The two blade Roots blower and Roots blower are essentially the same type of blower, but the commonly referred to "Roots blower" defaults to the three blade Roots blower, while the "two blade Roots blower" is an early or simplified version of it. The core difference between the two lies in the number of blades in the rotor (two blades vs. three blades), which directly affects performance, efficiency, and application scenarios. Here is a specific comparison:
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1. * * Rotor structure**
-Two blade Roots fan: The rotor consists of two straight blades that rotate in an "8" shape.
-Three leaf Roots blower: The rotor is composed of three blades, often designed in a spiral or involute pattern.
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2. * * Performance differences**
|* * Features * * | * * Two blade Roots blower * * | * * Three blade Roots blower * *|
|----------------|-------------------------------|-------------------------------|
|Pulsation and Noise | Large airflow pulsation and high noise (low impact frequency) | Smoother airflow and low noise (high impact frequency)|
|* * Efficiency * * | Low (poor sealing, high reflux loss) | High (good sealing, less leakage)|
|* * Energy consumption * * | Higher energy consumption under the same air volume | More energy-efficient (about 5-15)|
|* * Lifespan * * | Faster wear (concentrated impact force) | Longer lifespan (uniform load distribution)|
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3. * * Application Scenarios**
-* * Two blade Roots blower * *:
-Early equipment or low-cost demand scenarios.
-In situations where noise and pulsation are not sensitive (such as simple pneumatic conveying, low-pressure sewage treatment).
-Three leaf Roots blower:
-Modern mainstream choice, suitable for scenarios that require low noise and efficiency (such as sewage treatment, pneumatic conveying, vacuum packaging, aquaculture, etc.).
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Why is San Ye more popular**
-* * Technical improvement * *: The three leaf design significantly reduces airflow pulsation and noise while improving efficiency by increasing the number of blades and optimizing the profile (such as spiral twisting).
-* * Cost approach * *: With the advancement of manufacturing technology, the production cost of three bladed rotors has narrowed compared to two bladed rotors, but the overall benefits are higher.
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summarize
-* * Choose two leaves * *: Only applicable for budget limited or old equipment renovation.
-* * Choose Sanye * *: The preferred choice in most scenarios, especially for projects that focus on energy saving, noise reduction, and long-term stability.
If the user does not have a clear "two leaf" requirement, the three leaf Roots blower is usually recommended by default.
