The model of a two blade Roots blower is usually named by the manufacturer themselves, and different brands may have different model rules, but generally include the following key information:
**Airflow (m3/min), pressure (kPa or Bar), power (kW), and rotor type (two blades) * *.
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**Common examples of two blade Roots fan models**
The model labeling methods of different manufacturers may vary, but usually follow a format similar to the following:
1. * * Universal Naming**
- **L22WD**
-L: Roots Blowers
-22: Airflow of approximately 2.2 m3/min
-W: Two Leaves (Some manufacturers use E to represent two leaves and T to represent three leaves)
-D: Motor direct drive
- **GRB-50A**
-GRB: Series code (possibly a two blade Roots fan)
-50: Inlet caliber (50mm) or air volume code
-A: Version iteration
2. Naming of Airflow/Pressure Parameter Types**
- **JAS-200**
-JAS: Two Leaf Roots Fan Series
-200: Air volume of 200 m3/h (or pressure of 20kPa, to be combined with the manufacturer's parameter table)
- **2L-13**
-2L: Two leaf Roots fan (2 Lobes)
-13: Airflow of 1.3 m3/min
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**How to confirm the specific model**
1. * * View nameplate * *: The fan body is usually marked with key parameters such as model, air volume, pressure, power, etc.
2. * * Manufacturer's Manual * *: Different brands and models have significant differences in rules (such as * *, * *, etc.), and specific manufacturer's product catalogs should be referred to.
3. * * Key parameter matching * *:
-Airflow (e.g. 1-100 m3/min)
-Pressure (such as 9.8~98 kPa)
-Motor power (e.g. 0.75~200 kW)
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**Precautions**
-The two blade fan is gradually being phased out: Due to the superior performance of the three blade fan, mainstream manufacturers (such as * * Shandong, * *) may have discontinued the two blade model or only accept customization.
-Alternative suggestion: If low noise is required, you can directly choose the three leaf model (such as * * -50, RT-150 * *).
For specific models, please provide required parameters such as air volume and pressure, or consult the target brand manufacturer directly.
