust fan is engineered for exceptional smoke extraction efficiency. Its blades are precisely angled at an optimal windward angle, allowing airflow to pass smoothly without forming low-pressure zones behind the blades-this minimizes resistance and turbulence. As a result, the fan is capable of expelling large volumes of smoke rapidly, with an airflow capacity reaching up to 50,000 cubic meters per hour. During fire emergencies, this rapid smoke clearance reduces indoor temperature, maintains visibility in evacuation paths, and provides vital protection for the safe and timely evacuation of occupants.
High Temperature Resistant Design
Designed to operate under extreme heat, the axial smoke exhaust fan incorporates high-temperature-resistant materials such as cast aluminum blades and durable steel casings. These materials possess excellent thermal conductivity, ensuring uniform heat distribution across the blade surface and preventing deformation from localized overheating. The fan is capable of continuous operation for over 60 minutes at temperatures exceeding 250°C. Internally, heat-resistant cables and high-temperature sealing materials protect the motor and electrical components, ensuring the fan remains fully functional during fire conditions and reliably performs its smoke exhaust function.
Low-Noise Operation
To minimize noise during operation, the fan blades are designed with serrated or curved edges that disperse airflow sound frequencies. This aerodynamic design reduces operational noise to between 60 and 75 decibels, even during high-capacity performance. Compared to conventional fans, this low-noise feature significantly reduces environmental disturbance, making it ideal for noise-sensitive locations such as office buildings, hospitals, and residential complexes. In everyday ventilation use, its quiet operation helps maintain a comfortable indoor environment without disrupting occupants.
Variable Speed Control Function
The axial smoke exhaust fan is equipped with an intelligent frequency converter, enabling variable speed control based on real-time smoke levels and environmental needs. This flexibility allows the fan to modulate airflow intensity-operating at high speed during emergencies and lowering speed when full capacity is unnecessary. Such control not only improves energy efficiency but also reduces mechanical wear, ultimately extending the fan's operational lifespan and ensuring long-term reliability.
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