Mixed flow smoke exhaust fan

Mixed flow smoke exhaust fanCharacteristics
1. Multiple types and specifications, wide application range: The following types of fans can be selected according to the different requirements of air volume, air pressure, and noise in the usage scenario:
a、 Axial flow roof ventilation fan: code named DWT-I type, with the characteristics of large air volume and higher pressure than centrifugal fans. At the same time, according to user requirements, it can also be designed as a bidirectional rotating reversible type, with the characteristic of equivalent forward and reverse conditions.
b、 Centrifugal roof ventilation fan: code named DWT-II and DWT-III, suitable for situations with low air volume but high pressure requirements;
c、 Non motorized roof ventilation fan: code named DWT-IV type, suitable for steel structure roofs, is the first environmentally friendly fan product in the new century.
2. The high-efficiency and low-noise fan system adopts CAD series software, which has been developed through multi-objective optimization design. The 1200.1400.1500.1600.2000 and 2400mm fans in this series use the same diameter but different speeds and angles to change several quantities The method of wind pressure is used to meet the needs of different operating conditions, achieve fan system matching, and facilitate energy conservation and noise reduction;
3. Lightweight. High strength. Corrosion resistance; The fan impeller can be made of different materials according to the corrosiveness of the working air medium, including ABS (engineering plastic), FRP (fiberglass reinforced plastic), and aluminum alloy sheet. For centrifugal fans with high pressure requirements and high fan speeds, the impeller surface is specially galvanized and sprayed with plastic for corrosion resistance, which not only reduces the overall weight of the machine but also has good corrosion resistance;
4. Smooth operation and long lifespan; The rotational inertia of this fan is small, the dynamic balance accuracy is high, and the operation is smooth. The factory's internal control standards for various performance indicators are higher than the fan's unemployment standards, ensuring the stable operation of the fan;
5. Wide range of applications: the fan can be manufactured into explosion-proof and flame-retardant types according to the use requirements, and is suitable for anti-aging, pumping flammable, explosive and corrosive gases;
6. Beautiful appearance: The hood components of this fan are made of fiberglass, and the exterior is made of imported rubber coating resin film. The curved surface transition is soft, beautiful and generous, and practical; Steel wind caps can also be made according to user requirements and treated with galvanized spray coating (PVC);
7. Usage conditions: The temperature of the medium should not exceed 60 degrees Celsius, excessive viscous substances are not allowed in the gas, and the dust content should be less than 100mg/m. For situations where the medium temperature is high, our factory has high-temperature fan technology that can provide products for use.
8. This product has been tested and approved by the Zhejiang Provincial Product Technical Supervision Institute. The testing items include flame retardancy, conductivity, explosion resistance, wind resistance, etc. It is supervised by the Municipal Product Technical Supervision Bureau.

Mixed flow smoke exhaust fanThe single speed structure is compact, saving installation space. The Type II dual speed fan is equipped with a noise reducing collector at the air inlet, which reduces the operating noise of the fan during low-speed exhaust.

Also known as PYHL-14A fire smoke exhaust fan, it adopts CAD software multi-objective optimization design, optional molded twisted wing conical impeller, fully enclosed high-temperature motor, and equipped with a dedicated motor cooling system. Adopting a dual speed motor direct drive system to achieve dual use (i.e. high temperature smoke exhaust during normal ventilation and firefighting), equipped with an electrical control box for remote automatic control. It has the advantages of excellent high temperature resistance, large air volume, high wind pressure, and easy installation, and is widely used in high-rise buildings, drying rooms, underground garages, subways, tunnels, and other occasions for fire smoke exhaust and ventilation. According to the GA211-1999 high temperature resistance test method for fire fans, it can operate continuously for more than 100 minutes under high temperature conditions of 400 ℃, and operate continuously for 20 hours per time without damage under medium temperature conditions of 100 ℃. It has been recognized and adopted by major cities across the country.