Product Details
Product Introduction:
Our company manufactures duct‑type mixed‑flow fans (also known as diagonal‑flow fans), which are high‑efficiency ventilation devices positioned between axial and centrifugal fans. The airflow passes through the impeller at an inclined angle, combining the large air volume of axial fans with the high static pressure of centrifugal fans. These fans are widely used in applications such as building fire‑smoke exhaust, fresh‑air ventilation, and industrial ductwork supply ventilation.
General technical parameters (taking the mainstream SWF series / HL3-2A series mixed-flow fans as examples):
| Parameter Item |
Specification Details |
| Product Series |
Common models: SWF Series (High-Efficiency Mixed-Flow Fans), HL3-2A Series (Low-Noise Mixed-Flow Fans), HTF Series (Fire-Fighting Smoke-Extraction Mixed-Flow Fans), SJG Series (Duct Inclined-Flow Fans) |
| Machine number specifications |
2.5#~12# (corresponding to impeller diameters of 250~1200 mm) |
| Rated airflow range |
800~60,000 m³/h (increases as the serial number grows) |
| Rated wind pressure range |
150–1800 Pa (under standard operating conditions, suitable for medium-pressure piping systems) |
| Rotational Speed Specification |
960/1450/2900 rpm (single-speed / dual-speed optional; the dual-speed motor allows switching between high and low airflow) |
| Motor power |
0.25–30 kW (IP54 protection rating, Class F insulation; explosion-proof and high-temperature‑resistant fire‑fighting motors available as options) |
| Applicable medium |
Normal air / Flue gas; medium temperature ≤ 80°C (the fire‑fighting smoke exhaust version can withstand high temperatures up to 280°C and operate continuously for more than 30 minutes) |
| Material Configuration |
Standard configuration: cold-rolled steel sheet with powder coating (rust‑proof and corrosion‑resistant treatment); 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, an air inlet protective grille, and a vibration-damping device. |
Applicable Scenarios and Selection Recommendations:
Core use cases:
1. Fire smoke exhaust and make-up air systems for shopping malls, office buildings, underground parking garages, and tunnels
2. Air supply and exhaust ventilation for factory buildings and workshops
3. Supply air at the terminal outlets of the building’s fresh-air system and ventilation ducts
4. Kitchen exhaust and fume purification system with associated ventilation ductwork
5. Corrosion-resistant exhaust gas conveyance in the chemical and electroplating industries
Key considerations for selection:
1. Selection based on airflow and static pressure: Calculate the total system pressure loss according to duct length, number of bends, and resistance of filters/fire dampers; 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 3C certification must be selected; for environments containing corrosive gases, fiberglass‑reinforced plastic or stainless‑steel corrosion‑resistant models are preferred.
3. Noise Control: For noise-sensitive applications, 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.
Keywords:
Quote Inquiry
Please fill in your Contact information and your requirements; we will arrange for a professional to contact you!
Cross-flow air curtain machine
The cross‑flow air curtain employs a large‑diameter, slender cross‑flow impeller—also known as a tangential fan—directly driven by a single‑phase motor to generate a wide, planar, high‑velocity airflow. It is installed above or on the side of doorways. The unit features a flat, rectangular profile with a much reduced depth compared to centrifugal models, allowing it to seamlessly integrate into various ceiling designs. It is particularly well suited for spaces with limited headroom and where aesthetics and quiet operation are paramount, such as shopping malls, supermarkets, restaurants, office buildings, banks, hospitals, and residential garages.
Our company’s surface-type coolers are among the core heat-exchange devices in air-conditioning and ventilation systems. They are primarily used to cool and dehumidify air, and can also be switched to hot-water or steam mode during winter to provide air heating. By utilizing a refrigerant (such as chilled water, refrigerant, or brine) or a heat-transfer medium (such as hot water or steam) flowing inside the tubes, these units facilitate forced‑convection heat exchange with the air flowing outside the tubes, thereby regulating air temperature and humidity. As the central heat-exchange components of chiller units, fresh-air handling units, fan coil units, and other equipment, they offer high heat-exchange efficiency, flexible installation, and broad compatibility.
The ceiling‑mounted fresh air ventilator (ceiling‑type air handling unit) is a central air‑conditioning terminal unit that integrates fresh air exchange, air temperature and humidity control, air filtration and purification, and energy recovery. The unit features a concealed ceiling‑mount installation, suspended within the building’s suspended ceiling. It utilizes chilled water or hot water piping to provide cooling and heating, while simultaneously exhausting indoor stale air and supplying filtered outdoor fresh air. This system not only enhances indoor air quality in enclosed spaces but also regulates air temperature through heat‑exchanger coils, offering both ventilation and central air‑conditioning functions. It delivers energy savings, minimizes floor space occupation, and is widely suited for integration into fresh air systems in commercial, industrial, and large public buildings.
Our company’s Q‑type air heater is an industrial‑grade, forced‑convection heating unit that uses water or steam as the heat transfer medium. It is specifically designed for large‑space applications such as factory and mine workshops, warehouses, large buildings, and drying rooms. The equipment consists of a fan, an electric motor, and a steel finned‑tube radiator integrated into a single unit. Performance tests have demonstrated its stable and reliable operation. By combining “steam heat exchange with forced air supply,” it rapidly heats the air, delivering highly efficient heating and making it one of the mainstream solutions for heating high‑ceiling spaces.
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
Mobile Access