Product Details
Product Introduction:
Our company manufactures jet fans (tunnel jet fans), which are a specialized type of axial-flow fan. They are primarily used in longitudinal ventilation systems for highways, railways, subway tunnels, and similar underground structures, making them one of the most widely employed pieces of equipment in tunnel ventilation today.
1. It can be classified into unidirectional jet fans and reversible bidirectional jet fans. The bidirectional model delivers essentially equal forward and reverse airflow thrust, making it well-suited for bidirectional road tunnel applications.
2. Fans are typically installed either by suspension or on the sidewall, thereby not encroaching on the tunnel’s traffic space. They eliminate the need for additional ductwork, resulting in low civil‑engineering costs, and offer convenient installation, operation, and maintenance, making them a highly cost‑effective ventilation solution.
3. Most models are equipped with silencers, which effectively reduce operating noise and meet tunnel‑specific noise‑control requirements, while also offering corrosion resistance, stable operation, and high reliability.
Main functions of the Products:
1. Daily tunnel ventilation: Supplies fresh air into the tunnel, removes harmful gases such as carbon monoxide and nitrogen oxides generated by vehicle traffic, reduces dust concentrations, and ensures that the tunnel’s air quality meets regulatory standards.
2. Smoke Exhaust and Temperature Control During Fire Conditions: In the event of a tunnel fire, smoke flow can be directed to control its spread, thereby ensuring safe conditions for evacuation and firefighting operations, while also reducing tunnel temperatures and mitigating the risks posed by high heat to both the tunnel structure and personnel.
3. Improve air flow within the tunnel: By leveraging the entrainment effect of jet flows, induce overall air movement throughout the tunnel, addressing issues of stagnant air and inadequate local ventilation, and ensuring uniform airflow distribution.
General Technical Parameters Table (Reference for Typical Specifications of the SDS Series):
Parameters may vary across different models and manufacturers; the following are typical parameter ranges commonly used in the industry:
| Parameter Item |
General Specification Range |
Explanation |
| Air volume |
10,000 ~ 430,000 m³/h |
Different models correspond to different airflow ranges, enabling them to meet the requirements of tunnels with varying lengths and cross-sectional dimensions. |
| Outlet air velocity |
20 ~ 35 m/s |
Determining the jet-induced capability of the fan |
| Thrust |
100 ~ 3500 N |
Some models can generate bidirectional thrust, with reverse thrust no less than the forward thrust. 90% |
| Motor power |
5.5 ~ 110 kW |
Motor protection class IP54 and above, insulation class F, temperature rise class B. |
| Rotational speed |
960 ~ 2900 r/min |
Mostly 4-pole or 6-pole motors, suitable for varying airflow and pressure requirements. |
| Noise |
60 ~ 80 dB(A) |
After installing a silencer, further reduction can be achieved. |
| Operating temperature |
-20 ~ 60℃ |
The fire‑service‑specific model can withstand 250℃/300℃ high temperature (for 1 hour) |
| Installation method |
Lifting and side wall installation |
Adaptable to various tunnel installation spaces |
| Material |
Carbon steel (standard) / Stainless steel (optional) |
Apply an anti-corrosion coating to the carbon steel surface to extend its service life. |
Note: The specific fan model and parameters for each project must be custom-selected and designed by the manufacturer, taking into account tunnel length, cross-sectional dimensions, traffic volume, and fire‑safety requirements.
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Mobile phone:+86-188-6602-0062
Email:sddljnhb@163.com
Website:http://www.sddljnhb.com
Address: No. 5166, Tianqu East Road, Economic Development Zone, Dezhou City, Shandong Province
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