Product Details
Product Introduction:
Our company manufactures duct‑mounted mixed‑flow fans—also known as cross‑flow fans—which are ventilation devices that fall between axial and centrifugal fans. The airflow passes through the impeller at an inclined angle, combining the high air volume of axial fans with the high static pressure of centrifugal fans. These fans are widely used in applications such as ducted air supply, fire‑smoke extraction, fresh‑air ventilation, and industrial ventilation.
General technical parameters (taking the mainstream SJG series mixed-flow fans as an example):
| Parameter Item |
Specification Details |
| Product Series |
Common models: SJG Series (General‑Purpose Mixed‑Flow Fans), SWF Series (High‑Efficiency Mixed‑Flow Fans), HTF Series (Fire‑Resistant Smoke‑Exhaust Mixed‑Flow Fans) |
| Machine number specifications |
2.5#~10# (corresponding to impeller diameters of 250~1000 mm) |
| Rated airflow range |
500–40,000 m³/h (increases as the serial number grows) |
| Rated wind pressure range |
150–1500 Pa (under standard operating conditions, suitable for medium-pressure piping systems) |
| Rotational Speed Specification |
1450/2900 rpm (single-speed / dual-speed optional; the dual-speed motor allows switching between high and low airflow) |
| Motor power |
0.18–15 kW (IP54 protection class, Class F insulation; explosion-proof and high-temperature‑resistant motors available as options) |
| Applicable medium |
Normal air / Flue gas, medium temperature ≤ 80°C (fire‑fighting smoke exhaust version can withstand high temperatures up to 280°C) |
| Material Configuration |
Standard configuration: cold-rolled steel sheet with powder coating; optional: stainless steel, fiberglass (corrosion-resistant) / Explosion-proof custom-made) |
| Operating noise |
≤55~75 dB(A) (measured at 1 meter from the unit; noise levels may increase slightly with higher RPMs) |
| Protection rating |
IP54 (standard), IP55 customizable |
| Installation method |
Pipe-to-pipe connection type, supports horizontal installation. / Vertical / Lifting / Floor-Mounted Installation |
| Control method |
Standard configuration includes mains-frequency control; optional features include variable-frequency speed regulation, dual-speed control, and fire‑alarm interlock control. |
| Security Configuration |
Optional features include overload protection, oil- and moisture-resistant treatment, and an air inlet protective grille. |
Applicable Scenarios and Selection Recommendations:
Core use cases:
1. Fire smoke exhaust and fresh air ventilation for shopping malls, office buildings, and underground parking garages
2. Air supply and exhaust ventilation for factory buildings and workshops
3. Exhaust ventilation and fume purification system with associated induced draft fan
4. Corrosion-resistant exhaust gas conveyance in the chemical and electroplating industries
5. Forced ventilation for basements and equipment rooms
Key considerations for selection:
1. Selection based on airflow and static pressure: Calculate the total system pressure loss based on duct length, number of bends, and filter resistance; when selecting a fan, allow for a 10–20% margin.
2. Operating Condition Matching: For fire‑fighting smoke‑extraction applications, a high‑temperature‑rated model with fire‑protection certification must be selected; for corrosive‑gas environments, fiberglass‑reinforced plastic or stainless‑steel models with corrosion‑resistant coatings are preferred.
3. Noise Control: In noise-sensitive environments, prioritize low-speed models or use them in conjunction with silencers and vibration-damping devices.
4. Installation Matching: Prioritize selecting a fan model that matches the duct diameter to avoid additional pressure losses caused by diameter changes.
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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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