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Ⅱ.Centrifugal fan product advantages
1.Precise Control of Air Flow & Pressure
Intelligent airflow compensation + dynamic wind pressure monitoring enable precise airflow demand matching, avoiding insufficient fresh air (excessive CO₂) or energy waste. Multi-stage pressure design reduces AHU and duct-work resistance, ensuring uniform terminal airflow distribution.
2.High Airflow Stability
Optimized impeller fluid simulation structure avoids airflow instability (uneven filter dust accumulation, reduced heat exchanger efficiency, disordered indoor air distribution, etc.) and ensures stable airflow operation.
3.Energy-efficient Operation
High-efficiency backward-curved centrifugal impeller + external rotor motor + intelligent energy management system significantly boost fan efficiency, cutting long-term power consumption and operating costs.
4.Strong Environmental Suitability
Extreme Environment Reliability:Passed 40,000-hour reliability test at -25℃~60℃, adaptable to temperature and humidity fluctuations; motor and impeller operate fault-free.
5.Easy Installation & Maintenance
Modular design supports horizontal / vertical installation, compact structure: quick-detachable impeller + standardized inspection interfaces, which simplify integration and post-maintenance.
Centrifugal fan series 1：
Model | Voltage [V] | Frequency [Hz] | Speed [rpm] | Max Power [W] | Max Airflow [m3/h] | Noise [dB(A)] | |
 | B250M.E011** | 230 | 50/60 | 3920 | 618 | 2166 | 75 |
| | B280M.E008** | 230 | 50/60 | 3100 | 732 | 3916 | 76 |
| | B280M.E009** | 380 | 50/60 | 3450 | 1450 | 4075 | 79 |
| | B310M.E027** | 380 | 50/60 | 2785 | 1044 | 5748 | 76.2 |
| | B320M.E014** | 380 | 50/60 | 3028 | 1494 | 5168 | 78 |
| | B400M.E019** | 380 | 50/60 | 2405 | 2700 | 7485 | 81 |
| | B400M.E021** | 380 | 50/60 | 2745 | 3585 | 8305 | 85 |
| | B450M.E009 | 380 | 50/60 | 2550 | 5350 | 15202 | 95 |
| | B450M.E010 | 380 | 50/60 | 2550 | 3977 | 13964 | 92 |
| | B450M.E022/ B450M.E017** | 380 | 50/60 | 1866 | 1200 | 7617 | 81 |
| | B520M.E036/ B520M.E035** | 380 | 50/60 | 2180 | 4335 | 13400 | 90.2 |
| | B560M.E021** | 380 | 50/60 | 1770 | 5570 | 20710 | 86.5 |
| | B560M.E043/ B560M.E044** | 380 | 50/60 | 1503 | 2417 | 14171 | 82.5 |
| | B630M.E031/ B630M.E032** | 380 | 50/60 | 1383 | 2951 | 20098 | 87.2 |
Airflow-static pressure curve：
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Airflow-power curve：
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Dimension
Model | A | B | C | D | E | F | G | H | I | J | K | L | M |
B250M.E011 | ∅253 | ∅151 | ∅102 | ∅168 | ∅253 | 35.5 | 106.8 | 87 | 3 | 31 | ∅240 | ∅255 | 4 - ∅4.5 |
B280M.E008 | ∅283 | ∅151 | ∅102 | ∅189 | ∅283 | 56 | 190 | 133 | 3 | 52 | ∅287 | ∅308 | 6 - ∅7 |
B280M.E009 | ∅283 | ∅166 | ∅102 | ∅189 | ∅283 | 76 | 195 | 133 | 3 | 52 | ∅287 | ∅308 | 6 - ∅7 |
B310M.E027 | ∅360 | ∅166 | ∅138 | ∅254 | ∅372 | 65.8 | 194.5 | 194.5 | 4.5 | 51 | ∅325 | ∅350 | 8 - ∅4.5 |
B320M.E014 | ∅318 | ∅166 | / | ∅215 | ∅318 | 75.8 | 207 | 145 | 8 | 60 | ∅318.8 | ∅348 | 8 - ∅9 |
B400M.E019 B400M.E021 | ∅460 | ∅226 | ∅188 | ∅326 | ∅475 | 100 | 300 | 245.5 | 10 | 51 | ∅245 | ∅475 | 4 - ∅10.5 |
B450M.E009** B450M.E010** | / | ∅231 | ∅188 | ∅360 | / | 100 | 322 | 257 | 10 | 72 | ∅445 | ∅480 | 6 - ∅9 |
B450M.E017/ B450M.E022** | ∅465 | ∅166 | / | ∅300 | ∅465 | 75.8 | 233.5 | 206 | 10 | 70 | ∅425 | ∅450 | 6 - ∅9 |
B520M.E035/ B520M.E036** | ∅510 | ∅226 | ∅188 | ∅338 | ∅510 | 100 | 271 | 225 | 10 | 52 | ∅445 | ∅470 | 6 - ∅9 |
B560M.E021 | ∅560 | ∅233 | ∅188 | ∅440 | ∅660 | 120 | 403.8 | 311.6 | 10 | 82.6 | ∅600 | ∅640 | 6 - ∅10.5 |
B560M.E044/ B560M.E043** | ∅570 | ∅226 | ∅188 | ∅438 | ∅585 | 100 | 289 | 258 | 10 | 83 | ∅540 | ∅565 | 6 - ∅9 |
B630M.E032/ B630M.E031** | ∅650 | ∅226 | ∅188 | ∅514.5 | ∅660 | 100 | 333 | 293 | 18 | 86.5 | ∅498.2 | ∅634 | / |
Dimension
Model | A | B | C | D | E | F |
B250M.E011** | 400 | 350 | 4 - ∅11 | 186 | / | / |
B280M.E008** B280M.E009** | 500 | 450 | 4 - ∅11 | 315.6 | / | / |
B310M.E027** | 500 | 450 | 4 - ∅11 | 316 | / | / |
B320M.E014** | 440 | 400 | 4 - ∅11 | 247.5 | 196.5 | / |
B400M.E019** | 500 | 450 | 4 - ∅11 | 410 | / | / |
B400M.E021** | 500 | 450 | 4 - ∅11 | 407 | 358 | 15 |
B450M.E009 B450M.E010 | 630 | 630 | 8 - ∅11 | 463.5 | 384.5 | 15.5 |
B450M.E017** | 630 | 580 | 8 - ∅11 | 463 | 390 | / |
B450M.E022** | 500 | 450 | 4 - ∅11 | 367.5 | 233.5 | / |
B520M.E036/ B520M.E035** | 630 | 580 | / | 400 | 321 | / |
B560M.E021** | 800 | 750 | 4 - ∅11 | 594.7 | 511.7 | / |
B560M.E043/ B560M.E044** | 800 | 750 | 4 - ∅11 | 420.5 | 388.5 | / |
B630M.E031/ B630M.E032** | 800 | 750 | 4 - ∅11 | 499.5 | 437.5 | 18 |
