Backward curved plug fans for high-efficiency air handling units, CRAH/CRAC systems, FFU, cleanrooms and industrial ventilation chambers.
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| Model | D1 | D2 | D3 | t1 | t2 |
|---|---|---|---|---|---|
| RLM E-280 | 189 | 90 | 323 | 82 | 114.8 |
| RLM E-315 | 215 | 90 | 360 | 90 | 126.65 |
| RLM E-355 | 241.5 | 90 | 406 | 100.5 | 142.05 |
| RLM E-400 | 271 | 110 | 456 | 113.5 | 160 |
| RLM E-450 | 304 | 110 | 512 | 127.8 | 180.5 |
| RLM E-500 | 337 | 110 | 570 | 142 | 200 |
| RLM E-560 | 337.4 | 140 | 640 | 160 | 225.63 |
| RLM E-630 | 424.6 | 140 | 720 | 180 | 253.3 |
| RLM E-710 | 478 | 170 | 810 | 202 | 284.1 |
| RLM E-800 | 539.2 | 170 | 912 | 229 | 321 |
| RLM E-900 | 606 | 190 | 1023 | 255 | 359 |
| RLM E-1000 | 674 | 220 | 1120 | 285.91 | 401 |
Plug fan is a special type of centrifugal fan with backward-tilted blades and no volute. When choosing between plug fan and conventional centrifugal fan, you might be wondering: “Which one should I pick?” Then keep reading to find out.
The plug fan has compact structure and requires less installation space. The absence of volute allows you to freely determine the airflow direction and is easy to clean. It is often used in static pressure boxes and modular AHUs.
The inlet and outlet direction of centrifugal fan is fixed, it needs more space to install, maintenance is a little more complex than plug fan. However, its static pressure capacity is higher, suitable for industrial ventilation, HVAC system, exhaust system, etc.
Longwell plug fan uses EC motor, which saves more than 35% energy compared to traditional AC fans and greatly reduces electricity costs. Its belt-free design avoids transmission wear and tear, improving service life. The ball bearings we use can last up to 100,000 hours without frequent replacement.
From motor winding and impeller dynamics optimization to complete unit assembly, Longwell integrates a vertical supply chain to ensure that each fan is dynamically balanced, efficiency verified and 100% performance tested to ensure high quality and performance.
Longwell produces more than a million turbines per year and can deliver them quickly. Even for large orders, we can deliver them within 3-5 weeks.
√ Beltless design: This eliminates the tedious task of regular belt replacement, tensioning, and lubricating bearings, as well as the efficiency losses caused by belt slippage.
√ Modular design: When the fan needs cleaning, inspection, or replacement, the entire fan module can be easily removed from the side of the unit, significantly reducing downtime.
√ Easy to Clean: The simple structure makes cleaning the impeller and interior of the housing easier, facilitating the maintenance of high cleanroom standards.
√ Airflow and Static Pressure Requirements: Based on the system’s required airflow and the required resistance, review the fan’s performance curve (P-Q curve) to ensure the operating point is within the high-efficiency range.
√ Installation Space Constraints: Confirm the size of the equipment’s static pressure box to ensure sufficient space for smooth airflow into the fan to avoid performance loss.
√ Environment and Media Characteristics: Does your application involve high temperatures, corrosive gases, or explosive environments? It’s best to select the appropriate material, ingress protection rating, and certification based on the environmental requirements.
